Research and Development > Technical Report > No.9 Special Issue on "Analytical Sciences and Microstructural Characterization″ and "Steel Sheet for Can-making″ > Development of Surface Detector for No. 3 Tin Temper Mill (3TMP)

No.9 Special Issue on "Analytical Sciences and Microstructural Characterization″ and "Steel Sheet for Can-making″

Development of Surface Detector for No. 3 Tin Temper Mill (3TMP)

SHIGENO Masahiko     YAMAUCHI Kenji     AMANUMA Yosuke

Abstract

A newly-developed roll-surface defect detector which was installed at No. 3 tin temper mill (3TMP) at JFE Steel’s West Japan Works (Fukuyama District) is introduced. In this system, defect images are detected by an all-purpose charge coupled device (CCD), and an original logic which was developed focusing on the periodic nature of roll defects is applied to judge defects. Although it was impossible to detect extremely small defects with the conventional technology, as such defects were below the noise level, the new system enables detection of these defects by defect recognition using only periodic signals.

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