At present, the glass market is becoming increasingly popular, and the detection of glass quality is also important when purchasing glass. For the inspection of glass sheets, the appearance quality is mainly to check the flatness and observe the quality defects such as bubbles, inclusions, scratches, lines and fog spots. If there is such a defective glass, deformation will occur during use, which reduces the transparency of the glass, mechanical strength and thermal stability of the glass, and is not suitable for engineering use. Since the glass is a transparent object, the appearance can be detected at the time of selection, and the quality can be basically identified.
Inspecting glass processed products, in addition to the requirements of flat glass, should also check the processing quality, check whether the standard size, processing accuracy and pattern definition meet the requirements, and the side is not allowed to be defective.
The appearance quality of the hollow glass brick should not be cracked, and there should be no opaque unmelted material in the glass blank, and the welding and bonding between the two glass bodies cannot be poor. Visual inspection of the brick body should be free of corrugations, bubbles and lamellar streaks resulting from inhomogeneities in the glass blank. The outer surface of the large surface of the fire resistant glass suppliers brick should be less than 1 mm, the convexity should be less than 2 mm, the weight should meet the quality standard, no surface warpage, notch, burr and other quality defects, the angle should be square.
The above is a general method for identifying the quality of glass. Special glass needs to be tested with special instruments.