摘要
TC4钛合金是典型的难加工材料,在传统加工中存在难切削、工件表面易烧伤等问题。采用自行设计的球形固结磨料磨头开展TC4钛合金研磨实验,探索不同粒径、磨料种类及研磨工艺参数对TC4钛合金研磨材料去除率及表面质量的影响,分析研磨的材料去除机理,优化研磨工艺。发现20~30μm碳化硅磨粒的研磨效果最佳,优化后的工艺方案为磨头转速2000r/min,研磨夹角30°,研磨时间10s。在此工艺参数下研磨材料去除率为22.2mg/min,工件表面粗糙度Ra值为0.7μm,兼顾了对材料去除效率和表面质量的要求。
TC4 titanium alloy is a typical difficult-to-process material,which has problems such as difficult cutting and easy surface burn.The lapping experiments of TC4 Ti alloy were carried out using self-designed spherical fixed abrasive head as the lapping tool.In order to optimize the lapping process,the effect of different abrasives and lapping processes on material removal rate and surface quality of TC4 titanium alloy were investigated,and the mechanism of material removal was analyzed.The abrasive of 20 to 30 μm SiC is found to has the best lapping effect,and the optimal processes are lapping speed 2 000 r/min,lapping angle 30°,lapping time 10 s.Under the conditions,the material removal rate is 22.2 mg/min and surface roughness R a is 0.7 μm.The requirements on both material removal efficiency and surface quality are satisified.
作者
王健杰
李军
黄俊阳
明舜
朱永伟
左敦稳
WANG Jianjie;LI Jun;HUANG Junyang;MING Shun;ZHU Yongwei;ZUO Dunwen(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2019年第3期23-28,共6页
Diamond & Abrasives Engineering
基金
江苏省自然科学基金资助项目(BK20181294)
大连理工大学精密与特种加工教育部重点实验室研究基金资助项目(JMTZ201801)
关键词
固结磨料研磨
球形磨头
钛合金
材料去除率
表面粗糙度
fixed abrasive lapping
spherical lapping head
titanium alloy
material removal rate
surface roughness
