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Online surface enhancing method of flotation-process aluminum silicate flat glass

A flat glass, aluminosilicate technology, applied in glass tempering, glass production, glass manufacturing equipment and other directions, can solve the problems of inability to strengthen online, increase cost, prolong construction period, etc., achieve short spray processing time, reduce working hours and Energy consumption, the effect of broadening the application field

Active Publication Date: 2014-02-26
GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary soda-lime-silica flat glass is used more and more in construction, transportation and other fields, but its strength is low. In order to make up for its strength shortcomings, the thickness of flat glass is basically more than 5mm. In special fields, laminated glass is also required. The thickness of flat glass Will further increase, resulting in an increase in its own weight, and the cost will increase accordingly
[0003] As another option in the market, aluminosilicate flat glass is slightly stronger than ordinary soda-lime-silicate flat glass, so it is welcomed by the market to a certain extent, but it still fails to meet the market's demand for reducing the thickness and weight of flat glass
[0004] There are also some methods to increase the strength of glass in the prior art, but they basically adopt the secondary processing method of reheating and tempering after glass annealing, which cannot be strengthened online, which not only increases energy consumption, but also prolongs the construction period and reduces efficiency. It is not an ideal strengthening method. Moreover, the enhancement effect of these methods is not ideal
[0005] Therefore, there is a lack of a method in the prior art that can be strengthened online during the glass preparation process. The glass can be formed once without secondary heating, and the strengthening effect is obviously better than that of ordinary soda-lime-silica flat glass.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The chemical composition of flat aluminosilicate glass is SiO 2 61%, Al 2 O 3 16%, CaO 0.5%, MgO 7%, Na 2 O11%, K 2 O 4%, Sb 2 O 3 0.5%, after the molten glass is formed in the tin bath, it enters the high-temperature chemical molten salt spraying device at a temperature of 580℃, and sprays the molten salt with the mass percentage of LiCl: NaCl=7:3 on the glass surface. The amount is 5mL high temperature containing Li + The molten salt / square meter glass is kept for 1 min in the high-temperature spraying device, and then enters the pre-annealing zone to complete the glass annealing process. After chemical strengthening, its performance indicators are shown in Example 1 in Table 1.

Embodiment 2

[0032] The chemical composition of flat aluminosilicate glass is SiO 2 61%, Al 2 O 3 16%, CaO 0.5%, MgO 7%, Na 2 O11%, K 2 O 4%, Sb 2 O 3 0.5%, after the molten glass is formed in the tin bath, it enters into the high-temperature sealed spraying device at a temperature of 600℃, and sprays the molten salt with a mass percentage of LiCl:NaCl=8:2 on the surface of the glass. The spray amount is 20mL high temperature containing Li + The molten salt / square meter glass is kept in the high-temperature spraying device for 2 minutes, and then enters the pre-annealing zone to complete the glass annealing process to achieve the effect of strengthening the aluminosilicate flat glass. After chemical strengthening, its performance indicators are as shown in Example 2 in Table 1. Show.

Embodiment 3

[0034] The chemical composition of flat aluminosilicate glass is SiO 2 61%, Al 2 O 3 16%, CaO 0.5%, MgO 7%, Na 2 O11%, K 2 O 4%, Sb 2 O 3 0.5%, after the molten glass is formed in the tin bath, it enters the high temperature sealing spraying device at a temperature of 620℃, and sprays the molten salt with a mass percentage of LiCl:NaCl=8:2 on the glass surface. The spraying amount is 14mL high temperature containing Li + The molten salt / square meter glass is kept in the high-temperature spraying device for 10 minutes, and then enters the pre-annealing zone to complete the glass annealing process to achieve the effect of strengthening the aluminosilicate flat glass. After chemical strengthening, its performance indicators are as shown in Example 3 in Table 1. Show.

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PUM

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Abstract

The invention relates to an online surface enhancing method of flotation-process aluminum silicate flat glass. According to the method, high-temperature Li<+>-containing fused salt is adopted to carry out spraying treatment onto formed aluminum silicate flat glass between a tin slot and a pre-annealing zone in a process of preparing aluminum silicate flat glass by the flotation process. The enhancing method disclosed by the invention is adopted, so that enhanced aluminum silicate flat glass which is 3mm thick replaces common soda-lime-silica glass which is 5mm thick to satisfy glass strength requirements in fields of building and traffic; moreover, cost can be lowered and working hours can be saved.

Description

technical field [0001] The invention belongs to the field of silicate glass surface enhancement, in particular to an online surface enhancement method for float aluminosilicate flat glass. Background technique [0002] Ordinary soda-lime-silica flat glass is used more and more in construction, transportation and other fields, but its strength is low. In order to make up for its strength shortcomings, the thickness of flat glass is basically more than 5mm. In special fields, laminated glass is also required. The thickness of flat glass Will further increase, resulting in an increase in its own weight, and the cost will increase accordingly. [0003] As another option in the market, aluminosilicate flat glass is slightly stronger than ordinary soda-lime-silicate flat glass, so it is welcomed by the market to a certain extent, but it still fails to meet the market's demand for reducing the thickness and weight of flat glass . [0004] There are also some methods to increase t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/03
CPCY02P40/57
Inventor 程金树于长军郭振强潘清涛章宇李红磊
Owner GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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