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一、引言我们看了机车车辆工艺1964年第4、6、7期“低碳钢热处理”一文后,在若干方面有一些不同看法,特提出来与作者商榷。论文说,“用现有的金属学理论对低碳铸钢的显微组织及其对机械性能的关系不能作出满意的说明,现有的文献都没有阐明Π网及α针的理论及其对机械性能的影响,因此现有的金属学理论不能适应我厂低碳铸钢件的生产需要”。同时论文还指出,“В.Д.садов-
I. INTRODUCTION After reading the articles 4, 6 and 7 of 1964, ”Low-carbon steel heat treatment“, the locomotive and rolling stock technology has some different opinions in several aspects, especially to discuss with the author. The paper states that ”the existing theories of metallurgy can not provide satisfactory explanations for the microstructure of low-carbon cast steel and its relationship to mechanical properties. The existing literature does not clarify the theory of Π-net and α-stitches and their On the mechanical properties, so the existing metal theory can not meet the production needs of our factory low-carbon steel castings “. At the same time the paper also pointed out that ”В.Д.садов-