Process of producing a sintered compact
AssigneeSumitomo Electric Industries, Ltd.
InventorAkio Hara
Life of this patent
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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.
Claims12
Process of producing a sintered compact comprising:
- 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.
Dependencies are inferred from the claim text.