What is the difference between ordinary flat glass and float glass?
A: Both plain flat glass and float glass are flat glass. It is just a different production process and quality.
Ordinary flat glass is made of quartz sandstone powder, silica sand, potassium fossil, soda ash, thenardite and other raw materials. It is prepared according to a certain proportion and is melted at high temperature by the melting furnace. It is transparent and colorless by vertical drawing method or flat drawing method and calendering method. plate glass. Ordinary flat glass is divided into three categories according to the quality of appearance, first-class products and second-class products. According to the thickness, it is divided into five types: 2, 3, 4, 5, and 6 mm.
B: Float glass is prepared by using sea sand, quartz sandstone powder, soda ash, dolomite and other raw materials according to a certain ratio. After melting at high temperature, the molten glass flows continuously from the pool kiln to float on the metal surface. A glass ribbon with a uniform thickness and a polished surface, which is cooled and hardened and then detached from the molten metal, and then annealed and cut into a transparent colorless flat glass. The surface of the glass is particularly smooth and smooth, the thickness is very uniform, and the optical distortion is small. According to the appearance quality, float glass is divided into three categories: excellent products, first-class products and qualified products. According to the thickness, it is divided into nine types: 3, 4, 5, 6, 8, 10, 12, 15, and 19 mm.
C: The appearance quality grade of ordinary flat glass is judged according to the number of defects such as ribs, bubbles, scratches, sand, enamel, and wire. The appearance quality level of float glass is judged based on the number of defects such as optical distortion, bubbles, inclusions, scratches, lines, and fog spots.
D: ordinary glass, emerald green, fragile, low transparency, easy to aging deformation under rain and exposure
Float glass, transparent float glass is a glass paste that enters 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 groove, so that the two sides of the glass are smooth and uniform, and the ripple disappears. production. Dark green, smooth surface without ripples, good transparency and certain toughness.
E: The production process of float glass is different from ordinary glass. The advantage is that the surface is hard, smooth and flat. The color of the float glass is different from that of ordinary glass. It is whitish and the object is not distorted after reflection. Type of deformation.
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