Tin-coated copper plated aluminium magnesium metal recombination line and production process thereof

Abstract

The invention discloses a tinning copper-clad aluminum and magnesium composite wire, which includes a copper layer coated on an inner core layer which is an aluminum-magnesium core made of aluminum-magnesium alloy; the copper layer is externally coated with a tinned layer. The production method of the invention is as follows: pretreating the stretchability of an aluminum-magnesium alloy rod; scrubbing, cleaning and drying the aluminum-magnesium alloy rod; brushing the aluminum-magnesium alloy rod and tightly wrapping and welding copper belt on the outside of the aluminum-magnesium alloy rod at the same time; and drawing the wrapped and welded composite rod to the required size; annealing in a tubular furnace tube, and cleansing with a promoter groove, hot tinning and fine drawing the tin plating model and winding after a product is finished finally. The invention has the advantages of convenient preparation as well as simple and reasonable process. The conductive and mechanical properties of the composite wire is as well as those of a copper wire; the shielding effect of the composite wire is superior to that of a copper wire and an aluminum-magnesium alloy wire, and the property of signal transmission is better than that of copper wire. The invention has low cost and can save numerous scarce copper resources, and can be an upgraded product of a pure copper line.

Description

technical field [0001] The invention relates to a metal composite wire and a production method thereof, in particular to a metal composite wire product using copper-clad aluminum and a production method thereof. Background technique [0002] At present, many high-end products or important equipment use pure copper as the wire in many places. Copper wire has good electrical conductivity and excellent mechanical properties, so it has been widely used for a long time. However, copper wire has high quality, scarce resources, and is expensive, so the cost of use is relatively high. Compared with copper wire, aluminum wire is light in weight and has better electrical conductivity, but poorer mechanical properties. In addition, the tin-plated pure copper wire currently used is heavy because of its weight. Although this metal composite wire has good electrical conductivity, signal transmission performance and mechanical properties, but because the inner core is all pure copper, the ...

AI Technical Summary

Problems solved by technology

However, copper wire has high quality, scarce resources, and high price, so the cost of use is high. Compared with copper wire, aluminum wire is light in weight and has better electrical conductivity, but poor mechanical properties.

In addition, the tin-plated pure copper wire currently used is heavy because of its weight. Although this metal composite wire has good electrical conductivity, signal transmission performance and mechanical properties, but because its inner core is all pure copper, the production cost is low. and costly to use