陶瓷结合剂CBN砂轮高速磨削钛合金TC4-DT  

High speed grinding TC4-DT alloy with vitrified CBN wheel

作　　者：胥军[1] 卢文壮[1] 王晗[1] 朱延松[1] 黄群超[1] 左敦稳[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《金刚石与磨料磨具工程》2013年第5期12-16,21,共6页Diamond & Abrasives Engineering

基　　金：国家自然基金(51275230);江苏省普通高校研究生科研创新计划资助项(CXZZ12_0142)

摘　　要：针对钛合金磨削温度高、磨削表面质量难以控制等特性,采用陶瓷结合剂CBN砂轮开展了TC4-DT钛合金高速磨削实验研究,研究了磨削用量对磨削温度、磨削力和磨削表面形态影响规律及机制。结果表明:砂轮线速度和磨削深度对钛合金TC4-DT磨削力、磨削温度及表面粗糙度影响最为显著,而工作台速度对其影响不明显。砂轮线速度在60~80 m/s时,磨削温度较低,磨削表面质量良好;而砂轮线速度达100 m/s后,磨削温度急剧上升,磨削表面出现斑状涂覆物、微裂纹等热损失缺陷。选择合理高速磨削工艺可获得良好磨削表面质量并提高加工效率。Titanium alloy is a kind of difficult-to-grind material. High speed grinding experiment of TC4-DT alloy was done with vitrified CBN wheel to investigate the influence of grinding parameters on the grinding force, temperature and surface feature. The results showed that grinding speed and depth had the most significant influence on the grinding force,temperature and surface roughness. When the grinding speed ranged from 60 m /s to 80 m / s,low grinding temperature with good quality surface could be obtained. Porphyritic coating and micro crack appeared because of high grinding temperature when the grinding speed was 100 m / s and 120 m / s. It was shown that high grinding efficiency and good quality ground surface could be obtained with reasonable parameters.

关 键 词：钛合金TC4-DT CBN砂轮 高速磨削 

分 类 号：TG580.6[金属学及工艺—金属切削加工及机床]