Method for manufacturing hot dip galvanized steel sheet
    1.
    发明授权
    Method for manufacturing hot dip galvanized steel sheet 有权
    热镀锌钢板的制造方法

    公开(公告)号:US09260774B2

    公开(公告)日:2016-02-16

    申请号:US13638188

    申请日:2011-03-14

    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≧2.0 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%.

    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%。

    METHOD FOR MANUFACTURING HOT DIP GALVANIZED STEEL SHEET
    2.
    发明申请
    METHOD FOR MANUFACTURING HOT DIP GALVANIZED STEEL SHEET 有权
    制造热镀锌钢板的方法

    公开(公告)号:US20130086960A1

    公开(公告)日:2013-04-11

    申请号:US13638188

    申请日:2011-03-14

    IPC分类号: C23C2/26 C23C2/06

    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≧2.0 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%.

    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%。

    Method of manufacturing hot dip galvannealed steel sheet and hot dip galvannealed steel sheet
    7.
    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。

    Method of Manufacturing Hot Dip Galvannealed Steel Sheet and Hot Dip Galvannealed Steel Sheet
    8.
    发明申请
    Method of Manufacturing Hot Dip Galvannealed Steel Sheet and Hot Dip Galvannealed Steel Sheet 有权
    制造热浸镀锌钢板和热浸镀锌钢板的方法

    公开(公告)号:US20090239063A1

    公开(公告)日:2009-09-24

    申请号:US12226168

    申请日:2007-04-26

    IPC分类号: B32B15/04 C21D8/02

    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。

    Method of analyzing oxygen and oxide in metallic material
    9.
    发明授权
    Method of analyzing oxygen and oxide in metallic material 失效
    分析金属材料中氧和氧化物的方法

    公开(公告)号:US06480274B1

    公开(公告)日:2002-11-12

    申请号:US09446530

    申请日:1999-12-28

    IPC分类号: G01N2167

    CPC分类号: G01N21/67

    摘要: 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.

    摘要翻译: 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。