CN117664996A - Fluorescent penetration detection method for inner wall surface of long-axis part - Google Patents
Fluorescent penetration detection method for inner wall surface of long-axis part Download PDFInfo
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- CN117664996A CN117664996A CN202311702785.2A CN202311702785A CN117664996A CN 117664996 A CN117664996 A CN 117664996A CN 202311702785 A CN202311702785 A CN 202311702785A CN 117664996 A CN117664996 A CN 117664996A
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- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 230000035515 penetration Effects 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 15
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 13
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims abstract description 5
- 238000004945 emulsification Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 10
- 238000007590 electrostatic spraying Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims 4
- 238000004364 calculation method Methods 0.000 claims 1
- 230000001804 emulsifying effect Effects 0.000 abstract description 5
- 238000011156 evaluation Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a fluorescence penetration detection method for the inner wall surface of a long-axis part, and belongs to the technical field of nondestructive detection. Firstly, respectively spraying fluorescent penetrating agents to the surfaces of the inner walls from two ends of a long shaft which is obliquely placed, and cleaning a long rod water spray gun extending into an inner cavity from two ends of the long shaft; secondly, applying an emulsifying agent to the long shaft, dripping, firstly flushing the inner wall from the two ends of the long shaft by adopting a long rod water spray gun to stop emulsifying the surface of the inner wall, then spraying the outer surface of the long shaft to stop emulsifying the outer surface, and drying the long shaft for no more than 2 minutes; then a long rod negative pressure gun is adopted to blow the developing powder into the long shaft inner cavity, and the surface of the outer wall of the long shaft is covered with the developing powder; finally, the long shaft is horizontally placed, the long shaft is enabled to rotate at a constant speed and circumferentially, the endoscope probes connected with the supporting rods are respectively inserted into the inner cavity of the long shaft at the two ends of the long shaft, and the scanning inspection of axially different depths on the inner wall surface of the whole long shaft is completed by combining axial movement scanning, so that the problem that blind areas exist in a fluorescence penetration detection method of the inner wall surface of long shaft parts is solved.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing, and particularly relates to a fluorescence penetration detection method for the inner wall surface of a long-axis part.
Background
With the continuous improvement of the strength and performance requirements of the aero-engine, the nondestructive testing method of the engine parts also provides higher requirements. In the manufacturing stage and the use stage, the detection range coverage is required to be wider, and the detection sensitivity is higher. The low-pressure turbine shaft is taken as a core component of the aeroengine, is long and thin in appearance, hollow in the interior and is a typical long shaft type part. The low-pressure turbine shaft is subjected to high temperature, high pressure and high stress in the working environment, and any fine defect can cause part failure and influence flight safety. The detection of each part of such a part is therefore not negligible.
In the manufacturing and maintenance process of the low-pressure turbine shaft of the aero-engine, nondestructive detection methods such as fluorescence penetration detection, ultrasonic detection and the like are required to be adopted for quality control. Because the low-pressure turbine shaft is of a slender hollow structure, difficulties exist in applying and removing the penetrant on the inner wall of the low-pressure turbine shaft, and problems such as blind areas of sight exist in defect evaluation, and the quality of the inner wall surface of the part cannot be evaluated through conventional fluorescence penetration detection. Therefore, the fluorescent penetration detection technology for the inner wall surface of the long-axis part is urgently needed to be broken through, and detection and quality control of the inner wall surface of the long-axis part are realized.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a fluorescence penetration detection method for the inner wall surface of a long-axis part, which solves the problem that the fluorescence penetration detection method for the inner wall surface of the long-axis part has a blind area.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the invention discloses a fluorescence penetration detection method for the inner wall surface of a long-axis part, which comprises the following steps:
1) Spraying fluorescent penetrating agents on the surfaces of the inner walls respectively from two ends of the long shafts which are obliquely arranged;
2) Respectively extending the long rod water spray gun into the inner cavity from the two ends of the long shaft for cleaning until no fluorescent penetrating agent flows out;
3) The long shaft is dripped after the emulsifier is applied to the long shaft; on the premise of ensuring the emulsification effect, firstly flushing the inner wall from the two ends of the long shaft by adopting a long rod water spray gun to stop emulsification on the surface of the inner wall, then spraying and washing the outer surface of the long shaft to stop emulsification on the outer surface, wherein the emulsification time is not longer than 2 minutes;
4) Cleaning residual fluorescent penetrating agent on the inner and outer wall surfaces of the long shaft under the monitoring of Sup>A UV-A lamp, and then drying;
5) Blowing the developing powder into the inner cavity of the long shaft by adopting a long-rod negative pressure gun, so that the developing powder covers the surface of the inner wall of the long shaft; then, the surface of the outer wall of the long shaft is covered with developing powder;
6) The long shaft is horizontally rotated at Sup>A uniform speed in the circumferential direction, the endoscope probes connected with the supporting rods are respectively inserted into the long shaft inner cavity at two ends of the long shaft and axially move along the long shaft inner cavity, and the scanning inspection of the circumferential and axial different depths of the inner wall surface of the whole long shaft is completed by utilizing the UV-A light source.
Preferably, in the step 1), the spraying mode is electrostatic spraying, the spraying temperature is 15-38 ℃, the pressure of an electrostatic spray gun is less than or equal to 200KPa, and the spraying lasts for 30 minutes.
Preferably, in step 1), the fluorescent penetrant is a post-emulsification type 4-level sensitive fluorescent penetrant.
Preferably, in the step 1), after the fluorescent penetrant is sprayed, the coverage of the fluorescent penetrant on the inner wall surface of the long shaft is checked by Sup>A hand-held UV-A lamp.
Preferably, in step 2), the cleaning is performed under VU-A lamp monitoring.
Preferably, in step 3), the long axis is impregnated with the emulsifier by dipping, and the long axis is taken out and dropped after the dipping is completed.
Preferably, in step 3), the method for calculating the emulsification time length is as follows: the emulsification time was calculated from the time the long axis was contacted with the emulsifier and the emulsification timer was stopped until all surfaces of the long axis were rinsed.
Further preferably, the spraying time is 50 seconds, the water temperature is 10-32 ℃, and the water pressure is less than or equal to 200KPa.
Preferably, in step 3), the concentration of the emulsifier is between 6% and 8%.
Preferably, in the step 4), the fluorescent penetrant remained on the inner and outer surfaces of the long shaft is cleaned by using a long rod water spray gun.
Preferably, in the step 4), the long-axis surface water is removed by compressed air after cleaning.
Preferably, in the step 5), the blowing pressure of the developing powder is less than or equal to 200KPa until the developing powder covers the surface of the inner wall of the long shaft, and the blowing is stopped.
Preferably, in the step 5), the powder spraying cabinet is used for spraying the powder so that the developing powder covers the surface of the outer wall of the long shaft.
Further preferably, in step 5), the powder spraying time is 3 seconds, after which the development is stopped for 15 minutes in a development cabinet.
Preferably, in step 6), the width of each circumferential scanning area of the endoscope probe is 15mm and the axial movement length is 10mm.
Preferably, in the step 6), the fluorescent display observed by the endoscope probe is evaluated after being dipped in an acetone solution by a long-rod cotton swab, and the VU-A and white light source evaluation display is switched when the evaluation is performed.
Compared with the prior art, the invention has the following beneficial effects:
the fluorescent penetration detection method for the inner wall surface of the long shaft part provided by the invention has the advantages that firstly, the long shaft is obliquely arranged, so that the inner wall of the long shaft can be completely covered by the fluorescent penetrating agent, the sedimentation and waste of the penetrating agent in the inner cavity of the long shaft are reduced, and the removal of the long shaft inner cavity effusion is accelerated; secondly, fluorescent penetrating agents are respectively applied to the inner wall from two ends of the long shaft, so that uniformity and integrity of the applied thickness can be ensured; thirdly, the inner walls are respectively washed from the two ends of the long shaft by adopting a long rod water spray gun before the emulsification time is finished, and the outer surface of the long shaft is sprayed by using an automatic water spray tank after the emulsification is finished, so that the emulsification time of the inner wall of the long shaft can be more accurately controlled, the cleaning effect of the inner wall of the long shaft can be more strictly controlled, and the over-emulsification and the cleaning deficiency are avoided; fourthly, a long rod negative pressure gun is adopted to blow the developing powder into the long shaft inner cavity, so that the inner wall of the long shaft can be ensured to be covered by the developing powder completely; fifthly, in the process of uniform circumferential rotation of the long shaft, the endoscope probe stretches into the long shaft to axially move, 100% UV-A scanning detection of the surface of the inner wall of the long shaft can be realized, and the stability and coverage integrity of the detection process are controlled. The method adopts special detection tools and tools (including but not limited to an electrostatic spraying gun, a long rod water spray gun, an endoscope, a feeding tool, a detection tool and the like), and on one hand, forms a special process method of the steps of applying, removing, developing and the like of the penetrating agent on the inner wall surface of the long shaft type part; on the other hand, the observation and evaluation method for the fluorescent display of the inner wall of the long-axis part is determined, and the comprehensive fluorescent penetration detection of the inner wall surface of the long-axis part can be realized, so that the problem of detection blind areas existing on the inner wall surface of the long-axis part all the time can be solved.
Furthermore, the fluorescent penetrant is applied by adopting an electrostatic spraying mode, so that the fluorescent penetrant can be further prevented from being deposited on the inner wall of the long shaft.
Drawings
FIG. 1 is a schematic illustration of a low pressure turbine shaft feed mounting;
FIG. 2 is a cross-sectional view of the low pressure turbine shaft;
FIG. 3 is a schematic flow chart of a step emulsification method;
FIG. 4 is a schematic view of the detection of the inner wall of the low pressure turbine shaft.
Wherein, 1-low pressure turbine shaft; 2-feeding a tool; 3-an endoscope; 4-supporting rods; 5-an endoscope probe; 6-detecting a tool; 6-1-active bearings; 6-2-driven bearings; 6-3-driving motor.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a fluorescence penetration detection method for the inner wall surface of a long-axis part, which comprises the following specific steps:
(1) And (5) feeding. In order to avoid liquid deposition at the inner cavity part of the long shaft inner cavity in the processes of permeation, cleaning, emulsification and drying and accelerate the removal of liquid deposition in the long shaft inner cavity, the long shaft is obliquely arranged on the feeding tool 2, the long shaft is carried out in steps (2) - (5) along with the feeding tool 2, the feeding tool 2 is provided with a certain gradient, and the long shaft 1 is obliquely arranged on the feeding tool 2.
(2) Applying a penetrant. In order to avoid the accumulation of the fluorescent penetrant on the inner wall of the long shaft, the fluorescent penetrant is applied in an electrostatic spraying mode. The electrostatic spraying application mode is to spray and apply fluorescent penetrating agent to the inner wall surfaces from two ends of the long shaft respectively, then check the covering condition of the fluorescent penetrating agent on the inner wall surfaces of the long shaft through Sup>A handheld UV-A lamp until the fluorescent penetrating agent completely covers the inner wall surfaces of the long shaft, and then carry out the next step.
(3) Removing the penetrant. The steps of "removing the penetrant" include pre-cleaning, emulsifying, and final cleaning.
a) And (5) pre-cleaning. A long rod water spray gun is adopted to extend into the long shaft inner cavity from the two ends of the long shaft, and the surface of the inner wall of the long shaft is manually cleaned, so that most of redundant fluorescent penetrant on the surface of the inner wall of the long shaft is removed; and then, automatically spraying and washing the outer surface of the long shaft by adopting an automatic water spraying and washing tank.
b) And (5) emulsifying. The emulsification is used as a key step of fluorescence penetration detection, the emulsification time needs to be strictly controlled, the emulsification time is calculated from the time that the long shaft contacts the emulsifying agent, and the emulsification timing is stopped when the long shaft is washed by clean water on all surfaces. The invention adopts a step-by-step emulsification method: applying an emulsifying agent to the long shaft by adopting an impregnation method, and taking out the long shaft for dripping after the impregnation is finished; on the premise of ensuring the emulsification effect, the long rod water spray gun is firstly adopted to wash the inner wall from the two ends of the long shaft, so that the surface of the inner wall stops emulsifying, then the outer surface of the long shaft is sprayed and washed, the outer surface emulsification is stopped, and the emulsification time is not longer than 2 minutes, thereby realizing the simultaneous stopping of the emulsification of the whole inner surface and the whole outer surface of the long shaft.
c) And finally cleaning. And finally cleaning the residual fluorescent penetrating agent on the surfaces of the inner wall and the outer wall of the long shaft by adopting Sup>A long-rod water spray gun under the monitoring of Sup>A UV-A lamp, wherein the cleaning method adopts manual cleaning.
(4) And (3) drying: the long shaft is dried for 15 to 20 minutes at the temperature of between 60 and 70 ℃.
(5) Developing: blowing the developing powder into the inner cavity of the long shaft by adopting a long-rod negative pressure gun, so that the developing powder covers the surface of the inner wall of the long shaft; and then the powder spraying cabinet is used for spraying powder to cover the surface of the outer wall of the long shaft, so that the aim of developing all the surfaces of the inner wall and the outer wall of the long shaft is fulfilled.
(6) And (3) checking: the long shaft is horizontally placed on the detection tool 6, the long shaft is enabled to rotate circumferentially at a constant speed through the detection tool 6, and the long shaft is detected by using the endoscope 3 from two ends of the long shaft. The endoscope probe 5 is arranged on the supporting rod 4 and inserted into the inner cavity of the long shaft, the UV-A light source of the endoscope 3 is utilized to complete the circumferential scanning inspection of the inner wall surface of the long shaft, then the endoscope probe 5 moves axially along the inner cavity of the long shaft to complete the scanning inspection of the endoscope probe 5 to different depths of the inner wall surface of the long shaft, thereby realizing the gradual comprehensive inspection of the inner wall surface of the long shaft.
Wherein, detection frock 6 internally mounted has driving motor 6-3, and the top level is provided with initiative bearing 6-1 and driven bearing 6-2, and initiative bearing 6-1 and driven bearing 6-2 are used for supporting the major axis and drive major axis circumference rotation. The working principle of the detection tool 6 is as follows: the driving motor 6-3 provides power to drive the driving bearing 6-1 to rotate at a constant speed in the circumferential direction, the driving bearing 6-1 supports and drives the long shaft to rotate at a constant speed in the circumferential direction, and finally the long shaft drives the driven bearing 6-2 to rotate under the support of the driven bearing 6-2.
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
Taking a low-pressure turbine shaft of an aero-engine as an example, detecting the surface of the inner wall of a long-shaft part by adopting a fluorescence penetration detection method, and the method comprises the following steps of:
(1) And (5) feeding. Referring to fig. 1, the low-pressure turbine shaft 1 shown in fig. 2 is placed obliquely on a loading fixture 2 having a gradient of 3 degrees, and the low-pressure turbine shaft 1 is subjected to steps (2) to (5) together with the loading fixture 2.
(2) Applying a penetrant. And (3) respectively spraying the fluorescent penetrant RC-77 with emulsion type 4-level sensitivity on the inner wall surface from the two ends of the low-pressure turbine shaft 1 by using an electrostatic spray gun at the temperature of 15-38 ℃, keeping the electrostatic spray gun at the pressure of less than or equal to 200 KPSup>A for 30 minutes after spraying, and then checking the coverage condition of the fluorescent penetrant on the inner wall surface of the low-pressure turbine shaft 1 by using Sup>A handheld UV-A lamp.
(3) Removing the penetrant. a) Pre-cleaning: and (3) under the monitoring of a VU-A lamp, a long rod water spray gun is adopted to extend into the inner cavity of the low-pressure turbine shaft 1 from the two ends of the low-pressure turbine shaft 1, the inner wall surface of the low-pressure turbine shaft 1 is manually cleaned, the water cleaning time is as short as possible, and if the inner cavity does not have a fluorescent penetrating agent which can be obviously removed, the flushing is stopped. And then, adopting an automatic spray tank to automatically spray the outer wall surface of the low-pressure turbine shaft 1, wherein the spray time is 50 seconds, the water temperature is 10-32 ℃, and the water pressure is less than or equal to 200KPa. b) Emulsification: the emulsification time is calculated from the time when the low-pressure turbine shaft 1 contacts the emulsifier, and the emulsification time is not more than 120 seconds after the emulsification time is stopped when the clean water washes all surfaces of the low-pressure turbine shaft 1. See fig. 3 for a specific emulsification step. Immersing the low-pressure turbine shaft 1 into an emulsifier ER-83A with the concentration of 6% -8% when the emulsification time is 0 seconds, and taking out the low-pressure turbine shaft 1 for dripping when the emulsification time is 20 seconds; when the emulsification time is 90 seconds, the inner wall is washed from the two ends of the low-pressure turbine shaft 1 by using a long pipe spray gun so as to stop the emulsification of the surface of the inner wall; and when the emulsification time is 120 seconds, the outer wall surface of the low-pressure turbine shaft 1 is sprayed and washed by an automatic spray tank, and the spraying and washing time is 50 seconds, so that the whole inner and outer surfaces of the low-pressure turbine shaft 1 are stopped from being emulsified. c) And (3) final cleaning: and under the monitoring of Sup>A UV-A lamp, sup>A long rod water spray gun is adopted to carry out final cleaning on the residual fluorescent penetrating agent on the inner and outer wall surfaces of the low-pressure turbine shaft 1 under the conditions that the water temperature is 10-32 ℃ and the water pressure is less than or equal to 200 KPSup>A until the fluorescent penetrating agent on the surface of the low-pressure turbine shaft 1 is completely removed, and then the flushing is stopped. Then, the surface water accumulation of the low-pressure turbine shaft 1 is removed by adopting compressed air, the air pressure is less than or equal to 100KPa, and the inner cavity water accumulation is removed by using a dust collector.
(4) And (3) drying: and (3) putting the low-pressure turbine shaft 1 into a hot air circulation oven for drying, wherein the temperature of the oven is 60-70 ℃ and the drying time is 15-20 minutes.
(5) Developing: blowing the developing powder D-90G into the inner cavity of the low-pressure turbine shaft 1 by adopting a long-rod negative pressure gun, so that the developing powder D-90G covers the inner wall surface of the low-pressure turbine shaft 1, the blowing pressure is less than or equal to 200KPa, the blowing time is 2 seconds, and visual inspection ensures that the developing powder covers the inner wall surface of the low-pressure turbine shaft 1; and then, adopting a powder spraying cabinet powder explosion mode to enable the developing powder D-90G to cover the surface of the outer wall of the low-pressure turbine shaft 1, spraying powder for 3 seconds, and developing and staying in the developing cabinet for 15 minutes, thereby achieving the purpose of developing all the surfaces of the inner wall and the outer wall of the low-pressure turbine shaft 1.
(6) And (3) checking: the inner walls of the low-pressure turbine shaft 1 were inspected from both ends thereof, respectively, in the manner shown in fig. 4. The low-pressure turbine shaft 1 is horizontally placed on a detection tool 6, and the detection tool 6 enables the low-pressure turbine shaft 1 to circumferentially rotate at a constant speed, and the rotating speed is 6 revolutions per minute. The endoscope probe 5 is installed on the support rod 4 and inserted into the inner cavity of the low-pressure turbine shaft 1, the circumferential scanning inspection of the inner wall surface of the low-pressure turbine shaft 1 is completed by utilizing the UV-A light source of the endoscope 3, the width of each circumferential scanning areSup>A of the endoscope probe 5 is 15mm, then the endoscope probe 5 moves axially along the inner cavity of the low-pressure turbine shaft 1 for 10mm each time, and the scanning inspection of the endoscope probe 5 on the inner wall surface of the low-pressure turbine shaft 1 along different depths in the axial direction can be completed, so that the gradual comprehensive inspection of the inner wall surface of the low-pressure turbine shaft 1 is realized. The fluorescence observed by the endoscope 3 is displayed, and the evaluation is performed after the acetone solution is dipped and wiped by the long-rod cotton swab, and the evaluation display of the VU-A and the white light source can be switched during the evaluation.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A fluorescence penetration detection method for the inner wall surface of a long-axis part is characterized by comprising the following steps:
1) Spraying fluorescent penetrating agents on the surfaces of the inner walls respectively from two ends of the long shafts which are obliquely arranged;
2) Respectively extending the long rod water spray gun into the inner cavity from the two ends of the long shaft for cleaning until no fluorescent penetrating agent flows out;
3) The long shaft is dripped after the emulsifier is applied to the long shaft; on the premise of ensuring the emulsification effect, firstly flushing the inner wall from the two ends of the long shaft by adopting a long rod water spray gun to stop emulsification on the surface of the inner wall, then spraying and washing the outer surface of the long shaft to stop emulsification on the outer surface, wherein the emulsification time is not longer than 2 minutes;
4) Cleaning residual fluorescent penetrating agent on the inner and outer wall surfaces of the long shaft under the monitoring of Sup>A UV-A lamp, and then drying;
5) Blowing the developing powder into the inner cavity of the long shaft by adopting a long-rod negative pressure gun, so that the developing powder covers the surface of the inner wall of the long shaft; then, the surface of the outer wall of the long shaft is covered with developing powder;
6) The long shaft is horizontally rotated at Sup>A uniform speed in the circumferential direction, the endoscope probes (5) connected with the supporting rods (4) are respectively inserted into the long shaft inner cavity at the two ends of the long shaft and axially move along the long shaft inner cavity, and the UV-A light source is utilized to complete scanning inspection of the circumferential and axial different depths of the surface of the inner wall of the whole long shaft.
2. The fluorescence penetration detection method for the inner wall surface of the long shaft part according to claim 1, wherein in the step 1), the spraying mode is electrostatic spraying, the spraying temperature is 15-38 ℃, the pressure of an electrostatic spray gun is less than or equal to 200KPa, and the long shaft part stays for 30 minutes after spraying.
3. The method for detecting fluorescent penetration of an inner wall surface of a long shaft-like member according to claim 1, wherein in step 3), an emulsifying agent is applied to the long shaft by dipping, and the long shaft is taken out after the dipping is completed and dropped.
4. The fluorescence penetration detection method for the inner wall surface of the long-axis part according to claim 1, wherein in the step 3), the calculation method of the emulsification time length is as follows: the emulsification time was calculated from the time the long axis was contacted with the emulsifier and the emulsification timer was stopped until all surfaces of the long axis were rinsed.
5. The fluorescence penetration testing method for the inner wall surface of the long shaft part according to claim 1, wherein in the step 3), the concentration of the emulsifying agent is 6% -8%.
6. The fluorescence penetration testing method for the inner wall surface of the long shaft part according to claim 1, wherein in the step 4), a long rod water spray gun is used for cleaning the residual fluorescence penetrating agent on the inner wall surface and the outer wall surface of the long shaft.
7. The fluorescence penetration detection method for the inner wall surface of the long-axis part according to claim 1, wherein in the step 4), water is accumulated on the surface of the long-axis part after cleaning by using compressed air.
8. The fluorescence penetration detecting method of the inner wall surface of the long shaft part according to claim 1, wherein in the step 5), the blowing pressure of the developing powder is less than or equal to 200KPa until the developing powder covers the inner wall surface of the long shaft, and the blowing is stopped.
9. The fluorescence penetration testing method of the inner wall surface of the long shaft part according to claim 1, wherein in the step 5), the powder spraying cabinet is used for spraying the powder to cover the outer wall surface of the long shaft.
10. The fluorescence penetration testing method for the inner wall surface of the long shaft type part according to claim 1, wherein in the step 6), the width of each circumferential scanning area of the endoscope probe (5) is 15mm, and the axial moving length is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311702785.2A CN117664996A (en) | 2023-12-12 | 2023-12-12 | Fluorescent penetration detection method for inner wall surface of long-axis part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311702785.2A CN117664996A (en) | 2023-12-12 | 2023-12-12 | Fluorescent penetration detection method for inner wall surface of long-axis part |
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| Publication Number | Publication Date |
|---|---|
| CN117664996A true CN117664996A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311702785.2A Pending CN117664996A (en) | 2023-12-12 | 2023-12-12 | Fluorescent penetration detection method for inner wall surface of long-axis part |
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| Country | Link |
|---|---|
| CN (1) | CN117664996A (en) |
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- 2023-12-12 CN CN202311702785.2A patent/CN117664996A/en active Pending
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