The fluidity of an alloy in the liquid state influences the foundry moulds’ dynamic filling. In this work a real fluidity test, that is based on Archimedean spiral’s principle and it has been carried out on an A356 alloy, has been numerically simulated. The cavity reproducing spiral geometry is formed in sand mould. The liquid metal, which is poured into the cavity, goes across a stretch of the spiral before solidifying, and the length travelled gives an assessment of the metal fluidity. The real fluidity test helped to calibrate a numerical simulation software, with the aim to identify the correct boundary conditions necessary to simulate both the real behaviour of the metal and the metal-mould interactions.
Numerical simulation of an aluminium foundry alloy’s fluidity test
CALIARI, DANIELE;TIMELLI, GIULIO
2014
Abstract
The fluidity of an alloy in the liquid state influences the foundry moulds’ dynamic filling. In this work a real fluidity test, that is based on Archimedean spiral’s principle and it has been carried out on an A356 alloy, has been numerically simulated. The cavity reproducing spiral geometry is formed in sand mould. The liquid metal, which is poured into the cavity, goes across a stretch of the spiral before solidifying, and the length travelled gives an assessment of the metal fluidity. The real fluidity test helped to calibrate a numerical simulation software, with the aim to identify the correct boundary conditions necessary to simulate both the real behaviour of the metal and the metal-mould interactions.
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