JP2915552B2 - Coating film thickness distribution measuring device for twin belt casting machine - Google Patents
Coating film thickness distribution measuring device for twin belt casting machineInfo
- Publication number
- JP2915552B2 JP2915552B2 JP31280290A JP31280290A JP2915552B2 JP 2915552 B2 JP2915552 B2 JP 2915552B2 JP 31280290 A JP31280290 A JP 31280290A JP 31280290 A JP31280290 A JP 31280290A JP 2915552 B2 JP2915552 B2 JP 2915552B2
- Authority
- JP
- Japan
- Prior art keywords
- film thickness
- coating film
- distribution
- belt
- measuring
- 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 - Fee Related
Links
- 239000011248 coating agent Substances 0.000 title claims description 34
- 238000000576 coating method Methods 0.000 title claims description 34
- 238000005266 casting Methods 0.000 title claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000009749 continuous casting Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
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 relates to a coating film thickness distribution measurement for measuring the film thickness and distribution of a coating film applied to the surface of a casting belt of a twin belt type continuous casting machine. Related to the device.
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（ZrO2）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、吹き付け圧力が不均一にな
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。
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。In a twin belt type continuous casting machine, a coating film of a powder such as zirconia (ZrO 2 ) is applied on the casting belt so that the heat of the molten metal is not directly transmitted to the casting belt made of metal. This coating film is formed by spraying a slurry-like coating material onto the surface of a moving casting belt and drying by heating. In this case, if the film thickness distribution of the coating film becomes non-uniform due to reasons such as non-uniform spraying pressure, the temperature distribution of the slab becomes non-uniform, causing plate cracks and scratches, in extreme cases. Causes slab breakout.
Therefore, in a twin-belt type continuous casting machine, it is important to grasp the film thickness distribution of the coating film on the casting belt and to respond appropriately.
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。In the measurement of the film thickness distribution, conventionally, the operation was stopped and the measurement was performed using a contact-type film thickness meter.
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。The conventional method in which the operation is stopped and measured cannot sufficiently cope with the fluctuation of the film thickness distribution during the operation, and the deterioration of the quality of the slab and the occurrence of breakout cannot be prevented beforehand. .
したがって、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。Accordingly, an object of the present invention is to provide a coating film thickness distribution measuring device capable of measuring a coating film thickness and its distribution online without 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、稼働中の双ベルト連
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、塗膜を施された鋳造ベルトを加熱することによ
って塗膜を乾燥せしめる加熱手段と、該加熱手段により
加熱乾燥された鋳造ベルトの表面の温度およびその分布
を非接触で測定する温度測定手段と該温度測定手段が測
定した温度およびその分布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 of the twin belt continuous casting machine of the present invention which achieves the above-mentioned object continuously measures the film thickness and the distribution of the coating film applied on the casting belt of the operating twin belt continuous casting machine. A coating film thickness measuring apparatus for measuring the temperature of the surface of the casting belt heated and dried by the heating means for drying the coating film by heating the casting belt on which the coating film is applied, and the heating means for drying the coating film. A temperature measuring means for measuring the distribution in a non-contact manner, and a film thickness measuring means for measuring the thickness of the coating film and its distribution based on the temperature measured by the temperature measuring means and its distribution. is there.
加熱手段として、例えば、金属中に発生する渦電流に
より金属を加熱する電磁加熱方式を採用すれば、塗膜を
施した面からでも鋳造ベルトを直接加熱することができ
る。いずれの方式であっても鋳造ベルトを直接加熱して
塗膜を乾燥せしめる方式をとることにより、塗膜が施さ
れた鋳造ベルトの表面の温度は、塗膜の断熱効果によ
り、膜厚の分布に応じた温度分布を呈するようになる。As the heating means, for example, if an electromagnetic heating method of heating the metal by eddy current generated in the metal is employed, the casting belt can be directly heated even from the surface on which the coating is applied. In either method, the temperature of the surface of the cast belt on which the coating is applied is controlled by the method of drying the coating film by directly heating the casting belt. Temperature distribution according to the temperature.
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 an 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による電磁加熱で鋳造ベルト10を加熱することを通
して加熱乾燥され、鋳型22の側壁の一部となる。A slurry-like coating material is sprayed from a coating nozzle 20 on the surface of the casting belt 10 fed by rotation of a plurality of rolls including the upper roll 24, and is heated and dried by heating the casting belt 10 by electromagnetic heating by a belt heater 18. Then, it becomes a part of the side wall of the mold 22.
赤外線カメラ14はベルトヒータ18で加熱乾燥された鋳
造ベルト10の表面の温度およびその分布を非接触的に測
定すべく設けられる。ベルトヒータ18は所定の周波数の
交流磁界を発生し、鋳造ベルト10内に過電流を発生せし
めて鋳造ベルト10を直接加熱するものである。したがっ
て、塗膜が施された鋳造ベルト10の表面温度は、塗膜の
断熱効果により、塗膜の厚さに応じた温度となり、表面
温度の分布は膜厚の分布に対応するようになる。The infrared camera 14 is provided to measure the temperature and the distribution of the surface of the casting belt 10 heated and dried by the belt heater 18 in a non-contact manner. The belt heater 18 generates an AC magnetic field of a predetermined frequency, generates an overcurrent in the casting belt 10, and directly heats the casting belt 10. Therefore, the surface temperature of the casting belt 10 on which the coating is applied becomes a temperature corresponding to the thickness of the coating due to the heat insulating effect of the coating, and the distribution of the surface temperature corresponds to the distribution of the film thickness.
膜厚分布測定表示装置16は鋳造ベルト表面各所の温度
のうち、鋳造ベルト10の送り方向に直角な直線上の表面
温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、表面温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
表面温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。The film thickness distribution measuring and displaying device 16 momentarily displays and outputs the surface temperature on a straight line perpendicular to the feed direction of the casting belt 10 among the temperatures at various points on the surface of the casting belt as a value representing the film thickness and its distribution. Alternatively, the relationship between the surface temperature and the film thickness may be obtained in advance by measurement and stored, and the surface temperature may be converted into the value of the film thickness based on the relationship, and the converted value may be displayed and output. .
以上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 the film thickness distribution online even during operation,
Breakout due to coating failure can be prevented beforehand, and by controlling the pressure of multiple coating nozzles so that the film thickness becomes uniform, plate cracks, wrinkles and scratches caused by uneven coating can be achieved. 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、14……赤外線カメラ、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 an embodiment of the present invention. In the figure, 10 ... casting belt, 14 ... infrared camera, 18 ... belt heater, 20 ... coating nozzle, 22 ... mold, 24 ...
... the upper roll.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 徳田 篤洋 大分県大分市大字西ノ洲１番地 新日本 製鐵株式会社大分製鐵所内 (56)参考文献 特開 平１−249250（ＪＰ，Ａ) 特開 平４−187349（ＪＰ，Ａ) 実開 平４−22160（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B22D 11/06 340 B22D 11/16 104 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsuhiro Tokuda 1 Nishinosu, Oita, Oita City, Oita Prefecture Nippon Steel Corporation Oita Works (56) References JP-A 1-249250 (JP, A) JP Hei 4-187349 (JP, A) Actual practice Hei 4-22160 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) B22D 11/06 340 B22D 11/16 104
Claims (1)
（10）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、 塗膜を施された鋳造ベルト（10）を加熱することによっ
て塗膜を乾燥せしめる加熱手段（18）と、 該加熱手段（18）により加熱乾燥された鋳造ベルト（1
0）の表面の温度およびその分布を非接触で測定する温
度測定手段（14）と、 該温度測定手段（14）が測定した温度およびその分布に
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
膜厚分布測定装置。1. A coating film thickness distribution measuring apparatus for continuously measuring the film thickness and distribution of a coating film applied on a casting belt (10) of an operating twin-belt continuous casting machine, comprising: Heating means (18) for drying the coating film by heating the cast belt (10) provided with the heat treatment, and a casting belt (1) heated and dried by the heating means (18).
0) a temperature measuring means (14) for measuring the surface temperature and its distribution in a non-contact manner; and measuring the thickness of the coating film and its distribution based on the temperature and its distribution measured by the temperature measuring means (14). A coating film thickness distribution measuring device comprising a film thickness measuring means (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31280290A JP2915552B2 (en) | 1990-11-20 | 1990-11-20 | Coating film thickness distribution measuring device for twin belt casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31280290A JP2915552B2 (en) | 1990-11-20 | 1990-11-20 | Coating film thickness distribution measuring device for twin belt casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04187348A JPH04187348A (en) | 1992-07-06 |
| JP2915552B2 true JP2915552B2 (en) | 1999-07-05 |
Family
ID=18033584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31280290A Expired - Fee Related JP2915552B2 (en) | 1990-11-20 | 1990-11-20 | Coating film thickness distribution measuring device for twin belt casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2915552B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020073978A (en) * | 2001-03-19 | 2002-09-28 | 현대중공업 주식회사 | Method of measuring the thickness of thin film layer using infrared thermal image system |
| 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 |
-
1990
- 1990-11-20 JP JP31280290A patent/JP2915552B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04187348A (en) | 1992-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |