The invention discloses a high-ductility and high-strength steel plate EH36 and a preparation method and application thereof. The high-ductility and high-strength steel plate EH36 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: 0.10%-0.12% of C, 0.25%-0.35% of Si, 0.90%-1.00% of Mn, less than or equal to 0.010% of P, less than or equal to 0.003% of S, 0.03%-0.04% of Nb, 0.008%-0.02% of Ti, 0.015%-0.05% of Al, 0.30%-0.40% 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EH36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:C0.10%~0.12%,Si0.25%~0.35%,Mn0.90%~1.00%,P≤0.010%,S≤0.003%,Nb0.03%~0.04%,Ti0.008%~0.02%,Al0.015%~0.05%,Cr0.30%~0.40%,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。


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    Title :

    High-ductility and high-strength steel plate EH36 as well as preparation method and application thereof


    Additional title:

    一种高延展性高强钢板EH36及其制备方法和应用


    Contributors:
    YU QING (author) / YANG JIANHUA (author) / GAO QING (author) / YUAN RENPING (author) / BAI XING (author) / ZHANG YONGWEI (author) / ZHANG QINGXUE (author)

    Publication date :

    2024-03-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / B21B Walzen von Metall , ROLLING OF METAL / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / C22C Legierungen , ALLOYS



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