超音速火焰喷涂WC-Co涂层超高速磨削试验研究  

Experimental Research on HVOF Sprayed WC-Co Coating at Super High Speed Grinding

作　　者：郭力[1] 易军[1] 盛晓敏[1] 

机构地区：[1]湖南大学机械与运载工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2012年第9期23-27,共5页Journal of Hunan University:Natural Sciences

基　　金：国家科技重大专项资助项目(2011ZX04014-021;2011ZX04015-041)

摘　　要：为了解决超音速火焰喷涂WC涂层硬度高难以加工的问题,进行了超音速火焰喷涂WC涂层的超高速磨削试验,测量了不同磨削条件下的磨削力、表面粗糙度,观察了不同磨削条件下工件的表面微观形貌.结果表明,随着砂轮线速度的大幅度提高,即在高速超高速磨削条件下,涂层的磨削力、表面粗糙度都能得到明显的降低;同时涂层材料的去除方式更多的以塑性去除为主.总之在超高速磨削条件下,涂层工件的表面质量和磨削加工效率和砂轮的使用寿命都有明显提高。In order to solve the problem that it is hard to process the HVOF tungsten carbide coatings, super high speed grinding experiments were carried out. The grinding forces and the surface roughness were measured, and the surface microstructure was observed under different grinding conditions. The re- suits have shown that, with the substantial increase in wheel speeds, the grinding forces and surface roughness can be significantly reduced. Under the conditions of super high speed grinding, the plastic gives priority to the coating material removal way. In a word, under the conditions of super high speed grinding, the surface quality and the grinding efficiency and service life of the grinding wheel in coating workpiece grinding have been obviously improved.

关 键 词：高硬度涂层 超高速磨削 磨削力 表面粗糙度 表面微观形貌 

分 类 号：TH163[机械工程—机械制造及自动化]