JPH08239745A - Control device of adhesion in width direction of hot-dipped steel strip - Google Patents
Control device of adhesion in width direction of hot-dipped steel stripInfo
- Publication number
- JPH08239745A JPH08239745A JP4198195A JP4198195A JPH08239745A JP H08239745 A JPH08239745 A JP H08239745A JP 4198195 A JP4198195 A JP 4198195A JP 4198195 A JP4198195 A JP 4198195A JP H08239745 A JPH08239745 A JP H08239745A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- width direction
- profile
- wiping nozzle
- strip
- 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
Landscapes
- Coating With Molten Metal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融金属めっきの鋼帯
幅方向付着量の制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for controlling the amount of molten metal plating deposited in the width direction of a steel strip.
【０００２】[0002]
【従来の技術】一般に、溶融金属めっきの鋼帯幅方向付
着量は、ワイピングノズルから噴射されるガスの幅方向
の均一性とワイピングノズルのガス噴出口から鋼帯まで
の距離の均一性で決定される。このうち後者のワイピン
グノズルのガス噴出口から鋼帯までの距離を幅方向で均
一に保つことは、鋼帯の幅方向の反り（Ｃ反り）および
シンクロールとトップロール間での鋼帯の振動が克服で
きず、未だ実現されていない。2. Description of the Related Art In general, the amount of molten metal plating deposited in the width direction of a steel strip is determined by the uniformity of the gas jetted from a wiping nozzle in the width direction and the uniformity of the distance from the gas outlet of the wiping nozzle to the steel strip. To be done. Among these, maintaining the distance from the gas ejection port of the latter wiping nozzle to the steel strip uniformly in the width direction means that the steel strip warps in the width direction (C warpage) and the vibration of the steel strip between the sink roll and the top roll. Could not be overcome and has not been realized yet.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、このような
従来技術の現状に鑑み、ワイピングノズルのガス噴出口
から鋼帯までの距離が幅方向で不均一であっても、鋼帯
幅方向の付着量を一定にすることのできる溶融金属めっ
きの鋼帯幅方向付着量の制御装置を提供することを目的
とするものである。SUMMARY OF THE INVENTION In view of the state of the art as described above, the present invention is directed to the strip width direction even if the distance from the gas ejection port of the wiping nozzle to the strip is uneven in the width direction. It is an object of the present invention to provide a controller for controlling the adhesion amount of a molten metal plating in the width direction of a steel strip capable of keeping the adhesion amount of the steel plate constant.
【０００４】[0004]
【課題を解決するための手段】本発明は、鋼帯を溶融金
属めっき浴内に導き、該めっき浴外に引き上げた後、ワ
イピングノズルからガスを噴射しめっき付着量を制御す
る溶融金属めっきの鋼帯幅方向付着量の制御装置におい
て、該ワイピングノズルを鋼帯幅方向に複数に分割し、
かつ該ワイピングノズル近傍に、鋼帯の通板基準ライン
に対する通板位置偏差を測定する距離計を鋼帯幅方向に
対して複数個配置しておき、該距離計による計測値に基
づき鋼帯幅方向のプロフィールを演算するプロフィール
演算装置と、該鋼帯幅方向のプロフィールに合わせるよ
うに分割されたワイピングノズルのそれぞれを前後に移
動させる移動制御装置と、該移動制御装置の制御信号に
基づいて該ワイピングノズルの鋼帯表面からの位置を調
節する移動装置を設けたことを特徴とする溶融金属めっ
きの鋼帯幅方向付着量の制御装置であり、また、本発明
は、鋼帯を溶融金属めっき浴内に導き、該めっき浴外に
引き上げた後、ワイピングノズルからガスを噴射しめっ
き付着量を制御する溶融金属めっきの鋼帯幅方向付着量
の制御装置において、該ワイピングノズルを鋼帯幅方向
に複数に分割し、かつ該ワイピングノズル近傍に、鋼帯
の通板基準ラインに対する通板位置偏差を測定する距離
計を鋼帯幅方向に対して複数個配置しておき、該距離計
による計測値に基づき鋼帯幅方向のプロフィールを演算
するプロフィール演算装置と、該鋼帯幅方向のプロフィ
ールに合わせて分割されたワイピングノズルのそれぞれ
のガス噴射量を制御する流量制御装置と、該流量制御装
置の制御信号に基づいて該ワイピングノズルのガス噴射
量を調節する制御弁を設けたことを特徴とする溶融金属
めっきの鋼帯幅方向付着量の制御装置である。According to the present invention, a steel strip is introduced into a molten metal plating bath, pulled out of the plating bath, and then a gas is jetted from a wiping nozzle to control the amount of the deposited metal. In the control device for the adhesion amount in the steel strip width direction, the wiping nozzle is divided into a plurality of pieces in the steel strip width direction,
Further, in the vicinity of the wiping nozzle, a plurality of rangefinders for measuring the strip position deviation with respect to the strip reference line of the steel strip are arranged in the strip width direction, and the strip width is measured based on the measured value by the rangefinder. A profile calculation device for calculating a profile in the direction, a movement control device for moving each of the wiping nozzles divided so as to match the profile in the width direction of the steel strip, and a movement control device based on a control signal from the movement control device. The present invention is a controller for controlling the amount of deposition of molten metal plating in the width direction of a steel strip, which is provided with a moving device that adjusts the position of the wiping nozzle from the surface of the steel strip. A device for controlling the amount of molten metal plating deposited in the width direction of the steel strip, which is introduced into the bath and pulled out of the plating bath, and then a gas is sprayed from a wiping nozzle to control the amount of coating applied. , The wiping nozzle is divided into a plurality of strips in the width direction of the steel strip, and a plurality of distance meters are arranged in the width direction of the strip in the vicinity of the wiping nozzle to measure a strip passage position deviation of the steel strip with respect to a strip passage reference line. In advance, a profile calculation device that calculates a profile in the width direction of the steel strip based on the measurement value of the range finder and a gas injection amount of each of the wiping nozzles divided according to the profile in the width direction of the steel strip are controlled. A flow rate control device, and a control valve for adjusting a gas injection amount of the wiping nozzle based on a control signal of the flow rate control device. .
【０００５】[0005]
【作用】本発明の溶融金属めっきの鋼帯幅方向付着量の
制御装置では、幅方向の鋼帯プロフィールに応じて、分
割されたワイピングノズルのそれぞれを鋼帯幅方向のプ
ロフィールに合わせるように前後に移動させるか、また
は、幅方向の鋼帯プロフィールに応じて、分割されたワ
イピングノズルのそれぞれのガス噴射量を鋼帯幅方向の
プロフィールに合わせて制御するようにしたので、鋼帯
のＣ反りの有無にかかわらず鋼帯幅方向の付着量のばら
つきを抑え、幅方向の付着量を均一にすることができ
る。According to the controller for controlling the amount of hot-dip galvanized steel strip in the width direction of the present invention, the divided wiping nozzles are moved back and forth according to the width-wise steel strip profile. Or the gas injection amount of each of the divided wiping nozzles is controlled according to the widthwise profile of the steel strip in accordance with the widthwise profile of the strip. It is possible to suppress variations in the amount of adhesion in the width direction of the steel strip and to make the amount of adhesion in the width direction uniform regardless of the presence or absence of.
【０００６】[0006]
【実施例】図１は本発明の溶融金属めっきの鋼帯幅方向
付着量の制御装置の一実施例を示す概略説明図である。
鋼帯１を図示しない溶融金属めっき浴内に導き、該めっ
き浴外に引き上げた後、ワイピングノズル３からガスを
噴射し溶融金属２のめっき付着量を制御している。この
実施例においては、ワイピングノズル３を図３に示すよ
うに鋼帯１の幅方向に複数に分割している。また該ワイ
ピングノズル３の上部には、鋼帯の通板基準ラインに対
する通板位置偏差を測定する距離計４を鋼帯１を挟んで
対向させ、鋼帯幅方向に対して複数個配置している。該
距離計４による計測値に基づき鋼帯幅方向のプロフィー
ルをプロフィール演算装置５により演算するとともに鋼
帯幅方向に分割されたワイピングノズル３のそれぞれ
を、図４に示すように鋼帯幅方向のプロフィールに合わ
せるように前後に移動させる移動制御装置６と、該移動
制御装置６の制御信号に基づいて該ワイピングノズル３
の鋼帯表面からの位置を調節する移動装置８が設けられ
ている。なお、移動制御装置６には、予め鋼帯１とワイ
ピングノズル３との基準距離１０が入力されている。こ
のように鋼帯幅方向のプロフィールに合わせて、分割さ
れた各ワイピングノズル３が基準距離１０を保つように
移動し、一定圧力のガスを噴射することにより幅方向の
めっき付着量を均一にすることができる。またなお、移
動装置８としては、シリンダー、あるいはラックピニオ
ン式、スクリュー式等の手段を用いることができる。FIG. 1 is a schematic explanatory view showing an embodiment of a control apparatus for the amount of molten metal plating deposited in the width direction of a steel strip according to the present invention.
After the steel strip 1 is introduced into a molten metal plating bath (not shown) and pulled out of the plating bath, a gas is jetted from the wiping nozzle 3 to control the amount of molten metal 2 deposited on the plating. In this embodiment, the wiping nozzle 3 is divided into a plurality in the width direction of the steel strip 1 as shown in FIG. Further, on the upper part of the wiping nozzle 3, a plurality of distance gauges 4 for measuring the strip running position deviation of the steel strip with respect to the strip running reference line are opposed to each other across the steel strip 1 and a plurality of strips are arranged in the width direction of the strip. There is. The profile in the width direction of the steel strip is calculated by the profile calculation device 5 based on the value measured by the distance meter 4, and each of the wiping nozzles 3 divided in the width direction of the steel strip is measured in the width direction of the steel strip as shown in FIG. A movement control device 6 that moves back and forth so as to match the profile, and the wiping nozzle 3 based on a control signal from the movement control device 6.
A moving device 8 for adjusting the position from the surface of the steel strip is provided. A reference distance 10 between the steel strip 1 and the wiping nozzle 3 is input to the movement control device 6 in advance. In this way, each of the divided wiping nozzles 3 moves so as to maintain the reference distance 10 in accordance with the profile in the width direction of the steel strip, and a gas having a constant pressure is jetted to make the amount of plating adhered in the width direction uniform. be able to. The moving device 8 may be a cylinder, a rack and pinion type, a screw type, or the like.
【０００７】また、図２は本発明の溶融金属めっきの鋼
帯幅方向付着量の制御装置の他の実施例を示す概略説明
図である。前記実施例と同様に、鋼帯１を図示しない溶
融金属めっき浴内に導き、該めっき浴外に引き上げた
後、ワイピングノズル３からガスを噴射し溶融金属２の
めっき付着量を制御している。この実施例においても、
ワイピングノズル３は図５に示すように鋼帯１の幅方向
に複数に分割している。また該ワイピングノズル３の上
部には、鋼帯の通板基準ラインに対する通板位置偏差を
測定する距離計４を鋼帯１を挟んで対向させ、鋼帯幅方
向に対して複数個配置している。該距離計４による計測
値に基づき鋼帯幅方向のプロフィールをプロフィール演
算装置５により演算するとともに鋼帯幅方向に分割され
たワイピングノズル３のそれぞれのガス噴射量を鋼帯幅
方向のプロフィールに合わせて制御する流量制御装置７
と、該流量制御装置７の制御信号に基づいて該ワイピン
グノズル３のガス噴射量を調節する制御弁９が設けられ
ている。なお、流量制御装置７には、予め鋼帯１とワイ
ピングノズル３との基準距離１０におけるガス噴射量に
対して、あらかじめ定めた鋼板の遠近距離に応じたガス
噴射量の増減量が入力されている。このように鋼帯幅方
向のプロフィールに合わせて、分割された各ワイピング
ノズル３のそれぞれのガス噴射量を基準距離１０と比較
して変化させることにより幅方向のめっき付着量を均一
にすることができる。FIG. 2 is a schematic explanatory view showing another embodiment of the controller for controlling the amount of molten metal plating deposited in the width direction of the steel strip according to the present invention. Similar to the above-mentioned embodiment, the steel strip 1 is introduced into a molten metal plating bath (not shown), pulled out of the plating bath, and then a gas is jetted from the wiping nozzle 3 to control the amount of molten metal 2 deposited on the plating. . Also in this example,
As shown in FIG. 5, the wiping nozzle 3 is divided into a plurality of parts in the width direction of the steel strip 1. Further, on the upper part of the wiping nozzle 3, a plurality of distance gauges 4 for measuring the strip running position deviation of the steel strip with respect to the strip running reference line are opposed to each other across the steel strip 1 and a plurality of strips are arranged in the width direction of the strip. There is. The profile in the width direction of the steel strip is calculated by the profile calculation device 5 based on the value measured by the distance meter 4, and the respective gas injection amounts of the wiping nozzles 3 divided in the width direction of the steel strip are adjusted to the profile in the width direction of the steel strip. Flow control device 7 controlled by
And a control valve 9 for adjusting the gas injection amount of the wiping nozzle 3 based on the control signal of the flow rate control device 7. It should be noted that the flow control device 7 is input with an increase / decrease amount of the gas injection amount according to a predetermined distance of the steel plate with respect to the gas injection amount at the reference distance 10 between the steel strip 1 and the wiping nozzle 3 in advance. There is. As described above, by adjusting the gas injection amount of each of the divided wiping nozzles 3 in comparison with the reference distance 10 in accordance with the profile in the width direction of the steel strip, it is possible to make the coating amount in the width direction uniform. it can.
【０００８】[0008]
【発明の効果】本発明によれば、幅方向の鋼帯プロフィ
ールに応じて、分割されたワイピングノズルのそれぞれ
を鋼帯幅方向のプロフィールに合わせ基準距離を保つよ
うに前後に移動させるか、または、ガス噴射量を鋼帯幅
方向のプロフィールに合わせて制御することができるの
で、鋼帯のＣ反りの有無にかかわらず鋼帯幅方向の付着
量のばらつきを抑え、幅方向の付着量を均一にすること
ができる。According to the present invention, each of the divided wiping nozzles is moved back and forth according to the widthwise steel strip profile so as to maintain the reference distance in accordance with the widthwise steel strip profile. Since the gas injection amount can be controlled according to the profile in the width direction of the steel strip, the variation in the adhesion amount in the width direction of the steel strip can be suppressed and the adhesion amount in the width direction can be made uniform regardless of the presence or absence of C warping of the steel strip. Can be
【図１】本発明の一実施例を示す概略説明図である。FIG. 1 is a schematic explanatory view showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す概略説明図である。FIG. 2 is a schematic explanatory view showing another embodiment of the present invention.
【図３】本発明の分割されたワイピングノズルと鋼帯と
の位置関係を示す平面図である。FIG. 3 is a plan view showing a positional relationship between a divided wiping nozzle and a steel strip according to the present invention.
【図４】鋼帯幅方向のプロフィールと分割されたワイピ
ングノズルとの位置関係を示す平面図である。FIG. 4 is a plan view showing the positional relationship between the profile in the width direction of the steel strip and the divided wiping nozzles.
【図５】鋼帯幅方向のプロフィールと分割されたワイピ
ングノズルとの位置関係を示す平面図である。FIG. 5 is a plan view showing the positional relationship between the profile in the width direction of the steel strip and the divided wiping nozzles.
１ 鋼帯 ２ 溶融金属 ３ ワイピングノズル ４ 距離計 ５ プロフィール演算装置 ６ 移動制御装置 ７ 流量制御装置 ８ 移動装置 ９ 制御弁 １０ 基準距離 1 Steel Strip 2 Molten Metal 3 Wiping Nozzle 4 Distance Meter 5 Profile Calculator 6 Movement Control Device 7 Flow Control Device 8 Moving Device 9 Control Valve 10 Reference Distance
Claims (2)
っき浴外に引き上げた後、ワイピングノズルからガスを
噴射しめっき付着量を制御する溶融金属めっきの鋼帯幅
方向付着量の制御装置において、該ワイピングノズルを
鋼帯幅方向に複数に分割し、かつ該ワイピングノズル近
傍に、鋼帯の通板基準ラインに対する通板位置偏差を測
定する距離計を鋼帯幅方向に対して複数個配置してお
き、該距離計による計測値に基づき鋼帯幅方向のプロフ
ィールを演算するプロフィール演算装置と、該鋼帯幅方
向のプロフィールに合わせるように分割されたワイピン
グノズルのそれぞれを前後に移動させる移動制御装置
と、該移動制御装置の制御信号に基づいて該ワイピング
ノズルの鋼帯表面からの位置を調節する移動装置を設け
たことを特徴とする溶融金属めっきの鋼帯幅方向付着量
の制御装置。1. A steel strip is introduced into a molten metal plating bath, pulled out of the plating bath, and then a gas is sprayed from a wiping nozzle to control the amount of deposit of the molten metal. In the device, the wiping nozzle is divided into a plurality of strips in the width direction of the steel strip, and a plurality of distance meters in the width direction of the strip are provided in the vicinity of the wiping nozzle to measure a stripping position deviation of the strip with respect to a striping reference line. Individually arranged and move back and forth each of the profile calculation device that calculates the profile in the width direction of the steel strip based on the measurement value by the distance meter and the wiping nozzle divided so as to match the profile in the width direction of the steel strip. And a moving device for adjusting the position of the wiping nozzle from the surface of the steel strip based on a control signal of the moving control device. Control device for the amount of metal plating adhered in the width direction of the steel strip.
っき浴外に引き上げた後、ワイピングノズルからガスを
噴射しめっき付着量を制御する溶融金属めっきの鋼帯幅
方向付着量の制御装置において、該ワイピングノズルを
鋼帯幅方向に複数に分割し、かつ該ワイピングノズル近
傍に、鋼帯の通板基準ラインに対する通板位置偏差を測
定する距離計を鋼帯幅方向に対して複数個配置してお
き、該距離計による計測値に基づき鋼帯幅方向のプロフ
ィールを演算するプロフィール演算装置と、該鋼帯幅方
向のプロフィールに合わせて分割されたワイピングノズ
ルのそれぞれのガス噴射量を制御する流量制御装置と、
該流量制御装置の制御信号に基づいて該ワイピングノズ
ルのガス噴射量を調節する制御弁を設けたことを特徴と
する溶融金属めっきの鋼帯幅方向付着量の制御装置。2. A steel strip is introduced into a bath of molten metal plating, pulled out of the bath, and then a gas is sprayed from a wiping nozzle to control the amount of deposit of the molten metal. In the device, the wiping nozzle is divided into a plurality of strips in the width direction of the steel strip, and a plurality of distance meters in the width direction of the strip are provided in the vicinity of the wiping nozzle to measure a stripping position deviation of the strip with respect to a striping reference line. Individually arranged, the profile calculation device for calculating the profile in the width direction of the steel strip based on the measurement value by the distance meter, and the respective gas injection amounts of the wiping nozzles divided according to the profile in the width direction of the strip. A flow control device for controlling,
A control device for controlling a deposition amount of molten metal plating in a steel strip width direction, comprising a control valve for adjusting a gas injection amount of the wiping nozzle based on a control signal of the flow rate control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4198195A JPH08239745A (en) | 1995-03-01 | 1995-03-01 | Control device of adhesion in width direction of hot-dipped steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4198195A JPH08239745A (en) | 1995-03-01 | 1995-03-01 | Control device of adhesion in width direction of hot-dipped steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08239745A true JPH08239745A (en) | 1996-09-17 |
Family
ID=12623386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4198195A Pending JPH08239745A (en) | 1995-03-01 | 1995-03-01 | Control device of adhesion in width direction of hot-dipped steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08239745A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100530054B1 (en) * | 2001-08-24 | 2005-11-22 | 주식회사 포스코 | Apparatus for controlling distance of an air knife in continuous galvanizing line |
| KR101505271B1 (en) * | 2013-03-28 | 2015-03-24 | 현대제철 주식회사 | Gas wiping apparatus and method of manufacturing galvannealed steel sheet using the same |
| KR20180074426A (en) * | 2016-12-23 | 2018-07-03 | 주식회사 포스코 | Thickness control apparatus for coating layer of steel plate |
-
1995
- 1995-03-01 JP JP4198195A patent/JPH08239745A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100530054B1 (en) * | 2001-08-24 | 2005-11-22 | 주식회사 포스코 | Apparatus for controlling distance of an air knife in continuous galvanizing line |
| KR101505271B1 (en) * | 2013-03-28 | 2015-03-24 | 현대제철 주식회사 | Gas wiping apparatus and method of manufacturing galvannealed steel sheet using the same |
| KR20180074426A (en) * | 2016-12-23 | 2018-07-03 | 주식회사 포스코 | Thickness control apparatus for coating layer of steel plate |
| KR101879107B1 (en) * | 2016-12-23 | 2018-07-16 | 주식회사 포스코 | Thickness control apparatus for coating layer of steel plate |
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