Overcut Optimization in Machining of DIN 1.2767 Tool Steel with Electro Erosion Technique

Authors : Abubaker Fatatit, Ali Kalyon

Pages : 121-130

Doi:10.29130/dubited.1422393

View : 28 | Download : 28

Publication Date : 2025-01-30

Article Type : Research Paper

Abstract :Electro discharge machining is an energy based method that can cause fast electrode wear and dimensional errors. This study aimed to identify the optimum process parameters for processing 1.2767 steel using copper-based electrodes. The Taguchi optimization approach was used, and 18 pieces of 1.2767 steel were prepared for the experiments. The electrodes used were CuCoNiBe and CuNi2SiCr, and the electrode surfaces were sanded and polished before processing. The results showed that the CuNi2SiCr electrode produced the lowest overcut value of 0.07 mm, while the CuCoNiBe electrode had the highest observed overcut value of 0.320 mm. The discharge level had the most significant impact on overcut, while the type of electrode had the least. The optimal parameters for the CuNi2SiCr electrode were 12 A discharge current, 50 µs pulse duration, and 800 µs pulse off time. The processing under ideal conditions resulted in an overcut measurement value of 0.05 mm.
Keywords : EEİ, Yanal açıklık, Bakır, Taguchi, Optimizasyon