Non-Traditional Machining of High Carbon High Chromium Steel and Optimization of Process Parameters
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Abstract
Conventional machining has been replaced by unconventional machining in numerous industrial applications, avoiding the high tool cost involved. In the proposed study spark erosion machining uses molybdenum as the electrode (wire) material for machining of HCHCR D3 tool steel work piece material. Distilled water and kerosene in the ratio (10:1) is used as di-electric medium. The parameters like, pulse duration, pulse interval and gap voltage, were chosen as input factors and the output responses considered were amount of material removal rate (MRR) and roughness at the surface. Three parameters were considered at three different levels and totally nine experiments were conducted based on L9 orthogonal array. Experimental results were analysed by using Minitab software and from the analysis it was observed that pulse interval and gap voltage was more dominating in surface roughness and machining time. Pulse duration and gap voltage were influencing more in controlling MRR.
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