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High-intensity tempering process of heat-resistant glass

A heat-resistant glass, high-strength technology, applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve problems such as self-explosion, uneven quenching, etc., achieve uniform quenching temperature, increase strength, and prevent uneven stress Effect

Inactive Publication Date: 2020-12-22
惠州市嘉耀华玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing heat-resistant glass tempering project is prone to uneven quenching and self-explosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A high-strength tempering process for heat-resistant glass, a high-strength tempering process for heat-resistant glass, comprising the following steps:

[0017] S1. Heating the heat-resistant glass. Send the heat-resistant glass to be tempered to a heating furnace for preheating. The heating temperature is 825°C and the preheating time is 1h. Then put the heat-resistant glass to be tempered into the heating furnace and continue heating until 1125°C, the temperature rise rate is 22°C / min, and then conveyed to the exit of the heating furnace by the roller table;

[0018] S2. Spray quenching. At the exit of the hot furnace, pile up and down into two groups of atomizing nozzles. The atomizing nozzles spray in opposite directions. The average particle size of the fog torch sprayed from the nozzles is 42 microns. During this process, the heat-resistant glass is guaranteed The average temperature will be 125°C;

[0019] S3. The heat-resistant glass is air-cooled, and the heat...

Embodiment 2

[0023] A heat-resistant glass high-strength tempering process, S1, heat-resistant glass heating, the heat-resistant glass to be tempered is sent to the heating furnace for preheating, the heating temperature is 850 ° C, the preheating time is 1.2h, and then the heat-resistant glass to be tempered Put the heat-resistant glass into the heating furnace and continue heating to 1150 ° C, the temperature rise rate is 25 ° C / min, and then transported to the exit of the heating furnace by the roller table;

[0024] S2. Spray quenching. At the exit of the hot furnace, pile up and down into two groups of atomizing nozzles. The atomizing nozzles spray in opposite directions. The average particle size of the fog torch sprayed from the nozzles is 45 microns. During this process, heat-resistant glass is guaranteed The average temperature will be 150°C;

[0025] S3. The heat-resistant glass is air-cooled, and the heat-resistant glass is continuously conveyed by the roller table to the cool...

Embodiment 3

[0029] A heat-resistant glass high-strength tempering process, S1, heat-resistant glass heating, the heat-resistant glass to be tempered is sent to the heating furnace for preheating, the heating temperature is 875°C, the preheating time is 1-2h, and then the heat-resistant glass is to be tempered Put the heat-resistant glass into the heating furnace and continue heating to 1150°C, the temperature rise rate is 27°C / min, and then transported to the exit of the heating furnace by the roller table;

[0030] S2. Spray quenching. At the exit of the hot furnace, pile up and down into two groups of atomizing nozzles. The atomizing nozzles spray in opposite directions. The average particle size of the fog torch sprayed from the nozzles is 470 microns. During this process, heat-resistant glass is guaranteed The average temperature will be 175°C;

[0031] S3. The heat-resistant glass is air-cooled, and the heat-resistant glass is continuously conveyed by the roller table to the cooling ...

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Abstract

The invention relates to the technical field of heat-resistant glass, in particular to a high-intensity tempering process of heat-resistant glass. The process comprises the steps of heating of the heat-resistant glass, spraying cold quenching, air cooling of the heat-resistant glass, liquid cooling of the heat-resistant glass and drying of the heat-resistant glass drying. Compared with a traditional mode of quenching via a single quenching medium, a multi-layer cold quenching mode in the invention forms a temperature step, and cold quenching temperature is more uniform from high to low, so thecracking of the heat-resistant glass caused by uneven stress on the heat-resistant glass is prevented, the probability of spontaneous explosion in the toughening process of the heat-resistant glass is reduced, and the strength of the heat-resistant glass after toughening is effectively improved.

Description

technical field [0001] The invention relates to the technical field of high-strength tempering technology for heat-resistant glass, in particular to a high-strength tempering technology for heat-resistant glass. Background technique [0002] In order to meet the market demand, heat-resistant glass came into being. Heat-resistant glass refers to special glass that can withstand the temperature difference between cold and hot fusion. At the same time, in order to ensure the strength of heat-resistant glass, it needs to be tempered. The strength is 4-6 times that of ordinary glass, so the safety performance of tempered glass is higher, so it can be widely used. Glass tempering is obtained by cutting ordinary annealed glass into the required size, then heating it to about 700 degrees close to the softening point, and then cooling it quickly and uniformly. After tempering, uniform compressive stress is formed on the surface of the glass, while tensile stress is formed inside, wh...

Claims

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Application Information

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IPC IPC(8): C03B27/04C03B27/02C03B27/012
CPCC03B27/0422C03B27/02C03B27/012
Inventor 庄仕雪
Owner 惠州市嘉耀华玻璃有限公司
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