Problems with gas in Material P91
Problems with gas in Material P91
(OP)
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?
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?





RE: Problems with gas in Material P91
I hope these suggestion will help.
SDJVAR
RE: Problems with gas in Material P91