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Production process for flat tempered glass

A production process and glass technology, applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of not improving glass thermal stability, appearance quality, power consumption, and ineffective control of wave curvature, etc., to achieve Reduced probability, good safety, low bow curvature effect

Inactive Publication Date: 2015-02-18
NINGBO HEXIN GLASS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface smoothness and surface stress of the tempered glass obtained by this preparation process have been improved to a certain extent, but the glass is cooled by air cooling in the production process, which needs to provide a large flow of air in a short time, which consumes a lot of power, and the production This method cannot effectively control the wave curvature, and does not improve the thermal stability and appearance quality of the glass, etc.

Method used

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  • Production process for flat tempered glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Cut the float glass with a thickness of 12mm, smooth the edge of the cut glass, clean it, and clean the dust, oil, impurities, etc. on the glass surface, so as to prevent these impurities from being brought into the convection tempering furnace, causing Pockets are formed on the surface of the final tempered glass product;

[0021] Put the above-mentioned cleaned glass horizontally on the roller table, and send it into the convection tempering furnace through the ceramic roller table for heating treatment. The heating treatment is simultaneous heating of the upper and lower surfaces of the glass: the first section: the heating temperature of the upper surface of the glass : 470°C, lower surface heating temperature: 460°C, heating time 180s; second zone: glass upper surface heating temperature: 695°C, lower surface heating temperature: 690°C, heating time 250s;

[0022] The above-mentioned heated glass is taken out of the furnace and sent to the flat air grid, firstly th...

Embodiment 2

[0024] Cut the float glass with a thickness of 5mm, smooth the edge of the cut glass, clean it, and clean the dust, oil, impurities, etc. on the glass surface, so as to prevent these impurities from being brought into the convection tempering furnace, causing Pockets are formed on the surface of the final tempered glass product;

[0025]Put the above-mentioned cleaned glass horizontally on the roller table, and send it into the convection tempering furnace through the ceramic roller table for heating treatment. The heating treatment is simultaneous heating of the upper and lower surfaces of the glass: the first section: the heating temperature of the upper surface of the glass : 480°C, lower surface heating temperature: 470°C, heating time 150s; second zone: glass upper surface heating temperature: 700°C, lower surface heating temperature: 695°C, heating time 220s;

[0026] The above-mentioned heated glass is taken out of the furnace and sent to the flat air grid, firstly thro...

Embodiment 3

[0028] Cut the float glass with a thickness of 19mm, smooth the edge of the cut glass, clean it, clean the dust, oil, impurities, etc. on the glass surface, so as to avoid these impurities being brought into the convection tempering furnace, causing Pockets are formed on the surface of the final tempered glass product;

[0029] Put the above-mentioned cleaned glass horizontally on the roller table, and send it into the convection tempering furnace through the ceramic roller table for heating treatment. The heating treatment is simultaneous heating of the upper and lower surfaces of the glass: the first section: the heating temperature of the upper surface of the glass : 460°C, lower surface heating temperature: 450°C, heating time: 200s; second interval: glass upper surface heating temperature: 690°C, lower surface heating temperature: 685°C, heating time: 280s;

[0030] The above-mentioned heated glass is taken out of the furnace and sent to the flat air grid, firstly through...

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Abstract

The invention relates to a production process for flat tempered glass, and belongs to the technical field of building materials. The production process comprises the following steps: cutting, edging and cleaning glass; placing the cleaned glass on a roller bed, and conveying the glass into a convection tempering furnace for heating treatment by virtue of the roller bed, wherein heating temperature in a first interval is 450 to 500 DEG C, heating time in the first interval is 100 to 250 seconds, heating temperature in a second interval is 680 to 700 DEG C, and heating time in the second interval is 200 to 300 seconds; discharging the heated glass out of the furnace, feeding the glass into a flat air grid, quenching the glass for 80 to 120 seconds under the air pressure of 0.1 to 4.8KPa by virtue of upper and lower air grids in the flat air grid until the temperature of the surface of the glass is 240 to 260 DEG C, and then quenching the glass to normal temperature to obtain a flat tempered glass finished product. The production process for the flat tempered glass is simple, easy, time-saving and energy-saving, the safety of the tempered glass is remarkably improved, and the bending strength and impact strength of the tempered glass are also remarkably strengthened.

Description

technical field [0001] The invention relates to a tempered glass, in particular to a production process of a flat tempered glass, which belongs to the technical field of building materials. Background technique [0002] Tempered glass is a kind of prestressed glass, which is obtained by processing annealed glass into required size and shape, heating to softening point at high temperature, and then quenching. Tempered glass has high mechanical strength, impact strength, and bending strength, and has good safety and thermal stability. It is currently the most commonly used form of safety glass. Therefore, tempered glass is widely used in the fields of construction, automobiles, home appliances, furniture, electronics and instruments. [0003] At present, there are two main production processes for tempered glass: physical tempering and chemical tempering. Physical tempered glass is mainly made by heating ordinary flat glass in a heating furnace to close to the softening temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/012C03B27/04
CPCC03B29/08C03B27/044
Inventor 舒贵定
Owner NINGBO HEXIN GLASS TECH
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