JPS62202070A - Method for removing inclusion from molten metal for hot dipping - Google Patents
Method for removing inclusion from molten metal for hot dippingInfo
- Publication number
- JPS62202070A JPS62202070A JP4163186A JP4163186A JPS62202070A JP S62202070 A JPS62202070 A JP S62202070A JP 4163186 A JP4163186 A JP 4163186A JP 4163186 A JP4163186 A JP 4163186A JP S62202070 A JPS62202070 A JP S62202070A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- filter
- dross
- bath
- gas
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 11
- 238000007598 dipping method Methods 0.000 title abstract 3
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 11
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000011261 inert gas Substances 0.000 abstract description 4
- 238000007747 plating Methods 0.000 description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000287127 Passeridae Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010041235 Snoring Diseases 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000021395 porridge Nutrition 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・溶融メッキ並属の介在物除去方法に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for removing inclusions associated with hot-dip plating.
（従来の技術）
亜鉛、アルミニウム等の浴融メッキ笠嬌浴中には、被メ
ッキ材である鋼帯等が浴中へ持込む鉄粉等とメッキ缶属
とが反応して介在物（一般にはドロスと称する）が発生
し、これがメッキ鋼帯に付着し、品質を劣化させる原因
となっている〇しかして、このような介在物を除去する
ため、メッキ浴表面に位置したドロスを機械的に除去す
ること（実開詔６０−１２２３５８号）又は、浴底部に
堆積したドロスを扱み上げることが開示されているが、
現実には、このように発生するドロスの他に浴中に浮遊
する微細なドロスがあり、これもメッキ鋼帯の品質を劣
化させる原因となる。(Prior art) In the Kasagasa bath for bath dip plating of zinc, aluminum, etc., inclusions (generally (referred to as dross), which adheres to the plated steel strip and causes deterioration of quality. However, in order to remove these inclusions, the dross located on the surface of the plating bath is mechanically removed. However, it is disclosed that the dross accumulated at the bottom of the bath is removed (Utility Act No. 60-122358) or that the dross accumulated at the bottom of the bath is handled.
In reality, in addition to the dross generated in this way, there is also fine dross floating in the bath, which also causes deterioration in the quality of the plated steel strip.
又、浴表面に位置するドロス、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しており、こ
のようなドロスを確実に除去することが強く要求されて
いるところである。Furthermore, 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. .
（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難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になされたものである。(Problems to be Solved by the Invention) The present invention has been made in order to solve these conventional difficulties and to reliably remove the dross present in the plating bath.
（問題点に％決するための手段作用）
本発明は、溶融メブキ室属をセラミックフィルターにて
濾過し、該メッキ雀属の流れに対向してガスを吹込み、
該ガス全前記フィルターを通過せしめ、微細気泡とし、
メッキ金属中を浮上させることを特徴とする溶融メッキ
金属の介在物除去方法にある。(Means for resolving the problem) The present invention involves filtering the molten plating through a ceramic filter, blowing gas against the flow of the plating, and
All of the gas is passed through the filter to form fine bubbles,
A method for removing inclusions from hot-dip plated metal, characterized by floating the inside of the plated metal.
即ち、本発明においては、セラミックフィルターで溶融
メッキ金属を濾過し、該金属中のドロスを除去すると共
に、ガス吹込みにより、ガスをフィルターに通過させ、
フィルター〇目詰４Ｑ’に防止し、かつフィルター通過
時にガスが微細化して、これが浴中全浮上することによ
り、微細ドロスが微細気泡の効果によシ、浴表面に速や
かに押上げられ、分離除去することができるものである
。That is, in the present invention, molten plated metal is filtered with a ceramic filter, dross in the metal is removed, and gas is passed through the filter by blowing gas,
This prevents clogging of the filter 4Q', and when the gas passes through the filter, it becomes fine and floats completely in the bath, causing fine dross to be quickly pushed up to the bath surface due to the effect of fine bubbles and separated. It is something that can be removed.
つまり、微細ドロスを除去したメッキ金属をさらにセラ
ミックフィルターで濾過し、微細気泡の浮上により除去
できなかったドロスを除去するものである。In other words, the plated metal from which the fine dross has been removed is further filtered through a ceramic filter to remove the dross that could not be removed due to the floating of fine bubbles.
しかして、本発明におけるセラミックフィルターとしで
は 例えば、Ａｚ、、、ｏｉ、系、ＺｒＯ２系、ＣｈＯ
系等の材質のものがあり、フィルターとしての気孔率は
４０〜８０ｖＯｔ％で、気孔径と１２でｉｌｊ、０．４
〜２、Ｑ閣がよく、厚みとしては、１０〜３０ｍで板状
、筒状に形成したものを用いることかできる。Therefore, the ceramic filter of the present invention may be made of, for example, Az, oi, ZrO2, ChO2, etc.
The porosity as a filter is 40 to 80vOt%, and the pore diameter and 12 are ilj, 0.4.
~2.The Q-shape is good, and the thickness can be 10 to 30 m and formed into a plate shape or a cylindrical shape.
吹込ガスとしては、窒素ガス等の不活性ガスが好ましい
。As the blown gas, an inert gas such as nitrogen gas is preferable.
溶融メッキ金属としては、？ｌｊえば亜鉛、アルミニウ
ム等の介在物除去が好ましくできる。What about hot dip plated metal? If lj, inclusions such as zinc and aluminum can be preferably removed.
かくして、浴融メツキラインの一例において、操業中の
メッキ釡鵬中の鉄＃！度が０．０３％以上になると、介
在物（ドロスノの発生が顕著となるが、上記のごとき本
発明によれば、鉄１１ｊＡｔ０．０２５％以下に除去す
ることができ、ドロスの発生全確実に防止することがで
きる。Thus, in one example of a bath melting line, the iron # during the plating process is in operation! When the concentration is 0.03% or more, the occurrence of inclusions (dross) becomes noticeable, but according to the present invention as described above, iron-11jAt can be removed to 0.025% or less, and the generation of dross can be completely prevented. It can be prevented.
次に本発明の方法の一？ＩＪ金図面によシ説明する。Next, one of the methods of the present invention? This will be explained with reference to IJ gold drawings.
？Ｉｊ ｌ
纂１図において、容器１内に筒状のセラミックフィルタ
ー２を図示のごとく配設し、該フィルター２内にガス吹
込管３を臨ませる。しかして溶融メッキ飯属４を導入口
５がら導き・フィルター２を通過させ、メッキ金＠４内
の介在物（ドロス〕を除去し、導出口６から排出する。? In Figure 1, a cylindrical ceramic filter 2 is disposed in a container 1 as shown, and a gas blowing pipe 3 is placed inside the filter 2. The hot-dip plated metal 4 is guided through the inlet 5 and passed through the filter 2 to remove inclusions (dross) in the plated metal 4, and then discharged from the outlet 6.
一方、ガス吹込管３から不活性ガス（窒素ガスノを吹込
みフィルター２を通過させ、メッキ金属４の浴中全浮上
させることによシ、フィルター２の目詰シを防止させる
とともにメッキ金属４中の微細介在物を浮上させ、浴表
面に介在物（ドロスノアを位置させるものである。On the other hand, by blowing an inert gas (nitrogen gas) from the gas blowing pipe 3 and letting it pass through the filter 2 so that the plated metal 4 is completely floated in the bath, clogging of the filter 2 is prevented and the plated metal 4 is completely floated. The process involves floating fine inclusions and positioning the inclusions (dross snores) on the bath surface.
図中８は処理前に容器１内全予熱すると同時に、メッキ
金ｈ４４の温度低下が大なる場合に加熱するバーナーで
ある。In the figure, reference numeral 8 denotes a burner that preheats the entire interior of the container 1 before processing, and at the same time heats the plated gold h44 when the temperature decreases significantly.
例 ２
第２図において、容器１内に板状のセラミックフィルタ
ー２を介して上室９と下室ｌＯに区分し・溶融メッキ生
属４を導入口５から導き、フィルター２を通過させ・メ
ッキ雀属４内の介在物（ドロスノを除去し、導出口６か
も排出する。Example 2 In Fig. 2, a container 1 is divided into an upper chamber 9 and a lower chamber 10 through a plate-shaped ceramic filter 2. Hot-dip plated material 4 is introduced from the inlet 5 and passed through the filter 2. Remove the inclusions (dross) inside the sparrow 4 and also discharge it from the outlet 6.
一方、下室１０に設けたプラグ１１から不活性ガスを吹
込み、フィルター２を通過させ目詰りを防止させるとと
もに吹込みガスの気泡金メッキ鴛属４の浴中を浮上させ
ることにより、浴表面に介在物（ドロスノアを位置させ
るものである。On the other hand, an inert gas is blown from a plug 11 provided in the lower chamber 10 to pass through the filter 2 to prevent clogging, and at the same time, the bubbles of the blown gas float the gold-plated porridge 4 in the bath. Inclusions (things that place Drosnoa).
図中８は、処理前に容器１内を予熱すると同時に、メッ
キ金属４の温度低下が大なる場合に加熱するバーナーで
ある。Reference numeral 8 in the figure denotes a burner that preheats the inside of the container 1 before processing and at the same time heats the plated metal 4 when the temperature drop is large.
（実施例ノ 次に本発明の実施例を挙げる。(Example No. Next, examples of the present invention will be described.
第２図に示すごとき態様の装置において、上室（７ｊ６
さ４５０ ＷＭ＋巾４００ 朋、長さ６００＋＋ｏ＋＋
Ｊ、下室（高さｌ ＯＯＷＩＪＲ＋巾４００ｍｍ＋長さ
６００ｗｍノにセラミックフィルター（材質Ａ＆０３９
０％、残５ｉ０２．ＭｇＯ等、気孔率５０％、平均気孔
径ｏ、ｓ■、厚み２０謔）で区切ジ、連続溶融庫鉛メッ
キラインのメッキ浴槽から流ｚｓｏＯｈ／分の亜鉛浴（
温度４’７０℃、成分Ｆｅ０．０５％、ＡｔＯ，２％±
０．ｏ２％、残亜鉛及び不純物）を連続的に導入口から
上室に導入し、下室底部・（プラグ面積９００ｃｄ 、
気孔率３０％、平均気孔径０．２ ｍｓ ）から窒素ガ
ス’ｔ： Ｏ−２ｍ”／分（吹込圧０−８ ｈ／ ａｉ
ｌ ＞ ｔｖ流量にて吹込み・フィルターを介して微細
気泡となし、上室内の亜鉛浴中全浮上せしめた。In the apparatus shown in FIG. 2, the upper chamber (7j6
Size: 450 WM + Width: 400 mm, Length: 600 ++ o ++
J, lower chamber (height l OOWIJR + width 400mm + length 600wm) with ceramic filter (material A & 039
0%, remaining 5i02. MgO, etc., porosity 50%, average pore diameter o, s, thickness 20 cm), separated by a zinc bath (flow rate zsoOh/min) from the plating bath of the continuous melting chamber lead plating line (
Temperature 4'70℃, ingredients Fe0.05%, AtO, 2%±
0. o2%, residual zinc and impurities) were continuously introduced into the upper chamber from the inlet, and the bottom of the lower chamber (plug area 900 cd,
Porosity 30%, average pore diameter 0.2 ms) to nitrogen gas 't: O-2 m''/min (blow pressure 0-8 h/ai
Fine bubbles were formed through the blowing and filter at a flow rate of l>tv, and all of the bubbles were floated in the zinc bath in the upper chamber.
一方、上室からフィルターを介して下室へ移動した亜鉛
は導出口から取出し、上記メツキラインの浴権へ循環せ
しめた。導出口よシ取出した亜鉛は・温ｉ４６０ ′Ｃ
Ｆ ｅ Ｏ，０２３％となり、介在物除去が確実にでき
た。On the other hand, the zinc that had moved from the upper chamber to the lower chamber via the filter was taken out from the outlet and circulated to the bath of the above-mentioned metal coating line. The zinc taken out from the outlet has a temperature of 460'C.
The F e O content was 23%, and inclusions could be removed reliably.
（発明の効果）
本発明の方法によシ、メッキ雀属中の介在物（ドロス）
を確実に除去することができ、介在物によるメッキ製品
品質の劣化を確実に防止することかで；きる等の効果が
得られる。(Effect of the invention) By the method of the present invention, inclusions (dross) in plated sparrow
It is possible to reliably remove the inclusions and reliably prevent deterioration of the quality of the plated product due to inclusions, thereby achieving the following effects.
第１図は本発明の方法の１例を示すもので（イ）は側面
図、（ロ）は（イ）のＡ−Ａ矢視図、第２図は本発明方
法の別の例を示す説明図である。
１・・・・・・容器
２・・・・・・セラミックフィルター
３・・・・ ・・ガス吹込管Figure 1 shows one example of the method of the present invention, (a) is a side view, (b) is a view taken along the line A-A in (a), and Figure 2 is another example of the method of the present invention. It is an explanatory diagram. 1... Container 2... Ceramic filter 3... Gas blowing pipe
Claims (1)
メッキ金属の流れに対向してガスを吹込み、該ガスを前
記フィルターを通過せしめ、微細気泡とし、メッキ金属
中を浮上させることを特徴とする溶融メッキ金属の介在
物除去方法。A melting method characterized by filtering the molten plated metal through a ceramic filter, blowing gas against the flow of the plated metal, and causing the gas to pass through the filter to form fine bubbles and float in the plated metal. Method for removing inclusions from plated metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4163186A JPH0617558B2 (en) | 1986-02-28 | 1986-02-28 | Method for removing inclusions of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4163186A JPH0617558B2 (en) | 1986-02-28 | 1986-02-28 | Method for removing inclusions of molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62202070A true JPS62202070A (en) | 1987-09-05 |
| JPH0617558B2 JPH0617558B2 (en) | 1994-03-09 |
Family
ID=12613676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4163186A Expired - Lifetime JPH0617558B2 (en) | 1986-02-28 | 1986-02-28 | Method for removing inclusions of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617558B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01147047A (en) * | 1987-12-03 | 1989-06-08 | Sumitomo Metal Ind Ltd | Controlling method for galvanizing bath |
| JPH01147046A (en) * | 1987-12-03 | 1989-06-08 | Sumitomo Metal Ind Ltd | Controlling method for galvanizing bath |
| JPH0331460A (en) * | 1989-06-29 | 1991-02-12 | Nkk Corp | Device for recovering dross in pot of hot dipping device |
-
1986
- 1986-02-28 JP JP4163186A patent/JPH0617558B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01147047A (en) * | 1987-12-03 | 1989-06-08 | Sumitomo Metal Ind Ltd | Controlling method for galvanizing bath |
| JPH01147046A (en) * | 1987-12-03 | 1989-06-08 | Sumitomo Metal Ind Ltd | Controlling method for galvanizing bath |
| JPH0331460A (en) * | 1989-06-29 | 1991-02-12 | Nkk Corp | Device for recovering dross in pot of hot dipping device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617558B2 (en) | 1994-03-09 |
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