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Method for producing semi-tempered glass

A production method and semi-tempered technology, applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve problems such as unsatisfactory glass flatness, energy consumption, and unstable operation process, so as to avoid collisions, scratches, and operation Flexible, process-stable results

Active Publication Date: 2013-10-30
LUOYANG NORTHGLASS TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a new production method of semi-tempered glass, so as to solve the defects of the prior art that the operation process is unstable, energy consumption, and the flatness of the obtained glass is not ideal

Method used

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  • Method for producing semi-tempered glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 glass thickness is the production of semi-tempered glass of 8mm

[0047] Place the glass horizontally on the roller table, send it to the tempering furnace through the roller table, and then heat the glass to 700°C for 320s;

[0048] The heated glass is conveyed to the quenching zone through the roller table, the glass is placed horizontally on the roller table, and quenched for 300s under the wind pressure of 200Pa;

[0049] Cool the quenched glass under 350Pa wind pressure for 30s; then adjust the height of the upper air grille to 35mm and the lower air grille height to 40mm, and then cool it under 3000Pa wind pressure for 160s. Output the semi-tempered glass finished product with a thickness of 8mm.

Embodiment 2

[0051] Place the glass horizontally on the roller table, send it to the tempering furnace through the roller table, and then heat the glass to 690°C for 400s;

[0052] The heated glass is conveyed to the quenching zone through the roller table, the glass is placed horizontally on the roller table, and quenched for 390s under the wind pressure of 80Pa;

[0053] Cool the quenched glass under 100Pa wind pressure for 50s; then adjust the height of the upper air grille to 48mm and the lower air grille height to 40mm, and then cool it under 3000Pa wind pressure for 200s. Output the semi-tempered glass finished product with a thickness of 10mm.

Embodiment 3

[0055] Place the glass horizontally on the roller table, send it to the tempering furnace through the roller table, and then heat the glass to 680°C for 480s;

[0056] The heated glass is conveyed to the quenching zone through the roller table, the glass is placed horizontally on the roller table, and quenched for 600s under the wind pressure of 35Pa;

[0057] Cool the quenched glass under 50Pa wind pressure for 50s; then adjust the height of the upper air grille to 50mm and the height of the lower air grille to 30mm, and then cool it under 2000Pa wind pressure for 360s. Output the semi-tempered glass finished product with a thickness of 12mm.

[0058] It should be noted that the process parameters in the embodiments may vary according to the temperature and density of the airflow.

[0059] figure 1 It is the picture after cracking of semi-tempered glass produced by the method of the present invention. As shown in the figure, there is no tangential crack expansion when the g...

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Abstract

The invention relates to a method for producing semi-tempered glass. A double-stage cooling method is adopted in a cooling process of the method for producing the semi-tempered glass, namely secondary cooling is added on the basis of reservation of conventional primary cooling, so that the influence of abrupt change of wind pressure on the flatness of the glass is reduced in the cooling process, the semi-tempered glass with better flatness is obtained, and the effects of saving the cooling time, reducing the total energy-saving quantity of the semi-tempered glass to 10 percent of the prior art and promoting the flatness of the semi-tempered glass from 3 / 1,000 to 1 / 1,000 can be achieved.

Description

technical field [0001] The invention relates to a production process of tempered glass, in particular to a production process of semi-tempered glass with excellent flatness. Background technique [0002] Semi-tempered glass is a variety between ordinary flat glass and tempered glass. It has some advantages of tempered glass, such as higher strength than ordinary glass, and at the same time avoids the poor flatness of tempered glass, which is easy to self-explode. Crush and other unsatisfactory weaknesses. When semi-tempered glass is damaged, it cracks radially along the crack source, and generally there is no tangential crack propagation, so it can still maintain the whole without collapsing after being damaged. Semi-tempered glass is suitable for curtain walls and exterior windows in buildings. It can support tempered coated glass, and its image distortion is better than that of tempered glass. [0003] In the semi-tempered glass production process, the heating and coolin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B27/044
Inventor 裴志茹冯平宁波
Owner LUOYANG NORTHGLASS TECH
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