The invention discloses a high-ductility and high-strength steel plate EH32 and a preparation method and application thereof. The high-ductility and high-strength steel plate EH32 is produced through the steps of smelting, primary rolling, secondary rolling, cooling and heat treatment. The steel comprises the following components in percentage by weight: 0.07%-0.09% of C, 0.25%-0.35% of Si, 0.80%-0.89% of Mn, less than or equal to 0.010% of P, less than or equal to 0.003% of S, 0.02%-0.03% of Nb, 0.008%-0.02% of Ti, 0.015%-0.05% of Al, 0.19%-0.29% of Cr and the balance of Fe and inevitable impurity elements. The high-strength steel plate is applied to hull manufacturing, has good obdurability, yield strength and tensile strength, impact energy at-40 DEG C is larger than or equal to 200 J, the ductility of the steel plate is larger than or equal to 40%, and the high-strength steel plate has excellent ductility and collision resistance and can well meet the anti-collision requirements of military and civil ships.
本发明公开了一种高延展性高强钢板EH32及其制备方法和应用,采用冶炼、一次轧制、二次轧制、冷却、热处理的步骤生产。成分及重量百分比:C 0.07%~0.09%,Si 0.25%~0.35%,Mn 0.80%~0.89%,P≤0.010%,S≤0.003%,Nb 0.02%~0.03%,Ti 0.008%~0.02%,Al 0.015%~0.05%,Cr 0.19%~0.29%,余量为Fe和不可避免的杂质元素。本发明高强钢板应用于船体制造,具有良好的强韧性和屈服强度以及抗拉强度,‑40℃冲击功≥200J,钢板的延伸率≥40%,具有优异的延展性和抗碰撞性能,能较好地满足军用和民用船的防撞要求。
High-ductility and high-strength steel plate EH32 as well as preparation method and application thereof
一种高延展性高强钢板EH32及其制备方法和应用
2024-03-26
Patent
Elektronische Ressource
Chinesisch
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