FR2420753A1 - Procede et appareil pour examiner la surface d'une bande metallique coulee en continu en vue de detecter les defauts qui apparaissent sur cette surface - Google Patents

Procede et appareil pour examiner la surface d'une bande metallique coulee en continu en vue de detecter les defauts qui apparaissent sur cette surface

Info

Publication number
FR2420753A1
FR2420753A1 FR7907336A FR7907336A FR2420753A1 FR 2420753 A1 FR2420753 A1 FR 2420753A1 FR 7907336 A FR7907336 A FR 7907336A FR 7907336 A FR7907336 A FR 7907336A FR 2420753 A1 FR2420753 A1 FR 2420753A1
Authority
FR
France
Prior art keywords
metal strip
detector
examining
defects
appear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7907336A
Other languages
English (en)
Other versions
FR2420753B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Futec Inc
Original Assignee
Futec Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3331278A external-priority patent/JPS54126083A/ja
Priority claimed from JP3331378A external-priority patent/JPS54126084A/ja
Application filed by Futec Inc filed Critical Futec Inc
Publication of FR2420753A1 publication Critical patent/FR2420753A1/fr
Application granted granted Critical
Publication of FR2420753B1 publication Critical patent/FR2420753B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles

Landscapes

  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Continuous Casting (AREA)
  • Radiation Pyrometers (AREA)

Abstract

L'appareil selon la présente invention comprend un émetteur de lumière 10 projetant des faisceaux lumineux de longueurs d'onde courtes sur la bande A en cours de coulée, les faisceaux réfléchis étant reçus par un détecteur 11 à travers un filtre. Une enceinte 18 entoure le faisceau de lumière s'étendant entre l'émetteur 10 et le détecteur 11, des jets d'air comprimé étant envoyés à travers cette enceinte pour chasser tout corps susceptible de gêner la propagation des faisceaux lumineux. Les signaux du détecteur sont traités par un dispositif de mémorisation d'image et l'image est visualisée sur un récepteur de télévision de surveillance sur lequel un opérateur peut déceler immédiatement les criques ou défauts de surface analogues affectant la surface de la bande métallique.
FR7907336A 1978-03-23 1979-03-22 Procede et appareil pour examiner la surface d'une bande metallique coulee en continu en vue de detecter les defauts qui apparaissent sur cette surface Granted FR2420753A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3331278A JPS54126083A (en) 1978-03-23 1978-03-23 Device for detecting surface flaw of continuously cast steel ingot
JP3331378A JPS54126084A (en) 1978-03-23 1978-03-23 Method of detecting surface flaw of continuously cast steel ingot

Publications (2)

Publication Number Publication Date
FR2420753A1 true FR2420753A1 (fr) 1979-10-19
FR2420753B1 FR2420753B1 (fr) 1984-05-11

Family

ID=26371990

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907336A Granted FR2420753A1 (fr) 1978-03-23 1979-03-22 Procede et appareil pour examiner la surface d'une bande metallique coulee en continu en vue de detecter les defauts qui apparaissent sur cette surface

Country Status (5)

Country Link
US (1) US4237959A (fr)
DE (1) DE2911578A1 (fr)
FR (1) FR2420753A1 (fr)
GB (1) GB2019009B (fr)
SE (1) SE7902565L (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952712C2 (de) * 1979-12-29 1984-07-12 Hoesch Werke Ag, 4600 Dortmund Vorrichtung zur Erkennung von Fehlern
ATE13949T1 (de) * 1981-01-12 1985-07-15 Mannesmann Ag Vorrichtung und verfahren zur inspektion von gussstraengen in einer stranggiessanlage.
DE3113120C1 (de) * 1981-03-27 1982-09-30 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur Inspektion von Gussstraengen in einer Stranggiessanlage
US4551760A (en) * 1983-09-16 1985-11-05 Rca Corporation Television camera with solid-state imagers cooled by a thermal servo
EP0147885A1 (fr) * 1983-12-14 1985-07-10 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé de nettoyage d'une surface métallique chaude en mouvement
FR2564200B1 (fr) * 1984-05-11 1986-10-03 Inst Francais Du Petrole Procede pour acquerir des images d'echantillons geologiques en vue de leur analyse optique et dispositif pour sa mise en oeuvre
US4899219A (en) * 1988-10-31 1990-02-06 Amoco Corporation Macroview and microview video record of core
WO1991017009A1 (fr) * 1990-05-01 1991-11-14 The Broken Hill Proprietary Company Limited Controle des metaux coules en continu
NO914574L (no) * 1991-11-22 1993-05-24 Elkem Technology Fremgangsmaate for detektering av pin-hull i strengestoeptemetallemne
EP0893686A1 (fr) * 1997-07-25 1999-01-27 Hoogovens Technical Services Iron & Steel BV Système pour l'inspection d'une bande qui défile
US6859285B1 (en) 1999-08-31 2005-02-22 Og Technologies, Inc. Optical observation device and method for observing articles at elevated temperatures
NL1016660C2 (nl) * 2000-11-21 2002-05-22 Corus Staal Bv Inrichting voor het inspecteren van een bewegende band.
EP1366838B1 (fr) * 2002-02-28 2007-11-28 Lechler GmbH Dispositif de refroidissement pour une cage de laminoir dans une installation de coulée continue
US7460703B2 (en) 2002-12-03 2008-12-02 Og Technologies, Inc. Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar
US6950546B2 (en) 2002-12-03 2005-09-27 Og Technologies, Inc. Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar
US7324681B2 (en) 2002-12-03 2008-01-29 Og Technologies, Inc. Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar
US8020605B2 (en) * 2007-01-26 2011-09-20 Nucor Corporation Continuous steel slab caster and methods using same
US20080179036A1 (en) * 2007-01-26 2008-07-31 Nucor Corporation Continuous steel slab caster and methods using same
WO2010006895A1 (fr) * 2008-07-16 2010-01-21 Siemens Aktiengesellschaft Procédé de conduite d'un dispositif de traitement d'un feuillard métallique et installation de traitement d'un feuillard métallique
DE102009052172A1 (de) 2009-11-06 2011-05-19 Sms Siemag Ag Verfahren zur Regelung des Temperaturverlaufs und der Geschwindigkeit eines Gießstrangs in einer Stranggießanlage und Stranggießanlage zur Durchführung des Verfahrens
AT510662B1 (de) * 2010-08-13 2014-01-15 Voestalpine Stahl Gmbh Vorrichtung und verfahren zum berührungslosen erkennen wenigstens einer fehlerstelle und/oder mindestens einer abmessung an einem warmen stranggegossenen material
CN103175948B (zh) * 2013-02-26 2015-01-07 奇瑞汽车股份有限公司 一种钣金件曲面缺陷检查工具
WO2020199207A1 (fr) * 2019-04-04 2020-10-08 合刃科技（深圳）有限公司 Procédé d'inspection optique de défaut de surface et dispositif associé

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515379A (en) * 1969-06-11 1970-06-02 Allis Chalmers Mfg Co Valve and valve control for preventing passage of processed material to blower for pyrometer sight passage on a rotary kiln

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514047A (en) * 1974-07-01 1976-01-13 Nippon Steel Corp Kinzokuhenno hyomenketsukanbuteireho
US4118732A (en) * 1977-02-15 1978-10-03 Nippon Steel Corporation Apparatus for detecting a surface flaw of a material at high temperature

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515379A (en) * 1969-06-11 1970-06-02 Allis Chalmers Mfg Co Valve and valve control for preventing passage of processed material to blower for pyrometer sight passage on a rotary kiln

Also Published As

Publication number Publication date
GB2019009A (en) 1979-10-24
GB2019009B (en) 1982-11-17
SE7902565L (sv) 1979-09-24
FR2420753B1 (fr) 1984-05-11
US4237959A (en) 1980-12-09
DE2911578A1 (de) 1979-09-27

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