In order to improve the wear resistance of special steel surface of KDCMSV shield hob,its ordi-nary texture surface was laser quenched in this paper.The microstructure was observed by metallographic microscope and the microhardness was measured by Vickers hardness tester.The friction and wear tests of untreated surface,ordinary textured surface and laser quenched textured surface were carried out by high speed and high temperature friction and wear tester under magnetic field environment and ordinary envi-ronment respectively.The wear marks and wear morphology were observed and analyzed by laser confocal microscope.The results show that when the magnetic field strength is 7mt,the antifriction effect of special steel surface of different shield hobs is different,and the antifriction effect of ordinary texture surface is the best.The application of magnetic field dry friction technology in special steel of shield hob is helpful to improve the wear resistance of its surface.
关键词
激光淬火/盾构滚刀特种钢/织构/摩擦磨损/磁场环境
Key words
laser quenching/special steel for shield hob/texture/wear/magnetic field
维普
万方数据