GB934116A - Improvements relating to the examination or recording of flaws in a ferro-magnetic workpiece - Google Patents

Improvements relating to the examination or recording of flaws in a ferro-magnetic workpiece

Info

Publication number
GB934116A
GB934116A GB1710161A GB1710161A GB934116A GB 934116 A GB934116 A GB 934116A GB 1710161 A GB1710161 A GB 1710161A GB 1710161 A GB1710161 A GB 1710161A GB 934116 A GB934116 A GB 934116A
Authority
GB
United Kingdom
Prior art keywords
flaws
workpiece
polyvinyl chloride
ferro
examination
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
GB1710161A
Inventor
John Derek Hislop
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB1710161A priority Critical patent/GB934116A/en
Publication of GB934116A publication Critical patent/GB934116A/en
Expired 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
    • G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
    • G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink

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)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

934,116. Testing flaws. ROLLS-ROYCE Ltd. May 4, 1962 [May 10, 1961], No. 17101/61. Class 106 (2). Flaws in a surface, particularly a not-easily accessible surface such as narrow blind bores and grooving, of a ferromagnetic workpiece are located and permanently recorded by treating the surface with a suspension in a volatile liquid of magnetic particles, which will tend to collect mostly in flaws, and then applying a moulding material such as molten polyvinyl chloride to which the particles will adhere and which can be separated from the workpiece on hardening. The regions of magnetic particles on the polyvinyl chloride record member, corresponding to flaws in the workpiece, may be marked. In the case of a blind bore, the molten polyvinyl chloride may be poured into the bore and then extracted when hard. In other cases the entire workpiece may be dipped into the molten polyvinyl chloride and the hardened coating later removed in two parts.
GB1710161A 1961-05-10 1961-05-10 Improvements relating to the examination or recording of flaws in a ferro-magnetic workpiece Expired GB934116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1710161A GB934116A (en) 1961-05-10 1961-05-10 Improvements relating to the examination or recording of flaws in a ferro-magnetic workpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1710161A GB934116A (en) 1961-05-10 1961-05-10 Improvements relating to the examination or recording of flaws in a ferro-magnetic workpiece

Publications (1)

Publication Number Publication Date
GB934116A true GB934116A (en) 1963-08-14

Family

ID=10089272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1710161A Expired GB934116A (en) 1961-05-10 1961-05-10 Improvements relating to the examination or recording of flaws in a ferro-magnetic workpiece

Country Status (1)

Country Link
GB (1) GB934116A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164161A (en) * 1984-09-06 1986-03-12 Gramos Chemicals International Method of inspecting a surface for flaws
EP0210794A2 (en) * 1985-07-23 1987-02-04 BP Chemicals Limited Detection of defects on structures

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164161A (en) * 1984-09-06 1986-03-12 Gramos Chemicals International Method of inspecting a surface for flaws
EP0210794A2 (en) * 1985-07-23 1987-02-04 BP Chemicals Limited Detection of defects on structures
EP0210794A3 (en) * 1985-07-23 1988-01-20 BP Chemicals Limited Detection of defects on structures
US4759211A (en) * 1985-07-23 1988-07-26 Bp Chemicals Limited Detection of defects on structures
AU586007B2 (en) * 1985-07-23 1989-06-29 Bp Chemicals Limited Detection of defects on structures

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