What Is Brush Plating?

Brush plating is also referred to as plating or slotless plating. Its principle and essence belong to the model of electroplating process in electrochemical processing. In contrast to electrolysis, the process of using metal ions in the plating solution to deposit on the cathode under the action of an electric field.

Brush plating is also referred to as plating or slotless plating. Its principle and essence belong to the model of electroplating process in electrochemical processing. In contrast to electrolysis, the process of using metal ions in a plating solution to deposit on the cathode under the action of an electric field ^[1]

A method of selective plating using an electrode or brush connected to the anode and capable of providing the electrolyte required for electroplating, moving on the part serving as the cathode ^[1]

1.International leading technology, realizing high current and high

Surface finishing of parts Tooling setup before plating Electric cleaning treatment Activation treatment Brush plating Post-plating treatment.

1. Surface finishing. The thickness of the brush plating layer is generally 0.5mm, and there is no processing or a little processing after plating. Therefore, the parts to be plated should be processed before plating to achieve shape and position accuracy and surface roughness requirements in order to obtain a uniform coating. There are oil holes and keyways on the surface, which can be plugged with bakelite and wood.

2. Setting of brush plating tooling. When continuous and uniform brush plating, the workpiece is generally clamped on the machine tool, the plating pen is clamped firmly, and the speed of the machine tool is adjusted to meet the requirements of the brush plating speed. Adjust the power supply to meet the amount of current required for brush plating. Prepare a special plating pen for each type of plating solution required. Prepare surface treatment materials and other auxiliary tools according to actual needs.

3. Electric net treatment. A thin oil film will remain on the surface after cleaning with general solvents. Use the electric liquid to apply electricity to brush with a plating pen to dissociate the residual oil film on the surface and achieve the purpose of degreasing by emulsification or saponification. After the surface is flushed with water, the water film is evenly spread and no dry spots are required to meet the requirements.

4. Surface activation treatment. Dip the activation liquid with a special plating pen, and brush the surface of the part under the electrified state, and remove the oxide film through the electrochemical reaction and the mechanical peeling of the generated bubbles until the surface appears fresh and the original metal color and no spots.

5. Brush the transition layer. After the [wiki] Chemical [/ wiki] sequence, the transition layer is immediately brush-plated, and the special brush-plated pen is connected to the positive electrode, and the plating solution is preferably preheated to 50 ° C.

6. Brush plating working layer. The working layer is determined according to the working conditions of the part. Select the combined coating according to the part coating thickness. The predetermined plating thickness is stored in a counter. Select the voltage and relative motion speed according to the plating solution used. The bath is preheated to 50 ° C. Start the power supply and start brushing the working layer. Because the thickness of the coating is automatically controlled, when the predetermined thickness is reached, an audible and visual signal alarm is issued.

7. Post-plating treatment. After plating the parts, rinse the surface residue with water. If mechanical processing is not required, remove burrs, trim corners, and perform anti-rust treatment, and the brush plating work is completed ^[1] .