A Study on Optimizing the Cutting Condition and Parameters to Evaluate Surface Roughness in Milling SUS316 Stainless Steel Material

Zainal Ahmad, Nazri Syazwan (2021) A Study on Optimizing the Cutting Condition and Parameters to Evaluate Surface Roughness in Milling SUS316 Stainless Steel Material. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

Text NAZRI SYAZWAN BIN ZAINAL AHMAD_Full text.pdf Restricted to Registered users only Download (11MB)

Abstract

Obtaining surface roughness of SUS316 stainless steel material was studied under a dry cutting condition by using uncoated carbide cutting tool. The objectives of this research were set to obtain the suitable and optimal parameter to achieve lower surface roughness with varied and fixed parameter. This research is a continuation of the previous FYP project whereby optimum parameter obtain were at 4500rpm cutting speed, 350mm/min feed rate, 6mm depth, 0.1 width and 30μm CER and the result obtain was 0.908μm. Hence, the cutting tool used for this project was 6mm diameter, 4 flutes and 30μm of cutting edge radius inside milling condition. Workpiece used was SUS316 stainless steel material with dimension of 140mm length, 110mm width and 0.6mm depth. Cutting speed and feed rate were selected as manipulated variable with values of 4000, 5000 and 6000rpm and 350, 400 and 450mm/min respectively. Meanwhile, width of cut, depth of cut and cutting edge radius were selected as the fixed variable with values of 0.1mm width, 6mm depth and 30μm CER respectively. Experiment was run using 3-axis CNC machine and the parameter used in experiment were separated into 9 set of combination parameter generated using DOE software. The result of surface roughness was measure using TIME 3220 surface roughness tester and were recorded manually using DOE software. Result were recorded in DOE software to analyse, optimize and to evaluate desirability of these parameters. Based on the analysis, 6000rpm of cutting speed and 350mm/min of feed rate were the optimal parameter resulting in 0.804μm surface roughness.