高速磨削用单层钎焊CBN砂轮及其磨削性能  

Development and Performance of Brazed CBN Wheel for High Speed Grinding

作　　者：李奇林[1] 徐九华[2] 苏宏华[2] 丁凯[1] 雷卫宁[1] 

机构地区：[1]江苏理工学院 [2]南京航空航天大学

出　　处：《工具技术》2016年第10期15-18,共4页Tool Engineering

基　　金：国家自然科学基金(51275231);江苏省高校自然科学研究项目(14KJB460011;15KJB460010)

摘　　要：针对钎焊砂轮存在的热变形导致精度降低的问题,提出基于局部加热的超高频感应钎焊工艺方法制备高速磨削用单层钎焊CBN砂轮,采用三坐标测量仪对砂轮及其钎焊前后的尺寸进行测量,最后对该砂轮高速磨削镍基高温合金磨削性能进行评价。三坐标测量结果显示,钎焊CBN砂轮基体的变形量小于16μm,在高速重负磨削镍基高温合金试验中,加工表面未见裂纹和烧伤,表面粗糙度可达Ra0.4μm,砂轮表现为正常磨耗磨损。表明超高频感应钎焊工艺制备的单层钎焊砂轮在高速磨削具有应用潜力。To solve the problem of the low accuracy of the brazed wheel induced by thermal deformation, the local heating based ultra-high frequency induction brazing technology was proposed to develop the monolayer brazed CBN wheel for high-speed grinding. The dimension of the brazed wheel was investigated by coordinating measuring machine. High-speed grinding tests of nickel-based super alloy were conducted to explore the performance the newly developed CBN wheel. The results revealed that the deformation of the brazed CBN wheel was less than 16μm. The ground surface roughness of nickel-based superalloy reached Ra 0.4μm under high-speed heavy-load grinding condition. No cracks and burn were observed. The results implied that the ultra-high frequency induction brazed wheel had great potential application in high-speed grinding.

关 键 词：钎焊砂轮 CBN 高速磨削 高温合金 

分 类 号：TG74[金属学及工艺—刀具与模具] TG58