A kind of surface treatment process of galvanized steel sheet

Abstract

The invention relates to a galvanized steel sheet surface treatment process. The galvanized steel sheet surface treatment process comprises the following specific steps of (1) steel sheet uncoiling, wherein a steel sheet is driven to move at constant speed; (2) acid pickling treatment; (3) drying treatment; (4) steel sheet heating; (5) galvanizing machining, wherein the dried steel sheet is subjected to galvanizing machining work through a galvanizing work box under the action of uncoiling equipment, work troughs are arranged on the front side and the rear side of the galvanizing work box, a coating device is arranged on the inner wall of the upper end of the galvanizing work box, and a smearing device is arranged at the lower end of the galvanizing work box; and (6) galvanizing aftertreatment. According to the galvanized steel sheet surface treatment process, the problems that the thickness of steel sheet surface galvanizing cannot be effectively controlled during the galvanizing machining procedures of an existing galvanized steel sheet, the galvanized layer on the surface of the steel sheet is uneven, multiple times of detecting and machining are needed, the galvanized layer onthe surface of the steel sheet needs to be subjected to secondary treatment, the labor intensity is large, the precision is poor, and the work efficiency is low are solved, and the intelligent high-precision galvanizing work function of the galvanized steel sheet can be achieved.

Description

Technical field [0001] The invention relates to the technical field of galvanized steel sheets, in particular to a surface treatment process for galvanized steel sheets. Background technique [0002] Galvanized steel sheet is to prevent corrosion on the surface of the steel sheet and prolong its service life. The surface of the steel sheet is coated with a layer of metallic zinc. This kind of galvanized steel sheet is called galvanized sheet. Galvanized steel sheet can be obtained by various methods, including hot dip There are five main methods of galvanized steel sheet, alloyed galvanized steel sheet, electro-galvanized steel sheet, single-sided and double-sided differential galvanized steel sheet, alloy, and composite galvanized steel sheet. Hot-dip galvanized steel sheet immerses the thin steel plate into the molten zinc In the groove, make a thin steel plate with a layer of zinc adhered to the surface. At present, it is mainly produced by continuous galvanizing process, tha...

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a surface treatment process for galvanized steel sheets, which can solve the problem that the existing galvanized steel sheets cannot effectively control the galvanized thickness of the steel sheet surface during the galvanizing process, and the galvanized layer on the steel sheet surface is not Uniformity, multiple detection and processing are required, and secondary treatment of the galvanized layer on the surface of the steel plate is required. The labor intensity is high, the accuracy is poor, and the work efficiency is low. It can realize the function of intelligent high-precision galvanizing operation of galvanized steel plates. , no need for manual operation, no need for secondary processing of galvanized steel sheets, and has the advantages of low labor intensity, high precision and high work efficiency

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