CN114015974A - Energy-saving TD (time division) process based on vanadium carbide coating - Google Patents
Energy-saving TD (time division) process based on vanadium carbide coating Download PDFInfo
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- CN114015974A CN114015974A CN202111229669.4A CN202111229669A CN114015974A CN 114015974 A CN114015974 A CN 114015974A CN 202111229669 A CN202111229669 A CN 202111229669A CN 114015974 A CN114015974 A CN 114015974A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 25
- 238000000576 coating method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 25
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 150000003839 salts Chemical class 0.000 claims abstract description 50
- 229910021538 borax Inorganic materials 0.000 claims abstract description 27
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 27
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 27
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 21
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims description 25
- 230000000171 quenching effect Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000002436 steel type Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 24
- 238000006243 chemical reaction Methods 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
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- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
- C23C10/24—Salt bath containing the element to be diffused
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/02—Pretreatment of the material to be coated
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/60—After-treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses an energy-saving TD process based on a vanadium carbide coating, which comprises the following steps: s1, salt preparation: according to the size of a crucible, a certain amount of borax is taken, firstly, the borax is melted, then, the proportioned metal oxide is added into the crucible, after the proportioned metal oxide is all blended into the borax, a certain amount of reducing agent is added into the crucible, and then, the mixture is stirred by a stirring rod. According to the invention, the workpiece is placed in the preheating furnace, the preheating furnace is used for preheating the workpiece, and the preheated workpiece is placed in the crucible and is contacted with the product salt, so that the product salt can be conveniently and fully contacted with the workpiece, the wear resistance and the adhesion resistance are further improved, the seizure phenomenon is overcome, the service life can be prolonged by 10-100 times, the reduction of the on-line workpiece repairing time is reduced by prolonging the service life of the workpiece, the workpiece die is convenient to manage, the using amount of lubricating oil is greatly reduced, and the stability and the using effect are further improved.
Description
Technical Field
The invention relates to the technical field of TD (time division) treatment, in particular to an energy-saving TD process based on a vanadium carbide coating.
Background
A technology for treating the surface of TD mould by super-hardening it features that the workpiece is put in molten borax salt and its special medium at a certain temp. and the metallic carbide layer with more than several microns to more than twenty microns is formed by chemical reaction between metallic atoms in molten salt and carbon and nitrogen atoms in workpiece.
In the related art, in order to improve the performances of wear resistance, occlusion resistance, corrosion resistance and the like of a workpiece, the workpiece or a die is generally subjected to TD treatment, but the existing TD treatment process has complex steps, wastes time and labor in operation, needs a very professional technician to operate, needs more equipment, seriously reduces the treatment effect, improves the treatment cost, and has a limited range of improving the performances of wear resistance, occlusion resistance, corrosion resistance and the like of the treated workpiece and the treated workpiece by the TD treatment process.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, operation is inconvenient, steps are complicated, and the range of improving the properties of a treated workpiece, such as wear resistance, occlusion resistance, corrosion resistance and the like, is limited, and provides an energy-saving TD (time division) process based on a vanadium carbide coating.
In order to achieve the purpose, the invention adopts the following technical scheme:
an energy-saving TD process based on a vanadium carbide coating comprises the following steps:
s1, salt preparation: according to the size of a crucible, a certain amount of borax is taken, the borax is melted firstly, the proportioned metal oxide is added into the crucible, a certain amount of reducing agent is added into the crucible after the proportioned metal oxide is melted into the borax, and then the mixture is stirred by a stirring rod;
s2, mixing: after the borax reacts with the metal oxide in the step S1, pouring the product salt out of the crucible, and then adding new borax for salt melting work of the next pot, and circulating the steps;
s3, preheating the workpiece: placing the workpiece into a preheating furnace, preheating the workpiece through the preheating furnace, placing the preheated workpiece into a crucible, contacting with product salt, and slowly hanging the workpiece into a heating furnace for TD treatment;
s4, quenching: taking out the workpiece subjected to TD treatment in the heating furnace in the S3, and carrying out quenching treatment according to the steel property of the workpiece;
the workpiece is placed into the preheating furnace, the preheating furnace is used for preheating the workpiece, and the preheated workpiece is placed into the crucible and is contacted with the product salt, so that the product salt can be conveniently and fully contacted with the workpiece, the wear resistance and the adhesion resistance are further improved, the seizure phenomenon is overcome, and the service life can be prolonged by 10-100 times.
The above technical solution further comprises:
and the proportioned metal oxide in the S1 is placed into the crucible in a batch mode.
The metal oxide in the S1 is borax, vanadium pentoxide, aluminum, vanadium carbide, niobium, chromium and titanium.
The salt dissolving work in the S2 is not finished until the salt is well prepared and matched, and finally the sequential product salt does not need to be poured out;
the bottom position of the workpiece is wrapped by the final product salt, the comprehensiveness of wrapping the workpiece is improved, and the effect of reducing the reaction of the bottom position of the workpiece in the reaction process is avoided.
The preheating furnace in the S3 is one of a simple preheating furnace, a directly-heated preheating furnace or a hot air preheating furnace;
the preheating furnace is preferably one of a simple preheating furnace, a direct heating type preheating furnace or a hot air preheating furnace, so that the workpiece can be preheated in various modes, the preheating effect of the workpiece is improved, the subsequent reaction effect is further improved, and the chemical reaction of metal atoms in the special molten salt and carbon and nitrogen atoms in the workpiece is improved.
The preheating temperature in the S3 is 950-1050 ℃;
the preheating temperature is set to 950-1050 ℃, so that the workpiece is conveniently preheated to a boundary point of reaction with the product salt, the reaction effect between the product salt and the workpiece is improved, a metal carbide coating with the thickness of several micrometers to tens of micrometers is formed on the surface of the workpiece through high-temperature diffusion, the coating has extremely high hardness, the HV can reach about 3200, and the coating is metallurgically combined with a parent material.
After the preheated workpiece in the S3 is placed in a crucible, the product salt prepared in the S2 is placed in the crucible, the workpiece is wrapped, the crucible is placed on a vibration disc before the workpiece is moved to a heating furnace, and the workpiece is slightly vibrated by the vibration disc;
the product salt is fully wrapped on the workpiece, so that the product salt is fully reacted with the outer surface of the workpiece, the wear resistance and the adhesion resistance of different positions of the workpiece are improved, the service life of the workpiece is comprehensively prolonged, and the effect of fully wrapping the coating is improved.
When the steel grade of the workpiece in the S4 is 65Mn, 40MnB, T8, T11 and T12, normalizing, quenching and tempering can be carried out, in order to ensure the toughness, the quenching mode adopts high quenching and high tempering, and the cooling medium adopts gas quenching or air cooling; the quenching mode adopts high quenching high-speed return, and the cooling medium adopts gas quenching or air cooling, so that the deformation of the die in a high-temperature environment is reduced, and the deformation of the die in the TD process is minimized.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the workpiece is placed in the preheating furnace, the preheating furnace is used for preheating the workpiece, the preheated workpiece is placed in the crucible and is contacted with the product salt, so that the product salt can be conveniently and fully contacted with the workpiece, the wear resistance and the anti-adhesion property are further improved, the seizure phenomenon is overcome, the service life can be prolonged by 10-100 times, the reduction of the on-line workpiece repairing time is reduced by prolonging the service life of the workpiece, the workpiece die is convenient to manage, the using amount of lubricating oil is greatly reduced, and the stability and the using effect are further improved.
Drawings
FIG. 1 is a schematic diagram of the steps of an energy-saving TD process based on vanadium carbide coating.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1, the energy-saving TD process based on vanadium carbide coating provided by the invention comprises the following steps:
s1, salt preparation: according to the size of a crucible, a certain amount of borax is taken, the borax is melted firstly, the proportioned metal oxide is added into the crucible, a certain amount of reducing agent is added into the crucible after the proportioned metal oxide is melted into the borax, and then the mixture is stirred by a stirring rod;
s2, mixing: after the borax reacts with the metal oxide in the step S1, pouring the product salt out of the crucible, and then adding new borax for salt melting work of the next pot, and circulating the steps;
s3, preheating the workpiece: placing the workpiece into a preheating furnace, preheating the workpiece through the preheating furnace, placing the preheated workpiece into a crucible, contacting with product salt, and slowly hanging the workpiece into a heating furnace for TD treatment;
s4, quenching: taking out the workpiece subjected to TD treatment in the heating furnace in the S3, and carrying out quenching treatment according to the steel property of the workpiece;
the workpiece is placed in the preheating furnace, the preheating furnace is used for preheating the workpiece, and the preheated workpiece is placed in the crucible and is contacted with the product salt, so that the product salt can be fully contacted with the workpiece, the wear resistance and the adhesion resistance are further improved, the seizure phenomenon is overcome, and the service life can be prolonged by 10-100 times;
and through the improvement of work piece life, reduced the reduction of on-line work piece repair man-hour, the work piece mould is convenient for manage moreover, and the lubricating oil quantity very reduces, has further improved steadiness and result of use.
The above technical solution further comprises:
the proportioned metal oxide in the S1 is placed into the crucible in a batch mode, and the proportioned metal oxide is placed into the crucible in a batch mode, so that all ingredients can be mixed sufficiently, and the mixing effect is improved.
The metal oxide in the S1 is borax, vanadium pentoxide, aluminum, vanadium carbide, niobium, chromium and titanium.
The salt dissolving work in the S2 is not finished until the salt is well prepared and matched, and finally the sequential product salt does not need to be poured out;
the bottom position of the workpiece is wrapped by the final product salt, the comprehensiveness of wrapping the workpiece is improved, and the effect of reducing the reaction of the bottom position of the workpiece in the reaction process is avoided.
The preheating furnace in the S3 is one of a simple preheating furnace, a directly-heated preheating furnace or a hot air preheating furnace;
the preheating furnace is preferably one of a simple preheating furnace, a direct heating type preheating furnace or a hot air preheating furnace, so that the workpiece can be preheated in various modes, the preheating effect of the workpiece is improved, the subsequent reaction effect is further improved, and the chemical reaction of metal atoms in the special molten salt and carbon and nitrogen atoms in the workpiece is improved.
The preheating temperature in the S3 is 950-1050 ℃;
the preheating temperature is set to 950-1050 ℃, so that the workpiece is conveniently preheated to a boundary point of reaction with the product salt, the reaction effect between the product salt and the workpiece is improved, a metal carbide coating with the thickness of several micrometers to tens of micrometers is formed on the surface of the workpiece through high-temperature diffusion, the coating has extremely high hardness, the HV can reach about 3200, and the coating is metallurgically combined with a parent material. Practice proves that the coating has extremely high wear resistance, seizure resistance, corrosion resistance and other performances, can prolong the service life of a workpiece by several times to tens of times, and has extremely high use value.
In the embodiment, a certain amount of borax is taken according to the size of the crucible, the borax is melted firstly, the proportioned metal oxide is added into the crucible, after the proportioned metal oxide is all blended into the borax, then adding a certain amount of reducing agent into the crucible, stirring by a stirring rod, pouring the product salt out of the crucible after the borax reacts with the metal oxide, and then new borax is added for salt melting work of the next pot, the circulation is carried out, then the workpiece is placed into a preheating furnace, preheating the workpiece by a preheating furnace, placing the preheated workpiece into a crucible, contacting with product salt, slowly hanging into a heating furnace for TD treatment, finally taking out the workpiece subjected to TD treatment in the heating furnace, according to the properties of the steel of the workpiece, quenching treatment is carried out, so that the wear resistance and the adhesion resistance are improved, and the phenomenon of seizure is overcome.
Example two
Based on the first embodiment, after the preheated workpiece in S3 is placed in the crucible, the product salt prepared in S2 is placed in the crucible and the workpiece is wrapped, and before the workpiece is moved to the heating furnace, the crucible is placed on a vibrating tray, and the workpiece is slightly vibrated by the vibrating tray.
In the embodiment, the product salt is fully wrapped on the workpiece, so that the product salt is fully reacted with the outer surface of the workpiece, the wear resistance and the adhesion resistance of different positions of the workpiece are improved, the service life of the workpiece is comprehensively prolonged, and the effect of fully wrapping the coating is improved.
EXAMPLE III
Based on the second embodiment, when the steel grade of the workpiece in S4 is 65Mn, 40MnB, T8, T11, T12, the workpiece may be normalized and then quenched and tempered, in order to ensure the toughness, the quenching method may use high quenching speed, and the cooling medium may use gas quenching or air cooling, since the deformation of the die is difficult to avoid in a high temperature environment, and at the same time, the deformation of the die in the TD process may be strived to be minimized by some techniques and communication.
In the embodiment, when the steel grade of the workpiece is 65Mn, 40MnB, T8, T11 and T12, the normalizing process is performed first, and then the quenching and tempering process is performed, so as to ensure the toughness;
and the quenching mode adopts high quenching and high returning, and the cooling medium adopts gas quenching or air cooling, so that the deformation of the die in a high-temperature environment is reduced, and the deformation of the die in the TD process is minimized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An energy-saving TD process based on a vanadium carbide coating is characterized by comprising the following steps:
s1, salt preparation: according to the size of a crucible, a certain amount of borax is taken, the borax is melted firstly, the proportioned metal oxide is added into the crucible, a certain amount of reducing agent is added into the crucible after the proportioned metal oxide is melted into the borax, and then the mixture is stirred by a stirring rod;
s2, mixing: after the borax reacts with the metal oxide in the step S1, pouring the product salt out of the crucible, and then adding new borax for salt melting work of the next pot, and circulating the steps;
s3, preheating the workpiece: placing the workpiece into a preheating furnace, preheating the workpiece through the preheating furnace, placing the preheated workpiece into a crucible, contacting with product salt, and slowly hanging the workpiece into a heating furnace for TD treatment;
s4, quenching: and (4) taking out the workpiece subjected to TD treatment in the heating furnace in the S3, and carrying out quenching treatment according to the steel material property of the workpiece.
2. The energy-saving TD process based on vanadium carbide coating according to claim 1, wherein the proportioned metal oxide in S1 is put into the crucible in batch mode.
3. The energy-saving TD process based on vanadium carbide coating according to claim 1, wherein the metal oxide in S1 is borax, vanadium pentoxide, aluminum, vanadium carbide, niobium, chromium, titanium.
4. The energy-saving TD process based on vanadium carbide coating according to claim 1, characterized in that the salt dissolving operation in S2 is not finished until the salt is well prepared and the final sequential product salt is not poured out.
5. The energy-saving TD process based on vanadium carbide coating according to claim 1, wherein the preheating furnace in S3 is one of simple preheating furnace, direct heating preheating furnace or hot air preheating furnace.
6. The energy-saving TD process based on vanadium carbide coating according to claim 1, characterized in that the temperature of the preheating in S3 is 950 ℃ -1050 ℃.
7. The energy-saving TD process based on vanadium carbide coating of claim 1, wherein after the preheated work piece in S3 is put into the crucible, the prepared product salt in S2 is put into the crucible and the work piece is wrapped, and before moving to the heating furnace, the crucible is put on a vibration plate, and the work piece is slightly vibrated by the vibration plate.
8. The energy-saving TD process based on vanadium carbide coating of claim 1, wherein the steel type of the workpiece in S4 is 65Mn, 40MnB, T8, T11 and T12, the workpiece is subjected to normalizing, quenching and tempering, the quenching mode adopts high quenching high return, and the cooling medium adopts gas quenching or air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111229669.4A CN114015974A (en) | 2021-10-21 | 2021-10-21 | Energy-saving TD (time division) process based on vanadium carbide coating |
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| CN202111229669.4A CN114015974A (en) | 2021-10-21 | 2021-10-21 | Energy-saving TD (time division) process based on vanadium carbide coating |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876887A (en) * | 2006-07-07 | 2006-12-13 | 成都金品科技发展有限公司 | Metal workpiece with vanadium-niobium impregnated surface using borax molten salt as carrier and production method thereof |
| CN201381358Y (en) * | 2009-02-09 | 2010-01-13 | 深圳市和胜金属技术有限公司 | System of TD process equipment |
-
2021
- 2021-10-21 CN CN202111229669.4A patent/CN114015974A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876887A (en) * | 2006-07-07 | 2006-12-13 | 成都金品科技发展有限公司 | Metal workpiece with vanadium-niobium impregnated surface using borax molten salt as carrier and production method thereof |
| CN201381358Y (en) * | 2009-02-09 | 2010-01-13 | 深圳市和胜金属技术有限公司 | System of TD process equipment |
Non-Patent Citations (1)
| Title |
|---|
| 王华昌等: "GCr15钢模具TD渗金属及最终热处理的工艺优化", 热加工工艺, vol. 39, no. 06, pages 129 * |
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