- 专利标题: FORGED COMPONENT, METHOD FOR MANUFACTURING THE SAME, AND CONNECTING ROD
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申请号: US17422954申请日: 2020-02-06
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公开(公告)号: US20220074028A1公开(公告)日: 2022-03-10
- 发明人: Michinori FUKUYAMA , Takeyuki UENISHI
- 申请人: AICHI STEEL CORPORATION
- 申请人地址: JP Tokai-shi
- 专利权人: AICHI STEEL CORPORATION
- 当前专利权人: AICHI STEEL CORPORATION
- 当前专利权人地址: JP Tokai-shi
- 优先权: JP2019-046809 20190314
- 国际申请: PCT/JP2020/004570 WO 20200206
- 主分类号: C22C38/00
- IPC分类号: C22C38/00 ; C22C38/24 ; C22C38/04 ; C22C38/02 ; C22C38/60 ; C22C38/06 ; C21D9/52
摘要:
A forged component having a chemical composition including, by mass %, C: 0.30 to 0.45%, Si: 0.05 to 0.35%, Mn: 0.50 to 0.90%, P: 0.030% or less, S: 0.040 to 0.070%, Cr: 0.01 to 0.50%, Al: 0.001 to 0.050%, V: 0.25 to 0.35%, Ca: 0 to 0.0100%, N: 0.0150% or less, and the balance being Fe and unavoidable impurities, and satisfying Formulae 1 through 3. The: metal structure is a ferrite pearlite structure, and a ferrite area ratio is 30% or more; Vickers hardness is in the range of 320 to 380 HV; 0.2% yield strength is 800 MPa or more; a Charpy V-notch impact value is in the range of 15 to 25 J/cm2: and an unevenness of fracture surface (surface area/cross sectional area) of the Charpy test piece after fracture is in the range of 1.47 to 1.60.
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