期刊
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
卷 9, 期 4, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/2051-672X/ac456a
关键词
PMEDM; MEIOT; surface topography; optimization; EDM
This research explores machining of Ti6Al4V titanium alloy using AA6061/10 Gr composite tool, achieving optimal performance through the addition of Al2O3 particles and optimization of parameters.
In this research work, an attempt was made to machine Ti6Al4V titanium alloy utilizing AA6061/10 Gr composite tool. The composite tool was fabricated using stir casting technique and Al2O3 particles of size 5 mu m were incorporated in the dielectric fluid to enhance the machining performance. Experiments were conducted by varying Al(2)0(3) concentration, pulse on time, current, and pulse off time, and the responses Material Removal Rate (MRR), Tool Wear Rate (TWR), and Surface Roughness (Ra) were recorded. Experiments runs were planned using Taguchi orthogonal array. The results revealed that adding powder increases MRR and TWR owing to the excessive heat generation and bridging effect respectively. The best surface finish was attained due to the increase in spark gap and complete flushing of machined debris. Coating of materials over the machined specimen was observed when the parametric value of Ton was higher than 60 mu s under PMEDM conditions. Pits, craters and cracks were observed on the machined topography which was eliminated when 5 g l(-1) of Al2O3 particles were added to dielectric fluid. MEIOT technique was utilized for optimization and it was observed that Ton 15 mu s, Toff 4 mu s and current 7 A and powder concentration of 10 g l(-1) results in best machining performance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据