Method for preparing explosive composite tube by implosion method based on water pressure in local vacuum environment

Abstract

The invention provides a method for preparing an explosive composite pipe by an implosion method based on water pressure in a local vacuum environment. The method comprises the following steps: sequentially and coaxially arranging a pvc pipe, a metal pipe 2 and a metal pipe 3 from inside to outside; the pcv tube is filled with a detonator and explosive, and an explosive device is manufactured; filling water between the metal pipe 2 and the explosive device to construct a water environment; the two ends of the gap between the metal pipes 2 and 3 are sealed and vacuumized through sealing strips, and a local vacuum environment is formed; and the explosive device is detonated, the metal pipe is welded through high temperature and high pressure generated by explosive explosion, and the high-quality bimetal explosion composite pipe is obtained. According to the invention, the damage to the pipe caused by high temperature generated by explosive explosion is effectively avoided, and the compounding of the thin-wall pipe can be realized; the phenomenon of large-area melting of a composite interface caused by insufficient discharge of a gap air layer in a traditional preparation method is avoided; and the energy utilization rate of the explosive is higher, the selection of the detonation velocity is more free, and the operability is higher.

Description

technical field [0001] The invention belongs to the field of explosive welding, and relates to a method for preparing an explosive composite pipe by an implosion method based on hydraulic pressure in a partial vacuum environment. Background technique [0002] The bimetal composite pipe made of different metals combines the advantages of different materials such as high strength, corrosion resistance, and strong plasticity, so it is widely used in chemical plants, oil exploration, aerospace and other industrial fields. Traditional composite pipe preparation methods have certain limitations, and explosive welding, as one of the research fields at the forefront of science today, is widely used in the production and preparation of composite metal materials. The so-called explosive welding is a welding method that uses the energy released by the explosion of explosives to drive two metal plates to collide at high speed to achieve their metallurgical bonding. Because it can weld ...

AI Technical Summary

Problems solved by technology

[0003] Although explosive welding has the advantages of low cost, high efficiency, and fast speed, in traditional explosive welding, it is difficult to discharge the air layer in the gap in time and completely during the explosive welding process, which reduces the bonding of materials to be welded. quality, on the other hand, it is possible to lose the bonding ability between the base layer and the clad material

In addition, the high temperature generated by the explosion of explosives in traditional explosive welding often causes ablation damage to the surface of the directly bonded composite pipes, affects product quality, and brings serious secondary pollution such as dust and noise.

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