Method for assisting in improving glass welding strength through high-vacuum magnetron sputtering interface

Abstract

The invention discloses a method for assisting in improving the glass welding strength through a high-vacuum magnetron sputtering interface, which is stable in welding quality, good in welding seam appearance, and high in welding yield. According to the technical scheme, a total reflection mirror with a 45-degree inclined plane is arranged at the front end of a high-repetition-frequency ultrafast laser, and a reverse U-shaped light path is formed by a splayed overlooking total reflection mirror which is distributed in a 45-degree inclined mode and is in mirror symmetry; the ultra-short pulse light beam is transmitted to the tail end of the reverse U-shaped light path through the total reflection mirror to overlook the total reflection mirror by 45 degrees, is transmitted to a diaphragm, adjusts the size of a light spot through the diaphragm, and is focused to an interface of two overlapped glass sheets to be welded on a positioning clamp of an electric control three-dimensional motion platform through a lens, the laser beam penetrates through a metal film clamped between the upper to-be-welded glass laminated glass sheet and the lower to-be-welded glass laminated glass sheet, generated peak cone light filaments pass through a preset two-dimensional scanning track, a molten pool with a nonlinear absorption effect is generated on a focus interface of the scanning track of the metal film, and a compact welding seam is formed after cooling.

Description

technical field [0001] The invention belongs to the technical field of laser welding, and relates to a laser welding system which utilizes a special laser beam as a local thermal processing process as a heat source and deposits a nanometer-thick film on a glass surface by high-vacuum magnetron sputtering to improve welding strength. Background technique [0002] With the development of microelectromechanical systems (MEMS), new sensors, aerospace and other fields, these fields often need to connect glass components together. In addition, it can reduce Fresnel reflection, seal the supercontinuum air holes generated in the micro-structured optical fiber, and avoid their further degradation due to the diffusion of hydroxyl groups in the glass; in the preparation When making microfluidic chips, for complex three-dimensional microfluidic channels, micro grooves can be etched in each piece of glass, and then multiple pieces of glass are connected together to form a three-dimension...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects that traditional lasers cannot directly weld transparent materials such as glass, and the problems of low welding strength, unstable welding quality, poor weld quality and low energy absorption rate when welding with ultra-fast laser

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