High temperature investment material and method for making...

Details High temperature investment material and method for making... High temperature investment material and method for making...

2005-09-27

2005-09-27

Marcheschi, Michael (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

C106S038220, C106S038270, C106S038900, C164S015000, C164S520000, C164S528000, C164S529000

Reexamination Certificate

active

06949136

ABSTRACT:
An improved phosphate-type refractory investment material and method for making solid investment molds especially useful for casting high melting point metals and alloys, such as platinum and the like. The material consists essentially of one or more phosphate salts, a water soluble acidic constituent, and refractory powder. The material can be prepared as a dry powder blend which is easily shipped to the user and mixed with water at the time of investing the flask. Alternatively, the salt and/or acidic constituent can be combined with the refractory powder at the time of mixing with water.

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