http://cozy-ir-heat.com/en/tags/why/ Recent content in Why on Cozy Home Infrared Heat Hugo en-us Sun, 19 Jul 2026 18:24:15 +0800 http://cozy-ir-heat.com/en/posts/why-glass-cracks-in-annealing/ Sun, 19 Jul 2026 18:24:15 +0800 http://cozy-ir-heat.com/en/posts/why-glass-cracks-in-annealing/ <p><img src="http://cozy-ir-heat.com/images/05f46fc64d24437ec99c838e4d66f914.png" alt="Why glass cracks in annealing"></p> <h1 id="why-your-glass-is-cracking-during-annealing">Why Your Glass is Cracking During Annealing</h1> <p>Ever wonder why your glass just snaps during annealing? It usually comes down to a fight between the surface and the core. If the outside gets way hotter than the inside, the material hits a breaking point. In an annealing lehr, this happens when your IR heating <a href="https://o-yate.com">profile</a> is a mess. You get these &ldquo;hot spots&rdquo; where the glass expands too quickly in one area. Then, as soon as it cools down unevenly—<em>snap</em>. There goes your yield.</p>