SiCp/Al复合材料ELID磨削及工艺参数优化

2018-07-16

作者：关佳亮1，张妤1，胡志远1，戚泽海1，赵显辉2 单位：1北京工业大学；2首都航天机械公司

摘要：针对航天用SiCp/Al复合材料难加工的问题以及卫星输出轴的加工要求，采用ELID磨削技术对体积分数为48%的SiCp/Al进行试验，借助二次通用回归旋转组合法分析影响表面粗糙度的工艺参数，利用Lingo软件得到SiCp/Al复合材料ELID磨削最佳工艺参数为：磨削深度0.88mm、砂轮线速度35m/min、电解电流11A、占空比54%，并在此最佳工艺参数下磨削航天用SiCp/Al复合材料，并获得表面粗糙度为96nm的已加工表面。

关键词：SiCp/Al；ELID磨削机理；表面粗糙度；工艺参数优化

中图分类号：TG704；TH161.14文献标志码：A

SiCp/Al Composites for Aerospace ELID Grinding and

Optimization of Process Parameters

Guan Jialiang，Zhang Yu，Hu Zhiyuan，Qi Zehai，Zhao Xianhui

Abstract:Aiming at the difficult problem of SiCp/Al composites for aerospace，as well as the processing requirements of satellite output shafts，ELID grinding technology is used to test SiCp/Al with volume fraction of 48%.The process parameters affecting the surface roughness are analyzed by quadratic general regression spin combination method，the optimum process parameters of SiCp/Al composite ELID grinding are obtained by using Lingo software.When the grinding depth is 0.88mm，the wheel speed is 35m/min，the electrolytic current is 11A，the duty cycle is 54%，and grinding the aerospace SiCp/Al composites under the optimum process parameters can get a machined surface with a surface roughness of 96nm.

Keywords:SiCp/Al；ELID grinding mechanism；surface roughness；optimization of process parameters