Electrophoretic Lacquer Deposition (EP): 30um Clear Protection Over Brushed Brass
Engineering Overview: Process breakdown of cathodic electrophoretic clear lacquer deposition on brushed brass lock cylinders, guaranteeing uniform 30um coverage.
Technical & Engineering Specifications
| Hardness | 4H Pencil Scratch Resistance |
|---|---|
| Salt Spray | ASTM B117 > 240 Hours |
| Coating Method | Cathodic Electrophoretic Clear Deposition (E-Coat) |
| Film Thickness | 25 to 35 um 100% Uniform Envelope |
| Optical Clarity | High-Gloss or Satin Matte Transparency |
Cathodic Electro-Coating Science
Traditional spray lacquer leaves thin edges where tarnish begins. Cathodic Electrophoretic Deposition (E-Coat / EP Lacquer) applies lacquer electrochemically.
100% Edge Coverage
- Immersion Electro-Deposition: Water-borne polyurethane particles carry a positive charge and are drawn uniformly to every surface and chamfer at 50–100V.
- Baking & Hardness: Cured at 165°C for 25 minutes, producing an ultra-clear 30 μm coating with 4H pencil hardness and 240h salt spray resistance.
Frequently Asked Engineering & Selection Questions
Q1: What is the advantage of electrophoretic lacquer (E-coat) on brass locks?
It uses electrical voltage to coat 100% of edges and recesses with uniform clear acrylic, preventing tarnish on sharp corners.