Short wave infrared heating tube

Fri, 17 Jul 2026 02:36:27 +0800

Getting Low-E Preheating Right on Glass Over 3 Meters

If you’re working with wide-format Low-E glass, you know the struggle. You need the heat to be perfectly even across the whole sheet. But here’s the problem: most standard lamps just aren’t long enough. Once you hit that 3-meter mark, off-the-shelf gear usually fails, leaving you with annoying cold spots in your drying tunnels. That’s why we build custom short-wave infrared (SWIR) units. We basically bridge that gap so your glass is heated uniformly, edge to edge. The struggle with voltage When you stretch a heating tube past 3 meters, physics starts to fight you. A basic 220V circuit often can’t push enough power to keep the middle of the tube as hot as the ends. It’s a common headache. We fix this by tweaking the filament winding density and dialing in the voltage. The result? A flat thermal profile. No guessing games, just consistent heat across the entire width of the glass. Dealing with quartz and gravity Short-wave lamps use high-temp quartz, which is great for heat but tricky for length. At over 3 meters, these tubes can actually start to sag or even snap under their own weight. To stop that from happening, we use heavy-wall quartz and mounting clips that we’ve engineered to be precise. But there’s a trick to it: we don’t over-tighten them. These tubes need room to breathe and expand as they heat up. If they’re pinned too tight, they’ll crack the moment you ramp up the power. A few things to keep in mind These units put out a massive amount of heat—that’s how they preheat so fast. Just make sure your power cabinets can handle the initial surge of current when you flip the switch. And a heads-up: because these tubes run incredibly hot, your conveyor frame is going to feel it. You’ll want to double-check your shielding and cooling fans so your frame doesn’t warp from the ambient heat. The best way to set this up is with high-temp leads and a PID controller tuned specifically for the weight and size of the long-tube array. Once it’s dialed in, your preheating time drops and your surface temperature stays rock solid before the coating even starts.

Short on Warm IR Heater China Manufacturer

Short wave infrared heating tube

Getting Low-E Preheating Right on Glass Over 3 Meters