JPH0126763Y2 - - Google Patents

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Publication number
JPH0126763Y2
JPH0126763Y2 JP2997986U JP2997986U JPH0126763Y2 JP H0126763 Y2 JPH0126763 Y2 JP H0126763Y2 JP 2997986 U JP2997986 U JP 2997986U JP 2997986 U JP2997986 U JP 2997986U JP H0126763 Y2 JPH0126763 Y2 JP H0126763Y2
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JP
Japan
Prior art keywords
snout
bath surface
molten metal
plating
duct
Prior art date
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Expired
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JP2997986U
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Japanese (ja)
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JPS62141058U (en
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Priority to JP2997986U priority Critical patent/JPH0126763Y2/ja
Publication of JPS62141058U publication Critical patent/JPS62141058U/ja
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Description

【考案の詳細な説明】 (産業の利用分野) 本考案は連続溶融金属メツキ装置に関する。[Detailed explanation of the idea] (Field of industrial use) The present invention relates to continuous molten metal plating equipment.

(従来の技術) 還元性雰囲気の焼鈍炉を通過することで、焼鈍
および表面を還元浄化された鋼帯が、スナウトを
通して表面無酸化のままメツキ浴槽に導入され、
溶融金属(例えば溶融亜鉛)中を通過する間に鋼
帯の表面に亜鉛を付着させる連続溶融金属メツキ
において、鋼帯の表面にはメツキ浴槽の表面部に
没入されているスナウトで囲まれた部分にある溶
融金属が多く付着する。
(Prior art) A steel strip whose surface has been annealed and purified by passing through an annealing furnace in a reducing atmosphere is introduced into a plating bath through a snout with its surface unoxidized.
In continuous molten metal plating, in which zinc is deposited on the surface of a steel strip while passing through molten metal (e.g. molten zinc), the surface of the steel strip has a portion surrounded by a snout that is immersed in the surface of the plating bath. A large amount of molten metal adheres to the surface.

しかし、この部分の溶融金属には、鋼帯から溶
出する鉄分が混入し、漸次鉄分の濃度が増加す
る。このように、スナウト内で溶融金属中の鉄分
含有量が徐々に増量すると、メツキ層に変動が生
じ品質低下を招く。
However, the molten metal in this area is mixed with iron eluted from the steel strip, and the iron concentration gradually increases. As described above, when the iron content in the molten metal gradually increases within the snout, the plating layer changes and quality deteriorates.

また、溶融金属中に適量のアルミニウムを添加
してメツキ層の改善を試みているが、アルミニウ
ムを添加すると鋼帯から溶出した鉄分が優先的に
アルミニウムと反応し、Fe2Al3なる固体相を生
成し、この物質が浮上してドロス化する。更にス
ナウトで囲まれた部分の浴面から蒸発した溶融金
属がスナウトの内壁に金属灰(アツシユ)となつ
て付着し、その一部がスナウト内の浴面に落下す
る。
In addition, attempts have been made to improve the plating layer by adding an appropriate amount of aluminum to the molten metal, but when aluminum is added, the iron eluted from the steel strip preferentially reacts with the aluminum, forming a solid phase called Fe 2 Al 3 . This substance floats to the surface and turns into dross. Further, molten metal evaporated from the bath surface in the area surrounded by the snout adheres to the inner wall of the snout as metal ash, and a portion of the ash falls onto the bath surface inside the snout.

前記ドロスおよび金属灰からなる夾雑物は、進
入して来る鋼帯に付着したり、あるいは進入する
際の巻き込み現象によりメツキ面に固着して品質
を低下させる。また、ドロス発生により、溶融金
属中のアルミニウム量が減少してメツキ層に変動
が生じ品質の安定化を妨げる。
The impurities consisting of the dross and metal ash adhere to the steel strip entering the steel strip, or adhere to the plating surface due to the entrainment phenomenon when entering the steel strip, degrading the quality. In addition, due to the generation of dross, the amount of aluminum in the molten metal decreases, causing fluctuations in the plating layer and hindering the stabilization of quality.

そこで、溶融メツキ層の品質の向上を図るよう
になされた技術の提案が特開昭60−230969号公報
によりなされた。
Therefore, Japanese Patent Laid-Open No. 60-230969 proposed a technique for improving the quality of the hot-dip plating layer.

この技術においては、スナウト外の溶融金属を
電磁ポンプにより吸引し、スナウト内に排出させ
る構成になつている。
In this technique, molten metal outside the snout is sucked in by an electromagnetic pump and discharged into the snout.

(考案が解決しようとする問題点) しかし、前記従来技術ではスナウト外の浴面上
に浮遊堆積する夾雑物を溶融金属と共に吸引して
しまう。したがつて、スナウト内の浴面の清浄度
が次第に損なわれる問題点を有する。
(Problems to be Solved by the Invention) However, in the above-mentioned prior art, the foreign matter suspended and deposited on the bath surface outside the snout is sucked together with the molten metal. Therefore, there is a problem that the cleanliness of the bath surface within the snout gradually deteriorates.

本考案は、上記従来の問題点を解決するために
なされたもので、スナウト内部に清浄な溶融金属
を導入して高品質メツキが得られるように構成し
た連続溶融金属メツキ装置を提供することを目的
とする。
The present invention was made in order to solve the above-mentioned conventional problems, and aims to provide a continuous molten metal plating device configured to introduce clean molten metal into the interior of the snout and obtain high quality plating. purpose.

(問題点を解決するための手段) 本考案は、上記目的を達成するため、メツキ浴
槽の表面部に没入されているスナウトの内部のメ
ツキ浴面と外部のメツキ浴面との間に、ダクト
を、その内部吐出口および外部吸込口が浴面下に
没入するように設け、前記ダクト内には推進装置
もしくはポンプを設け、前記外部吸込口の上部周
囲に浴面上に突出する筒状の堰を設けるようにし
たものである。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides a duct between the internal plating bath surface of the snout which is immersed in the surface of the plating bathtub and the external plating bath surface. is provided so that its internal discharge port and external suction port are submerged below the bath surface, a propulsion device or a pump is provided in the duct, and a cylindrical pipe protruding above the bath surface is provided around the upper part of the external suction port. A weir was installed.

(作用) 本考案においては、スナウト外の浴面上に浮遊
する夾雑物が混入しない清浄な溶融金属を外部吸
込口から吸い込んで、内部吐出口よりスナウト内
に吐き出す。
(Function) In the present invention, clean molten metal free from contaminants floating on the bath surface outside the snout is sucked in from the external suction port and discharged into the snout from the internal discharge port.

(実施例) 第1図は本考案の一実施例を示す縦断正面図で
あり、鋼帯1は図示されない前工程の還元性雰囲
気を有する焼鈍炉により焼鈍および表面を浄化さ
れる。
(Example) FIG. 1 is a longitudinal sectional front view showing an example of the present invention, in which a steel strip 1 is annealed and its surface is purified in an annealing furnace having a reducing atmosphere in a pre-process (not shown).

ついで、鋼帯1はスナウト2を通り表面無酸化
のままメツキ浴槽3の溶融金属(例えば溶融亜鉛
もしくは溶融亜鉛合金)4におけるスナウト2内
部のメツキ浴面4aに導入され、紙面奥方向に移
送したのち引き上げられてスナウト2外部のメツ
キ浴面4bから導出される。
Next, the steel strip 1 passed through the snout 2 and was introduced into the plating bath surface 4a inside the snout 2 in the molten metal (for example, molten zinc or molten zinc alloy) 4 of the plating bath 3 with its surface unoxidized, and was transferred toward the back of the page. It is then pulled up and led out from the plating bath surface 4b outside the snout 2.

スナウト2は下端開口部が溶融金属の表面部に
没入しており、内部のメツキ浴面4aの下近傍
と、外部のメツキ浴面4bの下近傍間を連通させ
るダクト5,51が鋼帯1の幅方向両側に設けら
れている。両ダクト5,51は耐熱鋼(例えばス
テンレス鋼)によつて形成され、図示されない固
定手段を介して上下移動可能にそれぞれスナウト
2に固定してある。
The lower end opening of the snout 2 is submerged in the surface of the molten metal, and the ducts 5 and 51 that connect the lower part of the inner plating bath surface 4a and the lower part of the outer plating bath surface 4b are connected to the steel strip 1. are provided on both sides in the width direction. Both ducts 5, 51 are made of heat-resistant steel (for example, stainless steel), and are each fixed to the snout 2 via fixing means (not shown) so as to be vertically movable.

一方のダクト5(図面左側のダクト)はスナウ
ト2内部のメツキ浴面4a下に没入して開口する
内部吐出口5Aと、スナウト2外部のメツキ浴面
4b下に没入して開口する外部吸込口5Bとを有
し、内部吐出口5Aと外部吸込口5Bの上端を同
じ高さに設定し、外部吸込口5Bの深さを知るこ
とで内部吐出口5Aの深さを想定できるようにし
ている。そして、その深さは、浴面4a,4bか
ら約50mmの深さに位置させている。
One duct 5 (the duct on the left side of the drawing) has an internal discharge port 5A that opens under the plating bath surface 4a inside the snout 2, and an external suction port that opens under the plating bath surface 4b outside the snout 2. 5B, and the upper ends of the internal discharge port 5A and the external suction port 5B are set at the same height, so that the depth of the internal discharge port 5A can be estimated by knowing the depth of the external suction port 5B. . The depth thereof is approximately 50 mm from the bath surfaces 4a and 4b.

尚、前記内部吐出口5Aと外部吸入口5Bの位
置を浴面4a,4bから約20mmの深さに設定する
ことが望ましいとされているが、浴面4a,4b
のレベルの変動を考慮して前記50mmの深さに設定
してある。
It is said that it is desirable to set the positions of the internal discharge port 5A and the external suction port 5B at a depth of approximately 20 mm from the bath surfaces 4a and 4b.
The depth is set at 50 mm in consideration of the fluctuation in the level.

5A1は整流部で、第2図および第3図に示す
ように、上下方向の角形閉断面部5aの上端に設
けられ、内部吐出口5Aから上方に延びて浴面4
aから突出し、かつ鋼帯1の側面に対向する部分
が開放されたコ字形に形成している。また、外部
吸込口5Bは上下方向の丸形閉断面部5bの上端
に上向きに設けられ、スナウト2の傾斜方向と同
方向に傾斜する角形閉断面部5aと丸形閉断面部
5bとの下部は角形閉断面の連通部5cにより連
通している。
Reference numeral 5A1 denotes a flow straightening section, which is provided at the upper end of the rectangular closed section section 5a in the vertical direction, as shown in FIGS.
The steel strip 1 is formed in a U-shape with an open portion protruding from a and facing the side surface of the steel strip 1. Further, the external suction port 5B is provided upward at the upper end of the round closed section 5b in the vertical direction, and is located at the lower part of the square closed section 5a and the round closed section 5b that are inclined in the same direction as the inclination direction of the snout 2. are communicated through a communication portion 5c having a rectangular closed cross section.

外部吸込口5Bの上部周囲に浴面4b上に突出
する筒状の堰6を設けている。この堰6はダクト
5と同様耐熱鋼によつて形成され、メツキ浴層3
に着脱可能に取付けられている。そして、吸込口
5Bの開口レベルよりも下方に堰6の下端を位置
させている。
A cylindrical weir 6 projecting above the bath surface 4b is provided around the upper part of the external suction port 5B. This weir 6 is made of heat-resistant steel like the duct 5, and the plating bath layer 3
It is removably attached to the The lower end of the weir 6 is located below the opening level of the suction port 5B.

他方のダクト51(第1図右側のダクト)は前
記ダクト5と同じ形状に形成され、スナウト2内
部のメツキ浴面4a下に没入して開口する部分を
内部開口部51Aとし、またスナウト2外部のメ
ツキ浴面4b下に没入して開口する部分を外部開
口部51Bとしている。そして、内部開口部51
Aには、前記ダクト5と同様に上方に延びて浴面
4aから突出し、鋼帯1の側面に対向する部分が
開放されたコ字形の整流板51aを設けている。
The other duct 51 (the duct on the right side in Figure 1) is formed in the same shape as the duct 5, and the part that opens by sinking under the plating bath surface 4a inside the snout 2 is an internal opening 51A, and the part outside the snout 2 is an internal opening 51A. The part that sinks and opens below the plating bath surface 4b is defined as an external opening 51B. And the internal opening 51
A is provided with a U-shaped rectifying plate 51a which extends upward and protrudes from the bath surface 4a, similar to the duct 5, and whose portion facing the side surface of the steel strip 1 is open.

ダクト5,51の外部吸込口5Bと外部開口部
51Bにはそれぞれ推進装置8のプロペラ8cを
出し入れ可能に配設している。即ち、推進装置8
は竪型フランジモータによつてなる回転駆動部8
Aとこれにより回転駆動されるプロペラシヤフト
8Bを有し、このプロペラ8Bに3枚羽根からな
る前記プロペラ8Cを上下2段に取付けている。
そして、推進装置8は図示されない固定手段によ
つてメツキ浴槽3に着脱可能に固定されている。
又、プロペラとダクト5,51内側との隙間を20
〜30mmとし、容易に出し入れできるようにしてい
る。尚、プロペラシヤフト8Bとプロペラ8Cは
それぞれ耐熱鋼によつて形成されている。
A propeller 8c of the propulsion device 8 is disposed in and out of the external suction port 5B and the external opening 51B of the ducts 5 and 51, respectively. That is, the propulsion device 8
is a rotary drive unit 8 formed by a vertical flange motor.
A and a propeller shaft 8B rotationally driven by the propeller shaft 8B, and the propeller 8C consisting of three blades is attached to the propeller 8B in upper and lower stages.
The propulsion device 8 is detachably fixed to the plating bathtub 3 by a fixing means (not shown).
Also, the gap between the propeller and the inside of ducts 5 and 51 is 20
~30mm, making it easy to put in and take out. Note that the propeller shaft 8B and propeller 8C are each made of heat-resistant steel.

次に上記構成の作用を説明する。 Next, the operation of the above configuration will be explained.

堰6が設けられているダクト5に対応する推進
装置8の回転駆動部8Aを駆動して、プロペラシ
ヤフト8Bおよびプロペラ8Cを例えば正方向に
回転させると、プロペラ8Cの推力によつてダク
ト5内の溶融金属4に外部吸込口5Bから内部吐
出口5Aに向う矢印Aの流れが生じる。
When the rotation drive unit 8A of the propulsion device 8 corresponding to the duct 5 in which the weir 6 is installed is driven to rotate the propeller shaft 8B and the propeller 8C in the forward direction, for example, the inside of the duct 5 is rotated by the thrust of the propeller 8C. The flow of arrow A from the external suction port 5B toward the internal discharge port 5A is generated in the molten metal 4.

したがつて、堰6で囲まれたメツキ浴面4Cお
よび浴面4C下の溶融金属4は、外部吸込口5B
からダクト5に吸い込み導入され、内部吐出口5
Aからスナウト2の内部に吐き出される。外部吸
込口5Bの上部周囲にはスナウト2の外部浴面4
b上に突出し、かつその下端が外部吸込口5Bよ
りも下側に位置する円筒状の堰6を設けている。
したがつて、スナウト2の外部浴面4b上に夾雑
物9が浮遊堆積していても、この夾雑物9が円筒
状の堰6によつてさえぎられて、外部吸込口5B
から吸い込まれない。これにより清浄な溶融金属
4のみがスナウト2内に吐き出される。しかも、
吐き出された溶融金属4は、内部吐出口5Aの上
端に形成されたコ字形の整流部5A1によつて、
鋼帯1の幅方向に指向されるから、鋼帯1の表面
に清浄な溶融金属4が付着し高品質のメツキがな
される。
Therefore, the plating bath surface 4C surrounded by the weir 6 and the molten metal 4 below the bath surface 4C are transferred to the external suction port 5B.
The suction is introduced into the duct 5 from the internal discharge port 5.
It is spit out from A into the inside of Snout 2. The external bath surface 4 of the snout 2 is located around the upper part of the external suction port 5B.
A cylindrical weir 6 is provided that protrudes above b and has a lower end located below the external suction port 5B.
Therefore, even if the foreign matter 9 is suspended and deposited on the external bath surface 4b of the snout 2, this foreign matter 9 is blocked by the cylindrical weir 6 and the external suction port 5B is
It doesn't get sucked in. As a result, only clean molten metal 4 is discharged into the snout 2. Moreover,
The discharged molten metal 4 is passed through a U-shaped rectifier 5A1 formed at the upper end of the internal discharge port 5A.
Since it is oriented in the width direction of the steel strip 1, clean molten metal 4 adheres to the surface of the steel strip 1, resulting in high quality plating.

尚、堰6を浴面上に持ち上げて、プロペラ8C
を逆方向に回転させることにより、スナウト2内
の夾雑物をスナウト2外に除去することもでき
る。
In addition, lift the weir 6 above the bath surface and move the propeller 8C.
By rotating the snout 2 in the opposite direction, foreign matter inside the snout 2 can be removed to the outside of the snout 2.

また、前記他方のダクト51の外部開口部51
Bに対応している推進装置8を回転させると、プ
ロペラ8Cの推力によつてダクト51内の溶融金
属4に内部開口部51Aから外部開口部51Bに
向う矢印Bの流れが生じる。
Further, the external opening 51 of the other duct 51
When the propulsion device 8 corresponding to B is rotated, the thrust of the propeller 8C causes a flow of arrow B in the molten metal 4 in the duct 51 from the internal opening 51A to the external opening 51B.

したがつて、スナウト2で囲まれたスナウト内
のメツキ浴面4aおよび浴面4a下近傍の溶融金
属4は、内部開口部51Aからダクト51に導入
されスナウト2の外部に排出される。そのため、
前記メツキ浴面4aに夾雑物9が生成しても、溶
融金属4とともにスナウト2の外部に排出除去さ
れ、鋼帯1に対する夾雑物の付着を防止する。
Therefore, the plating bath surface 4a in the snout surrounded by the snout 2 and the molten metal 4 near the bottom of the bath surface 4a are introduced into the duct 51 through the internal opening 51A and discharged to the outside of the snout 2. Therefore,
Even if foreign matter 9 is generated on the plating bath surface 4a, it is discharged and removed to the outside of the snout 2 together with the molten metal 4, thereby preventing the foreign matter from adhering to the steel strip 1.

また、スナウト2で囲まれている溶融金属4中
に鋼帯1から溶出する鉄分が混入しても、この部
分においてのみ鉄分の濃度が漸次増加する不都合
を生じないので、メツキ層の変動が抑制され品質
を安定させる。
In addition, even if iron leached from the steel strip 1 mixes into the molten metal 4 surrounded by the snout 2, the concentration of iron does not gradually increase only in this part, so fluctuations in the plating layer are suppressed. to stabilize quality.

尚、上記実施例ではダクト5に推進装置8を設
けた構成として説明しているが推進装置8に代え
てポンプを設けた構成としても上記実施例と同様
の効果を奏する。ただし、推進装置8を用いた方
が取付けおよび保守点検上有利である。
In the above embodiment, the duct 5 is provided with a propulsion device 8. However, a pump may be provided in place of the propulsion device 8 to achieve the same effects as in the above embodiment. However, using the propulsion device 8 is more advantageous in terms of installation and maintenance inspection.

また、上記実施例では、ダクト5の外部吸込口
5Bの上部周囲に筒状の堰6を設けた溶融金属清
浄導入装置を、鋼帯1の幅方向一側方(第1図左
側)に設けるようにしているが、これに限らず、
前記溶融金属清浄導入装置を鋼帯1の幅方向他側
方に設けたりあるいは鋼帯1の周囲の側方適所に
1つ又は複数設けるようにしてもよい。
Further, in the above embodiment, a molten metal cleaning introducing device having a cylindrical weir 6 provided around the upper part of the external suction port 5B of the duct 5 is provided on one side in the width direction of the steel strip 1 (on the left side in FIG. 1). However, not limited to this,
The molten metal cleaning introduction device may be provided on the other side of the steel strip 1 in the width direction, or one or more may be provided at appropriate lateral positions around the steel strip 1.

(考案の効果) 以上説明したように本考案によれば、ダクトの
外部吸込口の上部周囲に浴面上に突出する筒状の
堰を設け、スナウト外の浴面上に浮遊する夾雑物
をさえぎり、推進装置もしくはポンプにより清浄
な溶融金属を前記外部吸込口から吸い込んで内部
吐出口よりスナウト内に吐き出されるから、鋼帯
の表面に清浄な溶融金属が付着し、高品質のメツ
キがなされる。
(Effect of the invention) As explained above, according to the invention, a cylindrical weir protruding above the bath surface is provided around the upper part of the external suction port of the duct, and foreign matter floating on the bath surface outside the snout is removed. Clean molten metal is sucked in from the external suction port by a blocking device, propulsion device, or pump and discharged into the snout from the internal discharge port, so that the clean molten metal adheres to the surface of the steel strip, resulting in high-quality plating. .

【図面の簡単な説明】[Brief explanation of the drawing]

第1図ないし第2図は本考案の一実施例を示
し、第1図は縦断正面図、第2図は要部の正面
図、第3図は第1図の要部−横断平面図であ
る。 2……スナウト、3……メツキ浴槽、4……溶
融金属、4a……スナウト内のメツキ浴面、4b
……スナウト外のメツキ浴面、5……ダクト、5
A……内部吐出口、5B……外部吸込口、6……
堰、8……推進装置。
Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a vertical sectional front view, Figure 2 being a front view of the main part, and Figure 3 being a cross-sectional plan view of the main part of Figure 1. be. 2... Snout, 3... Plated bathtub, 4... Molten metal, 4a... Plated bath surface in snout, 4b
...Metted bath surface outside the snout, 5...Duct, 5
A...Internal discharge port, 5B...External suction port, 6...
Weir, 8...propulsion device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] メツキ浴槽の表面部に没入されれているスナウ
トの内部のメツキ浴面と外部のメツキ浴面との間
に、ダクトを、その内部吐出口および外部吸込口
が浴面下に没入するように設け、前記ダクト内に
は推進装置もしくはポンプを設け、前記外部吸込
口の上部周囲に浴面上に突出する筒状の堰を設け
たことを特徴とする連続溶融金属メツキ装置。
A duct is installed between the internal plating bath surface and the external plating bath surface of the snout, which is immersed in the surface of the plating bathtub, so that its internal discharge port and external suction port are submerged below the bath surface. A continuous molten metal plating apparatus, characterized in that a propulsion device or a pump is provided in the duct, and a cylindrical weir protruding above the bath surface is provided around the upper part of the external suction port.
JP2997986U 1986-02-28 1986-02-28 Expired JPH0126763Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2997986U JPH0126763Y2 (en) 1986-02-28 1986-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2997986U JPH0126763Y2 (en) 1986-02-28 1986-02-28

Publications (2)

Publication Number Publication Date
JPS62141058U JPS62141058U (en) 1987-09-05
JPH0126763Y2 true JPH0126763Y2 (en) 1989-08-10

Family

ID=30834365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2997986U Expired JPH0126763Y2 (en) 1986-02-28 1986-02-28

Country Status (1)

Country Link
JP (1) JPH0126763Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4800013B2 (en) * 2004-12-22 2011-10-26 株式会社フジクラ Metal filling apparatus and metal filling method
JP7252465B2 (en) * 2019-10-10 2023-04-05 日本製鉄株式会社 Hot-dip metal plating equipment

Also Published As

Publication number Publication date
JPS62141058U (en) 1987-09-05

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