SciELO - Scientific Electronic Library Online

vol.11 número2Uma Metodologia para a avaliação dos gradientes de tenacidade à fratura ao longo da camada cementada do aço SAE 5115Efeito do tratamento térmico na microestrutura e resistência à corrosão da liga 12Cr1,8Ni0,1C índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados


Matéria (Rio de Janeiro)

versão On-line ISSN 1517-7076


RUBIO, Juan C. Campos; PANZERA, Túlio Hallak  e  NOGUEIRA, Wagner Alves. Surface Quality of Sand Aluminum Pieces Cost. Matéria (Rio J.) [online]. 2006, vol.11, n.2, pp.125-137. ISSN 1517-7076.

The present work consists to analyze the physical and chemical characteristics of sands used to foundry and its influence in the quality of the melted pieces. Five different types of sand were collected, both with the same mineral treatment. The characterization of the sand was carried out through the following laboratory tests: grain size distribution (sieving), AFS clay content, water content, permeability, thermal expansion, loss on ignition, sinter point, fine contents meshes and chemical composition. The optical microscope was used in order to identify the geometry of the grains of sand. Two different models were made. The first one with a spiral shape was made to investigate the flow’s capacity of the metal with respect the different characteristics of the sands. The second model which is a plate with different thickness was made to investigate the quality of the surface finishing of the melted pieces. The metal used in the foundry process was the aluminum. It was observed a significant correlation between the laboratory and technological results, which means that it is possible to preview the quality of melted pieces from the characteristics of the sand grains.

Palavras-chave : Foundry sand (silica); aluminum’s foundry; flowing metal; surface finishing.

        · resumo em Português     · texto em Português     · Português ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons