GB797335A - Liquid suspension of magnetic particles for inspection methods - Google Patents
Liquid suspension of magnetic particles for inspection methodsInfo
- Publication number
- GB797335A GB797335A GB34330/56A GB3433056A GB797335A GB 797335 A GB797335 A GB 797335A GB 34330/56 A GB34330/56 A GB 34330/56A GB 3433056 A GB3433056 A GB 3433056A GB 797335 A GB797335 A GB 797335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- nov
- added
- iron oxide
- magnetic particles
- 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)
- 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)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
797,335. Magnetic compositions. GENERAL ELECTRIC CO. Nov. 9, 1956 [Nov. 29, 1955], No. 34330/56. Class 38 (2). A magnetic fluid for testing ferrous parts for flaws comprises iron oxide particles, a rust inhibitor, a dispersing agent comprising an organic compound having a polyethylene glycol base dispersed in water. The rust inhibitor may be sodium nitrite. The iron oxide is added to the water as a paste containing a watersoluble dispersing agent such as castor oil. Also added to the water may be a non-ionic surface-active agent such as alkyl aryl polyether alcohol which acts as stabilizer to prevent the solution from breaking down, and an antifoam agent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US797335XA | 1955-11-29 | 1955-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB797335A true GB797335A (en) | 1958-07-02 |
Family
ID=22152450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34330/56A Expired GB797335A (en) | 1955-11-29 | 1956-11-09 | Liquid suspension of magnetic particles for inspection methods |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB797335A (en) |
Cited By (5)
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 |
US3951881A (en) * | 1973-05-16 | 1976-04-20 | Rockwell International Corporation | Method of magnetic particle testing using strippable coatings |
US4107063A (en) * | 1977-03-02 | 1978-08-15 | International Business Machines Corporation | Water based selectable charge magnetic inks |
US4361806A (en) * | 1980-07-07 | 1982-11-30 | Magnaflux Corporation | Method using aqueous emulsion having magnetizable particles for detecting flaws in magnetizable workpieces |
US4812249A (en) * | 1986-09-17 | 1989-03-14 | Circle Chemical Company, Inc. | Testing system |
-
1956
- 1956-11-09 GB GB34330/56A patent/GB797335A/en not_active Expired
Cited By (5)
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 |
US3951881A (en) * | 1973-05-16 | 1976-04-20 | Rockwell International Corporation | Method of magnetic particle testing using strippable coatings |
US4107063A (en) * | 1977-03-02 | 1978-08-15 | International Business Machines Corporation | Water based selectable charge magnetic inks |
US4361806A (en) * | 1980-07-07 | 1982-11-30 | Magnaflux Corporation | Method using aqueous emulsion having magnetizable particles for detecting flaws in magnetizable workpieces |
US4812249A (en) * | 1986-09-17 | 1989-03-14 | Circle Chemical Company, Inc. | Testing system |
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