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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Le Xuan Hung1, Tran Thanh Hoang2 and Vu Ngoc Pi1
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DOI:10.17265/2162-5263/2017.07.006
Affiliation(s)
1. Mechanical Engineering Faculty, Thai Nguyen University of Technology, Thai Nguyen 23000, Vietnam
2. Center for Technical Practice, Thai Nguyen University of Technology, Thai Nguyen 23000, Vietnam
ABSTRACT
This paper introduces
a study on modelling surface finish in EDM (Electrical
Discharge Machining) of tablet shape punches when using copper as
electrode material. In this study, 27 experiments were performed based on BBD (Box-Behnken Design) and the work-piece material was 9CrSi steel.
The input process parameters were the current, the pulse on time, the pulse off
time and the voltage. The effects of the input parameters on the surface finish
were evaluated by analysing variance. Besides, from the results of the
experiments, a regression equation for determining the surface roughness is
introduced. Also, the optimum input parameter values were found in order to get
the minimum surface roughness.
KEYWORDS
EDM (Electrical Discharge Machining), EDM sinking, surface roughness, RSM (Response Surface Methodology), BBD (Box-Behken Design).
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