JP2005164511A - Surface flaw inspection method of billet - Google Patents

Surface flaw inspection method of billet Download PDF

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JP2005164511A
JP2005164511A JP2003406716A JP2003406716A JP2005164511A JP 2005164511 A JP2005164511 A JP 2005164511A JP 2003406716 A JP2003406716 A JP 2003406716A JP 2003406716 A JP2003406716 A JP 2003406716A JP 2005164511 A JP2005164511 A JP 2005164511A
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inspection
flaw
automatic
map
wrinkle
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JP4189307B2 (en
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Meikai Nakamura
明海 中村
Taira Ono
平 小野
Tsutomu Awazu
勉 粟津
Tetsuro Hashiguchi
哲朗 橋口
Tetsuya Hayashi
徹也 林
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Nippon Steel Corp
新日本製鐵株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for performing reinspection efficiently with high accuracy, concerning a method for performing automatic inspection, then taking care, and thereafter performing reinspection by visual inspection by a magnetic particle inspection method. <P>SOLUTION: This surface flaw inspection method of a billet has a characteristic wherein, when performing the visual inspection by the magnetic particle inspection method after a care process for taking care of a flaw detected by the automatic surface flaw inspection after performing the automatic surface flaw inspection on the billet surface, a flaw map for displaying schematically the flaw position before care is taken by flaw information of the billet which is a visual inspection object taken by the automatic surface flaw inspection is displayed in a visual inspection place, and an inspector performs the visual inspection of the billet by the magnetic particle inspection method on reference to the flaw map. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、鋼片(分塊圧延後の鋼片の他、連続鋳造した鋳片も含む。以下、同じ。)の表面疵検査方法に関わり、より詳しくは、自動検査し、当該疵を手入れした後の磁粉探傷法による目視検査を高精度、且つ効率的に実施するための鋼片の表面疵検査方法に関するものである。   The present invention relates to a surface flaw inspection method for steel slabs (including slabs that have been continuously cast in addition to steel slabs after partial rolling. The same shall apply hereinafter), and more specifically, automatic inspection and maintenance of the flaws. The present invention relates to a method for inspecting the surface flaw of a steel slab in order to carry out a visual inspection by a magnetic particle flaw detection method with high accuracy and efficiency.
鋼片表面疵の検査・手入れは、最終製品の表面品質の良否に大きく影響するため高精度、且つ効率的に行う必要がある。特許文献1には、自動検査後、手入れを行い、その後、磁粉探傷法による目視検査により再検査する方法が記載されている。自動検査方法としては、例えば特許文献2に磁粉探傷法における自動検査方法が記載されている。このように、鋼片の表面疵検査を高精度、且つ効率的に行うために、自動検査し手入れした後に再検査する方法など、自動検査の精度向上の方策が提案されている。   The inspection and care of the surface defect of the steel slab greatly affects the quality of the surface quality of the final product, so it is necessary to perform it with high accuracy and efficiency. Patent Document 1 describes a method in which care is performed after automatic inspection, and then re-inspection is performed by visual inspection using a magnetic particle inspection method. As an automatic inspection method, for example, Patent Document 2 describes an automatic inspection method in a magnetic particle inspection method. Thus, in order to perform the surface flaw inspection of steel slabs with high accuracy and efficiency, measures for improving the accuracy of automatic inspection have been proposed, such as a method of performing automatic inspection and re-inspection after care.
自動検査は、鋼片の疵の大きさ、種類、及び形態等が多種多様であることから検査精度は必ずしも万全ではなく、また、手入れ残しの可能性も有ることから、自動検査後、手入れを行い、その後、磁粉探傷法による目視検査により再検査する方法を採用している場合が多く、この方法における再検査を高精度、且つ効率的に行うことが要求されている。
特開2003−136135号公報 特許第3440569号公報
In automatic inspection, the accuracy, inspection accuracy is not always perfect because of the variety of sizes, types, and forms of slabs, and there is a possibility of leaving care. In many cases, a method of performing a re-inspection by visual inspection using a magnetic particle inspection method is employed, and it is required to perform the re-inspection in this method with high accuracy and efficiency.
JP 2003-136135 A Japanese Patent No. 3440569
本発明は、自動検査後、手入れを行い、その後、磁粉探傷法による目視検査により再検査する方法において、前記再検査を高精度、且つ効率的に行う方法を提供することを課題とするものである。更には、得られた鋼片表面品質情報を必要に応じて他の製造工程や品質管理工程にも表示して該情報の共有化を図る方法を提供することを目的とする。   An object of the present invention is to provide a method for performing the re-examination with high accuracy and efficiency in a method of performing a maintenance after an automatic inspection and then performing a re-inspection by visual inspection using a magnetic particle inspection method. is there. It is another object of the present invention to provide a method for sharing the information by displaying the obtained billet surface quality information in other manufacturing processes and quality control processes as necessary.
本発明者らは、上記自動検査後の再検査を高精度、且つ効率的に行うために、自動表面疵検査情報を有効に活用することにより、本発明を完成した。即ち、本発明の要旨とするところは以下のとおりである。
(1)鋼片表面の自動表面疵検査を行った後、この自動表面疵検査により探傷した疵を手入れする手入れ工程の後に、磁粉探傷法による目視検査を行うに当たり、前記自動表面疵検査において取り込んだ疵情報により目視検査対象当該鋼片の手入れ前の疵位置を図式的に表示する疵マップを目視検査工程にて表示し、検査者が、該疵マップを参照して、磁粉探傷法による当該鋼片の目視検査を行うことを特徴とする鋼片の表面疵検査方法。
(2)前記疵マップは、鋼片の全表面を一つの画面で表示することを特徴とする(1)の鋼片の表面疵検査方法。
(3)検査者が前記疵マップで表示された疵の部分を指定することにより、当該疵部分の、前記自動表面疵検査において取り込んだ原画像を表示することを特徴とする(1)または(2)の鋼片の表面疵検査方法。
(4)前記目視検査工程にて、前記疵マップ、原画像の他に、過去の自動表面疵検査情報を表示することを特徴とする(1)乃至(3)のいずれかに記載の鋼片の表面疵検査方法。
(5)前記の疵マップ、原画像および過去の自動表面疵検査情報のうちの少なくとも一つは、他の製造工程、或いは管理工程においても表示可能としたことを特徴とする(4)のいずれかに記載の鋼片の表面疵検査方法。
The present inventors have completed the present invention by effectively utilizing automatic surface flaw inspection information in order to perform the re-inspection after the automatic inspection with high accuracy and efficiency. That is, the gist of the present invention is as follows.
(1) After performing the automatic surface flaw inspection on the surface of the steel slab, after the care process of cleaning the flaws detected by this automatic surface flaw inspection, the visual surface inspection by the magnetic particle flaw detection method is taken in the automatic surface flaw inspection. The hail map that graphically displays the hail position before cleaning of the steel piece to be visually inspected according to the hail information is displayed in the visual inspection process, and the inspector refers to the hail map and performs the magnetic particle inspection method. A method for inspecting a surface flaw of a steel piece, characterized by performing a visual inspection of the steel piece.
(2) The method for inspecting a surface flaw of a steel piece according to (1), wherein the wrinkle map displays the entire surface of the steel piece on one screen.
(3) When the inspector designates the portion of the eyelid displayed on the eyelid map, the original image captured in the automatic surface eyelid inspection of the eyelid portion is displayed (1) or ( Method 2) surface flaw inspection method for steel pieces.
(4) In the visual inspection step, past automatic surface wrinkle inspection information is displayed in addition to the wrinkle map and the original image. The steel slab according to any one of (1) to (3) Surface wrinkle inspection method.
(5) At least one of the wrinkle map, the original image, and the past automatic surface wrinkle inspection information can be displayed in another manufacturing process or a management process. A method for inspecting surface flaws of steel pieces according to crab.
本発明方法によると、一次自動検査での疵情報を二次目視検査で現品と対応して表示させることにより、二次検査での検査精度を向上させ疵見逃しを防止することができると共に、疵大きさや疵形態の観察により疵発生原因の迅速解明に結び付けることが可能となり、品質向上、生産能率の向上において有益である。また、表面疵検査装置及び表面疵取り装置の動作状態の異常把握も容易となり、品質検査技術レベルの向上にも大きく貢献するものである。   According to the method of the present invention, by displaying the wrinkle information in the primary automatic inspection in correspondence with the actual product in the secondary visual inspection, it is possible to improve the inspection accuracy in the secondary inspection and prevent oversight, and Observing the size and shape of the cocoon makes it possible to quickly identify the cause of cocoon generation, which is beneficial in improving quality and improving production efficiency. In addition, it becomes easy to grasp the abnormality of the operation state of the surface defect inspection device and the surface defect removal device, and greatly contributes to the improvement of the quality inspection technology level.
以下、本発明の好適な実施形態について説明する。
一次の自動検査後に実施される、鋼片の磁粉探傷法による目視検査は、通常、鋼片に蛍光磁粉液を散布し、磁化して疵部に形成される磁粉模様を紫外線照射下で検査者が目視検査して疵部にマーキングを施すものである。磁粉模様は、鋼片に磁化すると表面疵部に生じる漏洩磁束により蛍光磁粉が疵部に集積して形成され、表面疵を磁粉模様として出現させるものであり、目視検査は、この磁粉模様に紫外線を照射して発光する蛍光模様を肉眼で観察するものである。この目視検査においては、表面肌や疵の形態によっては、蛍光模様の輝度が低かったり、輪郭がぼやけていたり、或いは蛍光面積が小さい等の、疵部が明瞭に出現しない場合に検査者が疵を見逃す可能性を有している他、健全部に余分な磁粉が付着していた場合は過剰に疵として誤認識する可能性を有しており、検査者の熟練を要するものである。
Hereinafter, preferred embodiments of the present invention will be described.
The visual inspection by the magnetic particle flaw detection method for the steel piece, which is performed after the first automatic inspection, is usually performed by spraying a fluorescent magnetic powder liquid on the steel piece and magnetizing the magnetic powder pattern formed on the buttocks under ultraviolet irradiation. Are visually inspected to mark the collar. The magnetic powder pattern is formed by collecting fluorescent magnetic powder on the heel part due to leakage magnetic flux generated on the surface ridge when magnetized to the steel slab, and the surface defect appears as a magnetic powder pattern. The fluorescent pattern that emits light when irradiated with the light is observed with the naked eye. In this visual inspection, depending on the form of the surface skin and wrinkles, the inspector will not hesitate when the heel portion does not appear clearly, such as the brightness of the fluorescent pattern is low, the outline is blurred, or the fluorescent area is small. In addition, there is a possibility of overcognizing as excessive soot when excess magnetic powder adheres to the healthy part, and the skill of the inspector is required.
本発明では、上記目視検査に当たり、前工程の手入れ前鋼片の自動表面疵検査において取り込んだ目視検査対象当該鋼片の手入れ前の疵情報により疵位置を図式的に表示する疵マップを目視検査場(上記の蛍光模様を肉眼で観察する場)に表示し、検査者が該疵マップを参照して、当該鋼片の目視検査を行うことにより、鋼片表面を重点的、且つ入念に観察することができる。即ち、前工程の手入れ前鋼片の自動表面疵検査により疵の多い範囲があった場合は、疵手入れ後でもその範囲に手入れ残しが在る可能性が有ることから、該範囲を重点的、且つ入念に観察することより、効率的に精度良く、疵を検査することができる。   In the present invention, in the visual inspection described above, visual inspection is performed on the map to graphically display the position of the defects based on the information on defects to be visually inspected before the maintenance of the steel slab to be visually inspected in the automatic surface defect inspection of the pre-care steel slab in the previous step. Display on the field (the field where the above fluorescent pattern is observed with the naked eye), and the inspector performs a visual inspection of the steel slab by referring to the map, so that the surface of the steel slab is carefully and carefully observed. can do. In other words, if there is a large range of wrinkles by automatic surface wrinkle inspection of the pre-cleaned steel slab in the previous process, there is a possibility that there is a remaining care in the range even after the wrinkle care, so this range is emphasized. Further, by carefully observing, it is possible to inspect the wrinkles efficiently and accurately.
図1は、本発明を実施するための表面疵検査設備を構成する各装置の関連を説明するブック概念図である。
図示するように、鋼片(例えば、角ビレット)の一次検査場の自動表面疵検査装置1では、鋼片表面状態を検出して画像処理やデータ処理を加えて、原画像と鋼片の面別の疵位置を示す疵座標の疵情報として把握し、該疵情報は格納装置3へ出力されて取り込まれる。格納装置3に取り込まれた疵情報は、トラッキングシステム4により当該鋼片が二次検査を行う目視検査場に搬送されたときに、疵マップ6として疵表示装置5により表示される。該疵表示装置5では、適宜疵マップ6と原画像7との切替が行われる。これら格納装置3とトラッキングシステム4は、プロセスコンピュータ2の内部構成の一部である。
FIG. 1 is a book conceptual diagram for explaining the relationship between devices constituting a surface defect inspection facility for carrying out the present invention.
As shown in the figure, the automatic surface flaw inspection apparatus 1 at the primary inspection site of a steel slab (for example, a square billet) detects the steel slab surface state and applies image processing and data processing to the original image and the surface of the steel slab. It is grasped as eyelid information of eyelid coordinates indicating another eyelid position, and the eyelid information is output to the storage device 3 and taken in. The hail information taken into the storage device 3 is displayed on the hail display device 5 as a hail map 6 when the steel piece is conveyed by the tracking system 4 to a visual inspection site where a secondary inspection is performed. In the haze display device 5, switching between the haze map 6 and the original image 7 is performed as appropriate. The storage device 3 and the tracking system 4 are part of the internal configuration of the process computer 2.
自動表面疵検査装置1は、例えば、上記のように磁粉探傷法により疵を磁粉模様として出現させ、目視検査の代わりにCCDカメラの撮像装置で蛍光模様を検出する装置が採用される。
原画像は、撮像装置により鋼片の全表面について取り込まれたものであり、その画素面積は撮像装置の分解能によって決まるが、CCDカメラの場合、0.2mm×0.2mm程度である。
鋼片の面別の疵位置を示す疵座標は、原画像に疵を判定するための前処理や同定処理のデータ処理を加えて、5mm×5mm内の疵有無を鋼片表面の基準点(鋼片隅頂点)からの二次元(X、Y)方向位置と紐付けたものである。
The automatic surface wrinkle inspection device 1 employs, for example, a device that causes wrinkles to appear as a magnetic powder pattern by the magnetic particle flaw detection method as described above, and detects a fluorescent pattern with an imaging device of a CCD camera instead of visual inspection.
The original image is captured on the entire surface of the steel piece by the imaging device, and the pixel area is determined by the resolution of the imaging device, but in the case of a CCD camera, it is about 0.2 mm × 0.2 mm.
The heel coordinates indicating the position of the heel on each side of the steel slab are obtained by adding pre-processing and identification processing data for determining the heel to the original image, and determining whether or not there is a heel within 5 mm × 5 mm. It is associated with a two-dimensional (X, Y) direction position from the steel piece corner apex.
図2は、本発明の疵マップを説明する概念図である。
疵マップ6は鋼片9の上記の面別の疵位置を示す疵座標を表示するものであり、鋼片の4つある面を展開して同時に500画素×500画素程度の1画面に表示しているものである。上記のとおり、疵有無判定は鋼片の実寸法で5mm×5mmメッシュで行っているが、鋼片の実寸法が断面160mm×160mm角、長さ10,000mm程度の場合、疵マップの鋼片長手方向の画素数は最低2,000画素が必要となる。このため500画素×500画素程度の1画面において疵の表示分解能と見易さを確保するため、特に長さの短い疵については適度に倍率を乗じ、疵長さを延長して表示し、そして鋼片の全体品質を一目で現品と対応できるように鋼片の全長且つ全周に渡り表示するものである。二次検査の目視検査者は表示結果から表面疵検査で得られた疵手入れ前の疵情報をつぶさに見ることができ、例えば、図2に示す表示からは1面、3面及び4面に疵が存在し、3面では密集した疵の存在が分かり、疵の多発面や密集部に注目し入念な検査を実施することができる。そして、手入前の疵情報と目視検査結果を対照することにより、検査装置や疵取り装置の異常状態の発見にも有効に活用することができる。即ち、一次検査で疵が多数検出しているにも係らず疵取りがなされていない場合は、疵取り装置の異常が考えられ、また残存疵が多数存在する場合は検査装置の異常が考えられるなどの設備監視も可能となる。
FIG. 2 is a conceptual diagram illustrating the bag map of the present invention.
The coffin map 6 displays coffin coordinates indicating the coffin position of the steel piece 9 for each surface described above, and the four surfaces of the steel piece are developed and simultaneously displayed on one screen of about 500 pixels × 500 pixels. It is what. As described above, the presence / absence determination of the wrinkle is performed with a 5 mm × 5 mm mesh in the actual size of the steel slab, but when the actual size of the steel slab is a cross section of 160 mm × 160 mm square and a length of about 10,000 mm, the length of the steel slab on the heel map The minimum number of pixels in the hand direction is 2,000 pixels. For this reason, in order to ensure the display resolution and visibility of wrinkles on one screen of about 500 pixels × 500 pixels, in particular for wrinkles that are short in length, multiply the magnification appropriately, display the length of the wrinkles, and The overall quality of the steel slab is displayed over the entire length of the steel slab so that it can correspond to the actual product at a glance. The visual inspector of the secondary inspection can see the wrinkle information before cleaning obtained from the surface wrinkle inspection from the display result. For example, from the display shown in FIG. The presence of dense folds can be seen on the three sides, and careful inspection can be carried out paying attention to the frequent occurrence and dense areas of folds. And by contrasting the wrinkle information before maintenance with the visual inspection result, it can be effectively used for finding an abnormal state of the inspection device or the wrinkle removal device. That is, if there is a lot of wrinkles detected in the primary inspection but no scraping has been made, it is possible that there is a malfunction in the scraping device, and if there are many residual wrinkles, there may be a malfunction in the inspection device. It is also possible to monitor the equipment.
図3は疵の原画像を表示する概念図を示したものである。疵表示装置5をタッチパネル方式とし、検査者が鋼片疵マップで表示された疵部分を指定することで表示画面を切替え、当該疵の原画像7を拡大して表示するものである。これにより、当該疵の大きさや形態を詳細に見ることが出来る。鋼種と原画像の疵形態によっては自動表面疵検査では疵と判定されない疵、或いは、上記目視検査で疵と観察された疵の周囲に潜り疵が有る鋼種の場合、原画像を参照することにより、目視検査者がマーキング範囲を拡大して疵見逃しを防止することができる。   FIG. 3 is a conceptual diagram for displaying the original image of the cocoon. The heel display device 5 is a touch panel system, and the inspector designates the heel portion displayed on the billet heel map, thereby switching the display screen and enlarging and displaying the original image 7 of the heel. Thereby, the size and form of the ridge can be seen in detail. Depending on the type of steel and the type of wrinkles of the original image, it is not possible to determine that it is a wrinkle in the automatic surface wrinkle inspection, or in the case of a steel type that has a dangling flaw around the wrinkles observed in the visual inspection, refer to the original image. The visual inspector can expand the marking range and prevent oversight.
図4、5は、格納装置3に蓄積されていた過去の自動表面疵検査情報を目視検査場に表示した概念図である。図4は鋼種S45Cについてチャージ番号順に疵面積率を棒グラフで表示したものであり、図5は鋼種S45Cの特定チャージについて鋼片番号順に疵面積率を棒グラフで表示したものである。
このように過去の自動表面疵検査情報を目視検査場に表示することにより、目視検査者が現在観察している鋼片の表面疵発生特性、傾向を認識することができ、疵観察における注意が喚起される。
以上の説明においては、角ビレットを例に記述したが、本発明は、丸ビレットに対しても適用可能である。丸ビレットの場合の疵マップは全周を展開した1面となる。
4 and 5 are conceptual diagrams in which past automatic surface flaw inspection information stored in the storage device 3 is displayed on the visual inspection place. FIG. 4 shows the bar area ratio as a bar graph in the order of the charge number for the steel type S45C, and FIG. 5 shows the bar area ratio as a bar graph in the order of the billet number for the specific charge of the steel type S45C.
By displaying past automatic surface flaw inspection information on the visual inspection site in this way, the surface flaw occurrence characteristics and trends of the steel slab that the visual inspector is currently observing can be recognized, and attention should be paid to flaw observation. Aroused.
In the above description, a square billet has been described as an example, but the present invention can also be applied to a round billet. In the case of a round billet, the cocoon map is a single surface developed all around.
更に、本発明では疵マップ、原画像、および過去の自動表面疵検査情報のうちの少なくとも一つを、例えば連続鋳造工程等の他の製造工程に、或いは品質管理部門等の管理工程に表示し得るようにしたことから、鋼片品質情報の共有化が可能となり、製造条件の適正化、製品振当ての適正化が図られる。   Furthermore, in the present invention, at least one of the wrinkle map, the original image, and the past automatic surface wrinkle inspection information is displayed in another manufacturing process such as a continuous casting process or in a management process such as a quality control department. As a result, it is possible to share billet quality information, and to optimize manufacturing conditions and product allocation.
なお、図1においては、格納装置3に複数の疵表示端末8を接続した例を示しているが、これによって疵表示装置5及び複数の疵表示端末8にて鋼片のチャージ番号と鋼片番号とを検索条件として入力することで、当該鋼片の疵情報と過去の自動表面疵検査情報を自動検索し表示することが可能となる。即ち、疵情報は全て格納装置3に取込まれていることから、該格納装置3をLAN回線に接続することで、所望の各工程での疵情報の検索表示による品質情報共有化が可能である。   FIG. 1 shows an example in which a plurality of fence display terminals 8 are connected to the storage device 3, so that the bill number and the billet of the billets are displayed on the fence display device 5 and the plurality of fence display terminals 8. By inputting the number as a search condition, it becomes possible to automatically search and display the wrinkle information of the steel piece and the past automatic surface flaw inspection information. That is, since all the bag information is taken in the storage device 3, it is possible to share quality information by searching and displaying the bag information in each desired process by connecting the storage device 3 to the LAN line. is there.
本発明を実施するための装置の連関を説明する概念図である。It is a conceptual diagram explaining the linkage of the apparatus for implementing this invention. 本発明の疵マップを説明する概念図である。It is a conceptual diagram explaining the bag map of this invention. 疵の原画像を表示する概念図を示したものである。The conceptual diagram which displays the original image of a cocoon is shown. チャージ番号順に疵面積率を棒グラフで表示したものである。The bar area ratio is displayed in a bar graph in order of charge number. 鋼片番号順に疵面積率を棒グラフで表示したものである。The bar area ratio is displayed as a bar graph in the order of billet numbers.
符号の説明Explanation of symbols
1 自動表面疵検査装置
2 プロセスコンピュータ
3 格納装置
4 トラッキングシステム
5 疵表示装置
6 疵マップ
7 原画像
8 疵表示端末
9 鋼片
DESCRIPTION OF SYMBOLS 1 Automatic surface flaw inspection apparatus 2 Process computer 3 Storage device 4 Tracking system 5 Haze display device 6 Hail map 7 Original image 8 Hail display terminal 9 Steel piece

Claims (5)

  1. 鋼片表面の自動表面疵検査を行った後、この自動表面疵検査により探傷した疵を手入れする手入れ工程の後に、磁粉探傷法による目視検査を行うに当たり、前記自動表面疵検査において取り込んだ目視検査対象当該鋼片の疵情報により手入れ前の疵位置を図式的に表示する疵マップを目視検査工程にて表示し、検査者が、該疵マップを参照して、磁粉探傷法による当該鋼片の目視検査を行なうことを特徴とする鋼片の表面疵検査方法。   After performing the automatic surface flaw inspection on the surface of the steel piece, and after the care process for cleaning the flaws detected by the automatic surface flaw inspection, the visual inspection taken in the automatic surface flaw inspection is performed when performing the visual inspection by the magnetic particle flaw detection method. A wrinkle map that graphically displays the wrinkle position before cleaning by the wrinkle information of the target billet is displayed in the visual inspection process, and the inspector refers to the wrinkle map to check the billet piece by magnetic particle inspection. A method for inspecting the surface flaw of a steel slab characterized by performing visual inspection.
  2. 前記疵マップは、鋼片の全表面を一つの画面で表示することを特徴とする請求項1の鋼片の表面疵検査方法。   2. The method for inspecting a surface slab of a steel slab according to claim 1, wherein the heel map displays the entire surface of the steel slab on a single screen.
  3. 検査者が前記疵マップで表示された疵の部分を指定することにより、当該疵部分の、前記自動表面疵検査において取り込んだ原画像を表示することを特徴とする請求項1または2記載の鋼片の表面疵検査方法。   3. The steel according to claim 1, wherein an inspector designates a portion of the ridge displayed on the heel map, thereby displaying an original image of the heel portion captured in the automatic surface heel inspection. A method for inspecting the surface of a piece.
  4. 前記目視検査工程にて、前記疵マップ、原画像の他に、過去の自動表面疵検査情報を表示することを特徴とする請求項1乃至3のいずれかに記載の鋼片の表面疵検査方法。   4. The method for inspecting a surface slab of a steel slab according to claim 1, wherein, in the visual inspection step, past automatic surface defect inspection information is displayed in addition to the defect map and the original image. .
  5. 前記の疵マップ、原画像、および過去の自動表面疵検査情報のうちの少なくとも一つは、他の製造工程、或いは管理工程においても表示可能としたことを特徴とする請求項4のいずれかに記載の鋼片の表面疵検査方法。   5. At least one of the wrinkle map, the original image, and past automatic surface wrinkle inspection information can be displayed in another manufacturing process or a management process. The method for inspecting the surface flaw of a steel piece as described.
JP2003406716A 2003-12-05 2003-12-05 Inspection method of surface flaws on billets Expired - Fee Related JP4189307B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006300678A (en) * 2005-04-19 2006-11-02 Bridgestone Corp Visual inspection method and visual inspection assisting device for product
KR101189518B1 (en) 2010-02-22 2012-10-10 주식회사 포스코 Apparatus for inspecting surfaces and method for inspecting surfaces using it
JP2015075451A (en) * 2013-10-11 2015-04-20 新日鐵住金株式会社 Inspection and repair support device for billet and inspection and repair method for billet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006300678A (en) * 2005-04-19 2006-11-02 Bridgestone Corp Visual inspection method and visual inspection assisting device for product
JP4680659B2 (en) * 2005-04-19 2011-05-11 株式会社ブリヂストン Product tire appearance inspection method and product tire appearance inspection auxiliary device
KR101189518B1 (en) 2010-02-22 2012-10-10 주식회사 포스코 Apparatus for inspecting surfaces and method for inspecting surfaces using it
JP2015075451A (en) * 2013-10-11 2015-04-20 新日鐵住金株式会社 Inspection and repair support device for billet and inspection and repair method for billet

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