Our company’s aluminum wheel hub powder coating is a series of products specially designed for the characteristics of wheel hub bottom layer protection and surface glazing coating. It is a series of products with multiple varieties that are suitable for different requirements and coating characteristics. The product has excellent leveling, strong adhesion and good salt spray resistance.
Transparent powder
High transparency pure polyester transparent powder
Ordinary transparency pure polyester transparent powder
Base powder
High leveling pure polyester base powder
High leveling epoxy polyester mixed base powder
Our company’s aluminum wheel hub powder coating is a series of products specially designed for the characteristics of wheel hub bottom layer protection and surface glazing coating. It is a series of products specially designed for different requirements and coating characteristics.
Carton packaging, lined with two layers of polyvinyl chloride plastic bags, net weight of each box is 20kg. Non-hazardous items can be transported in various ways, but should be avoided from direct sunlight, moisture and heat, and contact with chemicals.
Operators should wear dust masks during use to avoid inhaling dust and minimize long-term contact between skin and powder coating. Paint attached to the skin can be washed with soap.
| Characteristics | The product has excellent leveling, strong adhesion and good salt spray resistance. |
| Specific gravity | 1.2~1.8g/cm’ (depending on the formula and color) |
| Particle size | Depending on the purpose, the standard type has an average particle size of 35~40 microns, less than 10 microns powder <10%, and greater than 100 microns powder <0.5%. |
| Storage stability | Powder coatings for aluminum wheels should be stored in a dry and ventilated room below 35°C, and avoid direct sunlight. If stored in an air-conditioned room, the powder must be stored at room temperature or the same (temperature) as the spraying equipment before use to avoid moisture. Under this condition, the powder can be stably stored for 12 months. If it is exceeded, it must be re-tested. If the result meets the requirements, it can still be used. |
Transparent powder
| Test items | Inspection standard or method | Inspection index |
| Appearance | Visual inspection | Various board surface effects |
| Impact | GB/T 1732 | ≥50Kg·cm |
| Bending | GB/T 6742 | ≤2mm |
| Cupping | GB/T 9753 | ≥6mm |
| Hardness | GB/T 6739 | ≥H |
| Adhesion | GB/T 9286 | Level 0 |
| Neutral salt spray resistance | GB/T 1771 | 800h; Scribed area: unidirectional rust ≤2.0mm; Unscribed area: no abnormality |
Base powder
| Test items | Inspection standard or method | Inspection index |
| Impact | GB/T 1732 | ≥50Kg·cm |
| Bending | GB/T 6742 | ≤2mm |
| Cupping | GB/T 9753 | ≥6mm |
| Hardness | GB/T 6739 | ≥H |
| Adhesion | GB/T 9286 | Level 0 |
| Neutral salt spray resistance | GB/T 1771 | 800h; Scribed area: unidirectional rust ≤2.0mm; Unscribed area: no abnormality |
| Curing conditions | Recommendation: acrylic transparent powder 180℃/10mins, pure polyester transparent powder 200℃/10mins or low temperature curing 180℃10mins, base powder 180℃/10mims. | |
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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