CN204495772U - Face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit - Google Patents
Face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit Download PDFInfo
- Publication number
- CN204495772U CN204495772U CN201520039933.1U CN201520039933U CN204495772U CN 204495772 U CN204495772 U CN 204495772U CN 201520039933 U CN201520039933 U CN 201520039933U CN 204495772 U CN204495772 U CN 204495772U
- Authority
- CN
- China
- Prior art keywords
- magneto
- optic
- weld
- optic imaging
- probe
- 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 - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model discloses a kind of magneto-optic imaging non-destructive pick-up unit for detecting face of weld and sub-surperficial tiny flaw, comprising controller and magneto-optic probe and the magnetic field generator be installed under it and magneto-optic imaging sensor.Device also comprises holding and probe roller that handle pops one's head in for magneto-optic for the Structure deformation of magneto-optic probe with weldment surface.The utility model adopts magneto-optic imaging technique, in weld defect testing process, tested weld seam produces induced field by magnetic field generator, and generates weld defects image by magneto-optic imaging sensor, and controller realizes the image recognition of weld seam tiny flaw and weld defects position calculation.The Non-contact nondestructive that this device can realize weld seam tiny flaw position detects automatically, and not only accuracy of detection is high, and weld defect imaging is directly perceived, and reliable, and safety and environmental protection is simple.
Description
Technical field
The utility model relates to the cannot-harm-detection device of weld defects, is specifically related to face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit.
Background technology
Welding is the important process technology of manufacture field, has that condition of work is severe, workload large and quality requirements high.Owing to there is the impact of various random factors in welding process, the tiny flaw on the welded seam surfaces such as weldment inevitably cracks sometimes, lack of penetration, incomplete fusion, pore, slag inclusion and sub-surface.In order to ensure the quality of weldment product, weld defects must be detected accurately and timely.In actual production process, except visual weld bead surface imperfection and forming defect, usually also need to adopt Dynamic Non-Destruction Measurement to detect weld defects, therefore this device has important practical significance.
The domestic and international Non-Destructive Testing for weld defects at present mainly concentrates on following several method: (1) magnetic powder detection method, namely on detected weldment, evenly magnetic is covered with, after magnetization, tested weldment weld defects can produce the irregular magnetic line of force, and these defects will be shown by the distribution of magnetic.Magnetic testing is generally used for the surface of ferromagnetism weldment and the detection of near surface flaw, and its cost is lower, and sensitivity is higher and to the requirement of tested weldment amorphism.But it must be paramagnetic material that tested weldment requires, before detection, must process on first butt-welding fitting surface, to guarantee weldment smooth surface, guarantees the distribution that can not affect the magnetic line of force because of air spots or scar, affect testing result.(2) penetrant detecting method, its principle is the capillarity based on liquid, is the lossless detection method detecting weldment Surface-breaking defect, specifically comprises fluorescence and painted two kinds of methods.The principle of fluoroscopic examination is immersed in fluorescent liquid by tested weldment, because of capillarity, has been filled fluorescent liquid in defect inside.Removing surface liquid, because photoelectric effect fluorescent liquid is under ultraviolet irradiation, sends visible ray and manifests defect.The principle of coloration detection is similar with fluoroscopic examination, and it does not need Special Equipment, just with toner, the coloring liquid sucking-off weldment be adsorbed in defect surface is manifested defect.The method sensitivity when detecting weldment cracks with surface openings is high, and effects on surface is moist or there is the sample of coating, can extreme influence Detection results, and the experience of detection person is depended in the judgement of the method to a great extent.(3) ray detection method utilizes ray (x-ray, gamma-rays etc.) to have certain attenuation law through in testee process, according to a kind of method being detected weldment inherent vice by the transmitted intensity after the decay of weldment each position.Its attenuation degree of different objects is different, and the degree of decay is determined by the kind of the thickness of object, the material category of object and ray.Ray detection is mainly for detection of weldment inside workpiece volume flaw, and the thickness of workpiece is not easily more than 80mm, can do corresponding to thicken or thinning according to the attenuation coefficient of material.The method testing cost is high, and checkout equipment is comparatively large, and the x radiation x of generation is very big to human injury, lower to the detection sensitivity of micro-crack defect.(4) ultrasonic detection method, its principle is when utilizing ultrasound wave to propagate in measured workpiece, the impact of measured workpiece material acoustics characteristic and the change of its interior tissue can be subject to, by hyperacoustic influence degree and status analysis, carry out the change of detecting material performance and structure.The detection efficiency of this detection method is higher, and cost is lower, but other detection method relatively, higher to the requirement of operating personnel.The method has certain difficulty for the different types of defect of difference, needs couplant when its maximum shortcoming detects exactly.(5) eddy current detection method, its Cleaning Principle is based on electromagnetic induction phenomenon, the magnetic field of change produces eddy current in conductor workpiece, if within the workpiece existing defects, be mingled with, conductivity variations or structure change time, the flowing of eddy current can be affected, superposition magnetic field is changed, the defect of welding can be judged according to the change in magnetic field.The method have detection efficiency high, be applicable to on-line checkingi, without the need to the advantage such as couplant and non-contact detecting, and higher to the sensitivity of nearly surface or surface imperfection.But be only suitable for the detection on conductive material surface and nearly surface, be difficult to judge the kind of defect, shape and size.(6) other detection method.As laser hologram Non-Destructive Testing, by body surface and inner defect, by the method that the external world loads, it is made to cause the distortion of local at corresponding body surface, observe and more this distortion with holograph, and record the deformation of the body surface under different extraneous load effect, carry out observation and analysis, then judgment object inside whether existing defects.Acoustic emission testing technology, be object under extraneous conditioning, defect or object abnormal position stress is concentrated and produces distortion or fracture, and discharges strain energy with elastic wave form, determines the technology of acoustic emission source by instrument determination and analysis acoustic emission signal.Infrared detection technology, can by a constant hot-fluid injection workpiece when detecting, if existing defects in workpiece, because defect area is different from the thermal diffusion coefficient of nondefective zone, so will be variant in the Temperature Distribution of surface of the work, inner defectiveness is just different from the surface temperature corresponding to nondefective zone, infrared waves (heat radiation) sent thus is also just different, utilize infrared eye can response infrared ripple convert the function of corresponding size electric signal to, point by point scanning surface of the work just can obtain the distribution situation of workpiece surface temperature, thus find workpiece surface temperature abnormal area, determine the position of inside workpiece defect.
To sum up analyze known, the lossless detection method of above use has it not enough.Magnetic testing is limited to ferrimagnet, and has strict demand to surface of the work; Liquid penetrant testing is limited to Surface-breaking defect; Ray detection testing cost is high, and checkout equipment is comparatively large, and the x radiation x of generation is very big to human injury; The requirement of ultrasound examination to operating personnel is higher, and distinguishing different types of weld defects has certain difficulty and need couplant; EDDY CURRENT is only suitable for the detection on conductive material surface and nearly surface, and is difficult to judge the kind of weld defects, shape and size; Laser hologram Non-Destructive Testing depends on that can the defect of interior of articles cause the corresponding deformation of body surface under external force; Acoustic emission testing technology due to the intensity of acoustic emission signal general very weak, need could detect by sensitive electronic device; Infrared detection technology mainly measures weldment surface heat state, can not determine the Warm status of weldment inside, expensive compared with other detecting instrument or routine monitoring equipment.
Summary of the invention
Fundamental purpose of the present utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of accuracy of detection high, reliable, be simple and easy to, free of contamination face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit.
For achieving the above object, the utility model adopts following technical scheme: a kind of for detecting face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, comprises controller and magneto-optic probe and the magneto-optic imaging sensor under being installed on it and magnetic field generator.Device also comprises hand-held probe handle for the holding of magneto-optic probe and controller and probe roller for magneto-optic probe and the Structure deformation on weldment surface.
Above-mentioned weld seam tiny flaw pick-up unit comprises computer control, connects bus, magneto-optic imaging sensor and magnetic field generator.
Above-mentioned weld seam tiny flaw pick-up unit is equiped with the probe for fixing magneto-optic imaging sensor and magnetic field generator, and magnetic field generator and magneto-optic imaging sensor are integrated in magneto-optic probe.
Above-mentioned detection device is equiped with hand-held handle, and wherein controller level is installed on the left of controller by hexagon socket head cap screw, and probe handle is installed in magneto-optic probe upside by hexagon socket head cap screw.
Above-mentioned detection device is equiped with probe roller, and probe roller is by hexagon socket head cap screw installing and corner, probe bottom.
Compared with prior art, the beneficial effect that the utility model has is: the utility model adopts magneto-optic imaging sensing technology, in weld defect testing process, tested weld seam produces induced field by magnetic field generator, and the magneto optic images of weld defects is generated by magneto-optic imaging sensor, realize weld defects image recognition and the calculating of weld defects position coordinates.This device can realize automatically detecting the noncontact of the weld seam tiny flaw such as crackle, lack of penetration, incomplete fusion, pore, slag inclusion, and not only measuring accuracy is high, and reliable, be simple and easy to, pollution-free.Due to the flexible cooperation of magneto-optic imaging sensor and computer control, make computer control that the effect of magneto-optic imaging and Real-time Obtaining can be regulated to detect the weld defect situation of position, automaticity is high, and detection speed is fast.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the utility model embodiment;
Fig. 2 is the controller architecture schematic diagram of the utility model embodiment;
Fig. 3 is the magneto-optic probe bottom surface structure schematic diagram of the utility model embodiment;
Fig. 4 is the magneto-optic probe side structure schematic diagram of the utility model embodiment;
Fig. 5 is the utility model face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit system works schematic diagram.
Each numbering implication in figure: 1-controller, 2-connects bus, and 3-magneto-optic is popped one's head in.
Wherein each son numbering implication in 1-controller: 1-1-controller level, 1-2-liquid crystal display, 1-3-magnetic field size adjustment knob, 1-4-power button, 1-5-locks button, and 1-6-refreshes button, 1-7-gray-scale map/pcolor conversion keys, 1-8-gray scale adjustment button, 1-9-histogram equalization button, 1-10-defect recognition button, 1-11-strengthens and weakens button, 1-12-mitigation and amplification button, 1-13-returns button.
Wherein each son numbering implication in 3-magneto-optic probe: 3-1-magnetic field generator, 3-2-magneto-optical sensor, 3-3 to 3-6-pops one's head in roller, 3-7-probe handle.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
As shown in Figure 1 to Figure 2, the utility model is the magneto-optic imaging non-destructive pick-up unit for detecting face of weld and sub-surperficial tiny flaw, comprises controller (1) and magneto-optic probe (3) and the magnetic field generator under being installed on it (3-1) and magneto-optic imaging sensor (3-2).Device also comprises hand-held probe handle (3-7) for the holding of magneto-optic probe (3) and probe roller (3-3 to the 3-6) Structure deformation for magneto-optic probe (3) and weldment surface.Controller (1) top is equiped with liquid crystal display (1-2) and function button (1-3 to 1-13), wherein liquid crystal display (1-2) is for the real-time display of weld defects, and function button (1-3 to 1-13) is for the adjustment of magneto-optic imaging effect.Weld defects detection parts comprise magnetic field generator (3-1) and magneto-optic imaging sensor (3-2).Under described weld defects detection parts are installed in magneto-optic probe (3) by hexagon socket head cap screw.Wherein send instruction by controller (1) and start magnetic field generator (3-1) work, controlling magnetic field generator (3-1) produces induced field in commissure.Described magneto-optic imaging sensor (3-2) major part comprises LASER Light Source, the polarizer, cmos sensor, analyzer and magneto-optic wafer.Magneto-optic imaging sensor can be embodied as picture to the distribution situation in magnetic field, belongs to non-contact measurement, and good reliability, measuring accuracy are high, low in energy consumption and the rate of information throughput is high.When magneto-optic imaging sensor (3-2) works above weldment surface.Make to produce induced field near the defect of weldment by accurate controlling magnetic field generator (3-1), due to the existence of weld defects, the Distribution of Magnetic Field of induced field at weld defects place will change.Rotate a certain angle after polarized light is parallel through induced field reflection, passing through of postrotational polarized light or cut-off can be realized pointedly again by analyzer, finally obtained and imaging by cmos sensor, namely the image of gained contains the magneto optic images of weld defects information.Described probe handle (3-7) is installed in magneto-optic probe upside by hexagon socket head cap screw, and hand-held probe handle (3-7) carries out the real-time detection of weld defect for holding whole device in testing process.
The work of the magneto-optic imaging non-destructive pick-up unit of whole face of weld and sub-surperficial tiny flaw controls by computer control system, and Fig. 5 is the system works schematic diagram of the utility model face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit.First computer system control magnetic field generator produces induced field, and send instruction simultaneously and start the work of magneto-optic imaging sensor, synchronous coordination magneto-optic imaging sensor gathers the magneto optic images of weld defects, and the magneto optic images of acquisition is input to computer control.Then processed by corresponding image algorithm butt welded seam defect image, obtain type and the position of weld defect, realize the automatic detection of butt welded seam defect, liquid crystal display (1-2) shows real-time testing result.Computer control also has self-checking capability, significantly improves the real-time of system and the automaticity of observation and control technology.The control system energy auto modification measuring error adopted, improves weld defect position detection accuracy.
Principle of work: magneto-optic imaging sensor is connected with computer control respectively with magnetic field generator, during with this measurement device weld defect, to be placed in hand-held for this device on weldment and to make magneto-optic imaging sensor wafer align weldment surface.Computer control controlling magnetic field generator produces induced field, synchronous coordination magneto-optic imaging sensor gathers weld defects the magneto optic images, weld defects the magneto optic images is delivered to computer control, realizes the image procossing of weld defects, weld defects position calculation and weld defects type identification by computer control.Because computer control arithmetic speed is high and the application of image processing techniques, the real-time of weld defects and visual inspection can be realized.
Claims (7)
1. face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, comprise magnetic field generator (3-1), magneto-optic imaging sensor (3-2) that controller (1), connection bus (2) and magneto-optic are popped one's head in (3) and be installed on magneto-optic probe (3) bottom, device also comprises controller level (1-1) and probe handle (3-7) and the roller (3-3 that pops one's head in, 3-4,3-5,3-6).
2. face of weld according to claim 1 and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, is characterized in that: described magnetic field generator (3-1) and magneto-optic imaging sensor (3-2) are jointly for the detection of weld defect.
3. face of weld according to claim 1 and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, is characterized in that: described magnetic field generator (3-1) and magneto-optic imaging sensor (3-2) are integrated in magneto-optic probe (3).
4. face of weld according to claim 1 and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, is characterized in that: probe handle (3-7) is installed in magneto-optic probe (3) upside by hexagon socket head cap screw.
5. face of weld according to claim 1 and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, is characterized in that: controller level (1-1) is installed in controller (1) left side by hexagon socket head cap screw.
6. face of weld according to claim 1 and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, it is characterized in that: described probe roller (3-3,3-4,3-5,3-6) be installed in corner, magneto-optic probe (3) bottom by hexagon socket head cap screw.
7. face of weld according to claim 1 and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit, is characterized in that: described controller (1) by connect bus (2) pop one's head in magneto-optic (3) communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520039933.1U CN204495772U (en) | 2015-01-19 | 2015-01-19 | Face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520039933.1U CN204495772U (en) | 2015-01-19 | 2015-01-19 | Face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204495772U true CN204495772U (en) | 2015-07-22 |
Family
ID=53575077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520039933.1U Expired - Fee Related CN204495772U (en) | 2015-01-19 | 2015-01-19 | Face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204495772U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372324A (en) * | 2015-12-07 | 2016-03-02 | 电子科技大学 | Defect detection method based on magnetooptical imaging |
| CN106645289A (en) * | 2017-01-08 | 2017-05-10 | 广东工业大学 | Nondestructive detection system and method based on infrared magneto-optic imaging |
| CN106770625A (en) * | 2017-03-29 | 2017-05-31 | 广东工业大学 | A kind of alternating magnetic field magneto-optic imaging detection device and system |
| CN106770628A (en) * | 2017-02-08 | 2017-05-31 | 广东工业大学 | A kind of magneto-optic imaging non-destructive detection means |
| CN106990115A (en) * | 2017-06-07 | 2017-07-28 | 广东工业大学 | A kind of dual sensor weld seam nondestructive detection system |
| CN107132271A (en) * | 2017-05-26 | 2017-09-05 | 广东工业大学 | Structure light and magneto-optic imaging double-sensing appearance of weld and defect lossless detection method |
-
2015
- 2015-01-19 CN CN201520039933.1U patent/CN204495772U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372324A (en) * | 2015-12-07 | 2016-03-02 | 电子科技大学 | Defect detection method based on magnetooptical imaging |
| CN105372324B (en) * | 2015-12-07 | 2018-05-29 | 电子科技大学 | The defects of based on magneto-optic imaging method detection method |
| CN106645289A (en) * | 2017-01-08 | 2017-05-10 | 广东工业大学 | Nondestructive detection system and method based on infrared magneto-optic imaging |
| CN106770628A (en) * | 2017-02-08 | 2017-05-31 | 广东工业大学 | A kind of magneto-optic imaging non-destructive detection means |
| CN106770625A (en) * | 2017-03-29 | 2017-05-31 | 广东工业大学 | A kind of alternating magnetic field magneto-optic imaging detection device and system |
| CN107132271A (en) * | 2017-05-26 | 2017-09-05 | 广东工业大学 | Structure light and magneto-optic imaging double-sensing appearance of weld and defect lossless detection method |
| CN106990115A (en) * | 2017-06-07 | 2017-07-28 | 广东工业大学 | A kind of dual sensor weld seam nondestructive detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204495772U (en) | Face of weld and sub-surperficial tiny flaw magneto-optic imaging non-destructive pick-up unit | |
| CN103698393A (en) | Magneto-optical imaging nondestructive detection method of weld defects | |
| CN205374371U (en) | Magneto -optic formation of image nondestructive test platform | |
| CN106770628A (en) | A kind of magneto-optic imaging non-destructive detection means | |
| CN107132271A (en) | Structure light and magneto-optic imaging double-sensing appearance of weld and defect lossless detection method | |
| CN102095755B (en) | Nondestructive testing method of concrete structure | |
| CN203216857U (en) | Infrared detection device for metal defects | |
| Kuhn et al. | A comparison between thermosonics and thermography for delamination detection in polymer matrix laminates | |
| CN103163216A (en) | Defect identification and evaluation method of metallic conductor based on giant magnetoresistance sensor | |
| CN103487443A (en) | Electromagnetic induction thermal excitation method based pipeline defect infrared detection system | |
| CN107589174A (en) | A kind of weld defect detecting system | |
| CN203908994U (en) | Pulse flux leakage flaw detector | |
| CN107831192A (en) | The nondestructive detection system and method for a kind of defect | |
| CN108526745A (en) | A kind of laser welded seam detection device based on magneto-optical sensor | |
| CN108918657A (en) | A kind of workpiece, defect detection system | |
| CN106645289A (en) | Nondestructive detection system and method based on infrared magneto-optic imaging | |
| CN206772898U (en) | A kind of magneto-optic imaging non-destructive detection means | |
| CN110514734B (en) | Composite magnetic field magneto-optical imaging nondestructive detection system and method | |
| CN203405444U (en) | Device for detecting cracks of wind power generation impeller | |
| CN208391295U (en) | A kind of laser welded seam detection device based on magneto-optical sensor | |
| CN102590334A (en) | Complete set of eddy current flaw detection equipment for white vehicle body or parts | |
| CN209690214U (en) | A kind of modulation light stimulus infrared thermal imaging automation integration test detection device | |
| CN108982651A (en) | Exchange leakage field sensor based on ferromagnetic butt plates welding seam crack detection and the method using its progress crack detection | |
| CN210626394U (en) | Nondestructive testing system for magneto-optical imaging of composite magnetic field | |
| CN2720440Y (en) | Magnetooptical vortex imaging damage free detection apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20180119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |