Method and device for improving surface cross wrinkles of cold or hot rolled strip steel

Abstract

The invention relates to a method and device for improving the surface cross wrinkles of cold or hot rolled strip steel. The method comprises the following steps that an anti-cross-wrinkle roller is arranged on a strip steel uncoiling point of an unit uncoiler; and the position of a direction turning roller or the position of the strip steel uncoiling point is adjusted, so that the strip steel isenabled to generate a preset wrap angle on the anti-cross-wrinkle roller; a vertical downward pressure is applied to the anti-cross-wrinkle roller, so that the strip steel is subjected to primary reverse bending before passing through the direction turning roller; and uncoiling production is carried out on cold or hot rolled strip steel coils. According to the method and device, the anti-cross-wrinkle roller is arranged on the unit uncoiler, the anti-cross-wrinkle roller is always pressed on the uncoiling point of the strip steel in the strip steel uncoiling process, under the action of reverse bending force, a stable and uniform plastic deformation area is formed by the strip steel in a wrap angle area of the anti-cross-wrinkle roller, a yield platform of the strip steel can be eliminated, so that obvious cross wrinkle defects will not occur; and the roller diameter of the roller through which the strip steel passes in rear working procedures is larger than the roller diameter of theanti-cross-wrinkle roller, and a new cross wrinkle defect cannot be generated in the subsequent procedures as well.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method and a device for improving the transverse folding and printing of the surface of cold and hot-rolled strip steel. Background technique [0002] In the production of cold and hot-rolled strip, the cold-rolled strip is annealed, and the hot-rolled strip is cooled after rolling. Due to the pinning effect of the Coriolis gas mass formed by interstitial atoms on the slip, yield will occur. The platform makes the cold and hot-rolled strip easy to produce horizontal folding in the subsequent production, which has a serious impact on the surface quality of the strip and causes many quality objections. SUMMARY OF THE INVENTION [0003] In order to solve the above-mentioned technical problems, a method and device for improving the cross-folding on the surface of cold and hot-rolled strip steel are provided, aiming at improving the cross-folding and printing on the surface of ...

AI Technical Summary

Problems solved by technology

[0002] In the production of cold and hot-rolled steel strips, the cold-rolled steel strip has been annealed, and the hot-rolled steel strip has been cooled after rolling. Due to the pinning effect of the Coriolis air mass formed by the interstitial atoms, yielding will occur. Platform, resulting in cold and hot-rolled strips prone to horizontal folds in subsequent production, which has a serious impact on the surface quality of strips and caused many quality objections

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