Shot peening treatment for cavitation erosion resistance

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United States of America Patent

PATENT NO 10202663
APP PUB NO 20180023153A1
SERIAL NO

15214595

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In some examples, a material may be subject to shot peening of a relatively long duration to improve cavitation erosion resistance of the material. For example, the material surface may be shot peened to cause grain reduction and an increase in hardness to a depth of 60 μm or more, while the surface remains relatively smooth. As one example, the method may include treating a surface of austenitic stainless steel by impacting the surface with shot media for a treatment duration of 15 to 40 minutes at a shot peening intensity corresponding to an Almen strip type A intensity of 5A to 10A.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTDTOKYO JAPAN

International Classification(s)

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  • 2016 Application Filing Year
  • B24B Class
  • 687 Applications Filed
  • 524 Patents Issued To-Date
  • 76.28 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yuan, Wei Novi, US 197 1762
Zheng, Lili Farmington Hills, US 29 37

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  • 1 Citation Count
  • B24B Class
  • 44.67 % this patent is cited more than
  • 6 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges4365162111101 - 1011 - 2021 - 3031 - 4061 - 700255075100125150175200225250275300325350375400425450475500525550

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