Aluminum alloy for capacitor shell and aluminum alloy strip preparation method thereof

Abstract

The invention discloses an aluminum alloy for a capacitor shell and an aluminum alloy strip preparation method thereof. The aluminum alloy comprises the following components in percent by weight: 0-0.05% of Mg, less than 0.01% of Zn, 0.14-0.24% of Cu, 0.50-0.80% of Fe, less than 0.16-0.30% of Si, 1.0-1.20% of Mn, .015-0.03% of Ti and the balance Al. The aluminum alloy strip preparation method comprises the following steps of casting the aluminum alloy for the capacitor shell into a cast ingot; cutting the cast ingot into one segment or a plurality of segments; soaking the cut cast ingot and then carrying out hot rolling on the cast ingot to obtain a hot-rolled panel; carrying out first time intermediate annealing treatment on the hot-rolled panel; carrying out cold rolling treatment on thepanel after the first time intermediate annealing treatment; carrying out second time intermediate annealing treatment on the panel after cold rolling treatment; and carrying out cold finish rollingon the panel after second time intermediate annealing treatment by means of a roller to prepare a finished product. The aluminum alloy for the capacitor shell has the characteristics of excellent stamping machinability and excellent paint adhesion.

Description

technical field [0001] The invention relates to the field of capacitor processing, in particular to an aluminum alloy for a capacitor shell and a method for preparing the aluminum alloy strip. Background technique [0002] With the continuous application of electronic products, the demand for capacitors used in electronic products is also increasing, and the mechanical properties of the aluminum alloy materials used in capacitor shells have not been effectively controlled, resulting in low strength, and the combination with the paint film Poor consistency in capacity and type change, so it is easy to cause poor packaging of capacitors, and the bottom of the capacitor is prone to bulging or the packaging paint film falls off, making the capacitor prone to scrapping. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes an aluminum alloy for a capacit...

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Problems solved by technology

[0002] With the continuous application of electronic products, the demand for capacitors used in electronic products is also increasing, and the mechanical properties of the aluminum alloy materials used in capacitor shells have not been effectively controlled, resulting in low strength, and the combination with the paint film Poor consistency in capacity and type change, so it is easy to cause poor packaging of the capacitor, and the bottom of the capacitor is prone to bulging or the packaging paint film falls off, making the capacitor prone to scrapping

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