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A method for controlling the elongation of hot-dip galvanizing four-roll skin pass mill

A control method and elongation rate technology, applied in the direction of elongation rate control, etc., can solve the problems of uncertain and frequent fluctuations in the control method, and achieve the effects of reducing length, optimizing PID parameters, and improving control speed and accuracy

Active Publication Date: 2022-04-08
BAOSTEEL ZHANJIANG IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above control methods can better meet the working conditions of the initial equipment state, but due to the limitation of the setting method, the control method is uncertain and can adapt to the frequent fluctuation state of the site

Method used

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  • A method for controlling the elongation of hot-dip galvanizing four-roll skin pass mill
  • A method for controlling the elongation of hot-dip galvanizing four-roll skin pass mill
  • A method for controlling the elongation of hot-dip galvanizing four-roll skin pass mill

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Embodiment Construction

[0022] The method for controlling the elongation of a hot-dip galvanized four-roll temper mill according to the present invention will be further described below based on the specific embodiments and the accompanying drawings, but the specific embodiments and related descriptions do not constitute improper limitations to the technical solution of the present invention. The hot-dip galvanizing four-roller skin passer that the present invention relates to is as figure 1 Shown; The implementation logic diagram of the elongation control method of the hot-dip galvanized four-roll tempering machine is as follows figure 2 As shown, the method includes the following steps.

[0023] (1) start;

[0024] (2) The control system hardware selects the Logix5000 series PLC of AB Company, and adds five variables pid.kp, pid.ki, pid.kd, pid.emax, and pid.j to the global variables. The storage information of these five variables is respectively is the PID model parameter factor K p 、K i 、K ...

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Abstract

The invention discloses a method for controlling the elongation of a hot-dip galvanized four-roller skin pass mill, which belongs to the production control method in the field of cold-rolled strip steel. The present invention first establishes PID model parameter data storage variables, and calls PID parameter data and randomly fluctuates in the range of 5% when the head of a new coil of strip steel is close to the tempering machine. When the head of the strip passes through the tempering machine and the deviation between the elongation rate and the target value is greater than 0.2, execute the deviation statistics program, record the maximum value of the elongation rate deviation and the PID adjustment amount index within 30 seconds, and then determine the maximum elongation rate deviation Whether the value is greater than the original storage data and whether the adjustment index is smaller than the original storage data, if both conditions are met at the same time, the process parameters after random fluctuations are overwritten and stored in the data storage variable. Realize the automatic update process of PID parameters and achieve better elongation control effect.

Description

technical field [0001] The invention relates to the automation field of cold-rolled steel strip production process, in particular to a method for controlling the strip elongation of a cold-rolled temper mill. Background technique [0002] The elongation of the temper mill in the cold-rolling hot-dip galvanizing line is the key process parameter of hot-dip galvanized strip steel, which determines the final performance of the strip steel product. figure 1 Shown is a simple diagram of the layout of the hot-dip galvanizing tempering machine in the prior art. The tempering machine 1 is arranged with a tension roller 2, an anti-wrinkle roller 3, and an anti-vibration roller 4. The strip steel 5 is at the tempering machine 1 position leveling. The main control parameters of the tempering process are the tempering rolling force and the tension before and after the tempering process. The main control targets of the tempering process are the elongation rate of the steel coil and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/56
CPCB21B37/56
Inventor 陈浩杰陈翔卢海峰洪俊吴长生
Owner BAOSTEEL ZHANJIANG IRON & STEEL CO LTD
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