CN109295411A - A kind of automobile transmission gear under Q&P&T technique - Google Patents
A kind of automobile transmission gear under Q&P&T technique Download PDFInfo
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- CN109295411A CN109295411A CN201811490113.9A CN201811490113A CN109295411A CN 109295411 A CN109295411 A CN 109295411A CN 201811490113 A CN201811490113 A CN 201811490113A CN 109295411 A CN109295411 A CN 109295411A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 title claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000005240 physical vapour deposition Methods 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 11
- 238000004321 preservation Methods 0.000 claims abstract description 11
- 229910018509 Al—N Inorganic materials 0.000 claims abstract description 9
- 238000010791 quenching Methods 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 40
- 229910021529 ammonia Inorganic materials 0.000 claims description 20
- 238000005121 nitriding Methods 0.000 claims description 15
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000005336 cracking Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 235000019628 coolness Nutrition 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910001566 austenite Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000717 retained effect Effects 0.000 abstract description 3
- 230000002929 anti-fatigue Effects 0.000 abstract description 2
- 238000007747 plating Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 235000019589 hardness Nutrition 0.000 description 13
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
-
- 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
- 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
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/46—Salt baths
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5806—Thermal treatment
-
- 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
- C21D2221/00—Treating localised areas of an article
- C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of automobile transmission gear under Q&P&T technique.Nitrizing Treatment is carried out to gear before mainly comprising the steps that heat treatment and physical vapour deposition (PVD) process plating Cr-Al-N forms multilayer hardened layer.Heat treatment process uses and is heated to 850 ~ 920 °C of austenitizing temperatures, keep the temperature 3 ~ 10min, 1 ~ 3min is kept the temperature after being quenched to 150 ~ 220 DEG C in salt bath furnace, carbon partition (400 ~ 480 DEG C of 10 ~ 180s of heat preservation are heated in salt bath furnace) is carried out after the completion of quenching, then 200 ~ 250 DEG C of progress lonneals, 2 ~ 4h of heat preservation are cooled to, and are air-cooled to room temperature (Q&P&T).Present invention process is simple, it carries out Q&P&T heat treatment again in the case where being surface-treated to gear and increases residual austenite content and stability, toughness, the intensity of core can be improved while guaranteeing that hardness, wearability, thermal stability and the anti-fatigue performance of gear surface reach requirement.Due to the TRIP effect of retained austenite, the brittle fracture of gear can be effectively prevented and promote its shock resistance.Heat treatment time is short to may also reach up the purpose for saving the energy.
Description
Technical field
The present invention relates to gear surface processing and field of machining, and in particular to the automobile under a kind of Q&P&T technique passes
Moving gear.
Background technique
Heat treatment is to pass through different heat preservation and cooling technique by the way that gear is heated to a certain temperature of phase transition temperature or more
The process of martensitic structure required for obtaining.The process of heat treatment is directly related to institutional framework and the state of steel to shadow
Ring service performance and the service life of gear.Quenching-carbon partition-tempering (Q-P-T) heat treatment process are as follows: lower temperature austenitizing,
It is quenched to MsAnd MfA certain temperature is between temperature to obtain suitable martensite, more retained austenite richness carbon, and stablizes to room
Temperature commonly uses higher temperature and stops, carries out carbon distribution, and stays for some time and be tempered under tempering temperature.Physical vapor is heavy
Product is that material source is gasificated into gaseous atom, molecule or ion using physical method under vacuum conditions, is deposited in matrix surface
Gear surface service performance can be improved by PVD technique in the process of film.Pinion steel for vehicles mostly has good at present
Hardness and wear-resisting property, but the disadvantages of there are plasticity and toughness and not high intensity.With the continuous promotion required automotive performance, well
Gear drive effect to automotive safety service life and save the energy in terms of be of great significance.How people are for protect
Guarantee to have done many work in the obdurability problem of gear center portion while card tooth face hardness and wearability, and solves the problems, such as this
Cardinal principle be attributed to two aspects: i.e. the guarantee hardness of gear surface, wearability and oxidation resistance while guarantee core
With enough obdurabilities；Guarantee the hardened layer uniformity on surface and improve the stability of core retained austenite, when use also
Should there are higher bending fatigue strength and contact fatigue strength, also want with higher overload-resistant and impact resistance.Traditional
The nitride particles disperse degree that nitriding method obtains is low, has desmachyme generation, and the production cycle is long, energy consumption is high, not
It is able to satisfy the performance requirement of key component.
Summary of the invention
The purpose of the invention is to provide a kind of processing methods of the automobile transmission gear under Q&P&T technique.The present invention
The intensity and toughness for improving gear surface service performance and core can be integrated, efficiently, reduces and pollutes and save cost.Specifically
Step are as follows:
The first step, surface Hardening Treatment；
Second step, austenitizing；
Third step, quenching；
4th step, carbon partition；
5th step, lonneal.
The first step, surface Hardening Treatment include surface carburization and physical vapour deposition (PVD): quick using two sections of pre-oxidation
Nitriding process nitriding 350 ~ 400 DEG C of nitriding Pre oxidation, keeps the temperature 0.5h, is continuously heating to 490 DEG C of nitriding temperature, keeps the temperature 3.5h,
Ammonia decomposition 40% ~ 50% is continuously heating to 510 DEG C, keeps the temperature 21h, ammonia decomposition 65% ~ 75%, is passed through ammonia or ammonia is split
It vents one's spleen and is cooled to 150 DEG C of natural coolings of coming out of the stove, 0.31 ~ 0.37mm of depth of penetration, physical vapour deposition (PVD) plates Cr-Al-N: using straight
Non-balance magnetically controlled sputter technology is flowed, workpiece is placed in reaction chamber, vacuumizes to be placed in Ar+N2 environment and deposits, surrounding is respectively
Cr and pure Al target make the content of aluminium be increased to 64%, are deposited in magnetic field by control, are deposited on workpiece surface and form 6
The coating of ~ 8 μ m-thicks is heat-treated again.
The second step, austenitizing heat A in vacuumc3It is more than line temperature and be heated to 850 DEG C ~ 920 DEG C heat preservation 3 ~
10min。
The third step, quenching are quenched to 50 ~ 220 DEG C in salt bath furnace and keep the temperature 1 ~ 3min.
4th step, carbon partition carry out carbon partition after the completion of quenching, and 400 ~ 480 DEG C of heat preservations are heated in salt bath furnace
10~180s。
5th step, lonneal carry out 200 ~ 250 DEG C of lonneal, 2 ~ 4h of heat preservation after carbon partition, and air-cooled
To room temperature.
Effect of the invention is: forming multilayer hardened layer by surface peening mode and using the heat treatment of quenching carbon partition
Mode, improving gear wearability and anti-fatigue performance, the stability of austenite at normal temperature can be enhanced simultaneously and guarantee core toughness
And intensity, improve the shock resistance and service life of gear.
Specific embodiment:
Referring to heat treatment process and in conjunction with the embodiments the present invention will be described in detail, material 45Cr, 200 DEG C of lower substrate tempering hardnesses
For 56 ~ 58HRC.Specific implementation step are as follows: preparation shapes gear-Nitrizing Treatment-vapor deposition plating Cr-Al-N coating-
It is air-cooled to heat austenitizing-quenching (in salt bath furnace)-carbon partition-lonneal-.
Embodiment 1:
The present embodiment uses in automobile transmission gear production process, specific implementation step are as follows: the first step, surface Hardening Treatment are seeped
350 DEG C of nitrogen Pre oxidation, 0.5h is kept the temperature, is continuously heating to 490 DEG C of nitriding temperature, keeps the temperature 3.5h, ammonia decomposition 40%, after
It is continuous to be warming up to 510 DEG C, 21h is kept the temperature, ammonia decomposition 65%, is passed through ammonia or ammonia cracking gas is cooled to 150 DEG C and comes out of the stove, nitriding
Face 1093 ~ 1122HV of surface hardness.Physical vapour deposition (PVD) Cr-Al-N coating: direct current non-balance magnetically controlled sputter technology is used, by work
Part is placed in reaction chamber, is vacuumized and is placed in Ar+N2It is deposited in environment, surrounding is Cr and pure Al target respectively, makes aluminium by control
Content be increased to 64%, deposition surface layer is carried out in magnetic field, hardness can reach within the scope of 2600 ~ 3106HV.Heat treatment process
Two steps heat 850 DEG C × 5min of austenitizing；Third step quenches 170 DEG C × 60s in salt bath furnace；4th step, carbon partition, quenches
400 DEG C of heat preservation 30s are heated in salt bath furnace after fire；5th step then carries out 200 DEG C × 2h of lonneal, is air-cooled to room temperature；Core
Portion 54 ~ 56HRC of hardness, 14 ~ 16J of ballistic work, between 1510 ~ 1730MPa of tensile strength.
Embodiment 2:
Specific implementation step are as follows: the first step, surface Hardening Treatment, keep the temperature 0.5h, continue to heat up by 370 DEG C of nitriding Pre oxidation
To 490 DEG C of nitriding temperature, 3.5h is kept the temperature, ammonia decomposition 45% is continuously heating to 510 DEG C, keep the temperature 21h, ammonia decomposition 70%,
It is passed through ammonia or ammonia cracking gas is cooled to 150 DEG C and comes out of the stove, nitriding face 1093 ~ 1122HV of surface hardness.Physical vapour deposition (PVD) Cr-
Al-N coating: direct current non-balance magnetically controlled sputter technology is used, workpiece is placed in reaction chamber, vacuumizes and is placed in Ar+N2In environment
Deposition, surrounding are Cr and pure Al target respectively, so that the content of aluminium is increased to 64% by control, are deposited in magnetic field, hardness
It can reach within the scope of 2600 ~ 3106HV.Heat treatment process second step heats 900 DEG C × 7min of austenitizing；Third step, in salt
It is quenched to 200 DEG C in liquid furnace and keeps the temperature 120s；4th step, carbon partition are heated to 450 DEG C of heat preservation 150s in salt bath furnace after quenching；
5th step then carries out 220 DEG C × 2h of lonneal, is air-cooled to room temperature；54 ~ 56HRC of core hardness, 14 ~ 16J of ballistic work resist
Between 1510 ~ 1730MPa of tensile strength.
Embodiment 3:
Specific implementation step are as follows: the first step, surface Hardening Treatment, keep the temperature 0.5h, continue to heat up by 400 DEG C of nitriding Pre oxidation
To 490 DEG C of nitriding temperature, 3.5h is kept the temperature, ammonia decomposition 50% is continuously heating to 510 DEG C, keep the temperature 21h, ammonia decomposition 75%,
It is passed through ammonia or ammonia cracking gas is cooled to 150 DEG C and comes out of the stove, nitriding face 1093 ~ 1122HV of surface hardness.Physical vapour deposition (PVD) Cr-
Al-N coating: direct current non-balance magnetically controlled sputter technology is used, workpiece is placed in reaction chamber, vacuumizes and is placed in Ar+N2In environment
Deposition, surrounding are Cr and pure Al target respectively, so that the content of aluminium is increased to 64% by control, are deposited in magnetic field, hardness
It can reach within the scope of 2600~3106HV.Heat treatment process second step heats 920 DEG C × 10min of austenitizing；Third step,
It is quenched to 220 DEG C in salt bath furnace and keeps the temperature 180s；4th step, carbon partition are heated to 480 DEG C of heat preservations in salt bath furnace after quenching
180s；5th step then carries out 250 DEG C × 4h of lonneal, is air-cooled to room temperature；54 ~ 56HRC of core hardness, ballistic work 14 ~
Between 16J, 1510 ~ 1730MPa of tensile strength.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be considered as limiting the scope of the invention.All all the changes and improvements done according to the present patent application range etc. are equal
Should still it belong within patent covering scope of the invention.
Claims (3)
1. the automobile transmission gear under a kind of Q&P&T technique, the material is 45Cr, it is characterised in that: (1) gear surface is strengthened
Processing includes surface carburization and physical vapour deposition (PVD) plates Cr-Al-N coating, and (2) heat treatment process is first under vacuum or inert gas
Workpiece is heated to austenitizing temperature heat preservation, is then quenched in salt bath furnace, then carries out the carbon of short time at such a temperature
Then partition carries out lonneal and is finally air-cooled to room temperature.
2. the automobile transmission gear under a kind of Q&P&T technique according to claim 1, it is characterised in that: the surface is strong
Changing processing includes that surface carburization and physical vapour deposition (PVD) plate Cr-Al-N, 350 ~ 400 DEG C of nitriding Pre oxidation, keeps the temperature 0.5h, after
It is continuous to be warming up to 490 DEG C of nitriding temperature, 3.5h is kept the temperature, ammonia decomposition 40% ~ 50% is continuously heating to 510 DEG C, keeps the temperature 21h, ammonia
Resolution ratio 65% ~ 75%, is passed through ammonia or ammonia cracking gas is cooled to 150 DEG C of natural coolings of coming out of the stove, and depth of penetration 0.31~
0.37mm, physical vapour deposition (PVD) Cr-Al-N coating；Using direct current non-balance magnetically controlled sputter technology, workpiece is placed in reaction chamber,
It vacuumizes and is placed in Ar+N2In environment, surrounding is Cr and pure Al target respectively, so that the content of aluminium is increased to 64% by control, in magnetic
It is deposited in, the coating for being deposited on workpiece surface 6 ~ 8 μ m-thicks of formation is thermally treated again.
3. the automobile transmission gear under a kind of Q&P&T technique according to claim 1, it is characterised in that: the heat treatment
Heat gear keeps the temperature 3 ~ 10min to austenitizing temperature (850 ~ 920 DEG C) under technological temperature and time, vacuum or inert gas,
Then it is quenched to 150 ~ 220 DEG C in salt bath furnace and keeps the temperature 1 ~ 3min, carries out carbon partition after the completion of quenching and (is heated in salt bath furnace
To 400 ~ 480 DEG C and keep the temperature 10 ~ 180s), 200 ~ 250 DEG C of lonneal, 2 ~ 4h of heat preservation are then carried out, and be air-cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490113.9A CN109295411A (en) | 2018-12-06 | 2018-12-06 | A kind of automobile transmission gear under Q&P&T technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490113.9A CN109295411A (en) | 2018-12-06 | 2018-12-06 | A kind of automobile transmission gear under Q&P&T technique |
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| Publication Number | Publication Date |
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| CN109295411A true CN109295411A (en) | 2019-02-01 |
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| CN201811490113.9A Pending CN109295411A (en) | 2018-12-06 | 2018-12-06 | A kind of automobile transmission gear under Q&P&T technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760787A (en) * | 2019-12-05 | 2020-02-07 | 山东建筑大学 | Composite heat treatment strengthening method for lower swing arm of automobile suspension |
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|---|---|---|---|---|
| CN101285163A (en) * | 2008-05-12 | 2008-10-15 | 十堰市郧齿汽车零部件有限公司 | Nitriding method for engine timing gear with rigid tooth face |
| US20130037181A1 (en) * | 2010-04-17 | 2013-02-14 | Shanghai Jiaotong University | Integrated processing method for sheet steel hot stamping and heat treatment |
| CN104480478A (en) * | 2014-12-31 | 2015-04-01 | 马鞍山市安工大工业技术研究院有限公司 | Nitriding PVD composite coating and preparation method thereof |
| CN105385981A (en) * | 2015-12-10 | 2016-03-09 | 常州天山重工机械有限公司 | Thermal treatment process for effectively controlling nitrides of gear material |
| CN105463383A (en) * | 2015-11-30 | 2016-04-06 | 大连理工大学 | Compound reinforcement treating method for surface energy carrying beam of nitriding steel |
| CN107739975A (en) * | 2017-08-30 | 2018-02-27 | 宁波亿润汽车零部件有限公司 | A kind of ternary catalyzing unit support |
-
2018
- 2018-12-06 CN CN201811490113.9A patent/CN109295411A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285163A (en) * | 2008-05-12 | 2008-10-15 | 十堰市郧齿汽车零部件有限公司 | Nitriding method for engine timing gear with rigid tooth face |
| US20130037181A1 (en) * | 2010-04-17 | 2013-02-14 | Shanghai Jiaotong University | Integrated processing method for sheet steel hot stamping and heat treatment |
| CN104480478A (en) * | 2014-12-31 | 2015-04-01 | 马鞍山市安工大工业技术研究院有限公司 | Nitriding PVD composite coating and preparation method thereof |
| CN105463383A (en) * | 2015-11-30 | 2016-04-06 | 大连理工大学 | Compound reinforcement treating method for surface energy carrying beam of nitriding steel |
| CN105385981A (en) * | 2015-12-10 | 2016-03-09 | 常州天山重工机械有限公司 | Thermal treatment process for effectively controlling nitrides of gear material |
| CN107739975A (en) * | 2017-08-30 | 2018-02-27 | 宁波亿润汽车零部件有限公司 | A kind of ternary catalyzing unit support |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760787A (en) * | 2019-12-05 | 2020-02-07 | 山东建筑大学 | Composite heat treatment strengthening method for lower swing arm of automobile suspension |
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