Thermometal compound flat wire

Abstract

A thermometal compound flat wire is manufactured by the compounding of core layer metal of modified aluminium alloy and coating layer metal of copper, and is characterized in that interfaces of the core layer metal of the modified aluminium alloy and the coating layer metal of the copper are in metallurgical bonding; the purity of the copper is 99.95%-99.99%; the proportional range of the cross-sectional area of the coating layer metal of the copper is 15%-30%; the width of the copper-coated rare earth aluminum alloy flat wire is 30-200 mm, and the width-to-thickness ratio is 30:1. According to the flat wire, the interfaces of the copper and the aluminium reach the metallurgical bonding; the technological process is short, the production efficiency is high, and the product cost is low; the flat wire is suitable for large-scale and normalized industrial production; the length ratio of the flat wire to a pure copper wire is 2.5:1, namely, 1.58 ton pure copper can be saved when 1 ton copper-coated modified aluminium alloy compound conductor material is produced, so that the copper resource is effectively saved; the cost of downstream industry product is lowered.

Description

technical field

[0001] The invention belongs to the technical field of conductive materials, and in particular relates to a novel copper-clad modified aluminum alloy bimetal composite (bar) flat wire and a production method thereof. Background technique

[0002] In industrially developed countries abroad, since the 1960s and 1970s, the cladding method has been widely used to produce bimetallic composite wires such as copper-clad aluminum and copper-clad steel. The United States, Japan and other countries have formed large-scale industries, and each has its own patented technology with certain characteristics. For example: American Copewell Co., Ltd. uses its own patented technology to produce copper-clad aluminum wires. Before 1997, the company's copper-clad aluminum wires occupied the main domestic market; another example is Fujikura Electric Wire Co., Ltd. in Japan, which developed copper-clad aluminum wires in the 1970s. Composite wire, the small-diameter copper-clad alu...