engleski

Local squeezing casting influence on the compactness of AlSi10Mg alloy castings

The aim of the local squeezing casting process examination has been to eliminate the hot spot i.e. the place of potential formation of shrinkage porosity. The influence of variation of process parameters on the density i.e. soundness (compactness) of AlSi10Mg alloy castings has been obtained by the local squeezing process with the pin during gravity casting in the special permanent mould. Local squeezing parameters have been determined on the basis of preliminary investigations of AlSi10Mg alloy: temperature intervals and relevant temperature of singular phases precipitation and the microstructure development at different cooling rates. The temperature interval of performing the local squeezing casting process has been established in which the density values approaching to the theoretic ones have been determined.

Al-Si alloy; thermal analysis; microstructure development; local squeezing process; density; compactness

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