JPH04187349A - Instrument for measuring distribution of coating film thickness if twin belt caster - Google Patents
Instrument for measuring distribution of coating film thickness if twin belt casterInfo
- Publication number
- JPH04187349A JPH04187349A JP31280390A JP31280390A JPH04187349A JP H04187349 A JPH04187349 A JP H04187349A JP 31280390 A JP31280390 A JP 31280390A JP 31280390 A JP31280390 A JP 31280390A JP H04187349 A JPH04187349 A JP H04187349A
- Authority
- JP
- Japan
- Prior art keywords
- film thickness
- coating
- coating film
- distribution
- casting belt
- 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
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 238000000576 coating method Methods 0.000 title claims abstract description 39
- 238000009826 distribution Methods 0.000 title claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 17
- 238000009749 continuous casting Methods 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、双ベルト方式の連続鋳造機の鋳造ベルトの表
面に施される塗膜の膜厚およびその分布を測定するコー
ティング膜厚分布測定装置に関する。Detailed Description of the Invention [Industrial Application Field] The present invention is a coating film thickness distribution measurement method for measuring the thickness and distribution of a coating film applied to the surface of a casting belt of a twin-belt type continuous casting machine. Regarding equipment.
双ベルト方式の連続鋳造機においては、金属製の鋳造ベ
ルトに溶融金属の熱が直接伝達されないように、鋳造ベ
ルト上にはジルコニア（２ｒＯ□）等の粉末による塗膜
が施される。この塗膜はスラリー状にしたコーティング
材を移動中の鋳造ベルトの表面に吹き付け、加熱乾燥し
て形成される。この場合に、吹き付は圧力が不均一にな
る等の原因により塗膜の膜厚分布が不均一になると、鋳
片の温度分布が不均一になり、板ワレ、キズの原因とな
り、極端な場合には鋳片のブレークアウトが発生する。In a twin-belt type continuous casting machine, a coating film of powder such as zirconia (2rO□) is applied to the casting belt so that the heat of the molten metal is not directly transferred to the metal casting belt. This coating film is formed by spraying a coating material in the form of a slurry onto the surface of a moving casting belt and drying it by heating. In this case, if the thickness distribution of the coating film becomes uneven due to uneven pressure or other causes during spraying, the temperature distribution of the slab will become uneven, causing plate cracks and scratches, resulting in extreme In some cases, slab breakout occurs.
したがって双ベルト方式の連続鋳造機にお −い
ては鋳造ベルト上の塗膜の膜厚分布を把握し、適確に対
応することが重要である。Therefore, in a twin-belt continuous casting machine, it is important to understand the thickness distribution of the coating film on the casting belt and take appropriate measures.
この膜厚分布の測定にあたって、従来では操業を停止し
て接触式膜厚計により測定を行なっていた。Conventionally, the film thickness distribution was measured using a contact type film thickness meter after the operation was stopped.
、〔発明が解決しようとする課題〕
従来の、操業を停止して測定する方式では、操業中の膜
厚分布の変動に充分対応することができず、鋳片の品質
悪化およびブレークアウトの発生を未然に防止すること
ができなかった。, [Problem to be solved by the invention] The conventional method of measuring after stopping operation cannot adequately respond to changes in film thickness distribution during operation, resulting in deterioration of slab quality and occurrence of breakouts. could not be prevented.
したがって本発明の目的は、双ベルト連続鋳造機におい
てオンライン非接触でコーティング膜厚およびその分布
を測定することの可能なコーティング膜厚分布測定装置
を提供することにある。Therefore, an object of the present invention is to provide a coating film thickness distribution measuring device that can measure coating film thickness and its distribution online and non-contact in a twin-belt continuous casting machine.
前述の目的を達成する本発明の双ベルト連続鋳造機のコ
ーティング膜厚分布測定装置は、稼動中の双ベルト連続
鋳造機の鋳造ベルト上に施された塗膜の膜厚およびその
分布を連続的に測定するコーティング膜厚測定装置であ
って、塗膜を施され加熱乾燥された鋳造ベルトの表面を
照明する光源と、該光源により照明される鋳造ベルト表
面を撮像する撮像手段と、該撮像手段が形成した画像の
画素の強度にもとづき塗膜の膜厚およびその分布を測定
する膜厚測定手段とを具備することを特徴とするもので
ある。The coating film thickness distribution measuring device for a twin-belt continuous casting machine of the present invention, which achieves the above-mentioned object, continuously measures the film thickness and its distribution of the coating film applied on the casting belt of the twin-belt continuous casting machine during operation. A coating film thickness measuring device for measuring coating film thickness, comprising: a light source for illuminating the surface of a casting belt that has been coated and heated and dried; an imaging means for imaging the surface of the casting belt illuminated by the light source; and the imaging means. The present invention is characterized by comprising a film thickness measuring means for measuring the film thickness of the coating film and its distribution based on the intensity of the pixels of the image formed by the method.
コーティング膜厚が厚い部分では光が乱反射されるため
、その部分は光沢が無く、逆に、コーティング膜厚が薄
いかもしくは無い部分は光の反射率が大である。したが
って、コーティングが施された鋳造ベルト表面による反
射光の強度は膜厚に対応することとなる。In areas where the coating film is thick, light is diffusely reflected, so there is no gloss in those areas, and conversely, areas where the coating film is thin or absent have a high reflectance of light. Therefore, the intensity of light reflected by the surface of the coated casting belt corresponds to the film thickness.
第１図は本発明の一実施例を表わす図である。 FIG. 1 is a diagram showing one embodiment of the present invention.
上部ロール２４を含む複数のロールの回転により送られ
る鋳造ベルト１０の表面にはコーティングノズル２０か
らスラリー状のコーティング材が吹き付けられ、ベルト
ヒータ１８による電磁加熱で加熱乾燥され、鋳型２２の
側壁の一部となる。A coating material in the form of a slurry is sprayed from a coating nozzle 20 onto the surface of the casting belt 10 that is fed by the rotation of a plurality of rolls including the upper roll 24 , and is heated and dried by electromagnetic heating by the belt heater 18 . Becomes a department.
蛍光灯等の棒状光源１２が上部ロール２４の上方に配置
されており、加熱乾燥後の鋳造ベルト１０の表面を照明
する。ＣＣＤカメラ１４は、棒状光源１２からの光が鋳
造ベルト１０上で反射された反射光を受光する位胃に設
けられている。したがって、ＣＣＤカメラ１４で形成さ
れる画像信号の各画素の強度は、コーティング膜厚が薄
くなる程、大となり、コーティング膜厚が厚くなると乱
反射が増加して反射光の強度は小となる
膜厚分布測定表示装置１６は各画素の強度のうち、鋳造
ベルト１０の送り方向に直角な直線上の画素の強度を膜
厚およびその分布を表わすものとして時々刻々表示出力
する。或いは、画素の強度と膜厚との関係を予め測定に
より求めて記憶しておき、その関係にもとづいて画素の
強度を膜厚の値に換算し、換算した値を表示出力する構
成とすることもできる。A rod-shaped light source 12 such as a fluorescent lamp is arranged above the upper roll 24 and illuminates the surface of the casting belt 10 after being heated and dried. The CCD camera 14 is installed at a position where it receives the reflected light from the rod-shaped light source 12 reflected on the casting belt 10. Therefore, the intensity of each pixel of the image signal formed by the CCD camera 14 increases as the coating thickness decreases, and as the coating thickness increases, diffuse reflection increases and the intensity of reflected light decreases. The distribution measurement display device 16 momentarily displays and outputs the intensity of pixels on a straight line perpendicular to the feeding direction of the casting belt 10 out of the intensity of each pixel as representing the film thickness and its distribution. Alternatively, the structure may be such that the relationship between pixel intensity and film thickness is determined in advance by measurement and stored, the pixel intensity is converted to a film thickness value based on that relationship, and the converted value is displayed and output. You can also do it.
以上に述べてきたように本発明によれば、操業中にもオ
ンラインで常時膜厚分布を監視することが可能となり、
コーティング不良によるブレークアウトの発生を未然に
防止することができ、また、膜厚が均一となるように複
数個のコーティングノズルの圧力を制御することにより
、コーティングむらに起因する板ワレ、シワ、キズの発
生を防止することができる。As described above, according to the present invention, it is possible to constantly monitor film thickness distribution online even during operation.
Breakouts caused by coating defects can be prevented, and by controlling the pressure of multiple coating nozzles to ensure uniform coating thickness, board cracks, wrinkles, and scratches caused by uneven coating can be prevented. can be prevented from occurring.
第１図は本発明の一実施例を表わす図である。 図において、 １０・・・鋳造ベルト、 １２・・・棒状光源、 １４・・・ＣＣＤカメラ、 １８・・・ベルトヒータ、 ２０・・・コーティングノズル ２２・・・鋳型、 ２４・・・上部ロール。 FIG. 1 is a diagram showing one embodiment of the present invention. In the figure, 10... Casting belt, 12...rod-shaped light source, 14...CCD camera, 18...belt heater, 20...Coating nozzle 22...Mold, 24...Top roll.
Claims (1)
上に施された塗膜の膜厚およびその分布を連続的に測定
するコーティング膜厚分布測定装置であって、 塗膜を施され加熱乾燥された鋳造ベルト（１０）の表面
を照明する光源（１２）と、 該光源（１２）により照明される鋳造ベルト表面を撮像
する撮像手段（１４）と、 該撮像手段（１４）が形成した画像の画素の強度にもと
づき塗膜の膜厚およびその分布を測定する膜厚測定手段
（１６）とを具備することを特徴とするコーティング膜
厚測定装置。[Claims] 1. Casting belt (10) of a twin-belt continuous casting machine in operation
A coating film thickness distribution measuring device that continuously measures the film thickness and its distribution of a coating film applied thereon, comprising a light source ( 12), an imaging means (14) for taking an image of the casting belt surface illuminated by the light source (12), and determining the film thickness of the coating film and its distribution based on the intensity of the pixels of the image formed by the imaging means (14). A coating film thickness measuring device comprising a film thickness measuring means (16) for measuring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31280390A JPH04187349A (en) | 1990-11-20 | 1990-11-20 | Instrument for measuring distribution of coating film thickness if twin belt caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31280390A JPH04187349A (en) | 1990-11-20 | 1990-11-20 | Instrument for measuring distribution of coating film thickness if twin belt caster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04187349A true JPH04187349A (en) | 1992-07-06 |
Family
ID=18033597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31280390A Pending JPH04187349A (en) | 1990-11-20 | 1990-11-20 | Instrument for measuring distribution of coating film thickness if twin belt caster |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04187349A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8312917B2 (en) | 2004-12-13 | 2012-11-20 | Nucor Corporation | Method and apparatus for controlling the formation of crocodile skin surface roughness on thin cast strip |
| WO2020215820A1 (en) * | 2019-04-23 | 2020-10-29 | 东莞市安达自动化设备有限公司 | Multifunctional automatic detection device for coating quality of pcb |
-
1990
- 1990-11-20 JP JP31280390A patent/JPH04187349A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8312917B2 (en) | 2004-12-13 | 2012-11-20 | Nucor Corporation | Method and apparatus for controlling the formation of crocodile skin surface roughness on thin cast strip |
| WO2020215820A1 (en) * | 2019-04-23 | 2020-10-29 | 东莞市安达自动化设备有限公司 | Multifunctional automatic detection device for coating quality of pcb |
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