JP4546116B2 - Steel sheet fluttering suppression device - Google Patents

Steel sheet fluttering suppression device Download PDF

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JP4546116B2
JP4546116B2 JP2004064134A JP2004064134A JP4546116B2 JP 4546116 B2 JP4546116 B2 JP 4546116B2 JP 2004064134 A JP2004064134 A JP 2004064134A JP 2004064134 A JP2004064134 A JP 2004064134A JP 4546116 B2 JP4546116 B2 JP 4546116B2
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steel plate
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誠 勝部
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Nippon Steel Corp
Nippon Steel Engineering Co Ltd
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本発明は、整流板を備えた鋼板のフラッタリング抑制装置に関する。 The present invention relates to a fluttering suppressing device for a steel plate provided with a current plate.

近年、連続溶融金属めっき設備のめっき品質を向上させるために、めっき浴から引き上げられる鋼板の振動をなくし、めっき付着量を均一化させるために、鋼板の振動を防止する鋼板のフラッタリング抑制装置が設けられている。
例えば、特許文献1には、亜鉛めっき浴の浴面近傍に浮遊するアルミニウムのドロスを介して、鋼帯(鋼板)を両側より挟持する挟持機構が設けられた溶融亜鉛めっき鋼帯の振動防止装置が開示されている。
In recent years, in order to improve the plating quality of continuous molten metal plating equipment, there has been a steel plate fluttering suppression device that prevents the vibration of the steel plate in order to eliminate the vibration of the steel plate pulled up from the plating bath and to uniformize the coating amount. Is provided.
For example, Patent Document 1 discloses an apparatus for preventing vibration of a hot dip galvanized steel strip provided with a clamping mechanism for clamping a steel strip (steel plate) from both sides via an aluminum dross floating in the vicinity of the bath surface of the galvanizing bath. Is disclosed.

また、特許文献2には、シンクロールとガスワイピングノズルとの間のめっき浴面下部の鋼板片面あるいは両面に、鋼板面と平行に整流板を配置して、鋼板と整流板間の鋼板随伴流れの平均流速を低下させて静圧を上昇させる連続溶融金属めっきでのフラッタリング抑制方法及びその装置が開示されている。
更に、特許文献3には、鋼帯との間隔を10〜80mmとした整流板が設けられた鋼帯の連続溶融金属めっき装置が開示されている。
Further, in Patent Document 2, a current plate is disposed in parallel with the steel plate surface on one or both surfaces of the steel plate below the plating bath surface between the sink roll and the gas wiping nozzle, and the accompanying flow of the steel plate between the steel plate and the current plate. A method and apparatus for suppressing fluttering in continuous molten metal plating that increases the static pressure by reducing the average flow velocity of the steel is disclosed.
Furthermore, Patent Document 3 discloses a continuous hot-dip metal plating apparatus for a steel strip provided with a rectifying plate whose distance from the steel strip is 10 to 80 mm.

特開平6−322500号公報JP-A-6-322500 特開2003−293106号公報JP 2003-293106 A 特許第3017513号公報Japanese Patent No. 3017513

しかしながら、前記従来の鋼板のフラッタリング抑制装置は未だ解決すべき以下のような問題があった。
特許文献1の発明では、鋼板の挟持機構を取付けた側(手前側)のドロスは除去し易いが、その反対側(奥側)は除去し難く、挟持機構の取付けも困難であった。また挟持機構の挟持棒はドロスが接触しているのでドロスが付着し易かった。更にドロスが浴面上に堆積し、このドロスにめっき浴中の亜鉛が付着して固まってしまうので、鋼板と接触すると鋼板が傷付くことがあった。
However, the conventional steel plate fluttering suppression device still has the following problems to be solved.
In the invention of Patent Document 1, the dross on the side (near side) on which the steel sheet clamping mechanism is attached is easy to remove, but the opposite side (back side) is difficult to remove and the clamping mechanism is difficult to attach. Also, since the holding rod of the holding mechanism was in contact with the dross, it was easy for the dross to adhere. Further, dross accumulates on the bath surface, and zinc in the plating bath adheres to the dross and hardens, so that the steel plate may be damaged when it comes into contact with the steel plate.

特許文献2の発明では、整流板に亜鉛が付着して清掃が大変であった。特に、鋼板の奥側に整流板を設けた場合にはメンテナンスが難しかった。
また、特許文献3の発明では、鋼帯と整流板との間隔を広くとり、鋼帯へのドロスの付着を防止しているが、その間隔が広いため、鋼帯のフラッタリングが抑制されなかった。また、鋼板製の整流板を使用しているため、整流板に亜鉛が付着し易かった。
In invention of patent document 2, zinc adhered to the baffle plate and cleaning was difficult. In particular, maintenance was difficult when a current plate was provided on the back side of the steel plate.
Moreover, in invention of patent document 3, although the space | interval of a steel strip and a baffle plate is taken wide, adhesion of dross to a steel strip is prevented, but since the space | interval is wide, fluttering of a steel strip is not suppressed. It was. Moreover, since the rectifying plate made of steel plate is used, zinc easily adheres to the rectifying plate.

本発明はかかる事情に鑑みてなされたもので、溶融金属が付着し難く、浮遊するドロスを除去し易い鋼板のフラッタリング抑制装置を提供することを目的とする。 This invention is made | formed in view of this situation, and it aims at providing the fluttering suppression apparatus of the steel plate which a molten metal cannot adhere easily and is easy to remove the floating dross.

前記目的に沿う請求項1記載の鋼板のフラッタリング抑制装置は、連続溶融金属めっきを行うに際し、溶融金属のめっき槽内のめっき浴中に浸漬されたシンクロールと、該めっき槽の上方に設置され、該シンクロールを介して浸漬され前記めっき槽から所定方向に引き出される鋼板に対して空気又は不活性ガスを吹き付けて該鋼板に付着しためっき量を均一に制御するガスワイピングノズルとの間のめっき浴面下部の前記鋼板の両面に、該鋼板面と平行に整流板を配置し、該鋼板と該整流板の間の鋼板随伴流れの平均流速を低下させて静圧を上昇させる鋼板のフラッタリング抑制装置において、
前記鋼板の反りを検知する反り検知装置を前記めっき槽外に設けると共に、前記反り検知装置によって検知された鋼板の反りを矯正するための反り矯正ロールを前記シンクロールと前記整流板との間に設け、
前記鋼板の両面に設けられた前記整流板はそれぞれ独立にアームを介して連結された位置調整機構によって上下方向及び前後方向に移動可能であり、しかも前記各整流板が表面にセラミックファイバーを巻いた板であって、
前記鋼板と前記整流板との距離を3〜5mm(5mmを除く)とし、前記整流板の上端位置を浴面より5〜10mm沈んだ位置とし、前記整流板の幅を前記鋼板の幅以上としている。
The apparatus for suppressing fluttering of a steel sheet according to claim 1, which meets the above object, is provided above a sink roll immersed in a plating bath in a molten metal plating tank and a plating tank when performing continuous molten metal plating. And a gas wiping nozzle that uniformly controls the amount of plating adhered to the steel sheet by blowing air or an inert gas onto the steel sheet that is immersed through the sink roll and pulled out from the plating tank in a predetermined direction. Suppressing fluttering of a steel plate, which has a rectifying plate disposed on both surfaces of the steel plate below the plating bath surface in parallel to the steel plate surface, and reduces the average flow velocity of the steel plate accompanying flow between the steel plate and the rectifying plate to increase the static pressure. In the device
Provided with a warp detection device for detecting the warping of the steel sheet outside the plating tank, the warp correcting rolls for correcting warpage of a steel sheet which has been detected by said warp sensing device between the rectifier plate and the sink roll Provided,
The rectifying plates provided on both surfaces of the steel plate can be moved in the vertical direction and the front-rear direction by a position adjusting mechanism that is independently connected via an arm, and each rectifying plate has a ceramic fiber wound around the surface. A board,
The distance between the steel plate and the rectifying plate is 3 to 5 mm (excluding 5 mm) , the upper end position of the rectifying plate is set to a position sinking 5 to 10 mm from the bath surface, and the width of the rectifying plate is equal to or greater than the width of the steel plate. Yes.

請求項1記載の鋼板のフラッタリング抑制装置において、セラミックファイバーとは、アルミナやシリカを主成分とした人造無機繊維の総称であり、アルミナの含有量が40〜60%で、一部ジルコニア、クロミア等が含まれる非晶質の繊維であるアルミナシリカ繊維と、アルミナの含有量が70%以上の結晶質の繊維であるアルミナ繊維とがある。セラミックファイバーは溶融金属が付着し難い。また、不活性ガスとしては、窒素が好適に使用される。 The apparatus for suppressing fluttering of a steel sheet according to claim 1, wherein the ceramic fiber is a general term for artificial inorganic fibers mainly composed of alumina or silica, and the content of alumina is 40 to 60%, and partly zirconia or chromia. There are alumina silica fibers which are amorphous fibers containing etc. and alumina fibers which are crystalline fibers having an alumina content of 70% or more. Ceramic fibers are difficult to adhere to molten metal. Further , nitrogen is preferably used as the inert gas.

また、鋼板の両面に整流板を設けることにより、より鋼板の振動が抑えられると共に、鋼板随伴流れが十分に発達するのを妨げることができる。これによって、鋼板に伴ってめっき浴上に持ち上げられるめっき量が減少し、ガスワイピングが少ない圧力、風量で可能であり、しかも、めっきのさざ波模様が抑えられて表面の外観が綺麗な鋼板を製造することができる。 Moreover, by providing a baffle plate on both surfaces of a steel plate, the vibration of the steel plate can be further suppressed, and the accompanying flow of the steel plate can be prevented from sufficiently developing. This reduces the amount of plating that can be lifted onto the plating bath along with the steel plate, and enables gas wiping to be performed with less pressure and air flow, while producing a steel plate with a beautiful surface appearance that suppresses the ripple pattern of plating. can do.

そして、鋼板と整流板との距離が、3mm未満では鋼板と整流板とが接触する恐れがあり、5mm以上であると静圧が低下してフラッタリングの抑制効果が弱くなる。また、整流板の上端位置を浴面より5mm未満の沈んだ位置、つまり、浴面下5mm未満とすると、浴面に起こるさざ波によって整流板が浴面上に露出する場合があり、また、10mmを超えて沈んだ位置、つまり、浴面下10mmを超えると、鋼板随伴流れが再び発達する。 The distance between the steel and the rectifying plate is less than 3mm there is a risk of contact between the steel and the rectifying plate, the effect of suppressing fluttering becomes weak static pressure and Ru der than 5mm is lowered. Further, when the upper end position of the current plate is set to a position less than 5 mm below the bath surface, that is, less than 5 mm below the bath surface, the current plate may be exposed on the bath surface due to the ripples generated on the bath surface. If the position sinks beyond 10 mm, that is, exceeds 10 mm below the bath surface, the accompanying flow of the steel plate develops again.

請求項2記載の鋼板のフラッタリング抑制装置は、請求項1記載の鋼板のフラッタリング抑制装置において、前記整流板の位置を調整する前記位置調整機構が前記鋼板の引き上げられる側に設けられている。
請求項2記載の鋼板のフラッタリング抑制装置において、鋼板が引き上げられる側とは、ターンダウンロールで方向を変えられた鋼板をめっき槽内に導くスナウトとは反対側、いわゆる反スナウト側であり、通常、鋼板が引き上げられる側には連続溶融金属めっきを行う作業者がいる。また、位置調整機構は、手動ハンドル式、電気式、空気式等で作動するウォームジャッキやシリンダ等によって構成され、整流板を移動可能としている。
The steel plate fluttering suppression device according to claim 2 is the steel plate fluttering suppression device according to claim 1, wherein the position adjusting mechanism for adjusting the position of the rectifying plate is provided on a side where the steel plate is pulled up. .
In the fluttering suppressing device for a steel sheet according to claim 2, the side on which the steel sheet is pulled up is a side opposite to a snout for guiding the steel sheet whose direction has been changed by a turn-down roll into the plating tank, a so-called anti-snout side, Usually, there is an operator who performs continuous molten metal plating on the side where the steel sheet is pulled up. Further, the position adjusting mechanism is configured by a worm jack, a cylinder, or the like that operates by a manual handle type, an electric type, a pneumatic type, or the like, and is capable of moving the current plate.

請求項1及び2載の鋼板のフラッタリング抑制装置は、整流板は表面にセラミックファイバーを巻いた板であるので、溶融金属が付着し難く、浮遊するドロスを除去し易くなる。また、整流板の表面がセラミックファイバーによって被覆されているので、鋼板と接触した場合に鋼板が傷付くのを防止できる。
そして、鋼板の反りを検知する反り検知装置をめっき槽外に設けると共に、反り検知装置によって検知された鋼板の反りを矯正するための反り矯正ロールをシンクロールと整流板との間に設けているので、鋼板の反りが減少し、鋼板の幅方向のめっきの目付精度を向上させることができる。
また、鋼板と整流板との距離が3〜5mm(5mmを除く)であるので、鋼板随伴流れを極力抑えられ、鋼板と整流板とが接触し難くなる。さらにまた、整流板の上端位置が浴面より5〜10mm沈んだ位置に配置されるので、浴面上のドロスの清掃が容易になる。
In the steel plate fluttering suppressing device according to the first and second aspects, since the rectifying plate is a plate having ceramic fibers wound around the surface, the molten metal is difficult to adhere and the floating dross is easily removed. Further, since the surface of the rectifying plate is covered with the ceramic fiber, the steel plate can be prevented from being damaged when coming into contact with the steel plate.
And while providing the curvature detection apparatus which detects the curvature of a steel plate outside a plating tank, the curvature correction roll for correcting the curvature of the steel plate detected by the curvature detection apparatus is provided between the sink roll and the baffle plate. Therefore, the warpage of the steel sheet is reduced, and the basis weight accuracy of plating in the width direction of the steel sheet can be improved.
Further, since the distance between the steel plate and the rectifying plate is 3 to 5 mm (excluding 5 mm) , the accompanying flow of the steel plate can be suppressed as much as possible, and the steel plate and the rectifying plate are difficult to contact. Furthermore, since the upper end position of the baffle plate is disposed at a position where it sinks 5 to 10 mm from the bath surface, it becomes easy to clean the dross on the bath surface.

請求項記載の鋼板のフラッタリング抑制装置は、整流板の位置を調整する位置調整機構が鋼板の引き上げられる側に設けられているので、整流板を移動する作業が容易になる。 Fluttering suppression apparatus of the steel sheet according to the second aspect, since the position adjusting mechanism for adjusting the position of the current plate is provided on the side pulled up the steel sheet, thereby facilitating the task of moving the rectifying plate.

続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態につき説明し、本発明の理解に供する。
ここで、図1は本発明の一実施の形態に係る鋼板のフラッタリング抑制装置を適用した連続溶融金属めっき設備の説明図、図2は同連続溶融金属めっき設備でのめっき時の説明図、図3(A)は同連続溶融金属めっき設備のめっき時の整流板の位置を示す平面図、(B)は図3(A)のA−A断面図、図4(A)、(B)はそれぞれ同連続溶融金属めっき設備の清掃時の整流板の位置を示す説明図である。
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is an explanatory diagram of a continuous molten metal plating facility to which a steel plate fluttering suppressing device according to an embodiment of the present invention is applied, and FIG. 2 is an explanatory diagram at the time of plating in the continuous molten metal plating facility, FIG. 3 (A) is a plan view showing the position of the current plate at the time of plating in the continuous molten metal plating facility, (B) is a cross-sectional view taken along the line A-A in FIG. 3 (A), and FIGS. These are explanatory drawings which show the position of the baffle plate at the time of cleaning of the same continuous molten metal plating equipment, respectively.

図1及び図2を参照して、本発明の一実施の形態に係る鋼板のフラッタリング抑制装置10を適用した連続溶融金属めっき設備11について説明する。
連続溶融金属めっき設備11は、鋼板12をターンダウンロール13で方向転換して溶融金属の一例である亜鉛が貯留されているめっき槽14内のめっき浴15に引き込み、めっき槽14内に設けられたシンクロール16を介してめっき浴15に浸漬してめっきを行う設備である。鋼板12はターンダウンロール13からめっき浴15に導くスナウト17内を通過する。シンクロール16はアーム16aによって支持されている。
With reference to FIG.1 and FIG.2, the continuous molten metal plating equipment 11 to which the fluttering suppression apparatus 10 of the steel plate which concerns on one embodiment of this invention is applied is demonstrated.
The continuous molten metal plating facility 11 is provided in the plating tank 14 by turning the steel plate 12 with a turn-down roll 13 and drawing it into a plating bath 15 in a plating tank 14 in which zinc, which is an example of a molten metal, is stored. In this case, the plating is performed by dipping in the plating bath 15 through the sink roll 16. The steel plate 12 passes through a snout 17 guided from the turn-down roll 13 to the plating bath 15. The sink roll 16 is supported by the arm 16a.

連続溶融金属めっき設備11では、めっき槽14から所定方向に引き出される鋼板12に対して両面側に対向して設けられたガスワイピングノズル18、19から空気を吹き出して鋼板12に付着しためっき量を均一に制御している。また、鋼板12の反りを検知する図示しないうず電流検知式の反り検知装置がめっき槽14外の鋼板12の幅方向に3カ所以上設置され、この反り検知装置によって検知された鋼板12の反りを矯正するための反り矯正ロール20、21がめっき槽14内に設置されている。 In the continuous molten metal plating facility 11, the amount of plating adhered to the steel plate 12 by blowing air from the gas wiping nozzles 18, 19 provided opposite to both sides of the steel plate 12 drawn in a predetermined direction from the plating tank 14. Uniform control. Further, three or more eddy current detection type warpage detection devices (not shown) for detecting the warpage of the steel plate 12 are installed in the width direction of the steel plate 12 outside the plating tank 14, and the warpage of the steel plate 12 detected by the warpage detection device is detected. Warp correction rolls 20 and 21 for correcting are installed in the plating tank 14.

反り矯正ロール20、21は、シンクロール16で方向転換した鋼板12を挟み込むように配置され、反り検知装置によって検知された鋼板12の反りに対して反り矯正ロール20を反り矯正ロール21に所定量移動することにより、鋼板12を塑性加工して反りを矯正する。反り矯正ロール20は、図示しない駆動装置に接続されたアーム20aにより支持され、駆動装置によって所定量移動することができる。また、反り矯正ロール21は図示しないアームに支持されている。 The warp correction rolls 20 and 21 are disposed so as to sandwich the steel plate 12 whose direction has been changed by the sink roll 16 , and the warp correction roll 20 is applied to the warp correction roll 21 by a predetermined amount with respect to the warp of the steel plate 12 detected by the warp detection device. By moving, the steel plate 12 is plastically processed to correct warpage. The warp correction roll 20 is supported by an arm 20a connected to a drive device (not shown) and can be moved by a predetermined amount by the drive device. The warp correction roll 21 is supported by an arm (not shown).

シンクロール16とガスワイピングノズル18、19との間でめっき浴15の浴面22下部には、鋼板12の両面に、鋼板面と平行に整流板23、24が配置されている。整流板23、24は、表面にセラミックファイバーを巻いた板あるいはセラミックファイバー成形品自体で形成され、鋼板12と整流板23、24と間の鋼板随伴流れの平均流速を低下させて静圧を上昇させ、鋼板12のフラッタリングを抑制し、めっき精度を向上させている。整流板23、24は、セラミックファイバーがめっき浴15に露出しているので、溶融金属である亜鉛が付着し難くなっている。 Between the sink roll 16 and the gas wiping nozzles 18 and 19, below the bath surface 22 of the plating bath 15, rectifying plates 23 and 24 are arranged on both surfaces of the steel plate 12 in parallel with the steel plate surface. The rectifying plates 23 and 24 are formed of a ceramic fiber-wrapped plate or a ceramic fiber molded product itself, and increase the static pressure by reducing the average flow velocity of the steel plate accompanying flow between the steel plate 12 and the rectifying plates 23 and 24. Thus, fluttering of the steel plate 12 is suppressed and the plating accuracy is improved. Since the rectifying plates 23 and 24 have the ceramic fibers exposed to the plating bath 15, it is difficult for zinc, which is a molten metal, to adhere thereto.

図2に示すように、整流板23、24は、鋼板12との距離(b、c)をそれぞれ3〜5mm(5mmを除く)とし、その上端位置を浴面22より5〜10mm沈んだ位置、すなわち浴面22からの距離(a)を5〜10mmとして配置され、その幅は鋼板12の幅以上に形成されている。更に、整流板23、24の位置を調整する図示しない位置調整機構がめっき槽14外の鋼板12の引き上げられる側、すなわち反スナウト側(作業者から見て正面側)に設けられている。 As shown in FIG. 2, the rectifying plates 23 and 24 have distances (b, c) to the steel plate 12 of 3 to 5 mm (excluding 5 mm), and their upper end positions are submerged 5 to 10 mm from the bath surface 22. In other words, the distance (a) from the bath surface 22 is set to 5 to 10 mm, and the width is formed to be equal to or greater than the width of the steel plate 12. Furthermore, a position adjusting mechanism (not shown) for adjusting the positions of the current plates 23 and 24 is provided on the side where the steel plate 12 outside the plating tank 14 is pulled up, that is, on the anti-snout side (front side as viewed from the operator).

図1に示すように、整流板23、24は、ぞれぞれアーム25、26を介して位置調整機構と接続されている。整流板23、24は、位置調整機構によって上下方向、前後方向(反スナウト側とスナウト側)に移動可能となっている。フラッタリング抑制装置10は、整流板23、24、アーム25、26、及び位置調整機構によって構成されている。めっき浴15において、整流板24のスナウト側にはシンクロール16用のアーム16a、反り矯正ロール20用のアーム20a、及びスナウト17等が配置され、めっき槽14のスナウト側には位置調整機構を設けることができないが、反スナウト側に設けた位置調整機構にアーム26を介して鋼板12のスナウト側の整流板24を取付けることにより、整流板24を移動可能に設置することができる。 As shown in FIG. 1, the rectifying plates 23 and 24 are connected to the position adjusting mechanism via the arms 25 and 26, respectively. The rectifying plates 23 and 24 are movable in the vertical direction and the front-rear direction (on the anti-snout side and the snout side) by the position adjusting mechanism. The fluttering suppression device 10 is composed of rectifying plates 23 and 24, arms 25 and 26, and a position adjusting mechanism. In the plating bath 15, an arm 16 a for the sink roll 16, an arm 20 a for the warp correction roll 20, a snout 17, and the like are disposed on the snout side of the current plate 24, and a position adjusting mechanism is provided on the snout side of the plating tank 14. Although not provided, the rectifying plate 24 can be movably installed by attaching the rectifying plate 24 on the snout side of the steel plate 12 via the arm 26 to the position adjusting mechanism provided on the anti-snout side.

次に、図1及び図2を参照して、連続溶融金属めっき設備11を使用した連続溶融金属のめっき方法について説明する。
鋼板のフラッタリング抑制装置10の位置調整機構により、アーム25、26を介して、整流板23、24を、鋼板12との距離をそれぞれ3〜5mm(5mmを除く)に、また、その上端位置を浴面22下5〜10mmに配置する。これにより、ターンダウンロール13で方向転換され、溶融金属のめっき槽14に浸漬された鋼板12は、めっき槽14の下部に設けられたシンクロール16によって向きを変え、反り矯正ロール20、21で塑性加工されて反りが矯正され、更に整流板23、24の間を通って、めっき槽14から所定方向に引き出されることになる。
Next, a continuous molten metal plating method using the continuous molten metal plating facility 11 will be described with reference to FIGS. 1 and 2.
The position adjustment mechanism of the steel plate fluttering suppression device 10 causes the distance between the rectifying plates 23 and 24 and the steel plate 12 to be 3 to 5 mm (excluding 5 mm) via the arms 25 and 26, and the upper end position thereof. Is placed 5-10 mm below the bath surface 22. Thereby, the direction of the steel plate 12 changed in direction by the turn-down roll 13 and immersed in the molten metal plating tank 14 is changed by the sink roll 16 provided in the lower part of the plating tank 14, and the warp correction rolls 20 and 21 are used. The warping is corrected by plastic working, and further, it is drawn out from the plating tank 14 in a predetermined direction through the rectifying plates 23 and 24.

整流板23、24は浴面22下5〜10mmとなるように配置されているので、浴面22に浮かんでいる酸化亜鉛や鉄と亜鉛とアルミニウムの合金からなるドロス27が整流板23、24に接触することがない。また、整流板23、24は、鋼板12との距離を3〜5mm(5mmを除く)となるように配置されているので、鋼板随伴流れの平均流速を低下させて静圧を上昇させることができ、亜鉛の持ち上げ厚み(d、e)を所定の厚さにすることができる。 Since the rectifying plates 23 and 24 are disposed so as to be 5 to 10 mm below the bath surface 22, the dross 27 made of zinc oxide or an alloy of iron, zinc, and aluminum floating on the bath surface 22 is connected to the rectifying plates 23 and 24. There is no contact. Moreover, since the baffle plates 23 and 24 are arrange | positioned so that the distance with the steel plate 12 may be 3-5 mm (except 5mm) , it can raise the static pressure by reducing the average flow velocity of a steel plate accompanying flow. The zinc lifting thickness (d, e) can be set to a predetermined thickness.

めっき槽14から引き出された鋼板12は、ガスワイピングノズル18、19から吹き付けられる空気によって付着しためっき量が均一となる。ここで、反り検知装置によって検知された鋼板12の反りに対して、反り矯正ロール20を反り矯正ロール21側に所定量移動して鋼板12の幅方向の反りを矯正する。鋼板12の反りが減少するので、鋼板12の幅方向のめっきの目付精度を向上させることができる。また、鋼板12の両面にそれぞれ整流板23、24が配置されているので、めっき浴から引き上げられる鋼板12の振動が抑制され、鋼板12の長手方向のめっきの目付精度を向上させることもできる。 The steel sheet 12 drawn out from the plating tank 14 has a uniform plating amount attached by the air blown from the gas wiping nozzles 18 and 19. Here, with respect to the warp of the steel plate 12 detected by the warp detection device, the warp correction roll 20 is moved to the warp correction roll 21 side by a predetermined amount to correct the warp in the width direction of the steel plate 12. Since the warpage of the steel plate 12 is reduced, the basis weight of plating in the width direction of the steel plate 12 can be improved. Moreover, since the current plate 23 and 24 is arrange | positioned at both surfaces of the steel plate 12, the vibration of the steel plate 12 pulled up from a plating bath is suppressed, respectively, The fabric weight of the longitudinal plating of the steel plate 12 can also be improved.

また、整流板23、24によって、鋼板随伴流れが十分に発達するのを防ぐことができ、鋼板12に伴ってめっき浴面22上に持ち上げられるめっきの量が減少し、ガスワイピングノズル18、19から吹き付けるガスが少ない圧力、風量でよくなる。また、鋼板12のめっきのさざ波模様が抑えられるので、表面の外観が綺麗な鋼板を製造することができる。 Further, the flow straightening plates 23 and 24 can prevent the flow accompanying the steel plate from developing sufficiently, the amount of plating lifted onto the plating bath surface 22 along with the steel plate 12 is reduced, and the gas wiping nozzles 18 and 19 The gas to be blown from is improved with less pressure and air volume. Moreover, since the ripple pattern of the plating of the steel plate 12 can be suppressed, a steel plate with a beautiful surface appearance can be manufactured.

次に、図3(A)、(B)及び図4(A)、(B)を参照して、連続溶融金属めっき設備11のドロス27の除去方法について説明する。
図3(A)、(B)に示すように、通常、連続溶融金属めっき設備11において、鋼板12のスナウト側に整流板24、反スナウト側に整流板23がそれぞれ距離(b、c)を、また、浴面22と距離aを有して配置されている。
Next, with reference to FIG. 3 (A), (B) and FIG. 4 (A), (B), the removal method of the dross 27 of the continuous molten metal plating equipment 11 is demonstrated.
As shown in FIGS. 3 (A) and 3 (B), in the continuous molten metal plating facility 11, the distance (b, c) is normally set such that the rectifying plate 24 on the snout side of the steel plate 12 and the rectifying plate 23 on the anti-snout side respectively. In addition, they are arranged with a distance a from the bath surface 22.

図4(A)に示すように、鋼板12とスナウト側の整流板24との間にドロス27が浮かんでいる場合には、位置調整機構によってアーム26を介して整流板24をスナウト側に移動して、鋼板12と整流板24との隙間を広く取ることにより、ドロス27を掻き出し易くすることができる。また、図4(B)に示すように、鋼板12と反スナウト側の整流板23との間にドロス27が浮かんでいる場合には、位置調整機構によってアーム25を介して整流板23を反スナウト側に移動して、鋼板12と整流板23との隙間を広く取ることにより、ドロス27を掻き出し易くできる。 As shown in FIG. 4A, when the dross 27 floats between the steel plate 12 and the snout side rectifying plate 24, the position adjusting mechanism moves the rectifying plate 24 to the snout side via the arm 26. In addition, the dross 27 can be easily scraped by widening the gap between the steel plate 12 and the current plate 24. As shown in FIG. 4B, when the dross 27 floats between the steel plate 12 and the rectifying plate 23 on the anti-snout side, the rectifying plate 23 is counteracted via the arm 25 by the position adjusting mechanism. By moving to the snout side and widening the gap between the steel plate 12 and the current plate 23, the dross 27 can be easily scraped.

本発明は、前記した実施の形態に限定されるものではなく、本発明の要旨を変更しない範囲での変更は可能であり、例えば、前記した実施の形態や変形例の一部又は全部を組み合わせて本発明の鋼板のフラッタリング抑制装置を構成する場合も本発明の権利範囲に含まれる。
例えば、ガスワイピングノズルからは窒素などの不活性ガスを吹き付けてもよい。
The present invention is not limited to the above-described embodiment, and can be changed without changing the gist of the present invention. For example, a part or all of the above-described embodiment and modification examples are combined. The case where the steel plate fluttering suppression device of the present invention is configured is also included in the scope of the present invention.
For example, it may be blown inert gas such as nitrogen from gas wiping nozzle.

本発明の一実施の形態に係る鋼板のフラッタリング抑制装置を適用した連続溶融金属めっき設備の説明図である。It is explanatory drawing of the continuous molten metal plating equipment to which the fluttering suppression apparatus of the steel plate which concerns on one embodiment of this invention is applied. 同連続溶融金属めっき設備でのめっき時の説明図である。It is explanatory drawing at the time of plating with the same continuous molten metal plating equipment. (A)は同連続溶融金属めっき設備のめっき時の整流板の位置を示す平面図、(B)は図3(A)のA−A断面図である。(A) is a top view which shows the position of the baffle plate at the time of the plating of the same continuous molten metal plating equipment, (B) is AA sectional drawing of FIG. 3 (A). (A)、(B)はそれぞれ同連続溶融金属めっき設備の清掃時の整流板の位置を示す断面図である。(A), (B) is sectional drawing which shows the position of the baffle plate at the time of cleaning of the same continuous molten metal plating equipment, respectively.

符号の説明Explanation of symbols

10:鋼板のフラッタリング抑制装置、11:連続溶融金属めっき設備、12:鋼板、13:ターンダウンロール、14:めっき槽、15:めっき浴、16:シンクロール、16a:アーム、17:スナウト、18、19:ガスワイピングノズル、20:反り矯正ロール、20a:アーム、21:反り矯正ロール、22:浴面、23、24:整流板、25、26:アーム、27:ドロス 10: Steel plate fluttering suppression device, 11: Continuous molten metal plating equipment, 12: Steel plate, 13: Turn-down roll, 14: Plating tank, 15: Plating bath, 16: Sink roll, 16a: Arm, 17: Snout, 18, 19: Gas wiping nozzle, 20: Warpage correction roll, 20a: Arm, 21: Warpage correction roll, 22: Bath surface, 23, 24: Current plate, 25, 26: Arm, 27: Dross

Claims (2)

連続溶融金属めっきを行うに際し、溶融金属のめっき槽内のめっき浴中に浸漬されたシンクロールと、該めっき槽の上方に設置され、該シンクロールを介して浸漬され前記めっき槽から所定方向に引き出される鋼板に対して空気又は不活性ガスを吹き付けて該鋼板に付着しためっき量を均一に制御するガスワイピングノズルとの間のめっき浴面下部の前記鋼板の両面に、該鋼板面と平行に整流板を配置し、該鋼板と該整流板の間の鋼板随伴流れの平均流速を低下させて静圧を上昇させる鋼板のフラッタリング抑制装置において、
前記鋼板の反りを検知する反り検知装置を前記めっき槽外に設けると共に、前記反り検知装置によって検知された鋼板の反りを矯正するための反り矯正ロールを前記シンクロールと前記整流板との間に設け、
前記鋼板の両面に設けられた前記整流板はそれぞれ独立にアームを介して連結された位置調整機構によって上下方向及び前後方向に移動可能であり、しかも前記各整流板が表面にセラミックファイバーを巻いた板であって、
前記鋼板と前記整流板との距離を3〜5mm(5mmを除く)とし、前記整流板の上端位置を浴面より5〜10mm沈んだ位置とし、前記整流板の幅を前記鋼板の幅以上としたことを特徴とする鋼板のフラッタリング抑制装置。
When performing continuous molten metal plating, a sink roll immersed in a plating bath in a molten metal plating tank, and a sink roll installed above the plating tank and immersed in the predetermined direction from the plating tank Parallel to the steel plate surface on both sides of the steel plate below the plating bath surface with a gas wiping nozzle that uniformly controls the amount of plating adhered to the steel plate by blowing air or inert gas to the drawn steel plate In a fluttering suppression device for a steel plate that places a current plate and lowers the average flow velocity of the steel plate accompanying flow between the steel plate and the current plate to increase the static pressure,
A warp detection device for detecting warpage of the steel plate is provided outside the plating tank, and a warp correction roll for correcting the warpage of the steel plate detected by the warpage detection device is provided between the sink roll and the current plate. Provided,
The rectifying plates provided on both surfaces of the steel plate can be moved in the vertical direction and the front-rear direction by a position adjusting mechanism that is independently connected via an arm, and each rectifying plate has a ceramic fiber wound around the surface. A board,
The distance between the steel plate and the rectifying plate is 3 to 5 mm (excluding 5 mm) , the upper end position of the rectifying plate is set to a position sinking 5 to 10 mm from the bath surface, and the width of the rectifying plate is equal to or greater than the width of the steel plate. An apparatus for suppressing fluttering of a steel sheet, characterized in that:
請求項1記載の鋼板のフラッタリング抑制装置において、前記整流板の位置を調整する前記位置調整機構が前記鋼板の引き上げられる側に設けられていることを特徴とする鋼板のフラッタリング抑制装置。 The fluttering suppression device for a steel sheet according to claim 1, wherein the position adjusting mechanism for adjusting the position of the rectifying plate is provided on a side where the steel plate is pulled up.
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