Comprehensive acid washing device for strip steel

Abstract

The invention discloses a comprehensive acid washing device for strip steel. The device comprises an acid washing tank; a transmission rubber roller is arranged in the acid washing tank, and is provided with the strip steel; the strip steel is vertically arranged; acid washing sprayers are arranged on left and right two sides and the upper side of the strip steel; an acid liquid rail is formed rightly below the strip steel; the acid washing sprayers are connected with acid mist tanks; and a waste liquid tank is formed in the bottom of the acid washing tank. Through the mode, the comprehensive acid washing device for strip steel, provided by the invention, adopts different acid washing modes for different oxidation degrees of all directions of the strip steel, adopts immersion type acid washing for the bottom edge of the strip steel, adopts acid mist spraying acid washing for the middle of the strip steel, is high in pertinency, effectively reduces the phenomenon of under acid washing or over acid washing of the strip steel, and improves the strip steel acid washing quality.

Description

technical field [0001] The invention relates to the field of strip steel pickling devices, in particular to an all-round pickling device for strip steel. Background technique [0002] Strip steel derusting is mainly carried out by physical and chemical methods. Among them, the chemical method is used for derusting by pickling line. The derusting speed is fast and the derusting is thorough, so it is welcomed by the strip rolling processing industry. Pickling can wash away defects such as oxide scale and rust spots on the surface of raw materials, making the surface smooth and clean. It can not only avoid accidents such as broken belts and steel sticking during rolling, but also make the surface of finished products smooth without black spots and rust. [0003] However, the existing pickling methods often have certain deficiencies. For example, due to the different oxidation degrees of the strip surface in various directions, the phenomenon of under-pickling and over-pickling ...

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Problems solved by technology

[0003] However, the existing pickling methods often have certain deficiencies. For example, due to the different oxidation degrees of the strip surface in various directions, the phenomenon of under-pickling and over-pickling of the strip is caused, and the oxidation degree at the edge of the strip is higher than that of the strip. The middle part of the steel has a high degree of oxidation. When pickling, it cannot meet the different pickling degrees in different directions at the same time, and the edge part is satisfied. The strip steel stays in the acid solution for too long, so that the middle part is under the action of the acid solution. The phenomenon of gradually becoming rough and pockmarked, or satisfying the middle part of the strip, and the oxidized part at the edge of the strip is not cleaned, resulting in defects such as wave shape or buckling of the product

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