Copper-cladding aluminum wire, aluminum rod for copper-cladding aluminum wire and processing method thereof

Abstract

The invention discloses an aluminum rod for a copper-cladding aluminum wire, which comprises the following ingredients by weight percent: 95.3 to 94.9 percent of aluminum pig, 3 to 3.3 percent of magnesium and 1.7 to 1.8 percent of chromium. The invention also provides a processing method of the aluminum rod for the copper-cladding aluminum wire, which comprises the following steps that: 95.3 to 94.9 percent of aluminum pig and 1.7 to 1.8 percent of chromium are added, 3 to 3.3 percent of magnesium is added after the aluminum pig and the chromium are molten, water is discharged after multi-time foreign matter removal processing and after the heat is preserved for a period of time, and then the wire drawing processing and the wire take-up processing are carried out; and the above wire is annealed to standby use after being polished. The aluminum rod has excellent performance, firm metallurgical bonding between the aluminum rod and a copper layer can be realized, and the overall performance of the copper-cladding aluminum can be improved. The invention also provides a copper-cladding aluminum utilizing the aluminum rod.

Description

technical field [0001] The invention relates to the technical field of copper-clad aluminum, in particular to an aluminum rod used for a copper-clad aluminum wire, a processing method thereof, and a copper-clad aluminum wire made of the aluminum rod. Background technique [0002] As we all know, copper wire has good electrical conductivity, but it is expensive, but although the price of aluminum wire is lower, its conductivity is not as good as copper wire. With the continuous consumption of copper resources, the price of copper is getting higher, so people often choose copper-clad aluminum alloy wire instead of copper wire in the actual production and application of localization. [0003] In the prior art, the production methods of copper-clad aluminum wires include electroplating and cladding welding methods. The electroplating method is to coat a layer of copper on the surface of the aluminum core wire. The production of copper-clad aluminum by this method includes at le...

AI Technical Summary

Problems solved by technology

The electroplating method is to plate a layer of copper on the surface of the aluminum core wire. The production of copper-clad aluminum by this method includes at least the following defects: the production speed is too slow, it cannot meet the needs of high-level development, and wastes actual resources and resources; the performance of the coating is relatively hard, and the wire passes through The copper layer is easy to crack after bending; improper treatment of the plating solution will pollute the environment