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After the toughening process, any other process such as cutting, drilling, printing and edge-working can not be applied to glass. The final size of the glass must be determined before the toughening process. |
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In certain production techniques, spontaneous breakage may occur due to microscopic particulates. Although this is a rare situation, heat soaking test can also be applied to toughened glass to eliminate the risk of spontaneous breakage. |
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- Cutting:
It is the process of cutting glass in a quadrangular or a specific shape according to customers' requirements and specifications.
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- Edge working:
- Seamed edge: Grinding of glass edges by a 45° slope.
- C edge: Grinding of glass sides and edges like a C shape. Both polished and mat C edging can be applied.
- Flat edge: Grinding of glass sides and edges with a 90° and a 45° slopes. Both polished and mat flat edging can be applied.
Edge Working Types
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- Printing:
- Silk screen printing: It is a printing technique using by serigraphy and enamel paint which penetrates to the glass surface after the toughening process. Silk screen printing creates a sharp-edged image.
- Roller printing: It is a printing technique by using a roller and enamel paint which penetrates to the glass surface after the toughening process.
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- Drilling:
It is the process of drilling holes on glass in the required dimension.
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- Toughening:
Toughening process involves heating and cooling of glass panels on a horizontal line to induce compression stress to the outer surfaces of glass where the core assumes a compensating tension. This process improves the glass strength against impact and thermal stress loads. Toughened glass is a safety glass which is approximately five times stronger than annealed glass and if broken, it shatters into small blunt edged fragments, thus minimizing risk of injury.
Glass should be processed according to its application area and customer requirements and then should be toughened. After the toughening process, it is not possible to apply any other process on the glass.
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