Manufacture of parts from particulate material

Details Manufacture of parts from particulate material Manufacture of parts from particulate material

1976-04-12

1980-04-08

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

264 63, 148105, B22F 100

Patent

active

041971183

ABSTRACT:
The disclosure relates to a method of binder removal from a green body before sintering or the like wherein the green body is initially heated to a temperature above the flow point of the binder to liquify the binder and, at this elevated temperature, surrounded by a solvent for said binder in the vapor phase and at a temperature slightly above the melting point of the binder. The solvent vapor enters the green body slowly and dissolves the binder therein so that excessive stresses are not provided within the body due to binder expansion until binder-solvent substantially ceases to exude from the body. The body is then placed in a bath of the solvent, the solvent being maintained at a temperature above the flow point of the binder to remove remaining binder from the body.

REFERENCES:
patent: 2847710 (1958-08-01), Pitzer
patent: 2939199 (1960-06-01), Strivens
patent: 3277222 (1966-10-01), Vachet et al.
patent: 3423216 (1969-01-01), Somers
patent: 3728110 (1973-04-01), Klar et al.
patent: 3901742 (1975-08-01), Facaros

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