P20钢与718钢切削加工共性研究  

Research on the machining similarity of steel P20 and 718

作　　者：林涵[1] 李东南[1] 徐西鹏[2] 

机构地区：[1]福建工程学院材料科学与工程系,福建福州350014 [2]华侨大学机电及自动化工程学院,福建泉州362011

出　　处：《福建工程学院学报》2008年第3期267-270,共4页Journal of Fujian University of Technology

基　　金：福建省青年人才创新项目(2006F3004)

摘　　要：从切削力、刀具磨损、表面粗糙度3方面进行实验研究，找出P20钢与718钢的切削共性，从而得到预硬型塑料模具钢的加工特性。结果表明，对主切削力影响较大的是切削深度和进给量；当切削速度超过80—90m／min时，表面粗糙度明显降低；与45钢相比，这类模具钢的刀具耐用度较差，且刀具主要磨损形态是磨料磨损。The cutting force, tool wear and surface roughness of steel P20 and 718 were studied to determine the machinability of prehardened plastic-mould steel. The results show that the main influential factors on the main cutting force are cutting depth and the amount of feed. The roughness of surface reduces obviously when the cutting velocity surpasses 80-90 m per minute. Compared with steel 45, the working life of the prehardened plastic-mould steel cutting tool is shorter, with the main wear form being grinding abrasion.

关 键 词：切削加工性 切削力 刀具磨损 预硬型塑料模具钢 

分 类 号：TG51[金属学及工艺—金属切削加工及机床]