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钢的火焰淬火和感应淬火是热处理中常见的表面淬火方法。国内对表面淬火件硬化层深度的测定正在拟定部颁标准。所以,现国内各厂对图纸上硬化层深度的解释其说不一,有的说是全硬化层,有的说是有效硬化层。而对有效硬化层硬度如何计算和确定,各厂更是不一致。这种情况,对热处理质量评价是非常不方便的。国际标准ISO3754、联邦德国标准DIN50190第二
Steel flame quenching and induction hardening is a common surface heat treatment method of quenching. Domestic hardened surface hardening depth determination is preparing ministerial standards. Therefore, the domestic factories on the drawings on the depth of the hardened layer of explanation vary, and some said that the hardened layer, and some said that the effective hardened layer. How to calculate and determine the hardness of the effective hardened layer, the plants are even more inconsistent. This situation, the quality of heat treatment is very inconvenient. International standard ISO3754, Federal German standard DIN50190 second