| 发明名称 |
Heat treatment process for bushing used in track of endless track tractor |
| 摘要 |
A heat treatment process applicable to bushings used in tracks of endless track tractor comprises heating a bushing made of middle carbon low alloy steel material from the outer peripheral surface thereof until the inner circumferential surface thereof achieves a temperature range of Ac3</=T</=Ac3+50 DEG C. where T is the temperature in DEG C. of the heated circumferential surface and Ac3 is the transformation temperature in DEG C. of the steel. The heating is accomplished with an induction heating whereafter the steel is cooled from the outer peripheral surface, resulting in hardening the same along the entire thickness thereof. The treatment is followed by tempering of the steel.
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| 申请公布号 |
US5049207(A) |
申请公布日期 |
1991.09.17 |
| 申请号 |
US19890351438 |
申请日期 |
1989.05.12 |
| 申请人 |
TOPY INDUSTRIES LIMITED |
发明人 |
SAHARA, TAKAHIKO;KUSANO, HISAHIKO;KANEKO, MASAYOSHI;NAKAJIMA, MASAHIRO;SATO, TOSHIHIKO |
| 分类号 |
B62D55/21;C21D1/10;C21D9/14;C21D9/40 |
主分类号 |
B62D55/21 |
| 代理机构 |
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