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Aluminum wire rod, aluminum twisted wire, coated electric wire, coated electric wire with crimp terminal, and CVT cable or CVT cable with crimp terminal

A technology for covering wires and crimping terminals, which is applied in the direction of power cables, insulated cables, cables, etc., and can solve problems such as reduced impact resistance, reduced conductivity, and reduced strength of crimped parts

Pending Publication Date: 2022-04-26
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in pure aluminum and aluminum alloy wires, there are problems of reduced electrical conductivity, reduced strength of the crimped portion, and reduced impact resistance at the crimped portion of the pure aluminum or aluminum alloy wire. Research

Method used

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  • Aluminum wire rod, aluminum twisted wire, coated electric wire, coated electric wire with crimp terminal, and CVT cable or CVT cable with crimp terminal
  • Aluminum wire rod, aluminum twisted wire, coated electric wire, coated electric wire with crimp terminal, and CVT cable or CVT cable with crimp terminal
  • Aluminum wire rod, aluminum twisted wire, coated electric wire, coated electric wire with crimp terminal, and CVT cable or CVT cable with crimp terminal

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Effect test

Embodiment 1～21

[0076] Using the molten metal of the composition shown in Table 1, the first annealing, cold wire drawing and contact annealing are carried out under the conditions of satisfying the crystal structure shown in Table 1, and the aluminum wire rods with the wire diameters and the number of wires shown in Table 2 are used Twisting, twisting, insulator coating, and sheathing processes to make covered wires, peel off the insulators and sheaths at both ends of the covered wires to partially expose the aluminum twisted wires, and crimp the terminals to the exposed parts to obtain crimped terminals. Covered wire. An aluminum terminal was used as the terminal of the connection member, and an oil compound containing zinc powder was sealed inside the tube portion of the terminal in order to ensure electrical contact with the exposed aluminum twisted wire. The crimp was set at 94% compression. The compressibility refers to the ratio of the cross-sectional area of ​​the aluminum conductor ...

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Abstract

The aluminum wire material has a composition containing 3.00 mass% or less of Fe, 0.20 mass% or less of Si, and further containing 0.010-0.500 mass% in total of one or more elements selected from the group consisting of Cu, Mn, Mg, Zn, Ti, B, V, and Ni, with the remainder being Al and unavoidable impurities, and in a region of 25 [mu] m * 60 [mu] m in a cross section perpendicular to the longitudinal direction, the thickness of the aluminum wire material is 10-30 [mu] m. The length obtained by adding all portions having a crystal orientation difference of more than 1 DEG and 15 DEG or less with respect to adjacent crystal grains is 0.6 mm to 4.8 mm, and the conductivity of the aluminum wire is 55% IACS or more.

Description

technical field [0001] The invention relates to an aluminum wire, an aluminum twisted wire, a covered electric wire, a covered electric wire with a crimping terminal, and a CVT cable or a CVT cable with a crimping terminal. Background technique [0002] When aluminum is used for power cables represented by underground power distribution lines such as CVT cables, pure aluminum with high electrical conductivity or aluminum alloys with thin additive elements are used in order to suppress Joule heat. On the other hand, the strength of such pure aluminum and aluminum alloy wires is lower than that of copper wires. [0003] For example, Patent Document 1 describes an aluminum alloy for wire rods containing Fe at 2.0% to 3.5% by mass, the balance being Al and unavoidable impurities, and Si at 0.2% to 1.0% by mass. In addition, Patent Document 1 describes an aluminum alloy wire rod having a structure including aluminum crystal grains and grains of an Al-Fe compound or an Al-Fe-Si c...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B5/08H01B7/00H01B9/00H01R4/18C22C21/00C22F1/00C22F1/04
CPCH01B1/023H01B9/006H01B7/0009H01B5/08H01R4/183C22C21/00C22F1/00C22F1/04C22F1/047C22C21/08C22C21/02H01R4/20H01R4/62
Inventor 关谷茂树吉田祥
Owner FURUKAWA ELECTRIC CO LTD