A Case Study on the Use of Box-Behnken Design to Improve an Electrical Discharge Machining

다국어 초록 (Multilingual Abstract)

This study presents the usefulness of response surface methodology (RSM) in die-sinking electrical discharge machining (EDM) process improvement. Conventional research on this process has been focused on the single-electrode method, but the industry practitioners prefer adopting the two-electrode method, one for the roughing and the other for the finishing stages, using a single discharge step. We propose a multiple discharge step (MDS) method that uses three discharge currents at each stage. RSM is employed to optimize the discharge conditions. Experimentally, the MDS method combined with RSM improves electrode edge wear and surface roughness.

참고문헌 (Reference)

1 정현제 ; 변재현 ; 청더쥔 ; 오영진 ; 김수진, "방전가공 시간과 품질 예측을 위한 반응표면법과 방전에너지법 비교" 한국생산제조학회 26 (26): 466-471, 2017

2 Derringer, G., "Simultaneous Optimization of Several Response Variables" 12 (12): 214-219, 1980

3 Myers, R. H., "Response Surface Methodology: Process and Product Optimization Using Designed Experiments" Wiley 2016

4 Flaño, O., "Experimental Study on the Influence of Electrode Geometry and Electrode Path on Wear Pattern in EDM" 68 : 405-410, 2018

5 Montgomery, D. C., "Experimental Design for Product and Process Design and Development" 48 (48): 159-177, 1999

6 Kiyak, M., "Examination of Machining Parameters on Surface Roughness in EDM of Tool Steel" 191 (191): 141-144, 2007

7 Zhou, S., "Electrical Discharge Machining Inconel 718 with Adaptively Regulating Gap Servo-Voltage" 109 (109): 2575-2585, 2020

8 Bédard, F., "Die-Sinking EDM of Al6061-T6: Interactions between Process Variables, Process Performance, and Surface Characteristics" 107 (107): 333-342, 2020

9 Ozgedik, A., "An Experimental Investigation of Tool Wear in Electric Discharge Machining" 27 (27): 488-500, 2006