In electroplating production, correctly selecting a suitable power supply product is the foundation for improving work efficiency. There are three requirements for selecting an electroplating power supply
1. Compliance with Electroplating Process Specifications
- It is necessary to meet the process requirements such as the power rating of the power supply, waveform indicators, and the adjustable range of current and voltage.
- This covers aspects such as the rationality of the structure, safety, circuit characteristics, and cooling method.
- Price factors need to be comprehensively considered.
2. Reliability of the Power Supply
3. Cost - effectiveness
Volume Current Density Method
- Based on the maximum current allowed to pass through each liter of plating solution, adjust the current intensity of the plating tank to determine the power of the power supply. For example, for copper plating, it is generally 0.2 - 0.3A/L, and for nickel plating, it is 0.1 - 2.5A/L, etc. Taking bright nickel plating with 600L of plating solution as an example, the maximum process current is 0.3A/L × 600L = 180A, and a 200A power supply can be selected.
Unit Area Current Density Method
- Calculate the maximum current according to the plated area. For example, for chromium plating with 600L of plating solution, at 60°C, the maximum allowable current density is 100A/dm². If the plating tank is fully loaded and can plate 10dm², then the maximum output current of the required power supply is 100A/dm² × 10dm² = 1000A, and a 1000A, 18V rectifier power supply needs to be configured.
After determining the power of the power supply, it is also necessary to comprehensively consider factors such as the waveform, cooling method, volume, corrosion - resistance ability, and cost in combination with the electroplating process requirements and on - site conditions for the selection.