Why we build extra-long infrared heaters for glass coating
Most infrared lamps top out at about a meter. That sounds fine until you’re running a long glass coating tunnel. When you string together a dozen short lamps, you end up with these annoying “cold spots” at every single joint. It’s a headache. That’s why we make custom heating units that stretch past 2 meters. The power struggle You can’t just stretch a piece of quartz glass and call it a day. If you do, you’ll run into voltage drop. Basically, the power fades as it travels, and you get a lamp that’s hot at the ends but lukewarm in the middle. That’s a disaster for your coating. You’ll see streaks or patches that just didn’t cure. To fix this, we tweak the voltage and use parallel circuiting. It keeps the heat density steady from the first inch to the last. No surprises, just a solid, even bake. Getting the layout right We design these for a continuous flow. By getting rid of those constant gaps between lamps, you get way more heat hitting the glass. But here’s the tricky part: heat makes things grow. A 2-meter tube expands quite a bit when it gets glowing hot. If you bolt it down too tight, the tube will just snap. We use heavy-duty quartz and special mounting brackets that let the glass “breathe” while it works. The trade-offs Look, nothing is perfect. Pumping that much heat over a 2-meter stretch puts a real load on your electrical panel. You’ll want to make sure your wiring is beefy enough to handle the current without getting too hot itself. Also, let’s be honest: swapping out a 2-meter tube is more of a chore than popping in a small 500mm lamp. To make it easier, we add reinforced end-caps so you don’t accidentally break something during the swap. The upside? You have way fewer connectors and wires cluttering up your tunnel. Fewer joints mean fewer things to break. You just get a consistent curtain of heat that dries your coating fast and gets the job done.