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Offer Details
| Offer Type: |
 |
| Offer Category: |
Construction & Decoration >
Building Glass
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| Offer Post Time: |
2008-07-23 |
| Expiration Date: |
2009-05-05 |
| Details: |
In the production of flat glass the molten silica-based mix is cooled slowly under carefully controlled conditions. This annealing procedure removes undesirable stresses from the glass. Cooling occurs in an annealing "lehr"; hence, the glass is termed "annealed" or "ordinary" glass. Annealed glass which has been heated to a temperature near its softening point and forced to cool rapidly under carefully controlled conditions is described as "heat-treated glass." The heat treating process produces highly desirable conditions of induced stress which result in additional strength, resistance to thermal stress, and impact resistance. |
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