GB1354133A - Nondestructive testing device for steel parts - Google Patents
Nondestructive testing device for steel partsInfo
- Publication number
- GB1354133A GB1354133A GB4195871A GB4195871A GB1354133A GB 1354133 A GB1354133 A GB 1354133A GB 4195871 A GB4195871 A GB 4195871A GB 4195871 A GB4195871 A GB 4195871A GB 1354133 A GB1354133 A GB 1354133A
- Authority
- GB
- United Kingdom
- Prior art keywords
- billet
- tape
- test
- flaws
- weld
- 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
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)
- Peptides Or Proteins (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
1354133 Magnetic flaw testing F FORSTER 8 Sept 1971 [9 Sept 1970] 41958/71 Heading G1N Steel objects are tested for flaws by magnetizing with alternating flux between pole piece which have a thickness less than that of the objects, and detecting the stray flux which emerges from any surface cracks. In Fig. 3, a steel billet 1 is magnetized by two oppositely disposed A. C. electromagnets each comprising a ferromagnetic plate 11 and winding 12 energised at the mains frequency or an adjustable frequency. The plates 11 may be resiliently urged towards the billet, rollers being used to allow easy movement of the billet between the plates while maintaining a constant air gap. The windings 12 may be tuned by capacitors to a frequency near that of the A. C. so that if the air gap increases, the A. C. voltage increases to make the field strength substantially independent of variations in the air gap. Magnetic particles are sprayed on the billet from nozzles 22, 23, 24 and adhere to the sites of flaws but are blown off elsewhere. The magnetic particles may be fluorescent, U/V lamps 25 showing up the flaws to an operator who may mark them with chalk, or to scanning photo-cells automatically controlling colour spray guns. To test all four faces of a billet, it may be rotated through 90 degrees and reversed through the test chamber 21, this being repeated until all the faces have been tested. Alternatively, two test chambers may be provided, each chamber testing two opposite faces of the billet. The operator can over-ride the feeding. In Fig. 4, a weld is tested. The A. C. magnet comprises a ferromagnetic yoke 37 and winding 38. A crÛpe rubber roller 33 pressed a presaturated magnetic recording tape 31 to the weld, the tape passing from a supply spool 35 to a take up spool 36 as the apparatus is guided by hand along the weld. Permanently magnetized rollers (not shown) can be provided on each side of the roller 33 to hold the tape in close contact with the test piece. The tape 31 is read later.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702044535 DE2044535A1 (en) | 1970-09-09 | 1970-09-09 | Arrangement for non-destructive testing of steel parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1354133A true GB1354133A (en) | 1974-06-05 |
Family
ID=5781927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4195871A Expired GB1354133A (en) | 1970-09-09 | 1971-09-08 | Nondestructive testing device for steel parts |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS52709B1 (en) |
| CA (1) | CA939008A (en) |
| DE (1) | DE2044535A1 (en) |
| FR (1) | FR2103371A5 (en) |
| GB (1) | GB1354133A (en) |
| SE (1) | SE376655B (en) |
| SU (1) | SU421208A3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119518A (en) * | 1982-03-24 | 1983-11-16 | George Victor Crowe | Flaw detection method |
| CN103743811A (en) * | 2014-01-08 | 2014-04-23 | 上海射磁探伤机制造有限公司 | Fluorescent magnetic particle flaw detector for pipe end |
| CN110889830A (en) * | 2019-11-13 | 2020-03-17 | 河南科技大学 | Steel wire rope damage detection method and detection system based on three-dimensional magnetic flux leakage color imaging |
| CN116577408A (en) * | 2023-07-12 | 2023-08-11 | 江苏赛福探伤设备制造有限公司 | Magnetic powder inspection machine for bearing roller |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54142818U (en) * | 1978-03-28 | 1979-10-03 | ||
| AU531499B2 (en) * | 1978-09-08 | 1983-08-25 | Orb Electrical Steels Limited | An isotropic magnetising system |
| WO2019191252A1 (en) * | 2018-03-27 | 2019-10-03 | Illinois Tool Works Inc. | Magnetic inspection machines with true gauss magnetic measurements |
| CN110243923B (en) * | 2019-06-19 | 2023-06-20 | 中国石油大学(华东) | Visual imaging and evaluation method for corrosion defect based on alternating current electromagnetic field |
-
1970
- 1970-09-09 DE DE19702044535 patent/DE2044535A1/en active Pending
-
1971
- 1971-08-20 FR FR7130389A patent/FR2103371A5/fr not_active Expired
- 1971-09-02 SU SU1695731A patent/SU421208A3/ru active
- 1971-09-08 CA CA122344A patent/CA939008A/en not_active Expired
- 1971-09-08 GB GB4195871A patent/GB1354133A/en not_active Expired
- 1971-09-09 SE SE1143971A patent/SE376655B/xx unknown
- 1971-09-09 JP JP7003871A patent/JPS52709B1/ja active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119518A (en) * | 1982-03-24 | 1983-11-16 | George Victor Crowe | Flaw detection method |
| CN103743811A (en) * | 2014-01-08 | 2014-04-23 | 上海射磁探伤机制造有限公司 | Fluorescent magnetic particle flaw detector for pipe end |
| CN103743811B (en) * | 2014-01-08 | 2018-12-25 | 上海射磁探伤机制造有限公司 | A kind of fluorescent magnetic particle flaw detector for pipe end |
| CN110889830A (en) * | 2019-11-13 | 2020-03-17 | 河南科技大学 | Steel wire rope damage detection method and detection system based on three-dimensional magnetic flux leakage color imaging |
| CN110889830B (en) * | 2019-11-13 | 2023-03-24 | 河南科技大学 | Steel wire rope damage detection method and detection system based on three-dimensional magnetic flux leakage color imaging |
| CN116577408A (en) * | 2023-07-12 | 2023-08-11 | 江苏赛福探伤设备制造有限公司 | Magnetic powder inspection machine for bearing roller |
| CN116577408B (en) * | 2023-07-12 | 2023-10-03 | 江苏赛福探伤设备制造有限公司 | Magnetic powder inspection machine for bearing roller |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2103371A5 (en) | 1972-04-07 |
| SE376655B (en) | 1975-06-02 |
| DE2044535A1 (en) | 1972-05-10 |
| SU421208A3 (en) | 1974-03-25 |
| CA939008A (en) | 1973-12-25 |
| SU396886A3 (en) | 1973-08-29 |
| JPS52709B1 (en) | 1977-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5130652A (en) | AC magnetic flux leakage flaw detecting apparatus for detecting flaws in flat surfaces with rotating leakage detection element | |
| JPH01203965A (en) | Inspector for material to be inspected made of non-ferromagnetic metal | |
| US4303883A (en) | Apparatus for detecting the center of a welded seam in accordance with fundamental harmonic component suppression | |
| GB1354133A (en) | Nondestructive testing device for steel parts | |
| GB1475517A (en) | Detection of surface defects in elongate metallic members | |
| US3753085A (en) | Non-destructive testing apparatus for detecting both transverse and longitudinal weld defects with a single inspection | |
| US2061692A (en) | Testing apparatus | |
| US4058762A (en) | Method and apparatus for magnetic inspection through adjustable pulsed alternating and direct current magnetic fields | |
| US3763423A (en) | Magnetic particle flaw detector including shield means to protect previously tested surfaces | |
| US3249861A (en) | Method and apparatus for magnetic flaw detection by depositing magnetic particles ononly the area of the flaw | |
| JPS61213667A (en) | Magnetic flaw detecting device | |
| GB1169752A (en) | Magnetic Inspecting Apparatus | |
| USRE19611E (en) | Magnetic testing method and means | |
| US3029382A (en) | Electro-magnetic flaw finder | |
| JPH1030994A (en) | Magnetic flaw detecting method and apparatus therefor | |
| US2648435A (en) | Method and apparatus for magnetic testing | |
| US1960898A (en) | Magnetic testing method and means | |
| US4035721A (en) | System and method using magnetic tape for testing of small cylindrical parts | |
| US3784904A (en) | A.c.energized magnetic particle flaw detector with means to raise and lower electromagnets from path of workpiece | |
| JPH0592712U (en) | Magnetizing device for magnetic particle inspection of rolling rolls | |
| GB1076168A (en) | Improvements in or relating to hardness determination | |
| GB631313A (en) | Improvements in or relating to a method and apparatus for magnetically inspecting objects | |
| CN219553344U (en) | Demagnetizing device for storage tank bottom plate | |
| JP7367687B2 (en) | Method and apparatus for measuring magnetic properties, and method for manufacturing magnetic recording media | |
| JPS5935807Y2 (en) | Eddy current flaw detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |