High-strength high-conductivity steel-aluminum composite plate explosive welding block

Abstract

The utility model discloses a kind of high-strength high-conductivity steel-aluminum composite plate explosive welding block, it relates to explosive welding block technical field, including steel plate and aluminum plate, steel plate is located at the bottom of aluminum plate, the four corners of steel plate and the four corners of aluminum plate are all set with round angle, the upper surface of steel plate is set with multiple micron-level grooves, explosive welding connection between steel plate and aluminum plate;The bottom of steel plate is provided with buffer support plate.A kind of high-strength high-conductivity steel-aluminum composite plate explosive welding block of the utility model, by setting the several micron-level grooves of steel plate upper surface, in the fusion welding of steel plate and aluminum plate, the welding surface molten metal of aluminum plate can be infiltrated into several micron-level grooves, increase the "occlusal" force, improve welding strength, the multiple wave-shaped protrusions of aluminum plate lower surface, in explosion, can be inserted into steel plate upper surface, can form "mechanical lock catch" structure, increase interface friction, improve welding strength.

Description

Technical Field

[0001] This utility model relates to the field of explosive welding block technology, specifically to an explosive welding block for high-strength, high-conductivity steel-aluminum composite plates. Background Technology

[0002] In the electrolytic aluminum cell, the anode aluminum guide rod and anode steel claw need to be stably connected to conduct current. The aluminum guide rod also needs to bear the weight of the steel claw and the anode carbon block. Due to the influence of the working environment, the aluminum guide rod and steel claw cannot be connected with bolts or other components, but are fixed by welding. However, the two are made of two different metals, and ordinary welding cannot achieve the expected results. In the existing connection method, an explosive welding block is added to weld the aluminum guide rod and steel claw together.

[0003] In the process of realizing this utility model, the inventors discovered that:

[0004] Existing explosive welding blocks are welded using explosives. However, during welding, the surfaces of the two parts are flat, resulting in low friction. When the surfaces melt at high temperatures, the stability of the joint between the two surfaces is generally poor. In addition, the corners of existing explosive welding blocks are right angles. Right angles can easily cause shock waves to be reflected and superimposed at the corners, forming local high-pressure zones. This may cause material spatter or excessive plastic deformation of the interface. During explosive welding, the high stress at the corners may cause microcracks at the interface to propagate into the weld block. Therefore, the structural strength of traditional explosive welding blocks is easily affected. Furthermore, the existing welding process places the explosive welding blocks on hard structures such as the ground, which cannot effectively absorb the explosive impact energy and is prone to overall vibration and deformation of the welding blocks. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, this utility model provides a high-strength, high-conductivity steel-aluminum composite plate explosion welding block.

[0006] Therefore, the technical solution of this utility model is as follows: a high-strength and high-conductivity steel-aluminum composite plate explosion welding block, comprising a steel plate and an aluminum plate, the steel plate being located at the bottom of the aluminum plate, the four corners of the steel plate and the four corners of the aluminum plate being rounded, the upper surface of the steel plate being provided with multiple micron-level grooves, and the steel plate and the aluminum plate being explosively welded together.

[0007] The bottom of the steel plate is provided with a buffer support plate, which is embedded in the inside of the steel base. Multiple shock-absorbing springs are provided between the buffer support plate and the steel base. The inside of the steel base is filled with shock-absorbing and noise-reducing material. Multiple vacuum grooves are opened on the upper surface of the buffer support plate.

[0008] Preferably, both the steel plate and the aluminum plate are rectangular plates, with equal lengths and equal widths.

[0009] Preferably, the four rounded corners of the steel plate have the same curvature as the four rounded corners of the aluminum plate; during explosive welding of this structure, the steel plate and the aluminum plate can fully melt and connect, improving the integrity and stability of the weld.

[0010] Preferably, the depth of the plurality of micron-sized trenches is 50-100 μm, and the spacing between the plurality of micron-sized trenches is 200-500 μm; this structure increases structural interlocking and increases the friction of the welding surface.

[0011] Preferably, the lower surface of the aluminum plate is provided with multiple corrugated protrusions, which are staggered with multiple micron-level grooves; this structure forms a "mechanical interlocking" structure, improving welding strength.

[0012] Preferably, the top end of the shock-absorbing spring is connected to the bottom end of the buffer support plate, and the bottom end of the shock-absorbing spring is connected to the inner wall of the steel base; this ensures the stability of the shock-absorbing spring and provides a shock-absorbing effect when absorbing and buffering the explosive impact force.

[0013] Beneficial effects: Compared with the prior art, this utility model, by setting several micron-level grooves on the upper surface of the steel plate, allows the molten metal on the welding surface of the aluminum plate to penetrate into these grooves during the fusion welding of the steel and aluminum plates, increasing the "interlocking" force and improving the welding strength. Multiple wavy protrusions on the lower surface of the aluminum plate will insert into the upper surface of the steel plate during the explosion, forming a "mechanical interlocking" structure, increasing interfacial friction and improving welding strength. The rounded corners of the steel and aluminum plates reduce surface roughness and microscopic defects (such as spikes and pits), making the conductive path more continuous and enhancing the conductivity of the exploded weld. The inclusion of a buffer support plate, steel base, and shock-absorbing springs absorbs the explosive impact energy, reducing the overall vibration and deformation of the weld. The steel base restricts and protects the overall shape, preventing structural damage and weld displacement caused by the explosive impact. The vacuum groove, aided by the impact pressure of the steel plate, allows air to escape from the vacuum, thus tightly adhering the steel plate and preventing the weld from shifting or shaking during welding. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the micron-level trench of this utility model.

[0016] Figure 3 This is a schematic diagram of the waveform protrusion of this utility model.

[0017] Figure 4 This is a schematic diagram of the steel base of this utility model.

[0018] The following are shown in the figure: 1. Steel plate; 2. Aluminum plate; 3. Rounded corners; 4. Buffer support plate; 5. Steel base; 6. Micron-level grooves; 7. Wave-shaped protrusions; 8. Vacuum grooves; 9. Shock-absorbing springs; 10. Shock-absorbing and noise-reducing materials. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings, but this embodiment should not be construed as a limitation of this utility model.

[0020] This utility model is as follows Figures 1 to 4 As shown:

[0021] A high-strength, high-conductivity steel-aluminum composite plate explosion welding block includes a steel plate 1 and an aluminum plate 2. The steel plate 1 is located at the bottom of the aluminum plate 2. The four corners of both the steel plate 1 and the aluminum plate 2 are rounded 3 with an R5mm radius. Multiple micron-level grooves 6 are formed on the upper surface of the steel plate 1. The steel plate 1 and the aluminum plate 2 are explosively welded together. Both the steel plate 1 and the aluminum plate 2 are rectangular plates with equal lengths. The steel plate 1 has the same width as the aluminum plate 2, and the four rounded corners 3 of the steel plate 1 have the same curvature as the four rounded corners 3 of the aluminum plate 2. The depth of the multiple micron-level grooves 6 is 50-100μm, and the spacing between the multiple micron-level grooves 6 is 200-500μm. The lower surface of the aluminum plate 2 is provided with multiple corrugated protrusions 7, which are staggered with the multiple micron-level grooves 6. The corrugated protrusions 7 and the micron-level grooves 6 are distributed at a 45° offset, with an offset spacing of 150μm.

[0022] During welding, steel plate 1 and aluminum plate 2 are stacked and explosive welding is performed. Before explosive welding, the upper surface of steel plate 1 is laser-etched or EDM-processed to form several micrometer-level grooves 6 on the welding surface. The depth of these grooves 6 is 50-100 μm, and the spacing is 200-500 μm. During the explosive welding process, as the steel plate 1 and aluminum plate 2 fuse together, the molten metal on the welding surface of aluminum plate 2 will penetrate into these micrometer-level grooves 6, increasing the "interlocking" force and improving the weld strength. Multiple wavy protrusions 7 on the lower surface of aluminum plate 2 will insert into the upper surface of steel plate 1 during the explosion, forming a "mechanical interlock". The structure increases interfacial friction. Before welding, the four right angles of the steel plate 1 and the four right angles of the aluminum plate 2 are processed into rounded corners 3. This corner design reduces surface roughness and micro-defects such as spikes and pits, making the conductive path more continuous and enhancing the conductivity of the explosive weld. At the same time, during explosive welding, the high stress at the relatively small and tense corners may cause interfacial micro-cracks to propagate into the weld. The rounded corner design 3 can change the crack propagation path, such as changing it from straight-line propagation to curved propagation, thus increasing the resistance to crack propagation.

[0023] In this embodiment, a buffer support plate 4 is provided at the bottom of the steel plate 1. The buffer support plate 4 is embedded in the interior of the steel base 5. Multiple shock-absorbing springs 9 are provided between the buffer support plate 4 and the steel base 5. The interior of the steel base 5 is filled with shock-absorbing and noise-reducing material 10. Multiple vacuum grooves 8 are opened on the upper surface of the buffer support plate 4. The top end of the shock-absorbing spring 9 is installed and connected to the bottom end of the buffer support plate 4. The bottom end of the shock-absorbing spring 9 is installed and connected to the inner wall of the steel base 5.

[0024] During welding, steel plate 1 and aluminum plate 2 are stacked on buffer support plate 4. Buffer support plate 4 is embedded in steel base 5, and steel plate 1 is in direct contact with buffer support plate 4. In this way, during explosive welding, the explosive impact force can be transmitted to the bottom, and the shock force is absorbed and buffered by buffer support plate 4 and multiple shock-absorbing springs 9 inside. This can absorb the explosive impact energy and reduce the overall vibration and deformation of the weld block. Steel base 5 restricts and protects the overall shape to prevent the explosive impact force from damaging the structure and causing the weld block to shift. Multiple vacuum grooves 8 opened on the upper surface of buffer support plate 4 will, when the explosive impact occurs, use the impact pressure of steel plate 1 to expel the air inside the vacuum grooves 8, thereby using vacuum to tightly hold steel plate 1 and keep the weld block from shifting and shaking during welding.

[0025] Any aspects not described in detail in this specification are techniques well-known in the art.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength, high-conductivity steel-aluminum composite plate explosion welding block, comprising a steel plate (1) and an aluminum plate (2), characterized in that: The steel plate (1) is located at the bottom of the aluminum plate (2). The four corners of the steel plate (1) and the four corners of the aluminum plate (2) are all rounded (3). The upper surface of the steel plate (1) is provided with multiple micron-level grooves (6). The steel plate (1) and the aluminum plate (2) are connected by explosive welding. The bottom of the steel plate (1) is provided with a buffer support plate (4), which is embedded in the interior of the steel base (5). Multiple shock-absorbing springs (9) are provided between the buffer support plate (4) and the steel base (5). The interior of the steel base (5) is filled with shock-absorbing and noise-reducing material (10). Multiple vacuum grooves (8) are opened on the upper surface of the buffer support plate (4).

2. The high-strength, high-conductivity steel-aluminum composite plate explosion welding block according to claim 1, characterized in that: Both the steel plate (1) and the aluminum plate (2) are rectangular plates. The steel plate (1) and the aluminum plate (2) have the same length and the same width.

3. The high-strength, high-conductivity steel-aluminum composite plate explosion welding block according to claim 1 or 2, characterized in that: The four rounded corners (3) of the steel plate (1) have the same curvature as the four rounded corners (3) of the aluminum plate (2).

4. The high-strength, high-conductivity steel-aluminum composite plate explosion welding block according to claim 3, characterized in that: The depth of the plurality of micron-sized trenches (6) is 50-100 μm, and the spacing between the plurality of micron-sized trenches (6) is 200-500 μm.

5. The high-strength, high-conductivity steel-aluminum composite plate explosion welding block according to claim 1, 2, or 4, characterized in that: The lower surface of the aluminum plate (2) is provided with multiple wave-shaped protrusions (7), and the multiple wave-shaped protrusions (7) are staggered with the positions of multiple micron-level grooves (6).

6. The high-strength, high-conductivity steel-aluminum composite plate explosion welding block according to claim 5, characterized in that: The top end of the shock-absorbing spring (9) is installed and connected to the bottom end of the buffer support plate (4), and the bottom end of the shock-absorbing spring (9) is installed and connected to the inner wall of the steel seat (5).

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