A series of products designed for rail transit internal and external parts.
Application:
Suitable for spraying of multi-structure interior and exterior parts of rail transit
Coating characteristics:
Excellent leveling
Excellent UV and salt spray resistance
Good easy-to-clean function
Application parameters:
Atomization air pressure: ~0.7bar
Primary air pressure: ~0.7bar
Recommended voltage: 40-90KV
Secondary rework:
Surface treatment: grinding + air cleaning
Recoating mode: Reduce spraying voltage
| Chemical type | External part: polyester type
Internal part: polyester epoxy mixed type |
| Appearance | External part: color depends on customer requirements
Internal part: mainly metallic silver and wood grain powder and white plane |
| Particle size | Depends on product type and color |
| Gloss | Depends on product |
| Specific gravity | 1.2-1.8g/CM’ (related to color) |
| Storage conditions | v30P sealed in a dry and cool place |
| Validity period | 12 months (v30°C) |
| Curing conditions (workpiece temperature) | 180*15 minutes, 200*10 minutes |
| Item | Instrument | Judgment standard | Test standard |
| Adhesion | Single-edged knife, tape | 0 crack | GB/T 9286
ISO 2409 |
| Impact resistance | Impact tester | 50 kg.cm (0 8mm )
2.5Nm (016mm) |
GB/T 1732
ASTM D 2794 ISO 6272 |
| Coating hardness | Hardness tester | *1H | GBZT6739 ASTM 03363 |
| Alkali resistance | 0.1N NaOH. Beaker | M48H, coating has no blistering, shedding, rust, or spots | GB/T9274 |
| Acid resistance | 0.1N acid, beaker | M24H, coating does not become mushy | GB/T9274 |
| Salt spray resistance | NSS fog box | *500H, rust and blister < 2mm | GB/T 1771 ASTMB-117 ISO 7253 |
| Humidity and heat resistance | Constant temperature and humidity box | a 500H, slight discoloration is allowed, no blistering, rust, or shedding | GB/T 1740 ISO 6270 |
| Weather resistance | Artificial accelerated aging box | OUV-B313500H M 3 level | GB” 1865 ISO 11341 |
| Water resistance | Steaming water | 20 cycles allow coarsening, but no blistering | GB/T1733 ASTM D 2247 |
| Flame retardancy | Third-party test | ISW35 | ASTM E162 |
| Third-party test | DS(1.5)W1OO DS(4.0)W165 | ASTME662 | |
| Third-party test | V0 grade | UL-94 |
• The above tests all use 0.8mm degreased and derusted cold-rolled steel plates, with a coating thickness of 60~80um. The performance indicators of the coating will vary slightly with different gloss.
Environmental requirements: This product does not contain heavy metals such as tin, selenium, lead, hexavalent tantalum, mercury, zinc, cadmium, etc., and fully complies with RoHS 2.0 environmental protection requirements.
Note: We will provide complete powder coating consultation and customized application solutions according to the actual needs of each customer. The test indicators mentioned in this report are the data obtained by laboratory testing and are for reference only, not as performance commitments for product applications. The results will vary with environmental factors and electrical stacking.
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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