Thermal stress glass cutting

Mon, 08 Jun 2026 05:38:03 +0800

On the glass line, when the score line fails to cleanly turn into a fracture, the plant pays—plain and simple. Thermal stress cutting falls apart when the heat profile is uneven: too much in one spot, not enough in another. You end up with micro-cracks that show up later, or breakage that stops the whole line. We built our heating modules to nail that problem by giving you repeatable thermal control right where the cut happens. What matters under the hood We run short-wave infrared (SWIR) emitters in a compact quartz assembly, tuned for glass emissivity. Each zone puts out 2–4 kW and responds fast, so you can match the thermal impulse to the glass thickness and the coating stack. A uniform thermal field across the cutting zone smooths out the gradients that drive stress. And it drops into existing frames—standard busbars, standard mounting footprint—without reworking the machine. The heating has to fit the process, not fight it. In tempering, the preheat has to be even so you don’t warp before the quench. In bending, the zone needs to hit the glass quickly and hold the curve without hot spots. For EVA/SGP/PVB lamination, the cure profile has to be stable enough to drive out entrapments without overheating the interlayer. For insulating glass sealing, consistent heat at the primary seal keeps adhesion even and keeps moisture out. The modules deliver that repeatability—cycle time comes down, scrap drops, and energy draw stays predictable. Here’s what you’ll run into on the floor. Coatings and low-emissivity layers reflect heat differently, so the first setup needs you to map emissivity and tune power density. Clear glass runs cooler than coated glass at the same settings. Run a short qualification, then lock the recipe. And keep the emitter surface clean—inspect connections quarterly. In a dusty plant, even a thin film on the quartz will shift the output.

Thermal on Primary IR Heating Source

Thermal stress glass cutting