Electrophoretic Paint
What is Electrophoretic Paint?
Electrophoretic Paint, also known as E-coating, is an advanced painting technology that uses electrical current to deposit paint particles onto metal surfaces. This process creates a uniform, corrosion-resistant coating with excellent adhesion properties.
Key Features of Our Electrophoretic Paint
- Superior corrosion resistance exceeding 1,000 hours salt spray test
- Uniform coating thickness ranging from 15-25 microns
- Excellent edge coverage for complex geometries
- Environmentally friendly water-based formulation
- High throwing power for complete surface coverage
Technical Specifications
| Parameter | Specification |
|---|---|
| Solid Content | 18-22% |
| pH Value | 5.8-6.5 |
| Baking Temperature | 160-180°C (320-356°F) |
| Baking Time | 20-30 minutes |
| Film Hardness | ≥3H (Pencil Hardness) |
Electrophoretic Paint Application Areas
Our Electrophoretic Paint is widely used in:
- Automotive components and chassis
- Appliance manufacturing
- Industrial machinery parts
- Architectural metalwork
- Agricultural equipment
Electrophoretic Paint FAQ
What is the recommended voltage for Electrophoretic Paint application?
The optimal voltage for Electrophoretic Paint typically ranges between 150-250 volts DC, depending on the specific formulation and desired film thickness. Lower voltages (150-200V) are used for thin films, while higher voltages (200-250V) are applied for thicker coatings. The exact voltage should be determined through process testing with the specific part geometry and paint formulation.
How does Electrophoretic Paint compare to traditional spray painting?
Electrophoretic Paint offers several advantages over conventional spray painting: (1) It provides more uniform coverage, especially on complex geometries and recessed areas; (2) The process achieves higher transfer efficiency (typically 90-95% vs 30-70% for spray painting); (3) It creates superior corrosion protection due to complete surface coverage; (4) The coating thickness is more precisely controlled. However, the initial equipment investment is typically higher for electrophoretic systems.
Quality Control Parameters
| Test Method | Standard | Requirement |
|---|---|---|
| Adhesion Test | ASTM D3359 | 5B (No removal) |
| Impact Resistance | ASTM D2794 | ≥50 in-lbs |
| Salt Spray Resistance | ASTM B117 | ≥1000 hours |
| Gloss Measurement | ASTM D523 | 60° gloss: 70-90 |
Can Electrophoretic Paint be applied over different metal substrates?
Yes, Electrophoretic Paint can be applied to various metal substrates including steel, galvanized steel, aluminum, and zinc alloys. However, the pretreatment process may vary depending on the substrate. For steel and cast iron, a zinc or iron phosphate conversion coating is typically recommended. Aluminum surfaces usually require a chromate or zirconium-based pretreatment. It's essential to conduct substrate-specific testing to ensure optimal adhesion and performance.
Process Flow for Electrophoretic Paint Application
- Degreasing and cleaning
- Surface pretreatment (phosphating or other conversion coating)
- Rinsing with deionized water
- Electrophoretic Paint application (immersion and electrification)
- Post-rinsing
- Baking and curing
Color Options Available
Our Electrophoretic Paint is available in several standard colors:
- Black (most common for industrial applications)
- Gray (various shades available)
- White (for specific aesthetic requirements)
- Custom colors (available upon request)
Storage and Handling Guidelines
| Aspect | Requirement |
|---|---|
| Storage Temperature | 5-30°C (41-86°F) |
| Storage Life | 6 months in sealed containers |
| Agitation | Continuous mild agitation required in bath |
| Filtration | 25-50 micron filters recommended |
Environmental Advantages
Electrophoretic Paint offers significant environmental benefits compared to conventional painting methods:
- Water-based formulation with low VOC content
- High transfer efficiency minimizes paint waste
- Closed-loop rinsing systems reduce water consumption
- Excess paint can be recycled back into the system