基于灰色理论的钛合金电火花加工工艺参数优化试验  

Experiments of Parameter Optimization of EDM Titanium Alloy Based on Gray Relation Theory

作　　者：赵建社[1] 郁子欣 周旭娇 余泽[1,2] 豆海峰 

机构地区：[1]南京航空航天大学,南京210016 [2]成都飞机工业(集团)有限责任公司,成都610092

出　　处：《中国机械工程》2015年第14期1877-1882,共6页China Mechanical Engineering

基　　金：航空科学基金资助项目(2011ZE52055);"十二五"国防技术基础项目;中央高校基本科研业务费专项资金资助项目(NS2013052)

摘　　要：为对材料去除速度、电极损耗和表面质量等工艺目标进行综合评价,以钛合金材料为试验对象,基于成熟的电火花加工设备,对峰值电流、脉冲宽度、占空比和抬刀周期等可调工艺参数进行正交试验研究,运用灰色理论进行试验数据分析,将多工艺目标转化为单一考量指标(灰关联度),简化了试验过程,得到了工艺参数组合优化方案。验证试验结果表明,该参数组合能够在保证表面质量要求的同时,有效提高加工效率和降低电极损耗。Material removal rate, electrode wear ratio and surface roughness were chosen as the performance characteristics. To comprehensively evaluate the performance characteristics above, ad- justable process parameters such as peak current, pulse duration, duty factor and tool jump cycle were studied in orthogonal experiments, which tested titanium alloy using commercially mature EDM equip- ment. Test process was simplified and optimized process parameter combination was achieved based on gray relation analysis,which converted multiple performances objectives into a single index（gray rela- tion grade）. Based on the confirmation experiments, the parameter combination can achieve a higher material removal rate and lower electrode wear ratio simultaneously and meet the requirements of sur- face roughness.

关 键 词：钛合金 电火花加工 灰关联 参数优化 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]