Abstract
Keeping in mind the harmful effects of cutting on human health and environment, dry machining is employed vastly in machining of easy to cut materials. However, dry machining involves relatively high heat generation at cutting zone which leads to deterioration of finish quality of machined surface. The magnitude of this deteriorationis further high in case of softer material like aluminum alloy. In current study, an attempt is made to find the correlation of the surface roughness with cutting temperature while machining the aluminium alloy. Face milling experimentation was performed on aluminium alloy (Al-6061) using TiN coated carbide tools inserts under near dry cutting conditions employing Minimum Quantity Lubrication (MQL). CRITIC approach is exploited to determine the correlation between the surface roughness and cutting temperature. The results of CRITIC with Pearson correlation coefficient value of 0.9167, indicates the strong correlation between surface roughness and cutting temperature. The optimum parameter setting for the surface roughness is discovered as 160 ml/hr coolant flow rate, 50 mm spraying distance, and 45° nozzle elevation angle.
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