Vacuum glass sealing method

A technology of vacuum glass and glass powder, which is applied in glass forming, glass reshaping, glass manufacturing equipment, etc. It can solve problems such as high temperature and rising, and achieve the effects of eliminating air bubbles, increasing welding strength, and shortening heating time.

Inactive Publication Date: 2013-01-09
黄家军
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AI Technical Summary

Problems solved by technology

The "A Vacuum Glass Edge Sealing Method and Equipment" (Application No. 2011100806851) I applied for proposes that when the welding glass powder melts to generate bubbles, the gas pressure in the vacuum heating furnace is pulsed to eliminate the bubbles, mainly to suppress the excessive generation of bubbles. In preparation for degassing at a higher temperature, the air pressure in the heating furnace is a process of "increase--decrease--increase--decrease". Each time the air pressure is increased, the bubbles disappear, and the furnace When the temperature rises, the bubbles are formed again, but the bubbles are less. This method can partially reduce the heating time, but a higher temperature is required for complete degassing.

Method used

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Embodiment 1

[0017] Embodiment 1: as figure 2 As shown, this is a vacuum glass original plate with air extraction holes, a support body 2 is placed in the middle, and welding glass powder 4 is placed around the periphery. The melting temperature of the welding glass powder is 410°C to 430°C. Arrest bar 7 is arranged on welding glass powder 4 outside, and the effect of arresting bar 7 is to prevent that welding glass powder molten liquid flows out lower floor glass plate 5. The effect of the spacer 10 is to prevent the fusing liquid of the welding glass frit from flowing arbitrarily at the upper glass plate 1 . First put the vacuum glass original plate into the vacuum heating furnace, and extract the air in the vacuum heating furnace to make the vacuum degree in the vacuum heating furnace reach 0.05 atmosphere. The purpose of extracting the air in the vacuum heating furnace is to eliminate the adverse effect of air convection on the heating process. Quickly raise the temperature in the va...

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Abstract

The invention relates to a vacuum glass sealing method, which comprises following steps of washing a welding part, placing weld glass powder, heating and melting weld glass and the like, and the method is characterized in that the pressure of the gas surrounding the weld glass powder molten liquid is increased to eliminate the bubbles when the weld glass powder is molten and bubbles are generated. When the pressure of the gas surrounding the weld glass powder molten liquid is increased, the bubbles inside the weld glass powder molten liquid is reduced in a compression way under the effect of the external pressure, the solubility of the bubbles which are dissolved in the weld glass powder molten liquid is increased under the effect of the external pressure, and the bubbles also can be reduced.

Description

technical field [0001] The invention relates to the field of glass sealing, in particular to a vacuum glass sealing method. technical background [0002] In the process of welding components (such as electronic devices and vacuum glass) with welding glass powder, a large number of bubbles will be generated during the melting process of welding glass powder. The reason for the generation of bubbles is that welding glass powder absorbs a lot of air, water and welding glass powder in the production process The gas dissolved in the glass and the low melting point volatile components contained in the welding glass powder itself. In order to eliminate air bubbles, the usual practice is to add clarifying agent, increase the temperature of the welding glass powder melt, reduce the liquid surface pressure of the welding glass powder melt (vacuum removal of air bubbles), prolong the heating time, etc. Although these methods can eliminate bubbles, they all have defects such as long he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/24
Inventor 黄家军
Owner 黄家军
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