Title:
SINTERING METHOD FOR WORK IN POWDER METALLURGY
Document Type and Number:
Japanese Patent JP3240094
Kind Code:
B2
Abstract:
PURPOSE: To minimize the dimensional change at the time of sintering by locking the upper end periphery of a sintering jig on an R part and sintering a work in a high temp. furnace.
CONSTITUTION: An R part 17 to be locked, for being fitted to a sintering jig 16, is formed on the inside periphery of the top face 2 of a work 15. The sintering jig 16 is made of iron having thermal expansion coefficient and thermal conductivity practically approximating to those of the work 15 and is formed into a cylindrical shape having a size where its outside diameter can be practically fitted to the inside peripheral wall of the work 15 and inserted, and further, a teeth part is formed at its outside peripheral surface. The sintering jig 16 is placed on a mesh belt 10 and the work 15 is put on it. In this state, the work 15 is passed through a high temp. furnace and sintered. By this method, the straightening stage after work sintering can be removed or simplified.
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Inventors:
Yoshitaka Kawashima
Eiji Matsufuji
Eiji Matsufuji
Application Number:
JP26639394A
Publication Date:
December 17, 2001
Filing Date:
October 31, 1994
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
B22F3/10; (IPC1-7): B22F3/10
Domestic Patent References:
| JP63109103A |
Attorney, Agent or Firm:
Shogo Ebara (2 outside)
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