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CN107510351A - The preparation method of pan and pan - Google Patents

The preparation method of pan and pan Download PDF

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Publication number
CN107510351A
CN107510351A CN201610443171.0A CN201610443171A CN107510351A CN 107510351 A CN107510351 A CN 107510351A CN 201610443171 A CN201610443171 A CN 201610443171A CN 107510351 A CN107510351 A CN 107510351A
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CN
China
Prior art keywords
magnetic conduction
coating
range
pan
conduction coating
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Application number
CN201610443171.0A
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Chinese (zh)
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CN107510351B (en
Inventor
李康
曹达华
李兴航
李宁
杨玲
李洪伟
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Midea Group Co Ltd
Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
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Priority to CN201610443171.0A priority Critical patent/CN107510351B/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cookers (AREA)

Abstract

Embodiments of the invention propose a kind of preparation method of pan and pan, and wherein pan includes pan body, and pan body is made up of permeability magnetic material, and the thickness of the bottom wall of pan body is in the range of 0.5mm to .2.0mm；Magnetic conduction coating, on the outer surface for the bottom wall for being at least attached to pan body, magnetic conduction coating is made up of ferrimagnet, nickel magnetic material or cobalt magnetic material.This programme prepares magnetic conduction coating on the bottom wall or bottom wall of pan body and the outer surface of side wall, so as to change vibrations noise of the vibration mode with effectively reduction or consumption pan body during Electromagnetic Heating of pan body in alternating electromagnetism off field using magnetic conduction coating, can antirust coat be additionally set outside magnetic conduction coating to be protected to magnetic conduction coating, so as to avoid magnetic conduction coating from getting rusty coming off or the problems such as disabler, and then it can effectively reduce noise of the pan body during Electromagnetic Heating, and can protects magnetic conduction coating long-term effectively, so that magnetic conduction coating can work long-term effectively.

Description

The preparation method of pan and pan
Technical field
The present invention relates to cooking utensil technical field, in particular to the system of a kind of pan and pan Preparation Method.
Background technology
Electromagnetic oven is to apply a kind of relatively more extensive domestic electromagnetic firing equipment, in addition to for cooking, People also often heat up water or boiled chafing dish with electromagnetic oven.Heat up water or boil the slaughterhouse of chafing dish typically by 430 stainless steels are made, when being heated with electromagnetic oven to slaughterhouse, because magnetic fields are on slaughterhouse The molecular vibration of slaughterhouse can be caused so that slaughterhouse produces bigger noise, so as to influence the body of user Test.
Therefore, a kind of pan for reducing noise caused by Electromagnetic Heating and its preparation side how to be proposed Method turns into technical problem urgently to be resolved hurrily at present.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art or correlation technique.
A kind of therefore, noise small pan during it is an object of the present invention to propose Electromagnetic Heating.
A further object of the present invention is to propose a kind of preparation method for being used to prepare above-mentioned pan.
To realize above-mentioned at least one purpose, the embodiment of first aspect present invention proposes a kind of pot Tool, including：Pan body, the pan body are made up of permeability magnetic material, the bottom wall of the pan body Thickness in the range of 0.5mm to 2.0mm；Magnetic conduction coating, at least it is attached to the pan body Bottom wall outer surface on, the magnetic conduction coating is by ferrimagnet, nickel magnetic material or cobalt magnetic material Material is made.
The pan that embodiment according to a first aspect of the present invention proposes, pan body is by permeability magnetic material system Into, for example be made up of the magnetic conductivity such as 430 stainless steels stainless steel or cast iron, and preferably, pan sheet Body is by permeability magnetic material monoblock cast or is stamped to form, and this kind is set can be in order to simplified pan body Manufacturing process.And by being set on the outer surface of the bottom wall of pan body by ferrimagnet, nickel Magnetic conduction coating made of magnetic material or cobalt magnetic material, so as to change pot using the magnetic conduction coating Have vibration mode of the body in alternating electromagnetism off field, added with effectively reducing or consuming pan body in electromagnetism Vibrations noise in thermal process.And research show pan body bottom wall thickness in 0.5mm extremely Its noise reduction is best when in the range of 2.0mm, pot during so as to which Electromagnetic Heating is greatly reduced The noise that tool body is sent, and then make it that noise reduction is more obvious, specifically, by setting magnetic conduction Noise can be reduced about 5dB (decibel) to 10dB by coating.
Wherein it is preferred to magnetic conduction coating preferably uses the oxide of magnetic conductive metal or magnetic conductive metal or led The oxide of magnetic metal alloy or magnetic conductive metal alloy is made, specifically, such as by iron or ferroalloy or The oxidation of the oxide of the iron or oxide of ferroalloy, the oxide of nickel or nickel alloy or nickel or nickel alloy The silk material such as thing or the oxide of oxide or cobalt alloy by cobalt or cobalt alloy or cobalt or powder are made, Wherein silk material is relatively low cost and easy to the feeding in spraying process, so as to reduce the system of magnetic conduction coating Standby cost.
In the above-mentioned technical solutions, it is preferable that certainly, also can on the outer surface of the side wall of pan shape Into the magnetic conduction coating.
In the above-mentioned technical solutions, it is preferable that the magnetic conduction coating is made up of ferrimagnet, described The porosity of magnetic conduction coating is in the range of 10% to 15%.
In the technical scheme, magnetic conduction coating can not only change to greatest extent made of ferrimagnet Vibration mode of the pan body under high frequency alternating electromagnetic field, and then effectively reduce or consume pan body Vibrations noise during Electromagnetic Heating, and its cost is also very low.Found simultaneously by research, The noise reduction of ferromagnetism magnetic conduction coating of the porosity in the range of 10% to 15% is best, specifically Ground, the porosity can be by controlling the spraying parameter of magnetic conduction coating to obtain.
In the above-mentioned technical solutions, it is preferable that the magnetic conduction coating is made up of ferrimagnet, described The thickness of magnetic conduction coating is in the range of 50 μm to 300 μm.
In the technical scheme, magnetic conduction applies depth in the range of 50 μm to 300 μm, if ferromagnetic If the thickness of property magnetic conduction coating is too small, then the noise of pan can not be effectively reduced, if ferromagnetism If the thickness of coating is excessive, then higher requirement, and its anticreep are not only proposed to antirust function Fall performance to be also deteriorated.
In the above-mentioned technical solutions, it is preferable that pan also includes：Antirust coat, it is arranged on described lead On the outer surface of magnetic coating, wherein, the outer surface of magnetic conduction coating is magnetic conduction coating away from pan body Face.
In the technical scheme, when magnetic conduction coating is made up of ferrimagnet, due to iron have it is perishable The features such as erosion is easily got rusty, thus can be applied in one layer of antirust of the external setting of magnetic conduction coating, the antirust of waterproof Layer, so as to enter shape antirust to the magnetic conduction coating on pan body using the antirust coat, waterproof is protected Shield, so as to prevent magnetic conduction coating from being reacted with solution such as water, acid or alkali, and cause magnetic conduction coating The situation that a large amount of iron rust occur to corrode and produce for surface occurs, and then can avoid the occurrence of magnetic conduction coating shedding Or the problems such as disabler.Therefore, one layer of high temperature resistant is prepared again on the magnetic conduction coating of the pan body And the antirust coat of antirust, digital preservation can be carried out to magnetic conduction coating and ensures that magnetic conduction coating can be grown Phase normal use (1~2 year) and non-corrosive, thereby using this containing magnetic conduction coating and high temperature resistant and anti- The pan body of the antirust coat of rust, both can effectively reduce the noise of its Electromagnetic Heating, and and can reaches Magnetic conduction coating is protected long-term effectively, so that magnetic conduction coating can effectively work steadily in the long term.Its In, the high temperature resistant in the antirust coat is preferably within the temperature range of 400 DEG C to 700 DEG C.
Wherein it is preferred to the antirust coat is to pass through the rust prevention by applying liquid material coating on the magnetic conduction coating Formed, in addition, antirust coat can also pass through spray metal powder or wire on magnetic conduction coating Material is formed, and anti-rust metal material can be stainless steel or aluminium alloy.But the antirust coat of the present invention is excellent Choosing is formed using antirusting paint spraying, because this kind forms the mode of antirust coat, relative in magnetic conduction Spray metal powder or silk material, which are formed for the mode of antirust coat, on coating has that cost is low, easy processing The advantages that.Specifically, antirusting paint can be sprayed on magnetic conduction coating with air gun at normal temperatures, certainly It can directly utilize brush etc. by antirusting paint brush on magnetic conduction coating, made of metal dust or silk material Metallic high temperature melting is sprayed to magnetic layer by antirust coat again due to needing using electric arc spraying process On, the process complexity and cost of the electric arc spraying used in it spray apparently higher than air gun.
In the above-mentioned technical solutions, it is preferable that the antirust coat is inorganic silicon high temperature resistant enamelled coating, had Machine silicon high temperature resistant enamelled coating or ceramic layer.
In the technical scheme, inorganic silicon high temperature lacquer, organic silicon high-temperature paint and ceramics are respectively provided with resistance to height The advantages that temperature, antirust, it is thus possible to high temperature corrosion protection effectively and reliably is carried out to magnetic layer, together When, meanwhile, inorganic silicon high temperature lacquer and organic silicon high-temperature paint belong to water paint, are typically in a liquid state, Thus its can be sprayed at normal temperatures by air gun on magnetic conduction coating, and ceramic coating fall within it is water-based Coating, thus it can also be sprayed by air gun, and when adding other additives in ceramic coating Ceramic coating can also can now be prepared jelly in magnetic conduction coating by way of brush brush On.
In the above-mentioned technical solutions, it is preferable that the thickness of the antirust coat is at 30 μm to 100 μm In the range of.
In the technical scheme, antirust coat be not easy it is too thick because can so increase cost and pot can be reduced Have body Electromagnetic Heating efficiency, another aspect antirust coat be not easy to it is too thin because can not so have Effect ground forms corrosion protection to magnetic conduction coating, thus shows the thickness of antirust coat at 30 μm by experiment When in the range of to 100 μm, i.e., effectively protection can be formed to magnetic conduction coating and antirust coat will not be caused Cost it is too high, meanwhile, the antirust coat of this kind of thickness does not have shadow substantially to the magnetic conductivity of pan body Ring.
The embodiment of the second aspect of the present invention proposes a kind of preparation method of pan, for preparing the On the one hand the pan that any one embodiment provides, wherein, the preparation method of pan includes：By punching press or Permeability magnetic material is prepared into pan body by the mode of person's casting, wherein, the thickness of the bottom wall of the pan body Degree is in the range of 0.5mm to 2.0mm；Using electric arc spraying process at least in the pan body Magnetic conduction coating is formed on the outer surface of bottom wall, wherein, the magnetic conduction coating is by ferrimagnet, nickel magnetic Material or cobalt magnetic material are made.
The preparation method for the pan that embodiment according to a second aspect of the present invention proposes, by punching press or Permeability magnetic material is prepared into pan body by the mode of casting, is added so that pan body can be used in electromagnetism Heat, wherein it is preferred to, pan body is by the magnetic conductivity such as 430 stainless steels stainless steel or cast iron system Into, and preferably, pan body is by permeability magnetic material monoblock cast or is stamped to form, thereafter can profit With electric arc spraying process in the outer surface of the bottom wall of the pan body or the outer surface of whole pan body It is upper formation magnetic conduction coating, so as to i.e. using the magnetic conduction coating change pan body in alternating electromagnetism off field Vibration mode, effectively to reduce or vibrations noise of the consumption pan body during Electromagnetic Heating. And research shows that the thickness of the bottom wall of pan body can be most in the range of 0.5mm to 2.0mm The noise that pan body is sent during to be effectively reduced Electromagnetic Heating, so that noise reduction is brighter It is aobvious, specifically, noise can about be reduced to 5dB to 10dB.
Wherein it is preferred to magnetic conduction coating preferably uses the oxide of magnetic conductive metal or magnetic conductive metal or led The oxide of magnetic metal alloy or magnetic conductive metal alloy is made, specifically, such as by iron or ferroalloy or The oxidation of the oxide of the iron or oxide of ferroalloy, the oxide of nickel or nickel alloy or nickel or nickel alloy The silk material such as thing or the oxide of oxide or cobalt alloy by cobalt or cobalt alloy or cobalt or powder are made, Wherein silk material is relatively low cost and easy to the feeding in spraying process, so as to reduce the system of magnetic conduction coating Standby cost.Meanwhile the porosity of the inside of the magnetic conduction coating can also absorb and consume the shake of partial noise Energy, so as to further significantly reduce noise of the pan body during Electromagnetic Heating.
In the above-mentioned technical solutions, it is preferable that the preparation method of pan also includes：At normal temperatures will be anti- Rust coating is sprayed on the outer surface of the magnetic conduction coating to form antirust coat, wherein the magnetic conduction applies Layer is ferromagnetism magnetic conduction coating, and the porosity of the magnetic conduction coating is 10% to 15%；Will be described anti- Become rusty coating drying process very first time at normal temperatures；To the dried antirust coat in preset temperature In the range of baking processing the second time.
In the technical scheme, it is preferable that when magnetic conduction coating is made up of ferrimagnet, due to iron Have the characteristics that it is perishable easily get rusty, thus one layer of antirust, waterproof can be set magnetic conduction coating is external Antirust coat, so as to enter shape antirust to the magnetic conduction coating on pan body using the antirust coat, prevent Water conservation, so as to prevent magnetic conduction coating from being reacted with solution such as water, acid or alkali, and cause magnetic conduction The situation that a large amount of iron rust occur to corrode and produce for coating surface occurs, and then can avoid the occurrence of magnetic conduction coating Come off or the problems such as disabler.Therefore, prepared again on the magnetic conduction coating of the pan body one layer it is resistance to The antirust coat of high temperature and antirust, digital preservation can be carried out to magnetic conduction coating and ensure magnetic conduction coating energy Enough long-term normal uses (1~2 year) and non-corrosive, contain magnetic conduction coating and high temperature resistant thereby using this And the pan body of the antirust coat of antirust, it both can effectively reduce the noise of its Electromagnetic Heating, and can Reach protection magnetic conduction coating long-term effectively, so that magnetic conduction coating can effectively work steadily in the long term. Wherein, the high temperature resistant in the antirust coat is temperature of the temperature in the range of 400 DEG C to 700 DEG C Degree, and normal temperature is worth being room temperature, typically at 25 DEG C or so, specifically, different regions, different seasons The room temperature of section is more variant, but is generally higher than equal to 0 DEG C and is less than or equal to 40 DEG C.
Wherein, antirust coat preferably by by the magnetic conduction coating rust prevention by applying liquid material coating formed, prevent Rust coating can also by magnetic conduction coating spray metal powder or metal wire material formed, anti-rusty gold It can be stainless steel or aluminium alloy to belong to material.But the antirust coat of the present invention preferably uses antirusting paint Spraying forms, because this kind forms the mode of antirust coat, relative to the spray metal on magnetic conduction coating Powder or silk material, which are formed for antirust coat, has the advantages that cost is low, easy processing, specifically, antirust Antirusting paint can be sprayed on magnetic conduction coating by coating with air gun at normal temperatures, also can directly be utilized certainly Brush etc. by antirusting paint brush on magnetic conduction coating, then by it after room temperature naturally dry is placed on, Carry out baking-curing to it to allow it to securely be attached to outside magnetic conduction coating, so as to prevent antirust The situation of coating shedding occurs, and antirust coat made of metal generally requires and passes through electric arc spraying process By metallic high temperature melting be sprayed on again on magnetic conduction coating, the process complexity of the electric arc spraying used in it and Apparently higher than air gun spraying or brush brush.
In the above-mentioned technical solutions, it is preferable that the antirust coat is organosilicon heat-resistant lacquer layer, right When processing is dried in the organosilicon heat-resistant lacquer layer, the very first time is in 30min to 45min In the range of, when baking processing is carried out to the organosilicon heat-resistant lacquer layer, the preset temperature range In the range of 250 DEG C to 300 DEG C, second time is in the range of 15min to 30min.
In the technical scheme, antirust coat can be served as using organosilicon heat-resistant lacquer layer, because having Machine silicon heat resistance paint has certain resistance to elevated temperatures, and is not easy to occur instead with solution such as water, acid or alkali Answer and cause magnetic conduction coating surface to occur to corrode and produce a large amount of iron rust, magnetic conduction coating shedding then occur Or the problems such as disabler, so as to by preparing one layer of organosilicon heat-resistant lacquer layer energy on magnetic conduction coating It is enough that digital preservation is carried out to magnetic conduction coating, ensure magnetic conduction coating can for a long time normal use (1~2 year) and Non-corrosive.Meanwhile use this stainless steel pan containing magnetic conduction coating and organosilicon heat-resistant lacquer layer Body, both can effectively reduce the noise of pan body Electromagnetic Heating, and and can reaches true long-term effectively Protect the purpose that magnetic conduction coating is capable of steady operation.Wherein it is preferred to organosilicon heat-resistant lacquer layer is by having Machine resin, heat-resisting extender pigment, auxiliary agent and solvent etc. form.
Wherein it is preferred to when the antirust coat is organosilicon heat-resistant lacquer layer, the organosilicon The thickness of high temperature resistant enamelled coating is in the range of 50 μm to 80 μm, to the organosilicon heat-resistant lacquer layer Natural air drying at room temperature, scope of the air-dried time in 30min to 45min are selected when being dried It is interior, and the baking temperature that the organosilicon heat-resistant lacquer layer after processing carries out baking-curing is air-dried to normal temperature Degree is in the range of 250 DEG C to 300 DEG C, and baking time is in the range of 15min to 30min.
In the technical scheme, by the way that organosilicon heat-resistant lacquer is dried in above-mentioned time range, with And can make it that the organosilicon heat-resistant lacquer layer to be formed has good for baking within above-mentioned time and temperature range Good adhesion property and good flatness.
In another technical scheme, it is preferable that the antirust coat is inorganic silicon high temperature resistant enamelled coating, right When processing is dried in the inorganic silicon high temperature resistant enamelled coating, the very first time is in 30min to 60min In the range of, when baking processing is carried out to the inorganic silicon high temperature lacquer, the preset temperature range exists In the range of 200 DEG C to 250 DEG C, second time is in the range of 25min to 35min.
In the technical scheme, in the case where carrying out the principle of corrosion protection to magnetic conduction coating, also using nothing Machine silicon high temperature resistant enamelled coating serves as antirust coat because inorganic silicon high temperature resistant enamelled coating also have it is certain resistance to High-temperature behavior, and be equally not easy to react with solution such as water, acid or alkali and cause magnetic conduction coating surface Generation is corroded and produces a large amount of iron rust, the problems such as magnetic conduction coating shedding or disabler then occurs, from And magnetic conduction coating can be carried out for a long time by preparing one layer of inorganic silicon high temperature resistant enamelled coating on magnetic conduction coating Protection, ensure that magnetic conduction coating being capable of normal use (1~2 year) and non-corrosive for a long time.Meanwhile use this Stainless steel pan body of the kind containing magnetic conduction coating and inorganic silicon high temperature resistant enamelled coating, both can effectively be reduced The noise of pan body Electromagnetic Heating, and can reaches ensures that magnetic conduction coating can stablize work long-term effectively Make purpose.
Wherein it is preferred to when the antirust coat is inorganic silicon high temperature resistant enamelled coating, the inorganic silicon is resistance to The thickness of high temperature enamelled coating enters in the range of 50 μm to 80 μm to the inorganic silicon high temperature resistant enamelled coating During row drying process, drying temperature is room temperature, to the inorganic silicon high temperature resistant on the magnetic conduction coating Enamelled coating carries out normal temperature and air-dries the time handled in the range of 30min to 60min, and place is air-dried to normal temperature Model of the baking temperature that the inorganic silicon high temperature resistant enamelled coating after reason is toasted at 200 DEG C to 250 DEG C In enclosing, baking time is more than or equal in the range of 25min to 35min.
In the technical scheme, by the way that inorganic silicon heat resistance paint is dried in above-mentioned time range, with And can make it that the inorganic silicon high temperature resistant enamelled coating to be formed has good for baking within above-mentioned time and temperature range Good adhesion property and good flatness.
In the above-mentioned technical solutions, it is preferable that utilize electric arc spraying process at least in the pot described Have also includes before forming magnetic conduction coating on the outer surface of the bottom wall of body：To the bottom wall of the pan body Outer surface or pan body bottom wall and side wall outer surface carry out blasting treatment, make the pan body The outer surface of bottom wall or scope of the roughness value at 60 μm to 80 μm of the outer surface of bottom wall and side wall It is interior.
In the technical scheme, the outer of the outer surface to pan body bottom wall or bottom wall and side wall can be passed through Surface carries out blasting treatment, so that the outer surface of the outer surface of the bottom wall of pan body or bottom wall and side wall With certain smoothness, so as to prevent because of the outer surface of the bottom wall of pan body or bottom wall and side wall Outer surface it is too coarse so that the caducous situation of magnetic conduction coating occurs, and then is sprayed by magnetic conduction coating It can be securely attached after being coated on the outer surface or the outer surface of bottom wall and side wall of the bottom wall of pan body On the outer surface of the outer surface of the bottom wall of pan body or bottom wall and side wall and difficult for drop-off.Together When, pass through the outer surface or the outer surface of bottom wall and side wall of the bottom wall to the pan body after blasting treatment Preheated so that the tack of pan body is stronger, so that magnetic conduction coating is more easy to be attached to pot On the outer surface or the outer surface of bottom wall and side wall for having the bottom wall of body.
Wherein it is preferred to the outer surface row blasting treatment of the bottom wall or bottom wall and side wall to pan body Afterwards, its roughness value is preferably in the range of 50 μm to 60 μm.
In the above-mentioned technical solutions, it is preferable that utilize electric arc spraying process at least in the pot described Have also includes before forming magnetic conduction coating on the outer surface of the bottom wall of body：To the pan after blasting treatment The bottom wall or bottom wall of body and the outer surface of side wall carry out the pre-heat treatment, wherein, the time of preheating exists In the range of 1min to 2min, the temperature of preheating is in the range of 100 DEG C to 150 DEG C.
In the technical scheme, when being preheated to the magnetic conduction coating after blasting treatment, the time of preheating It is preferred that in the range of 1min to 2min, the temperature of preheating in the range of 120 DEG C to 150 DEG C, Wherein, specifically suitable preheating temperature can be selected by the material of antirust coat, if being applied than antirust Layer is organosilicon heat-resistant lacquer layer, then preset temperature is in the range of 100 DEG C to 100 DEG C, if antirust Coating is inorganic silicon high temperature resistant enamelled coating, then presets temperature in the range of 120 DEG C to 150 DEG C.
In the above-mentioned technical solutions, it is preferable that sprayed in the outer surface to the magnetic conduction coating Before sand processing, in addition to：Bottom wall or the outer surface of bottom wall and side wall to the pan body are carried out Cleaning.
In the technical scheme, some greasy dirts, impurity etc. are always had on the pan body for preparing, and By carrying out pre-wash to it, the greasy dirt on pan body or impurity can be prevented to be embedded in magnetic conduction painting Between the outer surface or bottom wall and the outer surface of side wall of the bottom wall of layer and pan body, and then it can prevent from leading Magnetic coating occurs caducous situation because of the interference of greasy dirt, impurity etc. and occurred, wherein, specifically, Acetone can be used to wipe the impurity such as the greasy dirt on the outer surface for removing pan body.
In the above-mentioned technical solutions, it is preferable that antirusting paint is sprayed on the magnetic conduction at normal temperatures and applied Also included before with forming antirust coat on the outer surface of layer：The outer surface of the magnetic conduction coating is carried out Blasting treatment, make scope of the roughness value at 50 μm to 60 μm of the outer surface of the magnetic conduction coating It is interior.
In the technical scheme, it can be carried out by the outer surface of the magnetic conduction coating to preparing at sandblasting Reason so that magnetic conduction coating has certain smoothness, so as to prevent because magnetic conduction coating outer surface too It is coarse so that the caducous situation of antirust coat occurs, and then is applied antirust coat is sprayed on into magnetic conduction It can securely be attached on magnetic conduction coating and difficult for drop-off after on layer.
Wherein it is preferred to after carrying out blasting treatment to magnetic conduction coating, its roughness value preferably exists In the range of 50 μm to 60 μm,
In the above-mentioned technical solutions, it is preferable that utilize electric arc spraying process in the pan sheet described In the step of magnetic conduction coating is formed on the outer surface of body：Model of the electric arc spraying voltage in 30V to 34V In enclosing, System for Electric Arc Spraying Current is in the range of 160A to 180A, and electric arc spraying pressure is in 0.6Mpa To 0.7Mpa, electric arc spraying distance is in the range of 300mm to 400mm, electric arc Spray angle is in the range of 80 ° to 90 °.
In the technical scheme, before electric arc spraying is carried out, using masking frock to pan body The outer surface that magnetic conduction coating need not be formed is covered, to prevent the oxide of iron or ferroalloy or iron Or the spraying droplets of the oxide high-temperature melting of ferroalloy are to need not form on the face of magnetic conduction coating.Its In, it is preferable that ferromagnetism magnetic conduction coating is preferably made of FeSi3 B alloy wires, wherein, magnetic conduction applies Layer is of FeSi3 B alloy wires when being made, as follows the step of its electric arc spraying：At the bottom to pan body The outer surface of the outer surface of wall or bottom wall and side wall uses electric arc spraying by FeSi3 after carrying out the pre-heat treatment Silk material high-temperature fusion, and molten melt drop is sprayed at a high speed to the bottom of pan body under the auxiliary of high velocity air On the outer surface of wall, to form magnetic conduction coating on the outer surface of the bottom wall on pan body.Specifically Ground, electric arc spraying process is being utilized in the outer surface of the bottom wall of pan body or bottom wall and the appearance of side wall In the step of magnetic conduction coating is formed on face：Electric arc spraying voltage is in the range of 30V to 34V, electricity Arc spraying current in the range of 160A to 170A, electric arc spraying pressure in 0.6Mpa extremely In the range of 0.7Mpa, electric arc spraying distance is in the range of 300mm to 400mm, electric arc spray Angle is applied in the range of 80 ° to 90 °, the magnetic conduction that can make to prepare from above-mentioned technological parameter applies In the range of 10% to 15%, on the one hand the voidage in the range of this kind can absorb the voidage of layer With consumption partial noise vibration energy, so as to reduce pan body during Electromagnetic Heating Noise, the magnetic conduction coating that on the other hand this kind of preparation technology prepares can be with pan body phase interaction With, and then change mode of vibration of the molecule of pan body under alternating magnetic field, to realize the effect of noise reduction Fruit.
In above-mentioned multiple technical schemes, it is preferable that the thickness of the magnetic conduction coating at 50 μm extremely In the range of 300 μm, wherein, specifically, its thickness can be according to the material and antirust of magnetic conduction coating The material of coating is different and more has difference, such as, be made of FeSi3 B alloy wires in magnetic conduction coating, When antirust coat is organosilicon heat-resistant lacquer layer, the thickness of magnetic conduction coating is at 100 μm to 200 μm In the range of, and use FeSi3 B alloy wires to be made in magnetic conduction coating, antirust coat is inorganic silicon high temperature resistant During enamelled coating, the thickness of magnetic conduction coating is in the range of 200 μm to 300 μm.
In above-mentioned multiple technical schemes, it is preferable that the porosity of the magnetic conduction coating 10% to In the range of 15%.
In the technical scheme, the porosity of the inside of magnetic conduction coating can also absorb and consume partial noise Vibration energy, so as to further significantly reduce pan body making an uproar during Electromagnetic Heating Sound, and can farthest increase magnetic conduction coating in the range of porosity is arranged on into 10% to 15% Absorption and consumption to noise, and then pan body making an uproar during Electromagnetic Heating can be significantly reduced Sound.
In above-mentioned multiple technical schemes, it is preferable that the thickness of the antirust coat at 30 μm extremely In the range of 100 μm, specifically, for example antirust coat is that organosilicon heat-resistant lacquer layer or inorganic silicon are resistance to During high temperature enamelled coating, the thickness of organosilicon heat-resistant lacquer layer or inorganic silicon high temperature resistant enamelled coating is preferably at 50 μm To in the range of 80 μm.
In above-mentioned multiple technical schemes, it is preferable that the high temperature resistant temperature of the antirust coat exists In the range of 400 DEG C to 700 DEG C, Its high temperature resistant temperature is in the range of 500 DEG C to 700 DEG C.
The additional aspect and advantage of the present invention will be set forth in part in the description, partly will be from following Description in become obvious, or by the present invention practice recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is retouched from reference to accompanying drawings below to embodiment It will be apparent and be readily appreciated that in stating, wherein：
Fig. 1 shows the structural representation of pan according to an embodiment of the invention；
Fig. 2 shows another structural representation of pan according to an embodiment of the invention；
Fig. 3 shows the flow signal of the preparation method of pan according to an embodiment of the invention Figure；
Fig. 4 shows that another flow of the preparation method of pan according to an embodiment of the invention is shown It is intended to；
Fig. 5 shows that the another flow of the preparation method of pan according to an embodiment of the invention is shown It is intended to；
Fig. 6 shows that another flow of the preparation method of pan according to an embodiment of the invention is shown It is intended to.
Embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, with reference to attached The present invention is further described in detail for figure and embodiment.It should be noted that not In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, The present invention can also be different from other modes described here to implement using other, therefore, the present invention Protection domain do not limited by following public specific embodiment.
Carried out with reference to the pan of offers of the Fig. 1 to Fig. 6 to the present invention and its preparation method of pan Illustrate.
The embodiment of the first aspect of the present invention proposes a kind of pan, as depicted in figs. 1 and 2, bag Include：Pan body 1, the pan body 1 are made up of permeability magnetic material, the bottom wall of the pan body 1 Thickness in the range of 0.5mm to 2.0mm；Magnetic conduction coating 2, at least it is attached to the pan body On the outer surface of 1 bottom wall, the magnetic conduction coating 2 is by ferrimagnet, nickel magnetic material or cobalt magnetic Property material is made.
The pan that embodiment according to a first aspect of the present invention proposes, pan body 1 is by permeability magnetic material system Into, for example be made up of the magnetic conductivity such as 430 stainless steels stainless steel or cast iron, and preferably, pan sheet Body 1 is by permeability magnetic material monoblock cast or is stamped to form, and this kind sets and be able to ensure that the energy of pan body 1 Electromagnetic Heating is enough in, meanwhile, by being set on the outer surface of the bottom wall of pan body 1 by ferromagnetic Property material, nickel magnetic material or magnetic conduction coating 2 made of cobalt magnetic material, so as to utilization, this is led Magnetic coating 2 changes pan 1 vibration mode in alternating electromagnetism off field of body, effectively to reduce or consume Vibrations noise of the pan body 1 during Electromagnetic Heating.And study the bottom wall for showing pan body 1 Thickness when in the range of 0.5mm to 2.0mm noise reduction it is best, so as to significantly The noise that pan body 1 is sent when reducing Electromagnetic Heating, and then make it that noise reduction is more obvious, tool Body, by setting magnetic conduction coating noise can be reduced into about 5dB to 10dB.
Wherein it is preferred to magnetic conduction coating 2 preferably using magnetic conductive metal or magnetic conductive metal oxide or The oxide of magnetic conductive metal alloy or magnetic conductive metal alloy is made, Or the oxide of iron or oxide, nickel or the nickel alloy of ferroalloy or the oxide of nickel or the oxygen of nickel alloy Silk material or the powder system such as compound or the oxide of oxide or cobalt alloy by cobalt or cobalt alloy or cobalt Into, wherein, silk material is relatively low cost and easy to the feeding in spraying process, is applied so as to reduce magnetic conduction The preparation cost of layer.
In the above-mentioned technical solutions, it is preferable that certainly, also can on the outer surface of the side wall of pan shape Into the magnetic conduction coating 2.
In the above-mentioned technical solutions, it is preferable that the magnetic conduction coating is made up of ferrimagnet, described The porosity of magnetic conduction coating 2 is in the range of 10% to 15%.
In the technical scheme, magnetic conduction coating 2 can not only change to greatest extent made of ferrimagnet Become pan 1 vibration mode under high frequency alternating electromagnetic field of body, and then effectively reduce or consume pan Vibrations noise of the body 1 during Electromagnetic Heating, and its cost is also very low.Simultaneously by research It was found that the noise reduction of ferromagnetism magnetic conduction coating of the porosity in the range of 10% to 15% is best, Specifically, the porosity can be by controlling the spraying parameter of magnetic conduction coating 2 to obtain.
In the above-mentioned technical solutions, it is preferable that the magnetic conduction coating 2 is made up of ferrimagnet, institute The thickness of magnetic conduction coating 2 is stated in the range of 50 μm to 300 μm.
In the technical scheme, when magnetic conduction coating 2 is made up of ferrimagnet, the thickness of magnetic conduction coating 2 For degree degree in the range of 50 μm to 300 μm, the thickness is relatively thin, and it can be with pan body 1 Interaction, and then change vibration noise of the molecule of pan body 1 under alternating magnetic field, Jin Erneng Enough realize reduces the pot noise in Electromagnetic Heating of pan body 1.
In the above-mentioned technical solutions, it is preferable that pan also includes：Antirust coat 3, it is arranged on described On the outer surface of magnetic conduction coating 2, wherein, the outer surface of magnetic conduction coating 2 is magnetic conduction coating 2 away from pot Has the face of body 1.
In the technical scheme, when magnetic conduction coating 2 is made up of ferrimagnet, because iron has easily The features such as corrosion is easily got rusty, thus can be in one layer of antirust of the external setting of magnetic conduction coating 2, the antirust of waterproof Coating 3, prevent so as to enter shape to the magnetic conduction coating 2 on pan body 1 using the antirust coat 3 Rust, waterproofing protection, so as to prevent magnetic conduction coating 2 from being reacted with solution such as water, acid or alkali, and So that the situation that a large amount of iron rust occur to corrode and produce for the surface of magnetic conduction coating 2 occurs, and then can avoid out Existing magnetic conduction coating 2 comes off or the problems such as disabler.Therefore, in the magnetic conduction coating of the pan body 1 The antirust coat 3 of one layer of high temperature resistant and antirust is prepared on 2 again, magnetic conduction coating 2 can be carried out for a long time Protect and ensure magnetic conduction coating 2 can normal use (1~2 year) and non-corrosive for a long time, thereby using this The pan body 1 of antirust coat 3 of the kind containing magnetic conduction coating 2 and high temperature resistant and antirust, can both have Effect reduces the noise of its Electromagnetic Heating, and and can reaches protects magnetic conduction coating 2 long-term effectively, so as to lead Magnetic coating 2 can effectively work steadily in the long term.Wherein, the high temperature resistant in the antirust coat 3 is excellent It is selected within the temperature range of 400 DEG C to 700 DEG C.
Wherein it is preferred to the antirust coat 3 is to pass through the rust prevention by applying liquid material on the magnetic conduction coating 2 Coating is formed, in addition, antirust coat 3 can also by the spray metal powder on magnetic conduction coating 2 or Person's metal wire material is formed, and anti-rust metal material can be stainless steel or aluminium alloy.But the present invention's is anti- Rust coating is preferably formed using antirusting paint spraying, because this kind forms the mode of antirust coat 3, phase Have for the mode that the spray metal powder on magnetic conduction coating 2 or silk material form antirust coat into The advantages that this is low, easy processing.Specifically, antirusting paint can be sprayed on magnetic conduction with air gun at normal temperatures and apply On layer 2, also it can directly utilize brush etc. by antirusting paint brush on magnetic conduction coating 2 certainly, and metal Antirust coat 3 made of powder or silk material is melted metallic high temperature using electric arc spraying process due to needing Melt and spray to again on magnetic layer, thus the process complexity of the electric arc spraying used in it and cost are substantially high Sprayed in air gun.
In the above-mentioned technical solutions, it is preferable that the antirust coat 3 be inorganic silicon high temperature resistant enamelled coating, Organosilicon heat-resistant lacquer layer or ceramic layer.
In the technical scheme, inorganic silicon high temperature lacquer, organic silicon high-temperature paint and ceramics are respectively provided with resistance to height The advantages that temperature, antirust, it is thus possible to high temperature corrosion protection effectively and reliably is carried out to magnetic layer, together When, meanwhile, inorganic silicon high temperature lacquer and organic silicon high-temperature paint belong to water paint, are typically in a liquid state, Thus its can be sprayed at normal temperatures by air gun on magnetic conduction coating, and ceramic coating fall within it is water-based Coating, thus it can also be sprayed by air gun, and when adding other additives in ceramic coating Ceramic coating can also can now be prepared jelly in magnetic conduction coating by way of brush brush On.
In the above-mentioned technical solutions, it is preferable that the thickness of the antirust coat 3 is at 30 μm to 100 μm In the range of.
In the technical scheme, antirust coat 3 be not easy it is too thick because can so increase cost and can reduce The Electromagnetic Heating efficiency of pan body 1, another aspect antirust coat 3 be not easy to it is too thin because so not Corrosion protection can be effectively formed to magnetic conduction coating 2, thus shows the thickness of antirust coat 3 by experiment For degree when in the range of 30 μm to 100 μm, i.e., effectively protection can be formed to magnetic conduction coating 2 again will not So that the cost of antirust coat 3 is too high, meanwhile, the antirust coat 3 of this kind of thickness is to pan body 1 Magnetic conductivity does not influence substantially.
Fig. 3 shows the schematic flow sheet of the preparation method of pan according to an embodiment of the invention.
As shown in figure 3, the embodiment of the second aspect of the present invention proposes a kind of preparation side of pan Method, for preparing the pan of any one of first aspect embodiment offer, wherein, the preparation method bag of pan Include：Step 302, permeability magnetic material is prepared into pan body 1 by way of punching press or casting, its In, the thickness of the bottom wall of the pan body 1 is in the range of 0.5mm to 2.0mm；Step 304, Magnetic conduction coating is formed at least on the outer surface of the bottom wall of the pan body 1 using electric arc spraying process 2, wherein, the magnetic conduction coating 2 is made up of ferrimagnet, nickel magnetic material or cobalt magnetic material.
The preparation method for the pan that embodiment according to a second aspect of the present invention proposes, by punching press or Permeability magnetic material is prepared into pan body 1 by the mode of casting, so that pan body 1 can be used in electromagnetism Heating, wherein it is preferred to, pan body 1 is by the magnetic conductivity such as 430 stainless steels stainless steel or cast iron It is made, and preferably, pan body 1 is by permeability magnetic material monoblock cast or is stamped to form, thereafter Using electric arc spraying process in the outer surface of the bottom wall of the pan body 1 or whole pan body 1 Magnetic conduction coating 2 is formed on outer surface, is existed so as to change pan body 1 using the magnetic conduction coating 2 The vibration mode of alternating electromagnetism off field, effectively to reduce or consume pan body 1 in Electromagnetic Heating process In vibrations noise.And research shows the thickness of the bottom wall of pan body 1 being limited in 0.5mm Can be maximally efficient in the range of to 2.0mm the making an uproar of sending of pan body 1 when reducing Electromagnetic Heating Sound, so that noise reduction is more obvious, specifically, noise can about be reduced 5dB extremely 10dB。
Wherein it is preferred to magnetic conduction coating 2 preferably using magnetic conductive metal or magnetic conductive metal oxide or The oxide of magnetic conductive metal alloy or magnetic conductive metal alloy is made, Or the oxide of iron or oxide, nickel or the nickel alloy of ferroalloy or the oxide of nickel or the oxygen of nickel alloy Silk material or the powder system such as compound or the oxide of oxide or cobalt alloy by cobalt or cobalt alloy or cobalt Into, wherein, silk material is relatively low cost and easy to the feeding in spraying process, is applied so as to reduce magnetic conduction The preparation cost of layer 2.Meanwhile the porosity of the inside of the magnetic conduction coating 2 can also absorb and consumption portion Divide the vibration energy of noise, so as to further significantly reduce pan body 1 in Electromagnetic Heating mistake Noise in journey.
Fig. 4 shows the flow signal of the preparation method of pan according to another embodiment of the invention Figure.
In another embodiment, as shown in figure 4, the preparation method of pan includes：
Step 401, permeability magnetic material is prepared into pan body 1 by way of punching press or casting, Wherein, the thickness of the bottom wall of the pan body 1 is in the range of 0.5mm to 2.0mm.
Step 402, blasting treatment is carried out to the outer surface of the pan body 1, makes the pan body The roughness value of the outer surface of 1 bottom wall is in the range of 60 μm to 80 μm.In this step, can lead to Cross and blasting treatment is carried out to the outer surface of the bottom wall of pan body 1 or the outer surface of bottom wall and side wall, so that pot The outer surface or the outer surface of bottom wall and side wall for having the bottom wall of body 1 have certain smoothness, so as to Prevent because the outer surface of the outer surface of the bottom wall of pan body 1 or bottom wall and side wall is too coarse so that magnetic conduction 2 caducous situation of coating occurs, and then magnetic conduction coating 2 is being sprayed on to the bottom wall of pan body 1 It can securely be attached to the bottom wall of pan body 1 after on the outer surface of outer surface or bottom wall and side wall It is on the outer surface of outer surface or bottom wall and side wall and difficult for drop-off.Wherein it is preferred to pan body 1 Bottom wall outer surface row blasting treatment after, its roughness value is preferably in 50 μm to 60 μm of scope It is interior.
In addition, before step 402, in addition to：To the outer surface of the bottom wall of the pan body 1 Cleaned.In this step, by carrying out pre-wash to pan body 1, pan sheet can be prevented Greasy dirt or impurity on body 1 be embedded in the bottom wall of magnetic conduction coating 2 and pan body 1 outer surface or Between bottom wall and the outer surface of side wall, and then interference of the magnetic conduction coating 2 because of greasy dirt, impurity etc. can be prevented And caducous situation occur and occur, wherein, specifically, acetone can be used to wipe and remove pan body The impurity such as the greasy dirt on 1 outer surface.
Step 403, the outer surface of the bottom wall of the pan body 1 after blasting treatment is carried out at preheating Reason, wherein, the time of preheating in the range of 1min to 2min, the temperature of preheating at 100 DEG C extremely In the range of 150 DEG C.In this step, the bottom wall to the pan body 1 after blasting treatment is passed through The outer surface of outer surface or bottom wall and side wall is preheated so that and the tack of pan body 1 is stronger, So that magnetic conduction coating 2 is more easy to be attached to outer surface or bottom wall and the side wall of the bottom wall of pan body 1 Outer surface on.Wherein, the suitable preheating temperature of material selection of antirust coat 3 can specifically be passed through Degree, if being organosilicon heat-resistant lacquer layer than antirust coat 3, then preset temperature at 100 DEG C extremely In the range of 100 DEG C, if antirust coat 3 is inorganic silicon high temperature resistant enamelled coating, preset temperature at 120 DEG C extremely In the range of 150 DEG C.
Step 404, using electric arc spraying process at least the pan body 1 bottom wall outer surface Upper formation magnetic conduction coating 2, wherein, the magnetic conduction coating 2 by ferrimagnet, nickel magnetic material or Person's cobalt magnetic material is made.Wherein it is preferred in this step, electric arc spraying voltage in 30V extremely In the range of 34V, System for Electric Arc Spraying Current is in the range of 160A to 180A, electric arc spraying pressure In the range of 0.6Mpa to 0.7Mpa, scope of the electric arc spraying distance in 300mm to 400mm Interior, electric arc spraying angle is in the range of 80 ° to 90 °.In this step, electric arc spraying is being carried out Before, the outer surface that need not form magnetic conduction coating 2 to pan body 1 using masking frock is carried out Masking, to prevent the drop of the oxide high-temperature of the oxide of iron or ferroalloy or iron or ferroalloy melting Spraying to need not form on the face of magnetic conduction coating 2.Wherein, magnetic conduction coating 2 preferably uses FeSi3 B alloy wire is made, wherein, when magnetic conduction coating 2 is made of FeSi3 B alloy wires, its electric arc spraying Step is as follows：Carried out in the outer surface of the outer surface of the bottom wall to pan body 1 or bottom wall and side wall pre- Using electric arc spraying by FeSi3 silk material high-temperature fusions after heat treatment, and by molten melt drop in high velocity air Auxiliary under spray to pan body 1 at a high speed bottom wall outer surface on, with the bottom on pan body 1 Magnetic conduction coating 2 is formed on the outer surface of wall.Specifically, electric arc spraying process is being utilized in pan body In the step of magnetic conduction coating 2 are formed on the outer surface of the outer surface of 1 bottom wall or bottom wall and side wall：Electricity Arc spray voltage is in the range of 30V to 34V, model of the System for Electric Arc Spraying Current in 160A to 170A In enclosing, in the range of 0.6Mpa to 0.7Mpa, electric arc spraying distance exists electric arc spraying pressure In the range of 300mm to 400mm, electric arc spraying angle is in the range of 80 ° to 90 °, in selection The voidage for the magnetic conduction coating 2 that technological parameter can make to prepare is stated in the range of 10% to 15%, On the one hand voidage in the range of this kind can absorb and consume the vibration energy of partial noise, so as to Noise of the pan body 1 during Electromagnetic Heating is enough reduced, on the other hand prepared by this kind of preparation technology The magnetic conduction coating 2 gone out can interact with pan body 1, and then change the molecule of pan body 1 Mode of vibration under alternating magnetic field, to realize the effect of noise reduction.
Step 405, blasting treatment is carried out to the outer surface of the magnetic conduction coating 2, applies the magnetic conduction The roughness value of the outer surface of layer 2 is in the range of 50 μm to 60 μm.In this step, can lead to The outer surface for crossing the magnetic conduction coating 2 to preparing carries out blasting treatment, so that magnetic conduction coating 2 has one Fixed smoothness, so as to prevent because the outer surface of magnetic conduction coating 2 is too coarse so that antirust coat 3 Caducous situation occurs, and then it being capable of jail after antirust coat 3 is sprayed on magnetic conduction coating 2 It is attached to by ground on magnetic conduction coating 2 and difficult for drop-off.Wherein it is preferred to magnetic conduction coating 2 is carried out After blasting treatment, its roughness value is preferably in the range of 50 μm to 60 μm.
Step 405, at normal temperatures by antirusting paint be sprayed on the outer surface of the magnetic conduction coating 2 with Form antirust coat 3.In this step, when magnetic conduction coating 2 is made up of ferrimagnet, due to Iron have the characteristics that it is perishable easily get rusty, thus can be in the external one layer of antirust, anti-of setting of magnetic conduction coating 2 The antirust coat 3 of water, so as to utilize the antirust coat 3 to the magnetic conduction coating 2 on pan body 1 Enter shape antirust, waterproofing protection, so as to prevent that it is anti-that the solution such as magnetic conduction coating 2 and water, acid or alkali from occurring Should, and make it that the surface of magnetic conduction coating 2 occurs to corrode and produce the situation of a large amount of iron rust and occurred, Jin Erke Magnetic conduction coating 2 is avoided the occurrence of to come off or the problems such as disabler.Therefore, leading in the pan body 1 The antirust coat 3 of one layer of high temperature resistant and antirust is prepared on magnetic coating 2 again, magnetic conduction coating 2 can be entered Row digital preservation and ensure magnetic conduction coating 2 can normal use (1~2 year) and non-corrosive for a long time, so as to Using the pan body 1 of this antirust coat 3 containing magnetic conduction coating 2 and high temperature resistant and antirust, both The noise of its Electromagnetic Heating can be effectively reduced, and can reaches protects magnetic conduction coating 2 long-term effectively, So that magnetic conduction coating 2 can effectively work steadily in the long term.Wherein, it is resistance in the antirust coat 3 High temperature is temperature of the temperature in the range of 400 DEG C to 700 DEG C, and normal temperature is worth being room temperature, typically At 25 DEG C or so, specifically, different regions, the room temperature of Various Seasonal are more variant, but general big In equal to 0 DEG C be less than or equal to 40 DEG C.
Step 406, by the antirust coat 3 drying process very first time at normal temperatures.In the step In, it can make the coagulation forming of antirust coat 3 by the way that antirust coat 3 is dried.
Step 407, processing the is toasted in preset temperature range to the dried antirust coat 3 Two times.In this step, antirust coat 3 can be made by carrying out baking-curing to antirust coat 3 Securely it is attached in the outside wall surface of pan body 1, so as to prevent thermostable rustproof coating 3 from coming off Situation occur.
In above-mentioned multiple technical schemes, it is preferable that the thickness of the magnetic conduction coating 2 at 50 μm extremely In the range of 300 μm, wherein, specifically, its thickness can be according to the material of magnetic conduction coating 2 and anti- The material of rust coating 3 is different and more has difference, such as, use FeSi3 B alloy wires in magnetic conduction coating 2 It is made, when antirust coat 3 is organosilicon heat-resistant lacquer layer, the thickness of magnetic conduction coating 2 is at 100 μm To in the range of 200 μm, and it is made in magnetic conduction coating 2 of FeSi3 B alloy wires, antirust coat 3 For inorganic silicon high temperature resistant enamelled coating when, the scope of the thickness of magnetic conduction coating 2 at 200 μm to 300 μm It is interior.
In above-mentioned multiple technical schemes, it is preferable that the porosity of the magnetic conduction coating 2 10% to In the range of 15%.
In the technical scheme, the porosity of the inside of magnetic conduction coating 2 can also absorb and consume part and make an uproar The vibration energy of sound, so as to further significantly reduce pan body 1 during Electromagnetic Heating Noise, and can farthest increase magnetic conduction in the range of porosity is arranged on into 10% to 15% Absorption and consumption of the coating 2 to noise, and then pan body 1 can be significantly reduced in Electromagnetic Heating mistake Noise in journey.Wherein, antirust coat 3 is preferably made up of antirusting paint, because antirusting paint is relative There is cheap, easy processing for antirust coat made of other metals, thus use antirust Antirust coat made of coating has the advantages that cost is low, easy processing.Specifically, antirust coat 3 can be Antirusting paint is sprayed on magnetic conduction coating 2 with air gun under normal temperature, also can directly utilize brush etc. certainly By antirusting paint brush on magnetic conduction coating 2, then by it after room temperature naturally dry is placed on, to it Carry out baking-curing to allow it to securely be attached to outside magnetic conduction coating 2, so as to prevent antirust to apply The situation that layer 3 comes off occurs, and antirust coat 3 is generally required by electric arc spraying work made of metal Skill could be sprayed on magnetic conduction coating 2, and electric arc spraying process is sprayed or brushed apparently without air gun Son brush convenience, and the cost of electric arc spraying process also apparently higher than air gun spraying or brush brush into This.
In the above-mentioned technical solutions, it is preferable that the antirust coat 3 is organosilicon heat-resistant lacquer layer, When processing is dried to the organosilicon heat-resistant lacquer layer, the very first time in 30min extremely In the range of 45min, when baking processing is carried out to the organosilicon heat-resistant lacquer layer, the default temperature Scope is spent in the range of 250 DEG C to 300 DEG C, model of second time in 15min to 30min In enclosing.
In the technical scheme, antirust coat 3 can be served as using organosilicon heat-resistant lacquer layer, because Organosilicon heat-resistant lacquer has certain resistance to elevated temperatures, and is not easy to occur with solution such as water, acid or alkali React and cause the surface of magnetic conduction coating 2 to occur to corrode and produce a large amount of iron rust, magnetic conduction coating then occur 2 are come off or the problems such as disabler, and one layer of resistance to height of organosilicon is prepared on magnetic conduction coating 2 so as to pass through Warm enamelled coating can carry out digital preservation to magnetic conduction coating 2, ensure that magnetic conduction coating 2 can normally make for a long time The non-corrosive with (1~2 year).Meanwhile contain magnetic conduction coating 2 and organosilicon heat-resistant lacquer using this The stainless steel pan body 1 of layer, the noise of the Electromagnetic Heating of pan body 1 both can be effectively reduced, again Can reach ensures that magnetic conduction coating 2 is capable of the purpose of steady operation long-term effectively.Wherein it is preferred to Organosilicon heat-resistant lacquer layer is made up of organic resin, heat-resisting extender pigment, auxiliary agent and solvent etc..
Wherein it is preferred to when the antirust coat 3 is organosilicon heat-resistant lacquer layer, it is described organic The thickness of silicon high temperature resistant enamelled coating is in the range of 50 μm to 80 μm, to the organosilicon heat-resistant lacquer Natural air drying at room temperature, model of the air-dried time in 30min to 45min are selected when layer is dried In enclosing, and the baking that the organosilicon heat-resistant lacquer layer after processing carries out baking-curing is air-dried to normal temperature Temperature is in the range of 250 DEG C to 300 DEG C, and baking time is in the range of 15min to 30min.
In another technical scheme, it is preferable that the antirust coat 3 is inorganic silicon high temperature resistant enamelled coating, When processing is dried to the inorganic silicon high temperature resistant enamelled coating, the very first time in 30min extremely In the range of 60min, when baking processing is carried out to the inorganic silicon high temperature lacquer, the preset temperature model It is trapped among in the range of 200 DEG C to 250 DEG C, scope of second time in 25min to 35min It is interior.
It is also available in the case where carrying out the principle of corrosion protection to magnetic conduction coating 2 in the technical scheme Inorganic silicon high temperature resistant enamelled coating serves as antirust coat 3 because inorganic silicon high temperature resistant enamelled coating also have it is certain Resistance to elevated temperatures, and be equally not easy to react with the solution such as water, acid or alkali and cause magnetic conduction coating 2 surfaces, which occur to corrode, simultaneously produces a large amount of iron rust, magnetic conduction coating 2 then occurs and comes off or disabler etc. Problem, so as to be applied by preparing one layer of inorganic silicon high temperature resistant enamelled coating on magnetic conduction coating 2 to magnetic conduction Layer 2 carries out digital preservations, ensure magnetic conduction coating 2 can for a long time normal use (1~2 year) without life Rust.Meanwhile use this stainless steel pan sheet containing magnetic conduction coating 2 and inorganic silicon high temperature resistant enamelled coating Body 1, both can effectively reduce the noise of the Electromagnetic Heating of pan body 1, and and can reaches long-term effectively Ensure that magnetic conduction coating 2 being capable of steady operation purpose.
Wherein it is preferred to when the antirust coat 3 is inorganic silicon high temperature resistant enamelled coating, the inorganic silicon The thickness of high temperature resistant enamelled coating is in the range of 50 μm to 80 μm, to the inorganic silicon high temperature resistant enamelled coating When processing is dried, drying temperature is room temperature, resistance to the inorganic silicon on the magnetic conduction coating 2 High temperature enamelled coating carries out normal temperature and air-dries the time handled in the range of 30min to 60min, to normal temperature wind The baking temperature that the inorganic silicon high temperature resistant enamelled coating after dry-cure is toasted is at 200 DEG C to 250 DEG C In the range of, baking time is more than or equal in the range of 25min to 35min.
In above-mentioned multiple technical schemes, it is preferable that the thickness of the antirust coat 3 at 30 μm extremely In the range of 100 μm, specifically, for example antirust coat 3 is organosilicon heat-resistant lacquer layer or inorganic silicon During high temperature resistant enamelled coating, the thickness of organosilicon heat-resistant lacquer layer or inorganic silicon high temperature resistant enamelled coating preferably exists In the range of 50 μm to 80 μm.
In above-mentioned multiple technical schemes, it is preferable that the high temperature resistant temperature of the antirust coat 3 exists In the range of 400 DEG C to 700 DEG C, specifically, for example antirust coat 3 is organosilicon heat-resistant lacquer layer When, its high temperature resistant temperature is in the range of 500 DEG C to 700 DEG C.
The preparation side of pan according to an embodiment of the invention is specifically described with reference to Fig. 5 Method, wherein, the preparation method of pan comprises the following steps：
Step 501, pan body 1 is prepared using 430 stainless steels, in this step, preferably will Pan body 1 is integrally cast.
Step 502, the outer bottom wall of pan body 1 is cleaned using acetone, in the step In, the impurity such as the greasy dirt of outer bottom wall for removing pan body 1 are wiped using acetone.
Step 503, blasting treatment is carried out to the outer bottom wall cleaned with sand-blasting machine, it is thick obtains surface Outer bottom wall of the rugosity value at 60 μm to 80 μ ms, and will be residual on outer bottom wall with high velocity air The grit stayed is blown clean.
Step 504, the outer bottom wall of pan body 1 is preheated using oxy-acetylene flame, at this In step, in the range of 100 DEG C to 130 DEG C, preheating time exists the preheating temperature of the pre-heat treatment In the range of 1min to 2min.
Step 505, using cover frock by the outer bottom wall of pan body 1 be not required to spray magnetic conduction coating 2 fringe region is blocked.
Step 506, electric arc spraying is used immediately after preheat by FeSi3 alloy wire high temperature melting Melt, and spray to molten melt drop on the outer bottom wall after preheating at a high speed under the auxiliary of high velocity air, with The magnetic conduction coating 2 with preset thickness and default porosity is formed, now, magnetic conduction coating 2 is magnetic conduction Coating 2.In this step, scope of the preset thickness of magnetic conduction coating 2 at 50 μm to 300 μm Interior, in the range of 10% to 15%, electric arc spraying voltage exists the default porosity of magnetic conduction coating 2 In the range of 32V to 34V, System for Electric Arc Spraying Current is in the range of 160A to 170A, electric arc spraying Pressure is in the range of 0.6Mpa to 0.7Mpa, and the distance of electric arc spraying is in 300mm to 400mm's In the range of, electric arc spraying angle is in the range of 80 ° to 90 °.
Step 507, blasting treatment is carried out to magnetic conduction coating 2 using sand-blasting machine, obtains roughness value and exist Magnetic conduction coating 2 in 50 μm to 60 μ ms, it is then with high velocity air that the surface of magnetic conduction coating 2 is residual The grit stayed is blown clean.
Step 508, organosilicon heat-resistant lacquer is sprayed on roughness value at 50 μm extremely using spraying coating process On magnetic conduction coating 2 in 60 μ ms, and normal temperature is carried out to the organosilicon heat-resistant lacquer on magnetic conduction coating 2 (temperature is 20 DEG C) air-dries processing, wherein, the thickness of organosilicon heat-resistant lacquer is at 50 μm to 80 μm In the range of, the time that the air-dried processing of normal temperature is carried out to the organosilicon heat-resistant lacquer layer on magnetic conduction coating 2 exists In the range of 30min to 45min.
Step 509, the organosilicon heat-resistant lacquer after processing is air-dried to normal temperature and carries out baking-curing, to lead Organosilicon heat-resistant lacquer layer is formed on magnetic coating 2, in this step, the organosilicon after being air-dried to normal temperature is resistance to High temperature enamelled coating carries out the baking-curing temperature of baking-curing in the range of 250 DEG C to 300 DEG C, baking-curing Time is in the range of 15min to 30min.
The preparation side of pan according to another embodiment of the invention is specifically described with reference to Fig. 6 Method, wherein, the preparation method of pan comprises the following steps：
Step 601, pan body 1 is prepared using 430 stainless steels, in this step, preferably will Pan body 1 is integrally cast.
Step 602, the outer bottom wall of pan body 1 is cleaned using acetone, in the step In, the impurity such as the greasy dirt of outer bottom wall for removing pan body 1 are wiped using acetone.
Step 603, blasting treatment is carried out to the outer bottom wall cleaned with sand-blasting machine, it is thick obtains surface Outer bottom wall of the rugosity value at 60 μm to 80 μ ms, and will be residual on outer bottom wall with high velocity air The grit stayed is blown clean.
Step 604, the outer bottom wall of pan body 1 is preheated using oxy-acetylene flame, at this In step, in the range of 120 DEG C to 150 DEG C, preheating time exists the preheating temperature of the pre-heat treatment In the range of 1min to 2min.
Step 605, using cover frock by the outer bottom wall of pan body 1 be not required to spray magnetic conduction coating 2 fringe region is blocked.
Step 606, after preheat immediately using electric arc spraying by FeSi3 alloy wire high-temperature fusions, And spray to molten melt drop on the outer bottom wall after preheating at a high speed under the auxiliary of high velocity air, to be formed Magnetic conduction coating 2 with preset thickness and default voidage, specifically, magnetic conduction coating 2 apply for magnetic conduction Layer 2.In this step, the preset thickness of magnetic conduction coating 2 is in the range of 50 μm to 300 μm, The default porosity of magnetic conduction coating 2 in the range of 10% to 15%, electric arc spraying voltage in 30V extremely In the range of 32V, in the range of 170A to 180A, electric arc spraying pressure exists System for Electric Arc Spraying Current In the range of 0.6Mpa to 0.7Mpa, the scope of the distance of electric arc spraying in 300mm to 400mm Interior, electric arc spraying angle is in the range of 80 ° to 90 °.
Step 607, a blasting treatment is carried out to magnetic conduction coating 2 using sand-blasting machine, obtains roughness It is worth magnetic conduction coating 2 in 50 μm to 60 μ ms, then with high velocity air by magnetic conduction coating 2 The grit of remained on surface is blown clean.
Step 608, inorganic silicon heat resistance paint is sprayed on magnetic conduction coating 2 using spraying coating process.It is and right Inorganic silicon heat resistance paint on magnetic conduction coating 2 carries out normal temperature (temperature is 20 DEG C) and air-dries processing, wherein, The thickness of inorganic silicon heat resistance paint is in the range of 50 μm to 80 μm, to inorganic on magnetic conduction coating 2 Silicon heat resistance paint carries out normal temperature and air-dries the time of processing in the range of 30min to 60min.
Step 609, to normal temperature air-dry processing after inorganic silicon high temperature resistant enamelled coating carry out baking-curing, with Inorganic silicon high temperature resistant enamelled coating is formed on magnetic conduction coating 2, in this step, the inorganic silicon after being air-dried to normal temperature High temperature resistant enamelled coating carries out the baking-curing temperature of baking-curing in the range of 200 DEG C to 250 DEG C, and baking is solid Change the time in 30min or so.
Technical scheme is described in detail above in association with accompanying drawing, passes through the technical side of the present invention It case, can effectively improve the preparation method of graphite pan, greatly shorten graphite pan body 1 Fabrication cycle, so as to improve processing efficiency, while processing cost is greatly reduced.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for ability For the technical staff in domain, the present invention can have various modifications and variations.It is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc., the guarantor of the present invention should be included in Within the scope of shield.

Claims (14)

  1. A kind of 1. pan, it is characterised in that including：
    Pan body, the pan body are made up of permeability magnetic material, the thickness of the bottom wall of the pan body In the range of 0.5mm to 2.0mm；
    Magnetic conduction coating, on the outer surface for the bottom wall for being at least attached to the pan body, the magnetic conduction coating It is made up of ferrimagnet, nickel magnetic material or cobalt magnetic material.
  2. 2. pan according to claim 1, it is characterised in that
    The magnetic conduction coating is made up of ferrimagnet, and the porosity of the magnetic conduction coating is 10% to 15% In the range of.
  3. 3. pan according to claim 2, it is characterised in that
    The thickness of the magnetic conduction coating is in the range of 50 μm to 300 μm.
  4. 4. the pan according to Claims 2 or 3, it is characterised in that also include：
    Antirust coat, it is arranged on the outer surface of the magnetic conduction coating.
  5. 5. pan according to claim 4, it is characterised in that
    The antirust coat by the magnetic conduction coating rust prevention by applying liquid material coating formed.
  6. 6. pan according to claim 5, it is characterised in that the antirusting paint is that inorganic silicon is high Temperature paint coating, organic silicon high-temperature paint coating or ceramic coating.
  7. 7. pan according to claim 4, it is characterised in that the thickness range of the antirust coat In the range of 30 μm to 100 μm.
  8. A kind of 8. manufacture method of pan, for preparing the pot as any one of claim 1 to 7 Tool, it is characterised in that including：
    Permeability magnetic material is prepared into pan body by way of punching press or casting, wherein, the pan The thickness of the bottom wall of body is in the range of 0.5mm to 2.0mm；
    Magnetic conduction painting is formed at least on the outer surface of the bottom wall of the pan body using electric arc spraying process Layer, wherein, the magnetic conduction coating is made up of ferrimagnet, nickel magnetic material or cobalt magnetic material.
  9. 9. pan preparation method according to claim 8, it is characterised in that also include：
    Antirusting paint is sprayed on the outer surface of the magnetic conduction coating to form antirust coat at normal temperatures, Wherein described magnetic conduction coating is ferromagnetism magnetic conduction coating, and the porosity of the magnetic conduction coating be 10% to 15%；
    By antirust coat drying process very first time at normal temperatures；
    The second time of processing is toasted in preset temperature range to the dried antirust coat.
  10. 10. pan preparation method according to claim 9, it is characterised in that
    The antirust coat is organosilicon heat-resistant lacquer layer, and the organosilicon heat-resistant lacquer layer is dried During processing, the very first time in the range of 30min to 45min, to the organosilicon heat-resistant lacquer When layer carries out baking processing, the preset temperature range is in the range of 250 DEG C to 300 DEG C, and described second Time is in the range of 15min to 30min；Or
    The antirust coat is inorganic silicon high temperature resistant enamelled coating, and the inorganic silicon high temperature resistant enamelled coating is dried During processing, the very first time in the range of 30min to 60min, enters to the inorganic silicon high temperature lacquer During row baking processing, the preset temperature range is in the range of 200 DEG C to 250 DEG C, second time In the range of 25min to 35min.
  11. 11. pan preparation method according to claim 8, it is characterised in that utilize electricity described Arc spraying coating process also wraps before forming magnetic conduction coating at least on the outer surface of the bottom wall of the pan body Include：
    Blasting treatment is carried out to the outer surface of the bottom wall of the pan body, makes the bottom wall of the pan body Outer surface rugosity value in the range of 60 μm to 80 μm.
  12. 12. pan preparation method according to claim 11, it is characterised in that utilize electricity described Arc spraying coating process also wraps before forming magnetic conduction coating at least on the outer surface of the bottom wall of the pan body Include：
    The pre-heat treatment is carried out to the outer surface of the bottom wall of the pan body after blasting treatment, wherein, preheating Time, the temperature of preheating was in the range of 100 DEG C to 150 DEG C in the range of 1min to 2min.
  13. 13. pan preparation method according to claim 9, it is characterised in that at normal temperatures will be anti- Rust coating is sprayed on the outer surface of the magnetic conduction coating also to include before forming antirust coat：
    Blasting treatment is carried out to the outer surface of the magnetic conduction coating, make the magnetic conduction coating outer surface it is thick Rugosity value is in the range of 50 μm to 60 μm.
  14. 14. the pan preparation method according to any one of claim 8 to 13, it is characterised in that
    Led in described at least formed using electric arc spraying process on the outer surface of the bottom wall of the pan body In the step of magnetic coating：In the range of 30V to 34V, System for Electric Arc Spraying Current exists electric arc spraying voltage In the range of 160A to 170A, electric arc spraying pressure is in the range of 0.6Mpa to 0.7Mpa, electric arc Spray distance is in the range of 300mm to 400mm, scope of the electric arc spraying angle at 80 ° to 90 ° It is interior.
CN201610443171.0A 2016-06-17 2016-06-17 Cookware and preparation method thereof Active CN107510351B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109355610A (en) * 2018-09-30 2019-02-19 中国科学院宁波材料技术与工程研究所 Electromagnetic heating coating for metal substrate and preparation method and application thereof
CN109517695A (en) * 2019-01-25 2019-03-26 覃永任 A kind of alcoholic installation for fermenting
CN113116117A (en) * 2019-12-31 2021-07-16 佛山市顺德区美的电热电器制造有限公司 Container, cooking utensil and manufacturing method of container
CN113545648A (en) * 2020-04-07 2021-10-26 佛山市顺德区美的电热电器制造有限公司 Container, cooking utensil and manufacturing method of container
CN114794841A (en) * 2021-12-28 2022-07-29 浙江绍兴苏泊尔生活电器有限公司 Composite layer for cookware and preparation method thereof, cookware and cooking utensils
CN115474828A (en) * 2022-09-30 2022-12-16 武汉苏泊尔炊具有限公司 Magnetic conductive material for cookware, preparation method thereof and cookware comprising magnetic conductive material

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CN101880850A (en) * 2009-05-06 2010-11-10 慈溪光华金属复合材料有限公司 Method for thermal spraying of composite bottom layer of aluminum pan of electromagnetic oven
CN105534318A (en) * 2015-11-18 2016-05-04 浙江伯是购厨具有限公司 Long-acting magnetic-conductive and anti-corrosion composite coating for electromagnetic cooker and preparation method of composite coating

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101880850A (en) * 2009-05-06 2010-11-10 慈溪光华金属复合材料有限公司 Method for thermal spraying of composite bottom layer of aluminum pan of electromagnetic oven
CN105534318A (en) * 2015-11-18 2016-05-04 浙江伯是购厨具有限公司 Long-acting magnetic-conductive and anti-corrosion composite coating for electromagnetic cooker and preparation method of composite coating

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109355610A (en) * 2018-09-30 2019-02-19 中国科学院宁波材料技术与工程研究所 Electromagnetic heating coating for metal substrate and preparation method and application thereof
CN109517695A (en) * 2019-01-25 2019-03-26 覃永任 A kind of alcoholic installation for fermenting
CN113116117A (en) * 2019-12-31 2021-07-16 佛山市顺德区美的电热电器制造有限公司 Container, cooking utensil and manufacturing method of container
CN113116117B (en) * 2019-12-31 2024-03-01 佛山市顺德区美的电热电器制造有限公司 Container, cooking utensil and manufacturing method of container
CN113545648A (en) * 2020-04-07 2021-10-26 佛山市顺德区美的电热电器制造有限公司 Container, cooking utensil and manufacturing method of container
CN114794841A (en) * 2021-12-28 2022-07-29 浙江绍兴苏泊尔生活电器有限公司 Composite layer for cookware and preparation method thereof, cookware and cooking utensils
CN115474828A (en) * 2022-09-30 2022-12-16 武汉苏泊尔炊具有限公司 Magnetic conductive material for cookware, preparation method thereof and cookware comprising magnetic conductive material

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