FR2390729A1 - Appareil a detecter les defauts de surface en particulier sur semi-produits siderurgiques - Google Patents

Appareil a detecter les defauts de surface en particulier sur semi-produits siderurgiques

Info

Publication number
FR2390729A1
FR2390729A1 FR7715002A FR7715002A FR2390729A1 FR 2390729 A1 FR2390729 A1 FR 2390729A1 FR 7715002 A FR7715002 A FR 7715002A FR 7715002 A FR7715002 A FR 7715002A FR 2390729 A1 FR2390729 A1 FR 2390729A1
Authority
FR
France
Prior art keywords
strip
detector
magnetic fields
oscillating magnetic
roller bed
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
FR7715002A
Other languages
English (en)
Other versions
FR2390729B1 (fr
Inventor
Claude Vomscheid
Jean-Michel Hambaud
Jean Vibrac
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.)
SETIM
Original Assignee
SETIM
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 SETIM filed Critical SETIM
Priority to FR7715002A priority Critical patent/FR2390729A1/fr
Priority to FR7814100A priority patent/FR2425069A1/fr
Priority to FR7814101A priority patent/FR2425070A1/fr
Publication of FR2390729A1 publication Critical patent/FR2390729A1/fr
Application granted granted Critical
Publication of FR2390729B1 publication Critical patent/FR2390729B1/fr
Priority to BE6/47142A priority patent/BE882938Q/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9093—Arrangements for supporting the sensor; Combinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

Dispositif automatique de détection et de localisation en continu des défauts sur les faces des masses métalliques rectilignes. Invention caractérisée par une tête de détection équipée d'au moins quatre ensembles capteurs, entraînée en rotation rapide au-dessus de la surface à contrôler, tête portée par un support mécanique articulé roulant sur ladite surface et maintenant entre elle et les capteurs, un espace constant. La détection aux arêtes s'effectuant par l'intermédiaire d'ensembles capteurs à détecteur central face au plan d'arête et par deux émetteurs latéraux parallèles aux faces adjacentes, capteurs associés à des circuits de traitement et d'analyse des signaux. Cette invention intéresse les industries métallurgiques et les entreprises fabriquant du matériel pour celles-ci.
FR7715002A 1977-05-10 1977-05-10 Appareil a detecter les defauts de surface en particulier sur semi-produits siderurgiques Granted FR2390729A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7715002A FR2390729A1 (fr) 1977-05-10 1977-05-10 Appareil a detecter les defauts de surface en particulier sur semi-produits siderurgiques
FR7814100A FR2425069A1 (en) 1977-05-10 1978-05-05 Product surface fault repair control - utilises microprocessor operating from data received by memory from detector
FR7814101A FR2425070A1 (en) 1977-05-10 1978-05-05 Detection and analysis of surface faults on product - is determined from servo controlled detector suspended above surface
BE6/47142A BE882938Q (fr) 1977-05-10 1980-04-23 Appareil a detecter les defauts de surface en particulier sur semi produits siderurgiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7715002A FR2390729A1 (fr) 1977-05-10 1977-05-10 Appareil a detecter les defauts de surface en particulier sur semi-produits siderurgiques

Publications (2)

Publication Number Publication Date
FR2390729A1 true FR2390729A1 (fr) 1978-12-08
FR2390729B1 FR2390729B1 (fr) 1980-03-14

Family

ID=9190880

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715002A Granted FR2390729A1 (fr) 1977-05-10 1977-05-10 Appareil a detecter les defauts de surface en particulier sur semi-produits siderurgiques

Country Status (2)

Country Link
BE (1) BE882938Q (fr)
FR (1) FR2390729A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502992A1 (fr) * 1981-04-01 1982-10-08 Hoesch Estel Werke Ag Procede et dispositif pour le decriquage a la meule, controle de cylindres de laminoir
EP0093864A2 (fr) * 1982-05-10 1983-11-16 Caterpillar Inc. Procédé et appareil pour l'usinage d'une pièce de travail par abrasion
FR2540246A1 (fr) * 1983-01-28 1984-08-03 Solmer Dispositif pour detecter des criques sur les brames d'acier sortant d'une coulee continue
WO2016016663A3 (fr) * 2014-07-31 2016-04-07 V-Viz Ltd Système permettant une détection non destructive de défauts internes
EP4368985A1 (fr) * 2022-11-09 2024-05-15 The Boeing Company Détection de porosité pour matériaux composites à l'aide de résonance inductive

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2502992A1 (fr) * 1981-04-01 1982-10-08 Hoesch Estel Werke Ag Procede et dispositif pour le decriquage a la meule, controle de cylindres de laminoir
EP0093864A2 (fr) * 1982-05-10 1983-11-16 Caterpillar Inc. Procédé et appareil pour l'usinage d'une pièce de travail par abrasion
EP0093864A3 (en) * 1982-05-10 1985-01-23 Caterpillar Tractor Co. Method and apparatus for abrasively machining a workpiece
US4514934A (en) * 1982-05-10 1985-05-07 Caterpillar Tractor Co. Method and apparatus for abrasively machining a workpiece
FR2540246A1 (fr) * 1983-01-28 1984-08-03 Solmer Dispositif pour detecter des criques sur les brames d'acier sortant d'une coulee continue
EP0115735A2 (fr) * 1983-01-28 1984-08-15 Societe Lorraine Et Meridionale De Laminage Continu - Solmer Dispositif pour détecter des criques sur les brames d'acier sortant d'une coulée continue
EP0115735A3 (en) * 1983-01-28 1986-03-26 Societe Lorraine Et Meridionale De Laminage Continu - Solmer Device for detecting cracks in sted slabs made by a continuous casting process
US4584746A (en) * 1983-01-28 1986-04-29 Societe Lorraine Et Meridionale De Laminage Continu - Solmer Device for detecting cracks in steel slabs leaving continuous casting
WO2016016663A3 (fr) * 2014-07-31 2016-04-07 V-Viz Ltd Système permettant une détection non destructive de défauts internes
EP4368985A1 (fr) * 2022-11-09 2024-05-15 The Boeing Company Détection de porosité pour matériaux composites à l'aide de résonance inductive

Also Published As

Publication number Publication date
FR2390729B1 (fr) 1980-03-14
BE882938Q (fr) 1980-08-18

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse