CN102706890A - Detection device and detection method of honeycomb brazing part - Google Patents
Detection device and detection method of honeycomb brazing part Download PDFInfo
- Publication number
- CN102706890A CN102706890A CN201210193016XA CN201210193016A CN102706890A CN 102706890 A CN102706890 A CN 102706890A CN 201210193016X A CN201210193016X A CN 201210193016XA CN 201210193016 A CN201210193016 A CN 201210193016A CN 102706890 A CN102706890 A CN 102706890A
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- pipeline
- honeycomb
- brazing member
- honeycomb brazing
- solution tank
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- 238000005219 brazing Methods 0.000 title claims abstract description 95
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 21
- 239000003960 organic solvent Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 18
- 210000005056 cell body Anatomy 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract 2
- 238000005192 partition Methods 0.000 abstract 2
- 239000000428 dust Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a detection device and detection method of a honeycomb brazing part. The detection device of the honeycomb brazing part comprises a solution box, a pump, a solution spray gun, a solution tank, a plurality of pipelines, stop valves and a dripping frame, wherein the stop valves are arranged on the plurality of pipelines. The detection method of the honeycomb brazing part comprises the following steps of: 1, placing the honeycomb brazing part on a partition groove, fully injecting an organic solvent into the solution tank, and heating the organic solvent; 2, taking out the honeycomb brazing part, placing on the dripping frame, then placing the dripping frame on the partition groove of the solution tank, and injecting the organic solvent sprayed by the solution spray gun into honeycomb holes of the honeycomb brazing part; and 3, observing a welding seam of the honeycomb brazing part. In the invention, the organic solvent is heated by utilizing the detection device of the honeycomb brazing part so that air inside the honeycomb holes exhausts, thereby enhancing the detection accuracy; the dripping frame is adopted to place the honeycomb brazing part, thereby saving the labor force; and a solution with pressure is injected into the tiny honeycomb holes, thereby reducing the operating time and enhancing the operating accuracy.
Description
Technical field
The present invention relates to the pick-up unit field, especially, relate to a kind of pick-up unit of honeycomb brazing member.In addition, the invention still further relates to a kind of detection method that comprises the pick-up unit of above-mentioned honeycomb brazing member.
Background technology
The honeycomb brazing member is because the hole of honeycomb is less, when tested in the welding position, is difficult to observe out whether have an obvious defects through naked eyes Direct observation welding position, need adopt special method when therefore the welding position of honeycomb brazing member being detected.Former welding position to the honeycomb brazing member adopts freon to do detection agent when detecting.During inspection, at first on honeycomb hole, be coated with the last layer chalk dust; One section of honeycomb brazing member that will scribble chalk dust then is immersed in the freon solution; Soak and it to be taken the liquid level top after a few minutes and detect by an unaided eye, have in the immersion section of chalk dust if the immersion effect of similar paper just explains that there is seepage in this zone.
In whole testing process; Generally all take the honeycomb brazing member with hand; Partial test spare is raised check because volume is big or weight is heavier and inconvenient with it, and honeycomb hole is smaller yet in actual use; Its diameter has only 0.5mm～1mm, thereby causes chalk dust to be not easy from the hole, to remove.In addition, need use freon solution during detection, and freon there is serious pollution to atmospheric envelope.
Summary of the invention
The object of the invention is to provide a kind of pick-up unit and detection method of honeycomb brazing member, to improve the efficient that detects, the technical matters that reduces the error that detects.
For realizing above-mentioned purpose, according to an aspect of the present invention, a kind of pick-up unit of honeycomb brazing member is provided; Comprise liquor box, pump, solution spray gun, solution tank, connection liquor box, pump, solution spray gun, solution tank many pipelines, be installed on the many pipelines stop valve and the drippage frame; Wherein, pipeline comprises first pipeline, second pipeline and the 5th pipeline, and solution tank comprises cell body and separate slot; Separate slot is nested in the cell body; First pipeline can connect liquor box and pump with opening and closing, and second pipeline can connect pump and solution spray gun with opening and closing, and the 5th pipeline can connect pump and solution tank with opening and closing; The drippage frame is placed on the separate slot, and honeycomb brazing member to be detected is placed on the drippage frame.
Further, stop valve comprises first stop valve and second stop valve, and first stop valve is installed on first pipeline, and second stop valve is installed on second pipeline.
Further, solution tank also comprises tap hole, inlet and liquid return hole, and tap hole is arranged on the bottom surface of solution tank, and inlet is arranged on the side of solution tank, and liquid return hole is arranged on the side of solution tank.
Further, the pick-up unit of honeycomb brazing member also comprises solenoid valve, and pipeline comprises the 3rd pipeline, and stop valve comprises first stop valve and the 3rd stop valve; Liquid return hole communicates with first end of the 3rd pipeline, the 3rd piping erection the 3rd stop valve, and second end of the 3rd stop valve links to each other with pump; Inlet communicates with first end of the 5th pipeline, on the 5th pipeline solenoid valve is installed, and second end of the 5th pipeline communicates with second end of second pipeline.
Further, the pick-up unit of honeycomb brazing member also comprises surplus valve, and pipeline also comprises the 4th pipeline, and first end of the 4th pipeline communicates with inlet, on the 4th pipeline surplus valve is installed, and second end of the 4th pipeline communicates with first end of second pipeline.
Further, solution tank also comprises well heater, and well heater is installed between the bottom surface of separate slot and cell body.
Further, the lower end level of drippage frame, the upper surface of drippage frame is the inclined-plane, the inclined-plane becomes 30 with surface level.~45。Angle.
According to a further aspect in the invention, a kind of detection method of honeycomb brazing member is provided also, has may further comprise the steps: step 1: the honeycomb brazing member is placed on the separate slot, with filling with organic solvent in the solution tank, and the heating organic solvent; Step 2: the taking-up of honeycomb brazing member is placed on the drippage frame, will drips frame then and be placed on the separate slot of solution tank, solution spray gun ejection organic solvent is injected in the honeycomb hole of honeycomb brazing member; Step 3: observe the weld seam of honeycomb brazing member, whether exist with the weld seam of judging the honeycomb brazing member and leak the weldering phenomenon.
Further, also comprise step zero before the step 1: the weld seam of cleaning honeycomb brazing member.
Further, step 3 utilizes magnifier that the weld seam of honeycomb brazing member is observed.
The present invention has following beneficial effect: the pick-up unit of honeycomb brazing member of the present invention is designed to simple pipeline loop, and is simple in structure, easy to operate, adopts the drippage frame to place the honeycomb brazing member, can save the labour.
The detection method of honeycomb brazing member of the present invention is utilized the pick-up unit of honeycomb brazing member, and the heating organic solvent makes the air in the honeycomb hole discharge, to improve the accuracy that detects; And the solution that will have pressure is injected in the tiny honeycomb hole, can reduce the time of operation and improve the accuracy of operation.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the detection system schematic diagram of pick-up unit of the honeycomb brazing member of the preferred embodiment of the present invention;
Fig. 2 is the structural representation of solution tank of pick-up unit of the honeycomb brazing member of the preferred embodiment of the present invention;
Fig. 3 is a schematic side view shown in Figure 2;
Fig. 4 is the structural representation of drippage frame of pick-up unit of the honeycomb brazing member of the preferred embodiment of the present invention; And
Fig. 5 is the process flow diagram of detection method of pick-up unit of the honeycomb brazing member of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 1; The preferred embodiments of the present invention provide a kind of pick-up unit of honeycomb brazing member; Whether be used for existing the leakage weldering to detect to the weld seam of honeycomb brazing member, the pick-up unit of honeycomb brazing member of the present invention comprises liquor box 1, pump 4, solution spray gun 7, solution tank 11, connects many pipelines of liquor box 1, pump 4, solution spray gun 7, solution tank 11 and be installed in the stop valve on the many pipelines.
The liquor box 1 of the pick-up unit of honeycomb brazing member of the present invention is used for containing the liquid of required use.First end of first pipeline 2 communicates with liquor box 1; First stop valve 3 is installed on first pipeline 2; To control the unimpeded of first pipeline 2 and sealing, second end of first pipeline 2 links to each other with first end of pump 4, opens pump 4 and can the solution in the liquor box 1 be extracted out through first pipeline 2.First end of second pipeline 5 links to each other with second end of pump 4; Make the solution of extracting out from first pipeline 2 flow to second pipeline 5; Second stop valve 8 is installed on second pipeline 5; With the unimpeded of second end of controlling second pipeline 5 with break off, the second end solution spray gun 7 of second pipeline 5 communicates, and the solution in second pipeline 5 can be from 7 ejections of solution spray gun.Preferably, second end of second pipeline 5 also is equipped with throttling valve 6, to regulate the flow on second pipeline 5.
Please combine referring to Fig. 2 and Fig. 3, solution tank 11 is for being used for the locking device of holding liquid, and solution tank 11 comprises cell body 110 and is installed in mobilizable groove lid 116 on the cell body 110, to prevent institute's holding liquid volatilization in the solution tank 11.Preferably, groove lid 116 links to each other with counterweight 115 through pull bar, covers 116 through operation counterweight 115 with the opening and closing groove.The inside of solution tank 11 also is equipped with a separate slot 111, and separate slot 111 is similar " U " shape groove structure, is nested in the cell body 110, between the bottom surface of separate slot 111 and cell body 110 well heater 112 is installed, and well heater 112 can be with the liquid heat in the solution tank 11.Preferably, the bottom surface of solution tank 11 is provided with tap hole 112, and the port of tap hole 112 is provided with a switch, when needs cleaning solution groove 11, opens switch, can the liquid of solution tank 11 be put totally, and solution tank 11 is cleaned.The side of solution tank 11 is provided with a liquid return hole 114 near the place, bottom surface, and preferably, liquid return hole 114 links to each other with second end of first pipeline 2 through first end of the 3rd pipeline 9, and second end of the 3rd pipeline 9 communicates with pump 4 simultaneously.One the 3rd stop valve 10 also is installed, to control the unimpeded of the 3rd pipeline 9 and sealing on the 3rd pipeline 9.When closing first stop valve 3; When opening the 3rd stop valve 10, open pump 4, can be with the liquid in the solution tank 11 through the 3rd pipeline 9, second pipeline 5, throttling valve 6, second stop valve 8 and 7 ejections of solution spray gun; Can also realize the recycle of solution like this, practice thrift solution.
The side of solution tank 11 also is provided with an inlet 113 near the upper end surface; Inlet 113 communicates with first end of the 4th pipeline 12; Second end that surplus valve 13, the four pipelines 12 are installed on the 4th pipeline 12 communicates with first end of second pipeline 5, with the pressure and the flow of regulating system.Preferably, inlet 113 also communicates with first end of the 5th pipeline 14, and second end that solenoid valve 15, the five pipelines 14 are installed on the 5th pipeline 14 communicates with second end of second pipeline 5.
See also Fig. 4, drippage frame 16 can be installed on the separate slot 111 of solution tank 11, drippage frame 16 is used for laying the honeycomb brazing member.The lower end of drippage frame 16 is horizontally disposed with, and preferably, the upper surface of drippage frame 16 is inclined-plane 161.Inclined-plane 161 is provided with threaded hole, when being placed on the honeycomb brazing member 161 last times of inclined-plane, can pass through bolt honeycomb brazing member.Preferably, inclined-plane 161 becomes 30 ° ~ 45 ° angles with surface level, so that be placed on 161 last times of inclined-plane when honeycomb brazing member to be detected, the liquid in the honeycomb hole can have part to be retained in the honeycomb hole.
The pick-up unit of honeycomb brazing member of the present invention is designed to simple pipeline loop, and is simple in structure, easy to operate, adopts drippage frame 16 to place honeycomb brazing member to be detected, can save the labour.
Please combine referring to Fig. 5, use the detection method of the pick-up unit of above-mentioned honeycomb brazing member specifically to comprise following step:
Step S0: trimming;
Preferably, utilize high pressure draught that the weld seam of honeycomb brazing member is cleared up, utilize powerful air-flow that the honeycomb hole of honeycomb brazing member or the impurity of face of weld are cleaned out.Usually, the pressure of used air pressure is 0.2MPa ~ 0.3MPa.In other embodiment, can also utilize other mode that the honeycomb hole of honeycomb brazing member or the impurity of face of weld are cleaned out, like cleaning tool with hairbrush or other.
Step S1: the honeycomb brazing member is placed on the separate slot 111, fills with organic solvent in the solution tank 11, and heat this organic solvent;
The solution that liquor box 1 is contained is organic solvent, and as the detection agent of honeycomb brazing member, organic solvent can be cleared up the grease on honeycomb brazing member surface on the other hand with on the one hand.Preferably, the solution contained of liquor box 1 is acetone soln.
Close the 3rd stop valve 10 and second stop valve 8 of the pick-up unit of honeycomb brazing member; Open first stop valve 3; Regulate solenoid valve 15 simultaneously, make solenoid valve 15 be in unimpeded state, priming pump 4; At this moment solution enters into solution tank 11 from liquor box 1 through first pipeline 2, first end of second pipeline 5, the 5th pipeline 14, with filling with organic solvent in the solution tank 11.
The honeycomb brazing member is placed on the separate slot 111 of solution tank 11, heater 112 is heated to the solution in the solution tank 11 about 30 ℃ ~ 50 ℃, the gas in honeycomb brazing member honeycomb hole or the weld seam is discharged the accuracy when detecting to improve.
Step S2: the honeycomb brazing member taken out from solution tank 11 be placed on the drippage frame 16, will drip frame 16 then and be placed on the separate slot 111 of solution tank 11, solution spray gun 7 sprays organic solvents and is injected in the honeycomb hole of honeycomb brazing member;
The honeycomb brazing member is taken out, try not during taking-up the upset of honeycomb brazing member is all poured out to prevent the organic solvent in the honeycomb brazing member honeycomb hole.Drippage frame 16 is placed on the separate slot 111 of solution tank 11, then the honeycomb brazing member is connected on the inclined-plane 161 of drippage frame 16 through bolt,, make the part solution of honeycomb brazing member honeycomb hole or leakages flow away because the inclination of honeycomb brazing member is placed.Close the 3rd stop valve 10; Make solenoid valve 15 be in off-state simultaneously; Open first stop valve 3 and second stop valve 8, priming pump 4, make organic solvent through first pipeline 2, second pipeline 5 through 7 ejections of solution spray gun; Regulate throttling valve 6, make that the pressure of the solution that solution spray gun 7 sprays is 0.2MPa ~ 0.3MPa.The liquid of solution spray gun 7 ejections is filled with honeycomb hole, and remaining liquid can flow in the solution tank 11, to practice thrift solution, saves resource.
Step S3: observe the weld seam of honeycomb brazing member, whether exist with the weld seam of judging the honeycomb brazing member and leak the weldering phenomenon.
Preferably, because the weld seam of honeycomb brazing member is less, available magnifier is observed the weld seam of honeycomb brazing member, improves the accuracy of observing.Bright than other zones when viewed a certain zone, and in the form of sheets, the weld seam of then representing the honeycomb brazing member that this is regional exists and leaks weldering.
The detection method of honeycomb brazing member of the present invention is utilized the pick-up unit of honeycomb brazing member, and the heating organic solvent makes the air in the honeycomb hole discharge, to improve the accuracy that detects; And the solution that will have pressure is injected in the tiny honeycomb hole, can reduce the time of operation and improve the accuracy of operation.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the pick-up unit of a honeycomb brazing member; It is characterized in that; Comprise: liquor box (1), pump (4), solution spray gun (7), solution tank (11), connect said liquor box (1), said pump (4), said solution spray gun (7), said solution tank (11) many pipelines, be installed on the said many pipelines stop valve and the drippage frame (16); Wherein
Said pipeline comprises first pipeline (2), second pipeline (5) and the 5th pipeline (14),
Said solution tank (11) comprises cell body (110) and separate slot (111), and said separate slot (111) is nested in the said cell body (110),
Said first pipeline (2) can connect said liquor box (1) and said pump (4) with opening and closing; Second pipeline (5) can connect said pump (4) and said solution spray gun (7) with opening and closing, and said the 5th pipeline (14) can connect said pump (4) and said solution tank (11) with opening and closing;
Said drippage frame (16) is placed on the said separate slot (111), and said honeycomb brazing member to be detected is placed on the said drippage frame (16).
2. the pick-up unit of honeycomb brazing member according to claim 1; It is characterized in that; Said stop valve comprises first stop valve (3) and second stop valve (8); Said first stop valve (3) is installed on said first pipeline (2), and said second stop valve (8) is installed on said second pipeline (5).
3. the pick-up unit of honeycomb brazing member according to claim 1; It is characterized in that; Said solution tank (11) also comprises tap hole (112), inlet (113) and liquid return hole (114); Said tap hole (112) is arranged on the bottom surface of said solution tank (11), and said inlet (113) is arranged on the side of said solution tank (11), and said liquid return hole (114) is arranged on the side of said solution tank (11).
4. the pick-up unit of honeycomb brazing member according to claim 3; It is characterized in that; The pick-up unit of said honeycomb brazing member also comprises solenoid valve (15), and said pipeline comprises the 3rd pipeline (9), and said stop valve comprises first stop valve (3) and the 3rd stop valve (10); Said liquid return hole (10) communicates with first end of said the 3rd pipeline (9), and said the 3rd pipeline (9) is installed the 3rd stop valve (10), and second end of the 3rd stop valve (10) links to each other with said pump (4); Said inlet (113) communicates with first end of said the 5th pipeline (14), and said the 5th pipeline (14) is gone up said solenoid valve (15) is installed, and second end of said the 5th pipeline (14) communicates with second end of said second pipeline (5).
5. the pick-up unit of honeycomb brazing member according to claim 4; It is characterized in that; The pick-up unit of said honeycomb brazing member also comprises surplus valve (13), and said pipeline also comprises the 4th pipeline (12), and first end of said the 4th pipeline (12) communicates with said inlet (113); Said the 4th pipeline (12) is gone up said surplus valve (13) is installed, and second end of said the 4th pipeline (12) communicates with first end of said second pipeline (5).
6. the pick-up unit of honeycomb brazing member according to claim 1 is characterized in that, said solution tank (11) also comprises well heater (112), and said well heater (112) is installed between the bottom surface of said separate slot (111) and said cell body (110).
7. the pick-up unit of honeycomb brazing member according to claim 1 is characterized in that, the lower end level of said drippage frame (16), and the upper surface of said drippage frame (16) is inclined-plane (161), said inclined-plane (161) become 30 ° ~ 45 ° angles with surface level.
8. the detection method of a honeycomb brazing member is characterized in that, the pick-up unit of any one honeycomb brazing member of said claim 1 to 7 is detected, and may further comprise the steps:
Step S1: said honeycomb brazing member is placed on the said separate slot (111), with filling with organic solvent in the said solution tank (11), and the heating organic solvent;
Step S2: said honeycomb brazing member taking-up is placed on the said drippage frame (16); Then said drippage frame (16) is placed on the said separate slot (111) of said solution tank (11), said solution spray gun (7) ejection organic solvent is injected in the honeycomb hole of said honeycomb brazing member;
Step S3: observe the weld seam of said honeycomb brazing member, whether exist with the weld seam of judging the honeycomb brazing member and leak the weldering phenomenon.
9. the detection method of honeycomb brazing member according to claim 8 is characterized in that, also comprises step S0 before the said step S1: the weld seam of cleaning honeycomb brazing member.
10. the detection method of honeycomb brazing member according to claim 8 is characterized in that, said step S3 utilizes magnifier that the weld seam of honeycomb brazing member is observed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193016.XA CN102706890B (en) | 2012-06-12 | 2012-06-12 | Detection device and detection method of honeycomb brazing part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193016.XA CN102706890B (en) | 2012-06-12 | 2012-06-12 | Detection device and detection method of honeycomb brazing part |
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| Publication Number | Publication Date |
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| CN102706890A true CN102706890A (en) | 2012-10-03 |
| CN102706890B CN102706890B (en) | 2014-07-09 |
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| CN201210193016.XA Active CN102706890B (en) | 2012-06-12 | 2012-06-12 | Detection device and detection method of honeycomb brazing part |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743767A (en) * | 2013-11-07 | 2014-04-23 | 北京星航机电装备有限公司 | Electron microscopic detection method for brazing metal honeycomb structure welding quality |
| CN104237276A (en) * | 2014-10-16 | 2014-12-24 | 北京星航机电装备有限公司 | Electronic microscopic detecting method for surface core sealing-off defect of brazing metal honeycomb structure |
| CN106289855A (en) * | 2016-08-26 | 2017-01-04 | 北京星航机电装备有限公司 | Brazing metal honeycomb texture welding quality metallographic detection method |
| CN111397802A (en) * | 2020-03-31 | 2020-07-10 | 中国航发动力股份有限公司 | Liquid leakage detection method and device for honeycomb parts |
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| US4215583A (en) * | 1978-11-14 | 1980-08-05 | Ndt Instruments, Inc. | Apparatus and method for bondtesting by ultrasonic complex impedance plane analysis |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743767A (en) * | 2013-11-07 | 2014-04-23 | 北京星航机电装备有限公司 | Electron microscopic detection method for brazing metal honeycomb structure welding quality |
| CN103743767B (en) * | 2013-11-07 | 2016-02-10 | 北京星航机电装备有限公司 | A kind of brazing metal honeycomb welding quality electron microscopic detection method |
| CN104237276A (en) * | 2014-10-16 | 2014-12-24 | 北京星航机电装备有限公司 | Electronic microscopic detecting method for surface core sealing-off defect of brazing metal honeycomb structure |
| CN106289855A (en) * | 2016-08-26 | 2017-01-04 | 北京星航机电装备有限公司 | Brazing metal honeycomb texture welding quality metallographic detection method |
| CN111397802A (en) * | 2020-03-31 | 2020-07-10 | 中国航发动力股份有限公司 | Liquid leakage detection method and device for honeycomb parts |
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| Publication number | Publication date |
|---|---|
| CN102706890B (en) | 2014-07-09 |
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