JPS5916959A - Preparation of molten zinc plated steel plate with different thicknesses - Google Patents
Preparation of molten zinc plated steel plate with different thicknessesInfo
- Publication number
- JPS5916959A JPS5916959A JP57125762A JP12576282A JPS5916959A JP S5916959 A JPS5916959 A JP S5916959A JP 57125762 A JP57125762 A JP 57125762A JP 12576282 A JP12576282 A JP 12576282A JP S5916959 A JPS5916959 A JP S5916959A
- Authority
- JP
- Japan
- Prior art keywords
- plating
- steel plate
- gas
- injected
- nozzle
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 239000011701 zinc Substances 0.000 title abstract description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title abstract description 5
- 229910052725 zinc Inorganic materials 0.000 title abstract description 5
- 238000007747 plating Methods 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 5
- 239000008397 galvanized steel Substances 0.000 claims description 5
- 238000005246 galvanizing Methods 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 claims description 4
- 239000003350 kerosene Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0034—Details related to elements immersed in bath
- C23C2/00342—Moving elements, e.g. pumps or mixers
- C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は連続的溶融亜鉛めっき法により表裏面のめつ
ｔ！厚が異なるいわゆる差厚溶融亜鉛めっき鋼板（片面
又は両面を熱処理合金化するものを含む）を製造する方
法に関する。DETAILED DESCRIPTION OF THE INVENTION This invention is a method of coating both front and back surfaces using a continuous hot-dip galvanizing method. The present invention relates to a method for manufacturing so-called differential thickness galvanized steel sheets (including those in which one or both sides are heat-treated and alloyed).
連続式溶融亜鉛めっき設備（以下ＣＧＬとする）等にお
いて連続的に溶融亜鉛めっきを施す場合、そのめっき量
コントロールは気体絞り法によって行われるのが一般的
である。When hot-dip galvanizing is performed continuously in continuous hot-dip galvanizing equipment (hereinafter referred to as CGL), the amount of plating is generally controlled by a gas squeezing method.
この場合、表具一対のノズルから噴出”されるガスの圧
ブハ又はノズルと鋼板の間隔を調整することによってめ
っき敵の増減を行っている。In this case, the amount of plating is increased or decreased by adjusting the pressure of the gas ejected from a pair of nozzles of the mounting tool or the distance between the nozzle and the steel plate.
差厚めつき鋼板を気体絞ｐ法に従って製造する場合、従
来法では表裏同形状のノズルから同一ガス体を噴出する
のであるから、表裏にめっき量差をつけるには、上述の
ガス圧、ノズル鋼板間隔の表裏異なる調整を行うことに
なる。すなわち、薄めつき側のガス圧力を高くするとか
、厚めつき側のノズルを遠ざけるとか等々である。When manufacturing differentially thick plated steel sheets according to the gas throttling method, in the conventional method the same gas is ejected from nozzles with the same shape on both sides, so in order to create a difference in the amount of plating on the front and back sides, it is necessary to adjust the gas pressure and nozzle steel sheet as described above. The spacing will be adjusted differently on the front and back sides. That is, increasing the gas pressure on the thinner side, moving the nozzle away from the thicker side, etc.
しかし、このような方法の場合、表裏めっき量差が小さ
い場合、例えば片面が６０ｆ／鷲１、他面が９０秋讐の
ようが場合１１’１ｍは問題ない１が、表裏差が１００
９７ｍ”以上にもなると多くの問題が生じ、例えば片面
が３０１！以下、他面がｌ ５０９７ｍ”以上の厚めつ
きともなると、めつ１！面の凹凸ムラや付着量分布のム
ラが生じ、単純にノズルやガス圧力のＶ＠整だけでは満
足な製品は得難くなることが経験的に知られている。However, in the case of this method, if the difference in the amount of plating on the front and back sides is small, for example, if one side is 60 f/1 and the other side is 90 f/1 m, there is no problem with 11'1 m, but if the difference between the front and back is 100 f/1 m, there is no problem.
If the thickness exceeds 97m, many problems will occur. For example, if one side is thicker than 301! and the other side is thicker than 5097m, then the thickness will be 1! It is known from experience that unevenness of the surface and unevenness of the coating amount distribution occur, making it difficult to obtain a satisfactory product simply by adjusting the nozzle and gas pressure.
本発明者らは上記した従来法の欠点を解決すべく、種々
の実験研兜を重ね九結果、噴出するガス体には夫々薄め
つき制御に有利なものと厚めつき制御に有利なものがあ
るとの知見に至った。例えば、窒素ガスと灯油の燃焼生
成ガスを比べた場合、前者ｉｉ後者より絞り力が強い念
め薄めつき製造には適しているが、逆に厚めつき製造に
麦ると、前者は極度の低圧力制御が要求されることから
制御の安定性に欠け、噴出ガスの脈流、巾方向圧力の不
均一等を生じて前記しためつき面の凹凸ムラや付着量分
布のムラの原因になる。一方、後者が、薄めつき製造と
なると高圧制御を要求され、そのためにスプラッシュ発
生や騒音発生を避けられなくなる。In order to solve the above-mentioned drawbacks of the conventional method, the present inventors conducted various experiments and found that some gas bodies are advantageous for thinning control and others are advantageous for thickening control. I came to this conclusion. For example, when comparing nitrogen gas and the gas produced by combustion of kerosene, the former has a stronger squeezing force than the latter and is suitable for thinning production, but conversely, when used for thick production, the former has extremely low Since pressure control is required, control stability is lacking, resulting in pulsating flow of ejected gas, non-uniform pressure in the width direction, etc., which causes unevenness of the tightening surface and unevenness in the coating amount distribution. On the other hand, if the latter is used for thinning production, high pressure control is required, which makes it impossible to avoid splashing and noise.
本発明は上記知見圧基づいてなされたもので、表裏のめ
つき面に夫々異なる組成のガス体を噴射することにより
良好なめっき面を有する差厚溶融亜鉛めっき鋼板を製造
しようとするものである。The present invention was made based on the above-mentioned knowledge and is intended to produce a differential thickness galvanized steel sheet having a good plated surface by injecting gaseous bodies of different compositions onto the front and back plated surfaces, respectively. .
第１図は本発明方法の説明図であシ、（１）は鋼板、（
２）は溶融亜鉛めっき槽、（３）はジンクロール、（４
）はコーティング四−ル、（５） （５）は鋼板（１）
の表裏からこれに対向するガス噴射用ノズルである。FIG. 1 is an explanatory diagram of the method of the present invention, (1) is a steel plate, (
2) is a hot-dip galvanizing tank, (3) is a zinc roll, and (4)
) is coating four-wheel, (5) (5) is steel plate (1)
This is a gas injection nozzle that faces this from the front and back.
本発明においてはこのノズル（５） （５５に夫り異な
るガス供給装置を接続し、該ノズル（５）（５１がら異
なる組成のガスを鋼板に噴射しめっき量を制御する。い
ま、鋼板（１）の一方の表面（１ａ）に薄めつきを、他
方の表面（１ｂ）に厚めつきを形成しようとする場合、
薄めつきの表面（１ａ）側のノズル（５）からは窒素ガ
？を噴射し、厚めつきの表面（１ｂ）側のノズル（５）
からは灯油の燃焼生成ガスｆＩ！Ａ射する。該窒素ガス
は常温のものでも加熱し次ものであっても良い。この場
合、従来と同様にガス圧、ノズル−鋼板間隔の調整を併
用しても良い。これにより良好な性情を有する差厚めつ
き鋼板を得ることができる。In the present invention, different gas supply devices are connected to the nozzle (5) (55), and gases of different compositions are injected onto the steel plate from the nozzle (5) (51) to control the plating amount. ) when trying to form a thin layer on one surface (1a) and a thick layer on the other surface (1b),
Nitrogen gas coming from the nozzle (5) on the diluted surface (1a) side? The nozzle (5) on the thick surface (1b) side
From is the combustion generated gas fI of kerosene! Shoot A. The nitrogen gas may be at room temperature or heated. In this case, adjustment of the gas pressure and the nozzle-to-steel plate distance may be used in conjunction with the conventional method. As a result, a differentially thickened steel plate having good properties can be obtained.
着た表裏のめつき童差が例えば３０〜２００ｆム２とか
３０〜２５０シ瞥のように非宮にめっき量差が大きい場
合には、厚めつき側のノズル（５１のスリット口径を薄
めつき仙１のノズル（５）のスリット口径よりも小さく
すると効果的である。If there is a large difference in the amount of plating between the front and back sides, for example 30 to 200 fm2 or 30 to 250 fm2, use the thicker side nozzle (51 slit diameter to the thinner side). It is effective to make the slit diameter smaller than that of the first nozzle (5).
、ＩＬ２図ｉ’ｊ３０〜１５０ ｆ／ｎ’ 材の鉄板幅
方向のめつき量分布を示すもので、（Ａ）は薄めつき側
に窒素ガスを厚めつき側に燃焼生成ガスを夫々噴射した
本発明方法による場合の結果である。（Ｂ）は両面に常
温の窒素ガスを、（Ｃ）は両面に灯油の燃焼生成ガスを
噴射した場合の結果である。この第２図から本発明法に
よれば表裏面共にめっき付Ｍ駐が均一化されることがわ
かる。, IL2 Diagram i'j30~150 f/n' This shows the plating amount distribution in the width direction of the iron plate for the material. (A) shows the case in which nitrogen gas is injected on the thinner side and combustion generated gas is injected on the thicker side. These are the results obtained using the invented method. (B) shows the results when nitrogen gas at room temperature was injected onto both sides, and (C) shows the results when kerosene combustion gas was injected onto both sides. From FIG. 2, it can be seen that according to the method of the present invention, the plating M parking is made uniform on both the front and back surfaces.
次に実施例を示す。Next, examples will be shown.
実施例
下掲表に窒素ガスと燃焼ガスを使用して本発明法により
差厚めつき鋼板を製造した例を従来法との比較で示す。EXAMPLE The table below shows an example in which a steel plate with differential thickness was manufactured by the method of the present invention using nitrogen gas and combustion gas, in comparison with a conventional method.
表中８１ 、８１は第３図に示すように夫々薄めつき側
のノズル（５）と厚めつき側のノズル（５）のスリット
口径である。In the table, 81 and 81 are the slit diameters of the nozzle (5) on the thinner side and the nozzle (5) on the thicker side, respectively, as shown in FIG.
下掲表かられかるように、６０９０Ｆ／／′□ｆｆ１（
片面が６０ ｆ／ｌｎ”、他面が９０９７ｍ” ）の差
厚めつきでは総ての方法で良好なものが得られた（Ｎｎ
ｌ 〜３）が、３０−１５０９’／ｍ”材では従来法で
は良好なものが得られなかった、例えば従来法で常温の
窒素ガスを使用する場合、薄めつき面は外観および付着
量の均一性とも良好であるが、厚めつき面は凹凸が全面
にあガスムースな仕上りに欠りる（Ｎｎ４，７）。また
灯油の燃灼生成ガスを使用した場合、厚めつき面には窒
素ガス使用のときのような欠陥は見られＩいが、薄めつ
き側ではスプラッシュが多発し、それが銅板に伺着した
り、ノズルの目づまり等を生じさせた（Ｎｏ５ 、８
）。As you can see from the table below, 6090F//'□ff1(
Good results were obtained by all methods with differential thickness (60 f/ln" on one side and 9097 m" on the other).
l ~ 3) However, good results could not be obtained using conventional methods for 30-1509'/m'' materials.For example, when using nitrogen gas at room temperature with conventional methods, the thinned surface has a uniform appearance and coating amount. However, the thick surface has unevenness and lacks a smooth finish (Nn4, 7).Also, when using kerosene combustion gas, the thick surface has unevenness and does not have a smooth finish (Nn4, 7). Although no defects were observed, there was a lot of splash on the thinner side, which landed on the copper plate and caused nozzle clogging (Nos. 5 and 8).
).
一方、本発明法によればいずれの差厚めつきも品質的に
良好なものが得られ（Ｎｎａ、６゜９）、また操業上も
スプラッシュの発生等の問題もなく極めて良好であった
。On the other hand, according to the method of the present invention, good quality was obtained for all differential plating thicknesses (Nna, 6°9), and the operation was extremely good without any problems such as occurrence of splash.
また３０ ２００ ｆ／Ｊ 、 ３０ ２５０ ｆ／ｍ
’の差厚めつきの場合にはスリット口径をかえることに
より表面仕上りの良いめっき面を得ることができた（Ｎ
ｎ １０ 、１１ ）、またＮｎ１２゜１３は窒素ガス
を加熱して使用したものであるが、常温の場合と同様に
良好な製品が得られた。Also 30 200 f/J, 30 250 f/m
In the case of plating with a difference in thickness, a plated surface with a good surface finish could be obtained by changing the slit diameter (N
n 10 , 11 ) and Nn12°13 were used by heating nitrogen gas, but good products were obtained as in the case of room temperature.
なお、上記した本発明法によりめっきｔを制御し念後、
熱処理を施して両面あるいは片面のみのＦｅ−Ｚｎ合金
化亜鉛めっき鋼板を製造（７た結果、同様に表面仕上り
の優れたものが得られた。In addition, after controlling the plating t by the method of the present invention described above,
Heat treatment was performed to produce Fe-Zn alloyed galvanized steel sheets on both sides or only on one side (7).As a result, similarly excellent surface finishes were obtained.
第１図は本発明方法の説明図、第２図は板幅方向のめつ
き量を示すグラフ、第３図はノズル径の説明図である。
図中、（１）は銅板、（２）はめつき槽、（３）はジン
クロール、（４）ＵコーティングロールＳ （Ｓ）（５
１はノズルを各示す。
特許出願人 日本鋼管株式会社
発 明 者 神 原 繁 雄回
阿 部 雅 何回
袴 着 弘 幸、′Ｉ
（ｔＪ１人弁理士 吉 原 省 三□
、（、−１］同 同 高 橋
清・同 弁篩士 吉 原
弘 子弟１図
第３図FIG. 1 is an explanatory diagram of the method of the present invention, FIG. 2 is a graph showing the amount of plating in the board width direction, and FIG. 3 is an explanatory diagram of the nozzle diameter. In the figure, (1) is a copper plate, (2) is a plating bath, (3) is a zinc roll, (4) is a U coating roll S (S) (5
1 indicates each nozzle. Patent applicant: Nippon Kokan Co., Ltd. Inventor: Shigeru Kamihara
Masa Abe How many times?
Hakama wearing Hiroyuki, 'I (tJ1 patent attorney Shozo Yoshihara□
, (,-1) Same Takahashi
Yoshihara, Kiyoshi Benshiro
Hiro Children Figure 1 Figure 3
Claims (1)
にめっき面を形成し次いで該めっき面にガス体を噴射し
て表裏のめつき付着鼠を制御する差厚溶融亜鉛めっき鋼
板の製造方法において、 前記表裏のめつき面に異なる組成のガ ス体を噴射することを特徴とする差厚溶融亜鉛めっき鋼
板の製造方法。 ２、薄めつき面とするめつき面ＶＣは窒素ガスを噴射し
、厚めつき面とするめつき面には燃焼ガスを噴射する特
許請求の範囲第１項に記載の差厚溶融亜鉛めっき鋼板の
製造方法。[Claims] 1. Differential thickness by continuously hot-dip galvanizing a steel plate to form plated surfaces on the front and back sides of the steel plate, and then injecting a gas to the plated surfaces to control plating adhesion on the front and back sides. A method for manufacturing a hot-dip galvanized steel sheet with differential thickness, characterized in that gas bodies of different compositions are injected onto the front and back plating surfaces. 2. The method for producing a differential thickness hot-dip galvanized steel sheet according to claim 1, wherein nitrogen gas is injected onto the plating surface VC, which is to be a thin plating surface, and combustion gas is injected to a plating surface, which is to be a thick plating surface. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57125762A JPS6059295B2 (en) | 1982-07-21 | 1982-07-21 | Manufacturing method of differential thickness hot-dip galvanized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57125762A JPS6059295B2 (en) | 1982-07-21 | 1982-07-21 | Manufacturing method of differential thickness hot-dip galvanized steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5916959A true JPS5916959A (en) | 1984-01-28 |
| JPS6059295B2 JPS6059295B2 (en) | 1985-12-24 |
Family
ID=14918188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57125762A Expired JPS6059295B2 (en) | 1982-07-21 | 1982-07-21 | Manufacturing method of differential thickness hot-dip galvanized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6059295B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187993A (en) * | 1985-02-14 | 1986-08-21 | Yukihiko Tamaki | Overall treatment of sewage by initial adsorption |
-
1982
- 1982-07-21 JP JP57125762A patent/JPS6059295B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187993A (en) * | 1985-02-14 | 1986-08-21 | Yukihiko Tamaki | Overall treatment of sewage by initial adsorption |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6059295B2 (en) | 1985-12-24 |
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