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Method for toughening processing of 5-mm toughened glass

A processing method and technology of tempered glass, which are applied in the direction of glass tempering, glass production, glass manufacturing equipment, etc., can solve the problems of low efficiency, long time and high production cost, improve the yield, increase the degree of tempering, and reduce the risk of self-explosion. effect of chance

Inactive Publication Date: 2015-01-28
GUIZHOU DANZHAI HUNG HING TEMPERED GLASS DOORS & WINDOWS LTD
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  • Application Information

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Problems solved by technology

[0004] Close, but the time is too long, the efficiency is low and the production cost is high

Method used

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Embodiment Construction

[0016] A tempering processing method for 5.0 mm tempered glass, comprising the following steps in sequence:

[0017] (1) Place the glass horizontally on the roller table, and send it to the tunnel tempering furnace through the roller table, and carry out heat treatment in sequence according to the interval:

[0018] The first interval: temperature 200-250°C, time 2-3 minutes; second interval: temperature 360-400°C, time 4-5 minutes;

[0019] The third interval: temperature 260-300°C, time 3-4 minutes; fourth interval: temperature 500-560°C, time 4-5 minutes; fifth interval: temperature 600-6800°C, time 5-6 minutes;

[0020] (2) Use high-pressure air to cool the glass surface to a temperature of 280-300°C;

[0021] (3) Add the glass to 155-165°C, 15% potassium nitrate glycerin solution and cool for 5 minutes;

[0022] (4) Add the glass to glycerin at 220-230°C for 6 minutes;

[0023] (5) After taking it out, cool it to room temperature with 60°C hot water mist.

[0024] ...

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Abstract

The invention discloses a method for toughening processing of 5-mm toughened glass. The method comprises the following steps: horizontally placing glass on a roller way, delivering the glass to a passage-type toughening furnace by virtue of the roller way, and performing heat treatment in sequence section by section; cooling the glass by adopting high-pressure blast until the surface temperature of the glass is 260-280 DEG C; cooling the glass for 3-5 minutes by adding the glass into a 12-15% potassium nitrate glycerol solution of which the temperature is 155-165 DEG C; treating the glass for 4-6 minutes by adding the glass into glycerol of which the temperature is 220-230 DEG C; and taking out the glass and cooling the glass to room temperature by using water fog of which the temperature is 55-65 DEG C. According to the method disclosed by the invention, the surface stress distribution of the glass is adjusted by adopting section-by-section heating and cooling treatment to ensure flatness of the toughened glass, and by virtue of the treatments with the potassium nitrate glycerol solution, glycerol and water fog, the toughened degree of the surface of the glass is increased, the probability of spontaneous detonation of the glass during cooling is reduced, the yield of the toughened glass is increased, and requirements on performance indexes of the toughened glass are met.

Description

technical field [0001] The invention relates to a tempered glass processing method, in particular to a tempered processing method for 5.0mm tempered glass. Background technique [0002] Tempered glass has been widely used due to its advantages such as high mechanical strength, excellent thermal shock resistance, and good safety. Most of the existing tempered glass production processes adopt the tempering process using air as the cooling medium, so that the heated glass is subjected to chilling treatment in a short period of time through a large amount of air, thereby completing the tempering process. In order to ensure the performance of tempered glass, it is usually necessary to provide a large flow of air in a short period of time, especially when tempering thin glass. Usually, a high-power fan with high wind pressure and large flow is used to blow air at the same time. [0003] At present, there are also chemical tempering methods for glass tempering. The strength of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/012C03B27/02
CPCY02P40/57C03B27/012C03B27/03C03B27/04
Inventor 罗意荣陈伟
Owner GUIZHOU DANZHAI HUNG HING TEMPERED GLASS DOORS & WINDOWS LTD
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