CN105277626B - The mock standard part of detection is swept for turbine casing electron beam weld water logging Ultrasonic C - Google Patents
The mock standard part of detection is swept for turbine casing electron beam weld water logging Ultrasonic C Download PDFInfo
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- CN105277626B CN105277626B CN201510755234.1A CN201510755234A CN105277626B CN 105277626 B CN105277626 B CN 105277626B CN 201510755234 A CN201510755234 A CN 201510755234A CN 105277626 B CN105277626 B CN 105277626B
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Abstract
The invention discloses a kind of mock standard part that detection is swept for turbine casing electron beam weld water logging Ultrasonic C, including rotating cylinder and the coaxial disc for being fixed on rotating cylinder one end, 3 flat-bottom holes as normative reference for being used to detect workpiece electron beam weld defect perpendicular to disk end face different-diameter are machined with the same diameter circumference in the lower surface of disk, the bottom hole identity distance of flat-bottom hole has an area of the distance δ of disk upper surface thereon1With turbine casing weld seam fitting surface away from detection datum end face distance δ2It is identical, height h of the end face away from mock standard part installation end face directly over flat-bottom hole1With height h of the turbine casing weld seam detection datum end face away from examined workpiece installation end face2Identical, the inner ring diameter after circle diameter is processed with examined workpiece where flat hole site is of substantially equal plus weld seam minimum fusion penetration value.The present invention can be used for the weld penetration for determining detection sensitivity and being monitored, and verify feasibility, accuracy and the reliability of immersed ultrasonic test technique.
Description
Technical field
The present invention relates to aero-turbine casing electron beam weld detection technique field, is more particularly to sent out for aviation
Motivation turbine casing electron beam weld water logging Ultrasonic C sweeps the mock standard part of detection.
Background technology
Turbine casing is the very important part of aero-engine.The part 4 of aero-turbine casing and part 5 it
Between be welded to connect, due to its design feature, working environment and material property, to lacking in the fusion penetration of weld seam, weld seam in design
Fall into, welding residual deformation has very high requirement.In consideration of it, the welding between aero-turbine casing part 4 and part 5
Using electron beam welding (EBW).Electron beam welding energy density is high, easily realizes the deep penetration welding of metal material, has
Weld seam is narrow, it is deep/wide than it is big, weld heat-affected zone is small, welding residual deformation is small, the easy accurately control of welding condition, repeatedly
The advantages that property and stability are good.Just because of its above-mentioned advantage, electron beam welding technology obtains tremendous development, had been widely used
In industry-by-industry.But due to the shadow of the factors such as the manufacture material of parts, the state of weld seam, welding procedure and after welding treatment
Ring, defect is often produced inside electron beam weld, such as stomata, crackle, lack of penetration and incomplete fusion, directly influences the strong of weld seam
Degree and use reliability.In order to ensure the quality of electron beam weld, it is necessary to carry out Non-Destructive Testing to the welded seam area on parts.
Because depth/wide ratio of electron beam weld is big, defect is typically all smaller, therefore detection sensitivity requirement is compared
It is high.For the Non-Destructive Testing of weld seam internal flaw, common method has X-ray detection method and ultrasonic Detection Method.But prior art
Ray detection, the defects of gas pore in weld metal, crackle can only be detected, it can be determined that whether penetrate, but can not determine that welding is molten
Deep value.Generally also simply detection weld defect, the determination application as fusion penetration are also less for ultrasound detection.
In the production and processing of aero-turbine casing, in order to grasp the quality of electron beam weld, it is necessary to turbine
The fusion penetration of casket electron beam weld is detected, but prior art does not detect electron beam weld fusion penetration and the effective ways of defect.
Inventor has certain feasibility using ultrasonic wave by thinking to determine weld penetration, but on condition that must have being capable of mould
Intend the mock standard part of actual parts, particularly fusion penetration part, how to simulate actual seized part, how to simulate fusion penetration is most
Big problem.
The content of the invention
The problem of present invention proposes for working practice, there is provided one kind is used for turbine casing electron beam weld water logging ultrasound
C sweeps the mock standard part of detection, to determine that Ultrasonic C sweeps the detection sensitivity of detection, and detection examined workpiece turbine casing electricity
Defect in beamlet weld penetration, weld seam.
The mock standard part of detection is swept provided by the present invention for turbine casing electron beam weld water logging Ultrasonic C, it is formed
Including rotating cylinder and the coaxial disc for being fixed on rotating cylinder one end, it is machined with the same diameter circumference in the lower surface of disk
3 perpendicular to disk end face different-diameter, for detecting the flat-bottom hole as normative reference of workpiece electron beam weld defect,
The flat-bottom hole of 3 different-diameters is respectively that the flat-bottom hole for the maximum equivalent diameter that weld seam allows to ignore, multiple defects allow
Maximum equivalent diameter flat-bottom hole and the flat-bottom hole of maximum equivalent diameter that allows of individual defect, the bottom hole identity distance of flat-bottom hole its
The distance δ of top disk upper surface1With turbine casing weld seam fitting surface away from detection datum end face distance δ2It is identical, flat-bottom hole just on
Square end identity distance mock standard part installs the height h of end face1Height of end face is installed away from it with turbine casing weld seam detection datum end face
Spend h2Identical, circle diameter where flat hole site adds weld seam minimum fusion penetration value base with the inner ring diameter after examined workpiece processing
This equal, i.e. diameter D of flat-bottom hole position1≈D3+ F, wherein D3Inner ring diameter after being machined for turbine casing, F are weldering
Stitch minimum fusion penetration.
In the above-mentioned technical proposal of the present invention, the water logging Ultrasonic C sweeps detection, refers to detected turbine casing
(workpiece) is dipped in water, the electron beam weld on turbine casing (workpiece) is detected by ultrasonic scanning image, with true
Determine whether the electron beam weld on workpiece meets design requirement.
In the above-mentioned technical proposal of the present invention, two groups or two groups can be processed on the same diameter circumference in the lower surface of disk
The putting down as normative reference that is used to detect workpiece electron beam weld defect of 3 above perpendicular to disk end face different-diameter
Bottom outlet.Multigroup normative reference flat-bottom hole is set, can prevent the flat hole machined error from bringing whole mock standard part to scrap.Ginseng
Examine standard flat-bottom hole and be traditionally arranged to be two groups.
In the above-mentioned technical proposal of the present invention, ring of the disk upper surface from flat-bottom hole region to disk border
Shape plane decision design is sinking step plane.Such structure design is taken in disk upper surface, advantageously ensures that flat-bottom hole
Bottom hole identity distance has an area of the distance δ of side surface thereon1With weld seam fitting surface away from detection datum end face distance δ2It is identical, and flat-bottom hole
Height h of the surface disk end face away from mock standard part installation end face1With examined workpiece weld seam detection datum end face away from tested work
Part installs the height h of end face2It is identical.
In the above-mentioned technical proposal of the present invention, ring of the disk lower surface from flat-bottom hole region to disk border
Shape plane decision design is upper top step plane.The disk lower surface of flat-bottom hole region is designed as to the upper roof platform rank of annular
Plane, when the thickness of disk is bigger, the depth of flat-bottom hole can be reduced.Due to the flat-bottom hole as normative reference,
Its diameter very little, generally less than 1mm, and bottom hole is plane, processing is very difficult.Reduce the working depth of flat-bottom hole, can be big
The big difficulty of processing for reducing flat-bottom hole.
In the above-mentioned technical proposal of the present invention, the rotating cylinder and the disk can be overall structure, or can
The combining structure of dismounting.Combining structure preferentially is used, as rotating cylinder and disk can be attached by multiple means of vertical screws.
In the above-mentioned technical proposal of the present invention, in order to mitigate the weight of mock standard part, the disk decision design into
The disk of flange arrangement；The rotating cylinder decision design is into the structure that some loss of weight circular holes are machined with cylinder.
The mock standard part of detection, simulation mark are swept provided by the present invention for turbine casing electron beam weld water logging Ultrasonic C
Position of the size and normative reference hole of normative reference flat-bottom hole on mock standard part in the appearance and size of quasi- part, mock standard part
Put and be defined below：
(1) determination of mock standard part appearance and size：According to the size and dress during examined workpiece turbine casing ultrasound detection
Clip-like condition determines the appearance and size of mock standard part, simulates the normative reference flat-bottom hole upper end identity distance on mock standard part
Standard component installs the height h of end face1(such as Fig. 2), with turbine casing weld seam detection datum end face away from turbine casing installation end face
Height h2(such as Fig. 4) is identical, i.e. height h of the end face away from rotary table plane directly over flat-bottom hole1With turbine casing weld seam detection
Height h of the datum end face away from rotary table plane2Equally；Make the distance δ of the bottom hole identity distance disk upper surface of flat-bottom hole again1, i.e.,
Flat-bottom hole buried depth δ1(such as Fig. 3) is with turbine casing weld seam fitting surface away from detection datum end face distance δ2(such as Fig. 5) is identical, to ensure
When mock standard part and workpiece scanning, the distance and ultrasonic probe in ultrasonic probe anomaly bottom outlet bottom hole face are away from weld seam fitting surface
Detecting distance it is the same.
(2) size of normative reference flat-bottom hole determines on mock standard part：Allow to ignore according to design drawing requirement scarce
Sunken maximum equivalent diameter determines flat-bottom hole 1A or the 1B diameter of minimum dimension, and the multiple defects allowed according to design drawing are maximum
Equivalent diameter determines time small size flat-bottom hole 2A or 2B diameter, true further according to the single greatest drawback equivalent diameter of design drawing permission
Fixed maximum flat-bottom hole 3A or 3B diameters, it can be determined to process two or more sets satisfactory flat-bottom holes according to difficulty of processing, then
Determine which group flat-bottom hole can be used as normative reference hole through metering.
(3) determination of normative reference flat-bottom hole position on mock standard part：Required according to design drawing, it is desirable to examined workpiece
The fusion penetration of weld seam is not less than F after turbine casing machining, and the final diameter of the turbine casing machine inner ring after machining is D3, according to
Position of this determination flat-bottom hole center on mock standard part disk, i.e. flat-bottom hole are located at same circumference on mock standard part disk
Diameter D1For：D1≈D3+ F, F are weld seam minimum fusion penetration, so can be to sweep figure in C by using maximum flat-bottom hole 3A or 3B
On position determine fusion penetration monitor area (ROI).Method is as follows：Measured inside from flat-bottom hole centerline along disk diameter direction
Size K (about F/2), the as coboundary of fusion penetration monitor area are taken, measure size F-K outward, as fusion penetration monitor area
Lower boundary, the section of F length is fusion penetration monitor area (ROI), and now fusion penetration monitor area (ROI) is the final chi according to part
Very little determination, there is no correlation with the actual processing surplus of seized part, eliminate actual parts welding deformation or processing mistake
The influence brought.In view of considerations above, standard component can be detected with actual parts using same scanning program, while also may be used
To determine to need the fusion penetration region monitored by standard component.
The mock standard part of detection is swept provided by the present invention for turbine casing electron beam weld water logging Ultrasonic C, have with
Under very prominent advantageous effects：
1st, water logging Ultrasonic C is carried out to turbine casing electron beam weld using mock standard part provided by the invention and sweeps detection,
It can determine that ultrasound detection sensitivity and weld seam want fusion penetration monitor area (ROI), so that ultrasound detection realizes fusion penetration really
It is fixed, ultrasound detection scope is expanded, and substantially increase the accuracy and reliability of detection.Mock standard part can be preferable simultaneously
Simulation practical work piece weld inspection region and defect, mock standard part can use same scanning program to carry out with actual parts
Detection.
2nd, by using mock standard part provided by the invention, ultrasonic examination person can be allowed intuitively and accurately by observing C
Sweep the power that wave amplitude is shown on figure and its be in the situation of fusion penetration monitor area (ROI) to judge whether electron beam welding deposits
Lack of penetration, when having lack of penetration, whether its fusion penetration meets the requirements.
3rd, the mock standard part of detection is swept provided by the present invention for electron beam weld water logging Ultrasonic C to be applied to
The detection of electron beam weld on the workpiece of similar turbine casing.
Water logging Ultrasonic C is carried out to aero-turbine casing electron beam weld using mock standard part provided by the invention
Sweep detection, it may be determined that detection sensitivity and the weld penetration to be monitored, and verify and be directed to such part immersed ultrasonic test work
Feasibility, accuracy and the reliability of skill.
Brief description of the drawings
Fig. 1 is the overlooking the structure diagram of immersed ultrasonic test mock standard part of the present invention.
Cross section structure diagrams of the Fig. 2 for A-A in Fig. 1 to mock standard part.
Fig. 3 is part B partial enlargement structural representation in Fig. 2.
Fig. 4 is seized part aero-turbine case structure schematic diagram.
Fig. 5 is weld inspection region local I mplifying structure schematic diagram in Fig. 4.
Fig. 6 is that weld penetration is less than permission minimum value F welding schematic diagrames (unqualified).
Fig. 7 is that weld penetration is just the welding schematic diagram (qualified) for allowing minimum value F；
Fig. 8 is that weld penetration is more than the welding schematic diagram (qualified) for allowing minimum value F；
Fig. 9 is the C-scan image of mock standard part and the determination method schematic diagram of fusion penetration monitor area.
Figure 10 is the C-scan image and fusion penetration monitoring area schematic of example turbine casing standard component.
The object of each shown by reference numeral mark is respectively in above-mentioned accompanying drawing：The disk of 1- mock standard parts；2- mock standards
The cylinder of part；3- normative reference flat-bottom holes；The Z-type part of 4- turbine casings；The cone cylinder part of 5- turbine casings；6- parts 4 with
Electron beam weld between part 5；7- ultrasonic probes.
Embodiment
Embodiments of the invention are provided below in conjunction with the accompanying drawings, and the present invention is made further specifically by embodiment
It is bright.It is important to point out that embodiment is served only for, the present invention is described further, it is impossible to is interpreted as protecting model to the present invention
The limitation enclosed, art are skillful at personnel according to foregoing invention content, the present invention is made some nonessential improvement and
Adjustment is embodied, and is easily able to, and therefore, such improvement should still fall within protection scope of the present invention with adjustment.
Embodiment 1
The composition of the mock standard part of the present embodiment is detected the workpiece whirlpool of weld seam as shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3
Take turns the composition of casing as shown in figures 4 and 5, the final diameter after the machining of turbine casing inner ring is φ 398.22mm, quilt
The weld seam of detection is that the electron beam weld 6 between part 4 and part 5, design requirement weld penetration are not less than 1.52mm in workpiece,
Weld penetration closes unqualified as shown in accompanying drawing 6, accompanying drawing 7 and accompanying drawing 8 after testing.The composition of the mock standard part of the present embodiment, bag
Include rotating cylinder 3 and the coaxial disc 1 of rotating cylinder one end is fixed on by 6 screws, the disk is flange plate structure
Uniform thickness disk, two groups of 3 use perpendicular to disk end face different-diameter are machined with the same diameter circumference in the lower surface of disk
In the flat-bottom hole 2 as normative reference of detection workpiece electron beam weld defect, one group is A groups, and one group is B groups, and two groups corresponding
The flat-bottom holes of 3 different-diameters be identical, respectively weld seam allows to ignore the flat of the maximum equivalent diameter of defect
Hole A1/B1, a diameter of 0.4mm, it is allowed to the flat-bottom hole A2/B2, a diameter of 0.8mm of multiple defect maximum equivalent diameters, it is allowed to
The flat-bottom hole A3/B3 of single greatest drawback equivalent diameter, a diameter of 1.0mm, the bottom hole identity distance of flat-bottom hole have an area of disk upper end thereon
The distance δ in face1With weld seam fitting surface away from detection datum end face distance δ2Identical, end face is pacified away from mock standard part directly over flat-bottom hole
Fill the height h of end face1With height h of the examined workpiece weld seam detection datum end face away from examined workpiece installation end face2It is identical, flat-bottom hole
Inner ring diameter after circle diameter is processed with examined workpiece where center is of substantially equal plus weld seam minimum fusion penetration value, about
399.74mm。
Water logging Ultrasonic C is carried out to the electron beam weld on turbine casing using the mock standard part of the present embodiment and sweeps detection
Process is as follows：
1. determine detection range using mock standard part and work out the detection program for specific part (turbine casing).Adjust
The position of ultrasonic probe 7 is saved, mock standard part flat-bottom hole is found and shows, makes ultrasonic probe along by flat-bottom hole center radius side
To 1-2mm is outwardly and inwardly moved respectively, detection range is determined, regulation gain makes the minimum flat-bottom hole (φ 0.4mm-1B) of diameter
Wave amplitude reach more than 25%, the wave amplitude of the maximum flat-bottom hole (φ 1.0mm-3B) of diameter is between 89%-99%, according to setting
Good ultrasound parameter simultaneously weaves scanning program standard component is detected, and observes its C-scan figure, finely tunes the detection model in program
Enclose, C-scan figure is reached Fig. 9 effects.
2. determining fusion penetration monitor area (ROI) on the C-scan figure of mock standard part, specific method is：Partial enlargement (φ
1.0mm-3B) show, find the position of the flat-bottom hole center on C-scan figure, and mark, such as the flat-bottom hole center in Figure 10
Line；0.86mm is measured toward the top of C-scan figure again, determines the coboundary (internal diameter direction of part) of ROI region；Again figure is swept toward C
0.66mm is measured in lower section, determines the lower boundary (the external diameter direction of part) of ROI region, and the section between up-and-down boundary is fusion penetration prison
Control region (ROI).
3. actual parts are detected using the parameter detected to mock standard part, according to standard component fusion penetration really
Determine method and fusion penetration monitor area (ROI) is determined to part, then the display found on figure is swept to C and is evaluated.
4. after the completion of actual parts detection, scanning mock standard part, confirms whether the amplitude change of flat-bottom hole is permitting again
Perhaps in the range of, whether flat-bottom hole position of center line changes, to ensure the stability of detection.
5. after finding display, if having a question, compared with the flat-bottom hole in mock standard part, judgement displays whether to close
Lattice.The mock standard part that the part electron beam weld water logging Ultrasonic C sweeps detection is verified by many experiments, is surpassed using its determination
Part is detected after the detection sensitivity of sound detection and the weld penetration to be monitored, it is found that all kinds of defects are shown, such as：Gas
Hole, crackle, lack of penetration (fusion penetration does not meet/met the requirements), and typical defect have passed through metallographic checking, expand ultrasound detection
Scope, and the accuracy and reliability of detection are substantially increased, detection failure is substantially not present in application process, ensure that zero
Part quality, also greatly reduces production cost.
Embodiment 2
The mock standard part for being used for turbine casing electron beam weld water logging Ultrasonic C and sweeping detection that the present embodiment provides, its structure
It is annular of the disk upper surface from flat-bottom hole region to disk border into place substantially the same manner as Example 1, different
Plane is sinking step plane, and the bottom hole identity distance of flat-bottom hole has an area of the distance δ of disk sinking step plane thereon1With weld seam fitting surface
Away from detection datum end face distance δ2It is identical, height of the disk sinking step plane away from mock standard part installation end face directly over flat-bottom hole
Spend h1With height h of the examined workpiece weld seam detection datum end face away from examined workpiece installation end face2It is identical.
Embodiment 3
The mock standard part for being used for turbine casing electron beam weld water logging Ultrasonic C and sweeping detection that the present embodiment provides, its structure
It is annular of the disk upper surface from flat-bottom hole region to disk border into place substantially the same manner as Example 1, different
Plane is sinking step plane, and the bottom hole identity distance of flat-bottom hole has an area of the distance δ of disk sinking step plane thereon1With weld seam fitting surface
Away from detection datum end face distance δ2It is identical, height of the disk sinking step plane away from mock standard part installation end face directly over flat-bottom hole
Spend h1With height h of the examined workpiece weld seam detection datum end face away from examined workpiece installation end face2It is identical.Disk lower surface is from flat
Hole region to the planar annular of disk border is upper top step plane, to reduce the working depth of flat-bottom hole, is reduced flat
The difficulty of processing in hole.Some loss of weight circular holes are machined with the rotating cylinder 3.
Claims (8)
1. a kind of mock standard part that detection is swept for turbine casing electron beam weld water logging Ultrasonic C, it is characterised in that including returning
Drum body (3) and the coaxial disc (1) for being fixed on rotating cylinder one end, are machined with the same diameter circumference in the lower surface of disk
3 flat-bottom holes as normative reference for being used to detect workpiece electron beam weld defect perpendicular to disk end face different-diameter
(2), the flat-bottom hole of 3 different-diameters is respectively the flat-bottom hole for the maximum equivalent diameter that weld seam allows to ignore, multiple defects
The flat-bottom hole for the maximum equivalent diameter that the flat-bottom hole and individual defect of the maximum equivalent diameter of permission allow, the bottom hole face of flat-bottom hole
Have an area of the distance δ of disk upper surface away from thereon1With turbine casing weld seam fitting surface away from detection datum end face distance δ2It is identical, flat-bottom hole
Height h of the surface end face away from mock standard part installation end face1End face is installed away from it with turbine casing weld seam detection datum end face
Height h2Identical, circle diameter where flat hole site adds weld seam minimum fusion penetration with the inner ring diameter after examined workpiece processing
It is worth of substantially equal.
2. the mock standard part according to claim 1 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C, its
It is characterised by, two groups 3 institutes perpendicular to disk end face different-diameter is machined with the same diameter circumference in the lower surface of disk
State flat-bottom hole (2).
3. the mock standard according to claim 1 or 2 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C
Part, it is characterised in that planar annular of the disk upper surface from flat-bottom hole region to disk border is that sinking step is put down
Face.
4. the mock standard according to claim 1 or 2 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C
Part, it is characterised in that planar annular of the disk lower surface from flat-bottom hole region to disk border is that upper roof platform rank is put down
Face.
5. the mock standard part according to claim 3 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C, its
It is characterised by, planar annular of the disk lower surface from flat-bottom hole region to disk border is upper top step plane.
6. the mock standard according to claim 1 or 2 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C
Part, it is characterised in that the rotating cylinder and the disk are detachable combining structure.
7. the mock standard part according to claim 6 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C, its
It is characterised by, the disk is flange arrangement disk.
8. the mock standard part according to claim 6 that detection is swept for turbine casing electron beam weld water logging Ultrasonic C, its
It is characterised by, some loss of weight circular holes is machined with the rotating cylinder.
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| CN201510755234.1A CN105277626B (en) | 2015-11-09 | 2015-11-09 | The mock standard part of detection is swept for turbine casing electron beam weld water logging Ultrasonic C |
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| CN113552226B (en) * | 2021-07-21 | 2024-04-09 | 中国航发成都发动机有限公司 | Reference block for water immersion ultrasonic detection of electron beam welding seam and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61265565A (en) * | 1985-05-21 | 1986-11-25 | Mitsubishi Heavy Ind Ltd | Method for forming standard flaw for non-destructive inspection |
| JP4215934B2 (en) * | 2000-06-20 | 2009-01-28 | 三菱重工業株式会社 | Ultrasonic flaw detector |
| CN102435673A (en) * | 2011-09-14 | 2012-05-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Ultrasonic detection method for powder plate |
| CN103543201B (en) * | 2013-10-17 | 2016-01-20 | 清华大学 | Axial workpiece flaw identification method for radial ultrasonic automatic flaw detection |
| CN104698081B (en) * | 2013-12-10 | 2018-01-23 | 贵州黎阳航空动力有限公司 | A kind of driving engine gear interference bolt ultrasonic flaw detection method |
| CN104076089B (en) * | 2014-06-27 | 2017-01-18 | 南京晨光集团有限责任公司 | Automatic ultrasonic C scanning detection system for annular forging |
| CN104297342B (en) * | 2014-10-17 | 2016-08-17 | 西安航空动力股份有限公司 | A kind of ultrasonic detection method of engine air conduit electron beam weld |
| CN205157507U (en) * | 2015-11-09 | 2016-04-13 | 成都发动机（集团）有限公司 | A mock standard spare that is used for turbine casing electron -beam welding seam water logging supersound C to sweep detection |
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