Brazing
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Systematic review and meta-analysis of welding procedures in one-piece cast implant-supported frameworks
Abstract The objective of this systematic review and meta-analysis was to evaluate the effect of welding techniques on implant-supported prostheses and determine whether they contribute to a better adaptation compared with a one-piece cast. A search was conducted using the PubMed/MEDLINE, Embase, and Cochrane Library databases, and articles published until N
Braz. oral res.. Publicado em: 25/11/2019
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2. Aplicação da Metodologia para Qualificação de Procedimentos de Soldagem de Tubulações Industriais Conforme Parâmetros dos Códigos ASME B31.3 e ASME SECTION IX*
Resumo Este trabalho foi desenvolvido visando auxiliar os profissionais de soldagem quanto as incertezas relacionadas às atividades de fabricação, montagem e manutenção de tubulações em plantas industriais no qual se refere à maneira adequada para a condução de atividades de qualificação de procedimentos de soldagem. Discorre sobre a metodologia
Soldag. insp.. Publicado em: 21/10/2019
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3. Microstructure and Fracture of 50Mo-50Re Vacuum Brazed with Fe-Si-B Filler Metal
Microstructural evolution, interfacial reaction and fracture during vacuum brazing of 50Mo-50Re alloys using amorphous alloy Fe-5.6Si-2.6B(wt%) were investigated. A binary intermetallic compound, σ(Mo2Re3) formed as parallel contiguous layers in the diffusion zone. In addition, Fe from the braze alloy, in combination with dissolved Mo from the substrate, fo
Mat. Res.. Publicado em: 30/09/2019
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4. Microstructure and Properties of 3D Printed Inconel 718 Joint Brazed with BNi-2 Amorphous Filler Metal
Three dimensional (3D) printing technology has been widely used in metal manufacturing industry. This study focused on the vacuum brazing of 3D printed Inconel 718 superalloy with BNi-2 amorphous filler metal. Interfacial microstructure and element distribution revealed excellent wettability and spreadability of the filler metal as well as favorable brazabil
Mat. Res.. Publicado em: 14/11/2018
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5. Análisis de la corrosión de uniones por soldadura fuerte de compósitos matriz cobre
ABSTRACT This work presents an electrochemical corrosion study in synthetic seawater of the dissimilar joint of TiC/Cu composite by brazing technique. Composites were machined by liquid infiltration without external pressure. This composite were joined with copper using a filler material constituted by an alloy of silver - copper and titanium powder. The com
Matéria (Rio J.). Publicado em: 19/07/2018
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6. Gaseous Shielding Gas Additives as Flux Substitute for TIG Arc Brazing
Abstract Brazing is one of the key technologies in the field of joining of metal components. To improve the wetting of brazing material and work-piece surface, it is often required to fall back on the use of flux. The application of these substances requires accuracy and is often connected with considerable expenditure and it is, just as the removal of flux
Soldag. insp.. Publicado em: 2015-09
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7. Synthesis and characterization of Ni-Mo filler brazing alloy for Mo-W joining for microwave tube technology
A brazing process based on Ni-Mo alloy was developed to join porous tungsten cathode bottom and dense molybdenum cathode body for microwave tubes manufacture. The Ni-Mo alloy was obtained by mixing and milling powders in the eutectic composition, and applied on the surface of the components. The brazing was made at 1400 °C by using induction heating in hydr
Mat. Res.. Publicado em: 08/02/2013
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8. Retrieval analysis of different orthodontic brackets: the applicability of electron microprobe techniques for determining material heterogeneities and corrosive potential
OBJECTIVE: The objective of this study was to investigate the applicability of micro-analytical methods with high spatial resolution to the characterization of the composition and corrosion behavior of two bracket systems. MATERIAL AND METHODS: The surfaces of six nickel-free brackets and six nickel-containing brackets were examined for signs of corrosion an
J. Appl. Oral Sci.. Publicado em: 2012-08
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9. Avaliação da confiabilidade dos evaporadores automotivos submetidos ao processo de rebrasagem / Evaluation of the rebialibity of the automotive evaporators submitted to the rebrazing process
Esta avaliação buscou validar a técnica de retrabalho utilizada no processo de fabricação de evaporadores automotivos, onde a falha na operação de brasagem e tratamento térmico é um dos principais motivos para o alto índice de sucata. A técnica de retrabalho consiste em refazer a operação de brasagem e tratamento térmico nos evaporadores que ap
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2011
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10. Metalização mecânica de ZrO2 com Ti para brasagem ZrO2/Aço com ligas de adição sem metal ativo
As interfaces metal/cerâmicas utilizando zircônia têm dominado as aplicações industriais na última década, em virtude da alta resistência mecânica e tenacidade à fratura da zircônia, especialmente em temperaturas abaixo de 300 C. Destaca-se também a boa condutividade iônica em temperaturas elevadas deste componente. No presente trabalho, estudou
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2011
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11. Avaliação da resistência a flexão de ligas de Titânio (Ti6Al4V) soldadas com diferentes configurações pelo processo Plasma
Este trabalho teve por objetivo avaliar o comportamento mecânico de barras de Ti-6Al- 4V de 3,18mm de diâmetro soldadas em diferentes regulagens, para determinar os parâmetros ótimos na utilização da máquina de solda plasma e compará-los com corpos de prova de níquel cromo (NiCr) soldados pelo processo de brasagem. Os 50 corpos de prova (n=10) foram
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2011
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12. Corrosion in Haas expanders with and without use of an antimicrobial agent: an in situ study
OBJECTIVES: The purpose of this study was to evaluate in situ the occurrence of corrosion in the soldering point areas between the wire, silver brazing and band in Haas expanders. MATERIAL AND METHODS: Thirty-four 7-12-year-old patients who needed maxillary expansion with a Haas expander were randomly assigned to two groups of 17 individuals each, according
Journal of Applied Oral Science. Publicado em: 2011-12