critical hardening temperature

常见例句

The lower heat-treating temperature of the case results from the fact that hypereutectoid steels are normally austenitized for hardening just above the lower critical point.
由于恰好高于低临界温度通常使过共析钢奥氏体化而硬化，所以对外层采用较低的热处理温度。
Hardening . This is the process of heating to a temperature above the critical range , and cooling rapidly enough through the critical range to appreciably harden the steel .
淬火，该工艺是加热工件到临界温度以上，然后以足够快的速度进行冷却通过临界温度区域以使工件明显硬化。
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Tempering . This is the process of heating quenched and hardened steels and alloys to some temperature below the lower critical temperature to reduce internal stress setup in hardening.
这是把加热急速冷却到临界温度之下的某一温度，使钢和合金硬化的工艺，用来减小硬化中产生的内应力。