调质是很重要的预先热处理工序,它对零件的性能和使用寿命影响很大。但在生产中其重要性往往被忽视。上海市拖拉机汽车公司最近对协作加工的热处理零件进行了质量检查,发现绝大多数在郊县加工的调质件都达不到要求。其中有操作问题,也有设计(材料选用)问题,但最根本的还是思想上不重视所引起。为此本刊组织了这篇稿件,供有关人员参考。 Quenching is a very important pre-heat treatment process, which has a significant impact on the part’s performance and service life. But their importance in production is often overlooked. Shanghai Tractor Motor Co. recently conducted a quality inspection of the co-processed heat-treated parts and found that most of the quenched and tempered parts processed in suburban areas failed to meet the requirements. There are operational problems, there are also design (material selection), but the most fundamental or ideological attention caused. To this end, this publication has organized this manuscript for the reference of relevant personnel.