Multipass Welding
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Comportamento de Juntas Soldadas de Aço C-Mn Obtidas Pelo Processo GMAW-RE com Eletrodo Rotativo
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 d
Soldag. insp.. Publicado em: 27/06/2019
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2. Effect of Residual Stresses of GTA Welding for Dissimilar Materials
The purpose of the present work is to understand the evolution of residual stresses in weldments. The study made to weld the multipass dissimilar of Nickel-based superalloy Inconel 625 and stainless steel 316L using Continuous Current Gas Tungsten Arc Welding (CCGTAW) and Pulsed Current Gas Tungsten Arc Welding (PCGTAW) process employing ERNiCrMo-3 and ERNiC
Mat. Res.. Publicado em: 25/06/2018
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3. Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
The microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to keep the phase balance after welding,the welding metal pres
Mat. Res.. Publicado em: 06/02/2017
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4. Revestimentos de liga de nÃquel depositados pelo processo TIG com alimentaÃÃo de arame frio: aspectos operacionais e metalÃrgicos / Nickel based alloys weld overlay deposited by gtaw cold wire feed: operational and metallurgical aspects
The weld overlay with nickel-based alloys is an interesting alternative for the construction and repair of equipments for applications in severe corrosive medium, allowing reach the desirable characteristics (corrosion resistance) with a significant reduction of cost. In this context, the GTAW cold wire feed process can be a good option for overlay depositio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2010
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5. Efeito do número de passes e do tratamento térmico pós-soldagem de liga de alumínio AA 6063 soldada por atrito linear com mistura (FSW). / Effect of multipass FSW welding of aluminum AA6063 and heat treating after welding.
O processo de soldagem por atrito linear com mistura (FSW) é uma técnica recente para a soldagem no estado sólido de materiais, em particular para o alumínio e suas ligas. O processo foi inventado na Inglaterra em 1991. Neste processo, as partes a serem soldadas são fixadas e uma ferramenta especial realiza a soldagem de forma contínua. A ferramenta po
Publicado em: 2009
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6. The effect of the intercritical heat tretament on the microstructure and mechanical properties of the API 5L X65 steel / Influencia de tratamentos termicos intercriticos na microestrutura e propriedades mecanicas do aço API 5L X65
The intercritical heat treatment effect on the microstructure and mechanical properties of the API 5L X65 steel, widely used in oil and gas pipeline, was investigated. Many researchers have suggested the existence of local brittle zones in the intercritical heat treatment zone (haz) of C-Mn and HSLA (high strenth low alloy) steels of single and multipass wel
Publicado em: 2006
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7. Analytical modeling of multipass welding process with distributed heat source
In the welding process, the most interesting regions for heat transfer analysis are the fusion zone (FZ) and the heat affected zone (HAZ), where high temperatures are reached. These high temperature levels cause phase transformations and alterations in the mechanical properties of the welded metal. The calculations to estimate the temperature distribution in
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-09
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8. PrevisÃo da dureza em junta soldada de um aÃo ASTM A 516 grau 60 sujeito à corrosÃo sob tensÃo com H2S
The objective of the paper is to analyze the strength profile of a multi-pass junction in the ZAC and MS regions. The process which has been used takes into account the Submerged Arc Welding (SAW), and refers to the standard welding procedure within the manufactured material. The welding maximum strength with a thermal input of 19,44 kJ/cm has been considere
Publicado em: 2003
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9. Precipitação de fases intermetálicas e austenita secundária na ZAC de soldagens multipasse de aços inoxidáveis duplex. / Intermetallic phases and secondary austenite precipitation at the multipass welding HAZ of duplex stainless steels.
Duplex stainless steels (DSS) have excellent mechanical and corrosion properties. Many researches have been developed regarding the weldability of these alloys. There are some phase transformations that take place during the welding process, which may impair the welded joint behavior. High temperature heat-affected zone (HTHAZ) microstructures were simulated
Publicado em: 2001
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10. Estudo da precipitação de nitreto de cromo e fase sigma por simulação térmica da zona afetada pelo calor na soldagem multipasse de aços inoxidáveis duplex. / Chromium nitride and sigma phase precipitation study by heat-affected zone thermal simulation of duplex stainless steels multipass welding.
Duplex stainless steels belong to a group of high performance stainless steels regarding to corrosion and mechanical properties. These achievements are related to a suitable chemical composition and a balanced microstructure. During welding thermal cycles the microstructure changes and, consequently, corrosion and mechanical properties might be impaired due
Publicado em: 1997
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11. Solução analitica para distribuição de temperatura no processo de soldagem MIG com multiplos passes
Although heat transfer in welding is a fairly well studied topic, there is not much literature about multipass process, necessary for the welding of thick plates, which are generally used as primary components of weldments. During multipass welding process, the material undergoes quick cycles of heating and cooling, and the heat affected zone ( HAZ ) suffers
Publicado em: 1997