http://warm-ir-heater-zone.com/en/tags/cracks/ Recent content in Cracks on Warm IR Heating Zones Hugo en-us Sat, 25 Jul 2026 03:05:30 +0800 http://warm-ir-heater-zone.com/en/posts/balancing-pattern-clarity-and-glass-strength-in-integrated-infrared-annealing/ Sat, 25 Jul 2026 03:05:30 +0800 http://warm-ir-heater-zone.com/en/posts/balancing-pattern-clarity-and-glass-strength-in-integrated-infrared-annealing/ <p><img src="http://warm-ir-heater-zone.com/images/b5656277f58cb00419575fab5c447582.png" alt="Why glass cracks in annealing"></p> <h1 id="the-tug-of-war-screen-printing-and-glass-annealing">The Tug-of-War: <a href="https://goldisgood.com">Screen</a> Printing and Glass Annealing</h1> <p>If you’ve ever tried to combine screen printing and tempering into one smooth run, you know it’s basically a constant fight. You&rsquo;re stuck between a rock and a hard place: you want the ink to stick, but you don&rsquo;t want the glass to shatter. Heat it too fast?<strong>Crack.</strong> Heat it too slow? Your ink blurs or just won&rsquo;t cure.</p> <h2 id="why-it-cracks">Why it cracks</h2> <p>It all comes down to the &ldquo;thermal gradient.&rdquo; Think of it like this: those IR lamps hit the surface of the glass instantly, but the core stays cold. That difference creates tension. Now, add ink into the mix. Ink and glass don&rsquo;t expand at the same rate when they get hot. If your lamps dump too much energy too quickly, the ink starts pulling away from the glass. In the worst cases, it actually triggers a stress fracture. Not a great look.</p>