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Title:
SLIDING MEMBER AND SLIDING MEMBER PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2015/125950
Kind Code:
A1
Abstract:
The present invention forms a high-precision sliding surface (S) that does not have adhered thereto the scattered material, etc., associated with the processing of a positive-pressure generating groove (11a) and a negative-pressure generating groove (15a) that are formed in the sliding surface (S). The present invention also flattens the bottom surface of the positive-pressure generating groove (11a) and the negative-pressure generating groove (15a) that are formed in the sliding surface (S). The present invention is characterized by comprising: a step for preparing at least one side of a pair of sliding members (3, 5); and a processing step for forming, in the sliding surface (S) of the sliding members (3, 5), shallow grooves (11a, 15a) that have a depth in the range of 0.05-5 μm by irradiating, with an ultrashort pulse laser, the section of the sliding surface (S) in which the positive-pressure generating groove (11a) and the negative-pressure generative groove (15a) are formed and removing a portion of the surface of the sliding surface (S). The present invention is also characterized in that the energy fluence of the ultrashort pulse laser used at the processing step is 0.5-7 J/(cm2∙pulse).

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Inventors:
HOSOE TAKESHI (JP)
NISHIDA SHINJI (JP)
MORI KOICHI (JP)
NEGISHI YUTA (JP)
KAWAI HIDEKI (JP)
ITADANI MASATOSHI (JP)
Application Number:
PCT/JP2015/054933
Publication Date:
August 27, 2015
Filing Date:
February 23, 2015
Export Citation:
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Assignee:
EAGLE IND CO LTD (JP)
International Classes:
B23K26/364; B23K26/00; B23K26/082; F16C17/04; F16C33/14; F16J15/34
Foreign References:
JP2005321048A2005-11-17
JP2003211400A2003-07-29
JP2011251320A2011-12-15
JP2011240403A2011-12-01
JP2011242644A2011-12-01
US20060034554A12006-02-16
JP2009255141A2009-11-05
Other References:
See also references of EP 3112078A4
Attorney, Agent or Firm:
SHIGENOBU Kazuo et al. (JP)
Shigenobu Kazuo (JP)
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