The automatic control method of the coiler under the emergency situation of the continuous hot-rolled thin strip line breaking

Abstract

The invention provides an automatic control method for a coiler in an emergency situation when a fully continuous hot-rolled thin strip line is broken. First, the types of broken strips are divided into three situations according to the different positions of the broken strips: when the first piece of steel The strip is broken before entering the 2# coiler; the strip has already entered the 2# coiler, and after the strip is broken, it needs to enter the 1# coiler to coil the steel; the strip has already entered the 1# coiler, and after the strip is broken, it needs to enter the 2 #Coiler coils steel; manual rescue after belt breakage requires operating multiple devices at the same time, making it difficult to ensure successful intervention. This method uses specific control methods to achieve one-click operation in different situations through the installation of relevant components and specific control methods according to specific situations. The emergency treatment method avoids unnecessary economic losses caused by the entire line shutting down due to belt breakage. It also reduces the time spent processing scrap steel due to belt breakage and stops. At the same time, it avoids the waste of time in restarting the production to organize production. It not only improves the production efficiency of the production line , and can also effectively avoid production safety issues.

Description

technical field [0001] The invention relates to the technical field of automatic control of steel rolling, in particular to an automatic control method of a coiler in case of a full continuous hot-rolled thin strip line breaks in an emergency. Background technique [0002] In the fully continuous hot-rolled thin strip production line, once the strip breaks at the front and rear of the rolling mill, the normal automatic control sequence of the coiler will be disrupted. The coiler can quickly respond to various emergencies, which is a last resort One of the important conditions for stopping rolling, so it is very important to ensure that all equipment can operate in an orderly and automatic manner in the emergency situation of broken belt; The operation prepares all the equipment. Since the strip before and after the broken strip is still moving forward on the roller table, the new strip head at the broken strip will be sent to the front of the coiler soon. Under normal circu...

AI Technical Summary

Problems solved by technology

[0002] In the fully continuous hot-rolled thin strip production line, once the strip breaks at the front and rear of the rolling mill, the normal automatic control sequence of the coiler will be disrupted. The coiler can quickly respond to various emergencies, which is a last resort One of the important conditions for stopping rolling, so it is very important to ensure that all equipment can operate in an orderly and automatic manner in the emergency situation of broken belt; The operation prepares all the equipment. Since the strip before and after the broken strip is still moving forward on the roller table, the new strip head at the broken strip will be sent to the front of the coiler soon. Under normal circumstances, it is necessary to operate the speed and pressing actions of the roller table, upper pinch roller, lower pinch roller, reel, roll-helping roller, guide plate and other equipment. The operation steps are quite complicated, and the emergency command and operation The workers are in a hurry to return the equipment quickly, so the error rate of this operation method is basically over 90%.

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