heat hardening是什么意思 heat hardening怎么读
heat hardening的用法和样例
- So we find that hardening operation is made up of heating and quenching.
因此我们发现淬火工序包括加热和淬硬两个步骤。 - Its original heat treament processes were graphitizing annealing,quenching and tempering,then high-frequency hardening.
同时因齿条形状特殊，高频淬火时易将齿部完全淬透，不能满足用户要求。
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