Copper busbarThe surface layer is meant to reduce "contact resistance." Any two conductors connected will have "contact resistance" on the contact surfaces in addition to their respective resistances,Contact resistance is related to the smoothness of the contact surface, the contact area, and the material itself. Plating the contact surface with tin takes full advantage of the softness of tin—under appropriate pressureIncrease the contact area, while also being resistant to rust and corrosion.

The busbar uses a hanging tin-plating method, with at least one anode plate and one cathode plate installed in the groove, the anode plate is connected to the positive terminal of the power supply, and the cathodeThe plates are electrically connected to the copper busbar through several spreaders and are partially or collectively placed in the plating bath electroplating solution by the spreaders, and plated on the surface of the copper busbarA layer of tin plating is applied to prevent oxidation. However, in the electroplating process of the electromagnetic wire, the contact points where the copper busbar is hung by the fixture and connected to the power supply are fixed.The current density around the electrical connection contact points decreases as the distance from the fixed contact decreases, resulting in uneven plating on the surface of the copper busbar,The surface is uneven, and moreover, as the time of electrical connection of the copper bus increases, the surface temperature of the copper bus electrical connection points rises sharply, the copper bus electrical connectionThe higher the contact temperature, the lower the current density on its surface, which will lead to a decrease in plating efficiency; in this process, the plating tank is in an open state, and during copper busbar plating, inside the tankThe plating solution volatilizes when heated, and the acidic mist waste gas generated during electroplating cannot be sealed or collected for treatment. The waste gas cannot be sealed, the acidic mist spreads throughout the space, the working environment is poor, and it seriously affects the environment.Acid fog can harm your health.

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