Annealing method in the production of medium and high voltage electronic aluminum foil for high-capacity and high-strength capacitors

Abstract

The invention discloses an annealing method in the production of medium and high-voltage electronic aluminum foil for high-capacity and high-strength capacitors. The continuous air-cushion furnace adopts a belt type to perform intermediate annealing. The aluminum strip is heated evenly, and the heating time is controlled by the speed of the continuous air-cushion furnace. The time is stable and controllable, which ensures the consistency of grain recrystallization growth, the obtained structure is uniform, eliminates internal stress, and reduces the degree of work hardening of aluminum foil; the finished aluminum foil is annealed through a continuous air cushion furnace, and multi-zone different temperatures are used for annealing In this way, the recrystallization growth rate of the grains is controlled, ensuring that the non-cubic texture is transformed into a cubic texture, increasing the ratio of the cubic texture, and enriching trace elements on the surface to increase the corrosion porosity; Rapid cooling and winding to prevent surface damage caused by thermal adhesion.

Description

Annealing method in the production of medium and high voltage electronic aluminum foil for high capacity and high strength capacitors technical field The present invention relates to the technical field of high-voltage electronic aluminum foil processing, in particular to high-capacity high-strength capacitors with high Annealing methods in the production of piezo-electric foils. Background technique Miniaturization is the inevitable trend of the development of aluminum electrolytic capacitors, along with the rapid development of electrical and electronic industries, aluminum electrolytic capacitors Capacitors continue to develop towards high performance, miniaturization and integration, so it is necessary to improve the specific capacity of high-purity aluminum foil to meet the needs of aluminum electric To solve the demand for miniaturization of capacitors, it is also necessary to increase the output of pure aluminum foil to meet the increasing market demand. The a...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides an annealing method in the production of medium and high voltage electronic aluminum foils for high-capacity and high-strength capacitors, using a continuous air cushion furnace for homogenization and annealing for many times to improve the problem of uneven casting structure, thereby improving performance and cubic texture, to obtain a high-capacity high-strength high-voltage high-purity aluminum foil for capacitors, which not only improves the specific capacity, but also shortens the production cycle

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