JPS5821024B2 - Method for preventing edge bar coat in continuous melt plating - Google Patents
Method for preventing edge bar coat in continuous melt platingInfo
- Publication number
- JPS5821024B2 JPS5821024B2 JP835576A JP835576A JPS5821024B2 JP S5821024 B2 JPS5821024 B2 JP S5821024B2 JP 835576 A JP835576 A JP 835576A JP 835576 A JP835576 A JP 835576A JP S5821024 B2 JPS5821024 B2 JP S5821024B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- edge
- notch
- steel strip
- gas injection
- 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
Links
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- Coating With Molten Metal (AREA)
Description
【発明の詳細な説明】
本発明はガスワイピング法による鋼帯の連続溶融金属メ
ッキにおいて被覆鋼帯のエツジ部のオーバーコートを防
止する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing overcoating of the edges of a coated steel strip in continuous hot-dip metal plating of a steel strip by a gas wiping method.
ガスワイピング法による鋼帯の連続溶融金属メッキにお
いては、溶融メッキ金属浴を通過して上方に移行する鋼
帯の表裏両面に被覆された溶融メッキ金属を吹拭して所
望付着量に調整するために鋼帯の両面に対向して配置さ
れている気体噴射ノズルは、通常メッキ浴面の上方１０
０〜３００ｍｍの範囲内で銅帯面の溶融メッキ金属の凝
固状態に応じてその高さ、位置を調整してセットされる
が、鋼帯の両面に向って両気体噴射ノズルから噴射され
た気体の気流同志が鋼帯の幅面から外れた位置、すなわ
ち、銅帯のエツジ部附近で互いに衝突して干渉し合い、
エツジ部のオーバーコートの吹拭に有効に作用せず、む
しろ噴射気体同志の干渉によって渦流を誘起し、エツジ
部附近の空気の温度低下を招いて、エツジ部の過剰メッ
キ金属の凝固を早める結果となり、エツジ部にオーバー
コートが発生する原因となり、かかる噴射気体同志の干
渉を除去することが困難であった。In continuous hot-dip metal plating of steel strips using the gas wiping method, the hot-dip plating metal coated on both the front and back sides of the steel strip is blown off as it passes through the hot-dip plating metal bath and moves upward to adjust the coating amount to the desired amount. The gas injection nozzles, which are placed opposite to each other on both sides of the steel strip, are usually placed 10 mm above the surface of the plating bath.
The height and position are adjusted within the range of 0 to 300 mm depending on the solidification state of the hot-dip plated metal on the surface of the copper strip, and the gas is injected from both gas injection nozzles toward both sides of the steel strip. The air currents collide and interfere with each other at a position away from the width of the steel strip, that is, near the edge of the copper strip,
It does not effectively wipe off the overcoat on the edges, but rather induces vortices due to interference between the jetted gases, lowering the temperature of the air near the edges, and accelerating the solidification of the excess plated metal on the edges. This causes an overcoat to occur at the edge portion, and it is difficult to eliminate such interference between the injected gases.
上記の如きエツジ部におけるオーバーコートを防止する
方法としては、従来はエツジ部に適当な”当て物′°を
して過剰のメッキ金属を機械的に削り取るか、あるいは
エツジ部両面にバーナーによる火焔を吹き付け、その熱
により過剰のメッキ金属を融かして下方に吹き流し、オ
ーバーコート金属の盛り上がりを極力少なくするように
していた。Conventionally, methods for preventing overcoat on the edges as described above include applying a suitable "pad" to the edges and mechanically scraping off the excess plated metal, or spraying flames from a burner on both sides of the edges. The excess plating metal was melted and blown downward by the heat, thereby minimizing the amount of bulge in the overcoat metal.
しかしながら、前者のエツジ部の過剰メッキ金属を機械
的に削り取る方法はエツジ部メッキ面の外観を損い、品
質を劣化させる欠点があり、また後者のバーナーにより
吹き流す方法は過剰のメツ主金属を融かす度合にムラを
生じ外観を悪くする欠点があった。However, the former method of mechanically scraping off the excess plated metal on the edges has the disadvantage of damaging the appearance of the edge plated surface and deteriorating the quality, while the latter method of blowing it away with a burner removes the excess main metal. There was a drawback that the degree of melting was uneven, resulting in poor appearance.
更に最近は補助ノズルを設ける方法が数多く提案されて
いるが、これらの方法は補助ノズルの形状、エツジ部に
対する気体の噴射角度、圧力調整などに問題があり、ま
た鋼帯の蛇行に対する追従装置に充分なものがなく、現
実的に完全なものが全くない状態である。Furthermore, many methods have recently been proposed to provide an auxiliary nozzle, but these methods have problems with the shape of the auxiliary nozzle, the gas injection angle with respect to the edge, pressure adjustment, etc., and also have problems with the tracking device for the meandering of the steel strip. It is a state in which there is not enough, and practically nothing is complete.
本発明者らはかかる欠点を除去するために、メッキ浴を
通過し浴融メッキ金属が被覆された銅帯面に向って噴射
される気体の衝突点附近の気体の流れの状態を調査の結
果、エツジ部附近の気体はど気体噴射ノズル中央部に向
って流れていることに着目し、エツジ部附近の気体を吸
引管で吸引することにより、エツジ部附近での噴射気体
の噴射方向と同じ方向に向けての周辺からの冷風の巻き
込みおよび気体同志の干渉を防止できることを見出し本
発明方法を完成した。In order to eliminate such drawbacks, the present inventors investigated the state of the gas flow near the collision point of the gas that passes through the plating bath and is injected toward the surface of the copper strip coated with bath-dip plated metal. Focusing on the fact that the gas near the edge is flowing toward the center of the gas injection nozzle, by sucking the gas near the edge with the suction pipe, the direction of the gas injection near the edge is the same as that of the gas injection nozzle. They discovered that it is possible to prevent the entrainment of cold air from the surrounding area and the interference between gases, and have completed the method of the present invention.
すなわち、本発明は銅帯の連続溶融メッキにおいて、銅
帯の表裏両面に被覆された溶融メッキ金：属を吹拭する
気体噴射ノズル間の両側に、鋼帯の、エツジ部附近の気
体を吸引する吸引管の先端部に上下を切り欠いた切欠部
を有し且つ該切欠部の吸引管側端部の上に干渉防止板を
設けたエツジオーバーコート防止装置を設け、該干渉防
止板の切欠シ部側の各端面を鋼帯の両エツジ部の端面に
それぞれ接触または接近させ且つ該切欠部の両側板の間
に鋼帯の両エツジ部が入り切欠部の位置が気体噴射ノズ
ルの噴射口の下方となる如く調節して、気体噴射ノズル
から噴射した気体が銅帯に衝突する、位置の下方で両エ
ツジ部周辺の気体を吸引することにより鋼帯の両エツジ
部のオーバーコートを防止することを特徴とする連続溶
融メッキにおけるエツジオーバーコート防止方法を提供
するものである。That is, in continuous hot-dip plating of a copper strip, the present invention involves sucking the gas near the edge of the steel strip on both sides between the gas injection nozzles that blow off the hot-dip plated metal coated on both the front and back surfaces of the copper strip. An edge overcoat prevention device is provided, which has a notch with the top and bottom cut out at the tip of the suction tube, and an interference prevention plate is provided on the suction tube side end of the notch, and the edge overcoat prevention device has a cutout in the suction tube side. The end faces of the steel strip are brought into contact with or close to the end faces of both edge parts of the steel strip, and both edge parts of the steel strip are inserted between both side plates of the notch, and the position of the notch is below the injection port of the gas injection nozzle. The gas jetted from the gas injection nozzle collides with the copper strip by sucking the gas around both edges to prevent overcoating of both edges of the steel strip. The present invention provides a method for preventing edge overcoat in continuous hot-dip plating.
以下、図面により本発明に係る連続溶融メッキにおける
エツジオーバーコート防止方法について詳しく説明する
。Hereinafter, the method for preventing edge overcoat in continuous hot-dip plating according to the present invention will be explained in detail with reference to the drawings.
第１図は気体噴射ノズル附近の気体圧力を示す説明図、
第２図は気体噴射ノズル附近の気体の流べれの状態を示
す説明図、第３図は銅帯のエツジオーバーコートの状態
を示す説明図、第４図は本発明力１法を実施するために
使用するエツジオーバーコート防止装置の斜視図、第５
図は本発明方法の実施状態を示す説明図、第６図は本発
明不法における気体噴射ノズル附近の気体の流れの状態
を示す説明図である。Figure 1 is an explanatory diagram showing the gas pressure near the gas injection nozzle;
Fig. 2 is an explanatory diagram showing the state of the gas flow near the gas injection nozzle, Fig. 3 is an explanatory diagram showing the state of the edge overcoat of the copper strip, and Fig. 4 is an explanatory diagram showing the state of the edge overcoat of the copper strip. Perspective view of edge overcoat prevention device used for
FIG. 6 is an explanatory diagram showing the implementation state of the method of the present invention, and FIG. 6 is an explanatory diagram showing the state of gas flow near the gas injection nozzle in the method of the present invention.
図面中、１は鋼帯５の両エツジ部附近の気体を吸引する
ための角管または丸管状の吸引管であり、この吸引管１
の先端部には上下を切り欠いた切欠部２が設けてあり、
他端はブロアー（図示なし）に連通している。In the drawing, reference numeral 1 denotes a square or round suction tube for suctioning the gas near both edges of the steel strip 5;
A notch 2 is provided at the tip of the top and bottom.
The other end communicates with a blower (not shown).
３は切欠部２の吸引管１側端部の上にＬ型のアングルを
／＼型の状態で取り付けた干渉防止板、４は干渉防止板
３の上部に設けたＴ字型をした取付棒、６，６′は気体
噴射ノズル、７゜７′は切欠部２の両側板である。3 is an interference prevention plate with an L-shaped angle attached to the end of the suction tube 1 side of the notch 2 in a /\-shaped state, and 4 is a T-shaped mounting rod provided on the top of the interference prevention plate 3. , 6 and 6' are gas injection nozzles, and 7° and 7' are both side plates of the notch 2.
本発明方法はかかる吸引管１の先端部に切欠部２、干渉
防止板３、取付棒４を設けたエツジオーバーコート防止
装置により連続溶融メッキにおけるエツジオーバーコー
トを防止するのである。The method of the present invention prevents edge overcoat during continuous hot-dip plating using an edge overcoat prevention device that includes a notch 2, an interference prevention plate 3, and a mounting rod 4 at the tip of the suction tube 1.
第１図は連続溶融金属メッキにおいて溶融メッキ金属浴
を通過して上方に移行する鋼帯５の表裏両面に被覆され
た溶融メッキ金属を吹拭するために鋼帯５の両面に対向
してそれぞれ配置されている気体噴射ノズル６．６′附
近の気体の圧力を水柱式Ｕ字管マノメータで測定した結
果であり、第１図に示した数値は噴射気体がｏ、ｘ２ｋ
ｇ７ｃｖｔの圧力で鋼帯５に衝突する位置より僅かに上
方で測定したものであり、エツジ部表裏において左右共
に−２２〜−２７ｍｒＩＬＡｑ程度であり、両エツジ部
がほぼ同様の圧力である。FIG. 1 shows two panels facing each other on both sides of the steel strip 5 in order to blow away the hot-dip plating metal coated on both the front and back sides of the steel strip 5 which passes through the molten plating metal bath and moves upward in continuous molten metal plating. This is the result of measuring the pressure of the gas near the gas injection nozzle 6.6' arranged with a water column type U-tube manometer, and the values shown in Figure 1 are the results when the injection gas is
The pressure was measured slightly above the position where it collides with the steel strip 5 at a pressure of g7 cvt, and the pressure is approximately -22 to -27 mrILAq on both the front and back sides of the edge portion, and the pressure is approximately the same at both edge portions.
また鋼帯５の両エツジ部から外れた位置では銅帯５の両
エツジ部より幾分高く−３０〜−３３Ａｑとなり、気体
噴射ノズル６．６′の両端部から外れた位置では−１５
〜−１６ｍｍＡｑと低くなっている。Also, at a position away from both edges of the steel strip 5, the value is -30 to -33Aq, which is somewhat higher than both edges of the copper strip 5, and at a position away from both ends of the gas injection nozzle 6.6', the value is -15Aq.
It is as low as ~-16mmAq.
これらの気体の流れの状態を矢印で示すと第２図の如く
なる。The state of the flow of these gases is shown by arrows as shown in FIG.
すなわち、気体噴射ノズル６．６′より噴射された気体
が鋼帯５に衝突して溶融メッキ金属を吹拭している状態
において、ロングフレームを気体噴射ノズル６．６′に
近ずけるとロングフレームは第２図の矢印に示す方向に
移動する。In other words, when the long frame is brought close to the gas injection nozzle 6.6' while the gas injected from the gas injection nozzle 6.6' is colliding with the steel strip 5 and wiping away the hot-dip plated metal, the long frame is The frame moves in the direction shown by the arrow in FIG.
これは噴射された気体の圧力によりその周囲がマイナス
圧力になるため、周辺から冷風が巻き込まれていること
を示しているのである。This indicates that the surrounding area becomes negative pressure due to the pressure of the injected gas, and cold air is drawn in from the surrounding area.
かかる状態で鋼帯５に付着した溶融メッキ金属の吹拭を
行なうとエツジオーバーコートが発生する。If the hot-dip plated metal adhering to the steel strip 5 is blown off in such a state, an edge overcoat will occur.
第３図はかかる状態において通常の作業条件である吹付
圧力が０．１２ｋｇ／ｆｆｌの場合の溶融亜鉛の付着量
の１例を示すもので、中央部の付着量は３１９ ｇ／
ｍｓ エツジ部の付着量は３５２ｇ／ｍ′、３５５ｇ／
ｍであり、中央部に対して両エツジ部がオーバーコート
されている。Figure 3 shows an example of the amount of molten zinc deposited when the spraying pressure is 0.12 kg/ffl, which is the normal working condition, and the amount deposited at the center is 319 g/ffl.
ms The adhesion amount on the edge part is 352g/m', 355g/m'
m, and both edge portions are overcoated with respect to the center portion.
本発明方法は第４図に示すエツジオーバーコート防止装
置を気体噴射ノズル６．６′に取り付けて両エツジ部の
オーバーコートを防止するものである。In the method of the present invention, an edge overcoat prevention device shown in FIG. 4 is attached to the gas injection nozzle 6,6' to prevent overcoat on both edges.
すなわち第５図に示す如くΔ型状などの干渉防止板３の
切欠部２側の各端面を鋼帯５の両エツジ部の端面にそれ
ぞれ接触または接近させ、且つ」切欠部２の両側板７，
７′の間に鋼帯５の両エツジ部が１００〜１２０ｍｍ内
側に入るようにして取付棒４を気体噴射ノズル６または
６′に取り付け、更に取付棒４により切欠部２が気体噴
射ノズル６゜６′の噴射口の下方になる如く、切欠部２
の位置をｊ調整してエツジオーバーコート装置をセット
するのである。That is, as shown in FIG. 5, each end surface of the interference prevention plate 3, such as a Δ-shaped one, on the notch 2 side is brought into contact with or approaches the end surfaces of both edge portions of the steel strip 5, and both side plates 7 of the notch 2 are ，
Attach the mounting rod 4 to the gas injection nozzle 6 or 6' so that both edges of the steel strip 5 enter 100 to 120 mm between 7' and the notch 2 to the gas injection nozzle 6° with the installation rod 4. The notch 2 is located below the injection port 6'.
Adjust the position by j and set the edge overcoat device.
かかる状態で溶融メッキ金属の吹拭を行なうと、鋼帯５
の両エツジ部を外れた位置に向って噴射された噴射気体
は△型状などの干渉防止板３の上面２にそれぞれ衝突す
るため、該噴射気体は干渉防止板３の上面に沿ってその
流れの方向を上方に変えられるので、噴射気体同志の干
渉が防止される。When hot-dip plated metal is blown in such a state, the steel strip 5
Since the injected gas injected toward a position away from both edge portions collides with the upper surface 2 of the interference prevention plate 3, such as a △ shape, the injected gas flows along the upper surface of the interference prevention plate 3. Since the direction of the injected gas can be changed upward, interference between the injected gases can be prevented.
また干渉防止板３の端面を鋼帯５の両エツジ部端面に接
触せしめておけば両エツジ部端面に付着し！た粒状の溶
融メッキ金属を除去することができる。Also, if the end surface of the interference prevention plate 3 is brought into contact with the end surfaces of both edges of the steel strip 5, it will adhere to both edge surfaces! It is possible to remove granular hot-dip plated metal.
また、このような状態でブロアーにより吸引を行なうと
両エツジ部周辺から巻き込まれる冷風を吸引管１により
吸引し、更には鋼帯５に衝突した噴射気体までも吸引す
るため鋼帯５は両エツジ部Ｊが冷却されることなく上方
に移行し幅方向に対し均一に溶融メッキ金属を付着させ
ることができる。In addition, when suction is performed by a blower in such a state, the cold air drawn in from around both edges is sucked by the suction pipe 1, and even the jetted gas that collides with the steel strip 5 is sucked, so the steel strip 5 is drawn in from both edges. The portion J moves upward without being cooled, and the hot-dip plated metal can be applied uniformly in the width direction.
この場合、吹拭圧力に対して適正な吸引圧力を設定して
おけばよく、また吸引圧力はラインスピード、目付量、
板厚、吹拭圧力によって異なるのこて、それに対応する
適正な値をあらかじめ各種の実験により求めておけばよ
い。In this case, it is only necessary to set an appropriate suction pressure for the blowing pressure, and the suction pressure can be adjusted depending on the line speed, area weight, etc.
The appropriate values may be determined in advance through various experiments, depending on the thickness of the plate and the blowing pressure.
また吸引管１の先端の切欠部２は気体噴射ノズル６．６
′の気体噴射口の直下に設けるのが望ましい。Also, the notch 2 at the tip of the suction tube 1 is a gas injection nozzle 6.6.
It is desirable to install it directly below the gas injection port.
かかるエツジオーバーコート防止装置を取り付４けて、
ブ冶アーで吸引して溶融メツサ金属の両エツジ部のオー
バーコートを防止する状態における気体噴射ノズル６．
６′附近の気体の流れの状態をロングフレームを用いて
調べた結果は、第６図に示す如く矢印の方向に正常に流
れている。Installing such an edge overcoat prevention device,
6. Gas injection nozzle in a state where it is sucked by a blower to prevent overcoating of both edges with molten metal.
The state of the gas flow around 6' was investigated using a long frame, and the result was that it was flowing normally in the direction of the arrow as shown in FIG.
すなわち、周辺からの冷風の巻き込み分を吸引し、更に
は鋼帯５に衝突した噴射気体までも吸い込んだため鋼帯
５は両エツジ部が冷却されることなく通過するので、両
エツジ部のオーバーコートが防止され、幅方向に均一な
付着量が得られるのである。In other words, the cold air entrained from the surrounding area is sucked in, and even the jet gas that collided with the steel strip 5 is sucked in, so the steel strip 5 passes through without being cooled at both edges, so that the overhang of both edges is absorbed. Coating is prevented and a uniform amount of adhesion can be obtained in the width direction.
以上詳述した如く、本発明方法に係る連続溶融メッキに
おけるエツジオーバーコート防止方法は気体噴射ノズル
にエツジオーバーコート防止装置を取り付けて、両エツ
ジ部附近の気体を吸引管で吸引すると共に干渉防止板の
端面を鋼帯のエツジ部端面に接触または接近させてエツ
ジ部を外れた位置に向って噴射された気体同志の干渉を
防止し、更に両エツジ部端面に付着した粒状の溶融メッ
キ金属を除去するものであり、銅帯の両エツジ部が冷却
されることがないため両エツジ部におけるオーバーコー
トの発生が全く無くなり、品質、特に製品の外観を著し
く向上させることができる優れた利点を有しており、ま
た従来の如きエツジ部に”当て物″なとの防止板を取り
付けたり、あるいはバーナによる火焔を吹き付けてオー
バーコートを除いてから、表面に付着したアッシュなど
を除去したりする必要が全く無いなどの種々の優れた利
点を有しており、その工業的価値は太きいものがある。As detailed above, the method for preventing edge overcoat in continuous hot-dip plating according to the present invention involves attaching an edge overcoat prevention device to a gas injection nozzle, sucking the gas near both edges with a suction pipe, and using an interference prevention plate. The end face of the steel strip is brought into contact with or close to the end face of the edge part of the steel strip to prevent the interference of the gases sprayed toward the position away from the edge part, and furthermore, the granular hot-dip plated metal attached to the end face of both edge parts is removed. Since both edges of the copper strip are not cooled, there is no overcoating on both edges, which has the excellent advantage of significantly improving quality, especially the appearance of the product. In addition, there is no need to attach a protective plate to the edge, or to remove the overcoat by blowing flame from a burner, and then remove ash, etc. that has adhered to the surface. It has various excellent advantages such as the absence of carbon dioxide, and its industrial value is great.
以下、実施例により本発明方法を更に説明する。The method of the present invention will be further explained below with reference to Examples.
実施例
連続溶融亜鉛メッキにおいて、溶融亜鉛メッキ浴を通過
した銅帯を吹拭圧力０．１２ ｋｇ／ｃｒ？Ｌで溶融亜
鉛を吹拭する際に、気体噴射ノズルに第４図および第５
図に示す如きエツジオーバーコート防止装置を取り付け
て本発明方法を実施した。Example In continuous hot-dip galvanizing, the copper strip that passed through the hot-dip galvanizing bath was wiped at a pressure of 0.12 kg/cr? When blowing molten zinc with L, the gas injection nozzle is
The method of the present invention was carried out by installing an edge overcoat prevention device as shown in the figure.
また比較例としてエツジオーバーコート防止装置を取り
付けない場合についても実施した。In addition, as a comparative example, a case was also conducted in which no edge overcoat prevention device was attached.
その結果は次表の通りであり、本発明方法は比較例に比
し、エツジ部のオーバーコートが防止された。The results are shown in the table below, and the method of the present invention prevented edge overcoating compared to the comparative example.
第１図は気体噴射ノズル附近の気体圧力を示す説明図、
第２図は気体噴射ノズル附近の気体の流れの状態を示す
説明図、第３図は鋼帯のエツジオーバーコートの状態を
示す説明図、第４図は本発明方法を実施するために使用
するエツジオーバーコート防止装置の斜視図、第５図は
本発明方法の実施状態を示す説明図、第６図は本発明方
法における気体噴射ノズル附近の気体の流れの状態を示
す説明図である。
１・・・・・・吸引管、２・・・・・・切欠部、３・・
・・・・干渉防止板、４・・・・・・取付棒、５・・・
・・・鋼帯、６，６′・・・・・・気体噴射ノズル、７
，７′側板。Figure 1 is an explanatory diagram showing the gas pressure near the gas injection nozzle;
Fig. 2 is an explanatory diagram showing the state of gas flow near the gas injection nozzle, Fig. 3 is an explanatory diagram showing the state of the edge overcoat of the steel strip, and Fig. 4 is an explanatory diagram showing the state of the edge overcoat of the steel strip. FIG. 5 is a perspective view of the edge overcoat prevention device, FIG. 5 is an explanatory diagram showing the implementation state of the method of the present invention, and FIG. 6 is an explanatory diagram showing the state of gas flow near the gas injection nozzle in the method of the present invention. 1... Suction tube, 2... Notch, 3...
...Interference prevention plate, 4...Mounting rod, 5...
...Steel strip, 6,6'...Gas injection nozzle, 7
, 7' side plate.
Claims (1)
被覆された溶融メッキ金属を吹拭する気体噴射ノズル間
の両側に、銅帯のエツジ部附近の気体を吸引する吸引管
の先端部に上下を切り欠いた切欠部を有し、且つ該切欠
部の吸引管側端部の上に干渉防止板を取り付けたエツジ
オーバーコート防止装置を設け、該干渉防止板の切欠部
側の各端面を鋼帯の両エツジ部の端面にそれぞれ接触ま
たは接近させ、且つ該切欠部の両側板の間に銅帯の両エ
ツジ部が入り、切欠部の位置が気体噴射ノズルの噴射口
の下方となる如く調節して、気体噴射ノズルから噴射し
た気体が鋼帯に衝突する位置の下方で両エツジ部周辺の
気体を吸引することにより、鋼帯の両エツジ部のオーバ
ーコートを防止することを特徴とする連続溶融メッキに
おけるエツジオーバーコート防止方法。1. In continuous hot-dip plating of steel strips, on both sides between the gas injection nozzles that blow away the hot-dip plated metal coated on both the front and back sides of the copper strip, and at the tip of the suction tube that sucks the gas near the edge of the copper strip. An edge overcoat prevention device is provided which has a notch with the top and bottom cut out, and an interference prevention plate is attached to the end of the suction pipe side of the notch, and each end face of the interference prevention plate on the notch side is provided. The copper strip is brought into contact with or close to the end surfaces of both edge portions of the steel strip, and adjusted so that both edge portions of the copper strip fit between the side plates of the notch and the position of the notch is below the injection port of the gas injection nozzle. The continuous melting method is characterized in that overcoating of both edges of the steel strip is prevented by suctioning the gas around both edges below the position where the gas injected from the gas injection nozzle collides with the steel strip. Method for preventing edge overcoat in plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP835576A JPS5821024B2 (en) | 1976-01-30 | 1976-01-30 | Method for preventing edge bar coat in continuous melt plating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP835576A JPS5821024B2 (en) | 1976-01-30 | 1976-01-30 | Method for preventing edge bar coat in continuous melt plating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5291740A JPS5291740A (en) | 1977-08-02 |
| JPS5821024B2 true JPS5821024B2 (en) | 1983-04-26 |
Family
ID=11690910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP835576A Expired JPS5821024B2 (en) | 1976-01-30 | 1976-01-30 | Method for preventing edge bar coat in continuous melt plating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821024B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380226B (en) * | 2011-09-22 | 2015-08-12 | 新日铁住金株式会社 | Wiping arrangement and employ its hot dip process device |
-
1976
- 1976-01-30 JP JP835576A patent/JPS5821024B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5291740A (en) | 1977-08-02 |
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