Metal plate passivation apparatus with lateral passivation assembly

Abstract

The invention provides a metal plate passivation apparatus with a lateral passivation assembly. The metal plate passivation apparatus comprises a steel plate unreeling device, a steel plate, a coatingand passivation device, a drying device and a steel plate reeling device, wherein the coating and passivation device comprises a passivation and coating assemblies and a passivation solution preparing case which are connected with each other via pipelines, and the pipelines are correspondingly provided with valves capable of controlling flow and circulating pumps; supplementary passivation assembles are arranged between the passivation and coating device and the drying device; the passivation and coating assemblies are respectively arranged at an upper part and a lower part for coating of theupper and lower surfaces of the galvanized steel plate; and the supplementary passivation assembles are respectively arranged at a left part and a right part for coating of the left and right sides of the galvanized steel plate. The metal plate passivation apparatus with a lateral passivation assembly is good in passivation and coating effect, simple in structure, low in equipment cost and easy to maintain.

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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