Tungsten filament quartz heater

Fri, 19 Jun 2026 03:30:33 +0800

On the glass line, heat control isn’t a nice-to-have. It’s the line between a flat, stress-free pane and a whole batch that ends up in the scrap bin. When you’re tempering, bending, or drying coatings, any drift in temperature uniformity shows up fast—optical distortion, uneven bow, or thermal stress fractures. We built the tungsten filament quartz heater to knock out that variability and keep the process repeatable, shift after shift. What matters under the hood Tungsten filament quartz heaters deliver short-wave infrared with snappy response and tight thermal control. In practice, you get a ramp rate up to 15°C/s, so the oven profile hits setpoint quickly after a changeover. Across the heated zone, temperature stays within ±2%, which keeps hot and cold spots from driving differential expansion in the glass. Power density is engineered at 20–60 W/cm², giving you enough heat flux to push the cycle without overshooting—protecting coatings and cutting energy waste. The quartz envelope handles thermal shock, and the compact footprint fits machines where convection heating just can’t keep pace. Glass processing lives and dies on time and temperature. In tempering, you need rapid, even heating to hit the quench window consistently. In bending, the mold and glass have to track the same thermal curve, or you end up with waviness. In lamination and coating drying, the heat has to be stable enough that you don’t scorch the polymer or interlayer. These heaters shorten heat-up, steady the thermal field, and cut rejects from uneven sag or stress marks. The payoff is higher throughput with fewer reworks, and lower kWh per square meter because the energy goes into the glass, not the surrounding air. Here are a few shop-floor details that matter. Because the element runs hot, clearance to nearby components is non-negotiable. Mounting and spacing have to respect airflow and radiant paths, or you’ll cook something locally. These heaters also perform best when matched to the load and the glass emissivity. Reflective coatings and low-emissivity surfaces change heat absorption, so tune the control strategy to your product mix. Give them clean power and proper shielding, and you’ll get long service life with predictable maintenance windows.

Filament on Global Warm IR Heating

Tungsten filament quartz heater