Weldability
Mostrando 13-24 de 33 artigos, teses e dissertações.
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13. Soldabilidad de Polietileno de Alta Densidad Usando Soldadura por Fricción-agitación con una Herramienta de Hombro no Rotacional
Abstract: In this work was studied the weldability of high density polyethylene (HDPE) using friction stir welding (FSW) process, and two kind of tools, denominated conventional, and non-conventional tool, which has a non-rotating shoulder. Evaluation was performed using combination of parameters of rotation speed (vW) and welding speed (vA), which were adju
Soldag. insp.. Publicado em: 2016-12
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14. Influence of Heat Input and Filler Metal on Mechanical Properties and Microstructure of Microalloyed High Strength Steel Welded by FCAW
AbstractCurrently, microalloyed high strength steels are being widely used to replace C and C-Mn steels for their advantages in terms of mechanical properties, corrosion resistance and weldability, allowing weight reduction of vehicles and structures without impairing their strength. When these steels are welded, the welding heat cycle causes microstructural
Soldag. insp.. Publicado em: 2015-06
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15. Effect of Continuous and Pulsed Current on the Metallurgical and Mechanical Properties of Gas Tungsten Arc Welded AISI 4340 Aeronautical and AISI 304 L Austenitic Stainless Steel Dissimilar Joints
In this research work, the weldability of low alloyed AISI 4340 aeronautical steel and AISI 304L austenitic stainless steel joined by continuous current (CC) and pulsed current (PC) gas tungsten arc welding (GTAW) techniques, using ER309L and ERNiCr-3 filler metals was investigated. The main focus of the study involves the investigation on the effect of cont
Mat. Res.. Publicado em: 2015-02
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16. Influencia de las mezclas de gases Ar-He y Ar-He-O2 en la soldabilidad de la aleación de aluminio AA5083-O usando Proceso GMAW-P automatizado
Problems of industries and manufacturers of welded structures in aluminum alloys are centered on reduction of mechanical properties in welded joints due to heat input effects on heat affected zone (HAZ); as well as, effects of discontinuities and metallurgical defects, high cost repairs, and low productivity. The aim of this work is to evaluate the influence
Soldag. insp.. Publicado em: 2014-09
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17. Weldability studies and parameter optimization of AISI 904L super austenitic stainless steel using friction welding
Welding input parameters play a very significant role in determining the quality of a weld joint. The quality of the joint can be defined in terms of mechanical properties, distortion and weld-bead geometry. Generally, all welding processes are employed with the aim of obtaining a welded joint with the desired characteristics. The purpose of this study is to
Mat. Res.. Publicado em: 04/07/2014
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18. Optimization and non-destructive test analysis of SS316L weldments using GTAW
This work aims at optimization and analysis of SS316L weldments using TIG Welding, SS316L is selected over other grades because of its lower carbon content and its weldability properties. The welding parameters are being assessed by means of Taguchi's L9 orthogonal array with varying gas flow, current and bevel angle with the predictions achieved the sample
Mat. Res.. Publicado em: 15/11/2013
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19. Characterization of NiCrAlC PTA coatings
Surface tailoring with plasma transferred arc (PTA) hardfacing involves the deposition of powder mixtures to produce coatings with an almost unlimited chemical composition. PTA hardfacing is particularly important for processing low weldability alloys, such as those for high-temperature applications, of which NiCrAlC is an example. This study analyzed NiCrAl
Mat. Res.. Publicado em: 16/08/2012
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20. Estudo de aço microligado ao vanádio para a produção de barra nervurada para concreto armado com característica de soldabilidade segundo norma ABNT NBR 8965:1985
This paper presents a vanadium microalloyed steel for the production of reinforced bars (rebars) that meets the chemical composition limits established by Brazilian standards to be considered weldable. Steel is produced via electric furnace, giving rise to billets. It is hot rolled in a rolling mill and cooled in air to obtain the rebar that meets the mechan
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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21. Numerical evaluation of the weldability of the low alloy ferritic steels T/P23 and T/P24
A model based on transport equations was numerically implemented by the finite volume method (FVM) in a computational code in order to simulate the influence of the heat input, base metal thickness and preheating temperature on the thermal evolution and the cooling rate during the welding of the low alloy ferritic steels T/P23 and T/P24. As a consequence, it
Materials Research. Publicado em: 01/04/2011
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22. Caracterização de fases intermetálicas presentes em aço galvanizado por imersão a quente com tratamento térmico do revestimento metálico
Hot dip galvanized steels with thermal treatment, or galvannealed steels, are used in automotive industries because of their properties of weldability, workability, and corrosion resistance. The hot dip galvanized steel with thermal treatment is called as galvannealed. The zinc layer of galvannealed steels have iron-zinc intermetallic phases, depending on th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2010
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23. Influência do gás de proteção na soldabilidade do aço inoxidável ferrítico aplicado a sistema de exaustores automotivos / The Shielding Gas Influence on the Weldability of Ferritic Stainless Steel Utilized in Automotive Exhaust Systems
A indústria de exaustores automotivos passou por diversas evoluções ao longo dos últimos 20 anos com o intuito de atender a demanda por controles mais severos de emissões de gases poluentes, devido à necessidade de maior durabilidade, de aumento da eficiência do motor e de reduções de peso e custo. Com este intuito, os aços inoxidáveis ferríticos
Publicado em: 2010
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24. Estudo da soldabilidade do tubo API 5L X80 utilizando os processos de soldagem: MAG com transferência controlada e eletrodo tubular. / Study of the weldability of API 5L X80 pipe using the gmaw-stt and fcaw welding process.
Os tubos API 5L X80, construídos com aços alta resistência e baixa liga, são especificados para a construção de dutos para transporte de petróleo e derivados sob alta pressão, com conseqüente redução no peso dos tubos. O processo mais empregado para a soldagem circunferencial de tubos em campo no Brasil é o processo com eletrodo revestido, tanto
Publicado em: 2010