Moderate-intensity high-conductivity aluminium alloy material

Abstract

The invention discloses a moderate-intensity high-conductivity aluminium alloy material. An aluminium alloy rod for shielding consists of the following components in parts by weight: 0.3 to 0.5 percent of iron, 0.3 to 0.3 percent of magnesium, 0.1 to 0.2 percent of silicon, 0.03 to 0.5 percent of rare earth mixture, 0.02 to 0.04 percent of copper, not smaller than 98.5 percent of aluminium, wherein the sum of content of all the components is 100 percent; rare earth elements consist of lanthanum, cerium and scandium; the lanthanum, the cerium and the scandium are mixed according to a proportion of 14:(5 to 7):(0.9 to 1.2) in parts by weight to form the rare earth elements; the type of the aluminium is LHA3-GD; the lanthanum, the cerium and the scandium are mixed according to a proportion of 14:6:1 in parts by weight to form the rare earth elements. According to the moderate-intensity high-conductivity aluminium alloy material, the conductivity is high; the tensile strength fulfills the aim of providing a high-performance moderate-intensity aluminium alloy wire for construction of a national power grid; conductivity reaches over 59.2 percent IACS (International Annealed Copper Standard); tensile strength is 240 to 255MPa; elongation reaches 2.0 percent to 3.5 percent.

Description

technical field [0001] The invention relates to a high-conductivity aluminum alloy material, in particular to a medium-strength high-conductivity aluminum alloy material. Background technique [0002] With the rapid development of my country's economic construction, the demand for electricity is increasing year by year. How to make full use of existing line corridors and line facilities, transmit as much power as possible, reduce line loss, and improve power transmission efficiency have become issues that must be considered by power operation departments. [0003] At present, steel-cored aluminum stranded wires are commonly used in my country's high-voltage, ultra-high voltage and ultra-high voltage overhead transmission lines. The production and application technology of this type of wire is basically mature, but its transmission line loss is high, corrosion resistance is poor, and the current carrying capacity is low. The use of all-aluminum alloy conductors (AAAC) on the...

AI Technical Summary

Problems solved by technology

In recent years, a lot of research has been carried out on medium-strength all-aluminum alloy wires in China. However, due to the large gap between domestic production technology and foreign countries, domestic medium-strength all-aluminum alloy wire products are mostly heat-treated, with low conductivity and production processes. Complex and high cost; foreign countries generally use non-heat-treated aluminum alloys, with simple production process and low cost