Sand Mold
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Efeito da Taxa de Resfriamento e dos Tratamentos Térmicos sobre as Propriedades Mecânicas da Liga Al-Si-Mg (A356.0) Fundida / Efeito da Taxa de Resfriamento e dos Tratamentos Térmicos sobre as Propriedades Mecânicas da Liga Al-Si-Mg (A356.0) Fundida
The A356.0 alloy is widely used in aerospace and automotive industry and other structural applications which require high mechanical strength. The control of solidification cooling rate and heat treatments are necessary to obtain more appropriate microstructures resulting in improvement of their properties. In this paper was evaluated the influence of coolin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
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2. Experimental investigation on the effects of recycled aggregate on fracture behavior of polymer concrete
The sustainable management of solid wastes stimulates metallurgic and metal mechanics industries to look for safety applications for these wastes. The present paper examines the fracture behavior of polymer concrete (PC) manufactured with recycled foundry waste in substitution of fresh one. The recycled foundry sand is contaminated with polymer resin from th
Materials Research. Publicado em: 26/08/2011
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3. Influência da interação entre os parâmetros reológicos de argamassas e a área potencial de contato de substratos na aderência de argamassas de revestimento / Interaction between mortar rheological parameters and surface potential contact area on mortar renderings bond strength
and the shear bond strength of mortar rendering applied to concrete surfaces, this work intended to verify the influence of the interaction between surface potential contact area and mortar renderings¿ rheology on these performance properties. Moreover, this work has the objective to verify the influence of the mortar¿s rheology affected by the air-entrain
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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4. Parametros termicos e estruturais em ferros fundidos cinzento e nodular solidificados em moldes de areia e unidirecionalmente / Thermal and structural parameters in gray and ductile cast irons solidified in sand molds and under unidirectional conditions
In the present work unsteady state unidirectional solidification of a hypoeutectic gray cast iron and of a eutectic ductile cast iron is applied to analyze the influence of the process parameters an the flake and nodule count. For comparison purpose some samples were cast in sand molds. The experimental results of temperature variation in the casting were us
Publicado em: 2009
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5. Estudo da liga Al-Si hipoeutética fundida em moldes de areia verde: efeito da adição de refinadores e modificadores de grão nas propriedades mecânicas
Neste trabalho foram investigadas a microestrutura e as propriedades mecânicas da liga Al-Si hipoeutética (7%Si) fundida em molde de areia verde. Dentre as ligas de alumínio, cerca de 90% tem o silício como principal elemento de liga. O processo de fundição em areia verde é amplamente utilizado devido a ser um processo simples, versátil e de baixo cu
Publicado em: 2009
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6. UMA ABORDAGEM HEURÍSTICA PARA O PROBLEMA DE PLANEJAMENTO DA PRODUÇÃO EM FUNDIÇÕES ESTUDO DE CASO
The main objective of this work is to propose optimization methods of the production to a medium size market foundry industry. Taking into consideration the peculiarities of the enterprise used as case study, on the contrary of many other works in this area, the present research is focused in the production programming which is based in the macharia( it is a
Publicado em: 2008
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7. Estudio de la resistencia a la tracción y deformación de fundición esferoidal de pequeño espesor
The present work analyzes the mechanical properties of plates with thickness ranged between 1.5 to 4mm. Heats with different carbon equivalent (CE) were produced and resin bonded sand molds with vertical and horizontal gating systems were pour. Nodules counting ranged between 900 to 2200 nod/mm2 were obtained. All plates were ferritized prior to machining te
Matéria (Rio de Janeiro). Publicado em: 2006-09
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8. Numerical simulation of heat transfer during the solidification of pure iron in sand and mullite molds
Many complex phenomena favoring the solidification of metal that occur during the casting process, such as cast metal flow, thermal gradient and heat transfer between the cast metal and the mold. The grain size and mechanical properties of cast metal are defined by both these phenomena, and by the geometrical characteristics and thermo-physical properties of
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-12