Apparatus and methods for economically fabricating molded refrac

Details Apparatus and methods for economically fabricating molded refrac Apparatus and methods for economically fabricating molded refrac

1998-06-12

2000-11-28

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428469, 428 67, 4282944, 249134, B28B 700

Patent

active

061533122

ABSTRACT:
A method is disclosed for making a molded refractory article comprising the steps of providing a mold including a molding pattern, the mold and molding pattern defining a mold cavity; filling the mold cavity around the molding pattern with a mixture comprising refractory particles and a heat fugitive binder; inserting a plurality of elements of relatively high melting point material into the mixture to displace a portion of the mixture; curing the mixture; separating the mold and molding pattern from the cured mixture; and sintering the combination of the cured mixture and mixture displacing elements to provide a reinforced molded refractory article. The mixture displacing elements preferably comprise a plurality of parallel tool steel rods. Also disclosed is an apparatus for molding the aforedescribed reinforced refractory article.

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U.S. application No. 60/079,847, Charles W. Hull et al., filed Mar. 27, 1998, and titled "Molding Method, Apparatus, and Device Including Use of Powder Metal Technology For Forming a Molding Tool with Thermal Control Elements".

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