http://pure-ir-heater.com/en/tags/lehr/ Recent content in Lehr on Pure Infrared Heating Systems Hugo en-us Sat, 25 Jul 2026 03:08:52 +0800 http://pure-ir-heater.com/en/posts/solving-glass-batch-variability-through-high-consistency-infrared-heating-lamps/ Sat, 25 Jul 2026 03:08:52 +0800 http://pure-ir-heater.com/en/posts/solving-glass-batch-variability-through-high-consistency-infrared-heating-lamps/ <p><img src="http://pure-ir-heater.com/images/2bad5999f7b19d5c4829fec6cfc866a1.png" alt="Glass annealing lehr lamp"></p> <h1 id="stop-chasing-your-tail-with-batch-variance-in-glass-annealing">Stop Chasing Your Tail with Batch Variance in Glass Annealing</h1> <p>Ever feel like you&rsquo;re <a href="https://o-yate.net">fighting</a> your annealing lehrs? You’ve got your settings dialed in, but suddenly a batch comes out with weird internal stress or warping. It’s frustrating. You start tweaking the controls, but the problem keeps jumping around. Usually, the culprit isn&rsquo;t your settings. It’s &ldquo;lamp drift.&rdquo; Here&rsquo;s the thing: if your heating lamps aren&rsquo;t putting out the exact same amount of heat—across every zone and every single replacement bulb—your temperature profile is a lie.</p>