Application of rotating arc system to horizontal narrow gap welding

Yang, Chunli; Guo, Ning; Lin, Sanbao; Fan, Chenglei; Zhang, Y. Q.

doi:10.1179/136217108x388651

Cited by 51 publications

(29 citation statements)

References 10 publications

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“…Embora alguns estudos [9,13,15,[21][22][23][24] mostrem resultados sobre as características operacionais do processo, a literatura com evidências sobre as possíveis vantagens competitivas e envolvendo propriedades mecânicas de juntas soldadas obtidas por este processo é ainda muito limitada [25][26][27] e mais evidências experimentais se fazem necessárias para confirmar as afirmações de possíveis melhorias na qualidade e produtividade de soldagens realizadas por este processo [27]. Baseado neste cenário, este trabalho tem por objetivo apresentar resultados sobre o comportamento mecânico e microestrutural de juntas soldadas de aço C-Mn obtidas pelos processos GMAW-RE e GMAW, de modo a contribuir para um melhor entendimento sobre o potencial deste novo processo para aplicações industriais.…”

Section: Figuraunclassified

Comportamento de Juntas Soldadas de Aço C-Mn Obtidas Pelo Processo GMAW-RE com Eletrodo Rotativo

et al. 2019

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Resumo O presente trabalho tem como objetivo estudar o comportamento de juntas soldadas obtidas pelo processo GMAW com eletrodo rotativo (GMAW-RE), de modo a permitir uma análise comparativa de produtividade e propriedades mecânicas com o processo GMAW convencional (GMAW). Foram realizadas soldagens multipasse pelos dois processos GMAW com preaquecimento de 100 °C em chapas de dimensões 500 × 150 × 10 mm em aço ASTM A36, na posição plana e energia de soldagem média de 2,30 kJ/mm. Após a soldagem, foram realizados ensaios de impacto Charpy-V, microdureza e metalográficos em corpos-de-prova removidos transversalmente ao cordão de solda. Adicionalmente, foi realizada uma análise comparativa de produtividade entre os processos. Os resultados mostram que o processo GMAW-RE propicia um aumento de produtividade e redução de custos significativos em relação ao processo GMAW. Adicionalmente, foram observados valores equivalentes de tenacidade ao impacto para o metal de solda, mas uma redução nesta propriedade na zona termicamente afetada. Embora a literatura disponível destaque o elevado potencial deste processo para substituição do processo GMAW convencional em aplicações industriais, verifica-se a necessidade de mais evidências experimentais para um maior suporte a esta indicação.

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Section: Figuraunclassified

Comportamento de Juntas Soldadas de Aço C-Mn Obtidas Pelo Processo GMAW-RE com Eletrodo Rotativo

et al. 2019

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“…A new development of the rotating arc, rotation that is not due to the magnetic effect but to special small rotating torches, makes it possible to apply a rotating arc mode to fillet welding in shipbuilding, bridges, etc. The mode is also suitable for low carbon steel plates (Iwata et al 2009a, b;Yang et al 2009;Christensen et al 2005). …”

Section: Higher-power Arcmentioning

confidence: 99%

Usability of arc types in industrial welding

Kah

Latifi

Suoranta

et al. 2014

Int J Mech Mater Eng

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Arc behaviour is a significant factor in all arc welding processes. Understanding of arc types and their inherent properties can help enhance weld prediction and weld quality and reduce welding cost and production cycle time. Advanced welding processes utilize real-time control and prediction, increasing the need for detailed knowledge of arc characteristics and arc applications. This paper analyses the types of welding arcs used in the welding industry, explains corresponding features and characteristics, provides guidance for suitable applications, and presents arc type comparisons, benefits, and weaknesses. The study is based on a review of the literature, and it provides a comprehensive overview of arc phenomena. The results of this work show that in many applications, greater benefit accrues from spray and pulsed arcs than short and globular arc modes. Controlled short arc, heavy deposition rate arc, and controlled spray arc are enhanced arc processes offering significant improvements in efficiency and usability. This review can assist companies in making appropriate choices of arc and welding process for different materials and applications. Furthermore, it can be utilized as a basis for further research.

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“…These methods include reducing the heat input by controlling welding parameters or using pulse welding current, counteracting the gravity by using Lorentz force or surface tension and the method using rotating arc and so on. 3,4,8,11 The published literatures of horizontal welding on aluminium alloys are very few. Horizontal welding of aluminium alloys is more difficult due to the physical and metallurgical characteristics of aluminium alloy itself.…”

Section: Introductionmentioning

confidence: 99%

Horizontal welding of aluminium alloys by soft plasma arc

Zhang

Yang

Lin

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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Horizontal welding plays an important role in manufacture of large and heavy aluminium alloy structures. But there are many problems such as bad weld formation, porosity and low efficiency. Variable polarity plasma arc welding is a low-defect and high-efficiency welding technology, but it has difficulty in horizontal position. The maximum weldable thickness is less than 6.4 mm in single-pass weld. The soft plasma arc was proposed in this article. Horizontal welding of aluminium alloy plates with 8 mm thickness was realized successfully. The joint was free of defects and had excellent mechanical properties. This is a breakthrough in single-pass horizontal welding. Moreover, the characteristic of the soft plasma arc was studied in detail and the fluid flow in weld backside was observed. Finally, the forming mechanism of a stale weld pool was discussed. Results indicated that the arc pressure with the soft plasma arc was lower than that with the ordinary plasma arc. The fluid flow was asymmetric in horizontal position. The forming of a keyhole was realized by the bridging of the molten metals in the upper and lower sides. The weld pool was stable with the soft plasma arc because the maximum diameter of keyhole was bigger than that with the ordinary plasma arc.

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Application of rotating arc system to horizontal narrow gap welding

Cited by 51 publications

References 10 publications

Comportamento de Juntas Soldadas de Aço C-Mn Obtidas Pelo Processo GMAW-RE com Eletrodo Rotativo

Comportamento de Juntas Soldadas de Aço C-Mn Obtidas Pelo Processo GMAW-RE com Eletrodo Rotativo

Usability of arc types in industrial welding

Horizontal welding of aluminium alloys by soft plasma arc

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