JPH0252988B2 - - Google Patents

Info

Publication number
JPH0252988B2
JPH0252988B2 JP19195883A JP19195883A JPH0252988B2 JP H0252988 B2 JPH0252988 B2 JP H0252988B2 JP 19195883 A JP19195883 A JP 19195883A JP 19195883 A JP19195883 A JP 19195883A JP H0252988 B2 JPH0252988 B2 JP H0252988B2
Authority
JP
Japan
Prior art keywords
flaw
flaws
signal
filter
roll
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
JP19195883A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6082958A (ja
Inventor
Koji Kawamura
Shinichi Myake
Yoshiki Urasawa
Takaharu Kawamoto
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
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP19195883A priority Critical patent/JPS6082958A/ja
Publication of JPS6082958A publication Critical patent/JPS6082958A/ja
Publication of JPH0252988B2 publication Critical patent/JPH0252988B2/ja
Granted 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

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)
JP19195883A 1983-10-14 1983-10-14 ロ−ル表面疵の渦流探傷方法 Granted JPS6082958A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19195883A JPS6082958A (ja) 1983-10-14 1983-10-14 ロ−ル表面疵の渦流探傷方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19195883A JPS6082958A (ja) 1983-10-14 1983-10-14 ロ−ル表面疵の渦流探傷方法

Publications (2)

Publication Number Publication Date
JPS6082958A JPS6082958A (ja) 1985-05-11
JPH0252988B2 true JPH0252988B2 (enExample) 1990-11-15

Family

ID=16283272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19195883A Granted JPS6082958A (ja) 1983-10-14 1983-10-14 ロ−ル表面疵の渦流探傷方法

Country Status (1)

Country Link
JP (1) JPS6082958A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5970784B2 (ja) * 2011-11-15 2016-08-17 Ｊｆｅスチール株式会社 ロール表層欠陥検出装置

Also Published As

Publication number Publication date
JPS6082958A (ja) 1985-05-11

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