本文主要介绍了苏联、西德、英国、日本以及美国等国家有关高速钢碳化物偏析的评级标准图片,可供有关同志对比参考。——编者高速钢中含有将近四分之一的碳化物形成元素 This article mainly introduces the rating standards pictures of high speed steel carbides segregation in the countries such as the Soviet Union, West Germany, Britain, Japan and the United States, which can be compared and referenced by the comrades concerned. - Editor HSS contains nearly a quarter of carbide-forming elements