Effect of increasing deposition rate on the bead geometry of submerged arc welds

Chandel, R. S.; Seow, H. P.; Cheong, F. L.

doi:10.1016/s0924-0136(97)00139-8

Cited by 94 publications

(33 citation statements)

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“…74/82 de arame adicional na modalidade "cold-wire" [7][8][9] ou "hot-wire" [10], e a soldagem com um prolongador [11][12][13] com o intuito de aumentar o stickout e, assim, aproveitar o aquecimento produzido por efeito joule devido à passagem da corrente de soldagem.…”

Section: Soldagem and Inspeção 2018;23(1):73-82unclassified

Avaliação do Uso do Tecimento na Soldagem a Arco Submerso

Cunha

Ribeiro

2018

Soldag. insp.

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Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution Non-Commercial, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que sem fins comerciais e que o trabalho original seja corretamente citado.Recebido: 08 Dez., 2017 Aceito: 04 Abr., 2018 E-mails: t.cunha@ufsc.br (TVC), hormeu@ifsc.edu.br (HOR)Resumo: Apesar de muito comum em diversos processos de soldagem, não se encontra nas aplicações industriais, tampouco na literatura especializada, qualquer referência ao uso do movimento de oscilação transversal do eletrodo na soldagem a arco submerso. Em vista disso, neste trabalho foi realizada uma investigação quanto ao emprego da técnica de tecimento no processo SAW. Para tanto, foram realizados ensaios de soldagem com amplitudes de tecimento (triangular) entre 0 e 30 mm para três níveis diferentes de energia de soldagem e avaliadas a penetração, largura, reforço, área do reforço e da área fundida dos cordões de solda obtidos, além da estabilidade do processo. Como resultado, verificou-se que, além de perfeitamente viável, a aplicação da citada técnica no processo SAW resultou em maior eficiência de fusão no processo, sem, entretanto, acarretar em instabilidades no processo ou problemas relacionados à inclusão de escória.Palavras-chave: Oscilação transversal; SAW; Eficiência de fusão; Morfologia dos cordões. Evaluation of Oscillation Movement in Submerged Arc WeldingAbstract: Although very common in many welding processes, there is no reference in the industrial applications, nor in the specialized literature, to the use of transverse oscillation movement of the electrode in submerged arc welding. In view of this, in this work an investigation was made regarding the use of the weaving technique in the SAW process. Therefore, welding tests with amplitudes of weaving (triangular) between 0 and 30 mm were carried out for three different levels of welding energy and the penetration, width, reinforcement, reinforcement area and melt area of the weld beads obtained were evaluated, besides the stability of the process. As a result, it was found that, in addition to being perfectly feasible, the application of cited technique in the SAW resulted in higher process melt efficiency, without, however, process instabilities or problems related to the inclusion of slag. Key-words:Transverse oscillation; SAW; Fusion efficiency; Weld bead morphology. IntroduçãoO emprego do processo de soldagem a arco submerso (SAW) na construção pesada como em estaleiros, mineradoras, siderúrgicas, fábricas de perfis e estruturas metálicas é algo recorrente. Isto se deve, sobretudo, a capacidade deste processo em atender a uma demanda comum destas empresas, que consiste na união de chapas de maior espessura.Uma característica marcante do processo SAW está no seu elevado rendimento de deposição e de fusão. Isto se deve, fundamentalmente, à inexistência de perdas de material por projeções ou respingos e à menor perda de calor para o meio, o que faz com que o processo aprese...

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Section: Soldagem and Inspeção 2018;23(1):73-82unclassified

Avaliação do Uso do Tecimento na Soldagem a Arco Submerso

Cunha

Ribeiro

2018

Soldag. insp.

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“…Sharma et al [6] the author investigates the effect of welding parameter like welding speed, voltage and current on the depth of penetration of welded joint. Chandel et al [7] derive a relationship between the bead height, bead width, melting rate, depth of penetration in terms of current, voltage, electrode diameter, electrode extension in submerged arc welding. Furuya et al [8] investigate the actual toughness in the weld zone.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Analysis of Arc Welded Mild Steel Plates

Khamari

Sahu

Biswal

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In order to perform arc welding, mild steel plates of variable thickness i.e. 5 mm, 6 mm and 8mm has been chosen as parent material. Total nine numbers of experiments were conducted by considering the two factors and three levels of design according to Taguchi method. The welding current and material thickness has been selected as variable input parameters with 5mm, 6 mm, 8mm level of material thickness and 90 A, 100A, 110A level of current respectively. The microstructure of the all the nine welded material has been analysed with the help of an optical microscope which is interfaced computer. The results of microstructure obtained from the microscopic investigation have been shown. The effect of current and material on the weldment microstructure is investigated. The result also shows that the coarse structure is formed in fusion zone and fine structure is formed in Heat affected region.

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“…Also, microalloyed rolling and rapid cooling cause to form non-polygonal or acicular ferrite and bainite which make further contribution to strengthen [19]. Particularly, titanium is added to these steels for controlling of the austenite grain size in the course of welding or reheating process [20,21].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Welding Parameters on Microstructural and Mechanical Properties of HSLA S960QL Type Steel with Submerged Arc Welding

Türker¹

2017

SDÜ Fen Bil Enst Der

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Abstract:In this study, S960QL steels were welded with submerged arc welding process in order to examine microstructural and mechanical properties. For the microstructural investigation, microscopical examination methods were used for weld zones. Tensile, impact toughness and micro hardness tests were made for different samples obtained from the weld zone and the base metal. The examinations of fracture surfaces were made by using optical microscope and scanning electron microscope. The flat type tensile strength values were near to the base materials. Charpy impact toughness tests were made for the base metal, the weld metal center line, the fusion line, the zone between weld metal centerline and the fusion line. Impact energy of the weld metal was obtained lower than the base metal. The lowest impact energy was obtained at the fusion line. Heat affected zone had the highest value in micro hardness tests. In microstructure evaluation, the interface of the fusion zone-heat affected zone and heat affected zone had coarser grain structure than the base metal. Alloy carbides dissolved because of the high temperature values occurred at heat affected zone. Tozaltı Ark Kaynağı Yöntemi

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Effect of increasing deposition rate on the bead geometry of submerged arc welds

Cited by 94 publications

References 1 publication

Avaliação do Uso do Tecimento na Soldagem a Arco Submerso

Avaliação do Uso do Tecimento na Soldagem a Arco Submerso

Microstructure Analysis of Arc Welded Mild Steel Plates

The Effect of Welding Parameters on Microstructural and Mechanical Properties of HSLA S960QL Type Steel with Submerged Arc Welding

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