FR2390728A1 - Procede et appareil pour le controle de pieces d'usinage ferromagnetique - Google Patents

Procede et appareil pour le controle de pieces d'usinage ferromagnetique

Info

Publication number
FR2390728A1
FR2390728A1 FR7814312A FR7814312A FR2390728A1 FR 2390728 A1 FR2390728 A1 FR 2390728A1 FR 7814312 A FR7814312 A FR 7814312A FR 7814312 A FR7814312 A FR 7814312A FR 2390728 A1 FR2390728 A1 FR 2390728A1
Authority
FR
France
Prior art keywords
inspection
workpiece
voltage
ferromagnetic workpieces
measurement
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.)
Pending
Application number
FR7814312A
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.)
SKF Industrial Trading and Development Co BV
Original Assignee
SKF Industrial Trading and Development Co BV
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 SKF Industrial Trading and Development Co BV filed Critical SKF Industrial Trading and Development Co BV
Publication of FR2390728A1 publication Critical patent/FR2390728A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/904—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

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)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

Dans le procédé et l'appareil de la présente invention, la pièce d'usinage 14 est aimantée par une bobine 12 parcourue par un courant et une tension de mesure ou de comparaison est prélevée de ladite pièce d'usinage ou d'une bobine secondaire 13 couplée à cette pièce, une seconde tension étant fournie par un capteur 18 placé près de la surface de la pièce d'usinage, ladite seconde tension dépendant du champ magnétique en cet endroit, après quoi les deux tensions sont combinées pour obtenir en A et B une quantité de mesure ou de régulation.
FR7814312A 1977-05-13 1978-05-12 Procede et appareil pour le controle de pieces d'usinage ferromagnetique Pending FR2390728A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7705299A NL7705299A (nl) 1977-05-13 1977-05-13 Werkwijze en inrichting voor het onderzoek van ferromagnetische werkstukken.

Publications (1)

Publication Number Publication Date
FR2390728A1 true FR2390728A1 (fr) 1978-12-08

Family

ID=19828549

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814312A Pending FR2390728A1 (fr) 1977-05-13 1978-05-12 Procede et appareil pour le controle de pieces d'usinage ferromagnetique

Country Status (12)

Country Link
JP (1) JPS53141686A (fr)
BR (1) BR7802982A (fr)
DD (1) DD135539A5 (fr)
DE (1) DE2820559A1 (fr)
ES (1) ES469764A1 (fr)
FI (1) FI781482A (fr)
FR (1) FR2390728A1 (fr)
GB (1) GB1604188A (fr)
IT (1) IT1112654B (fr)
NL (1) NL7705299A (fr)
SE (1) SE7805243L (fr)
ZA (1) ZA782413B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503393A (en) * 1981-10-05 1985-03-05 Exxon Production Research Co. Method and apparatus for detecting flaws in the threaded end of an elongate member using electromagnetic excitation and an automated scanning sensor
US4510447A (en) * 1981-10-26 1985-04-09 Exxon Production Research Co. Inspection apparatus for electromagnetically detecting flaws in the wall of a pipe

Also Published As

Publication number Publication date
DD135539A5 (de) 1979-05-09
ZA782413B (en) 1979-04-25
ES469764A1 (es) 1979-10-01
SE7805243L (sv) 1978-11-14
BR7802982A (pt) 1979-01-02
IT1112654B (it) 1986-01-20
DE2820559A1 (de) 1978-11-23
IT7819761A0 (it) 1978-01-30
JPS53141686A (en) 1978-12-09
FI781482A (fi) 1978-11-14
NL7705299A (nl) 1978-11-15
GB1604188A (en) 1981-12-02

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