· Aleaciones ligeras ·
Derya DISPINAR, John CAMPBELL
Department of Metallurgy and Materials, University of Birmingham, UK.
67th World Foundry Congress
A study in a secondary alloy ingot producing plant was targeted to
investigate the metal quality change in the holding furnace during
secondary remelting of aluminum alloy LM24 (Al-8Si-3Cu-Fe). The
investigation was an attempt to understand the effect of (i) the use of
diffusers (porous plugs integrated into the body of the furnace) and (ii)
casting techniques involving different degrees of turbulence.
Casting density and bifilm index were found to be useful parameters to
assess metal quality. It was found that the metal quality was increased
significantly, and was maintained high throughout the casting operation
when (i) diffusers were used and (ii) turbulence was reduced to a
minimum.
