Manufacturing Technology 2017, 17(1):14-18 | DOI: 10.21062/ujep/x.2017/a/1213-2489/MT/17/1/14

The Influence of Mould Strength on Shrinkage Production for Castings with Different Wall Thickness for Material EN-GJS-400-18LT

Martin Conev, Iveta Vasková, Martina Hrubovčáková
Department of Ferrous Metallurgy and Foundry, Faculty of Metallurgy, Technical University in Košice, Slovakia

This paper is dealing with the influence of mould strength on a shrinkage production for ductile iron castings. According to pressures that impact a mould cavity the strength of mould is an important parameter by ductile iron pouring. During the solidification of cast iron a non-metallic particle - graphite is released. Depending on graphite amount released in the liquid and in the solidified skin of casting the tendency to shrinking is varying. In the experiment a furan sand mixture is used. The experiment compares a size of the created shrinkage in the castings with different wall thickness poured into a moulds with different strength. For the occurrence of shrinkage and its size evaluation a non-destructive ultrasonic reflecting method was used.

Keywords: Ductile iron, furan sand mixture, strength of mould, shrinkage, ultrasonic testing

Published: February 1, 2017  Show citation

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Conev M, Vasková I, Hrubovčáková M. The Influence of Mould Strength on Shrinkage Production for Castings with Different Wall Thickness for Material EN-GJS-400-18LT. Manufacturing Technology. 2017;17(1):14-18. doi: 10.21062/ujep/x.2017/a/1213-2489/MT/17/1/14.
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