一、前言材料的可加工性是工艺性能中最重要的指标之一,它对劳动生产率及加工精度的提高起着直接影响:因此如何提高新材料可加工性的研究,就成为机械加工工业中的一个重要课题。钢材可加工性的主要指标是: (1)在一定的耐用度下,切削刀具所允许的切削速度V_(60)(刀具耐用度T=60分钟的切削速度); (2)切削过程所需的切削力、扭矩或功率; (3)加工表面质量及零件的尺寸精度; (4)切削过程中所形成切屑的形式(碎裂程 I. Foreword Machinability of materials is one of the most important indicators of process performance. It has a direct impact on the improvement of labor productivity and machining accuracy. Therefore, how to improve the processability of new materials has become a major challenge in the machining industry An important issue. The main indicators of steel machinability are: (1) The cutting speed V_ (60) of the cutting tool is allowed under a certain degree of durability (the cutting speed of the tool is T = the cutting speed of 60 minutes); (2) Of the cutting force, torque or power; (3) the machining surface quality and dimensional accuracy of the parts; (4) the form of chips formed during the cutting process