复合纳米自润滑金刚石砂轮磨削SiC陶瓷的试验研究  

Experimental Research on Grinding of SiC Ceramics by Composite Nanometer Self-lubricating Diamond Grinding Wheel

作　　者：汤熊[1] 张松辉 张晓红[2] 李伟[3] 郭兵[4] TANG Xiong;ZHANG Songhui;ZHANG Xiaohong;LI Wei;GUO Bing(School of Mechanical and Electrical Engineering,Yueyang Vocational Technology College,Yueyang 414000;College of Mechanical Engineering,Hunan Institute of Science and Technology,Yueyang 414006;College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082;School of Mechanical Engineering,Harbin Institute of Technology,Harbin 150001)

机构地区：[1]岳阳职业技术学院机电工程学院,岳阳414000 [2]湖南理工学院机械工程学院,岳阳414006 [3]湖南大学机械与运载工程学院,长沙410082 [4]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《宇航材料工艺》2024年第1期56-66,共11页Aerospace Materials & Technology

基　　金：国家重点研发计划(2018YFB2001400);国家自然科学基金项目(51875200);湖南省自然科学杰出青年基金项目(2021JJ10031);湖南省教育厅项目(18C1773)。

摘　　要：提出一种复合纳米自润滑金刚石砂轮的制备方法,并对制备的砂轮进行SiC陶瓷的磨削试验,分析砂轮表面不同质量分数的复合纳米颗粒对磨削性能的影响。使用MoS2、TiO2纳米颗粒作为自润滑砂轮基底的填充材料,采用复合纳米自润滑金刚石砂轮和传统金刚石砂轮进行磨削对比试验,研究复合纳米自润滑金刚石砂轮的润滑机制。研究结果表明,复合纳米自润滑金刚石砂轮自释放的纳米颗粒有效地参与了磨削区间的润滑,砂轮的法相力、切向力降低,提升了工件表面质量。在磨削深度为2~8μm内,复合纳米自润滑金刚石砂轮的具体表现为法向磨削力降低18.6%~38.7%、切向磨削力降低11.2%~28.6%,工件表面粗糙度降低13.9%~41.5%。根据本试验所得数据,当砂轮表面复合纳米颗粒质量分数为8%时,润滑性能和工件表面质量最佳。This paper proposed to prepare a composite nanometer self-lubricating diamond grinding wheel,and conducted a grinding test of SiC ceramics,and analyzed the influnence of the composite nanometer self-lubricating diamond grinding wheel with different mass fractions of composite nanoparticle on grinding performance.In this paper,nano-MoS2,TiO2 particles were selected as the filling materials,and a composite nano self-lubricating diamond grinding wheel and a traditional grinding wheel were used for comparison grinding experiments.At the same time,the lubrication mechanism of the composite nano-self-lubricating diamond grinding wheel was studied.The results show that the self-released nanoparticles of the grinding wheel effectively participate in the lubrication of the grinding area,reduce the normal and tangential force on the grinding wheel,and improve the surface quality of the workpiece.In the grinding depth of 2-8μm,the specific performance is that the normal and tangential grinding forces of the composite nano self-lubricating diamond grinding wheel are effectively reduced by 18.6%-38.7%,11.2%-28.6%,and the surface roughness is reduced by 13.9%-41.5%.When the mass fracture of composite nanoparticles is 8%,the performance and surface quality of the workpiece are the best.

关 键 词：纳米颗粒 自润滑 磨削力 表面质量 砂轮磨损 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]