Fettling Machine Used In Sand Casting

Fettling Machine Used In Sand Casting

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Why is sand sticking on castings in a CO2 molding process Dec 25, 2017 In co2 casting process we use 78 sodium silicate . Sodium silicate is strong binder, it makes strong bond with sand and when co2 is passed through mould the gelling of sand and silicate takes place which makes it very hard.And there is no lustron is used in this process so sand stick to the casting.

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