Development of an Online Warping Detection System for Cold-Rolled Thin Strip Steel

An online warping detection method for cold-rolled thin strip steel has not been previously used in the steel industry. Online warping detection equipment was developed by using a line laser and industrial camera for the first time. Based on digital image processing technology, the relative height d...

Full description

Saved in:
Bibliographic Details
Published in:JOM (1989) 2023-09, Vol.75 (9), p.3718-3723
Main Authors: Li, Yang-long, Wen, Jie, Lin, Hai-hai, Yu, Meng, Wang, Feng-qin
Format: Article
Language:English
Subjects:
Chemistry/Food Science
Cold
Cold rolling
Defects
Digital cameras
Digital imaging
Digitization
Earth Sciences
Engineering
Environment
Image processing
Iron and steel industry
Laboratory tests
Lasers
Mathematical models
Methods
Physics
Production lines
Steel industry
Steel products
Strip steel
Technical Article
Warping
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An online warping detection method for cold-rolled thin strip steel has not been previously used in the steel industry. Online warping detection equipment was developed by using a line laser and industrial camera for the first time. Based on digital image processing technology, the relative height distribution of the laser line along the width direction of strip steel was obtained, which could be used to judge the warping degree of the strip steel. A mathematical model of online warping height was established, and the model was validated by laboratory tests. Furthermore, the prediction of offline warping height could be calculated by this model. An online monitoring system of strip warping height was developed, which could monitor the warping height of strip steel in real time. The equipment and system have been successfully installed and applied in a tinning production line. The digitization and traceability of warping defects for a whole coil have been realized, achieving good results.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-023-05936-x