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Cold-rolled chilled coil unilateral wave control method and control system

A control method and control system technology, applied in the field of cold rolling, can solve problems such as uncontrollable unilateral waves

Active Publication Date: 2018-06-22
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention solves the technical problem that the existing symmetrical roll bending control cannot control the unilateral wave by providing a method and control system for controlling the unilateral wave of the cold-rolled chilled coil

Method used

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  • Cold-rolled chilled coil unilateral wave control method and control system
  • Cold-rolled chilled coil unilateral wave control method and control system

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Experimental program
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Effect test

Embodiment approach 1

[0044] Embodiment 1: A list of roll bending adjustment values ​​is stored in the storage unit of the pickling mill, and when it is detected that unilateral waves have been generated in the on-site rolling of strip steel, the list of roll bending adjustment values ​​that is stored is matched to the list of roll bending adjustment values. The adjustment value of the bending degree corresponding to the generated unilateral wave. The bending degree adjustment value list includes the corresponding bending degree adjustment values ​​for various unilateral wave forms: for example, the unilateral wave form is divided into multiple wave height intervals, where the wave height of the unilateral wave is at the The stored bending degree adjustment value corresponding to the first wave height interval is "a"; the wave height of the unilateral wave is in the second wave height interval greater than the first wave height interval, and the corresponding stored bending degree adjustment value i...

Embodiment approach 2

[0047] Embodiment 2: The acid rolling unit also includes a touch screen, and then receives different operation information from the touch screen. The operation information is specifically the first operation information or the second operation information, and the roll bending degree is extracted from the first operation information or the second operation information. Adjust the value. Let’s take 5 racks as an example, for example, select the TCM28 touch screen screen of TMBX5, which includes the working side key “WS” and transmission side key “DS” of “Intermediate roll bending selection (IMR BENDER SELECT)”, which are used to select the bending Whether the roll degree adjustment value controls the working side of the intermediate roll or the transmission side of the intermediate roll alone; it also includes the working side key "WS" and the transmission side key "DS" of "work roll bending selection (WRBENDER SELECT)", It is used to select whether the roll bending adjustment ...

Embodiment approach

[0050] In the specific implementation process, while using the first implementation of S102, under one implementation of S103: control the bending force of the first type of roller on the side where the unilateral wave is located to change the adjustment value of the bending degree, including: the generated unilateral When the wave is greater than the preset wave height threshold, control the bending force of the working roll on the side of the unilateral wave to change the adjustment value of the bending degree; when the generated unilateral wave is less than or equal to the preset wave height threshold, control the middle The bending force on the side where the edge wave is located changes the adjustment value of the bending degree.

[0051] In the specific implementation process, another implementation manner of S103 is: follow the second implementation manner of S102, and then adjust the opening degrees of the solenoid valves at different positions according to different op...

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Abstract

The invention discloses a control method and a control system for single edge waves of a cold rolling cold and hard roll, which are applied to the technological process of cold rolling of cold and hard rolls of a pickling rolling unit including a working roll and an intermediate roll. The control method for single edge waves of a cold rolling cold and hard roll comprises the following steps: monitoring whether strip steel rolled in the field has single edge waves; while monitoring that the strip steel rolled in the field has single edge waves, obtaining a first roll bending degree adjusting value; and controlling the first class of roll to change the roll bending force of a single side where the singe edge waves are located so as to change the roll bending degree adjusting value, wherein the first class of roll is one out of the intermediate roll and the working roll. Roll bending control realized by the invention is asymmetrical control, namely, roll bending adjustment is carried out at one side, and the other side keeps still, so that the roll bending force can directly act on the single edge waves. The control method and the control system can effectively solve the technical problem that existing symmetric roll bending control cannot control singe edge waves, and has a remarkable effect in improving the plate shape.

Description

technical field [0001] The invention relates to the technical field of cold rolling, in particular to a method and a control system for controlling unilateral waves of cold rolled chill coils. Background technique [0002] In actual production, the state of the site is uncertain, and there may be various situations such as the strip slightly deviates from the center line, rolling force deviation, tension deviation, etc., resulting in different elongation at each point in the width direction of the strip. There will be waves in the part. Unilateral waves have brought many disadvantages to the crew. If the shape of the head and tail plate is not good, it must be cut off in the subsequent continuous retreat and galvanizing line, resulting in a lot of scrap steel; The pickling mill will be rolled and broken, which not only produces a large amount of waste products, but also seriously affects the normal operation of the mill. [0003] Based on the control method of the acid ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/38
CPCB21B37/38B21B2269/04B21B2269/06
Inventor 赵志坚王健顺肖激杨沈福磊魏建平刘顺心李晓磊郭增元刘永超唐福山胡大鹏高峰徐志荣程晓娟张树亮
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD