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    • 13. 发明申请
    • HIGH TENSILE STRENGTH HOT-DIP GALVANNEALED STEEL SHEET HAVING EXCELLENT COATED-LAYER ADHESIVENESS AND METHOD FOR PRODUCING SAME
    • 具有优异的涂层粘合剂的高拉伸强度热镀锌钢板及其制造方法
    • US20140030547A1
    • 2014-01-30
    • US14111819
    • 2011-04-20
    • Minoru ChidaHiroshi Irie
    • Minoru ChidaHiroshi Irie
    • C23C2/06C23C2/26
    • C23C2/06C23C2/26C23C2/28Y10T428/12799
    • A high tensile strength hot-dip galvannealed steel sheet having excellent coated-layer adhesiveness in which the hot-dip galvannealed layer does not peel off from a base steel sheet even in being subjected to working accompanied by sliding and a method for producing the same are provided. In the high tensile strength hot-dip galvannealed steel sheet, a hot-dip galvannealed layer is formed on the surface of the base steel sheet, the base steel sheet contains Si by 0.04-2.5%, and, when the surface roughness of the base steel sheet after the hot-dip galvannealed layer is removed by dissolution with an acid is measured for a plurality of locations by a laser microscope, the arithmetic mean inclination angle (RΔa) is 23.0° or more and the root mean square inclination angle (RΔq) is 29.0° or more in 60% or more of all of the locations measured.
    • 即使在伴随着滑动进行加工的情况下,浸渍合金化热浸镀层也不会从基础钢板剥离的涂布层粘合性优异的高强度热浸镀锌合金化热镀锌钢板及其制造方法, 提供。 在高拉伸强度热浸合金化热镀锌钢板中,在基体钢板的表面上形成热浸镀锌合金层,基体钢板含有0.04〜2.5%的Si,并且当基体的表面粗糙度 通过激光显微镜测量多个位置,通过用酸溶解除去热浸镀锌合金化锌层后的钢板,算术平均倾角(RDeltaa)为23.0°以上,均方根倾角(RDeltaq )在所测量的所有位置的60%以上为29.0°以上。