Glass annealing lehr lamp

Tue, 21 Jul 2026 02:40:07 +0800

Getting Wide-Format Low-E Glass Heating Right

If you’re preheating wide-format Low-E glass, you know the struggle. You need the heat to be perfectly even across the whole sheet. But once you cross that 3-meter mark, standard lamps just stop working. You start seeing cold spots, and that’s when your coating fails to bond. It’s a nightmare. That’s why we build custom, continuous infrared units. No gaps, no guesswork.

The headache of 3m+ units

Scaling a lamp up to over 3 meters isn’t as simple as just making it longer. You run into voltage drops and thermal expansion that can wreck your equipment. We push the wattage density high to keep that surface temperature steady. But here’s the catch: a tube that long wants to bow or even snap under its own weight. To stop that, we use reinforced quartz. And a quick tip on your power supply—keep it balanced. If the current isn’t distributed evenly across that 3-meter stretch, you’ll get hotspots. And hotspots lead to burnouts. Fast.

Electric glass lehr heating

Thu, 16 Jul 2026 01:43:31 +0800

Stop Your Glassware From Shattering During Tempering

If you’ve ever seen a batch of glassware shatter during tempering, you know that sinking feeling. It usually comes down to one thing: thermal shock. To keep that from happening, you need a temperature ramp that’s smooth and precise. That’s why we use shortwave infrared (IR) lamps in our electric lehrs. It’s all about controlling exactly how much heat hits the glass surface the moment it enters the “instant tempering” phase.

Lehr on Warm IR Heater China Manufacturer

Glass annealing lehr lamp

Getting Wide-Format Low-E Glass Heating Right

The headache of 3m+ units

Electric glass lehr heating

Stop Your Glassware From Shattering During Tempering