TB6钛合金抛光表面完整性试验

针对目前TB6钛合金类零件主要依靠手工抛光的技术问题,提出了羊毛毡轮数控抛光工艺,研究了抛光参数对表面粗糙度、表面硬度、表面残余应力的影响,进行了羊毛毡轮抛光参数优化,优选出了一组抛光参数:线速度v_s=19.63m/s,进给速度v_f=300mm/min,预压量a_p=0.5mm,加工行宽w=0.5mm。在此抛光参数下,羊毛毡轮抛光能够有效去除铣削刀纹,抛光后表面粗糙度R_a=0.15μm,并且抛光后表面残余应力为压应力。试验结果表明,该抛光方法能够有效地改善零件的表面完整性。

Experiment on Surface Integrity of Polishing for Titanium TB6

According to the question that TB6 titanium alloy parts depending on manual polishing,a polishing method utilizing the wool wheel is presented.This paper studies the influence of polishing parameters on surface roughness,surface hardness,and surface residual stress.Polishing parameters are optimized,and this paper has optimized out a set of polishing parameters:linear velocity vs=19.63m/s,feed speed vf=300mm/min,precompression depth ap=0.5mm,processing line width w=0.5mm,by which wool wheel polishing can effectively remove the milling pattem,enable the surface roughness Ra=0.15tm,and ensure that the residual stress of the polished surface is residual compressive stress.