Glass jewelry annealing lamp

Fri, 10 Jul 2026 02:40:02 +0800

Why we use Shortwave IR for annealing glass jewelry

If you’ve ever worked with glass jewelry, you know the stress—literally. You have to get the temperature exactly right to get rid of those internal stresses, but if you mess up, the whole piece can just shatter from thermal shock. For a long time, the go-to was using traditional ovens. But let’s be honest: ovens are a bottleneck. They’re slow. They’re clunky. We decided to ditch the batch process and go with shortwave infrared (SWIR) lamps. It turns the whole thing into a smooth, continuous line. The secret is in the speed Here is the thing about Shortwave IR: it doesn’t waste time heating up the air around the glass. It hits the material directly. It’s fast. Really fast. We’re talking seconds to hit the target temperature. When you’re running a conveyor belt, you can’t just sit around waiting for a heating element to warm up. With SWIR, you can tweak the power instantly. Whether you’re working with a thin sliver of glass or a chunky piece of jewelry, you can dial in the heat profile to match. Packing a punch in a small space To make this work in a tight setup, we use lamps with high power density. Basically, we’re shoving a lot of wattage into a short tube to create a concentrated heat zone. But there’s a catch. Because these lamps work so hard, they put a lot of pressure on the reflectors. If your reflectors get dirty or pitted, you’re throwing away a huge chunk of your heat. You’ve got to keep those optics spotless, or your temperature gradient just falls apart. Keeping things moving The best part? No more cooling things down just to heat them back up again. Your pieces go straight from forming into the annealing zone. It just flows. And since the lamps respond so quickly to voltage changes, you don’t have to stop the line when you switch from tiny beads to larger pendants. You just adjust the heat on the fly. A simple PID controller and a solid-state relay handle the cycling, and you’re good to go.

Jewelry on Quartz Heater Technology Core

Glass jewelry annealing lamp

Why we use Shortwave IR for annealing glass jewelry