| 摘要 |
The present invention, in a normal plating method comprising: a degreasing step (S20); a washing step (A); a pickling step (S30); a washing step (B); an electrolytic degreasing step (S40); a washing step (C); a plating step (S50); a washing step (D); a chromate step (S60); a washing step (E); and a top coating step (S70), relates to a wastewater reducing type plating method characterized by replacing processes from the pickling step (S30) to the washing step (C) with a shot process (S100). The wastewater reducing type plating method according to this adopts the shot process providing the same effects with effects of the pickling and electrolytic degreasing steps of a plating process and the effect of the washing step after the picking and electrolytic degreasing steps for the plating process, thus the washing and electrolytic degreasing steps and the washing step after the pickling and electrolytic degreasing steps can be omitted. Accordingly, the wastewater reducing type plating method is capable of reducing water used for the amount of water necessary for the washing step, thereby reducing wastewater. In addition, an effect of reducing expenses for treating the wastewater is expectable. |
