MODELLING THE EFFECT OF CUTTING PARAMETERS ON SURFACE MICROHARDNESS IN TURNING SUS304 AUSTENITIC STAINLESS STEEL

Abstract

This paper focuses on studying the effect of cutting parameters, including
cutting speed (V), feed rate (f), and cutting of depth (t) on the surface
microhardness in turning SUS304 austenitic stainless steel. The measured results
from the experiments based on the Box-Behnken design (BBD) show that the
microhardness increases with the increase of all input parameters. Use analysis
of variance (ANOVA) to determine the contribution of each parameter to the
output indicator. The analysis results demonstrate that the feed rate has the
most significance in the generation of surface hardness (42.92%), followed by
the cutting speed (33.51%), while the depth of cut has less significance (5.82%).
The mathematical model of the relationship between the cutting parameters
and the surface microhardness is developed based on the response surface
methodology (RSM) to predict surface microhardness values.