At present, the glass market has grown increasingly popular, and the detection of glass quality is usually important when purchasing a glass. For the inspection associated with glass sheets, the appearance quality is principally to check the flatness and observe the product quality defects such as bubbles, inclusions, scores, lines and fog attractions. If there is such a defective glass, deformation may occur during use, which reduces the transparency from the glass, mechanical strength and thermal stability of the glass, and is not well suited for engineering use. Since the glass is usually a transparent object, the appearance can be detected whilst selection, and the quality is often basically identified.

Inspecting cup processed products, in addition into the requirements of Laminated insulated glass, should also check the particular processing quality, check whether typical size, processing accuracy and pattern definition meet what's needed, and the side just isn't allowed to be defective.

The appearance quality with the hollow glass brick should not be cracked, and there must be no opaque unmelted material in the glass blank, and the welding and bonding between the 2 main glass bodies cannot end up being poor. Visual inspection from the brick body should be unencumbered with corrugations, bubbles and lamellar streaks resulting from inhomogeneities inside glass blank. The outer surface from the large surface of the glass brick need to be less than 1 mm, the convexity needs to be less than 2 mm, the weight should meet the product quality standard, no surface warpage, notch, burr and other excellent defects, the angle needs to be square. The above is a general method for identifying the caliber of glass. Special glass ought to be tested with special devices.

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