반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

AISI 4340강의 방전가공에서 공정변수의 최적화

Optimization of Process Parameters for AISI 4340 Steel in Electrical Discharge Machining

  • 최만성 (한국기술교육대학교 메카트로닉스공학부)
  • Choi, Man Sung (School of Mechatronics Engineering, Korea University of Technology and Education)
  • 투고 : 2019.05.31
  • 심사 : 2019.06.18
  • 발행 : 2019.06.30
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초록

The method of electrical discharge machining (EDM), one of the processing methods based on non-traditional manufacturing procedures, is gaining increased popularity, since it does not require cutting tools and allows machining involving hard, brittle, thin and complex geometry. This present investigation details the determination of optimum process parameter to attain the better machining performance in EDM of AISI 4340 steel with graphite as a tool electrode. The experimental combinations are planned and analyzed by Taguchi's design of experiments approach. To predict the optimal condition, the experiments are conducted by using Taguchi's L27 orthogonal array. The influence of process variables such as discharge current, pulse on and pulse off time, voltage and spark speed were investigated to control the various desired performance measures such as surface roughness. Analysis of Variance (ANOVA) has to be performed to know the magnitude of each factor. Investigations indicate that the surface roughness is strongly depend on pulsed current.

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참고문헌

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