FI62906B - Foerfarande och anordning foer magnetisk inspektion - Google Patents
Foerfarande och anordning foer magnetisk inspektion Download PDFInfo
- Publication number
- FI62906B FI62906B FI771785A FI771785A FI62906B FI 62906 B FI62906 B FI 62906B FI 771785 A FI771785 A FI 771785A FI 771785 A FI771785 A FI 771785A FI 62906 B FI62906 B FI 62906B
- Authority
- FI
- Finland
- Prior art keywords
- workpiece
- current
- magnetic
- magnetic field
- particles
- Prior art date
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
-
- 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
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)
- Measuring Magnetic Variables (AREA)
Claims (6)
1. Förfarande för feldetektering i ett magnetiserbart arbets-stycke (50), i vilket förfarande magnetiska partiklar sprids ut över arbetsstyckets (50) yta samt arbetsstycket utsätts för magnetiska fält och utgäende frän hur partiklarna lägger sig pä ytan slutsatser kan dras om förekomsten av fel, känne-t e c k n a t av,att arbetsstycket (50) utsätts för ett puls-format växelströms- och likströmsmagnetfält samt växelströms-och likströmsmagnetfältens pulseringshastighet och -verknings-tid regleras för att effektivera feldetekteringen.
2. Förfarande enligt patentkravet 1, kännetecknat av, att de pulsformade växelströms- och likströmsmagnetfälten riktas samtidigt mot arbetsstycket (50).
3. Förfarande enligt patentkravet 1, kännetecknat av, att de pulsformade växelströms- och likströmsmagnetfälten riktas turvis mot arbetsstycket (50).
4. Anordning för feldetektering i ett magnetiserbart arbets-stycke (50), i vilken anordning ingär ett magnetiserbart ok, vilket placeras mot arbetsstycket (50), en runt oket lindad magnetiseringsspole (12) samt till spolen kopplat organ för strömmatning, kännetecknad av, att strömmatnings-organet omfattar bäde en växelströmskälla och en likströms-
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/693,021 US4058762A (en) | 1976-06-04 | 1976-06-04 | Method and apparatus for magnetic inspection through adjustable pulsed alternating and direct current magnetic fields |
| US69302176 | 1976-06-04 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI771785A FI771785A (sv) | 1977-12-05 |
| FI62906B true FI62906B (fi) | 1982-11-30 |
| FI62906C FI62906C (fi) | 1983-03-10 |
Family
ID=24782990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI771785A FI62906C (fi) | 1976-06-04 | 1977-06-03 | Foerfarande och anordning foer magnetisk inspektion |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4058762A (sv) |
| JP (1) | JPS5316685A (sv) |
| AU (1) | AU512325B2 (sv) |
| BE (1) | BE855396A (sv) |
| CA (1) | CA1096941A (sv) |
| DE (1) | DE2725306B2 (sv) |
| DK (1) | DK247377A (sv) |
| FI (1) | FI62906C (sv) |
| FR (1) | FR2353851A1 (sv) |
| GB (1) | GB1584671A (sv) |
| IN (1) | IN148533B (sv) |
| IT (1) | IT1077222B (sv) |
| NL (1) | NL7706147A (sv) |
| NO (1) | NO771923L (sv) |
| SE (1) | SE7706471L (sv) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1499209A1 (ru) * | 1986-07-02 | 1989-08-07 | Белорусский Политехнический Институт | Намагничивающее устройство дл магнитографического контрол изделий |
| DE4034751A1 (de) * | 1990-10-30 | 1991-05-23 | Michael Schulz | Verfahren und vorrichtung zur magnetischen risspruefung von nur einseitig zugaenglichen bohrungslaibungen in behaeltnissen der dampf- und druckerzeugungstechnik |
| US6316845B1 (en) | 1999-11-05 | 2001-11-13 | Parker Research Corporation | Battery powered AC electromagnetic yoke for magnetic particle inspection |
| US20080258719A1 (en) * | 2007-04-18 | 2008-10-23 | The University Of Houston | Apparatus and methods for ferromagnetic wall inspection of tubulars |
| DE102007024060A1 (de) * | 2007-05-22 | 2008-11-27 | Illinois Tool Works Inc., Glenview | Vorrichtung und Verfahren zur Prüfmittel-Kontrolle |
| DE102007024058A1 (de) * | 2007-05-22 | 2008-11-27 | Illinois Tool Works Inc., Glenview | Vorrichtung und Verfahren zur Prüfmittel-Kontrolle |
| DE102008048592B4 (de) * | 2008-09-23 | 2010-08-26 | Mr-Chemie Gmbh | Verstellbarer Handmagnet |
| UA117542C2 (uk) | 2017-06-16 | 2018-08-10 | Олександр Григорович Калениченко | Система для визначення структури електромагнітного поля і матеріалу об'єкта і спосіб визначення структури електромагнітного поля і матеріалу об'єкта |
| US11402351B1 (en) | 2019-08-20 | 2022-08-02 | Scan Systems Corp. | Apparatus, systems, and methods for discriminate high-speed inspection of tubulars |
| US11402352B1 (en) | 2019-08-20 | 2022-08-02 | Scan Systems Corp. | Apparatus, systems, and methods for inspecting tubulars employing flexible inspection shoes |
| US11307173B1 (en) | 2019-08-20 | 2022-04-19 | Scan Systems Corp. | Apparatus, systems, and methods for inspection of tubular goods |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA447838A (en) * | 1948-04-13 | Magnaflux Corporation | Method of and apparatus for magnetic testing | |
| US1782462A (en) * | 1925-07-06 | 1930-11-25 | Firm Neufeldt & Kuhnke Betr Sg | Arrangement for testing magnetizable objects |
| US1910770A (en) * | 1928-02-27 | 1933-05-23 | Kinsley Carl | Magnetic testing of masses |
| US3378762A (en) * | 1967-07-05 | 1968-04-16 | Phillip J. Parker | Magnetic particle inspection probe with adjustable probe legs and self-contained circuitry for a.c. or d.c. testing |
-
1976
- 1976-06-04 US US05/693,021 patent/US4058762A/en not_active Expired - Lifetime
-
1977
- 1977-06-01 IN IN825/CAL/77A patent/IN148533B/en unknown
- 1977-06-01 JP JP6339077A patent/JPS5316685A/ja active Pending
- 1977-06-01 NO NO771923A patent/NO771923L/no unknown
- 1977-06-02 SE SE7706471A patent/SE7706471L/sv not_active Application Discontinuation
- 1977-06-02 CA CA279,740A patent/CA1096941A/en not_active Expired
- 1977-06-02 GB GB23393/77A patent/GB1584671A/en not_active Expired
- 1977-06-03 FI FI771785A patent/FI62906C/fi not_active IP Right Cessation
- 1977-06-03 BE BE178202A patent/BE855396A/xx unknown
- 1977-06-03 AU AU25817/77A patent/AU512325B2/en not_active Expired
- 1977-06-03 FR FR7716980A patent/FR2353851A1/fr active Granted
- 1977-06-03 DK DK247377A patent/DK247377A/da unknown
- 1977-06-03 NL NL7706147A patent/NL7706147A/xx not_active Application Discontinuation
- 1977-06-03 IT IT24366/77A patent/IT1077222B/it active
- 1977-06-04 DE DE2725306A patent/DE2725306B2/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| NO771923L (no) | 1977-12-06 |
| AU512325B2 (en) | 1980-10-02 |
| NL7706147A (nl) | 1977-12-06 |
| FI62906C (fi) | 1983-03-10 |
| AU2581777A (en) | 1978-12-07 |
| DE2725306B2 (de) | 1979-06-28 |
| FR2353851A1 (fr) | 1977-12-30 |
| US4058762A (en) | 1977-11-15 |
| IN148533B (sv) | 1981-03-28 |
| CA1096941A (en) | 1981-03-03 |
| FI771785A (sv) | 1977-12-05 |
| GB1584671A (en) | 1981-02-18 |
| IT1077222B (it) | 1985-05-04 |
| DE2725306A1 (de) | 1977-12-08 |
| FR2353851B1 (sv) | 1981-12-18 |
| JPS5316685A (en) | 1978-02-15 |
| SE7706471L (sv) | 1977-12-05 |
| BE855396A (fr) | 1977-12-05 |
| DK247377A (da) | 1977-12-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: THE BABCOCK & WILCOX COMPANY |