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How to choose electroplating power supply correctly


In the process of electroplating production, the correct choice of a power supply product that suits you is the basis for improving work efficiency. The following are the requirements for selecting electroplating power sources organized by the editor.

There are three requirements for choosing a plating power supply:

First, it must meet the specifications required by the electroplating process, including the power size of the power supply, the waveform index, and the adjustable range of current and voltage values.

The second is the reliable performance of the power supply itself, which mainly refers to the rationality of the structure, safety, circuit characteristics, and cooling methods.

Third, consider the cost-effectiveness of its price.

Determining how big and what kind of power supply a plating species and all plating tanks should be configured is the most important task for the implementation of electroplating production. In actual production, there are two methods to determine the electroplating power supply: one is the volume current density method that is determined according to the volume of the plating solution; the other is the current density method per unit area that is calculated according to the plating area.

How to choose electroplating power supply correctly

The so-called volume current density is to adjust the current intensity of the entire plating tank according to the maximum current allowed by the plating solution per liter, so as to determine the maximum and conventional output power of the power supply to be used. Copper plating is generally 0.2~0.3A/L, nickel plating is 0.1~2.5A/L, bright nickel plating is 0.3~0.35A/L, acid zinc plating is 0.5~0.6A/L, alkaline zinc plating can reach 1.2 A/L, chrome plating is 2~3A/L. Taking bright nickel plating as an example, the maximum process current of a 600L plating solution can reach 0.3A/L×600L=180A, so a 200A power supply can be used.

The maximum current can also be calculated according to the plating area. Taking chromium plating as an example, if it is a 600L plating solution, at 60℃, the maximum allowable current density is 100A/dm2, and the plating tank can be plated with 10dm2 when the plating tank is fully loaded, then the maximum output current of the power supply required is 100A/dm2×10dm2 =1000A, that is, to configure a 1000A, 18V rectifier power supply.

After determining the power size of the power supply. According to the needs of the electroplating process and the conditions of the electroplating site, the waveform, cooling method, size, and corrosion resistance of the electroplating power supply should be selected, including the cost factor to balance.

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