Method of adopting multi-roll mill to roll three-layer composite extremely thin belt

Abstract

The invention discloses a method of adopting a multi-roll mill to roll a three-layer composite extremely thin belt. The method comprises the steps of applying tension, carrying out surface treatment on the extremely thin belt, carrying out roll-in treatment on a middle layer extremely thin belt, and carrying out washing, drying and rolling on the surface of the extremely thin belt. According to the method, an ultrasonic auxiliary polishing device is adopted to remove an oxide film on the surface of the extremely thin belt, so that surface breakdown holes and other damage to the extremely thinbelt caused by a conventional method is avoided; roll-in treatment is carried out on the middle layer extremely thin belt to prepare a micro-bulge to enable the micro-bulge to form strong stress at alocal position to strengthen mechanical occlusion during the rolling and recombination process, and in addition, the shape of a bonding interface is improved to be three-dimensional from the traditional two dimensions to improve the bonding strength of all metal surfaces; during the rolling process, pulse current is applied, based on the special structure of the micro-bulge, a tiny gap is createdbetween layers of the extremely thin belt, the point discharge effect is generated after electrifying, and efficient rolling bonding is realized under a smaller reduction rate. The method can realizehigh-strength bonding of the three-layer composite extremely thin belt under the smaller reduction rate and can be used for industrial volume production of composite belts.

Description

technical field [0001] The invention relates to the field of composite rolling of ultra-thin strips, in particular to a method for rolling a three-layer composite ultra-thin strip with a multi-roll mill. Background technique [0002] With the rapid development of high-tech fields such as micro-electromechanical and micro-manufacturing, components tend to be miniaturized, and the demand for high-quality ultra-thin strips is growing rapidly. The performance of single-layer ultra-thin strips has limitations, and composite ultra-thin strips can combine the advantages of different metal materials. For example, the aluminum / steel / aluminum ultra-thin composite foil fully retains the advantages of aluminum in light weight, high strength, heat dissipation, and decoration. The comprehensive mechanical properties and processing properties of the material can be widely used in various 3C electronic products, such as LCD panels, 5G equipment, heat exchangers, power station air cooling, ...

AI Technical Summary

Problems solved by technology

However, this method is used for grinding the surface of the ultra-thin strip, which will lead to obvious breakdown and holes on the surface, resulting in the destruction of the ultra-thin strip and reducing the bonding stability of the metal interfaces of the composite ultra-thin strip.

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