CN107653433B - A kind of heat treatment process of automobile gimbal cross axle - Google Patents
A kind of heat treatment process of automobile gimbal cross axle Download PDFInfo
- Publication number
- CN107653433B CN107653433B CN201710817309.3A CN201710817309A CN107653433B CN 107653433 B CN107653433 B CN 107653433B CN 201710817309 A CN201710817309 A CN 201710817309A CN 107653433 B CN107653433 B CN 107653433B
- Authority
- CN
- China
- Prior art keywords
- carburizing
- cross axle
- furnace
- temperature
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C23C8/20—Carburising
- C23C8/22—Carburising 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Abstract
The invention discloses a kind of heat treatment process of automobile gimbal cross axle, after sealing box type multipurpose furnace is warming up to 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in furnace, when furnace temperature is warming up to 915 DEG C ± 5 DEG C again, carbon potential keeps 0.5%, samming 10min, then formally start carburizing, 915 DEG C ± 5 DEG C of carburizing temperature, carburizing carbon potential is 1.15%, carburizing time 160min；Universal-joint cross trunnion after carburizing is cooled to 860 DEG C, adjustment carbon potential is 0.95%, while being passed through ammonia, ammonia flow 4-6ml/min, samming 10min, then enters oil temperature and is 60-80 DEG C of quenching oil hardening, and imposes moderate-speed mixer；Quenching rear universal joint cross axle carries out 100-130min tempering in 170-190 DEG C of tempering furnace.By improving the temperature and carbon potential of carburizing and quenching, cooling velocity is increased, ammonia is passed through in hardening heat sustained period, increases the hardenability of cross axle, improve the performance of automobile gimbal cross axle.
Description
Technical field
The present invention relates to a kind of heat treatment process of automobile gimbal cross axle, belong to technical field of heat treatment.
Background technique
Universal-joint cross trunnion is the key part of automobile gimbal transmission device, and universal-joint cross trunnion must have good
Mechanical property, this requires to carry out carburizing and quenching to universal-joint cross trunnion, to its surface hardness, effective hardness layer, the heart
Portion's hardness and metallographic structure are controlled, it is made to have high wearability and anti-fatigue performance under service condition.
But universal-joint cross trunnion is usually to use low-carbon alloy steel 20Cr steel, after traditional heat treatment process
It was found that residual austenite content is more in universal-joint cross trunnion metallographic structure, surface hardness and centre hardness are all to be improved.
Summary of the invention
The present invention provides a kind of heat treatment process of automobile gimbal cross axle, and which overcome present in background technique
It is insufficient.The technical solution adopted by the present invention to solve the technical problems is:
A kind of heat treatment process of automobile gimbal cross axle, comprising:
Carburization step
After sealing box type multipurpose furnace is warming up to 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in furnace, furnace temperature heats up again
When to 915 DEG C ± 5 DEG C, carbon potential keeps 0.5%, samming 10min, then formally starts carburizing, 915 DEG C ± 5 DEG C of carburizing temperature, seeps
Carbon carbon potential is 1.15%, carburizing time 160min；
Quenching Step
Universal-joint cross trunnion after carburizing is cooled to 860 DEG C, adjustment carbon potential is 0.95%, while being passed through ammonia, ammonia
Flow is 4-6ml/min, samming 10min, then enters oil temperature and is 60-80 DEG C of quenching oil hardening, and imposes moderate-speed mixer；
Tempering step
Quenching rear universal joint cross axle carries out 100-130min tempering in 170-190 DEG C of tempering furnace.
Among one preferred embodiment: oil temperature when quenching oil hardening is 70 DEG C.
Among one preferred embodiment: the temperature of tempering furnace is 180 DEG C, tempering time 120min.
Among one preferred embodiment: for automobile gimbal cross axle after Overheating Treatment, metallographic structure is acicular martensite
The a small amount of acinous carbide 5% of 81%+ retained austenite 14%+.
Among one preferred embodiment: automobile gimbal cross axle is after Overheating Treatment, surface hardness 60-61HRC, the heart
Portion's hardness is 40HRC, carburized (case) depth 0.6-0.8mm.
The technical program compared with the background art, it has the following advantages:
1. carburizing equipment uses sealing box type multipurpose furnace, reaches 915 DEG C of ± 5 DEG C of Shi Jinlu in furnace temperature heating, wait until furnace temperature
When reaching carburization process temperature, keep carbon potential not less than 0.5%, samming 10min and then progress carburizing.In this way, making workpiece table
Face and center portion temperature increase carburizing uniformity close to carburizing is carried out again after consistent.
2. improving carburizing temperature in carburizing process, carbon potential is increased, shortens carburizing time, it is non-to advantageously reduce cross axle surface
Martensite, and reduce production cost.
3. improving hardening heat, and it is passed through the ammonia of 4-6ml/min within the hardening heat retention time, improves cross axle
Harden ability, hardenability, change after quenching sufficiently, retained austenite is reduced, and martensite uniformly refines, and grade improves.
4. carburized layer has appropriate retained austenite and a small amount of carbide, and carbide morphology and distribution are good, center portion tool
There is the hardness of 40HRC, this makes cross axle have good obdurability, wearability and anti-fatigue performance.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 depicts the metallographic diagram after universal-joint cross trunnion heat treatment.
Specific embodiment
Please refer to Fig. 1, a kind of heat treatment process of automobile gimbal cross axle of the invention, comprising:
Carburization step
After sealing box type multipurpose furnace is warming up to 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in furnace, furnace temperature heats up again
When to 915 DEG C ± 5 DEG C, carbon potential keeps 0.5%, samming 10min, then formally starts carburizing, 915 DEG C ± 5 DEG C of carburizing temperature, seeps
Carbon carbon potential is 1.15%, carburizing time 160min；
Quenching Step
Universal-joint cross trunnion after carburizing is cooled to 860 DEG C, adjustment carbon potential is 0.95%, while being passed through ammonia, ammonia
Flow is 4-6ml/min, samming 10min, then enters oil temperature and is 70 DEG C of quenching oil hardening, and imposes moderate-speed mixer；
Tempering step
Quenching rear universal joint cross axle carries out 120min tempering in 180 DEG C of tempering furnace.
Automobile gimbal cross axle uses low-carbon alloy steel 20Cr steel, and after Overheating Treatment, metallographic structure is needle-shaped horse
The a small amount of acinous carbide 5% (please referring to Fig. 1) of family name body 81%+ retained austenite 14%+.Automobile gimbal cross axle is through overheating
After processing, surface hardness 60-61HRC, centre hardness 40HRC, carburized (case) depth 0.6-0.8mm.
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (5)
1. a kind of heat treatment process of automobile gimbal cross axle, comprising:
Carburization step
After sealing box type multipurpose furnace is warming up to 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in furnace, furnace temperature is warming up to 915 again
At DEG C ± 5 DEG C, carbon potential keeps 0.5%, samming 10min, then formally starts carburizing, and 915 DEG C ± 5 DEG C of carburizing temperature, carburizing carbon
Gesture is 1.15%, carburizing time 160min；
Quenching Step
Universal-joint cross trunnion after carburizing is cooled to 860 DEG C, adjustment carbon potential is 0.95%, while being passed through ammonia, ammonia flow
For 4-6ml/min, samming 10min, then enter oil temperature and be 60-80 DEG C of quenching oil hardening, and imposes moderate-speed mixer；
Tempering step
Quenching rear universal joint cross axle carries out 100-130min tempering in 170-190 DEG C of tempering furnace.
2. the heat treatment process of automobile gimbal cross axle according to claim 1, it is characterised in that: when quenching oil hardening
Oil temperature be 70 DEG C.
3. the heat treatment process of automobile gimbal cross axle according to claim 1, it is characterised in that: the temperature of tempering furnace
It is 180 DEG C, tempering time 120min.
4. the heat treatment process of automobile gimbal cross axle according to claim 1 or 2 or 3, it is characterised in that: automobile ten thousand
To section cross axle after Overheating Treatment, metallographic structure is a small amount of acinous carbon of acicular martensite 81%+ retained austenite 14%+
Compound 5%.
5. the heat treatment process of automobile gimbal cross axle according to claim 1 or 2 or 3, it is characterised in that: automobile ten thousand
To section cross axle after Overheating Treatment, surface hardness 60-61HRC, centre hardness 40HRC, carburized (case) depth 0.6-
0.8mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817309.3A CN107653433B (en) | 2017-09-12 | 2017-09-12 | A kind of heat treatment process of automobile gimbal cross axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817309.3A CN107653433B (en) | 2017-09-12 | 2017-09-12 | A kind of heat treatment process of automobile gimbal cross axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107653433A CN107653433A (en) | 2018-02-02 |
| CN107653433B true CN107653433B (en) | 2019-10-22 |
Family
ID=61129619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710817309.3A Active CN107653433B (en) | 2017-09-12 | 2017-09-12 | A kind of heat treatment process of automobile gimbal cross axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107653433B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109277453A (en) * | 2018-09-03 | 2019-01-29 | 浙江跃进机械有限公司 | It is a kind of for producing the punching tool and its surface treatment method of automobile connecting bar |
| CN110438319B (en) * | 2019-08-06 | 2021-02-19 | 厦门真冈热处理有限公司 | Heat treatment method of sliding block |
| CN111647843A (en) * | 2020-06-17 | 2020-09-11 | 北华航天工业学院 | Composite heat treatment process for manufacturing hollow brick mold by using plate |
| CN111719041B (en) * | 2020-06-23 | 2022-02-01 | 杭州萧山中亚汽配有限公司 | Heat treatment system and heat treatment method for universal joint cross shaft of automobile |
| CN112981419A (en) * | 2021-02-03 | 2021-06-18 | 万向钱潮股份有限公司 | Heat treatment process of cold-extruded cross shaft |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776471A (en) * | 2012-07-10 | 2012-11-14 | 镇江中船设备有限公司 | Carburizing quenching technology for low-carbon alloy steel parts |
| CN103014595B (en) * | 2012-12-27 | 2014-11-26 | 金湖县常盛动力机械配件有限公司 | Carburizing method of low-carbon alloy steel |
| CN106222606B (en) * | 2016-08-31 | 2019-07-12 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of process controlling carburized workpiece non-martensite depth |
-
2017
- 2017-09-12 CN CN201710817309.3A patent/CN107653433B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107653433A (en) | 2018-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107653433B (en) | A kind of heat treatment process of automobile gimbal cross axle | |
| CN106756754B (en) | The carburization quenching method of automobile gearbox gear | |
| CN105200201B (en) | A kind of carbo-nitriding heat-treating methods for screw | |
| CN110438319A (en) | A kind of heat treatment method of sliding block | |
| CN103602797A (en) | High-hardness steel cut wire shot heat treatment technology | |
| CN108342680B (en) | Carbonitriding method for thin-wall steel parts | |
| WO2012081229A1 (en) | High-carbon chromium bearing steel, and process for production thereof | |
| CN101974676B (en) | Breaking-preventing knuckle spindle and thermal treatment method thereof | |
| CN104498966A (en) | Process for tufftriding amino gas | |
| CN109055707A (en) | The heat treatment process of high-carbon-chromium bearing steel part | |
| JP3006034B2 (en) | High strength mechanical structural members with excellent surface pressure strength | |
| JP2000129347A (en) | Production of high strength parts | |
| JP2007246941A (en) | Component for high facial pressure and its production method | |
| JPH11309630A (en) | Manufacture of part made of steel material | |
| CN106244979A (en) | A kind of method of carbon Chromador Nitric white hardness in raising | |
| JP2002030338A (en) | High concentration carburizing and quenching method of steel, and high concentration carburizing and quenching parts | |
| CN107345268A (en) | A kind of heat treatment method of low-carbon alloy steel chain hinge pin | |
| CN108588633A (en) | A kind of medium temperature gas nitrocarburizing quenching technical | |
| CN107937862A (en) | A kind of carburization process for chain production | |
| CN108060353A (en) | A kind of shield engine disk type hobbing cutter ring alloy | |
| CN103882206B (en) | Engineering machinery use the integral quenching method of wheel body | |
| CN109355615A (en) | A kind of 12CrNi3A carburization quenching method | |
| CN105063333A (en) | Thermal processing technology of lower bainite impact resistance cast grinding ball | |
| CN106222605A (en) | A kind of gear carburizing quenching process | |
| JPH02294462A (en) | Carburizing quenching method for steel member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |