Wire Drawing
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Efeitos da Espessura da Fita Metálica no Metal de Solda Utilizando Cavacos de Titânio Como Componentes do Fluxo em Arames Tubulares para a Formação de TiC
Resumo Cavacos de titânio foram utilizados como componentes do fluxo em arames tubulares fabricados a partir da conformação e trefilação de fitas metálicas com espessuras diferentes. Os arames apresentaram diâmetros internos com dimensões diferentes afetando as taxas de preenchimento do fluxo. Para as mesmas condições de soldagem, os arames fabric
Soldag. insp.. Publicado em: 02/12/2019
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2. The Wire Drawing Mechanics of Near-Equiatomic NiTi SMA
The wire drawing mechanic of Ti-49.82Ni (at. %) Shape Memory Alloy (SMA) was investigated through the true stress-strain curves and drawing stresses. The tensile tested solution treated wire presented a four steps elongation at temperatures below the austenite finish temperature (AF), and a conventional one-step behavior above the martensite deformation temp
Mat. Res.. Publicado em: 26/03/2018
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3. Strain Hardening of Carbon Steel During Wire Drawing
The Avitzur's limit analysis for the calculation of the drawing force in a wire drawing process is used to study the real behaviour of a carbon steel in an industrial case. The linear hardening assumption, used by Avitzur only for the first step, is extended to the whole process and tested against experimental data. The result shows that the predictions resu
Mat. Res.. Publicado em: 12/03/2018
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4. Experimental Analysis of Residual Stresses in Pre-Straightened SAE 1045 Steel
This paper aims at analyzing the effects of the roller pre-straightening of wire-rods on residual stress distributions in SAE 1045 steel bars. The combined drawing process is used in industrial production of bars in order to obtain a good surface quality and improved mechanical properties complying with specifications of the final products. In this process,
Mat. Res.. Publicado em: 24/08/2017
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5. 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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6. Microstructural evaluation on shape recovery in stainless Fe-Mn-Si-Cr-Ni-Co SMA processed by wire drawing
The effect of the microstructure on the shape recovery in stainless Fe-8Mn-5Si-13Cr-6Ni-12Co shape memory steel (SSMS) was evaluated using tensile tests and reversion temperature of 600ºC for a pre-strain of 4%. The tests were performed for a solution treated and annealed conditions at different temperatures after wire drawing of 57% area reduction. The bes
Mat. Res.. Publicado em: 30/05/2014
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7. Relationship between friction force and orthodontic force at the leveling stage using a coated wire
The relationship between orthodontic force and friction produced from an archwire and brackets affects the sliding of the wire in the leveling stage. Objective: The purpose of this study was to evaluate the relationship between force and friction in a small esthetic nickel-titanium (Ni-Ti) wire. Material and Methods: Five esthetic wires (three coated a
J. Appl. Oral Sci.. Publicado em: 2013-12
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8. Comparison between Neutron Diffraction measurements and numerical simulation of residual stresses of a Wire-Drawing process
In this work, a drawing processed was simulated to calculate forces and the resulting residual stresses in the material. The calculated residual stresses were compared with experimentally measured residual stresses by the Neutron Diffraction Method. The modeled process was the Wire Drawing. The necessary parameters to model the process were taken from an ind
Mat. Res.. Publicado em: 08/02/2013
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9. 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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10. Heterogeneidades mecânicas e microestruturais durante o processo de trefilação combinada do aço SAE 1045
Este trabalho estuda o processo de trefilação combinada do aço SAE 1045, que consiste nas etapas de pré-endireitamento com múltiplos rolos, jateamento, trefilação, corte e endireitamento por rolos, tendo como produto final barras acabadas trefiladas. Este produto final é empregado na fabricação de hastes de amortecedores para indústria automotiva.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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11. Análise da lubrificação seca para trefilação e proposta de padronização de lubrificantes para arame de médio carbono / Analysis of dry lubrication on wire drawing and proposal for standardization of lubricants for medium-carbon wire
Este trabalho apresenta um estudo sobre lubrificação seca para um arame ovalado 15x17 (2,40 x 2,90mm) de médio carbono em uma máquina de 7 passes de redução. Foram analisados dois tipos de lubrificantes utilizados na trefilaria da Gerdau Riograndense, um sabão a base de cálcio e outro a base de sódio, com o objetivo de identificar o tipo de lubrific
Publicado em: 2010
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12. Estudo do processo de recozimento em linha de galvanização : caracterização e implicações inerentes ao arraste de chumbo
O presente trabalho descreve os resultados obtidos a partir de análises do processo de trefilação de arames e posterior recozimento destes em forno de chumbo. Baseado na metodologia DOE, busca-se o entendimento da ocorrência do arraste de chumbo proveniente dos arames recozidos, com o objetivo de minimizar este problema. Amostras de arame foram coletadas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010