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The Method of Strip Head Deviation Correction During Strip Threading in Continuous Rolling

A strip and head technology, which is applied in the field of strip head deviation correction in the process of continuous rolling and stripping, can solve the problems of poor strip head deviation correction effect and other problems.

Active Publication Date: 2016-04-13
GUANGXI LIUZHOU YINHAI ALUMINUM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for correcting the deviation of the head of the strip in the process of continuous rolling and threading, which can solve the problem of poor correction effect of the strip head in the process of continuous rolling and threading of existing plates and strips

Method used

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  • The Method of Strip Head Deviation Correction During Strip Threading in Continuous Rolling
  • The Method of Strip Head Deviation Correction During Strip Threading in Continuous Rolling
  • The Method of Strip Head Deviation Correction During Strip Threading in Continuous Rolling

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Embodiment 1

[0139] Since the distance between the roll gaps between the racks generally does not exceed 6000 mm, care should be taken to ensure the length of the sampling area L when installing the camera de Not greater than 4000 mm, preferably L de = 2500 mm, take L at the same time df = 2500 mm. The image is digitized by a high-speed image data acquisition card and sent to the computer. As the object of rolling piece size identification, the computer processes the digital image, extracts the edge information of the strip head, and obtains the final planar size of the rolled piece. When the rolled piece passes through the detection area between the racks, the signal of the head of the strip processed by the PLC system is used to control the industrial CCD camera to collect an image and send it to the computer for image acquisition and data processing. Assume that the total number of stands in the tandem mill is 4. The roller transmission motor end of the frame is equipped with a speed...

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Abstract

The invention discloses a method for rectifying the deviation of the head of a strip during continuous rolling and threading, and relates to the technical field of metal pressure processing. The following steps are adopted: A. setting the sampling time point when the head of the strip reaches each detection position; . During the strip threading process, when the strip head reaches the detection position of the current stand to be rolled, image acquisition and processing are performed on the edge curves on both sides of the strip head to determine and calculate the degree of deflection of the strip head and Skew direction; C. Online adjustment of the roll gap difference on both sides of the current rolling stand; D. Presetting of the roll gap difference on both sides of the subsequent stand; E. Repeat steps C and D until the crown gauge The head of the strip is detected, and the profile curves on both sides of the head of the strip detected by the multi-channel crown meter are used to adjust the difference between the roll gaps on both sides of the finished frame online. The invention can detect in time the deflection phenomenon of the head during the continuous rolling and threading process of the strip and adjust it, so as to avoid the decline of the yield or the failure of the strip threading caused by the deflection.

Description

technical field [0001] The invention relates to the technical field of metal pressure processing, in particular to a method for correcting the deviation of the strip head during continuous rolling strip threading. Background technique [0002] During the continuous rolling process of plate and strip, due to the influence of asymmetric factors or the side bending of the incoming material, the strip head may be deflected when threading the strip, which is one of the main factors affecting the product yield and coiling quality. First, in severe cases, it may even directly lead to the failure of belt threading, resulting in the scrapping of the entire rolled piece or damage to the equipment. At present, the domestic calendering factory still stays at the level of manual control on the head deviation correction of the strip. Operators often adjust the difference between the roll gaps on both sides based on experience and visual inspection of the deviation degree of the head of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B39/14B21B38/02B21B37/58
Inventor 许磊刘栩周滨蒋婷李江宇
Owner GUANGXI LIUZHOU YINHAI ALUMINUM IND
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