| Original document(5 pages) Authorized document(5 pages) 中文版 |
The process for raising strong toughness and hardened layer depth of axle shaft of heavy lorry belongs to the field of heat treatment technology, and includes the following steps: blanking, forging; blank thermal refining, hardening temp. is at 850-890 deg.C, heating time is 140-160 min., hardening agent is diesel oil, tempering temperature is at 560-620 deg.C, heating time is 180 min.; cooling; machining; mild-frequency induction quenching, quenching temperature 870-900 deg.C, hardening liquid is 8-13% Jinyu hardening liquid, power supply output power is 65-70 KW, frequency is 1650-1700 Hz, work piece moving speed 1.8-2.1 mm/s, static heating time is 8-15s, delayed water-spraying time is 2s, gap between induction coil and axle shaft rod surface is 5-8 mm gap between induction coil undersurface and vertical direction of flange surface is 4-5 mm. |
Application Number
申请号 |
03111931 |
Application Date
申请日 |
2003.03.04 |
| Title 名称 |
Technological method for raising toughness and hardening layer depth of heavy truck axle shaft |
Publication Number
公开号 |
1433900 |
Publication Date
公开日 |
2003.08.06 |
| Approval Pub. Date |
2006.04.19 |
Granted Pub. Date |
2006.04.19 |
| International Classification 分类号 |
C21D9/28,C21D1/06,B60B35/00 |
Applicant(s) Name
申请人 |
China Heavy Truck Group Co., Ltd. |
| Address 地址 |
250002 |
| Inventor(s) Name 发明人 |
Lu Tonglun, Shen Jingchun |
| Attorney & Agent 代理人 |
li jiankang |
| More information 更 多 信 息 |
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