CN101960304A - Ultrasonic flaw detection method for cast stick and ultrasonic flaw detection device - Google Patents
Ultrasonic flaw detection method for cast stick and ultrasonic flaw detection device Download PDFInfo
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- CN101960304A CN101960304A CN2008801275127A CN200880127512A CN101960304A CN 101960304 A CN101960304 A CN 101960304A CN 2008801275127 A CN2008801275127 A CN 2008801275127A CN 200880127512 A CN200880127512 A CN 200880127512A CN 101960304 A CN101960304 A CN 101960304A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/262—Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0421—Longitudinal waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/056—Angular incidence, angular propagation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/106—Number of transducers one or more transducer arrays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
- G01N2291/2626—Wires, bars, rods
Abstract
This object aims to provide a ultrasonic flaw detection method that uses a longitudinal wave as an incident wave for the inspection of a cast stick with a circular cross section and can inspect the overall region of the cast stick. When a plurality of phased array type probes (1) and (2) are arranged at a predetermined angle (alpha) in a circumferential direction of a cast stick (S) with a circular cross section for ultrasonic flaw detection, the arrangement is made for one arbitrary phased array type probe (1) so that unexamined regions (1A) and (1B) with a longitudinal inclined angle wave and a longitudinal vertical wave of the arbitrary phased array type probe (1) can be complemented with regions examined by the application of a longitudinal inclined angle wave and a longitudinal vertical wave of the other arbitrary phased array type probes (2).
Description
Technical field
The present invention relates to be the UT (Ultrasonic Testing) inspection method of circular cast rod and the UT (Ultrasonic Testing) testing fixture that is used to implement this inspection method at the cross section.
Background technology
In general, the continuous casting rod is that the ingot bar of the length of, prism-shaped cylindric by being cast as by liquation or hollow columnar is made.In casting method, floating type casting, direct chill casting (DC casting) method, the hot top of gas-pressurization type continuous casting process etc. are arranged.For the continuous casting rod that casts out, remove the uneven layer on the surface that when plastic working, can cause the crackle generation and (with reference to patent documentation 1) checked on surface after removing peripheral part and inherent vice.
In the manufacturing process of the continuous casting rod that patent documentation 1 is put down in writing, remove the nondestructive inspection operation that is provided with the inside of realizing between the operation by the UT (Ultrasonic Testing) inspection at continuous casting working procedure and periphery.The UT (Ultrasonic Testing) inspection has the following advantages: have the Supreme People's Procuratorate's output capacity for inherent vices such as crackles, in addition by detected electric signal is handled, carry out the X ray of Flame Image Process compares with needs, can easily implement the automatic judgement of defective, thereby realize checking the high stable inspection of precision.
Under the situation that the defective of the near surface of cast rod is checked, if use the vertical ripple of compressional wave to be used as incident wave, then bottorm echo can be detected as the false defect echo, therefore use oblique angle ripple (inclined angle wave) to be used as incident wave in the past.
Patent documentation 1: TOHKEMY 2004-209516 communique
Summary of the invention
But, if obtaining the words of oblique angle ripple, the probe of the UT (Ultrasonic Testing) by in the past (probe) can become shear wave, if implement the inspection of near surface by the velocity of sound shear wave slower than compressional wave, then because therefore time axial length exist the shortcoming that detects the false defect echo easily.
In addition, be circular cast rod for the cross section, if check Zone Full, then need to make probe along the rotating in a circumferential direction of continuous casting rod by probe in the past, perhaps need along circumferential a plurality of UT (Ultrasonic Testing) inspections of configuration with probe.In addition, it is difficult disposing a plurality of probes accurately, and owing to can't be configured accurately, therefore also has difficult point aspect the inspection precision.
The present invention finishes in view of the aforementioned technical background, and its purpose is to provide a kind of and uses compressional wave to be used as incident wave for circular cast rod and the UT (Ultrasonic Testing) inspection method of the cast rod that can check Zone Full and the UT (Ultrasonic Testing) testing fixture that is used to implement this inspection method for the cross section.
That is, the present invention has the formation that following [1]～[9] are put down in writing.
[1] a kind of UT (Ultrasonic Testing) inspection method of cast rod is characterized in that,
When along the cross section a plurality of phase array probes that circumferentially dispose at a predetermined angle for circular cast rod pop one's head in and carry out UT (Ultrasonic Testing) when checking,
With respect to any one phase array probe probe, other phase array probe probe is configured to: described any one phase array probe probe based on the vertical ripple of compressional wave oblique angle ripple (longitudinal inclined anglewave) (longitudinal vertical wave) with compressional wave and (completion) supplied in the inspection area of being popped one's head in by other phase array probes in the not inspection area that forms that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple.
[2] according to the UT (Ultrasonic Testing) inspection method of preceding paragraph 1 described cast rod, wherein,
Two phase array probe probes are configured to satisfy simultaneously the arrangement angles (α) of following two formulas:
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4
180°-[3θ
3+3(180°-2θ
2)]≥θ
4
Wherein,
θ
2: effective angle of bevel of phase array probe probe;
θ
3: the central angle of OP;
θ
4: 1/2 of the central angle in the dead band (dead zone) of the vertical incidence ripple of phase array probe probe;
O: the incidence point of the vertical incidence ripple of phase array probe probe;
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum.
[3] according to the UT (Ultrasonic Testing) inspection method of preceding paragraph 2 described cast rods, wherein,
Two phase array probe probes are configured to incident wave towards the below.
[4] according to the UT (Ultrasonic Testing) inspection method of each the described cast rod in the preceding paragraph 1 to 3, wherein,
A plurality of phase array probes probe is configured in horizontal casting the mold outlet near,
The continuous casting rod that continuous casting is gone out carries out the UT (Ultrasonic Testing) inspection continuously.
[5] according to the UT (Ultrasonic Testing) inspection method of preceding paragraph 4 described cast rods, wherein,
Hinder cooling-water flow by the continuous casting rod being inserted into loosely leave in the through hole of weir shape body that the outlet of described mold is configured in its downstream, described phase array probe probe is configured to and the contacted state of chilled water that flows and hindered.
[6] a kind of UT (Ultrasonic Testing) testing fixture of cast rod is that along the cross section a plurality of phase array probe probes of circumferentially disposing of circular cast rod, the UT (Ultrasonic Testing) testing fixture of described cast rod are characterised in that,
Pop one's head in for any one phase array probe, other phase array probe is popped one's head in to be configured to: the not inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of described any one phase array probe probe is supplied by the inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of other phase array probes probes.
[7] according to the UT (Ultrasonic Testing) testing fixture of preceding paragraph 6 described cast rods, wherein,
Two phase array probe probes are configured to satisfy simultaneously the arrangement angles (α) of following two formulas:
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4
180°-[3θ
3+3(180°-2θ
2)]≥θ
4
Wherein,
θ
2: effective angle of bevel of phase array probe probe;
θ
3: the central angle of OP;
θ
4: 1/2 of the central angle in the dead band of the vertical incidence ripple of phase array probe probe;
O: the incidence point of the vertical incidence ripple of phase array probe probe;
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum.
[8] a kind of flowing water manufacture method of forged article, the cross section that casts out continuously for the mold outlet from horizontal casting is circular continuous casting rod, cut into short material, peeling, thermal treatment in any order, and then then forge, this manufacture method is characterised in that, after just casting out or arbitrarily, carry out the UT (Ultrasonic Testing) inspection between the operation
Carry out described UT (Ultrasonic Testing) inspection in the following manner: along a plurality of phase array probe probes of circumferentially disposing at a predetermined angle of cast rod, pop one's head in for any one phase array probe, other phase array probe is popped one's head in to be configured to: the not inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of described any one phase array probe probe is supplied by the inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of other phase array probes probes.
[9] according to the flowing water manufacture method of preceding paragraph 8 described forged articles, wherein,
Described UT (Ultrasonic Testing) inspection is undertaken by the arrangement angles (α) that two phase array probe probes are configured to satisfy simultaneously following two formulas:
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4
180°-[3θ
3+3(180°-2θ
2)]≥θ
4
Wherein,
θ
2: effective angle of bevel of phase array probe probe;
θ
3: the central angle of OP;
θ
4: 1/2 of the central angle in the dead band of the vertical incidence ripple of phase array probe probe;
O: the incidence point of the vertical incidence ripple of phase array probe probe;
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum.
According to above-mentioned [1] described UT (Ultrasonic Testing) inspection method, be circular cast rod for the cross section, by the vertical ripple of phase array probe probe incident longitudinal wave oblique angle ripple, can carry out the UT (Ultrasonic Testing) inspection to the Zone Full that comprises near surface with compressional wave.In addition, by the fast compressional wave of the velocity of sound, the false defect echo is difficult for being apparent on the flaw detection picture, and can detect a flaw to big scope by a probe, therefore can obtain high inspection precision.
According to above-mentioned [2] described UT (Ultrasonic Testing) inspection method, can derive the probe arrangement angles (α) of the not inspection area each other that can supply two phase array probe probes.
According to above-mentioned [3] described UT (Ultrasonic Testing) inspection method,, therefore can suppress the generation of false defect signal, thereby can carry out high-precision flaw detection owing to before the ultrasound wave of water transmission arrives the water surface, will decay fully.
According to above-mentioned [4] described UT (Ultrasonic Testing) inspection method, owing to carry out horizontal casting and UT (Ultrasonic Testing) inspection continuously, so the checking efficiency height, and the operation after check result can being reflected in, perhaps feed back in casting condition.And, owing to check that object part does not have end face, therefore there is not the dead band in the end face yet, all checked for the material end face that after inspection, cuts off the weak point that forms.
According to above-mentioned [5] described UT (Ultrasonic Testing) inspection method, can carry out the UT (Ultrasonic Testing) inspection mutually continuously with horizontal casting by simple device.
According to above-mentioned [6], [7] described UT (Ultrasonic Testing) testing fixture, can implement above-mentioned UT (Ultrasonic Testing) inspection.
According to the flowing water manufacture method of above-mentioned [8], [9] described forged article,, therefore can produce high-quality forged article efficiently owing between operation, implement above-mentioned UT (Ultrasonic Testing) inspection.
Description of drawings
Fig. 1 is illustrated in the key diagram of cross section for the not inspection area of the phase array probe probe in the UT (Ultrasonic Testing) inspection of circular founding materials;
Fig. 2 is hyperacoustic propagation in the UT (Ultrasonic Testing) inspection of expression founding materials of the present invention and the figure that the arrangement angles of two phase array probes probe is described;
Fig. 3 is the enlarged drawing of the major part of Fig. 2;
Fig. 4 A is the front view that schematically shows an embodiment of UT (Ultrasonic Testing) testing fixture of the present invention;
Fig. 4 B is the side view of the UT (Ultrasonic Testing) testing fixture of Fig. 4 A;
Fig. 5 is the stereographic map that comprises partial cross section that schematically shows other embodiments of UT (Ultrasonic Testing) testing fixture of the present invention;
Fig. 6 A be added the inspection operation of using UT (Ultrasonic Testing) testing fixture of the present invention, from the process flow chart of the flowing water manufacture method of the forged article that is casted into forging;
Fig. 6 B be added the inspection operation of using UT (Ultrasonic Testing) testing fixture of the present invention, from the process flow chart of the flowing water manufacture method of the forged article that is casted into forging;
Fig. 6 C be added the inspection operation of using UT (Ultrasonic Testing) testing fixture of the present invention, from the process flow chart of the flowing water manufacture method of the forged article that is casted into forging.
Description of reference numerals
1,2 phase array probes probe
1A, the 2A zone (not inspection area) outside scanning
1B, 2B dead band (not inspection area)
10,40 UT (Ultrasonic Testing) testing fixtures
33 molds
35 chilled waters
41 through holes
42 weir shape bodies
S cast rod (continuous casting rod)
Embodiment
Phase array probe probe used in the present invention is that a plurality of probes dispose (the probe piece (probe block)) that forms side by side, owing to control focus in the electronics mode, therefore in the flaw detection process, can implement poly Jiao (combination of normal beam testing and oblique angle flaw detection), thereby can check the zone of broadness.In addition, owing to be difficult to be presented on the flaw detection picture, therefore check the precision height at false defect echo under the situation of using the velocity of sound fast compressional wave than shear wave.Owing to can detect a flaw to big scope by a probe piece, thereby the decline of the inspection precision that decline caused of the positional precision that produces can not occur in the past along a plurality of single probe of circumferential configuration the time, therefore can obtain high inspection precision.
Above-mentioned phase array probe probe can be detected a flaw to the zone of broadness by compressional wave oblique angle ripple (comprising vertical ripple), but even so still can produce not inspection area inevitably.In the present invention, be circular cast rod for the cross section, along circumferentially popping one's head in, by not inspection area each other being supplied and can spreading all over the Zone Full that comprises near surface and check with a plurality of phase array probes of predetermined angle configurations.
Fig. 1 is the example that has disposed two phase array probe probe (1) (2) for the cross section for circular cast rod (S).
For first phase array probe probe (1), (1A) (1A) is the zone outside scanning that has broken away from the maximum scan scope, (1B) be owing to incident light vertically incident the time Bottom echo that manifests and the flaw echo dead band that can't classify and produce.These zones (1A) (1A) (1B) are the not inspection areas that can't detect a flaw by first phase array probe probe (1).Though above-mentioned zone (1A) outside scanning (1A) can diminish by enlarging sweep limit, is circular owing to check the cross section of object, therefore can't fully eliminate.In addition, above-mentioned dead band (1B) also is the zone that can produce inevitably.Equally, for second phase array probe probe (2), (2A) (2A) is the zone outside scanning that has broken away from the maximum scan scope, is the dead band that causes owing to the false defect echo (2B), is the not inspection area that can't detect a flaw by the second phase array probe probe (2).
According to Fig. 1, do not repeat if be configured to the not inspection area of first phase array probe probe (1) and second phase array probe probe (2), then can check Zone Full.Particularly, if guaranteed first phase array probe probe (1) the zone (1A) outside the scanning and second phase array probe probe (2) the part of the surplus between the zone (2A) outside the scanning (margin) (C) and second phase array probe probe (2) in the zone (2A) outside the scanning with pop one's head in surplus partly (D) between the dead band (1B) of (1) of first phase array probe, then can check Zone Full.
Below, according to above-mentioned consideration method, the method for the condition that the not inspection area of obtaining phase array probe probe (1) (2), some surplus part (D) 〉=0, two in surplus part (C)=0 does not overlap is described with reference to the ultrasonic wave propagation path figure of Fig. 2.
Fig. 2 has represented the state of surplus part (C)=0, and the zone (2A) outside scanning at zone (1A) outside the scanning and second phase array probe probe (2) of first phase array probe probe (1) is connected with the state that does not overlap.In addition, two phase array probe probe (1) (2) have identical functions, therefore use identical Reference numeral to illustrate.
Reference numeral among Fig. 2 is as follows.In addition, in Fig. 2, only represent the travel path of the left-half of cast rod (S), omitted the diagram of the travel path of right half part.
α: the arrangement angles of two phase array probe probes
θ
1: the maximum scan angle of phase array probe probe
θ
2: effective angle of bevel of phase array probe probe
θ
3: the central angle of OP
θ
4: 1/2 of the central angle in the dead band that the vertical incidence waveguide of being popped one's head in by phase array probe causes
θ
5: the central angle of surplus part (D)
O: the incidence point of the vertical incidence ripple of phase array probe probe
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum
Q: pedal line
R: the radius of cast rod
According to Fig. 2, the arrangement angles (α) of two phase array probes probe (1) (2) of surplus part (C)=0 o'clock is formula (i), and for the dead band (1B) of first phase array probe probe (1) does not overlap the central angle (θ of dead band (1B) with the zone (1A) outside scanning of second phase array probe probe (2)
4) must satisfy formula (ii).
α＝2×(180°-2θ
2+θ
3)(i)
180°-[3θ
3+3(180°-2θ
2)]≥θ
4(ii)
Because above-mentioned formula (i) is the minimum value (α of the arrangement angles (α) of two phase array probe probe (1) (2)
Min), therefore
α
min＝2×(180°-2θ
2+θ
3)(iii)
In addition, according to formula (ii), the central angle (θ of surplus part (D)
5) be following formula (iv).
θ
5＝180°-[3θ
3+3(180°-2θ
2)]-θ
4(iv)
Because above-mentioned arrangement angles (α) can be extended to surplus part (D)=0, so the maximal value (α of arrangement angles (α)
Max) be following formula (v).
α
max＝α
min+θ
5
＝2θ
2-θ
3-θ
4(v)
Therefore, be used to check cast rod (S) Zone Full arrangement angles (α) but span satisfy following formula (ii), be minimum value (α from (iii) representing by following formula
Min) to by formula (v) Biao Shi maximal value (α
Max) scope.That is,, then can check for the Zone Full of circular cast rod (S) by pair cross-section if dispose two phase array probe probe (1) (2) according to the mode that satisfies following two formulas.
180°-[3θ
3+3(180°-2θ
2)]≥θ
4
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4
Next, the numerical value of answering the above-mentioned symbol in various of substitution is described.
Maximum scan angle (θ
1) be angle by the specification decision of phase array probe probe.
Effective angle of bevel (θ
2) be by refraction angle and above-mentioned maximum scan angle (θ
1) angle of decision, preferably consider the degree of ultrasonic attenuation and wish the size of detected defective.
With reference to Fig. 3 as can be known, the center angle (θ of OP
3) can utilize the distance (x between OP
1) and the radius (r) of cast rod (S) adopt following formula (vi) expression.
θ
3＝Sin
-1(x
1/r)(vi)
But, at the distance (x that is difficult between actual measurement OP
1) situation under because (x
1) and the size (x of phase array probe probe
2) have an x
1≈ x
2Relation, the therefore (x that can go out according to actual measurement
2) obtain (θ by following formula (vi ')
3).
θ
3＝Sin
-1(x
2/r)(vi′)
1/2 (the θ of central angle of OP that represents the size in above-mentioned dead band (1B)
4) be the size in expression dead band, can obtain by actual measurement.
Therefore, can by actual measured value, formula (iii), formula (iv), formula (vi ') decides the arrangement angles (α) of two phase array probes probe (1) (2) can checking Zone Full.
In addition, though calculate the formula that the calculating formula of above-mentioned arrangement angles (α) is based on two phase array probe probes of same specification, but under the situation of the phase array probe probe that uses different size, can obtain arrangement angles based on the incoming position of each probe, various angle.And under the situation of using the phase array probe probe more than three, the zone outside the scanning that is configured to adjacent probe does not overlap and the dead band of a probe does not overlap with the zone outside scanning of other probes and gets final product.
[example of the arrangement angles of two phase array probe probes]
At radius (r) is during the UT (Ultrasonic Testing) of the cast rod (S) of 215mm is checked, the effective angle of bevel (θ when phase array probe probe (1) (2)
2Size (the x of)=40 °, phase array probe probe (1) (2)
2) be the size (θ in 28.7mm, dead band
4) when being 17.5 °, through type (vi ') calculates (θ
3)=7.6 °.
And, according to formula (iii), formula (v), α
Min=95.2 °, α
Max=114.9 °.Therefore, if two phase array probe probe (1) (2) are arranged on arrangement angles (α): in 95.2～114.9 ° the scope, then can check to Zone Full.But, consider the swing of advancing of the cast rod (S) in the checking process, preferably avoid (α
Min) and (α
Max) and be configured in the intermediate point of above-mentioned scope or intermediate point near.
In addition, the angle that a plurality of phase array probe probes are configured to supply not inspection area each other gets final product, so the phase array probe probe also can be positioned at the optional position that makes progress in week of cast rod.But preferably, UT (Ultrasonic Testing) testing fixture (10) (40) is like that in the oblique upper of cast rod (S) configuration phase array probe probe (1) (2) as described later, and from the top incident ultrasound wave downwards.This be because: if shine ultrasound wave upward from the below, then can be by water-reflected to the ultrasound wave of cast rod (S) incident, thereby its echo detects as the false defect signal sometimes, if but incident downwards from the top, then before arriving the water surface, the ultrasound wave of overwater propagation will decay fully, thereby echo can not detected as the false defect signal, therefore can implement high-precision flaw detection.In addition, even make cast rod (S) take place that dislocation also can keep in that feeler mechanism is set and phase array probe probe (1) (2) between the situation of position relation under, since the top that probe is configured in cast rod (S) can make in the configuration restriction still less, therefore also preferred disposition is up from this point.
In addition, preferred: the distance (WD) between cast rod (S) and phase array probe probe (1) (2) is made as enough distances so that the repetition echo of surface wave does not become the false defect echo.
In addition, become the false defect signal owing to check the reflection echo with the wall of tank sometimes, therefore for fear of the false defect signal, preferably tank is enough big.Preferably: between the wall of the side face screw clamp of cast rod (S), have the distance that decays fully at the ultrasound wave of water transmission.In addition, also can be by tackling with the sound wave that elimination can cause the false defect echo to produce at tank wall configuration deadener.
In addition, in Fig. 1～Fig. 3, for convenience of explanation, directly over first phase array probe probe (1) is configured in, but this does not represent the only position of phase array probe probe (1) (2) of cast rod (S).In ultrasonic flaw detecting device described later (10) (40), the mode that becomes pedal line with (Q) of Fig. 2 and Fig. 3 disposes phase array probe probe (1) (2).
[UT (Ultrasonic Testing) testing fixture]
(first embodiment)
UT (Ultrasonic Testing) testing fixture (10) shown in Fig. 4 A and Fig. 4 B comprises tank (11) and two phase array probe probe (1) (2), checks while cast rod (S) is moved.
In tank (11), the wall of the direct of travel of cast rod (S) is provided with and is used to through hole (12) (13) that cast rod (S) is passed through, in tank (11), store water level compare with these through holes (12) (13) sufficiently high, as the water (14) of contact medium.Two phase array probes probe (1) (2) can freely regulated mode be installed in the two ends of horizontal arm (16) with angle via support (17), described horizontal arm (16) is installed in the front end of the upright arm (15) of bracing or strutting arrangement, these two phase array probes probe (1) (2) from oblique upper to below cast rod (S) the irradiation ultrasound wave that moves.Center section at the left and right directions of above-mentioned horizontal arm (15) is equipped with the profiling roller (18) that contacts with cast rod (S), by with the offset of cast rod (S) moving of control arm (15) (16) accordingly, make cast rod (S) and phase array probe probe (1) (2) have constant position all the time and concern.
Above-mentioned ultrasonic flaw detecting device (10) can irrespectively be checked the cast rod (S) in moving with the length of cast rod (S).For example, can check continuously the continuous casting rod of casting out from the mold of horizontal casting device (S) with casting speed.In addition, for the cast rod that has cut off, also can cast rod (S) be moved with predetermined speed and check by mobile device.By cast rod (S) is moved in (11) in tank, can irrespectively check with the length of checking object.Certainly, checking under the object situation littler, also can move checking that object is fixed and phase array probe is popped one's head in than tank.
Above-mentioned phase array probe probe (1) (2) are controlled by the control device outside the accompanying drawing, (S) detects a flaw to cast rod, the signal that sends from phase array probe probe (1) (2) is exported to signal processing part (20), and is carrying out being exported to ultrasonic inspection decision maker (21) after the predetermined processing.In ultrasonic inspection decision maker (21), judge that based on the signal of input zero defect and/or damage are arranged, thereby judge whether cast rod (S) is non-defective unit.In addition, if the continuous review that the continuous casting rod of casting out from the mold of horizontal casting device (S) is carried out, then except can checking efficiently, result of determination can also be fed back in casting condition, perhaps can be in advance be removed defect part after cut-out becomes fixed measure to the defect part marking and in the shearing device that is arranged at the back level (omitting diagram) by sprayer etc.In addition, also can store detected defective locations in advance, in shearing device, only cutting off to remove defect part and cut off becomes fixed measure.
In addition, in above-mentioned ultrasonic flaw detecting device (10), continuous casting rod (S) while can move and accept the UT (Ultrasonic Testing) inspection owing in checking object part, do not have end face, therefore also just do not have the dead band in the end face, the material end face that cuts off the weak point that forms after inspection all is checked through.
(second embodiment)
The UT (Ultrasonic Testing) testing fixture (10) of first embodiment uses tank, can easily make cast rod submerge in water, can guarantee that on the contact medium this point of q.s be favourable.
But UT (Ultrasonic Testing) inspection method of the present invention also can not used tank, is supplied to the chilled water of cast rod to check but utilize from the mold of horizontal casting device.By utilizing chilled water, form testing fixture simple in structure.
Fig. 5 has represented horizontal casting device (30) and the UT (Ultrasonic Testing) testing fixture (40) that disposes at the tight rear of mold.
In above-mentioned casting apparatus (30), liquation (M) flow into the mold (33) of tubular with nozzle (32) via casting from tundish (tundish) (31).Be provided with the chilled(cooling) water supply (CWS) path (34) of cooling water supply (35) around continuous casting rod (S) in the exit of above-mentioned mold (33), the ejiction opening of this chilled(cooling) water supply (CWS) path (34a) forms the ring-type of surrounding continuous casting rod (S), and casts out the direction setting towards continuous casting rod (S).And, be supplied to the whole circumferential of continuous casting rod (S) from the chilled water (35) of ejiction opening (34) ejection, on the surface of the continuous casting rod (S) that casts out continuously, flow to casting out direction, (S) cools off to the continuous casting rod.
Above-mentioned UT (Ultrasonic Testing) testing fixture (40) has weir shape body (42) and two phase array probes probe (1) (2) of ring-type, and above-mentioned weir shape body (42) has continuous casting rod (S) and is inserted into wherein through hole (41) loosely.Above-mentioned weir shape body (40) is fixed on the pedestal by support column (43) with the height of continuous casting rod (S), and the internal diameter of through hole (41) forms greatlyyer than the external diameter of continuous casting rod (S).Therefore, the continuous casting rod (S) that casts out continuously with under the situation that through hole (41) contacts is not advancing in hole (41), the Clearance Flow of chilled water (35) between the side face of the outer peripheral face of continuous casting rod (S) and through hole (41).
In above-mentioned internal check device (40), run into above-mentioned weir shape body (40) from above-mentioned ejiction opening (34a) ejection and on the surface of continuous casting rod (S) to casting out the mobile chilled water (35) of direction, it flows and is hindered, part chilled water stores in the upstream side of weir shape body (42), and remainder flows in through hole (41).
Two phase array probes probe (1) (2) are supported by support component (omitting diagram), and point is inserted into predetermined arrangement angles (α) and stores in the water of the part upstream side of above-mentioned weir shape body (42), that the depth of water has deepened.Check result is exported to signal processing part (20), and then is exported to ultrasonic inspection decision maker (21).In ultrasonic inspection decision maker (21), whether judge defectiveness and/or damage judging whether continuous casting rod (S) is non-defective unit based on the signal of input, and result of determination is fed back in casting condition.
Above-mentioned UT (Ultrasonic Testing) testing fixture (40) be with the chilled water of mold (33) as contact medium owing to also do not need the equipment that transports that transports to testing fixture, therefore can simplify the peripheral unit that is used to check.
In addition, phase array probe probe (1) (2) also can be installed and carry out the UT (Ultrasonic Testing) inspection on the side face of the through hole (41) of above-mentioned weir shape body (40).
[the continuous operating UT (Ultrasonic Testing) inspection of flowing water]
UT (Ultrasonic Testing) inspection method of the present invention, not only can check the continuous casting rod after just casting, but also can implement between operating any operation continuously to check up to the flowing water that becomes factory state through various operations such as the cut-out of continuous casting rod, thermal treatment, peelings.And, when after casting, implement forging, during the operation of flowing water ground enforcement from the continuous casting to the forged article, also can after just casting or arbitrarily, carrying out the UT (Ultrasonic Testing) inspection between the operation.
Fig. 6 A～Fig. 6 C has represented from the process flow chart of the flowing water manufacturing that is casted into forged article.
(Fig. 6 A)
The continuous casting rod of the length that horizontal casting is gone out cuts into the material of a plurality of weak points, short material is implemented thermal treatment homogenize, and carries out peeling then to remove the casting skin of skin section.If necessary, the material of having removed the weak point behind the casting skin is carried out visual examination, dispatch from the factory then.Perhaps, implement forging process for the material of the weak point after the visual examination.In above-mentioned forging process, comprise cut-out (making of preformed articles), preheating, forging and molding.
In service continuously at above-mentioned flowing water, all carrying out the UT (Ultrasonic Testing) inspection between the operation arbitrarily, can either check at a place, also can check in many places.(K) expression to the mold from the horizontal casting device cast out move the operation checked of continuous casting rod, any testing fixture in UT (Ultrasonic Testing) testing fixture (10) that can be by having tank and the apparatus for ultrasonic examination (40) that utilizes the chilled water of mold is checked.In addition, (L) expression cuts into long continuous casting rod short material and is being attached with the operation of checking under the state of casting skin.(M) expression operation that the material of the weak point of having removed casting skin after the peeling is checked.At (L) with (M) in the operation, can use UT (Ultrasonic Testing) testing fixture (10) with tank.
(Fig. 6 B)
The continuous casting rod of the length that horizontal casting is gone out cuts into the material of a plurality of weak points, carries out peeling to remove the casting skin of skin section.The thermal treatment that the short material of having removed casting skin is used to homogenize, and then preheating and implement forging process.
In service continuously at above-mentioned flowing water, can carry out the UT (Ultrasonic Testing) inspection in a place or many places between operation.(K) among Fig. 6 B (L) (K) among (M) and Fig. 6 A (L) the inspection operation of (M) is identical.
(Fig. 6 C)
The continuous casting rod of the length that horizontal casting is gone out cut into the material of a plurality of weak points and the thermal treatment having carried out being used to homogenize after, carry out the casting skin that skin section is removed in peeling.The short material of having removed casting skin is implemented forging process.
In service continuously at above-mentioned flowing water, can carry out the UT (Ultrasonic Testing) inspection in a place or many places between operation.(K) among Fig. 6 C (L) (K) among (M) and Fig. 6 A (L) the inspection operation of (M) is identical.
As previously discussed, by to the flowing water manufacturing of forging, carrying out the UT (Ultrasonic Testing) inspection, can produce high-quality forged article efficiently from continuous casting.
The inspection method of continuous casting rod of the present invention can be applied to the casting of all metals.For example, can be applied to the continuous casting of aluminum or aluminum alloy.
The application requires based on the special right of priority of being willing to 2007-336453 number of Japan's patented claim of submitting on Dec 27th, 2007, and the disclosure former state of this Japanese patent application has constituted the application's a part.
Must recognize: employed here wording or expression way are used for explanation but not are used for determinate explanation, do not get rid of any equivalent of represented and the feature item recorded and narrated here, and the various distortion in the scope of patent protection of the present invention also allow.
Utilizability on the industry
The ultrasonic examination inspection method of cast rod of the present invention uses the vertical ripple with compressional wave of compressional wave oblique angle ripple to be used as incident light, pops one's head in to supply each other not inspection area by a plurality of phase array probes, can check that therefore the cross section is the Zone Full of circular cast rod. By utilizing this inspection method, can produce efficiently sound cast rod.
Claims (9)
1. the UT (Ultrasonic Testing) inspection method of a cast rod, it is characterized in that, along the cross section a plurality of phase array probes that circumferentially dispose at a predetermined angle for circular cast rod pop one's head in and carry out UT (Ultrasonic Testing) when checking, pop one's head in respect to any one phase array probe, other phase array probe is popped one's head in to be configured to: the not inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of described any one phase array probe probe is supplied by the inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of other phase array probes probes.
2. the UT (Ultrasonic Testing) inspection method of cast rod according to claim 1 wherein, is configured to two phase array probes probes to satisfy simultaneously the arrangement angles (α) of following two formulas:
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4；
180°-[3θ
3+3(180°-2θ
2)]≥θ
4，
Wherein,
θ
2: effective angle of bevel of phase array probe probe;
θ
3: the central angle of OP;
θ
4: 1/2 of the central angle in the dead band of the vertical incidence ripple of phase array probe probe;
O: the incidence point of the vertical incidence ripple of phase array probe probe;
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum.
3. the UT (Ultrasonic Testing) inspection method of cast rod according to claim 2 wherein, is configured to incident wave towards the below with two phase array probe probes.
4. according to the UT (Ultrasonic Testing) inspection method of each described cast rod of claim 1～3, wherein, a plurality of phase array probes probes are configured in horizontal casting the mold outlet near; The continuous casting rod that casts out is continuously carried out the UT (Ultrasonic Testing) inspection continuously.
5. the UT (Ultrasonic Testing) inspection method of cast rod according to claim 4, wherein, hinder cooling-water flow by the continuous casting rod being inserted into loosely leave in the through hole of weir shape body that the outlet of described mold is configured in its downstream, described phase array probe probe is configured to and the contacted state of chilled water that flows and hindered.
6. the UT (Ultrasonic Testing) testing fixture of a cast rod, be to be the UT (Ultrasonic Testing) testing fixture of a plurality of phase array probe probes of circumferentially disposing of circular cast rod along the cross section, it is characterized in that, pop one's head in respect to any one phase array probe, other phase array probe is popped one's head in to be configured to: the not inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of described any one phase array probe probe is supplied by the inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of other phase array probes probes.
7. the UT (Ultrasonic Testing) testing fixture of cast rod according to claim 6, wherein, two phase array probes probes are configured to satisfy simultaneously the arrangement angles (α) of following two formulas:
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4；
180°-[3θ
3+3(180°-2θ
2)]≥θ
4，
Wherein,
θ
2: effective angle of bevel of phase array probe probe;
θ
3: the central angle of OP;
θ
4: 1/2 of the central angle in the dead band of the vertical incidence ripple of phase array probe probe;
O: the incidence point of the vertical incidence ripple of phase array probe probe;
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum.
8. the flowing water manufacture method of a forged article, the cross section that casts out continuously for the mold outlet from horizontal casting is circular continuous casting rod, implement to cut into short material, peeling, thermal treatment in any order, and then then forge, this manufacture method is characterised in that, after just casting out or arbitrarily, carry out the UT (Ultrasonic Testing) inspection between the operation
Carry out described UT (Ultrasonic Testing) inspection in the following manner: along a plurality of phase array probe probes of circumferentially disposing at a predetermined angle of cast rod, pop one's head in respect to any one phase array probe, other phase array probe is popped one's head in to be configured to: the not inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of described any one phase array probe probe is supplied by the inspection area that forms based on the vertical ripple with compressional wave of compressional wave oblique angle ripple of other phase array probes probes.
9. the flowing water manufacture method of forged article according to claim 8, wherein, described UT (Ultrasonic Testing) inspection is undertaken by the arrangement angles (α) that two phase array probes probes are configured to satisfy simultaneously following two formulas:
2×(180°-2θ
2+θ
3)≤α≤2θ
2-θ
3-θ
4；
180°-[3θ
3+3(180°-2θ
2)]≥θ
4，
Wherein,
θ
2: effective angle of bevel of phase array probe probe;
θ
3: the central angle of OP;
θ
4: 1/2 of the central angle in the dead band of the vertical incidence ripple of phase array probe probe;
O: the incidence point of the vertical incidence ripple of phase array probe probe;
P: the incidence point of the oblique angle incident wave the when scanning angle of phase array probe probe is maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554760.8A CN103063747B (en) | 2007-12-27 | 2008-12-22 | The ultrasonic examination inspection method of cast rod and ultrasonic examination testing fixture |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007336453A JP5260045B2 (en) | 2007-12-27 | 2007-12-27 | Method and apparatus for ultrasonic inspection of cast bar |
| JP336453/2007 | 2007-12-27 | ||
| PCT/JP2008/073327 WO2009084508A1 (en) | 2007-12-27 | 2008-12-22 | Ultrasonic flaw detection method for cast stick and ultrasonic flaw detection device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210554760.8A Division CN103063747B (en) | 2007-12-27 | 2008-12-22 | The ultrasonic examination inspection method of cast rod and ultrasonic examination testing fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101960304A true CN101960304A (en) | 2011-01-26 |
| CN101960304B CN101960304B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880127512.7A Expired - Fee Related CN101960304B (en) | 2007-12-27 | 2008-12-22 | Ultrasonic flaw detection method for cast stick and ultrasonic flaw detection device |
| CN201210554760.8A Expired - Fee Related CN103063747B (en) | 2007-12-27 | 2008-12-22 | The ultrasonic examination inspection method of cast rod and ultrasonic examination testing fixture |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210554760.8A Expired - Fee Related CN103063747B (en) | 2007-12-27 | 2008-12-22 | The ultrasonic examination inspection method of cast rod and ultrasonic examination testing fixture |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5260045B2 (en) |
| KR (1) | KR20100101610A (en) |
| CN (2) | CN101960304B (en) |
| SG (1) | SG187394A1 (en) |
| WO (1) | WO2009084508A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353480A (en) * | 2013-07-09 | 2013-10-16 | 中国科学院声学研究所 | Automatic ultrasonic flaw detection method and device for locomotive wheel shaft |
| CN104487838A (en) * | 2012-07-10 | 2015-04-01 | 斯奈克玛 | Method for characterising an object comprising, at least locally, a plane of symmetry |
| CN104655734A (en) * | 2013-11-20 | 2015-05-27 | 中国科学院声学研究所 | Ultrasonic phased array probe system used in transversal flaw detection in tubular material or rod material |
| CN105522131A (en) * | 2016-02-02 | 2016-04-27 | 吉林大学 | Magnesium alloy bar power ultrasonic semi-continuous casting and flaw detection device and method |
| CN105772660A (en) * | 2016-04-06 | 2016-07-20 | 河南金阳铝业有限公司 | Aluminum ingot cooling well with flaw detection device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5638052B2 (en) * | 2012-10-16 | 2014-12-10 | 昭和電工株式会社 | Ultrasonic flaw detection inspection method for cast bars |
| KR101936547B1 (en) * | 2018-07-18 | 2019-04-03 | 엔디티엔지니어링(주) | Non-contact Type Billet Ultrasonic Tester |
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| JPS59116541A (en) * | 1982-12-24 | 1984-07-05 | Kobe Steel Ltd | Method for detecting flaw of square steel piece by using both electronic sector scanning and electronic linear scanning |
| JPS633254A (en) * | 1986-06-24 | 1988-01-08 | Nippon Steel Corp | Ultrasonic flaw detector for square billet |
| JPH0278949A (en) * | 1988-09-14 | 1990-03-19 | Toshiba Corp | Ultrasonic flaw detecting device |
| JP3264828B2 (en) * | 1996-05-10 | 2002-03-11 | 住友電気工業株式会社 | Defect detection method of lead sheath pipe for electric wire |
| CN2328012Y (en) * | 1998-02-24 | 1999-07-07 | 宝山钢铁(集团)公司 | Water tank for ultrasonic flow detection |
| JP2922508B1 (en) * | 1998-07-31 | 1999-07-26 | 三菱電機株式会社 | Automatic ultrasonic flaw detector |
| JP3638814B2 (en) * | 1999-03-31 | 2005-04-13 | 三菱電機株式会社 | Automatic ultrasonic flaw detector |
| CN1167950C (en) * | 2002-09-26 | 2004-09-22 | 大连理工大学 | Nondestructive inspection method for electric insulator steel foot and cast zinc ring combined face |
| JP2004209516A (en) * | 2002-12-27 | 2004-07-29 | Showa Denko Kk | Method and facility for producing aluminum alloy continuously cast rod and this continuously cast rod, and instrument and method for inspecting aluminum alloy cast rod and this cast rod |
| CN1330438C (en) * | 2003-03-26 | 2007-08-08 | 昭和电工株式会社 | Horizontally continuously cast rod of aluminum alloy and method and equipment for producing the rod |
| CN2762131Y (en) * | 2004-12-16 | 2006-03-01 | 攀钢集团攀枝花钢铁研究院 | Liquid coupling medium supply device of ultrasonic detection instrument |
| AR055141A1 (en) * | 2005-08-26 | 2007-08-08 | Sumitomo Metal Ind | ULTRASOUND TESTING PROBE, ULTRASOUND TESTING EQUIPMENT, ULTRASOUND TESTING PROCEDURE, AND PIPE OR CANE MANUFACTURING PROCEDURE |
| JP2007139546A (en) * | 2005-11-17 | 2007-06-07 | Showa Denko Kk | Apparatus for manufacturing metal rod-shaped material, method of manufacturing aluminum alloy continuously cast rod and non-destructive inspection device |
-
2007
- 2007-12-27 JP JP2007336453A patent/JP5260045B2/en active Active
-
2008
- 2008-12-22 CN CN200880127512.7A patent/CN101960304B/en not_active Expired - Fee Related
- 2008-12-22 SG SG2012095097A patent/SG187394A1/en unknown
- 2008-12-22 KR KR1020107014125A patent/KR20100101610A/en not_active Application Discontinuation
- 2008-12-22 WO PCT/JP2008/073327 patent/WO2009084508A1/en active Application Filing
- 2008-12-22 CN CN201210554760.8A patent/CN103063747B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104487838A (en) * | 2012-07-10 | 2015-04-01 | 斯奈克玛 | Method for characterising an object comprising, at least locally, a plane of symmetry |
| CN103353480A (en) * | 2013-07-09 | 2013-10-16 | 中国科学院声学研究所 | Automatic ultrasonic flaw detection method and device for locomotive wheel shaft |
| CN104655734A (en) * | 2013-11-20 | 2015-05-27 | 中国科学院声学研究所 | Ultrasonic phased array probe system used in transversal flaw detection in tubular material or rod material |
| CN105522131A (en) * | 2016-02-02 | 2016-04-27 | 吉林大学 | Magnesium alloy bar power ultrasonic semi-continuous casting and flaw detection device and method |
| CN105772660A (en) * | 2016-04-06 | 2016-07-20 | 河南金阳铝业有限公司 | Aluminum ingot cooling well with flaw detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103063747A (en) | 2013-04-24 |
| JP2009156755A (en) | 2009-07-16 |
| CN101960304B (en) | 2013-07-10 |
| SG187394A1 (en) | 2013-02-28 |
| KR20100101610A (en) | 2010-09-17 |
| CN103063747B (en) | 2016-05-04 |
| WO2009084508A1 (en) | 2009-07-09 |
| JP5260045B2 (en) | 2013-08-14 |
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