刀具温度分布与组织结构的关系

The Relation between Temperature Distribution of Cutting Tool and Its Microstructure

本文研究了ASP30粉末冶金高速钢车刀重加热后的显微组织和显微硬度的变化规律。用来评定高速钢刀的温度分布。实验证明,具有直观、精密方便等特点,在相同切削条件下,粉末高速钢刀与普通高速钢刀有相似的温度-组织效应。

In relation to the ASP 30 grade powder metallurgical high speed steel cutting tool, this paper deals with the changing pattern of its microstructure and microhardness after reheating. This changing pattern is proven experimen- tally to be a precise, convenient and intuitive criterion for evaluating temperature distribution of HSS cutting tool. Both powder metallurgical and conventional HSS cutting tools have the similar temperature structure effects when they are used under similar conditions.