Laser sealing method and sealing body of glass and Kovar alloy

Abstract

The invention relates to a laser sealing method of glass and a kovar alloy. The method comprises the following steps: S1, setting a processing track according to dimension and shape of glass and kovar alloy needed to be sealed, and preparing a welding clamp; S2, performing a pre-stage sealing purifying pre-treatment operation on the glass and kovar alloy and providing Ag-Cu-Ti power or an Ag-Cu-Ti foil as welding flux; S3, uniformly spraying the welding flux in the S2 to the peripheral edges of the kovar alloy to be sealed, and placing the to-be-sealed glass on the kovar alloy; S4, clamping the to-be-sealed body by the welding clamp as required; S5, setting laser processing parameters, wherein a laser performs laser irradiation on the welding flux at the boundary of the glass and the kovar alloy according to the set processing track to prepare a glass-kovar alloy sealing body; and S6, disassembling the welding clamp. The method provided by the invention fully solves the problem that the connecting strength between the glass the kovar alloy is not high, and meanwhile, the sealing body which is high in connecting strength is prepared.

Description

technical field

[0001] The invention relates to the technical field of sealing of heterogeneous materials, in particular to a laser sealing method of glass and Kovar alloy, and a sealing body prepared by the method. Background technique

[0002] Insulating glass is composed of two or more layers of flat glass. The edges are sealed with composite adhesive strips, or the edges are sealed with aluminum butyl glue and polysulfide glue, and two or more pieces of glass are bonded to sealing strips and glass strips. , sealed, and filled with dry static gas in the middle to ensure the dryness of the air between the glass sheets. When the spacer is a gas, the gas may be air, an inert gas, or the like. Insulating glass is widely used because of its thermal insulation and sound insulation.

[0003] Based on the structure of the above insulating glass, glass can also be combined with Kovar alloy to form a glass-Kvar metal seal. Kovar alloy, also known as iron-nickel-cobalt alloy, has...

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