Production Process Of Float Glass

The forming process of float glass production is completed in a tin bath filled with protective gases (N2 and H2). Molten glass continuously flows into the tank and floats on the surface of relatively dense tin liquid. Under the action of gravity and surface tension, the glass liquid spreads and spreads on the tin liquid surface, forming a smooth and hardened upper and lower surface. After cooling, it is led up to the transition roller table. The rollers of the roller table rotate, pulling the glass strip out of the tin bath and entering the annealing furnace. After annealing and cutting, the float glass product is obtained. Compared with other molding methods, float glass has the following advantages: it is suitable for efficiently manufacturing high-quality flat glass, such as no wave ribs, uniform thickness, flat upper and lower surfaces, and parallel to each other; The scale of the production line is not limited by the forming method, and the energy consumption per unit product is low; High utilization rate of finished products; Easy to manage scientifically and achieve full line mechanization and automation, with high labor productivity; Continuous work cycles can last for several years, which is beneficial for stable production; Suitable conditions can be provided for online production of new varieties, such as electrofloat reflective glass, spray coated glass during annealing, and cold end surface treatment.
Single piece float glass has poor sound insulation performance, and its performance is evaluated based on GB/T8485-2002 "Classification and Testing Methods for Air Sound Insulation Performance of Building External Windows" and GBJ75-1984 "Measurement Specification for Building Sound Insulation". In addition, international standards ISO140 and ISO717 are used to determine the sound insulation performance indicators. The weighted sound insulation quantity Rw is used to measure the sound insulation performance indicators, and its unit is dB; Another sound insulation performance indicator, STC, can be used as a reference indicator.