Manufacturing method of hot-dip galvanized steel sheet

Abstract

The invention relates to a manufacturing method of a hot-dip galvanized steel sheet; steel sheet processing and manufacturing equipment is used; the equipment comprises a soaking tank and a rectangular box arranged in the soaking tank; a supporting device is arranged in the soaking tank; a scraping device is arranged in the soaking tank; a two-way screw, guide rods, T-shaped plates, H-shaped plates and supporting columns are matched, so that the two sets of T-shaped plates move oppositely under the thread driving of the two-way screw and the guiding effect of the guide rods, and therefore the H-shaped plates and the supporting columns are driven to move oppositely; a steel plate to be machined is supported; a supporting position is conveniently adjusted; second scraping plates can be driven by electric sliding blocks to do front-back reciprocating linear motion in the width direction of moving holes; at the moment, bubbles or impurities at the left end and the right end of a to-be-machined steel plate are scraped away through the two second scraping plates; the left end and the right end of the to-be-machined steel plate make full contact with zinc liquid; and the quality of a zinc dipping layer is improved.

Description

technical field [0001] The invention relates to the technical field of steel plate processing, in particular to a method for manufacturing a hot-dip galvanized steel plate. Background technique [0002] The steel plate is a flat steel material that is poured with molten steel and pressed after cooling. The steel plate has a flat shape, a rectangular shape, and can be directly rolled or cut from a wide steel strip. Steel plates are classified according to the surface coating, including galvanized steel plates, tin-plated steel plates, lead-plated steel plates, plastic composite steel plates, etc. [0003] Hot-dip galvanizing, also known as hot-dip galvanizing, is a method in which steel components are immersed in molten zinc to obtain a metal coating. With the rapid development of the shipbuilding industry, high-voltage power transmission, transportation, and communications, the requirements for the protection of steel parts are getting higher and higher, and the demand for...

AI Technical Summary

Problems solved by technology

[0004]The hot-dip galvanizing layer formation process is the process of forming an iron-zinc alloy between the iron substrate and the outermost pure zinc layer, and the iron-zinc alloy is formed on the surface of the workpiece during hot-dip galvanizing The alloy layer makes the iron and the pure zinc layer well bonded. When the iron workpiece is immersed in the molten zinc liquid, the impurities or chemical reactions on the surface will cause bubbles to appear on the surface of the iron workpiece, which may cause the surface of the iron workpiece to fail. The galvanizing effect is unsatisfactory if it is in full contact with the zinc solution; because the temperature of the iron workpiece rises sharply or deforms during immersion plating, the iron workpiece needs to be placed for a long time after being salvaged. After the galvanized iron workpiece gradually cools down, Unloading takes a lot of time and reduces work efficiency

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