JPH06137853A - Automatic beveling inspection device - Google Patents

Automatic beveling inspection device

Info

Publication number
JPH06137853A
JPH06137853A JP28585892A JP28585892A JPH06137853A JP H06137853 A JPH06137853 A JP H06137853A JP 28585892 A JP28585892 A JP 28585892A JP 28585892 A JP28585892 A JP 28585892A JP H06137853 A JPH06137853 A JP H06137853A
Authority
JP
Japan
Prior art keywords
plate thickness
beveling
groove
ultrasonic
cross
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.)
Granted
Application number
JP28585892A
Other languages
Japanese (ja)
Other versions
JP2630717B2 (en
Inventor
Koji Ishihara
耕司 石原
Takao Miyazaki
孝雄 宮崎
Akira Hagiwara
明 萩原
Toyokichi Kimura
豊吉 木村
Kazuo Okamoto
和夫 岡本
Takuo Sato
卓雄 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Kawasaki Heavy Industries Ltd
JFE Engineering Corp
Nippon Steel Corp
Original Assignee
Kawasaki Heavy Industries Ltd
Nippon Steel Corp
Sumitomo Metal Industries Ltd
Kawasaki Steel Corp
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd, Nippon Steel Corp, Sumitomo Metal Industries Ltd, Kawasaki Steel Corp, NKK Corp, Nippon Kokan Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP28585892A priority Critical patent/JP2630717B2/en
Publication of JPH06137853A publication Critical patent/JPH06137853A/en
Application granted granted Critical
Publication of JP2630717B2 publication Critical patent/JP2630717B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To measure the thickness of a beveling as well as root face by obtaining the cross-sectional form of the beveling by an optical device, an image sensing device, and a surface form estimating device, and the plate thickness of a base metal by a ultrasonic 1' plate thickness gauge, and by synthesizing the cross-section form of the beveling from these both data. CONSTITUTION:A laser beam 3 is led from a light source 4 to a beveling 2 of a welding base metal 1 through an optical fiber 6, and applied from a lens assembly 7 to focus an irradiation image by an image sensing device 5. After the image data has been binary-processed in an image processing device 8, it is transferred as a surface form data to a coordinate calculation device 9. Also a ultrasonic probe 11 of a ultrasonic plate thickness gauge 10 is located near the beveling 2 of the welding base metal 1, the plate thickness near the beveling 2 of the welding base metal 1 is measured by the ultrasonic plate thickness gauge 10, and the plate thickness is transferred to the coordinate calculation device 9. In the coordinate calculation device 9, the form coordinate of the beveling 2 is calculated from the surface form data and plate thickness to estimate the cross-section form of the beveling 2.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、溶接前に行う開先形状
の計測技術に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a groove shape measuring technique performed before welding.

【0002】[0002]

【従来の技術】従来、開先形状の測定は光切断法を利用
して行われている。例えば、図9は特開昭52−133
050号公報に開示された開先の表面形状測定の概念図
であって、溶接母材1の開先部2に対し、レーザ光線3
をレーザ光源4から照射して、その照射線像を撮像装置
5で撮像し、撮像した画像データから溶接母材1の表面
形状を推定するものである。図10は撮像した画像デー
タの例を示したもので、図中の黒丸部が画像データであ
って、L1,L2,L3の補助線を作成することで開先
の表面形状が推定できる。
2. Description of the Related Art Conventionally, the measurement of the groove shape has been carried out by utilizing a light cutting method. For example, FIG. 9 shows Japanese Patent Laid-Open No. 52-133.
It is a conceptual diagram of the surface shape measurement of the groove | channel disclosed by the No. 050 publication, Comprising: The laser beam 3 with respect to the groove part 2 of the welding base material 1.
Is irradiated from the laser light source 4, the irradiation line image is captured by the image capturing device 5, and the surface shape of the welding base material 1 is estimated from the captured image data. FIG. 10 shows an example of imaged image data. The black circles in the figure are image data, and the surface shape of the groove can be estimated by creating auxiliary lines L1, L2, L3.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うな従来の開先の形状測定では、開先の断面形状まで推
定できず、したがって開先の厚さやルートフェースまで
は測定することができなかった。本発明は、この課題を
解決するためになされたもので、開先の断面形状を推定
して、開先の厚さやルートフェースまで測定できる装置
を提供することを目的とする。
However, in such a conventional groove shape measurement, the sectional shape of the groove cannot be estimated, and therefore, the thickness of the groove and the root face cannot be measured. . The present invention has been made to solve this problem, and an object of the present invention is to provide an apparatus that can estimate the cross-sectional shape of a groove and measure the thickness of the groove and the root face.

【0004】[0004]

【課題を解決するための手段】本発明の自動開先検査装
置は、開先部にレーザ光を照射する光学装置と、この光
学装置からのレーザ光の照射線像を撮像する撮像装置
と、この撮像装置の撮像データから開先部の表面形状を
推定する表面形状推定装置と、開先部の近傍の板厚を測
定する超音波板厚計と、表面形状推定装置で得られた表
面形状と超音波板厚計で得られた板厚とから開先部の断
面形状を合成する断面形状推定装置とを備えたものであ
る。
An automatic groove inspection apparatus of the present invention is an optical apparatus for irradiating a laser beam to a groove portion, and an image pickup apparatus for picking up an irradiation line image of the laser beam from the optical apparatus. A surface shape estimation device that estimates the surface shape of the groove portion from the imaged data of this imaging device, an ultrasonic plate thickness gauge that measures the plate thickness near the groove portion, and a surface shape obtained by the surface shape estimation device. And a cross-sectional shape estimation device for synthesizing the cross-sectional shape of the groove portion from the plate thickness obtained by the ultrasonic plate thickness gauge.

【0005】[0005]

【作用】本発明においては、光学装置、撮像装置及び表
面形状推定装置で開先部の表面形状を得、超音波板厚計
で母材の板厚を得、これら両方のデータから断面形状推
定装置で開先部の断面形状を推定する。
In the present invention, the surface shape of the groove portion is obtained by the optical device, the image pickup device and the surface shape estimating device, the plate thickness of the base material is obtained by the ultrasonic plate thickness gauge, and the sectional shape is estimated from both of these data. The device estimates the cross-sectional shape of the groove.

【0006】[0006]

【実施例】図1は本発明の実施例を示す自動開先検査装
置の全体構成図である。開先の表面形状の測定は原則と
して従来と同じ構成であって、溶接母材1の開先部2に
対し、レーザ光3をレーザ光源4から光ファイバー6で
導き、レンズアッセンブリ7から照射して、撮像装置5
によってその照射線像を撮像する。さらに、撮像データ
を画像処理器8において2値化処理した後、表面形状デ
ータとして座標演算装置9へ転送する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall block diagram of an automatic groove inspection apparatus showing an embodiment of the present invention. In principle, the measurement of the surface shape of the groove has the same configuration as that of the conventional one, and the laser light 3 is guided from the laser light source 4 to the groove 2 of the welding base material 1 by the optical fiber 6 and is irradiated from the lens assembly 7. , Imaging device 5
The irradiation line image is captured by. Further, the image data is binarized by the image processor 8 and then transferred to the coordinate calculation device 9 as surface shape data.

【0007】また、超音波板厚計10の超音波探触子1
1を溶接母材1の開先部2近傍に配置し、超音波板厚計
10により溶接母材1の開先部2付近の板厚を計測し、
その板厚を座標演算装置9へ転送する。
Further, the ultrasonic probe 1 of the ultrasonic plate thickness gauge 10
1 is arranged in the vicinity of the groove 2 of the welding base metal 1, and the plate thickness in the vicinity of the groove 2 of the welding base metal 1 is measured by the ultrasonic plate thickness gauge 10.
The plate thickness is transferred to the coordinate calculation device 9.

【0008】座標演算装置9では、これらの表面形状デ
ータと板厚とから開先部2の形状座標を算出して開先部
2の断面形状を推定する。なお、開先形状演算装置12
は、座標演算装置9で算出した座標から、ルートフェー
ス、ルートギャップ、目違い、開先角度等を個々に算出
するためのものである。
The coordinate calculation unit 9 estimates the cross-sectional shape of the groove 2 by calculating the shape coordinates of the groove 2 from the surface shape data and the plate thickness. In addition, the groove shape calculation device 12
Is for individually calculating the root face, root gap, misalignment, groove angle, etc. from the coordinates calculated by the coordinate calculation device 9.

【0009】図2は座標演算装置9による断面形状推定
の説明図である。まず溶接母材1A,1Bの表面形状デ
ータから表面形状の座標を算出し、表面形状として、実
線a−b−cと実線f−g−hを得る。次に、実線a−
b、実線f−gを基準とし、溶接母材1A,1Bのそれ
ぞれの板厚に相当する間隔を有した位置を求め、底面形
状として、一点鎖線d−eと一点鎖線i−jを得る。ま
た、点cから一点鎖線d−eに垂線を下ろし、点hから
一点鎖線i−jに垂線を下ろし、ルートフェースとし
て、破線c−eと破線h−jを得る。なお、図2中、T
1,T2は溶接母材の板厚、θは開先角度、Dは目違
い、Gはルートギャップ、H1,H2はルートフェース
を示すものとする。
FIG. 2 is an explanatory diagram of cross-sectional shape estimation by the coordinate calculation device 9. First, the coordinates of the surface shape are calculated from the surface shape data of the welding base materials 1A and 1B, and a solid line abc and a solid line fgh are obtained as the surface shape. Next, the solid line a-
b and solid line f-g as a reference, the position which has a space | interval corresponding to each board | plate thickness of welding base material 1A, 1B is calculated | required, and dashed-dotted line d-e and dashed-dotted line i-j are obtained as a bottom face shape. In addition, a perpendicular is drawn from the point c to the dashed-dotted line d-e, and a perpendicular is drawn from the point h to the dashed-dotted line i-j, and a broken line c-e and a dashed line h-j are obtained as root faces. In addition, in FIG.
1 and T2 are plate thicknesses of the welding base metal, θ is a groove angle, D is a misalignment, G is a root gap, and H1 and H2 are root faces.

【0010】図3は本発明を鋼管の溶接開先部検査に用
いた概略斜視図である。ここでは、鋼管21の溶接開先
部付近に円周方向レール22を配し、円周方向レール2
2にはこのレール22をガイドとして鋼管21の周方向
にスライドするスライダ23を取付け、スライダ23に
は鋼管21の軸方向と平行に移動可能なアーム24を備
え、このアーム24に本発明の走査部を構成する撮像装
置5、レンズアッセンブリ7及び超音波探触子11を支
持する(本発明の他の構成部の表示は省略)。図4は図
3の全体構成図であって、20は走査部とデータ処理部
で表した本発明の自動開先検査装置、25はスライダ2
3及びアーム24の動きを制御する走査制御装置、26
は自動検査装置20及び走査制御装置25を制御すると
ともに走査制御装置25から転送される鋼管21の位置
座標と、自動検査装置20から転送される開先形状デー
タとを記憶装置27に記憶させる機能も有する。
FIG. 3 is a schematic perspective view of the present invention used for inspection of a weld groove of a steel pipe. Here, the circumferential rail 22 is arranged near the welding groove portion of the steel pipe 21, and the circumferential rail 2
A slider 23, which slides in the circumferential direction of the steel pipe 21 using the rail 22 as a guide, is attached to the slider 2, and the slider 23 is provided with an arm 24 that is movable parallel to the axial direction of the steel pipe 21. The image pickup device 5, the lens assembly 7, and the ultrasonic probe 11 that form a unit are supported (the display of other components of the present invention is omitted). 4 is an overall configuration diagram of FIG. 3, in which 20 is an automatic groove inspection apparatus of the present invention represented by a scanning unit and a data processing unit, and 25 is a slider 2.
A scanning controller for controlling the movement of the arm 3 and the arm 24;
Is a function of controlling the automatic inspection device 20 and the scanning control device 25 and storing the position coordinates of the steel pipe 21 transferred from the scanning control device 25 and the groove shape data transferred from the automatic inspection device 20 in the storage device 27. Also has.

【0011】なお、本発明の開先検査装置に、図5に示
すように白色光源28を備えれば、撮像装置5と共に用
いて目視検査を行うことができる。また、図6に示すよ
うに渦流センサ29と渦流測定器30を備えれば、鋼管
21等の縦シーム溶接部31の位置を検出することもで
きる。
If the groove inspection device of the present invention is provided with the white light source 28 as shown in FIG. 5, the visual inspection can be performed by using it together with the image pickup device 5. Further, as shown in FIG. 6, if the eddy current sensor 29 and the eddy current measuring device 30 are provided, the position of the vertical seam welded portion 31 of the steel pipe 21 or the like can be detected.

【0012】その他、開先検査装置には、鋼管21に打
刻してある刻印の読取機構を備えることもできる。これ
は、図7に示すように、レンズアッセンブリ7と撮像装
置5を用い、鋼管21の打刻部(図では数字の2)にレ
ーザ光を当てると、画像処理装置8の画像データは図8
の(a)のように、打刻数字に対応する箇所にくぼみ3
2を生じるので、これに2値化画像処理を施し、さらに
パターン認識を行うことによって、(b)のように数字
もしくは記号として識別できる。
In addition, the groove inspection device may be provided with a reading mechanism for markings stamped on the steel pipe 21. As shown in FIG. 7, when the lens assembly 7 and the imaging device 5 are used and a laser beam is applied to the engraved portion (numeral 2 in the figure) of the steel pipe 21, the image data of the image processing device 8 is obtained as shown in FIG.
As shown in (a) of Figure 3, the indentation is made at the location corresponding to the stamped number.
Since 2 is generated, it can be identified as a number or a symbol as shown in (b) by subjecting this to binarized image processing and further performing pattern recognition.

【0013】[0013]

【発明の効果】以上説明したように本発明によれば、光
学装置、撮像装置及び表面形状推定装置で開先部の表面
形状を、超音波板厚計で母材の板厚をそれぞれ得て、断
面形状推定装置でこれらを合成することにより、開先部
の断面形状を得ることが可能になった。さらに、本装置
により得られた開先部の断面形状データを、次の溶接工
程における溶接条件に反映させ、また溶接完了後の超音
波探傷試験における超音波探触子の位置設定に利用する
ことによって、高品質の溶接を保障できる効果がある。
As described above, according to the present invention, the surface shape of the groove portion is obtained by the optical device, the image pickup device and the surface shape estimating device, and the plate thickness of the base material is obtained by the ultrasonic plate thickness meter. By combining these with the cross-sectional shape estimation device, it becomes possible to obtain the cross-sectional shape of the groove. In addition, reflect the cross-sectional shape data of the groove obtained by this device in the welding conditions in the next welding process, and use it to set the position of the ultrasonic probe in the ultrasonic flaw detection test after welding is completed. This has the effect of ensuring high quality welding.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の開先検査装置の実施例を示す全体構成
図である。
FIG. 1 is an overall configuration diagram showing an embodiment of a groove inspection device of the present invention.

【図2】座標演算装置による断面形状推定の説明図であ
る。
FIG. 2 is an explanatory diagram of cross-sectional shape estimation by a coordinate calculation device.

【図3】本発明を鋼管の溶接開先部検査に用いた概略斜
視図である。
FIG. 3 is a schematic perspective view of the present invention used for inspection of a weld groove portion of a steel pipe.

【図4】図3の全体構成図である。FIG. 4 is an overall configuration diagram of FIG.

【図5】本発明の開先検査装置の一部を構成する目視検
査機構である。
FIG. 5 is a visual inspection mechanism forming a part of the groove inspection device of the present invention.

【図6】本発明の開先検査装置の一部を構成する縦シー
ム溶接部検出機構である。
FIG. 6 is a vertical seam welded portion detection mechanism forming a part of the groove inspection device of the present invention.

【図7】本発明の開先検査装置の一部を構成する刻印読
取機構である。
FIG. 7 is a marking reading mechanism forming a part of the groove inspection device of the present invention.

【図8】刻印読取機構の動作説明図である。FIG. 8 is an operation explanatory view of a marking reading mechanism.

【図9】従来の開先表面形状測定の概念図である。FIG. 9 is a conceptual diagram of conventional groove surface shape measurement.

【図10】撮像装置によって撮像した画像データの例で
ある。
FIG. 10 is an example of image data imaged by an imaging device.

【符号の説明】[Explanation of symbols]

1 溶接母材 2 開先部 3 レーザ光 4 レーザ光源 5 撮像装置 6 光ファイバー 7 レンズアッセンブリ 8 画像処理器 9 座標演算装置 10 超音波板厚計 11 超音波探触子 12 開先形状演算装置 DESCRIPTION OF SYMBOLS 1 Welding base material 2 Groove part 3 Laser light 4 Laser light source 5 Imaging device 6 Optical fiber 7 Lens assembly 8 Image processor 9 Coordinate calculation device 10 Ultrasonic plate thickness gauge 11 Ultrasonic probe 12 Groove shape calculation device

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 G01B 17/02 Z (71)出願人 000000974 川崎重工業株式会社 兵庫県神戸市中央区東川崎町3丁目1番1 号 (71)出願人 000004123 日本鋼管株式会社 東京都千代田区丸の内一丁目1番2号 (72)発明者 石原 耕司 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 宮崎 孝雄 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 萩原 明 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 木村 豊吉 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 岡本 和夫 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 佐藤 卓雄 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification number Internal reference number FI Technical indication location G01B 17/02 Z (71) Applicant 000000974 Kawasaki Heavy Industries, Ltd. 3 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo No. 1-1 (71) Applicant 000004123 Nippon Steel Pipe Co., Ltd. 1-2-1, Marunouchi, Chiyoda-ku, Tokyo (72) Inventor Koji Ishihara 1-2-1-2 Marunouchi, Chiyoda-ku, Tokyo 72) Inventor Takao Miyazaki 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Akira Hagiwara 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Toyokichi Kimura 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Tube Co., Ltd. (72) Inventor Kazuo Okamoto 1-chome, Marunouchi, Chiyoda-ku, Tokyo No. 1-2 Nihon Steel Pipe Co., Ltd. (72) Inventor Takuo Sato 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 開先部にレーザ光を照射する光学装置
と、この光学装置からのレーザ光の照射線像を撮像する
撮像装置と、この撮像装置の撮像データから開先部の表
面形状を推定する表面形状推定装置と、開先部近傍の板
厚を測定する超音波板厚計と、表面形状推定装置で得ら
れた表面形状と超音波板厚計で得られた板厚とから開先
部の断面形状を合成する断面形状推定装置とを備えた自
動開先検査装置。
1. An optical device for irradiating a laser beam to a groove portion, an image pickup device for picking up an irradiation line image of the laser beam from the optical device, and a surface shape of the groove portion based on image pickup data of the image pickup device. A surface shape estimation device for estimating, an ultrasonic plate thickness gauge for measuring the plate thickness in the vicinity of the groove portion, and a surface shape obtained by the surface shape estimation device and the plate thickness obtained by the ultrasonic plate thickness gauge An automatic groove inspection device comprising: a cross-sectional shape estimating device that synthesizes cross-sectional shapes of a tip portion.
JP28585892A 1992-10-23 1992-10-23 Automatic groove inspection device Expired - Fee Related JP2630717B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28585892A JP2630717B2 (en) 1992-10-23 1992-10-23 Automatic groove inspection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28585892A JP2630717B2 (en) 1992-10-23 1992-10-23 Automatic groove inspection device

Publications (2)

Publication Number Publication Date
JPH06137853A true JPH06137853A (en) 1994-05-20
JP2630717B2 JP2630717B2 (en) 1997-07-16

Family

ID=17696968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28585892A Expired - Fee Related JP2630717B2 (en) 1992-10-23 1992-10-23 Automatic groove inspection device

Country Status (1)

Country Link
JP (1) JP2630717B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010112578A (en) * 2000-06-09 2001-12-20 이구택 An apparatus for automatically checking join part of strip
JP2005106824A (en) * 2003-09-30 2005-04-21 General Electric Co <Ge> Method and system for reconstructing internal feature
EP2123389A1 (en) * 2007-02-13 2009-11-25 JFE Steel Corporation Seam-welded steel pipe manufacturing method and its manufacturing apparatus
WO2011118783A1 (en) * 2010-03-26 2011-09-29 住友金属工業株式会社 Method and apparatus for manufacturing uoe steel pipe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010112578A (en) * 2000-06-09 2001-12-20 이구택 An apparatus for automatically checking join part of strip
JP2005106824A (en) * 2003-09-30 2005-04-21 General Electric Co <Ge> Method and system for reconstructing internal feature
EP2123389A1 (en) * 2007-02-13 2009-11-25 JFE Steel Corporation Seam-welded steel pipe manufacturing method and its manufacturing apparatus
EP2123389A4 (en) * 2007-02-13 2015-04-08 Jfe Steel Corp Seam-welded steel pipe manufacturing method and its manufacturing apparatus
US9109884B2 (en) 2007-02-13 2015-08-18 Jfe Steel Corporation Method and equipment for manufacturing electric resistance welded steel pipe
WO2011118783A1 (en) * 2010-03-26 2011-09-29 住友金属工業株式会社 Method and apparatus for manufacturing uoe steel pipe
JP4883429B2 (en) * 2010-03-26 2012-02-22 住友金属工業株式会社 UOE steel pipe manufacturing method and manufacturing apparatus
CN102821886A (en) * 2010-03-26 2012-12-12 住友金属工业株式会社 Method and apparatus for manufacturing uoe steel pipe
CN102821886B (en) * 2010-03-26 2015-06-24 新日铁住金株式会社 Method and apparatus for manufacturing uoe steel pipe

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