Surface treatment coating method for cr material

The present invention worn around the plating solution preparing step of preparing dogeumaekreul containing relates to a method for surface treatment plating CR material, zinc (Zn) content 8kg to about 10kg, nickel (Ni) content of 1.5kg to 2.0kg; Subsequently the material preparation stage; Degreasing step; Stage acid treatment; A first washing with water; China; Zinc-nickel plating treatment; A second washing with water; Process inspection; Ultrasonic washing with water; The third washing with water; Activation; Black chromate treatment; The fourth washing with water; A first dewatering drying; Coating; Second dehydration drying; Step drying furnace; And finished goods inspection step and the packaging step; is for the surface treatment plating method for CR material that contains.