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Title:
METHOD OF MANUFACTURING SLIDING MEMBER
Document Type and Number:
WIPO Patent Application WO/2006/075520
Kind Code:
A1
Abstract:
A method of manufacturing a sliding member, wherein a laser beam is radiated on the sliding surface (4A) of a shoe (4) at a large number of points in parallel straight directions to form a large number of swelled parts (6) and to form recessed parts (7) adjacent to the swelled parts. The swelled parts (6) and the inside thereof are formed in a direct hardened part (11) with a high hardness, and the recessed parts (7) and the inside thereof are formed in a double hardened part (12) which is lower in hardness than the swelled parts (6). After the hardening by laser beam is performed, lapping is applied to the sliding surface (4A) up to the position of an imaginary line (15) to eliminate irregularities so as to form it in a smooth surface. Then, buffing is applied to the sliding surface (4A). By this, the portion of the sliding surface where the hardness is low is largely cut off more than the portion where the hardness is high, and a large number of micro recesses and projections are formed on the sliding surface (4A). Since the large number of micro recesses and projections are uniformly formed on the sliding surface (4A) of the shoe (4) and a lubricating oil is led therein, the shoe (4) having excellent seizure resistance can be provided.

Inventors:
KANEMITSU HIROSHI (JP)
HATTA MASAHARU (JP)
Application Number:
PCT/JP2005/023861
Publication Date:
July 20, 2006
Filing Date:
December 27, 2005
Export Citation:
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Assignee:
TAIHO KOGYO CO LTD (JP)
KANEMITSU HIROSHI (JP)
HATTA MASAHARU (JP)
International Classes:
C21D1/09; C21D9/00
Foreign References:
JPH07113421A1995-05-02
JPH11107913A1999-04-20
JPH02173212A1990-07-04
JP2000145625A2000-05-26
JPH0293018A1990-04-03
JPH1072618A1998-03-17
Other References:
See also references of EP 1854897A4
Attorney, Agent or Firm:
Kanzaki, Shin'ichiro (5-5 Kyobashi 1-chom, Chuo-ku Tokyo, JP)
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