JPS541682A - Defect detecting method for surfaces of materials being examined with pickup tube - Google Patents

Defect detecting method for surfaces of materials being examined with pickup tube

Info

Publication number
JPS541682A
JPS541682A JP6647077A JP6647077A JPS541682A JP S541682 A JPS541682 A JP S541682A JP 6647077 A JP6647077 A JP 6647077A JP 6647077 A JP6647077 A JP 6647077A JP S541682 A JPS541682 A JP S541682A
Authority
JP
Japan
Prior art keywords
examined
materials
detecting method
defect detecting
pickup tube
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
JP6647077A
Other languages
Japanese (ja)
Inventor
Itsuo Ikuno
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 JP6647077A priority Critical patent/JPS541682A/en
Publication of JPS541682A publication Critical patent/JPS541682A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE: To surely detect even minute flaws on the surface of the material being examined moving at a high speed by detecting the fluorescent magnetic powder patterns owing to the defects on the surface of the moving material being examined, inspecting plural horizontal scanning lines and performing defect detection through OR.
COPYRIGHT: (C)1979,JPO&Japio
JP6647077A 1977-06-06 1977-06-06 Defect detecting method for surfaces of materials being examined with pickup tube Pending JPS541682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6647077A JPS541682A (en) 1977-06-06 1977-06-06 Defect detecting method for surfaces of materials being examined with pickup tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6647077A JPS541682A (en) 1977-06-06 1977-06-06 Defect detecting method for surfaces of materials being examined with pickup tube

Publications (1)

Publication Number Publication Date
JPS541682A true JPS541682A (en) 1979-01-08

Family

ID=13316693

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6647077A Pending JPS541682A (en) 1977-06-06 1977-06-06 Defect detecting method for surfaces of materials being examined with pickup tube

Country Status (1)

Country Link
JP (1) JPS541682A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4897806A (en) * 1972-03-30 1973-12-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4897806A (en) * 1972-03-30 1973-12-13

Similar Documents

Publication Publication Date Title
JPS55125439A (en) Defect inspection device
JPS541682A (en) Defect detecting method for surfaces of materials being examined with pickup tube
JPS5355983A (en) Automatic micro defect detector
JPS54111881A (en) Ultrasonic flaw detection method
ES8305929A1 (en) Method and device for the inspection of transparent material sheets.
JPS5421790A (en) Sealing defect detector of canned products
JPS5312377A (en) Inspecting apparatus for surface
JPS5224554A (en) Surface inspection device
JPS52139485A (en) Follow-up apparatus for use in high-speed ultrasonic flaw detection
JPS5238992A (en) Continous flaw identification method for steel products
JPS5398871A (en) Shape inspecting apparatus
JPS5661645A (en) Thin-steel plate flaw detector using magnetism
JPS5412885A (en) Function inspecting method and device for eddy current flaw detecting machine
JPS5385488A (en) Ultrasonic flaw detecting method
JPS5242179A (en) Ultrasonic flaw detection method and apparatus for same
JPS5242791A (en) Method of controlling driving of ultrasonic flaw detection
JPS5676075A (en) Detecting method of material buried underground and device thereof
JPS5231784A (en) Ultrasonic flaw detection method for welded steel pipe ends
JPS51147378A (en) Flaw detecting method of steel pieces
JPS5231785A (en) Magnetic poweder flaw detection method and apparatus for steel pipes
Luz Surface crack detection by the high-energy ac-leakage flux method
JPS5411793A (en) Immersion type oblique flaw detecting method and apparatus for the same
JPS5292783A (en) Detecting end of flaw detector
JPS53107387A (en) Method and apparatus for eddy current non-destructive flaw detection
JPS5767852A (en) Method and apparatus for flaw detection