Stop Your Powder Coated Parts From Sticking
Ever deal with “blocking”? It’s a nightmare. You stack your parts, and because the surface is still a bit tacky, they bond together. By the time you realize it, you’re peeling parts apart and ruining a perfectly good finish. That’s where twin-tube shortwave IR lamps come in. They basically blast the surface with high-intensity heat to get that “second-level” dry—a quick flash-off—before the parts ever touch each other or the conveyor. Why two tubes instead of one? If you use a single tube, you usually end up with cold spots. Not ideal. We use a twin-tube setup because it doubles the heat hitting the target area. The best part is that this shortwave energy doesn’t waste time warming up the air in the room. It goes straight through the powder layer. In a few seconds, the skin of the coating starts cross-linking and hardens up. It’s fast. Really fast. A few things to keep in mind These lamps pull a lot of power to make sure the metal actually gets hot. Because of that, you’ll want to double-check that your electrical panels can handle the peak current. And here is a pro tip:**keep your reflectors clean.**If they get oxidized or covered in powder overshoot, your efficiency tanks and the lamps can overheat. A little bit of cleaning goes a long way. Forget the convection oven Standard ovens take forever to dry a surface. That waiting game is exactly why blocking happens. IR lamps just skip the middleman. They heat the metal and the powder directly. By the time the part leaves the IR zone, the surface is hard enough to resist sticking. Simple as that. You can slot these into your current line as a pre-heat stage or use them for a final flash-off. Just keep an eye on your timing. If you bake the surface too quickly, the powder won’t have time to flow out smoothly, and you’ll end up with that annoying “orange peel” texture. Get the timing right, and you’re golden.