High conductivity tin-plated copper-clad steel wire

Abstract

This invention provides a high-conductivity tin-plated copper-clad steel wire. The high-conductivity tin-plated copper-clad steel wire includes: a copper-clad wire body; a copper core disposed in the middle of the copper-clad wire body; an aluminum cladding layer on the outer surface of the copper core; a copper plating layer on the outer surface of the aluminum cladding layer; a nano-carbon material reinforcement layer on the outer surface of the copper plating layer; and an outer tin plating layer on the outer surface of the nano-carbon material reinforcement layer. The copper core is made of low-carbon steel, the aluminum cladding layer is made of aluminum, the copper plating layer is made of copper, and the nano-carbon material reinforcement layer is made of graphene or carbon nanotubes. The high-conductivity tin-plated copper-clad steel wire provided by this invention, through the synergistic effect of the aluminum cladding layer and the nano-carbon material reinforcement layer, can improve conductivity, reduce copper usage and lower costs due to the aluminum cladding layer's lower density and reduced wire weight, and enhance bending resistance and wear resistance, thereby improving reliability and lifespan.

Description

Technical Field

[0001] This utility model relates to the field of tin-plated copper-clad steel wire technology, and in particular to high conductivity tin-plated copper-clad steel wire. Background Technology

[0002] Copper-clad steel refers to a composite wire in which copper is wrapped around a steel wire, that is, a steel wire wrapped with a copper layer. It utilizes the skin effect of low-voltage high-frequency signals to travel along the surface in the high-frequency range. Therefore, as long as the copper layer thickness reaches a certain range, the signal in a certain frequency band can be transmitted. The copper plays the role of conducting weak electrical signals, while the steel wire plays the role of support.

[0003] Tinned copper-clad steel wire is a composite wire with a high-strength steel wire core, an outer copper layer, and an outermost tin-plated layer. The steel wire provides mechanical strength, the copper layer ensures conductivity, and the tin layer enhances corrosion resistance and solderability. The layers are bonded together through electroplating or cladding processes, combining the strength of steel, the conductivity of copper, and the protective properties of tin.

[0004] Traditional tin-plated copper-clad steel wires have limited conductivity improvement, and the large amount of copper used results in higher costs, greater overall weight, and insufficient adhesion between the copper core and the copper plating layer, making them prone to detachment.

[0005] Therefore, it is necessary to provide high-conductivity tin-plated copper-clad steel wire to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a high-conductivity tin-plated copper-clad steel wire, which solves the problems of limited conductivity improvement of traditional tin-plated copper-clad steel wire, large copper usage leading to high cost and weight, and easy insufficient adhesion and peeling of the copper plating layer.

[0007] To solve the above-mentioned technical problems, the high conductivity tin-plated copper-clad steel wire provided by this utility model includes: a copper-clad wire body;

[0008] The copper core is located in the middle of the copper-clad wire body. The outer surface of the copper core is provided with an aluminum cladding layer, the outer surface of the aluminum cladding layer is provided with a copper plating layer, the outer surface of the copper plating layer is provided with a nano-carbon material reinforcement layer, and the outer surface of the nano-carbon material reinforcement layer is provided with an outer tin plating layer. The copper core is made of low-carbon steel, the aluminum cladding layer is made of aluminum, the copper plating layer is made of copper, the nano-carbon material reinforcement layer is made of graphene or carbon nanotube nano-carbon material, and the outer tin plating layer is made of tin.

[0009] The high strength of low-carbon steel provides excellent mechanical support for the wire, ensuring sufficient tensile strength and structural stability during use to meet installation and usage requirements in various scenarios. Aluminum has good electrical conductivity and is relatively cheaper than copper. Its role is twofold: firstly, to assist in current conduction and improve overall conductivity; secondly, while ensuring a certain level of conductivity, the thickness of the subsequent copper plating layer can be appropriately reduced, thereby lowering production costs. Furthermore, due to its lower density, aluminum also reduces the overall weight of the wire. The copper plating layer is the main carrier of current conduction, efficiently transmitting most of the current thanks to its excellent conductivity, making it one of the key layers ensuring high conductivity of the wire. The nano-carbon material reinforcement layer forms an efficient electron transport channel between the copper and tin plating layers, accelerating electron transport, reducing resistance, and further improving overall conductivity. Simultaneously, the high strength and toughness of the nano-carbon material enhance the mechanical properties of the wire, improving its bending resistance and wear resistance. The outer tin plating layer primarily serves to prevent oxidation, protecting the internal copper layer from oxidation.

[0010] Preferably, the diameter of the copper core is 0.1-2.0 mm, the thickness of the copper plating layer is 8-20 μm, the thickness of the nano-carbon material reinforcement layer is 10-100 nm, and the thickness of the tin plating layer is 3-10 μm.

[0011] The thickness of the aluminum cladding is controlled to be about 1 / 5 of the diameter of the copper core.

[0012] Preferably, the outer surface of the aluminum cladding is provided with a plurality of raised strips, and the inner surface of the copper plating layer is provided with a mating groove;

[0013] The connection between the raised strip and the mating groove can increase the stability of the connection.

[0014] Preferably, the copper core has through holes at both ends, and the inner surface of the through holes is provided with an inner tin plating layer.

[0015] The inner tin plating layer and the outer tin plating layer are made of the same material and can serve a protective function.

[0016] Preferably, a monitoring ring is installed on one end of the outer surface of the copper core, and a monitoring component is provided on the inner surface of the monitoring ring;

[0017] The monitoring component is in contact with the outer surface of the copper core, allowing for monitoring of the copper core's usage status.

[0018] Preferably, the outer tin plating layer comprises a base layer, a repair layer, and a tin layer, wherein the repair layer is located on the outer surface of the base layer, and the tin layer is located on the outer surface of the repair layer.

[0019] Preferably, both the base layer and the repair layer are made of aluminum, and the thickness of the repair layer is 10-20 nm.

[0020] Both the base layer and the repair layer are made of ultra-thin aluminum.

[0021] Preferably, one side of the repair layer has a plurality of filling holes, and a repair capsule is disposed inside the filling holes.

[0022] Compared with related technologies, the high conductivity tin-plated copper-clad steel wire provided by this utility model has the following beneficial effects:

[0023] This invention provides a high-conductivity tin-plated copper-clad steel wire. To improve the conductivity, bending resistance, and wear resistance of the tin-plated copper-clad steel wire, an aluminum cladding layer, a copper plating layer, a nano-carbon material reinforcement layer, and an outer tin plating layer are sequentially arranged on the outer surface of the copper core. Based on its good conductivity and relatively low cost, the thickness of the copper plating layer can be appropriately reduced while ensuring a certain conductivity, thereby reducing costs. At the same time, aluminum has a low density, which can reduce the weight of the entire wire. The introduction of the nano-carbon material reinforcement layer is due to its unique electrical properties. Nano-carbon materials have excellent electron transport capabilities, which can form an efficient electron transport channel between the copper plating layer and the tin plating layer, further improving conductivity. In addition, the high strength and high toughness of nano-carbon materials can also enhance the mechanical properties of the wire, improving its bending resistance and wear resistance. Through this design, the aluminum cladding layer and the nano-carbon material reinforcement layer work synergistically to improve conductivity, reduce copper usage and lower costs, reduce wire weight due to the low density of aluminum, and enhance bending resistance and wear resistance, thereby improving reliability and lifespan. Attached Figure Description

[0024] Figure 1 A schematic diagram of the structure of the first embodiment of the high conductivity tin-plated copper-clad steel wire provided by this utility model;

[0025] Figure 2 Provided for this utility model Figure 1 An enlarged view of point A shown;

[0026] Figure 3 A schematic diagram of the aluminum cladding structure is provided for this utility model;

[0027] Figure 4 Provided for this utility model Figure 3 An enlarged view of point B shown;

[0028] Figure 5 A schematic diagram of the structure of the second embodiment of the high conductivity tin-plated copper-clad steel wire provided by this utility model;

[0029] Figure 6 Provided for this utility model Figure 5 A magnified view of point C shown.

[0030] The diagram is labeled as follows: 1. Steel cladding body, 101. Copper core, 102. Aluminum cladding, 103. Copper plating layer, 104. Nano-carbon material reinforcement layer, 105. Outer tin plating layer, 1051. Base layer, 1052. Repair layer, 1053. Tin layer, 2. Monitoring ring, 3. Monitoring component, 4. Perforation, 5. Inner tin plating layer, 6. Raised strip, 7. Butt groove, 8. Repair capsule, 9. Filling hole. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] First Embodiment

[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the structure of the first embodiment of the high conductivity tin-plated copper-clad steel wire provided by this utility model; Figure 2 Provided for this utility model Figure 1 An enlarged view of point A shown; Figure 3 A schematic diagram of the aluminum cladding structure is provided for this utility model; Figure 4 Provided for this utility model Figure 3 The enlarged view at point B is shown. The high-conductivity tin-plated copper-clad steel wire includes: a copper-clad wire body 1;

[0034] The copper core 101 is disposed in the middle of the copper-clad wire body 1. The outer surface of the copper core 101 is provided with an aluminum cladding layer 102. The outer surface of the aluminum cladding layer 102 is provided with a copper plating layer 103. The outer surface of the copper plating layer 103 is provided with a nano-carbon material reinforcement layer 104. The outer surface of the nano-carbon material reinforcement layer 104 is provided with an outer tin plating layer 105. The copper core 101 is made of low-carbon steel, the aluminum cladding layer 102 is made of aluminum, the copper plating layer 103 is made of copper, the nano-carbon material reinforcement layer 104 is made of graphene or carbon nanotube nano-carbon materials, and the outer tin plating layer 105 is made of tin.

[0035] The high strength of low-carbon steel provides excellent mechanical support for the wire, ensuring sufficient tensile strength and structural stability during use to meet installation and usage requirements in various scenarios. Aluminum has good electrical conductivity and is relatively cheaper than copper. Its role is twofold: firstly, to assist in current conduction and improve overall conductivity; secondly, while maintaining a certain level of conductivity, the thickness of the subsequent copper plating layer can be appropriately reduced, thereby lowering production costs. Furthermore, due to its lower density, aluminum also reduces the overall weight of the wire. The copper plating layer 103 is the primary current conductor, leveraging its excellent conductivity to achieve high efficiency. The ground layer, which carries most of the current, is one of the key layers to ensure the high conductivity of the wire. The nano-carbon material reinforcement layer 104 forms an efficient electron transport channel between the copper plating layer and the tin plating layer, accelerating electron transport, reducing resistance, and further improving the overall conductivity. At the same time, the high strength and high toughness of the nano-carbon material can also enhance the mechanical properties of the wire, improving its bending resistance and wear resistance. The outer tin plating layer 105 mainly plays the role of anti-oxidation, protecting the internal copper layer from oxidation, thereby maintaining the good conductivity of the wire. In addition, in applications such as welding, the tin layer can also play a role in soldering, facilitating the connection of the wire with other components.

[0036] The copper core 101 has a diameter of 0.1-2.0 mm, the copper plating layer 103 has a thickness of 8-20 μm, the nano-carbon material reinforcement layer 104 has a thickness of 10-100 nm, and the tin plating layer 105 has a thickness of 3-10 μm.

[0037] The thickness of the aluminum cladding 102 is controlled to be about 1 / 5 of the diameter of the copper core. For example, when the diameter of the copper core is 1.0 mm, the thickness of the aluminum cladding is about 0.2 mm.

[0038] Please refer to Figure 1 , Figure 3 and Figure 4 The outer surface of the aluminum cladding 102 is provided with a plurality of raised strips 6, and the inner surface of the copper plating layer 103 is provided with a mating groove 7.

[0039] The protrusion 6 and the mating groove 7 are connected to increase the stability of the connection.

[0040] Please refer to Figure 3 The copper core 101 has through holes 4 at both ends, and the inner surface of the through holes 4 is provided with an inner tin plating layer 5.

[0041] The inner tin plating layer 5 and the outer tin plating layer 105 are made of the same material and can play a protective role. The opening in the copper core 101 can further reduce the weight.

[0042] Please refer to Figure 1 A monitoring ring 2 is installed on one end of the outer surface of the copper core 101, and a monitoring component 3 is provided on the inner surface of the monitoring ring 2.

[0043] The monitoring component 3 is in contact with the outer surface of the copper core 101, and can monitor the usage of the copper core 101.

[0044] The working principle of the high conductivity tin-plated copper-clad steel wire provided by this utility model is as follows:

[0045] An aluminum cladding layer 102, a copper plating layer 103, a nano-carbon material reinforcement layer 104, and an outer tin plating layer 105 are sequentially disposed on the outer surface of the copper core 101. Based on its good conductivity and relatively low cost, the thickness of the copper plating layer can be appropriately reduced while ensuring a certain conductivity, thereby lowering the cost. Simultaneously, aluminum has a low density, which can reduce the overall weight of the wire. The introduction of the nano-carbon material reinforcement layer is due to its unique electrical properties. Nano-carbon materials have excellent electron transport capabilities, forming an efficient electron transport channel between the copper plating layer and the tin plating layer, further improving conductivity. Furthermore, the high strength and high toughness of nano-carbon materials can enhance the mechanical properties of the wire, improving its resistance to bending and wear. When current passes through the tin-plated copper-clad steel wire of this multi-layer composite structure, according to the skin effect, the high-frequency current is mainly transmitted on the conductor surface. The copper core 101 mainly undertakes the mechanical support role, while the aluminum cladding layer 102 and the copper plating layer 103 jointly participate in current conduction. The aluminum cladding layer 102 first receives and conducts a portion of the current. Due to its close contact with the copper core, it can effectively and evenly transmit the current to the copper plating layer 103. The copper plating layer 103, with its good conductivity, efficiently transmits most of the current.

[0046] Compared with related technologies, the high conductivity tin-plated copper-clad steel wire provided by this utility model has the following beneficial effects:

[0047] To improve the conductivity, bending resistance, and wear resistance of tin-plated copper-clad steel wire, an aluminum cladding layer 102, a copper plating layer 103, a nano-carbon material reinforcement layer 104, and an outer tin plating layer 105 are sequentially arranged on the outer surface of the copper core 101. Based on its good conductivity and relatively low cost, the thickness of the copper plating layer can be appropriately reduced while ensuring a certain conductivity, thereby lowering costs. Simultaneously, aluminum's low density reduces the overall weight of the wire. The introduction of the nano-carbon material reinforcement layer is due to its unique electrical properties. Nano-carbon materials possess excellent electron transport capabilities, forming an efficient electron transport channel between the copper and tin plating layers, further enhancing conductivity. Furthermore, the high strength and toughness of nano-carbon materials enhance the mechanical properties of the wire, improving its bending resistance and wear resistance. Through this design, the aluminum cladding layer 102 and the nano-carbon material reinforcement layer 104 work synergistically to improve conductivity, reduce copper usage and lower costs, reduce wire weight due to aluminum's low density, and enhance bending resistance and wear resistance, thereby improving reliability and lifespan.

[0048] Second Embodiment

[0049] Please refer to the following: Figures 5-6 , Figure 5 A schematic diagram of the structure of the second embodiment of the high conductivity tin-plated copper-clad steel wire provided by this utility model; Figure 6 Provided for this utility model Figure 5 The enlarged view at point C shows a second embodiment of the high-conductivity tin-plated copper-clad steel wire provided in the first embodiment of this application, which proposes another high-conductivity tin-plated copper-clad steel wire. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0050] Specifically, the difference between the high conductivity tin-plated copper-clad steel wire provided in the second embodiment of this application and the following is noted: Please refer to... Figure 5 and Figure 6 The outer tin plating layer 105 includes a base layer 1051, a repair layer 1052 and a tin layer 1053. The repair layer 1052 is located on the outer surface of the base layer 1051 and the tin layer 1053 is located on the outer surface of the repair layer 1052.

[0051] The tin layer 1053 is plated on the outer surface of the repair layer 1502.

[0052] Both the base layer 1051 and the repair layer 1052 are made of aluminum, and the thickness of the repair layer 1052 is 10-20 nm.

[0053] Both the base layer 1051 and the repair layer 1052 are made of ultra-thin aluminum.

[0054] Please refer to Figure 5 and Figure 6 The repair layer 1052 has a plurality of filling holes 9 on one side, and a repair capsule 8 is disposed inside the filling hole 9;

[0055] The repair capsule 8 contains inorganic nanoparticles.

[0056] Compared with related technologies, the high conductivity tin-plated copper-clad steel wire provided by this utility model has the following beneficial effects:

[0057] To improve the durability of the outer surface of tin-plated copper-clad steel wire, a new outer tin plating layer 105 is composed of a base layer 1051, a repair layer 1052, and a tin layer 1053. When the outer tin plating layer 105 is slightly damaged, the inorganic nanoparticles in the repair capsule 8 can repair the damaged area. Through this design, the self-healing composite film on the surface of the outer tin plating layer 105 can automatically repair minor damage, extend the service life of the tin plating layer, and ensure long-term stable conductivity and anti-oxidation performance, making it especially suitable for harsh operating environments.

[0058] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high conductivity tinned copper clad steel wire characterized in that, include: Copper-clad wire body; The copper core is located in the middle of the copper-clad wire body. The outer surface of the copper core is provided with an aluminum cladding layer, the outer surface of the aluminum cladding layer is provided with a copper plating layer, the outer surface of the copper plating layer is provided with a nano-carbon material reinforcement layer, and the outer surface of the nano-carbon material reinforcement layer is provided with an outer tin plating layer. The copper core is made of low-carbon steel, the aluminum cladding layer is made of aluminum, the copper plating layer is made of copper, the nano-carbon material reinforcement layer is made of graphene or carbon nanotube nanomaterials, and the outer tin plating layer is made of tin.

2. The high conductivity, tin-coated copper-clad steel wire of claim 1, wherein, The diameter of the copper core is 0.1-2.0 mm, the thickness of the copper plating layer is 8-20 μm, the thickness of the nano-carbon material reinforcement layer is 10-100 nm, and the thickness of the tin plating layer is 3-10 μm.

3. The high conductivity, tin-coated copper-clad steel wire of claim 1 wherein, The outer surface of the aluminum cladding is provided with multiple raised strips, and the inner surface of the copper plating layer is provided with a mating groove.

4. The high conductivity, tin-coated copper-clad steel wire of claim 1 wherein, The copper core has through holes at both ends, and the inner surface of the through holes is provided with an inner tin plating layer.

5. The high conductivity, tin-coated copper-clad steel wire of claim 1 wherein, A monitoring ring is installed on one end of the outer surface of the copper core, and a monitoring component is provided on the inner surface of the monitoring ring.

6. The high conductivity, tin-coated copper-clad steel wire of claim 1 wherein, The outer tin plating layer comprises a base layer, a repair layer, and a tin layer. The repair layer is located on the outer surface of the base layer, and the tin layer is located on the outer surface of the repair layer.

7. The high conductivity, tin-coated copper-clad steel wire of claim 6 wherein, Both the base layer and the repair layer are made of aluminum, and the thickness of the repair layer is 10-20 nm.

8. The high conductivity, tin-coated copper-clad steel wire of claim 6, wherein, The repair layer has multiple filling holes on one side, and repair capsules are disposed inside the filling holes.

Images