Method for preparing high-efficiency explosion composite pipes and rods based on water pressure in local vacuum environment

Abstract

The invention provides a method for preparing high-efficiency explosion composite pipes and rods based on water pressure in a local vacuum environment. The method comprises the following steps: coaxially arranging a to-be-composited rod 1, a to-be-composited pipe 2, small-size and large-size pvc pipes and to-be-composited pipes 4 and 5; enabling the position between the small-size pvc pipe and the large-size pvc pipe to be filled with explosives and detonators to form an explosive device; sealing and vacuumizing the two ends of gaps between the to-be-composited rod 1 and the to-be-composited pipe 2 and between the to-be-composited pipes 4 and 5 by using sealing strips to construct a vacuum gap environment; injecting water between the to-be-composited pipes and the explosive device to construct a water environment; and starting the explosive device to weld and combine the to-be-composited materials to obtain the explosion composite pipes and composite rods. According to the method for preparing the explosion composite pipes and rods, the phenomenon that a composite material bonding interface is melted in a large area due to an air layer which is not emptied in the gaps is avoided, the utilization rate of the explosives is increased, and the difficulty that a thin-wall material cannot be machined in a high-quality manner 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 a high-efficiency explosive composite pipe rod based on water pressure in a partial vacuum environment. Background technique [0002] Explosive welding is an advanced manufacturing process that can prepare multi-metal composite materials. Its working principle 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 combine the metal materials. The biggest feature of explosive welding is that it can weld and combine different types of metal materials firmly in a very short time to produce multi-metal composite materials with a wide range of uses. The so-called multi-metal composite material refers to a composite material made of two or more different metals with high mechanical properties. For example, multi-metal composite...

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Problems solved by technology

[0005] The invention provides a method for preparing a high-efficiency explosive composite pipe and rod based on water pressure in a partial vacuum environment. The purpose is to solve the ablation damage on the surface of the composite material caused by the direct contact between the explosive and the pipe to be composited during the production process, and at the same time eliminate the air in the gap. Negative effects of layers during explosive welding

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