Steckel mill rolled piece head-and-tail deviation control method

Abstract

The invention discloses a steckel mill rolled piece head-and-tail deviation control method which comprises the following steps that: based on existing equipment configuration, different modes are distinguished by integrating the rolling information of a steckel mill according to the rolled piece deviation and rough rolling force in the final step of rough rolling, then the deviation controlled by roll gaps on both sides of the steckel mill is determined, and roll gap setting control for preventing deviation is carried out. Through the method, the hand-and-tail deviation of strip steel can be reduced, shut-down accidents caused by the deviation of strip steel can be prevented, and the rolling stability of the steckel mill can be improved.

Description

technical field [0001] The present invention relates to the control technology of the steckel mill, more specifically, relates to a method for controlling the head and tail deviation of the rolled piece in the steckel mill. Background technique [0002] Steckel mill (STECKEL MILL), as one of the forms of hot strip rolling mill, has a history of more than 70 years since its birth. Over the years, through people's continuous improvement and improvement of the technology and equipment of the steel-steel rolling mill, the steel-steel rolling mill is being revived. Especially at present, iron and steel enterprises are under great pressure from resources, the environment and manufacturing costs, making this similar short-steel rolling mill The production technology of the process is further mature and practical. One of the technical advantages of the Steckel Mill is that since the coiling furnaces are installed at the front and rear of the rolling mill, it plays the role of heat ...

AI Technical Summary

Problems solved by technology

At present, a prominent problem that restricts the stable production of the steckel mill is: during the rolling process, the deviation of the head and tail of the rolled piece has always affected the normal rolling of the steckel mill.

Although these methods have achieved certain effects in the actual use process, since the control of the roughing mill and the control of the steckel mill are carried out separately, the information of the measuring instruments has not been fully shared, making it impossible for the steckel mill to predict rough rolling. Changes in the state of the intermediate slab, not to mention a reasonable predictive control

In addition, the state of the rolling process of the steckel mill is also constantly changing. These changes have brought a lot of uncertainty to the rolling process. At present, it is all achieved by operating experience and manual intervention, which has a certain degree of blindness. Good times and bad

[0006] To sum up, in the current rolling process of the steckel mill, the steel billet is pulled out from the heating furnace, rough rolled to the thickness of the finished product, and forms a certain head and tail shape. The target thickness, the various changes that occur in this series of hot processing and transmission processes are not ideal, and the occurrence of strip head-to-tail deviation cannot be avoided, which often leads to production accidents and severely limits the improvement of the manufacturing capacity of the steckel mill. , which deteriorates the product quality

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