Moulding

Details Moulding Moulding

1984-05-17

1986-12-16

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

106 382, 106 383, 106 85, 164522, 164529, C04B 3502

Patent

active

046297081

ABSTRACT:
A core or insert primarily for the production of metal and alloy castings, e.g. of complicated internal shape, is a refractory body comprising essentially a water-soluble salt and a calcium silicate, the calcium silicate being present in amount of at least 45%, by weight, based on the total weight of calcium silicate and water-soluble salt, and the water-soluble salt and the calcium silicate having a particular particle size distribution. The calcium silicate is preferably a wollastonite.
The core may be removed from the cast or moulded article by dissolution in water.

REFERENCES:
patent: 2687967 (1954-08-01), Yedlick et al.
patent: 3801334 (1974-04-01), Dewey, Jr.
patent: 4480681 (1984-11-01), Alexander et al.

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