Safety distance for glass heating

Sat, 18 Jul 2026 05:25:14 +0800

Why we insist on checking your heating distance in person

Buying a lamp based on a spec sheet is basically gambling. We see it all the time. Someone orders a high-output shortwave lamp, hooks it up, and within an hour—crack. The glass is shattered. Most people think they got a bad lamp, but that’s rarely the case. The real culprit is usually the safety distance. Here’s the thing: glass hates uneven heat. When an infrared emitter is too close to what you’re heating, it creates a “hot spot.” It’s just a concentrated blast of energy in one tiny zone. While the center of the glass is expanding rapidly from the heat, the edges are staying cool. That tension builds up until the material just gives way. A few millimeters. That’s all it takes to move from a smooth operation to a pile of broken glass. That’s why we come to you to look at the actual gap. But you can’t just push the lamp way back to be safe. If you move it too far, you start losing energy to the air. Your cycle times start dragging, and suddenly your production slows down. Then comes the temptation to crank up the voltage to make up for the distance. Don’t do that. It just fries the filament and kills the lamp’s lifespan. We’re looking for the sweet spot. We balance how much power the lamp puts out against how the glass actually reacts to the heat. It’s a bit of a tug-of-war between speed and safety. Sure, you can shove the lamps closer to get things heating faster. Your throughput goes up, but so does the chance of a disaster. We aren’t just selling you a tube of glass; we’re making sure your yield doesn’t tank. If we find out your machine’s frame doesn’t have enough room for a safe gap, we don’t just tell you “too bad.” We’ll look at changing the lamp coating or tweaking the pulse frequency to keep the heat under control.

Safety on Quartz IR Factory Direct

Safety distance for glass heating

Why we insist on checking your heating distance in person