CN105063325B - A kind of bands for band Technology for Heating Processing - Google Patents
A kind of bands for band Technology for Heating Processing Download PDFInfo
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- CN105063325B CN105063325B CN201510570753.0A CN201510570753A CN105063325B CN 105063325 B CN105063325 B CN 105063325B CN 201510570753 A CN201510570753 A CN 201510570753A CN 105063325 B CN105063325 B CN 105063325B
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- 238000012545 processing Methods 0.000 title claims abstract description 50
- 238000005516 engineering process Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 title claims abstract description 40
- 150000003839 salts Chemical class 0.000 claims abstract description 71
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 230000001590 oxidative effect Effects 0.000 claims abstract description 43
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005121 nitriding Methods 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 23
- 238000011282 treatment Methods 0.000 claims abstract description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 17
- 239000011780 sodium chloride Substances 0.000 claims abstract description 17
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 7
- 229910000639 Spring steel Inorganic materials 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 229940056319 ferrosoferric oxide Drugs 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical group [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 15
- 238000009792 diffusion process Methods 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 5
- 150000001721 carbon Chemical group 0.000 description 4
- -1 cyanate radical Chemical class 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910000727 Fe4N Inorganic materials 0.000 description 1
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Chemical Treatment Of Metals (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a kind of bands for band Technology for Heating Processing, comprise the following steps：A, preheat：Bands for band is preheated, eliminates the moisture on bands for band surface, temperature is between 350 400 DEG C and including end value, and the time is between 20 40min and including end value；B, salt-bath nitriding：Salt bath nitriding treatment is carried out to bands for band surface using QPQ nitridation salts, so that the active nitrogen in QPQ nitridation salts is penetrated into inside the metal lattice of bands for band, temperature is between 520 580 DEG C and including end value, and the salt-bath nitriding time is between 10 180min and including end value；C, liquid oxidizing：Liquid oxidizing processing is carried out to bands for band using QPQ saline oxides, bands for band surface cyanogen root is decomposed and forms oxide-film on bands for band surface, temperature is between 370 400 DEG C and including end value, and the time is between 15 20min and including end value.Technical scheme can strengthen the hardness of bands for band and the corrosion resistance of bands for band.
Description
Technical field
The present invention relates to bands for band processing technology field, more specifically, is related to a kind of bands for band Technology for Heating Processing.
Background technology
Bands for band is to be stretched in the band saw blades formed in a framework by a saw blade that is tough and tensile, sharping teeth, can be cut
The larger material of the hardness such as metal.Because bands for band needs the larger material of cutting hardness, bands for band inherently needs very big
Hardness, therefore in order to ensure the hardness of bands for band, it is necessary to be heat-treated to bands for band.
In the prior art, conventional bands for band Technology for Heating Processing, quenching-tempering twice technique is often only included, above-mentioned
Without other heat treatment steps after technique, the bands for band after above-mentioned steps are handled, its hardness is only capable of reaching
900HV0.2 (HV is Vickers hardness, and 900 be Vickers hardness number, and 0.2 is to measure load value used, unit kilogram), causes
Bands for band is difficult to the harder material of sawing, have impact on the performance of bands for band.
In summary, how to improve the hardness of bands for band turns into current those skilled in the art technology urgently to be resolved hurrily
Problem.
The content of the invention
It is an object of the invention to provide a kind of technical scheme of bands for band Technology for Heating Processing, to solve to be situated between in background technology
The bands for band hardness of the bands for band Technology for Heating Processing processing conventional in the prior art to continue is inadequate, it is difficult to the larger material of sawing hardness
The problem of material.
In order to solve the above-mentioned technical problem, the present invention provides following technical scheme：
The invention provides a kind of bands for band Technology for Heating Processing, comprise the following steps：
A, preheat：The pre-heat treatment is carried out to bands for band, eliminates the moisture on bands for band surface, wherein, preheating temperature is in 350-
Between 400 DEG C (DEG C for degree Celsius) and including end value, preheating time is between 20-40min (min is minute) and including end value；
B, salt-bath nitriding：Using QPQ (Quench-Polish-Quench, quenching-polishing-quenching) nitridation salt to the band
Saw blade surface carries out salt bath nitriding treatment, so that the active nitrogen of the QPQ nitridation salts is penetrated into the metal lattice of the bands for band
Portion, wherein, the temperature of the salt bath nitriding treatment is between 520-580 DEG C and including end value, and the salt-bath nitriding time is in 10-
Between 180min and including end value；
C, liquid oxidizing：Liquid oxidizing processing is carried out to the bands for band using QPQ saline oxides, decomposes the bands for band table
Face cyanogen root simultaneously forms oxide-film on the bands for band surface, wherein, the temperature of the liquid oxidizing processing is between 370-400 DEG C
And including end value, the liquid oxidizing time is between 15-20min and including end value.
Preferably, after the liquid oxidizing step, in addition to step：D, desalt cleaning：The band is rinsed with water to saw
Bar surface 10-20min and including end value, to remove the QPQ saline oxides of the bands for band surface remaining.
Preferably, after the cleaning step that desalts, in addition to step：E, dry：The bands for band is dried,
The bands for band remained on surface moisture is removed, drying temperature is between 120-150 DEG C and including end value, and drying time is in 20-
Between 50min and including end value.
Preferably, after the baking step, in addition to step：F, oiling：Uniformly smeared on the bands for band surface
Antirust oil, so that the bands for band surface forms Rust Preventing Oil Film.
Preferably, in the preheating step, the pre-heat treatment is carried out to the bands for band using well formula resistance furnace.
Preferably, in the salt-bath nitriding step, cyanogen root content is between 35%-40% and including end value in salt bath.
Preferably, in the liquid oxidizing step, the oxide-film that the bands for band surface is formed is ferroso-ferric oxide oxygen
Change film.
Preferably, the main component of the QPQ nitridation salts including the use of organic matter and inorganic raw material be formulated by
The nitridation salt of high cyanate radical and carbonate composition, the main component of the QPQ saline oxides include oxygen containing nitrite and/or hydrogen
Sodium oxide molybdena；In the step of liquid oxidizing, if salt bath is rubescent, increase QPQ saline oxides into the salt bath, until salt bath is red
Disappear.
Preferably, the bands for band is bi-metal bandsaw blades, and the composition of the serrated portion of the bi-metal bandsaw blades includes
High-speed steel, the composition of the saw body part of the bi-metal bandsaw blades include spring steel.
Preferably, if the bands for band is the bimetallic strip that serrated portion includes spring steel including high-speed steel and saw body part
Saw blade, then the temperature of the salt bath nitriding treatment of the bi-metal bandsaw blades is between 540-550 DEG C and including end value, salt bath
Nitridation time is between 30-40min and including end value；The liquid oxidizing temperature of the bi-metal bandsaw blades 380-400 DEG C it
Between and including end value, the liquid oxidizing time is between 15-20min and including end value.
It can be drawn by the above-mentioned course of work, bands for band Technology for Heating Processing provided by the invention, by 520-580 DEG C
Salt bath in carry out nitrogen treatment, enable to activated nitrogen atom in QPQ nitridation salts constantly to bands for band diffusion into the surface, penetrate into
To inside the metal lattice of bands for band, and finally form compound layer and diffusion layer on bands for band surface, it is possible to increase saw blade table
Wearability, corrosion resistance and the fatigue durability in face, so as to enhance the hardness of bands for band, then pass through the salt bath at 370-400 DEG C
In oxidation processes, the oxide-film of black is formed on bands for band surface, by increasing capacitance it is possible to increase the corrosion resistance on bands for band surface, strengthen simultaneously
The rustless property of bands for band and the hardness of bands for band.To sum up, by being carried out to bands for band at salt-bath nitriding and liquid oxidizing
Reason, can strengthen the hardness of bands for band, by test measurement, the hardness of the bands for band by above-mentioned processing procedure can reach
1300HV0.2 or so, relative to the bands for band Technology for Heating Processing of routine, present treatment technique can strengthen the hardness and band of bands for band
The corrosion resistance of saw blade.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, for those of ordinary skills, do not paying creative work
Property on the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the first bands for band Technology for Heating Processing shown in an exemplary embodiment of the invention；
Fig. 2 is the schematic flow sheet of second of bands for band Technology for Heating Processing shown in an exemplary embodiment of the invention.
Embodiment
Bands for band Technology for Heating Processing provided in an embodiment of the present invention, is solved described in background technology in the prior art
The problem of bands for band hardness of conventional bands for band Technology for Heating Processing production is relatively low.
In order that those skilled in the art more fully understand the technical scheme in the embodiment of the present invention, and make of the invention real
Apply the above-mentioned purpose of example, feature and advantage can be more obvious understandable, below in conjunction with the accompanying drawings to the technology in the embodiment of the present invention
Scheme is described in further detail.
Accompanying drawing 1 is refer to, Fig. 1 is the stream of the first bands for band Technology for Heating Processing shown in an exemplary embodiment of the invention
Journey schematic diagram.Bands for band Technology for Heating Processing provided in an embodiment of the present invention comprises the following steps：
A, preheat：The pre-heat treatment is carried out to bands for band, eliminates the moisture on bands for band surface, wherein, preheating temperature is in 350-
Between 400 DEG C and including end value, preheating time is between 20-40min and including end value.
The purpose of preheating is to eliminate bands for band surface contained humidity, prevents follow-up salt-bath nitriding and liquid oxidizing
Sputtering is produced in technique, while bands for band temperature can be improved, preparation is made for follow-up salt-bath nitriding step, prevents colder
Salt temperature declines too much after bands for band enters stove, so as to reduce the processing time of salt-bath nitriding, meanwhile, by being carried out to bands for band
Preheating, it can also reduce the deformation of bands for band workpiece and make it that bands for band color and luster is homogeneous, it is more attractive in appearance.
The present embodiment maintains 20-40min time by preheating 350-400 DEG C to bands for band surface, being capable of retainer belt
Saw blade surface temperature, bands for band surface moisture is removed as much as possible, and can reduce the deformation of bands for band, improve the light of bands for band
Pool.
In the preheating step of the bands for band of the present embodiment, the bands for band is carried out at preheating using well formula resistance furnace
Reason, because well formula resistance furnace furnace temperature is uniform, good heat insulating, while the energy is saved, and it is pollution-free, environmental benefit is good, so as to
Enable to the preheating temperature at each position of bands for band more homogeneous.
B, salt-bath nitriding：Nitrogen treatment is carried out to the bands for band surface using QPQ nitridation salts, so that the QPQ is nitrogenized
Active nitrogen in salt is penetrated into inside the metal lattice of the bands for band, wherein, the temperature of the salt bath nitriding treatment is in 520-580
Between DEG C and including end value, the salt-bath nitriding time is between 10-180min and including end value.
QPQ nitridation salts include cyanogen root, such as high cyanate radical, contain nitrogen in cyanogen root, the purpose of salt-bath nitriding be in order that
Cyanogen root in QPQ nitridation salts is decomposed so that from cyanogen root decompose caused by active nitrogen constantly to bands for band diffusion into the surface, ooze
Thoroughly, penetrate into inside the metal lattice of bands for band, finally in the very high compound of bands for band surface formation wearability and corrosion stability
Layer and fatigue proof diffusion layer, so as to improve the wearability on bands for band surface, corrosion resistance and fatigue durability.
By carrying out nitrogen treatment to bands for band in 520-580 DEG C of high-temperature molten salt bath, and 10-180min is maintained,
The activity of active nitrogen can be improved so that the active nitrogen in QPQ nitridation salts largely, rapidly infiltrates through the metal lattice of bands for band
It is interior, so as to form the compound layer and diffusion layer of high-compactness on bands for band surface, and then improve the wear-resisting of bands for band surface
Property and fatigue durability.
Specifically, after bands for band immerses nitridation salt bath, cyanogen root in QPQ nitridation salts decompose caused by nitrogen, carbon atom can be
Bands for band surface forms high nitrogen gesture and carbon potential.Because nitrogen-atoms radius is only the half of iron atom radius, and the half of carbon atom
Footpath is smaller, so nitrogen, carbon atom can be diffused in the dot matrix gap of iron atom, therefore can be deep into the gold of bands for band
Belong in lattice.
The high concentration N on bands for band surface, carbon atom are to bands for band diffusion inside, the solid solution being initially formed in α-Fe.With
The raising of surface atom concentration, gradually forms γ ' (Fe4N) compound and ε (Fe2N3) compound.Finally by bands for band surface
The concentration gradient of nitrogen, carbon is centrally formed to bands for band.Diffusion layer organization is compound layer ε phases, ε phase+γ ' phases, γ ' phases, compound
It is solid solution of the nitrogen in α-Fe that layer is following, forms diffusion layer.
Therefore, the workpiece diffusion layer organization outer layer after QPQ salt bath nitriding treatments is compound layer；Internal layer is diffusion layer.Wherein
Mostly important with compound layer, it is mainly formed as di-iron trioxide, and it is the Reliable guarantee for improving wearability, while its is anti-
Corrosion is also fine.The main function of oxide-film is that fabulous resist layer is formed together with compound.It is in porous state simultaneously,
Friction can be reduced with oil storage, it is favourable to improving wearability, while the also effect of aesthetic appeal.Diffusion layer main function is to carry
The fatigue strength of high workpiece, also play the role of to the bulk strength and elasticity for increasing thin thin pieces very big.
In this step, salt bath nitriding treatment is carried out to bands for band using nitriding furnace in liquid oxidizing processing procedure.
Wherein, during the salt-bath nitriding, between the cyanogen root content of salt bath maintains 35%-40%, in the process
Need to be properly added QPQ nitridation salts into salt bath, so as to ensure the content of active nitrogen in salt bath, and then ensure oozing for nitrogen treatment
Enter speed.After salt bath nitriding treatment work is completed to bands for band, following steps are entered：
C, liquid oxidizing：Liquid oxidizing processing is carried out to the bands for band using QPQ saline oxides, decomposes the bands for band table
Face cyanogen root simultaneously forms oxide-film on the bands for band surface, wherein, the temperature of the liquid oxidizing processing is between 370-400 DEG C
And including end value, the liquid oxidizing time is between 15-20min and including end value.
The purpose of liquid oxidizing is the nitridation salt taken out of using QPQ saline oxides decomposition bands for band from nitriding furnace, so that
Obtain cyanogen root thoroughly to decompose, reach the purpose of environmental protection.Simultaneously the oxygen of black can be formed during liquid oxidizing on bands for band surface
Change film, the composition of the oxide-film is ferroso-ferric oxide, and ferroso-ferric oxide has higher antiseptic power, by increasing capacitance it is possible to increase bands for band
The corrosion resistance on surface, and improve the aesthetic property on bands for band surface.
QPQ saline oxides are rich in oxygen element, can be chemically reacted with the nitrogen in QPQ nitridation salts, so as to decompose cyanogen
Root, reach removal cyanogen root, realize the purpose of environmental protection.By during liquid oxidizing, maintaining the temperature of salt bath in 370-400
DEG C, and the liquid oxidizing time is maintained between 15-20min, the decomposition rate of cyanogen root can be accelerated, and passage time controls and caused
Cyanogen root complete decomposition, while make it that oxygen element is reacted with the ferro element in bands for band, form black on bands for band surface
Ferroso-ferric oxide oxide-film, improve the corrosion resistance on bands for band surface.
In the Technology for Heating Processing of bands for band, the main component for the QPQ nitridation salts that salt-bath nitriding step uses includes：Use
The nitridation salt being made up of high cyanate radical and carbonate that organic matter is formulated with inorganic raw material.
The nitridation being made up of high cyanate radical and carbonate that QPQ nitridation salts are formulated using organic matter and inorganic raw material
Salt, there is the nitridation salt of more highly toxic cyanide more environmentally friendly compared to traditional being rich in.
The main component of the QPQ saline oxides used in liquid oxidizing step includes oxygen containing nitrite and/or hydroxide
Sodium；In the step of liquid oxidizing, if salt bath is rubescent, increase QPQ saline oxides into the salt bath, until salt bath red disappears
Lose.
Brownish red, such as nitrogen dioxide is often presented containing nitrogen compound, in liquid oxidizing step, if salt bath color is sent out
It is red, illustrate that the nitridation salt in salt bath does not have and decompose completely or be not fully neutralized the material for needs, therefore by salt bath
During rubicundity, appropriate QPQ saline oxides are added into salt bath, so as to neutralize the nitridation salt in salt bath, prevent that nitridation salt is excessive,
Beneficial to environmental protection.
To sum up, the bands for band Technology for Heating Processing in the present embodiment, bands for band is preheated, salt-bath nitriding, liquid oxidizing
Etc. PROCESS FOR TREATMENT, first pass through and nitrogen treatment is carried out in 520-580 DEG C of salt bath, enable to the active nitrogen in QPQ nitridation salts
Atom constantly to bands for band diffusion into the surface, penetrate into inside the metal lattice of bands for band, and finally in bands for band surface formationization
Compound layer and diffusion layer, wearability, corrosion resistance and the fatigue durability on saw blade surface are improved, so as to enhance the hardness of bands for band,
Then in 370-400 DEG C of liquid oxidizing processing so that bands for band surface forms the oxide-film of black, by increasing capacitance it is possible to increase bands for band
The corrosion resistance on surface, also enhance the rustless property of bands for band and the hardness of bands for band.To sum up, by being carried out to bands for band
Salt-bath nitriding and liquid oxidizing processing, the hardness of bands for band can be strengthened, by test measurement, by the band of above-mentioned processing procedure
The hardness of saw blade can reach 1300HV0.2 or so, and relative to the bands for band Technology for Heating Processing of routine, present treatment technique can increase
The strong hardness of bands for band and the corrosion resistance of bands for band.
In the bands for band Technology for Heating Processing shown in Fig. 1, before preheating step is carried out, it is also necessary to carry out quenching Step and
In tempering step, wherein quenching Step, hardening heat is controlled at 1200 DEG C, and the cool time maintains 50s (second)；Tempering step
In, temperature control is between 520-560 DEG C and including end value, it is necessary to by 3 tempers, and tempering time is tieed up every time
Hold at 2 hours, reach 900HV0.2 or so so as to improve the hardness of bands for band in advance.
Fig. 2 is refer to, Fig. 2 is the flow of second of bands for band Technology for Heating Processing shown in an exemplary embodiment of the invention
Schematic diagram, as shown in Fig. 2 as a kind of preferred embodiment, in addition to the bands for band Technology for Heating Processing shown in Fig. 1, in Fig. 1 institutes
After the liquid oxidizing step shown, bands for band Technology for Heating Processing also includes step：D, desalt cleaning：The bands for band is rinsed with water
Surface 10-20min and including end value, to remove the QPQ saline oxides of bands for band surface remaining.
During liquid oxidizing, the QPQ saline oxides of the easy attachment portion remaining in bands for band surface, by using water flushed zone
Saw blade surface 10-20min, the QPQ saline oxides of bands for band surface remaining can be got rid of.
As shown in Fig. 2 after the cleaning step that desalts, in addition to step：E, dry：By being dried to bands for band,
Residual moisture on bands for band is removed, drying temperature is between 120-150 DEG C and including end value, and drying time is between 20-50min
And including end value.
By drying bands for band, bands for band remained on surface moisture can be removed, so as to further prevent bands for band from getting rusty, is led to
Cross between bands for band drying temperature is maintained into 120-150 DEG C, and maintain 20-50min, can fully evaporate bands for band surface
Moisture, preventing the moisture of remaining causes bands for band to get rusty.
As shown in Fig. 2 in bands for band Technology for Heating Processing, after a bakeout step, in addition to step：F, oiling：Sawed in band
Antirust oil is uniformly smeared on bar surface, so that the bands for band surface forms Rust Preventing Oil Film.
By uniformly smearing antirust oil on bands for band surface, Rust Preventing Oil Film can be formed on bands for band surface, so as to improve
The corrosion resistance of bands for band, and by forming Rust Preventing Oil Film on bands for band surface, can further in coding processing etc. in technique,
Improve the corrosion resistance of bands for band.
In bands for band Technology for Heating Processing in the various embodiments described above, bands for band is bi-metal bandsaw blades, the bimetal bandsaw
The composition of the serrated portion of bar includes high-speed steel, and the composition of the saw body part of the bi-metal bandsaw blades includes spring steel.
Bi-metal bandsaw blades serrated portion includes high-speed steel, and saw body part includes spring steel, can be with substantially any type
Band sawing machine support the use, suitable for including types such as structural steel, steel alloy, bearing steel, stainless steel, mould steel, heat resisting steel
Web for sawing metal.
When the bands for band mentioned in above-described embodiment is that serrated portion includes high-speed steel and saw body part includes spring steel
Bi-metal bandsaw blades, then between the salt-bath nitriding temperature of the bi-metal bandsaw blades maintains 540-550 DEG C and including end value, salt bath
Nitridation time is maintained between 30-40min and including end value.By the way that the salt temperature of bi-metal bandsaw blades is maintained into 540-
Between 550 DEG C, and the salt-bath nitriding time is maintained between 30-40min, it is possible to increase the activity of the nitrogen in salt bath, make
Active nitrogen in QPQ nitridation salts is a large amount of, quickly infiltrates into the metal lattice of bands for band, so as to rapidly in bands for band table
Face forms the compound layer and diffusion layer of high-compactness, and then improves the wearability and fatigue durability on bands for band surface.
And between the liquid oxidizing temperature of bi-metal bandsaw blades maintains 380-400 DEG C and including end value, liquid oxidizing
Time is maintained between 15-20min and including end value.
Between the liquid oxidizing temperature of bi-metal bandsaw blades is maintained into 380-400 DEG C, the liquid oxidizing time maintains 15-
Between 20min, the decomposition rate of cyanogen root can be accelerated, and cause cyanogen root complete decomposition within the time, so that oxygen element
With the ferro element fast reaction in bands for band, the oxidation of the ferroso-ferric oxide of the high-compactness of black is formed on bands for band surface
Film, further increase the corrosion resistance on bands for band surface.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiments.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the scope of the protection.
Claims (9)
1. a kind of bands for band Technology for Heating Processing, it is characterised in that comprise the following steps：
A, preheat：The pre-heat treatment is carried out to bands for band, eliminates the moisture on bands for band surface, wherein, preheating temperature is at 350-400 DEG C
Between and including 350 DEG C of end value, not including 400 DEG C of end value, preheating time is between 20-40min and including end value；
B, salt-bath nitriding：Salt bath nitriding treatment is carried out to the bands for band surface using QPQ nitridation salts, so that the QPQ is nitrogenized
The active nitrogen of salt is penetrated into inside the metal lattice of the bands for band, wherein, the temperature of the salt bath nitriding treatment is at 520-580 DEG C
Between and including end value, the salt-bath nitriding time is between 10-180min and including end value；
C, liquid oxidizing：Liquid oxidizing processing is carried out to the bands for band using QPQ saline oxides, decomposes bands for band surface cyanogen
Root simultaneously forms oxide-film on the bands for band surface, wherein, the temperature of the liquid oxidizing processing between 370-400 DEG C and is wrapped
Include end value, the liquid oxidizing time between 15-20min and including end value 15min, not including end value 20min；
Wherein, the bands for band is bi-metal bandsaw blades, and the composition of the serrated portion of the bi-metal bandsaw blades includes high-speed steel,
The composition of the saw body part of the bi-metal bandsaw blades includes spring steel.
2. bands for band Technology for Heating Processing according to claim 1, it is characterised in that after the liquid oxidizing step,
Also include step：
D, desalt cleaning：The bands for band surface 10-20min is rinsed with water and including end value, to remove the bands for band surface
The QPQ saline oxides of remaining.
3. bands for band Technology for Heating Processing according to claim 2, it is characterised in that after the cleaning step that desalts,
Also include step：
E, dry：The bands for band is dried, removes the bands for band remained on surface moisture, drying temperature is in 120-150
Between DEG C and including end value, drying time is between 20-50min and including end value.
4. bands for band Technology for Heating Processing according to claim 3, it is characterised in that after the baking step, also wrap
Include step：
F, oiling：Antirust oil is uniformly smeared on the bands for band surface, so that the bands for band surface forms Rust Preventing Oil Film.
5. bands for band Technology for Heating Processing according to claim 1, it is characterised in that in the preheating step, use well formula
Resistance furnace carries out the pre-heat treatment to the bands for band.
6. bands for band Technology for Heating Processing according to claim 1, it is characterised in that in the salt-bath nitriding step, salt
The cyanogen root content of bath is between 35%-40% and including end value.
7. bands for band Technology for Heating Processing according to claim 1, it is characterised in that in the liquid oxidizing step, institute
The oxide-film for stating the formation of bands for band surface is ferroso-ferric oxide oxide-film.
8. bands for band Technology for Heating Processing according to claim 1, it is characterised in that the main component of the QPQ nitridation salts
The nitridation salt being made up of high cyanate radical and carbonate being formulated including the use of organic matter and inorganic raw material, the QPQ oxygen
The main component of salt dissolving includes oxygen containing nitrite and/or sodium hydroxide；In the step of liquid oxidizing, if salt bath is sent out
It is red, then increase QPQ saline oxides into the salt bath, disappeared until salt bath is red.
9. bands for band Technology for Heating Processing according to claim 1, it is characterised in that if the bands for band is serrated portion bag
Include high-speed steel and saw body part includes the bi-metal bandsaw blades of spring steel, then at the salt-bath nitriding of the bi-metal bandsaw blades
The temperature of reason is between 540-550 DEG C and including end value, and the salt-bath nitriding time is between 30-40min and including end value；It is described double
The liquid oxidizing temperature of band saw for metal is between 380-400 DEG C and including end value, and the liquid oxidizing time is between 15-20min
And including end value.
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| CN105297125A (en) * | 2015-12-02 | 2016-02-03 | 成都锦汇科技有限公司 | QPQ treatment process applicable to piston ring |
| CN105568212B (en) * | 2015-12-17 | 2017-11-10 | 常州大学 | It is a kind of that the method for improving salt bath nitriding efficiency is pre-oxidized by salt bath |
| CN106213700B (en) * | 2016-08-31 | 2019-02-01 | 福建晋江浔兴拉链科技有限公司 | A kind of production technology of punching press pull head |
| CN106425350A (en) * | 2016-12-23 | 2017-02-22 | 诺鑫（南通）医疗技术有限公司 | Preparation method of medical power reciprocating saw blade |
| CN110004284A (en) * | 2018-01-05 | 2019-07-12 | 成都成量工具集团有限公司 | A kind of tool checks the manufacturing method of dedicated file |
| CN110004403B (en) * | 2019-04-23 | 2020-10-09 | 永济市汇越新材料工程技术有限公司 | Modification industrialization method for rare earth modified multi-component composite salt bath ion infiltration treatment workpiece |
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| CN101580926A (en) * | 2009-07-06 | 2009-11-18 | 青岛张氏机械有限公司 | Salt-bath heat treatment technology of piston rod |
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| CN85103910A (en) * | 1985-05-03 | 1986-10-29 | 国营云马机械厂 | The no cyanogen heat-treating methods of hand saw blade |
| CN1073485A (en) * | 1992-07-03 | 1993-06-23 | 重庆长江变速器厂 | Heat treatment process for bimetal saw blade |
| JP2005330565A (en) * | 2004-05-21 | 2005-12-02 | Nippon Parkerizing Co Ltd | Method for surface hardening of maraging steel |
| CN101144148A (en) * | 2007-11-08 | 2008-03-19 | 孙国飞 | Salt bath nitriding heat treatment method for metal surface |
| CN100591944C (en) * | 2008-11-24 | 2010-02-24 | 南阳淅减汽车减振器有限公司 | Production technology of damper piston rod of automobile |
| CN102162081A (en) * | 2011-05-27 | 2011-08-24 | 大连滨城活塞制造有限公司 | Cylinder sleeve salt bath nitridation process |
| CN102747316B (en) * | 2012-07-30 | 2014-06-18 | 鹰普航空零部件（无锡）有限公司 | Salt bath nitriding pre-treatment and gas nitriding complex heat treatment process of anti-corrosion stainless steel parts |
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| CN101580926A (en) * | 2009-07-06 | 2009-11-18 | 青岛张氏机械有限公司 | Salt-bath heat treatment technology of piston rod |
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