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发明公开
CN106591696A 一种翻边性能优良的热轧复相钢及其生产方法 有权

一种翻边性能优良的热轧复相钢及其生产方法
摘要：
本发明公开了一种翻边性能优良的热轧复相钢及其生产方法，属于炼钢技术领域。所述复相钢化学成分按照质量百分比包括：C：0.04‑0.10％，Si：0.1％‑0.2％，Mn：1.0‑2.0％，P≤0.015％，S≤0.004％，Al≤0.04％，N≤0.0050％，Re：0.1‑0.4％，以及Cr：0.25‑0.45％、Mo：0.1‑0.4％、Ni：0.1‑0.4％中任意两种元素；还包括：V：0.05‑0.10％和Ti：0.010‑0.03％或者Nb：0.04‑0.06％，余量为Fe和不可避免的杂质；其内部显微组织为粒状贝氏体。获得了具有优良翻边性能和表面质量的复相钢，同时具有良好的综合力学性能。
摘要（英）：

The invention discloses a hot-rolled multi-phase steel with excellent flangability and production method thereof, belonging to technical field of steelmaking. The hot-rolled multi-phase steel comprises the following chemical components by mass: 0.04 to 0.10% of C, 0.1 to 0.2% of Si, 1.0 to 2.0% of Mn, no more than 0.015% of P, no more than 0.004% of S, no more than 0.04% of Al, no more than 0.0050% of N, 0.1 to 0.4% of Re, any two selected from a group consisting of 0.25 to 0.45% of Cr, 0.1 to 0.4% of Mo and 0.1 to 0.4% of Ni, and any one selected from a group consisting of 0.04 to 0.06% of Nb and a mixture of 0.05 to 0.10% of V and 0.010 to 0.03% of Ti, with the balance being Fe and unavoidable impurities. The interior microscopic structure of the hot-rolled multi-phase steel is granular bainite. The hot-rolled multi-phase steel in the invention has good flangability, surface quality and comprehensive mechanical properties.

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