Stop Obsessing Over Wattage (And Start Thinking About Power Density)
When people come to us for custom infrared tubes for glass R&D, they usually start the conversation with length and wattage. I get it. Those are the numbers on the spec sheet. But if you’re working with new glass formulations, focusing only on total power is a trap. What actually matters is how that heat is spread across the tube.
Getting the Heat Exactly Where You Need It
We don’t just chop tubes to a certain length and call it a day. That’s too simple. Instead, we play around with the tungsten filament winding and the quartz thickness to build a specific “heat map.” Think about it this way: if your glass sample needs a blast of heat in the center that gently fades out toward the edges, we adjust the winding pitch to match that exact curve. It stops those annoying “hot spots” from popping up—the kind that cause thermal shock or mess up the crystallization of your experimental glass.
The Nitty-Gritty of Long-Life Tubes
We use high-purity quartz because, frankly, the last thing you want is a tube that warps when things get hot. To make these things last, we focus on the halogen cycle. It’s basically the way tungsten redeposits on the filament. By tuning the gas pressure inside the tube, we keep the filament from burning out way too early. One quick tip: keep an eye on your footprint. If you jam high wattage into a short tube, the heat flux spikes. If you’re going with a high-density setup,**make sure your housing is vented.**If the air isn’t moving, the ends of the tube will overheat and the seals will just give up.
R&D Should Be Flexible
Most off-the-shelf lamps force you to change your entire process just to fit the tool you bought. That’s backwards. We do it the other way around. You tell us the temperature gradient you need for your material, and we map the wattage to hit those numbers. It means you can spend your time testing new glass compositions without worrying if your heater is holding you back. We handle the math and the parameters. You just run the experiment.