System for preparing self-hardening casting mold using organic b

Details System for preparing self-hardening casting mold using organic b System for preparing self-hardening casting mold using organic b

1990-11-06

1992-01-14

Lin, Kuang Y.

Metal founding

With means for handling expelled cast product

164412, 164521, 164 5, B22C 912

Patent

active

050801619

ABSTRACT:
A system for preparing a self-hardening casting mold including a mass of sand which contains an organic binder and which has a pattern-contact layer having a surface for contact with a pattern disposed in a flask. The pattern defines a cavity into which a melt is poured to produce a cast product. The mold further includes a mass of ceramic balls placed on the pattern-contact layer of the sand mass. The system includes a temperature adjusting device for regulating the temperature of the mass of ceramic balls prior to introduction thereof into the flask, so as to control the hardening rate of mass of sand in the flask, a separating device operable on a mixture of sand and ceramic balls obtained from the mold after the cast product is produced by the mold with the pattern removed. The separating device separates the ceramic ball from the sand, and supplies the ceramic balls to the temperature adjusting device. The system further includes a sand reclaiming device for treating the separated sand to be reclaimed for preparing another casting mold.

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