Compared with other mechanical manufacturing methods, its advantage is that it can reduce the occurrence of glass unevenness or bubbles caused by mechanical vibration. As long as the liquid glass is continuously added to the liquid surface, infinite glass can be manufactured theoretically.
The forming process of float glass production is completed in a tin bath filled with protective gas.
Molten glass continuously flows in from the tank kiln and floats on the surface of tin liquid with relatively high density. Under the action of gravity and surface tension, the molten glass spreads flat on the surface of molten tin, and the upper and lower surfaces are flat, hardened and cooled before being introduced into the transition roller table. The roller of the roller table rotates to pull the glass ribbon out of the tin bath and enter the annealing kiln, and the flat glass product is obtained after annealing and cutting.
Extended data
Float glass was introduced into the Royal British float glass production line by Luoyang Glass Factory in the late 1970s. It is in the tin bath, and the glass floats on the surface of the tin liquid. So this kind of glass is smooth at first, without water ripple. Used to make mirrors and car glass. It does not shed hair or deform, which is one of its great advantages.
Secondly, the mineral quartz sand used for float glass is good. The produced glass is pure and transparent. Bright and colorless. No glass boiling, bubbles and other phenomena. Thirdly, the structure is compact, thick and smooth, and the same thickness per square meter is heavier than that of a flat plate, so it is easy to cut and not easy to be damaged.
There are more than 30 production lines in China that are produced in strict accordance with national standards. This kind of glass is the best glass for civil buildings. Compared with the thickness, its price per square meter is only about 4 yuan higher than that of flat glass.
Baidu encyclopedia-float glass