High-conductivity aluminum-steel explosively formed composite plate

Abstract

The utility model provides a kind of high-conductivity aluminum steel explosive forming composite board, especially relate to high-conductivity aluminum steel explosive forming composite board field.To solve the high-conductivity aluminum steel explosive forming composite board in prior art, poor corrosion resistance, steel base layer is easy to rust, it is difficult to adapt to complex scene such as humid, industrial corrosion, conductivity drops, long-term use is prone to delamination, cannot realize large-area, thin specification product mass production, cannot take into account lightweight and rigid composite substrate.The utility model discloses a composite substrate, aluminum base layer, transition bonding material layer and steel base layer, the side of the aluminum base layer away from transition bonding material layer is arranged on the surface of composite substrate.Compared with original composite board, the composite board has good corrosion resistance, the steel base layer is not prone to rust, can adapt to complex scene such as humid, industrial corrosion, conductivity is improved, long-term use is not prone to delamination, can realize large-area, thin specification product mass production, can take into account lightweight and rigid composite substrate.

Description

Technical Field

[0001] This utility model relates to a device in the field of high conductivity aluminum-steel explosion-formed composite plate, and more particularly to a high conductivity aluminum-steel explosion-formed composite plate. Background Technology

[0002] Exploded composite plates are metal composite plates produced by the explosive bonding method, which achieves solid-state metallurgical bonding between metal layers through the ultra-high pressure and high-speed impact energy generated by the explosion of explosives. This process requires precise control of the properties of the base material, explosive parameters, and dynamic collision conditions. The composite interface has a wavy structure and exhibits atomic diffusion and work hardening phenomena. The interface area is about one-third larger than that of rolled composite plates.

[0003] Existing high-conductivity aluminum-steel explosion-formed composite panels have poor corrosion resistance, the steel base layer is prone to rust, making them unsuitable for complex environments such as humidity and industrial corrosion. They also suffer from decreased conductivity and delamination after long-term use. This makes it impossible to mass-produce large-area, thin-size products, and there is no composite substrate that can balance lightweight and rigidity. Furthermore, there is no transition layer that can accommodate the differences in aluminum and steel materials. As a result, traditional composite panels are either too heavy or have high conductivity loss.

[0004] Therefore, it is necessary to provide a high-conductivity aluminum-steel explosion-formed composite plate to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or to imply in any way that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a high-conductivity aluminum-steel explosion-formed composite plate to solve the problems of existing high-conductivity aluminum-steel explosion-formed composite plates, such as poor corrosion resistance, easy rusting of the steel base layer, difficulty in adapting to complex environments such as humidity and industrial corrosion, decreased conductivity, easy delamination after long-term use, inability to achieve mass production of large-area, thin-size products, inability to balance lightweight and rigid composite substrates, and lack of a transition layer to accommodate the differences in aluminum and steel materials. This results in traditional composite plates being either too heavy or having high conductivity losses. The various technical effects of the preferred technical solutions provided by this invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This utility model provides a high conductivity aluminum-steel explosion-formed composite plate, comprising: a composite substrate, an aluminum base layer, a transition bonding material layer, and a steel base layer. The side of the aluminum base layer away from the transition bonding material layer is disposed on the surface of the composite substrate, and the side of the transition bonding material layer away from the steel base layer is disposed on the surface of the aluminum base layer.

[0008] The composite substrate includes a carbon steel substrate and a composite material layer, wherein the side of the composite material layer away from the aluminum substrate is disposed on the surface of the carbon steel substrate.

[0009] The transition bonding material layer includes a silver alloy composite layer and an aluminum alloy composite layer, with the side of the silver alloy composite layer away from the steel base layer disposed on the surface of the aluminum alloy composite layer.

[0010] Preferably, the surface of the steel base layer is coated with a zinc-aluminum alloy anti-rust coating, and the thickness of the zinc-aluminum alloy anti-rust coating is 10μm.

[0011] Preferably, the aluminum base layer is made of 1060 industrial pure aluminum with a purity of 99.8%, and the thickness of the aluminum base layer is 1.8-2mm.

[0012] Preferably, the thickness of the steel base layer is 4-5mm, and the material of the steel base layer can be SPHC low carbon steel.

[0013] Preferably, the composite material layer is made of carbon fiber reinforced resin matrix composite material, and the thickness of the composite material layer is 0.5-1mm, which improves the overall rigidity of the composite substrate under the premise of lightweighting and avoids overall deformation of the composite board.

[0014] Preferably, the aluminum alloy composite layer is made of Al-Mg alloy, and the thickness of the aluminum alloy composite layer is 8-12μm. It has good compatibility with the aluminum base layer 2 material and ensures electrical continuity.

[0015] The advantages of the high conductivity aluminum-steel explosion-formed composite plate provided by this utility model are as follows: Compared with the original composite plate, this composite plate has better corrosion resistance, the steel base layer is not easy to rust, it can be adapted to complex scenarios such as humidity and industrial corrosion, the conductivity is improved, it is not easy to delamination after long-term use, it can realize the mass production of large-area, thin-specification products, it can balance lightweight and rigid composite substrates, and it can also be adapted to the transition layer with different aluminum and steel materials, so that the composite plate will not be either too heavy or have high conductivity loss. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-conductivity aluminum-steel explosion-formed composite plate according to this utility model.

[0017] Figure 2 This is a partial schematic diagram of the composite substrate structure of a high-conductivity aluminum-steel explosion-formed composite plate according to this utility model.

[0018] Figure 3 This is a partial schematic diagram of the transition bonding material layer structure of a high-conductivity aluminum-steel explosion-formed composite plate according to this utility model.

[0019] In the figure: 1. Composite substrate; 101. Carbon steel substrate; 102. Composite material layer; 2. Aluminum base layer; 3. Transition bonding material layer; 301. Silver alloy composite layer; 302. Aluminum alloy composite layer; 4. Steel base layer. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding technical features. The drawings are for illustrative purposes only and are not necessarily drawn to scale.

[0022] See Figure 1 , Figure 2 and Figure 3 As shown in the figure, a high conductivity aluminum-steel explosion-formed composite plate includes: a composite substrate 1, an aluminum base layer 2, a transition bonding material layer 3, and a steel base layer 4. The side of the aluminum base layer 2 away from the transition bonding material layer 3 is disposed on the surface of the composite substrate 1, and the side of the transition bonding material layer 3 away from the steel base layer 4 is disposed on the surface of the aluminum base layer 2.

[0023] The composite substrate 1 includes a carbon steel substrate 101 and a composite material layer 102, with the side of the composite material layer 102 away from the aluminum base layer 2 disposed on the surface of the carbon steel substrate 101.

[0024] The transition bonding material layer 3 includes a silver alloy composite layer 301 and an aluminum alloy composite layer 302, with the side of the silver alloy composite layer 301 away from the steel base layer 4 disposed on the surface of the aluminum alloy composite layer 302.

[0025] Furthermore, the surface of the steel base layer 4 is coated with a zinc-aluminum alloy anti-rust coating, and the thickness of the zinc-aluminum alloy anti-rust coating is 10μm.

[0026] In this embodiment, the service life of the composite board in humid and corrosive industrial environments can be improved, adapting to the needs of multiple scenarios such as power transmission and electronic heat dissipation.

[0027] Furthermore, the aluminum base layer 2 is made of 1060 industrial pure aluminum with a purity of 99.8%, and the thickness of the aluminum base layer 2 is 1.8-2mm.

[0028] In this embodiment, the double-layer structure of "silver alloy composite layer 301 + aluminum alloy composite layer 302" forms a precise fit. The 8-12μm thick Al-Mg alloy layer is highly compatible with the 1.8-2mm thick 1060 aluminum base layer with 99.8% purity, avoiding conductive gaps at the interface.

[0029] Furthermore, the thickness of the steel base layer 4 is 4-5mm, and the material of the steel base layer 4 can be SPHC low carbon steel.

[0030] In this embodiment, a 5mm steel base layer 4+2mm aluminum base layer 2 is selected for the power transmission field to enhance the resistance to external impact, and a 4mm steel base layer 4+1.8mm aluminum base layer 2 is selected for the electronic heat dissipation field to improve heat dissipation efficiency and realize the reuse of "one board for multiple scenarios".

[0031] Furthermore, the composite material layer 102 is made of carbon fiber reinforced resin matrix composite material, and the thickness of the composite material layer 102 is 0.5-1mm.

[0032] In this embodiment, the overall rigidity of the composite substrate is improved while maintaining a lightweight design, thus preventing overall deformation of the composite board.

[0033] Furthermore, the aluminum alloy composite layer 302 can be made of Al-Mg alloy, and the thickness of the aluminum alloy composite layer 302 is 8-12μm.

[0034] In this embodiment, it has good compatibility with the aluminum base material 2, ensuring electrical continuity.

[0035] In use, the composite substrate 1 employs a layered design of "carbon steel substrate 101 + composite material layer 102 carbon fiber reinforced resin matrix composite material". The 0.5-1mm thick carbon fiber composite material, while reducing weight compared to the pure carbon steel substrate 101, enhances the overall rigidity of the composite substrate 1, enabling it to withstand the same load. This completely resolves the contradiction between traditional substrates being "heavy and brittle" or "light but soft", adapting to the lightweight installation requirements of equipment. The dual-layer structure of "silver alloy composite layer 301 + aluminum alloy composite layer 302" provides a precise fit. The 8-12μm thick Al-Mg alloy layer is highly compatible with the 1.8-2mm thick 99.8% pure 1060 aluminum base layer, avoiding interfacial conductive gaps. The 5-8μm thick Ag-Cu alloy layer utilizes the high conductivity of silver to improve the overall conductivity of the transition bonding material layer 3. Simultaneously, the high temperature of the explosion molding process... High pressure (800-1200℃, 10-30GPa) promotes atomic-level diffusion bonding between the transition bonding material layer 3, the aluminum base layer 2, and the steel base layer 4, resulting in an interfacial bonding strength ≥200MPa, which is higher than that of rolled composite plates. This eliminates the risk of delamination during long-term use. The 4-5mm thick SPHC low-carbon steel base layer is coated with a 10μm thick zinc-aluminum alloy anti-rust coating, which shows no rust after neutral salt spray testing. This extends the service life compared to uncoated steel base layers and makes it suitable for humid and corrosive industrial environments. With the synergy of parameters at each layer, the overall composite plate has a conductivity ≥58% IACS and a tensile strength ≥300MPa, making it suitable for different scenarios. In the power transmission field, a 5mm steel base layer 4 + 2mm aluminum base layer 2 is selected to enhance resistance to external impacts. In the electronic heat dissipation field, a 4mm steel base layer 4 + 1.8mm aluminum base layer 2 is selected to improve heat dissipation efficiency, enabling "one plate for multiple scenarios" reuse.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-conductivity aluminum-steel explosion-formed composite plate, characterized in that, include: The composite substrate (1), aluminum base layer (2), transition bonding material layer (3) and steel base layer (4) are provided on the surface of the composite substrate (1) on the side away from the transition bonding material layer (3), and the transition bonding material layer (3) is provided on the surface of the aluminum base layer (2) on the side away from the steel base layer (4). The composite substrate (1) includes a carbon steel substrate (101) and a composite material layer (102), wherein the composite material layer (102) is disposed on the surface of the carbon steel substrate (101) on the side away from the aluminum base layer (2). The transition bonding material layer (3) includes a silver alloy composite layer (301) and an aluminum alloy composite layer (302), with the silver alloy composite layer (301) disposed on the surface of the aluminum alloy composite layer (302) on the side away from the steel base layer (4).

2. The high conductivity aluminum-steel explosion-formed composite plate according to claim 1, characterized in that: The surface of the steel base layer (4) is coated with a zinc-aluminum alloy anti-rust coating, and the thickness of the zinc-aluminum alloy anti-rust coating is 10μm.

3. The high conductivity aluminum-steel explosion-formed composite plate according to claim 1, characterized in that: The aluminum base layer (2) is made of 1060 industrial pure aluminum with a purity of 99.8%, and the thickness of the aluminum base layer (2) is 1.8-2mm.

4. The high conductivity aluminum-steel explosion-formed composite plate according to claim 1, characterized in that: The thickness of the steel base layer (4) is 4-5mm, and the material of the steel base layer (4) can be SPHC low carbon steel.

5. The high conductivity aluminum-steel explosion-formed composite plate according to claim 1, characterized in that: The composite material layer (102) is made of carbon fiber reinforced resin matrix composite material, and the thickness of the composite material layer (102) is 0.5-1mm.

6. The high conductivity aluminum-steel explosion-formed composite plate according to claim 1, characterized in that: The aluminum alloy composite layer (302) can be made of Al-Mg alloy, and the thickness of the aluminum alloy composite layer (302) is 8-12μm.

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