Train window glass annealing

Mon, 27 Jul 2026 10:49:42 +0800

Getting Infrared Heating Right for Wide-Format Low-E Glass

Preheating Low-E glass for train windows is a bit of a headache. You need a very specific thermal profile, and if you’re working with widths over 3 meters, standard lamps just don’t cut it. You end up with cold spots that mess up the whole batch. We handle this by building custom, continuous infrared units. The goal is simple: make sure every single inch of that glass hits the same temperature.

The struggle with 3-meter spans

Here’s the thing about scaling up to 3 meters: voltage drop is a nightmare. If you aren’t careful, the ends of your lamps run cooler than the middle, and suddenly your heat density is all over the place. To fix this, we obsess over the wattage and voltage specs. We use high-wattage quartz tubes that can take the heat without bowing or burning out. You’ve got to keep your power supply balanced across those long runs, otherwise, you’ll deal with flickering and weird heating zones that are a pain to calibrate.

Train on Maximum Infrared Heating

Train window glass annealing

Getting Infrared Heating Right for Wide-Format Low-E Glass

The struggle with 3-meter spans