铸钢表面铸渗WC颗粒材料界面与磨损性能的研究  

Study on Interface and Wear Properties of a Cast Steel Material with WC Particles Cast-penetrating on the Surface

作　　者：田迎春 高平 张鸣一 耿文远 TIAN Yingehun;GAO Ping;ZHANG Mingyi;GENG Wenyuan(Inner Mongolia institute of metal materials, Baotou 014034, China)

机构地区：[1]内蒙金属材料研究所,内蒙古包头014034

出　　处：《铸造技术》2018年第6期1173-1176,共4页Foundry Technology

摘　　要：研究了一种以中碳低合金钢作为基体材料,借鉴颗粒增强钢基表面复合材料铸渗技术,结合消失模铸造技术,并在其表面进行颗粒增强相铸渗的材料。通过研究颗粒预制体骨架材料与成型工艺,制备高耐磨颗粒增强铸渗锤头,其特征为具有一定厚度及颗粒分散度的铸渗层。试验样块铸渗增强相颗粒层达到7~10 mm;热处理后,颗粒增强层表面基体平均硬度为581.3 HV,颗粒平均硬度为1 890.6 HV。磨损试验结果表明,3种材料耐磨性大小依次为铸渗颗粒层高铬铸铁试验钢(不含颗粒),且铸渗颗粒增强层的静摩擦磨损性能理论上为试验高铬铸铁的7~8倍。A kind of steel which has medium carbon and low alloy as the substrate materials, for reference Of particle reinforced surface composite casting technology, combined with the EPC casting technology, the materials of particle strengthening phase casting were carried out on its surface. The high wear-resisting and cast-penetrated the hammer head was prepared by studying the particle precast skeleton materials and the casting process, and which were characterized by a cast-penetrated layer with certain thickness and particle dispersion. The layer of test specimens of cast-penetrated particles reaches 710 mm; the average microhardness of matrix on the hard particle layer surface is HV 581.3, and the average microhardness of the particles is HV1 890.6 after heat treatment. The Wear test results show that the wear resistance of the three materials is the cast-penetrated layer, the high chromium cast iron, and testing steel （no particle）, the static friction and wear performance of the casting particle reinforced layer is theoretically 7 to 8 times higher than that of high chromium cast iron.

关 键 词：中碳低合金钢 颗粒 铸渗 界面磨损 

分 类 号：TG113[金属学及工艺—物理冶金] TG174[金属学及工艺—金属学]