Control method of medium-thickness plate rolling and conveying speed

Abstract

The invention relates to an automatic speed control method in a final rolling process of a rolling mill, in a roller way conveying process of steel plates from a finish rolling mill to a control cooling device and in a pre-straightening process, and aims to satisfy the TMCP process parameter requirements of smaller difference between the final rolling temperature of finish rolling and the cooling beginning temperature of some products. The technical scheme of the invention is suitable for a modern medium-thickness plate production line arranged by a finish rolling mill, a pre-straightener and a control cooling device and having an automatic control system. The technical scheme of the invention gives a velocity diagram (10) of integrated steel plate operation satisfying the seamless speed joint between the steel polishing process and the steel plate transportation process in final rolling considering the final rolling temperature and cooling beginning temperature process requirements; and the technical scheme newly adds a speed control module for global coordinative calculation of parameters of the velocity diagram for realizing the velocity diagram of integrated steel plate operation, and improves new speed control schemes of speed control modules of traditional all units.

Description

technical field [0001] The invention relates to the field of automatic control of a medium and heavy plate rolling production line, in particular, the present invention relates to a method for controlling the rolling and conveying speed of steel plates in a medium and heavy plate rolling production line, The overall coordinated speed automatic control method of the steel plate on the plate rolling production line with the cooling device arrangement from the finishing mill to the rolling mill that controls the cooling device, the output roller table after the rolling mill, and the pre-leveler, that is, the last pass of the finishing mill. The overall coordinated speed control method of the manufacturing process and the roller conveyor process. Background technique [0002] At present, in the field of metallurgy, modern medium and heavy plate rolling production lines are usually equipped with heating furnaces, rolling mills, controlled cooling devices, thermal straighteners, e...

AI Technical Summary

Problems solved by technology

[0054] Aiming at the actual production problem that the difference between the finish rolling temperature and the cooling start temperature of some products adopting TMCP technology is relatively small, and the conventional roller table transportation method cannot meet the process requirements, the technical solution of the present invention provides a method including the final stage of the rolling mill. The automatic speed control method of the second rolling process, the conveying process of the steel plate from the finishing mill to the roller conveying process of the controlled cooling device, and the pre-straightening process

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