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

fYear

2008

Firstpage

1957

Lastpage

1960

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCAS.2008.4694418

Filename

4694418