Plate strip surface scale removal device and method

Abstract

A plate strip surface scale removal device is used for removing scales on the surface of a plate strip and comprises a removing device used for removing the scales, a gathering device used for gathering the scales, and a dust removing device. According to a scale removal method, through the cooperative work of the removing device, the gathering device and the dust removing device, continuous scale removal work of removing, gathering and dust removing is conducted. According to the plate strip surface scale removal device and method, a continuous dry type flexible brush roll scale removal device and method for plate strip surface scale removal are provided. A plate strip continuously passes through the part between brush rolls arranged up and down, and the scales on the surface of the plate strip are removed through the brush rolls rotating at a high speed. Each brush roll is composed of a spirally-arranged strip-shaped abrasive belt. The strip-shaped abrasive belts rotating at a high speed collide with the surface of the plate strip, sand grains on the abrasive belts grind the scales on the surface of the plate strip away, the scales become fine powder dust and are removed through the gathering device and the dust removing device, and the plate strip surface scale removal work is finished.

Description

technical field [0001] The invention belongs to the field of heat treatment production in rolling, and in particular relates to a strip surface descaling device and a method thereof. Background technique [0002] In the process of rolling and heat treatment, the surface of the strip will inevitably produce a certain thickness of oxide scale, that is, iron scale. For carbon steel strips, the scale is mainly composed of Fe2O3, Fe3O4 and FeO, with a thickness of 7-15 μm, and the surface scale is usually removed by pickling (hydrochloric acid). For stainless steel and special steel plates, in addition to iron oxide, there are oxides such as NiO, Cr2O3, etc. These oxides are very dense and are very firmly combined with the steel plate body. Usually, most of the scale is removed by shot blasting, and then the Pickling with strong acid (hydrofluoric acid, nitric acid + sulfuric acid). The pickling process is inefficient, takes up a lot of space, and causes great damage to the env...

AI Technical Summary

Problems solved by technology

[0005] First of all, this utility model is different from the application occasion and the purpose of the invention. Secondly, in practice, the brush roller mentioned in the utility model is a wire brush, which still has the defect of scratching the surface of the strip in reality. Finally, the utility model The new model does not further explain the gas technology links and auxiliary equipment, and there are differences from the purpose to the specific technology in this application

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