Full mold casting process and device

Details Full mold casting process and device Full mold casting process and device

1990-03-05

1990-09-25

Lin, Kuang Y.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164 71, 164 34, 1641601, 164154, B22C 904, B22C 1522

Patent

active

049586742

ABSTRACT:
A full mold casting process in which a complete, positive model made of a thermally decomposable material is placed in a molding box and filled with sand; the sand is hardened by tamping it in. Casting metal is poured on the thermally decomposable model and the model is decomposed by the casting heat. In order to fill up the cavities of the model and mold moldings with crucial cavities, reliably with the molding sand, the sand is subjected to either a positive or negative pressure differential during the sand-filling phase to enclose and fill the model. The filling and hardening of the sand is further assisted through the fact that simultaneous vibration of the molding box is carried out while the sand is subjected to pressure differential.

REFERENCES:
patent: 3861447 (1975-01-01), Hondo
patent: 4126176 (1978-11-01), Muller et al.

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