Article
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Preserved in Portico This version is not peer-reviewed
Single-pass Process of Square Butt Joints without Edge Preparation using Hot-wire Gas Metal Arc Welding
Version 1
: Received: 9 May 2023 / Approved: 9 May 2023 / Online: 9 May 2023 (10:12:09 CEST)
A peer-reviewed article of this Preprint also exists.
Suwannatee, N.; Yamamoto, M. Single-Pass Process of Square Butt Joints without Edge Preparation Using Hot-Wire Gas Metal Arc Welding. Metals 2023, 13, 1014. Suwannatee, N.; Yamamoto, M. Single-Pass Process of Square Butt Joints without Edge Preparation Using Hot-Wire Gas Metal Arc Welding. Metals 2023, 13, 1014.
Abstract
This paper presents a novel approach of welding thick steel plates that offers time and energy savings compared with conventional techniques. The combination of gas metal arc welding (GMAW) and hot-wire technology simplifies the joint configuration and enhances the process tolerance. In this study, a square butt joint was prepared with as-cut edges and a thickness of 15 mm. The relationship between the welding current and the deposition rate of solo GMAW showed limitations and low process tolerance. Increasing the welding current led to a larger deposited volume with unnecessary weld penetration. An independent deposition volume due to hot-wire insertion was used to improve process tolerance. This approach provided an additional volume without increasing the welding current and reduced unnecessary penetration. With optimized parameters, full-penetration single-pass welding was achieved. Compared with the formation of a typical single-v butt joint at a similar welding speed of 30 cm/min, the proposed process reduced the minimum arc time and power consumption by approximately 83% and 62%, respectively. Moreover, a single pass at a travel speed of 60 cm/min was achieved with approximately 91% and 81% less arc time and power consumption, respectively. In summary, the combined process simplifies the joint configuration, enables full-penetration single-pass welding, and reduces time and energy requirements.
Keywords
hot-wire; gas metal arc welding; single-pass welding; lower energy consumption welding
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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