弹性磨粒喷砂刃口钝化工艺研究  

Elastic Abrasive Blasting for Cutting Edge Preparation

作　　者：李铸宇 任泊铭 黄升莉 薛倩 付连宇 Li Zhuyu;Ren Boming;Huang Shengli;Xue Qian;Fu Lianyu(不详;Jinzhou Precision Technology(Kunshan)Co.,Ltd.,Kunshan,Jiangsu 215345,China)

机构地区：[1]金洲精工科技(昆山)有限公司,江苏省昆山市215345 [2]深圳市金洲精工科技股份有限公司

出　　处：《工具技术》2023年第12期43-47,共5页Tool Engineering

基　　金：昆山市双创人才计划—创新领军人才(kssc202101087);国家重点研发计划(2022YFB3806703);中国五矿集团科技专项(2022ZXA03)。

摘　　要：利用含金刚石和碳化硅磨料的橡胶颗粒喷射刃口是硬质合金刀具刃口钝化的一种新工艺。对喷砂压强、喷砂时间和正反转时间比等参数对刃口钝化量的影响展开研究,结果表明,钝化时间在20s内,钝化半径随钝化时间呈线性增大;形状因子K受正反转时间比影响较大;喷砂钝化后刀具刃口附近表面质量明显提高,粗糙度值降低1/2;比较喷砂钝化和拖拽钝化后的铣刀加工1Cr18Ni9Ti的耐用度,相同切削条件下,后者的磨损量是前者的2倍。Elastic abrasive blasting is a new and effective preparation of cutting edge for cemented carbide tools.Abrasive particles are composed of rubber particles with embedded diamond and SiC grains.The effect of various blasting conditions,such as blasting pressure,duration and positive inversion time ratio,on the prepared radius of cutting edge is examined.The results show that prepared radius increases linearly with the blasting time within 20s.The shape factor K is greatly affected by the positive inversion time ratio.After abrasive blasting,the surface quality near the tool edge is significantly improved,and the roughness value decreased by one-fold.After milling 1Cr18Ni9Ti stainless steel with the same cutting condition,the wear of flank face on drag finishing endmill is twice as that of abrasive blasting one.

关 键 词：弹性磨料 喷砂 立铣刀 刃口钝化 

分 类 号：TG711[金属学及工艺—刀具与模具] TH117.1[机械工程—机械设计及理论]