PRODUCTION METHOD OF HOT ROLLED STEEL SHEET AND PRODUCTION METHOD OF HOT-DIP GALVANIZED STEEL SHEET
    6.
    发明申请
    PRODUCTION METHOD OF HOT ROLLED STEEL SHEET AND PRODUCTION METHOD OF HOT-DIP GALVANIZED STEEL SHEET 审中-公开
    热轧钢板的生产方法和热镀锌钢板的生产方法

    公开(公告)号:US20130202801A1

    公开(公告)日:2013-08-08

    申请号:US13641267

    申请日:2011-04-14

    IPC分类号: C23C2/02 B21D11/06

    摘要: A method for producing a hot rolled steel sheet includes a slab heating step of heating a steel slab in a slab heating furnace, a step of hot-rolling the heated steel slab in a rough rolling mill to form a strip and a finish rolling mill, and a coiling step of coiling the strip around a coiler. The atmosphere in steps from the slab heating step to the coiling step is a non-oxidizing atmosphere. The slab steel contains C: 0.01-0.15%, Si: 0.1-1.8%, Mn: 1.0-2.7%, Al: 0.01-1.5%, P: 0.005-0.025%, and S: 0.01% or less, by mass. A hot-dip galvanized steel sheet is produced by pickling the hot rolled steel sheet to remove mill scale, or by pickling the sheet and further cold-rolling the sheet, and subsequently by subjecting the resultant to hot-dip galvanizing.

    摘要翻译: 热轧钢板的制造方法包括在板坯加热炉中对钢坯进行加热的板坯加热工序,粗轧机中的加热钢板的热轧以形成带材和精轧机的工序, 以及将卷绕在卷取机周围的卷绕步骤。 从板坯加热步骤到卷取步骤的步骤的气氛是非氧化气氛。 钢坯的C:0.01-0.15%,Si:0.1〜1.8%,Mn:1.0〜2.7%,Al:0.01〜1.5%,P:0.005〜0.025%,S:0.01%以下。 通过酸洗热轧钢板以去除轧制规模,或通过酸洗酸洗和进一步冷轧板材,然后对所得物进行热浸镀锌来制造热浸镀锌钢板。

    Galvanized steel sheet
    10.
    发明授权
    Galvanized steel sheet 有权
    镀锌钢板

    公开(公告)号:US09074275B2

    公开(公告)日:2015-07-07

    申请号:US13130200

    申请日:2009-11-25

    摘要: A galvanized steel sheet includes a basal steel sheet (BSS) containing C: 0.01-0.15%, Si: 0.001-2.0%, Mn: 0.1-3.0%, Al: 0.001-1.0%, P: 0.005-0.060%, and S≦0.01% (% by mass), balance Fe and unavoidable impurities, with zinc plating layers on both sides of the BSS. One or more oxides selected from Fe, Si, Mn, Al, and P oxides are in steel sheet superficial portions in direct contact with the zinc plating layers and extending from each surface of the BSS to 100 μm deep. A crystalline oxide is in the regions from each surface of the BSS to 10 μm depth, which are also located in direct contact with the zinc plating layers, the crystalline oxide including Fe crystal grains within which Si and Mn atoms are distributed in the regions from grain boundaries to 1 μm deep inside the grain.

    摘要翻译: 镀锌钢板包括C:0.01-0.15%,Si:0.001-2.0%,Mn:0.1-3.0%,Al:0.001-1.0%,P:0.005-0.060%和S&NlE的基础钢板 ; 0.01%(质量%),余量为Fe和不可避免的杂质,两侧均镀锌层。 一种或多种选自Fe,Si,Mn,Al和P氧化物的氧化物位于与镀锌层直接接触并从BSS的每个表面延伸至100μm深的钢板表面部分中。 结晶氧化物在从BSS的每个表面到10μm深度的区域中,其也位于与镀锌层直接接触的区域中,包括Fe晶粒的晶体氧化物,其中Si和Mn原子分布在 晶粒边界到晶粒内1μm深。