Medium-strength aluminum alloy single wire

Abstract

The invention discloses a medium-strength aluminum alloy single wire. An aluminum alloy rod for shielding consists of the following components in parts by weight: 0.3-0.5% of iron, 0.3-0.3% of magnesium, 0.1-0.2% of silicon, 0.03-0.5% of rare earth mixture, 0.02-0.04% of copper, 0.08-0.12% of beryllium, and aluminum not lower than 98.4%; the sum of all the components is 100%; the rare earth element consists of lanthanum, cerium and scandium; the lanthanum, the cerium and the scandium are mixed in proportion by weight parts of 14: 5-7: 0.9-1.2 to form the rare earth element; the model number of aluminum is LHA3-GD; and the lanthanum, the cerium and the scandium are mixed in proportion by weight parts of 14: 6: 1 to form the rare earth element. The medium-strength and high-electric-conductivity aluminum alloy material is high in electric conductivity; the tensile strength is high up to achieve a purpose of providing a high-performance and medium-strength aluminum alloy lead to the construction of the state grid corporation of China; the electric conductivity reaches above 69.2% IACS; the tensile strength is 240-255 MPa; and the ductility reaches 2.0-3.5%.

Description

technical field [0001] The invention relates to a high-conductivity aluminum alloy material, in particular to a medium-strength aluminum-aluminum alloy single wire. 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 trans...

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