Because China’s "dual-carbon" policy is making progress and people want better eco-friendly coating, powder spraying equipment is slowly replacing traditional solvent-based coating equipment. It has features like "zero VOC emissions and high coating utilization rate".In 2024, the domestic market size of powder spraying equipment was over 21 billion yuan. It grew by 32% compared to last year. Its in-depth application in the automotive, home appliance, building materials, and hardware sectors not only addresses the "high pollution and high energy consumption" pain points of traditional coating but also increases product added value through high-quality coatings.
Automotive components have strict requirements for coating weather resistance and adhesion. So powder spraying equipment becomes their preferred choice:
For chassis components (like control arms, drive shafts), we use electrostatic powder coating machines. These machines have automatic reciprocating coating systems. The coating thickness is controlled at 60-80μm. Its adhesion meets Grade 0 of the GB/T 9286 standard (no peeling). It can stand salt spray testing for more than 1000 hours. For comparison, traditional coating can only stand 600 hours.
For appearance parts such as door frames and wheel hubs, intelligent color difference control systems are paired, resulting in a coating color difference ΔE ≤ 0.8 and a qualification rate of 99.2%.
Data from an automaker shows that after introducing powder coating lines, the energy consumption for component coating decreased by 40%, and annual VOC emissions were reduced by 120 tons.
Home appliance casings (refrigerators, washing machines, outdoor air conditioner units) need coating that’s “highly efficient and has a uniform texture”—and powder spraying equipment can do this:
Fully automatic powder coating production lines include all steps of pre-treatment, coating, and curing. Each line can produce 5,000 pieces a day. For comparison, traditional coating lines only make 3,000 pieces a day. So efficiency goes up by 67%.
For cold-rolled steel sheets commonly used in home appliances, epoxy-polyester powder coatings are adopted. The coating hardness reaches 2H (pencil hardness test), and scratch resistance is increased by 50%. Users report that "home appliance casings show no obvious scratches after 3 years of use."
In addition, the equipment’s powder recovery rate exceeds 95% (vs. only 60% coating utilization rate for traditional coating), saving over 800,000 yuan in raw material costs annually.
Outdoor building materials like aluminum profiles, guardrails, and solar brackets need powder spraying equipment for long-term protection:
For aluminum profiles, we use high-temperature curing powder coating machines (curing temperature: 180-200℃). The coating can stand UV aging testing for 2000 hours (no chalking or discoloration), so it can handle severe cold in northern China (-30℃ without cracking) and high-temperature, high-humidity environments in southern China.
For solar bracket coating, we choose anti-corrosion powder. This coating can stand salt spray testing for 1500 hours. So the service life of the brackets goes up to 15 years. For comparison, traditional coating only lets brackets last 8 years.
After application by a building materials enterprise, the after-sales maintenance rate of outdoor products dropped from 12% to 3%.
Small hardware parts such as door handles, fasteners, and tool accessories require powder spraying equipment for "precise + mass" coating:
Electrostatic spray guns (equipped with small rotating worktables) enable 360° dead-angle-free coating for small parts with a size ≤ 5cm, with a coating uniformity deviation ≤ 5μm.
For stainless steel materials, special primer powder is paired to solve the "coating peeling" problem, with adhesion meeting Grade 1 standard.
Data from a hardware factory shows that after the equipment was put into production, the defect rate of small parts dropped from 8% to 1.5%, and the production cycle was shortened by 30%.
| Application Sector | Core Application Components | Equipment Type Used | Core Advantages | Key Performance Indicators |
|---|---|---|---|---|
| Automotive Manufacturing | Chassis components, door frames | Electrostatic powder coating machines (automatic reciprocating) | High adhesion, salt spray resistance | Adhesion Grade 0, salt spray resistance 1000h |
| Home Appliance Production | Refrigerator/washing machine casings | Fully automatic powder coating production lines | High-efficiency mass production, scratch resistance | Daily capacity 5, 000 pieces, hardness 2H |
| Building Materials Processing | Aluminum profiles, solar brackets | High-temperature curing powder coating machines | Weather resistance, corrosion resistance | Aging resistance 2000h, salt spray resistance 1500h |
| Hardware Accessories | Door handles, fasteners | Electrostatic spray guns (rotating worktables) | Precise dead-angle-free coating | Uniformity deviation ≤5μm, defect rate 1.5% |
Currently, powder spraying equipment is evolving toward "intelligence + low energy consumption":
Equipment equipped with AI temperature control systems can adjust curing temperature in real time (reducing energy consumption by an additional 15%).
Spray guns with automatic color change function (color change time reduced from 30 minutes to 5 minutes) adapt to multi-variety production.
In 2024, sales of such intelligent equipment grew by 65% year-on-year. As core equipment for eco-friendly coating, the expansion of its application will continue to drive the manufacturing industry toward "low carbon and high quality."
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