OPTIMIZATION OF CUTTING TEMPERATURE AND MRR DURING CNC MILLING OF INCOLOY 800 USING DOE TECHNIQUE
Keywords:Incoloy 800, Titanium Coated Cryogenic Treated Tungsten Carbide Insert, RSM, Multi Response Optimization, Milling.
The process high cutting frictional forces lead to rise in temperature at workpiece and tool interface which may affect the dimensional and surface quality of the product. Optimum machining parameters can reduce tool workpiece interference temperature and maximise material removal rate (MRR) at minimum machining cost. In this paper, the machining parameters i.e. cutting speed (Vc), depth of cut (d) and feed rate (f) has been optimized to reduce cutting temperature (T) and maximise MRR using Design of experiments (DOE). The optimization of the cutting temperature and MRR has been done simultaneously by multi response optimization technique and also a mathematical relation between response parameters and input process variables has been developed. The optimized process parameters obtained from machining through RSM were Vc is 2454.95 rpm, f is 437.05 mm/min and d is 0.20mm, corresponding T and MRR were 126.04 ˚C and 1.40 cm3/min respectively.