GB1071683A - Method of and device for detecting faults in rolled metallic products - Google Patents

Method of and device for detecting faults in rolled metallic products

Info

Publication number
GB1071683A
GB1071683A GB22515/64A GB2251564A GB1071683A GB 1071683 A GB1071683 A GB 1071683A GB 22515/64 A GB22515/64 A GB 22515/64A GB 2251564 A GB2251564 A GB 2251564A GB 1071683 A GB1071683 A GB 1071683A
Authority
GB
United Kingdom
Prior art keywords
metallic products
rolled metallic
coils
detecting faults
differentially connected
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.)
Expired
Application number
GB22515/64A
Other languages
English (en)
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.)
LEANORD
Lorraine Escaut SA
Original Assignee
LEANORD
Lorraine Escaut SA
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 LEANORD, Lorraine Escaut SA filed Critical LEANORD
Publication of GB1071683A publication Critical patent/GB1071683A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/02Investigating the presence of flaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B38/00Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90Investigating 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
    • G01N27/9006Details, e.g. in the structure or functioning of sensors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
GB22515/64A 1963-10-21 1964-06-01 Method of and device for detecting faults in rolled metallic products Expired GB1071683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR951234A FR1380662A (fr) 1963-10-21 1963-10-21 Procédé et dispositif de détection des défauts dans un produit laminé

Publications (1)

Publication Number Publication Date
GB1071683A true GB1071683A (en) 1967-06-14

Family

ID=8814809

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22515/64A Expired GB1071683A (en) 1963-10-21 1964-06-01 Method of and device for detecting faults in rolled metallic products

Country Status (4)

Country Link
BE (1) BE648885A (fr)
DE (1) DE1473516B2 (fr)
FR (1) FR1380662A (fr)
GB (1) GB1071683A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000561A1 (fr) * 1981-07-28 1983-02-17 Melgui, Mikhail, Aleksandrovich Procede et dispositif de controle electromagnetique des proprietes mecaniques d'un objet ferromagnetique en mouvement
DE3152919C2 (de) * 1981-07-28 1987-09-17 Inst Prikladnoj Fiz Akademii N Verfahren und Vorrichtung zur magnetischen Pr}fungmechanischer Eigenschaften

Also Published As

Publication number Publication date
BE648885A (fr) 1964-12-07
DE1473516A1 (de) 1968-11-28
FR1380662A (fr) 1964-12-04
DE1473516B2 (de) 1976-05-06

Similar Documents

Publication Publication Date Title
GB1005816A (en) Improvements relating to methods of and apparatus for the detection of flaws
GB1071683A (en) Method of and device for detecting faults in rolled metallic products
CA653719A (en) Probe device for flaw detection
GB1161106A (en) An Electroinductive Sensing Device.
GB1113006A (en) Method and apparatus for magnetic reaction testing
GB573182A (en) Improvements in or relating to the detection of faults in articles of non-magnetic material
GB766353A (en) Improvements in and relating to non-destructive testing of ferromagnetic workpieces
GB928500A (en) Method and apparatus for determining the electrical properties of travelling steel strip
JPS5233788A (en) Signal identification apparatus in ae signal position detection appara tus
CA483863A (fr) Appareil pour mesurer et decouvrir des objects magnetiques
GB1267434A (en) Apparatus and method of testing a magnetic recording medium
FR2404856A1 (fr) Procede et dispositif de mesure de la vitesse d'objets
CA730071A (en) Method and means for radioactive magnetic flaw detection
GB910496A (en) Improvements in or relating to the detection of electrical discontinuities in weldedjoints
JPS53135378A (en) Electromagnetical non-destructive flaw detection method and apparatus for the same
CA632073A (en) Method and means for inductive and automatic fault detection
CA744882A (en) Apparatus for testing magnetic tapes for faults
GB754200A (en) Improvements in devices for detecting faults in long distance electric cables
JPS5275409A (en) System for assessing mean values of signal levels of reproduction sign als from magnetic tapes
CH521591A (de) Verfahren und Einrichtung zur Messung der Frequenz eines elektrischen Signals
AU259417B2 (en) Signal detection circuit for detecting character information signals contained ina complex electrical signal
AU435342B2 (en) Test tape and method for detecting enzymes
CA759591A (en) Graphical nulling device for nondestructive eddy current testing equipment
AU1928367A (en) Magnetic reaction testing apparatus and method of testing apparatus utilizing semiconductor means for magnetic field sensing of an eddy current-reaction magnetic field
GB1341727A (en) Non-destructive testing