超精细抛光处理对硬质合金铣刀耐磨性能的影响  

Effect of Micro Super-Fine-Polishing Treatment on Wear Performance of Cemented Carbide Milling Cutters

作　　者：史建猛 董卫萍 成书民 关艳英 刘珍 王俊斌 史海兰 刘道新[2] SHI Jianmeng;DONG Weiping;CHENG Shumin;GUAN Yanying;LIU Zhen;WANG Junbin;SHI Hailan;LIU Daoxin(AVIC Xi′an Aircraft Industry Group Company Ltd.,Xi'an 710089,China;College of Civil Aviation,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]中航西安飞机工业集团股份有限公司,西安710089 [2]西北工业大学民航学院,西安710072

出　　处：《机械工程材料》2022年第7期16-22,共7页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51771155)。

摘　　要：在硬质合金铣刀表面离子镀TiAlN涂层前后进行超精细抛光处理(MST),采用划痕试验、磨损量测定、粗糙度测试、形貌观察、成分分析等方法分析了MST对刀具磨损行为及磨损机理的影响。结果表明:在制备涂层后进行MST不会影响涂层的结合强度,并且可以降低刀具的表面粗糙度,从而减小切削阻力,因此MST刀具的耐磨性能明显优于未进行MST的刀具;先进行MST再制备涂层虽然也能降低刀具表面粗糙度,但是劣化了涂层的结合性能,影响了涂层对刀具的有效保护,因此MST刀具的耐磨性能劣于未进行MST的刀具;硬质合金刀具均发生黏着磨损和氧化磨损,制备涂层后进行MST可以抑制黏着磨损和氧化磨损。Micro super-fine-polishing treatment(MST) was conducted on cemented carbide milling cutters before and after surface ion-plating TiAlN coatings. The effect of MST on the wear behavior and wear mechanism of the cutters was analyzed by methods such as scratch tests, wear loss measurement, roughness testing, morphology observation and composition analysis. The results show that applying MST after plating did not affect the bond strength of the coating and could reduce the surface roughness of the cutter, thereby reducing the cutting resistance;so the wear resistance of the MST cutter was significantly better than that of the cutter without MST. Although applying MST first and then preparing the coating could reduce the surface roughness of the cutter, it deteriorated the bonding performance of the coating, thereby affecting the effective protection of the coating on the cutter;so the wear resistance of the MST cutter was poorer than that of the cutter without MST. The wear mechanisms of the cemented carbide cutters were adhesive wear and oxidative wear, and applying MST after plating could inhibit adhesive wear and oxidative wear.

关 键 词：硬质合金刀具 超精细抛光处理 TIALN涂层 刀具磨损 

分 类 号：TG714[金属学及工艺—刀具与模具]