How to choose the model of rectifier for plating
Author: Robby
The following key factors need to be considered when selecting a rectifier model for electroplating:
1. Plating process requirements
Current Requirement: Calculate the required current based on the plating bath size and surface area of the workpiece. Typical current densities are 0.5-10 A/dm², depending on the process.
Voltage requirement: The resistance of the plating bath and the pole spacing determines the voltage, which is usually between 2-12V and may be higher for special processes.
2. Rectifier types
Silicon rectifier: suitable for general plating, low cost but average efficiency.
High frequency switching power supply: high efficiency, small size, precise control, suitable for precision plating.
Thyristor rectifier: suitable for high current, high stability requirements.
3. Output characteristics
Constant voltage/constant current: choose constant voltage or constant current output or both according to the process.
Precision of voltage and current stabilisation: high-precision power supply is suitable for precision plating, ordinary plating requirements can be relaxed.
4. Control mode
Manual control: simple adjustment of voltage and current, suitable for small-scale production.
Automatic control: controlled by PLC or computer, suitable for large-scale or automatic production.
5. Cooling method
Air-cooled: suitable for small and medium power, low cost but noisy.
Water-cooled: suitable for high power, good cooling effect but high cost.
6. Environmental adaptability
Anti-corrosion performance: electroplating workshop is highly corrosive, the rectifier needs to have good anti-corrosion ability.
Protection level: according to the workshop environment to choose the appropriate level of protection (such as IP54, IP65).
7. Brand and after-sales service
Brand selection: choose a famous brand, quality is guaranteed.
After-sales service: consider the manufacturer's after-sales support to ensure easy maintenance and repair of equipment.
8. Budget
Under the premise of meeting process requirements, choose cost-effective equipment.
9. Safety and certification
Ensure that the equipment meets the relevant safety standards, such as CE, UL, etc.
10. Expandability
Consider the future production expansion needs, choose an expandable model.
Summary
When choosing a rectifier for electroplating, it is necessary to comprehensively consider the process requirements, output characteristics, control mode, cooling mode, environmental adaptability, brand, budget, safety certification and scalability, etc. to ensure that the equipment meets the production requirements and has a high cost-effective.