CN107653433A - A kind of Technology for Heating Processing of automobile gimbal cross axle - Google Patents
A kind of Technology for Heating Processing of automobile gimbal cross axle Download PDFInfo
- Publication number
- CN107653433A CN107653433A CN201710817309.3A CN201710817309A CN107653433A CN 107653433 A CN107653433 A CN 107653433A CN 201710817309 A CN201710817309 A CN 201710817309A CN 107653433 A CN107653433 A CN 107653433A
- Authority
- CN
- China
- Prior art keywords
- carburizing
- cross axle
- temperature
- technology
- universal
- 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.)
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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
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- 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 Technology for Heating Processing of automobile gimbal cross axle, after sealing box type multipurpose furnace is warming up into 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in stove, when furnace temperature is warming up to 915 DEG C ± 5 DEG C again, carbon potential keeps 0.5%, samming 10min, then carburizing is formally started, 915 DEG C ± 5 DEG C of carburizing temperature, carburizing carbon potential are 1.15%, carburizing time 160min；Universal-joint cross trunnion after carburizing is cooled to 860 DEG C, adjustment carbon potential is 0.95%, while is passed through ammonia, and 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；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 Technology for Heating Processing of automobile gimbal cross axle, belong to technical field of heat treatment.
Background technology
Universal-joint cross trunnion is the vital 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, with to its case hardness, effective hardness layer, the heart
Portion's hardness and metallographic structure are controlled, and have high wearability and anti-fatigue performance under the conditions of making it under arms.
But universal-joint cross trunnion is typically to use low-carbon alloy steel 20Cr steel, after traditional Technology for Heating Processing
It was found that residual austenite content is more in universal-joint cross trunnion metallographic structure, case hardness and centre hardness all have much room for improvement.
The content of the invention
The invention provides a kind of Technology for Heating Processing of automobile gimbal cross axle, which overcome present in background technology
Deficiency.The technical solution adopted for the present invention to solve the technical problems is：
A kind of Technology for Heating Processing of automobile gimbal cross axle, including：
Carburization step
After sealing box type multipurpose furnace is warming up into 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in stove, furnace temperature heats up again
During 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, oozes
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 is 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 austenites 14%+.
Among one preferred embodiment：Automobile gimbal cross axle is after Overheating Treatment, case hardness 60-61HRC, the heart
Portion's hardness is 40HRC, carburized (case) depth 0.6-0.8mm.
Compared with background technology, it has the following advantages that the technical program：
1. carburizing equipment uses sealing box type multipurpose furnace, enter stove when furnace temperature heating reaches 915 DEG C ± 5 DEG C, when furnace temperature
When reaching carburization process temperature, carbon potential is kept not less than 0.5%, samming 10min and then progress carburizing.So, workpiece table is made
Face and center portion temperature add 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 4-6ml/min ammonia is passed through within the hardening heat retention time, improves cross axle
Quenching degree, hardenability, change abundant after quenching, 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 40HRC hardness, this makes cross axle have good obdurability, wearability and anti-fatigue performance.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 depicts the metallographic diagram after universal-joint cross trunnion heat treatment.
Embodiment
It refer to Fig. 1, a kind of Technology for Heating Processing of automobile gimbal cross axle of the invention, including：
Carburization step
After sealing box type multipurpose furnace is warming up into 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in stove, furnace temperature heats up again
During 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, oozes
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 is 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-like horse
The a small amount of acinous carbide 5% (refer to Fig. 1) of family name body 81%+ retained austenites 14%+.Automobile gimbal cross axle is through overheat
After processing, case hardness 60-61HRC, centre hardness 40HRC, carburized (case) depth 0.6-0.8mm.
It is described above, only present pre-ferred embodiments, therefore the scope that the present invention is implemented can not be limited according to this, i.e., according to
The equivalent changes and modifications that the scope of the claims of the present invention and description are made, all should still it belong in the range of the present invention covers.
Claims (5)
1. a kind of Technology for Heating Processing of automobile gimbal cross axle, including：
Carburization step
After sealing box type multipurpose furnace is warming up into 915 DEG C ± 5 DEG C, universal-joint cross trunnion is placed in stove, 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, 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 is 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 impose 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 Technology for Heating Processing 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 Technology for Heating Processing 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 Technology for Heating Processing of the 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 austenites 14%+
Compound 5%.
5. the Technology for Heating Processing of the automobile gimbal cross axle according to claim 1 or 2 or 3 or 4, it is characterised in that：Vapour
Car universal-joint cross trunnion is after Overheating Treatment, case hardness 60-61HRC, centre hardness 40HRC, and carburized (case) depth is
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 true CN107653433A (en) | 2018-02-02 |
| CN107653433B CN107653433B (en) | 2019-10-22 |
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| 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 |
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| CN (1) | CN107653433B (en) |
Cited By (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 |
| CN110438319A (en) * | 2019-08-06 | 2019-11-12 | 厦门真冈热处理有限公司 | A kind of 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 |
| CN111719041A (en) * | 2020-06-23 | 2020-09-29 | 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 |
Citations (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 |
| CN103014595A (en) * | 2012-12-27 | 2013-04-03 | 金湖县常盛动力机械配件有限公司 | Carburizing method of low-carbon alloy steel |
| CN106222606A (en) * | 2016-08-31 | 2016-12-14 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of process controlling the carburized workpiece non-martensite degree of depth |
-
2017
- 2017-09-12 CN CN201710817309.3A patent/CN107653433B/en active Active
Patent Citations (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 |
| CN103014595A (en) * | 2012-12-27 | 2013-04-03 | 金湖县常盛动力机械配件有限公司 | Carburizing method of low-carbon alloy steel |
| CN106222606A (en) * | 2016-08-31 | 2016-12-14 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of process controlling the carburized workpiece non-martensite degree of depth |
Cited By (6)
| 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 |
| CN110438319A (en) * | 2019-08-06 | 2019-11-12 | 厦门真冈热处理有限公司 | A kind of 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 |
| CN111719041A (en) * | 2020-06-23 | 2020-09-29 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107653433B (en) | 2019-10-22 |
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