Slip cast article manufacturing method

Details Slip cast article manufacturing method Slip cast article manufacturing method

1976-12-22

1980-08-12

Parrish, John A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 86, 264221, 264317, B28B 126

Patent

active

042173205

ABSTRACT:
A method of forming a slip cast article is disclosed. The slip cast article is formed in a casting volume of a forming mold, which mold has a portion thereof formed of a meltable organic material. The vehicle of the casting slip used to form the article is drawn off to a level which provides a consolidated casting in the casting volume which contains sufficient vehicle that the casting is resistant to shrinkage. The consolidated casting and the organic mold portion are then surrounded with a porous, liquid drawing media. A high humidity of the vehicle of the casting slip is maintained about the consolidated casting surrounded by the porous, liquid drawing media. The consolidated casting and surrounding liquid drawing media are heated while the high humidity of the vehicle is maintained to a temperature which causes the meltable organic material to melt. The porous, liquid drawing media then draws the melted material away from the consolidated casting. After the meltable mold portion has been withdrawn from association with the consolidated casting, the high humidity vehicle is removed from association with the consolidated casting and the casting is permitted to dry.

REFERENCES:
patent: 3263957 (1966-08-01), Lirones
patent: 3339622 (1967-09-01), Horton
patent: 3420644 (1969-01-01), Lirones
patent: 3888662 (1975-06-01), Boeckeler
patent: 4011291 (1977-03-01), Curry
patent: 4067943 (1978-01-01), Etis et al.

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