Manufacturing method for formed foil of electrolytic capacitor of energy-saving lamp

Abstract

The invention discloses a manufacturing method for a formed foil of an electrolytic capacitor of an energy-saving lamp. According to the manufacturing method, four-stage forming is carried out, and corresponding steps are adjusted, which comprises a one-time feed treatment step, a two-time phosphate treatment step, a three-time high-temperature treatment step all well as an additional step; and an oxidant is added in each stage of formation groove to improve process conditions of the formed foil in the production process, and further the chemical reaction temperature and the current density are reduced and the formation time is shortened. According to the manufacturing method disclosed by the invention, the time of each stage of formation time is shortened, electric energy consumed by producing the formed foil is saved by 10 percent and heat energy consumed by the formed foil is saved by 7 percent. The manufacturing method is high in production vehicle speed, high in efficiency and favorable in storage performance of products.

Description

technical field

[0001] The invention relates to a chemically formed aluminum foil for a capacitor, in particular to a manufacturing method for producing a chemically formed aluminum foil for an energy-saving lamp electrolytic capacitor. Background technique

[0002] The previous manufacturing method of chemical formation foil for medium and high voltage aluminum electrolytic capacitors is to immerse corroded aluminum foil with a purity of 99.99% in pure water at 95-100°C for 10 minutes, take it out and place it in 0.1wt% In an aqueous solution of adipic acid and 2wt% ammonium adipate, at 85°C, the current density is 20mA / (cm 2 ), the voltage is 200v, and the primary formation is 18 minutes; then placed in the aqueous solution of 7wt% boric acid and 0.4wt% ammonium pentaborate, at 85°C, the current density is 20mA / (cm 2 ) and a voltage of 430v, secondary formation for 18 minutes; then placed in an aqueous solution of 7wt% boric acid and 0.3wt% ammonium pentaborate, at ...