Composite metal structure with interlayer core material and preparation method thereof

Abstract

The invention provides a composite metal structure with an interlayer core material and a preparation method of the composite metal structure, the composite metal structure sequentially comprises an outer skin, the interlayer core material and an inner skin from outside to inside, and the interlayer core material is formed by mutually clamping and matching two sawtooth-shaped panels; the smooth side of each sawtooth-shaped panel is fixedly connected with the inner side of the corresponding outer skin and the inner side of the corresponding inner skin, and the space between the two sawtooth-shaped panels is filled with foam metal materials. According to the composite metal structure, certain impact resistance and sound insulation and noise reduction characteristics can be achieved through the interlayer core material, and better sound insulation performance and electromagnetic wave absorption characteristics are achieved through the foam metal structure bonded between the two sawtooth-shaped panels; and due to the porous structure of the foam metal, the foam metal has excellent impact resistance and energy absorption characteristics when bearing pressure, and can be used for solvingthe problems of sound insulation, noise reduction, impact resistance and the like in the high-speed running process of a train. The preparation method is simple to operate and suitable for industrialproduction.

Description

technical field [0001] The invention relates to the technical field of composite metal structure preparation, in particular to a composite metal structure with a sandwich core material and a preparation method thereof. Background technique [0002] The sound insulation boards on the existing high-speed trains are generally made of multi-layer boards glued together, but the composite boards made of glued boards have the disadvantages of heavy weight, low strength, and low service life, which restrict the development of high-speed trains. Therefore, it is necessary to improve the plywood on the existing high-speed train, and select a new type of composite plate to replace the existing plywood. [0003] The existing aluminum honeycomb composite panel is composed of two aluminum panels and an aluminum honeycomb core, and has been well used in aviation, aerospace and other fields. However, when this aluminum honeycomb composite panel is applied to high-speed trains, although it ...

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Problems solved by technology

[0003] The existing aluminum honeycomb composite panel is composed of two aluminum panels and an aluminum honeycomb core, and has been well used in aviation, aerospace and other fields. However, when this aluminum honeycomb composite panel is applied to high-speed trains, although it can reduce the overall weight of the train to a certain extent, it cannot meet the requirements of trains running at high speeds in terms of sound insulation and noise reduction.

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