GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME
    6.
    发明申请
    GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 审中-公开
    钢化钢板及其制造方法

    公开(公告)号:US20110226387A1

    公开(公告)日:2011-09-22

    申请号:US13129504

    申请日:2009-04-22

    IPC分类号: C23C22/05 C22C38/00

    CPC分类号: C23C2/26 C23C8/02 C23C22/53

    摘要: A method for manufacturing a galvanized steel sheet, includes: galvanizing a steel sheet; bringing the surface of the steel sheet into contact with an aqueous solution containing zinc ion in the range of 5 to 100 g/l as the zinc ion concentration, having a pH of 4 to 6, and having a liquid temperature of 20 to 70° C., holding the steel sheet for 1 to 60 seconds; and then washing and drying the steel sheet. The solution containing zinc is preferably one containing zinc sulfate, for example. According to the method, a galvanized steel sheet having an oxide layer having an average thickness of 10 nm or more and mainly containing zinc formed on the surface of the steel sheet and having excellent press formability can be stably manufactured in a short time.

    摘要翻译: 一种镀锌钢板的制造方法,包括:镀锌钢板; 使钢板的表面与含有5〜100g / l的锌离子的水溶液作为锌离子浓度接触,pH为4〜6,液温为20〜70℃ C.保持钢板1〜60秒; 然后洗涤和干燥钢板。 含锌的溶液例如优选含有硫酸锌的溶液。 根据该方法,可以在短时间内稳定地制造具有平均厚度为10nm以上且主要含有形成在钢板表面上的锌并且具有优异的压制成形性的氧化物层的镀锌钢板。

    Method of manufacturing hot dip galvannealed steel sheet and hot dip galvannealed steel sheet
    9.
    发明授权
    Method of manufacturing hot dip galvannealed steel sheet and hot dip galvannealed steel sheet 有权
    热浸合金化热镀锌钢板和热浸合金化热镀锌钢板的制造方法

    公开(公告)号:US08268095B2

    公开(公告)日:2012-09-18

    申请号:US12226168

    申请日:2007-04-26

    IPC分类号: C23C22/48 C23C22/05

    摘要: A method of manufacturing a hot dip galvannealed steel sheet, including the steps of: subjecting a steel sheet to hot dip galvanizing to manufacture a hot dip galvanized steel sheet; heating the hot dip galvanized steel sheet for alloying; subjecting the hot dip galvanized steel sheet to temper rolling; bringing the temper-rolled hot dip galvanized steel sheet into contact with an acid solution containing at least one ion selected from the group consisting of Zr ions, Ti ions, and Sn ions to thereby form an acid solution film on the surface of the steel sheet; after completion of the contact, a state where the acid solution film is formed on the surface of the steel sheet is held for at least 1 second; and washing with water the hot dip galvanized steel sheet after holding, to thereby form a Zn oxide layer having a thickness of 10 nm or more on the surface of the galvanized steel sheet. The hot dip galvannealed steel sheet has an oxide layer having an average thickness of 10 nm or more on the surface of the plated steel sheet.

    摘要翻译: 一种制造热浸镀锌钢板的方法,包括以下步骤:对钢板进行热浸镀锌以制造热浸镀锌钢板; 加热热镀锌钢板进行合金化; 对热浸镀锌钢板进行回火轧制; 使回火热浸镀锌钢板与含有选自Zr离子,Ti离子和Sn离子中的至少一种离子的酸溶液接触,从而在钢板表面形成酸溶液膜 ; 接触完成后,在钢板表面形成酸溶液膜的状态保持至少1秒钟; 并在保持之后用水洗涤热浸镀锌钢板,从而在镀锌钢板的表面上形成厚度为10nm以上的Zn氧化物层。 热镀锌合金化热镀锌钢板在镀覆钢板的表面上具有平均厚度为10nm以上的氧化物层。

    HOT DIP AL-ZN COATED STEEL SHEET
    10.
    发明申请
    HOT DIP AL-ZN COATED STEEL SHEET 审中-公开
    HOT DIP AL-ZN涂层钢板

    公开(公告)号:US20120135271A1

    公开(公告)日:2012-05-31

    申请号:US13322638

    申请日:2010-05-27

    IPC分类号: B32B15/01

    摘要: A hot dip Al—Zn coated steel sheet exhibits excellent corrosion resistance. The Al content in a coated film is 20-95% by mass. The Ca content is 0.01-10% by mass. Alternatively, the total content of Ca and Mg is 0.01-10% by mass. Preferably, the coated film includes an upper layer and an alloy phase present at the interface to a substrate steel sheet, and Ca or Ca and Mg are contained primarily in the upper layer. Also preferably, the Ca or Ca and Mg include an intermetallic compound with at least one type selected from Zn, Al, and Si. If Ca or Ca and Mg are contained in the coated film, as described above, these elements are contained in corrosion products generated in a bonded portion and exert effects of stabilizing the corrosion products and retarding proceeding of corrosion thereafter. Then, as a result, the corrosion resistance is improved.

    摘要翻译: 热浸镀铝锌钢板表现出优异的耐腐蚀性。 涂膜中的Al含量为20〜95质量%。 Ca含量为0.01〜10质量%。 或者,Ca和Mg的总含量为0.01〜10质量%。 优选地,涂膜包括在与基板钢板的界面处存在的上层和合金相,并且Ca或Ca和Mg主要包含在上层中。 还优选地,Ca或Ca和Mg包括具有选自Zn,Al和Si中的至少一种的金属间化合物。 如果如上所述,如果在涂膜中含有Ca或Ca和Mg,则这些元素被包含在接合部分产生的腐蚀产物中,并且具有稳定腐蚀产物的作用,并且此后延迟腐蚀进行。 结果,耐腐蚀性提高。