A method for tracking and processing strip steel in tandem cold rolling mill
A processing method and technology of cold tandem rolling mills, which are applied in the direction of rolling mill control devices, metal rolling, metal rolling, etc., can solve problems such as inapplicability, reduce downtime, avoid data errors in strip steel setting values, and improve economic efficiency. benefit effect
Active Publication Date: 2017-05-24
ANGANG STEEL CO LTD
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Problems solved by technology
However, the strip tracking processing method and setting parameters of the continuous annealing unit are not applicable to the continuous rolling unit
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[0039] Taking the 1450mm tandem cold rolling mill as an example, the strip tracking control system adopts Siemens TDC real-time multitasking processor, and additional weld detectors are installed in the pickling handover area, the entrance of the rolling mill, the exit of the pickling looper and the entrance of the rolling mill. One location counter is set per tracking area. The maximum entry speed of the strip mill is 6 m / s, and the maximum exit speed of the rolling mill is 20 m / s.
[0040] The strip tracking area of the cold tandem mill is divided into pickling transfer area, mill entrance area 1-2 rack area, 2-3 rack area, 3-4 rack area, 4-5 rack area, 5 rack-flying area Shearing area, No. 1 coiling area, and No. 2 coiling area. The specific tracking area location settings are shown in Table 1.
[0041] Table 1 Tracking area location settings
[0042] tracking area Starting point (m) End point (m) pickling transfer area 0 250 Mill entry area ...
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Disclosed is a tracking processing method for band steel on a cold tandem mill. The tracking processing method comprises the following steps of division of a band steel tracking area, weld joint tracking, a request for a set value, wedge-shaped rolling control and calculation of a shearing position. 9 divided band steel tracking regions are subjected to position setting. After a weld joint enters the tracking area, the operation distance of the weld joint is calculated. Speed selection of the tracking regions and position correction of the weld joint are conducted, and an effective judgment is made to a detection signal of the weld joint. The set value is requested and confirmed before weld joint enters the mill. Wedge-shaped rolling control is conducted. When the length of wedge-shaped rolling reaches a set length, a rolling set value is transitioned to the new set value of the band steel, and then the shearing position is determined according to the conditions of the widths of the parts, in front of the weld joint or behind the weld joint, of the band steel. According to the tracking processing method, the actual position of the band steel on a production line of the cold tandem mill can be tracked accurately, and the faults, of the data error of the set value of the band steel, rolling band breakage, the error of the shearing position, etc., caused by tracking errors of the band steel are effectively avoided. The downtime of a machine set is reduced, and the operation rate of the machine set and the economic benefit of an enterprise are improved.
Description
technical field [0001] The invention belongs to the field of steel rolling automatic control, in particular to a tracking processing method for strip steel in a cold continuous rolling mill. Background technique [0002] The purpose of strip tracking is to enable the computer to know the exact position of the material on the production line and its control status at any time, so that the computer can start the relevant functional programs within the specified time, and perform various controls on the designated rolled piece, including setting value data requests , wedge rolling, shear position calculation, etc., so as to ensure the continuous and automatic operation of the production process. Strip tracking control is a key technology in the production process of tandem cold rolling mill, and it is the premise guarantee for realizing continuous rolling control. Therefore, it is of great significance to design and develop a processing method for accurate tracking of strip po...
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IPC IPC(8): B21B37/00B21B38/00
Inventor 秦大伟王军生宋君张岩刘宝权侯永刚柴明亮费静吴萌许寒冰
Owner ANGANG STEEL CO LTD