KR20150074554A - Ultrasonic testing apparatus for thick plate - Google Patents

Ultrasonic testing apparatus for thick plate Download PDF

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Publication number
KR20150074554A
KR20150074554A KR1020130162446A KR20130162446A KR20150074554A KR 20150074554 A KR20150074554 A KR 20150074554A KR 1020130162446 A KR1020130162446 A KR 1020130162446A KR 20130162446 A KR20130162446 A KR 20130162446A KR 20150074554 A KR20150074554 A KR 20150074554A
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KR
South Korea
Prior art keywords
axis
plate
ultrasonic probe
probe
coupled
Prior art date
Application number
KR1020130162446A
Other languages
Korean (ko)
Inventor
서호석
신선휴
Original Assignee
주식회사 포스코
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Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020130162446A priority Critical patent/KR20150074554A/en
Publication of KR20150074554A publication Critical patent/KR20150074554A/en

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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
    • 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
    • G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material

Abstract

The present invention discloses an ultrasonic inspection apparatus for a thick plate. An ultrasonic inspection apparatus of a thick plate includes: a probe plate; an ultrasonic probe having at least one ultrasonic probe coupled to the probe plate; An X-axis driving unit for moving the ultrasonic probe in the longitudinal direction of the thick plate; A Y-axis driving unit for moving the ultrasonic probe in a width direction of a thick plate; And a Z-axis driving unit for moving the ultrasonic probe in a height direction.

Description

[0001] Ultrasonic testing apparatus for thick plates [0002]

The present invention relates to an ultrasonic inspection apparatus for a steel plate, and more particularly, to an ultrasonic inspection apparatus for a steel plate, which can process a plurality of ultrasonic detection signals and is easy to move after disassembling and assembling components, ≪ / RTI >

As the use environment of the steel plate becomes harsh and the demand level for the quality of the consumer becomes higher, a higher level of quality control is required for the internal quality of the steel plate before shipment.

For example, a steel sheet manufactured with a width and a thickness designed through a rolling process is inspected for internal quality through nondestructive inspection.

Ultrasonic flaw detection technology is one of the non-destructive inspection methods. Ultrasonic flaw detection technology for the quality inspection of the steel sheet uses the phenomenon that the sound waves are reflected within the boundary of the medium having different characteristics (especially density) It is a technique to check whether another medium, in other words, a defect exists.

Using this principle in steel sheet quality inspection, the following results can be obtained. That is, when inclusions, cracks, scratches, dents, holes, and the like exist in the steel sheet, sound waves are reflected at the interface between the steel sheet and inclusions. The reflected ultrasound is detected by the probe along with its position and intensity information.

Since the ultrasonic probe normally scans the surface of the steel sheet in a two-dimensional manner, defect information of each point detected by the two-dimensional scanning operation of the ultrasonic probe is displayed on the screen that is graphically displayed by the image processing apparatus connected to the ultrasonic inspection apparatus Can be provided.

On the other hand, most steel plates are transported to a location equipped with a flaw detector for inspecting steel plates. However, a thick plate (thick plate) having a thickness of 5 mm or more, It is not easy to transport to the location where the defective device is again due to weight or the like.

Therefore, there is a need for a device that is free to move and can easily move to the location of the object to be examined.

The present invention relates to an ultrasonic inspection apparatus for detecting various defects at a time by providing a probe having a plurality of frequencies at the time of ultrasonic flaw detection, moving the probe to a spot where the plate is stuck and inspecting it, .

According to an embodiment of the present invention, there is provided an ultrasonic probe for a thick plate, comprising: a plate; an ultrasonic probe having at least one ultrasonic probe coupled to the plate; An X-axis driving unit for moving the ultrasonic probe in the longitudinal direction of the thick plate; A Y-axis driving unit for moving the ultrasonic probe in a width direction of a thick plate; And an X-axis driving unit for moving the ultrasonic probe in a height direction.

According to an embodiment of the present invention, the ultrasonic probe may further include a medium jet nozzle coupled to the plate and configured to jet the ultrasonic testing medium onto the plate.

According to one embodiment, the ultrasonic probe may further include a distance sensor coupled to the plate and detecting a distance from the plate.

According to one embodiment, the X-axis driving unit includes an X-axis guide rail installed on both sides in the width direction of the thick plate in the X-axis direction, an X-axis guide block movably coupled to the X-axis guide rail, And an X-axis driving motor that provides a driving force.

According to one embodiment, the X-axis guide rail includes a plurality of unit guide rails having a predetermined length, and the unit guide rails adjacent to the unit guide rails can be assembled to the rail bracket with fastening screws.

According to one embodiment, the Y-axis driving unit includes a Y-axis guide rail coupled to the upper side of the X-axis guide block in the width direction of the thick plate via a support bar, a Y-axis guide rail coupled to the Y- And a Y-axis driving motor for providing a driving force to the Y-axis guide block.

According to one embodiment, the Y-axis guide rail includes a plurality of unit guide rails having a predetermined length, and the unit guide rails adjacent to the unit guide rails can be assembled with fastening screws to the rail bracket.

According to one embodiment, the Z-axis driving unit includes a Z-axis guide rail coupled to the Y-axis guide block in the Z-axis direction, a Z-axis guide block coupled to the Z- And a Z-axis driving motor for providing a driving force to the Z-axis guide block.

According to the present invention, a plurality of ultrasonic detection signals are processed at one time, and the components can be disassembled and assembled so as to facilitate transportation, so that internal defects of the thick plate can be detected quickly in the field.

1 is a perspective view of an ultrasonic inspection apparatus for a steel plate according to the present invention.
FIG. 2 is a partially cut-away perspective view illustrating the X-axis driving unit according to FIG. 1 in detail. FIG.
FIG. 3 is a front view showing a Y-axis driving unit according to FIG. 1. FIG.
FIG. 4 is an enlarged perspective view of the Z-axis driving unit according to FIG. 1; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a ultrasonic probe for a thick plate according to the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 1, an ultrasonic testing apparatus of a thick plate according to an embodiment includes an ultrasonic probe 100 for detecting quality of a thick plate, an X-axis driving unit 200 for moving the ultrasonic probe 100 in the X- A Y-axis driving unit 300 for moving the ultrasonic probe 100 in the Y-axis direction, and a Z-axis driving unit 400 for moving the ultrasonic probe 100 in the Z-axis direction.

The ultrasonic probe unit 100 includes a probe plate 110 positioned on the upper side of the plate 1 in parallel with the plate and an ultrasonic probe 120 installed on the probe plate 110.

On the other hand, when performing the quality inspection of the heavy plate product by ultrasonic flaw detection, the accuracy of the flaw detection can be maintained by spraying the water as the flaw medium on the surface of the thick plate. Accordingly, the ultrasonic probe 100 may include a medium jet nozzle 130 coupled to the plate 110 to jet an ultrasonic diagnostic medium onto the plate. The medium spraying nozzle 130 is connected to the medium tank 131 and the medium line 132 provided at the inspection site of the thick plate.

The ultrasonic probe 100 may further include a distance sensor 140 coupled to the probe plate 110 to detect a distance from the plate 1. The distance sensor 140 may be any means capable of detecting the distance between the detection plate 110 and the thick plate. For example, a laser sensor or the like may be used.

Therefore, the ultrasonic probe 100 may be configured such that a plurality of ultrasonic probes 120 are installed at approximately the center of the probe plate 110, and a medium injection nozzle 130 and a distance sensor 140 are installed around the probe plate 120 .

The X-axis driving unit 200 moves the ultrasonic probe 100 in the X-axis direction. More precisely, the X-axis driving unit 200 and the Y-axis driving unit 400 combined with the Z- 300 in the X-axis direction. 2, the X-axis driving unit 200 includes an X-axis guide rail 210 installed on both sides in the width direction of the thick plate in the X-axis direction, an X-axis guide rail 210 coupled to the X- A block 220, and an X-axis driving motor 230 for providing a driving force to the X-axis guide block 220.

For example, the X-axis guide rail 210 is provided with a rack 211 in its longitudinal direction, and the X-axis guide block 220 is provided with a pinion 221 which mates with the rack 211. The pinion 221 is coupled to the drive shaft 231 of the X axis drive motor 230 and rotated so that the pinion 231 rotates in engagement with the rack 211 to rotate the ultrasonic flaw detector 100 in X So that it can be moved in the axial direction. The guide roller 223 is coupled to the inside of the X-axis guide block 220 by the roller shaft 224 to stabilize the movement of the X-axis guide block 220 It is possible. On the other hand, the X-axis guide rail may be configured in the form of a linear screw or servo cylinder instead of the above-described rack and pinion structure.

The X-axis guide rail 210 includes a plurality of unit guide rails having a predetermined length, and the unit guide rails adjacent to the unit guide rails are assembled with the fastening screws S to the rail bracket 240, When the work is completed, it can be easily separated.

The Y-axis driving unit 300 moves the ultrasonic testing unit 100 in the Y-axis direction. More precisely, the Y-axis driving unit 300 moves the Z-axis driving unit 400 coupled with the ultrasonic testing unit 100 in the Y-axis direction. 1 and 3, the Y-axis driving unit 300 includes a Y-axis guide rail 310 coupled to the upper side of the X-axis guide block 220 in the width direction of the thick plate, A Y-axis guide block 320 coupled to the Y-axis guide block 320 such that the Y-axis guide block 320 can run on the Y-axis guide block 320, and a Y-axis driving motor 330 that provides a driving force to the Y-

The Y-axis guide rails 310 also include a plurality of unit guide rails having a predetermined length in the same manner as the X-axis guide rails 210. Unit guide rails adjacent to the unit guide rails are fixed to the rail brackets 340 with fastening screws S ), So that it can be separated as needed.

Referring to FIGS. 1 and 4, the Z-axis driving unit 400 moves the ultrasonic probe 100 in the Z-axis direction. The Z-axis driving unit 400 includes a Z-axis guide rail A Z-axis guide block 420 which is coupled to the Z-axis guide rail 410 such that it can run on the Z-axis guide rail 410 in a state of supporting the test plate 110, a Z- . The Z-axis guide block 420 and the tear plate 110 may be connected to each other by a vertically arranged connection plate 425.

Similarly to the X-axis driving part 200, the Y-axis driving part 300 and the Z-axis driving part 400 are provided with racks on their respective guide rails, and the respective guide blocks are provided with pinions, It can be configured to enable. The Y-axis driving unit 300 and the Z-axis driving unit 400 may be configured in the form of a linear screw or a servo cylinder, as in the case of the X-axis driving unit.

Hereinafter, the operation of the ultrasonic testing apparatus of the thus constructed thick plate will be described.

Of the steel plates that have been subjected to the rolling process, the plates of 5 mm or more in thickness are transported to the shipyard for ship manufacturing.

However, since the thick plate thus transferred can be manufactured as an object after the internal defect or the like is detected, it is difficult to transfer the plate due to its size and weight. Therefore, the flaw detector is transferred to the place where the thick plate is loaded And the ultrasonic inspection apparatus according to one embodiment can satisfy this requirement.

1, the ultrasonic inspection apparatus according to an embodiment of the present invention includes an X-axis driving unit 200 and a Y-axis driving unit 300 Axis driving unit 400 and the Z-axis driving unit 400 can be assembled with a plurality of probe plates 120 having a plurality of probes 120.

When the assembling of the ultrasonic diagnostic apparatus is completed, the probe plate 110 is positioned at the measurement start point of the thick plate to complete the measurement preparation state.

When the Z-axis driving unit 400 is powered on, the test plate 110 is gradually lowered to the thick plate side. At this time, when the distance sensor 140 senses the distance to the thick plate and transmits a signal to the controller 500, The control unit 500 calculates the distance suitable for the detection and stops the operation of the Z-axis driver 400. [

Next, the medium is sprayed onto the thick plate through the medium jet nozzle 130, thereby performing the inspection operation.

The plate 110 performs a scanning operation while moving in the width direction of the thick plate by the operation of the Y-axis driving part 300. When the plate 110 reaches the end point, the X-axis driving part 200 operates and moves in the longitudinal direction of the thick plate Continue the inspection work.

As described above, the ultrasonic probe 100 repeatedly moves the Y-axis driving unit 300 and the X-axis driving unit 200 in a staggered manner from the upper side of the thick plate, and detects the defect of the thick plate by scanning the thick plate as a whole.

The detected result is displayed in the form of a graph on the control unit so that the operator can easily recognize the result. Accordingly, when a defect occurs, the operator can take prompt action.

On the other hand, when the inspection of the thick plate is completed, the ultrasonic inspection apparatus can easily transport the inspection object to another measurement site by separating the components including the guide rail and the like.

10; An ultrasonic inspection apparatus 100; Ultrasonic Flaw Detector
110; A deflection plate 120; Ultrasonic probe
130; A medium jet nozzle 140; Distance detector
200; An X-axis driving unit 210; X-axis guide rail
220; X-axis guide block 230; X-axis drive motor
240; A rail bracket 300; Y-axis driver
310; Y-axis guide rails 320; Y-axis guide block
330; Y-axis driving motor 340; Rail bracket
400; A Z-axis driving unit 410; Z-axis guide rail
420; Z-axis guide block 430; Z-axis drive motor
500; A control unit S; Fastening screw

Claims (8)

An ultrasonic probe having a probe plate and at least one ultrasonic probe coupled to the probe plate;
An X-axis driving unit for moving the ultrasonic probe in the longitudinal direction of the thick plate;
A Y-axis driving unit for moving the ultrasonic probe in a width direction of a thick plate;
A Z-axis driving unit for moving the ultrasonic probe in a height direction;
And the ultrasonic inspection device of the plate.
The method according to claim 1,
Wherein the ultrasonic probe further comprises a medium jet nozzle coupled to the probe plate and configured to jet the ultrasonic probe medium onto the thick plate.
The method according to claim 1,
Wherein the ultrasonic probe further comprises a distance sensor coupled to the probe plate and detecting a distance from the probe plate.
The method according to claim 1,
The X-axis driving unit includes an X-axis guide rail installed on both sides in the width direction of the thick plate in the X-axis direction, an X-axis guide block movably coupled to the X-axis guide rail, And a driving motor. ≪ Desc / Clms Page number 19 >
5. The method of claim 4,
Wherein the X-axis guide rail includes a plurality of unit guide rails having a predetermined length, and unit guide rails adjacent to the unit guide rails are assembled with fastening screws to the rail brackets.
5. The method of claim 4,
The Y-axis driving unit includes a Y-axis guide rail coupled to the upper side of the X-axis guide block in the width direction of the thick plate via a support, a Y-axis guide block coupled to the Y- And a Y-axis driving motor for providing driving force to the Y-axis driving motor.
The method according to claim 6,
Wherein the Y-axis guide rail includes a plurality of unit guide rails having a predetermined length, and unit guide rails adjacent to the unit guide rails are assembled with fastening screws to the rail brackets.
The method according to claim 6,
The Z-axis driving unit includes a Z-axis guide rail coupled to the Y-axis guide block in the Z-axis direction, a Z-axis guide block coupled to the Z-axis guide rail so as to be able to run on the Z- And a Z-axis driving motor for providing a driving force to the block.
KR1020130162446A 2013-12-24 2013-12-24 Ultrasonic testing apparatus for thick plate KR20150074554A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101599541B1 (en) 2015-11-16 2016-03-03 한국검사엔지니어링(주) Apparatus for assisting nondestructive inspection
CN105548361A (en) * 2016-01-26 2016-05-04 湖北金兰特种金属材料有限公司 Curved-surface self-coupling automatic flaw detector for explosive welding and application thereof
KR101696735B1 (en) * 2015-08-05 2017-01-16 주식회사 포스코 Apparatus for detecting casting structure of slab
KR101710576B1 (en) * 2015-08-26 2017-03-08 주식회사 에코란티 Ultrasonic Inspection apparatus equipped with bar-rail
KR20180062544A (en) * 2016-11-30 2018-06-11 주식회사 포스코 Ultrasonic testing apparatus
KR20190143378A (en) * 2018-06-19 2019-12-30 가부시키가이샤 히타치 파워 솔루션즈 Ultrasonic test device, control device and test method
KR20210112053A (en) * 2020-03-04 2021-09-14 포항공과대학교 산학협력단 Optical damage detection device
KR102525099B1 (en) * 2022-09-29 2023-04-21 이세창 Apparatus For Inspecting Pressure Container Using Ultrasonic Waves

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101696735B1 (en) * 2015-08-05 2017-01-16 주식회사 포스코 Apparatus for detecting casting structure of slab
KR101710576B1 (en) * 2015-08-26 2017-03-08 주식회사 에코란티 Ultrasonic Inspection apparatus equipped with bar-rail
KR101599541B1 (en) 2015-11-16 2016-03-03 한국검사엔지니어링(주) Apparatus for assisting nondestructive inspection
CN105548361A (en) * 2016-01-26 2016-05-04 湖北金兰特种金属材料有限公司 Curved-surface self-coupling automatic flaw detector for explosive welding and application thereof
KR20180062544A (en) * 2016-11-30 2018-06-11 주식회사 포스코 Ultrasonic testing apparatus
KR20190143378A (en) * 2018-06-19 2019-12-30 가부시키가이샤 히타치 파워 솔루션즈 Ultrasonic test device, control device and test method
KR20210112053A (en) * 2020-03-04 2021-09-14 포항공과대학교 산학협력단 Optical damage detection device
KR102525099B1 (en) * 2022-09-29 2023-04-21 이세창 Apparatus For Inspecting Pressure Container Using Ultrasonic Waves

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