We are having problems when casting valves in this material large amounts of gas are forming when the mould is cast.
We have raised the aluminum levels to try to aid with de-gasing however this has little effect.
Any suggestions ?
We are currently having problwms with large amounts of gas forming in our casting's poured in material P91 (ASTM A217 c12A)
We have increased the aluminum content however this has had little effect.
All our sand moulds chemically bonded.
1. Are there any other practical ways to de-gas this...
We are currently having problems with large amounts of gas forming in casting when using the material P91 (ASTM A217 C12A).
We use chemically bonded sand to produce our moulds.
We have tried increasing the aluminium content without to much succes.
Is there a another way of degassing this material?