Glassware annealing heater

Thu, 04 Jun 2026 02:14:29 +0800

Out on the annealing line, a heater that lags or runs uneven doesn’t just cost you time—it loads the glass with thermal stress that shows up as micro-cracks, optical distortion, and whole batches that get scrapped. We built this annealing heater for the way the line actually behaves, where repeatability and response time translate straight into yield.

What actually matters under the hood

It leans on short-wave quartz infrared elements to put the heat right into the glass, fast, with far less dependence on convection. Start-up is quick: the quartz tube hits 650°C from ambient in 12 seconds. Across the active heating zone, we hold temperature uniformity within ±3°C, so the whole lehr section gets consistent heat without cold spots. Power density is tuned to 35 W/cm² to match typical annealing profiles without overshoot, and the heater holds steady output cycle after cycle.

Glassware on Smart Warm IR Heaters

Glassware annealing heater

What actually matters under the hood