Removing powder coating from aluminum requires care because aluminum is softer and more chemically sensitive than steel.
* Common Removal Methods
1. Chemical Stripping
Uses specialized paint and powder coating removers.
The stripping chemical softens and lifts the cured powder coating.
After stripping, the surface is rinsed thoroughly and cleaned.
Preferred when preserving the aluminum surface finish is important.
2. Thermal Removal (Burn-Off Ovens)
The coated aluminum is heated to break down the powder coating.
Remaining ash is removed by brushing or light blasting.
Temperature must be carefully controlled to avoid damaging or warping the aluminum.
3. Media Blasting
Uses non-aggressive media such as plastic beads, walnut shells, glass beads, or fine aluminum oxide.
Removes coating mechanically.
Excessive blasting pressure can damage the aluminum surface, so process control is important.
