Metal plate passivation apparatus with lateral passivation assembly

Abstract

The invention provides a metal plate passivation device with a side passivation assembly, which includes a steel plate unwinding device, a steel plate, a coating passivation device, a drying device and a steel plate winding device, and the coating passivation device includes a The passivation coating assembly and the passivation solution preparation box are connected in turn by the pipeline, and the valve and circulation pump that can control the flow are correspondingly provided on the pipeline; there is also a supplementary passivation device between the coating passivation device and the drying device. The passivation assembly; the passivation coating assembly is arranged up and down for coating the upper and lower surfaces of the galvanized steel sheet, and the supplementary passivation assembly is arranged left and right for coating the left and right sides of the galvanized steel sheet. The invention has good passivation coating effect, simple structure, low equipment cost and simple maintenance.

Description

technical field [0001] The invention relates to a galvanized steel plate passivation equipment, in particular to a metal plate passivation equipment with side passivation components. Background technique [0002] Passivation is a method to transform the metal surface into a state that is not easily oxidized, thereby delaying the corrosion rate of the metal. After the steel plate is galvanized, its corrosion resistance is greatly improved, but it still cannot meet the needs of long-term use in a humid environment. To improve the durability of galvanized sheet, surface passivation treatment is also required. [0003] The most common passivation processes are spray and roller coating. Both the spray method and the roller coating method have unsatisfactory effects in application, especially when used for thicker galvanized sheets, color difference or yellow edge defects often occur. At the same time, the spraying method often has uneven spraying in practical applications, and...

AI Technical Summary

Problems solved by technology

Both the spray method and the roller coating method have unsatisfactory effects in the application, especially when used for thicker galvanized sheets, color difference or yellow edge defects often occur

At the same time, the spraying method often has uneven spraying in practical applications, and the pollution caused by the spraying process is relatively large, which is not environmentally friendly; while the roller coating method is often used on thick plates, the edge and side cannot be coated. , and the roller coating equipment is expensive, the process requires high precision, the maintenance is not easy, and the production cost is high

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