Device and method for controlling rolling force of temper mill in non-extending rate detection state

Abstract

The invention provides a device and method for controlling rolling force of a temper mill in a non-extending rate detection state, and belongs to the technical field of cold-rolled strip steel production. On the basis that the temper mill extending rate control principle is researched, the rolling force control program of the temper mill is improved through optimization, and the problem that an unreasonable rolling force set value causes extending rate jumping in the non-extending rate detection state when the temper mill operates at a low speed is alleviated. According to the core thought, the rolling force practical set value of the temper mill is properly stored and applied, and the purposes of optimizing rolling force optimization control and alleviating the rolling force jumping problem of the temper mill in the starting and parking processes are achieved. Internal parameter setting of the control program is optimized through analysis of a large number of data, and a man-machine interface function is added to perfect control. The method has the advantages that the number of arrangement products and defective products can be reduced by operators through simple operation selections, secondary work of a rewinding unit is avoided, production efficiency can be effectively improved, energy consumption is reduced, and good economic benefits and popularization value are achieved.

Description

technical field [0001] The invention belongs to the technical field of cold-rolled strip steel production. By optimizing the rolling force setting value of the temper mill in the state of no elongation detection, the problem of elongation jump during the start-up and stop of the temper mill is alleviated, and the remaining strip steel is reduced. Defective products can be widely used in tempering mill systems for cold-rolled strip production. Background technique [0002] During the production process of the continuous retreating line, the skin pass machine will start and stop or slow down according to the export process requirements. When the temper mill transitions from the stop state to the running state (speed greater than or equal to 30m / min) or low speed operation (speed less than 30m / min), the rolling force control system cannot give a reasonable rolling force setting value. Therefore, the system takes the secondary given value or the manually set value as the refere...

AI Technical Summary

Problems solved by technology

The sudden jump of the rolling force caused the deviation between the actual elongation of the product and the set elongation during the control period to be too large. The strip steel plate shape is poor

Usually every start and stop will cause about 20 meters of defective or waste products, which directly affects the quality of the strip steel

The resulting defective products need to go to the recoiling unit for secondary production, resulting in reduced production capacity and increased energy consumption, which directly affects production efficiency and economic benefits

Images