Method for manufacturing vacuum glass by using negative pressure kettle
A vacuum glass and negative pressure autoclave technology, applied in glass forming, glass remolding, glass production and other directions, can solve the problems of gas nozzle damage, product scrap, affecting the production efficiency and economic benefits of vacuum glass, and improve the finished product. efficiency, energy saving effect
Active Publication Date: 2014-04-16
江苏凯尚绿色建筑管理有限公司
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AI Technical Summary
Problems solved by technology
Among them, when vacuuming and sealing the gas nozzle, the gas nozzle is easily damaged and broken, causing the entire product to be scrapped, resulting in a low yield of vacuum glass production, which greatly affects the production efficiency and economic benefits of vacuum glass
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0018] A method for manufacturing vacuum glass by using a negative pressure kettle, comprising the following steps:
[0019] Step 1: Take the flat glass, cut the edge and clean it to obtain the substrate flat glass;
[0020] Step 2: The two substrates treated in step 1 are supported by flat glass cloth, and sealed with a paste-like glass powder solvent with a melting point of 280°C to 600°C to obtain a vacuum glass semi-finished product;
[0021] Step 3: Put the vacuum glass semi-finished product obtained in step 2 into the negative pressure kettle, and gradually increase the temperature in the negative pressure kettle to volatilize part of the solvent in the paste glass powder, and when it becomes porous and semi-solid, start to lower the negative pressure kettle the air pressure inside;
[0022] Step 4: When the air pressure in the negative pressure kettle drops to 10 -2 , continue to increase the temperature in the negative pressure kettle to 280 ° C ~ 600 ° C, so that th...
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The invention discloses a method for manufacturing vacuum glass by using a negative pressure kettle. The method comprises steps as follows: (1), plate glass is taken and sliced, edges are polished and cleaned, and plate glass substrates are obtained; (2), two processed plate glass substrates processed in the step (1) are supported and combined, an edge sealing material is used for edge sealing, and a semi-finished vacuum glass product is obtained; (3), the semi-finished vacuum glass product obtained from the step (2) is put into the negative pressure kettle, the temperature inside the negative pressure kettle is increased gradually, and the air pressure inside the negative pressure kettle starts to be reduced when the solvent part of the edge sealing material volatilizes and the edge sealing material is in a porous semi-solid state; (4), when the air pressure of the inside of the negative pressure kettle is reduced to the preset air pressure strength, the temperature inside the negative pressure kettle is continuously increased to the melting point of the edge sealing material, so that the edge sealing material is melt into glue to seal existing gaps; and (5) the air pressure inside the negative pressure kettle is increased, the temperature inside the negative pressure kettle is reduced gradually, the product is taken out when the air pressure and the temperature are normal pressure and temperature, and the vacuum glass product is obtained.
Description
technical field [0001] The invention relates to a method for manufacturing vacuum glass, in particular to a method for manufacturing vacuum glass by using a negative pressure kettle. Background technique [0002] In modern buildings, vehicles and ships, door and window glass is the main source of heat dissipation. In the past, double-layer doors and windows were used to solve the heat transfer problem of doors and windows in cold regions. In recent years, the application of insulating glass has greatly improved the heat transfer problem of doors and windows. However, the structural thickness of insulating glass is used in conjunction with specific doors and windows, and its high construction cost limits the wide application of insulating glass, especially in civil buildings. Therefore, vacuum glass came into being. Vacuum glass is a kind of double-layer glass. The edge between the glass and the glass is sealed, and the middle is supported by a lining. The interlayer is vacuu...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C03B23/24
CPCY02P40/57
Inventor 李韵秋徐良
Owner 江苏凯尚绿色建筑管理有限公司