Stop Using Your IR Lamps Just for Drying
Most shops treat infrared lamps like fancy hair dryers—they use them to dry paint and call it a day. Honestly? That’s a waste. If you’re dealing with old, stubborn coatings on aluminum skins or trying to pull out a small dent, you don’t need a gentle breeze. You need raw heat density. How it actually works To get old paint off without ruining the metal underneath, you have to hit what’s called the “glass transition temperature” fast. Shortwave IR doesn’t waste time heating up the air in the room. Instead, it dives straight into the coating and makes the molecules vibrate. This basically snaps the bond between the paint and the metal. We use high-wattage quartz halogen emitters because they hit the target temperature in seconds. It’s direct. It’s fast. The gear you actually need For aircraft work, I usually recommend shortwave lamps with a focused reflector. A standard 230V or 400V halogen tube gives you enough punch to soften those thick, multi-layer primers that usually take forever to remove. The trick is keeping the heat in the paint. You don’t want that heat soaking too deep into the aluminum, or you might mess with the metal’s temper. And please, use a precise PID controller. If you overshoot the temp, you’re looking at a warped panel, and that’s a headache nobody wants. The real-world trade-off Here is the best part: this setup can cut your stripping time by about 60% compared to those messy chemical strippers. Plus, your shop stays a lot cleaner. But keep in mind, shortwave IR is aggressive. If you leave the lamp in one spot for too long, you’ll burn right through the paint and start overheating the alloy. You’ve got to keep the lamp moving or use timed pulses. Tell your techs to keep a pyrometer handy to watch the surface temps. It’s the only way to make sure you aren’t pushing the heat too far.