PARTICULARITIES OF CMT/CMTP BRAZE - WELDING PROCESS BETWEEN GALVANIZED STEEL AND ALUMINIUM ALLOY

1 SIMON Natanael
Co-authors:
1 MITELEA Ion 1 BURCĂ Mircea 1 UŢU Ion Dragoş
Institution:
1 University Politehnica of Timisoara, Faculty of Mechanical Engineering, Timisoara, Romania, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
672-677
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
11 views / 3 downloads
Abstract

The CMT/CMTP braze-welding process is characterized by interruption of a short-arc at low welding current values, which is controlled by an invertor source. Thereby, the used energy is lowered by short time (about 1 μs) before reignition of the electric arc. Because of the offered benefits (joining of thin materials, the possibility of using large diameter wire electrode by low welding current, low heat input values, etc.) is facilitated the achievement of butt, corner and overlap welded joints, between dissimilar materials that have a low welding metallurgical behavior. In this paper is analysed the opportunity to produce heterogeneous braze-welded joints (galvanized steel – aluminum alloy) starting from a factorial experiment which considers three sets of technological parameters. Welded joints quality is evaluated by metallographic examinations and mechanical testing.

Keywords: CMT/CMTP process, galvanized steel, aluminium alloy
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