A production method for copper-coated aluminum material

Abstract

The invention discloses a producing method for copper coated aluminum row profile, and the method comprises following steps in turn: 1) cleaning, 2) drying, 3) head rolling, 4) clearance drawing, 5) bimetal combining furnace heating, 6) high frequency induction heating, 7) hot drawing, 8) heat preserving, 9) oxide layer washing and 10) packing. Beneficial effects of the invention are: the metal is not oxidized during drawing. The high frequency induction skin effect enables two kinds of metal with significantly different melting points reaching the critical point of composite metal metallurgy integrating temperature simultaneously, so a permanent compact metallurgical combining is realized between the two kinds of metals. The density of the profile in the invention is only 36.5% to 41.6% of that of pure copper rows, the length of the profile is 2.45 to 2.70 times of that of pure copper rows, the tensile strength of the profile is over 1.6 to 2 times of that of pure copper rows, and the specific resistance is between 0.027310 ohm question mark mm2/m(-40 Celsius system) and 0.041506 ohm question mark mm2/m(70 Celsius system).

Description

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AI Technical Summary

Benefits of technology

This technology helps remove impurities from the surfaces of alloys made up of both materials without affecting their properties or causing damage they would otherwise have happened when drawn together. By applying an acidic cleaner containing water onto these areas after it has been pulled out, we get ridges where there may still remain some small bumps left over due to insufficient coolant flow caused by poor air circulating inside the system. These tiny bumpings help create strong connections between them.

Problems solved by technology

Technological Problem addressed by this patented study relates to improving the efficiency and quality of producing copper/clad alloys with improved properties such as higher electric conduction rates or lower resistivity values compared to traditional techniques like casting and extrusion processes.