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Copper-based alloy for cable shielding

A copper-based alloy and cable shielding technology, which is applied to power cables with shielding layers/conductive layers, etc., can solve the problems of poor performance stability and low strength of cable shielding tapes, and achieve improved welding performance and oxidation resistance, and tensile strength Effects of increased strength and hardness, and increased recrystallization temperature

Inactive Publication Date: 2012-03-21
YUNNAN NEW COPPERSMITH INDAL
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  • Abstract
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Problems solved by technology

[0007] The technical solution of the present invention is that, in order to solve the above problems, the present invention designs a high-conductivity, medium-strength cable shielding copper-based alloy material to solve the problems of poor performance stability and low strength of the cable shielding tape, and to improve the strength of the cable shielding tape and yield, as well as the purpose of energy saving and consumption reduction in the production process

Method used

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Embodiment Construction

[0016] The present invention will be further described below by embodiment. According to the composition shown in Table 1, melt copper in an intermediate frequency induction furnace, add Ag for refining, adjust the temperature to the casting temperature, add the prepared CuLi, CuLa, CuY alloys, stir evenly, cast billets, and perform conventional processing according to the pure copper processing technology Processing, making samples, measuring its recrystallization temperature, tensile strength and hardness, and carrying out welding performance and oxidation resistance tests. The results are compared with the national standard brand products T2 and TP1, which are widely used now. The results are listed in Table 2.

[0017] It can be seen from the results in Table 2 that the electrical conductivity of the copper-based alloy of the present invention is close to that of the prior art, but its comprehensive mechanical properties and oxidation resistance are significantly better tha...

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Abstract

The invention discloses a copper-based alloy for cable shielding. The copper-based alloy is characterized in that the alloy comprises the following components by weight percent: 0.03-0.30% of Ag, 0.005-0.015% of Li, 0.05-0.20% of La, 0.05-0.20% of Y and the balance Cu. The alloy has high softening temperature; and compared with the prior art, the tensile strength and hardness are obviously increased and the weldability and oxidation resistance are also obviously increased, and the rate of the finished product and the energy consumption per ton product are obviously increased. The copper-based alloy is mainly used for power cable shielding.

Description

technical field [0001] The invention relates to a copper-based alloy, in particular to a medium-strength, high-conductivity copper-based alloy used in the manufacture of cable shielding tapes. Background technique: [0002] To improve the ability of power cables to resist electromagnetic interference and ensure the reliability and stability of power supply lines, most cables are produced using high-conductivity material shielding technology. According to the ordering requirements of cable manufacturers, most cable shielding tapes are T2 or TP1 copper tapes in soft state (M state), and there are the following problems in the production and use of cable shielding tapes: [0003] 1. The cable shielding tape is easily oxidized and discolored during transportation and storage, resulting in poor electrical conduction at the spiral lap interface and being scrapped; [0004] 2. The cable shielding tape often has quality problems such as breakage, wrinkles and lapped edges during th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00H01B9/02
Inventor 夏文华梅政
Owner YUNNAN NEW COPPERSMITH INDAL
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