纳米hBN对硬质合金刀具干切削加工316不锈钢的影响  

Effect of Nano hBN on Cutting Performance of Cemented Carbide Tools in Dry Cutting of Stainless Steel 316

作　　者：王涛 衣明东[2,3] Wang Tao;Yi Mingdong(Shandong Yellow River Reconnaissance Design&Research Institute,Jinan 250013,China;School of Mechanical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]山东黄河勘测设计研究院有限公司 [2]齐鲁工业大学(山东省科学院)机械工程学院 [3]山东省机械设计研究院

出　　处：《工具技术》2023年第11期35-39,共5页Tool Engineering

基　　金：国家自然科学基金(51905285);山东省科技型中小企业创新能力提升工程(2022TSGC1195)。

摘　　要：为了解决硬质合金刀具切削316不锈钢时切削力过大和切削温度过高的问题,采用真空热压烧结技术研制了以纳米六方氮化硼(hBN)为添加相的自润滑硬质合金刀具,并研究其干切削316不锈钢的切削性能。数据表明,当添加5vol.%的纳米hBN时,硬质合金刀具的断裂韧性提高了34.3%。在相同条件下,纳米六方氮化硼刀具的切削力和切削温度显著降低。此外,前刀面的平均摩擦系数和后刀面的磨损量减小,刀具的减摩性能提高,从而延长了刀具的使用寿命。In order to solve the problem related to the extreme cutting force and the high cutting temperature,when cutting stainless steel 316 with cemented carbide tools,the self-lubricating cemented carbide tool with nano hexagonal boron nitride(hBN)as additive phase is developed using vacuum hot pressing sintering technology,and its cutting performance in dry cutting of stainless steel 316 is studied.The data show that the fracture toughness of cemented carbide tools increases by 34.3%when adding 5vol.%of nano hBN.Under the same conditions,the cutting force,as well as the cutting temperature of the tool with nano hBN,decrease significantly.Moreover,the average friction coefficient of the rake face and wear of the flank face diminish and antifriction performance of the tool improves,which prolongs its life.

关 键 词：硬质合金刀具 自润滑 纳米hBN 力学性能 切削性能 

分 类 号：TG71[金属学及工艺—刀具与模具] TH162.1[机械工程—机械制造及自动化]