Preparation method of thin multi-layer explosive welding composite board in vacuum environment

Abstract

The invention provides a method for preparing a thin composite layer explosive welding composite board in a vacuum environment, which comprises the following steps of: putting an explosive welding device in a vacuum device through a cutting board, arranging a base plate, a plurality of support columns and a thin composite board from bottom to top, and tightly attaching a buffer plate to the upper edge of the thin composite board. Explosive is laid on the buffer plate, a detonator is connected in the buffer plate, and a detonating cord is connected outside the vacuum device through the vacuum device. And the explosive welding device is detonated in the vacuum environment, the thin composite plate is welded to the base plate through the buffer plate under the high pressure of explosive explosion, and preparation of the composite plate is completed. Compared with a traditional preparation method, the method for preparing the composite plate through thin composite layer explosive welding is higher in success rate, and ablation damage to the surface of the thin composite plate caused by direct contact of explosives and the thin composite plate can be effectively prevented; the conditions that bulges are caused by air, brittle intermetallic compounds are generated, the bonding strength is low and even welding fails are avoided; the detonation velocity of the explosive is selected more freely, and the operability is higher; and the influence of vibration and noise on the surrounding environment can be obviously reduced.

Description

technical field [0001] The invention belongs to the field of explosive welding and relates to a method for preparing a thin clad explosive welding composite plate in a vacuum environment. Background technique [0002] Explosive welding generally adopts the open-air method, and there are many disadvantages in open-air explosive welding: [0003] 1. The amount of explosives required for explosion in a relatively vacuum environment is larger, the cost is higher, and the noise pollution is serious; [0004] 2. Brittle intermetallic compounds will be formed at the junction of the matrix and the composite board, which will affect the bonding quality; [0005] 3. The venue is generally far away from the crowd, which increases the transportation cost of raw materials and finished products; [0006] Nevertheless, the explosion shock wave, ground vibration, noise, etc., have a great destructive effect on surrounding villages, mountains and vegetation. With the rapid development o...

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Problems solved by technology

[0004] 2. Brittle intermetallic compounds will be formed at the junction of the matrix and the composite board, which will affect the bonding quality;

[0005] 3. The venue is generally far away from the crowd, which increases the transportation cost of raw materials and finished products;

[0007] As one of the commonly used methods for preparing composite multi-metal composite materials, explosive welding not only has the advantages that other conventional composite technologies cannot match, but also has some shortcomings that need to be solved urgently: there are many problems in the traditional explosive welding of thin double panels. The problem is that due to the lighter weight of the thin doubler board, it can collide with the substrate more quickly, and cannot squeeze out all the air between the base doubler boards; and because the thickness of the doubler board is too small, it is easy to deform, tremble, etc., resulting in the appearance of the composite board. Problems such as bulging, low bonding rate and welding failure

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