In powder coating lines, when something doesn’t work as it should, the first move is usually adjusting the obvious variables: powder parameters, gun settings, oven conditions.
But often, the problem is simpler.
It’s the hooks.
Compromised grounding = unstable process
Hooks are the electrical contact between the part and the system. When they’re clean, grounding works and coating is stable. When they load up with paint, they create an insulating layer. The electrostatic field weakens, coverage becomes uneven, film thickness varies.
The result? More rework, more process instability, more time wasted looking in the wrong places.
As paint buildup reaches 1/16–1/8 inch, grounding efficiency drops significantly. At that point, you’re dealing with:
- Uneven powder deposition
- Thin or bare spots
- Poor adhesion after curing
- Inconsistent thickness
These defects usually get blamed on powder quality, gun settings, or cure conditions. The real issue is often just insufficient electrical contact at the hanging point.
Process performance goes beyond the equipment
If you deal with powder coating lines, you know that field performance depends on factors beyond the core equipment itself. Grounding is one of them.
A system can be perfectly engineered and maintained, but if hooks get dirty and grounding degrades, the issue still reflects back on the line. And it gets perceived as a system limitation.
That’s why hook cleaning is that enhancement that completely changes the process and final quality. And there’s the right solution for each productivity level:
- In-line systems that clean hooks and racks directly in the production flow using chemical stripping. Just need a bit of space between your unloading and loading stations.
- Immersion tanks for scheduled batch cleaning of your racks and hanging systems with paint stripping. Tanks can be custom-sized for your setup
Either way, you go from risking coating performance to removing one of the main reasons for doing the job twice.
See you at FABTECH 2026
You can contact us here below, or discuss it in person at:
FABTECH Mexico (Mexico City)
May 12-14, 2026 | Booth #234 | Centro Banamex
FABTECH USA (Las Vegas)
October 21-23, 2026 | Booth #S15057 | Las Vegas Convention Center
If you’re evaluating how to keep coating performance stable over time, paint stripping it’s a good place to start the conversation 🤝
