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Method for producing float plate glass and apparatus for producing float plate glass

A technology of float flat glass and manufacturing method, applied in glass production and other directions, can solve problems such as damage and deformation of bottom shell, and achieve the effect of suppressing bubbles and reducing bubble defects

Active Publication Date: 2013-07-17
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the case of constructing the bathtub as described above, there is a risk that the molten metal will pass through the joints of the bottom bricks and reach the bottom case, and the bottom case may be deformed or damaged.

Method used

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  • Method for producing float plate glass and apparatus for producing float plate glass
  • Method for producing float plate glass and apparatus for producing float plate glass
  • Method for producing float plate glass and apparatus for producing float plate glass

Examples

Experimental program
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Embodiment 1

[0070] In Example 1, with figure 1 and figure 2 The illustrated method of manufacturing float-formed sheet glass produces sheet glass.

[0071] First, the raw material of alkali-free glass was thrown into a melting tank, and molten glass was manufactured.

[0072]Next, molten tin was accommodated in a bath provided with refractory bricks and an iron casing covering the refractory bricks. After containing the molten tin, it is cooled using a fluid supply device provided below the bottom shell so that the temperature of the outer surface of the bottom shell covering the bottom bricks forming the hearth of the bath is lower than the melting point of tin.

[0073] Then, the above-mentioned molten glass is continuously supplied onto the surface of the molten tin, and the molten glass is made to flow from upstream to downstream of the bath along the surface of the molten metal. During the flow of the molten glass, the fluid supply device blows air toward the outer surface of th...

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Abstract

The present invention is related to a method for producing float plate glass, wherein: molten glass is produced by introducing a glass starting material into a melting tank; the molten glass is continuously supplied on the surface of a molten metal which is contained in a bath that is provided with bottom bricks and a bottom casing that covers the bottom bricks; and the molten glass is caused to flow along the surface of the molten metal in a predetermined direction, so that the molten glass is float-formed into a strip-shaped glass ribbon. In this method for producing float plate glass, the temperature fluctuation range of the outer surface of the bottom casing is controlled within 4 DEG C.

Description

technical field [0001] The invention relates to a method for manufacturing float flat glass and a manufacturing device for float flat glass. Background technique [0002] Production of flat glass by float forming was carried out by the method shown below. Glass raw materials are thrown into a melting tank to obtain molten glass. The obtained molten glass is continuously supplied onto the surface of the molten metal contained in the bath. The supplied molten glass is flowed in a predetermined direction along the surface of the molten metal, and float-formed into a ribbon-shaped glass ribbon. The glass ribbon is taken out from the outlet of the bath, annealed in an annealing furnace, cleaned, and cut into a predetermined size. [0003] The manufacturing method of manufacturing flat glass by float forming has high productivity and is excellent in flatness. Therefore, it is widely used in flat glass for construction, flat glass for automobiles, and flat glass for FPD (Flat P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B18/02
CPCC03B18/16Y02P40/57C03B18/02C03B18/18
Inventor 泷口哲史井上俊二谷井史朗
Owner ASAHI GLASS CO LTD
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