A pretreatment device for pickling steel coils

Abstract

The invention relates to a preprocessing device for steel coil pickling. The preprocessing device comprises a machine frame; a bending mechanism, a scale breaking mechanism, a cleaning mechanism and adriving mechanism are arranged in the length direction of the machine frame in sequence, wherein the cleaning mechanism comprises two scale breaking rollers which are rotationally connected to the machine frame and used for scraping a steel coil, and the two scale breaking rollers are located on the upper side and the lower side of the steel coil and rub against the upper side and the lower sideof the steel coil in the steel coil displacement process; the cleaning mechanism comprises washing pipes located on the upper side and the lower side of the steel coil, the two washing pipes communicate with a plurality of spray heads with openings facing towards the upper side and the lower side of the steel coil in the width direction of the machine frame, and the washing pipes are connected with a water pump; and the cleaning mechanism further comprises two wiping roller sets which are located on the rear sides of the washing pipes correspondingly and used for wiping the upper side and thelower side of the steel coil. The preprocessing device has the effects that scale on the surface of the steel coil is loosened before the steel coil is subjected to pickling, thus, the scale is cracked, and the follow-up pickling work effect is facilitated.

Description

technical field [0001] The invention relates to the technical field of steel pickling equipment, in particular to a pre-processing device for pickling steel coils. Background technique [0002] At present, the hot-rolled strip steel coil produced by the hot rolling mill is rolled and coiled. The iron oxide scale formed on the surface of the strip steel under corresponding conditions can firmly cover the surface of the strip steel and cover the strip steel. surface imperfections. From the perspective of steel rolling, if these strips with scale are directly sent to the cold rolling mill for rolling, many problems will be caused: first, rolling under the condition of a large amount of down pressure will compress the scale into the matrix of the strip steel, affecting the surface quality and processing performance of the cold-rolled sheet, and even causing waste products; second, the emulsion system that enters the cooling and lubricating roll after the oxide scale is broken w...

AI Technical Summary

Problems solved by technology

From the perspective of steel rolling, if these strips with scale are directly sent to the cold rolling mill for rolling, many problems will be caused: first, rolling under the condition of a large amount of down pressure will compress the scale into the matrix of the strip steel, affecting the surface quality and processing performance of the cold-rolled sheet, and even causing waste products; second, the emulsion system that enters the cooling and lubricating roll after the oxide scale is broken will damage the circulation equipment and shorten the service life of the emulsion; the third is damage Cold rolled rolls with high surface finish and processing accuracy and expensive

[0004] The above-mentioned existing technical solutions have the following defects: the iron oxide scale usually forms a tight layer structure on the surface of the steel coil, so that after the steel coil enters the pickling device, the acid solution needs to sequentially chemically remove the iron oxide scale from the outside to the inside. reaction, resulting in slower pickling efficiency

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