Preparation method of explosion composite pipe rod in vacuum environment

Abstract

The invention provides a method for preparing an explosive composite pipe rod in a vacuum environment. The method comprises the following steps: coaxially arranging a metal bar 1, a metal pipe 2, a pvc pipe 5-1, a pvc pipe 5-2, a metal pipe 3 and a metal pipe 4 from inside to outside; explosive cladding explosives and detonators are filled between the pvc pipe 5-1 and the pvc pipe 5-2 to form an explosive device; filling water between the to-be-compounded pipe and the explosive device to construct a water environment; placing the to-be-compounded material, the explosive device and the water environment into a vacuum tank integrally, and vacuumizing to construct a vacuum environment; and detonating the explosive device to firmly weld the metal material to obtain two groups of high-quality explosive composite pipes and composite rods. According to the preparation method of the explosive composite pipe rod, the large-area melting phenomenon, caused by adiabatic compression of an air layer, of a material bonding surface in the welding process is eliminated, and a new thought is provided for welding work in special operation scenes such as the space environment and the underwater environment; the difficulty that high-quality machining of thin-wall materials cannot be achieved through a traditional method is effectively solved.

Description

technical field [0001] The invention belongs to the field of explosive welding and relates to a method for preparing explosive composite pipe rods in a vacuum environment. Background technique [0002] Explosive welding is a solid-state welding process that utilizes the high pressure generated by explosive explosion to metallurgically bond several identical or different metals. Explosive welding is often used in the metal manufacturing and processing industry to produce various multi-metal composite materials with a wide range of uses. In terms of reducing production costs and improving product quality, explosive welding has incomparable advantages over traditional metal cladding methods. Bimetal composite pipes and rods produced by explosive welding technology are commonly used high-quality composite materials, which can not only keep the original properties of the metal materials unchanged, but also integrate different advantages such as strong corrosion resistance, high s...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the application of explosive welding to prepare composite materials is mainly focused on the one-time preparation of single-group composite materials under normal pressure, which not only has a low utilization rate of explosive energy, but also makes it difficult to process some extremely thin metal pipes. The air gap between them will also affect the bonding quality of the composite material to a certain extent.

When the pressure environment changes, such as underwater environment, space environment, etc., the traditional explosive welding method loses its universality

Images