摘要
为研究电火花加工Al2O3-TiC陶瓷材料工艺参数对工艺性能的影响,设计了混合 2-3 水平正交试验方法.研究加工极性、极间电压、最大放电电流、增益、脉冲频率、脉宽、放电间隙与电极长度损耗、电极轮廓损耗、材料去除率之间的规律.通过极差分析,获得了工艺参数对工艺性能的影响趋势.结合方差分析,表明加工极性对电极损耗有显著影响,极间电压、最大放电电流显著影响材料去除率.综合三项工艺性能,最优的参数组合为负加工极性、130 V极间电压、50 A最大放电电流、45 增益、150 Hz脉冲频率、1.0 μs脉宽、放电间隙 40 μm.
Abstract
To study the effects of the processing parameters of Al2O3-TiC ceramics on the processing performance during electrical discharge machining(EDM),a mixed 2-3 level orthogonal test was designed,which was designed with polarity,inter-electrode voltage,maximum discharge current,gain,pulse frequency,pulse width,and discharging gap.Three kinds of target performance,including electrode length loss,electrode contour loss,material removal rate were selected.Through the range analysis,the effects of the processing parameters on the processing performance was obtained.Combining with analysis of variance,the polarity has a significant impact on the electrode loss;the inter electrode voltage and pulse current have a significant impact on the material removal rate.Taking the three factors into account,the optimal combination level of machining parameters is a negative processing polarity,electrode voltage of 130 V,peak current of 50 A,45 gain,pulse frequency of 150 Hz,pulse width of 1.0 μs and discharging gap of 40 μm.
基金项目
国家留学基金奖学金项目(桂教办[2016]50)
广西壮族自治区科技攻关计划(桂科攻1355008-10)
国家科技期刊平台
NSTL
万方数据