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Sodium Silie Sand Moulding

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Sodium Silie Sand Moulding

The sand mixture used in this process is pure silica and sodium silicate. The molding mixture thus obtained is rammed around the pattern and gassed with carbon dioxide (CO 2). The molding mixture gets hardened due to the formation of silica gel. After passing CO 2, the pattern is removed and the mold cavity is ready for pouring.

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