Title: Measurement-based modelling of cutting forces in micro-milling of Inconel 718

Authors: Xiaohong Lu; Zhenyuan Jia; Hua Wang; Xiaochen Hu; Guangjun Li; Likun Si

Addresses: Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian, 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian, 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian, 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian, 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian, 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology Dalian, 116024, China

Abstract: Due to its superior properties, nickel-based superalloy Inconel 718 can meet the requirements of micro parts with the high strength at high temperatures which have three-dimensional geometry structure like stepped surface, deep-hole, thin wall and so on. However, Inconel 718 is difficult to cut. Now, there are few researches on the cutting forces in micro-milling of Inconel 718, and the micro-milling mechanism of nickel-based superalloy is almost blank, while the prediction and control of micro-milling forces is important to reveal the micro-milling mechanism of nickel-based superalloy, to realise processing parameter optimisation, to reduce the tool wear, etc... To predict the cutting forces during micro-milling Inconel 718 process, coated carbide tools are used to micro-milling micro groove on Inconel 718, and the orthogonal type experiments are adopted. The influences of cutting parameters on cutting forces are studied. The micro-milling forces prediction model is built based on the experimental results, which can be used to predict the cutting forces during micro-milling of Inconel 718 nickel-based superalloy. To prove the validity of the built model, the significance test and fitting degree test are conducted.

Keywords: micromilling; process parameters; Inconel 718; measurement-based modelling; cutting forces; micromachining; nickel based superalloys; tool wear; coated carbide tools; micro grooves; orthogonal arrays.

DOI: 10.1504/IJNM.2017.082406

International Journal of Nanomanufacturing, 2017 Vol.13 No.1, pp.1 - 11

Received: 26 Nov 2015
Accepted: 04 Jan 2016

Published online: 14 Feb 2017 *

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