FR2357889A1 - Appareil de detection de defauts de surface d'une piece metallique chauffee au rouge - Google Patents

Appareil de detection de defauts de surface d'une piece metallique chauffee au rouge

Info

Publication number
FR2357889A1
FR2357889A1 FR7721219A FR7721219A FR2357889A1 FR 2357889 A1 FR2357889 A1 FR 2357889A1 FR 7721219 A FR7721219 A FR 7721219A FR 7721219 A FR7721219 A FR 7721219A FR 2357889 A1 FR2357889 A1 FR 2357889A1
Authority
FR
France
Prior art keywords
metal part
source
red
detection
heated metal
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
FR7721219A
Other languages
English (en)
Other versions
FR2357889B1 (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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of FR2357889A1 publication Critical patent/FR2357889A1/fr
Application granted granted Critical
Publication of FR2357889B1 publication Critical patent/FR2357889B1/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
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/72—Investigating presence of flaws
    • 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
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G01N2021/8918—Metal

Landscapes

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

Abstract

Pour visualiser les défauts d'une pièce métallique 1 chauffée au rouge, on emploie un détecteur comportant une source de lumière 3 illuminant une surface prédéterminée de la pièce métallique, un dispositif analyseur d'images 5 pour prélever l'image de la surface de ladite pièce métallique déterminée par les rayons lumineux de ladite source, et un obturateur 10 disposé entre la surface réceptrice de lumière dudit dispositif analyseur et la source de lumière. L'énergie réfléchie par la surface de la pièce métallique et correspondant à la lumière incidente de ladite source est réglée supérieure à l'énergie de radiation de la pièce métallique en elle-même, en ajustant la source. Application : détection de défauts dans les lignes de laminage.
FR7721219A 1976-07-09 1977-07-08 Appareil de detection de defauts de surface d'une piece metallique chauffee au rouge Granted FR2357889A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51081784A JPS6026176B2 (ja) 1976-07-09 1976-07-09 赤熱金属材料の表面疵検出装置

Publications (2)

Publication Number Publication Date
FR2357889A1 true FR2357889A1 (fr) 1978-02-03
FR2357889B1 FR2357889B1 (fr) 1981-12-11

Family

ID=13756099

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721219A Granted FR2357889A1 (fr) 1976-07-09 1977-07-08 Appareil de detection de defauts de surface d'une piece metallique chauffee au rouge

Country Status (4)

Country Link
US (1) US4219844A (fr)
JP (1) JPS6026176B2 (fr)
DE (1) DE2731024A1 (fr)
FR (1) FR2357889A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153565A2 (fr) * 1984-02-28 1985-09-04 Kawasaki Steel Corporation Procédé et appareil pour la détection de défauts superficiels sur un corps métallique chaud

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581067A (en) * 1978-11-29 1980-06-18 Sumitomo Metal Ind Ltd Cutting device of steel material while hot
US4319270A (en) * 1979-01-12 1982-03-09 Kobe Steel, Ltd. Surface inspection system for hot radiant material
DE2952712C2 (de) * 1979-12-29 1984-07-12 Hoesch Werke Ag, 4600 Dortmund Vorrichtung zur Erkennung von Fehlern
DD158824A1 (de) * 1980-11-03 1983-02-02 Adelbrecht Schorcht Anordnung zur automatischen justierung mindestens eines gegenstandes
JPS5788307A (en) * 1980-11-25 1982-06-02 Nippon Steel Corp Method for detecting surface flow of steel billet
JPS5942181A (ja) * 1982-08-31 1984-03-08 Mitsubishi Metal Corp 上向きｔｉｇ溶接による溶接管の製造方法
JPS59209486A (ja) * 1983-05-12 1984-11-28 Furukawa Electric Co Ltd:The 金属管製造方法
FR2563342B1 (fr) * 1984-04-24 1988-03-25 Somafer Sa Procede de detection et d'enregistrement des defauts sur semi-produits siderurgiques chauds
US4649426A (en) * 1984-06-12 1987-03-10 The United States Of America As Represented By The United States Department Of Energy Electronic imaging system and technique
US4675730A (en) * 1985-09-06 1987-06-23 Aluminum Company Of America Video surface inspection system
MX9603554A (es) * 1996-08-21 1998-04-30 Servicios Condumex Sa Dispositivo sensor de conteo y dimensionamiento de grietas y burbujas superficiales en barra de cobre durante el proceso de colada continua.
GB2342610B (en) * 1998-10-14 2003-01-15 Heckett Multiserv Plc Surface treatment of metal articles
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
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
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
DE102012206221A1 (de) * 2012-03-14 2013-09-19 Sms Siemag Ag Verfahren und Vorrichtung zur Oberflächeninspektion von metallurgischen Gießprodukten in einer Produktionslinie
WO2016193525A1 (fr) 2015-06-02 2016-12-08 Sapotech Oy Procédé et appareil pour déterminer des caractéristiques de surface chaude
TWI644288B (zh) * 2018-02-08 2018-12-11 力成科技股份有限公司 熱板表面之檢測方法
CN114609189B (zh) * 2022-02-24 2023-04-21 电子科技大学 一种基于微波致热的缺陷深度信息提取方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187185A (en) * 1960-12-22 1965-06-01 United States Steel Corp Apparatus for determining surface contour
US3646267A (en) * 1970-07-23 1972-02-29 English Electric Valve Co Ltd Camera system for producing a temperature image
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153565A2 (fr) * 1984-02-28 1985-09-04 Kawasaki Steel Corporation Procédé et appareil pour la détection de défauts superficiels sur un corps métallique chaud
EP0153565A3 (en) * 1984-02-28 1986-06-04 Kawasaki Steel Corporation Method and apparatus for detection of surface defects of hot metal body

Also Published As

Publication number Publication date
US4219844A (en) 1980-08-26
JPS6026176B2 (ja) 1985-06-22
DE2731024A1 (de) 1978-01-12
JPS5340582A (en) 1978-04-13
FR2357889B1 (fr) 1981-12-11

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Legal Events

Date Code Title Description
ST Notification of lapse