JPH0467627B2 - - Google Patents
Info
- Publication number
- JPH0467627B2 JPH0467627B2 JP59119760A JP11976084A JPH0467627B2 JP H0467627 B2 JPH0467627 B2 JP H0467627B2 JP 59119760 A JP59119760 A JP 59119760A JP 11976084 A JP11976084 A JP 11976084A JP H0467627 B2 JPH0467627 B2 JP H0467627B2
- Authority
- JP
- Japan
- Prior art keywords
- inspected
- rotating body
- roll
- rotating
- probe
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 38
- 239000000523 sample Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims 1
- 238000012037 user site testing Methods 0.000 description 12
- 239000003562 lightweight material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- G01N29/27—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the material relative to a stationary sensor
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、回転超音波探傷（以下、回転UST
と云う）の搬送装置のうちで、探触子が非接触式
の装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a rotary ultrasonic flaw detection system (hereinafter referred to as a rotary UST).
This is a type of transport device in which the probe is a non-contact type.
回転USTとは、被検査材、例えば鋼管等を軸
方向に移動しながら、この軸を中心として上記被
検査材の外側に設けて回転する探触子から発する
超音波によつて、上記被検査材と探触子とのなす
相対運動の軌跡、すなわちスパイラル軌跡により
被検査材の傷を検出する装置である。このような
回転USTの従来の装置としては第３図に示すも
のがある。第３図イは接触式、同じくロは非接触
式のそれぞれの探触子の位置における上記の軸に
直角な断面図である。イ，ロ両図において、１１
は被検査材、１２は被検査材１１と同軸の回転
体、１３は探触子で回転体１２に保持されて、図
示のない超音波（通常は0.5〜10MHz）発生装置
より伝播されてくる音束を被検査材１１へ照射す
るようになつている。ロ図における１４は上記の
超音波の音束を媒介する、例えば水等の接触媒質
である。
Rotating UST is a method of moving a material to be inspected, such as a steel pipe, in the axial direction and using ultrasonic waves emitted from a probe that is installed outside the material to be inspected and rotating around this axis. This is a device that detects flaws on a material to be inspected based on the trajectory of the relative movement between the material and the probe, that is, the spiral trajectory. A conventional device for such a rotating UST is shown in FIG. FIG. 3A is a contact-type probe, and FIG. 3B is a non-contact type probe at its position at a right angle to the above-mentioned axis. In both figures A and B, 11
is a material to be inspected, 12 is a rotating body coaxial with the material to be inspected 11, and 13 is a probe, which is held on the rotating body 12 and is propagated by an ultrasonic (usually 0.5 to 10 MHz) generator (not shown). The sound beam is irradiated onto the material 11 to be inspected. 14 in the figure is a couplant such as water, which mediates the above-mentioned ultrasonic sound beam.
通常は、上記イ図に示した接触式の場合、被検
査材に入射する超音波音束と、この音束の反射波
との音響結合上の理由で、探触子１３の回転速度
（周速）に制限があるため、単位時間内に行なわ
れる被検査材１１の傷等の検出能力が、上記音響
結合が優れている非接触式の場合と比較して劣る
とされている。 Normally, in the case of the contact type shown in Figure A above, the rotational speed (circumference) of the probe 13 is Because of the limited speed, the ability to detect flaws, etc. on the inspected material 11 within a unit time is said to be inferior to that of the non-contact type, which has excellent acoustic coupling.
一方、非接触式の回転USTは、上記のように
超音波の音響結合が優れているので、接触式と比
べると、探触子１３の回転速度を大きくすること
ができる。このため、同一時間内で得られる上記
のスパイラル軌跡は当然多くなり、従つて探傷作
業の効率が高い利点はあるが、一方、ロ図におけ
る被検査材１１と探触子１３との相対位置の安定
性および被検査材１１と探触子１３との間に必ら
ず接触媒質１４が十分に介在していることが、探
傷検出上の必須条件になつており、これらの２つ
の条件を満たすことができないと、不正確な、場
合によつては全く検出不可能な結果を招くなどの
欠点があつた。 On the other hand, since the non-contact type rotating UST has excellent acoustic coupling of ultrasonic waves as described above, the rotation speed of the probe 13 can be increased compared to the contact type. Therefore, the number of spiral trajectories described above that can be obtained within the same amount of time naturally increases, which has the advantage of high flaw detection efficiency. Stability and the presence of a sufficient amount of couplant 14 between the inspected material 11 and the probe 13 are essential conditions for flaw detection, and these two conditions must be met. Failure to do so has disadvantages, such as inaccurate and, in some cases, completely undetectable results.
上記の従来技術の問題を具体例を示して、さら
に詳しく説明する。第１に自重タワミ量の影響に
ついて、例えば回転体１２の処理能力が2500mmの
回転USTの場合、回転体１２とこれを支持する
ピンチロールとの間隔が約500mmあると、片持梁
のタワミの最大条件としてはスパンが3000mmとな
る。第４図は上記条件の装置の場合のスパンに対
するタワミ量の実測値を示した線図で、被検査材
の鋼管の外径88.9mm、肉厚10.3mm、スパン3000mm
の場合のタワミ量が約５mmになることを示してい
る。一般に非接触式のの場合の探触子１３から被
検査材１１へ投射する音束の入射角の精度を勘案
した検出能力の限度としては、いわゆる芯ずれ
量、すなわち上記のタワミ量が２mmとされている
ので、この場合はタワミ量が検出能力限度を超過
しており、回転USTは使用できない。 The above-mentioned problems of the prior art will be explained in more detail by showing specific examples. First, regarding the influence of the amount of deflection due to its own weight, for example, in the case of a rotating UST with a processing capacity of the rotating body 12 of 2500 mm, if the distance between the rotating body 12 and the pinch roll supporting it is approximately 500 mm, the deflection of the cantilever beam will be The maximum condition is a span of 3000mm. Figure 4 is a diagram showing the actual measured values of the amount of deflection with respect to the span in the case of the equipment under the above conditions.
This shows that the amount of deflection is approximately 5 mm in the case of . In general, in the case of a non-contact type, the detection capability limit, which takes into account the accuracy of the angle of incidence of the sound beam projected from the probe 13 to the inspected material 11, is that the so-called misalignment amount, that is, the above-mentioned deflection amount, is 2 mm. Therefore, in this case, the amount of deflection exceeds the detection capability limit, and rotating UST cannot be used.
第２に、軽量材の管端振動による影響について
みると、例えば被検査材が管肉厚3.5mm以下の軽
量材の場合、管端部に回転体１２内の接触媒質１
４によつて振動が起り、水切れおよび芯ずれが発
生して検出値に疑指示の信号が生じ、回転UST
としての機能を失う事例があつた。 Second, regarding the influence of tube end vibration on lightweight materials, for example, when the material to be inspected is a lightweight material with a tube wall thickness of 3.5 mm or less, the couplant inside the rotating body 12 is attached to the tube end.
4 causes vibration, water shortage and misalignment occur, causing a suspicious indication signal in the detected value, and the rotating UST
There have been cases where the function of the device has been lost.
以上のように従来の回転UST装置は、回転体
が長くなると自重によるタワミ量が多くなつた
り、被検査材１１が薄肉の軽量材であると、管端
部において接触媒質１４の水切れあるいは管端の
振動による芯ずれによつて探傷機能を失うなどの
問題があつた。 As described above, in the conventional rotary UST device, the longer the rotating body is, the more the amount of deflection due to its own weight increases, and when the material 11 to be inspected is a thin and lightweight material, water leakage of the couplant 14 at the tube end or There were problems such as loss of flaw detection function due to misalignment due to vibration.
本発明は、上記の問題点を解決するためになさ
れたもので、被検査材の自重によるタワミ量およ
び被検査材が軽量の場合の振動による影響を最小
限に抑制することのできる回転体UST装置を得
ることを目的としている。
The present invention has been made to solve the above problems, and is a rotating body UST that can minimize the amount of deflection due to the weight of the inspected material and the influence of vibration when the inspected material is lightweight. The purpose is to obtain equipment.
本発明は、上記の目的を達成すべくなされたも
ので、所定距離離隔させて配置した２組のピンチ
ロールによつて案内される被検査材を軸方向に移
動しながら、上記２組のピンチロール間に配置さ
れかつ上記被検査材と同軸で回転する回転体に設
けられた探触子からの超音波音束によつて上記被
検査材をその先端から末端まで探傷する装置にお
いて、上記２組のピンチロール間における上記回
転体の被検査材進行方向の前後と該回転体内と
に、この回転体内に進入し通過する上記被検査材
を吸着保持する磁化された複数のローラを設けた
回転体UST装置を提供するものである。
The present invention has been made to achieve the above-mentioned object, and while moving in the axial direction a material to be inspected guided by two sets of pinch rolls arranged a predetermined distance apart, the two sets of pinch rolls are In the apparatus for detecting flaws in the material to be inspected from its tip to its end using an ultrasonic sound beam from a probe provided on a rotating body arranged between rolls and rotating coaxially with the material to be inspected, A rotating body in which a plurality of magnetized rollers are provided in front and back of the rotating body in the direction of movement of the inspected material between the pair of pinch rolls, and within the rotating body, for attracting and holding the inspected material that enters and passes through the rotating body. The present invention provides a body UST device.
以下、この発明の一実施例を図によつて説明す
る。第１図において、１は被検査材、２は入側ピ
ンチロール、３は回転体、４は出口ピンチロー
ル、５は入側ロール、６は回転体内ロール、７は
出口ロールで、これらの入側ロール５、回転体内
ロール６および出側ロール７は従来の回転UST
に対して、本発明によつて新らしく設けた部材
で、それぞれのロールは磁化されている。８は検
出部で従来例で説明した探触子等が設けられてい
る。
Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In Fig. 1, 1 is the material to be inspected, 2 is the input pinch roll, 3 is the rotating body, 4 is the outlet pinch roll, 5 is the input roll, 6 is the roll inside the rotating body, and 7 is the exit roll. The side roll 5, the rotating inner roll 6 and the exit roll 7 are conventional rotating USTs.
In contrast, each roll is magnetized in a new element according to the invention. Reference numeral 8 denotes a detection section, which is provided with the probe and the like described in the conventional example.
次に、動作について説明する。第１図よりみ
て、左より右方へ進入する被検査材１は、まず入
側ピンチロール２によつて挾持され、さらに被検
査材１が右方へ移動して行くと、次の入側ロール
５に磁力によつて吸着、保持されながら移動し、
回転体３と共に回転している検出部８で超音波探
傷される。 Next, the operation will be explained. As seen from Fig. 1, the inspected material 1 entering from the left to the right is first pinched by the entry side pinch rolls 2, and as the inspected material 1 further moves to the right, it moves to the next entry side. It moves while being attracted and held by the roll 5 by magnetic force,
Ultrasonic flaw detection is performed by the detection unit 8 rotating together with the rotating body 3.
２個の回転体内ロール６は、上記動作で探傷さ
れ右方へ移動してきた被検査材１を磁力により吸
着、保持し、さらには、同様にして出口ロール７
によつても被検査材１が吸着、保持されるので、
被検査材１のタワミ、振動を最小限に抑制するこ
とが可能となる。 The two rotary inner rolls 6 attract and hold the inspected material 1 which has been detected by the above operation and moved to the right by magnetic force, and are further moved to the exit roll 7 in the same manner.
The material to be inspected 1 is also attracted and held by the
It becomes possible to suppress the deflection and vibration of the inspected material 1 to a minimum.
第２図は上記の２個の回転体内ロール６のロー
ルホルダ９に保持された回転体内の構成を示す一
部断面図である。 FIG. 2 is a partial sectional view showing the internal structure of the rotary body held by the roll holder 9 of the two rolls 6 in the rotary body.
以上のように本発明によれば、所定距離離隔さ
せて配置した２組のピンチロールによつて案内さ
れる被検査材を軸方向に移動しながら、上記２組
のピンチロール間に配置されかつ上記被検査材と
同軸で回転する回転体に設けられた探触子からの
超音波音束によつて上記被検査材をその先端から
末端まで探傷する装置において、上記２組のピン
チロール間における上記回転体の被検査材進行方
向の前後と該回転体内とに、この回転体内に進入
し通過する上記被検査材を吸着保持する磁化され
た複数のローラを設けたので、被検査材の自重に
よる該被検査材の回転体内部でのタワミや振動を
防止でき、これにより、被検査材の先端から末端
まで品質保証が可能で、かつ工程渋滞、生産停止
を減少させることができるという効果がある。
As described above, according to the present invention, while moving in the axial direction the inspected material guided by the two sets of pinch rolls arranged a predetermined distance apart, the In the apparatus for detecting flaws in the material to be inspected from its tip to its end using an ultrasonic sound beam from a probe provided on a rotary body that rotates coaxially with the material to be inspected, the A plurality of magnetized rollers are provided before and after the rotating body in the direction of movement of the inspected material, and within the rotating body, to attract and hold the inspected material that enters and passes through the rotating body. It is possible to prevent the deflection and vibration of the inspected material inside the rotating body, which makes it possible to guarantee quality from the tip to the end of the inspected material, and to reduce process congestion and production stoppages. be.
第１図はこの発明の一実施例を示す回転UST
の構成図、第２図は第１図における回転体内部ロ
ーラの構成の詳細を示す一部断面図、第３図は接
触式と非接触式との場合における被検査材と探触
子との相対位置を示す断面図、第４図は被検査材
とタワミ量との関係を示す線図である。
図において、１は被検査材、２は入側ピンチロ
ール、３は回転体、４は出口ピンチロール、５は
入側ロール、６は回転体内ロール、７は出口ロー
ル、８は検出部。
FIG. 1 shows a rotating UST showing an embodiment of this invention.
Fig. 2 is a partial cross-sectional view showing details of the structure of the internal roller of the rotating body in Fig. 1, and Fig. 3 shows the relationship between the inspected material and the probe in the contact type and non-contact type. A cross-sectional view showing the relative position, and FIG. 4 is a diagram showing the relationship between the inspected material and the amount of deflection. In the figure, 1 is a material to be inspected, 2 is an entrance pinch roll, 3 is a rotating body, 4 is an exit pinch roll, 5 is an entrance roll, 6 is a roll inside the rotating body, 7 is an exit roll, and 8 is a detection unit.
Claims (1)
ールによつて案内される被検査材を軸方向に移動
しながら、上記２組のピンチロール間に配置され
かつ上記被検査材と同軸で回転する回転体に設け
られた探触子からの超音波音束によつて上記被検
査材をその先端から未端まで探傷する装置におい
て、上記２組のピンチロール間における上記回転
体の被検査材進行方向の前後と該回転体内とに、
この回転体内に進入し通過する上記被検査材を吸
着保持する磁化された複数のローラを設けたこと
を特徴とする回転超音波探傷装置。1. While moving in the axial direction the inspected material guided by two sets of pinch rolls arranged a predetermined distance apart, the inspection object is arranged between the two sets of pinch rolls and rotates coaxially with the inspected material. In an apparatus for flaw-detecting the above-mentioned object to be inspected from its tip to its end using an ultrasonic sound beam from a probe provided on a rotating body, the object to be inspected progresses between the two sets of pinch rolls. Before and after the direction and inside the rotating body,
A rotary ultrasonic flaw detection apparatus characterized by being provided with a plurality of magnetized rollers that attract and hold the inspected material that enters and passes through the rotating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59119760A JPS60263855A (en) | 1984-06-13 | 1984-06-13 | Rotary ultrasonic wave flaw detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59119760A JPS60263855A (en) | 1984-06-13 | 1984-06-13 | Rotary ultrasonic wave flaw detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60263855A JPS60263855A (en) | 1985-12-27 |
| JPH0467627B2 true JPH0467627B2 (en) | 1992-10-28 |
Family
ID=14769491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59119760A Granted JPS60263855A (en) | 1984-06-13 | 1984-06-13 | Rotary ultrasonic wave flaw detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60263855A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6090263B2 (en) * | 2014-08-27 | 2017-03-08 | Ｊｆｅスチール株式会社 | Inspected material position adjustment mechanism in non-destructive inspection equipment for long materials |
| CN113624844A (en) * | 2021-08-06 | 2021-11-09 | 临沂利信铝业有限公司 | Equipment for aluminum part quality inspection and using method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5046186A (en) * | 1973-08-28 | 1975-04-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5879261U (en) * | 1981-11-24 | 1983-05-28 | 日本クラウトクレ−マ−株式会社 | Centering mechanism in rotating ultrasonic flaw detection equipment |
-
1984
- 1984-06-13 JP JP59119760A patent/JPS60263855A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5046186A (en) * | 1973-08-28 | 1975-04-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60263855A (en) | 1985-12-27 |
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