SLIDING COMPONENT
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United States of America Patent
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Mar 6, 2016
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Mar 11, 2015
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Abstract
Sliding characteristics are improved in a wide range of bearing characteristic numbers on a sliding face, and a predetermined dynamic pressure is generated by dimples processed accurately. In a sliding component including a plurality of dimples 10 disposed on at least one of sliding faces S of a pair of sliding parts 3 and 5 relatively sliding on each other, the plurality of dimples 10 is provided mutually independently of the other dimples and disposed in a randomly distributed manner, each of the dimples 10 is formed by irradiation with an ultrashort pulse laser, constituting a shallow groove with a depth in a range of 0.05 μm to 5 μm, and the dimples have a bottom surface whose roughness Ra is 1/10 or less of a processing depth.
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