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At present, the common flat glass that can be seen on the market is float glass.
Float glass refers to a production process of flat glass. The forming process of float glass is completed in a tin trough fed with protective gas (N2 and H2). The molten glass continuously flows into and floats on the relatively dense tin liquid surface from the tank kiln.
Under the action of gravity and surface tension, the glass liquid spreads and flattens on the tin liquid surface, forming a smooth upper and lower surface, hardening and cooling, and is led to the transition roll table. Roller of roller table rotates, pulls glass belt out of tin trough and enters annealing kiln. After annealing and cutting, flat glass products are obtained. Floating method is compared with other forming methods.
Its advantages are: suitable for high-efficiency manufacturing of high-quality flat glass, such as no ribs, uniform thickness, flat upper and lower surfaces, parallel to each other; the size of the production line is not limited by forming methods, low energy consumption per unit product; high utilization rate of finished products; easy to scientific management and Realization of mechanization, automation and labor on the whole line. High productivity; continuous operation cycle can last for several years, which is conducive to stable production; it can provide suitable conditions for on-line production of some new varieties, such as electro-floatation reflective glass, sprayed film glass during annealing, cold end surface treatment, etc.