Title: Performance of PVD and CVD coated cutting tool inserts in machining under MQL-MQSL environment

Authors: Mayurkumar A. Makhesana; Kaushik M. Patel

Addresses: Mechanical Engineering Department, Institute of Technology, Nirma University, Ahmedabad – 382481, Gujarat, India ' Mechanical Engineering Department, Institute of Technology, Nirma University, Ahmedabad – 382481, Gujarat, India

Abstract: The current study evaluated the performance of coated tools during machining and addressed the applicability of minimum quantity lubrication (MQL) and minimum quantity solid lubrication (MQSL). Experimental investigations have been done to evaluate the machinability aspects such as flank wear and hence tool life, forms of tool wear and surface roughness in turning of AISI 52100 steel using dry, MQL and MQSL machining with physical vapour deposition (PVD) multilayer (TiAlN/TiN) and chemical vapour deposition (CVD) bilayer (TiCN/Al2O3) coated carbide inserts. Longer tool life is observed under MQL and MQSL cutting conditions, which can be due to enhanced lubrication and cooling effect. It can be seen that PVD coated carbide tool with MQL and MQSL performed effectively as compared to CVD tools for selected cutting environments. Based on the findings, the presented approach provides a more clear methodology to select the combination of the cutting tool and lubrication strategy.

Keywords: turning; flank wear; surface roughness; CVD coated tools; PVD coated tools; MQL; minimum quantity lubrication; MQSL; minimum quantity solid lubrication.

DOI: 10.1504/IJMMS.2020.111282

International Journal of Mechatronics and Manufacturing Systems, 2020 Vol.13 No.3, pp.210 - 229

Received: 09 Apr 2020
Accepted: 08 Jul 2020

Published online: 05 Nov 2020 *

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