Automatic control technology of black oxidation copper foil in supplying copper ions and equipment used thereby

Abstract

The invention discloses an automatic control technology of a black oxidation copper foil in supplying copper ions. The invention also discloses equipment used by the technology, in order to provide an automatic control technology that when electrolytic copper foil is subjected to black oxidation, parameters are set according to different technologies, the copper ions are compensated automatically, thereby achieving the aim of stabilizing the copper concentration, the technology is ensured to be stable, and color quality of the copper foil caused by unstable copper ions is prevented from being abnormal. The technical point comprises the following steps of: 1) starting up a liquid supplying circulating pump, thus the black oxidation electrolytic liquid passes through a black oxide electrolytic groove, and then backflows to a black oxidation liquid storage tank; 2) detecting the copper concentration of the black oxidation liquid storage tank after the circulating is determined to be normal, and meanwhile determining the electroplating current; and then detecting the copper concentration of the black oxidation liquid storage tank and the copper concentration of a copper dissolving tank; 3) collecting data, and calculating the consumption quantity of the copper ions per hour; and 4) starting up a micro type diaphragm pump, setting the time, and thereby achieving quantitative uniform supplement. The automatic control technology of the black oxidation copper foil in supplying the copper ions and the equipment used by the method belong to the technical field of copper foil manufacturing.

Description

technical field [0001] The invention discloses an automatic control process when copper ions are replenished, specifically, an automatic control process when blackened copper foil is replenished with copper ions. The invention also discloses equipment used in the process, which belongs to the technical field of copper foil manufacturing. Background technique [0002] The copper ion of electrolytic copper foil is controlled within the range of 1g / l by the blackening process. When the 6g / l process is selected, the production control is limited to the range of 5.5-6.5g / l. When the fluctuation range is larger, it will appear The color difference changes, resulting in unstable product quality. Generally, the blackening process uses a current of 1000-1600A and a production line speed of 15-20m / min. The consumption of copper ions is as small as 1-3kg of copper per hour. The process requires regular replenishment of copper ions to ensure process stability. Otherwise, copper will be ...

AI Technical Summary

Problems solved by technology

Traditional methods use corrosion-resistant 316L pumps or titanium pumps for pump-assisted liquid supply circulation and installation of flowmeters, but these devices have poor control accuracy in the blackening solution, and it is difficult to stably replenish 1-3kg of copper per hour to the blackening system , causing the production process to be very unstable, the operation adjustment lagging behind, and also causing the quality to be unstable; the product quality varies greatly, often due to the shutdown adjustment phenomenon after the copper ion concentration exceeds the process range

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