CN1908648A - Online detecting device and method for two-field leakage magnetic flux of defects on steel products surface - Google Patents
Online detecting device and method for two-field leakage magnetic flux of defects on steel products surface Download PDFInfo
- Publication number
- CN1908648A CN1908648A CN 200510028559 CN200510028559A CN1908648A CN 1908648 A CN1908648 A CN 1908648A CN 200510028559 CN200510028559 CN 200510028559 CN 200510028559 A CN200510028559 A CN 200510028559A CN 1908648 A CN1908648 A CN 1908648A
- Authority
- CN
- China
- Prior art keywords
- detection head
- steel
- steel billet
- sensor
- billet
- 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.)
- Granted
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The related dual-field leakage flux on-line detector for steel product comprises: a stable frame connected with a servo supporting frame by a connection shaft, a driver on the servo frame, a detection head between slide slots of servo frame, a gear rod to connect the driver and detection head, a magnetizer in water tank, and an active sensor. The detection method comprises: dropping the detection head to approach the steel surface and raising to a set height to generate memory magnetic field; recalling the detection condition data; detecting the ring magnetic field, generating alternative EM field by the sensor; generating distortion signal once detecting crack; processing the output signal to display and alarm and spray mark respectively.
Description
Technical field
The present invention relates to a kind of the cannot-harm-detection device and detection method of steel part cosmetic bug, relate in particular to a kind of on-line measuring device and detection method of two field leakage fluxs of quantity-produced steel part cosmetic bug.
Background technology
The rough surface steel part is the high temperature continuous casting billet, because workpiece high temperature, and rough surface, at present, the cannot-harm-detection device of the multiple steel part cosmetic bug of prior art and detection method all can not effectively detect quantity-produced steel part cosmetic bug under the condition of high temperature and degree of depth crackle.The cannot-harm-detection device of the multiple steel part cosmetic bug of prior art and detection method have following several:
See also shown in Figure 1, a kind of prior art adopts the detection method of automatic camera pick-up unit 10 and visual inspection, a plurality of detection heads that are made of camera 11 are set above steel billet A continuous casting line, and the signal output part of detection head is connected with the display terminal 12 of OPS by lead.Below steel billet was transferred to a plurality of detection heads automatically, reviewer's unlocking electronic detection system of OPS got final product the billet surface situation that visual inspection is taken in by detection head from display screen.
This checkout equipment, detection head and high temperature billet steel distance are far away, are convenient to thermal protection; Detection method is fairly simple, the testing staff only need open electron detection device system in the OPS, the checker carries out visual inspection in the shooting that operation room is observed steel billet on the display screen, on finding steel billet during defectiveness, the control mark system sprays mark from the trend fault location, when the steel strand flowed into next procedure, the operative employee just carried out flame cleaning with flame and defective is burnt or defective position is cut away spraying the mark place.
But, there are following shortcoming in this checkout equipment and detection method: this detection method is to the area sensitivity, insensitive to the degree of depth, can only detect the bigger crackle of opening, opening all can't detect less than crackle and the iron scale crackle that block or that do not have opening of 0.5mm.Though this detection system also has on the production line abroad, and is all on the verge of being replaced.
See also shown in Figure 2, another kind of eddy current testing device 20 and detection method, in the both sides adjacent with steel billet A, two eddy current probes 21 are set respectively, this eddy current probe 21 is provided with electromagnetic sensor 22 respectively with sideway stance above adjacent steel billet, the signal output part of this electromagnetic sensor 22 is connected with the message handler 23 of OPS by lead.
This detection method is based on " faraday " electromagnetic induction principle, it is the alternating electromagnetic field that produces by inductive coil at the metal material surface eddy current of inducting, the inductive coil impedance changes when running into defectives such as crackle on the eddy current path, thus the existence of display defect.
This pick-up unit can detect the top layer crackle of high temperature cast steel base automatically, and automaticity is higher, and detection method is easy.
The shortcoming of this pick-up unit is:
1. the inductive coil of this device and surface of the work gap can not be too big, and gap one is big, and induced signal just reduces or do not had, so sensitivity is low, can only detect defectives such as billet surface crackle.
2. what the inductive coil of this device passed through is high-frequency current, and alternating electromagnetic field also is a high frequency, because faradic skin effect, therefore, the length of penetration of eddy current is limited, and coverage is the millimeter level, is mainly used in the surface opening crackle.
This detection method: because high temperature billet steel is detected, the checker can't be close, all configurations are all preset, make the probe drive operation as long as press a button, detection probe is parked in surface of the work automatically and detects, and this detection method just is difficult to detect to the crackle of high temperature billet steel surface below 1 millimeter.
See also shown in Figure 3, also have a kind of conventional leakage magnetic detection device 30 and detection method, one pick-up unit 30 is set above the B of adjacent detected device, and this pick-up unit 30 is made of magnet 31, the coil 32 on the magnet 31 and the electromagnetic sensor 33 that is arranged on coil 32 belows; Coil 32 two ends are connected with direct supply, and electromagnetic sensor 33 signal output parts are connected with external message handler 34.
At present flux-leakage detection method has two kinds, and a kind of is that the steel pipe that is used for of dc magnetization detects, and another kind is the detection that is used for casting skin rod iron surface crack of ac magnetization.What conventional flux-leakage detection method detecting sensor was used is passive device, directly accepts magnetic field intensity or scans fast with coil by magnetic-sensitive elements, produces induction electromotive force, and therefore, induction sensitivity is very low.Because the leakage flux of leakage magnetic detection device is very weak, the detection method when using this pick-up unit is that pick-up unit must be pressed on the workpiece and scan.Therefore, can't detect use, still not have this precedent at high temperature continuous casting steel billet detection range at present for rough surface workpiece such as high temperature continuous casting steel billets.
Summary of the invention
The object of the present invention is to provide a kind of on-line measuring device and detection method of two field leakage fluxs of steel part cosmetic bug, pick-up unit can produce the magnetic memory effect, keep stronger magnetization effect, effectively improved detection sensitivity, the detection method that is used for this pick-up unit can effectively detect the degree of depth crack defect of steel billet, thereby can guarantee product quality.
Technical scheme of the present invention is to realize like this.A kind of on-line measuring device of two field leakage fluxs of steel part cosmetic bug is characterized in, comprising: stablize frame, servo support, coupling shaft, driver, detection head and drive link;
Be made as cavity in the described stable frame, web joint be set stablizing upper rack; This web joint bottom is provided with axis hole;
Described servo support is arranged in the cavity of stablizing frame, and both sides are provided with chute in servo support, is provided with axis hole on servo support top;
Described coupling shaft passes through axis hole in the web joint of stablizing frame and the axis hole in the servo support, will stablize frame and be connected with servo support;
Described driver is arranged on the top of servo support;
Described detection head is located between the both sides chute of servo support, and this detection head is made up of casing, magnetizing apparatus and sensor; Be provided with cavity in the middle of the described casing; Described magnetizing apparatus is arranged between two water tank walls, and described sensor is arranged between two yokes; Sensor is connected by the signal conditioning package of lead with the outside;
The two ends of described drive link are connected with detection head with driver respectively.
The on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug, wherein, described magnetizing apparatus is made as yoke, and this yoke is made of magnet and the ingot iron that is arranged on end.
The on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug, wherein, described sensor is arranged between the two poles of the earth of yoke; Sensor by housing, be provided with in the housing a pair of iron core and respectively the coil on a pair of iron core constitute; The coil two ends are connected with AC power in the signal conditioning package respectively.
The on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug wherein, describedly also comprises four setting nuts, and these four setting nuts are arranged on four jiaos of the bottoms of servo support.
The on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug, wherein, the described four rolling that also comprises, this four rolling are arranged on four jiaos of the bottoms of center rest.
The on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug wherein, also comprises water inlet pipe and rising pipe; One end of described water inlet pipe and rising pipe is connected with water delivering orifice with the water inlet of both sides, casing top respectively, and the other end of water inlet pipe and rising pipe is connected with the circulating water device of outside.
Be used for the detection method of on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug, wherein, detection method may further comprise the steps:
Step 1, the control detection head drops near billet surface;
Step 2 drives the position that detection head rises to setting, produces memory magnetic field;
Step 3 accesses the testing conditions data of storage;
Step 4, detection head detect steel billet, are arranged between yoke in the detection head and the steel billet and form closed magnetic circuit, produce the toroidal magnetic field;
Step 5, detection head detects steel billet, and the active sensor that is arranged between detection head inner yoke the two poles of the earth produces alternating electromagnetic field;
Step 6, detection head detects the steel billet that moves on streamline, when billet surface does not have surface imperfection, does not have leakage flux to form, and sensor does not have signal to be received; Occur when steel billet has crack defect, the toroidal magnetic field is damaged, and produces leakage flux, and leakage flux is disturbed alternating electromagnetic field, and the coil impedance of active sensor is changed, and produces the variable signal of reflection steel billet defective.
Step 7, the variable signal of detection head output crackle of steel billet defective is to signal conditioning package.
After step 8, signal conditioning package are handled variable signal, show the oscillogram of crackle of steel billet defective from display screen, send alerting signal simultaneously, also send spray mark signal, nameplate spraying device is sprayed mark to crack defect on the steel billet, is handled by following road flame cleaning technology.
The online test method of two field leakage fluxs of above-mentioned steel part cosmetic bug, wherein, described step 1 is to step 2, and detection head rises to the position of detection head and tested steel billet distance 8 to 10mm from the position near billet surface, produces memory magnetic field between detection head and the steel billet.
The online test method of two field leakage fluxs of above-mentioned steel part cosmetic bug, wherein, the online test method of two field leakage fluxs of steel part cosmetic bug according to claim 7 is characterized in that: to drop to the distance near billet surface be 1 to 2mm to detection head in the described step 1.
The present invention makes it compared with prior art owing to adopted the on-line measuring device and the detection method technical scheme of two field leakage fluxs of above-mentioned steel part cosmetic bug, has following advantage and good effect:
1. owing to be provided with magnetizing assembly, when detection head and tested steel billet joined, generation closed loop magnetic circuit between magnetizing assembly and the tested steel billet can make magnetic field length of penetration inside steel billet big, is convenient to detect degree of depth crackle in the pick-up unit of the present invention.
2. in the pick-up unit of the present invention owing to be provided with active electromagnetic sensor, produce ac magnetic field after being arranged on the coil electricity in the active electromagnetic sensor, when this ac magnetic field runs into the crackle of steel billet defective and causes leakage flux, this ac magnetic field generation distortion, the field of this distortion is the steel billet flaw indication, thereby can detect the defective of steel billet reliably, effectively improve the quality of products.
3. when the detection head of pick-up unit of the present invention detects, can keep bigger gap between detection head and the workpiece, solved still unsolved technical barrier both at home and abroad, thereby the water-cooling system of detection head is convenient to processing and installation, and can avoids the accident of detection head and workpiece collision.
4. the housing of pick-up unit of the present invention is owing to be made as water tank, and passed through recirculated water in water tank, and the sensor that is arranged in the water tank is remained on the following environment temperature of 20 degree, can guarantee the sensor reliably working.
5. owing to be provided with driver, can drive detection head and move up and down in the pick-up unit of the present invention, produce memory magnetic field and scalable and detect spacing by the drive link that is connected.
6. the detection head bottom of pick-up unit of the present invention is owing to be provided with setting nut, the distance between fine-tuning detection head and the detected steel billet.
The inventive method since in step 1 to step 2, detection head rises to the position of detection head and tested steel billet distance 8 to 10mm from the position near billet surface, make and produce memory magnetic field between detection head and the steel billet, can farthest keep stronger magnetization effect, improve detection sensitivity greatly; Can keep bigger gap between detection head 45 and the workpiece simultaneously, be convenient to install, touch tested steel billet in the time of can avoiding detecting, solve still unsolved technical barrier both at home and abroad.
8. in detection method of the present invention, when detection head is inswept above steel billet, just there is leakage flux to form at the steel billet surface defect place, the alternating electromagnetic field that this leakage flux is set up sensor forms and disturbs, produce reflection steel billet defective variable signal, thereby can detect the degree of depth crack defect of steel billet effectively.
Description of drawings
On-line measuring device by following two field leakage fluxs to steel part cosmetic bug of the present invention and detection method one embodiment can further understand purpose of the present invention, specific structural features and advantage in conjunction with the description of its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the structure synoptic diagram of prior art automatic camera pick-up unit knot.
Fig. 2 is the structural representation of prior art steel strand eddy current testing device.
Fig. 3 is the structural representation of prior art leakage magnetic detection device.
Fig. 4 is the on-line measuring device rig-site utilization synoptic diagram of two field leakage fluxs of steel part cosmetic bug of the present invention.
Fig. 5 is the on-line measuring device structural representation of two field leakage fluxs of steel part cosmetic bug of the present invention.
Fig. 6 is the sensor construction synoptic diagram of on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention.
Fig. 7 is that the on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention is used for producing between detection method yoke and the detected defective steel billet the logical synoptic diagram of magnetic leakage.
Fig. 8 is that the detection head of on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention moves down view.
Fig. 9 is that the detection head of on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention upwards promotes view.
Figure 10 is the oscillogram that the on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention is used for producing between detection method yoke and the detected defective steel billet memory magnetic field.
Figure 11 is the synoptic diagram that the on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention is used for producing between detection method yoke and sensor and the detected defective steel billet variable signal.
Figure 12 is that the on-line measuring device of two field leakage fluxs of steel part cosmetic bug of the present invention is used for detection method to being detected defective steel billet variable signal oscillogram.
Embodiment
See also Fig. 4, shown in Figure 5, the on-line measuring device 40 of two field leakage fluxs of steel part cosmetic bug of the present invention comprises: stablize frame 41, servo support 42, coupling shaft 43, driver 44, detection head 45 and drive link 46.
Stablize in the frame 41 and be made as cavity, web joint 411 is set stablizing frame 41 tops; These web joint 411 usefulness bolts 412 are connected with stable frame 41, and these web joint 411 bottoms are provided with axis hole, and four rolling 413 is arranged on four jiaos of the bottoms of center rest 41.
Please cooperate referring to Fig. 6, sensor 453 is arranged in the cavity of water tank, between the two poles of the earth of yoke 452; Sensor 453 by housing 453a, be provided with in the housing 453a a pair of iron core 453b and respectively the coil 453c on a pair of iron core 453b constitute; Coil 453c two ends are connected with AC power 51 in the signal conditioning package 50 respectively.The two ends of drive link 46 are connected with detection head 45 with driver 44 respectively.
One end of water inlet pipe 454 and rising pipe 455 is connected with water delivering orifice with the water inlet of both sides, casing 451 top respectively, and the other end of water inlet pipe 454 and rising pipe 455 is connected with the circulating water device of outside.
The principle of work of the pick-up unit of two field leakage fluxs of steel part cosmetic bug is, when the detection head that is made of magnetizing assembly and sensor places from the online continuous casting steel billet of high temperature surface 10 millimeter distances, when the online continuous casting steel billet of high temperature passes through with speed of production, when the online continuous casting steel billet of high temperature surface does not have surface imperfection, the online continuous casting steel billet of high temperature surface does not have leakage flux to occur, distortion does not take place in the electromagnetic field that sensor is set up, and the sensor of gathering flaw indication does not have signal output; When there is surface imperfection on the online continuous casting steel billet of high temperature surface, there is leakage flux to occur at the online continuous casting billet surface imperfection of high temperature place, the disturbed generation distortion of alternating electromagnetic field that sensor is set up, promptly produce reflection steel billet defective variable signal, again with this variable signal to outside signal conditioning package; After signal conditioning package is handled variable signal,, send alerting signal simultaneously, also send spray mark signal, handle by following road technology from the oscillogram of display screen demonstration crackle of steel billet defective.
Be used for the detection method of on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug, it is characterized in that: detection method may further comprise the steps:
Step 1, the control detection head drops near billet surface; In step 1, start driver, driving detection head, to drop to distance near billet surface be 1 to 2mm, please cooperate referring to Fig. 7, Fig. 8, when detection head descended, the magnetic field H C1 that goes in ring was more weak, at billet surface crackle is arranged, and promptly produces leakage flux LCT.
Step 2, the driver drives detection head rises to the position of setting; In step 2, detection head rises to the position of detection head and tested steel billet distance 8 to 10mm from the position near billet surface, please cooperate referring to Fig. 9, Figure 10, and when detection head rose, the magnetic field H C2 that goes in ring was more intense; Make and produce memory magnetic field H C2 between detection head and the steel billet and effectively improved detection sensitivity; Produce stronger closed loop magnetic circuit between magnetizing assembly and the tested steel billet, can make magnetic field big, be convenient to detect degree of depth crackle in steel billet the inside length of penetration.
Step 3 accesses the testing conditions data of storage; Access the testing conditions data of storage by the signal conditioning package of pick-up unit outside.
When step 4, detection head detect steel billet, be arranged between yoke in the detection head and the steel billet and form closed magnetic circuit, produce the toroidal magnetic field; When the toroidal magnetic field placed ferromagnetic steel billet top, propagated along billet surface this toroidal magnetic field.
Step 5 when detection head detects steel billet, is arranged on the generation of the active sensor between yoke the two poles of the earth alternating electromagnetic field in the detection head.
When step 6, detection head detect the steel billet that moves on streamline, when the billet surface of rough surface does not have surface imperfection, do not have leakage flux to form, sensor does not have signal to be received; Please cooperate referring to Figure 11, the appearance of crack defect is arranged when steel billet, the toroidal magnetic field HC2 that forms between yoke and the steel billet is damaged, the steel billet surface defect place of rough surface just has leakage flux LCT to form, the alternating electromagnetic field JBC that this leakage flux LCT sets up sensor forms and disturbs, the coil impedance of active sensor is changed, and sensor promptly produces the variable signal of reflection steel billet defective.
Step 7, the variable signal of detection head output crackle of steel billet defective is to outside signal conditioning package.
Step 8, signal conditioning package please cooperate referring to Figure 12 after variable signal is handled, from the oscillogram of display screen demonstration crackle of steel billet defective, send alerting signal simultaneously, also send spray mark signal, nameplate spraying device is sprayed mark to crack defect on the steel billet, is handled by following road flame cleaning technology.
In sum, pick-up unit structural design novelty of the present invention, science owing to be provided with magnetizing assembly, just produce stronger leakage flux at the steel billet surface defect place, can carry out highly sensitive leakage flux to the surface imperfection on the steel billet and detect; Owing to be provided with active electromagnetic sensor, can set up stable electromagnetic field.In detection method of the present invention, when detection head is inswept above steel billet, just produce stronger leakage flux at the steel billet surface defect place; The alternating electromagnetic field that this leakage flux is set up sensor forms and disturbs, the coil impedance of active sensor is changed, active sensor promptly produce reflection steel billet defective variable signal, handle by signal conditioning package, can highly sensitive reliable detection go out to have the steel billet of degree of depth crack defect, thereby guarantee product quality.
Claims (9)
1. the on-line measuring device of two field leakage fluxs of a steel part cosmetic bug is characterized in that: comprising: stablize frame, servo support, coupling shaft, driver, detection head and drive link;
Be made as cavity in the described stable frame, web joint be set stablizing upper rack; This web joint bottom is provided with axis hole;
Described servo support is arranged in the cavity of stablizing frame, and both sides are provided with chute in servo support, is provided with axis hole on servo support top;
Described coupling shaft passes through axis hole in the web joint of stablizing frame and the axis hole in the servo support, will stablize frame and be connected with servo support;
Described driver is arranged on the top of servo support;
Described detection head is located between the both sides chute of servo support, and this detection head is made up of casing, magnetizing apparatus and sensor; Be provided with cavity in the middle of the described water tank wall; Described magnetizing apparatus is arranged on the sensor described in the water tank and is arranged in the middle of two magnetic poles; Sensor is connected by the signal conditioning package of lead with the outside;
The two ends of described drive link are connected with detection head with driver respectively.
2. the on-line measuring device of two field leakage fluxs of steel part cosmetic bug according to claim 1 is characterized in that: described magnetizing apparatus is made as yoke, and this yoke is made of magnet and the ingot iron that is arranged on end.
3. the on-line measuring device of two field leakage fluxs of steel part cosmetic bug according to claim 1 is characterized in that: described sensor is arranged between the two poles of the earth of yoke; Sensor by housing, be provided with in the housing a pair of iron core and respectively the coil on a pair of iron core constitute; The coil two ends are connected with AC power in the signal conditioning package respectively.
4. the on-line measuring device of two field leakage fluxs of steel part cosmetic bug according to claim 1 is characterized in that: describedly also comprise four setting nuts, these four setting nuts are arranged on four jiaos of the bottoms of servo support.
5. the on-line measuring device of two field leakage fluxs of steel part cosmetic bug according to claim 1 is characterized in that: the described four rolling that also comprises, this four rolling are arranged on four jiaos of the bottoms of center rest.
6. the on-line measuring device of two field leakage fluxs of steel part cosmetic bug according to claim 1 is characterized in that: also comprise water inlet pipe and rising pipe; One end of described water inlet pipe and rising pipe is connected with water delivering orifice with the water inlet of both sides, casing top respectively, and the other end of water inlet pipe and rising pipe is connected with the circulating water device of outside.
7. be used for the detection method of on-line measuring device of two field leakage fluxs of above-mentioned steel part cosmetic bug, it is characterized in that: detection method may further comprise the steps:
Step 1, the control detection head drops near billet surface;
Step 2 drives the position that detection head rises to setting, produces memory magnetic field;
Step 3 accesses the testing conditions data of storage;
Step 4, detection head detect steel billet, are arranged between yoke in the detection head and the steel billet and form closed magnetic circuit, produce the toroidal magnetic field;
Step 5, detection head detects steel billet, and the active sensor that is arranged between detection head inner yoke the two poles of the earth produces alternating electromagnetic field;
Step 6, detection head detects the steel billet that moves on streamline, when billet surface does not have surface imperfection, does not have leakage flux to form, and sensor does not have signal to be received; Occur when steel billet has crack defect, the toroidal magnetic field is damaged, and produces leakage flux, and leakage flux is disturbed alternating electromagnetic field, and the coil impedance of active sensor is changed, and produces the variable signal of reflection steel billet defective.
Step 7, the variable signal of detection head output crackle of steel billet defective is to signal conditioning package.
After step 8, signal conditioning package are handled variable signal, show the oscillogram of crackle of steel billet defective from display screen, send alerting signal simultaneously, also send spray mark signal, nameplate spraying device is sprayed mark to crack defect on the steel billet, is handled by following road flame cleaning technology.
8. the online test method of two field leakage fluxs of steel part cosmetic bug according to claim 7, it is characterized in that: described step 1 is to step 2, detection head rises to the position of detection head and tested steel billet distance 8 to 10mm from the position near billet surface, produce memory magnetic field between detection head and the steel billet.
9. the online test method of two field leakage fluxs of steel part cosmetic bug according to claim 7, it is characterized in that: the online test method of two field leakage fluxs of steel part cosmetic bug according to claim 7 is characterized in that: to drop to the distance near billet surface be 1 to 2mm to detection head in the described step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100285596A CN100432665C (en) | 2005-08-05 | 2005-08-05 | Online detecting device and method for two-field leakage magnetic flux of defects on steel products surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100285596A CN100432665C (en) | 2005-08-05 | 2005-08-05 | Online detecting device and method for two-field leakage magnetic flux of defects on steel products surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1908648A true CN1908648A (en) | 2007-02-07 |
| CN100432665C CN100432665C (en) | 2008-11-12 |
Family
ID=37699819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100285596A Expired - Fee Related CN100432665C (en) | 2005-08-05 | 2005-08-05 | Online detecting device and method for two-field leakage magnetic flux of defects on steel products surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432665C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359969A (en) * | 2014-11-07 | 2015-02-18 | 西红柿科技（武汉）有限公司 | Top magnetic flux leakage testing head |
| CN104777216A (en) * | 2015-04-29 | 2015-07-15 | 华中科技大学 | Magnetic yoke type local micromagnetization detection device suitable for point type defects |
| CN104792859A (en) * | 2015-04-29 | 2015-07-22 | 华中科技大学 | Magnetic yoke type local micro-magnetization detection device applicable to linear defects |
| CN104880375A (en) * | 2015-05-11 | 2015-09-02 | 广东正德材料表面科技有限公司 | Coating wear control device and application instrument of coating wear control device |
| CN105527339A (en) * | 2016-03-01 | 2016-04-27 | 江南大学 | Nondestructive detection method based on combined U-shaped pulse electromagnetic sensor |
| CN104330462B (en) * | 2014-11-07 | 2017-05-31 | 西红柿科技（武汉）有限公司 | A kind of double Energizing units for Magnetic Flux Leakage Inspecting |
| CN107850570A (en) * | 2015-07-16 | 2018-03-27 | 住友化学株式会社 | Defect testing method, defect testing device and inspection probe |
| CN108828474A (en) * | 2018-06-21 | 2018-11-16 | 苏州佳祺仕软件技术有限公司 | A kind of multistation apparatus for measuring magnetic flux |
| CN109946371A (en) * | 2019-04-04 | 2019-06-28 | 中国特种设备检测研究院 | A kind of metal defect detection sensor |
| CN114252504A (en) * | 2021-12-20 | 2022-03-29 | 马鞍山钢铁股份有限公司 | Online rapid detection method and detection device for corner cracks of continuous casting slab |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69123797T2 (en) * | 1990-02-22 | 1997-07-03 | Nippon Kokan Kk | MAGNETIC DEFECT DETECTOR FOR THIN STEEL TAPES |
| JPH05312786A (en) * | 1992-05-11 | 1993-11-22 | Kawasaki Steel Corp | Magnetic flaw-detecting device |
| US6057684A (en) * | 1995-10-31 | 2000-05-02 | Yoshihiro Murakami | Magnetic flaw detection apparatus using an E-shaped magnetic sensor and high-pass filter |
| CN2425362Y (en) * | 2000-04-07 | 2001-03-28 | 徐章遂 | Flaw magnetic-leakage detector |
| KR100487737B1 (en) * | 2000-07-12 | 2005-05-03 | 제이에프이 스틸 가부시키가이샤 | Leakage flux flaw detecting method and method for manufacturing hot rolled steel sheet using the same |
| JP3811039B2 (en) * | 2000-10-18 | 2006-08-16 | Ｊｆｅスチール株式会社 | Magnetic leak detection sensor for magnetic flaw detector |
| JP2003240761A (en) * | 2002-02-15 | 2003-08-27 | Jfe Steel Kk | Method and apparatus for detecting surface layer defect or surface defect in magnetic metal specimen |
| JP3971952B2 (en) * | 2002-05-07 | 2007-09-05 | 新日本製鐵株式会社 | Steel surface flaw detector |
| JP4175181B2 (en) * | 2003-05-30 | 2008-11-05 | Ｊｆｅスチール株式会社 | Magnetic flux leakage flaw detector |
| JP2005024295A (en) * | 2003-06-30 | 2005-01-27 | Jfe Steel Kk | Leakage flux flaw detection test |
-
2005
- 2005-08-05 CN CNB2005100285596A patent/CN100432665C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359969A (en) * | 2014-11-07 | 2015-02-18 | 西红柿科技（武汉）有限公司 | Top magnetic flux leakage testing head |
| CN104359969B (en) * | 2014-11-07 | 2017-03-08 | 西红柿科技（武汉）有限公司 | Magnetic Flux Leakage Inspecting head is pushed up in a kind of pole |
| CN104330462B (en) * | 2014-11-07 | 2017-05-31 | 西红柿科技（武汉）有限公司 | A kind of double Energizing units for Magnetic Flux Leakage Inspecting |
| CN104792859B (en) * | 2015-04-29 | 2017-06-16 | 华中科技大学 | A kind of local micro- magnetization detection means of yoke formula suitable for line style defect |
| CN104777216A (en) * | 2015-04-29 | 2015-07-15 | 华中科技大学 | Magnetic yoke type local micromagnetization detection device suitable for point type defects |
| CN104792859A (en) * | 2015-04-29 | 2015-07-22 | 华中科技大学 | Magnetic yoke type local micro-magnetization detection device applicable to linear defects |
| CN104777216B (en) * | 2015-04-29 | 2017-06-27 | 华中科技大学 | A kind of local micro- magnetization detection means of yoke formula suitable for point-type defect |
| CN104880375A (en) * | 2015-05-11 | 2015-09-02 | 广东正德材料表面科技有限公司 | Coating wear control device and application instrument of coating wear control device |
| CN107850570A (en) * | 2015-07-16 | 2018-03-27 | 住友化学株式会社 | Defect testing method, defect testing device and inspection probe |
| CN105527339A (en) * | 2016-03-01 | 2016-04-27 | 江南大学 | Nondestructive detection method based on combined U-shaped pulse electromagnetic sensor |
| CN105527339B (en) * | 2016-03-01 | 2019-01-25 | 江南大学 | Lossless detection method based on the U-shaped pulse electromagnetic sensor of combined type |
| CN108828474A (en) * | 2018-06-21 | 2018-11-16 | 苏州佳祺仕软件技术有限公司 | A kind of multistation apparatus for measuring magnetic flux |
| CN108828474B (en) * | 2018-06-21 | 2024-06-07 | 苏州佳祺仕软件技术有限公司 | Multi-station magnetic flux measuring device |
| CN109946371A (en) * | 2019-04-04 | 2019-06-28 | 中国特种设备检测研究院 | A kind of metal defect detection sensor |
| CN114252504A (en) * | 2021-12-20 | 2022-03-29 | 马鞍山钢铁股份有限公司 | Online rapid detection method and detection device for corner cracks of continuous casting slab |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100432665C (en) | 2008-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1908648A (en) | Online detecting device and method for two-field leakage magnetic flux of defects on steel products surface | |
| CN101975819B (en) | Automatic eddy current/ magnetic memory device for detecting defect on surface layer of inner wall of old cylinder barrel | |
| CN201083697Y (en) | Non-contact type round steel on-line fluorescence magnetic particle flaw detection equipment | |
| CN104266960B (en) | Scan-type microwave reflection carrier recombination lifetime test system and method for testing | |
| CN105336467A (en) | Whole magnetizing method and device of multi-pole motor permanent magnet rotor | |
| CN110579536B (en) | Multi-probe ultrasonic flaw detection device suitable for large ring piece | |
| CN105806183A (en) | Automatic bearing detection all-in-one machine | |
| CN107014894A (en) | The steel construction Damage of Corroded imaging system and method detected based on electromagnetic attraction | |
| CN114910009A (en) | Visual detection device and method for monitoring wire turn winding distance in real time | |
| CN102297893A (en) | On-line surface detection apparatus and method for continuous casting billet | |
| CN206778955U (en) | Piston pin detection device | |
| EP2613143A1 (en) | Apparatus and method for non-destructive inspections | |
| CN2796082Y (en) | Faraday device for detecting bundle | |
| CN113030241B (en) | Device and method for distinguishing magnetic flux leakage detection signals of inner wall and outer wall of steel pipe in use | |
| CN104076086A (en) | High-speed train bogie crack electromagnetic detecting device | |
| CN112014467A (en) | Device and method for detecting quality defects of storage battery grid and method for detecting defects of grid mold | |
| CN1115214C (en) | Method and equipment for inspecting surficial crack and crackclose to surface for conticast billets | |
| CN203858209U (en) | Steel pipe crack detection machine | |
| CN111122696A (en) | Detect steel multichannel eddy current testing system | |
| CN210572126U (en) | Electromagnetic super surface acoustic wave probe device for flaw detection of train wheels | |
| CN216525567U (en) | Conductivity tester suitable for silicon wafers and silicon ingots | |
| CN114354754A (en) | Bolt integrated detection device and detection method | |
| CN204807507U (en) | Automatic magnetic leakage detection device of hub bearing spinning face | |
| CN114813923A (en) | Bearing sleeve ring subsurface defect magnetic saturation eddy current detection automation device and use method | |
| CN206583862U (en) | The ultrasonic imaging system of energy mobile sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20130805 |