Electrophoretic coating is a process that uses the action of an electric field to deposit charged coating particles onto the surface of a workpiece, which is divided into anodic electrophoresis (AED) and cathodic electrophoresis (CED, currently more widely used). For small batch sheet metal orders, their core characteristics, costs, and effects can be analyzed from the following dimensions:

3、 Suggested scenarios for small batch orders

  1. Prioritize electrophoretic scenes:

Outdoor sheet metal parts with extremely high anti-corrosion requirements (such as outdoor cabinets, brackets, agricultural equipment);

Complex shaped conductive metal parts (such as sheet metal structures with grooves and welds, which need to be avoided from being missed);

Appearance parts that require high uniformity of coating (such as home appliance casings and automotive parts).

  1. It is not recommended to choose electrophoresis scenes:

Ultra small orders with a batch size of less than 50 pieces (high cost per piece, low cost-effectiveness);

Multi material mixed orders (requiring process splitting to increase costs);

Orders with extremely short delivery cycles (within 3 days) (electrophoresis cycle 5-10 days).

4、 Cost optimization suggestions for small batch orders

  1. Merge orders: Merge multiple small batch orders to reduce production line switching and debugging costs.
  2. Simplify the process: choose a monochrome coating and standard thickness (such as 60-80 microns for cathodic electrophoresis) to reduce the number of tank liquid adjustments.
  3. Choose third-party services: entrust professional electrophoresis factories (such as automotive and home appliance supporting factories) to undertake OEM, share equipment costs, and reduce self investment.
  4. Confirm requirements in advance: clarify pre-treatment requirements (such as phosphating and passivation), coating thickness, color standards, and avoid rework.

summary

The core advantages of electrophoresis technology are uniformity, corrosion resistance, and environmental friendliness, making it suitable for small batch orders of conductive metal parts with high performance requirements; However, the high equipment investment, long cycle, and limited applicability to conductive substrates are the main obstacles that limit its small-scale popularization. If small batch orders have extremely high requirements for anti-corrosion and uniformity, electrophoresis can be given priority; If cost and cycle are more important, powder coating or electroplating are better choices.