PURPOSE: A Zn-Ni alloy electroplating composition for improving surface appearance, adhesion and anti-chipping of plating layer during plating, a preparation method of Zn-Ni alloy electroplated steel sheet for improving surface appearance, adhesion and anti-chipping of plating layer, and a Zn-Ni alloy electroplated steel sheet prepared by the method having improved surface appearance, adhesion and anti-chipping are provided. CONSTITUTION: The chlorine based Zn-Ni alloy electroplating composition comprises 0.5 to 8.0 ml/L of additive comprising 50 to 200 g/L of sodium sulfonate, 50 to 100 g/L of thiourea, 10 to 60 g/L of solution in which ethyl alcohol is mixed with ortho-vanillin in a weight ratio of 1:0.01 to 0.08 and a balance of water and contains zinc ion concentration of 0.5 to 2.0 moles, nickel ion concentration of 0.1 to 0.5 mole and chlorine ion concentration of 6.0 to 9.0 moles. The preparation method of a Zn-Ni alloy electroplated steel sheet comprises the process of plating the chlorine based Zn-Ni alloy electroplating composition on a base steel sheet under the plating conditions that pH of plating solution is 2.5 to 4.5, temperature of the plating solution is 50 to 70 deg.C, current density is 40 to 200 A/dm¬2, and a relative flow rate of the plating solution and the cathode is 1.0 to 2.5 m/sec. The Zn-Ni alloy electroplated steel sheet is characterized in that it is prepared by the preparation method of the Zn-Ni alloy electroplated steel sheet.
展开▼
机译:用途:一种用于改善镀层表面外观,附着力和抗崩解的锌镍合金电镀组合物,一种用于改善镀层表面外观,附着力和抗崩解的锌镍合金电镀钢板的制备方法,本发明提供一种通过改善外观,密合性和抗崩裂性的方法制备的Zn-Ni合金电镀钢板。组成:基于氯的锌-镍合金电镀组合物包含0.5至8.0 ml / L的添加剂,其中包括50至200 g / L的磺酸钠,50至100 g / L的硫脲,10至60 g / L的溶液,其中乙醇与原香兰素以1:0.01至0.08的重量比和余量的水混合,其锌离子浓度为0.5至2.0摩尔,镍离子浓度为0.1至0.5摩尔,氯离子浓度为6.0至9.0。痣。 Zn-Ni合金电镀钢板的制备方法包括以下步骤:在电镀液的pH为2.5〜4.5,电镀液温度的电镀条件下,将氯基Zn-Ni合金电镀组合物电镀在基础钢板上。温度为50至70℃,电流密度为40至200A / dm 2,电镀液和阴极的相对流速为1.0至2.5m / sec。 Zn-Ni合金电镀钢板的特征在于,其通过Zn-Ni合金电镀钢板的制备方法来制备。
展开▼