Method for manufacturing moderate intensity aluminium alloy wire with 57% electric conductivity

Abstract

The invention provides a method for manufacturing a moderate intensity aluminium alloy wire with 57% electric conductivity, and relates to a method for manufacturing a moderate intensity aluminium alloy wire of which the electric conductivity reaches 57% (IACS), which comprises the following steps of: (1) selecting aluminum matrixes and aluminum moderate alloy ingots; (2) carrying out on-the-spot sample analysis and regulation; placing the selected aluminum ingots into a shaft furnace to be melted to obtain an aluminum liquid; and refining with a refining agent; (3) casting and crystallizing: enabling the aluminium alloy liquid in a tilting holding furnace to pass through a trough, and filtering with a ceramic filter plate, and adding a rear earth to ensure the rear earth content to be 0.05-0.15%; continuously casting in an aluminium alloy continuous casting machine to form the aluminium alloy ingots; and rolling the aluminium alloy ingots to obtain moderate intensity aluminium alloy rods by an aluminium alloy continuous mill; (4) solutionizing and quenching: carrying out homogenizing heat treatment on the aluminium alloy rods; and (5) drawing, ageing and twisting: drawing the aluminium alloy rods treated by the former process into the aluminium alloy wires with the required diameter on an aluminium alloy drawing machine, and twisting the aluminium alloy wires by using a frame-type wire twisting machine to manufacture the moderate intensity aluminium alloy wires with 57% electric conductivity in IACS.

Description

technical field [0001] The invention relates to a method for manufacturing a medium-strength aluminum alloy wire with a conductivity of 57% (IACS), which is a high-conductivity aluminum alloy manufacturing technology. More precisely, it is a method of manufacturing high-conductivity medium-strength aluminum alloy wire. Background technique [0002] In the past, my country did not develop and apply medium-strength aluminum alloys for electrical conduction, but with the development of overhead lines to large capacity and ultra-high voltage, the use of split wires and wires with large cross-sections and heat resistance has gradually developed. In this way, not only heat-resistant aluminum alloy wires are required, but also medium-strength or high-strength aluminum alloy wires are required to replace ordinary steel-cored aluminum stranded wires, medium-strength or high-strength aluminum alloy stranded wires to increase the carrying capacity of the wires. [0003] At present, in...

AI Technical Summary

Problems solved by technology

However, due to the defects of manufacturing equipment and the instability of manufacturing process, the main properties of high-conductivity medium-strength aluminum alloy wire, conductivity and tensile strength, have not yet reached the goal of stable production.

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