A method for controlling the temperature drop of a steel plate in a medium-heavy plate rolling production line
A control method and temperature drop technology, which is applied in the control of temperature drop in the process, the control of steel plate rolling and conveying speed, and can solve the problems that cannot meet the process requirements, etc.
Active Publication Date: 2017-02-22
BAOSHAN IRON & STEEL CO LTD
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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 steel plate is transported from the finishing mill to the roller table transport process of the control cooling device
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[0178] Assuming that the medium and heavy plate production line is arranged in sequence according to the finishing mill and the controlled cooling device, the roller table group is divided into 6 groups, and the names of each roller table group are FX1, FX2, FX3, FX4, FX5, AC1, and the number between FX5 and AC1. The connected position is the position of the handover point, the distance from the handover point to the finishing mill Sf is 58 meters, and the distance Sa from the handover point to the entrance of the control cooling device is 6.8 meters. The connecting position between FX1 and FX2 is defined as the switching point of the transportation process.
[0179] A new speed control module C2g is added for global coordination to calculate speed map parameters. Change C2f, C1, C1a, C2a, increase communication with C2g and change the original speed control function. Through the above new additions and the reconstruction of the original speed control unit module, a new integ...
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Abstract
The invention relates to a control method for temperature reduction of steel plates in a medium-thickness plate rolling production line process, in particular to an automatic speed control method in a final rolling process of a rolling mill and in a roller way conveying process of the steel plates from a finish rolling mill to a control cooling device, 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 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 thick plate rolling production line. Specifically, the invention relates to a method for controlling the temperature drop of a steel plate in the process of a medium and thick plate rolling production line. The invention relates to a method for controlling the temperature drop of the steel plate on the medium and heavy plate rolling production line arranged by the device during the process from the finish rolling mill to the control cooling device. The method for controlling the temperature drop of the steel plate in the medium and heavy plate rolling production line of the present invention mainly relates to the control method of the steel plate rolling and conveying speed in the medium and heavy plate rolling production line. [0002] technical background [0003] At present, the modernized medium and heavy plate rolling production line is usually equipped with heating furnace, ro...
Claims
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IPC IPC(8): B21B37/74
Inventor 王全胜苗雨川
Owner BAOSHAN IRON & STEEL CO LTD
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