激光织构化DLC/TiAlN复合涂层刀具切削性能研究  

Study on cutting performance of DLC/TiAlN composite coated tools with liquid-phase-assisted laser textures

作　　者：李海山 姜明晶 张闯 殷俊豪 张克栋 LI Haishan;JIANG Mingjing;ZHANG Chuang;YIN Junhao;ZHANG Kedong(School of Mechanical and Electrical Engineering,Soochow University,Suzhou 215131,China)

机构地区：[1]苏州大学机电工程学院,苏州215131

出　　处：《现代制造工程》2025年第3期1-8,30,共9页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(52375197);江苏省研究生科研创新计划项目(SJCX24_1813);苏州大学大学生课外学术科研基金项目(KY20220091A,KY2024182B)。

摘　　要：为实现难加工材料的高性能干切削,将高硬度和高结合强度的TiAlN作为支撑层,以具有自润滑特性的DLC涂层作为功能顶层,制备出兼具减摩性与耐磨性的DLC/TiAlN复合涂层刀具,并在DLC/TiAlN界面间进行液相辅助激光织构化处理,以增强层间结合强度。利用干切削316不锈钢试验,研究了仅TiAlN涂层(NC)的刀具、未处理的DLC/TiAlN复合涂层(UC)刀具、空气下激光处理的DLC/TiAlN复合涂层(AC)刀具和液相辅助激光处理的DLC/TiAlN复合涂层(LC)刀具4种刀具在不同切削参数下干切削不锈钢时切削力/热、切屑形态、涂层剥落和刀具黏结等切削性能。结果表明,相比于NC刀具,UC、AC和LC刀具的切削力得到了不同程度的降低。当切削速度为200 m/min时,LC刀具的总切削力最低,降低了26.5%,同时,LC刀具的前刀面磨损最为轻微,涂层完整性最好。In order to achieve high performance dry cutting of difficult-to-machine materials,the DLC/TiAlN composite coating tool with both antifriction and wear resistance was prepared by using TiAlN with high hardness and high bonding strength as the support layer and DLC coating with self-lubricating properties as the top layer.At the DLC/TiAlN interface,liquid-phase assisted laser texturing was performed to enhance the interlayer bonding strength.Using dry cutting 316 stainless steel test,4 kinds of cutting tools,including TiAlN coated(NC)tool,untreated DLC/TiAlN composite coating(UC)tool,air laser treated DLC/TiAlN composite coating(AC)tool and liquid phase assisted laser treated DLC/TiAlN composite coating(LC)tool,were used to study cutting properties such as force/heat,chip morphology,coating peeling,tool bonding etc,when dry cutting stainless steel under different cutting parameters.The test results showed that the cutting forces of UC,AC and LC tools were reduced in different degrees compared with NC tools.When the cutting speed is 200 m/min,the total cutting force of LC tool was the lowest,which was reduced by 26.5%.At the same time,the front and back tool face wear of LC tool was the least,and the coating integrity was the best.

关 键 词：DLC/TiAlN涂层 液相辅助 激光处理 切削性能 

分 类 号：TG713[金属学及工艺—刀具与模具] TH117.1[机械工程—机械设计及理论]