Method suitable for width measurement and centering of rough rolling slab in hot rolling mill

Abstract

The invention relates to a method suitable for width measurement and centering of a rough rolling slab in a hot rolling mill, which belongs to the technical filed of steeling rolling computer control. The method mainly comprises the following steps of: 1, controlling a left guide plate and a right guide plate to arrive holding positions; 2, controlling the left guide plate and the right guide plate to move towards the direction of a rolling central line synchronously until contacting and patting a blank plate; 3, when the contact pressures of the left guide plate and the right guide plate, and the blank plate reach a predetermined value; recording the distance between the left guide plate and the right guide plate and the blank plate; 4, taking the recorded distance value as an actual width measurement value of the blank plate which is used for performing on-line control on rolling parts including a vertical roller; and 5, controlling the left guide plate and the right guide plate to return to guide positions. By adopting the method of the invention, original side plates which only have a guiding effect can play a role in patting the blank plate and ensuring the blank plate to be centered, and can be used as a detection device for measuring the actual width of the blank plate accurately, so that an error action caused by data error is avoided and the performance of equipment is remarkably enhanced without adding equipment investment hardly.

Description

Technical field [0001] The invention relates to a method for width measurement and centering of a rough rolled slab in a hot rolling mill, and belongs to the technical field of steel rolling computer control. Background technique [0002] Before the slab of the hot rolling mill is ready to enter the rough rolling mill, it needs to go through the following process: the slab is checked from the continuous casting line to the feeding roller table, and the model (ie the standard control program) is issued with the slab number and coil number Wait for a series of data to confirm the identity of the slab. Then the steel pusher pushes the slab into the furnace for heating and tracking in the furnace, and finally the hot billet is extracted by the steel puller and placed on the discharge roller table for rolling. In this process, misinput, thermal deformation and other reasons can cause the drawn slab to be inconsistent with the expected rolling slab, or the actual slab width does not m...

AI Technical Summary

Problems solved by technology

However, the technical solutions of these two patent documents are not aimed at the above problems, so they cannot solve the problem of checking the slab through detection

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