Wine glass annealing heater

Wed, 01 Jul 2026 14:01:09 +0800

On a thin-walled stemware line, the annealing zone is where you win or lose yield. If the thermal field isn’t stable, residual stress sticks around—and the next handling step can snap the glass. We built this wine glass annealing heater around a quartz short-wave element because it throws heat exactly where you need it, fast, with tight control. That’s what the lehr needs: knock out thermal stress without over-soaking the ware. The core is a quartz infrared heater, 240/380 V, sized to match standard annealing lanes. It responds quickly and packs high power density, so the temperature profile settles fast after a changeover. **Uniformity across the hot zone is the whole point.**Consistent emissivity and even radiant flux keep hot spots from showing up at the glass. That means no uneven expansion, no stress concentrations. In practice, you see fewer rejects from stress cracks, and the annealing curve repeats shift after shift. This heater earns its keep because it matches the realities of the floor. It pulls the lehr back to setpoint fast, cutting warm-up time and locking in the annealing schedule for steady strain relief. Energy use drops because the heat goes straight where it’s needed, not lost to heavy convection. On high-throughput lines, that rapid recovery keeps pitch tight and output steady. And the module is built as a direct replacement for standard OEM zones, so you can swap it in without tearing up the lehr layout. Installation is straightforward, but the details matter. Mounting faces need to be clean and flat so the radiant surface stays aligned, and the electrical connections have to match the existing terminal block and clearance. The unit runs best when the lehr atmosphere is controlled and the reflectors stay clean—soot or oxidation will shift the effective temperature at the glass. Keep it within the rated temperature window, and the quartz element holds output over long campaigns, keeping the annealing profile stable even when ambient conditions drift.

Wine on Smart Infrared Heating Systems

Wine glass annealing heater