GB299388A - Improvements in or relating to magnetic sclerometers - Google Patents
Improvements in or relating to magnetic sclerometersInfo
- Publication number
- GB299388A GB299388A GB21817/28A GB2181728A GB299388A GB 299388 A GB299388 A GB 299388A GB 21817/28 A GB21817/28 A GB 21817/28A GB 2181728 A GB2181728 A GB 2181728A GB 299388 A GB299388 A GB 299388A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- magnetic circuit
- article
- voltmeter
- reluctance
- 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
Links
- 238000004804 winding Methods 0.000 abstract 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
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)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
299,388. Renault, L. Oct. 25, 1927, [Convention date]. Magnetic measurements.-The hardness of a metallic article, such as a ball-bearing ring, is measured by measuring its effect on the reluctance of a magnetic circuit, of which it is arranged to form apart. The article 1 to be tested closes the magnetic circuit of an electromagnet 2, the windings 3 of which are in series with the secondary winding 6 of a step-down transformer and with an adjustable resistance 7 across which is connected a voltmeter 10. The reading of the voltmeter 10 is a measure of the current flowing in the coils 3, which is dependent on the reluctance of the magnetic circuit and therefore on the hardness of the article 1. The transformer 5, 6 has a saturated core, which renders the apparatus independent of fluctuations of supply voltages.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR299388X | 1922-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB299388A true GB299388A (en) | 1929-08-08 |
Family
ID=8888382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21817/28A Expired GB299388A (en) | 1922-10-25 | 1928-07-27 | Improvements in or relating to magnetic sclerometers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB299388A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2427774A (en) * | 1943-10-09 | 1947-09-23 | Gen Motors Corp | Method and apparatus for magnetically testing the hardness of paramagnetic objects |
| US2572908A (en) * | 1948-09-18 | 1951-10-30 | Standard Oil Co | Thickness gauge for magnetic material |
| DE973803C (en) * | 1941-09-30 | 1960-06-09 | Siemens Ag | Device for the direct determination of the loss figures of undivided electrical steel sheets, especially at 10 K Gauss and 15 K Gauss |
| US3281666A (en) * | 1960-10-28 | 1966-10-25 | Toyota Motors Company Ltd | Method of testing hardened steel articles utilizing the irreversible portion of the magnetization curve |
-
1928
- 1928-07-27 GB GB21817/28A patent/GB299388A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE973803C (en) * | 1941-09-30 | 1960-06-09 | Siemens Ag | Device for the direct determination of the loss figures of undivided electrical steel sheets, especially at 10 K Gauss and 15 K Gauss |
| US2427774A (en) * | 1943-10-09 | 1947-09-23 | Gen Motors Corp | Method and apparatus for magnetically testing the hardness of paramagnetic objects |
| US2572908A (en) * | 1948-09-18 | 1951-10-30 | Standard Oil Co | Thickness gauge for magnetic material |
| US3281666A (en) * | 1960-10-28 | 1966-10-25 | Toyota Motors Company Ltd | Method of testing hardened steel articles utilizing the irreversible portion of the magnetization curve |
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