WO2003052439A3 - Detecting magnetic rotational non-uniformity - Google Patents

Detecting magnetic rotational non-uniformity Download PDF

Info

Publication number
WO2003052439A3
WO2003052439A3 PCT/EP2002/014520 EP0214520W WO03052439A3 WO 2003052439 A3 WO2003052439 A3 WO 2003052439A3 EP 0214520 W EP0214520 W EP 0214520W WO 03052439 A3 WO03052439 A3 WO 03052439A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
uniformity
detector
source
magnetisation
Prior art date
Application number
PCT/EP2002/014520
Other languages
French (fr)
Other versions
WO2003052439A2 (en
Inventor
Lutz Axel May
Original Assignee
Fast Technology Ag
Lutz Axel May
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 Fast Technology Ag, Lutz Axel May filed Critical Fast Technology Ag
Priority to AU2002366373A priority Critical patent/AU2002366373A1/en
Publication of WO2003052439A2 publication Critical patent/WO2003052439A2/en
Publication of WO2003052439A3 publication Critical patent/WO2003052439A3/en

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
    • G01N27/80—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

A method and apparatus is disclosed to characterise a part with respect to an axis through the part.The part is exemplified as a ferromagnetic shaft (10) rotatable about a longitudinal axis (A-A). A source of magnetisation (22), a permanent magnet or an electromagnet, is located adjacent the shaft (10) to magnetise the local surface-adjacent zone (12) of the shaft (10). The shaft is rotated so that the local magnetisation carries to a magnetic field detector (26) axially aligned with, but angularly offset from, source (22). The output from the detector (26) varies with angle in accordance with some magnetic property of the shaft (10). The shaft (10) may be given an axial translation by means (16) to enable the surface of the shaft (10) to be successively scanned. An alternative arrangement uses an in-line source and detector. A particular application is to investigating the uniformity of case-hardening of steel shafts.
PCT/EP2002/014520 2001-12-14 2002-12-16 Detecting magnetic rotational non-uniformity WO2003052439A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002366373A AU2002366373A1 (en) 2001-12-14 2002-12-16 Detecting magnetic rotational non-uniformity

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0129982.5 2001-12-14
GB0129982A GB0129982D0 (en) 2001-12-14 2001-12-14 Detecting magnetic rotational non-uniformity

Publications (2)

Publication Number Publication Date
WO2003052439A2 WO2003052439A2 (en) 2003-06-26
WO2003052439A3 true WO2003052439A3 (en) 2004-02-19

Family

ID=9927657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/014520 WO2003052439A2 (en) 2001-12-14 2002-12-16 Detecting magnetic rotational non-uniformity

Country Status (3)

Country Link
AU (1) AU2002366373A1 (en)
GB (1) GB0129982D0 (en)
WO (1) WO2003052439A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114062985B (en) * 2021-11-03 2023-08-11 人本股份有限公司 Bearing residual magnetism detection device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2295382A (en) * 1940-07-12 1942-09-08 Westinghouse Electric & Mfg Co Device for magnetic measurements and inspection
US4727321A (en) * 1985-05-03 1988-02-23 Nukem Gmbh Method and device for magnetic and ultrasonic testing of ferro-magnetic objects
US4864239A (en) * 1983-12-05 1989-09-05 General Electric Company Cylindrical bearing inspection

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2295382A (en) * 1940-07-12 1942-09-08 Westinghouse Electric & Mfg Co Device for magnetic measurements and inspection
US4864239A (en) * 1983-12-05 1989-09-05 General Electric Company Cylindrical bearing inspection
US4727321A (en) * 1985-05-03 1988-02-23 Nukem Gmbh Method and device for magnetic and ultrasonic testing of ferro-magnetic objects

Also Published As

Publication number Publication date
AU2002366373A8 (en) 2003-06-30
GB0129982D0 (en) 2002-02-06
WO2003052439A2 (en) 2003-06-26
AU2002366373A1 (en) 2003-06-30

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