In-situ rapid self-propagating heating refractory metal explosive welding device and process

Abstract

The invention discloses an in-situ rapid self-propagating heating refractory metal explosive welding device and process. The explosive welding device comprises a self-propagating heating container, an excitation circuit, a refractory metal assembly and a detonator. The self-propagating heating container is arranged under a refractory metal explosive welding part, the excitation circuit is electrically connected with the self-propagating heating container, and the detonator is arranged at one side of the refractory metal assembly; the excitation circuit is used for generating instant high temperature to trigger self-propagating reaction; the self-propagating heating container is used for heating the refractory metal assembly after a self-propagating reaction is generated; and after the refractory metal assembly is heated and softened, the detonator is detonated for explosive welding. The purpose of in-situ heating of the refractory metal can be achieved.

Description

technical field [0001] The invention relates to the technical field of refractory metal explosive welding, in particular to an in-situ rapid self-propagating heating refractory metal explosive welding device and process. Background technique [0002] Tungsten and molybdenum are typical refractory metals. They have the characteristics of high temperature resistance and corrosion resistance. They are excellent protective materials. They are usually combined with other metals (such as copper, steel, etc.) to make the metal layered composite materials both protective and high heat. Conductivity (or high strength, etc.) characteristics. For example, in the International Thermonuclear Experimental Reactor project (ITER), the tungsten-copper laminated composite plate material is considered to be the most promising candidate material for plasma-facing high heat flux components. However, the miscibility between layers of materials in the above-mentioned layered composite materials i...

AI Technical Summary

Problems solved by technology

In the case of stable power supply, the electric heating method can continue heating before explosive welding, and can control the temperature of the heated metal before explosive welding, but there are problems such as low heating efficiency

The advantage of electric furnace heating is that the metal can be heated to a very high temperature, but it needs to be transferred to the explosive welding site after heating the metal, which has a long cooling time, and it is difficult to control the temperature of the heated metal before explosive welding

The method of acetylene flame heating avoids the disadvantage of inconvenient use of electric power at the explosive welding site, and can be directly heated at the explosive welding site, but it also has the problems of difficulty in controlling the heating temperature and poor reliability

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