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Method for preparing explosive composite pipe in local vacuum environment

A partial vacuum, composite tube technology, used in manufacturing tools, welding equipment, tubular items, etc., to solve problems such as impact

Pending Publication Date: 2021-08-10
ANHUI UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0004] The invention provides a method for preparing explosive composite pipes in a partial vacuum environment, the purpose of which is to solve the influence of the air in the gap on the production of composite pipes by explosive welding

Method used

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  • Method for preparing explosive composite pipe in local vacuum environment
  • Method for preparing explosive composite pipe in local vacuum environment

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Embodiment Construction

[0012] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] Provided in conjunction with the accompanying drawings, a method for preparing an explosive composite pipe in a partial vacuum environment comprises the following steps:

[0014] 1) Coaxially arrange the first pipe to be composited 1, the second pipe to be composited 2, and the pvc pipe 3-1 from the inside to the outside, and fill the gap between the pvc pipe 3-1 and the second pipe to be composited 2 with explosives and detonators, Explosive device 3 constituting the pipes to be welded;

[0015] 2) sealing and vacuumizing both ends of the gap between the first to-be-composited pipe 1 and the second to-be-composited pipe 2 with a sealing strip to form a vacuum gap environment 4;

[0016] 3) Detonating the explosive device 3, using the high pressure generated by the explosion of the explosive to weld and combine the pipes...

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Abstract

The invention provides a method for preparing an explosive composite pipe in a local vacuum environment. The method comprises the following steps of: coaxially arranging a first to-be-composited pipe, a second to-be-composited pipe and a pvc pipe from inside to outside, and filling explosive and a detonator between the pvc pipe and the second to-be-composited pipe to form an explosive device of a to-be-welded pipe; sealing the two ends of a gap between the first to-be-composited pipe and the second to-be-composited pipe by using sealing strips, and vacuumizing to form a vacuum gap environment; and detonating the explosive device, and welding and combining the to-be-composited pipes by utilizing high pressure generated by explosion of the explosive to obtain the high-quality explosive composite pipe. According to the method for preparing the explosive composite pipe in the local vacuum environment, the phenomenon that in a traditional preparation method, large-area melting of a composite pipe bonding interface occurs due to the fact that gap air is not exhausted in time is effectively eradicated; the bonding strength of the explosive composite pipe is obviously improved; and compared with a traditional explosive welding method which needs to consider gap exhaust, the method has the advantage that the explosive velocity of the explosive can be selected more freely.

Description

technical field [0001] The invention belongs to the field of explosive welding and relates to a method for preparing an explosive composite pipe in a partial vacuum environment. Background technique [0002] Explosion welding is a solid-state welding process that utilizes the high pressure generated by the explosion of explosives to metallurgically bond several metals of the same or dissimilar nature. Explosive welding has been widely used in the manufacturing industry. It is characterized by the ability to produce a wide variety of bimetallic and even multimetal composite materials with high quality welding products and relatively low production costs. Bimetal composite pipe is a commonly used high-quality composite material. It not only ensures the physical and chemical properties of the original metal material, but also integrates different advantages such as strong corrosion resistance, high strength, and good plasticity. Therefore, bimetal composite pipes are widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08B23K101/06
CPCB23K20/085B23K2101/06
Inventor 缪广红胡昱黄少敏艾九英祁俊翔李亮
Owner ANHUI UNIV OF SCI & TECH
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