CN203894200U - Reference block for ultrasonic detection of nickel base alloy weld - Google Patents
Reference block for ultrasonic detection of nickel base alloy weld Download PDFInfo
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- CN203894200U CN203894200U CN201420248985.5U CN201420248985U CN203894200U CN 203894200 U CN203894200 U CN 203894200U CN 201420248985 U CN201420248985 U CN 201420248985U CN 203894200 U CN203894200 U CN 203894200U
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 title abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title abstract description 7
- 229910052759 nickel Inorganic materials 0.000 title abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 claims abstract description 65
- 238000003466 welding Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 37
- 239000000523 sample Substances 0.000 description 21
- 239000013078 crystal Substances 0.000 description 6
- 238000009659 non-destructive testing Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a reference block for ultrasonic detection of a nickel base alloy weld. The reference block comprises a parent metal with the thickness of T, wherein a weld is arranged on the front side of the parent metal; more than three first transverse holes and one second transverse hole are formed in the weld; the distance between each two first transverse holes is not less than 12mm; the distance from the second transverse hole to the upper surface of the parent metal is T-5mm; more than three third transverse holes are formed in the parent metal; the distances between the third transverse holes to the upper surface of the parent metal form an arithmetic progression of which the first term is 10mm and the tolerance is 20mm; the weld, the first transverse holes and the second transverse hole are positioned on the same side of the parent metal; the third transverse holes are positioned on the other side of the parent metal; a first arc block with the diameter of 50mm and a second arc block with the diameter of 25mm are arranged at the right end of the parent metal; and the sum of thicknesses of the first arc block and the second arc block is equal to the width of the parent metal. The reference block has the beneficial effects that the overlap section of sound waves in the detection process is small, mutual interference of the sound waves is low, and the detection precision is high.
Description
Technical field
The utility model relates to a kind of reference block detecting for nickel-base alloy welding line ultrasonic.
Background technology
At petrochemical industry chemical field, the pressure vessel that extensively adopts resistance to high temperature oxidation and corrosion-resistant nickel-base alloy (UNS N08810) to manufacture.This material at normal temperatures, mainly exists with Austenite Morphology, therefore this material has the similar acoustic feature of austenitic stainless steel.In order to guarantee the quality of these equipment, need to carry out Non-Destructive Testing to these weld seam internal soundnesses.Possibility generally has ray and ultrasonic two kinds, and wherein Ultrasonic Detection, due to the anisotropic factor of nickel-base alloy seam organization coarse grains harmony, is difficult to effectively detect.Equipment is in manufacture process, manufacturing plant generally adopts ray detection, and not only cost is high, efficiency is low, and surpasses 50mm nickel-base alloy weld seam for thickness, adopt accelerator or γ source to coordinate T2 class film to detect it, still lower for some blind crack recall rates.And this equipment requires to carry out Ultrasonic Detection conventionally before and after thermal treatment, operation brings potential safety hazard to equipment to prevent reheat crack(ing).Developing nickel-base alloy weld inspection system, overcome the difficulty of Ultrasonic Detection, meet signal to noise ratio (S/N ratio) and sensitivity requirement, is field of non destructive testing urgent problem.
Although Non-Destructive Testing standard JB/T4730.3-2005 < < bearing device Non-Destructive Testing > > appendix N has stipulated the Ultrasonic Detection of austenitic stainless steel weld joint, also provided the test block that regulates sensitivity, but in the middle of austenitic stainless steel Ultrasonic Detection, maximum problem signal to noise ratio (S/N ratio) is not enough and be difficult to reach required sensitivity, there is no solution.The artificial reflecting body of this reference block is arranged on mother metal simultaneously, can not represent the weld seam property examined.The reference block of existing buying, generally adopts the form of 30mm butt weld of thin plates, differs larger with practical work piece welding manner and welding technology.Can whether the test block of stipulating in above-mentioned < < bearing device Non-Destructive Testing > > standard can not have enough signal to noise ratio (S/N ratio)s and reach appointment sensitivity by test macro before detection, 4730.3-2011 examines the central appendix N of original text and by thickness of slab 50mm, expands sensing range to 80mm simultaneously, can not solve the problem of the reference block sensing range deficiency of appendix N.
Summary of the invention
The purpose of this utility model is to provide a kind of reference block detecting for nickel-base alloy welding line ultrasonic, solves the technological deficiency that accuracy of detection in prior art is not high, be not easy to carry.
For addressing the above problem, technical solution adopted in the utility model is:
The reference block detecting for nickel-base alloy welding line ultrasonic, comprises that thickness is the mother metal of T,
Described mother metal front side arranges weld seam, on weld seam, have three the first above cross-drilled holes and the second cross-drilled hole under first cross-drilled hole being positioned at bottom from top to bottom, distance between two adjacent the first cross-drilled holes is not less than 12mm, and the second described cross-drilled hole is T-5mm to the distance of mother metal upper surface;
Three the 3rd above cross-drilled holes are set on described mother metal from top to bottom, and the 3rd described cross-drilled hole and the distance of mother metal upper surface are that first term is the arithmetic progression that 10mm, tolerance are 20mm;
Described weld seam, the first cross-drilled hole and the second cross-drilled hole are positioned at the same side of mother metal, and the 3rd cross-drilled hole is positioned at the opposite side of mother metal;
Described mother metal right-hand member arranges radius and is respectively the first circular arc piece of 50mm and the second circular arc piece that radius is 25mm, and the first described circular arc piece is positioned at the rear of the second circular arc piece, and the thickness sum of the first circular arc piece and the second circular arc piece equates with the width of mother metal.
As further improvement of the utility model, the first described cross-drilled hole and the distance of mother metal upper surface are that first term is the arithmetic progression that T/4, tolerance are T/4.
As of the present utility model, further improve, described the 3rd cross-drilled hole line of centres and the large groove of weld seam edge are tangent.
The beneficial effects of the utility model are: can test the essence etc. whether nickel-base alloy ultrasonic testing system has enough signal to noise ratio (S/N ratio)s and regulate detection system simultaneously, and also easy to use, be easy to carry about with one, applicable Site Detection, debugging.In addition, the position distribution in hole has been done optimum optimization, makes the adjacent holes non-interference in same test block.And the compressional wave potable crystal probe wafer size larger feature larger according to focus, suitably widened test block width (the thickness sum of the first circular arc piece and the second circular arc piece), increase probe and test block contact area, made test comparatively stable, quick, avoided sidewall interference simultaneously.It is in the middle of reality detects that cross-drilled hole is set at weld seam center, and the result setting of the position statistics of dissecting according to defect is with strong points.Increased in welded joints second cross-drilled hole, can conveniently test depth capacity signal to noise ratio (S/N ratio) on this test block weld seam, to the property the examined evaluation of this weld seam, provide reference simultaneously.
Weld seam and the 3rd cross-drilled hole are positioned at the both sides of mother metal, and the first cross-drilled hole and the second cross-drilled hole and the 3rd cross-drilled hole are positioned at the both sides of mother metal, and in testing process, the lap of sound wave is little, and the phase mutual interference of sound wave is little, and the precision of detection is high.
The present invention coordinates compressional wave potable crystal probe, and on test block width, broadening, to 60mm, solves the problem of the loose contact that detects front twin lamella longitudinal wave oblique probe and narrower reference block preferably.Should can test Ni-based welding line ultrasonic detection system ability for the reference block group of nickel billon weld seam Ultrasonic Detection, wherein on axis of a weld, apart from reference block upper surface maximum distance apart, long cross-drilled hole is set, can tests the certain depth maximum signal to noise ratio of ultrasonic testing system.Meanwhile, the adjustings such as sensitivity before this reference block can detect for compressional wave potable crystal probe, shear wave monocrystalline angle probe, compressional wave monocrystalline angle probe etc., sweep limit, after detecting, ultrasonic system is checked, and field adjustable is carried out at the scene that can also be carried to.
The 3rd cross-drilled hole line of centres and the large groove of weld seam edge are tangent, are convenient to determine the distance of the 3rd cross-drilled hole and mother metal side, play the effect to the 3rd cross-drilled hole location.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the P of Fig. 1 is to view.
Fig. 3 is the schematic diagram of probe placement in test block.
Fig. 4 is the waveform master drawing while making DAC curve.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
The reference block detecting for nickel-base alloy welding line ultrasonic as depicted in figs. 1 and 2, comprise that thickness is the mother metal 1 of T, described mother metal 1 front side arranges weld seam 2, on weld seam 2, have the second cross-drilled hole 4 under three the first cross-drilled holes 3 and first cross-drilled hole 3 being positioned at bottom from top to bottom, the first described cross-drilled hole 3 is that first term is the arithmetic progression that T/4, tolerance are T/4 with the distance of mother metal 1 upper surface, and the second described cross-drilled hole 4 is T-5mm to the distance of mother metal 1 upper surface; Three the 3rd cross-drilled holes 5 are set on described mother metal 1 from top to bottom, and the 3rd described cross-drilled hole 5 is that first term is the arithmetic progression that 10mm, tolerance are 20mm with the distance of mother metal 1 upper surface; Described weld seam 2, the first cross-drilled hole 3 and the second cross-drilled hole 4 is positioned at the same side of mother metal 1, and the 3rd cross-drilled hole 5 is positioned at the opposite side of mother metal 1; Described mother metal 1 right-hand member arranges radius and is respectively the first circular arc piece 6 of 50mm and the second circular arc piece 7 that radius is 25mm, the first described circular arc piece 6 is positioned at the rear of the second circular arc piece 7, and the thickness sum of the first circular arc piece 6 and the second circular arc piece 7 equates with the width of mother metal 1, the 3rd described cross-drilled hole 5 lines of centres and weld seam 2 large groove edges are tangent, the diameter of described the first cross-drilled hole 3, the first cross-drilled hole 4 and the 3rd cross-drilled hole 5 is 2mm, and the degree of depth is 40mm.
It is 70mm, 90mm, tri-kinds of specifications of 120mm that test block is generally mother metal thickness T, one of the top of test block the 3rd cross-drilled hole of three kinds of specifications is 10mm apart from the distance of mother metal upper surface, and the distance between three adjacent the 3rd cross-drilled holes is 20mm, three the 3rd cross-drilled holes are respectively 10mm, 30mm and 50mm apart from the distance of mother metal upper surface.Mother metal thickness is that the distance between two adjacent the first cross-drilled holes of the test block of 70mm is 70/4mm, be 17.5mm, namely the first cross-drilled hole is respectively 17.5mm, 35mm, 52.5mm apart from the distance of mother metal upper surface, and the second cross-drilled hole is 70-5=65mm apart from the distance of mother metal upper surface.Mother metal thickness is that the distance between two adjacent the first cross-drilled holes of the test block of 90mm is 90/4mm, be 22.5mm, namely the first cross-drilled hole is respectively 22.5mm, 45mm, 67.5mm apart from the distance of mother metal upper surface, and the second cross-drilled hole is 90-5=85mm apart from the distance of mother metal upper surface.Mother metal thickness is that the distance between two adjacent the first cross-drilled holes of the test block of 120mm is 120/4mm, be 30mm, namely the first cross-drilled hole is respectively 30mm, 60mm, 90mm apart from the distance of mother metal upper surface, and the second cross-drilled hole is 120-5=115mm apart from the distance of mother metal upper surface.
The test block that mother metal 1 thickness is 70mm, the nickel-base alloy welding line ultrasonic that is 10-50mm for thickness of slab detects, the test block that mother metal 1 thickness is 90mm is that 10-80mm nickel-base alloy welding line ultrasonic detects for thickness of slab, and the nickel-base alloy welding line ultrasonic that the test block that mother metal 1 thickness is 120mm is 10-110mm for thickness of slab detects.
At the leading flank of mother metal 1, a side of each cross-drilled hole is provided with for representing that the center line of this cross-drilled hole is to hole depth sign and the arrow mark of the distance of this reference block upper surface.
The use of the reference block that the utility model detects for nickel-base alloy welding line ultrasonic is as follows.
The velocity of sound and zero point correction, the calibration of angle probe refraction angle:
First will pop one's head in 8 placement test blocks, shown in real Fig. 3.
A. move forward and backward probe 8, make the echo amplitude of circular arc piece 6 of R50 the highest, echo amplitude does not exceed screen, otherwise need to reduce gain.When echo amplitude reaches the highest, keep probe motionless, in the probe side corresponding with test block " 0 " scale, perform mark, this point is exactly the incidence point of wave beam.With rule, measure the beam index of angle probe to the distance of Front distance, be angle probe Front distance, by this value input reflectoscope.
B. will pop one's head in and 8 to R25 circular arc piece, move, and make R25 circular arc piece 7 and R50 circular arc piece 8 echoes appear on screen simultaneously, transfer teaching machine double-gate pattern, make gate A locking R25, gate B locking R50(prior art), it is 25mm that the manual adjustments velocity of sound makes two gate path differences, and sound velocity test completes (also can adopt teaching machine automatic calibration pattern directly to calibrate the velocity of sound and zero point).Regulate probe 8 to postpone or zero point, make gate B show that sound path is 50, regulated zero point.
C.K value calibration
Under the prerequisite completing at the velocity of sound, check of zero, with angle probe, aim at the dark cross-drilled hole Φ 2 * 40 of mother metal 30mm in reference block, fine setting K value or refraction angle, making display depth is 30mm, K value calibration completes.(also can adopt other CSK-1A carbon steel test block to test, then utilize velocity of sound correction K value).
D. making this example of DAC curve take test block that nickel-base alloy (N08810) mother metal is 70mm and introduces the making flow process of DAC curve as example.Pressing " curve " key, then press making key, there is prompting in instrument:
" please use gate lock test point! "
The prompting laggard waveform sample phase that enters that disappears.There is test point 01 in the screen upper right corner, and flicker, as shown in Figure 4:
In the reference block that is 70mm at nickel-base alloy (N08810) thickness by probe placement, the cross-drilled hole of finding different depth φ 2 * 40 in test block returns wave reflection, for example first look for the hole that 10mm is dark, the probe alignment dark hole of 10mm, first on screen, find the waveform in this hole to show, by directionkeys, move gate lock echo, press " automatic gain " key this echo is adjusted to 80% height, move forward and backward probe and find the high reflection wave of this Kongzui, press " crest memory ", the highest echo of record, presses " determining " key, finishes the sampling of first.
It is 02 that the top-right test point of instrument is jumped automatically, find out according to this in the manner described above the highest echo of institute's gaging hole and record, General Requirements is got the degree of depth of deep hole, generally be greater than measured workpiece thickness, after last point sampling completes, press again once " confirmation " instrument prompting: " having determined curve? " if determined, curve is by " confirmation ", otherwise returns and continue to make curve by other any key.
After mother metal DAC curve plotting completes, after the same method, weld seam DAC curve plotting is completed, respectively two DAC curves are kept in the middle of different passages.Can utilize the mother metal DAC curved channel completing, on butt welded seam, each cross-drilled hole is tested, and the deviate of record and mother metal DAC curve, determines whether the requirement that meets 4730 appendix N.
E. reference block depth capacity cross-drilled hole signal to noise ratio (S/N ratio) test
Probe is aimed at respectively to mother metal h=T-10mm and weld seam center h=T-5mm cross-drilled hole, its the highest echo height is adjusted to all over the screen high by 60%, gather respectively its waveform, can be on-the-spot or import to test maximum signal to noise ratio in the middle of computer software (maximum signal to noise ratio with reference to reflecting body than the ratio of the average crystal grain noise in corresponding sensing range, average crystal grain noise refers to the average crystal grain noise level in the certain limit of particular detection depth H max, generally get Hmax ± 5mm), by weld seam center, the important indicator that maximum noise that φ 2 * 40 obtains is evaluated as the ultrasonic property examined is set simultaneously.
What in the utility model, be not specifically noted is prior art, or just can realize by prior art, and should be understood that described in the utility model, concrete case study on implementation, only for better case study on implementation of the present utility model, is not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be as technology category of the present utility model.
Claims (3)
1. the reference block detecting for nickel-base alloy welding line ultrasonic, comprises that thickness is the mother metal (1) of T, is characterized in that:
Described mother metal (1) front side arranges weld seam (2), on weld seam (2), have three above the first cross-drilled holes (3) and the second cross-drilled hole (4) under first cross-drilled hole (3) being positioned at bottom from top to bottom, distance between adjacent two the first cross-drilled holes (3) is not less than 12mm, and described the second cross-drilled hole (4) is T-5mm to the distance of mother metal (1) upper surface;
Three the 3rd above cross-drilled holes (5) are set on described mother metal (1) from top to bottom, and the 3rd described cross-drilled hole (5) is that first term is the arithmetic progression that 10mm, tolerance are 20mm with the distance of mother metal (1) upper surface;
Described weld seam (2), the first cross-drilled hole (3) and the second cross-drilled hole (4) are positioned at the same side of mother metal (1), and the 3rd cross-drilled hole (5) is positioned at the opposite side of mother metal (1);
Described mother metal (1) right-hand member arranges radius and is respectively the first circular arc piece (6) of 50mm and the second circular arc piece (7) that radius is 25mm, the first described circular arc piece (6) is positioned at the rear of the second circular arc piece (7), and the thickness sum of the first circular arc piece (6) and the second circular arc piece (7) equates with the width of mother metal (1).
2. the reference block detecting for nickel-base alloy welding line ultrasonic according to claim 1, is characterized in that: described the first cross-drilled hole (3) is that first term is the arithmetic progression that T/4, tolerance are T/4 with the distance of mother metal (1) upper surface.
3. the reference block detecting for nickel-base alloy welding line ultrasonic according to claim 1 and 2, is characterized in that: the large groove of the 3rd described cross-drilled hole (5) line of centres and weld seam (2) edge is tangent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248985.5U CN203894200U (en) | 2014-05-15 | 2014-05-15 | Reference block for ultrasonic detection of nickel base alloy weld |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248985.5U CN203894200U (en) | 2014-05-15 | 2014-05-15 | Reference block for ultrasonic detection of nickel base alloy weld |
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| CN203894200U true CN203894200U (en) | 2014-10-22 |
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| CN201420248985.5U Expired - Lifetime CN203894200U (en) | 2014-05-15 | 2014-05-15 | Reference block for ultrasonic detection of nickel base alloy weld |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120771A (en) * | 2017-12-26 | 2018-06-05 | 北京有色金属研究总院 | Reference block and preparation method for ultrasound detection microstructure of composite uniformity |
| CN109187767A (en) * | 2018-08-16 | 2019-01-11 | 南京宝色股份公司 | A kind of reference block group and its application method for Titanium Alloy Welds ultrasound detection |
| CN109781860A (en) * | 2018-10-31 | 2019-05-21 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | A kind of reference block and calibration method |
-
2014
- 2014-05-15 CN CN201420248985.5U patent/CN203894200U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120771A (en) * | 2017-12-26 | 2018-06-05 | 北京有色金属研究总院 | Reference block and preparation method for ultrasound detection microstructure of composite uniformity |
| CN109187767A (en) * | 2018-08-16 | 2019-01-11 | 南京宝色股份公司 | A kind of reference block group and its application method for Titanium Alloy Welds ultrasound detection |
| CN109781860A (en) * | 2018-10-31 | 2019-05-21 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | A kind of reference block and calibration method |
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