http://precision-ir-heater.com/en/tags/lehr/ Recent content in Lehr on Precision Infrared Heating Hugo en-us Fri, 24 Jul 2026 09:33:22 +0800 http://precision-ir-heater.com/en/posts/preventing-thermal-shock-in-glassware-production-via-rapid-response-infrared-heating/ Fri, 24 Jul 2026 09:33:22 +0800 http://precision-ir-heater.com/en/posts/preventing-thermal-shock-in-glassware-production-via-rapid-response-infrared-heating/ <p><img src="http://precision-ir-heater.com/images/05f46fc64d24437ec99c838e4d66f914.png" alt="Glass annealing lehr lamp"></p> <h1 id="dealing-with-thermal-shock-in-glass-annealing">Dealing with Thermal Shock in Glass Annealing</h1> <p>If you&rsquo;ve ever run glassware through an annealing lehr, you know the nightmare: that sudden <em>ping</em> sound of a piece cracking. Thermal shock is the enemy here. If the temperature jumps too fast, the glass just gives up. To stop that from happening, we rely on shortwave infrared lamps. Why? Because they let us tweak the power almost instantly.</p> <h2 id="the-need-for-speed">The Need for Speed</h2> <p>When you&rsquo;re trying to protect a piece of glass, you can&rsquo;t afford to wait around for a heating element to &ldquo;warm up.&rdquo; That&rsquo;s why we use quartz halogen lamps. Old-school <a href="https://o-yate.com">resistive</a> heaters have this annoying lag—they take forever to react. But these lamps? They hit full power in milliseconds. It means as your glass moves from one zone to the next, you can ramp the heat up or down on the fly. It’s fast. Really fast. And that&rsquo;s what keeps your yield high. Plus, we pack a lot of power into a small space. This gives us the punch needed to get heat deep into thick-walled vessels without needing a massive, energy-sucking oven.</p>