论文部分内容阅读
防止高速钢刀具淬火时的变形和提高刀具的切削性能,是一个很重要的问题。[图一]为18/4/1高速钢(相当于苏联的P18高速钢和我国的18高速钢)奥斯田体等温转变图。很明显地由图可见,奥斯田体的等温转变可分为三个区域:波来体区、本耐体(Bainite)区、和麻顿赛体区。波来体和本耐体区间有一个奥斯田体最稳定的区域。现行的高速钢热处理规范中,广泛地采用了分级淬火法;即将刀具从淬火加热温度淬入450～
It is an important issue to prevent the deformation of HSS tool during quenching and improve the cutting performance of the tool. Fig. 1 is the isothermal transformation diagram of the Oss field for 18/4/1 high-speed steel (equivalent to P18 high-speed steel in the Soviet Union and 18 high-speed steel in China). It is clear from the figure that the isothermal transformation of the otos field can be divided into three regions: the wave body region, the Bainite region, and the Mamton region. The wave body and the resistance interval has a most stable area of the Otis field. The current high-speed steel heat treatment specifications, the widely used classification quenching method; about the tool quenching temperature quenching 450 ~