IT1260275B - Device for detecting surface defects in a metal bar or wire in motion - Google Patents
Device for detecting surface defects in a metal bar or wire in motionInfo
- Publication number
- IT1260275B IT1260275B ITUD920043A ITUD920043A IT1260275B IT 1260275 B IT1260275 B IT 1260275B IT UD920043 A ITUD920043 A IT UD920043A IT UD920043 A ITUD920043 A IT UD920043A IT 1260275 B IT1260275 B IT 1260275B
- Authority
- IT
- Italy
- Prior art keywords
- coils
- bar
- movement
- motion
- wire
- Prior art date
Links
- 230000007547 defect Effects 0.000 title abstract 2
- 239000002184 metal Substances 0.000 title abstract 2
- 238000007689 inspection Methods 0.000 abstract 1
- 244000045947 parasite Species 0.000 abstract 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Device for detecting surface defects in a metal bar or wire in motion in which first coils 29 generate an alternating magnetic field that causes parasite surface currents in the bar 11 that, in the second coil 13, generate a secondary magnetic field, the said first 29 and second 13 coils being coaxial and at least the said second coil 13 consisting of a pair of coils 13a-13b, the said first 29 and second 13 coils defining a measuring group 12, having at least two measuring groups 12 with a longitudinal axis moving from an open position fig. 2a, in which the various longitudinal axes are coincident with the nominal axis of movement of the bar 11, to an inspection position fig. 2b, in which the said longitudinal axes are essentially parallel to the nominal axis of movement of the said bar 11 and are positioned essentially equidistant on a circumference whose centre is essentially coincident with the said axis of movement. <IMAGE>
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUD920043A IT1260275B (en) | 1992-03-20 | 1992-03-20 | Device for detecting surface defects in a metal bar or wire in motion |
DE69300271T DE69300271T2 (en) | 1992-03-20 | 1993-03-08 | Device for the detection of surface defects in moving metal bars or wire. |
EP93103702A EP0561251B1 (en) | 1992-03-20 | 1993-03-08 | Device to detect surface faults in a metallic bar or wire rod in movement |
ES93103702T ES2075733T3 (en) | 1992-03-20 | 1993-03-08 | DEVICE TO DETECT SURFACE DEFECTS IN A METAL BAR OR MOVING WIRE ROD. |
US08/029,589 US5412319A (en) | 1992-03-20 | 1993-03-11 | Device to detect disturbances in an electromagnetic field induced by surface faults in a metallic bar or wire rod in movement |
BR9301246A BR9301246A (en) | 1992-03-20 | 1993-03-19 | FAULT DETECTION DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUD920043A IT1260275B (en) | 1992-03-20 | 1992-03-20 | Device for detecting surface defects in a metal bar or wire in motion |
Publications (3)
Publication Number | Publication Date |
---|---|
ITUD920043A0 ITUD920043A0 (en) | 1992-03-20 |
ITUD920043A1 ITUD920043A1 (en) | 1993-09-21 |
IT1260275B true IT1260275B (en) | 1996-04-03 |
Family
ID=11421052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITUD920043A IT1260275B (en) | 1992-03-20 | 1992-03-20 | Device for detecting surface defects in a metal bar or wire in motion |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1260275B (en) |
-
1992
- 1992-03-20 IT ITUD920043A patent/IT1260275B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITUD920043A0 (en) | 1992-03-20 |
ITUD920043A1 (en) | 1993-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19960325 |