Method for preparing metallized layer for vacuum glass metal sealing

A metallized layer and vacuum glass technology, which is applied in the field of preparing metallized layers on glass substrates, can solve problems such as reduced strength of sealing edges, cracking of vacuum glass, and solder erosion of transition layers, etc., to improve yield and service life , Improve the strength and airtightness, and the effect of good ductility

Inactive Publication Date: 2017-07-28
LUOYANG LANDGLASS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Later, with the continuous deepening of research and experiments, the applicant found that: for metallized glass plates, there will be a phenomenon that the solder erodes the transition layer during the brazing process, which directly manifests as a decrease in the strength of the sealing edge. The cracking of the solder along the silver film transition layer, commonly known as silver film tearing, will eventually lead to direct cracking or chronic gas leakage of the sealed vacuum glass, which will have an extremely adverse impact on the quality of the finished product and the later service life of the vacuum glass

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  • Method for preparing metallized layer for vacuum glass metal sealing

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Embodiment 1

[0027] Such as figure 1 As shown, the preparation method of the metallized layer for vacuum glass-to-metal sealing of the present embodiment comprises the following steps:

[0028] Step 1, preparing an Ag metal paste coating with a weight content of 70%-90% on the surface of the area to be sealed around the glass plate, the thickness of the metal paste coating is 10 μm to 35 μm, and the metal paste coating is dip-coated , spraying, screen printing, manual coating or mechanical coating on the surface of the area to be sealed around the glass plate, when the metal paste coating is prepared on the surface of the glass plate by screen printing process , the mesh number of the screen plate used is 180 mesh to 400 mesh;

[0029] Step 2, drying the metal slurry coating;

[0030] Step 3, preheat the glass plate to 200°C to 350°C, preferably 230°C to 300°C, and keep it warm for 100 to 120 seconds;

[0031] Step 4, using a sintering process to heat the metal paste coating, the specif...

Embodiment 2

[0038] The preparation method of the metallized layer for vacuum glass-to-metal sealing of the present embodiment comprises the following steps:

[0039] Step 1, preparing Ag metal paste coating with a weight content of 70%-90% on the surface of the area to be sealed around the edge of the glass plate, the metal paste coating is dip-coated, sprayed, screen-printed, hand-coated or The method of mechanical coating is prepared on the surface of the area to be sealed around the glass plate. When the metal paste coating is prepared on the surface of the glass plate by the screen printing process using a screen plate, the mesh number of the screen plate used is 180 mesh to 400 mesh;

[0040] Step 2, drying the metal slurry coating;

[0041] Step 3, preheating the glass plate to a temperature of 200°C to 350°C, preferably 230°C to 300°C, and keeping it warm for 100 seconds to 120 seconds, preheating the glass plate and further curing the metal paste coating;

[0042] Step 4, using ...

Embodiment 3

[0047] The preparation method of the metallized layer for vacuum glass-to-metal sealing of the present embodiment comprises the following steps:

[0048] Step 1, preparing an Ag metal paste coating with a weight content of 70% to 90% on the surface of the area to be sealed around the edge of the glass plate, the metal paste coating is dip-coated, sprayed, screen-printed, hand-coated or It is prepared by mechanical coating on the surface of the area to be sealed around the glass plate. When the metal paste coating is prepared on the surface of the glass plate by screen printing with a screen plate, the mesh number of the screen plate is 180 mesh to 400 mesh;

[0049] Step 2, drying the metal slurry coating;

[0050] Step 3, preheat the glass plate to a temperature of 200°C to 350°C, preferably 230°C to 300°C, and keep it warm for 100 seconds to 120 seconds;

[0051] Step 4, using a sintering process to heat the metal slurry coating, the specific method is: use induction heati...

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Abstract

The invention discloses a method for preparing a metallized layer for vacuum glass metal sealing. The method comprises the following steps: 1, preparing a metal slurry coating on the surface of a to-be-sealed area at the periphery of a glass plate; 2, drying the metal slurry coating; 3, preheating the glass plate to the temperature of 200-350 DEG C, and maintaining the temperature in a set time period; 4, heating the metal slurry coating by adopting a sintering process, and enabling the metal slurry coating to be consolidated onto the glass plate so as to form a metallized layer; and 5, repeating the steps 1-4 at least one time, and completing the preparation of the metallized layer for vacuum glass metal sealing. The problems that the strength of a sealed edge is low and the gas tightness is poor when the vacuum glass is sealed by a metal brazing process are solved, the strength and gas tightness of the vacuum glass sealed edge can be obviously improved, and the yield and service life of vacuum glass production are further improved.

Description

technical field [0001] The invention relates to the technical field of vacuum glass, in particular to a method for preparing a metallized layer on a glass substrate in a vacuum glass-to-metal sealing process. Background technique [0002] The vacuum glass sealed with low-melting point glass powder needs a temperature between 380°C and 450°C to melt the low-melting glass powder. Vacuum glass is not safety glass and its use is strictly restricted. The vacuum glass compounded with safety glass is only used in some high-end buildings due to its high manufacturing cost. In order to reduce manufacturing costs, Qingdao Hengda uses tempered glass plates to make vacuum glass, uses glass powder with a lower melting point, and seals the edges at a relatively lower temperature; Beijing Xinliji uses lower edge sealing than Qingdao Hengda Temperature, combined with external pressure to solve the problem of insufficient fluidity of low-temperature edge-sealed glass solder to prepare toug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/06C03C27/08
CPCC03C17/06C03C27/08
Inventor 赵雁
Owner LUOYANG LANDGLASS TECH CO LTD
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