critical hardening temperature

常見例句

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.
由于恰好高于低臨界溫度通常使過共析鋼奧氏體化而硬化，所以對外層采用較低的熱處理溫度。
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，該工藝是加熱工件到臨界溫度以上，然后以足夠快的速度進行冷卻通過臨界溫度區(qū)域以使工件明顯硬化。
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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.
這是把加熱急速冷卻到臨界溫度之下的某一溫度，使鋼和合金硬化的工藝，用來減小硬化中產生的內應力。