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JPS5734449A - Eddy flaw detector - Google Patents

Eddy flaw detector

Info

Publication number
JPS5734449A
JPS5734449A JP10961480A JP10961480A JPS5734449A JP S5734449 A JPS5734449 A JP S5734449A JP 10961480 A JP10961480 A JP 10961480A JP 10961480 A JP10961480 A JP 10961480A JP S5734449 A JPS5734449 A JP S5734449A
Authority
JP
Japan
Prior art keywords
box body
detection
probe
flaws
slab
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
JP10961480A
Other languages
Japanese (ja)
Inventor
Tatsuo Hiroshima
Yukio Kubo
Tomiaki Ono
Katsumi Taguchi
Fumio Iida
Akio Tamaoki
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.)
HARA DENSHI SOKKI KK
Nippon Steel Corp
Eddio Corp
Original Assignee
HARA DENSHI SOKKI KK
Sumitomo Metal Industries Ltd
Eddio Corp
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 HARA DENSHI SOKKI KK, Sumitomo Metal Industries Ltd, Eddio Corp filed Critical HARA DENSHI SOKKI KK
Priority to JP10961480A priority Critical patent/JPS5734449A/en
Publication of JPS5734449A publication Critical patent/JPS5734449A/en
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
    • G01N27/9006—Details, e.g. in the structure or functioning of 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)

Abstract

PURPOSE:To enable detection of flaws on the surface of a slab in red-hot glowing state with a cooling means provided on a probe. CONSTITUTION:Rollers 110 are provided before and after a box body 11q of a probe 11p in such a manner as to turn in contact with the surface of a slab. A plurality of rectangular detection coils 11c are arranged on the circumference of one circle like a sector separated by an equal angle to form one probe unit 113. The detection coils 11c are changed lengthwise separately to make the flaw detection sensitivity nondirectional thereby enabling the detection of the flaws in a constant sensitivity regardless of the direction thereof. A cylindrical seat 116 is provided on the top surface of the box body 11q concentric to a hole 11a through which a signal cable 114 is inserted to be connected to an exciting coil. A flexible pipe 115 screwed to a connecting tube 117 screwed down to the cylindrical seat 116 through a filler 116a and a rubber packing 116. A cooling water is fed into the box body 11q via a branch tube 118 provided between the side of the connecting tube 117 and the top surface of the box body 11q.
JP10961480A 1980-08-09 1980-08-09 Eddy flaw detector Pending JPS5734449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10961480A JPS5734449A (en) 1980-08-09 1980-08-09 Eddy flaw detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10961480A JPS5734449A (en) 1980-08-09 1980-08-09 Eddy flaw detector

Publications (1)

Publication Number Publication Date
JPS5734449A true JPS5734449A (en) 1982-02-24

Family

ID=14514754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10961480A Pending JPS5734449A (en) 1980-08-09 1980-08-09 Eddy flaw detector

Country Status (1)

Country Link
JP (1) JPS5734449A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187858A (en) * 1984-03-08 1985-09-25 Hara Denshi Sokki Kk Hot flaw detector
JPS60261710A (en) * 1984-06-04 1985-12-25 イートン　コーポレーシヨン Concentrated tire expansion system
JPS6228165U (en) * 1985-08-06 1987-02-20
JPS6228163U (en) * 1985-08-06 1987-02-20

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5292782A (en) * 1976-01-31 1977-08-04 Shimadzu Corp Water-cooled flaw detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5292782A (en) * 1976-01-31 1977-08-04 Shimadzu Corp Water-cooled flaw detector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187858A (en) * 1984-03-08 1985-09-25 Hara Denshi Sokki Kk Hot flaw detector
JPH0458573B2 (en) * 1984-03-08 1992-09-17 Eddio Corp
JPS60261710A (en) * 1984-06-04 1985-12-25 イートン　コーポレーシヨン Concentrated tire expansion system
JPS6228165U (en) * 1985-08-06 1987-02-20
JPS6228163U (en) * 1985-08-06 1987-02-20
JPH0424448Y2 (en) * 1985-08-06 1992-06-09

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