摘要
进行了单颗磨粒高速磨削 4 5钢、2 0Cr钢和典型难磨材料钛合金TC4和GH4 16 9高温合金的试验·试验结果表明 ,对于 4 5钢和 2 0Cr钢 ,高速条件下单颗磨粒磨削的比磨削能显著低于比熔化能·发现了国外一些学者提出的钢铁材料的最低比磨削能约束于材料比熔化能假设的例外·高速磨削四种材料均表现出尺寸效应·采用高速磨削 ,对改善磨粒的切削状态 ,降低比磨削能是非常有利的·在磨削钛合金TC4和高温合金GH4 16 9时 ,易发生金属粘附·锆刚玉磨削钛合金TC4比磨削高温合金GH4 16 9的粘附严重·高速下金属粘附作用减轻·
High speed single grain grinding tests were carried out for 45 steel, 20Cr alloy, TC4 titanium alloy and GH4169 superalloy. The minimum specific grinding energy at high speeds is much lower than the specific melting energy of steels for single grain grinding of 45 steel and 20Cr alloy. This is an exception of the assumption that the minimum grinding energy restrains to the melting energy of steels. The high speed grinding of all those four materials presents the size effect. The high speed grinding mode may improve the cutting condition of the grains and thus reduce the specific grinding energy. The metal adhesion occurs easily for grinding TC4 titanium alloy and GH4169 superalloy. The metal adhesion occurs easily for grinding TC4 with corundum(10%～15%ZrO 2) is more serious than that for grinding GH4169. The high grinding speeds can reduce the metal adhesion on grains.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第5期470-473,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目 (5 9675 0 61) .
关键词
单颗磨粒
磨削机理
微切削
难磨材料
比磨削力
尺寸效应
金属粘附
高速磨削
single grain grinding
micromachining
difficult to grind materials
specific grinding force
size effect
metal adhesion
