Title:
METHOD OF HARDENING SURFACE OF METALLIC PART, PISTON, CYLINDER HEAD, AND CYLINDER BLOCK EACH PRODUCED USING THE SURFACE-HARDENING METHOD, AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/132587
Kind Code:
A1
Abstract:
A method of surface hardening which comprises coating the surface of an engine
part with an alloy layer having excellent wearing resistance to improve the life
of the part; and a process in which a piston or the like improved in wearing resistance
by the method is produced. In the process, a metallic powder, a binder, and a solvent
are mixed together, and this mixture is evenly applied to the surface of a metallic
base material to form a coating film. The coating film is dried and irradiated
with a laser light or electron beams to sinter the coating film and cause diffusion.
Thus, an alloy layer is formed on the surface of the metallic base material and
this alloy layer is bonded to the metallic base material.
Inventors:
OGINO TOMOYA (JP)
KANAI YASUHIRO (JP)
OKA MASANORI (JP)
KANAI YASUHIRO (JP)
OKA MASANORI (JP)
Application Number:
PCT/JP2007/054802
Publication Date:
November 22, 2007
Filing Date:
March 12, 2007
Export Citation:
Assignee:
YANMAR CO LTD (JP)
OGINO TOMOYA (JP)
KANAI YASUHIRO (JP)
OKA MASANORI (JP)
OGINO TOMOYA (JP)
KANAI YASUHIRO (JP)
OKA MASANORI (JP)
International Classes:
C23C24/08; B22F3/105; B22F5/00; B22F5/02; B22F7/08; B23K15/00; B23K26/21; B23K26/34; C21D1/09; C21D9/00; C23C10/30; C23C26/00; F02F1/00; F02F1/24; F02F3/00; F16F9/32; F16J1/01; F16J9/00
Foreign References:
JP2001527601A | 2001-12-25 | |||
JPH09295173A | 1997-11-18 | |||
JP2005509522A | 2005-04-14 | |||
JPH01104487A | 1989-04-21 | |||
JP2002537121A | 2002-11-05 |
Other References:
See also references of EP 2025776A4
Attorney, Agent or Firm:
YANO, Juichiro (Twin 21 MID Tower 34th Floor1-61, Shiromi 2-chome, Chuo-k, Osaka-shi Osaka 34, JP)
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