Tempered glass stress removal

Sat, 27 Jun 2026 06:15:37 +0800

On the tempering line, residual stress doesn’t come with a warning label. You see it later as edge cracks after cutting, optical distortion after coating, or a spontaneous fracture during handling. That’s why the stress-removal zone isn’t a warm-up—it’s a controlled thermal operation that has to be repeatable. If the heating profile drifts, scrap and rework are how the line collects its bill. What matters technically We run quartz short-wave infrared heating modules because they respond fast and dump energy straight into the glass, not through heavy convection. That gives a stable thermal field across the surface, which is exactly what you need when you’re trying to relax localized stress without writing new thermal gradients into the sheet. Power is matched to line speed and thickness, with density tuned so you hit even temperature inside the required soak window. The quartz envelope takes the thermal shock of repeated start-stop cycles, and the heater geometry can be built to match your existing opening and mount pattern. Why it works here is simple: stress removal is about precision, not brute heat. With uniform heating, you cut down on edge failures after secondary processing, get more predictable flatness, and see less shift-to-shift variability. The fast ramp-up supports higher throughput without forcing you to extend furnace dwell, and direct radiant transfer keeps energy use tied to production, not idle losses. In practice, that translates to fewer rejects from hidden stress and more consistent behavior downstream—whether you’re bending, laminating (EVA/SGP/PVB), or assembling insulating glass. A few things to keep straight. Quartz short-wave heating is sensitive to shadowing, so make sure the module covers the full load width. Double-check that shields and edge guides aren’t blocking the radiant path. There’s also a short warm-up stabilization period after power-on—plan it into your startup routine instead of chasing it on the fly. For retrofits, confirm voltage, terminal layout, and clearances against adjacent components so you don’t bake in hot spots or create contact risks.

Removal on Infrared Heat Wave Solutions

Tempered glass stress removal