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Explosive composite pipe preparation method based on implosion method in local vacuum environment

A technology of partial vacuum and composite pipe, which is applied in welding equipment, manufacturing tools, non-electric welding equipment, etc.

Inactive Publication Date: 2022-01-14
ANHUI UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The invention provides a method for preparing explosive composite pipes based on the implosion method in a partial vacuum environment, aiming to solve some problems existing in the current explosive composite pipes

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  • Explosive composite pipe preparation method based on implosion method in local vacuum environment
  • Explosive composite pipe preparation method based on implosion method in local vacuum environment

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Embodiment Construction

[0014] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] Provided in conjunction with the accompanying drawings, a method for preparing an explosive composite pipe based on an implosion method in a partial vacuum environment includes the following steps:

[0016] 1) Coaxially arrange the to-be-composited pipe 1, the to-be-composited pipe 2, and the pvc pipe 3-1 in order from the outside to the inside;

[0017] 2) filling the pcv tube 3-1 with a charge column made of a detonator and explosives to form an explosive device 3 for pipes to be welded;

[0018] 3) sealing and vacuumizing both ends of the gap between the pipe to be composited 1 and the pipe to be composited 2 with a sealing strip to form a vacuum gap environment 4;

[0019] 4) Detonate the explosive device, use the high pressure generated by the explosive explosion to firmly weld the composite material to obtain a bim...

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Abstract

The invention provides an explosive composite pipe preparation method based on an implosion method in a local vacuum environment. The explosive composite pipe preparation method comprises the following steps: a to-be-composited pipe 1, a to-be-composited pipe 2 and a pvc pipe are coaxially arranged in sequence from outside to inside; the pcv pipe is filled with a grain made of a detonator and explosive, and an explosive device of the to-be-welded pipes is formed; the two ends of a gap between the to-be-composited pipes are sealed by using sealing strips and vacuumized, and a vacuum gap environment is formed; and the explosive device is detonated, and to-be-composited materials are welded by utilizing high pressure generated by explosive explosion to obtain the explosive composite pipe. Compared with a traditional preparation method, the explosive composite pipe preparation method has the following advantages: higher energy utilization rate of the explosive, freer selection for the detonation velocity and higher operability are achieved; the phenomenon of large-area melting of a composite interface caused by insufficient discharge of a gap air layer in the traditional preparation method is completely eradicated; and the energy utilization rate of the explosive is effectively increased, and the production cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of explosive welding and relates to a method for preparing an explosive composite pipe based on an implosion method in a partial vacuum environment. Background technique [0002] Explosive welding is the process of using the energy released by the explosion of explosives to drive two metal plates to collide at high speed to achieve their metallurgical bonding. Its biggest feature is that it can quickly and firmly weld most of the same or different metal materials in a very short time. Together, a composite plate or pipe with multiple metal properties is produced, which greatly expands the performance and application range of existing metals. Explosive welding has many advantages that cannot be compared with traditional processing techniques. It can weld any two metals, such as lead and aluminium, which have a large difference in melting point, and copper and steel, which have a large difference in thermal expansion co...

Claims

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Application Information

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IPC IPC(8): B23K20/08
CPCB23K20/085
Inventor 缪广红胡昱汪泉艾九英祁俊翔马秋月孙志皓
Owner ANHUI UNIV OF SCI & TECH
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