Apparatus and technology for controlling and improving plating solution PH value on fingerprint resistant production chain

Abstract

The invention provides a technical method for controlling and raising the PH value of galvanizing solution on a fingerprint resistant continuous and automatic production line of the electro-galvanizing and roller coating of a rolled plate; the galvanizing solution rich in zinc ions enters a galvanizing bath from a dezincification bath; the technique is characterized in that: after entering the galvanizing bath from the dezincification bath, the galvanizing solution enters a circulating tank after going through an on-line filtering machine and then enters the galvanizing bath from the circulating tank; the galvanizing solution in the galvanizing bath returns to the galvanizing bath through the circulating tank; and the galvanizing solution is electrolyzed by the current density of 0.1A / dm<2> to 0.3A / dm<2> in an electrobath. The electrobath is internally provided with three anodes and two cathodes at intervals. The technical proposal has the advantages of not only removing hazardous metal impurities, but also increasing dezincification speed, particularly properly raising the PH value, increasing the overpotential of hydrogen, reducing hydrogen evolution, fining electro-galvanizing layers and reducing electric energy consumption, thereby greatly improving product quality.

Description

Technical field [0001] The invention relates to an improvement to a coil electrogalvanizing-roller coating anti-fingerprint continuous automatic production line and a coil electrogalvanizing-roller coating anti-fingerprint continuous automatic production process. Background technique [0002] The main structure of the production line of anti-fingerprint plate (that is, the continuous automatic line of coil electrogalvanizing-roller coating anti-fingerprint plate) is to use the modern transmission mode to organically connect the two surface treatment process sections of electrogalvanizing-roller coating on one production line. Under the control of the computer, it is ensured that the coil can run continuously at a constant speed, synchronously, centered, and parallelly from uncoiling to winding, and complete the degreasing, activation, electroplating, and rolling of the coil in an all-round and high-standard manner during the operation. Surface treatment such as coating, one-...

AI Technical Summary

Problems solved by technology

[0012] Control of PH value In the past, aluminum sulfate and boric acid were added to the conventional zinc sulfate galvanizing solution to buffer the PH value, which had little effect on the fast automatic assembly line, and the effect was weakened if it was added less. The sediment of the bath solution, so it is not suitable to use

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