Cold Wire
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Influence of a cold deformation process by drawing on the electrical properties of copper wires
Abstract This article presents a study of the drawing, deformation, hardening and heat treatment of copper wire, in order to investigate the influence of combinations of operating variables (annealing factor, oil emulsion temperature and machine speed) during the drawing process on the electrical conductivity of copper wires. The results showed that when the
REM, Int. Eng. J.. Publicado em: 2017-03
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2. Microstructure and Abrasion Resistance of Fe-Cr-C and Fe-Cr-C-Nb Hardfacing Alloys Deposited by S-FCAW and Cold Solid Wires
Abstract This work assesses the wear resistance behavior of different high Cr and Nb alloyed hardfacing deposits carried out by Self-shielded Flux Cored Arc Welding, considering the resulting microstructures as base for the analysis. To obtain non-commercial alloys, an “in-situ” technique was employed with addition of cold wire into the weld pool. Six co
Soldag. insp.. Publicado em: 2016-09
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3. Estudo do Processo TIG Hot-Wire com Material de Adição AISI-316L Analisando o Efeito do Sopro Magnético do Arco sobre a Diluição do Cordão de Solda
Resumo: O processo TIG com adição de arame quente (HotWire) é considerado um processo altamente produtivo em comparação ao processo TIG convencional com arame frio (ColdWire), sendo possível alcançar grandes taxas de deposição e baixas porcentagens de diluição, características essas que permitem ao processo ser uma ótima alternativa para aplica�
Soldag. insp.. Publicado em: 2016-09
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4. Uma Contribuição ao Estudo do Processo TIG Cold Wire na Posição Plana, Horizontal e Sobrecabeça sob Novos Desenhos de Tocha e Metodologias de Alimentação de Arame
Resumo Esta linha de pesquisa surge para melhorar o atual procedimento na soldagem de tubos de caldeiras, onde são utilizados processos de soldagem manual e a qualidade das uniões soldadas depende exclusivamente da habilidade do soldador. Neste sentido, a proposta consiste em realizar a reparação com um processo de soldagem mais produtivo denominado de T
Soldag. insp.. Publicado em: 2015-09
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5. Influência dos procedimentos e modos de transferência no processo MAG na redução de deformações em painéis de estruturas navais
Juntamente com o crescimento da indústria naval brasileira surgiram problemas provenientes dos processos de produção na forma de distorções e tensões residuais. Neste trabalho foi estudada a influência de procedimentos de soldagem (sequência e direção de soldagem e uso do passe reverso) e modos de transferência (MAG-CC, MAG-STT e MAG-CW) sobre os
Soldag. insp.. Publicado em: 2013-12
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6. Analysis by design of experiments of distortion potentials in drawn and induction hardened wire
In this investigation a DoE (Design of Experiments) analysis of distortion for a typical manufacturing process of pre-straightened, cold drawn and induction hardened AISI 1045 cylindrical steel bars was carried out. A careful characterization of the material, including residual stress states and geometrical changes, was done for the different manufacturing s
Materials Research. Publicado em: 24/02/2012
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7. 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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8. Estudo exploratÃrio de parÃmetros de soldagem de revestimentos com ligas de NÃquel empregando o processo TIG com alimentaÃÃo de arame frio / Exploratory study of coating welding parameters with nickel alloys using GTAW with cold wire feeding
The aim of this work was to carry out a systematic study of GTAW welding parameters with feeding of cold wire for covering application of nickel alloys (UNS N06625, UNS N06686 and UNS N10276) in substract of steel C-Mn considering the analysis of geometric, economic and operational characteristics of layers, form to adjust these coverings for the industries
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/01/2009
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9. Effect of immediate and delayed post space preparation on the apical seal of root canals obturated with different sealers and techniques
During mechanical preparation of the post space, the root canal filling may be twisted or vibrated, depending on several factors associated with the preparation technique and quality of filling. OBJECTIVE: The purpose of this study was to investigate the effect of immediate and delayed post space preparation on the integrity of the apical seal. MATERIAL AND
Journal of Applied Oral Science. Publicado em: 2009-12
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10. Determinação de Sn(II) por polarografia: aplicação no controle de qualidade de reagentes liofilizados para radiodiagnóstico / Polarographic determination of Sn(II): application in the quality control of radiopharmaceutical reagents
Stannous chloride (SnCl2.2H2O) is the major compound used for reduction of generator-derived 99mTc-pertechnetate in cold kits for on site preparation of 99mTc-radiopharmaceuticals. These cold kits usually contain a ligand, stannous chloride, and different additives. Various techniques were described for tin determination, but they cannot distinguish between
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2008
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11. Mechanical behaviour of copper 15% volume niobium microcomposite wires
Cu-Nb microcomposites are attractive in magnet pulsed field technology applications due to their anomalous mechanism of mechanical strength and high electrical conductivity. In this sense, recently it was conceived the use of Cu 15% vol. Nb wires to operate as a high tensile strength cable for a diamond cutting tool (diamond wires) for marble and granite sla
Materials Research. Publicado em: 2001
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12. Influencia do tipo de carregamento sobre a resistencia da união ao cisalhamento da interface dentina-resina
The purpose of this study was to compare the influence of the orthodontic looped wire, stainless steel tape, and chisel-shaped rod systems used in shear bond tests to verify the dentin-resin interface bond strength. 48 human teeth divided in 3 groups were used. The roots were seccioned and the dental crowns embedded in cold acrylic resin cure. The teeth were
Publicado em: 1997