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发明公开
CN1851025A 一种具有优异抗疲劳性能的高强度弹簧钢 无效 - 驳回

一种具有优异抗疲劳性能的高强度弹簧钢
摘要：
本发明属于合金钢领域，主要适用于抗拉强度1800MPa以上，具有优异的抗疲劳破坏性能的高强度弹簧钢。该钢的具体化学成分(重量％)为：C0.35～0.55％，Si 1.70～2.50％，Mn 0.40～0.70％，Cr 0.70～1.10％，V 0.05～0.20％，RE 0.005～0.10％，Ca 0.0005～0.020％，P≤0.020％，S≤0.015％，O≤0.0015％，余为Fe和其它不可避免的杂质。另外，该钢中还含有B 0.0005～0.0030％，Ti 0.01～0.10％或还含有Ni 0.01～1.50％。本发明与现有技术相比具有抗拉强度高、抗疲劳性能优良、成本低的优点。
摘要（英）：

The invention belongs to the steel alloy domain and is mainly fit for the high strength spring steel with excellent ability of resisting the tire wreck and the resisting draw intension keeping above 1800MPa. The element component (weight percent) of the steel: C 0.35-0.55%, Mn 0.40-0.70%, Si 1.70-2.50%, Cr 0.70-1.10%, V 0.05-0.20%, RE 0.005-0.10%, Ca 0.005-0.10%, Ca 0.0005_0.020%, P<0.020%, S<0.015%, O<0.015%, the remaining quantity is Fe and unavoidable impurity. The steel also contains the B 0.0005_0.0030%, Ti 0.01-0.10% or the Ni 0.01-1.50%. Compared to the existing technology, the invention has many merits such as the high resisting drag intension, the excellent resisting tire ability and the low cost.

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