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Investigation of the effect of torch tilt and external magnetic field on arc during overlapping deposition of wire arc additive manufacturing

Xiangman Zhou (College of Mechanical and Power Engineering, China Three Gorges University, Yichang, China and Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang, China)
Qihua Tian (College of Mechanical and Power Engineering, China Three Gorges University, Yichang, China and Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang, China)
Yixian Du (College of Mechanical and Power Engineering, China Three Gorges University, Yichang, China and Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang, China)
Yancheng Zhang (CEMEF – Centre de Mise en Forme des Matériaux, MINES ParisTech, PSL – Research University, Sophia Antipolis Cedex, France)
Xingwang Bai (School of Mechanical Engineering, University of South China, Hengyang, China)
Yicha Zhang (ICB-COMM UMR 6303, CNRS, Université de Technologie de Belfort-Montbéliard, Belfort, France)
Haiou Zhang (State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, China)
Congyang Zhang (College of Mechanical and Power Engineering, China Three Gorges University, Yichang, China)
Youlu Yuan (College of Mechanical and Power Engineering, China Three Gorges University, Yichang, China)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 10 November 2020

Issue publication date: 8 January 2021

443

Abstract

Purpose

The purpose of this paper is to find a theoretical reference to adjust the unsymmetrical arc shape and plasma flow of overlapping deposition in wire arc additive manufacturing (WAAM) and ensure the effect of the gas shielding and stable heat and mass transfer in deposition process. The multiphysical numerical simulation and physical experiment are used for validation.

Design/methodology/approach

In this study, welding torch tilt deposition and external parallel magnetic field–assisted deposition are presented to adjust the unsymmetrical arc shape and plasma flow of overlapping deposition, and a three-dimensional numerical model is developed to simulate the arc of torch tilt overlapping deposition and external parallel magnetic field–assisted overlapping deposition.

Findings

The comparison of simulated results indicate that the angle of welding torch tilt equal to 20° and the magnetic flux density of external transverse magnetic field equal to 0.001 Tesla are capable of balancing the electric arc and shielding gas effectively, respectively. The arc profiles captured by a high-speed camera match well with simulated results.

Originality/value

These studies of this paper can provide a theoretical basis and reference for the calibration and optimization of WAAM process parameters.

Keywords

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant no. 51705287, 51775308, 51975270, 51475265). The authors would like to thank Xing Zhou and Feixiang Mei for their experimental contributions.

Citation

Zhou, X., Tian, Q., Du, Y., Zhang, Y., Bai, X., Zhang, Y., Zhang, H., Zhang, C. and Yuan, Y. (2021), "Investigation of the effect of torch tilt and external magnetic field on arc during overlapping deposition of wire arc additive manufacturing", Rapid Prototyping Journal, Vol. 27 No. 1, pp. 24-36. https://doi.org/10.1108/RPJ-03-2020-0047

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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