Title :
Inner defect detection for a thin steel strip
Author :
Kim, Goohwa ; Choi, Sang-Woo ; Bae, Jinsu ; Kim, Jung-Hwan
Author_Institution :
Tech. Res. Lab., POSCO, Pohang
Abstract :
Two detection methods, magnetic and ultrasonic method, were compared to detect a defect that is located in and on the steel strip. The main composition of that defect is non-metallic oxides. We can select a proper method of detection according to the purpose of detector installation, the strip thickness, and the line speed. Magnetic flux leakage method is one of the promising methods for a very thin steel strip. On the other hand, the guided ultrasonic wave is very useful on for the thin steel strip such as the strip in pickling line.
Keywords :
magnetic flux; pickling (materials processing); steel industry; strips; ultrasonic applications; detector installation; guided ultrasonic wave; inner defect detection; magnetic flux leakage method; magnetic method; nonmetallic oxides; pickling line; thin steel strip; ultrasonic method; Eddy currents; Inspection; Magnetic flux leakage; Magnetic sensors; Metals industry; Optical surface waves; Radiography; Steel; Strips; Surface cracks; Inner defect detection; Magnetic; Steel strip; Ultrasonic;
Conference_Titel :
Control, Automation and Systems, 2008. ICCAS 2008. International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-89-950038-9-3
Electronic_ISBN :
978-89-93215-01-4
DOI :
10.1109/ICCAS.2008.4694418
