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A method for explosive welding of tungsten foil

A technology of explosive welding and explosives, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve problems such as infeasibility, prevent fracture and surface damage, avoid ablation and damage, and prevent fracture and ablation. Effect

Active Publication Date: 2022-04-01
UNIV OF SCI & TECH OF CHINA +1
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Problems solved by technology

However, there is no report on the successful preparation of tungsten coatings by explosive welding in the normal temperature and atmospheric environment, and the preparation of non-destructive tungsten coatings by the normal temperature explosive welding process in air was once considered infeasible.

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  • A method for explosive welding of tungsten foil
  • A method for explosive welding of tungsten foil
  • A method for explosive welding of tungsten foil

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] In traditional welding, no bonding material 4 (such as double-sided tape bonding) is used to bond the protective plate 3 and the cover plate 5 , the cover plate is tungsten foil, and the base plate 7 and the cutting board 8 are bonded together. Therefore, the foil material is often smashed by explosives after welding. By bonding the tungsten foil, the substrate and the protective plate 3 (made of aluminum, copper, etc.), the welding of the tungsten foil and the metal plate of 0.05mm-0.4mm can be realized after using the protective plate. The difficulty of the process is that the foil material used cannot be explosively welded intact, because the ablation and shock wave after the explosion of the explosive will destroy the material. In the present invention, the tungsten foil is glued to the protective plate, which can avoid ablation and...

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Abstract

The invention discloses a method for explosive welding of tungsten foil. The method comprises: providing a method of explosive welding that can realize explosive welding of tungsten under normal temperature and atmospheric environment (that is, without heating material or underwater environment) by means of explosive welding. , but it is also compatible and can be used together) to avoid damage to the cladding (tungsten foil) caused by the instantaneous high temperature and impact force during conventional explosive welding. The protective plate effectively prevents the tungsten foil from breaking and ablation, and realizes (5) Intense metallurgical bonding with the metal substrate. In the present invention, the cladding plate (5) and the protective plate (3) are bonded and fixed by the adhesive material (4) and then explosively welded to realize a dense metallurgical bond between the cladding plate and the metal substrate without the influence of high temperature during the process. At the same time, it effectively prevents the cracking and surface damage of the cladding plate and the substrate, and maintains the overall integrity and surface quality of the tungsten-clad composite plate.

Description

technical field [0001] The invention relates to the composite of tungsten foil and other metals, relates to the technical field of explosive welding, in particular to a method for explosive welding of tungsten foil. Background technique [0002] Tungsten cladding materials are used as high-voltage electrical transmission contacts, rocket nozzle components and nuclear fusion reactors. Tungsten has excellent high-temperature mechanical properties and excellent physical properties under irradiation, which can complement the properties of other metals. For example, copper has excellent electrical and thermal conductivity. In the International Thermonuclear Experimental Reactor Tokamak nuclear fusion device (ITER), the combination of tungsten and copper is considered to be the best choice for components in plasma-facing materials (PFM). promising candidate. However, the melting point of tungsten (about 3400°C) is much higher than that of other metal materials (for example, copp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/08B23K20/16B23K20/24B23K20/26
CPCB23K20/08B23K20/16B23K20/24B23K20/26
Inventor 马宏昊田启超沈兆武王晓明赵阳滕涛李壬栋
Owner UNIV OF SCI & TECH OF CHINA
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