Original scientific paper
The Most Common Foundry Errors of Pressure Die Castings Made from Hypoeutectic Silumin
Jozef MALIK
; Technical University in Kosice, Faculty of Metallurgy, Košice, Slovakia
Ján PAŠKO
; Technical University in Kosice, Faculty of Manufacturing Technologies based in Presov, Slovakia
Štefan GAŠPÁR
; Technical University in Kosice, Faculty of Manufacturing Technologies based in Presov, Slovakia
Abstract
Pressure die casting is the method used for forcing molten metal into mould cavities under high pressure and at high speed (10 - 100 m.s-1). Pressure die casting is a highly productive method of casting parts with low dimensions tolerance and high surface quality. From the point of view of production quality and effectiveness, special attention should be paid to the internal structural quality of die castings, which is characterised by the types and range of foundry errors (cavities, cold laps). The method of a mould cavity filling which is dependent on the input speed of melt is very important from the point of view of die castings quality. The article deals with the influence of a mould cavity filling speed as well as the occurrence of foundry errors in the pressure die castings made from hypoeutectic silumin.
Keywords
pressure die casting; hypoeutectic silumin; internal quality; foundry errors
Hrčak ID:
97934
URI
Publication date:
31.8.2012.
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