CN104831291A - Carburization process for automobile hub - Google Patents
Carburization process for automobile hub Download PDFInfo
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- CN104831291A CN104831291A CN201510235172.1A CN201510235172A CN104831291A CN 104831291 A CN104831291 A CN 104831291A CN 201510235172 A CN201510235172 A CN 201510235172A CN 104831291 A CN104831291 A CN 104831291A
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- wheel hub
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- hub
- carburization process
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Abstract
The invention discloses a carburization process for an automobile hub. The carburization process comprises the following steps: (1) carburization; (2) pre-cooling; (3) primary quenching; (4) cleaning; (5) high-temperature tempering; (6) preheating; (7) secondary quenching; and (8) low-temperature tempering. The carburization process disclosed by the invention has the beneficial effect that the content of residual austenite on the surface of the hub and the thickness of non-martensite layer of the hub are reduced.
Description
Technical field
The invention belongs to carburizing tech field, particularly a kind of automotive hub carburization process.
Background technology
Commonly use after into carburizing precooling at existing carburizing quenching process, direct quenching, but in the rear infiltration layer of quenching, remained austenite content is higher, especially for essential coarse-grained steel, surface easily forms carbide network, and surface hardness is difficult to reach technical requirements.Also have a kind of carburizing quenching process to be primary quenching after the cold sky of carburizing, performance makes moderate progress, but is still difficult to meet technical requirements for the key components and parts that mechanical property requirements is higher.Be typically employed in roll flute after carburizing and quenching, but stress can be changed into pressure by roll flute for this reason, unfavorable to the mechanical property of workpiece; Or carry out shot peening strengthening, but this stress decays in high speed rotating heat-dissipating, affects its mechanical property.
Summary of the invention
The present invention proposes a kind of wheel hub carburization process.
Technical scheme of the present invention is achieved in that a kind of automotive hub carburization process, comprises the steps:
1) carburizing, carburizing temperature is 800-825 DEG C;
2) precooling, is chilled to 7150-740 DEG C in advance by wheel hub, insulation 2-3 hour;
3) primary quenching, by wheel hub dip quench oil, temperature remains on 100-120 DEG C, and stirs quenching oil;
4) clean, with gasoline, wheel hub is cleaned;
5) high tempering, is heated to 720-730 DEG C by wheel hub, and is incubated 2-3 hour, and high tempering carries out within an hour after primary quenching;
6) preheating, is preheated to 730-740 DEG C by wheel hub, insulation 2-3 hour;
7) secondary quenching, by wheel hub dip quench oil, temperature remains on 125-130 DEG C, and stirs quenching oil;
8) low-temperaturetempering, is heated to 160-170 DEG C by wheel hub, and is incubated 2-3 hour, and high tempering carries out within an hour after secondary quenching.
Beneficial effect of the present invention: the present invention makes hub surface residual austenite content and non-martensite layer thickness reduce.
Embodiment
Embodiment provided by the invention is described in further detail in conjunction with the embodiments:
A kind of automotive hub carburization process, comprises the steps:
1) carburizing, carburizing temperature is 800-825 DEG C;
2) precooling, is chilled to 7150-740 DEG C in advance by wheel hub, insulation 2-3 hour;
3) primary quenching, by wheel hub dip quench oil, temperature remains on 100-120 DEG C, and stirs quenching oil;
4) clean, with gasoline, wheel hub is cleaned;
5) high tempering, is heated to 720-730 DEG C by wheel hub, and is incubated 2-3 hour, and high tempering carries out within an hour after primary quenching;
6) preheating, is preheated to 730-740 DEG C by wheel hub, insulation 2-3 hour;
7) secondary quenching, by wheel hub dip quench oil, temperature remains on 125-130 DEG C, and stirs quenching oil;
8) low-temperaturetempering, is heated to 160-170 DEG C by wheel hub, and is incubated 2-3 hour, and high tempering carries out within an hour after secondary quenching.
The present invention makes hub surface residual austenite content and non-martensite layer thickness reduce.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification sheets is regarded in an illustrative, rather than a restrictive.
Claims (1)
1. an automotive hub carburization process, is characterized in that, comprises the steps:
1) carburizing, carburizing temperature is 800-825 DEG C;
2) precooling, is chilled to 7150-740 DEG C in advance by wheel hub, insulation 2-3 hour;
3) primary quenching, by wheel hub dip quench oil, temperature remains on 100-120 DEG C, and stirs quenching oil;
4) clean, with gasoline, wheel hub is cleaned;
5) high tempering, is heated to 720-730 DEG C by wheel hub, and is incubated 2-3 hour, and high tempering carries out within an hour after primary quenching;
6) preheating, is preheated to 730-740 DEG C by wheel hub, insulation 2-3 hour;
7) secondary quenching, by wheel hub dip quench oil, temperature remains on 125-130 DEG C, and stirs quenching oil;
8) low-temperaturetempering, is heated to 160-170 DEG C by wheel hub, and is incubated 2-3 hour, and high tempering carries out within an hour after secondary quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510235172.1A CN104831291A (en) | 2015-05-11 | 2015-05-11 | Carburization process for automobile hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510235172.1A CN104831291A (en) | 2015-05-11 | 2015-05-11 | Carburization process for automobile hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104831291A true CN104831291A (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510235172.1A Pending CN104831291A (en) | 2015-05-11 | 2015-05-11 | Carburization process for automobile hub |
Country Status (1)
| Country | Link |
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| CN (1) | CN104831291A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886999A (en) * | 2016-06-13 | 2016-08-24 | 含山县朝霞铸造有限公司 | Superficial layer carburization process for automobile hub |
| CN106755788A (en) * | 2017-01-13 | 2017-05-31 | 大楚神驰车轮股份有限公司 | A kind of wheel quenching-and-tempering process |
| CN107574402A (en) * | 2017-09-04 | 2018-01-12 | 河池桂嘉知识产权服务有限公司 | The forging method of automotive hub |
| US20230106078A1 (en) * | 2021-10-06 | 2023-04-06 | Aktiebolaget Skf | Method of manufacturing a brinelling-resistant hub bearing unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643241A (en) * | 2013-11-26 | 2014-03-19 | 常熟市东风齿轮厂 | Gear carburization quenching technology |
| CN104120431A (en) * | 2014-07-29 | 2014-10-29 | 武穴市长江工具有限责任公司 | Carburizing and manufacturing technology for split down-the-hole drill bit |
| CN104357796A (en) * | 2014-11-24 | 2015-02-18 | 张家港保税区奇利国际贸易有限公司 | Carburizing and quenching process of automobile gear |
-
2015
- 2015-05-11 CN CN201510235172.1A patent/CN104831291A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643241A (en) * | 2013-11-26 | 2014-03-19 | 常熟市东风齿轮厂 | Gear carburization quenching technology |
| CN104120431A (en) * | 2014-07-29 | 2014-10-29 | 武穴市长江工具有限责任公司 | Carburizing and manufacturing technology for split down-the-hole drill bit |
| CN104357796A (en) * | 2014-11-24 | 2015-02-18 | 张家港保税区奇利国际贸易有限公司 | Carburizing and quenching process of automobile gear |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886999A (en) * | 2016-06-13 | 2016-08-24 | 含山县朝霞铸造有限公司 | Superficial layer carburization process for automobile hub |
| CN106755788A (en) * | 2017-01-13 | 2017-05-31 | 大楚神驰车轮股份有限公司 | A kind of wheel quenching-and-tempering process |
| CN107574402A (en) * | 2017-09-04 | 2018-01-12 | 河池桂嘉知识产权服务有限公司 | The forging method of automotive hub |
| US20230106078A1 (en) * | 2021-10-06 | 2023-04-06 | Aktiebolaget Skf | Method of manufacturing a brinelling-resistant hub bearing unit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150812 |