Copper foil tin plating widely used in electronics, hardware, handicraft processing, machinery, food, and home furnishings

In the industrial production and processing process, in order to enhance the welding performance and aesthetic decoration performance of copper parts, tin plating is often applied to the surface of copper parts. At present,Tin plating on the surface of copper foilCraftsmanship is widely used in industries such as electronics, hardware, handicraft processing, machinery, food, and home furnishings, including copper and copper alloy workpieces such as purple copper, brass, beryllium copper, etc.
What method is used for tin plating on the surface of copper foil in industry?

At present, there are two methods for tin plating on the surface of copper foil: copper foil electroplating process and copper foil chemical tin plating process. The principle is to use chemical or electrochemical methods to deposit a layer of metallic tin on the surface of copper foil, which is used to isolate the air and protect the copper material from external corrosion.

At the same time, the tin plating layer on the surface of the copper foil improves the welding performance and decorative performance of the workpiece.Chemical tin plating on copper foilCompared to electroplating tin on copper foil, the process has many advantages. For example, the operation of copper foil chemical tin plating is simple, soaking is sufficient. The copper tin plating process does not require heating, electricity, or specialized equipment, only a few corrosion-resistant PP tanks are needed for operation.

Taking the latest copper foil chemical tin plating solution as an example:

In general, the copper foil chemical tin plating process includes processes such as oil removal, chemical polishing, copper chemical tin plating, alkali neutralization, and tin protection.

First, clean the oil stains and oxide scales on the surface of the copper foil and copper alloy workpieces to be processed, and rinse them with water. Then perform chemical polishing treatment on the surface of the cleaned copper foil and copper alloy workpiece. After polishing is completed, rinse it with water. Then, the polished copper and copper alloy workpieces are subjected to chemical tin plating treatment.

We need to note that,Chemical tin plating on copper foilLiquid slotting does not require mixing with water, the original solution can be used. The temperature range for using copper foil chemical tin plating solution is between 20 degrees Celsius and 60 degrees Celsius, and it is recommended to use it at room temperature. The processing time for electroless tin plating on copper foil is between 15 seconds and 120 seconds, and the time should not be too short. After chemical tin plating treatment, copper workpieces also need to undergo tin protection treatment to further improve the corrosion resistance of copper tin plated workpieces.