JPH0448056A - Device for adjusting coating weight of hot dip metal coating - Google Patents
Device for adjusting coating weight of hot dip metal coatingInfo
- Publication number
- JPH0448056A JPH0448056A JP15507890A JP15507890A JPH0448056A JP H0448056 A JPH0448056 A JP H0448056A JP 15507890 A JP15507890 A JP 15507890A JP 15507890 A JP15507890 A JP 15507890A JP H0448056 A JPH0448056 A JP H0448056A
- Authority
- JP
- Japan
- Prior art keywords
- devices
- coating weight
- steel plate
- blade
- blades
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 title claims abstract description 11
- 239000011248 coating agent Substances 0.000 title abstract description 7
- 238000000576 coating method Methods 0.000 title abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 238000007747 plating Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 description 14
- 239000011701 zinc Substances 0.000 description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 13
- 238000005507 spraying Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、溶融金属めっきの目付量調整装置に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to an apparatus for adjusting the basis weight of molten metal plating.
〈従来の技術〉
例えば溶融亜鉛めっきラインにおける目付量を調整する
方法は、以前はロールにて鋼板を両面よりはさんで押付
力を制御することにより行っていたが、ロール周囲に亜
鉛が付着することによる手入れ頻度が多く、交換等に時
間を要する等の問題が多いため、最近では高圧空気や高
圧蒸気を吹き付ける高圧ガス吹付は式が主流となってい
る。<Conventional technology> For example, in the past, the method of adjusting the basis weight on a hot-dip galvanizing line was to control the pressing force by sandwiching a steel plate from both sides with rolls, but this caused zinc to adhere around the rolls. Due to this, there are many problems such as frequent maintenance and time required for replacement, etc., so recently, high-pressure gas spraying methods that spray high-pressure air or high-pressure steam have become mainstream.
第５図に従来の代表的な溶融亜鉛めっき装置を示す、綱
板ｉ ｃ、を溶融亜鉛浴２内のジンクロール３にて方向
を変えて矢印の方向へ進行し、浴上に配置されたノズル
６により、高圧ブロワ４で発生さ・ヒた高圧空気または
高圧蒸気を配管５を通し噴出して目付量を調整する。Fig. 5 shows a typical conventional hot-dip galvanizing apparatus, in which a steel plate IC is changed direction at a zinc roll 3 in a hot-dip zinc bath 2, moves in the direction of the arrow, and is placed on the bath. The nozzle 6 blows out high-pressure air or high-pressure steam generated by the high-pressure blower 4 through the pipe 5 to adjust the basis weight.
〈発明が解決しようとする課題〉
しかしながら、前記の非接触式の高圧ガス吹付は式には
次のような欠点がある。<Problems to be Solved by the Invention> However, the non-contact high-pressure gas spraying method described above has the following drawbacks.
即ち、高圧空気等を吹き付けて溶融亜鉛を飛ばすので、
亜鉛スプラッシュの飛散によりノズルを詰まらせる。ま
た、鋼板端部がオーバーコーテイングとなるなど目付量
が均等に得られない。In other words, the molten zinc is blown away by blowing high-pressure air, etc.
Zinc splash will clog the nozzle. Additionally, the edges of the steel plate are overcoated, making it impossible to obtain an even basis weight.
更に、空気、水蒸気を吹出すので溶融亜鉛が酸化し、ド
ロスが多く発生し、ドロスが鋼板に付着し品質欠陥とな
るばかりか、ドロスの除去作業や亜鉛原単位の…出など
の欠点を有している。Furthermore, since air and steam are blown out, the molten zinc is oxidized and a large amount of dross is generated.The dross not only adheres to the steel plate and causes quality defects, but also has disadvantages such as the need to remove dross and increase the zinc consumption rate. are doing.
最も大きな欠点は、高圧空気または高圧蒸気をノズルか
ら噴出するための騒音がひどく、作業者は耳栓を必要と
する作業環境の悪さにあった。The biggest drawback was that the high-pressure air or high-pressure steam ejected from the nozzle made a lot of noise, creating a poor working environment that required workers to wear earplugs.
本発明は、このような問題を解決した溶融金属めっきの
目付量調整装置を提供することを目的とする。An object of the present invention is to provide a coating weight adjustment device for hot-dip metal plating that solves such problems.
＜！ＩＩ！を解決するための手段〉
本発明は、溶融金属浴から引上げられる鋼板を両面から
はさんで鋼板に付着した溶融金属を所定の目付量にする
ワイピングブレードと、該ワイピングブレードを鋼板に
押付けるための圧下装置と、前記ワイピングブレードを
鋼板の輻方向に摺動させる摺動装置とからなるとともに
、前記ワイピングブレードの少なくとも一方の刃部に、
複数の切欠きを設けたことを特徴とする溶融金属めっき
の目付量調整装置である。<! II! Means for Solving the Problems> The present invention provides a wiping blade that holds a steel plate pulled up from a molten metal bath from both sides and adjusts the molten metal adhering to the steel plate to a predetermined basis weight, and a method for pressing the wiping blade against the steel plate. and a sliding device that slides the wiping blade in the radial direction of the steel plate, and at least one blade portion of the wiping blade has a
This is an apparatus for adjusting the basis weight of molten metal plating, which is characterized by having a plurality of notches.
〈作用〉
本発明の装置によれば、高圧空気等を噴出するノズルが
ないので、騒音がまったくなく、亜鉛のスプラッシュが
発生せず、またドロスも著しく減少でき、品質の向上と
亜鉛原単位の軽減がなされる。<Function> According to the device of the present invention, there is no nozzle that blows out high-pressure air, etc., so there is no noise at all, no zinc splash occurs, and dross can be significantly reduced, improving quality and reducing zinc consumption. A reduction is made.
ブレードが鋼板の両面側に配置され、鋼板を押し当てる
ので、鋼板の振れバクツキを防止でき、両面の目付精度
が向上する。また、ワイピングブレードを常時水平方向
に移動させるので、固定式に比べてスジ模様やスリ疵を
防止できる。Since the blades are arranged on both sides of the steel plate and press the steel plate against each other, it is possible to prevent the steel plate from swinging and to improve the accuracy of the area weight on both sides. In addition, since the wiping blade is constantly moved in the horizontal direction, it is possible to prevent streaks and scratches compared to a fixed type.
また、高圧ガス吹付は式では、ライン速度が変化すると
目付量も変わるが、プレ−１′式では速度変化に影響さ
れず均等な目付■が得られる。Furthermore, in the high-pressure gas spraying formula, the basis weight changes as the line speed changes, but in the Play-1' method, a uniform basis weight (2) can be obtained without being affected by speed changes.
日付■は、ブレードの板面に押付ける圧下刃を調整する
ことにより調整できるが、本発明ではブレードの刃部に
複数個の切欠きを設けである。これは次の理由による。The date (2) can be adjusted by adjusting the reduction blade pressed against the plate surface of the blade, but in the present invention, a plurality of notches are provided in the blade portion of the blade. This is due to the following reason.
即ち、圧下刃を大きくするに従って、目付量少なくなり
、従来の高圧ガス吹付は式で不可能な１００ｇ／ｎｆ以
下の薄目付量も容品に可能となる。That is, as the reduction blade becomes larger, the basis weight decreases, and it becomes possible to produce a container with a thin basis weight of 100 g/nf or less, which is impossible with conventional high-pressure gas spraying.
一方、圧下刃を小さくすると目付量は多（なるが、限界
がある。この限界以上に厚目付にするには、鋼板とプレ
−１′間に隙間を設ける必要があるが、これでは安定し
た制御は困難であり、また板のバクツキによるスリ疵発
生の問題もある。On the other hand, if the reduction blade is made smaller, the area weight will increase (but there is a limit. To increase the area weight beyond this limit, it is necessary to create a gap between the steel plate and the plate 1', but this will result in a stable Control is difficult, and there is also the problem of scratches occurring due to bounce of the board.
そこで、本発明ではブレードの刃部に複数個の切欠きを
設け、この部分での目付量を厚くするとともにブレード
を鋼板の輻方向に往復摺動させて目付量を均一化させる
。この時、多少の凹凸が残るが、これは表面張力により
緩和され、問題はない。Therefore, in the present invention, a plurality of notches are provided in the blade portion of the blade to increase the area weight at these portions and to make the area weight uniform by sliding the blade back and forth in the radial direction of the steel plate. At this time, some unevenness remains, but this is alleviated by the surface tension and is not a problem.
更に、鋼板の両面におけるブレードの圧下刃に差をつけ
ることにより、差厚めつきも簡単にできる。このとき、
一方のブレードには切欠のないもの、もう一方のブレー
ドには切欠のあるものを用いるようにしてもよい。Furthermore, by creating a difference in the rolling edges of the blades on both sides of the steel plate, it is possible to easily apply different thicknesses. At this time,
It is also possible to use one blade without a notch and the other blade with a notch.
〈実施例〉 本発明の一実施例を図面に基づいて説明する。<Example> An embodiment of the present invention will be described based on the drawings.
第１図は本発明の装置の一実施例の側面図である。第２
図は同じ（平面図であり装置の片側を示す。FIG. 1 is a side view of one embodiment of the device of the present invention. Second
The figures are the same (top view, showing one side of the device).
第１．２図において、７はセラミック等の耐熱・耐摩耗
性材質製のワイピングブレードであり、鋼板１をはさみ
両面側の同一位置に設置されており、溶融亜鉛を鋼板１
面よりかき落とす働きをする。ワイピングブレード７は
上側キャップ９と下側板８との間にボルト１０にて挾持
され、ワイパー装置１９を構成している。In Fig. 1.2, 7 is a wiping blade made of a heat-resistant and wear-resistant material such as ceramic, and is installed at the same position on both sides of the steel plate 1.
It works to scrape off the surface. The wiping blade 7 is held between an upper cap 9 and a lower plate 8 by bolts 10, and constitutes a wiper device 19.
ワイパー装置１９はフレーム１４を介して、固定架台１
５に固定されている。The wiper device 19 is connected to the fixed frame 1 via the frame 14.
It is fixed at 5.
そして、ワイパー装置１９は昇降シリンダ１２により、
第１図の矢印の方向へ移動可能であり、鋼板Ｉへの押付
は圧力は、昇降用エアーバルブ１７及び減圧弁１８によ
り訓節可能である。The wiper device 19 is operated by the lifting cylinder 12.
It can be moved in the direction of the arrow in FIG.
また、ワイパー装置１９は、移動シリンダ１３及びタイ
マーによる移動用エアーバルブ１６の切替により板輻方
向に往復摺動する。Further, the wiper device 19 reciprocates in the plate radius direction by switching the moving air valve 16 using the moving cylinder 13 and a timer.
ワイピングブレード７は、第３図に示すように、綱板１
に接触する面にＶ状の切欠き２０を設け、溶融亜鉛２の
付着量を調整可能とする。The wiping blade 7 is attached to the rope plate 1 as shown in FIG.
A V-shaped notch 20 is provided on the surface that comes into contact with the molten zinc 2, so that the amount of molten zinc 2 deposited can be adjusted.
例えば、ワイピングブレード７の厚さ（を５閣、切欠き
２０の深さｄを０．５−切欠き２０のピッチＰをＩＯ−
とし、ライン速度２００ｍｐ−で運転した場合のめっき
目付量とワイピングブレード７の押付は圧力との関係は
、第４図Ａに示すような結果が得られた。これに対し、
ワイピングブレード７に切欠き２０をまったく設けない
場合は、Ｂのような結果の薄目付となった。For example, the thickness of the wiping blade 7 is 5, the depth d of the notch 20 is 0.5, the pitch P of the notch 20 is IO-
The relationship between the plating weight and the pressing pressure of the wiping blade 7 when operating at a line speed of 200 mp- was obtained as shown in FIG. 4A. On the other hand,
When the wiping blade 7 was not provided with any notch 20, the result was a light weight as shown in B.
ここで、ワイピングブレード７の板輻方向への往復摺動
は、タイマーにより２回／秒の作動とした。Here, the reciprocating sliding of the wiping blade 7 in the plate radius direction was performed twice/second by a timer.
これらの条件では、いずれも品質欠陥、外観上の問題は
生じなかった。Under these conditions, no quality defects or appearance problems occurred.
なお、上記実施例では切欠きの形状はＶ状としたが、角
状３円弧杖などでもよい。In the above embodiment, the shape of the notch is V-shaped, but it may also be a square, three-arc cane, or the like.
〈発明の効果〉
以上説明したように本発明により、騒音の発生が全くな
くなり、かつ、従来のエアーワイパ一方式における高圧
ガスの吹付けによる多量のドロスの発住、ｔ！ａ融金属
のスプラッシュによる品質欠陥。<Effects of the Invention> As explained above, the present invention completely eliminates the generation of noise, and eliminates the generation of a large amount of dross due to the spraying of high-pressure gas in the conventional air wiper type. a Quality defects due to molten metal splash.
ノズルの孔を埋めることによるノズルの手入れの必要や
目付量の不均一等の問題が解消し、また、栄、冷却しな
いのでスパングル模様が大きくなり、外観が良くなる。Problems such as the need to maintain the nozzle due to filling the nozzle hole and non-uniformity of the basis weight are solved, and since there is no cooling, the spangle pattern becomes larger and the appearance improves.
更に、電力コストが低下する等の効果を有する。Furthermore, it has the effect of reducing power costs.
第１図は本発明の装置の一実施例の側面図、第２図は同
じく平面図であり、装置の片側を示す。
第３図（ａ）は本発明の装置に用いるワイピングブレー
ドの形状の一例を示す平面図、第３図（ハ）は同じく側
面図である。第４図は本発明のワイピングブレードの押
付は圧力と亜鉛目付量との関係を示すグラフである。第
５図は従来のエアーワイパ一方式のめっき目付量の調整
装置を備えた溶融亜鉛めっき装置の説明図である。
ｌ・・・鋼板、 ２・・・溶融亜鉛、３・・
・ジンクロール、 ４・・・圧空プロワ−５・・・配
管、 ６・・・ノズル、７・・・ワイピング
ブレード、
８・・・下側板、 ９・・・上側キャップ、１０
・・・ボルト、 １１・・・連結バー１２・・・
昇降シリンダ、 １３・・・移動シリンダ、１４・・・
フレーム、 １５・・・固定架台、１６・・・１％
ＩＩＪ用エフェアーパルプ７・・・昇降用エアーパル
プ、
１８・・・減圧弁、 １９・・・ワイパー装置、
２０・・・切欠き。
第１図
第２図FIG. 1 is a side view of an embodiment of the device of the present invention, and FIG. 2 is a plan view of the same, showing one side of the device. FIG. 3(a) is a plan view showing an example of the shape of a wiping blade used in the apparatus of the present invention, and FIG. 3(c) is a side view of the same. FIG. 4 is a graph showing the relationship between the pressing pressure of the wiping blade of the present invention and the amount of zinc coating. FIG. 5 is an explanatory diagram of a hot-dip galvanizing apparatus equipped with a conventional air wiper type plating area weight adjusting device. l... Steel plate, 2... Molten zinc, 3...
- Zinc roll, 4... Compressed air blower 5... Piping, 6... Nozzle, 7... Wiping blade, 8... Lower side plate, 9... Upper cap, 10
...Bolt, 11...Connection bar 12...
Lifting cylinder, 13...Moving cylinder, 14...
Frame, 15...Fixed frame, 16...1%
Efair pulp for IIJ 7...air pulp for lifting, 18...pressure reducing valve, 19...wiper device,
20...notch. Figure 1 Figure 2
Claims (1)
鋼板に付着した溶融金属を所定の目付量にするワイピン
グブレードと、該ワイピングブレードを鋼板に押付ける
ための圧下装置と、前記ワイピングブレードを鋼板の輻
方向に摺動させる摺動装置とからなるとともに、前記ワ
イピングブレードの少なくとも一方の刃部に、複数の切
欠きを設けたことを特徴とする溶融金属めっきの目付量
調整装置。a wiping blade that sandwiches a steel plate pulled up from a molten metal bath from both sides to reduce the molten metal adhering to the steel plate to a predetermined basis weight; a rolling device for pressing the wiping blade against the steel plate; 1. An area weight adjustment device for molten metal plating, comprising a sliding device for sliding in a radial direction, and a plurality of notches provided in at least one blade portion of the wiping blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15507890A JPH0448056A (en) | 1990-06-15 | 1990-06-15 | Device for adjusting coating weight of hot dip metal coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15507890A JPH0448056A (en) | 1990-06-15 | 1990-06-15 | Device for adjusting coating weight of hot dip metal coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448056A true JPH0448056A (en) | 1992-02-18 |
Family
ID=15598175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15507890A Pending JPH0448056A (en) | 1990-06-15 | 1990-06-15 | Device for adjusting coating weight of hot dip metal coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448056A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09209101A (en) * | 1996-01-30 | 1997-08-12 | Nippon Steel Corp | High-speed hot dip plating method and device |
| WO2013164493A1 (en) * | 2012-04-30 | 2013-11-07 | Eurostradale, S.L. | Device for reducing the thickness of a metallic coating on a metallic sheet |
-
1990
- 1990-06-15 JP JP15507890A patent/JPH0448056A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09209101A (en) * | 1996-01-30 | 1997-08-12 | Nippon Steel Corp | High-speed hot dip plating method and device |
| WO2013164493A1 (en) * | 2012-04-30 | 2013-11-07 | Eurostradale, S.L. | Device for reducing the thickness of a metallic coating on a metallic sheet |
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