DEFECT MARKING METHOD AND DEVICE

The defect marking method comprises the steps of: installing a surface defect tester (3) to detect surface flaw and a marker device (8) to apply marking at defect position, in a continuous processing line o steel sheet; detecting the surface flaw on the steel sheet using the surface defect tester (3...

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Hauptverfasser: UESUGI, MITSUAKI, HARADA, KOZO, YOSHIKAWA, SHOJI, KAWAMURA, TSUTOMU, KANETO, SHUJI, OSHIGE, TAKAHIKO, KUSHIDA, YASUO, TOMONAGA, SHINICHI, SUGIURA, HIROYUKI, SUYAMA, TSUNEO, UEHARA, OSAMU, IWABUCHI, MASAHIRO, TANAKA, HAJIME, INOMATA, MASAICHI, FUKUDA, SHIGEMI, HARADA, SHUICHI, KAZAMA, AKIRA
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creator UESUGI, MITSUAKI
HARADA, KOZO
YOSHIKAWA, SHOJI
KAWAMURA, TSUTOMU
KANETO, SHUJI
OSHIGE, TAKAHIKO
KUSHIDA, YASUO
TOMONAGA, SHINICHI
SUGIURA, HIROYUKI
SUYAMA, TSUNEO
UEHARA, OSAMU
IWABUCHI, MASAHIRO
TANAKA, HAJIME
INOMATA, MASAICHI
FUKUDA, SHIGEMI
HARADA, SHUICHI
KAZAMA, AKIRA
description The defect marking method comprises the steps of: installing a surface defect tester (3) to detect surface flaw and a marker device (8) to apply marking at defect position, in a continuous processing line o steel sheet; detecting the surface flaw on the steel sheet using the surface defect tester (3); determining defect name, defect grade, defect length, and defect position in the width direction of the steel sheet, on the basis of thus detected flaw information, further identifying the defect in terms of harmful defect. injudgicable defect, and harmless defect; applying tracking of the defect position for: each of the harmful defect and the injudgicable defect; and applying marking to the defect position. The defect marking device (1) comprises a defect inspection means (140,140a) having plurality of light-receiving parts (132a) and a signal processing section (130), and a marking means (144).
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language eng ; fre ; ger
recordid cdi_epo_espacenet_EP1178301B1
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subjects AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING
MEASURING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PHYSICS
PUNCHING METAL
TESTING
TRANSPORTING
title DEFECT MARKING METHOD AND DEVICE
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