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Method and device for controlling edge waves of strip steel joints

A control method and strip technology, applied in the field of strip rolling, can solve problems such as lag in edge wave control, avoid lag, improve shape control effect, and solve the effect of edge wave control lag

Active Publication Date: 2020-12-15
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the embodiments of the present invention is to provide a strip seam edge wave control method and device, which solves the problem of edge wave control lag by automatically detecting the seam and compensating and controlling the bending force

Method used

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  • Method and device for controlling edge waves of strip steel joints
  • Method and device for controlling edge waves of strip steel joints
  • Method and device for controlling edge waves of strip steel joints

Examples

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no. 1 example

[0037] see figure 1 , is a flowchart of a strip seam control method provided by a preferred embodiment of the present invention. The following will be figure 1 The specific process shown will be described in detail.

[0038] Step S10: Before the joint of two adjacent steel strips enters the continuous rolling mill, obtain the entering distance between the joint and the continuous rolling mill.

[0039] In step S10, a weld detector can be set in front of the continuous rolling mill, and the entry distance between the seam and the continuous rolling mill can be defined as the first working distance between the weld detector (for detecting the seam) and the continuous rolling mill. distance between the rollers. For example, a weld detector can be placed 5 meters before the first work roll of the tandem mill. The entry distance is the distance between the strip and the continuous rolling mill when it moves in the direction of entering the continuous rolling mill.

[0040] It ...

no. 2 example

[0054] In this embodiment, different from the first embodiment, in order to improve the effect of edge wave elimination in the process of seam rolling and ensure the rolling efficiency, a strip joint provided in this embodiment The seam wave control method will also adjust the speed of the strip according to the shape of the strip, and the specific steps are as follows:

[0055] Please refer to image 3 , before step S20, before the step of superimposing the roll bending force compensation amount on the work rolls of the continuous rolling mill, it also includes:

[0056] Step S201: Obtain the shape data representing the flatness of the strip steel plate.

[0057] In this step S201, the shape data representing the flatness of the strip steel plate can be directly obtained by measuring the shape meter, such as the IU value read by the shape meter (a value or a bar graph used to measure the shape condition).

[0058] Step S202: Judging the shape stability of the steel strip ac...

no. 3 example

[0067] see Figure 5 In this embodiment, a strip seam edge wave control device 300 is provided, which can be used to implement the methods described in the first embodiment and the second embodiment, including: a distance detection module 301, a first roll bending force The superimposing module 302 and the second bending force superimposing module 303 .

[0068] The distance detection module 301 is configured to obtain the entering distance between the joint of two adjacent steel strips and the continuous rolling mill before the joint enters the continuous rolling mill.

[0069] The first roll bending force superposition module 302 is configured to superimpose the roll bending force compensation amount on the working rolls of the continuous rolling mill when the entry distance is less than a preset first threshold.

[0070] The second roll bending force superposition module 303 is configured to superimpose the roll bending force compensation amount on the intermediate roll of...

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Abstract

The invention provides a strip steel joint edge wave control method and device. The strip steel joint edge wave control method comprises the following steps of: obtaining the entry distance between ajoint and a continuous mill before the joint of two adjacent strip steel enters the continuous mill; and when the entry distance is less than a preset first threshold value, superimposing roll bendingforce compensation dosage on a working roll of the continuous mill. The method and device solve the problem of the edge wave control lag by automatically detecting the joint and carrying out compensation control on the roll bending force.

Description

technical field [0001] The invention relates to the technical field of strip steel rolling, in particular to a method and a device for controlling edge waves at strip joints. Background technique [0002] Continuous cold rolling is an important process to determine the shape of the strip, and it is of great significance to ensure the quality of the cold-rolled strip. With the fierce competition in the steel industry, customers have higher and higher requirements for the quality of strip steel, and the plate shape, as a key indicator of cold-rolled products, directly affects the production stability of customer slitting, slicing and subsequent processes. demonstrate its importance. [0003] At present, there is a hysteresis phenomenon in the control and adjustment of the edge wave control of the strip head and tail joints when rolling high-strength steel in a cold tandem mill, and the control effect is poor. Contents of the invention [0004] In view of this, the object o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28
CPCB21B37/28
Inventor 李靖万军张晓峰徐传国齐海峰任新意关军王飞王少飞刘玉起宁媛媛任秋红高岩张俊花
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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