Process of producing a sintered compact

Details Process of producing a sintered compact Process of producing a sintered compact

1977-01-24

1982-06-08

Parrish, John A.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264325, 264332, B29C 102

Patent

active

043339026

ABSTRACT:
A process of producing a sintered compact comprises filling a cup with a powdered material to be sintered, putting on an opening of the cup a covering member consisting of a lid and solder so as to permit ventilation between the interior and exterior of the cup to form a cup assembly, applying heat as well as vacuum to the cup assembly to degas the powdered material, melting the solder by the continuation of heat to air-tightly seal the cup with the lid to obtain a closed cup compressible under high pressure at high temperature while maintaining the air-tight seal, and hot-pressing the closed cup to obtain a sintered compact.
The covering member may include a porous lid closing the cup and a solder put on the porous lid.

REFERENCES:
patent: 3239323 (1966-03-01), Folweiler
patent: 3562371 (1971-02-01), Bush
patent: 3939241 (1976-02-01), Powell et al.
patent: 4007251 (1977-02-01), Isaksson et al.
Stromberg et al., "Sintering of Diamond at 1800.degree.-1900.degree. C. and 60-65 K bar," Cev. Bull., vol. 49, No. 12, (1970).

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