Uniform annealing infrared system

Mon, 20 Jul 2026 11:53:52 +0800

Getting Rid of Cold Spots in Your Glass Tunnel Kilns

Most infrared lamps top out at about a meter. If you’re running a glass tunnel kiln, that’s a problem. Why? Because those gaps between the lamps create cold spots. You end up with uneven annealing and internal stress in the glass, which is the last thing you want. We figured out a better way. We build custom heating units that stretch past 2 meters, giving you a continuous line of heat.

Uniform heating for tempered glass

Thu, 18 Jun 2026 05:09:07 +0800

On the tempering line, the furnace doesn’t lie. If the thermal field is off even a little, you’ll see bow, warp, and edge stress that comes back as spontaneous breakage after shipment. More power isn’t the answer. Control is. We build the heating module around medium-wave infrared quartz emitters, tuned to the absorption band of glass. That gives you fast, volumetric heating with low thermal inertia, so the surface doesn’t overshoot while the core is still catching up. Each lamp runs at a defined power density and voltage, sized to match common busbar and connector layouts. Emitter geometry and spacing are laid out to keep the thermal profile uniform across the width of the glass, so you don’t get hot and cold bands. Emissivity holds steady through the service window, and the response time is fast enough to support tight closed-loop control. Tempering comes down to a repeatable heat-soak. With this module, you hit setpoint faster and you get tighter temperature uniformity, which means consistent compression and fewer optical defects. You also save energy because the heat goes into the glass, not into soaking the furnace structure. The lamps are packaged as drop-in assemblies for major glass machinery brands, so you can replace the heating section without reworking the line or rewriting the control strategy. Installation is straightforward, but alignment is where people get tripped up. The lamp array has to be parallel to the glass plane, and you have to keep clearance to the reflectors to avoid localized hot spots. Expect a slightly higher peak current during warm-up—size your supply and contactors accordingly. We provide adapter plates and wiring maps for common OEM footprints, and we spell out the operating envelope to keep the quartz hot zone within safe limits.

Uniform on IR Glass Heating Technology

Uniform annealing infrared system

Getting Rid of Cold Spots in Your Glass Tunnel Kilns

Uniform heating for tempered glass