DOI: 10.11606/d.85.2014.tde-28012015-150337
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Processamento e caracterização de aços sinterizados para uso em insertos de assentos de válvulas

Abstract: The aim of this study was to propose potential materials for use in the automotive industry, specifically alloys applied in the production of valve seat inserts. The research was divided in steps according to standard powder metallurgy technique: selecting components for the studied alloys, acquisition and preparation of each of the metal powders, physical and microscopic characterization of the components, defining the proportions to be used, a mixture of alloys, compaction in uniaxial presses, sintering the … Show more

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Cited by 2 publications
(3 citation statements)
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“…The inserts sintering process have been performed in a continuous industrial belt conveyor furnace, in solid state, under a controlled atmosphere constituted of 70 % hydrogen and 30 % nitrogen. The inserts were submitted to a preheat process for 35 minutes at 600 ºC to ensure the whole Zn stearate elimination, and then the inserts were sintered at 1,150 ºC during 40 minutes [4]. …”
Section: Inserts Manufacturementioning
confidence: 99%
“…The inserts sintering process have been performed in a continuous industrial belt conveyor furnace, in solid state, under a controlled atmosphere constituted of 70 % hydrogen and 30 % nitrogen. The inserts were submitted to a preheat process for 35 minutes at 600 ºC to ensure the whole Zn stearate elimination, and then the inserts were sintered at 1,150 ºC during 40 minutes [4]. …”
Section: Inserts Manufacturementioning
confidence: 99%
“…Os VSI utilizados no presente trabalho foram previamente obtidos por Santos (2014), que utilizou-se da técnica da metalurgia do pó para obter tais componentes. Os itens 4.1.1 a 4.1.5 foram sumarizados deste mesmo trabalho de Santos (2014).…”
Section: Obtenção Dos Insertos De Assentos De Válvulasunclassified
“…O segundo trabalho resultou na dissertação de mestrado de Igor Passos dos Santos (Santos, 2014), onde foi feito um estudo referente a obtenção de VSI com outras misturas de pós diferentes. Em suma, além de considerar a mistura de pós (aço rápido AISI M3:2) do trabalho do Jesus Filho (2006), foi proposta a obtenção de VSI com mais dois tipos de misturas de pós, contendo como elementos principais o aço rápido AISI M2 e o aço ferramenta AISI D2.…”
Section: Introductionunclassified