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。


    Access

    Download


    Export, share and cite



    Title :

    High-ductility and high-strength steel plate EH32 as well as preparation method and application thereof


    Additional title:

    一种高延展性高强钢板EH32及其制备方法和应用


    Contributors:
    YU QING (author) / LIU JIWEN (author) / GAO QING (author) / CHEN LIZHOU (author) / SHI SHUHUA (author) / ZHANG QINGXUE (author) / WANG HONGTAO (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



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

    YU QING / YANG JIANHUA / GAO QING et al. | European Patent Office | 2024

    Free access

    High-Strength, High-Ductility Layer-Integrated Steel

    Koseki, T. / Society of Automotive Engineers of Japan | British Library Conference Proceedings | 2008


    900MPa-grade high-strength steel as well as preparation method and application thereof

    WANG CHAOBIN / LIU SHISHUANG / LI JI et al. | European Patent Office | 2025

    Free access

    Strength and ductility of high strength steel with tempered martensite

    Korida,K. / Miyoshi,T. / Shirasawa,H. et al. | Automotive engineering | 1989


    High-strength steel for hull structure as well as preparation process and application of high-strength steel

    LI YING / HUANG ZHIXIN / DU JINLIANG | European Patent Office | 2025

    Free access