PCBN刀具以车代磨加工20CrMnTi合金钢试验研究  

Experimental Study on Cutting 20CrMnTi Alloy Steel with PCBN Tool by Turning Instead of Grinding

作　　者：苏君[1] 冯佩佩 SU Jun;FENG Peipei(Henan Polytechnic Institute,Nanyang 473000,Henan,China)

机构地区：[1]河南工业职业技术学院,河南南阳473000

出　　处：《矿冶工程》2023年第4期154-157,163,共5页Mining and Metallurgical Engineering

基　　金：2018年河南省科技发展计划(182102210266);2021年河南省科技攻关计划项目(212102210372)。

摘　　要：采用聚晶立方氮化硼(PCBN)刀具,以车代磨对20CrMnTi合金钢进行精密切削加工。分析了切削过程中PCBN刀具的磨损形式和磨损机理,研究了不同切削参数对刀具寿命与工件表面粗糙度的影响。结果表明,切削过程中刀具发生了扩散、崩刃以及氧化磨损;在硬态切削三要素中,切削进给量和切削速度对刀具磨损量影响较大,切削进给量对工件表面粗糙度影响较大。20CrMnTi alloy steel was precisely cut by turning instead of grinding using a polycrystalline cubic boron nitride(PCBN)tool.Based on analysis of the form and mechanism of PCBN tool wear during the cutting process,the influences of different cutting parameters on tool life and surface roughness of workpiece were studied.The results show that the tool is subjected to diffusion,chipping and severe oxidative wear.Among those three elements of hard material cutting,both feed rate and cutting speed bring great influence to tool wear,and feed rate has great influence on the surface roughness of machined workpiece.

关 键 词：超硬刀具 PCBN刀具 切削 20CrMnTi 以车代磨 

分 类 号：TG712[金属学及工艺—刀具与模具] TB34[一般工业技术—材料科学与工程]