Experimental investigation and modeling of cutting force and surface roughness in hard turning of AISI H11 steel with coated and uncoated ceramic tools using taguchi plan and RMS method: including 2D and 3D surface topography

Abstract

In this study, the cutting performance of two ceramic cutting tools namely, TiN coated mixed ceramic CC6050 and uncoated mixed ceramic CC650 when machining hardened hot work steel X38CrMoV5-1 [AISI H11] treated at 50 HRC is determined. The cutting performance was evaluated by cutting force and surface roughness. The planning of experiments was based on Taguchi’s L36 orthogonal array. The response surface methodology (RSM) and analysis of variance (ANOVA) were used to check the validity of multiple linear regression models and to determine the significant parameter affecting the cutting force and the surface roughness (Rt). From the parametric analysis, it is revealed that, the CC650 insert performs better with reference to cutting force and surface roughness, than the CC6050