The effect of process parameters on machining of magnesium nano alumina composites through EDM

被引：51
|
作者：
Ponappa, K. [1 ]
Aravindan, S. [1 ]
Rao, P. V. [1 ]
Ramkumar, J. [2 ]
Gupta, M. [3 ]
机构：
[1] Indian Inst Technol, Dept Mech Engn, Delhi, India
[2] Indian Inst Technol, Dept Mech Engn, Kanpur, Uttar Pradesh, India
[3] Natl Univ Singapore, Dept Mech Engn, Singapore 117548, Singapore
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2010年 / 46卷 / 9-12期
关键词：
EDM; Magnesium composite; Nano alumina; Taguchi;
D O I：
10.1007/s00170-009-2158-9
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The effects of electrical discharge machining (EDM) parameters on drilled-hole quality such as taper and surface finish are evaluated. Microwave-sintered magnesium nano composites (reinforced with 0.8 and 1.2 wt.% of nano alumina) are used as work materials. Experiments were conducted using Taguchi methodology to ascertain the effects of EDM process parameter. The process parameters such as pulse-on time, pulse-off time, voltage gap, and servo speed were optimized to get better surface finish and reduced taper. ANOVA analyses were carried out to identify the significant factors that affect the hole accuracy and the surface roughness. Confirmation tests were performed on the predicted optimum process parameters. Pulse-on time and the servo speed are identified as major response variables. Micro structural changes and the effects of nano particle reinforcement in the drilled hole were studied through SEM micrographs.
引用
收藏
页码：1035 / 1042
页数：8
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