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“金属表面快速硬化处理新工艺”一文(载《机械制造》1984年第9期)发表以后,我们陆续收到从编辑部转来数十封来信,询问有关技术问题,现作说明如下。机械工业部召开的机械工业第三次工艺工作会议明确指出,工艺的基本问题是我国工艺水平低。特别在热处理方面,目前国际上可控保护气氛的应用已达到40％,而我国仅为1％。精加工后的工件经过常规淬火热处理后,精度降低1～2级,如采用可控保护气氛热处理则可保持原有尺寸精度,相对来说即提高零件精度1～2级,提高了产品质量,减少加工步骤,
After the publication of the “New Process for Rapid Hardening of Metal Surfaces” (contained in Mechanical Manufacturing, Issue 9, 1984), we have received dozens of letters from editorial departments to ask technical questions. Machinery Industry Ministry convened the third session of the work process clearly pointed out that the basic problem of the process is the low level of our technology. Especially in the heat treatment, the current controllable atmosphere of the international application has reached 40%, while China is only 1%. Precision after the workpiece quenched by conventional quenching, the accuracy of reduced 1 to 2, such as the use of controlled atmosphere heat treatment can maintain the original dimensional accuracy, relatively speaking, improve the accuracy of parts 1 to 2, improve product quality, Reduce processing steps,