CN105823822A - Magnetic suspension usability evaluation apparatus used for magnetic powder flaw-detection nondestructive testing and method thereof - Google Patents
Magnetic suspension usability evaluation apparatus used for magnetic powder flaw-detection nondestructive testing and method thereof Download PDFInfo
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- CN105823822A CN105823822A CN201510006912.4A CN201510006912A CN105823822A CN 105823822 A CN105823822 A CN 105823822A CN 201510006912 A CN201510006912 A CN 201510006912A CN 105823822 A CN105823822 A CN 105823822A
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Abstract
The invention discloses a magnetic suspension usability evaluation apparatus used for magnetic powder flaw-detection nondestructive testing and a method thereof. The apparatus comprises a test container, a concentration detector, an ultraviolet light source, a brightness sensor and a computer. The magnetic suspension is placed in the test container, the ultraviolet light source is used for irradiating the magnetic suspension in the test container, the brightness sensor detects the fluorescence brightness of the magnetic suspension through ultraviolet irradiation, fluorescence brightness is sent to the computer, the concentration detector is used for detecting the magnetic suspension concentration, and the magnetic suspension usability evaluation can be carried out according to the fluorescence brightness and the magnetic suspension concentration. The magnetic suspension usability evaluation apparatus and the method use the concentration detector for detecting the magnetic suspension concentration, use the brightness sensor for detecting the magnetic suspension fluorescence excited by the ultraviolet light source, the measured values are used for comprehensively evaluating the state of the magnetic suspension, so that the accurate evaluation for the magnetic suspension usability is realized.
Description
Technical field
The present invention relates to the method and apparatus of Non-Destructive Testing magnetic flaw detection ink usability evaluation, more particularly, it relates to for the magnetic flaw detection ink usability evaluation apparatus and method of magnetic powder inspection Non-Destructive Testing.
Background technology
Magnetic powder inspection is one of major technique of Non-Destructive Testing.Magnetic flaw detection ink is wet method magnetic powder inspection medium, the quality of magnetic flaw detection ink state, and flaw detection quality is caused the biggest impact.
In fluorescence wet method magnetic powder inspection, after on-the-spot high-volume part flaw detection, part magnetic powder is adsorbed, and makes Particle content reduce, and flaw detection quality is caused the biggest impact, and Particle content is too high or too low, all can reduce flaw detection sensitivity.Therefore, flaw detection personnel need first detect Particle content before flaw detection every day, determine the need for adding magnetic powder or changing magnetic flaw detection ink, to keep relatively-stationary Particle content according to measurement result.
For the mensuration of Particle content, traditional Particle content measuring method is the pyriform precipitation tube method using and measuring magnetic powder volume.Also some new Particle content detection methods and device are occurred in that.Such as patent CN103063554 " a kind of Particle content fast qualitative assay method based on transmittance ", utilizing magnetic flaw detection ink to change with concentration, the rule that transmittance changes is to detect Particle content.Or such as patent CN1712949A " magnetic powder concentration sensor of magnetic suspension ", utilize the curent change that electromagnetic induction causes to measure Particle content.
But in actual field is applied, magnetic powder inspection effect is not only relevant to Particle content, more relevant with the fluorescence that magnetic flaw detection ink reality can inspire.And traditional method only surveys Particle content, due to magnetic flaw detection ink after certain time uses not only concentration can change, also can be mixed into the impurity such as iron filings, sandy soil, it may appear that but measure the phenomenon that concentration fluorescent brightness up to standard is not enough.So in magnetic powder inspection should the comprehensive state that comprise concentration and fluorescent brightness of thoroughly evaluating magnetic flaw detection ink, preferably mate follow-up defects detection.
Summary of the invention
Comprehensive for the evaluating of magnetic flaw detection ink present in prior art, thus cause evaluating inaccurate problem, it is an object of the invention to provide the magnetic flaw detection ink usability evaluation apparatus and method for magnetic powder inspection Non-Destructive Testing.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of magnetic flaw detection ink usability evaluation device for magnetic powder inspection Non-Destructive Testing, including test container, concentration detector, ultraviolet source, luminance sensor, computer.Magnetic flaw detection ink is held in test container, magnetic flaw detection ink in ultraviolet source irradiation test container, the fluorescent brightness that luminance sensor detection magnetic flaw detection ink excites after ultraviolet light irradiates, and fluorescent brightness is sent to computer, concentration detector detection Particle content, and Particle content is sent to computer, computer carries out magnetic flaw detection ink usability evaluation according to fluorescent brightness and Particle content.
According to one embodiment of the invention, test container is glass tubing, and concentration detector is the induction coil being wrapped on described glass tubing.
For achieving the above object, the present invention also adopts the following technical scheme that
A kind of magnetic flaw detection ink usability evaluation method for magnetic powder inspection Non-Destructive Testing, comprises the following steps: step 1, is introduced in test container by magnetic flaw detection ink；Step 2, detects and calculates Particle content value；Step 3, carries out concentration availability scoring according to Particle content value；Step 4, detects and calculates magnetic flaw detection ink fluorescent brightness value；Step 5, carries out fluorescent brightness availability scoring according to fluorescent brightness value；Step 6, is added the scoring of concentration availability and the scoring of fluorescent brightness availability, obtains magnetic flaw detection ink usability evaluation.
According to one embodiment of the invention, Particle content value Xn includes 5 grades, respectively: excellent: N2 ＜ Xn ＜ N3；In: N1≤Xn≤N2；In: N3≤Xn≤N4；Difference: Xn ＜ N1；Difference: Xn ＞ N4.Wherein, N1 is technique least concentration threshold value；N2 is low concentration threshold value, and its value isN3 is higher concentration threshold value, and its value isN4 is technique upper concentration threshold value.
According to one embodiment of the invention, magnetic flaw detection ink fluorescent brightness value Xy includes 3 grades, respectively: excellent: Xy ＞ L2；In: L1≤Xy≤L2；Difference: Xy ＜ L1.Wherein, fluorescent brightness threshold value when L1 is to can observe workpiece, defect, fluorescent brightness threshold value when L2 is clearly to observe workpiece, defect.
In technique scheme, the magnetic flaw detection ink usability evaluation apparatus and method for magnetic powder inspection Non-Destructive Testing of the present invention utilize concentration detector Particle content, luminance sensor is utilized to measure the magnetic flaw detection ink fluorescence that ultraviolet source inspires, carry out the state of overall merit magnetic flaw detection ink with both measured values, thus realize the availability of magnetic flaw detection ink is evaluated more accurately.
Accompanying drawing explanation
Fig. 1 is the present invention structural representation for the magnetic flaw detection ink usability evaluation device of magnetic powder inspection Non-Destructive Testing；
Fig. 2 is the present invention flow chart for the magnetic flaw detection ink usability evaluation method of magnetic powder inspection Non-Destructive Testing.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with the accompanying drawings with embodiment.
The core thinking of the present invention is to utilize concentration detector Particle content, utilizes luminance sensor to measure the magnetic flaw detection ink fluorescence that ultraviolet source inspires, carrys out the state of overall merit magnetic flaw detection ink with both measured values.
Therefore, based on above-mentioned core thinking, the present invention discloses a kind of magnetic flaw detection ink usability evaluation device for magnetic powder inspection Non-Destructive Testing, and it mainly includes test container 1, concentration detector 2, ultraviolet source 3, luminance sensor 4, computer 5.The test container 1 of the present invention is as a example by glass tubing, concentration detector 2 is as a example by the induction coil being wrapped on glass tubing, but all it is not limited, test container 1 can be substituted by other transparent vessel, and concentration detector 2 can also use other inductor means, belong to the category of test container of the present invention and concentration detector, below repeat no more.
With reference to Fig. 1, magnetic flaw detection ink is held in test container 1, ultraviolet source 3 irradiates the magnetic flaw detection ink of 1 in test container, luminance sensor 4 detects the fluorescent brightness that magnetic flaw detection ink excites after ultraviolet light irradiates, and fluorescent brightness is sent to computer 5, concentration detector 2 detects Particle content, and sends Particle content to computer 5, and computer 5 carries out magnetic flaw detection ink usability evaluation according to fluorescent brightness and Particle content.
Utilizing said apparatus, another of the present invention is it is important that disclose a kind of magnetic flaw detection ink usability evaluation method for magnetic powder inspection Non-Destructive Testing.
With reference to Fig. 2, the method for the present invention mainly comprises the steps that
Step S1: introduced by magnetic flaw detection ink in test container, i.e. introduces magnetic flaw detection ink in the glass tubing in coil.
Step S2: after flow field is stable, starts concentration detector and detects, and obtain Particle content value Xn by computer calculating.
Step S3: carry out concentration availability scoring Yn according to Particle content value.
In the present invention, Particle content value Xn includes 5 grades, concentration availability scoring Yn then use 1～3 point represent respectively poor, in, excellent three kinds of evaluation results, as shown in the table.
| Condition | Evaluate | Evaluate and divide |
| N2 ＜ Xn ＜ N3 | Excellent | 3 |
| N1≤Xn≤N2 | In | 2 |
| N3≤Xn≤N4 | In | 2 |
| Xn ＜ N1 | Difference | 1 |
| Xn ＞ N4 | Difference | 1 |
In upper table, N1 is technique least concentration threshold value；N2 is low concentration threshold value, and its value isN3 is higher concentration threshold value, and its value isN4 is technique upper concentration threshold value.
Step S4: start ultraviolet source and luminance sensor detects, and be calculated magnetic flaw detection ink fluorescent brightness value Xy by computer.
Step S5: carry out fluorescent brightness availability scoring Yy according to fluorescent brightness value.
In the present invention, magnetic flaw detection ink fluorescent brightness value Xy includes 3 grades, fluorescent brightness availability scoring Yy then use 1～3 point represent respectively poor, in, excellent three kinds of evaluation results, as shown in the table.
| Condition | Evaluate | Evaluate and divide |
| Xy ＞ L2 | Excellent | 3 |
| L1≤Xy≤L2 | In | 2 |
| Xy ＜ L1 | Difference | 1 |
In upper table, fluorescent brightness threshold value when L1 is to can observe workpiece, defect, fluorescent brightness threshold value when L2 is clearly to observe workpiece, defect.
Step S6: concentration availability scoring Yn and fluorescent brightness availability scoring Yy is added, obtains magnetic flaw detection ink usability evaluation Y.
Wherein, Y=Yn+Yy, its result is as shown in the table.
| Condition | Evaluate | Implication |
| Y ＞ 5 | Excellent | In good condition |
| 4≤Y≤5 | In | Still can use |
| Y ＜ 4 | Difference | Unavailable |
Said method is further illustrated below by an embodiment.
Certain workpiece magnetic powder inspection technological requirement Particle content scope is 0.5～3g/L, then N1=0.5, N4=3, N2=1.33, N3=2.17.
Can just observe that the magnetic flaw detection ink fluorescent brightness value that workpiece, defect computer-chronograph collects is 50, then L1=50.
Can the most clearly observe that the magnetic flaw detection ink fluorescent brightness value that workpiece, defect computer-chronograph collects is 100, then L2=100.
The process evaluating the dense state of magnetic flaw detection ink comprises the steps of:
S1: magnetic flaw detection ink is introduced in the glass tubing in coil.
S2: after flow field is stable, starts concentration detector, and computer obtains Particle content value Xn=1.
S3: provide concentration availability scoring Yn=2 according to Particle content value.
S4: start ultraviolet source and luminance sensor, computer obtains fluorescent brightness value Xy=48.
S5: provide fluorescent brightness availability scoring Yy=1 according to fluorescent brightness value.
S6: concentration availability scoring Yn and fluorescent brightness availability scoring Yy is added,
Y=Yn+Yy=3.Therefore, it is poor for providing magnetic flaw detection ink state evaluation, unusable.
Those of ordinary skill in the art will be appreciated that, above embodiment is intended merely to the present invention is described, and it is not used as limitation of the invention, as long as in the spirit of the present invention, change, the modification of embodiment described above all will be fallen in the range of claims of the present invention.
Claims (5)
1. the magnetic flaw detection ink usability evaluation device for magnetic powder inspection Non-Destructive Testing, it is characterised in that including:
Test container, concentration detector, ultraviolet source, luminance sensor, computer；
Holding magnetic flaw detection ink in described test container, the magnetic flaw detection ink in test container described in described ultraviolet source irradiation, described luminance sensor detects the fluorescent brightness that described magnetic flaw detection ink excites after ultraviolet light irradiates, and sends described fluorescent brightness to described computer；
Described concentration detector detection Particle content, and described Particle content is sent to described computer；
Described computer carries out magnetic flaw detection ink usability evaluation according to described fluorescent brightness and described Particle content.
2. the magnetic flaw detection ink usability evaluation device for magnetic powder inspection Non-Destructive Testing as claimed in claim 1, it is characterised in that described test container is glass tubing, and described concentration detector is the induction coil being wrapped on described glass tubing.
3. the magnetic flaw detection ink usability evaluation method for magnetic powder inspection Non-Destructive Testing, it is characterised in that comprise the following steps:
Step 1, introduces magnetic flaw detection ink in test container；
Step 2, detects and calculates Particle content value；
Step 3, carries out concentration availability scoring according to described Particle content value；
Step 4, detects and calculates magnetic flaw detection ink fluorescent brightness value；
Step 5, carries out fluorescent brightness availability scoring according to described fluorescent brightness value；
Step 6, is added the scoring of described concentration availability and the scoring of fluorescent brightness availability, obtains magnetic flaw detection ink usability evaluation.
4. the magnetic flaw detection ink usability evaluation method for magnetic powder inspection Non-Destructive Testing as claimed in claim 3, it is characterised in that:
Described Particle content value Xn includes 5 grades, respectively:
Excellent: N2 ＜ Xn ＜ N3；
In: N1≤Xn≤N2；
In: N3≤Xn≤N4；
Difference: Xn ＜ N1；
Difference: Xn ＞ N4；
Wherein, N1 is technique least concentration threshold value；N2 is low concentration threshold value, and its value isN3 is higher concentration threshold value, and its value isN4 is technique upper concentration threshold value.
5. the magnetic flaw detection ink usability evaluation method for magnetic powder inspection Non-Destructive Testing as claimed in claim 3, it is characterised in that:
Described magnetic flaw detection ink fluorescent brightness value Xy includes 3 grades, respectively:
Excellent: Xy ＞ L2；
In: L1≤Xy≤L2；
Difference: Xy ＜ L1；
Wherein, fluorescent brightness threshold value when L1 is to can observe workpiece, defect, fluorescent brightness threshold value when L2 is clearly to observe workpiece, defect.
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Cited By (3)
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| CN106872915A (en) * | 2017-01-11 | 2017-06-20 | 中车戚墅堰机车车辆工艺研究所有限公司 | Particle content monitoring method during flaw detection |
| CN107271538A (en) * | 2017-05-17 | 2017-10-20 | 西南科技大学 | Full-automatic column ferromagnetic workpiece fluorescentmagnetic particle(powder) nondestructive inspection system |
| RU175148U1 (en) * | 2017-06-06 | 2017-11-23 | Владимир Александрович Чуприн | Installation for magnetic particle inspection of products |
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| RU175148U1 (en) * | 2017-06-06 | 2017-11-23 | Владимир Александрович Чуприн | Installation for magnetic particle inspection of products |
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