Composite all-welded aluminum honeycomb core waveguide window and production process thereof

Abstract

The invention discloses a composite all-welded aluminum honeycomb core waveguide window, which includes a flange, wherein the upper end of the flange is provided with two honeycomb cores. A productionprocess of the composite all-welded aluminum honeycomb core waveguide window includes the following steps: S1, calculating a waveguide depth according to an electromagnetic field shielding performance requirement required by a customer. According to the requirements for shielding performance of electric and magnetic fields of different individual frequency bands or high and low frequency bands, the process selects welded aluminum honeycomb cores with different waveguide depths, side lengths and thicknesses; can adjust the hexagonal side length and spacing of a punched plate according to different shielding performance; and can replace the material of the intermediate punched plate according to different shielding performance, by materials such as by low-carbon steel, copper and the like.The number of interlayers of the intermediate punched plate is determined according to different shielding requirements. The overall high and low frequency magnetic field shielding performance is significantly improved, the product application range become extensive, and the electromagnetic shielding effectiveness of the equipment and the shielding room is solved and an ventilation and heat dissipation effect is achieved.

Description

Technical field [0001] The invention relates to the technical field of electromagnetic protection, in particular to a composite fully welded aluminum honeycomb core waveguide window and a production process thereof. Background technique [0002] In order to maintain the air circulation in the shielded room or computer room, it is necessary to open a window on the shielded room or shielded shell. This window is the main channel for shielding the indoor air to exchange with the outside world, and can effectively stop the passage of electromagnetic waves. This window is called Make a waveguide window. The venting waveguide window is a cut-off waveguide bundle composed of many small cut-off waveguides, and its cross-sectional shape is hexagonal. The cross-sectional form of the ventilation cutoff waveguide window usually has the following types: round, square and hexagonal. Since square and hexagonal waveguides allow less propagation than circular waveguides, they are more advantage...

AI Technical Summary

Problems solved by technology

However, in the actual occasions with high electric and magnetic field shielding requirements, often a single type of metal material cannot meet the requirements. At present, waveguide windows of a single material are used in the market, such as aluminum or steel.

[0004] The outstanding problem of using aluminum honeycomb cores in aluminum waveguide windows is that the honeycomb cores mostly use glued honeycomb structures, which have poor shielding performance, short service life, and limited applications; while steel honeycomb cores have poor anti-corrosion performance and are prone to rust and oxidation. , affecting the service life

As far as the aluminum honeycomb core waveguide window is concerned, since aluminum is a material with high electrical conductivity, it has the effect of shielding both electric field and high-frequency magnetic field, but the easy oxidation of aluminum makes its welding difficult to achieve, so the shielding requirements are high. It is difficult for the application to meet customer requirements

[0005] If the welding between the aluminum honeycomb cores and the metallurgical connection between the aluminum honeycomb core and the window frame can be solved, and high magnetic permeability materials such as iron and low carbon steel are added at the same time, this will not only solve the non-metallurgical connection between the aluminum honeycomb cores Reduce the problem of shielding effectiveness, improve the electrochemical corrosion resistance of the product, and also significantly improve the overall high and low frequency electromagnetic field shielding effectiveness of the product, and the product application range will become wider and wider. However, in the actual occasions with high electromagnetic field shielding requirements, there is often a single type Metal materials cannot meet its requirements, so we consider choosing a combination of metals containing high magnetic permeability materials and high electrical conductivity metals to solve this problem, and propose a composite fully welded aluminum honeycomb core waveguide window and its production process to solve the above problems

Images