Natural and synthetic molding sand and Properties of molding sand





According to the amount of clayey matter they contain, the molding sands are classified as:



1. Silica Sand:

2. Lean or weak sand :

3. Moderately strong sand :

4. Strong sand :

5. Extra Strong sand (Loam sand) :









Natural / green sand for casting :




Natural sand is the one which is available from natural deposits. Only additives and water need be

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