High-conductivity flexible aluminium alloy material preparation method

Abstract

The invention relates to a high-conductivity flexible aluminum alloy material preparation method. The high-conductivity flexible aluminum alloy material preparation method comprises the following steps: heating and fusing aluminum ingots of which the impurity content meets the requirement, heating and fusing boron-aluminum alloy and ferro-aluminum alloy of which the mass percents are respectively 3 and 22 together with the aluminum ingots to form a mixed aluminum liquid, keeping the temperature of the aluminum liquid to be 700-720 DEG C in the fusing process, adding 10% rare earth-aluminum alloy in batches for melting, stirring the mixed aluminum liquid at the speed of 40 r/min; adopting nitrogen gas to uniformly blow a refining agent into the aluminum liquid; stirring, insulating, standing, removing impurities and casting to form aluminum ingot blanks; rolling the ingot blanks into aluminum alloy bars with the diameter of 9.5 mm through a rolling mill, and controlling the bar discharging temperature to be 250 DEG C-300 DEG C so as to prepare an aluminum alloy material. According to the invention, through the processes of melting, alloying, purifying, casting, rolling, quenching and the like, the aluminum conductivity is improved, the aluminum mechanical property is improved, and the aluminum alloy material for high-conductivity flexible cables are manufactured.

Description

technical field [0001] The invention relates to a method for preparing a highly conductive soft aluminum alloy material, which belongs to the technical field of electric cables. Background technique [0002] In 2011, in the machinery industry, cables became the second largest industry after automobiles, with an output value of more than 1.1 trillion yuan. However, copper is basically used as a conductor in traditional cable products. As a global strategic resource, copper is increasingly valued by countries and is constantly controlled through political, military, economic, diplomatic and other means. And my country is a country that is relatively scarce in copper resources, and its total reserves only account for about 5% of the world's reserves, and it is dominated by poor copper mines. In 2010, my country's copper consumption accounted for 60% of the world's total, and the cable (including motor) industry accounted for about 60% of my country's copper consumption, that i...

AI Technical Summary

Problems solved by technology

For example, the electrical conductivity is poor, and its electrical conductivity is generally only 58%; it is easy to break, and the pure aluminum single wire generally breaks after being bent 5 to 6 times, which brings inconvenience to the installation; , quickly oxidizes into a powdery object and loses the function of conducting electricity

Problems such as these have not been effectively resolved, hindering the process of replacing copper with aluminum as the main conductor