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Title:
MANUFACTURE OF RIGID STRUCTURE FROM EXTRUDED METAL POWDER AND CONTAINER AND FURNACE USED FOR THE SAME
Document Type and Number:
Japanese Patent JPH05195015
Kind Code:
A
Abstract:

PURPOSE: To calcine green bodies without being contaminated by discharging a gas, which is introduced into a non-gas tight chamber located in a hot zone for housing the green bodies, outside a furnace through the hot zone via a gas-discharging means.

CONSTITUTION: A porous thermal shield 16 is arranged within the furnace 10 and the hot zone 24 equipped with heating elements 14 is formed at the inside thereof. The non-gas tight chamber 13 for housing the green bodies 34 is arranged within this hot zone 24. These green bodies 34 are obtained by extruding the metal powder, a mixture of other arbitrary components and a binder. Further, it is desirable that the non-gas tight chamber 13 is made of a refractory metal such as Mo. The above green bodies 34 are heated and calcined while introducing one or more kinds of gas 32 into this non-gas tight chamber 13 and a cold zone 26. The above gas 32 is discharged outside the furnace by the gas-discharging means 22 from the non-gas tight chamber 13 and the cold zone 26 through the hot zone 24. Thus, the green bodies 34 are effectively protected from contaminants, thereby forming an uncontaminated rigid film- producing body.


Inventors:
Hampton, Leslie E.
Weiss, David S.
Application Number:
JP1992000195148
Publication Date:
August 03, 1993
Filing Date:
July 22, 1992
Export Citation:
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Assignee:
CORNING INC
International Classes:
B01J35/04; B22F3/10; B22F3/20; B22F5/00; B22F5/10; F27B5/04; F27D5/00; F27D7/06; (IPC1-7): B01J35/04; B22F3/10; B22F3/20; B22F5/00
Attorney, Agent or Firm:
柳田 征史 (外1名)