Moulding for the heat retention of feeder head in casting...

Details Moulding for the heat retention of feeder head in casting... Moulding for the heat retention of feeder head in casting...

B - Operations, Transporting

22

D

22/135

B22D 7/10 (2006.01)

Patent

CA 1052533

ABSTRACT This invention is directed to a moulding for heat retention in the feeder head top surface, when casting molten metals. The moulding comprises about 3 to 15% by weight of an organic binder, about 3 to 15% by weight of an organic fibrous material, in admixture with pulverised charcoal which entirely passes through a 10 mm. sieve and with a member of the group of vermiculite, thermo -expansible graphite and mixtures thereof, the proportion by weight between said pulverised charcoal and said vermiculite, said thermo-expansible graphite or said mixture is 1:0.07-0.20 when the particle size of the pulverised charcoal is in the range of from 10 mm. to 2 mm., and the proportion is 1:0.10-0.40 when the particle size of the pulverised charcoal is not more than 2 mm.

302890

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