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Electrical Discharge Machining (EDM) is a recognized machining process utilized in tool rooms for the production of geometrically intricate shapes and components made from hard materials. This method is particularly advantageous for creating parts that are challenging to fabricate or design using traditional machining techniques. A substantial number of studies have been conducted regarding the analysis of Material Removal Rate (MRR) and Tool Wear Rate (TWR) across various materials, considering parameters such as current, P-on time and P-off time, spark gap, voltage, and dielectric fluid, among others. Still, very few studies have been done on the effect of current with P-on time and P-off time to analyze the surface morphology of 17–4 PH stainless steel. The present study deals with the impact of the selected parameter, pulse duration Ra. The optimal EDM parameters (9.36 A, 300 µs P-on, 150 µs P-off) yielded the lowest surface roughness of 8.436 µm.

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Effect of Pulse Duration on the Surface Roughness of EDM Processed 17–4 PH Stainless Steel

  • 会议论文

  • 发表日期：

    2026年

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  • S. N. Roy,
  • S. S. Dhami

摘要

Electrical Discharge Machining (EDM) is a recognized machining process utilized in tool rooms for the production of geometrically intricate shapes and components made from hard materials. This method is particularly advantageous for creating parts that are challenging to fabricate or design using traditional machining techniques. A substantial number of studies have been conducted regarding the analysis of Material Removal Rate (MRR) and Tool Wear Rate (TWR) across various materials, considering parameters such as current, P-on time and P-off time, spark gap, voltage, and dielectric fluid, among others. Still, very few studies have been done on the effect of current with P-on time and P-off time to analyze the surface morphology of 17–4 PH stainless steel. The present study deals with the impact of the selected parameter, pulse duration Ra. The optimal EDM parameters (9.36 A, 300 µs P-on, 150 µs P-off) yielded the lowest surface roughness of 8.436 µm.