Comparative analysis of process parameters in wear properties of coated and uncoated tool inserts during machining of Hastelloy C-276

Abstract

Machining is the most significant process for any manufacturing company to improve the quality of the finished component. The objective of this article is to analyse the process performance of Hastelloy C-276 using PVD (Physical Vapour Deposition) coated, uncoated and alumina-based ceramic tool inserts of high grade quality. Turning process was performed on NC (Numerical Control) machine by varying RPM, feed rate and depth of cut based on the Taguchi L9 orthogonal array approach. In this study, crank wear, flank wear, nose wear, SR (Surface Roughness), MRR (Material Removal Rate), tool temperature and feed force are examined during machining of hardened material and simultaneously static structural analysis of the tool insert along with the tool holder was performed using ANSYS mechanical. This research investigation helps in determining appropriate parameters with varied coated inserts to make the process easier, efficient and economical.

Intermittent machining of hardened steels with different types of PcBN cutting tools

“…Apart from chemical interaction affecting the wear of PcBN composites, brittle fracture of the cutting tool is one of the major reasons leading to its failure. Experiments in [13] demonstrated the BH PcBN cutting tool edge chipping while bearing steel milling, characterized by interrupted cutting mode. Experimental results [14] also show that failure types of PCBN tools at the low range of milling velocities include chipping and flank wear, and the failure modes at high speed are flank wear, surface spalling of the rake face, and fatigue failure.…”