Production process of float glass

The forming process for float glass production is done in a tin bath with protective gas (N2 and H2). The molten glass continuously flows from the kiln and floats on the surface of the relatively dense tin liquid. Under the action of gravity and surface tension, the molten glass spreads on the tin surface, flattens, and the upper and lower surfaces are flattened, hardened and cooled. After being introduced into the transition roller table. The roller of the roller table rotates, and the glass ribbon is pulled out of the tin bath into the annealing kiln, and after annealing and cutting, a flat glass product is obtained. Compared with other forming methods, the float method has the following advantages: It is suitable for high-efficiency manufacturing of high-quality flat glass. If there is no stratum, the thickness is uniform, the upper and lower surfaces are flat and parallel to each other; the scale of the production line is not limited by the forming method, and the energy of the unit product Low consumption; high utilization rate of finished products; easy to scientifically manage and realize full-line mechanization and automation, high labor productivity; continuous operation cycle can last for several years, which is conducive to stable production; can provide suitable conditions for online production of some new varieties, such as Electro-float reflective glass, sprayed film glass during annealing, cold-end surface treatment, etc.

Single-chip float glass has poor sound insulation performance, and its performance is based on GB/T8485-2002 "Building exterior window air sound insulation performance grading and its detection method" and GBJ75-1984 "Building sound insulation measurement specification", and refer to international The standard ISO140 and ISO717 identify the sound insulation performance index, and use the weighted sound insulation Rw to measure the sound insulation performance index, the unit is dB; the other sound insulation performance index STC can be used as a reference index.

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