http://pure-qz-ir-heat.com/en/tags/tempering/ Recent content in Tempering on Pure Quartz Infrared Heat Hugo en-us Mon, 20 Jul 2026 12:29:01 +0800 http://pure-qz-ir-heat.com/en/posts/infrared-heating-for-glass-tempering/ Mon, 20 Jul 2026 12:29:01 +0800 http://pure-qz-ir-heat.com/en/posts/infrared-heating-for-glass-tempering/ <p><img src="http://pure-qz-ir-heat.com/images/2bad5999f7b19d5c4829fec6cfc866a1.png" alt="Infrared heating for glass tempering"></p> <h1 id="how-to-stop-your-glassware-from-cracking-during-tempering">How to Stop Your Glassware from Cracking During Tempering</h1> <p>Getting the temperature ramps right in glassware production is a total balancing act. If you go too slow, you&rsquo;re just burning daylight and wasting cycle time. But if you crank the heat too fast? Everything cracks. It&rsquo;s a nightmare. That&rsquo;s why we lean on shortwave IR lamps for that &ldquo;instant tempering&rdquo; phase. They give us the control we actually need.</p> <h2 id="the-trick-to-beating-thermal-shock">The Trick to Beating Thermal Shock</h2> <p>The real enemy here is thermal shock. To stop it, you need a heat source that can pivot on a dime—something that can go from 100% power down to 20% in a fraction of a second. Shortwave IR lamps are pretty much the only tool for the job. Because they use a tungsten filament in a vacuum or halogen gas, they don&rsquo;t hold onto residual heat like those clunky resistive elements do. The second you cut the power, the heat stops. Period. We usually wire <a href="https://goldisgood.com">these</a> into an SCR or a fast-switching thyristor. This lets us tweak the power curve as we go. If a sensor picks up a temperature spike that looks like it might shatter the glass, the system just <a href="https://o-yate.net">drops</a> the wattage instantly. It&rsquo;s a lifesaver.</p>