Method for manufacturing a fused cast refractory

Details Method for manufacturing a fused cast refractory Method for manufacturing a fused cast refractory

1987-11-12

1990-07-24

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

164 71, 164 72, 264511, 264220, 264332, 425388, B29C 3338, B29C 3902

Patent

active

049433989

ABSTRACT:
A method for manufacturing a fused cast refractory article including the steps of pouring a molten refractory material into a cavity of a mold including a casting sand held by a negative pressure applied through the sand and against a thermoplastic film which surrounds the mold cavity, casting and cooling off the refractory material, wherein the negative pressure is maintained after the casting. The mold includes an upper mold portion including a frame, a casting sand, and a thermoplastic film; a bottom mold portion including a frame, a casting sand and a thermoplastic film; and a cavity defined by the thermoplastic film between the upper and bottom mold portion and having an inlet opening.

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