CN102296168A - Automobile shock absorber pin quenching process - Google Patents
Automobile shock absorber pin quenching process Download PDFInfo
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- CN102296168A CN102296168A CN2011102699341A CN201110269934A CN102296168A CN 102296168 A CN102296168 A CN 102296168A CN 2011102699341 A CN2011102699341 A CN 2011102699341A CN 201110269934 A CN201110269934 A CN 201110269934A CN 102296168 A CN102296168 A CN 102296168A
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Abstract
The invention discloses an automobile shock absorber pin quenching process, which is characterized by comprising the steps of heating, tempering heating, oil cooling. In the process, the heating temperature is reduced to 790 DEG C from 850 DEG C required by the conventional process, the heating time is increased to 80 minutes from 50 minutes, the tempering heating temperature is reduced to 540 from 580, and the tempering heating time is kept unchanged. When the sub-temperature quenching process is used, the axial cracking of the shock absorber pin workpiece can be prevented, and the product qualification rate can reach 100 percent.
Description
Technical field
The present invention relates to the heat-treatment technology method in a kind of mechanical workout, particularly a kind of automobile absorber pin quenching technology.
Background technology
The automobile absorber pin is the vitals on the automobile, and the quality of its over-all properties directly has influence on the reliability and the security of automobile, and the quenching technology in its process of manufacture is that its over-all properties is played decisive role.Existing quenching technology is to heat 50 minutes under 850 ℃ of temperature earlier, carries out tempering heating 90 minutes, last oil cooling fast after the cooling again under 580 ℃ of temperature.Adopt the workpiece spindle after above-mentioned processing parameter quenches to reach more than 24% to the cracking rate, product percent of pass is low.
Summary of the invention
The objective of the invention is in order to overcome the weak point of above-mentioned technology, and provide a kind of workpiece spindle of stopping to rimose automobile absorber pin quenching technology.
For achieving the above object, the concrete treatment process of the present invention's employing is as follows:
1, heats: workpiece vibroshock pin is placed under 790 ℃ of temperature heated 80 minutes.
2, tempering heating: will place through the workpiece vibroshock pin after above-mentioned heating is also air-cooled fast to heat under 540 ℃ of temperature and carry out the tempering heating in 90 minutes.
3, oil cooling: the workpiece vibroshock pin after the tempered heating is put into quenching medium rapidly cool off.
The present invention is owing to adopt above treatment process, processing parameter, Heating temperature is reduced to 790 ℃, time by 850 ℃ of current technology be increased to 80 minutes by 50 minutes, it is constant that the tempering Heating temperature is reduced to 540 ℃, 90 minutes time by 580 ℃, because Heating temperature all descends, so be called intercritical hardening, adopt this technology can stop the axial cracking phenomena of workpiece vibroshock pin, product qualification rate reaching 100%.
Embodiment
1, roughwrought workpiece vibroshock pin is placed under 790 ℃ of temperature heating 80 minutes.
2, will through above-mentioned heating and fast air-cooled after workpiece vibroshock pin place under 540 ℃ of temperature heating to carry out the tempering heating in 90 minutes.
3, the workpiece vibroshock pin after the tempered heating is put into quenching medium rapidly and cool off, quenching medium is the polyvinyl alcohol water solution of employing 3%～5%.
Claims (1)
1. automobile absorber pin quenching technology is characterized in that adopting following treatment step:
(1) heats: workpiece vibroshock pin is placed under 790 ℃ of temperature heated 80 minutes;
(2) tempering heating: will place through the workpiece vibroshock pin after above-mentioned heating is also air-cooled fast to heat under 540 ℃ of temperature and carry out the tempering heating in 90 minutes;
(3) oil cooling: the workpiece vibroshock pin after the tempered heating is put into quenching medium rapidly cool off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102699341A CN102296168A (en) | 2011-09-14 | 2011-09-14 | Automobile shock absorber pin quenching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102699341A CN102296168A (en) | 2011-09-14 | 2011-09-14 | Automobile shock absorber pin quenching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102296168A true CN102296168A (en) | 2011-12-28 |
Family
ID=45356843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102699341A Pending CN102296168A (en) | 2011-09-14 | 2011-09-14 | Automobile shock absorber pin quenching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102296168A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2908525Y (en) * | 2006-05-25 | 2007-06-06 | 山推工程机械股份有限公司 | Pin shaft hardening device |
| CN102168166A (en) * | 2011-03-31 | 2011-08-31 | 长城汽车股份有限公司 | Medium-frequency quenching and self-tempering process for automobile steering knuckle |
-
2011
- 2011-09-14 CN CN2011102699341A patent/CN102296168A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2908525Y (en) * | 2006-05-25 | 2007-06-06 | 山推工程机械股份有限公司 | Pin shaft hardening device |
| CN102168166A (en) * | 2011-03-31 | 2011-08-31 | 长城汽车股份有限公司 | Medium-frequency quenching and self-tempering process for automobile steering knuckle |
Non-Patent Citations (2)
| Title |
|---|
| 张启军: "销轴淬火裂纹的产生及预防措施", 《金属热处理》 * |
| 程俊萍: "30CrMnTi销轴类零件的实用热处理工艺", 《机械管理开发》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111228 |