两种砂轮磨削Ti5Al4V钛合金的表面质量比较  

Comparison of Surface Quality of Ti5Al4V Alloys Grinded by Two Type of Grinding Wheels

作　　者：李龙[1] 张兴权[1] 杨树宝[1] 汪世益[1] 时礼平[1] 

机构地区：[1]安徽工业大学机械工程学院,马鞍山243002

出　　处：《机械工程材料》2015年第8期55-58,64,共5页Materials For Mechanical Engineering

基　　金：安徽省自然科学基金资助项目(090414156)

摘　　要：分别用SiC、CBN两种砂轮对Ti5Al4V钛合金进行了干磨削试验,研究了在0.01,0.03,0.05mm三种磨削深度下钛合金的表面硬度、表面粗糙度和表面形貌。结果表明:随着磨削深度的增加,经SiC砂轮磨削后,Ti5Al4V钛合金表面形貌逐渐恶化,出现了磨削烧伤和磨削裂纹,次表层的硬度下降,出现了软化层;在相同的磨削深度下,CBN砂轮磨削的Ti5Al4V钛合金表面质量优于SiC砂轮磨削的,主要原因是CBN砂轮磨削时产生的磨削力小和磨削热较少。Dry grinding experiments for titanium alloy Ti5Al4V were carried out using SiC and CBN grinding wheels to study the surface micro-hardness, surface roughness and surface morphology of Ti alloy under three grinding depths （0.01, 0.03, 0.05 mm）. Results show that with the increase of grinding depth, the surface morphology of the TiSAI4V alloy grinded by SiC grinding wheel became worse, grinding burn and cracks appeared, the hardness of the subsurface decreased, and a softened layer appeared~ while under the same grinding depth, the surface quality of the Ti5Al4V alloy grinded by CBN grinding wheel was superior to that by SiC grinding wheel, which was mainly attributed to CBN grinding wheel producing smaller grinding force and less heat in grinding.

关 键 词：Ti5Al4V合金 SiC砂轮 CBN砂轮 磨削 表面形貌 

分 类 号：TG74[金属学及工艺—刀具与模具]