Processing technology of tensile composite conductor for cable and composite conductor

A processing and composite technology, which is used in cable/conductor manufacturing, metal/alloy conductors, and reducing the size of conductors/cables. , There are difficulties in large-length manufacturing, so as to ensure the consistency of appearance quality and outer diameter, the processing process is simple and practical, and the outer diameter control effect is good.

Pending Publication Date: 2021-03-12
TONGYONG TIANJIN ALUMINUM ALLOY PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to effectively solve the technical problems of poor electrical and mechanical properties of aluminum conductor cables, as well as heavy weight and high cost of copper conductors, a cable product suitable for multi-industry and multi-field applications has been developed. The current application date is 2019.11.22, and the publication number is CN110828025A. In the Chinese patent titled "A Copper-clad Aluminum Alloy Composite Conductor and Processing Technology for Aerospace Cables", a conductor with high electrical conductivity, high tensile strength and good stability and its processing technology are disclosed. However, the conductor has the following problems in actual production:
[0003] 1. It adopts the process of metal casting, drawing, annealing and tinning, and coats a layer of copper conductor on the surface of the aluminum conductor (called bimetallic wire in the industry), and then performs the conventional drawing and annealing process of the copper conductor to form a single wire However, the process of metal casting and drawing consumes a lot of energy, and the bimetals are prone to breakage and unstable wire diameters due to their different elongation properties during the drawing process;
[0004] 2. It is difficult to connect the ends of bimetallic materials, and it is not easy to connect, and it is difficult to manufacture large lengths;

Method used

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  • Processing technology of tensile composite conductor for cable and composite conductor
  • Processing technology of tensile composite conductor for cable and composite conductor
  • Processing technology of tensile composite conductor for cable and composite conductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Such as figure 1 As shown in Fig. 1, a processing technology for tensile composite conductors for cables, including stranding treatment and annealing treatment, the stranding treatment adopts 19 strands or 37 strands of regular stranding, and arranges them in 3 layers through layered abnormal pay-off racks Aluminum alloy monofilament 1 and copper monofilament 2 supply twisted wires for the stranding machine, which are twisted into a conductor whose inner layer is aluminum alloy monofilament 1 and outer layer is copper monofilament 2, wherein the layered The different-moving pay-off frame 3 controls the different tensions of each layer of monofilament pay-off.

[0070] At the same time, according to the cross-sectional area specification of the composite conductor that needs to be processed, when the cross-section is small, the regular stranding method of 19 strands (ie 1+6+12) is adopted, and the inner layer is aluminum alloy monofilament 1 and the outermost layer is C...

Embodiment 2

[0117] Such as figure 1 As shown, the difference from Example 1 is that the aluminum alloy monofilament 1 is prepared by the following method:

[0118] S1: Smelting, put the aluminum ingot and the alloy mixed material into the smelting device for smelting to obtain molten aluminum alloy, wherein the mass fraction of each element of the alloy mixed material is: Si=0.10%, Fe=0.5%, Cu=0.2%, Mg=0.05%, Zn=0.05%, B=0.02%, the rest are Al and unavoidable trace impurities, and the total content of impurity elements is 0.08%, in addition, the mass fraction of Li element is 0.03%, and the mass fraction of Ga element 0.03%;

[0119] S2: Casting, introducing the molten aluminum alloy into the casting device for casting to obtain aluminum alloy rods;

[0120] S3: Rolling, rolling the aluminum alloy rod into an aluminum alloy rod;

[0121] S4: Wire drawing, so that the aluminum alloy rod is drawn into an aluminum alloy monofilament 1 through multiple wire drawing equipment such as a larg...

Embodiment 3

[0125] Such as figure 1 As shown, the difference from Example 2 is that in the preparation of the aluminum alloy monofilament 1, the step S1: smelting, the aluminum ingot and the alloy mixed material are put into the smelting device for smelting to obtain the molten aluminum alloy, wherein the alloy mixed The mass fraction of each element of the material is: Si=0.05%, Fe=0.6%, Cu=0.2%, Mg=0.03%, Zn=0.03%, B=0.005%, the rest are Al and unavoidable trace impurities, and the impurities The total element content is 0.085%, and the mass fraction of Li element is 0.03%, and the mass fraction of Ga element is 0.03%.

[0126] Further, the stranded conductor is annealed at a high temperature of 350°C for 6 hours to obtain a composite conductor. After annealing, the tensile strength of the composite conductor reaches 300MPa, and the elongation at break can reach more than 15%, which is better than that of aluminum Alloy stranded conductors and copper stranded conductors.

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Abstract

The invention provides a processing technology of a tensile composite conductor for a cable and the composite conductor, the processing technology comprises stranding processing and annealing processing, the stranding processing adopts a 19-strand or 37-strand regular stranding mode, aluminum alloy monofilaments and copper monofilaments are arranged in a layered manner through a layered transaction pay-off rack, stranded wires are supplied to a stranding machine, the inner layer of the conductor is an aluminum alloy monofilament, the outer layer of the conductor is a copper monofilament, and the layered transaction pay-off rack controls the pay-off tension of each layer of monofilament to be different. By adopting the processing technology, preparation of the composite conductor of which the inner layer is the aluminum alloy monofilament and the outermost layer is the copper monofilament can be realized, the structural stability of the composite conductor is ensured, the whole processing technology process is simple and practical, and the percent of pass of finished products is high.

Description

technical field [0001] The invention relates to the technical field of conductors for cables, in particular to a processing technology for tensile composite conductors for cables and the composite conductor. Background technique [0002] In order to effectively solve the technical problems of poor electrical and mechanical properties of aluminum conductor cables, as well as heavy weight and high cost of copper conductors, a cable product suitable for multi-industry and multi-field applications has been developed. The current application date is 2019.11.22, and the publication number is CN110828025A. In the Chinese patent titled "A Copper-clad Aluminum Alloy Composite Conductor and Processing Technology for Aerospace Cables", a conductor with high electrical conductivity, high tensile strength and good stability and its processing technology are disclosed. However, the conductor has the following problems in actual production: [0003] 1. It adopts the process of metal casti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01B13/02H01B1/02H01B5/10H01B9/00C22F1/04C22C21/00C21D9/52
CPCC21D9/525C22C21/00C22F1/04H01B1/02H01B1/023H01B5/10H01B9/006H01B13/0003H01B13/0006H01B13/0036H01B13/0207
Inventor 邢如玉那希洋宋书亚李建民
Owner TONGYONG TIANJIN ALUMINUM ALLOY PROD CO LTD
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