CN109333768B - Method for manufacturing special-shaped mica part - Google Patents
Method for manufacturing special-shaped mica part Download PDFInfo
- Publication number
- CN109333768B CN109333768B CN201811215807.1A CN201811215807A CN109333768B CN 109333768 B CN109333768 B CN 109333768B CN 201811215807 A CN201811215807 A CN 201811215807A CN 109333768 B CN109333768 B CN 109333768B
- Authority
- CN
- China
- Prior art keywords
- mica
- die
- mold
- manufacturing
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010445 mica Substances 0.000 title claims abstract description 92
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 92
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 238000001723 curing Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000004615 ingredient Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000008213 purified water Substances 0.000 claims abstract description 5
- 238000000137 annealing Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 8
- 239000010962 carbon steel Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000003232 water-soluble binding agent Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- AUTNMGCKBXKHNV-UHFFFAOYSA-P diazanium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [NH4+].[NH4+].O1B([O-])OB2OB([O-])OB1O2 AUTNMGCKBXKHNV-UHFFFAOYSA-P 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 11
- 239000011230 binding agent Substances 0.000 abstract description 6
- 238000011068 loading method Methods 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000010459 dolomite Substances 0.000 abstract 1
- 229910000514 dolomite Inorganic materials 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 235000019580 granularity Nutrition 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a method for manufacturing mica special-shaped parts, which comprises the steps of fully mixing natural dolomite powder or artificially synthesized mica powder with different fineness with short glass fiber to obtain a mixture, dissolving an inorganic binder in purified water with the temperature of more than 50 ℃ and stirring to obtain the mica special-shaped partsFully mixing the ingredients with the aqueous solution to obtain a mixture, weighing the mixture according to the mass required by the mica parts, then loading the mixture into an assembled mould, loading the mould into a press, starting the press to apply pressure to the mould, gradually applying pressure for multiple times to reach the pressure required by the process and keeping the pressure for a certain time, releasing the pressure of the press, taking out the mould, removing an outer mould, locking an inner mould up and down, placing the inner mould into a tunnel type oven to perform drying, heating, curing and annealing one-time running water treatment according to different temperature regions, removing an inner mould locking bolt, and placing the cured and formed mica parts into a 45-55 c oven0When the batch size is reached, the internal stress eliminating treatment is carried out and then the moisture-proof treatment is carried out.
Description
Technical Field
The invention relates to a manufacturing method of a special-shaped mica part, in particular to a manufacturing method of a special-shaped mica part with the working temperature of 500 ℃ and 1000 ℃.
Background
The special-shaped mica part made of mica has excellent performances of good compression resistance, bending resistance, corrosion resistance, impact resistance, lightning protection, electric arc protection, high insulation, low temperature resistance (below minus 60 ℃), high temperature resistance (250 ℃) and the like, and is widely applied to the high-tech application fields of power transmission and distribution systems of aerospace, aviation, war industry, nuclear power and radar, lightning protection electric engineering, submarines, automobiles, shipbuilding, ultrahigh-pressure transmission networks and the like. With the rapid development of high and new technologies, the application fields of the technologies are wider.
The prior art for manufacturing the special-shaped mica part is manufactured by that a single piece of mica paper is soaked in organic silicon resin, dried to remove a solvent, overlapped one by one (usually hundreds of even thousands of pieces) according to the thickness requirement, sent into a hot press to be pressed for 24 hours to manufacture a plate material of the special-shaped mica part, then the plate material is cut into polygonal blocks according to the external dimension, and then a machining center carries out various procedures for manufacturing, and the manufacturing method has a plurality of defects, mainly:
1. the processing process is complex and long in period, the raw material waste is large, and the manufacturing cost is high;
2. the board is made of hundreds of even thousands of single-layer mica papers, and is easy to separate in processing, and parts are scrapped to be discarded before any processing process due to layering;
3. the adhesive is organic silicon resin, the long-term working temperature is less than 250 ℃, and the application range is limited.
In order to meet the requirement of modern scientific technology developing at a high speed on high-temperature-resistant insulating materials, particularly the requirement on high-temperature-resistant special-shaped mica parts, the method for manufacturing the special-shaped mica parts is particularly important.
Disclosure of Invention
The invention aims to provide a method for manufacturing a special-shaped mica part, which has the advantages of simple manufacturing process, short processing period, no delamination and fracture in the processing process, high yield, less loss and the like. The invention has the advantages that the forming and curing temperature is relatively low, so that the excellent performance of the product obtained by the traditional processing technology is kept, and the long-term working temperature can be increased to more than 500-1000 ℃.
The invention discloses a manufacturing method of special-shaped mica parts, which is characterized in that a blank is subjected to compression molding at normal temperature, wherein a water-soluble adhesive is adopted, the curing treatment is completed through a tunnel type oven, the curing temperature is less than 250 ℃, the curing treatment is completed by intelligently controlling the time and the temperature in the tunnel type oven at one time, continuous flow operation can be realized, the crystal and the physical and chemical properties of natural mica are kept intact due to the curing temperature of less than 250 ℃, and the heat resistance is ultrahigh, and the method specifically comprises the following steps:
s1: preparing materials: according to the weight, 85-95 parts of mica powder with different meshes are selected, 10 parts of short glass fiber with the length less than 10mm are taken, and the mica powder and the short glass fiber are mixed and stirred uniformly; the glass fiber with the length less than 10mm is adopted and is mixed with the mica powder to be formed, so that the impact resistance and the mechanical strength are obviously improved;
s2: preparing a water-soluble binder: according to the mass, 5-15 parts of ammonium dihydrogen phosphate, 4-14 parts of amine tetraborate and 76-86 parts of purified water with the water temperature of more than 50 ℃ are taken, stirred uniformly and dissolved fully; the purified water is selected to overcome the influence on the electrical performance of the product caused by water quality difference;
s3: manufacturing a mould: the method comprises the following steps of (1) preparing an inner mold from polytetrafluoroethylene resin, and injection molding a female mold and a male mold according to the shape and the size of a mica part to be prepared in a core cavity of the inner mold; the carbon steel is used for manufacturing an external mold, the inner cavity of the external mold is in movable fit with the external dimension of the internal mold, the carbon steel is used for manufacturing a male mold for pressing, and the size of the male mold for pressing is smaller than that of the male mold of the internal mold; the mold is injection molded by polytetrafluoroethylene, is easy to copy, is suitable for turnover of batch production, and simultaneously meets the requirement of mica parts on curing temperature, the outer mold is made of common carbon steel, the cost is reduced, the inner mold is protected, and the tensile strength of the inner mold is improved;
s4: molding: mixing the ingredients and the water-soluble binder by weight to obtain a mixture, fixing an outer die on a workbench of a press machine, placing a female die of an inner die in a cavity of the outer die, placing a male die for pressing into the female die of the inner die, closing the press machine, fixing the male die of the inner die on a transverse cross of the press machine, starting the press machine, pouring the mixture into a core cavity of the female die of the inner die, starting the press machine, repeatedly applying pressure, and then starting a reverse ejection device to take out the inner die; the molding and pressing are carried out at normal temperature, and the pressing equipment is a universal four-column press with a reverse ejection device;
s5: curing treatment: folding and locking the taken inner mold and the male mold of the inner mold, putting the inner mold and the male mold into a tunnel type dryer for drying, heating, curing and annealing, then taking out the mica part, putting the mica part into an oven, keeping the temperature of the oven at 50-60 ℃, and then carrying out internal stress elimination treatment; the temperature and time of the tunnel type drying oven are realized by an intelligent control technology, continuous flow production can be realized, and heat-insulating asbestos cloth is arranged among different temperature areas in the drying oven, so that hot air channeling can be prevented; after the internal stress is eliminated, the mica part cannot deform in the processes of storage, transportation and use;
s6: moisture-proof treatment: mixing 80-90 parts of commercially available gasoline and 10-20 parts of 255 benzyl silicone oil by mass, soaking the mica part treated by S5 in the mixture, fishing out, draining, naturally drying at normal temperature, and baking in an oven at 60-80 ℃ to obtain the final mica part. After moisture-proof treatment, the performance of the mica part is not affected when the relative humidity is more than 90 percent in the processes of storage and transportation.
Furthermore, the mica powder adopted by the ingredients of the invention has the granularity range of-20 meshes to-120 meshes, and three or more mica powders with different meshes are mixed, and the preferred granularity is as follows: 20 portions of 20 meshes, 40 portions of 80 meshes and 30 portions of 120 meshes, wherein the mica powder with different granularities fully fills the gaps between the mica powder and the mica powder when the mica powder is bonded by mass, and the density of the mica parts is increased.
Furthermore, when the working temperature of the mica part to be manufactured is 500 ℃, natural white mica powder is adopted, and when the working temperature of the mica part to be manufactured is 1000 ℃, artificially synthesized mica powder is adopted.
Further, the size of the punch of the pressing in the S3 is smaller than that of the punch of the inner die by 0.1mm, and the surface of the punch of the pressing is plated with chrome.
Further, the inner die is made of polytetrafluoroethylene resin, and the outer die and the male die for pressing are both made of carbon steel.
Furthermore, a plurality of exhaust holes are uniformly formed in the contact surface between the male die of the inner die and the mica part to be manufactured.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic view of the female and male dies of the inner die of the present invention;
FIG. 3 is a schematic view of an outer mold of the present invention;
FIG. 4 is a graph of the temperature rise of the curing process of the present invention;
FIG. 5 is a temperature rise curve for the stress relieving treatment of the present invention;
FIG. 6 is a temperature rise curve of the moisture barrier treatment process of the present invention.
Detailed Description
The invention is further illustrated below with reference to the figures and examples.
The invention selects natural mica powder or artificially synthesized mica powder with different granularities to be mixed with short glass fiber, adopts inorganic water-soluble binder to bond, carries out compression molding on the blank at normal temperature, and finishes curing treatment by an intelligent tunnel dryer. Has the characteristics of low curing temperature, simple manufacturing process, low cost and no pollution.
Examples
As shown in fig. 1, the present embodiment is completed by the following technical route:
s1: preparing materials: selecting 20 parts of-20-mesh mica powder, 40 parts of-8-mesh mica powder and 30 parts of-120-mesh mica powder by weight, taking 10 parts of short glass fiber with the length of less than 10mm, and uniformly stirring all the ingredients; when the mica powder with different particle sizes is adopted for bonding, the gaps among the mica powder are fully filled, the density of the mica part is increased, and the mechanical strength, including toughness, bending resistance and impact resistance, of the mica part obtained by fully mixing the mica powder and the short glass fiber is remarkably improved. When the working temperature of the mica part is less than 500 ℃, natural mica powder is adopted, and when the working temperature of the mica part is 500-1000 ℃, artificially synthesized mica powder is adopted.
S2: preparing a water-soluble binder: taking 10 parts of ammonium dihydrogen phosphate, 9 parts of ammonium tetraborate and 81 parts of purified water with the water temperature of more than 50 ℃, and stirring uniformly and fully dissolving; the used inorganic binder is a pure water solution, and when the inorganic binder is volatilized, the inorganic binder does not generate harmful gas like organic solvents such as toluene, xylene and formaldehyde, so that the health of operators is damaged, the environment is polluted, and the performance of the product is not influenced by water quality difference;
s3: manufacturing a mould: as shown in fig. 2 and 3, polytetrafluoroethylene resin is used as a raw material to prepare an inner mold, a cavity of the inner mold is used for injection molding of a female mold 1 and a male mold 2 according to the geometric shape and size of a mica part 3, a 50cm frame is reserved around the mold cavity, through holes with the diameter of 13mm are drilled at four corners of the formed frame, and a plurality of vent holes with the diameter of 1mm are uniformly distributed on the contact surface of the male mold 2 and a product; the common carbon steel is used for manufacturing an external mold, the upper and lower through holes of the external mold are formed, the inner cavity of the external mold is in movable fit with the external dimension of the internal mold, a male mold for pressing with the dimension of 0.1mm smaller than that of the male mold 2 of the internal mold is made of the common carbon steel, and the surface is plated with chrome for 0.1 mm; the inner mold is injection molded by polytetrafluoroethylene resin, is easy to copy and suitable for batch production, and simultaneously meets the requirement of mica parts on curing temperature, the outer mold is made of common carbon structural steel, the mold has a simple structure, the cost is reduced, the inner mold is protected in the pressing process, and the tensile strength of the inner mold is improved;
s4: forming: at normal temperatureThe unit area pressure is 200kg/cm2The above;
s4-1, mixing and stirring 85 parts of uniformly stirred ingredients and 15 parts of water-soluble adhesive to obtain a mixture;
s4-2, weighing the mixture according to the mass of the mica part to be manufactured, and adding 12% of water and 1% of loss during weighing; the specific gravity of the mica part of the present example is 2.38 to 2.4g/cm3；
S4-3, fixing an outer die made of common carbon steel on a workbench of a press machine, placing a female die of the inner die in a cavity of the outer die, placing a male die for pressing in the female die, closing the press machine, fixing the male die for pressing on the upper cross of the press machine, and starting the press machine; the press machine is a 500-ton four-column universal press machine;
s4-4, pouring the weighed mixture into a concave die core cavity of an inner die made of polytetrafluoroethylene resin as a raw material;
s4-5, starting a press machine, repeatedly pressing for 4-5 times, wherein the interval between every two times is 1 minute, and the pressure intensity is 200kg/cm2After keeping for 10 minutes, starting the press machine, starting the reverse ejection device, and taking out the female die of the inner die;
s5: curing treatment:
the female die of the inner die taken out from S5-1 and S4-5 is folded with the male die of the inner die, and the four corners of the female die are locked by 12mm bolts;
s5-2, placing the mica parts locked in the inner mold into a tunnel dryer for drying, heating, curing and annealing line production, wherein the drying time and temperature are strictly operated according to the specification of the fourth drawing; the time and the temperature of the curing tunnel dryer are intelligently controlled at one time, and continuous flow production can be realized; the heat insulation asbestos cloth is arranged between different temperature zones in the dryer, so that hot air channeling can be prevented. The curing temperature is less than 250 ℃, the crystal and the physical and chemical properties of the natural mica are kept intact, the binder is an inorganic binder, and the long-term working temperature can reach 500 ℃ and 1000 ℃.
S6: and (3) internal stress relief treatment:
s6-1: taking out the completely cured mica part, and putting the mica part into an oven, wherein the temperature of the oven is kept at 50-60 ℃;
s6-2: after reaching a certain batch, carrying out internal stress elimination treatment according to the requirement of the fifth graph; the mica part treated by eliminating the internal stress can not deform when the environmental temperature is more than-600 ℃ or more than 800 ℃ in the processes of storage and transportation.
S7: moisture-proof treatment:
s7-1: 80-90 parts of 95# gasoline and 10-20 parts of 255 benzyl silicone oil are mixed into a solution, and the mica part subjected to internal stress relief treatment is soaked for 10 minutes;
s7-2: fishing out the soaked mica parts, draining, and naturally drying at normal temperature for 12-24 hours;
s7-3: placed in an oven and when the volume reaches two thirds of the oven volume, the treatment is carried out according to the requirements of figure 6. When the environmental humidity is more than 95 percent in the processes of storage, transportation and use, the various performances of the mica part per se are not reduced.
The oven for the internal stress relieving treatment and the moisture proof treatment of the present embodiment is a general oven that replaces an exhaust device.
The main properties of the mica parts manufactured according to the embodiment of the present invention are compared with those of the mica parts manufactured according to the prior art after being baked at 500 ℃ for 2 hours in table 1;
table 1: found after 2 hours of calcination at 500 DEG C
It can be seen from the data presented in table 1 that the mica parts according to the prior art have completely lost their main application properties only after a short period of 2 hours at 500 c, while the mica parts according to the invention still retain good insulation properties and good mechanical strength.
Claims (7)
1. A manufacturing method of special-shaped mica parts is characterized in that: the method comprises the following steps:
s1: preparing materials: selecting 85-95 parts by weight of three or more than three mica powders with different meshes, taking 10 parts by weight of short glass fibers with the length less than 10mm, and mixing and stirring the mica powders and the short glass fibers uniformly;
s2: preparing a water-soluble binder: according to the mass, 5-15 parts of ammonium dihydrogen phosphate, 4-14 parts of ammonium tetraborate and 76-86 parts of purified water with the water temperature of more than 50 ℃ are taken, stirred uniformly and dissolved fully;
s3: manufacturing a mould: the method comprises the steps of manufacturing an inner die, manufacturing an outer die and manufacturing a pressing male die, wherein a core cavity of the inner die is formed into a female die and a male die in an injection molding mode according to the shape and the size of a mica part to be manufactured, the outer die is provided with an inner cavity for placing the female die of the inner die, the inner cavity of the outer die is in movable fit with the external dimension of the inner die, and the size of the pressing male die is smaller than that of the male die of the inner;
s4: molding: weighing, stirring and mixing ingredients and a water-soluble binder to obtain a mixture, fixing an outer mold on a workbench of a press machine, placing a female mold of an inner mold in an inner cavity of the outer mold, placing a male mold for pressing into the female mold of the inner mold, closing the press machine, fixing the male mold for pressing on a transverse cross of the press machine, starting the press machine, pouring the mixture into a core cavity of the female mold of the inner mold, starting the press machine, repeatedly applying pressure, and then starting a reverse ejection device to take out the inner mold;
s5: curing treatment: and folding and locking the taken inner mold and the male mold of the inner mold, putting the inner mold and the male mold into a tunnel type dryer for drying, heating, curing and annealing, wherein the curing temperature is less than 250 ℃, and then taking out the mica part for baking and eliminating internal stress.
2. The method for manufacturing a shaped mica part as claimed in claim 1, wherein: the granularity range of the mica powder adopted by the ingredients is-20 to-120 meshes.
3. The method for manufacturing a shaped mica part as claimed in any one of claims 1 to 2, wherein: when the working temperature of the mica part to be manufactured is 500 ℃, natural white mica powder is adopted, and when the working temperature of the mica part to be manufactured is 1000 ℃, artificially synthesized mica powder is adopted.
4. The method for manufacturing a shaped mica part as claimed in claim 1, wherein: the size of the punch for pressing in the S3 is smaller than that of the punch of the inner die by 0.1mm, and the surface of the punch for pressing is plated with chrome.
5. The method for manufacturing a shaped mica part as claimed in claim 1, wherein: the inner die is made of polytetrafluoroethylene resin, and the outer die and the male die for pressing are both made of carbon steel.
6. The method for manufacturing a shaped mica part as claimed in claim 1, wherein: and a plurality of exhaust holes are uniformly formed on the contact surface of the male die of the inner die and the mica part to be manufactured.
7. The method for manufacturing a shaped mica part as claimed in claim 1, wherein: further comprising:
s6: moisture-proof treatment: mixing 80-90 parts of commercially available gasoline and 10-20 parts of 255 benzyl silicone oil by mass, soaking the mica part treated by S5 in the mixture, fishing out, draining, naturally drying at normal temperature, and baking in an oven at 60-80 ℃ to obtain the final mica part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215807.1A CN109333768B (en) | 2018-10-18 | 2018-10-18 | Method for manufacturing special-shaped mica part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215807.1A CN109333768B (en) | 2018-10-18 | 2018-10-18 | Method for manufacturing special-shaped mica part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109333768A CN109333768A (en) | 2019-02-15 |
| CN109333768B true CN109333768B (en) | 2020-11-10 |
Family
ID=65310226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811215807.1A Active CN109333768B (en) | 2018-10-18 | 2018-10-18 | Method for manufacturing special-shaped mica part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109333768B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875412B (en) * | 2020-06-15 | 2022-02-11 | 嘉兴市荔禾实业有限公司 | Conical mica tube and processing technology thereof |
| CN111976037A (en) * | 2020-06-30 | 2020-11-24 | 湖北平安电工股份有限公司 | Method for producing mica special-shaped piece |
| CN114013153A (en) * | 2021-02-18 | 2022-02-08 | 湖北平安电工科技股份公司 | A kind of mica special-shaped part molding process containing organic silica gel adhesive |
| CN114274597A (en) * | 2021-02-18 | 2022-04-05 | 湖北平安电工科技股份公司 | Mica special-shaped piece for lithium battery assembly and processing method |
| CN114312604B (en) * | 2022-03-11 | 2022-06-17 | 浙江荣泰电工器材股份有限公司 | Upper cover thermal runaway protection mica structural member for new energy automobile and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68927185T2 (en) * | 1988-06-01 | 1997-03-06 | Ngk Insulators Ltd | Molding process and device for manufacturing ceramic objects |
| CN101082196B (en) * | 2006-06-01 | 2011-08-31 | 徐鲁夫 | Pressure injection forming method for paper standardized product |
| CN101845606B (en) * | 2010-06-22 | 2011-12-28 | 哈尔滨工业大学 | Method fur forming aluminum base composite material thin wall part by current self-resistance heating |
| CN102514200A (en) * | 2011-12-15 | 2012-06-27 | 昆明理工大学 | Hot extrusion and cold compression forming method of plastic inspection well |
| CN104250067B (en) * | 2013-06-28 | 2018-04-13 | 中国地质大学（北京） | A kind of method for preparing machinability mica glass-ceramics insulating materials using cullet and phlogopite |
| CN207585992U (en) * | 2017-12-05 | 2018-07-06 | 内蒙古航天红岗机械有限公司 | A kind of chopped strand sample prepares mold |
-
2018
- 2018-10-18 CN CN201811215807.1A patent/CN109333768B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109333768A (en) | 2019-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109333768B (en) | Method for manufacturing special-shaped mica part | |
| CN104177110B (en) | The preparation method of corrugated configuration ceramic matric composite flat board | |
| EP2871172A1 (en) | Metamaterial and manufacturing method threfor | |
| CN114379115B (en) | Carbon-carbon crucible support and preparation method thereof | |
| CN107188590B (en) | Forming method of fiber reinforced SiC-based composite material | |
| CN110272294B (en) | Method for quickly forming special-shaped quartz composite ceramic wave-transparent antenna window | |
| CN105712729A (en) | Preparation method for crucible cover plate for polycrystalline ingot furnace | |
| CN103482980A (en) | C/SiC composite material and preparation method of same | |
| CN108016054A (en) | Carbon fibre composite is molded membranous disc manufacturing process | |
| CN104124005A (en) | Semi-conductive layer processing technique for solid insulation switches | |
| CN102371684A (en) | Preparation method for composite cable holder | |
| CN110494030B (en) | Preparation method of resin-reinforced ferrite solid waste based broadband electromagnetic wave absorber | |
| Zhifeng et al. | Effects of laser energy density on forming accuracy and tensile strength of selective laser sintering resin coated sands. | |
| KR101536670B1 (en) | radome for antenna and manufacturing method thereof | |
| EP0064985A1 (en) | Methods and apparatus for producing foamed thermoplastics material and articles | |
| CN111660545A (en) | Conical shell fiber winding forming tool and equal-thickness winding forming method thereof | |
| CN117477220A (en) | PMI composite foam sandwich structure radome and preparation method thereof | |
| CN110768482A (en) | Motor iron core bonding type manufacturing method | |
| CN114479756B (en) | Sizing agent for mica plate and preparation method and application thereof | |
| CN110552129A (en) | High-density quartz/quartz composite material and preparation method thereof | |
| CN112647343B (en) | Preparation method of carbon fiber paper for fuel cell | |
| EP3615317B1 (en) | Mobile membrane press | |
| CN116496084B (en) | Repairable graphite mold blank, forming mold, repairing agent and repairing method | |
| CN111113953A (en) | Forming die group of composite material structure | |
| CN205718675U (en) | The particular manufacturing craft of the overall shellproof sheet material of the many curved surfaces of disposal molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |