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Production method of alloy cable

A production method and cable technology, which is applied in the direction of cable/conductor manufacturing, electrical components, circuits, etc., can solve the problems of affecting the compression coefficient, high equipment requirements, and complicated procedures, so as to increase the gap filling degree and improve the compression coefficient , Improve the effect of compression coefficient

Inactive Publication Date: 2015-07-08
SICHUAN MOTIAN XLPE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the secondary compression stranding of special-shaped wire can achieve a high compression coefficient, this method has the following defects: a. The requirements for equipment are very high, and the process is complicated; b. The compressed core wire is connected to the terminal It is easy to cause unstable connection, and the frequency of accidents is relatively high
In the prior art, the inner layer and the middle layer mostly adopt structures such as 1+6, 2+8, 3+9, 4+10, 5+11, etc. The applicant found that when using the structure of 2+N, the middle 2 The deformation of a round wire into a semicircle is quite difficult for equipment tooling and processing, and will affect the improvement of the compression coefficient
If the structure of 3+N is adopted, the cable conductor is not easy to bend after being pressed tightly due to the stability of the triangle, which has a great impact on the creep resistance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take the aluminum alloy rod, use the aluminum drawing machine and the wire drawing die to draw the alloy rod into an aluminum alloy wire, and the diameter becomes smaller; then the thinned aluminum alloy wire is subjected to an annealing process, that is, it is treated at a temperature of 360°C 12h, get qualified conductor wire.

[0022] Take qualified conductor wires, use a wire twisting machine to cooperate with a stranding mold, and twist the conductor wires into a double-layer cable including an inner layer and a middle layer. Among them, there is 1 conductor in the inner layer, and the pitch of 5 conductors in the middle layer is 8 times the diameter.

[0023] At the outlet of the stranded wire mold, use 75% alcohol to carry out spray cold treatment.

Embodiment 2

[0025] Take the aluminum alloy rod, use the aluminum drawing machine and the wire drawing die to draw the alloy rod into an aluminum alloy wire, and the diameter becomes smaller; then the thinned aluminum alloy wire is subjected to annealing process, that is, it is treated at a temperature of 370°C 10h, get qualified conductor wire.

[0026] Take qualified conductor wires, use a wire twisting machine to cooperate with a stranding mold, and twist the conductor wires into a double-layer cable including an inner layer and a middle layer. Among them, the pitch of the 4 conductor wires in the inner layer is 10 times the diameter after twisting, and the pitch of the 8 conductor wires in the middle layer is 8 times the diameter.

[0027] At the outlet of the stranded wire mold, use 95% alcohol to carry out spray cold treatment.

Embodiment 3

[0029] Take the aluminum alloy rod, use the aluminum drawing machine and the wire drawing die to draw the alloy rod into an aluminum alloy wire, and the diameter becomes smaller; then the thinned aluminum alloy wire is subjected to annealing process, that is, it is treated at a temperature of 380°C 6h, get qualified conductor wire.

[0030] Take a qualified conductor wire and use a stranding machine to cooperate with the stranding mold. The angle of the horn outlet of the stranding mold is 30 degrees. The conductor wires are twisted into a double-layer cable consisting of a nickel layer and an intermediate layer. Among them, there is 1 conductor wire in the inner layer, and the pitch of 5 conductor wires in the middle layer is 8 times the diameter.

[0031] At the outlet of the stranded wire mold, use 85% alcohol to carry out spray cold treatment.

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PUM

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Abstract

The invention discloses a production method of an alloy cable. The method comprises a conductor drawing process, a single wire annealing process and a conductor stranding process. According to the conductor stranding process, annealed conductor wires are stranded through a mould to form the cable comprising an inner layer, a middle layer and an outer layer, wherein in stranding, the pitch of the conductor wires of the inner layer and the middle outer layer is 8-12 times the diameter of the conductor wires of the inner layer and the middle layer, and the pitch of the conductor wires of the outer layer is 6-8 times the diameter of the conductor wires of the outer layer. By means of the method, the effective current carrying capacity of the cable can be increased, the laying cost can be lowered, and the boundary dimension of the cable can be reduced.

Description

technical field [0001] The invention relates to a processing method for cables, in particular to a production method for alloy cables. Background technique [0002] Alloy cables are widely used due to their high strength and electrical properties. For example, the conductor of an aluminum alloy cable is an alloy material conductor formed by adding trace amounts of iron, silicon, magnesium, boron, manganese, vanadium, titanium, rare earth and other elements to aluminum; and after processing. Aluminum alloy conductors greatly improve the properties of aluminum such as bending, corrosion resistance, machining, heat resistance, mechanical strength, and electrical properties. Aluminum alloy cables have been used for more than 40 years. Its appearance has greatly reduced the cost of users and improved the safety of products. [0003] Cable ampacity refers to the amount of current that a cable line passes when transmitting electric energy. Under thermal stability conditions, the ...

Claims

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Application Information

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IPC IPC(8): H01B13/02
Inventor 褚彥兴
Owner SICHUAN MOTIAN XLPE CABLE