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Float glass process
- Apr 11, 2018 -

The forming process of float glass production is performed in a tin bath that is vented to protective gases (N2 and H2). The molten glass continuously flows from the tank kiln and floats on the surface of the relatively dense tin liquid. Under the action of gravity and surface tension, the glass liquid spreads on the surface of the tin liquid, flattened, forms the upper and lower surfaces and is flat, hardened, and cooled. After being introduced on 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. After annealing and cutting, the float glass product is obtained. Compared with other forming methods, the advantages of float method are: Suitable for high-efficiency production of high-quality flat glass, such as no streak, uniform thickness, flat upper and lower surfaces, parallel to each other; the scale of the production line is not limited by the forming method, the energy per unit product Low consumption; High product utilization rate; Easy scientific management and full-line mechanization, automation, high labor productivity; Continuous operation cycle can be as long as several years, is conducive to stable production; can provide suitable conditions for online production of some new varieties, such as Electric float glass, annealing glass, cold end surface treatment, etc.

Monolithic float glass has poor sound insulation performance, and its performance is based on GB/T 8485-2002 "Classification and Detection Methods for Airborne Sound Insulation Performance of Building Exterior Windows" and GBJ75-1984 "Building Sound Insulation Measurement Specification", with reference to international Standards ISO 140 and ISO 717 determine the sound insulation performance index, use weighted sound insulation volume Rw to measure the sound insulation performance index, and its unit is dB; another sound insulation performance index STC can be used as a reference indicator.

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