Optimization of Machining Parameters in Turning Operation of Aluminium Alloy for MRR and Hardness

Author : Sandeep Sharma and Deepak Gaur

Metal removal turning is a process in production industries for the manufacturing of number of components. The mostly used turning machines are centre lathe, turret lathe, and cnc machine. Centre lathe is a general purpose machine which is mostly used in most of industries. First pilot experiments were done on the work piece using random values and then from those pilot experiments the suitable values of these parameters were selected. On the basis of observations from the pilot experiments four values of Spindle speed 59,118,165,220, four values of feed .12, .14, .16, .18 and four values of Depth of cut .8, 1, 1.2, 1.4 were chosen. L16 orthogonal array performed using these values. It is concluded that for MRR be maximum factor Cutting speed has to be at high level 4, Feed has to be at high level 4 & D.O.C has to be at high level 4. It is concluded that for hardness to be maximum Cutting speed has to be at high level 4, Feed has to be at low level 1 & D.O.C has to be at level 2.

Keywords: Machining, Taguchi, Orthogonal Array, Signal to noise ratio