Special powder coating for wheel rims (steel rims), a series of epoxy polyester powder coatings specifically designed for the characteristics and requirements of the base coat and top coat for wheel rims.
--Strong adhesion
Coating characteristics
--Excellent leveling
--High breathability
-Good salt spray resistance
Suitable for automotive aluminum wheels and steel rims
Application parameters:
180℃~200℃ x 10~15 minutes
High-voltage electrostatic spraying 60~80KV
Recommended film thickness: 60~150 μm
| Item | Instrument | Criteria | Test Standard |
|---|---|---|---|
| Pencil Hardness | Pencil Hardness Tester | ≥1H | ASTM D3363. GB/T 6739 |
| Impact Resistance | Impact Tester | 50kg·cm (diameter 8mm) 2.5Nm (diameter 16mm) (diameter 20mm) ≤2mm (cylindrical mandrel) | ASTM D2794. ISO 6272. GB/T 6742 |
| Bend Resistance | Bend Tester | Conical mandrel bending Cylindrical mandrel | ASTM D1737. ISO 1519. GB/T 9286 |
| Adhesion | Cross-cut Tester | Class 0 | ISO 2409. ASTM D3359. GB/T 1771 |
| Salt Spray Resistance | NSS Salt Spray Tester | ≥1000H, Wb ≤2mm | ASTM B-117. ISO 7253 |
| Cupping Test | Cupping Tester | ≥6mm | ISO 1520. GB/T 9753 |
All tests were conducted using 0.8mm degreased and rust-removed cold-rolled steel sheets with a coating thickness of 60-80µm. Coating performance indicators may vary slightly depending on gloss level.
This product is free of arsenic, selenium, lead, hexavalent chromium, mercury, antimony, cadmium, and other heavy metals, and fully complies with RoHS 2.0 environmental requirements.
We provide complete powder coating consultation and application customization solutions based on each customer's actual needs. The test indicators mentioned in this report are data obtained from laboratory testing and are for reference only, not as a performance guarantee for product application. Results may vary depending on environmental factors and other conditions.
Powder coatings can be categorized by resin system (epoxy, polyester, hybrid, polyurethane), appearance (smooth, texture, hammer, metallic, pearlescent), or performance level (anti-corrosion, heat-resistant, UV-resistant, architectural grade, automotive grade).
Powder coatings offer thousands of colors in gloss, matte, satin, metallic, candy, texture, wrinkle, hammer tone, wood grain, fluorescent, and other custom effects. Special powders can create soft-touch, anti-scratch, anti-fingerprint, or anti-graffiti surfaces.
The process generally includes surface pretreatment (degreasing, phosphating, chromating, sandblasting), drying, electrostatic spraying, curing in an oven, and cooling. A well-controlled pretreatment and curing process ensures strong adhesion and long service life.
Powder coatings are environmentally friendly, solvent-free, and produce minimal waste. They offer excellent corrosion resistance, weather durability, mechanical strength, and uniform film appearance. The coating is tough, impact-resistant, scratch-resistant, and has a long lifespan.
Powder coatings are widely used in appliances, aluminum profiles, architectural components, automotive parts, bicycles, furniture, outdoor equipment, machinery, electrical cabinets, pipeline systems, and general industrial and consumer goods.
Powder coating is a dry finishing technology where finely ground powder is electrostatically sprayed onto a metal or non-metal surface and then cured at high temperature. After curing, the powder melts into a continuous, durable, and decorative coating layer.
Powder coating protects the substrate from corrosion, weathering, chemical attack, and mechanical wear. It also provides decorative appearance with rich colors, gloss levels, textures, and special effects.
In many industrial applications, powder coating outperforms liquid paint. It forms a thicker and tougher coating, resists corrosion and chemicals better, and does not contain VOCs. It also provides excellent consistency and cost-effective mass production.
It is called powder coating because the coating material is a solid powder instead of a liquid paint. The coating is formed by melting and curing powder particles under heat.
Powder coatings include several families depending on resin chemistry:
• Epoxy powders
• Polyester powders
• Epoxy-polyester hybrid powders
• Polyurethane powders
• Acrylic powders
• Fluorocarbon (PVDF) powders
Each type has its own performance features such as corrosion resistance, UV resistance, chemical resistance, outdoor durability, or decorative properties.
Powder coatings are based on thermoset or thermoplastic resins combined with pigments, curing agents, fillers, additives, and in some cases metallic or effect particles. Common substrates include steel, aluminum, galvanized metal, MDF, and certain heat-resistant plastics.
The lifespan depends on powder type, film thickness, application method, pretreatment, and service environment. Indoor coatings can last more than 10–20 years. High-grade outdoor polyester or fluorocarbon powders can last 15–25 years or longer under UV exposure.
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