Plasma Arc Welding
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Effect of Plasma Arc Welding on Residual Stress and Distortion of Thin Titanium Sheet
In this research work, a finite element model is developed to predict the temperature field and residual stress during plasma arc welding of thin Ti-6Al-4V sheets. Dhinakaran’s heat source model which is based on Parabolic Gaussian distribution is used to predict the temperature field and Anand’s model is used to predict the residual stress. Numerical si
Mat. Res.. Publicado em: 20/01/2020
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2. Vida a fatiga de uniones soldadas mediante PAW de aceros microaleados al boro
ABSTRACT In the last years microalloyed boron steels have been adopted in the automotive industry to achieve weight reductions. Namely, they are used as load-bearing elements such as pillars and reinforcements, in a quenched and tempered (QT) condition with tensile strength ranging from 800 to 1300 MPa. Dual-Phase (DP) steels have also been introduced in thi
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Evaluation of Residual Stresses and Mechanical Properties of IF Steel Welded Joints by Laser and Plasma Processes
Interstitial free (IF) steel has an extensive application in the automotive industry where the Laser Beam Welding (LBW) process is widely used due to its high productivity. Similarly, the other used process, Plasma Arc Welding (PAW), is characterized by a greater energy concentration and current density and therefore lower distortion, higher welding speeds a
Mat. Res.. Publicado em: 29/04/2016
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4. Development of a Powder-feed Device and Procedures for the Application of an Experimental Alloy in Overhead PTA-P Welding
Abstract: When they are damaged by cavitation, hydroelectric power plant turbine blades must be repaired using operations that could benefit from developments in welding technologies. In light of this, the LABSOLDA welding laboratory at the Federal University of Santa Catarina is making efforts to enhance the flexibility and robustness of the powder-fed plas
Soldag. insp.. Publicado em: 2015-12
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5. Mechanical strength and analysis of fracture of titanium joining submitted to laser and tig welding
This study compared the tensile strength and fracture mechanism of tungsten inert gas (TIG) welds in cylindrical rods of commercially pure titanium (cp Ti) with those of laser welds and intact samples. Thirty dumbbell-shaped samples were developed by using brass rods as patterns. The samples were invested in casings, subjected to thermal cycles, and position
Mat. Res.. Publicado em: 09/10/2012
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6. Effect of current and atomized grain size distribution on the solidification of Plasma Transferred Arc coatings
Plasma Transferred Arc (PTA) is the only thermal spray process that results in a metallurgical bond, being frequently described as a hardfacing process. The superior properties of coatings have been related to the fine microstructures obtained, which are finer than those processed under similar heat input with welding techniques using wire feedstock. This ob
Mat. Res.. Publicado em: 16/08/2012
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7. Application of design of experiments to plasma Arc Welding Process: a review
Design of Experiment commonly referred to as DOE is one of the extensively used methods for experimental study of many manufacturing processes in engineering. DOE is a statistical approach in which a mathematical model is developed through experimental runs. DOE predicts possible output based on the input parameters of the experimental setup. In the present
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-03
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8. Soldadura de aceros dual phase en chapa fina: GMAW, PAW y RSW
Dual Phase steels (DP) have been used recently as an interesting option for structural elements, specialy in automotive industry, due to weight reduce requirements. Welding of these materials becomes particularly important considering their application as structural elements and the related manufacturing methods. In particular resistance spot welding (RSW) a
Soldagem & Inspeção. Publicado em: 2011-06
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9. Estudo comparativo de três ligas austeníticas com cobalto resistentes à cavitação depositadas por plasma pulsado térmico
A necessidade de diminuição dos tempos de parada e custos de manutenção de turbinas geradoras de energia elétrica tem motivado o desenvolvimento de novos materiais e processos de recuperação de áreas cavitadas. Atualmente diferentes processos automatizados de soldagem vêm sendo estudados, principalmente a soldagem por plasma de arco transferido, PTA
Soldagem & Inspeção. Publicado em: 2010-03
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10. Desenvolvimento de procedimento utilizando processo de soldagem plasma para confecção de sementes de Iodo125 / Development of a procedure using plasma welding process to produce 125I seeds
The prostate cancer, which is the second cause of death by cancer in men, overcome only by lung cancer, is a problem of public health in Brazil. Brachytherapy is among the possible available treatments for prostate cancer, in which small seeds containing 125I radioisotope are implanted in the prostate. The seed consists of a titanium sealed capsule with 0.8
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2006
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11. Proposal for a modified fowler-milne method to determine the temperature profile in TIG welding at low currents
It is possible to assess the thermal efficiency of welding shielding gases by means of the arc temperature field analysis. Since this approach opens a remarkable study field to assess different shielding gases, giving support for dealing with advantages and disadvantages of commercial gas mixtures, there is a research line under development, which goal is to
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-03
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12. Análise e modelagem empírica do processo de soldagem a plasma com Keyhole em aço inoxidável / Analysis and empirical modeling of the Keyhole plasma welding process of stainless steel
O processo de soldagem a plasma (PAW Plasma Arc Welding) vem recebendo, nos últimos anos, uma aceitação significativa para seu uso em aplicações automatizadas, principalmente em países desenvolvidos. Isto tem estimulado em grande parte a realização de pesquisas científicas que visam o entendimento dos fenômenos físicos envolvidos no processo. Atua
Publicado em: 2003