Layered aluminum copper composite plate and preparation method thereof

Abstract

The invention discloses a layered aluminum copper composite plate and a preparation method thereof, which belong to the technical field of preparing composite plates. The layered aluminum copper composite plate is prepared by the preparation method comprising the following steps of: coating a pure copper layer on a pure aluminum substrate, wherein the pure aluminum substrate is a pure aluminum plate with the thickness of 5.0 to 10.0 mm, and the pure copper coating layer is a pure copper plate with the thickness of 1.0 to 2.0 mm; selecting the pure copper plate and the pure aluminum plate; polishing the surfaces to be compounded of the pure copper plate and the pure aluminum plate; assembling the well-polished pure copper plate and the pure aluminum plate, flatly spreading a prepared ammonium nitrate fuel oil explosive mixture on the upper surface of the pure copper plate, and performing explosive welding; performing annealing after the explosive welding; levelling the composite plate after the annealing; and examining the aluminum copper composite plate after levelling, and cutting out uncompounded or cracked parts on four edges of the composite plate to obtain the layered aluminum copper composite plate. Because the aluminum layer replaces part of the copper layer, compared with a copper plate with the same thickness, the aluminum copper composite plate has the characteristics of lighter specific weight and excellent electric conductivity of copper.

Description

technical field [0001] The invention belongs to the technical field of composite plate preparation, in particular to a layered aluminum-copper composite plate and a preparation method thereof. Background technique [0002] Copper has many excellent properties, such as excellent electrical and thermal conductivity, good plastic forming ability, high strength, corrosion resistance, high temperature resistance, etc., but it has a large specific gravity and high price; aluminum has a small specific gravity, low price and good ductility , Good corrosion resistance, but general electrical conductivity. [0003] How to combine the advantages of the two to prepare a layered aluminum-copper composite board has become an urgent problem in this technical field. [0004] Explosive welding is a process technology for manufacturing dissimilar metal layered composite panels, which has been widely used in the production of double or multilayer composite panels such as copper / steel, steel / s...

AI Technical Summary

Problems solved by technology

[0002] Copper has many excellent properties, such as excellent electrical and thermal conductivity, good plastic forming ability, high strength, corrosion resistance, high temperature resistance, etc., but it has a large specific gravity and high price; aluminum has a small specific gravity, low price and good ductility , Good corrosion resistance, but general electrical conductivity