Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding

The T-joints of medium-thick 6082 Al-alloy plates created by dual pulsed gas metal arc welding (P-GMAW) and bilateral synchronous welding were investigated to improve weld quality using the adaptive deposition method, which calculates the minimum amount of deposition according to the welding conditi...

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Autores principales:	Chunsheng Wang, Haicang Zhang, Zhaoyang Yan, Yun Zhao, Shujun Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	P-GMAW Al-alloy T-joints adaptive deposition synchronous welding root opening Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/e37ec1a1491a44afbe49b2735a0817f1
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id	oai:doaj.org-article:e37ec1a1491a44afbe49b2735a0817f1
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spelling	oai:doaj.org-article:e37ec1a1491a44afbe49b2735a0817f12021-11-25T18:21:59ZStudy on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding10.3390/met111117942075-4701https://doaj.org/article/e37ec1a1491a44afbe49b2735a0817f12021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1794https://doaj.org/toc/2075-4701The T-joints of medium-thick 6082 Al-alloy plates created by dual pulsed gas metal arc welding (P-GMAW) and bilateral synchronous welding were investigated to improve weld quality using the adaptive deposition method, which calculates the minimum amount of deposition according to the welding condition, groove size, and cross-sectional area, effectively reducing the heat input and deformation of the welds on the basis of weld filling. The optimized linear energy with a wire feed speed (WFS) of 9.5 m/min can ensure a well-formed weld with a complete root fusion, and high-quality T-joint welds were obtained both in root openings of 0 mm and 1 mm. The biggest penetration was 4 mm, which was four times more than that of the result from a single torch welding process. When the distance between the two welding torches exceeded 20 mm, the molten pool was completely separated, and process pores were observed in the unfused root zone. Influenced by the thermal cycles in asymmetric welding, the hardness distribution changed: the width of the softer zone at the base plate with the fore arc was smaller than that zone with the rear arc. Furthermore, dual P-GMAW bilateral synchronous welding with an asymmetric heat source can further reduce the deformation of the welded joint by about 20% compared to that of symmetric welding.Chunsheng WangHaicang ZhangZhaoyang YanYun ZhaoShujun ChenMDPI AGarticleP-GMAWAl-alloyT-jointsadaptive depositionsynchronous weldingroot openingMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1794, p 1794 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	P-GMAW Al-alloy T-joints adaptive deposition synchronous welding root opening Mining engineering. Metallurgy TN1-997
spellingShingle	P-GMAW Al-alloy T-joints adaptive deposition synchronous welding root opening Mining engineering. Metallurgy TN1-997 Chunsheng Wang Haicang Zhang Zhaoyang Yan Yun Zhao Shujun Chen Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding
description	The T-joints of medium-thick 6082 Al-alloy plates created by dual pulsed gas metal arc welding (P-GMAW) and bilateral synchronous welding were investigated to improve weld quality using the adaptive deposition method, which calculates the minimum amount of deposition according to the welding condition, groove size, and cross-sectional area, effectively reducing the heat input and deformation of the welds on the basis of weld filling. The optimized linear energy with a wire feed speed (WFS) of 9.5 m/min can ensure a well-formed weld with a complete root fusion, and high-quality T-joint welds were obtained both in root openings of 0 mm and 1 mm. The biggest penetration was 4 mm, which was four times more than that of the result from a single torch welding process. When the distance between the two welding torches exceeded 20 mm, the molten pool was completely separated, and process pores were observed in the unfused root zone. Influenced by the thermal cycles in asymmetric welding, the hardness distribution changed: the width of the softer zone at the base plate with the fore arc was smaller than that zone with the rear arc. Furthermore, dual P-GMAW bilateral synchronous welding with an asymmetric heat source can further reduce the deformation of the welded joint by about 20% compared to that of symmetric welding.
format	article
author	Chunsheng Wang Haicang Zhang Zhaoyang Yan Yun Zhao Shujun Chen
author_facet	Chunsheng Wang Haicang Zhang Zhaoyang Yan Yun Zhao Shujun Chen
author_sort	Chunsheng Wang
title	Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding
title_short	Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding
title_full	Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding
title_fullStr	Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding
title_full_unstemmed	Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding
title_sort	study on medium-thick al-alloy t-joints by dual p-gmaw bilateral synchronous welding
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e37ec1a1491a44afbe49b2735a0817f1
work_keys_str_mv	AT chunshengwang studyonmediumthickalalloytjointsbydualpgmawbilateralsynchronouswelding AT haicangzhang studyonmediumthickalalloytjointsbydualpgmawbilateralsynchronouswelding AT zhaoyangyan studyonmediumthickalalloytjointsbydualpgmawbilateralsynchronouswelding AT yunzhao studyonmediumthickalalloytjointsbydualpgmawbilateralsynchronouswelding AT shujunchen studyonmediumthickalalloytjointsbydualpgmawbilateralsynchronouswelding
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Study on Medium-Thick Al-Alloy T-Joints by Dual P-GMAW Bilateral Synchronous Welding

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