WO2009084508A1 - 鋳造棒の超音波探傷検査方法および超音波探傷検査装置 - Google Patents

鋳造棒の超音波探傷検査方法および超音波探傷検査装置 Download PDF

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Publication number
WO2009084508A1
WO2009084508A1 PCT/JP2008/073327 JP2008073327W WO2009084508A1 WO 2009084508 A1 WO2009084508 A1 WO 2009084508A1 JP 2008073327 W JP2008073327 W JP 2008073327W WO 2009084508 A1 WO2009084508 A1 WO 2009084508A1
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WIPO (PCT)
Prior art keywords
phased array
probe
angle
inspection
ultrasonic flaw
Prior art date
Application number
PCT/JP2008/073327
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English (en)
French (fr)
Japanese (ja)
Inventor
Yasuhide Odashima
Original Assignee
Showa Denko K.K.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Denko K.K. filed Critical Showa Denko K.K.
Priority to CN200880127512.7A priority Critical patent/CN101960304B/zh
Publication of WO2009084508A1 publication Critical patent/WO2009084508A1/ja

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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
    • 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
    • G01N29/04—Analysing solids
    • 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

Definitions

  • the present invention relates to an ultrasonic flaw detection inspection method for a cast bar having a circular cross section, and an ultrasonic flaw detection inspection apparatus for carrying out this inspection method.
  • a continuous casting rod is manufactured by casting a cylindrical, prismatic or hollow column-shaped long ingot from a molten metal.
  • the casting method includes a float casting method, a direct chill (DC casting) method, a gas pressure hot top continuous casting method, and the like.
  • the surface non-uniform layer that causes cracking during plastic working is removed, and the surface and internal defects after the outer peripheral portion are removed are inspected (see Patent Document 1). .
  • the manufacturing process of the continuous casting rod described in Patent Document 1 includes an internal nondestructive inspection process by ultrasonic flaw inspection between the continuous casting process and the outer periphery removing process.
  • Ultrasonic inspection is highly capable of detecting internal defects such as cracks, and by processing detected electrical signals, it is easier to automatically determine defects compared to X-rays that require image processing. This makes it possible to perform stable inspection with high accuracy of inspection.
  • the probe is rotated in the circumferential direction of the continuous casting rod or a number of ultrasonic flaw detection probes are arranged in the circumferential direction. It was necessary. In addition, it is difficult to arrange a large number of probes with high accuracy, and inspection accuracy is also difficult due to the inability to arrange them with high accuracy.
  • the present invention implements an ultrasonic flaw detection inspection method for a casting rod capable of inspecting the entire region while using a longitudinal wave as an incident wave with respect to a casting rod having a circular cross section, and the inspection method.
  • An object of the present invention is to provide an ultrasonic flaw detection inspection apparatus.
  • the present invention has the configurations described in [1] to [9] below.
  • phased array probes are expressed by the following two formulas 2 ⁇ (180 ° ⁇ 2 ⁇ 2 + ⁇ 3 ) ⁇ ⁇ ⁇ 2 ⁇ 2 ⁇ 3 ⁇ 4 180 ° ⁇ [3 ⁇ 3 +3 (180 ° ⁇ 2 ⁇ 2 )] ⁇ ⁇ 4
  • ⁇ 2 Effective oblique angle angle of the phased array probe
  • O The incident point of the perpendicular incident wave of the phased array probe
  • P The casting according to item 1 above, wherein the incident point of the oblique incident wave at the maximum scanning angle of the phased array probe is arranged at an arrangement angle ( ⁇ ) that satisfies both Ultrasonic flaw detection method for bars.
  • An ultrasonic flaw detection inspection apparatus in which a plurality of phased array type probes are arranged in the circumferential direction of a cast bar having a circular cross section, For any one phased array type probe, the uninspected area due to the longitudinal and vertical wave of the phased array probe is caused by the longitudinal and vertical wave of the other phased array probe.
  • Another phased array type probe is arranged so that the inspection area is complemented, and an ultrasonic flaw detection inspection apparatus for a cast bar, characterized in that:
  • the two phased array type probes have the following two formulas 2 ⁇ (180 ° ⁇ 2 ⁇ 2 + ⁇ 3 ) ⁇ ⁇ ⁇ 2 ⁇ 2 ⁇ 3 ⁇ 4 180 ° ⁇ [3 ⁇ 3 +3 (180 ° ⁇ 2 ⁇ 2 )] ⁇ ⁇ 4
  • ⁇ 2 Effective oblique angle angle of the phased array probe
  • O The incident point of the perpendicular incident wave of the phased array probe
  • P The incident point of the oblique incident wave at the maximum scanning angle of the phased array probe is arranged at an arrangement angle ( ⁇ ) that satisfies both incident points.
  • Integrated manufacturing method of forgings in which short-cutting, peeling, and heat treatment are performed in an arbitrary order on a continuous cast bar having a circular cross section continuously cast from the mold outlet of horizontal continuous casting, and then forged.
  • a plurality of phased array probes are arranged at a predetermined angle in the circumferential direction of the casting rod, and the longitudinal and oblique waves of the phased array probe and any one phased array probe and Other phased array type probes are arranged so that the non-inspected area due to longitudinal and vertical waves is complemented by the inspection area by longitudinal and oblique waves and longitudinal and vertical waves of other phased array type probes.
  • the ultrasonic inspection is Two phased array probes are expressed by the following two formulas 2 ⁇ (180 ° ⁇ 2 ⁇ 2 + ⁇ 3 ) ⁇ ⁇ ⁇ 2 ⁇ 2 ⁇ 3 ⁇ 4 180 ° ⁇ [3 ⁇ 3 +3 (180 ° ⁇ 2 ⁇ 2 )] ⁇ ⁇ 4
  • ⁇ 2 Effective oblique angle angle of the phased array probe
  • O The incident point of the perpendicular incident wave of the phased array probe
  • P The incident point of the oblique incident wave at the maximum scanning angle of the phased array probe is arranged at an arrangement angle ( ⁇ ) that satisfies both,
  • ⁇ Effective oblique angle angle of the phased array probe
  • the entire region including the vicinity of the surface is obtained by injecting a longitudinal oblique wave and a longitudinal vertical wave into the casting rod having a circular cross section by a phased array probe.
  • the ultrasonic flaw inspection can be performed.
  • a pseudo defect echo hardly appears on the flaw detection screen with a longitudinal wave having a high sound velocity, and a wide range of flaw detection is possible with one probe, high inspection accuracy can be obtained.
  • an arrangement angle ( ⁇ ) of probes that can complement each other's uninspected areas of the two phased array probes is derived.
  • the ultrasonic flaw inspection can be performed.
  • FIG. 3 is an enlarged view of a main part of FIG. 2. It is a front view showing typically one embodiment of the ultrasonic flaw detection equipment of the present invention. It is a side view of the ultrasonic flaw detection inspection apparatus of FIG. 4A. It is a perspective view including the partial cross section which shows typically other embodiment of the ultrasonic flaw inspection apparatus of this invention.
  • Phased array probe 1A, 2A non-scanning area (uninspected area) 1B, 2B ... Dead zone (uninspected area) 10,40 ...
  • Ultrasonic flaw detector 33 ... Mold 35 ... cooling water 41 ... through hole 42 ... Weir S ... Casting rod (continuous casting rod)
  • the phased array type probe used in the present invention is a probe in which a plurality of probes are arranged in parallel (probe block), and the focus point is electronically controlled. ) Is possible, and a wide area inspection is possible.
  • a longitudinal wave having a higher speed of sound than a transverse wave has high inspection accuracy because a pseudo defect echo hardly appears on the flaw detection screen. Since a single probe block can perform a wide range of flaw detection, there is no decrease in inspection accuracy due to a decrease in positional accuracy that occurs when a large number of conventional single probes are arranged in the circumferential direction, so that high inspection accuracy can be obtained.
  • phased array type probe can detect a wide area with a longitudinal wave oblique angle (including vertical), it still inevitably generates an uninspected area.
  • a plurality of phased array type probes are arranged at a predetermined angle in the circumferential direction with respect to a cast bar having a circular cross section, and the entire region including the vicinity of the surface is inspected by complementing each other's uninspected regions. can do.
  • FIG. 1 shows an example in which two phased array probes (1) and (2) are arranged on a casting rod (S) having a circular cross section.
  • (1A) and (1A) are out-of-scan areas outside the maximum scan range, and (1B) is the bottom echo that appears when incident light is incident in the vertical direction. This is a dead zone that cannot be classified as an echo.
  • These regions (1A), (1A), and (1B) are uninspected regions in which flaw detection by the first phased array probe (1) is not possible.
  • the non-scanning regions (1A) and (1A) are reduced by enlarging the scanning range, but cannot be completely eliminated because the inspection object has a circular cross section.
  • the dead zone (1B) is an inevitably generated region.
  • (2A) and (2A) are out-of-scan areas outside the maximum scan range, and (2B) is a dead zone due to pseudo-fault echo, This is an uninspected area where the array type probe (2) cannot be used for flaw detection.
  • the entire region can be inspected.
  • margin (C) 0, margin (D) ⁇ 0 and the unexamined areas of the two phased array probes (1) and (2) do not overlap.
  • a method of obtaining will be described with reference to the ultrasonic propagation path diagram of FIG.
  • the two phased array probes (1) and (2) have the same function and will be described using common reference numerals.
  • FIG. 2 The symbols in FIG. 2 are as follows. In FIG. 2, only the left half propagation path of the casting rod (S) is shown, and the right half propagation path is not shown.
  • ⁇ Arrangement angle of two phased array probes ⁇ 1 : Maximum scanning angle of phased array probe ⁇ 2 : Effective oblique angle of phased array probe ⁇ 3 : Center angle of OP ⁇ 4 : Vertical of phased array probe 1/2 of the center angle of the dead zone due to the incident wave ⁇ 5 : Center angle of margin (D)
  • O Point of incidence of vertical incident wave of phased array probe
  • P Point of incidence of oblique incident wave at the maximum scanning angle of phased array probe
  • Q Vertical line r: Cast rod From Fig.
  • the range is up to the maximum value ( ⁇ max ) expressed by equation (v). That is, if the two phased array probes (1) and (2) are arranged so as to satisfy the following two expressions, the entire region of the casting rod (S) having a circular cross section can be inspected.
  • the maximum scanning angle ( ⁇ 1 ) is an angle determined by the specifications of the phased array type probe.
  • the effective oblique angle ( ⁇ 2 ) is an angle determined by the refraction angle and the maximum scanning angle ( ⁇ 1 ).
  • the degree of attenuation of the ultrasonic wave and the defect size to be detected are taken into consideration.
  • the center angle ( ⁇ 3 ) of the OP can be expressed by the following equation (vi) from the distance (x 1 ) between the OPs and the radius (r) of the cast rod (S), as shown in FIG.
  • ⁇ 3 Sin ⁇ 1 (x 2 / r) (vi ′) 1/2 ( ⁇ 4 ) of the central angle of OP representing the size of the dead zone (1B) represents the size of the dead zone and can be obtained by actual measurement.
  • the arrangement angle ( ⁇ ) of the two phased array probes (1) and (2) that can inspect the entire region can be determined from the actually measured values, (iii), (iv), and (vi ′). it can.
  • the calculation formula for calculating the arrangement angle ( ⁇ ) described above is based on two phased array probes having the same specifications. However, when using phased array probes having different specifications, the incident position of each probe and An arrangement angle can be obtained based on various angles. Further, when three or more phased array type probes are used, they may be arranged so that the non-scanning regions of adjacent probes do not overlap and the dead zone of one probe does not overlap the scanning region of other probes.
  • the phased array probes may be located anywhere in the circumferential direction of the casting rod.
  • the phased array type probes (1) and (2) are arranged obliquely above the casting rod (S), and the ultrasonic waves are directed downward from above. Is preferably incident.
  • ultrasonic waves When ultrasonic waves are irradiated from below to above, ultrasonic waves that were not incident on the casting rod (S) may be reflected on the water surface, and the echo may be detected as a pseudo defect signal.
  • the distance (WD) between the casting rod (S) and the phased array type probe (1) (2) is preferably a sufficient distance so that the repeated echo of the surface wave does not become a pseudo defect echo.
  • the water tank is preferably sufficiently large to avoid the pseudo defect signal. It is preferable that there is a distance from the peripheral surface of the casting rod (S) to the wall surface of the water tank so that the ultrasonic wave propagating in the water is sufficiently attenuated. Further, it is possible to cope with the problem by arranging a sound absorbing material on the wall surface of the water tank and eliminating the sound wave that causes the pseudo defect echo.
  • the first phased array type probe (1) is arranged directly above, and the phased array type probe (1) (2) optimal position of the casting rod (S) is shown. It does not indicate.
  • phased array probes (1) and (2) are arranged so that (Q) in FIGS. 2 and 3 is a vertical line.
  • the ultrasonic flaw detection apparatus (10) shown in FIGS. 4A and 4B includes a water tank (11) and two phased array probes (1) and (2), and performs inspection while moving the casting rod (S). Is.
  • through-holes (12) and (13) for allowing the casting rod (S) to pass therethrough are provided on the wall in the traveling direction of the casting rod (S), and these through-holes (12) and (13) are provided.
  • Water (14) which is a contact medium is stored up to a sufficiently higher water level.
  • Two phased array probes (1) and (2) are attached to both ends of the horizontal arm (16) attached to the tip of the vertical arm (15) of the support device via the bracket (17) so that the angle can be adjusted.
  • the casting rod (S) that moves is irradiated with ultrasonic waves obliquely from above.
  • a scanning roller (18) that contacts the casting rod (S) is attached to an intermediate portion in the left-right direction of the horizontal arm (15), and the arms (15) and (16) correspond to the positional deviation of the casting rod (S).
  • the casting rod (S) and the phased array type probes (1) and (2) are always in a fixed positional relationship.
  • the ultrasonic flaw detector (10) can inspect the moving casting rod (S) regardless of the length of the casting rod (S).
  • a continuous casting rod (S) cast from a mold of a horizontal continuous casting apparatus can be continuously inspected at a casting speed.
  • the cut cast bar can be inspected by moving the cast bar (S) at a predetermined speed by the moving device.
  • the inspection can be performed regardless of the length of the inspection object.
  • the phased array probe can be moved while fixing the inspection target.
  • the phased array type probes (1) and (2) are controlled by a control device (not shown) to detect the cast rod (S), and the signals emitted from the phased array type probes (1) and (2) are signal processed. Is output to the unit (20), and after being subjected to predetermined processing, is output to the ultrasonic examination determination device (21). In the ultrasonic inspection determination device (21), the presence or absence of defects or scratches is determined based on the input signal, and the quality of the cast bar (S) is determined. Moreover, if it is a continuous inspection of the continuous casting rod (S) cast from the mold of the horizontal continuous casting apparatus, the inspection can be performed efficiently, the determination result is fed back to the casting conditions, and the defective portion is sprayed.
  • the detected defect position is memorize
  • the continuous casting rod (S) can be subjected to ultrasonic flaw inspection while moving, so there is no dead zone at the end face because the inspection target portion has no end face, and it is cut after the inspection.
  • the short material is inspected to the end face.
  • the ultrasonic flaw detection apparatus (10) of the first embodiment uses a water tank, which is advantageous in that the casting rod can be easily submerged and a sufficient amount of contact medium can be secured.
  • the ultrasonic flaw detection inspection method of the present invention can also inspect using cooling water supplied from the mold of the horizontal continuous casting apparatus to the casting rod without using a water tank. By using the cooling water, an inspection device with a simple structure is obtained.
  • FIG. 5 shows a horizontal continuous casting apparatus (30) and an ultrasonic flaw detection apparatus (40) disposed immediately after the mold.
  • the molten metal (M) flows from the tundish (31) through the pouring nozzle (32) into the cylindrical mold (33).
  • a cooling water supply passage (34) for supplying cooling water (35) to the periphery of the continuous casting rod (S) is provided at the outlet of the mold (33), and the discharge port (34a) is provided for the continuous casting rod (S). ) And is provided toward the casting direction of the continuous casting rod (S).
  • the cooling water (35) spouted from the discharge outlet (34) is supplied to the whole circumferential direction of a continuous casting rod (S), and is cast on the surface of the continuous casting rod (S) continuously cast. To cool the continuous casting rod (S).
  • the ultrasonic flaw detector (40) includes an annular weir (42) having a through hole (41) into which a continuous casting rod (S) is loosely inserted, two phased array probes (1), (2), It has.
  • the weir-like body (40) is fixed on the table by a support leg (43) at the height of the continuous casting rod (S), and the inner diameter of the through hole (41) is larger than the outer diameter of the continuous casting rod (S). Is formed. Therefore, the continuously cast bar (S) continuously cast proceeds in the hole (41) without contacting the through hole (41), and the outer peripheral surface of the continuous cast bar (S) and the through hole (41). Cooling water (35) flows through the gap between the peripheral surfaces of the two.
  • the cooling water (35) discharged from the discharge port (34a) and flowing in the casting direction on the surface of the continuous casting rod (S) hits the weir-like body (40) and flows. A part of it is stored on the upstream side of the weir-like body (42), and the rest flows into the through hole (41).
  • the two phased array probes (1) and (2) are supported by a support member (not shown), and the tip portion is stored in the upstream side of the weir-like body (42) so that the water depth is increased. It is inserted at an arrangement angle ( ⁇ ).
  • the inspection result is output to the signal processing unit (20), and further output to the ultrasonic inspection determination device (21).
  • the ultrasonic inspection determination device (21) the presence or absence of a defect or a flaw is determined based on the input signal, the quality of the continuous casting rod (S) is determined, and the determination result is fed back to the casting conditions.
  • the ultrasonic flaw detection and inspection apparatus (40) uses the cooling water of the mold (33) as a contact medium and does not require a transport facility to the inspection apparatus, so that peripheral devices for inspection can be simplified. .
  • ultrasonic flaw detection can be performed by attaching phased array type probes (1) and (2) to the peripheral surface of the through hole (41) of the weir-like body (40).
  • the ultrasonic flaw detection inspection method of the present invention is not limited to the inspection of a continuous cast bar immediately after casting, but also in an arbitrary continuous operation until it becomes a shipping form through various processes such as cutting, heat treatment, and peeling of the continuous cast bar. It can be implemented between processes. Furthermore, when performing forging after casting and consistently performing from continuous casting to forging production, ultrasonic flaw detection can be performed immediately after casting or between arbitrary processes.
  • FIG. 6A A long continuous cast bar obtained by continuous horizontal casting is cut into a plurality of short materials, and the short materials are heat treated and homogenized, and then peeled to remove the black skin on the surface layer.
  • the short material from which the black skin has been removed is shipped after an appearance inspection if necessary.
  • a forging process is implemented with respect to the short material after an external appearance test
  • the forging process includes cutting (manufacturing a preformed product), preheating, and forging.
  • an ultrasonic flaw detection inspection can be performed during any process, and an inspection can be performed at one place or a plurality of places.
  • K shows a process for inspecting a moving continuous casting rod cast from a mold of a horizontal continuous casting apparatus, using an ultrasonic flaw detection apparatus (10) equipped with a water tank and mold cooling water. Inspection can be performed by either of the ultrasonic inspection apparatuses (40).
  • L shows a process in which a long continuous cast bar is cut into short materials and inspected with a black skin.
  • M shows a process of inspecting a short material from which the black skin after peeling has been removed.
  • an ultrasonic flaw detection apparatus 10 equipped with a water tank can be used.
  • Fig. 6B A long continuous cast bar horizontally cast is cut into a plurality of short materials and peeled to remove the black skin on the surface layer. The short material from which the black skin has been removed is subjected to heat treatment for homogenization and further preheated to carry out the forging process.
  • a high-quality forged product can be efficiently manufactured by performing ultrasonic flaw detection in integrated production from continuous casting to forging.
  • the inspection method for continuous cast bars of the present invention can be applied to all metal castings.
  • it can be applied to continuous casting of aluminum or aluminum alloy.
  • the ultrasonic flaw detection inspection method of the casting rod of the present invention uses longitudinal wave oblique waves and longitudinal wave vertical waves as incident light, and complements each other's uninspected area with a plurality of phased array probes, It is possible to inspect the entire area of a cast bar with a circular cross section. By using this inspection method, it is possible to efficiently manufacture a sound casting rod.

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  • Mechanical Engineering (AREA)
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  • Physics & Mathematics (AREA)
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PCT/JP2008/073327 2007-12-27 2008-12-22 鋳造棒の超音波探傷検査方法および超音波探傷検査装置 WO2009084508A1 (ja)

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CN200880127512.7A CN101960304B (zh) 2007-12-27 2008-12-22 铸造棒的超声波探伤检查方法和超声波探伤检查装置

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JP2007336453A JP5260045B2 (ja) 2007-12-27 2007-12-27 鋳造棒の超音波探傷検査方法および超音波探傷検査装置
JP2007-336453 2007-12-27

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KR (1) KR20100101610A (enrdf_load_stackoverflow)
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SG (1) SG187394A1 (enrdf_load_stackoverflow)
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JP5638052B2 (ja) * 2012-10-16 2014-12-10 昭和電工株式会社 鋳造棒の超音波探傷検査方法
CN103353480A (zh) * 2013-07-09 2013-10-16 中国科学院声学研究所 一种机车轮轴超声自动探伤方法及装置
CN104655734B (zh) * 2013-11-20 2017-10-31 中国科学院声学研究所 一种管材或棒材横伤检测的超声相控阵探头系统
CN105522131A (zh) * 2016-02-02 2016-04-27 吉林大学 一种镁合金棒材功率超声半连续铸造及探伤装置和方法
CN105772660A (zh) * 2016-04-06 2016-07-20 河南金阳铝业有限公司 具有探伤装置的铝锭冷却井
KR101936547B1 (ko) * 2018-07-18 2019-04-03 엔디티엔지니어링(주) 비접촉식 빌릿 초음파 검사 장치

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