Machinability evaluation and comparison of Incoloy 825, Inconel 603 XL, Monel K400 and Inconel 600 super alloys in wire electrical discharge machining

Abstract

Machinability comparisons have been made between superalloys such as Incoloy 825, Inconel 603 XL, Monel K400, and Inconel 600 using wire cut electrical discharge machining based on straightness, surface roughness and perpendicularity. The squared holes have been cut out on different superalloys as per the orthogonal array. Pulse duration, voltage, pulse interval, wire feed and mean current consisting of five levels have been selected as inputs tuning factors for wire cut electrical discharge machining. The scanning electron microscope analysis have been employed to study the machined surface defects of superalloys and unique optimum process parameters respectively. Monel K400 produced better results than other superalloys.

Keywords

• Wire cut electrical discharge machining
• Superalloys
• Straightness
• Perpendicularity
• Surface roughness