Aluminum, ferrum and cobalt rare earth alloy conductor material for cable and manufacturing method thereof

Abstract

The invention discloses an aluminum, ferrum and cobalt rare earth alloy conductor material for a cable and a manufacturing method thereof. The contents of the alloy components are Fe, Co, lanthanum-enriched rare earth, Si, less than 0.01% by weight of other single impurity, wherein the total amount is less than 0.15% by weight, and the balance of aluminum and inevitable impurities. The manufacturing method comprises the following steps of: adding an aluminum ingot with the purity greater than 99.70% by weight into a vertical furnace; adding an aluminum and ferrum intermediate alloy, an aluminum and cobalt intermediate alloy and an aluminum rear earth intermediate alloy at different temperature stages for smelting; and after purifying the melt, rolling the casting pieces into an alloy. Theelectric conductivity of the aluminum alloy conductor is greater than or equal to 60% IACS, the tensile strength of a hard alloy wire reaches 240Mpa, the tensile strength and the coefficient of elongation of a soft alloy wire reach 120Mpa and 30% respectively, the limit of yielding is 100-115Mpa, and the aluminum alloy conductor can be pulled to an aluminum alloy wire with the thickness of 0.3mm or less.

Description

technical field [0001] The invention belongs to the field of wire and cable industry, and in particular relates to an aluminum-iron-cobalt rare earth alloy conductor material for cables and a manufacturing method thereof. Background technique [0002] China's annual copper consumption exceeds 5 million tons, and the copper consumption in the wire and cable field accounts for about 70% of the total copper consumption. It is a large copper consumer. With the depletion of China's copper mine resources, 80% of China's copper mines need to rely on imports , and with the rising price of copper, using aluminum to save copper is an inevitable trend in the development of non-ferrous metals in China. Since it is proved to be unfeasible in many occasions to simply replace copper conductors with pure aluminum conductors, obtaining a technological breakthrough is the key to solving this problem. [0003] In the past, there were many deficiencies in pure aluminum used as wire and cable c...

AI Technical Summary

Problems solved by technology

[0003] In the past, there were many deficiencies in pure aluminum used as wire and cable conductors, so it was rarely used for insulating wire cores. It was even more unfeasible to draw thinner wires for wiring, magnet wires, and communication cables. The strength and elongation cannot meet the requirements, and it is very difficult to draw it into 0.5mm or finer, unless the material and process are well controlled, it can be done

Therefore, there are great technical problems in using aluminum to save copper, and it is facing great difficulties to achieve a breakthrough.

[0004] Although there are many patents on aluminum alloys in China, they are basically used as overhead wires, and there are few patents on aluminum alloys for insulating cores, and there are even fewer reports on the use of Co elements in alloys.