A controllable explosion welding method for laser-induced thermal decomposition of energetic working medium

Abstract

The invention relates to a controllable explosive welding method through laser-induced thermal decomposition of an energy-containing working medium. The method comprises the steps of (1), setting an operation table, wherein the operation table is provided with a substrate, a thin sheet or a film-shaped metal compound plate and an energy-containing working medium box in sequence from bottom to top, a gap exists between the substrate and the compound plate, and the energy-containing working medium box is a frame-shaped structure composed of four side surfaces; (2), filling the energy-containing working medium box with the energy-containing working medium, wherein the energy-containing working medium covers the upper surface of the compound plate; (3), applying focused laser energy on the energy-containing working medium, inducing the thermal decomposition of the energy-containing working medium, generating shock waves so as to drive the compound plate to move towards the substrate at a high speed, and conducting high-speed collision along the track, between the substrate and the compound plate, of laser beams so as to achieve welding. The controllable explosive welding method can achieve non-integral surface-surface and line-line welding between the thin sheet (film) compound plate and the substrate, and provides the solution for the connection between the thin sheet (film) and the substrate which are of honeycomb structures, interlayer conductive enhanced nanowires and arranged between electronic packaging interfaces.

Description

technical field [0001] The invention belongs to the technical field of compounding of thin metal strips and substrates, and is a key technology for precise control of the compounding of thin metal strips and substrates. Specifically, it relates to a controllable explosive welding method for laser-induced thermal decomposition of energetic working fluids. Background technique [0002] Explosive welding (explosive welding) is a solid-phase welding method, which uses the impact force generated by the explosion of explosives to cause rapid collision of weldments to realize the connection of weldments. The weld is formed between two or more layers of the same or different metal materials. It is usually used for welding between dissimilar metals, such as titanium, copper, aluminum, steel and other metals, and can obtain high-strength welded joints. The welding of these metal materials with different chemical compositions and physical properties is difficult to achieve with other w...

AI Technical Summary

Problems solved by technology

However, with the development of industrial technology, higher requirements are put forward for structural materials, and the preparation of explosively welded metal composite panels is usually carried out in the field, which has poor process controllability, is greatly affected by climate and environment, and has many constraints. The disadvantages of weak uniformity of material quality, low composite yield for precious metals, etc., and it is not suitable for continuous production, and it is difficult to implement micro-scale composite preparation, which limits the promotion of explosive welding technology

[0004] In view of this, the present invention aims to develop a laser-induced energetic working substance thermal decomposition controllable explosive welding method, which can move the explosive welding preparation site from the field to the workshop. There are many factors, such as poor controllability and precision. On the other hand, it has the advantages of high production efficiency, line-line, surface-surface large-scale connection and fast speed.

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