Some specific values of cooling characteristics of quenchant can be used to forecast the steel hardening power, distortion and cracking susceptibility and select the quenchants.

• 根据淬火介质冷却特性曲线上的几个特性值，选择淬火介质来预测钢淬硬能力和淬火变形开裂倾向，对提高零件质量有重要的实际意义。