CN106323207A - Composite billet weld fusion depth detecting device and method - Google Patents
Composite billet weld fusion depth detecting device and method Download PDFInfo
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- CN106323207A CN106323207A CN201610746547.5A CN201610746547A CN106323207A CN 106323207 A CN106323207 A CN 106323207A CN 201610746547 A CN201610746547 A CN 201610746547A CN 106323207 A CN106323207 A CN 106323207A
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- composite billet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a composite billet weld fusion depth detecting device and method, and belongs to the technical field of steel production. The device comprises a composite billet, a probe I is placed on one side of a seam of the composite billet, a probe II is placed on the other side of the seam of the composite billet, the probe I and the probe II are transverse wave oblique probes, have the same K value and are placed in a V shape, the center connecting line of the probe I and the probe II is perpendicular to the direction of the seam, the probe I transmits acoustic wave, and the probe II receives acoustic wave. The double transverse wave oblique probes are connected in the V shape, the depth of the seam is detected in a one-transmitting one-receiving mode, and the probes can only receive seam defects or reflection echo of the root arc surface of the seam, so that the influence of roughness is little, the signal-to-noise ratio is high, the echo at the root of the seam is distinguished clearly, the fusion depth positioning is accurate, and the measurement precision is high.
Description
Technical field
The present invention relates to a kind of composite billet weld penetration detection apparatus and method, belong to technical field of steel production, especially
It is applicable to the ultrasound detection of weldment.
Background technology
Owing to being limited by conticaster ability, the continuous casting billet that smelter produces has certain specification, when enterprise receives greatly
When thickness or the bigger steel plate order of substance, limit than with blank substance by compression, generally use steel ingot or composite billet to produce.Its
In, composite billet be use two block casting bases be superimposed together, blank faying face through milling machine process, figuring of surface cleaning, combination after,
Under vacuum four limits being carried out vacuum electron beam welding, the depth of weld typically requires and reaches more than 30mm, certain to ensure
Intensity, it is to avoid ftracture in the operation of rolling and cause air to immerse faying face and cause Laminated steel, so the inspection of butt welded seam fusion penetration
Survey particularly significant.Owing to composite billet thickness is relatively big, the airtight welding of surrounding, it is impossible to employing direct-vision method measurement weld penetration, therefore,
The most conventional detection means is ultrasound detection.
The problem being primarily present in existing ultrasound detection is: when one, using normal probe detection, the degree of accuracy of testing result
Relatively low, reason is, after strand Combination Welding, upper and lower surface exists continuous casting oscillation mark, oxide skin etc., uses from composite billet upper surface
Normal probe detects, and detection faces reconditioning is the most difficult, and it cannot be guaranteed that reconditioning face and the depth of parallelism of faying face；Two, due to strand group
Closing welding to need, strand side needs processing, therefore has part producer to use monocline probe to detect in strand side, but
Still having problems during use, analyze reason and be, monocline probe carries out weld penetration detection from strand side, owing to side is thick
Rugosity is big, and SATT is serious, and strand faying face is through milling machine processing and reconditioning, the gap≤0.5mm of faying face, weld seam root
Portion's arc radius is little, and the unfused district of faying face is perpendicular to surrounding detection faces, uses monocline probe, root of weld reflecting acoustic pressure in the same direction
Little, instrument display echo height is little, and the roughness of combinatorial surface produces too and reflects in the same direction simultaneously, forms grass-like echo, impact
The judgement of butt welded seam root echo, even cannot detect root of weld echo, thus affect the measurement of weld penetration.
Summary of the invention
For solving above technical deficiency, the invention provides a kind of composite billet weld penetration detection apparatus and method,
Using shear wave double oblique probe V-arrangement formula to connect, use one one to receive working method detection weld penetration, probe can only accept weld seam and lack
Falling into or the reflection echo of root of weld cambered surface, affected by roughness little, signal to noise ratio is high, and root of weld echo-recognition is clear, fusion penetration
Accurate positioning, certainty of measurement is high.
Technical scheme is as follows: a kind of composite billet weld penetration detection device, including composite billet, and described composite billet
Probe one is placed in the side of upper weld seam, and on composite billet, the opposite side of weld seam places probe two, and described probe one and probe two are all
Transverse wave double-bevel detector, the K value of probe one and probe two is identical, and described probe one and probe two V-shaped modes are placed, and pops one's head in one and spy
The line of centres of two is vertical with bead direction, and described probe one launches sound wave, probe two reception sound waves.
Technical scheme also includes: the operating frequency of described probe one and probe two is 2.5～5MHz, probe one
Being 13*13mm with the piezoelectric chip size of probe two, the K value of probe one and probe two is 1.
Technical scheme also includes: the operating frequency of described probe one and probe two is 2.5～5MHz, probe one
Being 13*13mm with the piezoelectric chip size of probe two, the K value of probe one and probe two is 1.5.
Technical scheme also includes: the operating frequency of described probe one and probe two is 2.5～5MHz, probe one
Being 13*13mm with the piezoelectric chip size of probe two, the K value of probe one and probe two is 2.
A kind of composite billet weld penetration detection method, mainly comprises the steps that
Step one, selects the transverse wave double-bevel detector that two K values are identical, is individually identified as No. 1 probe and No. 2 probes；
Step 2, is set as the working method of " one one receipts " by ultrasonic reflectoscope；
Step 3, relative V-shaped mode of being popped one's head in No. 2 by No. 1 probe is placed in the both sides of weld seam on composite billet, makes No. 1 probe and 2
Number probe line of centres vertical weld direction；
Step 4, fixes No. 1 probe, mobile No. 2 probes, finds at position one according to the display of ultrasonic reflectoscope in position one
Root of weld maximum echo；
Step 5, fixes No. 2 probes, mobile No. 1 probe, finds at position two according to the display of ultrasonic reflectoscope in position two
Root of weld maximum echo；
Step 6, repeatable operation step 4 and step 5, determine No. 1 probe and the optimum position of No. 2 probes, visit according to ultrasound wave
Root of weld maximum echo on composite billet is found in the display hindering instrument, and the degree of depth of described maximum echo is exactly the fusion penetration of weld seam.
Technical scheme also includes: in described step one, first selects the angle probe mark of a 2.5P13*13K1
Knowledge is No. 1 probe, regulates the scanning speed of ultrasonic reflectoscope in CSK-IA test block, measures the K value of No. 1 probe；The most again
Select 2.5P13*13K1 probe, measure the K value of probe, probe that selection K value is identical with No. 1 probe K value, be designated No. 2
Probe.
Technical scheme also includes: pop one's head in No. 1 and No. 2 probe placement are in CSK III A test block, and regulation is super
Sonic analyzer, makes the hyphen hole wave height of degree of depth 30mm position reach 50%, then gain 20dB.
Technical scheme also includes: after described step 6, when needs detection weld seam internal soundness, and No. 1 spy
Head and No. 2 probes move to Weld pipe mill simultaneously, observe ultrasonic reflectoscope display information, determine weldering according to the waveform of echo
Whether seam is internal exists discontinuity.
Technical scheme also includes: described ultrasonic reflectoscope is A type pulse reflection ultrasonic reflectoscope.
The invention has the beneficial effects as follows: owing to the program using one one receive working method, connect two of V-arrangement mode
Probe, a probe transmitting sound wave, sound wave, in the incorgruous reflection in root of weld arc top, is received, due to weld seam root by another probe
The circular arc interface that portion is, incorgruous reflecting acoustic pressure is big, and the reflection sound wave that uncombined face produces is blocked by gap, only weld defect
The reflection produced with the root of weld could be accepted, so detection sensitivity is high, root of weld echo-recognition is clear, and fusion penetration positions
Accurately, certainty of measurement is high.
Accompanying drawing explanation
Fig. 1 is the Cleaning Principle schematic diagram of the present invention.
Fig. 2 is the crack detector display schematic diagram of the present invention.
Fig. 3 is the scheme of installation of the present invention.
Fig. 4 is that the probe of the present invention moves schematic diagram.
In figure: 1, probe one, 2, probe two, 3, composite billet.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
As shown in Figures 1 to 4, a kind of composite billet weld penetration detection device of the present invention, use shear wave double oblique probe V-arrangement
Formula connects, and uses one one to receive working method detection weld penetration.Sound wave only could be received at weld defect or the root of weld,
Will not be affected by roughness, detection sensitivity is high, and root of weld echo-recognition is clear, fusion penetration accurate positioning, and certainty of measurement is high.
In the present invention, on composite billet 3, probe 1 is installed in the side of weld seam, and on composite billet 3, the opposite side of weld seam is installed and visited
22, probe one and probe two are all transverse wave double-bevel detectors, and the K value (namely refraction angle) of probe one and probe two is identical, pop one's head in
One is arranged with probe two V-shaped modes, and probe one is vertical with bead direction with the line of centres of probe two, a transmitting sound of popping one's head in
Ripple, probe two reception sound wave, i.e. use one one working method received.
The step of the composite billet weld penetration detection method of the present invention includes:
1, verification or qualified A type pulse reflection ultrasonic reflectoscope are used；
2, selecting a 2.5P13*13K1 angle probe, identifying this probe is No. 1 probe.CSK-IA test block regulates ultrasound wave
The scanning speed of crack detector, measures the K value of No. 1 probe；
3, take nominally identical 2.5P13*13K1 probe again, measure the K value of probe, select the spy that K value is identical with No. 1 probe K value
Head, is designated No. 2 probes；
4, No. 1 is popped one's head in and No. 2 probe placement are in CSK III A test block, regulate ultrasonic reflectoscope, make degree of depth 30mm position
Hyphen hole wave height reach 50%, then gain 20dB；
5, the working method of amendment ultrasonic reflectoscope is " one one receipts "；
6, during detection, being placed in by No. 1 probe from weld seam about 30mm position, No. 2 probes are placed in weld seam offside from weld seam about 30mm's
Position, the two the most V-shaped modes of probe, and make the line of centres vertical weld direction of two probes；
7, fixing No. 1 probe, around, corner-moving 2 probe, the sound wave that No. 1 probe is launched needs by arc at the bottom of weld seam
The reflection in face, No. 2 probes receive this echo.(if now No. 2 probes cannot receive ultrasound wave, just should the most forward or to
Rear movement 1 probe, it is ensured that No. 2 probes receive ultrasound wave.) there is certain diameter, as long as No. 2 probes receive sound due to sound wave
Ripple will form a ripple in instrument, as shown in Figure 2.The acoustic pressure of sound wave axis centre is maximum, owing to now No. 1 probe is launched
The not necessarily reflection at cambered surface center bottom weld seam of beam axis center, sound wave will dissipate, so No. 2 probes connect
The reflecting acoustic pressure received is not maximum.But probe has the dimensions, effectively receive in acoustical range at No. 2 probes, move and visit
Head can find instrument echo maximum of points.
8, according to step 7, No. 2 probes are fixed, around, corner-moving 1 probe, when sound wave centrage gradually connects
Bottom nearly weld seam during cambered surface center, the acoustic pressure of No. 2 probe receptions is gradually increased, and the echo that instrument shows also can be gradually increased.When 1
Number sound wave centrage that probe occurs is just at weld seam cambered surface center, and the most now echo is concentrated most, and scattered quantum is little.If it is suitable
When mobile No. 2 probes, pop one's head in for No. 2 and just can receive this and most arrive echo at the bottom of this arc, the most really have found instrument and show
Maximum echo.
9, repeatable operation step 7 and step 8 determine the optimum position of two probes, find real root of weld maximum to return
Ripple, the echo degree of depth that the most now instrument shows is exactly the degree of depth of weld seam.The reason moving repeatedly No. 1 and No. 2 probe is needed to be,
At first, the sound wave that No. 1 probe sends may get to the sidepiece of weld seam cambered surface, and first mobile No. 2 probes allow it receive
Sound wave.The most suitably moving No. 1 and No. 2 probe, find maximum echo, the beam axis of i.e. No. 1 probe just gets to the root of weld
Cambered surface center, arrives No. 2 probes through the center of cambered surface.
10, when needs detection weld seam internal soundness, No. 1 probe and No. 2 probes move to Weld pipe mill simultaneously, scope
Device display information, determines whether there is discontinuity inside weld seam.Specifically, when the echo consecutive hours that crack detector shows, then
Illustrate it is continuous print inside weld seam；If echo is discontinuous, then also it is discontinuous inside explanation weld seam.
In the present invention, if detection being needed checking especially, 2.5P13*13K1.5 or 2.5P13*13K2 can be changed and visit
Head, specifically, frequency probe can select in 2.5～5MHz, when testing staff's Precision measurement or prescription are higher, selects
The probe that frequency is big, other operates with reference to 2-10 step.
The above, be only presently preferred embodiments of the present invention, and the present invention not does any pro forma restriction, all at this
Made any amendment, equivalent and improvement etc. within the spirit of invention and principle, be should be included in protection scope of the present invention
Within.
Claims (9)
1. a composite billet weld penetration detection device, including composite billet (3), it is characterised in that: the upper weld seam of described composite billet (3)
Side place probe one (1), the opposite side of the upper weld seam of composite billet (3) places probe two (2), described probe one (1) and probe
Two (2) is all transverse wave double-bevel detector, and probe one (1) is identical with the K value of probe two (2), and described probe one (1) and probe two (2) are in V
Shape mode is placed, and probe one (1) is vertical with bead direction with the line of centres of probe two (2), described probe one (1) transmitting sound
Ripple, probe two (2) reception sound wave.
2. composite billet weld penetration detection device as claimed in claim 1 a kind of, it is characterised in that: described probe one (1) and
The operating frequency of probe two (2) is 2.5～5MHz, and the piezoelectric chip size of probe one (1) and probe two (2) is 13*13mm, visits
The K value of first (1) and probe two (2) is 1.
3. composite billet weld penetration detection device as claimed in claim 1 a kind of, it is characterised in that: described probe one (1) and
The operating frequency of probe two (2) is 2.5～5MHz, and the piezoelectric chip size of probe one (1) and probe two (2) is 13*13mm, visits
The K value of first (1) and probe two (2) is 1.5.
4. composite billet weld penetration detection device as claimed in claim 1 a kind of, it is characterised in that: described probe one (1) and
The operating frequency of probe two (2) is 2.5～5MHz, and the piezoelectric chip size of probe one (1) and probe two (2) is 13*13mm, visits
The K value of first (1) and probe two (2) is 2.
5. a composite billet weld penetration detection method, mainly comprises the steps that
Step one, selects the transverse wave double-bevel detector that two K values are identical, is individually identified as No. 1 probe and No. 2 probes；
Step 2, is set as the working method of " one one receipts " by ultrasonic reflectoscope；
Step 3, relative V-shaped mode of being popped one's head in No. 2 by No. 1 probe is placed in the both sides of the upper weld seam of composite billet (3), makes No. 1 probe
Line of centres vertical weld direction with No. 2 probes；
Step 4, fixes No. 1 probe, mobile No. 2 probes, finds at position one according to the display of ultrasonic reflectoscope in position one
Root of weld maximum echo；
Step 5, fixes No. 2 probes, mobile No. 1 probe, finds at position two according to the display of ultrasonic reflectoscope in position two
Root of weld maximum echo；
Step 6, repeatable operation step 4 and step 5, determine No. 1 probe and the optimum position of No. 2 probes, visit according to ultrasound wave
The upper root of weld maximum echo of composite billet (3) is found in the display hindering instrument, and the degree of depth of described maximum echo is exactly the fusion penetration of weld seam.
6. a kind of composite billet weld penetration detection method as claimed in claim 5, it is characterised in that: in described step one, first
First select the angle probe of a 2.5P13*13K1 to be designated No. 1 probe, CSK-IA test block regulates sweeping of ultrasonic reflectoscope
Retouch speed, measure the K value of No. 1 probe；Select 2.5P13*13K1 probe the most again, measure the K value of probe, select K value and
Probe that No. 1 probe K value is identical, it is designated No. 2 probes.
7. a kind of composite billet weld penetration detection method as claimed in claim 6, it is characterised in that: by No. 1 probe and No. 2 spies
Head is placed in CSK III A test block, regulates ultrasonic reflectoscope, makes the hyphen hole wave height of degree of depth 30mm position reach 50%, then
Gain 20dB.
8. a kind of composite billet weld penetration detection method as claimed in claim 5, it is characterised in that: after described step 6,
When needs detection weld seam internal soundness, No. 1 probe and No. 2 probes move to Weld pipe mill simultaneously, observe ultrasonic reflectoscope
Display information, determines whether there is discontinuity inside weld seam according to the waveform of echo.
9. a kind of composite billet weld penetration detection method as claimed in claim 5, it is characterised in that: described ultrasonic reflectoscope
It it is A type pulse reflection ultrasonic reflectoscope.
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| CN201610746547.5A CN106323207A (en) | 2016-08-29 | 2016-08-29 | Composite billet weld fusion depth detecting device and method |
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| CN201610746547.5A CN106323207A (en) | 2016-08-29 | 2016-08-29 | Composite billet weld fusion depth detecting device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108088406A (en) * | 2018-01-09 | 2018-05-29 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of shock wave tests the speed with effective distance measuring method between pressure sensor |
| CN109623113A (en) * | 2019-01-15 | 2019-04-16 | 南昌航空大学 | A kind of Detecting Welding Seam method and device based on binaural effect |
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| CN108088406A (en) * | 2018-01-09 | 2018-05-29 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of shock wave tests the speed with effective distance measuring method between pressure sensor |
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| CN109623113A (en) * | 2019-01-15 | 2019-04-16 | 南昌航空大学 | A kind of Detecting Welding Seam method and device based on binaural effect |
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