After the preparation of aluminum alloy profiles on electroplating, 3090 aluminum profiles can be entered into the steps of electroplating on aluminum. No matter what kind of pre-treatment method is used, the first process after pre-treatment to electroplating is flash copper plating.

A: flash copper plating

At that time suitable for flash copper plating bath is mainly hydrogen cyanide copper plating professional skills.

After the flash copper plating is completed, it should be fully cleaned, and 50x50 aluminum profiles to carry out active treatment, active with 1% ~ 3% sulfuric acid solution, assuming that the electroplating after this is acid alkaline copper plating or nickel plating, after the activity without water cleaning can be immediately into the plating tank. Assume that it is alkaline plating solution, especially hydrogen cyanide plating solution, then 3d wood grain aluminum profile activity must be washed after 2 times before plating into the tank.

Two: central plating

Flash was carried out by copper plating behind for coating according to the definition of the products or the ability to carry out the center of the production and processing, electroplating coating also can say the trainee on center into bottom plating, flash copper plating in order to better access port only loose to and even the relay for a professional skill of coating, to reach the product to the provisions of the coating according to appearance of the coating to the center of the coating after all. Such as acid copper, dark nickel or other plating as a center or base coating or expertise. It is assumed that the surface coating is gold-plated, it is more necessary to be properly thickening the coating after the flash copper plating, such as the use of acid and alkaline bright copper plating, and must go through the flash gold plating (or organic chemical gold plating) before entering the surface of the plating. Among the general professional skills introduced in this chapter, skills such as copper and nickel plating can be used as central plating on aluminum plating.

Three: appearance coating

The outer coating is also the intended coating required by aluminum plating, which can be indoor decoration coating, but also functional coating. As far as photoelectric electroplating is concerned, aluminum electroplating is mostly functional coating, and a small amount of outer parts have both function and home decoration effect. The coating for pure interior decoration is limited to the handles, knobs and identification plates on the frame.

Analysis of three kinds of electroplating process of aluminum profile processing factory