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A low-cost online strengthening method for aluminosilicate glass

A low-cost technology of aluminosilicate glass, applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of low production cost, high temperature, increased production cost, etc., and achieve low working temperature and high strength , The effect of reducing investment costs

Active Publication Date: 2016-01-27
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

[0007] The method disclosed in CN102531364A realizes on-line strengthening, but it can only be applied to the preparation of aluminosilicate glass by float method. In addition, this method needs to modify the workshop and equipment, and add an on-line chemical toughening zone, which greatly increases the production cost. The temperature required for the process is higher
[0008] Judging from the above-mentioned glass strength enhancement process, there is currently no production process for rapid glass strength enhancement with low production cost and simple process, which is applied in the fields of construction, automobiles and trains.

Method used

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  • A low-cost online strengthening method for aluminosilicate glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Prepare raw materials according to the following composition ratio: SiO 2 65%, Al 2 o 3 13%, CaO1%, MgO4%, Na 2 O15%, K 2 O1.6%, Sb 2 o 3 0.4%.

[0038] The glass raw materials enter the annealing kiln after mixing, melting and forming. The temperature system of the annealing kiln is: the inlet temperature of the pre-annealing zone is 660°C, the inlet temperature of the annealing zone is 610°C, the inlet temperature of the slow cooling zone is 510°C, and the inlet temperature of the forced cooling zone The temperature is 360°C, and the inlet temperature of the natural cooling zone is 260°C. In this embodiment, a pair of high-temperature spraying devices are installed in the area of ​​480°C in the slow cooling zone, and the high-temperature spraying device is equipped with 480°C KNO 3 Molten salt, high temperature spraying device will KNO 3 The molten salt is atomized and evenly sprayed on both sides of the glass. During the spraying process, the temperature sys...

Embodiment 2

[0040] Prepare raw materials according to the following composition ratio: SiO 2 65%, Al 2 o 3 13%, CaO1%, MgO4%, Na 2 O15%, K 2 O1.6%, Sb 2 o 3 0.4%.

[0041]The glass raw materials enter the annealing kiln after mixing, melting and forming. The temperature system of the annealing kiln is: the inlet temperature of the pre-annealing zone is 660°C, the inlet temperature of the annealing zone is 610°C, the inlet temperature of the slow cooling zone is 510°C, and the inlet temperature of the forced cooling zone The temperature is 360°C, and the inlet temperature of the natural cooling zone is 260°C. In this embodiment, a pair of high-temperature spraying devices are installed in the area of ​​435°C in the slow cooling zone, and KNO at 435°C is installed in the high-temperature spraying device. 3 Molten salt, high temperature spraying device will KNO 3 The molten salt is atomized and evenly sprayed on both sides of the glass. During the spraying process, the temperature s...

Embodiment 3

[0043] Prepare raw materials according to the following composition ratio: SiO 2 65%, Al 2 o 3 13%, CaO1%, MgO4%, Na 2 O15%, K 2 O1.6%, Sb 2 o 3 0.4%.

[0044] The glass raw materials enter the annealing kiln after mixing, melting and forming. The temperature system of the annealing kiln is: the inlet temperature of the pre-annealing zone is 660°C, the inlet temperature of the annealing zone is 610°C, the inlet temperature of the slow cooling zone is 510°C, and the inlet temperature of the forced cooling zone The temperature is 360°C, and the inlet temperature of the natural cooling zone is 260°C. In this embodiment, a pair of high-temperature spraying devices are installed in the area of ​​390°C in the slow cooling zone, and KNO at 390°C is installed in the high-temperature spraying device. 3 Molten salt, high temperature spraying device will KNO 3 The molten salt is atomized and evenly sprayed on both sides of the glass. During the spraying process, the temperature ...

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Abstract

The invention relates to a low-cost on-line reinforcement method of aluminosilicate glass, which comprises the following steps that: a high-temperature spraying device is additionally arranged on an annealing kiln of the glass; when the aluminosilicate glass enters the annealing kiln, the high-temperature spraying device atomizes high-temperature fused salt and uniformly sprays to the surface of the aluminosilicate glass; and the atomized fused salt reacts with the glass rapidly to form a compressive stress layer, so that a reinforcement effect is obtained after the aluminosilicate glass is annealed. The designed on-line reinforcement method of the glass is wide in application scope; the existing glass production technology is not required to be modified to a great extent; the investment cost is lowered; and at the same time, the on-line reinforcement method is lower in working temperature and greatly reduces raw material and energy consumption.

Description

technical field [0001] The invention relates to a low-cost online strengthening method of aluminosilicate glass, in particular, the invention relates to a rapid strengthening process in the glass production process. Background technique [0002] At present, soda-lime-silicate flat glass is used in architectural glass, automobile and train glass. The strength of soda-lime-silica flat glass is not high. The strength of the original glass is only about 70MPa, and the strength of the glass after physical tempering treatment is greater than 200MPa. However, physical tempering requires cumbersome processes such as glass cleaning and edge grinding, which greatly increases production costs. [0003] In recent years, companies such as Corning have developed a kind of aluminosilicate flat glass, which is produced by the overflow method and then chemically strengthened. The flexural strength after treatment is greater than 500Mpa, but the high-alkali aluminum silicon The melting tempe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B27/03
Inventor 程金树郭振强潘清涛章宇于长军李红磊
Owner GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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