GH4169高温镍基合金砂带磨削工艺试验分析

Analysis on Abrasive Belt Grinding Process Test of GH4169 Nickel Based Superalloy

高温镍基合金GH4169是一种用于制造航空发动机叶片的特殊难加工材料,传统机械加工方法易使该材料烧伤、使叶片发生变形从而不能保证叶片的表面精度和形位精度。针对该难加工材料,展开了高温镍基合金GH4169砂带磨削工艺试验,着重讨论了多种砂带加工该材料的优劣并进行选择,对砂带磨削的工艺参数进行了分析优化。试验表明:R270(P240)砂带加工该材料较为理想,在一定条件下既满足粗糙度要求,又可实现较大的材料去除率,工艺参数合理。

The nickel based superalloy GH4169 is a kind of special and difficult-to-cut materials used in the manufacture of aircraft engine blades,the traditional machining methods are so easy to make the material burns and led to the deformation on blade that it can't ensure the accuracy of surface,form and position. The grinding process test in view of the abrasive belt selection and processing parameter optimization of the abrasive belt grinding on the present material is carried out,emphatically discuss the pros and cons of various types of abrasive belt during processing,make a selection of abrasive belt,optimize and analyze the grinding process parameters. The results show that R270( P240) abrasive belt is ideal and under certain conditions,it can meet the roughness requirement and realizes larger material removal rate,it can also provide a reference for computerized numerical control belt polishing on the aircraft engine blades.