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The Difference Between Flat Glass And Float Glass
Jul 20, 2017

  The difference between flat glass and float glass

  Ordinary flat glass and float glass are flat glass. Just the production process, the quality is different.

  Ordinary flat glass is made of quartz sandstone powder, silica sand, potassium fossil, soda ash, Glauber's salt and other raw materials, according to a certain proportion of preparation, melting through the melting furnace, through vertical drawing method or flat pull method, calendering produced transparent transparent plate glass. Ordinary flat glass by the appearance of quality is divided into special products, first-class goods, second-class three categories. According to the thickness of 2,3,4,5,6 mm five.

  Float glass is made of sea sand, quartz sandstone powder, soda ash, dolomite and other raw materials, according to a certain proportion of preparation, melting through the melting furnace, the glass from the kiln continuous flow and float on the metal surface, Flat, by the fire polished glass belt, after cooling hardening from the metal liquid, and then cut by the insulation of the transparent colored glass plate. The glass surface is particularly smooth and smooth, the thickness is very uniform, the optical distortion is very small. Float glass according to the appearance of quality is divided into excellent products, a product, qualified three categories. According to the thickness of 3,4,5,6,8,10,12 mm seven.

  Ordinary flat glass appearance quality level is based on wave tendons, bubbles, scratches, sand, pimple, line and other defects and determine the number of defects. Float glass appearance quality level is based on optical deformation, bubbles, inclusions, scratches, lines, fog and other defects to judge.

  Float glass

  The molding process of the float process is carried out in the tin bath through which the shielding gas (N2 and H2) is introduced. The molten glass flows continuously from the kiln and floats on the surface of the tin liquid with relatively large density. Under the action of gravity and surface tension, the molten glass is spread on the tin liquid surface and flattened to form the upper and lower surfaces, harden and cool After being cited as a transition roll table. Roller table roller rotation, the glass out of the tin into the annealing furnace into the furnace, the annealing, cutting, to get flat glass products. Float and other molding methods, the advantages are: suitable for high-quality manufacturing of high quality flat glass, such as no wave tendons, uniform thickness, the upper and lower surface smooth, parallel to each other; the scale of the production line is not limited by the forming method, Low productivity; high utilization of finished products; easy scientific management and realization of all mechanization, automation, high labor productivity; continuous operation cycle can be up to several years, is conducive to stable production; for online production of some new varieties to provide suitable conditions, Such as electric float glass, annealing glass coating, cold end surface treatment.





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