GB833884A - Magnetic surface testing - Google Patents

Magnetic surface testing

Info

Publication number
GB833884A
GB833884A GB2427957A GB2427957A GB833884A GB 833884 A GB833884 A GB 833884A GB 2427957 A GB2427957 A GB 2427957A GB 2427957 A GB2427957 A GB 2427957A GB 833884 A GB833884 A GB 833884A
Authority
GB
United Kingdom
Prior art keywords
film
oxide
lightreflecting
july
solution
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
GB2427957A
Inventor
Norman Edmund Ballard
Frank Cork
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 GB2427957A priority Critical patent/GB833884A/en
Publication of GB833884A publication Critical patent/GB833884A/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)
  • Surface Treatment Of Optical Elements (AREA)
  • Laminated Bodies (AREA)

Abstract

833,884. Magnetic tests. ROLLS-ROYCE Ltd. July 31, 1958 [July 31, 1957], No. 24279/57. Class 37. During crack testing by means of magnetic oxide powder which may be suspended in white spirits or paraffin, to render the oxide clearly visible against a dull surface, the surface is first covered with a film of non-metallic material of a colour contrasting with that of the oxide. The film is preferably light in colour and lightreflecting ; a copolymer of polyvinyl acetate and polyvinyl chloride in solution in ketone and hydrocarbon solvents together with some mineral acid is suggested. To this solution may be added titanium oxide to form a white lightreflecting film. Another suitable material is cellulose acetate butyrate incorporating titanium oxide. The film may be applied by brush, spray or aerosol.
GB2427957A 1957-07-31 1957-07-31 Magnetic surface testing Expired GB833884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2427957A GB833884A (en) 1957-07-31 1957-07-31 Magnetic surface testing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2427957A GB833884A (en) 1957-07-31 1957-07-31 Magnetic surface testing

Publications (1)

Publication Number Publication Date
GB833884A true GB833884A (en) 1960-05-04

Family

ID=10209220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2427957A Expired GB833884A (en) 1957-07-31 1957-07-31 Magnetic surface testing

Country Status (1)

Country Link
GB (1) GB833884A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344345A (en) * 1966-02-03 1967-09-26 North American Aviation Inc Resolving method comprising printing caused by impingement of a paramagnetic particulate
US3345564A (en) * 1962-10-06 1967-10-03 Toyota Motors Company Ltd Method for non-destructive detection and observation of defects of ferromagnetic steels utilizing an aqueous ferromagnetic solution
US3855526A (en) * 1973-05-16 1974-12-17 Rockwell International Corp Method of magnetic particle testing using strippable coatings
US4321534A (en) * 1980-03-12 1982-03-23 Magnaflux Corporation Magnetic particle testing procedure involving pre-coating with a hydrophobic coating
GB2119518A (en) * 1982-03-24 1983-11-16 George Victor Crowe Flaw detection method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345564A (en) * 1962-10-06 1967-10-03 Toyota Motors Company Ltd Method for non-destructive detection and observation of defects of ferromagnetic steels utilizing an aqueous ferromagnetic solution
US3344345A (en) * 1966-02-03 1967-09-26 North American Aviation Inc Resolving method comprising printing caused by impingement of a paramagnetic particulate
US3855526A (en) * 1973-05-16 1974-12-17 Rockwell International Corp Method of magnetic particle testing using strippable coatings
US4321534A (en) * 1980-03-12 1982-03-23 Magnaflux Corporation Magnetic particle testing procedure involving pre-coating with a hydrophobic coating
GB2119518A (en) * 1982-03-24 1983-11-16 George Victor Crowe Flaw detection method

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