Metal composite plate

Abstract

The utility model relates to the technical field of composite plates, and discloses a metal composite plate, which comprises an inner base body layer, an outer base body layer and an outer base body layer, the outer functional layer comprises an upper part and a lower part and wraps the inner matrix layer; the transition layer is located between the inner matrix layer and the outer functional layer, a bionic honeycomb microstructure is arranged in the foam steel, the outer functional layer is made of high-strength aluminum alloy, and the transition layer is of a gradient structure. By means of the transition layer of the gradient structure and the bionic honeycomb micro-texture design of the foam steel, the compatibility of dissimilar metal interfaces is improved, and high-precision customized production of the composite board is achieved by combining the additive manufacturing technology such as cold spraying and laser cladding with a multi-target performance optimization algorithm.

Description

TECHNICAL FIELD

[0001] The utility model relates to a composite board technical field more specifically relates to a metal composite board. BACKGROUND

[0002] Metal composite board is a kind of structured laminate by combining two or more metal / alloy materials, is widely used in aerospace, automobile lightweight, shipbuilding and new energy equipment etc., traditional single metal material has performance limitation, for example, aluminum alloy lightweight but insufficient strength, titanium alloy corrosion resistance but high cost, steel high strength but big density etc.

[0003] Although existing composite board technology can realize dissimilar metal combination, there are still interlayer microcracks, oxide inclusions or residual stress, leading to fatigue life decline and other problems. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned defects of prior art, the utility model provides a metal composite board to solve the problems in the above background art.

[0005] The utility model provides the following technical scheme: a metal composite board, comprising:

[0006] Inner layer matrix layer: composed of foamed steel;

[0007] Outer layer functional layer: is two parts, and forms the package to inner layer matrix layer;

[0008] Transition layer: between inner layer matrix layer and outer layer functional layer.

[0009] As a further scheme of the utility model, the foamed steel is internally provided with bionic honeycomb microtexture.

[0010] As a further scheme of the utility model, the microtexture depth of bionic honeycomb microtexture is 15-35 μm, and the interval is 0.2-0.3 mm.

[0011] As a further scheme of the utility model, the outer layer functional layer is composed of high-strength aluminum alloy.

[0012] As a further scheme of the utility model, the outer layer functional layer thickness is 0.5-2 mm.

[0013] As a further scheme of the utility model, the transition layer is gradient structure.

[0014] As a further scheme of the utility model, the gradient structure is gradient structure formed by nanometer metal powder by plasma spraying, and its composition continuously changes from outer layer to inner layer along the thickness direction.

[0015] As a further scheme of the present utility model, the transition layer thickness is 100-150 μm.

[0016] The present utility model has the following technical effects and advantages:

[0017] 1. The present utility model improves the heterogeneous metal interface compatibility through the transition layer of gradient structure and the bionic honeycomb microtexture design of foam steel.

[0018] 2. The present utility model realizes the high-precision customized production of the composite plate by combining the additive manufacturing technology, such as cold spraying, laser cladding, etc. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the present utility model.

[0020] Figure 2 It is a partial exploded structure schematic view of the present utility model. Figure 1

[0021] Figure 3 It is an inner layer base layer structure schematic view of the present utility model.

[0022] The figure mark is: 1, outer layer functional layer; 2, inner layer base layer; 3, transition layer; 4, gradient structure; 5, bionic honeycomb microtexture. DETAILED DESCRIPTION

[0023] The technical scheme in the present utility model will be described clearly and completely in combination with the drawings in the present utility model, and in addition, the form of each structure recorded in the following implementation mode is only an example, and the present utility model is not limited to each structure recorded in the following implementation mode, and all other implementation modes obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the present utility model.

[0024] Referring to Figures 1-3 , the present utility model provides a kind of metal composite board, comprising:

[0025] Inner layer base layer 2: it is composed of foam steel, and bionic honeycomb microtexture 5 is equipped in foam steel, and the microtexture depth of bionic honeycomb microtexture 5 is 15-35 μm, and interval is 0.2-0.3 mm;

[0026] Outer layer functional layer 1: it is two parts, and it is wrapped to inner layer base layer 2, and outer layer functional layer 1 is composed of high-strength aluminum alloy, and the thickness of outer layer functional layer 1 is 0.5-2 mm;

[0027] ​The transition layer 3 is located between the inner layer base layer 2 and the outer layer functional layer 1, the transition layer 3 is a gradient structure 4, the gradient structure 4 is formed by a gradient structure of nano metal powder through plasma spraying, the composition of the gradient structure 4 continuously changes from the outer layer to the inner layer along the thickness direction, the thickness of the transition layer 3 is 100-150 microns, the transition layer 3 of the gradient structure 4 and the bionic honeycomb microstructure 5 of the foam steel are designed, so that the compatibility of the dissimilar metal interface is improved, and the multi-objective performance optimization algorithm is combined with the additive manufacturing technology such as cold spraying, laser cladding, and the high-precision customized production of the composite plate is realized.

[0028] When preparing:

[0029] 1. First, the inner layer base layer 2 is subjected to laser selective melting forming, and a porous structure is simultaneously constructed, so as to form a bionic honeycomb microstructure 5;

[0030] 2. The gradient structure 4 is deposited on the surface of the inner layer base layer 2 and the transition layer 3 is formed by plasma spraying, and the powder composition ratio is dynamically adjusted during the spraying process;

[0031] 3. The micro-punching technology is used to process the surface of the outer layer metal plate;

[0032] 4. The solid-state combination of the outer layer functional layer 1 and the inner layer base layer 2 is realized by vacuum hot pressing diffusion welding, the pressure is 50-100 MPa, the temperature is 400-600 DEG C, and the holding time is 1-3 h.

[0033] Finally, it should be pointed out that in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0034] The utility model discloses the embodiment of the drawings, only relate to the structure of the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflicting, the same embodiment and different embodiments of the utility model can be combined with each other.

Claims

1. A metal composite panel, characterized by: The application relates to a multilayered structure for a high-speed train, which comprises: an inner base layer (2) composed of foamed steel; an outer functional layer (1) in two parts and wrapped around the inner base layer (2); a transition layer (3) between the inner base layer (2) and the outer functional layer (1).

2. The metal composite panel of claim 1, wherein: The foamed steel is internally provided with biomimetic honeycomb micro-texture (5).

3. A metal composite panel according to claim 2, wherein: The micro-texture depth of the biomimetic honeycomb micro-texture (5) is 15-35 mu m, and the interval is 0.2-0.3 mm.

4. The metal composite panel of claim 1, wherein: The outer functional layer (1) is composed of high-strength aluminum alloy.

5. A metal composite panel according to claim 4, wherein: The thickness of the outer functional layer (1) is 0.5-2 mm.

6. The metal composite panel of claim 1, wherein: The transition layer (3) is a gradient structure (4).

7. A metal composite panel according to claim 6, wherein: The gradient structure (4) is formed by plasma spraying of nano metal powder, and the composition continuously changes from the outer layer to the inner layer along the thickness direction.

8. The metal composite panel of claim 6, wherein: The thickness of the transition layer (3) is 100-150 mu m.

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