[go: up one dir, main page]

WO2008126554A1 - Eddy current inspection method, steel pipe inspected by the eddy current inspection method, and eddy current inspection device for carrying out the eddy current inspection method - Google Patents

Eddy current inspection method, steel pipe inspected by the eddy current inspection method, and eddy current inspection device for carrying out the eddy current inspection method Download PDF

Info

Publication number
WO2008126554A1
WO2008126554A1 PCT/JP2008/054335 JP2008054335W WO2008126554A1 WO 2008126554 A1 WO2008126554 A1 WO 2008126554A1 JP 2008054335 W JP2008054335 W JP 2008054335W WO 2008126554 A1 WO2008126554 A1 WO 2008126554A1
Authority
WO
WIPO (PCT)
Prior art keywords
eddy current
current inspection
inspection method
hardness portion
carrying
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.)
Ceased
Application number
PCT/JP2008/054335
Other languages
French (fr)
Japanese (ja)
Inventor
Shigetoshi Hyodo
Satoshi Kureishi
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Publication of WO2008126554A1 publication Critical patent/WO2008126554A1/en
Anticipated expiration legal-status Critical
Ceased 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

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)

Abstract

Provided is an eddy current inspection method which can surely detect a high-hardness portion existing locally in a magnetic metal material and surely check whether the high-hardness portion has been removed after the treatment for removing the high-hardness portion. The eddy current inspection method detects presence/absence of a locally existing high-hardness portion according to a differential signal obtained by detecting an eddy current induced in a metal material P by using a pair of detection coils (11a, 11b) and identifies the position of the locally existing high-hardness portion which has been detected, according to an absolute value signal obtained by detecting the eddy current induced in the metal material by one of the detection coils.
PCT/JP2008/054335 2007-03-14 2008-03-11 Eddy current inspection method, steel pipe inspected by the eddy current inspection method, and eddy current inspection device for carrying out the eddy current inspection method Ceased WO2008126554A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007064844A JP4998821B2 (en) 2007-03-14 2007-03-14 Eddy current inspection method and eddy current inspection apparatus for implementing the eddy current inspection method
JP2007-064844 2007-03-14

Publications (1)

Publication Number Publication Date
WO2008126554A1 true WO2008126554A1 (en) 2008-10-23

Family

ID=39843296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/054335 Ceased WO2008126554A1 (en) 2007-03-14 2008-03-11 Eddy current inspection method, steel pipe inspected by the eddy current inspection method, and eddy current inspection device for carrying out the eddy current inspection method

Country Status (2)

Country Link
JP (1) JP4998821B2 (en)
WO (1) WO2008126554A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010050134A1 (en) * 2008-10-28 2010-05-06 トヨタ自動車株式会社 Frequency selection method for eddy current measurement and method of measuring depth of hardening
JP2015508897A (en) * 2012-02-23 2015-03-23 インスティトゥート ドクトル フェルスター ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト Penetration coil configuration, test apparatus having penetration coil configuration, and test method
WO2015072365A1 (en) * 2013-11-18 2015-05-21 Ntn株式会社 Eddy current flaw detection device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016057814A1 (en) * 2014-10-10 2016-04-14 Exxam Systems, LLC Eddy current pipeline inspection apparatus and method
US10746698B2 (en) 2017-01-31 2020-08-18 Exxam Systems, LLC Eddy current pipeline inspection using swept frequency
JP6948297B2 (en) * 2017-09-04 2021-10-13 Ｊｆｅスチール株式会社 Steel sheet manufacturing method, surface hardness measuring device for magnetic materials, and steel sheet manufacturing equipment line
KR102164105B1 (en) * 2018-11-30 2020-10-12 주식회사 포스코 Apparatus and method for sensing high hardness position of steel plate shrface
JP2021043160A (en) * 2019-09-13 2021-03-18 日本製鉄株式会社 Hardness change part detection device, hardness change part detection method and program
CA3182556A1 (en) 2020-06-15 2021-12-23 Takafumi Ozeki Mechanical property measuring apparatus, mechanical property measuring method, substance manufacturing equipment, substance management method, and substance manufacturing method
CN115803616A (en) 2020-06-15 2023-03-14 杰富意钢铁株式会社 Device and method for measuring mechanical properties, device and method for manufacturing substance, and method for managing substance
WO2021256443A1 (en) 2020-06-15 2021-12-23 Ｊｆｅスチール株式会社 Mechanical property measurement device, mechanical property measurement method, material manufacturing facility, material managing method, and material manufacturing method
JP7529141B2 (en) 2021-12-09 2024-08-06 Ｊｆｅスチール株式会社 Steel plate manufacturing method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026951B1 (en) * 1969-02-10 1975-09-04
JPS6039552A (en) * 1983-08-13 1985-03-01 Shimadzu Corp Eddy current flaw detector
JPS60185158A (en) * 1984-03-02 1985-09-20 Sumitomo Metal Ind Ltd Electromagnetic induction testing method and apparatus thereof
JPS62174651A (en) * 1986-01-28 1987-07-31 Suzuki Motor Co Ltd Method and device for deciding hardness of magnetic body
JPH11189844A (en) * 1997-12-25 1999-07-13 Kansai Electric Power Co Inc:The ERW steel pipe for steel towers having excellent hot-dip galvanizing crack resistance and method for producing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026951B1 (en) * 1969-02-10 1975-09-04
JPS6039552A (en) * 1983-08-13 1985-03-01 Shimadzu Corp Eddy current flaw detector
JPS60185158A (en) * 1984-03-02 1985-09-20 Sumitomo Metal Ind Ltd Electromagnetic induction testing method and apparatus thereof
JPS62174651A (en) * 1986-01-28 1987-07-31 Suzuki Motor Co Ltd Method and device for deciding hardness of magnetic body
JPH11189844A (en) * 1997-12-25 1999-07-13 Kansai Electric Power Co Inc:The ERW steel pipe for steel towers having excellent hot-dip galvanizing crack resistance and method for producing the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010050134A1 (en) * 2008-10-28 2010-05-06 トヨタ自動車株式会社 Frequency selection method for eddy current measurement and method of measuring depth of hardening
JP2010107214A (en) * 2008-10-28 2010-05-13 Toyota Motor Corp Frequency selecting method and quench depth measuring method in measuring eddy current
US8432161B2 (en) 2008-10-28 2013-04-30 Toyota Jidosha Kabushiki Kaisha Frequency selection method and hardening depth measurement method of eddy current measurement
JP2015508897A (en) * 2012-02-23 2015-03-23 インスティトゥート ドクトル フェルスター ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト Penetration coil configuration, test apparatus having penetration coil configuration, and test method
WO2015072365A1 (en) * 2013-11-18 2015-05-21 Ntn株式会社 Eddy current flaw detection device
JP2015099043A (en) * 2013-11-18 2015-05-28 Ntn株式会社 Eddy current test device

Also Published As

Publication number Publication date
JP4998821B2 (en) 2012-08-15
JP2008224495A (en) 2008-09-25

Similar Documents

Publication Publication Date Title
WO2008126554A1 (en) Eddy current inspection method, steel pipe inspected by the eddy current inspection method, and eddy current inspection device for carrying out the eddy current inspection method
WO2008126553A1 (en) Eddy current inspection method, steel pipe inspected by the eddy current inspection method, and eddy current inspection device for carrying out the eddy current inspection method
WO2008002938A3 (en) Methods and apparatus for sensing unconfinement in a plasma processing chamber
WO2011112702A3 (en) Apparatus, system and method for detecting the presence of genuine serviceable product components
WO2010010318A3 (en) Monitoring of the position of a pipe inspection tool in a pipeline
WO2008105893A3 (en) Pathogen detection by simultaneous size/fluorescence measurement
FR2953932B1 (en) METHOD FOR SEPARATING AND DETECTING AN ANALYTE
EP1262771A3 (en) Pipe condition detecting apparatus
DE602004003811T8 (en) OBJECT DETECTION SYSTEM AND METHOD FOR DETECTING AN OBJECT
WO2008028017A3 (en) Method and system of detecting faults in a breathing assistance device
BRPI1013279A2 (en) apparatus for measuring ferromagnetic tube thickness using remote field eddy current detection, apparatus for measuring defects in a well tube using remote field eddy current measurement, apparatus for measuring defects in a tube using remote field eddy current measurement, and method for removing phantom defects from a remote-sensing eddy current detection device.
EP2085769A4 (en) SUBSTANCE DETECTING FORMALDEHYDE, FORMALDEHYDE DETECTOR, METHOD FOR DETECTING FORMALDEHYDE, AND REAGENT DETECTING FORMALDEHYDE
DE602007007243D1 (en) SENSOR DEVICE AND METHOD FOR DETECTING MAGNETIC PARTICLES
FR2952857B1 (en) METHOD FOR REPLACING A DETECTION HOUSING PLACED INSIDE THE WHEELS OF A VEHICLE, DEVICE AND SENSOR FOR CARRYING OUT SAID METHOD
EP2088427A4 (en) Follow-up device for detecting flaw of pipe and automatic flaw detection apparatus of pipe employing it
PL2075600T3 (en) An article detection apparatus and a detecting method
WO2010121223A3 (en) Electromagnetic molecular sensors and methods of using same
ATE525705T1 (en) CHARACTERISTIC BEAMLET TRANSFORMATION APPARATUS AND RELATED METHODOLOGY FOR DETECTING CURVILINE OBJECTS OF AN IMAGE
FR2904446B1 (en) METHOD FOR DETECTING AND QUANTIFYING DRILLING ANOMALIES
WO2004081519A3 (en) Method and apparatus for detecting a gas
WO2008138848A3 (en) Device for and method of determining a position of a movable object
CN106596710A (en) Detection method for health situation of underground pipe network
WO2009054353A1 (en) Coolant leak detection method
DE502007002893D1 (en) Apparatus for detecting an object in the detection area of a sensor device and method for its operation
WO2010005700A3 (en) Method for detection of oversized sub-resolution assist features

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08721751

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08721751

Country of ref document: EP

Kind code of ref document: A1