JPS6393850A - Removing method for inclusion in hot dip galvanizing bath - Google Patents
Removing method for inclusion in hot dip galvanizing bathInfo
- Publication number
- JPS6393850A JPS6393850A JP61237875A JP23787586A JPS6393850A JP S6393850 A JPS6393850 A JP S6393850A JP 61237875 A JP61237875 A JP 61237875A JP 23787586 A JP23787586 A JP 23787586A JP S6393850 A JPS6393850 A JP S6393850A
- Authority
- JP
- Japan
- Prior art keywords
- bath
- inclusions
- frame
- plating bath
- partition frame
- 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
- 238000005246 galvanizing Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 7
- 238000005192 partition Methods 0.000 claims abstract description 20
- 238000007747 plating Methods 0.000 claims description 30
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect 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
- C23C2/003—Apparatus
- C23C2/0034—Details related to elements immersed in bath
-
- 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
-
- 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
-
- 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
- C23C2/325—Processes or devices for cleaning the bath
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は、溶融亜鉛メッキ浴中の介在物除去方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for removing inclusions in a hot-dip galvanizing bath.
（従来の技術）
溶融亜鉛メッキ浴中には、被メッキ材である銅帯、ある
いは鋼材が浴中に持込む鉄粉等と、メッキケ属が反応し
て介在物（一般にはドロスと称する〕が発生し、これが
被メッキ材であるメッキ鋼帯等に付着し、品質を劣化さ
せる原因となっている。(Prior art) In a hot-dip galvanizing bath, inclusions (generally called dross) are formed when the galvanizing metal reacts with iron powder, etc. brought into the bath by the copper strip or steel material to be plated. This occurs and adheres to the plated steel strip, etc., which is the material to be plated, causing quality deterioration.
しかしてこのような介在物を除去するため、従来はメッ
キ浴表面に位置したドロスを機械的に除去するか、（実
開昭６０−１２２３５８号）又は浴底部に堆積している
ドロスを汲み上げて除去しているが、現実にはこのよう
なドロスの他に浴中に浮遊するドロスがあシ、これも被
メッキ材の品質を劣化させる原因となっている。However, in order to remove such inclusions, conventional methods have been to either mechanically remove the dross located on the surface of the plating bath (Utility Model Application No. 60-122358), or to pump up the dross accumulated at the bottom of the bath. However, in reality, in addition to such dross, there is also dross floating in the bath, which also causes deterioration in the quality of the plated material.
又浴表面に位置するドロス及び浴底部に堆積するドロス
の大部分は、浴中に浮遊するドロスに起因するものであ
り、このようなドロスを確実に除去することが強く要求
嘔れているところである。In addition, most of the dross located on the bath surface and the dross deposited at the bottom of the bath is caused by dross floating in the bath, and there is a strong demand for the reliable removal of such dross. be.
（発明が解決しようとする問題点）
本発明は、このような従来の問題点を解決し、メッキ浴
中にあるドロスを確実に除去するための技術を提供する
ものである。(Problems to be Solved by the Invention) The present invention solves these conventional problems and provides a technique for reliably removing dross in a plating bath.
（問題点を解決するための手段〉
本発明の特徴とするところは１亜鉛メツキ浴中へ仕切枠
の下部を位置せしめ、メッキ浴中に位置する仕切枠にフ
ィルターを設け、該仕切枠内のメッキ浴を撹拌し、介在
物を凝集浮上せしめるものである。(Means for Solving the Problems) The present invention is characterized by: (1) positioning the lower part of the partition frame in the galvanizing bath; providing a filter in the partition frame located in the plating bath; The plating bath is stirred to cause inclusions to coagulate and float.
即ち、本発明においては、撹拌によシメッキ浴中のドロ
スを凝集し・浮上を促進するものでめる。That is, in the present invention, stirring is used to agglomerate the dross in the plating bath and promote floating.
つｔｂ、撹拌することにより微小ドロス粒子の凝集が促
進され、粒子径が増大する。この粒子径の増大によシ、
ドロス粒子に働く浮力と粘性抵抗からドロスの浮上速度
が増加し、メッキ浴の表面への移動（分離）が促進され
る。Furthermore, stirring promotes agglomeration of fine dross particles and increases the particle size. Due to this increase in particle size,
The buoyant force and viscous resistance acting on the dross particles increase the floating speed of the dross, promoting its movement (separation) to the surface of the plating bath.
次に撹拌する手段としては、例えば、インペラー回転に
よる撹拌、インペラー回転の撹拌とガスバブリングの併
用等があシ、このようにして撹拌し・上記のごとく介在
物を凝集、浮上し清浄化したメッキ浴をフィルターを介
して仕切枠外のメッキ浴中へ導出し、同時に仕切枠下端
から介在物を含むメッキ浴を導入し・連続的にメッキ浴
中の介在物を除去し、もってメッキ浴槽内の介在物を減
少させて、介在物（ドロス）による被メツキ材品質の劣
化を防止するものである。この際仕切枠は回収ドロスと
メッキ浴の分離を有利にするとともに、回収ドロスの飛
散によって被メツキ材表面へドロスが付着するのを防止
する役割をはたす。Next, as a means of stirring, for example, stirring by impeller rotation, a combination of impeller rotation stirring and gas bubbling, etc. are possible. The bath is guided into the plating bath outside the partition frame through the filter, and at the same time, the plating bath containing inclusions is introduced from the bottom end of the partition frame, and the inclusions in the plating bath are continuously removed, thereby eliminating the inclusions inside the plating bath. This prevents the quality of the plated material from deteriorating due to inclusions (dross). At this time, the partition frame facilitates the separation of the recovered dross from the plating bath, and also serves to prevent the dross from adhering to the surface of the plated material due to scattering of the recovered dross.
一般に溶融亜鉛メツキラインにおいては操業中のメッキ
浴中の鉄濃度が例えは、０．０３％以上になるとドロス
の発生が顕著になるものであるが、本発明を用いること
により鉄濃度を確実に０．０２５％以下に抑えることが
でき、ドロスの発生とそれによるメッキ製品の品質劣化
１−一昧防止することができる。Generally, in a hot-dip galvanizing line, when the iron concentration in the plating bath during operation becomes, for example, 0.03% or more, the generation of dross becomes noticeable, but by using the present invention, the iron concentration can be reliably reduced to zero. This can be suppressed to .025% or less, and the generation of dross and the resulting quality deterioration of plated products can be completely prevented.
次に本発明方法の実施例を説明する。Next, examples of the method of the present invention will be described.
（実施例）
第１図に示すごとく、溶融亜鉛メッキ浴槽１のメッキ浴
２中にジンクロール３を介して被メツキ銅帯４を導きメ
ッキするに際し・メッキ浴２中ヘセラミ、り裏で直径５
００ｍ１の円形状の仕切枠５をその下端がメッキ浴２の
表面から１ｏ ｏ ｏＩＩＩＩｌに位置するごとく、下
部を位置せしめメッキ浴２中に位置する仕切枠５に気孔
率ａｏｖ％、気孔径０．８〜１．２ｆｌｌｌｌ＋、高さ
１００ｍｍＸ巾４０Ｃ１１ｍのセラミックフィルター６
配置した。そしてこの仕切枠５内に羽根数４枚、直径３
００ＴＩｍｓ羽根角度θ（第２図）１０°のインペラー
７をメッキ浴２の表面から６００１１１１１深さへ位１
１させ、回転数１２０ ｒ、 Ｐ、 ｍ テ回転させた
。(Example) As shown in Fig. 1, when plating the copper strip 4 to be plated by introducing it through the zinc roll 3 into the plating bath 2 of the hot-dip galvanizing bath 1,
The lower part of a circular partition frame 5 of 00 m1 is positioned so that its lower end is located 1 o o o III l from the surface of the plating bath 2, and the partition frame 5 located in the plating bath 2 has a porosity of aov% and a pore diameter of 0. 8~1.2flll+, height 100mm x width 40C11m ceramic filter 6
Placed. The number of blades in this partition frame 5 is 4, and the diameter is 3.
00TIms Impeller 7 with blade angle θ (Figure 2) 10° is placed at a depth of 60011111 from the surface of plating bath 2.
1 and rotated at a rotation speed of 120 r, p, m.
通常の亜鉛メッキ浴（浴温４７０℃）において仕切枠５
内のメッキ浴を撹拌し、浴中の介在物を凝集、浮上させ
清浄化したメッキ浴をフィルター６から仕切枠５外のメ
ッキ浴２中へ戻し、同時に仕切枠５の下端から介在物の
存在するメッキ浴２を仕切枠５内へ取シ入れ連続的に浴
中の介在物を除去した。Partition frame 5 in a normal galvanizing bath (bath temperature 470℃)
The plating bath inside is stirred, the inclusions in the bath are aggregated and floated, and the cleaned plating bath is returned from the filter 6 to the plating bath 2 outside the partition frame 5, and at the same time, the presence of inclusions is removed from the lower end of the partition frame 5. The plating bath 2 was introduced into the partition frame 5, and inclusions in the bath were continuously removed.
つまり、インペラー７の回転に基づくポンプ効果により
メッキ浴は上昇することから、凝集し浮上し易くなった
介在物は−Ｉ−速やかにメッキ浴面へ移動浮上するとと
もに、浄化したメッキ浴は、フィルター６から仕切枠５
の外の浴中へ排出する。In other words, since the plating bath rises due to the pump effect based on the rotation of the impeller 7, the inclusions that have aggregated and become easy to float quickly move to the surface of the plating bath and float, and the purified plating bath is filtered through the filter. 6 to partition frame 5
discharge into the outside bath.
しかして、このようにして介在物を除去しつつ被メツキ
鋼帯４（１３２０ｍｍ、板厚０．６ ｒｒｍ ） ｆ
１００ｍ／分で連続操業したところメッキ浴中２の鉄濃
度を０．０２５％に確実に維持することができ、メッキ
浴中の介在物を有利除去することができた。Thus, while removing the inclusions in this way, the steel strip 4 to be plated (1320 mm, plate thickness 0.6 rrm) f
When operated continuously at 100 m/min, the iron concentration of 2 in the plating bath could be reliably maintained at 0.025%, and inclusions in the plating bath could be advantageously removed.
（発明の効果）
本発明方法は亜鉛メッキ浴中の介在物（ドロス〕を確実
に減少させることができ、介在物によるメッキ製品の劣
化を防止することができる等の優れた効果が得られる。(Effects of the Invention) The method of the present invention provides excellent effects such as being able to reliably reduce inclusions (dross) in a galvanizing bath and preventing deterioration of plated products due to inclusions.
第１図は本発明方法の一実施例を示す説明図、第２図は
インペラーの拡大説明図である。
１・・・・・・亜鉛メッキ浴権
２・・・・・・メッキ浴
３・・・・・・ジンクロール
４・・・・・・被メツキ鋼帯
５・・・・・・仕切枠
６・・ ・・・・セラミックフィルター７・・・・・・
インペラーFIG. 1 is an explanatory view showing one embodiment of the method of the present invention, and FIG. 2 is an enlarged explanatory view of an impeller. 1... Galvanized bath right 2... Plating bath 3... Zinc roll 4... Steel strip to be plated 5... Partition frame 6・・・・・・Ceramic filter 7・・・・・・
impeller
Claims (1)
中に位置する仕切枠にフィルターを設け、該仕切枠内の
メッキ浴を撹拌し、介在物を凝集浮上せしめることを特
徴とする溶融亜鉛メッキ浴中の介在物除去方法Molten zinc characterized in that the lower part of the partition frame is placed in a galvanizing bath, a filter is provided on the partition frame located in the plating bath, and the plating bath in the partition frame is stirred to cause inclusions to coagulate and float. Method for removing inclusions in plating bath
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61237875A JPS6393850A (en) | 1986-10-08 | 1986-10-08 | Removing method for inclusion in hot dip galvanizing bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61237875A JPS6393850A (en) | 1986-10-08 | 1986-10-08 | Removing method for inclusion in hot dip galvanizing bath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6393850A true JPS6393850A (en) | 1988-04-25 |
Family
ID=17021709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61237875A Pending JPS6393850A (en) | 1986-10-08 | 1986-10-08 | Removing method for inclusion in hot dip galvanizing bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6393850A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331460A (en) * | 1989-06-29 | 1991-02-12 | Nkk Corp | Device for recovering dross in pot of hot dipping device |
| EP0608192A1 (en) * | 1993-01-22 | 1994-07-27 | Sollac S.A. | Method and apparatus for cleaning a molten bath used for coating metallic products with metallic alloys |
| KR100419178B1 (en) * | 1999-12-13 | 2004-02-14 | 주식회사 포스코 | Additional Ceramic Roll for Reducing Drosses in CGL Line |
| CN111334736A (en) * | 2020-04-16 | 2020-06-26 | 高邮成鑫金属制造有限公司 | Hot galvanizing system with high operation efficiency |
-
1986
- 1986-10-08 JP JP61237875A patent/JPS6393850A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0331460A (en) * | 1989-06-29 | 1991-02-12 | Nkk Corp | Device for recovering dross in pot of hot dipping device |
| EP0608192A1 (en) * | 1993-01-22 | 1994-07-27 | Sollac S.A. | Method and apparatus for cleaning a molten bath used for coating metallic products with metallic alloys |
| FR2700779A1 (en) * | 1993-01-22 | 1994-07-29 | Lorraine Laminage | Process for the purification of a coating bath of metallurgical products with a metal alloy, and installation for the implementation of this process. |
| US5558715A (en) * | 1993-01-22 | 1996-09-24 | Sollac, Societe Anonyme | Method for the purification of a bath for coating metallurgical products with a metallic alloy, and installation for the implementation of this method |
| KR100419178B1 (en) * | 1999-12-13 | 2004-02-14 | 주식회사 포스코 | Additional Ceramic Roll for Reducing Drosses in CGL Line |
| CN111334736A (en) * | 2020-04-16 | 2020-06-26 | 高邮成鑫金属制造有限公司 | Hot galvanizing system with high operation efficiency |
| CN111334736B (en) * | 2020-04-16 | 2022-03-04 | 高邮成鑫金属制造有限公司 | Hot galvanizing system with high operation efficiency |
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