Method for preparing explosive composite rod based on water pressure in local vacuum environment

Abstract

The invention provides a method for preparing an explosive composite rod based on water pressure in a local vacuum environment. The method comprises the steps that a to-be-composited rod, a to-be-composited pipe, a small-size pvc pipe and a large-size pvc pipe are coaxially arranged from inside to outside; the two ends of a gap between the to-be-composited rod and the to-be-composited pipe are sealed by sealing strips, vacuumizing is carried out, and a vacuum gap environment is constructed; space between the small-size pvc pipe and the large-size pvc pipe is filled with an explosive and a detonator to form an explosive device; space between the to-be-composited pipe and the explosive device is filled with water, and a water environment is constructed; and the explosive device is detonated to enable the to-be-composited pipe and the to-be-composited rod to be welded and combined, and the high-quality explosive composite rod is obtained. According to the method for preparing the explosive composite rod based on the water pressure in the local vacuum environment, the problem that high-quality machining of a thin-wall material cannot be achieved through a traditional method is effectively solved; and the phenomenon that large-area melting of the bonding interface of composite materials is caused by an air layer which is not emptied in a gap is eradicated, and size selection of to-be-composited materials is freer.

Description

technical field [0001] The invention belongs to the field of explosive welding and relates to a method for preparing explosive composite rods based on water pressure in a partial vacuum environment. Background technique [0002] The working principle of explosive welding is to use the impact force generated by explosive explosion to accelerate the cladding material, so that the cladding material and the base material collide at high temperature and high speed to achieve metallurgical bonding of metal materials. The biggest feature of explosive welding is that it can firmly weld and combine most metal materials in a very short time to produce bimetallic composite materials with a wide range of uses. It belongs to an advanced manufacturing process that can prepare multi-metal composite materials. [0003] Bimetallic composite materials perfectly integrate the chemical and mechanical advantages of different metals, and bimetallic composite rods combine the advantages of differe...

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Problems solved by technology

[0006] The invention provides a method for preparing explosive composite rods based on water pressure in a partial vacuum environment. The purpose is to eliminate the negative impact of the difficult-to-discharge air layer in the gap on the explosive welding production of composite rods, and at the same time solve the problem of explosives and composite rods in the production process. Ablative damage on the surface of composite rods caused by direct contact of pipes

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