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Glass-to-metal sealing structure and preparation method thereof

A technology of connecting structure and glass, applied in the field of materials, can solve the problems of complex manufacturing process, high process cost and high expansion coefficient

Active Publication Date: 2015-04-22
山东汇银新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3.3 Borosilicate glass is a common material with low price
The disadvantages of this method are: the production process is complicated and the labor cost is high
However, the expansion coefficient of austenitic stainless steel is relatively high, which is quite different from that of glass. On the one hand, it requires a higher degree of wall thickness reduction, which increases the process cost

Method used

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  • Glass-to-metal sealing structure and preparation method thereof
  • Glass-to-metal sealing structure and preparation method thereof
  • Glass-to-metal sealing structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The glass and metal sealing structure of the present embodiment, its preparation method comprises the following steps:

[0031] 1) Install the end of the ferritic stainless steel ring 1 to be sealed with the glass on the tapered expansion mold 2, such as figure 1 shown.

[0032] 2) Push the stainless steel ring 1 toward the tire mold 2 to expand the end, such as figure 2 shown.

[0033] 3) The end of the ferritic stainless steel ring 1 to be sealed with the glass is processed by CNC to an inclination angle of 3°.

[0034] 4) Seal the stainless steel ring 1 prepared in the above steps and the glass 3 (refer to image 3 shown). The specific method of sealing is:

[0035] a) The metal is oxidized in a wet hydrogen furnace at a temperature between 800 and 1200°C. At this temperature, the wet hydrogen forms an oxide layer on the surface of the metal ring, which facilitates the bonding between the glass and the metal.

[0036] b) Sealing is carried out at high tempera...

Embodiment 2

[0041] The preparation method of the sealing structure of glass and metal in this embodiment comprises the following steps:

[0042] 1) Install the end of the ferritic stainless steel ring 1 to be sealed with the glass on the tapered expansion mold 2, such as figure 1 shown.

[0043] 2) Push the stainless steel ring 1 toward the tire mold 2 to expand the end, such as figure 2 shown.

[0044] 3) The end of the ferritic stainless steel ring 1 to be sealed with the glass is processed by CNC to an inclination angle of 2°.

[0045] 4) Seal the stainless steel ring 1 prepared in the above steps with the glass, such as image 3 shown. The specific sealing method is the same as that in Embodiment 1.

[0046] In this embodiment, the expansion coefficient of the glass tube is 3.4×10 -6 m / (m.K), the expansion coefficient of ferritic stainless steel is 12×10 -6 m / (m.K). The chemical composition of the glass tube is (all mass fractions): 85% silicon oxide, 10% boron oxide, 2% sodi...

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Abstract

The invention relates to a glass-to-metal sealing structure and a preparation method thereof. The sealing structure comprises a glass tube having the expansion coefficient of 3.1*10<-6> m / (m.K) to 3.4*10<-6> m / (m.K) and ferrite stainless steel having the expansion coefficient of 10*10<-6> m / (m.K) to 12*10<-6> m / (m.K) and sealed with the glass tube. The sealing structure adopts a Housekeeper seal mode, firstly one end of the annular or tubular ferrite stainless steel is thinned, and then the thinned ferrite stainless steel is sealed with glass. The glass-to-metal sealing structure can effectively reduce the mismatching degree of the thermal expansion coefficients of the glass and the metal, the stability and the antioxidant capacity of the sealing structure are improved, process and manpower costs are reduced, and the residual stress is reduced.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a glass-metal sealing structure, a preparation method and application thereof. Background technique [0002] The production of metal rings or metal tubes and glass tubes is an existing technology. The difficulty of this type of sealing is the difference in the thermal expansion coefficients of metal and glass. To make such a seal, the metal needs to be oxidized in a wet hydrogen furnace at a temperature between 800 and 1200°C. At this temperature, the wet hydrogen forms an oxide layer on the surface of the metal ring, which facilitates the bonding between the glass and the metal. [0003] The sealing is carried out at a very high temperature. At this time, the glass has a low viscosity and can infiltrate and fuse with the prepared oxide layer on the metal ring. As the seal cools down, the glass reaches its annealing temperature, at which point stresses from deformation remain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C27/00
CPCC03C8/24C03C27/00C22C38/18C22C38/40
Inventor 康雪慧
Owner 山东汇银新能源科技有限公司
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