A heat treatment process for the cross shaft of an automobile universal joint
A cross shaft, automobile technology, applied in the field of heat treatment, can solve the problems of high retained austenite content, surface hardness and core hardness need to be improved, etc., to achieve uniform refinement of martensite, good shape and distribution, and increase in carbon potential effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0023] Please refer to figure 1 , a heat treatment process for a car universal joint cross shaft of the present invention, comprising:
[0024] Carburizing step
[0025] After raising the temperature of the sealed box-type multi-purpose furnace to 915°C±5°C, place the cross shaft of the universal joint in the furnace. Start carburizing, the carburizing temperature is 915°C±5°C, the carburizing carburizing potential is 1.15%, and the carburizing time is 160min;
[0026] Quenching step
[0027] Cool down the universal joint cross shaft after carburizing to 860°C, adjust the carbon potential to 0.95%, and feed ammonia gas at the same time. Quenching with quenching oil and stirring at medium speed;
[0028] tempering step
[0029] After quenching, the universal joint cross shaft is tempered in a tempering furnace at 180°C for 120min.
[0030] The cross shaft of the automobile universal joint is made of low-carbon alloy steel 20Cr steel. After heat treatment, the metallograph...
PUM
Property | Measurement | Unit |
---|---|---|
depth | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com