http://warm-ir-heater-online.com/en/tags/why/ Recent content in Why on Buy Warm IR Heaters Online Hugo en-us Fri, 24 Jul 2026 10:12:58 +0800 http://warm-ir-heater-online.com/en/posts/managing-thermal-stress-in-glass-annealing-via-global-voltage-standardization/ Fri, 24 Jul 2026 10:12:58 +0800 http://warm-ir-heater-online.com/en/posts/managing-thermal-stress-in-glass-annealing-via-global-voltage-standardization/ <p><img src="http://warm-ir-heater-online.com/images/0539f8d11cfcdd1efd2329f9dbab37bb.png" alt="Why glass cracks in annealing"></p> <h1 id="why-your-glass-is-cracking-and-how-to-stop-it">Why Your Glass is Cracking (and How to Stop It)</h1> <p>Ever had a piece of glass just snap for no apparent reason during annealing? It’s frustrating. Usually, it comes down to one thing: the glass is fighting itself. When the outside cools down way faster than the middle, or one section of your oven gets a sudden spike in heat while the rest lags behind, you get these internal stresses. Once that tension hits a breaking point—<em>snap</em>.</p>