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    METHOD OF MANUFACTURE FOR MOLTEN ZINC-PLATED SHEET STEEL
    1.
    发明公开
    METHOD OF MANUFACTURE FOR MOLTEN ZINC-PLATED SHEET STEEL 有权
    VERFAHREN ZUR HERSTELLUNG EINES GESCHMOLZENEN ZINKPLATTIERTEN STAHLBLECHS

    公开(公告)号：EP2554707A1

    公开(公告)日：2013-02-06

    申请号：EP11762163.1

    申请日：2011-03-14

    申请人： JFE Steel Corporation

    发明人： HOSHINO, Katsuya ,  KUBOTA, Takahiro ,  TADA, Masahiko ,  NAGOSHI, Masayasu ,  TANIMOTO, Wataru ,  KIJIMA, Hideo ,  HIGAI, Kazuhiko

    IPC分类号： C23C2/26 ,  B21B1/22 ,  C23C2/06 ,  C23C22/06 ,  C23C28/00

    CPC分类号： C23C2/26 ,  B21B1/22 ,  B21B2001/228 ,  C23C2/06 ,  C23C22/53 ,  C23C22/83 ,  C23C28/025 ,  C23C28/345

    摘要： An object of the present invention is to make it possible, without necessitating an alkali pretreatment, to form a zinc oxide layer having excellent sliding properties on a hot dip galvanized steel sheet not subjected to alloying after galvanizing and thus having a relatively low degree of surface activity. Another object of the present invention is to make it possible to manufacture a hot dip galvanized steel sheet having higher area ratio of Zn oxide layer formed on a coating surface and larger thickness of the Zn oxide layer. Specifically, the present invention provides a method for manufacturing a hot dip galvanized steel sheet comprising: subjecting a steel sheet to hot dip galvanizing and subsequent temper rolling; bringing the steel sheet into contact with acidic solution having pH buffering capacity; retaining the steel sheet for 1 second to 60 seconds after the contact with the acidic solution; and rinsing the steel sheet with water, to form a zinc oxide layer on a coating surface of the steel sheet, characterized in that the method further comprising:
    carrying out the temper rolling by either rolling the steel sheet first with a dull roll having Ra ≥ 2.0µm at rolling reduction rate ≤ 5% and then with a bright roll having Ra ≤ 0.1µm at rolling reduction rate ≤ 3% or rolling the steel sheet first with a bright roll having Ra ≤ 0.1µm at rolling reduction rate ≤ 3% and then with a dull roll having Ra ≥ 2.0µm at rolling reduction rate ≤ 5%.

    摘要翻译： 本发明的目的是，在不需要碱预处理的情况下，可以在镀锌后不进行合金化的热浸镀锌钢板上形成具有优异滑动性的氧化锌层，从而具有相对低的表面度 活动。 本发明的另一个目的是使得可以制造具有在涂层表面上形成的较高面积比的Zn氧化物层和较大厚度的Zn氧化物层的热浸镀锌钢板。 具体而言，本发明提供一种热浸镀锌钢板的制造方法，其特征在于，包括：对钢板进行热浸镀锌和随后的回火轧制; 使钢板与具有pH缓冲能力的酸性溶液接触; 在与酸性溶液接触后将钢板保持1秒至60秒; 并用水冲洗钢板，在钢板的涂层表面上形成氧化锌层，其特征在于，还包括：首先用具有Ra‰的钝辊轧制钢板进行调质轧制 轧制压下率为2.0μm，碾压率为‰¤¤¤¤¤‰‰¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤ 率‰¤3％，然后在碾压率‰¤5％时，具有Ra‰¥2.0μm的钝辊。

    PROCESS FOR PRODUCING ALLOYED HOT-DIP ZINC-PLATED STEEL SHEET AND ALLOYED HOT-DIP ZINC-PLATED STEEL SHEET
    2.
    发明公开
    PROCESS FOR PRODUCING ALLOYED HOT-DIP ZINC-PLATED STEEL SHEET AND ALLOYED HOT-DIP ZINC-PLATED STEEL SHEET 有权
    VERFAHREN ZUR HERSTELLUNG冯FEUERVERZINKTEM STAHLBLECH UND FEUERVERZINKTES STAHLBLECH

    公开(公告)号：EP2014783A1

    公开(公告)日：2009-01-14

    申请号：EP07742867.0

    申请日：2007-04-26

    申请人： JFE Steel Corporation

    发明人： MASUOKA, Hiroyuki ,  TAIRA, Shoichiro ,  SUGIMOTO, Yoshiharu ,  YOSHIMI, Naoto ,  NAGOSHI, Masayasu ,  TANIMOTO, Wataru

    IPC分类号： C23C2/26 ,  C23C2/06 ,  C23C2/28 ,  C23C22/53

    CPC分类号： C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40 ,  C23C22/08 ,  C23C22/53 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/26 ,  Y10T428/265

    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。

    PROCESS FOR PRODUCING HIGH-STRENGTH COLD-ROLLED STEEL SHEET
    4.
    发明公开
    PROCESS FOR PRODUCING HIGH-STRENGTH COLD-ROLLED STEEL SHEET 审中-公开
    生产高强度冷轧钢板的工艺

    公开(公告)号：EP2963157A1

    公开(公告)日：2016-01-06

    申请号：EP14757038.6

    申请日：2014-02-26

    申请人： JFE Steel Corporation

    发明人： TAIRA, Shoichiro ,  TANIMOTO, Wataru

    IPC分类号： C25D5/26 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C23G1/08 ,  C25D5/48

    CPC分类号： C25D5/36 ,  B32B15/013 ,  C21D1/26 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0236 ,  C21D9/46 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C22/07 ,  C23F17/00 ,  C23G1/08 ,  C25D3/22 ,  C25D5/48 ,  C25D7/0614 ,  C25F1/06

    摘要： The invention provides a process for manufacturing cold rolled steel sheets containing silicon as a strengthening element so as to obtain excellent conversion treatment properties and post-painting corrosion resistance.
    For the production of high-strength cold rolled steel sheets containing 0.5 to 2.0 mass% silicon, a process for manufacturing high-strength cold rolled steel sheets is adopted which includes a pickling step of thermally annealing a steel sheet in a non-oxidizing atmosphere and thereafter pickling the steel sheet to dissolve away 0.5 g/m 2 to less than 2.0 g/m 2 of the steel sheet, and an electroplating step of electroplating the surface of the steel sheet after pickling with zinc under such conditions that a coating mass of 100 to 5000 mg/m 2 is obtained.

    摘要翻译： 本发明提供一种制造含有硅作为强化元素的冷轧钢板的方法，以获得优异的转化处理性能和涂漆后耐腐蚀性。 为了制造含有0.5质量％〜2.0质量％的硅的高强度冷轧钢板，采用高强度冷轧钢板的制造方法，其包括在非氧化气氛中对钢板进行热退火的酸洗步骤和 之后酸洗钢板以溶解0.5g / m 2以上至低于2.0g / m 2的钢板，以及电镀步骤，在用锌酸洗后，在100至100g / m 2的涂层质量的条件下对钢板表面进行电镀 获得5000mg / m 2。

    METHOD OF EVALUATING PRESS FORMABILITY OF ZINC-BASED PLATED STEEL SHEET
    5.
    发明公开
    METHOD OF EVALUATING PRESS FORMABILITY OF ZINC-BASED PLATED STEEL SHEET 审中-公开
    VERFAHREN ZUR BEWERTUNG DER DRUCKFORMBARKEIT EINER VERZINKTEN STAHLPLATTE

    公开(公告)号：EP1927848A1

    公开(公告)日：2008-06-04

    申请号：EP05787876.1

    申请日：2005-09-22

    申请人： JFE Steel Corporation

    发明人： TANIMOTO, Wataru ,  NORO, Hisato

    IPC分类号： G01N23/223 ,  C23C2/26

    CPC分类号： C23C2/14 ,  G01N23/223 ,  G01N2223/076

    摘要： The press formability of a galvanized steel sheet including an oxide film, which has a thickness of 10 nm to 100 nm, as a surface layer is nondestructively speedily evaluated. A specific method for solving problems is characterized by including the steps of irradiating X-rays to a galvanized steel sheet, dispersing a fluorescent X-ray, which is excited and emitted in the applying, with an analyzing crystal exhibiting the difference in diffraction angle between a primary oxygen Kα x-ray and a secondary zinc Lβ x-ray of 2 degrees or more, detecting the X-ray, which is dispersed in the dispersing and which mainly contains the primary oxygen Kα x-ray, with a detector, separating an X-ray at an energy level within the range of ±25% to ±75% relative to the reference (100%) that is the energy level of the primary oxygen Kα x-ray from the X-ray, which is detected in the detecting and which mainly contains the primary oxygen Kα x-ray, by adjusting the window width of a pulse-height analyzer, measuring the intensity of the X-ray separated in the separating, and evaluating the press formability of the galvanized steel sheet on the basis of the intensity of the X-ray measured in the measuring.

    摘要翻译： 包含厚度为10nm〜100nm的氧化膜作为表面层的镀锌钢板的冲压成形性被非破坏性地评价。 解决问题的具体方法的特征在于包括以下步骤：将X射线照射到镀锌钢板上，将施加时被激发和发射的荧光X射线分散在分析晶体上，该分析晶体呈现出衍射角差异 2度以上的初级氧K±X射线和次级锌L 2 x射线，检测分散在分散体中并主要含有主氧K±x射线的X射线，检测器 ，相对于作为从X射线的主氧K±X射线的能级的参考（100％），将能量水平的X射线分离在±25％〜±75％的范围内， 通过调整脉冲高度分析器的窗口宽度，测量在分离中分离的X射线的强度，并且评估压力成形性，在检测中检测并主要包含主氧K±X射线 镀锌钢板基于X的强度 在测量中测量。