Getting Glass Annealing Right
If you’ve ever had a piece of glass crack or warp right at the finish line, you know how frustrating it is. It usually comes down to the cooldown. You need that temperature to drop exactly right to get rid of the internal stress. That’s why we don’t just make “heaters.” We build infrared lamps tuned for specific thermal profiles. They’re designed to do one job: keep your glass stable. The Power Side of Things Here is the thing about heat flux. Sure, a high-wattage tube gets you to temperature faster. But it’s a heavy lift for your power supply. If you’re running a 400V system, you get a lot of punch in a small space. But be careful. We see it all the time—clients fry their circuits because they forgot about the initial surge when the lamps cold-start. Just make sure your transformers can handle that first big hit. Quartz and Heat We use high-purity quartz for the envelopes. Why? Because it can take the shock of rapid heating and cooling without snapping. The filament is the real secret, though. It’s calibrated for short-wave infrared. Instead of just warming up the air in the room, the heat actually sinks into the glass. We also offer coated versions that bounce the heat back toward your work. It saves energy and, more importantly, keeps your lab from feeling like a sauna. The Fit We stick with standard R7s or Sk15 connectors, so these should slide right into most lab setups. But the fit has to be perfect. We keep the tolerances tight because if the lamp is even slightly loose in the reflector, you get hotspots. And hotspots are the enemy of a uniform anneal. The Trade-off High-density heating is great, but it comes with a catch. That kind of intensity eventually eats away at your reflectors. You’ll want to check your alignment every few months to make sure the heat is still hitting where it should. We don’t just toss a bulb in a box and ship it; we’ll actually help you map out your thermal zone. We want to make sure your lamp does its job without accidentally cooking your housing.