Composite core half-hard aluminum conductor and manufacturing method thereof

Abstract

The invention discloses a composite core half-hard aluminum conductor and a manufacturing method thereof. The manufacturing method comprises the following steps: I, processing so as to manufacture an aluminum rod; II, drawing the aluminum rod into hard aluminum wires; III, performing high-temperature thermal treatment on the hard aluminum wires so as to obtain half-hard aluminum wires; IV, concentrically twisting a plurality of half-hard aluminum wires and carbon fiber composite cores, thereby obtaining the finished carbon fiber composite core half-hard aluminum conductor. As the composite cores and the intermediate state aluminum wires are combined, and a specific process is provided, the produced carbon fiber composite core half-hard aluminum conductor has the characteristics of large pulling strength, large draw-weight ratio, good conductivity, relatively large surface hardness, low probability of scratching in laying, small sagging and the like, and the line security can be greatly improved.

Description

technical field

[0001] The invention relates to a composite core semi-rigid aluminum stranded wire and a manufacturing method thereof. Background technique

[0002] Because of its light weight, high tensile strength, high temperature resistance, high specific modulus, and small linear expansion coefficient, fiber-reinforced resin-based composite wires have attracted widespread attention and gradually been popularized and applied in power transmission.

[0003] At present, one kind of fiber-reinforced resin-based composite wire is mainly an annealed aluminum wire with a fiber-reinforced resin-based composite core. The wire structure is a soft aluminum conductor outside the composite core. Because the resistivity of the soft aluminum conductor is lower than that of the ordinary hard aluminum conductor, the conductivity can reach 62.5-63.5% IACS, and its conductivity is increased by 1% compared with the ordinary hard aluminum wire. ~2%. According to statistics, if the conduct...