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进行了Ti6Al4V合金锆刚玉页轮和碳化硅页轮的磨削性能试验研究,分析了磨削用量对磨削力、磨削温度和磨削表面完整性的影响。磨削力通过KISTLER 9265B测力仪测定,磨削表面温度由NIUSB-621X信号采集系统测得,磨削表面形貌和金相组织由Hirox KH-7700型体视显微仪和Quanta200型扫描电镜(SEM)观察,表面粗糙度由Mahr Perthometer M1粗糙度仪测得,表层显微硬度通过HVS-1000硬度计测定。研究结果表明:页轮磨削钛合金工件表面没有发生烧伤现象,磨削热影响区厚度小于50μm,锆刚玉页轮比碳化硅页轮更适合干式磨削钛合金。
The grinding performance of Ti6Al4V alloy corundum wheel and silicon carbide wheel was studied. The effects of grinding amount on grinding force, grinding temperature and grinding surface integrity were analyzed. Grinding force measured by KISTLER 9265B dynamometer, the grinding surface temperature measured by the NIUSB-621X signal acquisition system, the grinding surface morphology and microstructure by Hirox KH-7700 stereomicroscope and Quanta200 scanning electron microscope (SEM), the surface roughness was measured by a Mahr Perthometer M1 roughness tester, and the surface microhardness was measured by a HVS-1000 hardness tester. The results show that there is no burn phenomenon on the surface of the titanium wheel, the thickness of HAZ is less than 50μm, and the zirconia-alumina round wheel is more suitable for the dry grinding of titanium alloy than the silicon carbide wheel.