三维微坑织构刀具耐磨损性能研究  

Study on Wear Resistance of Three-Dimensional Micro-Texture Tool

作　　者：潘有崇[1] 曹春宜 冯洋[2] PAN You-chong1,CAO Chun-yi1,FENG Yang2(1.Research Department of Jiangxi Metallurgical Vocational and Technical College,Jiangxi Xinyu 338015, China; 2.Schoo1 of Mechanical and Dynamic Engineering,Shanghai Jiaotong University,Shanghai 200240, Chin)

机构地区：[1]江西冶金职业技术学院科研处,江西新余338015 [2]上海交通大学机械与动力工程学院,上海200240

出　　处：《机械设计与制造》2018年第8期206-208,211,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(81071234)

摘　　要：采用激光加工技术,在硬质合金刀具的前刀面制备出直径为35μm、30μm、25μm、20μm的微坑阵列,分析激光功率、打标速度、打标次数对微织构形貌和质量的影响;通过正交切削试验对比微坑阵列刀具和无织构刀具的耐磨损性能,从刀具磨损长度、宽度、工件表面粗糙度、切屑的黏刀量等进行评价。结果表面:通过合理的控制激光加工过程中激光功率、打标速度、打标次数来制备出符合要求的微织构形貌;微坑直径的大小对刀具的耐磨损性能有一定的影响,随着微坑直径的不断减小刀具的耐磨损性能有一定的提高,Ti6Al4V合金表面粗糙度不断减小;当直径小于25μm时,刀具的耐磨损性不断减弱,Ti6Al4V合金表面粗糙度不断增加;微坑织构对于刀-屑摩擦接触状态、抗黏附、耐磨减阻、存储切屑等方面有着积极的作用。Using the laser processing technology,the micro-pit arrays with diameter of 35μm,30μm,25μm and 20μm were machined on the rake face of the cemented carbide tool. The effects of laser power,marking speed and marking times on micro-texture morphology and quality were analyzed.The wear resistance of micro-pits array tool and untexture tool was compared by orthogonal cutting test,the tool wear length,width,workpiece surface roughness,and amount of cutter sticking were evaluated.Results： the surface by controlling laser power,marking speed and marking times of preparation to meet the requirements of micro-texture appearance.The diameter of the micro-pits has an influence on the wear resistance of the tool.With decrease of micro-pit diameter,the wear resistance has been improved,the surface roughness of Ti6 Al4 V alloy has been decreasing;When the diameter is less than 25μm,the wear resistance of the tool is decreasing,and surface roughness of Ti6 Al4 V alloy is increasing;Micro-pit texture plays an active role in the friction contact state between tool and chip,adhesion resistance,wear resistance,resistance reduction,storage chip and so on.

关 键 词：微坑织构 正交切削试验 微坑直径 表面粗糙度 

分 类 号：TH16[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]