Method for rolling copper-aluminum double-layer composite plate

Abstract

The invention discloses a method for manufacturing a copper-aluminum double-layer medium-thick composite plate through a cold rolling manner. The method comprises following steps: 1) cleaning an aluminum plate and a copper plate in an immersion manner, removing oil of the plates, drying the plates, and cleaning the composite surfaces of the plates; 2) stacking and compressing the copper plate and the aluminum plate, and riveting the plates at a rolling bite end; 3) rolling the copper-aluminum composite plate blank through a two-roller roughing mill; 4) rolling the copper-aluminum composite plate through a three-roller intermediate mill; 5) rolling the copper-aluminum composite plate through a four-roller finishing mill; 6) rolling the copper-aluminum composite plate through a six-roller finishing mill to reach the required thickness; and 7) annealing the copper-aluminum composite plate. According to the invention, rolling is carried out through the rolling mills provided with working rolls having different roll diameters, so that the plastic deformation is increased, the composite ratio is improved, and a plate shape problem of the copper-aluminum double-layer medium-thick composite plate is solved as the working rolls are different in linear speed.

Description

technical field [0001] The invention belongs to the technical field of preparation of copper-aluminum double-layer composite boards, and in particular relates to a method for producing copper-aluminum double-layer medium-thick composite boards by cold rolling. Background technique [0002] Copper and aluminum are the most commonly used conductive materials in the power and electrical industry, and they are also commonly used heat exchange materials in the world. In terms of conductivity, copper has advantages over aluminum, but the density of copper is 8.9 grams per cubic centimeter, which is higher than that of aluminum (2.7 grams per cubic centimeter. cubic centimeters), which means that the number of aluminum products of the same weight is much greater than that of copper products. In terms of heat transfer, the instantaneous heat absorption capacity of copper is 1.6 times faster than that of aluminum, but the heat dissipation speed is relatively slow. In addition, my count...

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Problems solved by technology

At present, copper-aluminum double-layer medium-thick composite panels are mainly produced by explosive composite method. Although the explosively composited copper-aluminum double-layer composite panels have good bonding performance, their mechanization degree is low, the working conditions are poor, and they are dangerous. The copper-aluminum double-layer composite board produced at the same time has the disadvantages of large residual stress and uneven surface

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