JPS6394153A - Ultrasonic flaw detecting method - Google Patents
Ultrasonic flaw detecting methodInfo
- Publication number
- JPS6394153A JPS6394153A JP61240077A JP24007786A JPS6394153A JP S6394153 A JPS6394153 A JP S6394153A JP 61240077 A JP61240077 A JP 61240077A JP 24007786 A JP24007786 A JP 24007786A JP S6394153 A JPS6394153 A JP S6394153A
- Authority
- JP
- Japan
- Prior art keywords
- probe
- flaw detection
- holder
- probe surface
- wheels
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title description 19
- 239000000523 sample Substances 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000007654 immersion Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000002775 capsule Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分骨」
本発明は金属板材等の傷を探傷する超音波探傷方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application" The present invention relates to an ultrasonic flaw detection method for detecting flaws in metal plates and the like.
「従来の技術」
パルス反射法により金属材等の傷を探傷する超音波探傷
法では直接接触法や水浸法等が採用されており、殊に水
浸法では全没水浸法や局部水浸法等による探傷が行なわ
れている。たとえば第5図示のような全没水浸法では被
試験材Aと探触子Bを水槽O内の水り中に全没させて超
音波探傷をし、局部水浸法のうち第6図示のような水洗
法、噴流水便法等と称せられる方法では、探触子Bを入
れたケースEに水りを送給して溢れさせながら被試験材
Aの下面に添わせて探傷をし、第7図示のようにカプセ
ル7を用いる方法では内部に探触子Bと水りを封入し底
面部をプラスチック膜Gで閉塞したカプセルFを被試験
材Aの上面に置きこの膜Gと被試験材Aの探傷面の間に
水、油等の接触媒質を介在させて探傷する方法が行なわ
れている。"Conventional technology" Ultrasonic flaw detection, which detects flaws in metal materials using the pulse reflection method, employs direct contact methods and water immersion methods. Flaw detection is performed using immersion methods, etc. For example, in the total immersion method shown in Figure 5, the test material A and probe B are completely immersed in water in a water tank O for ultrasonic flaw detection, and in the local water immersion method shown in Figure 6, In a method called the water washing method or the water jet method, water is sent to the case E containing the probe B, and while the probe B is placed over the bottom surface of the material A to be tested, the flaws are detected. In the method using a capsule 7 as shown in Fig. 7, a capsule F with a probe B and a water container sealed inside and a bottom portion closed with a plastic film G is placed on the top surface of the material to be tested A, and this film G and the capsule F are placed on top of the material to be tested A. A flaw detection method is used in which a couplant such as water or oil is interposed between the flaw detection surfaces of the test material A.
また探触子Bの探触子面と被試験材Aの探傷面との間の
間隔を、前記の各水浸法のように大なる間隔にせずにむ
しろ直接接触法のようにきわめて小さいギャップにする
第8図示のようなギヤツブ水浸法では、下面を開口した
ホルダーH内に収納した探触子Bの探触子面と被試験材
Aの探傷面の間の間隔をα3〜α8II+鳳程度の間隔
に保ち、このホルダーH内にホースJから水りを送給し
ながら被試験材Aの上面に移動させて探傷をしている。In addition, the distance between the probe surface of probe B and the flaw detection surface of test material A is not set to a large distance as in each of the water immersion methods described above, but rather as an extremely small gap as in the direct contact method. In the gear immersion method as shown in Figure 8, the distance between the probe surface of probe B housed in holder H with an open bottom and the flaw detection surface of test material A is α3 to α8II + Flaw detection is carried out by moving the holder H onto the upper surface of the test material A while feeding water from the hose J into the holder H.
「発明が解決しようとする問題点」
前記のような従来の各探傷法はいずれも作業性が良好で
はなかった。たとえば前記の第5図示の全没水便法では
被試験材を水槽0内に入れるために大なる被試験材には
適用できないばかりでなく設備費や諸経費が高価となり
、第6図示の噴流水便法では重量の大なる被試験材には
適用できず、第7図示のカプセル法では接触媒質の量が
変動すると一定した検出能力を保つことができない。ま
た第8図示のギヤツブ水浸法は第9図示のようにモニタ
Mに連なる電気フードLのはかに給水栓Kからもホース
Jが伸びてホルダーHに連結されておりこのホルダーH
を手で持って被試験材A上を走査するのでホースJが巻
きついて作業性が悪くなるだけでなく、探触子Bの探触
子面と被試験材Aの探傷面の間の間隔が変動し易く一定
した検出能力が得られないという問題点があった。"Problems to be Solved by the Invention" None of the conventional flaw detection methods described above had good workability. For example, in the above-mentioned total submersion method shown in Figure 5, the test material is placed in the water tank 0, which is not only inapplicable to large test materials, but also requires high equipment and miscellaneous expenses. The water stool method cannot be applied to heavy test materials, and the capsule method shown in Figure 7 cannot maintain a constant detection ability when the amount of couplant varies. In addition, in the gear immersion method shown in Figure 8, a hose J extends from a faucet K of an electric hood L connected to a monitor M and is connected to a holder H, as shown in Figure 9.
Since the probe is scanned over the test material A by hand, the hose J gets wrapped around it, making it difficult to work. There was a problem that it was easy to fluctuate and a constant detection ability could not be obtained.
そこで本発明は、前記のような問題点がなく作業性が良
好で検出能力が安定した超音波探傷方法を提供するもの
である。Therefore, the present invention provides an ultrasonic flaw detection method that does not have the above-mentioned problems, has good workability, and has stable detection ability.
「間頴点を解決するための手段」
前記の問題点を解決するために本発明の超音波探傷方法
は、ホルダー内に設置した探触子の探触子面と被試験材
の探傷面との間の間隔を微小間隔に保持し、その探触子
面と探傷面との間に接触媒質を介在させて超音波探傷を
行なう方法において、ホルダーの底部に車輪を設け、被
試験材の探傷面を走査するときにこの車輪によって接触
媒質を探触子面の下方に寄せ集めるようにしたものであ
る。"Means for Solving Intermediate Points" In order to solve the above-mentioned problems, the ultrasonic flaw detection method of the present invention uses In this method, ultrasonic flaw detection is performed by interposing a couplant between the probe surface and the flaw detection surface, while maintaining a very small distance between the probe surface and the flaw detection surface. The wheels gather the couplant below the probe surface as the surface is scanned.
「作 用」
前記のホルダー底部に設けた車輪は探触子の探触子面と
被試験材の探傷面との間の間隔を一定に保持するととも
に、探触子が被試験材上を移動するときにこの車輪によ
って接触媒質を探触子面の下方に寄せ集めるものである
。``Function'' The wheels installed at the bottom of the holder maintain a constant distance between the probe surface of the probe and the flaw detection surface of the material under test, and also allow the probe to move over the material under test. This wheel gathers the couplant below the probe surface.
「実施例」
以下本発明の実施例を第1図乃至第4図により説明する
。第1図は本発明の超音波探傷方法において使用する超
音波探傷装置の上面を示し、第2図はその正面を1部所
面にて示し、第3図はその操作状況を示し、第4図は車
輪の移動と接触媒質の関係を示したものである。"Embodiments" Examples of the present invention will be described below with reference to FIGS. 1 to 4. FIG. 1 shows the top of the ultrasonic flaw detection device used in the ultrasonic flaw detection method of the present invention, FIG. The figure shows the relationship between wheel movement and couplant.
第1図、第2図において、1はホルダーであり、2はそ
の中央部に垂直に設けた探触子嵌挿孔、3はその嵌挿孔
上端の肩部、4はホルダー側面から前記嵌挿孔2に向け
て貫通するネジ孔、5はこのネジ孔4に螺入した固定ネ
ジである。1 and 2, 1 is a holder, 2 is a probe insertion hole provided vertically in the center of the holder, 3 is a shoulder at the upper end of the insertion hole, and 4 is a probe insertion hole provided from the side of the holder. A screw hole 5 penetrating toward the insertion hole 2 is a fixing screw screwed into the screw hole 4.
6.7.8は前記ホルダー1の底部に設けた車輪であり
、この各車輪のうち、6.7は前輪でホルダー1の底部
前端の両側に設け、8は自由に方向が変換できるように
した後輪でホルダー1の底部後端の中央部に設ける。9
は各車輪の軸である。6.7.8 are wheels provided at the bottom of the holder 1. Of these wheels, 6.7 are front wheels and are provided on both sides of the front end of the bottom of the holder 1, and 8 is a wheel so that the direction can be changed freely. The rear wheel is provided at the center of the rear end of the bottom of the holder 1. 9
is the axis of each wheel.
1oは探触子であり、これを前記の嵌挿孔2に嵌挿して
探触子上端の鍔部11を嵌挿孔上端の肩部3に掛止する
とともに探触子下端の音波送受口を有する探触子面12
をホルダー1の底部に突出させ、この探触子10の側面
を前記の固定ネジ5で押えて固定する。13は探触子1
0から伸びてモニタに連なる電気コードである。Reference numeral 1o denotes a probe, which is inserted into the above-mentioned insertion hole 2, and the flange 11 at the upper end of the probe is hooked to the shoulder 3 at the upper end of the insertion hole, and the sound wave transmitting/receiving port at the lower end of the probe is attached. A probe face 12 having
The probe 10 is made to protrude from the bottom of the holder 1, and the side surface of the probe 10 is pressed and fixed with the aforementioned fixing screw 5. 13 is probe 1
It is an electrical cord that extends from 0 and connects to the monitor.
前記の車輪6.7.8は探触子10の探触子面12と被
試験材の探傷面との間の間隔を一定に保持するものであ
り、望ましくは02mm乃至0.4141程度の範囲の
間隔に保持するように各車輪6.7.8の径と取付は高
さおよび探触子10の固定位置を設定する。The wheels 6.7.8 are used to maintain a constant distance between the probe surface 12 of the probe 10 and the flaw detection surface of the test material, preferably in the range of about 0.2 mm to 0.414 mm. The diameter and mounting height of each wheel 6.7.8 and the fixed position of the probe 10 are set so as to maintain the distance between the wheels 6.7.8.
前記のようにホルダー1に装着した探触子1oから伸び
る電気コード13は第3図示のようにモニタ14に接続
し、このホルダーlを第3図示のように金属材等の被試
験材Aの上面に置いてその探傷面を走査し超音波探傷を
行なうのであるが、まず被試験材Aの上面に水等の接触
媒質Wを撒水してその上にホルダー1を置く。この状態
は第2図示のようにホルダー底部から突出する探触子1
oの探触子面12が接触媒質W上に接触する状態となる
。The electric cord 13 extending from the probe 1o attached to the holder 1 as described above is connected to the monitor 14 as shown in the third figure, and the holder l is connected to the test material A such as a metal material as shown in the third figure. Ultrasonic flaw detection is carried out by placing the sample on the top surface and scanning the surface to be tested. First, a couplant W such as water is sprinkled on the top surface of the material to be tested A, and the holder 1 is placed on top of it. In this state, the probe 1 protrudes from the bottom of the holder as shown in the second figure.
The probe surface 12 of o is in contact with the couplant W.
このように探触子面12を接融媒質W上に接触させた状
態でホルダー1を被試験材A上に矢印X方向に走行移動
させて被試験材Aの探傷面を走査させると、被試験材上
面の接触媒質Wは、第4図示のようにホルダー1の底部
前端の両側に設けられて前進する前輪6.7の間を経て
探触子底部の探触平面12に接触し、またホルダー1の
底部後端の中央部に設けられて前進する後輪8に接触す
る接触媒質Wは、この前進する後輪8によって前方の探
触子面12の方に押し寄せられ集められるこセになる。With the probe surface 12 in contact with the welding medium W as described above, when the holder 1 is moved over the test material A in the direction of the arrow X and the flaw detection surface of the test material A is scanned, the flaw detection surface of the test material A is scanned. The couplant W on the upper surface of the test material passes between the forward moving front wheels 6.7 provided on both sides of the bottom front end of the holder 1, as shown in FIG. The couplant W, which is provided at the center of the rear end of the bottom of the holder 1 and comes into contact with the moving rear wheel 8, is pushed toward the front probe surface 12 and collected by the moving rear wheel 8. Become.
このため探触子面12と被試験材Aの探傷面との間には
常に接触媒質Wが存在している状態が保持されるのであ
る。このように各車輪6.7.8の配置は、後輪8を1
個としてホルダー1の底部後端の中央部に設けることが
必要であり、かりに、この後輪8をホルダー1の底部前
端の中央部に前輪として設けると、ホルダー1が前進す
るときにこの前端の中央部の前輪によって接触媒質Wが
排除されてしまうことになり、また後輪も前輪6.7と
同様にホルダー底部の両側に設けると、接触媒質Wは前
後の両側の車輪の間を通って探触子面12の方には寄せ
集められなくなり、所望の結果を得ることはできない。Therefore, the state in which the couplant W is always present between the probe surface 12 and the flaw detection surface of the material under test A is maintained. In this way, the arrangement of each wheel 6.7.8 is such that the rear wheel 8 is
If the rear wheel 8 is provided as a front wheel at the center of the bottom front end of the holder 1, when the holder 1 moves forward, The couplant material W will be removed by the front wheel in the center, and if the rear wheels are also provided on both sides of the bottom of the holder in the same way as the front wheel 6.7, the couplant material W will pass between the front and rear wheels. The particles are no longer gathered toward the probe surface 12, and the desired result cannot be obtained.
またこのように被試験材上面をホルダー1が走行移動す
るときは各車輪6.7.8が被試験材Aの上面に接して
走行するために、探触子10の探触子面12と被試験材
Aの探傷面との間の間隔が一定間隔に保持された状態で
走行することになる。In addition, when the holder 1 travels on the upper surface of the material to be tested in this way, each wheel 6, 7, 8 runs in contact with the upper surface of the material to be tested, so that the probe surface 12 of the probe 10 and The vehicle travels with the distance between the test material A and the flaw detection surface maintained at a constant distance.
このようにして探触子面12と探傷面との間の間隔が一
定間隔に保持されるとともに常に接触媒質Wが介在して
いる状態が保たれて探傷面の走査が行なわれるので、探
触子10は正確な検出信号を出力することができる。In this way, the distance between the probe surface 12 and the flaw detection surface is maintained at a constant interval, and the state in which the couplant material W is always present is maintained and the flaw detection surface is scanned. The child 10 can output accurate detection signals.
なお前記のホルダー1の両側面に操作棒取付は軸15.
16を突設してこれに第3図示のように操作棒17の下
端を取付け、この操作棒17を持ってホルダー1を被試
験材A上に移動させ走査するようにすることもできる。Note that the operating rods are attached to both sides of the holder 1 using the shafts 15.
16 may be provided protrudingly, and the lower end of an operating rod 17 may be attached to this as shown in the third figure, and the holder 1 may be moved and scanned over the material A to be tested by holding this operating rod 17.
「発明の効果」
前述のように本発明の超音波探傷方法は、ホルダーの底
部に車輪を設けることによって、探触子の探触子面と被
試験材の探傷面との間の間隔を一定の微小間隔に保持す
るとともに、被試験材の探傷面を走査するときに接触媒
質を探触子面の下方に寄せ集めるようにしたので、従来
のように探触子面と探傷面の間の間隔が変動するような
ことがなく、探触子は正確な検出信号を出力して探傷精
度の向上と被試験材の品質の安定化を実現することがで
きる。"Effects of the Invention" As mentioned above, the ultrasonic flaw detection method of the present invention maintains a constant distance between the probe surface of the probe and the flaw detection surface of the material under test by providing wheels at the bottom of the holder. In addition, when scanning the surface of the test material, the couplant is gathered below the probe surface, so that the space between the probe surface and the surface of the test material is kept as small as in the conventional method. The interval does not fluctuate, and the probe outputs accurate detection signals, improving flaw detection accuracy and stabilizing the quality of the material under test.
また水を送給するホースは使用しないから従来のように
ホースが巻きついて作業性を悪くするということもなく
探傷作業が迅速化し人件費を節減することができ、さら
に被試験材の大きさや型皿の制限がなくどのような被試
験材にも適用可能であり、探傷装置の経費が低減される
ものである。In addition, since no hoses are used to supply water, there is no need for hoses to wrap around and impair work efficiency as in the past, speeding up flaw detection and reducing labor costs. There is no restriction on the size of the plate, and it can be applied to any material to be tested, reducing the cost of flaw detection equipment.
第1図は本発明の方法に使用する装置の上面図、第2図
はその1部所面正面図、第3図は使用状態図、第4図は
車輪の作用説明図、第5図乃至第9図は従来例を示す図
面である。
1:ホルダー 6.7.8:車 輪
10:探触子 12:探触子面特許出願人
古河電気工業株式会社
代 理 人 弁理士 岡1) 喜久治(ほか1
名)
第5図 第6図
第7図 第8図
第9図
にFig. 1 is a top view of the apparatus used in the method of the present invention, Fig. 2 is a front view of a part thereof, Fig. 3 is a usage state diagram, Fig. 4 is an explanatory diagram of the operation of the wheels, and Figs. FIG. 9 is a drawing showing a conventional example. 1: Holder 6.7.8: Wheel 10: Probe 12: Probe surface Patent applicant Furukawa Electric Co., Ltd. Representative Patent attorney Oka 1) Kikuji (and others 1)
Figure 5 Figure 6 Figure 7 Figure 8 Figure 9
Claims (1)
傷面との間の間隔を微小間隔に保ち前記探触子面と探傷
面との間に接触媒質を介在させて超音波探傷を行なう方
法において、前記ホルダーの底部に車輪を設け、前記車
輪によつて前記接触媒質を前記探触子面の下方に寄せる
ことを特徴とする超音波探傷方法。The distance between the probe surface of the probe installed in the holder and the flaw detection surface of the test material is maintained at a very small distance, and a couplant is interposed between the probe surface and the flaw detection surface, and ultrasonic waves are applied. An ultrasonic flaw detection method characterized in that a wheel is provided at the bottom of the holder, and the couplant is moved below the probe surface by the wheel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61240077A JPS6394153A (en) | 1986-10-08 | 1986-10-08 | Ultrasonic flaw detecting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61240077A JPS6394153A (en) | 1986-10-08 | 1986-10-08 | Ultrasonic flaw detecting method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6394153A true JPS6394153A (en) | 1988-04-25 |
Family
ID=17054149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61240077A Pending JPS6394153A (en) | 1986-10-08 | 1986-10-08 | Ultrasonic flaw detecting method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6394153A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013142697A (en) * | 2012-01-09 | 2013-07-22 | Airbus Operations Ltd | Tool and method for operating transducer assembly |
-
1986
- 1986-10-08 JP JP61240077A patent/JPS6394153A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013142697A (en) * | 2012-01-09 | 2013-07-22 | Airbus Operations Ltd | Tool and method for operating transducer assembly |
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