JPS57116249A - Magnetizing device - Google Patents

Magnetizing device

Info

Publication number
JPS57116249A
JPS57116249A JP209181A JP209181A JPS57116249A JP S57116249 A JPS57116249 A JP S57116249A JP 209181 A JP209181 A JP 209181A JP 209181 A JP209181 A JP 209181A JP S57116249 A JPS57116249 A JP S57116249A
Authority
JP
Japan
Prior art keywords
defect
magnet
tested
guide rollers
finding
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
JP209181A
Other languages
Japanese (ja)
Inventor
Retsu Kaminaga
Satoshi Nakazawa
Wahei Kojima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP209181A priority Critical patent/JPS57116249A/en
Publication of JPS57116249A publication Critical patent/JPS57116249A/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

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 uniform magnetization a whole defect-finding surface even for a material to be tested having an uneven surface, by a method wherein a magnet is mounted through a cushioning substance, expanding and contracting vertically, transversely and longitudinally, on a coupling body guided over the material to be tested by two guide rollers. CONSTITUTION:A magnet 20 is mounted to a coupling body 16 via a leaf spring 22, and thereby even if concavities and convexities are formed in a defect-finding surface 26 of a material 26 to be tested and in a rolling direction of guide rollers 12A and 12B and in a direction perpendicular to said direction, the magnet 20 can move vertically, transversely, and longitudinally against the rolling direction of the guide rollers 12A and 12B through the working of the leaf spring 22, and thereby slides along the defect-finding surface 26A to magnetize it uniformly and thoroughly. This enables to perform a highly precise magnetization defect-finding.
JP209181A 1981-01-12 1981-01-12 Magnetizing device Pending JPS57116249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP209181A JPS57116249A (en) 1981-01-12 1981-01-12 Magnetizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP209181A JPS57116249A (en) 1981-01-12 1981-01-12 Magnetizing device

Publications (1)

Publication Number Publication Date
JPS57116249A true JPS57116249A (en) 1982-07-20

Family

ID=11519672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP209181A Pending JPS57116249A (en) 1981-01-12 1981-01-12 Magnetizing device

Country Status (1)

Country Link
JP (1) JPS57116249A (en)

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