aluminum clad steel wire

Abstract

The utility model relates to power transmission technical field discloses a kind of aluminium-clad steel wire, including core material and outer layer, so outer layer is wrapped on core material, core material and outer layer are respectively steel core wire and aluminium layer, aluminium layer outer surface is equipped with a layer of wear layer, steel core wire surface is coated with transition layer, and core material is overall special-shaped. By setting transition layer on the surface of steel core wire, the interface embrittlement caused by mutual diffusion of aluminum and iron atoms during high-temperature processing or use can be effectively inhibited, the interface stability and bonding strength under high temperature are significantly improved, a wear-resistant layer is provided on the surface of the aluminum layer, which can avoid acid rain and other extreme environments, prevent corrosion, effectively prevent the aluminum layer surface from being worn in high-wear environments, significantly extend the replacement cycle, reduce maintenance costs, improve power grid safety, effectively improve the overall wear resistance of the wire rod and improve the overall stability, thereby extending the overall replacement cycle of the wire rod and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of power transmission technology, specifically to an aluminum-clad Invar wire. Background Technology

[0002] Aluminum-clad Invar wire is a type of wire with Invar as the center wire and aluminum as the outer layer. However, when using previous aluminum-clad Invar wires, the aluminum layer and Invar were directly coated, resulting in lower strength and a tendency to split. Furthermore, the outer surface of the aluminum layer lacked a wear-resistant layer, making it prone to friction during use and reducing the lifespan of the wire.

[0003] Document CN 118471587 A discloses an aluminum-clad Invar core heat-resistant aluminum alloy stranded wire and its preparation method, comprising a center core, a steel-aluminum hybrid stranded layer concentrically stranded on the center core, a wrapping layer concentrically wrapped around the steel-aluminum hybrid stranded layer, and a stranded wire layer concentrically stranded around the wrapping layer; the center core is an aluminum-clad Invar wire; the steel-aluminum hybrid stranded layer comprises several aluminum-clad Invar wires and several heat-resistant aluminum alloy round wires, wherein the aluminum-clad Invar wires do not contact each other; the wrapping layer is a hollow semi-conductive strip; and the stranded wire layer comprises several heat-resistant aluminum alloy profiles. This structure has poor wear resistance and a short service life.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned issues, this utility model discloses an aluminum-clad Invar wire, which effectively improves the overall wear resistance and stability of the wire, thereby extending the overall replacement cycle and reducing maintenance costs.

[0006] The technical solution of this utility model is: aluminum-clad Invar wire, including core material and outer layer, so the outer layer is wrapped on the core material, the core material and the outer layer are respectively Invar core wire and aluminum layer, the outer surface of the aluminum layer is provided with a wear-resistant layer, the surface of Invar core wire is covered with a transition layer, and the core material is irregular in shape.

[0007] Preferably, the Invar core wire is a single or multiple wires. When there are multiple Invar core wires, they are twisted together to form the center core.

[0008] By adopting the above technical solution, when there are multiple Invar core wires, the flexibility and resistance to bending fatigue of the entire aluminum-clad Invar wire can be effectively improved.

[0009] Preferably, the transition layer is metal.

[0010] Preferably, the metal is nickel or copper, and the transition layer is 0.1% to 2% of the radius of the Invar core wire.

[0011] By adopting the above technical solutions, nickel or copper can effectively suppress the interfacial embrittlement caused by the mutual diffusion of aluminum and iron atoms during high-temperature processing or use, and significantly improve the interfacial stability and bonding strength at high temperatures.

[0012] Preferably, the wear-resistant layer is a ceramicized alumina film and a conductive coating.

[0013] Preferably, the wear-resistant layer is 5% to 15% of the thickness of the aluminum layer.

[0014] By adopting the above technical solution, the wear-resistant layer on the outside of the aluminum layer can not only avoid acid rain and other corrosion in some extreme environments, but also effectively prevent the aluminum layer surface from being worn in high-wear environments, significantly extending the replacement cycle, reducing maintenance costs, and improving power grid security.

[0015] Preferably, the Invar core wire is trapezoidal or parallelogram-shaped.

[0016] By adopting the above technical solution, the core materials are tightly interlocked, minimizing the gaps between them. This not only improves the material utilization rate of aluminum-clad Invar wire, but also significantly improves the overall torsional resistance of the wire, thereby enhancing the overall stability of the structure.

[0017] The advantages of this utility model are as follows: 1. By setting a transition layer on the surface of Invar core wire, this utility model can effectively suppress the interfacial embrittlement caused by the mutual diffusion of aluminum and iron atoms during high-temperature processing or use, and significantly improve the interfacial stability and bonding strength at high temperatures.

[0018] 2. This utility model sets a wear-resistant layer on the surface of the aluminum layer, which can not only avoid acid rain and other corrosion in some extreme environments, but also effectively prevent the surface of the aluminum layer from being worn in high-wear environments, significantly extending the replacement cycle, reducing maintenance costs, and improving power grid safety.

[0019] 3. In this utility model, the Invar core wire and the aluminum layer are connected by a transition layer, which can improve the adhesion and prevent breakage and separation after a long period of use.

[0020] 4. This utility model can effectively improve the overall wear resistance and stability of the wire, thereby extending the overall replacement cycle of the wire and reducing maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the Z-shaped core wire structure of this utility model; Figure 2 This is a schematic diagram of the trapezoidal core wire structure of this utility model.

[0022] The components are: 1. Invar core wire, 2. transition layer, 3. aluminum layer, and 4. wear-resistant layer. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] like Figure 1-2 As shown, the aluminum-clad Invar wire includes a core and an outer layer. The outer layer is wrapped around the core. The core and the outer layer are Invar core wire 1 and aluminum layer 3, respectively. A wear-resistant layer 4 is provided on the outer surface of the aluminum layer 3. The surface of Invar core wire 1 is covered with a transition layer 2. The core is irregularly shaped.

[0025] The Invar core wire 1 can be a single or multiple wires. When there are multiple Invar core wires 1, they are twisted together to form the center core. When there are multiple Invar core wires 1, the flexibility and resistance to bending fatigue of the entire aluminum-clad Invar wire can be effectively improved.

[0026] The transition layer 2 is a metal, which is either nickel or copper. The transition layer 2 is 0.1% to 2% of the radius of the Invar core wire 1. Nickel or copper can effectively suppress the interfacial embrittlement caused by the mutual diffusion of aluminum and iron atoms during high-temperature processing or use, and significantly improve the interfacial stability and bonding strength at high temperatures.

[0027] The wear-resistant layer 4 is a ceramicized alumina film and a conductive coating. The wear-resistant layer 4 is 5% to 15% of the thickness of the aluminum layer 3. The wear-resistant layer 4 on the outside of the aluminum layer 3 can not only avoid acid rain and other corrosion in some extreme environments, but also effectively prevent the aluminum layer surface from being worn in high-wear environments, significantly extending the replacement cycle, reducing maintenance costs, and improving power grid security.

[0028] The Invar core wire 1 is trapezoidal or parallelogram shaped, with the core materials tightly interlocked to minimize the gaps between them. This not only improves the material utilization rate of aluminum-clad Invar wire, but also significantly improves the overall torsional resistance of the wire and enhances the overall stability of the structure.

[0029] Using aluminum-clad Invar wire can effectively improve the overall wear resistance and stability of the wire, thereby extending the overall replacement cycle and reducing maintenance costs.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. An aluminum clad invar wire comprising a core material and an outer layer, so that the outer layer is wrapped around the core material, the core material and the outer layer being an invar core wire and an aluminum layer, respectively, characterized in that: The outer surface of the aluminum layer is provided with a wear-resistant layer, the surface of the Invar core wire is covered with a transition layer, and the core material is irregularly shaped.

2. The aluminum clad steel wire of claim 1, wherein: The Invar core wire can be a single wire or multiple wires. When there are multiple Invar core wires, they are twisted together to form the center core.

3. The aluminum clad steel wire of claim 1, wherein: The transition layer is metal.

4. The aluminum clad steel wire of claim 3, wherein: The metal is nickel or copper, and the transition layer is 0.1% to 2% of the radius of the Invar core wire.

5. The aluminum clad steel wire of claim 3, wherein: The wear-resistant layer is a ceramicized alumina film and a conductive coating.

6. The aluminum clad steel wire of claim 1, wherein: The wear-resistant layer is 5% to 15% of the thickness of the aluminum layer.

7. The aluminum clad steel wire of claim 1, wherein: The Invar core wire is trapezoidal or parallelogram-shaped.

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