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Method for manufacturing float sheet glass and apparatus for manufacturing float sheet 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: 2015-08-26
AGC INC
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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 manufacturing float sheet glass and apparatus for manufacturing float sheet glass
  • Method for manufacturing float sheet glass and apparatus for manufacturing float sheet glass
  • Method for manufacturing float sheet glass and apparatus for manufacturing float sheet glass

Examples

Experimental program
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Effect test

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 below 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 the bot...

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Abstract

The present invention relates to a method for producing a float sheet glass, the method including: producing a molten glass by supplying a glass raw material into a melting bath; supplying continuously the molten glass onto a surface of a molten metal held in a bath including bottom bricks and a bottom casing which covers the bottom bricks; and causing the molten glass to flow in a predetermined direction along the surface of the molten metal, and then float-forming the molten glass into a band plate-shaped glass ribbon, in which a fluctuation range of a temperature of an external surface of the bottom casing is controlled to fall within 4°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 Patents(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 AGC INC
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