JPH0765150B2 - Nozzle for molten metal coating equipment - Google Patents
Nozzle for molten metal coating equipmentInfo
- Publication number
- JPH0765150B2 JPH0765150B2 JP62104778A JP10477887A JPH0765150B2 JP H0765150 B2 JPH0765150 B2 JP H0765150B2 JP 62104778 A JP62104778 A JP 62104778A JP 10477887 A JP10477887 A JP 10477887A JP H0765150 B2 JPH0765150 B2 JP H0765150B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- molten metal
- rotor
- plating
- steel plate
- 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 - Lifetime
Links
Landscapes
- Coating Apparatus (AREA)
- Coating With Molten Metal (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、鋼板に溶融状態のメツキ金属を被覆する装置
に係り、特に鋼板に近接して設けられる溶融金属被覆用
ノズルの改良に関する。Description: TECHNICAL FIELD The present invention relates to an apparatus for coating a steel sheet with a molten metal plating, and particularly to an improvement of a molten metal coating nozzle provided in the vicinity of the steel sheet.
（従来の技術） 鋼板にAl,Su,Zn,Pb等およびこれらを主成分とす金属系
等の金属ｗメツキする方法としては電気メツキ法，浸漬
メツキ法および蒸着メツキ法等がある。また近年では、
アモルフアス製造技術の進歩とも関連して、生産性，メ
ツキ性能およびコスト面でのより一層の改善を意図して
溶融金属を直接鋼板に被着せしめる金属被覆方法が種々
検討されている。例えば特開昭59−67357号公報には溶
融金属を走行する鋼板上にノズルを介して被着する方法
が提案されている。(Prior Art) As a method for plating a metal sheet such as Al, Su, Zn, Pb or the like and a metal system containing these as a main component, there are an electric plating method, an immersion plating method, a vapor deposition plating method and the like. In recent years,
In connection with the progress of amorphous manufacturing technology, various metal coating methods for directly depositing molten metal on a steel sheet have been studied in order to further improve productivity, plating performance and cost. For example, Japanese Patent Application Laid-Open No. 59-67357 proposes a method of depositing molten metal on a steel plate running through a nozzle.
（発明が解決しようとする問題点） 一般的に、溶融金属をノズルを介して鋼板に直接被覆す
る技術の実用化の最大の難点はメツキ金属の甚だしい付
着むらにあり、この原因の一つは、溶融金属を鋼板上に
吹き付けるノズルにある。たとえば前記公報の場合、均
一な厚さの被覆を施す目的でノズルのスリツト巾を小さ
くするか、あるいはノズルを多孔ノズルとすると目づま
り等の問題を生じ、これを避けてスリツト巾を大きくす
ると垂れ流しに近い状態となる。したがつてメツキ厚の
制御が図り難く、また溶融金属の表面張力が大きいため
鋼板を高速で走行させた場合に著しい付着むらが発生す
る等多くの問題がある。(Problems to be Solved by the Invention) In general, the biggest difficulty in the practical application of the technique of directly coating molten steel on a steel sheet through a nozzle is the extremely uneven adhesion of the metal powder, one of the causes of which is , A nozzle for spraying molten metal onto a steel plate. For example, in the case of the above-mentioned publication, if the slit width of the nozzle is made small for the purpose of applying a uniform thickness, or if the nozzle is a multi-hole nozzle, problems such as clogging occur. It will be in a state close to. Therefore, it is difficult to control the thickness of the plating, and the surface tension of the molten metal is large, so that there are many problems such as significant adhesion unevenness when the steel sheet is run at high speed.
（問題点を解決するための手段） 本発明者らは前述の溶融金属を鋼板に着接被着する方法
における最大の問題点であるメツキ厚の均一性およびそ
の制御の手段についてノズル形状等の観点から種々検討
を行つてきた。その結果、本発明をなすに至つたもの
で、その特徴は、走行する鋼板に近接して設けたノズル
を介して溶融金属を該鋼板に被着する溶融金属被覆装置
ノズルにおいて、該ノズルの内部に回転子挿入孔を設
け、その回転子挿入孔には、溶融金属を送給し、被覆す
るために、回転自在かつ上下移動自在の回転子が挿入さ
れ、且つ該回転子の曲面部の一部をノズルの先端から突
出せしめたことを特徴とする溶融金属被覆装置用ノズル
にある。(Means for Solving the Problems) The inventors of the present invention are concerned with the uniformity of the plating thickness and the means of controlling the same, which is the greatest problem in the method of depositing and depositing the molten metal on the steel plate, such as the nozzle shape. Various studies have been conducted from the viewpoint. As a result, the present invention has been made, which is characterized in that in a molten metal coating device nozzle for depositing molten metal on a steel plate through a nozzle provided close to the traveling steel plate, the inside of the nozzle is A rotor insertion hole is provided in the rotor, and a rotatable and vertically movable rotor is inserted into the rotor insertion hole for feeding and coating the molten metal, and one of the curved surface portions of the rotor is inserted. A nozzle for a molten metal coating device, characterized in that a portion is projected from the tip of the nozzle.
（作用） 以下、本発明を図面に基づいて詳細に説明する。(Operation) Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は本発明の実施態様の一例の示すノズルの断面図
であつて、図面の垂直方向がノズルの長手方向つまりコ
イルの巾方向となる。FIG. 1 is a sectional view of a nozzle showing an example of an embodiment of the present invention, and the vertical direction of the drawing is the longitudinal direction of the nozzle, that is, the width direction of the coil.
第１図において１はノズル、２はノズル外殻、３は円筒
状の回転子、４は湯溜り部、５は溶融金属、６は溶融金
属等の原料の供給側への取付け部、７は回転子挿入孔、
８はスリツト、９は搬送ロール、10は鋼板、11は溶融金
属被膜、Ｗは鋼板10の走行方向を示す。上記回転子３は
その曲面部の一部をノズル先端のスリツト８から突出せ
しめて回転自在かつ上下移動自在に配置されている。こ
の単一の回転子により溶融金属の送給と被覆厚みの制御
を同時に行うことができる。In FIG. 1, 1 is a nozzle, 2 is a nozzle outer shell, 3 is a cylindrical rotor, 4 is a molten metal pool, 5 is a molten metal, 6 is a mounting portion for supplying a raw material such as molten metal to a supply side, and 7 is Rotor insertion hole,
8 is a slit, 9 is a transport roll, 10 is a steel plate, 11 is a molten metal coating, and W is the traveling direction of the steel plate 10. The rotor 3 is arranged rotatably and vertically movable with a part of its curved surface protruding from a slit 8 at the tip of the nozzle. With this single rotor, it is possible to feed the molten metal and control the coating thickness at the same time.
同図において、湯溜り部４の溶融金属５は鋼板10に接し
て回転している回転子３を介して鋼板10上に被着され、
被膜11が形成される。In the figure, the molten metal 5 of the pool 4 is deposited on the steel plate 10 through the rotor 3 which is rotating in contact with the steel plate 10,
A coating 11 is formed.
なお、上記湯溜り部４は、溶融金属５が回転子３に連続
的に且つ、雰囲気ガスを巻き込まない状態で供給される
場合には、必要としない。また、溶融金属の温度の安定
化を図り、均質なメツキ被膜を形成するためにノズルの
外殻２又はノズル外部に加熱装置を設けてもよい。The molten metal pool 4 is not necessary when the molten metal 5 is continuously supplied to the rotor 3 without entraining the atmospheric gas. Further, in order to stabilize the temperature of the molten metal and form a uniform plating film, a heating device may be provided on the outer shell 2 of the nozzle or outside the nozzle.
本発明においては、メツキ厚は大別して次の２つの方法
によつて制御する。In the present invention, the plating thickness is roughly classified and controlled by the following two methods.
一つは回転子３の半径ｒとこれに接する回転子挿入孔７
の内半径Ｒとの差ｌ（＝Ｒ−ｒ）を回転子３によつて調
整する方法である。即ち、薄メツキの場合にはｒを大き
くしてこの間隙ｌを小さく、厚メツキの場合には逆にｒ
を小さくして間隙ｌを大きくする。このさい、回転子３
等への表面粗さ、あるいは条溝等の附与は間隙ｌを調整
することとほぼ同様な働きをすると共に、溶融金属の吐
出時の湯流れを円滑にするうえでも効果的である。One is the radius r of the rotor 3 and the rotor insertion hole 7 in contact with it.
This is a method of adjusting the difference 1 (= R−r) from the inner radius R of the rotor 3 by the rotor 3. That is, in the case of thin plating, r is increased and this gap l is decreased, and in the case of thick plating, r is reversed.
Is reduced to increase the gap l. At this time, rotor 3
The surface roughness or the provision of a groove or the like has a function similar to that of adjusting the gap l, and is also effective in smoothing the flow of molten metal at the time of discharging the molten metal.
メツキ厚を制御するもう一つの方法は、回転子３の位置
を下方、つまりノズル先端側に微動調整することによつ
てスリツト８の巾、つまり開口量を調整する方法で、薄
メツキの場合には回転子３の中心点を回転子挿入孔７の
中心点よりノズルの先端側としてスリツト８の巾を狭
め、厚メツキの場合にはこの中心点を近づけてスリツト
８の巾を広げればよい。このスリツト８の巾の調整操作
は、ロール９を介せば容易かつ正確に行なうことができ
る。Another method for controlling the thickness of the mesh is a method of adjusting the width of the slit 8, that is, the opening amount by finely adjusting the position of the rotor 3 downward, that is, toward the nozzle tip side. With the center point of the rotor 3 being closer to the tip of the nozzle than the center point of the rotor insertion hole 7, the width of the slit 8 may be narrowed, and in the case of a thick mesh, the width of the slit 8 may be widened by bringing the center point closer. The operation of adjusting the width of the slit 8 can be easily and accurately performed through the roll 9.
これら２つのメツキ厚調整法において、前者のｌを調整
する方法は、主として粗調整，後者のスリツト８の巾を
調整する方法は微調整に用いるが、これによつて目標と
するメツキ厚の設定が容易となり正確で均一なメツキ厚
の管理が施し易い。In these two methods of adjusting the thickness of the plating, the former method of adjusting l is mainly used for the rough adjustment, and the latter method of adjusting the width of the slit 8 is used for the fine adjustment. It is easy to control the thickness of the plating accurately and uniformly.
所要のメツキ厚を得るための間隙ｌの適正値は、溶融メ
ツキ金属の種類および温度（すなわち比重，粘度，表面
張力等）、ノズルとくに回転子３の材質および表面粗
さ，湯溜り部４から回転子挿入孔７にかけての内部形
状，さらには鋼板の表面性状等を考慮して選定すべきで
一概に言えないが、多くの場合ｌは0.05〜0.5mm程度が
好ましい。The appropriate value of the gap l for obtaining the required plating thickness depends on the type and temperature of the molten plating metal (that is, specific gravity, viscosity, surface tension, etc.), the material and surface roughness of the nozzle 3, especially the rotor 3, and the molten metal pool 4. It should be selected in consideration of the internal shape of the rotor insertion hole 7 and the surface properties of the steel sheet, but it cannot be said unconditionally, but in many cases, l is preferably about 0.05 to 0.5 mm.
同様に円筒状の回転子３の半径ｒもその材質あるいは溶
融メツキ金属の種類等によつて異なるが、半径ｒが大き
過ぎると走行する鋼板との接触による回転がいかに流体
潤滑下と云えども不安定となつてメツキ厚の均一性が損
なわれ、小さ過ぎると間隙ｌを大きくすることができず
厚メツキを施こし難くなる等の支障をきたす。したがつ
て、多くの場合半径ｒは２〜10mm程度が好ましい。Similarly, the radius r of the cylindrical rotor 3 also differs depending on its material, the type of molten metal, and the like. However, if the radius r is too large, the rotation due to contact with the running steel plate is under fluid lubrication. It is stable and the uniformity of the thickness of the plating is impaired. If it is too small, the gap 1 cannot be increased and it becomes difficult to apply the thickness plating. Therefore, in most cases, the radius r is preferably about 2 to 10 mm.
ノズルと材料はアモルフアス金属の製造等に用いられて
いるノズルと同様に耐熱性および耐熱衝撃性が良好で、
溶融メツキ金属との反応性あるいは漏れ性が小さいもの
を選定する必要があり、これにはSiC,Al2O3,Si3N4,ZrO2
系等あるいはこれらを複合したフアインセラミツクスを
使用することが望ましい。The nozzle and material have good heat resistance and thermal shock resistance, similar to the nozzle used for the manufacture of amorphous metal, etc.
It is necessary to select a material that has low reactivity or leakage with molten metal, such as SiC, Al 2 O 3 , Si 3 N 4 and ZrO 2
It is desirable to use a fine ceramics or the like or a composite thereof.
（実施例） 以下、実施例において本発明を詳述する。(Examples) Hereinafter, the present invention will be described in detail with reference to Examples.
第１図に示す形状を有し、円筒状の回転子３の半径ｒが
6mm,空隙ｌが0.3mm,スリツト長さに相当する長手方向の
長さが300mmである炭化ケイ素製の本発明によるノズル
を用い、湯溜り部４においてアルゴンガス中で750℃に
均熱保定した溶融アルミニウムを、60m/minの速度で走
行する板厚0.3mm,幅320mmの表面清浄な冷延鋼板10上
に、該冷延鋼板に接して回転させた円筒状の回転子３を
介してアルゴンガス雰囲気中で被着させ、メツキ厚が80
μの均質なメツキ層を有するアルミニウムメツキ鋼板を
得た。The radius r of the cylindrical rotor 3 having the shape shown in FIG. 1 is
A nozzle according to the present invention made of silicon carbide having a length of 6 mm, a void 1 of 0.3 mm, and a length in the longitudinal direction corresponding to the slit length of 300 mm was used and soaked in argon gas at 750 ° C. in the hot water pool 4 Molten aluminum is run on a cold-rolled steel plate 10 having a plate thickness of 0.3 mm and a width of 320 mm, which runs at a speed of 60 m / min and has a clean surface, and argon is passed through a cylindrical rotor 3 rotated in contact with the cold-rolled steel plate. Deposited in a gas atmosphere with a thickness of 80
An aluminum plated steel sheet having a uniform plated layer of μ was obtained.
一方、比較として同様に750℃に加熱した溶融アルミニ
ウムをアモルフアス製造法で行なわれていると同様の方
法によつて、スリツト巾が0.1,0.2,0.3mmの３種類で長
さが300mmのスリツトノズルを用い、アルゴンガスによ
つて背圧0.5kg/cm2を加えて、上記と同様に走行させた
鋼板10上に吹き付けた。これらの比較例において0.1mm
のスリツトノズルにおいては甚しい目づまりによる不め
つき部の発生,0.2mmの場合には走行方向への極端な波状
のメツキ模様の発生および0.3mmの場合には波模様に加
えて湯流れによる走行方向への線状模様が発生し、いず
れもメツキ厚が極度に変動し最適条件を見出し得なかつ
た。On the other hand, as a comparison, a slit nozzle with a slit width of 0.1 mm, 0.2 mm, and 0.3 mm and a length of 300 mm was used in the same manner as in the case where molten aluminum heated to 750 ° C was used in the amorphous method. Using argon gas, a back pressure of 0.5 kg / cm 2 was applied and sprayed onto the steel plate 10 which was run in the same manner as above. 0.1 mm in these comparative examples
In the slit nozzle of No. 2, there was an unpleasant part due to severe clogging, when 0.2 mm, an extremely wavy pattern was generated in the running direction, and when it was 0.3 mm, running was caused by the wavy pattern and running water. A linear pattern was generated in the direction, and in either case, the plating thickness fluctuated extremely, and the optimum conditions could not be found.
（本発明の効果） 本発明の溶融金属被覆装置用ノズルによれば、溶融金属
の送給と被覆厚みの制御が同時に行え、従来の方法では
製造が困難であつた溶融金属の鋼板への直接被着が容易
にかつ均一に施こせ、操業管理が容易になる他、設備の
小型化，製造エネルギーの低減，合金層の発達抑制等に
よるメツキ密着性の改善あるいは片面メツキが容易にな
る等、操業面，設備面および品質面等において産業界に
与える利点は甚大である。(Effect of the present invention) According to the nozzle for a molten metal coating apparatus of the present invention, the molten metal can be fed and the coating thickness can be controlled at the same time, and the molten metal can be directly applied to the steel plate, which is difficult to manufacture by the conventional method. It can be applied easily and evenly, the operation can be easily controlled, the equipment can be downsized, the manufacturing energy can be reduced, and the adhesion of the matte layer can be improved by suppressing the development of the alloy layer. The advantages given to the industry in terms of operation, equipment and quality are enormous.
図面は、本発明による装置の一例の示す説明用断面図で
ある。 １はノズル、２はノズル外殻、３は回転子、４は湯溜り
部、５は溶融金属、６は取付け部、７は回転子挿入孔、
８はスリツト、９は搬送ロール、10は鋼板、11は溶融金
属被膜。The drawings are explanatory cross-sectional views showing an example of an apparatus according to the present invention. 1 is a nozzle, 2 is a nozzle outer shell, 3 is a rotor, 4 is a molten metal pool, 5 is molten metal, 6 is a mounting part, 7 is a rotor insertion hole,
8 is a slit, 9 is a transport roll, 10 is a steel plate, and 11 is a molten metal coating.
Claims (1)
して溶融金属を該鋼板に被着する溶融金属被覆装置用ノ
ズルにおいて、該ノズルの内部に回転子挿入孔を設け、
該回転子挿入孔には、溶融金属を送給し被覆するため
に、回転自在かつ上下移動自在の回転子が挿入され、且
つ、該回転子の曲面部の一部をノズルの先端から突出せ
しめたことを特徴とする溶融金属被覆装置用ノズル。1. A nozzle for a molten metal coating device for depositing molten metal on a steel plate through a nozzle provided in the vicinity of a traveling steel plate, wherein a rotor insertion hole is provided inside the nozzle.
A rotatably and vertically movable rotor is inserted into the rotor insertion hole for feeding and coating the molten metal, and a part of the curved surface of the rotor is projected from the tip of the nozzle. A nozzle for a molten metal coating device, characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62104778A JPH0765150B2 (en) | 1987-04-30 | 1987-04-30 | Nozzle for molten metal coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62104778A JPH0765150B2 (en) | 1987-04-30 | 1987-04-30 | Nozzle for molten metal coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63274748A JPS63274748A (en) | 1988-11-11 |
| JPH0765150B2 true JPH0765150B2 (en) | 1995-07-12 |
Family
ID=14389936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62104778A Expired - Lifetime JPH0765150B2 (en) | 1987-04-30 | 1987-04-30 | Nozzle for molten metal coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0765150B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5874658B2 (en) * | 2013-02-28 | 2016-03-02 | Ｊｆｅスチール株式会社 | Method for producing molten metal plated steel sheet |
| EP3750637A1 (en) | 2019-03-29 | 2020-12-16 | Airbus Operations GmbH | Device for a lacquer transfer |
| EP3722009A1 (en) | 2019-03-29 | 2020-10-14 | Airbus Operations GmbH | Device and system |
| EP3722007A1 (en) | 2019-03-29 | 2020-10-14 | Airbus Operations GmbH | Device for lacquer transfer |
| EP3725539A1 (en) * | 2019-03-29 | 2020-10-21 | Airbus Operations GmbH | Device for lacquer transfer |
| EP3733300A1 (en) | 2019-04-11 | 2020-11-04 | Airbus Operations GmbH | Device for a lacquer transfer |
| EP3725422B1 (en) | 2019-04-12 | 2025-01-29 | Airbus Operations GmbH | Device for lacquer transfer |
| CN112863868B (en) * | 2021-01-13 | 2022-07-22 | 佛山易事达电容材料有限公司 | Manufacturing method of high-temperature and high-humidity resistant safety film |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54146227A (en) * | 1978-05-09 | 1979-11-15 | Nippon Steel Corp | Hot dipping methof for steel strip |
| US4307240A (en) * | 1980-05-30 | 1981-12-22 | General Electric Company | Alkoxysilanes and method for making |
| JPS61133370A (en) * | 1984-12-04 | 1986-06-20 | Kawasaki Steel Corp | Method for plating molten metal |
-
1987
- 1987-04-30 JP JP62104778A patent/JPH0765150B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63274748A (en) | 1988-11-11 |
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