เอกสารการประชุมวิชาการและเสนอผลงานวิจัย มหาวิทยาลัยทักษิณ ครั้งที่ 19 2552 - page 129

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Improvement of Rotary Electrode EDM Process Using Grey Relational Analysis
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Kannachai Kanlayasiri1*
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Abstract
This paper presents an improvement technique for cutting DC 53 tool steel using rotary electrode EDM.
The improvement of the machining process was accomplished using optimal cutting conditions obtained from grey
relational analysis. In this study, discharge pulse time, pulse peak current, and rotational speed of electrode were
the cutting parameters, and the machining characteristics considered were material removal rate and surface
roughness of the workpiece. The optimal cutting conditions acquired from grey relational analysis provided an
improvement of the machining characteristics. Material removal rate was increased by 101% and surface
roughness was reduced by 18.2% compared to responses of the pre-improvement cutting conditions.
Keywords: Electric-discharge machining, Rotary electrode, Optimization techniques, Grey relational analysis
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„¦»ŠÁš¡² 10520
* Corresponding author : Ú¦«´¡šr 02-7390653 Ú¦µ¦ 02-7392392Email-kkkannac@kmitl.ac.th