Ultrathin steel strip hot rolling process

Abstract

The invention discloses an ultrathin steel strip hot rolling process. The process comprises the following steps: plate blanks are heated, roughly rolled and finely rolled; the upper pressure range ofupper and lower working rollers of a final frame of a finish rolling mill is controlled within 0.1-0.15 mm, and the elevation range of rollers of the final frame is within -5-10 mm; cooling: the fine-rolled strip steel is cooled by a laminar cooling method; and winding: the cooled strip steel is wound as plate coils through a winding machine. In the ultrathin steel strip hot rolling process, as the upper pressure range of the upper and lower working rollers of the final frame of the finish rolling mill is controlled within 0.1-0.15 mm, and the elevation range of the rollers of the final frameis within -5-10 mm, the head shape of the strip steel discharged from the finish rolling mill is guaranteed, the head shape of the strip steel discharged from the finish rolling mill is not upwards turned and downwards buckled, the floating phenomenon of the strip steel is effectively reduced, and the caused material waste and product rolling mark defect are reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, and more specifically, relates to a hot-rolled ultra-thin steel strip process method. Background technique [0002] When the hot rolling production line produces ultra-thin strip steel, the strip steel needs to go through a laminar flow cooling system after heating, rough rolling, and finish rolling, and enter the coiler for coiling to form the final product. [0003] However, the strip enters the laminar flow cooling stage after rolling in the finishing mill, and the floating phenomenon will occur on the laminar flow cooling roller table. Especially for the strip steel of extremely thin specification for hot continuous rolling, there is generally floating phenomenon. Due to the extremely thin thickness and extremely fast speed of the ultra-thin hot-rolled strip steel, the strip steel floats, unwinds, and folds on the roller table. After entering the coiler for coiling, the subsequent process...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a hot-rolled ultra-thin steel strip process method, which can effectively solve the problem caused by the floating phenomenon in the production of ultra-thin specification strip steel in the hot continuous rolling production line. The problem of material waste and product roll printing defects

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