High-strength spring steel
    4.
    发明授权
    High-strength spring steel 失效
    高强度弹簧钢

    公开(公告)号:US5286312A

    公开(公告)日:1994-02-15

    申请号:US955434

    申请日:1992-10-02

    摘要: Disclosed is a high-strength spring steel containing C, Si, Mn, Ni, Cr, Mo, V and the like within the specified range, wherein the above components satisfy the following equation:550-333[C]-34[Mn]-20[Cr]-17[Ni]-11[Mo].gtoreq. 300where [C, Mn, Cr, Ni, or Mo] represents wt % of each component, and the average diameter of the non-metallic inclusions of oxides is specified. By use of the above steel, there can be obtained a high-strength spring steel having a tensile strength of 200 kgf/mm.sup.2 or more and being excellent in the fatigue characteristic and the sag resistance. Further, in the above steel, each content of C, Si, Ni, and Cr may be added to satisfies the following equation:50[Si]+25[Ni]+40[Cr]-100[C].gtoreq. 230where [Si, Ni, Cr or C] represents wt % of each component. Thus the corrosion fatigue characteristic is also improved.

    摘要翻译: 公开了在规定范围内含有C,Si,Mn,Ni,Cr,Mo,V等的高强度弹簧钢,其中上述成分满足下列公式:550-333(C)-34(Mn) -20(Cr)-17(Ni)-11(Mo)> = 300其中(C,Mn,Cr,Ni或Mo)表示各成分的重量%,氧化物的非金属夹杂物的平​​均直径 被指定。 通过使用上述钢,可以获得拉伸强度为200kgf / mm 2以上的高强度弹簧钢,并且疲劳特性和抗流挂性优异。 此外,在上述钢中,可以添加C,Si,Ni和Cr的各含量以满足下式:50(Si)+25(Ni)+40(Cr)-100(C)> = 230其中 (Si,Ni,Cr或C)表示各成分的重量%。 因此,腐蚀疲劳特性也得到改善。