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    • 3. 发明授权
    • Method for manufacturing hot dip galvanized steel sheet
    • 热镀锌钢板的制造方法
    • US09260774B2
    • 2016-02-16
    • US13638188
    • 2011-03-14
    • Katsuya HoshinoTakahiro KubotaMasahiko TadaMasayasu NagoshiWataru TanimotoHideo KijimaKazuhiko Higai
    • Katsuya HoshinoTakahiro KubotaMasahiko TadaMasayasu NagoshiWataru TanimotoHideo KijimaKazuhiko Higai
    • C23C2/06C23C2/26C23C28/02B21B1/22
    • C23C2/26B21B1/22B21B2001/228C23C2/06C23C22/53C23C22/83C23C28/025C23C28/345
    • 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≧2.0 μm at rolling reduction rate ≦5% and then with a bright roll having Ra≦0.1 μm at rolling reduction rate ≦3% or rolling the steel sheet first with a bright roll having Ra≦0.1 μm at rolling reduction rate ≦3% and then with a dull roll having Ra≦2.0 μm at rolling reduction rate ≦5%.
    • 本发明的目的是,在不需要碱预处理的情况下,可以在镀锌后未进行合金化的热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氧化锌层的热浸镀锌钢板。 具体而言,本发明提供一种热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:通过用Ra≧的钝辊首先轧制钢板进行回火轧制, 轧制压下率为2.0μm,nlE为5%,然后以Ra&nlE为光亮辊;在轧制压下率为0.1μm的条件下,首先用Ra&nlE的光辊轧制钢板,轧制压下率为0.1μm; 3%,然后用具有Ra&nlE的钝辊;2.0μm的轧制压下率≦̸ 5%。
    • 6. 发明申请
    • METHOD FOR MANUFACTURING HOT DIP GALVANIZED STEEL SHEET
    • 制造热镀锌钢板的方法
    • US20130086960A1
    • 2013-04-11
    • US13638188
    • 2011-03-14
    • Katsuya HoshinoTakahiro KubotaMasahiko TadaMasayasu NagoshiWataru TanimotoHideo KijimaKazuhiko Higai
    • Katsuya HoshinoTakahiro KubotaMasahiko TadaMasayasu NagoshiWataru TanimotoHideo KijimaKazuhiko Higai
    • C23C2/26C23C2/06
    • C23C2/26B21B1/22B21B2001/228C23C2/06C23C22/53C23C22/83C23C28/025C23C28/345
    • 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≧2.0 μm at rolling reduction rate ≦5% and then with a bright roll having Ra≦0.1 μm at rolling reduction rate ≦3% or rolling the steel sheet first with a bright roll having Ra≦0.1 μm at rolling reduction rate ≦3% and then with a dull roll having Ra≦2.0 μm at rolling reduction rate ≦5%.
    • 本发明的目的是,在不需要碱预处理的情况下,可以在镀锌后未进行合金化的热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氧化锌层的热浸镀锌钢板。 具体而言,本发明提供一种热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:通过用Ra≧的钝辊首先轧制钢板进行回火轧制, 轧制压下率为2.0μm,nlE为5%,然后以Ra&nlE为光亮辊;在轧制压下率为0.1μm的条件下,首先用Ra&nlE的光辊轧制钢板,轧制压下率为0.1μm; 3%,然后用具有Ra&nlE的钝辊;2.0μm的轧制压下率≦̸ 5%。
    • 8. 发明授权
    • Method for evaluating press-formability of galvanized steel sheet
    • 镀锌钢板冲压成形性评价方法
    • US07646846B2
    • 2010-01-12
    • US11989391
    • 2005-09-22
    • Wataru TanimotoHisato Noro
    • Wataru TanimotoHisato Noro
    • G01N23/223
    • C23C2/14G01N23/223G01N2223/076
    • 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.
    • 将具有10nm〜100nm的厚度的氧化膜作为表面层的镀锌钢板的冲压成形性非破坏性地进行评价。 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射线分散在表现出衍射角差异的分析晶体之间 2次以上的主氧气Kalpha x射线和次级锌Lbeta x射线,检测分散在分散体中并主要含有主氧气Kalpha x射线的X射线,用检测器分离 相对于参考(100%),能量水平范围为±25%至±75%的X射线,其为来自X射线的主氧Kalpha x射线的能级,其在 检测并主要包含主氧气Kalpha x射线,通过调整脉冲高度分析仪的窗口宽度,测量分离中分离的X射线的强度,并评估镀锌钢板的冲压成型性 的基础 在测量中测量的X射线的数量。
    • 10. 发明授权
    • Method of analyzing oxygen and oxide in metallic material
    • 分析金属材料中氧和氧化物的方法
    • US06480274B1
    • 2002-11-12
    • US09446530
    • 1999-12-28
    • Akira YamamotoWataru Tanimoto
    • Akira YamamotoWataru Tanimoto
    • G01N2167
    • G01N21/67
    • This invention provides a quantitative determination method capable of quickly determining a mean composition of oxide type inclusions and oxygen concentration of a metallic material such as a steel by using an optical emission spectrometer alone. This method comprises the steps of (1) conducting a plurality of times a discharge operation between the metallic material and an opposing electrode in an inert gas atmosphere to obtain an emission spectrochemical spectrum, (2) selecting a discharge in which at least either the oxygen A spectrum or the oxide-forming element spectrum exceed a predetermined intensity for each discharge operation, and (3) subtracting a background from the intensity of the oxygen spectrum and/or the intensity of the oxide-forming elements in the selected discharge, accumulating the balances to obtain a cumulative spectral intensity, and executing quantitative determination by a calibration curve method.
    • 本发明提供了一种能够通过单独使用光发射光谱仪快速测定诸如钢等金属材料的氧化物型夹杂物的平​​均成分和氧浓度的定量测定方法。 该方法包括以下步骤:(1)在惰性气体气氛中进行金属材料与对置电极之间的放电操作多次以获得发射光谱化学光谱,(2)选择放电,其中至少一个氧 对于每个放电操作,光谱或氧化物形成元素光谱超过预定强度,和(3)从所选择的放电中的氧光谱强度和/或氧化物形成元素的强度减去背景, 平衡以获得累积光谱强度,并通过校准曲线法进行定量测定。