CN103335926A - Method and device for measuring concentration of magnetic suspension for magnetic powder inspection - Google Patents
Method and device for measuring concentration of magnetic suspension for magnetic powder inspection Download PDFInfo
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- CN103335926A CN103335926A CN2013102647929A CN201310264792A CN103335926A CN 103335926 A CN103335926 A CN 103335926A CN 2013102647929 A CN2013102647929 A CN 2013102647929A CN 201310264792 A CN201310264792 A CN 201310264792A CN 103335926 A CN103335926 A CN 103335926A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 20
- 238000007689 inspection Methods 0.000 title claims abstract description 19
- 239000000725 suspension Substances 0.000 title abstract 6
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims description 46
- 239000013049 sediment Substances 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000011088 calibration curve Methods 0.000 abstract description 3
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- 230000007547 defect Effects 0.000 abstract description 3
- 238000011179 visual inspection Methods 0.000 abstract 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000004062 sedimentation Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
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- 239000006249 magnetic particle Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
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- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 230000005426 magnetic field effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a method for measuring concentration of magnetic suspension for magnetic powder inspection, also relates to a corresponding device, and belongs to the technical field of material defect detection. The method comprises the steps of building a reference unit which can calibrate the concentration of the magnetic suspension, obtaining a reference standard sample after relative movement of the reference unit in a magnetic field, obtaining a group of electromagnetic induction measured values, building a change relation curve between the electromagnetic induction measured values and the magnetic suspension concentrations in a two-dimensional coordinate system, obtaining a flatly deposited to-be-tested sample, and determining the corresponding magnetic suspension concentration value according to the change relation curve.The invention breaks the convention of visual inspection in measurement of the existing technology, realizes the scientific quantitative measurement on the magnetic powder content in the magnetic suspension by instruments and the calibration curve, and has the remarkable advantages of being accurate, rapid, simple and convenient to operate, and the like.
Description
Technical field
The present invention relates to a kind of measuring method of Non-Destructive Testing material, especially a kind of magnetic powder inspection Particle content measuring method also relates to corresponding device simultaneously, belongs to fault in material Detection Techniques field.
Background technology
It is to utilize magnetic phenomenon to detect a kind of lossless detection method of ferrimagnet surface of the work and near surface flaw that magnetic detects.Its ultimate principle is: when workpiece is magnetized, because the existence of uncontinuity defective, make the magnetic line of force on surface of the work and nearly surface local distortion take place and produce stray field, absorption is applied to the magnetic of surface of the work, under suitable illumination, form visual visible magnetic trace, thereby demonstrate position, size, shape and the order of severity of uncontinuity defective.
The magnetic detection method can be divided into wet method detection and dry method and detect according to carrier fluid used in the testing process or carrier difference.Wet method detects than dry method, have detection efficiency height, magnetic flaw detection ink recyclable, to the detection sensitivity advantages of higher of surface of the work tiny flaw, use more extensive.And wet method is Particle content to a very important index of the evaluation of magnetic flaw detection ink in detecting, and this concentration is very big to the sensitivity influence of display defect, the concentration difference, and magnetic particle testing sensitivity is also different.Concentration is too low, influences stray field to the adsorbance of magnetic, thereby the magnetic trace shows the unintelligible omission that causes; Concentration is too high, can be detained a lot of magnetics at surface of the work, forms excessive background, might cause subterranean weakness magnetic trace to show.In addition, when different workpiece is carried out the detection of wet method magnetic, should select suitable Particle content according to the surface state of workpiece.Generally, detecting shaggy foundry goods wants the bright and clean forging of specific surface to select the higher magnetic flaw detection ink of concentration.Therefore, regularly, fast, quantitatively, accurately grasp the size of Particle content in the magnetic testing process, to guarantee detection sensitivity and result reliability, avoid erroneous judgement, leak visit very important.
The method of existing magnetic powder inspection technology controlling and process Particle content is the qualified bound scope of demarcating (namely determine) Particle content with the milliliter number that magnetic precipitates in pyriform sediment tube (100ml) mostly.Relevant magnetic non-destructive testing standard sees Table 1 to the bound scope dictates of qualified magnetic liquid concentration both at home and abroad.
The Particle content scope of table 1 correlation standard
Observe the time of magnetic precipitation milliliter number in the concentration sediment tube (100ml) and stipulate that according to related standards oiliness carrier fluid magnetic flaw detection ink needs 1 hour post precipitation to observe, the water carrier fluid magnetic flaw detection ink needs to observe after 30 minutes.
Reflect in the practice that there are the following problems:
1) observe magnetic settling time in the concentration sediment tube oversize (oiliness carrier fluid 1 hour, water carrier fluid 30 minutes) in the magnetic flaw detection ink, what be unfavorable for guaranteeing producing normally carries out.
2) concentration of particle content is easy to be subjected to magnetic flaw detection ink pollutant (dust, staple foreign material, greasy dirt etc.) influence in the milliliter number reflection magnetic flaw detection ink that magnetic precipitates in the observation concentration sediment tube, and accuracy of detection is lower, is difficult to obtain testing result accurately.
Summary of the invention
Primary and foremost purpose of the present invention is: the problem at above-mentioned prior art exists, a kind of magnetic powder inspection Particle content measuring method that can quick and precisely obtain testing result is proposed, and provide corresponding device simultaneously.
Further aim of the present invention is: propose a kind of magnetic powder inspection Particle content measuring method that can more fast, accurately obtain testing result, provide corresponding device simultaneously.
In order to reach above primary and foremost purpose, magnetic powder inspection of the present invention may further comprise the steps with the Particle content measuring method:
Step 1, at least three predetermined qualities of general (for example 0.1 restrain, 0.2 gram,) magnetic put into the concentration sediment tube of respective amount respectively, in each concentration sediment tube, inject the liquid medium (oiliness carrier fluid or water carrier fluid) of demarcating volume (demarcating volume by relevant criterion is 100ml) more respectively, as the reference cell of demarcating Particle content;
Step 4, the quality with the interior magnetic of electromagnetic induction measured value and unit volume (can with demarcate volume equate) is X, Y coordinate respectively, sets up two-dimensional coordinate system, formation electromagnetic induction measured value and Particle content variation relation curve;
The magnetic flaw detection ink to be measured of the same liquid medium of volume is demarcated in step 5, the collection of usefulness concentration sediment tube, puts into the uniform magnetic field of predetermined strength and does relative motion, makes magnetic uniform settling in the concentration sediment tube, obtains the smooth sample to be tested of deposition;
In order to reach further purpose, in above-mentioned steps two and the step 5, make magnetic in the concentration sediment tube in the uniform settling process, apply a disturbed magnetic field (its change of magnetic field strength), can further accelerate the magnetic sedimentation like this, thereby and avoid a small amount of magnetic to be adsorbed on and guarantee accuracy of detection on the tube wall.
Further, described uniform magnetic field and disturbed magnetic field form by the horizontal circle coil, described wound coil radially vertical with concentration sediment tube direction of motion.The magnetic field intensity of described disturbed magnetic field changes with sinusoidal rule.The concentration sediment tube is put into the uniform magnetic field of predetermined strength and is done at the uniform velocity relative motion.
The present invention has broken through and has measured the routine that Particle content detects by an unaided eye in the existing magnetic powder inspection technology, realized that by the device of calibration curve and quick and stable sedimentation magnetic and in conjunction with the electromagnetic induction measurement mechanism particle content in the magnetic flaw detection ink is carried out scientific quantitative to be measured, has accurately, fast the remarkable advantage that waits easy and simple to handle.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the magnetic powder inspection of one embodiment of the invention Particle content measurement mechanism structural representation.
Embodiment
Embodiment one
The magnetic powder inspection of present embodiment is mounted with the horizontal circle coil 2 that the energising back forms uniform magnetic field with the Particle content measurement mechanism as shown in Figure 1 on the frame 1, the top of horizontal circle coil 2 settles motor 3 by gear train driven vertical jacking gear 8.The positioned beneath energising control of horizontal circle coil 2 forms the disturbance coil 9 of disturbed magnetic field.Being uniform magnetic field and disturbed magnetic field forms by the horizontal circle coil, wound coil radially vertical with concentration sediment tube direction of motion.Frame 1 both sides are settled electromagnetic induction measurement mechanism 6 and Displaying Meter 7 respectively.Electromagnetic induction measurement mechanism 6 is made of the electromagnetic induction coil 6-1 of bottom and the support 6-2 on top, and the signal output part of electromagnetic induction coil 6-1 connects display instrument 7.Frame 1 is interior as the electric elements installation site.
When carrying out magnetic powder inspection and measuring with Particle content, carry out as follows:
Step 1, one group of predetermined grams 0.1 that will accurately weigh with balance, 0.2,0.6 MPI fluorescent magnetic particles is put into one group of concentration sediment tube 4 respectively, again with inject demarcating the oiliness carrier fluid (water carrier fluid also can) of volume 100ml in each concentration sediment tube respectively, as the reference cell of demarcating Particle content.Described oiliness carrier fluid can be transformer oil and kerosene liquid mixture prepared or directly use tasteless kerosene by a certain percentage, adds an amount of magnetic then, is the oiliness magnetic flaw detection ink.Described water carrier fluid can be that water and spreading agent, defoamer, rust preventive etc. are prepared mixed liquor by a certain percentage, add an amount of magnetic after, be the water-based magnetic flaw detection ink.
Step 4, be X, Y coordinate with the contained predetermined grams of magnetic of electromagnetic induction measured value and 100ml oiliness carrier fluid (water carrier fluid also can) respectively, set up two-dimensional coordinate system, and according to the electromagnetic induction measured value of each benchmark standard specimen correspondence and predetermined grams described point in two-dimensional coordinate system of magnetic, again each point is connected with smooth curve, form electromagnetic induction measured value and Particle content variation relation curve.
Step 5, gather the magnetic flaw detection ink to be measured of the same liquid medium of 100ml with the concentration sediment tube in the production scene, be placed in the jacking gear 8, starter motor 3, put it into gradually in the uniform magnetic field with horizontal circle coil 2 centers of Current Control predetermined strength, relative magnetic field uniform motion, by the disturbed magnetic field effect, make magnetic rapid uniform settling in the concentration sediment tube simultaneously, obtain the smooth sample to be tested of deposition.
Present embodiment has been set up one and has been overlapped method of testing and the device of Particle content accurately and rapidly.The particle content (mg/100ml) of can direct quantitative measuring magnetic flaw detection ink in the concentration sediment tube, and be not subjected to non magnetic pollutant effects in the magnetic flaw detection ink, not only improved the precision that detects, to obtaining best Particle content scope under the field working conditions in real time, instruct the precision ratio of actual production, raising defective to have vital role simultaneously.
Facts have proved, measuring method of the present invention only needs 3-6 minute from being sampled to the time of determining the whole process of Particle content numerical value, detection speed and efficiency far are higher than the domestic and foreign current standard code, and namely oiliness carrier fluid precipitation 1 hour, water carrier fluid precipitation are observed magnetic subsidence volumn in the concentration sediment tube (or height) after 30 minutes.This device has taken full advantage of uniform magnetic field, disturbed magnetic field to the adjustment of magnetic rapid subsidence, magnetic flatness and has reduced magnetic wall cling phenomenon role, thereby reaches the technique effect that fast, steadily precipitates magnetic.Wherein, uniform magnetic field mainly works magnetic sedimentation, the effect of adjusting magnetic flatness accelerated; Disturbed magnetic field also has the magnetic of acceleration settlement action, but it mainly plays minimizing magnetic wall cling phenomenon.In a word, the method that present embodiment is measured Particle content has overcome the deficiency that Particle content in the existing magnetic powder inspection technology is measured long, complicated operation detection time, utilize the device of calibration curve and quick and stable sedimentation magnetic, realized the accurate, quick of particle content in the magnetic flaw detection ink measured in conjunction with electromagnetic detection, and can provide the optimum value of Particle content under the concrete operating mode rapidly, to optimizing on-the-spot defects detecting technology, improve the accuracy rate that detects and have important directive function.
In addition to the implementation, the present invention can also have other embodiments.In theory, the concentration sediment tube is inconsistent with the relative uniform magnetic field motion of non-other vertical direction of motion, disturbed magnetic field and uniform magnetic field direction, also is feasible.In addition, in theory, form the wound coil of uniform magnetic field and the disturbance coil of formation disturbed magnetic field and both can arrange respectively, also can unite two into one.Obviously, the inventive method also is applicable to the measurement of the Particle content of visible magnetic particle.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (8)
1. magnetic powder inspection Particle content measuring method is characterized in that may further comprise the steps:
Step 1, the magnetic of at least three predetermined qualities is put into the concentration sediment tube of respective amount respectively, in each concentration sediment tube, inject the liquid medium of demarcating volume more respectively, as the reference cell of demarcating Particle content;
Step 2, will do relative motion as the uniform magnetic field that the reference cell of demarcating Particle content is put into predetermined strength, make magnetic uniform settling in the concentration sediment tube, obtain the smooth benchmark standard specimen of deposition;
Step 3, is in the given time put into the electromagnetic induction coil that is connected to Displaying Meter with the benchmark standard specimen, obtains one group of electromagnetic induction measured value;
Step 4, the quality with magnetic in electromagnetic induction measured value and the unit volume is X, Y coordinate respectively, sets up two-dimensional coordinate system, forms electromagnetic induction measured value and Particle content variation relation curve;
The magnetic flaw detection ink to be measured of the same liquid medium of volume is demarcated in step 5, the collection of usefulness concentration sediment tube, puts into the uniform magnetic field of predetermined strength and does relative motion, makes magnetic uniform settling in the concentration sediment tube, obtains the smooth sample to be tested of deposition;
Step 6, is in the given time put into the electromagnetic induction coil that is connected to Displaying Meter with sample to be tested, obtains the electromagnetic induction measured value; And by the definite corresponding Particle content value of above-mentioned electromagnetic induction measured value and Particle content variation relation curve.
2. magnetic powder inspection according to claim 1 Particle content measuring method is characterized in that: in described step 2 and the step 5, make magnetic in the uniform settling process, apply a disturbed magnetic field in the concentration sediment tube.
3. according to claim 2 or 3 described magnetic powder inspection Particle content measuring methods, it is characterized in that: in the described step 4, according to the electromagnetic induction measured value of each benchmark standard specimen correspondence and predetermined grams described point in two-dimensional coordinate system of magnetic, again each point is connected into electromagnetic induction measured value and Particle content variation relation curve with smooth curve.
4. according to claim 2 or 3 described magnetic powder inspection Particle content measuring methods, it is characterized in that: described uniform magnetic field and disturbed magnetic field form by the horizontal circle coil, described wound coil radially vertical with concentration sediment tube direction of motion.
5. magnetic powder inspection according to claim 4 Particle content measuring method, it is characterized in that: the magnetic field intensity of described disturbed magnetic field changes with sinusoidal rule, and the concentration sediment tube is put into the uniform magnetic field of predetermined strength and is done at the uniform velocity relative motion.
6. realize claim 1 or the 2 described magnetic powder inspections device of Particle content measuring method, it is characterized in that: be mounted with the horizontal circle coil that the energising back forms uniform magnetic field on the frame, jacking gear is settled in the top of described horizontal circle coil, and the positioned beneath energising control of described wound coil forms the disturbance coil of disturbed magnetic field.
7. device according to claim 6, it is characterized in that: described frame both sides are settled electromagnetic induction measurement mechanism and Displaying Meter respectively.
8. device according to claim 7 is characterized in that: described electromagnetic induction measurement mechanism is configured to by the electromagnetic induction coil of bottom and top, and the signal output part of described electromagnetic induction coil connects described Displaying Meter.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330408A (en) * | 2014-10-28 | 2015-02-04 | 南京化工特种设备检验检测研究所 | Antirust non-fluorescent water-based magnetic suspension and preparation method thereof |
| CN104330464A (en) * | 2014-10-28 | 2015-02-04 | 南京化工特种设备检验检测研究所 | Nonfluorescent oil-base magnetic suspension for magnetic powder flaw detection and preparation method of nonfluorescent oil-base magnetic suspension |
| CN105548343A (en) * | 2015-12-10 | 2016-05-04 | 浙江大学 | Magnetic suspension-based detection apparatus and detection method for defects of parts |
| RU175148U1 (en) * | 2017-06-06 | 2017-11-23 | Владимир Александрович Чуприн | Installation for magnetic particle inspection of products |
| CN107870140A (en) * | 2016-09-22 | 2018-04-03 | 宝山钢铁股份有限公司 | Particle content computing device and method in a kind of round steel magnetic powder inspection |
| CN114062211A (en) * | 2020-08-04 | 2022-02-18 | 中车沈阳机车车辆有限公司 | Magnetic suspension volume concentration detection method, detection system and magnetic powder flaw detection system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103661A (en) * | 1985-05-18 | 1986-04-10 | 西安交通大学 | The Particle content determinator |
| CN1159582A (en) * | 1995-11-10 | 1997-09-17 | 新宇宙电机株式会社 | Method of determining magnetic powder concentration and apparatus use for method |
| CN2809639Y (en) * | 2005-07-15 | 2006-08-23 | 曾德文 | Magnetic powder concentration sensor for magnetic suspension |
| JP2006266723A (en) * | 2005-03-22 | 2006-10-05 | Toyota Motor Corp | Apparatus and method for inspecting coil damage |
| US20100054886A1 (en) * | 2006-03-23 | 2010-03-04 | Robert Bosch Gmbh | Accessory with Hub for Use with Multiple Types of Rotary Tool Mandrels |
| CN202886327U (en) * | 2012-08-31 | 2013-04-17 | 爱德森（厦门）电子有限公司 | Device for carrying out online real-time dynamic monitoring on concentration of magnetic suspension |
| CN103063554A (en) * | 2012-12-28 | 2013-04-24 | 河北省电力公司电力科学研究院 | Rapid and qualitative measurement method for magnetic suspension solution concentration based on transmittance |
-
2013
- 2013-06-27 CN CN201310264792.9A patent/CN103335926B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103661A (en) * | 1985-05-18 | 1986-04-10 | 西安交通大学 | The Particle content determinator |
| CN1159582A (en) * | 1995-11-10 | 1997-09-17 | 新宇宙电机株式会社 | Method of determining magnetic powder concentration and apparatus use for method |
| JP2006266723A (en) * | 2005-03-22 | 2006-10-05 | Toyota Motor Corp | Apparatus and method for inspecting coil damage |
| CN2809639Y (en) * | 2005-07-15 | 2006-08-23 | 曾德文 | Magnetic powder concentration sensor for magnetic suspension |
| US20100054886A1 (en) * | 2006-03-23 | 2010-03-04 | Robert Bosch Gmbh | Accessory with Hub for Use with Multiple Types of Rotary Tool Mandrels |
| CN202886327U (en) * | 2012-08-31 | 2013-04-17 | 爱德森（厦门）电子有限公司 | Device for carrying out online real-time dynamic monitoring on concentration of magnetic suspension |
| CN103063554A (en) * | 2012-12-28 | 2013-04-24 | 河北省电力公司电力科学研究院 | Rapid and qualitative measurement method for magnetic suspension solution concentration based on transmittance |
Non-Patent Citations (1)
| Title |
|---|
| 马伯志 等: "在线磁悬液浓度测量装置的研制", 《无损检测》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330408A (en) * | 2014-10-28 | 2015-02-04 | 南京化工特种设备检验检测研究所 | Antirust non-fluorescent water-based magnetic suspension and preparation method thereof |
| CN104330464A (en) * | 2014-10-28 | 2015-02-04 | 南京化工特种设备检验检测研究所 | Nonfluorescent oil-base magnetic suspension for magnetic powder flaw detection and preparation method of nonfluorescent oil-base magnetic suspension |
| CN105548343A (en) * | 2015-12-10 | 2016-05-04 | 浙江大学 | Magnetic suspension-based detection apparatus and detection method for defects of parts |
| CN107870140A (en) * | 2016-09-22 | 2018-04-03 | 宝山钢铁股份有限公司 | Particle content computing device and method in a kind of round steel magnetic powder inspection |
| CN107870140B (en) * | 2016-09-22 | 2019-12-27 | 宝山钢铁股份有限公司 | Device and method for calculating concentration of magnetic suspension in round steel magnetic powder flaw detection |
| RU175148U1 (en) * | 2017-06-06 | 2017-11-23 | Владимир Александрович Чуприн | Installation for magnetic particle inspection of products |
| CN114062211A (en) * | 2020-08-04 | 2022-02-18 | 中车沈阳机车车辆有限公司 | Magnetic suspension volume concentration detection method, detection system and magnetic powder flaw detection system |
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