Vacuum glass laminated at high temperature and production method thereof

Abstract

The invention relates to a vacuum glass laminated at high temperature, which comprises an upper glass and a lower glass, the upper glass and the lower glass are plane glass or convex glass, the upper glass and the lower glass are rapidly heated and laminated at high temperature, the circumference can be welded together by pressurizing through a glass solder or a metal solder in a vacuum furnace, an enclosing vacuum layer is formed between the upper glass and the lower glass, and the supporters with lattice arrangement are arranged in the vacuum layer. The vacuum glass and its production method have the advantages that the process is simple and the production efficiency is high, the prepared vacuum glass can eliminate the stress of the sealed edge and can keep the toughening characteristic of the toughened glass, so that toughened vacuum glass can be massively produced, and usage life is increased.

Description

technical field [0001] The invention relates to the technical field of glass deep processing, in particular to a high-temperature laminated vacuum glass and a manufacturing method thereof. Background technique [0002] As a new type of glass with the most energy-saving potential, vacuum glass has achieved large-scale production after more than ten years of research and development, and has been well applied in many fields, especially in the construction field; but there are also obvious The shortcomings are mainly low production efficiency, small production capacity, and inability to produce tempered vacuum glass, etc., which limit its popularization and application in a wider range; the existing large-scale production of vacuum glass uses high temperature (430-480°C) normal pressure The production process of lower edge sealing, low temperature (180-300°C) vacuuming and sealing, because it needs to be kept warm for a period of time at the edge sealing temperature, generally ...

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Problems solved by technology

[0002] As a new type of glass with the most energy-saving potential, vacuum glass has achieved large-scale production after more than ten years of research and development, and has been well applied in many fields, especially in the construction field; but there are also obvious The shortcomings are mainly low production efficiency, small production capacity, and inability to produce tempered vacuum glass, etc., which limit its popularization and application in a wider range; the existing large-scale production of vacuum glass uses high temperature (430-480°C) normal pressure The production process of lower edge sealing, low temperature (180-300°C) vacuuming and sealing, because it needs to be kept warm for a period of time at the edge sealing temperature, generally 15-20min, so that the solder can fully melt and flow and bond to obtain a higher sealing Therefore, tempered glass will be annealed during the edge sealing process under high temperature and long-term action. Although the initial stress of tempered glass can be made very high, only semi-tempered vacuum glass can be obtained; tempered vacuum glass Another main reason why it cannot be produced is the flatness of the glass. During the tempering process, the glass will deform by 0.1-0.3%, and its deformation is far greater than the thickness of the vacuum layer of the vacuum glass. If the vacuum glass is flat during the production process Insufficient high density (especially tempered glass), inconsistent solder thickness, uneven heating during the edge sealing process and other factors will lead to desoldering of the edge sealing, poor airtightness and no vacuum glass, and also lead to inaccurate upper and lower glass. When the support is fully and uniformly supported, the vacuum glass will generate a lot of local stress under the pressure of about 10 tons per square meter of the atmosphere after vacuuming, and these stresses are more pronounced at the corners of the glass. Obviously, the corners are the weakest part of the glass; under the long-term action of these edge-sealing stresses, the vacuum glass with greater stress will break and cause damage, which will not only affect the service life of the vacuum glass, but may also damage the glass. raise security concerns

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