GB1192218A - A Device for the Automatic Inspection of Ferromagnetic Products by Magnetoscopy. - Google Patents
A Device for the Automatic Inspection of Ferromagnetic Products by Magnetoscopy.Info
- Publication number
- GB1192218A GB1192218A GB5583667A GB5583667A GB1192218A GB 1192218 A GB1192218 A GB 1192218A GB 5583667 A GB5583667 A GB 5583667A GB 5583667 A GB5583667 A GB 5583667A GB 1192218 A GB1192218 A GB 1192218A
- Authority
- GB
- United Kingdom
- Prior art keywords
- article
- fluorescence
- signal
- flaw
- dec
- 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
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)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
1,192,218. Detecting flaws. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. Dec. 8, 1967 [Dec. 29, 1966], No.55836/67. Heading G1A. In a method and apparatus for the automatic inspection of an article of a series of ferro-magnetic articles moving along a predetermined path wherein a magnetic field is established in the article, the article is coated with a paramagnetic fluorescent substance, the coating is irradiated into fluorescence, and the fluorescence is used to develop a signal by which the presence of a flaw is indicated. The magnetic field may be induced from D.C. fed electromagnets or a low tension, high intensity generator may be connected to supply current to the article by means of clamps at its ends, and the article may be sprayed with a suspension in water or paraffin of a powdered mixture of an epoxy resin, tetra ethyl rhodamine and iron. The article is then passed through a head, Fig. 2, comprising a rotating cylindrical steel barrel 7 which houses a pair of photo-electric monitoring systems each comprising an ultra-violet lamp 15, a lens 18 for illuminating an area of the object, an optical filter 19 passing only ultra-violet a parabolic mirror 20, a filter 23 passing only light from the fluorescence, a lens 22 and a photo-cell 21. Power is supplied to the head by brushes and slip-rings and a flow signal may be transmitted by radio or by induction to effect control of a succeeding stage where a flow may be marked with paint or a flaw treating flame positioned. The signal receiving equipment at the succeeding stage may include circuitry for accepting signals only of a predetermined amplitude and duration and for delaying the effectiveness of the signal until the object is appropriately positioned.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR89256A FR1512541A (en) | 1966-12-29 | 1966-12-29 | Device for the automatic control of ferromagnetic products by magnetic particle testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1192218A true GB1192218A (en) | 1970-05-20 |
Family
ID=8623107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5583667A Expired GB1192218A (en) | 1966-12-29 | 1967-12-08 | A Device for the Automatic Inspection of Ferromagnetic Products by Magnetoscopy. |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE708665A (en) |
| DE (1) | DE1648541A1 (en) |
| FR (1) | FR1512541A (en) |
| GB (1) | GB1192218A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090190A1 (en) * | 1982-03-22 | 1983-10-05 | Mecapec S.A. | Method and apparatus for magnetically detecting flaws in materials |
-
1966
- 1966-12-29 FR FR89256A patent/FR1512541A/en not_active Expired
-
1967
- 1967-12-08 GB GB5583667A patent/GB1192218A/en not_active Expired
- 1967-12-21 DE DE19671648541 patent/DE1648541A1/en active Pending
- 1967-12-28 BE BE708665D patent/BE708665A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1648541A1 (en) | 1971-04-01 |
| BE708665A (en) | 1968-05-02 |
| FR1512541A (en) | 1968-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |