News

Wire mesh, grating, and chain-link fence are among the hardest surfaces to powder coat evenly. Unlike solid metal parts, open mesh geometry causes powder to pass straight through the gaps — a problem known as blowback — while the Faraday cage effect leaves rear wire surfaces thin or uncoated. This guide covers why standard corona guns struggle on wire products, which technique adjustments actually help, and how rotary centrifugal atomization delivers measurably better coverage on mesh, grating, and fence without the powder waste.

Corona and tribo are the two dominant electrostatic powder coating technologies — and they perform very differently on complex geometry. Corona guns struggle with the Faraday cage effect on internal recesses, while tribo guns require special powder formulations. This guide breaks down exactly how each works, where each excels, and introduces a third technology that solves the limitations of both.

Choosing the right electrostatic powder coating gun makes the difference between clean coverage and costly rework. This guide covers atomization technology, handheld vs. fixed systems, and the key specs metal fabricators need to evaluate before buying.

Struggling with the Faraday cage effect in powder coating? Discover 3 proven strategies — voltage control, airflow management, and rotary atomization — to coat complex parts evenly.

Internal corners and recessed areas are the hardest spots to powder coat — caused by the Faraday cage effect. Learn why traditional spray guns fail and how the Q7 handheld electrostatic powder gun, powered by Air-Free Centrifugal Atomization, delivers complete coverage

The Faraday cage effect is the biggest unsolved problem in powder coating—leaving inside corners, recessed areas, and complex geometries with poor coverage. Learn what causes it, why traditional handheld guns can't solve it, and how the Paint Brothers Q7 is the world's first portable solution engineered to break through it.

QXD Coating attended the 2025 Shanghai International Surface Treatment Exhibition (CISTEC 2024), showcasing our latest powder coating solutions and connecting with industry partners from around the world.

Discover how the QXD-Q7 electrostatic powder coating machine delivers professional automotive                                                
   parts finishing with superior durability, coverage, and efficiency. 

In electrostatic powder coating, one of the most common technical challenges is the Faraday cage effect.
This problem often appears when coating deep corners, narrow recesses, grooves, edges, and complex metal structures, where powder is harder to deposit evenly.
For many powder coating factories, this leads to several production problems:

• uneven powder coverage
• thin coating in recessed areas
• excessive powder build-up on outer edges
• repeated touch-up work
• lower spraying efficiency
• increased powder waste