Method for cladding metal entities on mesh module by means of wires

Abstract

In the wire additive forming process, by means of the excellent characteristics of high energy density, high directivity and accurate control of an electron beam machining heat source, energy distribution of electron beams on the surface of original cladding metal and the surface of a mesh module can be accurately controlled through control of the inclination angle of the mesh module in a vertical plane and control of heat input and the feeding number of wires, and the original mesh and a catalyst coating structure thereof are not damaged while the molten metal liquid and the mesh module are metallurgically bonded. The method comprises the steps that the mesh module is arranged between two plugs, and the mesh module and the two plugs are fixedly connected together; the wires are melted to complete a cladding metal entity of a layer of metal mesh; accumulating and cladding of the metal entities are performed layer by layer until the mesh module and the two plugs are connected into an integrated mesh assembly; and the two plugs of the mesh assembly are removed, then the metal entities formed through cladding are machined to be in the needed size, and cladding of the metal entities on the mesh module is completed.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method for cladding metal entities on mesh modules with wire materials. Background technique [0002] In the chemical industry, various catalysts are commonly used to increase the reaction efficiency during chemical reactions. The catalytic effect of the catalyst is directly related to the contact surface between the catalyst and the solution to be reacted. In order to improve the actual use efficiency of the catalyst, the catalyst is often attached to the metal mesh structure in the form of coating, and stacked together layer by layer. When the solution to be reacted flows through the multi-layer mesh structure, it can play a good role in catalysis. Effect. In practical applications, the metal mesh with the catalyst attached is usually fixed in the pipeline, and the solution to be reacted quickly passes through the mesh assembly formed by stacking the metal mes...

AI Technical Summary

Problems solved by technology

[0008] The main problem of laser coaxial powder feeding is that the powder particles will remain inside the mesh assembly during forming, which is difficult to clean. At the same time, the energy density of the laser coaxial powder feeding process is low, and the surface tension of the molten metal formed after the powder material is melted is relatively high. Large, easy to gather into drops, difficult to spread out to form a flat and effective molten pool, and difficult to form

[0009] The arc fuse avoids the harm caused by powder due to the use of wire forming, but because the arc energy density is low and the arc has the characteristics of arc discharge, and the surface of the metal mesh module is not smooth, the discharge electrode is easy to fall on the mesh module. Occurs between the wire or tungsten electrode, which burns the metal mesh itself, making it difficult to form

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