Method for continuously tin-electroplating metal strip
    7.
    发明授权
    Method for continuously tin-electroplating metal strip 失效
    连续锡电镀金属条的方法

    公开(公告)号:US5391290A

    公开(公告)日:1995-02-21

    申请号:US38529

    申请日:1993-03-29

    IPC分类号: C25D3/32 C25D5/20

    CPC分类号: C25D5/20 C25D3/32

    摘要: A method for continuously tin-electroplating a metal strip, which comprises the steps of: causing a DC electric current to flow between a metal strip and an anode arranged adjacent to the metal strip while passing the metal strip at a travelling speed of at least 1 m/minute through an acidic tin-electroplating solution containing tin ions and an organic acid within a range of from 4.8 to 98 g/l as converted into sulfuric acid, to form a tin-electroplating layer on at least one surface of the metal strip; and applying an ultrasonic vibration, emitted from at least one ultrasonic vibrator and having an intensity within a range of from 0.01 to 1,000 W/100 cm.sup.2 and a frequency within a range of from 25 to 55 kHz, to the acidic tin-electroplating solution between the metal strip and the anode, thereby removing a diffusion layer of tin ions existing in the acidic tin-electroplating solution adjacent to the surface of the metal strip.

    摘要翻译: 一种用于连续锡电镀金属带的方法,其特征在于包括以下步骤:使金属带与邻近金属带布置的阳极之间的直流电流流动,同时使金属带以至少1的行进速度通过 m /分钟,通过含有锡离子和有机酸的酸性锡 - 电镀溶液,其转化为硫酸在4.8至98g / l的范围内,以在金属带的至少一个表面上形成锡 - 电镀层 ; 将从至少一个超声波振子发射的强度为0.01〜1000W / 100cm 2,频率范围为25〜55kHz的超声波振动施加到酸性锡 - 电镀液 金属带和阳极,从而除去存在于与金属带的表面相邻的酸性锡 - 电镀溶液中的锡离子的扩散层。

    Method for manufacturing tin-electroplated cold-rolled steel strip
    8.
    发明授权
    Method for manufacturing tin-electroplated cold-rolled steel strip 失效
    镀锡冷轧钢带的制造方法

    公开(公告)号:US5275716A

    公开(公告)日:1994-01-04

    申请号:US029781

    申请日:1993-03-11

    IPC分类号: C25D5/48 C25D7/06

    CPC分类号: C25D5/48

    摘要: A method for manufacturing a tin-electroplated cold-rolled steel strip, which comprises the steps of: continuously annealing a degreased cold-rolled steel strip; then, subjecting, following the continuous annealing treatment, the continuously annealed cold-rolled steel strip to a continuous tin-electroplating treatment in a tin-electroplating bath to form, on at least one surface of the cold-rolled steel strip, a tin-electroplating layer having a plating weight within a range of from 0.1 to 2.8 g/m.sup.2 per surface of the cold-rolled steel strip; and then, temper-rolling, following the continuous tin-electroplating treatment, the cold-rolled steel strip having the tin-electroplating layer on at least one surface thereof, at a reduction ratio within a range of from 1 to 5%.

    摘要翻译: 一种用于制造镀锡冷轧钢带的方法,包括以下步骤:连续退火脱脂冷轧钢带; 然后,在连续退火处理之后,使连续退火的冷轧钢带在锡 - 电镀浴中进行连续锡电镀处理,以在冷轧钢带的至少一个表面上形成锡 - 电镀层,其镀层重量在冷轧钢带表面0.1〜2.8g / m2的范围内; 然后在连续锡电镀处理之后,在其至少一个表面上具有锡 - 电镀层的冷轧钢带以1%至5%的范围内的压缩比进行回火。

    Method for manufacturing electrolytically chromated steel sheet
    9.
    发明授权
    Method for manufacturing electrolytically chromated steel sheet 失效
    电解铬酸盐钢板的制造方法

    公开(公告)号:US4875984A

    公开(公告)日:1989-10-24

    申请号:US309683

    申请日:1989-02-10

    IPC分类号: C25D11/38

    CPC分类号: C25D11/38

    摘要: A method for manufacturing an electrolytically chromated steel sheet, comprising the steps of: subjecting a steel sheet to an anodic electrolytic treatment with a quantity of electricity of from 0.3 to 30 coulomb/dm.sup.2 in an acidic electrolyte containing at least one of chromic anhydride, chromate and bichromate, to form a hydrated chromium oxide film having numerous holes and numerous thin portions over the entire area of at least one surface of the steel sheet; and then subjecting the anodically treated steel sheet to a cathodic electrolytic chromate treatment in an acidic electrolytic chromating solution to form on the at least one surface of the steel sheet a chromate film comprising a metallic chromium layer as a lower layer having thereon numerous granular projections, and a hydrated chromium oxide layer as an upper layer. The electrolytically chromated steel sheet manufactured in accordance with the method of the present invention has excellent secondary paint adhesion and weldability, and has a satisfactory surface hue.