摘要
为了改善金属表面的摩擦学特性,开发了研磨抛光微孔表面织构技术,研究了载荷、研磨颗粒粒径对表面织构参数(微孔表面密度、面积密度、孔径以及表面粗糙度等)的影响。结果表明:当载荷从0.007 3~0.023 2 MPa变化时,在相同的研磨时间周期内,单位面积微孔数量增多,微孔孔径增大,表面粗糙度也随之增加,微孔面积密度从5.51%增加至10.07%;当粒径从0.5~50μm变化时,单位面积微孔数量迅速减少,微孔孔径明显增大,表面粗糙度增加,而微孔面积密度则随着粒径的增加而下降,当磨粒粒径大于20μm时,研磨颗粒会对工件表面产生亚损伤。
A surface micro-pore texturing technology formed by grinding and polishing has been developed to improve the tribologieal properties on metal surface. The effect of load and size of abrasive particles on surface texturing parameters （micro pore density, area density, aperture and surface roughness） is researched. The results show the number of pores per unit area and the size increase during the same period as the load changes from 0.0073 MPa to 0.0232 MPa, resulting in consequential augment of the surface roughness. And the area density changes form 5.51% to 10.07%. While the aperture varies from 0.5 μm to 50 μm, the number of pores per unit area rapidly reduces but the diameter significantly increases, which leads to the surface roughness increasing. What＇s more, the area density decreases with the growth of particle size. However, during the grinding and polishing process the abrasive particles caused sub-damage to the metal surface when the size exceeds about 20 μm.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2017年第7期200-206,共7页
Journal of Mechanical Engineering
基金
河南省'百人计划'人才(豫人才办[2015]4号)
'智汇郑州.1125聚才计划'创业领军人才(2015YL006)资助项目
关键词
表面织构
微孔成型
面积密度
载荷
研磨颗粒粒径
surface texture
micro-pore formation
area density
load
size ofabrasiveparticle
