Common metal surface treatment processes:

Common metal surface treatment processes:

The surface treatment of metal materials such as stainless steel plate, aluminum alloy, die cast aluminum, zinc alloy, and other metal materials is introduced in detail in this article: Dalian Metal Surface Treatment

1、 Anodic oxidation

The entire process of anodizing aluminum or aluminum alloy products by placing them in the pH of the solution to conduct insertion electrolysis, and using the effect of electrolysis to produce aluminum trioxide (Al2O3) plastic films on their surfaces is called the anodizing solution for aluminum and aluminum alloy. After anodic oxidation, many aluminum surfaces can be formed μ M -- dozens μ M of air oxide film. Compared to the air oxidation film of aluminum alloy, its corrosion resistance, wear resistance, and decorative art are significantly improved and improved.

Production process:

Solid color, color gradient:

Polishing/sandblasting/metal wire drawing → degreasing → anodizing → centering → coloring → hole sealing → air drying

Two colors:

① Polishing/sandblasting/metal wire drawing → degreasing → masking → anodizing 1 → anodizing 2 → sealing holes → air drying

② Polishing/sandblasting/metal wire drawing → degreasing → anodizing 1 → laser marking → anodizing 2 → hole sealing → air drying

Generally, the cost of dichroism is much higher, requiring masking and air oxidation twice, resulting in a relatively high rejection rate.

2、 Principles of Electrophoresis

Used with stainless steel plates, aluminum alloys, etc., it can display various colors of the product, maintain a metallic texture, and improve surface characteristics, with good anti-corrosion properties.

Production process:

Pre solution → Electrophoresis principle → Air drying

Advantages:

1. Rich and colorful colors;

2. Without metallic luster, it can cooperate with sandblasting, polishing, metal wire drawing, etc;

3. Production and processing in a liquid natural environment can complete the surface solution of complex structures;

4. The processing technology is complete and can be produced in batches.

3、 Electroplating process

The process of using electrolysis to make the surface of metal materials adhere to a layer of ceramic film, which has the advantages of avoiding erosion, improving wear resistance, electrical conductivity, reflective properties, and improving aesthetics.

Production process:

Pre solution → Cyanide free alkali copper → Cyanide free white copper tin → Ceramic film plating