Title: Tool wear mechanism of micro-milling Inconel 718 thin wall

Authors: Xiaohong Lu; Yihan Luan; Kun Yang; Feixiang Ruan; Pengrong Hou; Ning Zhao

Addresses: School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China ' School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China ' School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China ' School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China ' School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China ' School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China

Abstract: Tool wear makes it difficult to obtain high-quality tiny thin wall parts during micro-milling Inconel 718 process. In this paper, tool wear mechanism of coated cemented carbide micro-milling tool is studied based on Inconel 718 thin wall micro-milling experiments. The wear, damage morphology and failure mechanism of the rake face of the circumferential edge and the flank face of the circumferential edge of the micro-milling tool are studied. It is found that the main failure mode of micro-milling tool is the damage of micro-milling tool circumferential edge and coating shedding; the main cause of tool wear is the combination of adhesive wear, diffusion wear and oxidation wear during micro-milling Inconel 718 thin wall parts,. The research provides reference for reducing the tool wear, extending the service life of cutter, and achieving high-quality thin wall parts during micro-milling Inconel 718 process.

Keywords: micro-milling; tool wear; Inconel 718; thin wall.

DOI: 10.1504/IJNM.2021.121810

International Journal of Nanomanufacturing, 2021 Vol.17 No.2, pp.77 - 91

Received: 31 Oct 2019
Accepted: 08 Dec 2020
Published online: 07 Apr 2022 *

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