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YB(T)1-80高碳铬轴承钢标准代替YB9-68以后,在执行中存在许多具体问题。冶金部和机械部于1983年9月签署了高碳铬轴承钢临时供货协议(YJZ)。YJZ81和YB(T)1-80相比较,非金属夹杂物的取样、检验、判定依据等规定没有任何变化,全部采用美国ASTM A295-70的规定。据调查,目前世界各国轴承钢标准都在向ASTM靠近。但在ASTM标准中关于非金属夹杂物的检验,还存在一些需待研究的问题。本文就我们在试行YB(T)1-80标准时存在的问题进行了归纳。
YB (T) 1-80 high-carbon chromium bearing steel standard instead of YB9-68, there are many specific issues in the implementation. Metallurgical Department and Machinery Department signed in September 1983 a high-carbon chromium bearing steel temporary supply agreement (YJZ). YJZ81 and YB (T) 1-80 compared to non-metallic inclusions sampling, testing, judging based on the provisions of no change, all the provisions of the United States ASTM A295-70. According to the survey, the world bearing steel standards are all approaching to ASTM. However, in the ASTM standard on the inspection of non-metallic inclusions, there are still some problems to be studied. This article summarizes the problems we have when trying out the YB (T) 1-80 standard.