Metal solder-microwave welded and strip frame-edge-sealed convex low vacuum glass and manufacturing method thereof

Abstract

The invention relates to low vacuum glass. The low vacuum glass is characterized in that each of upper glass and lower glass is convex glass, edge sealing strip frames are arranged on the welded peripheries of the upper glass and the lower glass, and the upper glass and the lower glass are welded together by utilizing metal or alloy solder in a microwave oven; and the manufacturing of the low vacuum glass is simpler and more convenient, and the matching of the upper and the lower edge sealing strip frames can ensure a good sealing effect. The method has the advantages of simpleness in manufacturing process, low cost, high production efficiency, reliability in sealing and connecting and good sealing effect; the one-step large-batch preparation of the low vacuum glass can be realized by utilizing the technology, and the manufactured low vacuum glass is strong in resistance to wind pressure and good in heat insulation and sound insulation; and the method can be used for manufacturing the ordinary low vacuum glass and is particularly suitable for manufacturing tempered low vacuum glass.

Description

technical field [0001] The invention relates to the processing and manufacturing of low-altitude glass, in particular to a method for making low-altitude glass and its products. Background technique [0002] With the strengthening of environmental protection and energy saving awareness, insulating glass has been widely promoted and applied, effectively improving the thermal insulation and sound insulation performance of doors and windows. The distance between two pieces of flat glass of insulating glass, that is, the thickness of the air layer determines the effect of heat preservation and sound insulation. The thicker the air layer, the better the heat preservation and sound insulation effect, but increasing the thickness of the air layer will increase the thickness of the door and window frames. Therefore, it will increase the production cost of doors and windows; other methods, such as the use of coated glass, film sticking and filling inert gas in the middle of insulatin...

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Problems solved by technology

Due to the organic sealant itself containing moisture, poor anti-aging performance, poor air tightness and other reasons, the insulating glass often fails, which seriously affects the service life of the insulating glass.

[0004] The air in the air layer of insulating glass is sealed between two pieces of glass. Due to the change of external temperature, the pressure of the air layer will change. When the external temperature is high, the pressure is greater than atmospheric pressure and the glass is convex. When the external temperature is low, the pressure is lower than atmospheric pressure. , The glass is concave, resulting in the so-called "breathing" phenomenon, which affects the normal service life of the insulating glass

[0005] The patent "convex low-altitude glass, flat low-altitude glass and its preparation method" applied by the applicant of the present invention describes the edge sealing of low-altitude glass in a high-temperature edge-sealing furnace by using conventional heating to weld two pieces of glass together with low-temperature solder. The disadvantages of conventional heating are long heating time, slow heating rate, slower cooling rate, high energy consumption, and poor heating uniformity, especially when making Low-E low-altitude glass, because the Low-E film seriously restricts radiation heat transfer, so its disadvantages more prominent; in addition, direct use of metal or alloy as solder has poor bonding force with glass

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