PT  - JOURNAL ARTICLE
AU  - Conev, Martin
AU  - Vasková, Iveta
AU  - Hrubovčáková, Martina
TI  - The Influence of Mould Strength on Shrinkage Production for Castings with Different Wall Thickness for Material EN-GJS-400-18LT
DP  - 2017 Feb 1
TA  - Manufacturing Technology Journal
PG  - 14--18
VI  - 17
IP  - 1
AID - 10.21062/ujep/x.2017/a/1213-2489/MT/17/1/14
IS  - 12132489
AB  - 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.