Dealing with Tight Spaces in Glass Bending Furnaces
Ever tried to cram a standard infrared lamp into a furnace that just wasn’t built for it? It’s a nightmare. You end up with these annoying cold spots or heat that’s all over the place, and suddenly your glass sheets aren’t bending the way they should. The problem is that off-the-shelf tubes don’t care about your specific chassis. We fix that by building lamps that actually fit your rail layout—down to the millimeter. Getting the dimensions right When we say “custom,” we aren’t just talking about chopping a tube to length. That’s the easy part. The real trick is where we place the heating element inside the quartz. If you’re tight on space but need a ton of heat, we can put a high-wattage element into a shorter tube. It concentrates the energy. You get all the power you need to get that glass moving, but you aren’t melting your furnace walls in the process. The nitty-gritty on materials We stick with high-purity quartz because it can take the beating of rapid heating and cooling without cracking. For preheating, short-wave infrared is usually the way to go since it sinks into the glass faster. But if your specific type of glass keeps reflecting the energy back, we can coat the lamps to shift the spectrum. It just works better. One quick heads-up: keep an eye on your wiring. Custom, high-density lamps pull a lot of current. If you’re shoving 2kW into a tiny 300mm tube, your cables and connectors need to be beefy. If they aren’t rated for that kind of heat soak, you’ll be replacing burnt-out terminals in a week. Getting it up and running These are designed to be drop-in replacements. We match the length and curve of your bending jig so there are no gaps. Those little gaps are usually where stress fractures start, so getting rid of them is a huge win. Once they’re in, just double-check your PID controllers. Since the wattage might be different than what you had before, you’ll want to tune them so you don’t accidentally overshoot your temperature.