WO2009084508A1 - 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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- 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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- phased array
- probe
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- ultrasonic flaw
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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
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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
- G01N29/04—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
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- 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
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- 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
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- 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
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- 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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Abstract
Description
任意の1つのフェイズドアレイ型プローブに対し、そのフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による未検査領域を、他のフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による検査領域が補完するように、他のフェイズドアレイ型プローブを配置することを特徴とする鋳造棒の超音波探傷検査方法。 [1] When performing ultrasonic flaw inspection by arranging a plurality of phased array probes at a predetermined angle in the circumferential direction of a casting rod having a circular cross section,
For any one phased array type probe, the unexamined area of the phased array type probe by the longitudinal wave and the vertical wave of the phased array type probe, and the longitudinal wave and the vertical wave of the other phased array type probe An ultrasonic flaw detection inspection method for a casting rod, wherein another phased array type probe is arranged so that the inspection region by the method is complemented.
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
180°-〔3θ3+3(180°-2θ2)〕≧θ4
但し、θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波の不感帯の中心角の1/2
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
をともに満足する配置角度(α)に配置する前項1に記載の鋳造棒の超音波探傷検査方法。 [2] Two phased array probes are expressed by the following two
180 ° − [3θ 3 +3 (180 ° −2θ 2 )] ≧ θ 4
However, θ 2 : Effective oblique angle angle of the phased array probe θ 3 : Center angle of the OP θ 4 : Half of the center angle of the dead band of the perpendicular incident wave of the phased array probe
O: The incident point of the perpendicular incident wave of the phased array probe P: The casting according to
任意の1つのフェイズドアレイ型プローブに対し、そのフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による未検査領域が他のフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による検査領域が補完されるように、他のフェイズドアレイ型プローブが配置されていることを特徴とする鋳造棒の超音波探傷検査装置。 [6] 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:
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
180°-〔3θ3+3(180°-2θ2)〕≧θ4
但し、θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波の不感帯の中心角の1/2
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
をともに満足する配置角度(α)に配置されている前項6に記載の鋳造棒の超音波探傷検査装置。 [7] The two phased array type probes have the following two
180 ° − [3θ 3 +3 (180 ° −2θ 2 )] ≧ θ 4
However, θ 2 : Effective oblique angle angle of the phased array probe θ 3 : Center angle of the OP θ 4 : Half of the center angle of the dead band of the perpendicular incident wave 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 (α) that satisfies both incident points. Ultrasonic flaw detection equipment for cast bars.
前記超音波探傷検査を、鋳造棒の周方向に、複数のフェイズドアレイ型プローブを所定角度で配置し、任意の1つのフェイズドアレイ型プローブに対し、そのフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による未検査領域を、他のフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による検査領域が補完するように、他のフェイズドアレイ型プローブを配置して行うことを特徴とする鍛造品の一貫製造方法。 [8] 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. In ultrasonic inspection inspection immediately after casting or between arbitrary processes,
In the ultrasonic flaw detection, 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. An integrated manufacturing method for forgings.
2つのフェイズドアレイ型プローブを、下記の2つの式
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
180°-〔3θ3+3(180°-2θ2)〕≧θ4
但し、θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波の不感帯の中心角の1/2
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
をともに満足する配置角度(α)に配置して行う、前項8に記載の鍛造品の一貫製造方法。 [9] The ultrasonic inspection is
Two phased array probes are expressed by the following two
180 ° − [3θ 3 +3 (180 ° −2θ 2 )] ≧ θ 4
However, θ 2 : Effective oblique angle angle of the phased array probe θ 3 : Center angle of the OP θ 4 : Half of the center angle of the dead band of the perpendicular incident wave 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 (α) that satisfies both, The integrated manufacturing method of the forged product as described.
1A、2A…走査外領域(未検査領域)
1B、2B…不感帯(未検査領域)
10,40…超音波探傷検査装置
33…鋳型
35…冷却水
41…貫通孔
42…堰状体
S…鋳造棒(連続鋳造棒) 1,2… 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)
θ1:フェイズドアレイ型プローブの最大走査角度
θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波による不感帯の中心角の1/2
θ5:マージン(D)の中心角
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
Q:鉛直線
r:鋳造棒の半径
図2より、マージン(C)=0のときの2つのフェイズドアレイ型プローブ(1)(2)の配置角度(α)は(i)式となり、かつ第1フェイズドアレイ型プローブ(1)の不感帯(1B)と第2フェイズドアレイ型プローブ(2)の走査外領域(1A)が重ならないための不感帯(1B)の中心角(θ4)は(ii)式を満たす必要がある。 α: Arrangement angle of two phased array probes θ 1 : Maximum scanning angle of phased array probe θ 2 : Effective oblique angle of phased array probe θ 3 : Center angle of OP θ 4 : Vertical of phased
θ 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. 2, the angle (α) of the two phased array probes (1) and (2) when the margin (C) = 0 is given by equation (i) and the first phased array probe (1) The center angle (θ 4 ) of the dead zone (1B) in order that the non-scanning region (1A) of the second phased array type probe (2) does not overlap with the dead zone (1B) of the second phased array probe (2) must satisfy the formula (ii).
180°-〔3θ3+3(180°-2θ2)〕≧θ4 …(ii)
上記(i)式は2つのフェイズドアレイ型プローブ(1)(2)の配置角度(α)の最小値(αmin)であるから、
αmin=2×(180°-2θ2+θ3) …(iii)
また、(ii)式より、マージン(D)の中心角(θ5)は下記(iv)式となる。 α = 2 × (180 ° −2θ 2 + θ 3 ) (i)
180 ° − [3θ 3 +3 (180 ° −2θ 2 )] ≧ θ 4 (ii)
Since the above equation (i) is the minimum value (α min ) of the arrangement angle (α) of the two phased array probes (1) and (2),
α min = 2 × (180 ° −2θ 2 + θ 3 ) (iii)
From the equation (ii), the central angle (θ 5 ) of the margin (D) is expressed by the following equation (iv).
前記配置角度(α)はマージン(D)=0となるまで拡大することができるから、配置角度(α)の最大値(αmax)は下記(v)となる。 θ 5 = 180 ° − [3θ 3 +3 (180 ° −2θ 2 )] − θ 4 (iv)
Since the arrangement angle (α) can be expanded until the margin (D) = 0, the maximum value (α max ) of the arrangement angle (α) is as follows (v).
=2θ2-θ3-θ4 …(v)
従って、鋳造棒(S)の全領域を検査するための配置角度(α)の取り得る範囲は、上記(ii)式を満たし、上記(iii)式で表される最小値(αmin)から(v)式で表される最大値(αmax)までの範囲となる。即ち、下記の2つの式を満足すように2つのフェイズドアレイ型プローブ(1)(2)を配置すれば、断面円形の鋳造棒(S)の全領域を検査することができる。 α max = α min + θ 5
= 2θ 2 −θ 3 −θ 4 (v)
Therefore, the possible range of the arrangement angle (α) for inspecting the entire area of the cast bar (S) satisfies the above formula (ii), and from the minimum value (α min ) represented by the above formula (iii). The range is up to the maximum value (α 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.
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
次に、上記各式における記号に代入すべき数値について説明する。 180 ° − [3θ 3 +3 (180 ° −2θ 2 )] ≧ θ 4
2 × (180 ° −2θ 2 + θ 3 ) ≦ α ≦ 2θ 2 −θ 3 −θ 4
Next, numerical values to be substituted for the symbols in the above equations will be described.
但し、OP間の距離(x1)の実測が困難である場合は、(x1)がフェイズドアレイ型プローブの大きさ(x2)とx1≒x2の関係にあることから、実測した(x2)により下記(vi’)により(θ3)を求めることができる。 θ 3 = Sin −1 (x 1 / r) (vi)
However, when it was difficult to actually measure the distance (x 1 ) between the OPs, (x 1 ) was measured because the relationship between the size (x 2 ) of the phased array probe and x 1 ≈x 2 From (x 2 ), (θ 3 ) can be obtained by the following (vi ′).
前記不感帯(1B)の大きさを表すOPの中心角の1/2(θ4)は、不感帯の大きさを表すものであり、実測によって求めることができる。 θ 3 = Sin −1 (x 2 / r) (vi ′)
1/2 (θ 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.
〔2つのフェイズドアレイ型プローブの配置角度の例〕
半径(r)が215mmの鋳造棒(S)の超音波探傷検査において、フェイズドアレイ型プローブ(1)(2)の有効斜角角度(θ2)=40°、フェイズドアレイ型プローブ(1)(2)の大きさ(x2)が28.7mm、不感帯の大きさ(θ4)が17.5°のとき、(vi’)式より(θ3)=7.6°が算出される。 The calculation formula for calculating the arrangement angle (α) 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.
[Example of the arrangement angle of two phased array probes]
In ultrasonic flaw inspection of a cast bar (S) with a radius (r) of 215 mm, the effective angle of the phased array probe (1) (2) (θ 2 ) = 40 °, the phased array probe (1) ( When the size (x 2 ) of 2 ) is 28.7 mm and the size of the dead zone (θ 4 ) is 17.5 °, (θ 3 ) = 7.6 ° is calculated from the equation (vi ′).
〔超音波探傷検査装置〕
(第1実施形態)
図4Aおよび図4Bに示す超音波探傷検査装置(10)は、水槽(11)と2つのフェイズドアレイ型プローブ(1)(2)とを備え、鋳造棒(S)を移動させながら検査を行うものである。 In FIGS. 1 to 3, for convenience of explanation, 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. In ultrasonic flaw detectors (10) and (40) described later, phased array probes (1) and (2) are arranged so that (Q) in FIGS. 2 and 3 is a vertical line.
[Ultrasonic flaw detection equipment]
(First embodiment)
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.
第1実施形態の超音波探傷検査装置(10)は水槽を用いるものであって、鋳造棒の水没が容易で十分な量の接触媒質を確保できる点が有利である。 (Second Embodiment)
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.
〔一貫連続運転における超音波探傷検査〕
本発明の超音波探傷検査方法は、鋳造直後の連続鋳造棒の検査のみならず、連続鋳造棒の切断、熱処理、ピーリング等の種々の工程を経て出荷形態となるまでの一貫連続運転における任意の工程間において実施できる。さらには、鋳造後に鍛造を実施し、連続鋳造から鍛造品の製造までを一貫して行う際に、鋳造直後、または任意の工程間においても超音波探傷検査を行うことができる。 Also, 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).
[Ultrasonic flaw detection in consistent continuous operation]
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.
(図6A)
水平連続鋳造した長尺の連続鋳造棒を複数の短尺材に切断し、短尺材に熱処理を施して均質化した後に、ピーリングを行って表層部の黒皮を除去する。黒皮を除去した短尺材は、要すれば外観検査を行った後、出荷する。あるいは、外観検査後の短尺材に対して、鍛造工程を実施する。前記鍛造工程には、切断(予備成形品の製作)、予備加熱、鍛造成形が含まれている。 6A to 6C show a process flow of integrated manufacturing from casting to forging.
(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. Or a forging process is implemented with respect to the short material after an external appearance test | inspection. The forging process includes cutting (manufacturing a preformed product), preheating, and forging.
(図6B)
水平連続鋳造した長尺の連続鋳造棒を複数の短尺材に切断し、ピーリングを行って表層部の黒皮を除去する。黒皮を除去した短尺材に均質化のための熱処理を行い、さらに予熱して鍛造工程を実施する。 In the continuous continuous operation, 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). Further, (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. In the steps (L) and (M), 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.
(図6C)
水平連続鋳造した長尺の連続鋳造棒を複数の短尺材に切断し、均質化のための熱処理を行った後に、ピーリングを行って表層部の黒皮を除去する。黒皮を除去した短尺材に対して鍛造工程を実施する。 In the above-mentioned continuous continuous operation, ultrasonic flaw inspection can be performed at one place or a plurality of places between processes. (K), (L), and (M) in FIG. 6B are the same as the inspection process of (K), (L), and (M) in FIG. 6A.
(FIG. 6C)
A long continuous cast bar horizontally cast is cut into a plurality of short materials and subjected to heat treatment for homogenization, and then peeled to remove the black skin on the surface layer. A forging process is performed on the short material from which the black skin has been removed.
Claims (9)
- 断面円形の鋳造棒の周方向に、複数のフェイズドアレイ型プローブを所定角度で配置して超音波探傷検査をするに際し、
任意の1つのフェイズドアレイ型プローブに対し、そのフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による未検査領域を、他のフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による検査領域が補完するように、他のフェイズドアレイ型プローブを配置することを特徴とする鋳造棒の超音波探傷検査方法。 When performing ultrasonic flaw inspection by arranging a plurality of phased array type probes at a predetermined angle in the circumferential direction of a casting rod having a circular cross section,
For any one phased array type probe, the unexamined area of the phased array type probe by the longitudinal wave and the vertical wave of the phased array type probe, and the longitudinal wave and the vertical wave of the other phased array type probe An ultrasonic flaw detection inspection method for a casting rod, wherein another phased array type probe is arranged so that the inspection region by the method is complemented. - 2つのフェイズドアレイ型プローブを、下記の2つの式
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
180°-〔3θ3+3(180°-2θ2)〕≧θ4
但し、θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波の不感帯の中心角の1/2
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
をともに満足する配置角度(α)に配置する請求項1に記載の鋳造棒の超音波探傷検査方法。 Two phased array probes are expressed by the 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
However, θ 2 : Effective oblique angle angle of the phased array probe θ 3 : Center angle of the OP θ 4 : Half of the center angle of the dead band of the perpendicular incident wave 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 (α) satisfying both. Ultrasonic flaw detection method for cast bars. - 入射波が下方に向かうように2つのフェイズドアレイ型プローブを配置する請求項2に記載の鋳造棒の超音波探傷検査方法。 3. The ultrasonic inspection method for a cast bar according to claim 2, wherein the two phased array probes are arranged so that the incident wave is directed downward.
- 複数のフェイズドアレイ型プローブを水平連続鋳造の鋳型出口の近傍に配置し、連続的に鋳出される連続鋳造棒に対して連続的に超音波探傷検査を行う請求項1~3のいずれかに記載の鋳造棒の超音波探傷検査方法。 A plurality of phased array probes are arranged in the vicinity of a mold outlet for horizontal continuous casting, and ultrasonic flaw detection is continuously performed on a continuous casting rod that is continuously cast. Method of ultrasonic inspection of cast rods.
- 前記鋳型出口から下流側に離間して配置した堰状体の貫通孔に連続鋳造棒を遊挿することにより冷却水の流れを妨げ、流れを妨げられた冷却水に前記フェイズドアレイ型プローブを接触させた状態に配置する請求項4に記載の鋳造棒の超音波探傷検査方法。 The flow of cooling water is blocked by loosely inserting a continuous casting rod into a through-hole of a weir-like body arranged at a downstream side from the mold outlet, and the phased array probe is brought into contact with the cooling water that is blocked from flowing. The ultrasonic flaw inspection method for a cast bar according to claim 4, wherein the method is arranged in a state where the cast rod is placed.
- 断面円形の鋳造棒の周方向に複数のフェイズドアレイ型プローブが配置された超音波探傷検査装置であって、
任意の1つのフェイズドアレイ型プローブに対し、そのフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による未検査領域が他のフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による検査領域が補完されるように、他のフェイズドアレイ型プローブが配置されていることを特徴とする鋳造棒の超音波探傷検査装置。 An ultrasonic flaw detection apparatus in which a plurality of phased array 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: - 2つのフェイズドアレイ型プローブが、下記の2つの式
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
180°-〔3θ3+3(180°-2θ2)〕≧θ4
但し、θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波の不感帯の中心角の1/2
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
をともに満足する配置角度(α)に配置されている請求項6に記載の鋳造棒の超音波探傷検査装置。 Two phased array type probes have the 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
However, θ 2 : Effective oblique angle angle of the phased array probe θ 3 : Center angle of the OP θ 4 : Half of the center angle of the dead band of the perpendicular incident wave of the phased array probe
O: The incident point of the perpendicular incident wave of the phased array type probe P: The incident angle of the oblique incident wave at the maximum scanning angle of the phased array type probe is arranged at an arrangement angle (α) that satisfies both. The ultrasonic flaw detection inspection apparatus of the described casting rod. - 水平連続鋳造の鋳型出口から連続的に鋳出される断面円形の連続鋳造棒に対し、短尺切断、ピーリング、熱処理を任意の順序で行い、さらに続いて鍛造を行う鍛造品の一貫製造方法において、鋳出し直後、または任意の工程間で超音波探傷検査を行うものとし、
前記超音波探傷検査を、鋳造棒の周方向に、複数のフェイズドアレイ型プローブを所定角度で配置し、任意の1つのフェイズドアレイ型プローブに対し、そのフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による未検査領域を、他のフェイズドアレイ型プローブの縦波斜角波および縦波垂直波による検査領域が補完するように、他のフェイズドアレイ型プローブを配置して行うことを特徴とする鍛造品の一貫製造方法。 In the integrated manufacturing method of forgings, short cutting, peeling, and heat treatment are performed in an arbitrary order on a continuous cast bar with a circular cross-section continuously cast from the mold outlet of horizontal continuous casting. An ultrasonic flaw inspection shall be performed immediately after taking out or between arbitrary processes,
In the ultrasonic flaw detection, 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. An integrated manufacturing method for forgings. - 前記超音波探傷検査は、
2つのフェイズドアレイ型プローブを、下記の2つの式
2×(180°-2θ2+θ3)≦α≦2θ2-θ3-θ4
180°-〔3θ3+3(180°-2θ2)〕≧θ4
但し、θ2:フェイズドアレイ型プローブの有効斜角角度
θ3:OPの中心角
θ4:フェイズドアレイ型プローブの垂直入射波の不感帯の中心角の1/2
O:フェイズドアレイ型プローブの垂直入射波の入射点
P:フェイズドアレイ型プローブの走査角度最大時の斜角入射波の入射点
をともに満足する配置角度(α)に配置して行う、請求項8に記載の鍛造品の一貫製造方法。 The ultrasonic flaw detection is
Two phased array probes are expressed by the 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
However, θ 2 : Effective oblique angle angle of the phased array probe θ 3 : Center angle of the OP θ 4 : Half of the center angle of the dead band of the perpendicular incident wave of the phased array probe
9. O: incidence point of perpendicular incident wave of phased array probe P: Arrangement angle (α) satisfying both incidence points of oblique incidence wave at the maximum scanning angle of phased array probe An integrated manufacturing method for forgings described in 1.
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JP2007336453A JP5260045B2 (en) | 2007-12-27 | 2007-12-27 | Method and apparatus for ultrasonic inspection of cast bar |
JP2007-336453 | 2007-12-27 |
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KR (1) | KR20100101610A (en) |
CN (2) | CN101960304B (en) |
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FR2993361B1 (en) * | 2012-07-10 | 2014-08-01 | Snecma | METHOD FOR CHARACTERIZING AN OBJECT COMPRISING AT LEAST LOCALLY A SYMMETRY PLAN |
JP5638052B2 (en) * | 2012-10-16 | 2014-12-10 | 昭和電工株式会社 | Ultrasonic flaw detection inspection method for cast bars |
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 |
CN104655734B (en) * | 2013-11-20 | 2017-10-31 | 中国科学院声学研究所 | The ultrasonic phase array probe system that a kind of horizontal triage of tubing or bar is surveyed |
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 |
KR101936547B1 (en) * | 2018-07-18 | 2019-04-03 | 엔디티엔지니어링(주) | Non-contact Type Billet Ultrasonic Tester |
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- 2008-12-22 SG SG2012095097A patent/SG187394A1/en unknown
- 2008-12-22 CN CN200880127512.7A patent/CN101960304B/en not_active Expired - Fee Related
- 2008-12-22 CN CN201210554760.8A patent/CN103063747B/en not_active Expired - Fee Related
- 2008-12-22 KR KR1020107014125A patent/KR20100101610A/en not_active Application Discontinuation
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Also Published As
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KR20100101610A (en) | 2010-09-17 |
JP2009156755A (en) | 2009-07-16 |
CN103063747A (en) | 2013-04-24 |
JP5260045B2 (en) | 2013-08-14 |
CN101960304A (en) | 2011-01-26 |
CN103063747B (en) | 2016-05-04 |
SG187394A1 (en) | 2013-02-28 |
CN101960304B (en) | 2013-07-10 |
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