why annealing is done in glass manufacture
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To relieve stresses, which can lead to breakage at room temperature, it is necessary to cool glass in a controlled manner through a predetermined temperature gradient. This allows the surface and interior to cool uniformly. This controlled process for coolingglass to relieve interior stresses is called "annealing."
Adwaith11:
they will heat the class right but what about the inner portion of class
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