JPS63236947A - Automatic flaw detector for roll surface - Google Patents
Automatic flaw detector for roll surfaceInfo
- Publication number
- JPS63236947A JPS63236947A JP62071201A JP7120187A JPS63236947A JP S63236947 A JPS63236947 A JP S63236947A JP 62071201 A JP62071201 A JP 62071201A JP 7120187 A JP7120187 A JP 7120187A JP S63236947 A JPS63236947 A JP S63236947A
- Authority
- JP
- Japan
- Prior art keywords
- flaw
- flaw detection
- rotation angle
- pulses
- automatic
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 230000000149 penetrating effect Effects 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 241001417527 Pempheridae Species 0.000 abstract 3
- 238000010408 sweeping Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/005—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 mounted on vehicles or designed to apply a liquid on a very large surface, e.g. on the road, on the surface of large containers
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 Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は圧延ロール等のロール表面の班を効率良く確実
に検出する探傷装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flaw detection device that efficiently and reliably detects spots on the surface of a roll such as a rolling roll.
（従来の技術）
ロール表面の疵を検出する一般的方法として浸透探傷試
験がある。これは、通常次のように行われる。(Prior Art) A penetrant test is a common method for detecting flaws on the surface of a roll. This is typically done as follows.
染料または螢光物質の入った浸透液をロール表面に塗布
し疵に浸透させた後、表面の浸透液を除去する０次に現
像液で浸透液を表面に吸い出し目視観察する。A penetrating solution containing a dye or fluorescent substance is applied to the roll surface and allowed to penetrate into the flaws, and then the penetrating solution is removed from the surface.The penetrating solution is sucked out to the surface using a developing solution and visually observed.
このような浸透探傷検査を自動化した装置も提案されて
いる（特開昭５７−２４８４７号、特開昭６０−９１２
４４号）、シかし全表面を浸透探傷検査することは浸透
液の無駄が多い上、時間のロスも大きい。Devices that automate such penetrant testing have also been proposed (Japanese Patent Laid-Open Nos. 57-24847 and 60-912).
No. 44), penetrant inspection of the entire surface of the stain not only wastes a lot of penetrant, but also causes a large loss of time.
ロール表面の疵検出装置としては他に渦流式探傷装置が
ある。これは電磁誘導によって引き起こされる渦電流を
利用して疵を検出するものであり、浸透探傷に比べ能率
的であるが、Ｓ／Ｎ比の問題もあり信頼性が低い、また
、渦流式探傷装置で疵を検出した位置を速乾性ペイント
等でマークする装置も提案されている （特開昭５０−
１１８７８２号）が、この装置でも十分な信頼性を得る
ためには検出閾値レベルを低く設定し、マークされた個
所を浸透探傷試験で確認する必要がある。渦流式探傷装
置では、また、２次元的あるいは３次元的に複雑、微妙
な疵種の判定は困難である。There is also an eddy current flaw detection device as a device for detecting flaws on the roll surface. This detects flaws by using eddy currents caused by electromagnetic induction, and although it is more efficient than penetrant testing, it is also less reliable due to issues with the S/N ratio. A device has also been proposed that marks the position where a flaw is detected with quick-drying paint (Japanese Patent Application Laid-open No. 1973-
118782), but in order to obtain sufficient reliability with this device, it is necessary to set the detection threshold level low and confirm the marked locations by penetrant testing. In addition, it is difficult for eddy current type flaw detection equipment to determine complex and delicate types of flaws in two or three dimensions.
（発明が解決しようとする問題点）
従って本発明の目的は、能率的かつ経済的で、しかも信
頼性が高いロール表面の探傷装置を提供する事で、ある
、特に従来の渦流式探傷装置の高能率性と浸透探傷検査
の高倍転性を併せ持ったロール表面の探傷装置を提供す
ることを目的とする。(Problems to be Solved by the Invention) Accordingly, an object of the present invention is to provide an efficient, economical, and highly reliable roll surface flaw detection device, and in particular, to provide a roll surface flaw detection device that is efficient, economical, and highly reliable. The purpose of the present invention is to provide a roll surface flaw detection device that has both high efficiency and high multiplicity of penetrant testing.
（問題点を解決するための手段）
かくして本発明の要旨とするところは、相対的に回転す
るロール表面上の疵を検出する装置であって、
ロール表面の疵を自動的に検出して圧検出信号を発生す
る自動疵検出器と、
浸透液スプレーノズルと、
浸透液拭取り器と、
自動疵検出器の疵検比プローブ、浸透液スプレーノズル
、および浸透液拭取り器を、ロール表面の探傷経路に沿
って所定回転角度だけそれぞれ分離して支持する支持部
材と、
ロールの相対的回転角を測定する回転角測定手段と、
自動疵検出器の発生する圧検出信号に応答し、回転角測
定手段により測定されたロールの相対的回転角が各所定
回転角度に等しくなった時点において前記スプレーノズ
ルおよび拭取り器を駆動する駆動信号を発生する制御演
算手段と、を備えるロール表面自動探傷装置である。(Means for Solving the Problems) Thus, the gist of the present invention is to provide a device for detecting flaws on the surfaces of relatively rotating rolls, which automatically detects flaws on the roll surfaces and applies pressure. An automatic flaw detector that generates a detection signal, a penetrating liquid spray nozzle, a penetrating liquid wiping device, a flaw detection probe of the automatic flaw detector, a penetrating liquid spray nozzle, and a penetrating liquid wiping device are installed on the roll surface. A support member that is separated and supported by a predetermined rotation angle along the flaw detection path, a rotation angle measuring means that measures the relative rotation angle of the roll, and a rotation angle measuring means that measures the rotation angle in response to a pressure detection signal generated by an automatic flaw detector. A roll surface automatic flaw detection device comprising: control calculation means for generating a drive signal for driving the spray nozzle and the wiper when the relative rotation angle of the roll measured by the measurement means becomes equal to each predetermined rotation angle. It is.
自動疵検出器としては、渦流式探傷装置を用いる事が好
ましい、またロールの相対的回転角の測定は、回転速度
に比例する頻度でパルスを発生するパルス発生器と、パ
ルス数をカウントするカウンタとによることが好ましい
。As an automatic flaw detector, it is preferable to use an eddy current flaw detector, and to measure the relative rotation angle of the roll, a pulse generator that generates pulses at a frequency proportional to the rotation speed and a counter that counts the number of pulses are used. It is preferable that it depends on.
（作用）
ロールは装置に対し相対的に回転している。自動疵検出
器のプローブ、スプレーノズル、拭取り器は、このロー
ルに関しそれぞれの所定角度で支持される。制御演算装
置は、自動疵検出器による疵検出抜、ロールがそれぞれ
の所定回転角度だけ相対的に回転した各時点でスプレー
装置および拭取り器を駆動させる。(Operation) The roll is rotating relative to the device. The automatic flaw detector probe, spray nozzle, and wiper are supported at their respective predetermined angles with respect to this roll. The control arithmetic unit drives the spray device and the wiper each time the automatic flaw detector detects flaws and the rolls rotate relative to each other by respective predetermined rotation angles.
従って自動疵検出器により疵が検出された個所にはスプ
レーノズルにより浸透液が正確に噴射され、疵に浸透す
る。またロール表面の浸透液は拭取り器により拭取られ
る。Therefore, the penetrating liquid is accurately sprayed by the spray nozzle to the location where a flaw is detected by the automatic flaw detector, and penetrates into the flaw. Further, the penetrating liquid on the roll surface is wiped off with a wiper.
ロールが乾燥した後、ロール全表面に現像液を塗布しロ
ール表面を目視観察することによりロール表面の疵を検
出する。After the roll is dried, a developer is applied to the entire surface of the roll and the roll surface is visually observed to detect flaws on the roll surface.
（実施例）
次に添付図面を参照しながら本発明の実施例について詳
しく説明する。(Example) Next, an example of the present invention will be described in detail with reference to the accompanying drawings.
表面疵が検出される圧延ロール１は、図において右回り
に回転している。パルス発生器２ａは、ロール１の回転
速度に比例する頻度でパルスを発生する（１回転Ｎパル
ス）、パルスカウンタ２はパルス発生器２ａの発生する
パルス数をカウントする。The rolling roll 1 on which surface defects are detected is rotating clockwise in the figure. The pulse generator 2a generates pulses at a frequency proportional to the rotation speed of the roll 1 (N pulses per rotation), and the pulse counter 2 counts the number of pulses generated by the pulse generator 2a.
自動疵検出器３の疵検比プローブ３ａ、および浸透液ス
プレーノズル４、拭取り器５は、支持部材６により各所
定回転角度だけ分離されて支持される。即ち、パルス発
生器２の発生パルス数で数えてプローブ・ノズル間がＮ
１パルス相当（Ｎ、／Ｎ回転）、プローブ・拭取り器間
がＮ２パルス相当（Ｎｔ／Ｎ回転）に支持される。The flaw detection probe 3a of the automatic flaw detector 3, the penetrating liquid spray nozzle 4, and the wiper 5 are supported by a support member 6 while being separated by a predetermined rotation angle. In other words, the distance between the probe and nozzle is N, counting the number of pulses generated by the pulse generator 2.
The support is equivalent to 1 pulse (N, /N rotations), and the distance between the probe and the wiper is supported equivalent to N2 pulses (Nt/N rotations).
支持部材６は駆動アーム（図示せず）により駆動される
。このアームは、部材６で支持された検出ヘッドをロー
ル１の円筒状表面端部に対向させるとともに徐々にロー
ル軸方向に移動させる。従って探傷経路は、回転するロ
ールの表面を螺旋状に移動して全表面を覆うことになる
。The support member 6 is driven by a drive arm (not shown). This arm causes the detection head supported by the member 6 to face the end of the cylindrical surface of the roll 1 and gradually moves it in the direction of the roll axis. Therefore, the flaw detection path moves in a spiral manner over the surface of the rotating roll, covering the entire surface.
自動疵検出器３としては、電磁誘導作用による渦電流を
利用する周知の渦流式探傷装置を用いることが好ましい
、スプレーノズル４はスプレー駆動装置７により駆動さ
れ、染料を含有するダイチェック浸透液を噴射する。拭
取りＨ５は拭取り器駆動装置８により駆動される。これ
らにはすべて常用のものを応用することができる。As the automatic flaw detector 3, it is preferable to use a well-known eddy current flaw detection device that utilizes eddy currents caused by electromagnetic induction.The spray nozzle 4 is driven by a spray drive device 7, and sprays a dye-containing die check penetrating liquid. Inject. The wiper H5 is driven by a wiper drive device 8. Commonly used materials can be used for all of these.
プローブ３ａにより疵が検出されると自動疵検重器３は
、疵検出信号を発生する。制御演算回路９は、疵検出信
号受信後、パルスカウンタ２でＮ、パルスをカウントア
ツプした時点で、スプレー噴射指令信号を発生する。ま
たこの回路９は、疵検出信号受信後、Ｎ２パルスをカウ
ントした時点で拭取り器下降指令信号を発生し、さらに
所定時間後、上昇指令信号を発生する。この結果、スプ
レーノズル４により噴射された浸透液は、検出された底
内に浸透し、その後、表面に残った部分は拭取り器５に
より拭取られる。When a flaw is detected by the probe 3a, the automatic flaw detector 3 generates a flaw detection signal. The control calculation circuit 9 generates a spray injection command signal when the pulse counter 2 counts up N pulses after receiving the flaw detection signal. Further, after receiving the flaw detection signal, this circuit 9 generates a wiping tool lowering command signal when counting N2 pulses, and further generates a rising command signal after a predetermined period of time. As a result, the penetrating liquid sprayed by the spray nozzle 4 penetrates into the detected bottom, and the portion remaining on the surface is then wiped off by the wiper 5.
なお、浸透液の乾燥には時間を要する。このため上述の
実施例においては、現像液の塗布装置は支持部材６に取
付られていない、従って現像液の塗布は検査者がロール
全面に行い、疵を確認する。Note that it takes time to dry the penetrating liquid. For this reason, in the above-described embodiment, the developer application device is not attached to the support member 6, and therefore the inspector applies the developer to the entire surface of the roll to check for flaws.
しかし必要に応じ、現像液塗布装置をも支持部材６に取
り付け、パルスカウンタ２および制御演算回路９により
疵検出位置にのみ現像液を塗布しても良い、このように
構成した実施例では、浸透探傷検査をすべて自動化する
こともできる。However, if necessary, the developer coating device may also be attached to the support member 6, and the pulse counter 2 and the control calculation circuit 9 may apply the developer only to the flaw detection position. It is also possible to automate all flaw detection inspections.
（発明の効果）
以上に述べたように本発明の装置によれば、渦流式探傷
装置（自動疵検重器）で疵が検出された個所にのみ自動
的に浸透液が噴射され、疵に浸透した後、拭き取られる
。従って浸透液の塗布工程が能率的かつ経済的になる。(Effects of the Invention) As described above, according to the device of the present invention, the penetrating liquid is automatically injected only to the location where a flaw is detected by the eddy current flaw detector (automatic flaw detector), and the penetrant liquid is automatically injected into the flaw. After soaking in, it is wiped off. Therefore, the process of applying the penetrant becomes efficient and economical.
また浸透探傷検査をロール全表面について行った場合と
同等の信顛性が確保できる。Furthermore, it is possible to ensure the same reliability as when penetrant testing is performed on the entire surface of the roll.
従って本発明の効果をＷｌｍすれば次のとおりである。Therefore, the effects of the present invention can be summarized as follows.
（１）目的とする疵の検出が短時間で１００％可能とな
る。(1) Targeted flaws can be detected 100% of the time in a short time.
（２）目視による微妙なキズ種判定が併用できる。(2) Can be used in conjunction with visual inspection to determine the type of scratches.
（３）浸透液は部分的にのみ塗布されるので、低コスト
で探傷が行える。(3) Since the penetrating liquid is applied only partially, flaw detection can be performed at low cost.
（４）以上の結果、疵見逃しによる圧延トラブルが撲滅
できる。(4) As a result of the above, rolling troubles caused by overlooked defects can be eliminated.
（５）過検出防止、正確な疵種の判定が可能となりオー
バー研削が防止できるのでロール原単位の向上が図れる
。(5) Over-detection can be prevented, accurate determination of the type of flaw can be made, and over-grinding can be prevented, so the roll consumption rate can be improved.
添付凹面は、本発明にかかるロール表面自動探傷装置の
ブロック図である。
１：圧延ロール
２：パルスカウンタ
３：自動疵検重器
４：浸透液スプレーノズル
５：浸透液拭取り器
６：支持部材
７：スプレー駆動装置
８：拭取り器駆動装置
９：制御演算回路The attached concave surface is a block diagram of an automatic roll surface flaw detection device according to the present invention. 1: Roll roll 2: Pulse counter 3: Automatic flaw detector 4: Penetrant spray nozzle 5: Penetrant wiper 6: Support member 7: Spray drive device 8: Wiper drive device 9: Control calculation circuit
Claims (1)
って、 ロール表面の疵を自動的に検出して疵検出信号を発生す
る自動疵検出器と、 浸透液スプレーノズルと、 浸透液拭取り器と、 自動疵検出器の疵検出プローブ、浸透液スプレーノズル
、および浸透液拭取り器を、ロール表面の探傷経路に沿
って所定回転角度だけそれぞれ分離して支持する支持部
材と、 ロールの相対的回転角を測定する回転角測定手段と、 自動疵検出器の発生する疵検出信号に応答し、回転角測
定手段により測定されたロールの相対的回転角が各所定
回転角度に等しくなった時点において前記スプレーノズ
ルおよび拭取り器を駆動する駆動信号を発生する制御演
算手段と、 を備えるロール表面自動探傷装置。[Claims] A device for detecting flaws on the surface of relatively rotating rolls, comprising: an automatic flaw detector that automatically detects flaws on the roll surface and generates a flaw detection signal; and a penetrating liquid spray. The nozzle, the penetrant wiper, the flaw detection probe of the automatic flaw detector, the penetrant spray nozzle, and the penetrant wiper are supported separately by a predetermined rotational angle along the flaw detection path on the roll surface. a support member; a rotation angle measuring means for measuring a relative rotation angle of the rolls; and a rotation angle measuring means for measuring a relative rotation angle of the rolls; and in response to a flaw detection signal generated by an automatic flaw detector, the relative rotation angles of the rolls measured by the rotation angle measuring means are set to respective predetermined values. An automatic roll surface flaw detection device comprising: control calculation means for generating a drive signal for driving the spray nozzle and the wiper when the rotation angle becomes equal to the rotation angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62071201A JPS63236947A (en) | 1987-03-25 | 1987-03-25 | Automatic flaw detector for roll surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62071201A JPS63236947A (en) | 1987-03-25 | 1987-03-25 | Automatic flaw detector for roll surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63236947A true JPS63236947A (en) | 1988-10-03 |
Family
ID=13453824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62071201A Pending JPS63236947A (en) | 1987-03-25 | 1987-03-25 | Automatic flaw detector for roll surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63236947A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02288600A (en) * | 1989-04-28 | 1990-11-28 | Hitachi Ltd | Information processing system |
| KR100514801B1 (en) * | 2002-12-05 | 2005-09-14 | 주식회사 포스코 | An apparatus for detecting the surface of a rolling roll |
| KR100825618B1 (en) * | 2001-12-22 | 2008-04-25 | 주식회사 포스코 | Polishing System of Roll For Rolling Facilities |
| JP2009090197A (en) * | 2007-10-05 | 2009-04-30 | Satake Corp | Belt-type optical sorter |
| CN117385575A (en) * | 2023-07-27 | 2024-01-12 | 青岛天一红旗纺机集团有限公司 | Automatic sizing device |
-
1987
- 1987-03-25 JP JP62071201A patent/JPS63236947A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02288600A (en) * | 1989-04-28 | 1990-11-28 | Hitachi Ltd | Information processing system |
| KR100825618B1 (en) * | 2001-12-22 | 2008-04-25 | 주식회사 포스코 | Polishing System of Roll For Rolling Facilities |
| KR100514801B1 (en) * | 2002-12-05 | 2005-09-14 | 주식회사 포스코 | An apparatus for detecting the surface of a rolling roll |
| JP2009090197A (en) * | 2007-10-05 | 2009-04-30 | Satake Corp | Belt-type optical sorter |
| CN117385575A (en) * | 2023-07-27 | 2024-01-12 | 青岛天一红旗纺机集团有限公司 | Automatic sizing device |
| CN117385575B (en) * | 2023-07-27 | 2024-04-19 | 青岛天一红旗纺机集团有限公司 | Automatic sizing device |
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