Steel pilling-up protective method for serial type rolling mill

Abstract

The invention discloses a steel pilling-up protective method for a serial type rolling mill, belongs to the technical field of an automatic control method for a rolling mill and aims to provide the steel pilling-up protective method for the serial type rolling mill by which steel pilling-up in the rolling process of a rolled piece can be accurately judged in time, an alarm is given in time, and the rolling mill stops operating. According to the steel pilling-up protective method for the serial type rolling mill, hot metal detection elements are installed at a rolled piece inlet side and a rolled piece outlet side of each rack of the serial type rolling mill respectively and used for detecting whether the end of the rolled piece reaches the current position. When the system judges that the end of the rolled piece enters from the rolled piece inlet side and does not reach the rolled piece outlet side within a preset time, an alarming module is started. The steel pilling-up protective method for the serial type rolling mill is suitable for the serial type rolling mill to roll various rolled pieces, and especially suitable for steel pilling-up protection control over heavy steel rails and other rolled pieces prone to having a steel pilling-up phenomenon in the same class.

Description

technical field [0001] The invention specifically relates to a steel stack protection method for a tandem rolling mill, and belongs to the technical field of rolling mill automatic control methods. Background technique [0002] The tandem rolling mill is also called the continuous rolling mill. In the process of rolling various rolled pieces, especially heavy-duty steel rails, the tandem rolling mill may cause the rolled piece to be abnormal due to pass, guide or other external reasons. Bite the steel and enter the rolling mill, and a pile of steel accidents will occur between the racks. When a stacking accident occurs, because the rolled piece does not enter the normal rolling according to the pass shape, the material tracking detection element around the rolling mill cannot detect the position signal of the rolled piece, the main drive will continue to run, and the automatic rolling program will continue Rolling is performed. This leads to complete loss of control of the...

AI Technical Summary

Problems solved by technology

This results in a complete runaway of the rolled stock and stringing out at very high speeds

It will cause serious damage to the equipment in and around the rolling mill, and seriously threaten the personal safety of personnel working near the rolling mill

Accidents can lead to long-term production stoppages and huge losses

[0003] At present, one of the solutions is to take technical measures to reduce the occurrence of steel pile accidents. This method cannot reduce the impact of steel pile accidents. The other method is to judge by the position of the end of the rolled piece. The calculation is Simulate the position of the billet according to the speed of the rolled piece, if the calculation is more accurate during the normal rolling process

However, when there are other reasons that affect the speed of the rolled piece, the calculation of the rolled piece position will not be accurate

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