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US06562484B2 Steel material of high fatigue strength and a process for manufacturing the same 有权
高疲劳强度的钢材及其制造方法

  • Patent Title: Steel material of high fatigue strength and a process for manufacturing the same
  • Patent Title (中): 高疲劳强度的钢材及其制造方法
  • Application No.: US09761901
    Application Date: 2001-01-17
  • Publication No.: US06562484B2
    Publication Date: 2003-05-13
  • Inventor: Masayoshi Usui , Kikuo Asada
  • Applicant: Masayoshi Usui , Kikuo Asada
  • Priority: JP2000-017525 20000126
  • Main IPC: B32B1518
  • IPC: B32B1518
Steel material of high fatigue strength and a process for manufacturing the same
Abstract:
A hot worked steel material, such as a bar, or tube, has a surface layer improving its fatigue strength despite the non-metallic inclusions which it may contain, or the cracks which it may have. The surface layer is formed by heating a nickel layer on the steel surface to cause the diffusion of nickel therethrough.
Abstract(Chinese):

热处理钢材料如棒材或管材具有表面层，尽管其中可能含有非金属夹杂物，也可能具有裂纹，但其疲劳强度提高。 表面层是通过加热钢表面上的镍层而形成的，以使镍通过其扩散。

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