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Title:
HEARTH FOR VACUUM FURNACE
Document Type and Number:
Japanese Patent JP3240690
Kind Code:
B2
Abstract:

PURPOSE: To provide a hearth for a vacuum furnace made of carbon fiber composite carbon material which can suppress roughness and pulverization of a surface and is durable in a long-term use.
CONSTITUTION: A supporting base 12 and supporting legs 11 of a hearth 10 for a tack type vacuum sintering furnace are formed of carbon fiber reinforced carbon material, and surfaces of parts thereof are covered with a material having gas shielding properties and containing metal, nitride, carbide, etc., as main ingredients by a PVD method or a CVD method.


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Inventors:
Koji Matsui
Hideaki Matsuo
Application Number:
JP17917692A
Publication Date:
December 17, 2001
Filing Date:
June 12, 1992
Export Citation:
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Assignee:
Daido Steel Co., Ltd.
International Classes:
B22F3/10; F27B5/04; F27B9/04; F27D1/00; (IPC1-7): F27D1/00; B22F3/10; F27B5/04; F27B9/04
Domestic Patent References:
JP3288639A
JP5829129Y2
Attorney, Agent or Firm:
Masao Inui



 
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