Open Access Conference Proceedings

High pressure die casting technology is one of the most productive technologies for producing thin-walled aluminum parts in mass production. Along with high productivity, it offers high precision, very good surface quality, fine-grained texture without tightenings with good mechanical properties. One of the ways to increase the economic efficiency of the high pressure die casts production while adhering to the prescribed quality properties represented by the mechanical properties of casts, is using the remelted material in high pressure foundries. This contribution is conceived as a cross-sectional study of the remelted material implementation in the high pressure die casting technology. The study is focused on the technological and economic aspects of the remelted material implementation into the production of aluminum based high pressure die casts. The results of the operational experiments show that the proportion of the remelted material in the batch increases the porosity of casts, reduces the mechanical properties of casts and adversely affects the chemical composition of the input alloy. The proper ratio of pure and remelted material in the melt, while maintaining the prescribed quality requirements for cast, entails significant economic savings. The presented contribution serves as a summary of knowledge in the field of metallurgical preparation of aluminum alloys and implementation of remelted material into production.

Keywords: High pressure die casting, remelted material, mechanical properties, casts quality, aluminum alloys

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