Title:
PRODUCTION OF SINTERED COMPOSITE MECHANICAL PARTS
Document Type and Number:
Japanese Patent JP3246574
Kind Code:
B2
Abstract:
PURPOSE: To obtain high strength of joining by solid-phase diffusion in joining of an outer of a sintered member and an inner of a smelted steel product.
CONSTITUTION: This process for production of sintered composite mechanical parts consists in heating and sintering the green compact outer having a hole part formed by compression molding of a powder mixture contg. iron metallic powder and the inner of the smelted steel product having a shaft part in a fitted state, thereby joining both members. The inner having the carbon content in at least the front layer part larger by ≥0.3wt.% than the carbon content of the outer is used and the hole part size of the outer is made smaller by 0 to 60μm than the shaft part size of the inner. The inner and the outer are fitted by shrinkage fit and are sintered.
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Inventors:
Kazuo Asaka
Teruhiko Kashima
Teruhiko Kashima
Application Number:
JP11719793A
Publication Date:
January 15, 2002
Filing Date:
May 19, 1993
Export Citation:
Assignee:
Hitachi Powdered Metals Co., Ltd.
International Classes:
B22F7/04; B22F7/08; (IPC1-7): B22F7/04; B22F7/08
Domestic Patent References:
| JP58193304A | ||||
| JP5913003A |
Attorney, Agent or Firm:
Shigenori Wada