What Is The Difference Between Ordinary Flat Glass And Float Glass?

- Mar 30, 2018 -

A: Common flat glass and float glass are flat glass. Only the production process and quality are different.


Ordinary plate glass is made of quartz sandstone powder, silica sand, potash fossil, soda ash, mirabilite and other raw materials, prepared according to a certain proportion, melted at a high temperature in the melting furnace, and produced by the vertical lead method or the flat pull method and the calendering method. plate glass. Ordinary flat glass is divided into special products, first-class goods, and second-class goods according to the appearance quality. According to the nominal thickness is divided into 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 22, 25mm a total of 12 specifications. (See "Plasma Glass" GB11614-2009)


B: Float glass is made of sea sand, quartz sandstone powder, soda ash, dolomite and other raw materials, prepared by a certain proportion, melted at a high temperature in the melting furnace, and the glass liquid continuously flows from the pool kiln to the surface of the metal liquid and spreads. Thick and evenly flat, fire-polished glass ribbon, after cooling and hardening to separate from the metal liquid, and then cut through annealed transparent colorless flat glass. The glass surface is particularly smooth and flat, and its thickness is very uniform. Optical distortion is very small. Float glass is classified according to appearance quality into excellent products, first grade products and qualified products. According to the thickness is divided into 3,4,5,6,8,10,12,15,19mm nine kinds.


C: The appearance quality level of ordinary flat glass is judged by the number of defects such as ripples, bubbles, scratches, sand grains, flaws, and lines. The appearance quality grade of float glass is judged by the number of defects such as optical distortion, bubbles, inclusions, scratches, lines, and fog.


D: ordinary glass, emerald green, fragile, low transparency, easy aging and deformation under rain exposure.


Float glass and transparent float glass are glass pastes that enter the tin bath through the control gate. After floating on the surface of the molten tin due to gravity and its surface tension, it enters the cold sink, making the glass on both sides smooth and even, and the ripples disappear. production. Dark green, smooth surface without corrugation, good visibility, with a certain degree of toughness.


E: The production process of float glass and ordinary glass is different. The advantage is that the surface is hard, smooth and smooth. The color of the float glass is different from that of ordinary glass on the side, white, and the object is not distorted after reflection. The deformation.


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