JPS59120860A - Ultrasonic flaw detector - Google Patents

Abstract

PURPOSE:To allow an unlimited scanning range of a probe while enabling an automatic scanning by attaching a mark to the position at which a defect is detected with the probe after a detector is mounted on a truck. CONSTITUTION:Detectors 21 and 22 are mounted on a truck 11, which then, is moved along a linear part 6 subjected to detection of flaws according to a flaw detecting part position detecting signal from the detectors 21 and 22. At the same time, the truck 11 is equipped with a pantographe mechanism 13, which is provided with an ultrasonic probe 18 and a marking device 19. The pantographe mechanism 13 is driven with a driving mechanism 13 carried on the truck 11 and the ultrasonic probe 18 performs a specified scanning to detect a defect while the marking device 19 receives a defect detection signal to attach a mark to the defect detected position. This allows an unlimited scanning range of the probe while enabling an automatic scanning.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an ultrasonic flaw detection apparatus that flaws a linear flaw-detected part such as a weld line and marks a defect detection position.

[Technical background of the invention and its problems]

In recent years, scanning of an ultrasonic probe during ultrasonic flaw detection has become visual. This automatic scanning method includes the following.

■ If the object to be examined is a steel plate or a vibrator, the ultrasonic probe is fixedly installed and the object is continuously passed through the ultrasonic probe for 1 hour.

■ Immerse the subject in water and use the water immersion method to scan the subject vertically and horizontally with an ultrasonic probe without contact.

■ Local%1 An ultrasonic probe immersed in water is scanned over a fixed range on a flat surface.

By the way, method (2) does not require moving the ultrasound probe, so the structure of the device is simple, but it can only be applied when there are a large number of subjects with inebriated feet. In case (2), the scanning range of the probe is limited because the 1β sonic branch probe is scanned within a range of one leg.For this reason, what should be done in case It has to be done several times, and there is the hassle of having to set up the equipment and hit the target each time.

For example, in Figure 1, +6 and Figure 2, is it easy to find the weld line using the method described in ■? If you do, please post it. I in the figure is a superbeneficial wave contact plane that moves in the X direction along Nobuito 2, and the guide 2 has a drive of 11 and 3 and a total of 1. This movement @1 old 3 is reniru 4 by motor etc.
In the upper 1Y direction! Iu1 (.Therefore, the above rail 4 is fl
(7) When the probe I is installed parallel to the bath tangent 6 on the surface of the body 5 and the probe I is emitted from the welding line 6, , also (2, pH range (shi, kIttj 3 to break the d summoning f skin (' に 怀:) 子I) in the spring and move it in a jiggly 5g shape like a bog and ℃ 1 shi ■ constant range? L * L, 70　state wall 0〕)'>Wound fI
I can do it.

However, in such a device, there is a limit to the length of the rail 4, and if the scanning distance is longer than the rail 4, the rail 4 must be reinstalled. Also, when detecting flaws on the bath tangent to the circumference of a cylindrical tank, it must be curved with the same curvature as the tank! There is a j53,
There is the trouble of having to change the curvature of the rail according to the curvature of the tank (2).Furthermore, since the guide 2 has a fixed length, it is not only inconvenient to use in a place where it is difficult to detect flaws but also However, there are times when the company is incompetent.

- If flaws are detected using such a moving device,
The data of the position of the probe (X, Y) at the time of defect detection, the peak value of the defect ≦γ) is output from tape, flick, etc.
:Measure the distance from point ii and find the defect location Fj-j. Also, if you have a tape (2G self-recorded talent), do you get this?
It is also possible to analyze it using a computer or the like and output it as defect location information.

However, in any case, the defect in the test object 5 could only be detected by an indirect method.

[Genmei's purpose]

The present invention was made in Q) based on such 'Pi'm, and the scanning range of the probe is not limited, and moreover, it can be automatically scanned, and one force can be applied to a narrow field. The purpose of the present invention is to provide a device that can be used with 6π: of the defect location and which can be directly recognized with 10,000 YJ:.

[Lunyu Ming's work 1 (required)] The super flaw detection device of the present invention is equipped with a detection device 1', e on a trolley.
It'y, A (1 digit, from this 1 extraction device e, to Q) detected flaw > ii) position ii [:. -along-C transfer j1 sa・se-
), and (2, Sho 1) Equip the pantograph mechanism in the g-tai-tun.
We installed a super-transducer and a marking device on the '7, and mounted a drive unit #1 on the 11th truck.
J ii, 0 flood 1 aircraft 111G 011.1 self-Bantagra) aircraft (Abejj prefecture rabbit 1 cho) caused super change wave operation.
Jt constant Q) scanning is performed, and when a defect is detected by the extreme right limb probe, the marking device detects the defect iPJ!
It is configured so that a mark is placed on the defective area (4).

[Example of explanation]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. FIGS. 3 and 4 are block diagrams of the super↑l wave concussion device, and in the figures, reference numeral II is the stand T [[]. The trolley 11 is a magnetic wheel l2 that can be attached to the object 5 such as an iron plate.
a-I2d, and the left and right magnetic wheels are independently driven by a traveling drive device (not shown). Further, a pantograph driving mechanism 13 is mounted on the truck rr.

This machine Fp+x3 is for driving the pantograph mechanism 14 formed by the arms 14a to 14d, and consists of rotating the rotary table I6 to which the motor 15a is attached using another motor Z5b. There is. Set 1:
One end of each of the two arms Z4a@Z4d is horizontally rotatably supported on the rotary table I6, and the other two arms 14b and Z4
One end of the valley c is the arm 14a and Z4, respectively.
It is pivoted horizontally at the other end of the valley b. In addition, each end of the arms 14b and 14c is connected to a horizontal rotation mark via a shaft I7, and the shaft 17 has a local portion 7J (
4't holding the immersion ultrasound probe I8, 4. W
, (Water 18a is connected. And Z9 in the marking device is also stored in the seventh abductor holding (X Z 8 a).

In addition, target 1. [1 One motor 15a is arm I 4a
.

14d1sho10) In January, 1 ship was adjusted by 1ihjl and exceeded ℃ tδ
Q]: Shiba hornworm] -18 X force same ← machine -' , move forward and backward to the intersection (100,000 IL). The other motor l54) rotates the rotary table I6 to rotate the arms i4a to Z4d7. The wire 20 ( −Yog) ℃ controlled.

There is a welding line detection device h21.22 in the Taichung 110'J i11 rear 81S.These detection devices~21.22 yes 4-remo 1 pair detection?:'?21
a.

2 Z b; From 22 a, 22 b/, r:
Well, each pair of detectors is a story! It is set in the form of giving up on the 6th line of the A-shaped provisional eradication. , when one of the detectors approaches the welding line 6 with JC, n1
1. Travel jll (Output the detection part position detection signal to the moving button 111, make the traveling drive device perform the track correction W?,
It moves (forces) along the welding line 6.

Next, the operation of the 11 (stone wave stirring device j+4'1) configured as above will be explained. Subject 5
0 reflected on both sides (7 θ reaches 61 when there is a defect in the weld) Reflected at the defect position, 1 reflected wave is received by the super head detector 1B. - 10,000, units The traveling drive device mounted on jtLII is capable of detecting welding lines.
℃ magnet heavy wheels 12a-12d after receiving the signal from 22
The left and right sides are not moved separately, and the table surface lZf bath tangent line 6? Run e. Furthermore, the arm I' mounted on the table ZZ
By moving one motor Z5a5 of the driving eye structure I3, the arm I 4a, r 4d til
The angle of t changes, which causes the ultrasonic probe-1-Z8
moves forward and backward in the X direction perpendicular to the welding line 6.

Talented 1. Rano-] inside! I! II Kiwo No.5 [Sugi A)
, (b) and (c). FIG.
At the same time, by converting the corner 15 between the arms 14a and 14d into S'p, the probe 3-rs can be changed to X million times. j(
3 drive operation, 5 seconds touch + 18'r by the combination
Itte is a thing.The sword at this time is
East It i"jp Shima 1] Fake) 24 'q<-Dingyoku f
It zigs in a zigzag shape.

In addition, Figure 5 (a), (C1 is, for example, when the bogie 110J runs Bi1 beginning 1ijti, or 2j'Winter I]゛) and 21
〜 (bl OJ ! I; jJ work (scanning)
'C6 no fusa r↓! i"il'i D: It scans S times. That is, 4 ma ← C1'J) 6 end r?1
≦Begging inspection knife 2. Totoha, Tairu Illgo, 1jnk J,
Leave the motor 15b as it is! Arms 14a to 14df are integrated with rotating table I6 depending on the direction of rotation.
By combining the operation of interlocking the circular arc (-15a, change the angle 1 distance of the curve of arms 14a and 14d), move the probe q-rs in the Y direction -\4ji 1+f, Or, (b) force field τ'-1
And at the end of N'14, +' can be written as a small IC power ＼71゛ item.

C'J, k 5 il, -:・ij O,) Roux 11
Welding line 6FI: 15 minutes/to] (i:'+r)
+:'11'IH・delicious, i-・praise”r /IQ JC
11)! iI': When a defect is detected at 3-18, the 7th 14th return is manually applied to the marking device 19, and the dye is sprayed at that position, and the defect detection position 1; Indicated on the contact specimen.

By adopting such a configuration, guide rails and rails such as those in Ii'L rice are no longer required, and it is possible to control the fixed range of the probe (μmona (unlimited self-talk). Table IZ?: It can also be scanned in a stopped state, so it can be used even in narrow spaces.Furthermore, the marking device 1g sprays paint on defective locations, making it possible to spot defects.

Accurate position confirmation is possible without the hassle of checking on the contact surface of one side.

[Buwo Akira OJ effect]

As described above, according to the present invention, the tilting range of the probe is not limited, and it is possible to perform eye movement setting, and it can be used even in a narrow place.
Approved! ``Il, II'' can be performed in a direct manner using a wave agitation device.

[Brief explanation of drawings]

Figures 1 and 2 are conventional examples; a plan view and a front view; Figures 3 and 4; 1 and 1 of the present invention;
ir: Plan of ultrasonic operation 111 in example, tL; + figure and front view, 5th B'; l (al, (b),
(CL is LI: □ L Mika I FYJ IM OK Super Hondazawa Owl 1 Killer 7 IMI, Q] Painless π11 clear diagram. :: I-shaped Tokashima 8I5), II...1 company, 13...to Sai,
1st place, 14th...Bantagrano Jay i (%, l
4a-14d-'7-me, l5alI5b...
Tanabata, 1G... Turntable, I8...H (箭 d ji 1 corner! I! child, I9... Marking Hit: +, 21
．． 22... Molten wire (large and small equipment 11゜

Claims (1)

[Claims] a script, a detection device that detects the position of a linear flaw inspection target IS gripped by the script and moves the script along the flaw detection target fg (S position detection double) at ℃7; A pantograph mechanism installed in the script, and a device housed in the pantograph mechanism that transmits an ultrasonic beam to the part to be inspected and receives the reflected waves to detect defects existing in the part to be inspected. The ultrasonic probe mounted on the 1Vil recorder is moved perpendicularly or parallelly to the flaw 815 to be detected by driving the pantograph mechanism. A driving groove for performing set feeding, and a marking that is attached to the pantograph mechanism together with the detection angle and marks the defect detection position according to the defect detection position when a defect is detected by the ultrasonic probe. Equipment and tools 1 + N (L's: +: Ultrasonic flaw detection equipment as enemy.