Laminated safety glass appearance quality inspection key points.
Laminated safety glass appearance quality inspection key points. When testing the appearance quality of laminated safety glass, attention should be paid to the inspection of laminated safety glass cracks and missing angles. Once cracks and missing angles appear, laminated safety glass is unqualified. When conducting laminated safety glass flanging detection, each piece of glass is allowed to have a length of less than 10mm per meter on the side length, a depth of less than 2mm from the side of glass to the surface of glass plate, and a thickness of no more than 1/3 of the thickness of glass facing the plate, and only 1 defect number is allowed. During the inspection of laminated safety glass scratches, minor scratches within 0.1mm of the scratch width are allowed, and 4 scratches within 100nm of each square meter area are allowed. The scratches with a width of more than 0.1mm are allowed to have 4 scratches with a width of between 0.1 nm and 1nm and a length of less than 100nm within each square meter area.
Key points for inspection of laminated safety glass fragments. When testing laminated safety glass fragments, 4 laminated safety glass pieces should be taken for testing. For the pressure safety glass of flat surface layer, the laminated pressure safety glass with a nominal thickness of 3mm or a nominal thickness of more than 15mm shall be controlled within 30 pieces when the fragmentation state test is carried out. Laminated safety glass with nominal thickness of 4-12mm, the minimum number of fragments per laminated safety glass sample in any 50mm x 50mm area shall be limited to 40 pieces. For curved laminated safety glass, the laminated safety glass with a nominal thickness greater than or equal to 4mm shall be within 30 pieces in any 50mm x 50mm zone for each laminated safety glass sample. At the same time, for the horizontal condition detection of laminated safety glass, it is allowed to exist in small quantity for the long strips with a length of less than 75mm.