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Preparation method of air strengthened glass

A glass and wind steel technology, applied in glass manufacturing equipment, glass tempering, glass production, etc., can solve the problems of surface quality that cannot be fully applied to flat tempered glass, cannot be tempered with coated glass, and the glass is heated unevenly. The effect of small impact, elimination of scratches, and reduction of glass deformation

Active Publication Date: 2006-08-30
CHINA BUILDING MATERIALS ACAD
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Problems solved by technology

For example, the Chinese patent applications whose publication numbers are CN1322685 and CN 2481713 disclose the technology that the glass moves in one direction at a constant speed during the tempering process, which can reduce the degree of glass surface scratches, but this method is limited to the tempering of ordinary glass and cannot be used for Tempering of coated glass; at the same time, there are still problems of uneven heating and cooling of the glass
[0010] U.S. Patent No. 5,782,947 discloses a tempering technology that heats glass in sections, mainly using a combination of the traditional radiation heating method and the microwave heating method: use the radiation heating method to heat the glass to the first set temperature, and then use the microwave heating method Rapid heating to the second set temperature where the glass can be formed, this method is suitable for the production of curved tempered glass, but not completely suitable for the production of flat tempered glass The problem of surface quality still has not been resolved

Method used

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Examples

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preparation example Construction

[0024] The preparation method of the wind-tempered glass according to the present invention includes the following steps: firstly placing the glass on a loading table, entering the heating chamber through a conveying roller, preheating and then sending it out of the heating chamber, tempering and cooling, and then unloading the sheets The process is taken out and formed into wind-strengthened glass; the above-mentioned heating chamber is divided into at least 4 heating sections, and a maximum of 6 heating sections can be set; a sealed door with a control device is installed at the outlet of each heating section; the total heating in the heating chamber The temperature is 290℃-720℃, which are arranged in each heating section from front to back; the temperature between the former heating section and the latter heating section increases in a trapezoidal shape, and the temperature difference is 100-150℃; the heating of each section The time is 100-300 seconds respectively; the spec...

Embodiment 1

[0029] Select a piece of ordinary flat glass with a specification of 1000×1000×10mm, check the appearance quality for defects such as stones, bubbles, scratches, etc., grind the surrounding area on a linear edging machine, wash and dry it for later use.

[0030] The air tempering equipment is equipped with a loading table, a heating chamber, a cooling section and an unloading section. The roller table runs through the loading table, heating chamber, cooling process and unloading process; the above-mentioned ordinary flat glass is placed on the roller on the loading table. On the road, start the motor, the roller table rotates, and the glass is sent from room temperature to the heating chamber for heating. The heating chamber is divided into 4 sections, the 1st, 2nd, and 3rd sections are respectively set for electric furnace wire radiation heating, that is, electric furnace wires are respectively installed on the upper and lower sides of the heating section; Airtight boxes are ...

Embodiment 2

[0037] The specifications of the selected glass, the tempering equipment used, the heating time for each section of the heated glass and the speed of the single forward movement of the glass during the operation are the same as in Example 1, and will not be repeated here.

[0038] The difference is that the heating chamber is divided into 4 sections, and the first and third sections are respectively set for electric furnace wire radiation heating, that is, electric furnace wires are respectively installed on the upper and lower sides of the heating section; the second and fourth sections are heated by convective air circulation, That is, airtight boxes are installed on the upper and lower sides of the furnace body, heating devices are installed in the box, air inlets and outlets are arranged at the upper and lower ends, the air inlet is connected to the exhaust end of the fan through pipes, and the air outlet is a spray hole plate, and the ejected gas returns to the air. To the...

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Abstract

The present invention discloses a preparation method of toughened glass. Said preparation method includes the following several steps: (1), utilizing roller way to feed the sheet glass into heating chamber; (2), heating; (3), cooling; and (4), unloading sheet glass. It is characterized by that the internal cavity of said heating chamber is at least divided into four stages, the inlet of heating chamber and outlet of every heating stage are respectively equipped with a sealing door with control device. Besides, said invention also provides the concrete requirements of every steps of said method.

Description

technical field [0001] The invention relates to a preparation method of tempered glass in the field of glass deep processing. Background technique [0002] Wind tempering technology refers to the glass strengthening technology that improves the strength of ordinary flat glass through the heat treatment process. [0003] The strength of wind-tempered glass is 2 to 3 times that of ordinary glass, with good impact resistance and thermal stability, and it is not easy to be broken under external impact; The stress makes the small particles squeeze together, and will not form large fragments, so as to avoid the harm of glass fragments to the human body. Therefore, the wind tempered glass belongs to safety glass and is widely used in construction. [0004] Existing building doors and windows are made of ordinary glass, which loses 40-50% of heating and cooling energy. Coated energy-saving glass such as Low-E glass can greatly improve this energy loss, but the strength of coated en...

Claims

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Application Information

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IPC IPC(8): C03B27/00C03B27/012
CPCY02P40/57
Inventor 张保军苗向阳欧迎春左岩付静刘静赵芳红
Owner CHINA BUILDING MATERIALS ACAD
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