Rare-earth aluminum alloy conductor for cable and manufacturing method thereof

Abstract

The invention discloses a rare-earth aluminum alloy conductor for a cable and a manufacturing method thereof. The rare-earth aluminum alloy conductor comprises the following components in percentage by weight: 0.05 to 0.15 percent of copper, 0.40 to 1.0 percent of ferrum, 0.03 to 0.15 percent of silicon, 0.02 to 0.12 percent of rare-earth elements and the balance of aluminum. The prepared rare-earth aluminum alloy conductor is subjected to tempering, the stress effect in the processes of drawing and stranding and the adverse effect of strain hardening on an organization structure of the conductor are improved, so that electric conductivity reaches and even exceeds 61 percent International annealed copper standard (IACS); and the elongation and flexibility of rare-earth aluminum alloy can be improved greatly, and the resistance of the conductor can be reduced by annealing treatment. According to the aluminum alloy conductor for the cable, the strength is improved 10 percent compared with pure aluminum, the elongation is 30 percent, the flexibility is 25 percent higher than that of a copper cable, and the resistance of the conductor is kept at a low level.

Description

technical field [0001] The invention belongs to the field of conductor materials for cables, and in particular relates to a rare earth aluminum alloy conductor for cables and a manufacturing method thereof. Background technique [0002] Over the years, Chinese people have been expecting to develop a conductor that can continue to implement the substitution of aluminum for copper, but they have not been able to make a breakthrough in technology, so they have not been able to realize this historic mission. In view of the many shortcomings of pure aluminum as a cable conductor, developed countries such as the United States and Canada have done a lot of research in this area, and developed aluminum alloy conductors in the late 1960s. Aluminum alloy conductors have been used in North America for more than 40 years. At the same time, it has been unanimously recognized by users in developed countries such as the United States and Canada. 90% of civil and industrial and commercial b...

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Problems solved by technology

[0002] Over the years, Chinese people have been expecting to develop a conductor that can continue to implement the substitution of aluminum for copper, but they have not been able to make a breakthrough in technology, so they have not been able to realize this historic mission.