Single-surface galvanized steel plate surface protection process

Abstract

The invention relates to a single-surface galvanized steel plate surface protection process. The single-surface galvanized steel plate surface protection process comprises the following specific steps: (1) steel is received and inspected; (2) dust particles on the surfaces of steel plates are cleaned through pretreatment to guarantee the surface cleanness of the steel plates; and the lower end surfaces and two sides of the steel plates are fixed through a fixing device 1; (3) degreasing treatment: a dipping method is used in degreasing; the temperature is controlled within 50-60 DEG C; and removed grease is prevented from attaching on the surfaces of the steel plates again; (4) hot galvanization is performed; and (5) drying is performed. The single-surface galvanized steel plate surface protection process solves the problems of need of manual movement of the steel plates, need of manual protection of galvanized end surfaces of the steel plates, nonuniform moving speed of the steel plates caused by manual control, incapability of guaranteeing the coating uniformity of acid-resistance substances, imprecise manual protection of the steel plates and incapability of guaranteeing no influence on the galvanized end surfaces of the steel plates by the acid-resistance substances due to wrong operation of the galvanized end surfaces of the steel plates.

Description

technical field [0001] The invention relates to the technical field of galvanized steel sheets, in particular to a single-sided galvanized steel sheet surface protection process. Background technique [0002] Galvanized steel sheet refers to a steel sheet coated with a layer of zinc on the surface. Galvanizing is an economical and effective anti-corrosion method that is often used. About half of the world’s zinc production is used in this process. The method of single-sided galvanized steel sheets includes the following steps: steel incoming inspection, pre-treatment, coating Acid-resistant substances, degreasing, galvanizing and other processes, wherein in the pretreatment step, before the step of degreasing, a layer of acid-resistant substances is coated on the side of the steel plate that does not want to be galvanized, and then the side coated with acid-resistant substances The steel plate is subjected to degreasing, galvanizing and other treatments in sequence, and the...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a surface protection process for single-sided galvanized steel sheets, which can solve the problem that the existing single-sided galvanized steel sheets need to be manually controlled to move the steel sheets during the pre-galvanizing process, and the steel sheets need to be manually adjusted. The end face of the galvanizing operation is protected, and the uneven moving speed of the steel plate is manually controlled, which cannot ensure the uniformity of the acid-resistant material coating. The steel plate needs to be affected by the end face of the galvanizing operation, and the normal galvanizing operation cannot be performed. It is necessary to manually recover the excess acid-resistant substances on the surface of the steel plate. The operation is complicated, the labor intensity is high and the work efficiency is low. It can realize the pretreatment of single-sided galvanized steel plate The function of accurate and uniform coating of acid-resistant substances will not affect the single-sided galvanizing operation of the steel plate, and can accurately protect the steel plate, and has the advantages of simple operation, low labor intensity and high work efficiency.

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