JP3311262B2 - Hot-dip metal plating apparatus and hot-dip metal plating method - Google Patents
Hot-dip metal plating apparatus and hot-dip metal plating methodInfo
- Publication number
- JP3311262B2 JP3311262B2 JP34969996A JP34969996A JP3311262B2 JP 3311262 B2 JP3311262 B2 JP 3311262B2 JP 34969996 A JP34969996 A JP 34969996A JP 34969996 A JP34969996 A JP 34969996A JP 3311262 B2 JP3311262 B2 JP 3311262B2
- Authority
- JP
- Japan
- Prior art keywords
- plating
- molten metal
- bath
- plating bath
- steel plate
- 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.)
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- Coating With Molten Metal (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼板の溶融金属め
っき装置およびめっき方法に関し、とくに溶融金属めっ
き浴槽内のめっき浴に磁場を印加してめっき浴を保持し
つつ溶融金属めっき浴槽底部に設けた開口部から鋼板を
侵入させ上方に引き上げてめっきを行う鋼板の溶融金属
めっき装置およびめっき方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-dip metal plating apparatus and a plating method for a steel sheet, and more particularly, to a method for applying a magnetic field to a plating bath in a hot-dip metal plating bath and holding the plating bath at the bottom of the hot-dip metal plating bath. TECHNICAL FIELD The present invention relates to a hot-dip metal plating apparatus and a plating method for a steel sheet in which a steel sheet is intruded from an opening and pulled up to perform plating.
【０００２】[0002]
【従来の技術】溶融金属めっき鋼板は、溶融金属として
はZn、Al、Pb、Sn等が使用され、自動車用、建材用、家
電用、缶用として広く用いられている。ここで溶融金属
めっき鋼板の一例として、Znを使用した溶融亜鉛めっき
鋼板の一般的な製造方法を説明する。冷延鋼板を前処理
工程で表面を洗浄し、非酸化性あるいは還元性の雰囲気
中で加熱、焼鈍し、次いで、鋼板温度をめっきに適した
温度に酸化させることなく冷却した後、めっき浴中に連
続的に浸漬させる。ついで、浴中に浸漬されたロール
（シンクロール等）にて鉛直方向に鋼板の向きを変えた
後、めっき浴から引き上げ、鋼板表面に付着した過剰の
亜鉛をガスワイピング等の付着量調整装置により除去し
て付着量を調整し、冷却する。2. Description of the Related Art Hot-dip metal-plated steel sheets use Zn, Al, Pb, Sn and the like as molten metal, and are widely used for automobiles, building materials, home appliances and cans. Here, as an example of a hot-dip galvanized steel sheet, a general method of manufacturing a hot-dip galvanized steel sheet using Zn will be described. The surface of the cold-rolled steel sheet is washed in a pretreatment step, heated and annealed in a non-oxidizing or reducing atmosphere, and then cooled without oxidizing the steel sheet to a temperature suitable for plating, and then cooled in a plating bath. Immersed continuously. Then, after changing the direction of the steel sheet in the vertical direction with a roll (sink roll etc.) immersed in the bath, the steel sheet is pulled up from the plating bath, and excess zinc adhering to the steel sheet surface is removed by an adhesion amount adjusting device such as gas wiping. Remove, adjust the amount of adhesion, and cool.
【０００３】しかし、上記方法はシンクロール等の浴中
機器が存在するため、めっき浴槽は極めて大きくなり、
めっき浴種類の変更などに際して自由度が小さいうえ、
シンクロールのメンテナンスが煩雑であり、あるいはド
ロスがシンクロールと被めっき鋼板との間に噛み込み、
表面疵などの品質欠陥が発生するなどの問題があった。[0003] However, in the above method, the plating bath becomes extremely large because bath equipment such as a sink roll is present.
The flexibility is small when changing the plating bath type, etc.
Sink roll maintenance is complicated, or dross bites between the sink roll and the steel plate to be plated,
There were problems such as the occurrence of quality defects such as surface flaws.
【０００４】そこで、シンクロール等の浴中機器を用い
ないめっき方法が種々提案されてきたが、鋼板の両面を
安定してめっきできるものとして、いわゆる空中ポット
方式が提案されている。それは、図５に示すように、底
部に開口部を有し、めっき浴を保持しためっき浴槽を備
え、その開口部から鋼板を侵入させ上方に引き上げてめ
っきを施すものである。Therefore, various plating methods without using in-bath equipment such as sink rolls have been proposed, and a so-called air pot method has been proposed as a method capable of stably plating both surfaces of a steel sheet. As shown in FIG. 5 , a plating bath having an opening at the bottom and holding a plating bath is provided, and a steel plate is intruded from the opening and pulled up to perform plating.
【０００５】ところで、この空中ポット方式のめっき方
法の重要なポイントは、開口部からめっき浴を漏洩させ
ないことであり、電磁力の作用を利用した方法が開示さ
れている。例えば、特開昭63−310949号公報には、リニ
アモーターで溶融金属を保持する方法が、また、特開平
５−86446 号公報には移動磁場の作用による電磁力と高
周波磁場の作用による電磁力を利用して溶融金属を保持
する方法が提案されている。また、さらに、特開昭63−
303045号公報では、電磁力と気体圧により溶融金属を保
持する方法が開示されている。An important point of the plating method of the aerial pot method is to prevent the plating bath from leaking from the opening, and a method utilizing the action of electromagnetic force is disclosed. For example, JP-A-63-310949 discloses a method of holding a molten metal by a linear motor, and JP-A-5-86446 discloses an electromagnetic force by the action of a moving magnetic field and an electromagnetic force by the action of a high-frequency magnetic field. There has been proposed a method for holding a molten metal by utilizing the method. Further, Japanese Unexamined Patent Publication No.
Japanese Patent No. 303045 discloses a method for holding a molten metal by an electromagnetic force and a gas pressure.
【０００６】しかしながら、上記のような電磁力を利用
する方法では、安定操業中のめっき時に比べ、めっき液
を供給するめっき開始時およびめっき液を排出するめっ
き終了時のようなめっき浴界面が変動する非定常時で
は、電磁力の作用が不充分となるため、めっき浴槽底部
の開口部からめっき浴が漏れ出すことがあった。電磁力
を利用する方法では、一旦めっき浴の漏れが発生したと
しても、電磁力の作用が充分になった時点で漏れを防止
してめっき浴保持が可能になる。しかし、多少なりとも
めっき浴の漏れが発生すると、前記開口部の鉛直方向鋼
板パスライン上に位置する開口部より上流側の各鋼板支
持装置（デフレクタロール、サポートロール、ガイドロ
ール等）にめっき液が付着し、鋼板にピックアップされ
て品質欠陥になるため、ロールの清掃あるいはロールの
交換等のメンテナンスを頻度よく必要としていた。However, in the above-described method utilizing electromagnetic force, the plating bath interface at the start of plating for supplying the plating solution and at the end of plating for discharging the plating solution is more variable than during plating during stable operation. In an unsteady state, the action of the electromagnetic force becomes insufficient, so that the plating bath may leak from the opening at the bottom of the plating bath. In the method using the electromagnetic force, even if the plating bath leaks once, the plating bath can be held by preventing the leakage when the action of the electromagnetic force becomes sufficient. However, if any leakage of the plating bath occurs, the plating solution is applied to each steel plate supporting device (deflector roll, support roll, guide roll, etc.) upstream of the opening positioned on the vertical steel plate pass line of the opening. Adheres and is picked up by the steel plate, resulting in a quality defect. Therefore, maintenance such as cleaning of the roll or replacement of the roll is frequently required.
【０００７】さらに、特開昭63−303045号公報に開示さ
れたような気体を噴射して鋼板導入部をシールする方法
であっても、めっき開始時およびめっき終了時のような
めっき浴界面が変動する非定常時では、変動する液面レ
ベルを検知してそれに応じて気体噴射圧を制御すること
は極めて困難であり、めっき浴槽底部の開口部からめっ
き浴が漏れ出すことがあった。このように、空中ポット
方式のめっき方法においては、めっき開始時あるいはめ
っき終了時には、円滑なめっき操業とはなっておらず、
頻繁な保守を必要としていたという問題が残されてい
た。Further, even in the method disclosed in Japanese Patent Application Laid-Open No. 63-303045, in which gas is injected to seal the steel sheet introduction portion, the interface of the plating bath at the start of plating and at the end of plating is reduced. In a fluctuating unsteady state, it is extremely difficult to detect a fluctuating liquid level and control the gas injection pressure accordingly, and the plating bath may leak from the opening at the bottom of the plating bath. Thus, in the plating method of the aerial pot method, at the start of plating or at the end of plating, the plating operation is not smooth,
The problem remained that it required frequent maintenance.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、上記した問
題に鑑み、めっき開始時および終了時にめっき液の漏洩
を防止し、安定しためっき操業を可能にする溶融金属め
っき装置および溶融金属めっき方法を提供することを目
的とする。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a molten metal plating apparatus and a molten metal plating method for preventing a plating solution from leaking at the start and end of plating and enabling a stable plating operation. The purpose is to provide.
【０００９】[0009]
【課題を解決するための手段】本発明は、底部に設けた
開口部から鋼板を侵入させ上方に引き上げて該鋼板にめ
っきを施すめっき浴槽と、該めっき浴槽内のめっき浴に
磁場を印加して該めっき浴を保持する電磁シール装置と
からなる溶融金属めっき装置において、前記開口部直下
に、溶融金属の下方への漏洩を抑止する回転可能なロー
ルで支持された耐熱ベルトからなる一対のシール部材
を、前記鋼板表面および裏面にそれぞれ対向し、かつ接
離可能に配設したことを特徴とする鋼板の溶融金属めっ
き装置であり、また、本発明では、前記ロールを駆動可
能に配設してもよい。According to the present invention, there is provided a plating bath for plating a steel sheet by invading a steel plate from an opening provided at the bottom and pulling the steel plate upward, and applying a magnetic field to a plating bath in the plating bath. A molten metal plating apparatus comprising an electromagnetic seal device for holding the plating bath, wherein a rotatable row for preventing the molten metal from leaking downward just below the opening.
A pair of sealing members made of supported heat-resistant belt Le faces respectively on the steel sheet surface and the back surface, and Ri molten metal plating apparatus der of the steel sheet characterized by separable therefrom that is disposed, also, In the present invention, the roll can be driven.
Noh may be arranged .
【００１０】また、本発明は、底部に設けた開口部から
鋼板を侵入させ上方に引き上げて該鋼板にめっきを施す
めっき浴槽と、該めっき浴槽内のめっき浴に磁場を印加
して該めっき浴を保持する電磁シール装置とからなる溶
融金属めっき装置において、前記開口部直下に、溶融金
属の下方への漏洩を抑止する一対のガスシール装置を、
前記鋼板表面および裏面にそれぞれ対向して配設したこ
とを特徴とする鋼板の溶融金属めっき装置である。[0010] The present invention also provides a plating bath for injecting a steel plate from an opening provided at the bottom and pulling the steel plate upward to plate the steel plate, and applying a magnetic field to the plating bath in the plating bath to form the plating bath. In a molten metal plating apparatus consisting of an electromagnetic seal device that holds a pair of gas seal devices that suppress leakage of molten metal directly below the opening,
A hot-dip metal plating apparatus for a steel sheet, wherein the apparatus is disposed so as to face the front and rear surfaces of the steel sheet.
【００１１】また、本発明は、底部に設けた開口部から
鋼板を侵入させ上方に引き上げて該鋼板にめっきを施す
めっき浴槽と、該めっき浴槽内のめっき浴に磁場を印加
して該めっき浴を保持する電磁シール装置とからなる溶
融金属めっき装置において、前記開口部直下に、溶融金
属の下方への漏洩を抑止する一対のシール部材を前記鋼
板表面および裏面にそれぞれ対向し、かつ接離可能に配
設し、さらに該シール部材の直下に、溶融金属の下方へ
の漏洩を防止する一対のガスシール装置を、前記鋼板表
面および裏面にそれぞれ対向して配設したことを特徴と
する鋼板の溶融金属めっき装置であり、また、本発明で
は、前記シール部材を、回転可能なロールで支持された
耐熱ベルトとしてもよい。また、さらに、前記ロールを
駆動可能に配設してもよい。[0011] Further, the present invention provides a plating bath for injecting a steel plate through an opening provided at the bottom and pulling the steel plate upward to plate the steel plate, and applying a magnetic field to the plating bath in the plating bath to form the plating bath. A molten metal plating apparatus comprising an electromagnetic seal device that holds a pair of sealing members that directly prevent the molten metal from leaking below the opening, opposing the front and back surfaces of the steel sheet, and being capable of coming and going. Disposed immediately below the sealing member, a pair of gas sealing devices for preventing the molten metal from leaking downward, the steel plate characterized by being disposed opposite to the front and rear surfaces of the steel plate, respectively. a molten metal plating apparatus, also in the present invention
The seal member was supported by a rotatable roll.
It may be a heat-resistant belt. In addition, the roll
It may be arranged to be drivable .
【００１２】また、本発明は、溶融金属めっき浴槽内の
めっき浴に磁場を印加して該めっき浴を保持しつつ該溶
融金属めっき浴槽の底部に設けた開口部から鋼板を侵入
させ上方に引き上げてめっきする鋼板の溶融金属めっき
方法において、前記溶融金属めっき浴槽に溶融金属が供
給されない状態でめっきを開始するにあたり、前記開口
部直下で前記鋼板の表面および裏面にそれぞれ対向して
一対のシール部材を所定位置まで近接または接触させつ
つ、および、鋼板表裏面に対しガスを吹付けつつ、該鋼
板を所定の通板速度で通板させ、該めっき浴槽に磁場を
印加したのち、溶融金属を供給してめっきを開始するこ
とを特徴とする鋼板の溶融金属めっき方法である。[0012] Also, the present invention is, upward to penetrate the steel plate from the opening provided in the bottom of the molten metal plating bath by applying a magnetic field to the plating bath in the molten metal plating bath while maintaining the plating bath In the hot-dip metal plating method for a steel plate to be pulled up and plated, upon starting plating in a state where the molten metal is not supplied to the hot-dip metal plating bath, a pair of seals are respectively opposed to the front and rear surfaces of the steel plate immediately below the opening. while proximity or contact a member to a predetermined position, and, while blowing gas against the steel plate front and rear surfaces, the steel plate was to be passing plate at a predetermined sheet passing speed, then a magnetic field is applied to the plating bath, the molten A hot metal plating method for a steel sheet, comprising supplying a metal and starting plating.
【００１３】また、本発明は、溶融金属めっき浴槽内の
めっき浴に磁場を印加して該めっき浴を保持しつつ該溶
融金属めっき浴槽の底部に設けた開口部から鋼板を侵入
させ上方に引き上げてめっきする鋼板の溶融金属めっき
方法において、めっきを終了するにあたり、前記開口部
直下で前記鋼板の表面および裏面にそれぞれ対向して一
対のシール部材を所定位置まで近接または接触させつ
つ、および、鋼板表裏面に対しガスを吹付けつつ、該溶
融金属めっき浴槽への溶融金属の供給を停止したのち、
該溶融金属めっき浴槽内の溶融金属を鋼板に付着させる
かあるいは該溶融金属めっき浴槽内の溶融金属を連通し
た補助浴槽へ移送して該溶融金属めっき浴槽内を空に
し、ついで該溶融金属めっき浴槽内への磁場印加を停止
してめっきを終了することを特徴とする鋼板の溶融金属
めっき方法である。また、本発明は、溶融金属めっき浴
槽内のめっき浴に磁場を印加して該めっき浴を保持しつ
つ該溶融金属めっき浴槽の底部に設けた開口部から鋼板
を侵入させ上方に引き上げてめっきする鋼板の溶融金属
めっき方法において、前記溶融金属めっき浴槽に溶融金
属が供給されない状態でめっきを開始するにあたり、前
記開口部直下で前記鋼板の表面および裏面にそれぞれ対
向して回転可能なロールで支持された耐熱ベルトからな
る一対のシール部材を所定位置まで近接または接触させ
つつ、および／または、鋼板表裏面に対しガスを吹付け
つつ、該鋼板を所定の通板速度で通板させ、該めっき浴
槽に磁場を印加したのち、溶融金属を供給してめっきを
開始することを特徴とする鋼板の溶融金属めっき方法で
ある。 また、本発明は、溶融金属めっき浴槽内のめっき
浴に磁場を印加して該めっき浴を保持しつつ該溶融金属
めっき浴槽の底部に設けた開口部から鋼板を侵入させ上
方に引き上げてめっきする鋼板の溶融金属めっき方法に
おいて、めっきを終了するにあたり、前記開口部直下で
前記鋼板の表面および裏面にそれぞれ対向して回転可能
なロールで支持された耐熱ベルトからなる一対のシール
部材を所定位置まで近接または接触させつつ、および／
または、鋼板表裏面に対しガスを吹付けつつ、該溶融金
属めっき浴槽内の溶融金属を鋼板に付着させるかあるい
は該溶融金属めっき浴槽内の溶融金属を連通した補助浴
槽へ移送して該溶融金属めっき浴槽内を空にし、ついで
該溶融金属めっき浴槽内への磁場印加を停止してめっき
を 終了することを特徴とする鋼板の溶融金属めっき方法
である。 Further , the present invention provides a method for applying a magnetic field to a plating bath in a hot-dip metal plating bath, and holding the bath, invading a steel plate from an opening provided at the bottom of the hot-dip plating bath and pulling the steel plate upward. in the molten metal plating method of the steel sheet to plating Te, upon completion of the plating, while the proximity or contact with a pair of seal members to a predetermined position to face respectively the front and back surfaces of the steel sheet immediately under said opening, and After the supply of the molten metal to the molten metal plating bath is stopped while blowing gas to the front and back surfaces of the steel sheet,
The molten metal in the molten metal plating bath is attached to a steel plate or the molten metal in the molten metal plating bath is transferred to an auxiliary bath connected to the bath to empty the molten metal plating bath, and then the molten metal plating bath is This is a method for hot-dip coating a steel sheet, wherein the application of a magnetic field to the inside is stopped to terminate the plating. The present invention also provides a hot-dip metal plating bath.
A magnetic field is applied to the plating bath in the tank to hold the plating bath.
From the opening provided at the bottom of the bath
Metal in the steel sheet to be plated
In the plating method, the molten metal plating bath is
Before starting plating with no metal supplied,
Directly below the opening, the front and back of the steel plate
From a heat-resistant belt supported by rolls
A pair of sealing members
And / or spray gas to front and back of steel plate
While passing the steel sheet at a predetermined passing speed, the plating bath
After applying a magnetic field to the tank, supply molten metal to perform plating.
In the hot-dip metal plating method of steel sheet, characterized by starting
is there. In addition, the present invention provides a method for plating a molten metal plating bath.
Applying a magnetic field to the bath while holding the plating bath;
The steel plate enters through the opening at the bottom of the plating bath and
Metal plating method for steel sheet to be pulled up and plated
At the end of plating, immediately below the opening
Can rotate facing the front and back of the steel plate respectively
A pair of seals consisting of a heat-resistant belt supported by various rolls
Bringing the member close to or in contact with the predetermined position, and / or
Or, while blowing gas to the front and back of the steel sheet,
Whether the molten metal in the metal plating bath adheres to the steel plate
Is an auxiliary bath which communicates the molten metal in the bath.
To the bath to empty the bath
Stop applying magnetic field to the bath
Metal plating method for steel sheet characterized by terminating the process
It is.
【００１４】[0014]
【発明の実施の形態】まず、本発明の溶融金属めっき装
置の構成について説明する。図１に本発明の１実施例で
ある溶融金属めっき装置を示す。本発明の溶融金属めっ
き装置６は、底部に開口部３を有するめっき浴槽１と、
電磁力を発生し、めっき浴を保持する電磁シール装置２
とめっき液の下方への漏洩を抑止するためのシール部材
４とから構成される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the configuration of a hot-dip metal plating apparatus of the present invention will be described. FIG. 1 shows a hot-dip metal plating apparatus according to one embodiment of the present invention. The hot-dip metal plating apparatus 6 of the present invention includes a plating bath 1 having an opening 3 at the bottom,
Electromagnetic sealing device 2 that generates electromagnetic force and holds plating bath
And a sealing member 4 for preventing the plating solution from leaking downward.
【００１５】本発明では、めっき浴槽１の形状は、特に
限定するものではないが、図１に示すように、鋼板通過
部近傍の両側で下側に突き出した突出部とするのが好ま
しく、その突出部のほぼ中央部を鋼板が通過する。この
突出部は、鋼板幅方向に長い長方形通路で、この通路内
の鋼板を挟んで両側に補助浴槽からめっき液が供給され
る。また、突出部の底部にはスリット状の開口部３が設
けてあり、鋼板は下方から開口部３を通ってめっき浴槽
内に侵入する。また、めっき浴槽底部の開口部３の形状
は被めっき材である鋼板が通過可能であればよく、特に
限定するものではない。また、開口部３の隙間は可能な
限り狭い方がめっき浴の漏洩量を抑制できるので好まし
いが、鋼板の形状によって制約され、10〜50mmが好適で
ある。In the present invention, the shape of the plating bath 1 is not particularly limited. However, as shown in FIG. The steel plate passes through almost the center of the protrusion. The protruding portion is a rectangular passage that is long in the width direction of the steel sheet, and a plating solution is supplied from both sides of the steel sheet in the passage from the auxiliary bath. Further, a slit-shaped opening 3 is provided at the bottom of the protruding portion, and the steel sheet enters the plating bath through the opening 3 from below. The shape of the opening 3 at the bottom of the plating bath is not particularly limited as long as the steel plate as the material to be plated can pass through. Further, it is preferable that the gap between the openings 3 is as narrow as possible because the amount of leakage of the plating bath can be suppressed. However, it is limited by the shape of the steel sheet, and is preferably 10 to 50 mm.
【００１６】また、本発明の電磁シール装置２として
は、開口部３でめっき浴を保持できるものであればよ
く、従来公知の電磁力発生装置がすべて適用できるが、
めっき浴槽１の底部、鋼板を挟んで開口部３の両側に磁
場印加手段２ａ、２ａが所定の間隔をあけて設けられ、
水平磁場あるいは移動磁場を発生させるのが好ましい。
めっき浴槽内のめっき浴は、この磁場とめっき浴中に流
れる誘導電流の相互作用による電磁力により、開口部３
から下方へ漏れることなくめっき浴槽内に保持される。As the electromagnetic sealing device 2 of the present invention, any device can be used as long as it can hold the plating bath in the opening 3, and all conventionally known electromagnetic force generating devices can be applied.
Magnetic field applying means 2a, 2a are provided at predetermined intervals on the bottom of the plating bath 1 and on both sides of the opening 3 with the steel plate interposed therebetween.
Preferably, a horizontal magnetic field or a moving magnetic field is generated.
The plating bath in the plating bath is opened by the electromagnetic force due to the interaction between the magnetic field and the induced current flowing in the plating bath.
It is held in the plating bath without leaking from the bottom.
【００１７】水平磁場の印加装置としては、高周波によ
る電磁力発生装置（高周波電磁印加装置）が好適であ
る。この高周波電磁印加装置は、周波数１〜10kHz の範
囲が好ましい。また、この水平磁場に代えて、移動磁場
印加装置を設けてもよい。移動磁場印加装置としては、
周波数10〜1000Hzの範囲が好ましい。As a device for applying a horizontal magnetic field, a high-frequency electromagnetic force generator (high-frequency electromagnetic application device) is preferable. This high-frequency electromagnetic application device preferably has a frequency in the range of 1 to 10 kHz. Further, a moving magnetic field applying device may be provided instead of the horizontal magnetic field. As a moving magnetic field applying device,
A frequency range of 10 to 1000 Hz is preferred.
【００１８】本発明のシール部材４は、開口部３直下で
鋼板Ｓの表面および裏面に対向して、かつ油圧シリンダ
あるいは空圧シリンダ等の移動装置５により接離可能と
される。このシール部材を鋼板の表、裏面に接触させ、
漏れためっき液が下方の設備に付着するのを防止する。The seal member 4 of the present invention is opposed to the front and back surfaces of the steel sheet S immediately below the opening 3 and can be brought into and out of contact with a moving device 5 such as a hydraulic cylinder or a pneumatic cylinder. This sealing member is brought into contact with the front and back of the steel plate,
Prevents leaked plating solution from adhering to equipment below.
【００１９】一般に、めっき浴槽の底部開口部からめっ
き浴が漏れた場合、大部分は走行する鋼板に沿って下方
に落下する。そのため、鋼板に沿って落下しためっき液
はシール部材間に一旦保持され、随時鋼板に付着し、直
ちに走行する鋼板によって上方へ引き上げられる。この
ようなことから、シール材の形状は走行する鋼板に接触
可能であればよく、特に限定するものではない。また、
シール部材は、シール部材間に保持しためっき液が下方
に漏洩しない程度、例えば鋼板との間に２mm以下の隙間
をあけて非接触としても何ら問題はない。また、鋼板に
対してシール部材を接触させる移動機構としては、油圧
シリンダ、空圧シリンダ等の移動装置が考えられるが、
本発明では特に限定するものではない。Generally, when the plating bath leaks from the bottom opening of the plating bath, most of the falling falls along the running steel plate. Therefore, the plating solution that has fallen along the steel sheet is temporarily held between the seal members, adheres to the steel sheet as needed, and is immediately pulled upward by the running steel sheet. For this reason, the shape of the sealing material is not particularly limited as long as it can contact the traveling steel plate. Also,
There is no problem even if the sealing member is not contacted with a gap of 2 mm or less between the sealing member and the steel plate, for example, so that the plating solution held between the sealing members does not leak downward. Further, as a moving mechanism for bringing the seal member into contact with the steel plate, a moving device such as a hydraulic cylinder or a pneumatic cylinder can be considered.
The present invention is not particularly limited.
【００２０】また、シール部材の材質としては、耐溶融
金属侵食性及び耐熱性について良好であるものが好まし
く、炭化物、酸化物、窒化物、珪化物、硼化物等のセラ
ミッックス、あるいは表面に耐溶融金属侵食性の良好な
材料（例えばWC−Co等のサーメット溶射等）を被覆した
ものを用いることができる。さらに、セラミッック繊維
を用いたフェルト状のもの（例えばカオウール、ガラス
ウール等）も使用することができる。The sealing member is preferably made of a material having good resistance to molten metal erosion and heat resistance, such as ceramics such as carbides, oxides, nitrides, silicides, borides, etc. A material coated with a material having good metal erosion properties (for example, cermet spraying of WC-Co or the like) can be used. Furthermore, felt-like materials using ceramic fibers (for example, kao wool, glass wool, etc.) can also be used.
【００２１】シール部材４として耐熱ベルト41を使用す
ることが好ましい。耐熱ベルトを用いた例を図１に示
す。耐熱ベルトは回転可能なロール42を介して支持され
ている。耐熱ベルト41は、支持ロールを含め、シール部
材の移動装置５により鋼板に接離可能に配設されてい
る。耐熱ベルト41は、鋼板の表、裏面にそれぞれ対向し
て一対配設される。また、ベルト支持用ロールは非駆動
で、走行する鋼板によって回転する機構であっても、ま
た、独立して駆動する機構であってもよい。A heat-resistant belt 41 is used as the seal member 4 .
Preferably . FIG. 1 shows an example using a heat-resistant belt. The heat-resistant belt is supported via a rotatable roll 42. The heat-resistant belt 41, including the support roll, is disposed so as to be able to contact and separate from the steel plate by the moving device 5 for the seal member. The heat-resistant belts 41 are provided as a pair facing each of the front and back surfaces of the steel plate. Further, the belt supporting roll may be a mechanism that is not driven and rotates by a running steel plate, or may be a mechanism that is driven independently.
【００２２】めっき浴槽底部の開口部から漏れ出しため
っき浴は、前記耐熱ベルト間に保持され、一部は走行す
る鋼板によって引き上げられてめっき浴槽外に持ち出さ
れ、残部は耐熱ベルトに付着する。耐熱ベルトにはスク
レーパー等のめっき液掻きとり装置43が設置されている
ことが好ましく、耐熱ベルトに付着しためっき液を前記
めっき液掻きとり装置43にて掻きとり、めっき液を回収
する。掻きとっためっき液の回収方法は、特に限定する
ものではないが、めっき液回収容器44にて回収する方
法、めっき液を吸引する方法等がある。さらに、めっき
液回収のために、めっき液が飛散しないようにめっき液
回収用フードを設置するのが好ましい。The plating bath which has leaked from the opening at the bottom of the plating bath is held between the heat-resistant belts, a part of which is lifted up by the running steel sheet and taken out of the plating bath, and the remainder adheres to the heat-resistant belt. The heat-resistant belt is preferably provided with a plating solution scraping device 43 such as a scraper. The plating solution adhered to the heat-resistant belt is scraped by the plating solution scraping device 43 to collect the plating solution. The method of collecting the scraped plating solution is not particularly limited, and includes a method of collecting the plating solution in the plating solution collection container 44, a method of sucking the plating solution, and the like. Further, in order to collect the plating solution, it is preferable to install a plating solution collecting hood so that the plating solution is not scattered.
【００２３】また、溶融金属めっき浴槽の開口部直下
に、ガスシール装置を設置してもよい。めっき浴槽内に
めっき液を供給した際、漏れ出しためっき液を吹き飛ば
すことで開口部下方の設備の汚染を防止する。ガスシー
ル装置は、鋼板表面および裏面にそれぞれ対向して一対
配設する。ガスシール装置を付設した溶融金属めっき装
置の１例を図２に示す。ガスシール装置45の形状および
機構は特に限定するものではないが、例えばブロアー46
から吹き込まれたガスは、配管47を通じ、鋼板表裏面の
ガス吹付け装置48から鋼板Ｓに吹付けられ、漏洩しため
っき液を吹き飛ばす。ガスの吹き付け方向は、走行する
鋼板面に対し仰角方向とするのが好ましい。吹き飛ばさ
れためっき液は、ガスシール装置近傍に設置されためっ
き液回収容器44あるいはめっき液を吸引することで回収
することができる。また、吹き付けるガス流量およびガ
ス圧はめっき浴を吹き飛ばすことが可能であれば特に限
定するものではないが、吹付けガスによる鋼板の振動を
極力抑制するために、ガス流量として10〜500Nm3/min、
ガス圧として50〜500mmAq であれば好ましい。使用する
ガスは鋼板を酸化させなければ特に限定するものではな
いが、窒素、水素、アルゴンおよびその混合ガスを使用
することができる。また、加熱したガスを使用しても問
題はない。Further, a gas sealing device may be provided immediately below the opening of the hot-dip plating bath. When the plating solution is supplied into the plating bath, the leaking plating solution is blown off to prevent contamination of equipment below the opening. The gas seal device is provided in a pair facing the front and back surfaces of the steel plate. FIG. 2 shows an example of a molten metal plating apparatus provided with a gas sealing device. Although the shape and mechanism of the gas seal device 45 are not particularly limited, for example, a blower 46
Is blown from the gas spraying device 48 on the front and back surfaces of the steel sheet to the steel sheet S through the pipe 47 to blow off the leaked plating solution. It is preferable that the direction of gas blowing be an elevation direction with respect to the running steel sheet surface. The blown-off plating solution can be collected by sucking the plating solution collecting container 44 or the plating solution installed near the gas sealing device. The gas flow rate and gas pressure to be sprayed are not particularly limited as long as the plating bath can be blown off.However, in order to minimize vibration of the steel sheet due to the spray gas, the gas flow rate is 10 to 500 Nm 3 / min. ,
It is preferable that the gas pressure be 50 to 500 mmAq. The gas to be used is not particularly limited as long as the steel sheet is not oxidized, but nitrogen, hydrogen, argon and a mixed gas thereof can be used. There is no problem even if a heated gas is used.
【００２４】また、ガスシール装置の他の例を図３およ
び図４に示す。図３に示すガスシール装置は、図２に示
したガスシール装置より上方の位置に仕切板49を設けた
ものである。これにより吹き飛ばされためっき液が過度
に飛散することもなく効率よく回収することができる。
図４に示すガスシール装置は、鋼板表裏面に対し垂直方
向に複数のガス吹付け装置48を設けたものである。これ
により、漏洩しためっき液を吹き飛ばすだけでなく、鋼
板に対しガスダンパの役割をはたすため、吹付ガスによ
る鋼板振動がほとんどない。また、上記したガスシール
装置はシール部材と併用してもよい。 FIGS. 3 and 4 show another example of the gas sealing device. Gas sealing apparatus shown in FIG. 3, is provided with a partition plate 49 to a position above the gas seal device shown in FIG. As a result, the plating solution that has been blown off can be efficiently collected without being excessively scattered.
The gas sealing device shown in FIG. 4 is provided with a plurality of gas blowing devices 48 in a direction perpendicular to the front and back surfaces of the steel plate. This not only blows out the leaked plating solution but also serves as a gas damper for the steel sheet, so that there is almost no vibration of the steel sheet due to the blowing gas. Also mentioned above gas seal
The device may be used in combination with a sealing member.
【００２５】本発明の溶融金属めっき装置の入側には、
従来装置と同様に鋼板支持装置30が配設される。この鋼
板支持装置30は、非酸化性あるいは還元性雰囲気の焼鈍
炉内で焼鈍した鋼板を酸化させることなくめっき浴槽ま
で導く。焼鈍炉で焼鈍された鋼板Ｓはデフレクタロール
33によって鉛直方向に方向転換され、サポートロール32
で反りを矯正され、ガイドロール31で振動を抑制され
る。次いで、鋼板Ｓは溶融金属めっき装置に導かれ、連
続的にめっきを施される。On the entry side of the hot-dip metal plating apparatus of the present invention,
A steel plate supporting device 30 is provided as in the conventional device. The steel sheet support device 30 guides the steel sheet annealed in an annealing furnace in a non-oxidizing or reducing atmosphere to a plating bath without being oxidized. The steel sheet S annealed in the annealing furnace is a deflector roll
The support roll 32 is turned in the vertical direction by 33
And the guide roll 31 suppresses the vibration. Next, the steel sheet S is guided to a hot-dip metal plating apparatus, and is continuously plated.
【００２６】本発明の溶融金属めっき装置の出側には、
通常、付着量調整装置20が付設される。付着量調整装置
20は、鋼板に過剰に付着しためっき液を絞りとるための
もので、高圧ガスを吹き付けるガスワイピングノズルを
用いるのが好適である。溶融金属めっき浴槽１には、補
助浴槽13を付設するのが好ましい。補助浴槽13は、溶融
金属めっき浴槽へのめっき液の供給あるいはめっき浴槽
からのめっき液の排出を容易にするために、補助浴槽の
設置位置は可能な限りめっき浴槽に隣接するのが好まし
い。12はめっき浴槽と補助浴槽とを連結する密閉型のめ
っき液供給通路であり、めっき開始時めっき浴槽内へめ
っき液を連続的に供給する。11はめっき操業中、めっき
浴槽から排出された余剰のめっき液を移送するためのめ
っき液排出通路であり、めっき液を補助浴槽へ導くため
の通路である。また、めっき終了時、めっき液排出通路
から排出できずめっき浴槽内に残存しためっき液の一部
は、めっき液供給通路の密閉を解除し、めっき液供給通
路からめっき浴槽外へ排出し、残部は連続的に搬送され
る鋼板に付着、持ち出しすることで除去する。On the exit side of the hot-dip metal plating apparatus of the present invention,
Usually, an adhesion amount adjusting device 20 is provided. Adhesion amount adjustment device
Numeral 20 is for squeezing out the plating solution excessively attached to the steel sheet, and it is preferable to use a gas wiping nozzle for blowing high-pressure gas. It is preferable that an auxiliary bath 13 is attached to the molten metal plating bath 1. In order to facilitate the supply of the plating solution to the molten metal plating bath or the drainage of the plating solution from the plating bath, the auxiliary bath 13 is preferably located as close to the plating bath as possible. Reference numeral 12 denotes a sealed plating solution supply passage connecting the plating bath and the auxiliary bath, and continuously supplies the plating solution into the plating bath at the start of plating. Reference numeral 11 denotes a plating solution discharge passage for transferring excess plating solution discharged from the plating bath during the plating operation, and a passage for guiding the plating solution to the auxiliary bath. Also, at the end of plating, part of the plating solution that could not be discharged from the plating solution discharge passage and remained in the plating bath was released from the plating solution supply passage by releasing the sealing of the plating solution supply passage. Is removed by attaching and taking it out to a continuously conveyed steel plate.
【００２７】なお、補助浴槽からめっき浴槽へのめっき
液の供給方法及びめっき浴槽から補助浴槽へのめっき液
の排出方法は特に限定するものではないが、例えば図１
および図２に示すようにめっき液供給通路側にポンプＰ
を設けてめっき浴槽下部へ供給するものがよい。また、
めっき液はオーバーフローにてめっき浴槽上部から排出
され、補助浴槽まで重力で落下させて移送する方法があ
る。The method of supplying the plating solution from the auxiliary bath to the plating bath and the method of discharging the plating solution from the plating bath to the auxiliary bath are not particularly limited.
And the pump P to the plating liquid supply passage side as shown in FIG. 2
It is preferable to supply the plating bath to the lower part of the plating bath. Also,
There is a method in which the plating solution is discharged from the upper portion of the plating bath by overflow, dropped by gravity to the auxiliary bath, and transferred.
【００２８】次に、上記した装置を用いて、めっき操業
を開始およびめっき操業を終了する鋼板の溶融金属めっ
き方法について説明する。まず、めっきを開始する場合
を説明する。鋼板を所定の通板速度で走行させ、シール
部材を所定位置まで鋼板に近接または接触させる。な
お、シール部材としては回転可能なロールで支持された
耐熱ベルトとすることが好ましい。ついで、めっき浴槽
内に磁場を印加させた後、めっき浴槽内にめっき浴を供
給しめっき浴を保持する。この時、漏れためっき浴はシ
ール部材間に保持され、走行する鋼板に付着することで
系外へ持ち出される。この結果、開口部下方の装置へめ
っき浴が付着するのを防止することができる。電磁力の
作用が充分となりめっき浴槽内のめっき浴が電磁力の作
用により保持され、かつ前記シール部材間にめっき液が
ない状態になった時点でシール部材を開放し、鋼板との
接触を解除する。Next, a description will be given of a method for hot-dip plating of a steel sheet using the above-described apparatus to start and end the plating operation. First, a case where plating is started will be described. The steel sheet is run at a predetermined passing speed, and the seal member is brought close to or in contact with the steel sheet to a predetermined position. What
The seal member was supported by a rotatable roll.
It is preferable to use a heat-resistant belt. Next, after applying a magnetic field to the plating bath, the plating bath is supplied into the plating bath and held. At this time, the leaked plating bath is held between the seal members and is taken out of the system by attaching to the running steel plate. As a result, it is the this to prevent the plating bath to the device of the lower opening is attached. When the action of the electromagnetic force becomes sufficient and the plating bath in the plating bath is held by the action of the electromagnetic force, and when there is no plating solution between the seal members, the seal member is opened and the contact with the steel sheet is released. I do.
【００２９】また、シール部材を鋼板に近接又は接触さ
せる代わりに、鋼板表面にガスを吹きつけ、漏洩しため
っき液を吹き飛ばしてもよい。ガスの吹き付け方向は、
鋼板進行方向に速度成分を有するのが好ましい。このガ
ス吹き付けは、シール部材と併用してもよい。つぎに、
めっきを終了する場合について説明する。Instead of bringing the seal member close to or in contact with the steel sheet, a gas may be blown on the steel sheet surface to blow off the leaked plating solution. Gas blowing direction is
It is preferable to have a velocity component in the traveling direction of the steel sheet. This gas blowing may be used together with the sealing member. Next,
A case where plating is finished will be described.
【００３０】めっき操業を継続している状態で、シール
部材を所定位置まで鋼板表裏に近接させ、めっき浴槽へ
のめっき液の供給を停止する。ガスワイピング装置を停
止してめっき浴槽内のめっき液を鋼板に付着させること
でめっき浴槽内を空にするか、あるいはめっき液供給通
路を介して補助浴槽に移送することでめっき浴槽内を空
にする。めっき浴槽内のめっき液がなくなった時点で磁
場印加装置を停止し、鋼板を停止させると共にシール部
材を鋼板から離脱させめっき操業を終了する。With the plating operation being continued, the seal member is brought close to the front and back of the steel sheet to a predetermined position, and the supply of the plating solution to the plating bath is stopped. Stop the gas wiping unit and empty the plating bath by attaching the plating solution in the plating bath to the steel plate, or empty the plating bath by transferring it to the auxiliary bath through the plating solution supply passage. I do. When the plating bath in the plating bath runs out, the magnetic field application device is stopped, the steel plate is stopped, and the sealing member is detached from the steel plate to finish the plating operation.
【００３１】このような方法により、めっき開始あるい
はめっき終了時の非定常状態に、たとえめっき液が漏れ
ても、めっき浴槽下方の装置をめっき液で汚染すること
は防止できる。By such a method, it is possible to prevent the apparatus below the plating bath from being contaminated with the plating solution even if the plating solution leaks in an unsteady state at the start or end of the plating.
【００３２】[0032]
【００３３】[0033]
【００３４】[0034]
【００３５】[0035]
【実施例】 （実施例１） 図１に示す溶融金属めっき装置を用いてめっき操業を行
った。 EXAMPLES (Example 1) was subjected to plating operations using molten metal plating apparatus shown in FIG.
【００３６】非駆動ロール42により支持された耐熱ベル
ト41を、エアシリンダからなる移動装置５により鋼板Ｓ
に接触可能に配設した。耐熱ベルトの幅は、前記開口部
幅よりも長く2400mmとし、ベルトの材質はカオウールを
使用した。耐熱ベルト41にはスクレーパ（めっき液掻取
り装置）43が取り付けてあり、耐熱ベルト41に付着した
めっき液を掻き落とし、めっき浴回収容器44に回収でき
るようになっている。The heat-resistant belt 41 supported by the non-driving roll 42 is moved to the steel plate S by the moving device 5 comprising an air cylinder.
It was arranged so that it could contact. The width of the heat-resistant belt was 2400 mm longer than the width of the opening, and kao wool was used as the material of the belt. A scraper (plating solution scraping device) 43 is attached to the heat-resistant belt 41 so that the plating solution attached to the heat-resistant belt 41 can be scraped off and collected in a plating bath collection container 44.
【００３７】以下に操業条件を示す。 鋼種：極低炭素鋼 鋼板サイズ：幅 1200mm、厚み 1.0mm 鋼板速度： 130mpm めっき液組成：Zn＋ 0.2％Al めっき浴温： 475℃ めっき直前の鋼板温度： 480℃ めっき浴供給量： 400 l/min めっき浴槽内のめっき浴最大高さ： 200mm 付着量：片面45g/m 2 （Ｎ 2 ガス使用） 磁場印加装置の交流電流周波数：２kHz 磁場印加装置コア間の磁束密度： 0.5Ｔ めっき浴槽１内にめっき液を供給しない状態で、鋼板Ｓ
を 50mpmで走行させるとともに耐熱ベルト41を鋼板表裏
に接触させ、電磁シール装置２を作動して磁場を発生さ
せた。次いで、補助浴槽13内のめっき液を徐々にポンプ
Ｐにてめっき浴槽１内に供給し、所定の供給量に調整し
た。付着量調整装置20を作動させるとともに、鋼板速度
を所定の速度まで増加させた。耐熱ベルト41に付着した
めっき液はめっき液掻取り装置（スクレーパ）で掻きと
ってめっき液回収容器44で回収した。最後にめっき液の
漏洩がおさまったら、耐熱ベルト41を鋼板Ｓから離脱さ
せ、めっき操業を開始した。The operating conditions are shown below. Steel type: Ultra- low carbon steel sheet Size: 1200mm wide, 1.0mm thick Steel sheet speed: 130mpm Plating solution composition: Zn + 0.2% Al plating bath temperature: 475 ° C Steel plate temperature immediately before plating : 480 ° C Plating bath supply: 400 l / min Maximum height of plating bath in plating bath: 200 mm Adhesion amount: 45 g / m 2 on one side ( using N 2 gas) AC current frequency of magnetic field applying device : 2 kHz Magnetic flux density between cores of magnetic field applying device: in 0.5T plating bath 1 In the state where the plating solution is not supplied, the steel sheet S
Was run at 50 mpm and the heat-resistant belt 41 was brought into contact with the front and back of the steel plate, and the electromagnetic sealing device 2 was operated to generate a magnetic field. Next, the plating solution in the auxiliary bath 13 was gradually supplied into the plating bath 1 by the pump P, and adjusted to a predetermined supply amount. The steel sheet speed was increased to a predetermined speed while the adhesion amount adjusting device 20 was operated. The plating solution adhered to the heat-resistant belt 41 was scraped off by a plating solution scraping device (scraper) and collected in a plating solution collection container 44. Finally, when the leakage of the plating solution stopped, the heat-resistant belt 41 was separated from the steel sheet S, and the plating operation was started.
【００３８】その後、めっき操業を継続し、所定の量を
処理した。次いで、めっき操業を継続している状態で、
耐熱ベルト41を鋼板表裏に接触させ、めっき浴槽１への
めっき浴の供給を停止した。付着量調整装置20を停止し
てめっき浴槽１内のめっき液をめっき液排出通路11を介
して補助浴槽に移送し、めっき浴槽１内のめっき液がな
くなった時点で電磁シール装置２をを停止し、鋼板Ｓを
停止させると共に耐熱ベルト41を鋼板Ｓから離脱させめ
っき操業を終了した。Thereafter, the plating operation was continued and a predetermined amount was processed. Next, while the plating operation is continuing,
The heat-resistant belt 41 was brought into contact with the front and back of the steel sheet, and the supply of the plating bath to the plating bath 1 was stopped. The coating amount adjusting device 20 is stopped, the plating solution in the plating bath 1 is transferred to the auxiliary bath through the plating solution discharge passage 11, and the electromagnetic sealing device 2 is stopped when the plating solution in the plating bath 1 runs out. Then, the steel sheet S was stopped, and the heat-resistant belt 41 was separated from the steel sheet S, thereby completing the plating operation.
【００３９】以上のようなめっき開始および終了方法を
実施することにより、めっき浴槽底部の開口部から漏れ
出しためっき浴が開口部直下の鋼板支持装置30を汚染す
ることなく安定かつ安全にめっき開始および終了するこ
とができた。 （実施例２） 図２に示す溶融金属めっき装置を用いてめっき操業を行
った。By carrying out the plating start and end methods as described above, the plating bath leaking from the opening at the bottom of the plating bath can stably and safely start plating without contaminating the steel plate supporting device 30 immediately below the opening. And could finish. It was plated operation using molten metal plating apparatus shown in (Example 2) Figure 2.
【００４０】めっき浴槽１の底部開口部３の直下で鋼板
支持装置30より上方の位置には鋼板Ｓ表裏に対向して、
漏洩しためっき液を吹き飛ばすためのガスシール装置45
が設置され、吹き飛ばしためっき液はめっき液回収容器
44内に回収する。鋼板表裏に対向したガスシール装置間
距離は20mmとした。ガス流量は 100Nm3/min 、ガス圧は
250mmAqとし、窒素ガスを用いた。At a position just below the bottom opening 3 of the plating bath 1 and above the steel plate supporting device 30, the steel plate S is opposed to the front and back of the steel plate S.
Gas sealing device 45 to blow off leaked plating solution
Is installed, and the plating solution that has been blown away is a plating solution collection container.
Collect in 44. The distance between the gas seal devices facing the front and back of the steel sheet was set to 20 mm. Gas flow rate is 100Nm 3 / min, gas pressure is
The pressure was set to 250 mmAq, and nitrogen gas was used.
【００４１】操業条件は実施例１と同条件とした。めっ
き浴槽内にめっき浴を供給しない状態で、鋼板Ｓを 50m
pmで走行させるとともにガスシール装置45を作動させ、
電磁シール装置２を作動して磁場を発生させ、次いで、
補助浴槽13内のめっき液を徐々にポンプＰにてめっき浴
槽１内に供給し、所定の供給量に調整した。付着量調整
装置20を作動させ、鋼板速度を所定の速度まで増加させ
た。漏洩しためっき液は吹き飛ばしてめっき浴回収容器
44で回収する。最後にめっき液の漏洩がおさまったら、
ガスシール装置45を停止させ、めっき操業を開始した。The operating conditions were the same as in Example 1. In a state where the plating bath is not supplied into the plating bath, the steel sheet S is
Run at pm and operate the gas seal device 45,
Activate the electromagnetic sealing device 2 to generate a magnetic field,
The plating solution in the auxiliary bath 13 was gradually supplied into the plating bath 1 by the pump P, and adjusted to a predetermined supply amount. The adhesion amount adjusting device 20 was operated to increase the steel sheet speed to a predetermined speed. Leakage of plating solution is blown off and plating bath collection container
Collect at 44. Finally, if the plating solution has stopped leaking,
The gas sealing device 45 was stopped, and the plating operation was started.
【００４２】所定量の鋼板にめっきを施したのち、めっ
き操業を継続している状態で、ガスシール装置45を作動
させ、めっき浴槽１へのめっき液の供給を停止した。付
着量調整装置20を停止してめっき浴槽１内のめっき液を
めっき液供給通路12を介して補助浴槽13に移送し、めっ
き浴槽１内のめっき液がなくなった時点で電磁シール装
置２を停止し、鋼板Ｓを停止させると共にガスシール装
置45を停止させめっき操業を終了した。After plating a predetermined amount of the steel sheet, the gas sealing device 45 was operated while the plating operation was continued, and the supply of the plating solution to the plating bath 1 was stopped. The coating amount adjusting device 20 is stopped, the plating solution in the plating bath 1 is transferred to the auxiliary bath 13 via the plating solution supply passage 12, and the electromagnetic sealing device 2 is stopped when the plating solution in the plating bath 1 runs out. Then, the steel plate S was stopped, and the gas sealing device 45 was stopped to terminate the plating operation.
【００４３】以上のようなめっき開始および終了方法を
実施することにより、めっき浴槽底部の開口部３から漏
れ出しためっき液が開口部直下の鋼板支持装置30を汚染
することなく安定かつ安全にめっき開始および終了する
ことができた。なお、以上の説明においては、鋼板への
溶融亜鉛めっきの例についてのみ述べたが、これは本発
明をZn、Al、Pb、Sb、Mg等の溶融金属およびその合金な
どの他の溶融金属めっきにも適用できることは言うまで
もない。また付着量を調整した後、加熱処理して合金化
することを妨げるものではない。By performing the plating start and end methods as described above, the plating solution leaking from the opening 3 at the bottom of the plating bath can stably and safely perform plating without contaminating the steel plate supporting device 30 immediately below the opening. Could start and end. In the above description, only an example of hot-dip galvanizing on a steel sheet has been described.However, the present invention relates to other hot-dip galvanizing methods such as Zn, Al, Pb, Sb, Mg, and other molten metals and alloys thereof. Needless to say, it can also be applied to. Further, it does not prevent the alloying by the heat treatment after the adjustment of the adhesion amount.
【００４４】[0044]
【発明の効果】本発明によれば、めっき浴槽底部の開口
部から鋼板を引き上げてめっきを施す溶融金属めっき方
法において、めっき開始および終了時のめっき液の漏洩
による鋼板支持装置等の開口部直下に位置する設備の汚
染を防止することができ、安定しためっき操業を行うこ
とができ、保守点検作業が軽減されるという効果が期待
できる。According to the present invention, in a hot-dip metal plating method in which a steel sheet is pulled up from an opening at the bottom of a plating bath to perform plating, the plating solution leaks at the start and end of plating immediately below an opening of a steel sheet support device or the like. Therefore, it is possible to prevent contamination of the facilities located in the area, to perform a stable plating operation, and to reduce maintenance work.
【図１】本発明装置の１実施例を示す概略断面図であ
る。FIG. 1 is a schematic sectional view showing one embodiment of the device of the present invention.
【図２】本発明装置の１実施例を示す概略断面図であ
る。FIG. 2 is a schematic sectional view showing one embodiment of the device of the present invention.
【図３】本発明装置に用いて好適なガスシール装置の１
例を示す概略断面図である。 FIG. 3 shows a preferred gas sealing device used in the device of the present invention .
It is a schematic sectional drawing which shows an example.
【図４】本発明装置に用いて好適なガスシール装置の１
例を示す概略断面図である。FIG. 4 shows a preferred gas seal device used in the device of the present invention.
It is a schematic sectional drawing which shows an example.
【図５】従来の溶融金属めっき装置の１例を示す概念図
である。 FIG. 5 is a conceptual diagram showing an example of a conventional hot-dip metal plating apparatus.
It is.
１ めっき浴槽 ２ 電磁シール装置 ２ａ 磁場印加手段 ３ 開口部 ４ シール部材 ５ 移動装置 ６ 溶融金属めっき装置 ７ めっき浴 10 めっき液供給装置 11 めっき液排出通路 12 めっき液供給通路 13 補助浴槽 15 配管切替装置 20 付着量調整装置 30 鋼板支持装置 31 ガイドロール 32 サポートロール 33 デフレクタロール 41 耐熱ベルト 42 ロール 43 めっき液掻取り装置 44 めっき液回収容器 45 ガスシール装置 46 ブロア 47 配管 48 ガス吹付け装置 49 仕切板 50 焼鈍炉 Ｓ 鋼板 Ｐ ポンプ REFERENCE SIGNS LIST 1 plating bath 2 electromagnetic sealing device 2 a magnetic field applying means 3 opening 4 sealing member 5 moving device 6 molten metal plating device 7 plating bath 10 plating solution supply device 11 plating solution discharge passage 12 plating solution supply passage 13 auxiliary bath 15 piping switching device 20 Adhesion amount adjustment device 30 Steel plate support device 31 Guide roll 32 Support roll 33 Deflector roll 41 Heat resistant belt 42 Roll 43 Plating solution scraping device 44 Plating solution collection container 45 Gas seal device 46 Blower 47 Piping 48 Gas spraying device 49 Partition plate 50 Annealing furnace S Steel plate P Pump
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松川 敏胤 千葉県千葉市中央区川崎町１番地 川崎 製鉄株式会社 千葉製鉄所内 (72)発明者 三原 一正 広島県広島市西区観音新町４丁目６番22 号 三菱重工業株式会社 広島製作所内 (72)発明者 宇ノ木 賢一 広島県広島市西区観音新町４丁目６番22 号 三菱重工業株式会社 広島研究所内 (56)参考文献 特開 平８−337859（ＪＰ，Ａ) 特開 平８−337857（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C23C 2/00 - 2/40 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshitane Matsukawa 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Iron & Steel Co., Ltd. Chiba Works (72) Inventor Kazumasa Mihara 4--6 Kannon Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima No. 22 Mitsubishi Heavy Industries, Ltd. Hiroshima Works (72) Inventor Kenichi Unoki 4-62 Kanon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Hiroshima Research Laboratory (56) References JP-A-8-337859 (JP, A) JP-A-8-337857 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C23C 2/00-2/40
Claims (9)
上方に引き上げて該鋼板にめっきを施すめっき浴槽と、
該めっき浴槽内のめっき浴に磁場を印加して該めっき浴
を保持する電磁シール装置とからなる溶融金属めっき装
置において、前記開口部直下に、溶融金属の下方への漏
洩を抑止する回転可能なロールで支持された耐熱ベルト
からなる一対のシール部材を、前記鋼板表面および裏面
にそれぞれ対向し、かつ接離可能に配設したことを特徴
とする鋼板の溶融金属めっき装置。1. A plating bath for injecting a steel plate from an opening provided in a bottom portion, pulling the steel plate upward, and plating the steel plate;
In the molten metal plating apparatus comprising the electromagnetic sealing device which applies a magnetic field to the plating bath in the plating bath for holding the plating bath, directly under the opening, rotatable to prevent leakage of the downward molten metal Heat-resistant belt supported by roll
And a pair of seal members comprising: a pair of seal members each of which is opposed to the front surface and the back surface of the steel plate and is detachably provided.
上方に引き上げて該鋼板にめっきを施すめっき浴槽と、
該めっき浴槽内のめっき浴に磁場を印加して該めっき浴
を保持する電磁シール装置とからなる溶融金属めっき装
置において、前記開口部直下に、溶融金属の下方への漏
洩を抑止する一対のガスシール装置を、前記鋼板表面お
よび裏面にそれぞれ対向して配設したことを特徴とする
鋼板の溶融金属めっき装置。2. A plating bath for injecting a steel plate through an opening provided in a bottom portion, pulling the steel plate upward, and plating the steel plate;
In a molten metal plating apparatus comprising: a magnetic field applied to a plating bath in the plating bath to hold the plating bath; and a pair of gases for suppressing leakage of the molten metal downward immediately below the opening. A hot-dip metal plating apparatus for a steel sheet, wherein a sealing device is disposed so as to face the front and rear surfaces of the steel sheet, respectively.
上方に引き上げて該鋼板にめっきを施すめっき浴槽と、
該めっき浴槽内のめっき浴に磁場を印加して該めっき浴
を保持する電磁シール装置とからなる溶融金属めっき装
置において、前記開口部直下に、溶融金属の下方への漏
洩を抑止する一対のシール部材を前記鋼板表面および裏
面にそれぞれ対向し、かつ接離可能に配設し、さらに該
シール部材の直下に、溶融金属の下方への漏洩を防止す
る一対のガスシール装置を、前記鋼板表面および裏面に
それぞれ対向して配設したことを特徴とする鋼板の溶融
金属めっき装置。3. A plating bath for injecting a steel plate from an opening provided in a bottom portion, pulling the steel plate upward, and plating the steel plate;
In a molten metal plating apparatus comprising: an electromagnetic sealing device for applying a magnetic field to the plating bath in the plating bath to hold the plating bath, a pair of seals for preventing the molten metal from leaking downward just below the opening. The members are respectively opposed to the front and back surfaces of the steel sheet, and are disposed so as to be able to contact and separate from each other.Further, immediately below the seal member, a pair of gas seal devices for preventing the molten metal from leaking downward, A hot-dip metal plating apparatus for a steel sheet, which is disposed opposite to the back surface.
支持された耐熱ベルトであることを特徴とする請求項３
記載の溶融金属めっき装置。Wherein said sealing member, according to claim 3, characterized in that the heat resistant belt supported by rotatable roll
A hot-dip metal plating apparatus as described in the above.
を特徴とする請求項１または４記載の溶融金属めっき装
置。5. A molten metal plating apparatus according to claim 1 or 4, wherein said roll is arranged to be driven.
を印加して該めっき浴を保持しつつ該溶融金属めっき浴
槽の底部に設けた開口部から鋼板を侵入させ上方に引き
上げてめっきする鋼板の溶融金属めっき方法において、
前記溶融金属めっき浴槽に溶融金属が供給されない状態
でめっきを開始するにあたり、前記開口部直下で前記鋼
板の表面および裏面にそれぞれ対向して一対のシール部
材を所定位置まで近接または接触させつつ、および、鋼
板表裏面に対しガスを吹付けつつ、該鋼板を所定の通板
速度で通板させ、該めっき浴槽に磁場を印加したのち、
溶融金属を供給してめっきを開始することを特徴とする
鋼板の溶融金属めっき方法。6. A steel sheet to be plated by applying a magnetic field to a plating bath in a hot-dip metal bath and holding the bath while injecting a steel plate through an opening provided at the bottom of the hot-dip metal bath and pulling the steel plate upward. In the hot metal plating method of
When plating is started in a state where molten metal is not supplied to the molten metal plating bath, a pair of seal members are brought into close proximity to or in contact with a predetermined position while facing the front and back surfaces of the steel sheet immediately below the opening, respectively. good beauty, while blowing gas against the steel plate front and rear surfaces, the steel plate was to be passing plate at a predetermined sheet passing speed, then a magnetic field is applied to the plating bath,
A molten metal plating method for a steel sheet, comprising supplying a molten metal and starting plating.
を印加して該めっき浴を保持しつつ該溶融金属めっき浴
槽の底部に設けた開口部から鋼板を侵入させ上方に引き
上げてめっきする鋼板の溶融金属めっき方法において、
めっきを終了するにあたり、前記開口部直下で前記鋼板
の表面および裏面にそれぞれ対向して一対のシール部材
を所定位置まで近接または接触させつつ、および、鋼板
表裏面に対しガスを吹付けつつ、該溶融金属めっき浴槽
への溶融金属の供給を停止したのち、該溶融金属めっき
浴槽内の溶融金属を鋼板に付着させるかあるいは該溶融
金属めっき浴槽内の溶融金属を連通した補助浴槽へ移送
して該溶融金属めっき浴槽内を空にし、ついで該溶融金
属めっき浴槽内への磁場印加を停止してめっきを終了す
ることを特徴とする鋼板の溶融金属めっき方法。7. A steel sheet to be plated by applying a magnetic field to a plating bath in a hot-dip metal bath and holding the bath while allowing the steel plate to enter through an opening provided at the bottom of the hot-bath bath and pulling the steel plate upward to perform plating. In the hot metal plating method of
Upon exit the plating, while facing each front and back surfaces of the steel plate is brought close to or in contact with a pair of seal members to a predetermined position directly under the opening, and, while blowing gas against the steel plate front and rear surfaces After the supply of the molten metal to the molten metal plating bath is stopped, the molten metal in the molten metal plating bath is adhered to a steel plate, or the molten metal in the molten metal plating bath is transferred to an auxiliary bath connected to the molten metal plating bath. And dipping the molten metal plating bath, stopping the application of a magnetic field to the molten metal plating bath, and terminating the plating.
を印加して該めっき浴を保持しつつ該溶融金属めっき浴And applying the molten metal plating bath while holding the plating bath.
槽の底部に設けた開口部から鋼板を侵入させ上方に引きThe steel plate enters through the opening at the bottom of the tank and is pulled upward.
上げてめっきする鋼板の溶融金属めっき方法において、In the hot-dip metal plating method of the steel plate to be raised and plated,
前記溶融金属めっき浴槽に溶融金属が供給されない状態State in which molten metal is not supplied to the molten metal plating bath
でめっきを開始するにあたり、前記開口部直下で前記鋼At the start of plating, the steel immediately below the opening
板の表面および裏面にそれぞれ対向して回転可能なローRows rotatable opposite the front and back of the plate
ルで支持された耐熱ベルトからなる一対のシール部材をA pair of seal members consisting of a heat-resistant belt supported by
所定位置まで近接または接触させつつ、および／またWhile approaching or touching a predetermined position, and / or
は、鋼板表裏面に対しガスを吹付けつつ、該鋼板を所定Is to blow the steel sheet to the specified
の通板速度で通板させ、該めっき浴槽に磁場を印加したAnd a magnetic field was applied to the plating bath.
のち、溶融金属を供給してめっきを開始することを特徴After that, plating is started by supplying molten metal
とする鋼板の溶融金属めっき方法。Metal plating method for steel sheet.
を印加して該めっき浴を保持しつつ該溶融金属めっき浴And applying the molten metal plating bath while holding the plating bath.
槽の底部に設けた開口部から鋼板を侵入させ上方に引きThe steel plate enters through the opening at the bottom of the tank and is pulled upward.
上げてめっきする鋼板の溶融金属めっき方法において、In the hot-dip metal plating method of the steel plate to be raised and plated,
めっきを終了するにあたり、前記開口部直下で前記鋼板At the end of plating, the steel sheet just below the opening
の表面および裏面にそれぞれ対向してFacing the front and back of the 回転可能なロールRotatable roll
で支持された耐熱ベルトからなる一対のシール部材を所A pair of sealing members consisting of a heat-resistant belt supported by
定位置まで近接または接触させつつ、および／または、While approaching or touching the home position and / or
鋼板表裏面に対しガスを吹付けつつ、該溶融金属めっきWhile blowing gas on the front and back of the steel sheet,
浴槽への溶融金属の供給を停止したのち、該溶融金属めAfter stopping the supply of the molten metal to the bathtub, the molten metal
っき浴槽内の溶融金属を鋼板に付着させるかあるいは該The molten metal in the bathtub
溶融金属めっき浴槽内の溶融金属を連通した補助浴槽へTo the auxiliary bath with molten metal in the bath
移送して該溶融金属めっき浴槽内を空にし、ついで該溶The molten metal plating bath is emptied and transferred.
融金属めっき浴槽内への磁場印加を停止してめっきを終Terminate plating by stopping the application of a magnetic field to the molten metal plating bath.
了することを特徴とする鋼板の溶融金属めっき方法。A hot-dip metal plating method for a steel sheet.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34969996A JP3311262B2 (en) | 1996-12-27 | 1996-12-27 | Hot-dip metal plating apparatus and hot-dip metal plating method |
| CA002225537A CA2225537C (en) | 1996-12-27 | 1997-12-22 | Hot dip coating apparatus and method |
| DE69707257T DE69707257T2 (en) | 1996-12-27 | 1997-12-23 | Device and method for hot dip coating |
| US08/997,608 US5965210A (en) | 1996-12-27 | 1997-12-23 | Hot dip coating apparatus and method |
| EP97122808A EP0855450B1 (en) | 1996-12-27 | 1997-12-23 | Hot dip coating apparatus and method |
| KR1019970073438A KR19980064606A (en) | 1996-12-27 | 1997-12-24 | Molten Metal Plating Equipment and Molten Metal Plating Methods |
| CNB971297800A CN1138869C (en) | 1996-12-27 | 1997-12-24 | Electroplating apparatus for molten metal and method for electroplating said molten metal |
| AU49339/97A AU729674B2 (en) | 1996-12-27 | 1997-12-24 | Hot dip coating apparatus and method |
| US09/333,884 US6290776B1 (en) | 1996-12-27 | 1999-06-15 | Hot dip coating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34969996A JP3311262B2 (en) | 1996-12-27 | 1996-12-27 | Hot-dip metal plating apparatus and hot-dip metal plating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10195619A JPH10195619A (en) | 1998-07-28 |
| JP3311262B2 true JP3311262B2 (en) | 2002-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34969996A Expired - Fee Related JP3311262B2 (en) | 1996-12-27 | 1996-12-27 | Hot-dip metal plating apparatus and hot-dip metal plating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3311262B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240081A (en) * | 2007-03-28 | 2008-10-09 | Mitsubishi-Hitachi Metals Machinery Inc | Hot dip plating equipment |
| KR101221655B1 (en) * | 2010-08-24 | 2013-01-14 | 현대하이스코 주식회사 | Device for continuous hot-dip coating of steel strips |
-
1996
- 1996-12-27 JP JP34969996A patent/JP3311262B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10195619A (en) | 1998-07-28 |
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