Main Article Content
High-speed tool steels have special features such as high heat resistance, high rigidity, can conduct heat treatment in the wind and work at high speed without losing the features of the tools. High-speed tool steels are mainly use to manufacture cutting tools in mechanical processing up to 40% of the number of cutting tools. The article fully summarizes the types of high-speed steels are made in our country and in the world: symbols according to different standards, applications, chemical composition, mechanical properties after thermal treatment... The content of the article is a useful reference for students and researchers in the field of technical science.
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