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    • 4. 发明授权
    • Method for continuously tin-electroplating metal strip
    • 连续锡电镀金属条的方法
    • US5391290A
    • 1995-02-21
    • US38529
    • 1993-03-29
    • Mikiyuki IchibaHiroki IwasaToyofumi WatanabeMasaaki YamashitaKatsumi Kojima
    • Mikiyuki IchibaHiroki IwasaToyofumi WatanabeMasaaki YamashitaKatsumi Kojima
    • C25D3/32C25D5/20
    • C25D5/20C25D3/32
    • 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.
    • 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。