High-strength wear-resistant aluminum alloy seamless pipe for automobile torsion beam

Abstract

The utility model discloses a high strength wear -resisting aluminium alloy seamless tube for automobile torsion beam, it includes: inner tube, the outer surface fixedly connected with reinforcing sleeve of inner tube, the front surface of reinforcing sleeve is equipped with first circular through -hole and second circular through -hole, the outer surface fixedly connected with outer tube of reinforcing sleeve, the outer surface fixedly connected with corrosion -resistant layer of outer tube, the corrosion -resistant layer is made of teflon, the outer surface fixedly connected with wear -resisting layer of corrosion -resistant layer, wear -resisting layer is made by carbon fiber and composite ceramic combination. Through the two holes of reinforcing sleeve can disperse stress, flow medium, enhance stability, teflon corrosion -resistant layer can block corrosion, prolong the life of outer tube, the wear -resisting layer made of carbon fiber and composite ceramic can resist friction, protect corrosion -resistant layer, and each part cooperates, realizes anti -twist, corrosion -resistant, wear -resisting, and gives consideration to light weight, adapts high -strength working environment, guarantees torsion beam stable operation.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a high-strength, wear-resistant, seamless aluminum alloy tube for automotive torsion beams. Background Technology

[0002] In the automotive industry's continuous pursuit of performance improvement and lightweighting, the performance of the torsion beam, as a key chassis component, directly affects the vehicle's driving stability, handling, and safety.

[0003] Traditional torsion beams are often composed of thick single-layer plate stamping parts and solid stabilizer bars, which have a large mass and are difficult to meet the current urgent needs of automotive lightweighting. In addition, stress concentration exists in the deformation and non-deformation range, which reduces the fatigue strength of the parts. Utility Model Content

[0004] The purpose of this utility model is to provide a high-strength, wear-resistant, seamless aluminum alloy tube for automotive torsion beams. The two holes of the reinforcing sleeve can disperse stress and facilitate the flow of media, thereby enhancing stability. The Teflon corrosion-resistant layer can block corrosion and extend the life of the outer tube. The wear-resistant layer made of carbon fiber and composite ceramics can resist friction, protect the corrosion-resistant layer, adapt to high-intensity working environments, and ensure the stable operation of the torsion beam.

[0005] To achieve the above objectives, a high-strength, wear-resistant seamless aluminum alloy tube for automotive torsion beams is provided, comprising: an inner tube, a reinforcing sleeve fixedly connected to the outer surface of the inner tube, a first circular connecting hole and a second circular connecting hole formed on the front surface of the reinforcing sleeve, an outer tube fixedly connected to the outer surface of the reinforcing sleeve, a corrosion-resistant layer made of Teflon fixedly connected to the outer surface of the outer tube, and a wear-resistant layer fixedly connected to the outer surface of the corrosion-resistant layer, the wear-resistant layer being made of a combination of carbon fiber and composite ceramics. Multiple components work together to enhance structural strength and protection capabilities, adapting to the complex operating conditions of torsion beams and improving overall durability and stability.

[0006] The outer surface of the carbon fiber is fixedly connected to the composite ceramic using a plasma spraying process, while the outer surfaces of the carbon fiber and Teflon are fixedly connected using an adhesive. These two connection processes ensure a strong bond between the layers, preventing delamination and enhancing the synergistic protective effect of the wear-resistant and corrosion-resistant layers.

[0007] The inner tube is fixedly connected to the outer tube via an interference fit cold treatment process and a reinforcing sleeve. The reinforcing sleeve is made of high-strength aluminum alloy and is fixedly connected to the outer tube via an interference fit heat treatment process. Both interference fit processes ensure a tight connection, while the high-strength material enhances support and improves the overall structural rigidity and torsional resistance.

[0008] The corrosion-resistant layer is twice the thickness of the wear-resistant layer, which has a wall thickness of 0.2 mm. This reasonable wall thickness ratio ensures effective protection while achieving a lightweight design, meeting the energy-saving and performance requirements of automobiles.

[0009] The positions of the first circular connecting hole and the second circular connecting hole are staggered, with the second circular connecting hole distributed around the first circular connecting hole. This hole placement design disperses stress, improves the fatigue resistance of the reinforcing sleeve, optimizes stress transmission efficiency, and ensures long-term structural stability.

[0010] The interiors of both the first and second circular connecting holes are connected to the rear surface of the reinforcing sleeve. This interconnectedness facilitates the flow of internal media, prevents pressure buildup, protects the reinforcing sleeve structure, and extends its service life.

[0011] The above-mentioned solution has the following beneficial effects: This utility model comprises a reinforcing sleeve, a first circular connecting hole, a second circular connecting hole, an outer tube, a corrosion-resistant layer, Teflon, a wear-resistant layer, carbon fiber, and composite ceramics. The two holes of the reinforcing sleeve can disperse stress and allow the flow of medium, thereby enhancing stability. The Teflon corrosion-resistant layer can block corrosion and extend the life of the outer tube. The wear-resistant layer made of carbon fiber and composite ceramics can resist friction, protect the corrosion-resistant layer, adapt to high-intensity working environments, and ensure the stable operation of the torsion beam. Attached Figure Description

[0012] Figure 1 This is a perspective view of the high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to this utility model.

[0013] Figure 2 This is a front view of the high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to this utility model.

[0014] Figure 3 This is a cross-sectional perspective view of the high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to this utility model.

[0015] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0016] Legend: 1. Inner tube; 2. Reinforcing sleeve; 3. First circular connecting hole; 4. Second circular connecting hole; 5. Outer tube; 6. Corrosion-resistant layer; 7. Wear-resistant layer. Detailed Implementation

[0017] Reference Figure 1-4This utility model discloses a high-strength, wear-resistant, seamless aluminum alloy tube for automotive torsion beams. It includes an inner tube 1, with a reinforcing sleeve 2 fixedly connected to its outer surface. The reinforcing sleeve 2 enhances the inner tube 1's resistance to deformation under torsion beam stress, ensuring a stable overall structure between the inner tube 1 and the reinforcing sleeve 2. The front surface of the reinforcing sleeve 2 has a first circular connecting hole 3 and a second circular connecting hole 4. These holes allow for the dispersion and transmission of internal stress during torsion beam operation, preventing stress concentration in localized areas of the reinforcing sleeve 2. An outer tube 5 is fixedly connected to the outer surface of the reinforcing sleeve 2. The outer tube 5 cooperates with the reinforcing sleeve 2, further improving the overall structural strength of the tube and jointly bearing the torque force transmitted by the torsion beam. A corrosion-resistant layer 6 is fixedly connected to the surface of the outer tube 5. The corrosion-resistant layer 6 is tightly attached to the surface of the outer tube 5, which can block the corrosion of the outer tube 5 by external corrosive media and extend the service life of the outer tube 5. The corrosion-resistant layer 6 is made of Teflon. The Teflon material gives the corrosion-resistant layer 6 excellent chemical resistance, which can effectively resist the damage of various corrosive substances such as acids and alkalis. A wear-resistant layer 7 is fixedly connected to the outer surface of the corrosion-resistant layer 6. The wear-resistant layer 7 covers the outside of the corrosion-resistant layer 6 and can withstand external friction damage, protecting the corrosion-resistant layer 6 from being easily worn. The wear-resistant layer 7 is made of carbon fiber and composite ceramic. The high strength of carbon fiber and the high wear resistance of composite ceramic combine to give the wear-resistant layer 7 good toughness and excellent wear resistance.

[0018] The outer surface of the carbon fiber is fixedly connected to the composite ceramic through a plasma spraying process. This process ensures a tight bond between the carbon fiber and the composite ceramic, making the wear-resistant layer 7 a whole, improving its structural stability and wear resistance. The outer surfaces of the carbon fiber and Teflon are fixedly connected with an adhesive to ensure a firm connection between the wear-resistant layer 7 and the corrosion-resistant layer 6, preventing delamination during torsion beam vibration. The inner tube 1 is fixedly connected to the reinforcing sleeve 2 through an interference fit cold treatment process. This connection method eliminates gaps between the inner tube 1 and the reinforcing sleeve 2, allowing for synchronous force transmission when the torsion beam is under stress, thus improving the rigidity of the overall structure. The reinforcing sleeve 2 is made of high-strength aluminum alloy, which gives it high strength and hardness, effectively supporting the inner tube 1 and the outer tube 5, and adapting to the high-intensity working environment of the torsion beam. The reinforcing sleeve 2 is fixedly connected to the outer tube 5 through an interference fit heat treatment process, ensuring a tight fit between the two. The wall thickness of the corrosion-resistant layer 6 is twice that of the wear-resistant layer 7. The thicker corrosion-resistant layer 6 can improve... To provide more durable corrosion protection, a thin but highly wear-resistant wear layer 7 is used in conjunction with the wear layer 7. This ensures both protective effectiveness and lightweight design of the overall structure. The wear layer 7 has a wall thickness of 0.2 mm. This thickness design meets the wear resistance requirements of the torsion beam without excessively increasing the weight of the tube, which is in line with the lightweight design concept of automobiles. The positions of the first circular connecting hole 3 and the second circular connecting hole 4 are staggered. The staggered position allows stress to be dispersed in multiple directions through the two holes, enhancing the fatigue resistance of the reinforcing sleeve 2. The second circular connecting hole 4 is distributed around the first circular connecting hole 3. This distribution allows the stress around the first circular connecting hole 3 to be further dispersed through the second circular connecting hole 4, improving the overall stress transmission efficiency of the reinforcing sleeve 2. The interiors of both the first circular connecting hole 3 and the second circular connecting hole 4 are connected to the rear surface of the reinforcing sleeve 2, allowing airflow or other media inside the reinforcing sleeve 2 to flow smoothly and preventing the structural stability of the reinforcing sleeve 2 from being affected by internal pressure accumulation.

[0019] Working Principle: First, an interference fit cold treatment process is used to fix the inner tube 1 to the reinforcing sleeve 2 made of high-strength aluminum alloy. This gapless connection allows both to transmit force synchronously when the torsion beam is under stress, improving the overall structural rigidity. The high-strength aluminum alloy reinforcing sleeve 2 itself has high strength and hardness, effectively supporting the inner tube 1 and enhancing its resistance to deformation. Next, a first circular connecting hole 3 and a second circular connecting hole 4 are machined on the front surface of the reinforcing sleeve 2. The two holes are staggered, with the second circular connecting hole 4 distributed around the first circular connecting hole 3. At the same time, it is ensured that the interior of both holes is connected to the rear surface of the reinforcing sleeve 2. This not only enables the multi-directional dispersion and transmission of internal stress during the operation of the torsion beam, avoiding stress concentration, but also allows for smooth flow of internal airflow or media, preventing pressure accumulation from affecting the structural stability of the reinforcing sleeve 2. Then, an interference fit heat treatment process is used to fix the reinforcing sleeve 2 to the outer tube 5, making the two fit tightly together, further improving the structural strength of the entire tube body and jointly bearing the torsion. The torque force transmitted by the torsion beam is then fixedly connected to the outer surface of the outer tube 5. The excellent chemical resistance of Teflon can prevent external corrosive media from eroding the outer tube 5, extending its service life. The wall thickness of the corrosion-resistant layer 6 is set to be twice that of the wear-resistant layer 7, providing more durable corrosion protection. Next, the wear-resistant layer 7 is fixedly connected to the outer surface of the corrosion-resistant layer 6. The wear-resistant layer 7 is made of carbon fiber and composite ceramic through a plasma spraying process (the outer surface of the carbon fiber is fixedly connected to the composite ceramic through this process to ensure a tight bond). The carbon fiber and the outer surface of the Teflon are fixed with an adhesive to ensure a firm connection between the wear-resistant layer 7 and the corrosion-resistant layer 6, preventing delamination during vibration. Its 0.2 mm wall thickness design meets the wear resistance requirements and conforms to the lightweight concept, and can withstand external friction damage to protect the corrosion-resistant layer 6. Finally, the assembled whole structure is installed on the automobile torsion beam. The components work together to adapt to the high-intensity working environment and ensure the stable operation of the torsion beam.

Claims

1. A high-strength, wear-resistant, seamless aluminum alloy tube for automotive torsion beams, characterized in that: The device includes an inner tube (1), a reinforcing sleeve (2) fixedly connected to the outer surface of the inner tube (1), a first circular connecting hole (3) and a second circular connecting hole (4) opened on the front surface of the reinforcing sleeve (2), an outer tube (5) fixedly connected to the outer surface of the reinforcing sleeve (2), a corrosion-resistant layer (6) fixedly connected to the outer surface of the outer tube (5), the corrosion-resistant layer (6) being made of Teflon, and a wear-resistant layer (7) fixedly connected to the outer surface of the corrosion-resistant layer (6), the wear-resistant layer (7) being made of carbon fiber and composite ceramic.

2. The high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to claim 1, characterized in that: The outer surface of the carbon fiber is fixedly connected to the composite ceramic through plasma spraying, and the outer surfaces of the carbon fiber and Teflon are fixedly connected by an adhesive.

3. The high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to claim 1, characterized in that: The inner tube (1) is fixedly connected to the reinforcing sleeve (2) by an interference fit cold treatment process. The reinforcing sleeve (2) is made of high-strength aluminum alloy. The reinforcing sleeve (2) is fixedly connected to the outer tube (5) by an interference fit heat treatment process.

4. The high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to claim 1, characterized in that: The wall thickness of the corrosion-resistant layer (6) is twice that of the wear-resistant layer (7), which has a wall thickness of 0.2 mm.

5. The high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to claim 1, characterized in that: The positions of the first circular connecting hole (3) and the second circular connecting hole (4) are staggered, and the second circular connecting hole (4) is distributed around the first circular connecting hole (3).

6. The high-strength wear-resistant seamless aluminum alloy tube for automotive torsion beams according to claim 1, characterized in that: The interiors of the first circular connecting hole (3) and the second circular connecting hole (4) are both connected to the rear surface of the reinforcing sleeve (2).

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