镍基高温合金珩磨材料去除率研究

Study on Material Removal Rate of Nickel-Based Superalloy During Honing

针对典型的镍基高温合金材料GH4169开展珩磨试验,研究了主轴转速、往复速度、每往复进给量、油石粒径对材料去除率的影响规律。结果表明:主轴转速对材料去除率影响较小,其余三因素均对材料去除率有显著影响,其中每往复进给量和油石粒径的影响最为显著,且材料去除率与三者均呈现正相关关系。进行多元线性回归拟合出经验公式。同时还发现,适当提高网纹交叉角可以提高珩磨材料去除率。对加工余量一定且粗糙度要较高的内孔珩磨进行了工艺优化,实现了更高的加工效率。

Honing experiments are carried out for a typical superalloy GH4169 to analyze the material removal rate against four factors：spindle speed,stroke speed,wedge feed per stroke cycle and grain size.The results show that：the other three factors have a significant influence on material removal rate while the spindle speed affects little,in which grain size and feed per stroke cycle exert the greatest impact on material removal rate.There is a positive correlation between material removal rate and the three caught.And the experience formula is fit with multiple linear regression.The study also finds that raise the cross hatch angle appropriately can improve material removal rate.Honing process is optimized for hole with small allowance and a higher roughness request to achieve higher efficiency.