PT Journal
AU Conev, M
   Vaskova, I
   Hrubovcakova, M
TI The Influence of Mould Strength on Shrinkage Production for Castings with Different Wall Thickness for Material EN-GJS-400-18LT
SO Manufacturing Technology Journal
PY 2017
BP 14
EP 18
VL 17
IS 1
DI 10.21062/ujep/x.2017/a/1213-2489/MT/17/1/14
DE Ductile iron; furan sand mixture; strength of mould; shrinkage; ultrasonic testing
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.
ER