Most electrical equipment manufacturers today face rising expectations: better insulation, corrosion resistance, and a more professional surface finish. That’s why many factories — from circuit box producers to switchgear manufacturers — are switching from wet paint to powder coating.
Yantai Clear helps electrical product factories build powder coating lines tailored to their production volume, part size, and safety requirements — without overinvesting in oversized or unsuitable systems.
Why Powder Coating Is Ideal for Electrical Equipment
Electrical components — such as enclosures, cable trays, switch cabinets, or metal junction boxes — are often installed in environments where:
Moisture or condensation is present
Electromagnetic shielding is required
Clean, scratch-resistant surfaces are expected
Safety regulations require non-toxic coatings
Powder coating offers clear advantages over wet paint:
Benefit Why It Matters
Thicker Insulation Layer Helps improve electrical resistance
No VOCs or Solvents Better for sensitive or indoor installations
Harder Finish Protects surfaces during transport and installation
Color Stability Maintains brand appearance over time
Common Challenges We Help Clients Solve
1. Coating Small and Medium-Sized Parts in Batches
Solution: Multi-hanger jigs on a closed-loop conveyor allow dozens of boxes per cycle.
2. Avoiding Sharp Edge Breakdowns
Solution: We advise on proper pre-treatment (phosphate or zirconium), and powder types that flow well around edges.
3. Maintaining Clean Room Conditions
Solution: Use sealed booth inlets and positive pressure air curtains for clean powder environments.
4. Dealing with Multiple SKUs (Sizes/Types)
Solution: Modular hangers + adjustable hooks for fast switching between models.
Typical Layout for an Electrical Equipment Line
Zone Design Detail
Pretreatment 3-stage chemical cleaning or manual tank system
Drying Oven Electric hot air, 10–15 mins depending on part volume
Spray Booth Cartridge filter system, 2–3 automatic guns + manual zone
Curing Oven Electric or gas; 200°C for 20–22 mins
Cooling & Unloading Forced air fan or ambient zone
✅ This layout suits factories producing 50–500 units per day.
Real Project: Control Box Manufacturer in Vietnam
The customer wanted a clean, quiet line suitable for office-proximate operation. Yantai Clear provided:
Enclosed silent booth (noise <70 dB)
Energy-efficient curing oven with 3 thermal zones
Multi-product loading jigs (12 control boxes per frame)
Conveyor speed of 1.8 m/min to match production pace
Result? Reject rate dropped below 2%, and production doubled in under 3 months.
Best Powder Types for Electrical Equipment
Application Zone Powder Type
Indoor installations Epoxy-polyester hybrid (smooth finish)
Outdoor panels Polyester (UV-resistant)
High voltage areas Epoxy (strong insulation, indoor only)
🔍 Ask us for UL, ROHS, or REACH-compliant powder options from global suppliers.
FAQ
Q1: Do I need a large booth for electrical boxes?
A: Not necessarily. A mid-size booth with multi-gun setup is more efficient for batch coating.
Q2: Is powder coating electrically insulating?
A: Yes. Most powders are non-conductive and provide surface insulation up to 500–600V/mil.
Q3: How to ensure uniform thickness on all cabinet walls?
A: Use rotating hangers and adjust KV settings on your spray guns. Manual pass-through may still be needed for complex boxes.
