铸铁切削用PCBN刀具材料的合成与性能研究  

Synthesis and properties of PCBN tool materials for cast iron cutting

作　　者：刘仕昌 康睿超 陈国良 LIU Shichang;KANG Ruichao;CHEN Guoliang(Department of Electrical and Mechanical Engineering,Yichun Early Childhood Teachers College,Yichun 336000,China;School of Mechanical Engineering,Shandong University of Technology,Zibo 255000,China;Shandong Yaohua Tenai Technology Co.,LTD.,Binzhou 256619,China)

机构地区：[1]宜春幼儿师范高等专科学校,江西宜春336000 [2]山东理工大学机械工程学院,山东淄博255000 [3]山东耀华特耐科技有限公司,山东滨州256619

出　　处：《粉末冶金工业》2023年第5期63-68,共6页Powder Metallurgy Industry

基　　金：国家自然科学基金面上项目(52075306);江西省教育厅科研项目(GJJ213704)。

摘　　要：以CBN,Al,Co为实验原料,经高温真空处理后,在六面顶压机上合成了铸铁切削用PCBN(聚晶立方氮化硼)刀具材料,研究了PCBN结合剂中Al-Co的质量配比对PCBN刀具材料的合成及相关性能的影响规律,以期得到性能优良的PCBN刀具材料。通过对PCBN的物相组成、显微硬度、致密度、微观形貌以及切削性能的分析,发现当Al-Co含量为8%时,样品的硬度与磨耗比最高,分别为35.72 GPa和7560,当Al-Co含量10%时,获得相对密度和机械强度最好的PCBN刀具材料,分别为99.2%和882.5 MPa,当Al-Co含量为8%和6%时样品的切削性能相对较好。综合分析,当Al-Co含量为8%时可获得综合性能最佳的PCBN刀具材料。Using CBN,Al,and Co as experimental materials,PCBN(Polycrystalline Cubic Boron Nitride)cutting tool materials were synthesized on a six-sided press under high temperature and vacuum treatment.The effect of the AI-Co mass ratio in the PCBN binder on the synthesis and related properties of PCBN cutting tool materials was studied in order to obtain high-performance PCBN cutting tool materials.Through analysis of the phase composition,microhardness,density,microstructure,and cutting performance of PCBN,it was found that the hardness and wear ratio of the sample were highest at an Al-Co content of 8%,measuring 35.72 GPa and 7,560,respectively.At an Al-Co content of 10%,the PCBN cutting tool material exhibited the best relative density and mechanical strength,measuring 99.2%and 882.5 MPa,respectively.Additionally,the cutting performance of the samples was relatively good at an Al-Co content of 8%and 6%.Overall,a PCBN cutting tool material with optimal comprehensive performance can be obtained when the Al-Co content is 8%.

关 键 词：PCBN刀具 材料 高温超高压 铸铁 切削 

分 类 号：TG711[金属学及工艺—刀具与模具]