JPH0448057A - Device for adjusting coating weight of hot dip metal coating - Google Patents
Device for adjusting coating weight of hot dip metal coatingInfo
- Publication number
- JPH0448057A JPH0448057A JP15508290A JP15508290A JPH0448057A JP H0448057 A JPH0448057 A JP H0448057A JP 15508290 A JP15508290 A JP 15508290A JP 15508290 A JP15508290 A JP 15508290A JP H0448057 A JPH0448057 A JP H0448057A
- Authority
- JP
- Japan
- Prior art keywords
- coating weight
- steel plate
- adjusting
- coating
- wiper
- 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 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 239000011248 coating agent Substances 0.000 title abstract description 10
- 238000000576 coating method Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 238000007790 scraping Methods 0.000 claims abstract description 4
- 238000007747 plating Methods 0.000 claims description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 13
- 229910052725 zinc Inorganic materials 0.000 description 13
- 239000011701 zinc Substances 0.000 description 13
- 238000007664 blowing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 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、鋼板に連続的に溶融亜鉛や溶融アルミニウム
等の溶融金属めっきをする樫のめっき目付量の調整装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for adjusting the coating weight of oak, which continuously coats a steel plate with molten metal such as molten zinc or molten aluminum.
〈従来の技術〉
溶融亜鉛等の溶融金属めっきにおけるめっき目付ｍの調
整装置は、以前はロールによる方式もあったが、ロール
の保守等の欠点により使用されなくなり、現在はエアー
ワイパ一方式が主流として使用され°ζいる。<Conventional technology> In the past, there was a roll-based system for adjusting the plating density (m) in hot-dip metal plating such as hot-dip zinc, but due to drawbacks such as the maintenance of the rolls, it is no longer used, and now the air wiper system is the mainstream. It is used °ζ.
エアーワイパ一方式は、スリットノズルより圧空を鋼板
に吹き付け、付着した溶融金属をかき落す方式であり、
その圧菟の圧力を調整することにより目付量を調整する
ものである。The air wiper type blows compressed air onto the steel plate from a slit nozzle to scrape off adhering molten metal.
The basis weight is adjusted by adjusting the pressure of the pressure.
エアーワイパ一方式について、更に図により説明する。The air wiper type will be further explained with reference to the drawings.
第４図は、従来の代表的な溶融亜鉛めっきラインの側面
図を示ず、鋼板１は、熱処理炉２内のデフレクタ−ロー
ル３を経由して、溶融亜鉛４をためた亜鉛ポット５内の
ジンクロール６を経由し、上方の矢印の方向へ導かれる
６
亜鉛ボット５の液面直上には、亜鉛目付量を調整するス
リ７ ）ノズル７が綱板ｌの両面に配置され、圧空ブロ
ワ−８から圧空が送られ、スリットノズル７から吹き出
して、圧空の圧力、Ｉを可変して所定の目付量を得てい
る。FIG. 4 does not show a side view of a typical conventional hot-dip galvanizing line, and the steel sheet 1 is passed through a deflector roll 3 in a heat treatment furnace 2 into a zinc pot 5 containing molten zinc 4. Directly above the liquid surface of the zinc bot 5, nozzles 7 are arranged on both sides of the steel plate 1, and nozzles 7 are arranged on both sides of the steel plate 1, and a compressed air blower Compressed air is sent from 8 and blown out from the slit nozzle 7, and the pressure of the compressed air, I, is varied to obtain a predetermined basis weight.
〈発明が解決しようとするｉ＊ｉ！！ｌ＞しかし、エア
ーワイパ一方式の目付量調整装置は、圧空をスリットノ
ズルより吹き出すために、騒音の発生がまぬがれない、
その騒音は、人の会話も側近ではできないくらい大であ
り、耳栓の着用が義務付けられている。<i*i that the invention attempts to solve! ! l>However, the air wiper one-type fabric weight adjustment device blows out compressed air from a slit nozzle, which inevitably generates noise.
The noise is so loud that it is difficult for people close to you to have a conversation, and it is compulsory to wear earplugs.
又、圧空の吹き出しにより、溶融亜鉛表面での酸化が促
進され、多量のドロスが発生し、ドロスの綱板への付着
による欠陥やドロス排出処理による亜鉛使用量の増加等
の問題があった。In addition, the blowing of compressed air promotes oxidation on the surface of molten zinc, generating a large amount of dross, causing problems such as defects due to adhesion of dross to steel plates and an increase in the amount of zinc used due to dross discharge treatment.
本発明は、このような問題を解決した溶融金属めっきに
おけるめっき目付量の調整装置を捷供することを目的と
する。An object of the present invention is to provide an apparatus for adjusting the coating weight in hot-dip metal plating, which solves such problems.
〈課題を解決するための手段〉
本発明は、溶融金属の浴面上方で鋼板の両面側に、それ
ぞれ鋼板に付着した溶融金属をかき落すセラミック等の
耐熱耐摩耗性のナイフを備えたワイパーバーを配置し、
前記ワイパーバーを綱板の進行方向と直角方向に常時往
復摺動させる装置と、前記ワイパーバーをｍｌ＆面に押
し当てる圧下刃を調整してめっき目付量を調整できる装
置とを設けたことを特徴とする溶融金属めっきにおける
めっき目付量の調整装置である。<Means for Solving the Problems> The present invention provides a wiper bar equipped with heat-resistant and wear-resistant knives made of ceramic or the like for scraping off molten metal adhering to the steel plate on both sides of the steel plate above the bath surface of the molten metal. Place the
It is characterized by being provided with a device that constantly slides the wiper bar back and forth in a direction perpendicular to the traveling direction of the steel plate, and a device that can adjust the plating area weight by adjusting the reduction blade that presses the wiper bar against the ml & surface. This is a device for adjusting the plating area weight in molten metal plating.
く作用〉
ワイパーバ一方式は、圧空を吹き付けに使用しないので
、騒音がまったく出さないものである。Function: The one-way wiper bar type does not use compressed air for blowing, so it does not make any noise.
ワイパーバ一方式により溶融亜鉛をかき落すことにより
騒音を防止できる。Noise can be prevented by scraping off molten zinc using a wiper bar.
ワイパーバーは固定式では鋼板面にスジ状の品質欠陥を
生しるので、常時摺動させるものとする。If the wiper bar is fixed, it will cause quality defects in the form of streaks on the surface of the steel plate, so it must be kept sliding at all times.
又、目付量はワイパーバーを板面に押し付ける圧下刃を
可変することにより調整するようにする。Further, the basis weight is adjusted by varying the reduction blade that presses the wiper bar against the plate surface.
又、エアーワイパ一方式の圧空の吹き付けにより、亜鉛
表面に多くのドロスを生しさせるので、そのｔＪＦ出装
置を必要とし、また亜鉛のｍ失■が大で、更にドロスが
そのまま鋼板に付着する品質欠陥等の欠点がある他に圧
空吹き付けにより、溶融亜鉛がスプラッシュとなり飛び
ｎ（す、ノズルの孔を埋めるので、ノズルの手入れや目
付量の不均一が生じていたが、本発明の方式であれば、
これらの欠点が全て解消できる。In addition, since a large amount of dross is generated on the zinc surface by blowing compressed air using an air wiper, a tJF extraction device is required, and the loss of zinc is large, and the dross adheres directly to the steel plate. In addition to drawbacks such as defects, the method of the present invention does not require the maintenance of the nozzle and unevenness in the area weight because the molten zinc splashes and fills the holes in the nozzle due to compressed air spraying. Ba,
All of these drawbacks can be overcome.
又、圧空温度は溶融亜鉛温度より低いため、圧空の吹き
付けにより鋼板面の亜鉛の結晶（スパングル）は小さく
なるが、本発明では急冷却がないので、大きなスパング
ルを得ることができ、商品価埴を上げることができる。In addition, since the compressed air temperature is lower than the molten zinc temperature, zinc crystals (spangles) on the surface of the steel sheet become smaller due to the spraying of compressed air, but since there is no rapid cooling in the present invention, large spangles can be obtained and the product price decreases. can be raised.
〈実施例〉 本発明の装置の一実施例を図面に基づいて説明する。<Example> An embodiment of the device 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を側方から見た図であ
り、鋼板１の左側は装置中央部の断面図、綱板ｌの右側
は側面図である。第２図は本発明の装置の片側を示した
平面図である。FIG. 1 is a side view of an embodiment of the device of the present invention, with the left side of the steel plate 1 being a sectional view of the center of the device, and the right side of the steel plate 1 being a side view. FIG. 2 is a plan view showing one side of the device of the invention.
第１．２図において、ワイパーバー９は、セラミック等
の耐熱耐摩耗のナイフｌＯを上キャップ１！と下キャッ
プ１２間に挿入されボルト１３により結合された構造に
なっている。In Fig. 1.2, the wiper bar 9 has a heat-resistant and wear-resistant knife lO made of ceramic or the like and an upper cap 1! and a lower cap 12, and are connected by bolts 13.
ワイパーバー９は、エアーシリンダ１４により矢印Ａ方
向に移動可能であり、ナイフ！０を綱板ｌの面に押し付
けている。押し付は力はエアー減圧弁１５により圧下刃
の調整が可能で、これにより目付量を可変できる。 １
６は、ワイパーバー９の圧下・開放を行うエアー減圧弁
である。Ｓｉ板１の溶接部ではワイパーバー９の圧下を
開放することにより、ナイフＩＯの破ｔｎを防止する。The wiper bar 9 is movable in the direction of arrow A by an air cylinder 14, and the wiper bar 9 is movable in the direction of arrow A. 0 is pressed against the surface of the rope plate l. The pressing force can be adjusted by the reduction blade using the air pressure reducing valve 15, thereby making it possible to vary the basis weight. 1
6 is an air pressure reducing valve that lowers and releases the wiper bar 9. By releasing the wiper bar 9 at the welded portion of the Si plate 1, the knife IO is prevented from breaking.
また、ワイパーバー９の端部に、摺動用エアーシリンダ
１７がタレビスピン１８にて接続され、エアーホース１
９により電磁弁２０に導かれ、タイマー２１により設定
された時間により、常時矢示Ｂ方向に往復摺動する。Further, a sliding air cylinder 17 is connected to the end of the wiper bar 9 with a Talebis pin 18, and an air hose 1
9 to a solenoid valve 20, and constantly slides back and forth in the direction of arrow B according to a time set by a timer 21.
次に、第３図は本発明の装置によるワイパーバーの圧下
刃と目付量の関係の例を示すグラフである。ライン速度
２００−ρ−でナイフ１０を摺動圧１ｆ！１１１０ｍで
、１回／２秒間Ｍで摺動させた場合の目付量の変化を示
す。Next, FIG. 3 is a graph showing an example of the relationship between the reduction blade of the wiper bar and the area weight according to the device of the present invention. The sliding pressure of the knife 10 is 1f at a line speed of 200-ρ-! It shows the change in the basis weight when sliding at M for 1 time/2 seconds at 1110 m.
〈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圧空
の吹き付けによる多量のドロスの発生、溶融金属のスプ
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 quality defects due to the generation of a large amount of dross and splash of molten metal due to the blowing of compressed air in the conventional air wiper type.
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、急冷却しない
のでスパングル模様が大きくなり、外観が良くなる。更
に、薄目付の調整が容易となること、電力コストが低下
する等の効果を有する。Problems such as the need for nozzle maintenance due to filling the nozzle holes and non-uniformity of the basis weight are eliminated, and since rapid cooling is not performed, the spangle pattern becomes larger and the appearance improves. Furthermore, there are effects such as ease of adjusting the thinness and reduction of electric power costs.
第１図は本発明の装置の一実施例を側方から見た図であ
り、鋼板の左側は装置中央部の断面図、鋼板の右側は側
面図である。第２図は本発明の装置の片側を示した平面
図である。第３図は本発明の装置によるワイパーバーの
圧下刃と目付量の関係の例を示すグラフである。第４図
は従来のエアーワイパ一方式のめっき目付量の洲整装宜
を備えた溶融亜鉛めっき装置の説明図である。
６・・・ジンクロール、
８・・・圧空ブロワ−
１Ｏ・・・ナイフ、
１２・・・下キャップ、
１４・・・エアーシリンダ
！６・・・エアー１を磁弁、
１７・・・摺動用エアーシリ
１８・・・タレビスビン、
２０・・・電磁弁、
７・・・スリットノズル、
９・・・ワイパーパー
１１・・・上キ＋ンブ、
１３・・・ボルト、
１５・・・エアー減圧弁、
ンダ、
１９・・・エアーホース、
２１・・・タイマー
ト・・綱板、 ２・・・熱処理炉、３・・・
デフレクタ−ロール、FIG. 1 is a side view of one embodiment of the device of the present invention, with the left side of the steel plate being a sectional view of the center of the device, and the right side of the steel plate being a side view. FIG. 2 is a plan view showing one side of the device of the invention. FIG. 3 is a graph showing an example of the relationship between the reduction blade of the wiper bar and the area weight according to the device of the present invention. FIG. 4 is an explanatory diagram of a conventional hot-dip galvanizing apparatus equipped with a one-type air wiper method for adjusting the plating area weight. 6... Zin roll, 8... Compressed air blower 1O... Knife, 12... Lower cap, 14... Air cylinder! 6... Air 1 to magnetic valve, 17... Sliding air cylinder 18... Talebis bottle, 20... Solenoid valve, 7... Slit nozzle, 9... Wiper par 11... Upper key + 13... Bolt, 15... Air pressure reducing valve, 19... Air hose, 21... Timer... Steel plate, 2... Heat treatment furnace, 3...
deflector roll,
Claims (1)
に付着した溶融金属をかき落すセラミック等の耐熱耐摩
耗性のナイフを備えたワイパーバーを配置し、前記ワイ
パーバーを鋼板の進行方向と直角方向に常時往復摺動さ
せる装置と、前記ワイパーバーを鋼板面に押し当てる圧
下刃を調整してめっき目付量を調整できる装置とを設け
たことを特徴とする溶融金属めっきにおけるめっき目付
量の調整装置。Wiper bars each equipped with a heat-resistant and wear-resistant knife made of ceramic or the like for scraping off molten metal adhering to the steel plate are arranged on both sides of the steel plate above the bath surface of the molten metal, and the wiper bar is aligned in the direction of movement of the steel plate. A device for adjusting the plating surface weight in molten metal plating, characterized by being provided with a device that constantly slides the wiper bar back and forth in the right angle direction, and a device that can adjust the plating surface weight by adjusting the reduction blade that presses the wiper bar against the steel plate surface. Adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15508290A JPH0448057A (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 |
|---|---|---|---|
| JP15508290A JPH0448057A (en) | 1990-06-15 | 1990-06-15 | Device for adjusting coating weight of hot dip metal coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448057A true JPH0448057A (en) | 1992-02-18 |
Family
ID=15598264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15508290A Pending JPH0448057A (en) | 1990-06-15 | 1990-06-15 | Device for adjusting coating weight of hot dip metal coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8079323B2 (en) | 2004-04-13 | 2011-12-20 | Mitsubishi-Hitachi Metals Machinery, Inc. | Liquid wiping apparatus |
-
1990
- 1990-06-15 JP JP15508290A patent/JPH0448057A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8079323B2 (en) | 2004-04-13 | 2011-12-20 | Mitsubishi-Hitachi Metals Machinery, Inc. | Liquid wiping apparatus |
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