Tandem rolling process of roughing rolling unit

Abstract

The invention provides a tandem rolling process of a roughing rolling unit. The tandem rolling process comprises the following process steps: performing width rolling on strip steel in the step I, performing thickness rolling on the strip steel respectively in the step II and the step III, performing the width rolling on the strip steel in the step IV, performing the thickness rolling on the strip steel respectively in the step V and the step VI, performing the width rolling on the strip steel in the step VII, and performing the thickness rolling on the strip steel in the step VIII to form a strip steel semi-finished product. The tandem rolling process has the advantages that the process steps are compact, so that the efficiency is improved, the loss is less, the cost is reduced, and the benefit is further increased.

Description

technical field [0001] The invention relates to a steel manufacturing process, especially a continuous rolling process of a rough rolling mill. Background technique [0002] With the development of modern industry, the demand for steel materials in industrial production is increasing, which has given birth to and promoted the development of steel manufacturing, especially the manufacture of steel plates. After nearly a century of practice and development, hot-rolled strip steel Remarkable achievements have been made in process technology equipment and control technology; in the prior art, reversible rolling is generally used in the process layout of the roughing unit of the hot-rolled strip production line, usually a width-controlled vertical roll mill and a thickness-controlled flat roll mill. Steel billets are reciprocally rolled. Since the deformation of strip steel billets is reciprocated by the two rolling mills, the rolling mills work for a long time and have a large b...

AI Technical Summary

Problems solved by technology

[0002] With the development of modern industry, the demand for steel materials in industrial production is increasing, which has given birth to and promoted the development of steel manufacturing, especially the manufacture of steel plates. After nearly a century of practice and development, hot-rolled strip steel Remarkable results have been achieved in process technology equipment and control technology; the existing technology generally adopts reversible rolling in the process layout of the roughing unit of the hot-rolled strip steel production line, usually a width-controlled vertical roll mill and a thickness-controlled flat roll mill. Steel billets are reciprocally rolled. Since the deformation of strip steel billets is reciprocated by the two rolling mills, the rolling mills work for a long time and have a large bearing capacity, which affects the life of the rolling mills. At the same time, this process arrangement has low working rhythm and low work efficiency. The heat loss of the billet is large, which affects the subsequent processing, thus affecting the output of the strip steel plant

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