Methodology for predicting the angular distortion in multi-pass butt-joint welding

Adamczuk, Paulo Cezar; Machado, Ivan Guerra; Mazzaferro, José Antônio Esmerio

doi:10.1016/j.jmatprotec.2016.10.006

Cited by 31 publications

(25 citation statements)

References 10 publications

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“…Adamczuk et al 16 experimentally analyzed the angular distortions in multipass welded thick steel plates using four different heat inputs that varied between 0.6 and 2.5 KJ/mm, and they proposed appropriate analytical solutions. Hashemzadeh et al 17 numerically and experimentally investigated temperature distributions during the welding and postweld deflections in thin stainless steel plates of dissimilar thicknesses.…”

Section: Discussionmentioning

confidence: 99%

“…Kung et al proposed a novel method for analyzing residual stresses and deformations in butt‐welded thin stainless plates using a numerical method to find the best location for jig fixtures that would minimize welding deformation. Adamczuk et al experimentally analyzed the angular distortions in multipass welded thick steel plates using four different heat inputs that varied between 0.6 and 2.5 KJ/mm, and they proposed appropriate analytical solutions. Hashemzadeh et al numerically and experimentally investigated temperature distributions during the welding and postweld deflections in thin stainless steel plates of dissimilar thicknesses.…”

Section: Introductionmentioning

confidence: 99%

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Numerical prediction and experimental validation of temperature and residual stress distributions in buried‐arc welded thick plates

et al. 2019

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Summary The paper deals with the numerical simulation and experimental investigations of a buried‐arc welding process on a butt‐welded plate sample. In the numerical investigations, the finite element analysis is carried out by applying the element birth and death technique in the thermal analysis, while the mechanical analysis is performed simultaneously in one step to reduce simulation time. The temperature history at two locations is recorded with thermocouples, while residual stresses are measured by using the hole‐drilling stress relaxation method at four points. The heat input efficiency for the buried‐arc welding process is determined by using a parametric analysis. The numerically obtained temperatures and residual stresses correspond very well with the experimental measurements. Furthermore, by using buried‐arc welding, 73% of the weld filler material is saved and 59% of energy, whereas the CO2 emission to the atmosphere is reduced by 83% in comparison with conventional metal active gas welding for a model of the same dimensions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical prediction and experimental validation of temperature and residual stress distributions in buried‐arc welded thick plates

et al. 2019

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“…where A: bead area, C = 3wε Y ·A p /A. Equation (8) indicates that the angular distortion by welding is proportional to the bead area and inversely proportional to the square of thickness and degree of constraint only for materials with sufficient thickness when compared to the heated part. Here, the degree of constraint K must be 1 or above, and constant C depends on the material properties of the base metal and wire, the wire diameter, and the welding process.…”

Section: Mechanics Of Welding Distortionmentioning

confidence: 99%

“…In addition, they proposed a simple method for predicting the final distortion by considering the measured weld deposition rate. Adamczuk et al [8] proposed a method for predicting the angular distortion of V groove welding by using curve fitting from the experimental results of butt multi-pass welding. They derived relationships between heat input, geometry, and distortion.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model for Angular Distortion in Multilayer Welding under Constraints

2020

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We propose an analytical model for the fast prediction of angular distortion that is caused by practical multilayer (or multi-pass) butt welding under constraints. To this end, the relationships between angular distortion, bead size, thickness, and degree of constraint are derived by analyzing the welding deformation mechanism and considering the bead-on-plate welding experimental results. Prediction curves are then obtained while considering the geometry of the butt welding joint. We verify the formulas through experiments under various constraint conditions, with different welding joint geometries, heat inputs, and thicknesses. The proposed model can not only predict angular distortion in butt joints of various shapes, but also allows for providing restraint methods and welding sequences for minimizing distortion.

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“…Adamczuk et al (2017) desenvolveram, mediante observações experimentais, uma metodologia para prever distorções angulares em junta de topo com chanfro em V para soldas multipasse. Farkas e Jármai (2007) propuseram um método para o cálculo de deflexão longitudinal de vigas de seção constante e variável, e cordões depositados excentricamente (excentricidade entre centro de massa do cordão de solda e centro de massa da junta), trazendo também formulações baseadas na mecânica elástica onde aproxima a tensão necessária para deformar a aba de forma a compensar a distorção causada pela soldagem.…”

Section: Análise Da Influência Da Espessura De Aba Espessura De Almaunclassified

Análise da Influência da Espessura de Aba, Espessura de Alma e Energia de Soldagem sobre as Distorções Angulares em Juntas em Ângulo de Filete

2017

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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. Resumo: Este trabalho utilizou metodologia proposta por teorias de Projeto de Experimentos para quantificar o efeito da energia de soldagem, espessura da aba e espessura da alma na distorção angular em juntas de filete soldadas pelo processo MIG/MAG com modo de transferência curto-circuito. A Análise de Variância identificou como significativos o efeito da energia de soldagem, da espessura da aba e a interação dos fatores energia de soldagem e espessura da aba. Observou-se menores distorções para a combinação de maior energia de soldagem e menor espessura de aba, e para menor energia de soldagem e maior espessura de aba. Adicionalmente, demonstrou-se que o gradiente de temperatura na aba da junta não determina a máxima distorção angular, e sim a máxima temperatura atingida na superfície inferior da aba, com máxima distorção angular obtida para temperatura atingida de 425 °C em ponto na superfície inferior da aba e paralelo à margem do cordão.Palavras-chave: Distorção angular; Box-Behnken; GMAW. Analysis of the Influence of Flange Thickness, Web Thickness and Heat Input on Angular Distortions in Fillet JointsAbstract: This work uses a methodology proposed by Experimental Design theories to quantify the effect of heat input, flange thickness and web thickness on angular distortion in welded T-joints by the MIG / MAG process with short-circuit transfer mode. The analysis of Variance identified as significant the effect of the heat input, the thickness of the flange and the interaction of the factors of heat input and thickness of the flange. Minimum distortions were observed for the combination of higher heat input and lower flange thickness, and for lower heat input and higher flange thickness. Additionally, it was demonstrated that the temperature gradient in the flange does not determine the maximum angular distortion, but the maximum temperature reached in the lower surface of the flange, with maximum angular distortion obtained for a temperature reached of 425 °C in point in the lower surface of the flange and parallel to the edge of the weld bead.Key-words: Angular distortion; Box-Behnken design; GMAW. IntroduçãoO método de união através de soldagem a arco elétrico é realizado a partir do fornecimento de energia concentrada e direcionada às partes que deseja-se unir, de forma que essa seja capaz fundir localmente o metal de base e o metal de adição (quando houver). Este é, sem dúvida, o processo de união mais utilizado nas indústrias do setor secundário por produzir uniões confiáveis, estanques e resistentes, e redução de peso quando comparado a outros métodos de união.É importante o entendimento dos efeitos causados pelo elevado fluxo de energia sobre a integridade funcional dos componentes soldados devido a alterações metalúrgicas e dime...

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Methodology for predicting the angular distortion in multi-pass butt-joint welding

Cited by 31 publications

References 10 publications

Numerical prediction and experimental validation of temperature and residual stress distributions in buried‐arc welded thick plates

Numerical prediction and experimental validation of temperature and residual stress distributions in buried‐arc welded thick plates

Analytical Model for Angular Distortion in Multilayer Welding under Constraints

Análise da Influência da Espessura de Aba, Espessura de Alma e Energia de Soldagem sobre as Distorções Angulares em Juntas em Ângulo de Filete

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