介绍了硝盐淬火介质的特性和应用，硝盐含水量对冷却速度和冷却特性的影响，硝盐淬火介质的加水方法和水含量的检测，不同温度硝盐浴含水量随运行时间的变化，硝盐淬火后工件的清洗，清洗槽硝盐含量的变化和检测，使用硝盐淬火介质的环保问题和安全措施等。%The following points,including characteristics and applications of molten nitrate-nitrite quenchant , effect of water content in the molten nitrate-nitrite bath on its cooling rate,method of adding water to the molten nitrate-nitrite bath and detection of water content,variation of water content in the molten nitrate-nitrite bath at different temperatures with operational availability,washing of workpiece quenched in the molten nitrate-nitrite bath,change and detection of nitrate-nitrite content in the wash tank,environmental protection problem and safety precautions in the use of the molten nitrate-nitrite bath ,etc,were introduced.
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