Precautions for silver electroplating process

The first step to pay attention to is the pretreatment of the substrate. This is very important, but sometimes it may be overlooked.

The adhesion, conductivity, flatness, and presence of residues on the surface of the electroplating substrate are all considerations. Many people often overlook this, resulting in extremely poor electroplating effects.

Take the more common copper electroplating as an example. Copper is a very good base material for silver electroplating, but you also need to pay attention to whether the copper surface is feasible, such as whether it is oxidized, whether there are oil stains remaining, and some stains are even impossible to naked eyes. aware.

If it is severely oxidized, it can be activated first. If there are residual stains, it is necessary to perform cleaning pretreatment first, and then electroplating after cleaning, otherwise it will cause unstable plating and discoloration.

The above is about the preparation of the substrate before electroplating. The second thing to pay attention to is the problem of additives. All kinds of additives in the electroplating bath must be supplemented in time, otherwise it will cause the failure of electroplating or other problems. Therefore, it is necessary to record the situation of each process step during operation and make supplementary additions in time.

The last thing to do is to control the size and duration of the current during silver plating. The speed and thickness of the silver plating layer are determined by these two factors, but the larger the solution, the better, for example, if the current is too large , It will lead to discoloration of the coating, which is not worth the loss. As for the thickness, the electroplating time needs to be set according to the demand.

These need to go through many verifications and comparisons, and finally find the parameters for silver electroplating quickly and well.

There are three main points about silver plating. The principle of silver plating is actually very simple. Whether it is traditional cyanide silver plating or the new non-cyanide silver plating, the basic process is the same.