Method for knocking out silicate-bonded mould material from...

Details Method for knocking out silicate-bonded mould material from... Method for knocking out silicate-bonded mould material from...

B - Operations, Transporting

22

D

22/154

B22D 45/00 (2006.01) B22D 29/00 (2006.01)

Patent

CA 1078131

ABSTRACT OF THE DISCLOSURE: A method for knocking out silicate-bonded granular mould material from a mould after casting. This method is characterized in that the mould after casting is contacted with an alkaline aqueous solution to loosen the bond between the grains by dissolving the silicate binder, and release the mould material. The cast mould can be immersed in a bath of the solution, or poured over or sprinkled or sprayed with the alkaline aqueous solution. The method avoids the awkward mechanical knock-out of the hardened mould material and the drawbacks connected therewith.

255890

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