Method of reclaiming sand used in evaporative casting process

Details Method of reclaiming sand used in evaporative casting process Method of reclaiming sand used in evaporative casting process

1983-11-07

1985-10-01

Godici, Nicholas P.

Metal founding

Process

Including recycling of process material

164 34, B22C 902

Patent

active

045440131

ABSTRACT:
The invention is a method of reclaiming sand used in a method of casting a metal having a liquidus temperature below 2000.degree. F., the casting method using a vaporizable pattern set within a mold constituted of unbonded sand. The method comprises: (a) blowing, after a predetermined lapse of time after the pouring of the metal into the mold, a combustion supporting gas into and through substantially the entire volume of the mold to levitate at least a region of the sand adjacent to the casting and to combust volatilized byproducts of the pattern entering the mold, and (b) continuing the blowing of the combustion supporting gas to continue combustion and driving of the gas and byproducts of the combustion out of the mold.

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"Marks' Standard Handbook for Mechanical Engineers", 8th Ed., pp. 4-60.

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