GB151383A - An improved method of, and means for, testing the hardness of ferrous metals - Google Patents

An improved method of, and means for, testing the hardness of ferrous metals

Info

Publication number
GB151383A
GB151383A GB1640119A GB1640119A GB151383A GB 151383 A GB151383 A GB 151383A GB 1640119 A GB1640119 A GB 1640119A GB 1640119 A GB1640119 A GB 1640119A GB 151383 A GB151383 A GB 151383A
Authority
GB
United Kingdom
Prior art keywords
specimen
coil
hardness
ferrous metals
testing
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
GB1640119A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1640119A priority Critical patent/GB151383A/en
Publication of GB151383A publication Critical patent/GB151383A/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
    • G01N27/80—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

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)
  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

151,383. Wild, L. W. June 30, 1919. Magnetic tests and measurements.-The hardness of ferrous metals is determined by.measuring the residual magnetism. The specimen is intro. duced into a standard magnetizing-coil a enclosed in a removable yoke b. A current sufficient to saturate the specimen is flashed on to the coil a for a very short time, say less than one second, by a switch c. The specimen is then removed from the coil a and inserted into a search coil e connected to a fluxmeter or ballistic galvanometer d, the throw of which is noted on quickly withdrawing the specimen. A condenser f reduces sparking at the switch c.
GB1640119A 1919-06-30 1919-06-30 An improved method of, and means for, testing the hardness of ferrous metals Expired GB151383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1640119A GB151383A (en) 1919-06-30 1919-06-30 An improved method of, and means for, testing the hardness of ferrous metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1640119A GB151383A (en) 1919-06-30 1919-06-30 An improved method of, and means for, testing the hardness of ferrous metals

Publications (1)

Publication Number Publication Date
GB151383A true GB151383A (en) 1920-09-30

Family

ID=10076647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1640119A Expired GB151383A (en) 1919-06-30 1919-06-30 An improved method of, and means for, testing the hardness of ferrous metals

Country Status (1)

Country Link
GB (1) GB151383A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1169158B (en) * 1959-07-24 1964-04-30 Deutsche Edelstahlwerke Ag Method for determining the depth of attachment on objects made of ferromagnetic material
WO1988002842A1 (en) * 1986-10-10 1988-04-21 Sten Linder A method and measuring system for contactless measuring the values of magnitudes relating to electrically conductive materials
CN115266905A (en) * 2022-08-02 2022-11-01 西华大学 Crack detection method and device for heavy-duty commercial vehicle engine crankshaft recycling remanufacturing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1169158B (en) * 1959-07-24 1964-04-30 Deutsche Edelstahlwerke Ag Method for determining the depth of attachment on objects made of ferromagnetic material
WO1988002842A1 (en) * 1986-10-10 1988-04-21 Sten Linder A method and measuring system for contactless measuring the values of magnitudes relating to electrically conductive materials
US5059902A (en) * 1986-10-10 1991-10-22 Sten Linder Electromagnetic method and system using voltage induced by a decaying magnetic field to determine characteristics, including distance, dimensions, conductivity and temperature, of an electrically conductive material
CN115266905A (en) * 2022-08-02 2022-11-01 西华大学 Crack detection method and device for heavy-duty commercial vehicle engine crankshaft recycling remanufacturing

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