Novel aluminum alloy wire rod for cable, and preparation method and application thereof

Abstract

The invention relates to the field of non-ferrous metal wire rods, especially to a novel aluminum alloy wire rod for a cable and a preparation method thereof. The aluminum alloy wire rod for the cable comprises, by weight, 0.05 to 0.15% of silicon, 0.5 to 0.9% of iron, 0.1 to 0.3% of copper, 0.05 to 0.08% of zinc, 0.05 to 0.2% of boron, 0.01 to 0.04% of antimony, 0.05 to 0.08% of nickel, 0.05 to 0.09% of zirconium and 0.05 to 0.08% of rare earth, with the balance being aluminum and unavoidable impurities. According to the aluminum alloy wire rod for the cable provided by the invention, through adjustment of the content of the rare earth element in the wire rod and introduction of other doping elements, the prepared aluminum alloy wire rod has conductivity of more than 62% IACS, maximum tensile strength of 135 MPa and elongation of about 30%, and particularly, the aluminum alloy wire rod has an obviously improved anti-creeping property and substantially enhanced comprehensive electrical properties.

Description

technical field [0001] The invention mainly relates to the field of non-ferrous metal wires, in particular to a new type of aluminum alloy wire for cables and its preparation method and application. Background technique [0002] Due to the excellent electrical properties of copper, most of the current domestic market uses copper as the main conductor material to prepare cables. However, due to the influence of various reasons such as lack of resources, the price of copper is getting higher and higher, which largely limits the application and development of copper core cables. Therefore, in recent years, many researchers have devoted themselves to finding a cheap and high-quality new material that can replace copper as the cable core material. [0003] Because aluminum resources are abundant and the cost is low, it will be a trend to use aluminum instead of copper as a conductor for wires and cables. Under the same volume, the actual weight of aluminum alloy is about one-th...

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Problems solved by technology

[0004] However, when ordinary aluminum wires are used as wires and cables, their elongation, flexibility and creep resistance cannot meet the requirements, and the safety and stability of use are low.

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