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    • 3. 发明授权
    • Method of producing metallic chromium, tin or tin-nickel, and hydrated
chromium oxide electroplated steel
    • 生产金属铬,锡或锡镍,以及水合氧化铬电镀钢的方法
    • US4608130A
    • 1986-08-26
    • US608088
    • 1984-05-08
    • Nobuyoshi ShimizuTerunori FujimotoTsuneo InuiMasatoki Ishida
    • Nobuyoshi ShimizuTerunori FujimotoTsuneo InuiMasatoki Ishida
    • C25D5/12C25D11/38
    • C25D11/38C25D5/12Y10S205/917
    • Surface treated steel sheet having three layers consisting of a bottom layer of metallic chromium, a middle layer of metallic tin or tin-nickel alloy and a top layer of hydrated chromium oxide on a steel base, and a method for the continuous production of this surface treated steel sheet which comprises; (1) chromium plating on a steel base to form a layer of metallic chromium and hydrated chromium oxide, (2) tin plating by using a tin plating electrolyte having a low concentration of stannous ion or tin-nickel alloy plating by using a known tin-nickel alloy plating electrolyte, said electrolytes have a low current efficiency for tin or tin-nickel alloy plating, thereby removing said layer of hydrated chromium oxide from said chromium plated steel base; and (3) forming a layer of hydrated chromium oxide by a chromate treatment by using an acidic electrolyte containing hexavalent chromium ion.Instead of the process (2) in the above method, a cathodic treatment of chromium plated steel base in an acidic solution having a pH of 0.5 to 2.0 can be carried out for the removal of hydrated chromium oxide formed during chromium plating, and thereafter, tin or tin-nickel alloy plating by using a known tin or tin-nickel alloy plating electrolyte can be performed.By using this surface treated steel sheet, a welded can body can be produced at high speed without the removal of the plated layer in the welded part since it has an excellent weldability.
    • 具有由金属铬底层,金属锡或锡镍合金中间层和钢基底上的水合氧化铬顶层构成的三层的表面处理钢板以及连续制造该表面的方法 处理钢板; (1)在钢基上镀铬以形成金属铬和水合氧化铬的层,(2)通过使用已知锡的锡亚锡离子或锡 - 镍合金镀层的低浓度的锡电镀电解质进行镀锡 镍合金电镀电解质,所述电解质对锡或锡 - 镍合金电镀具有低电流效率,从而从所述镀铬钢基底除去所述水合氧化铬层; 和(3)通过使用含有六价铬离子的酸性电解质通过铬酸盐处理形成水合氧化铬层。 代替上述方法的方法(2),可以进行在pH为0.5至2.0的酸性溶液中的镀铬钢基体的阴极处理,以除去镀铬期间形成的水合氧化铬,然后, 可以使用已知的锡或锡 - 镍合金电镀电解质进行锡或锡 - 镍合金镀层。 通过使用这种表面处理钢板,可以高速度地制造焊接罐体,而不会在焊接部分中除去镀层,因为它具有优异的焊接性。
    • 4. 发明授权
    • Tin free steel having an excellent weldability and its production method
    • 具有优良焊接性的无铅钢及其制造方法
    • US4508790A
    • 1985-04-02
    • US619271
    • 1984-06-11
    • Nobuyoshi ShimizuTerunori FujimotoTsuneo InuiMasatoki Ishida
    • Nobuyoshi ShimizuTerunori FujimotoTsuneo InuiMasatoki Ishida
    • C25D5/12C25D5/48C25D11/38C25D5/34
    • C25D5/12C25D11/38C25D5/48Y10T428/12611Y10T428/12792Y10T428/12847Y10T428/12944
    • Tin free steel having three layers consisting of a bottom layer of metallic chromium, a middle layer of nickel-zinc alloy containing 10 to 90 weight percent of zinc and a top layer of hydrated chromium oxide on a steel base, and a method for the continuous production of this tin free steel which comprises:(a) chromium plating a steel base to form a layer of metallic chromium and hydrated chromium oxide, (b) nickel-zinc alloy plating the chromium plated steel base by using a nickel-zinc alloy plating electrolyte sufficiently acidic to dissolve the hydrated chromium oxide and (c) forming a hydrated chromium oxide layer on the chromium plated nickel-zinc plated steel base.Instead of (b) in the above method, a cathodic treatment in an acidic solution can be carried out for the removal of hydrated chromium oxide formed during chromium plating, and thereafter nickel-zinc alloy plating can be carried out by using a known nickel-zinc alloy plating electrolyte.This tin free steel is useful for producing welded can bodies at high speed without removing the plated layer in the welded part, since it has an excellent weldability.
    • 具有金属铬底层,含有10〜90重量%锌的镍 - 锌合金的中间层和钢基上的水合氧化铬顶层的三层无锡钢,以及连续的 该无锡钢的制造方法包括:(a)镀铬钢基以形成金属铬和水合氧化铬层,(b)通过使用镍 - 锌合金电镀电镀镀铬钢基体的镍 - 锌合金 电解质充分酸化以溶解水合氧化铬,和(c)在镀铬的镀镍钢基体上形成水合氧化铬层。 代替(b)在上述方法中,可以进行酸性溶液中的阴极处理以除去在镀铬期间形成的水合氧化铬,然后可以使用已知的镍 - 锌合金电镀电解液。 由于具有优异的焊接性,所以这种无锡钢可以高效地生产焊接罐体,而不需要去除焊接部件中的镀层。
    • 5. 发明授权
    • Surface treated steel sheet having an excellent weldability and its
production method
    • 具有优异的焊接性的表面处理钢板及其制造方法
    • US4578319A
    • 1986-03-25
    • US782262
    • 1985-09-30
    • Nobuyoshi ShimizuTerunori FujimotoTsuneo InuiMasatoki Ishida
    • Nobuyoshi ShimizuTerunori FujimotoTsuneo InuiMasatoki Ishida
    • C25D5/12C25D11/38
    • C25D5/12C25D11/38Y10T428/1259Y10T428/12611Y10T428/12722Y10T428/12806Y10T428/12847Y10T428/12854
    • Surface treated steel sheet having three layers consisting of a bottom layer of metallic chromium, a middle layer of metallic tin or tin-nickel alloy and a top layer of hydrated chromium oxide on a steel base, and a method for the continuous production of this surface treated steel sheet which comprises; (1) chromium plating on a steel base to form a layer of metallic chromium and hydrated chromium oxide, (2) tin plating by using a tin plating electrolyte having a low concentration of stannous ion or tin-nickel alloy plating by using a known tin-nickel alloy plating electrolyte, said electrolytes have a low current efficiency for tin or tin-nickel alloy plating, thereby removing said layer of hydrated chromium oxide from said chromium plated steel base; and (3) forming a layer of hydrated chromium oxide by a chromate treatment by using an acidic electrolyte containing hexavalent chromium ion.Instead of the process (2) in the above method, a cathodic treatment of chromium plated steel base in an acidic solution having a pH of 0.5 to 2.0 can be carried out for the removal of hydrated chromium oxide formed during chromium plating, and thereafter, tin or tin-nickel alloy plating by using a known tin or tin-nickel alloy plating electrolyte can be performed.By using this surface treated steel sheet, a welded can body can be produced at high speed without the removal of the plated layer in the welded part since it has an excellent weldability.
    • 具有由金属铬底层,金属锡或锡镍合金中间层和钢基底上的水合氧化铬顶层构成的三层的表面处理钢板以及连续制造该表面的方法 处理钢板; (1)在钢基上镀铬以形成金属铬和水合氧化铬的层,(2)通过使用已知锡的锡亚锡离子或锡 - 镍合金镀层的低浓度的锡电镀电解质进行镀锡 镍合金电镀电解质,所述电解质对锡或锡 - 镍合金电镀具有低电流效率,从而从所述镀铬钢基底除去所述水合氧化铬层; 和(3)通过使用含有六价铬离子的酸性电解质通过铬酸盐处理形成水合氧化铬层。 代替上述方法的方法(2),可以进行在pH为0.5至2.0的酸性溶液中的镀铬钢基体的阴极处理,以除去镀铬期间形成的水合氧化铬,然后, 可以使用已知的锡或锡 - 镍合金电镀电解质进行锡或锡 - 镍合金镀层。 通过使用这种表面处理钢板,可以高速度地制造焊接罐体,而不会在焊接部分中除去镀层,因为它具有优异的焊接性。