| 摘要 |
PURPOSE:To reduce the occurrence of plating defects during the production of a zinc alloy electroplated steel sheet by carrying out brushing in a pickling stage. CONSTITUTION:When the surfaces of a steel sheet are cleaned by pickling and electroplated with a zinc alloy, brushing is carried out with an acid-resistant brush during the pickling. It is preferable that the brush contains abrasive grains. Slightly soluble rust and inclusions which exist on the surfaces of the steel sheet are mechanically removed by the brushing, and at the same time, the surfaces are activated. Accordingly, the occurrence of plating defects is reduced during the electroplating, thereby improving the quality of plating. |
