A calibration method and automatic roll change control method for the lower step pad of a finishing mill
A technology of control method and calibration method, which is applied in the field of hot rolling, can solve problems such as low operation efficiency and poor precision of lower step pads, and achieve the effects of improving operation efficiency, eliminating movement errors, and solving the termination of automatic roll change control program
Active Publication Date: 2022-07-15
SHOUGANG JINGTANG IRON & STEEL CO LTD
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Problems solved by technology
[0003] The invention provides a method for calibrating the lower step pad of a finishing mill and an automatic roll change control method, which solves the technical problems in the prior art that the movement position accuracy of the lower step pad is poor and the operation efficiency is low during automatic roll change
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[0037] The embodiments of the present application provide a method for calibrating a lower step pad of a finishing mill and an automatic roll change control method to solve the technical problems of poor moving position accuracy and low operation efficiency of the lower step pad in the prior art during automatic roll change.
[0038] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific embodiments of the description. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments may be combined with each other under the condition of no conflict.
[0039] see figure 1 and figure 2 , a method for calibrating a step pad under a finishing mill, comprising:
[0040] Obtain the height of the lower support surface of the lower support roller 1 when it is ...
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The invention belongs to the technical field of hot rolling, and discloses a method for calibrating a lower step pad of a finishing mill and an automatic roll change control method; the method for calibrating a lower step pad for a finishing mill comprises: obtaining a lower support surface of a lower support roll at The height when the support roller is on the pulley; determine the Nth pad corresponding to the height in the lower step pad; push the Nth pad to the roller changing position through the action of the step pad hydraulic cylinder, and obtain the Nth pad The distance L1 between the center lines of the N pads and the center line of the lower support roller arc-shaped backing plate; the zero position of the step pad hydraulic cylinder is calibrated with the roller changing position, and the lower backing plate is calibrated based on the distance L1 Individual pads for step pads. The calibration method for the lower step pad of the finishing mill provided by the present invention can improve the moving position accuracy and operation efficiency of the lower step pad during automatic roll change.
Description
technical field [0001] The invention relates to the technical field of hot rolling, in particular to a calibration method and an automatic roll change control method for a lower step pad of a finishing mill. Background technique [0002] In the production process of hot-rolled strip steel, the height of the backing plate is often adjusted by the reciprocating movement of the lower step pad to compensate for the wear of the work roll and backup roll diameter. The effect of the height of the rolling line. However, in the process of automatic roll change, the position of the step pad is often lost or inaccurate, resulting in poor movement position accuracy of the step pad, which seriously affects the operation efficiency; at the same time, it is also easy to cause the lower support roller to fall in an inaccurate position. equipment accident. SUMMARY OF THE INVENTION [0003] The invention provides a calibration method and an automatic roll change control method for a lower...
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IPC IPC(8): B21B31/08B21B37/00
CPCB21B31/08B21B37/00
Inventor 张维中张泽朋韦绍恒王震冯树成孟庆龙张彦宾闻怡龙李强
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD