Mass for production of cores and casting moulds

Details Mass for production of cores and casting moulds Mass for production of cores and casting moulds

B - Operations, Transporting

22

C

22/190, 6/43

B22C 1/16 (2006.01)

Patent

CA 1093276

ABSTRACT OF THE DISCLOSURE Moulding composition or masses for production of cores and casting moulds comprising 100 parts by weight of grain base, particularly quartz sand, 0.5-30 parts of alkaline metal hydroxides, 1-40 parts of alkaline metal carbonates, 1-15 parts of water as well as 0.2-10 of known hydrophilic binders. The moulding composition or masses according to the invention is removed from the cast or mould by subjecting the core in the cast or mould to the action of solvent, particularly water, preferably by dipping.

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