JPH03117886A - Dipping pipe for molten metal - Google Patents
Dipping pipe for molten metalInfo
- Publication number
- JPH03117886A JPH03117886A JP25614889A JP25614889A JPH03117886A JP H03117886 A JPH03117886 A JP H03117886A JP 25614889 A JP25614889 A JP 25614889A JP 25614889 A JP25614889 A JP 25614889A JP H03117886 A JPH03117886 A JP H03117886A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- molten metal
- molten
- pipe
- main body
- 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 35
- 239000002184 metal Substances 0.000 title claims abstract description 35
- 238000007598 dipping method Methods 0.000 title abstract 5
- 238000007654 immersion Methods 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 229910052575 non-oxide ceramic Inorganic materials 0.000 abstract description 2
- 239000011225 non-oxide ceramic Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910021426 porous silicon Inorganic materials 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はアルミニウム、亜鉛などの溶融金属を扱う炉で
使用する浸漬管に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an immersion tube for use in a furnace handling molten metals such as aluminum and zinc.
アルミニウム溶解炉や保持炉のような溶融アルミニウム
を扱う炉あるいは溶融亜鉛を扱う炉などにおいて、溶融
金属中に浸漬する浸漬管が用いられていた。この浸漬管
としては、たとえば第７図に示すような溶湯Ｙ中に浸漬
するヒータ保護管１１、あるいは第８図に示すような鋳
造装置において溶湯Ｙ中に浸漬するストーク１２などが
あり、これらの浸漬管は鋳鉄あるいは多孔質炭化珪素か
らなっていた。Immersion tubes that are immersed in molten metal have been used in furnaces that handle molten aluminum, such as aluminum melting furnaces and holding furnaces, or furnaces that handle molten zinc. Examples of this immersion tube include a heater protection tube 11 immersed in the molten metal Y as shown in FIG. 7, or a stalk 12 immersed in the molten metal Y in a casting machine as shown in FIG. The dip tubes were made of cast iron or porous silicon carbide.
しかし、鋳鉄からなる浸漬管は鉄分が溶湯中に溶は出し
、溶湯を汚染するとともに寿命も短く、溶湯の性状安定
剤であるフラックスを溶湯中に投入した場合は２週間程
度、投入しない場合は１ケ月程度しか使用できなかった
。また、多孔質炭化珪素を用いた場合は使用中に溶湯が
管内部へ侵入し、ヒータ保護管１１の場合はヒータを損
傷するという問題があり、寿命も１〜２ケ月程度と短い
ものであった。However, with cast iron immersion tubes, iron content dissolves into the molten metal, contaminates the molten metal, and has a short lifespan. It could only be used for about a month. In addition, when porous silicon carbide is used, there is a problem that molten metal enters the inside of the tube during use, and in the case of the heater protection tube 11, the heater is damaged, and the lifespan is short, about 1 to 2 months. Ta.
そこで、これらの問題点を解決するために、近年緻密質
の窒化珪素質セラミックスからなる浸漬管が用いられて
いる（たとえば特開昭６２−２７３９２号公報など参照
）。In order to solve these problems, dip tubes made of dense silicon nitride ceramics have recently been used (see, for example, Japanese Patent Laid-Open No. 62-27392).
ところが、窒化珪素質セラミックスを用いた浸漬管であ
っても、湯面近くで発生した溶融金属の酸化物が付着し
、この付着酸化物は次第に成長して浸漬管を破壊させた
り、また正常な炉操業を妨げるなどの問題点があった。However, even with immersion tubes made of silicon nitride ceramics, molten metal oxides generated near the hot water surface adhere, and these deposited oxides gradually grow and can destroy the immersion tube or cause it to malfunction. There were problems such as interfering with furnace operation.
そのため、日に１回以上この付着酸化物を除去しなけれ
ばならず、手間がかかるだけでなく、除去作業中に誤っ
て保護管を損傷する事故が生じる恐れがあった。Therefore, the attached oxide must be removed at least once a day, which is not only time-consuming but also poses a risk of accidentally damaging the protective tube during the removal process.
上記に鑑みて本発明は、浸漬管本体の湯面より上方外周
部にフランジを取り付け、該フランジで支持され、下端
を溶湯中に浸漬する外筒を備えたものである。In view of the above, the present invention includes a flange attached to the outer periphery of the immersion tube body above the molten metal surface, an outer cylinder supported by the flange, and whose lower end is immersed in the molten metal.
本発明によれば、浸漬管本体の周囲にフランジと外筒で
密閉空間を形成することによって、浸漬管本体に接して
いる湯面を外気と遮断し、熔融金属の酸化物の発生を防
止できる。According to the present invention, by forming a sealed space around the immersion tube body with the flange and outer cylinder, the hot water surface in contact with the immersion tube body is isolated from the outside air, and the generation of oxides in the molten metal can be prevented. .
また、本発明によれば、フランジや外筒に開花部を設け
て、溶湯の性状安定剤であるフラックスを外筒の内側へ
投入し、溶湯上に浮いたフラ・７クスを常に浸漬管本体
の周囲に保持することによって、湯面を外気と遮断し、
溶融金属の酸化物の発生を防止できる。Further, according to the present invention, a flowering part is provided on the flange or the outer cylinder, and flux, which is a property stabilizer for the molten metal, is introduced into the inner side of the outer cylinder, and the flux floating on the molten metal is always removed from the immersion tube body. By keeping the water around the
The generation of oxides in molten metal can be prevented.
さらにいずれの場合にも、外筒の外側には酸化物が付着
するが、その場合は外筒自体を容易に交換することがで
きる。Furthermore, in either case, oxides adhere to the outside of the outer cylinder, but in that case, the outer cylinder itself can be easily replaced.
以下本発明実施例を図によって説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は浸漬ヒータ用保護管に適用した例であり、窒化
珪素質セラミックス、サイアロンなどの非酸化物セラミ
ックスからなる浸漬管本体１の湯面ＹＩより上方部にフ
ランジ２を取付け、このフランジ２に円筒状の外筒３の
フランジ３ａを載置して、外筒３を支持している。また
、炉操業中に湯面Ｙ、が破線の位置に下がった場合でも
必ず外筒３の下端が溶湯Ｙ中に浸漬されるように、あら
かじめフランジ２の取付位置や外筒３の長さは設定され
ている。Fig. 1 shows an example of application to a protection tube for an immersion heater, in which a flange 2 is attached above the hot water level YI of an immersion tube body 1 made of non-oxide ceramics such as silicon nitride ceramics and sialon. The flange 3a of the cylindrical outer cylinder 3 is placed on the holder to support the outer cylinder 3. In addition, the mounting position of the flange 2 and the length of the outer cylinder 3 are determined in advance so that the lower end of the outer cylinder 3 is always immersed in the molten metal Y even if the melt level Y falls to the position indicated by the broken line during furnace operation. It is set.
そのため、浸漬管本体１、フランジ２、外筒３および湯
面Ｙ１によって密閉空間Ｓが形成され、浸漬管本体１に
接する部分の湯面Ｙ、は外気から遮断され、酸化物の発
生を防止することができる。Therefore, a closed space S is formed by the immersion tube main body 1, flange 2, outer cylinder 3, and hot water surface Y1, and the hot water surface Y in the portion that contacts the immersion tube main body 1 is shielded from the outside air to prevent the generation of oxides. be able to.
また、上記フランジ２は第２図（ａ） （ｂ）に示すよ
うに２つに分割されたものであり、これらを浸漬管本体
１の所定位置に取付けて、ステンレスなどからなる固定
バンド４を巻付けることによって、容易に固定すること
ができる。なお、フランジ２は取外しをする必要がない
ことから、セメントなどで完全に固着してもよい。The flange 2 is divided into two parts as shown in FIGS. 2(a) and 2(b), and these parts are attached to predetermined positions on the immersion tube body 1, and a fixing band 4 made of stainless steel or the like is attached. It can be easily fixed by winding it. Note that since the flange 2 does not need to be removed, it may be completely fixed with cement or the like.
さらに、外筒３も第３図（ａ） （ｂ）に示すように２
つに分割されており、これらを固定バンド５で巻付けて
固定し、フランジ部３ａを前記フランジ２に載置させて
支持する。このとき、フランジ２とフランジ部３ａは固
着せず、外筒３は固定バンド５を外すことによって容易
に取外すことができるようになっている。したがって、
使用中に外筒３に酸化物が付着した場合は、外筒３のみ
容易に交換することができる。Furthermore, the outer cylinder 3 also has two parts as shown in FIGS.
These parts are wrapped and fixed with a fixing band 5, and the flange part 3a is placed on the flange 2 and supported. At this time, the flange 2 and the flange portion 3a are not fixed, and the outer cylinder 3 can be easily removed by removing the fixing band 5. therefore,
If oxides adhere to the outer cylinder 3 during use, only the outer cylinder 3 can be easily replaced.
なお、上記実施例では、取付け、取外しを容易にするた
めに、フランジ２、外筒３をいずれも分割型としたが、
外筒３が取外し可能な形状であれば、必ずしも分割型と
する必要はない。また、外筒３は円筒に限らす角筒状な
どでもよい。さらに、これらフランジ２、外筒３の材質
は、サイアロン、窒化珪素などの非酸化物系緻密質セラ
ミックスあるいは多孔質炭化珪素などを用いればよく、
フランジ２は直接溶湯Ｙと接することがないためステン
レスなどでも良い。In the above embodiment, both the flange 2 and the outer cylinder 3 are of split type in order to facilitate installation and removal.
As long as the outer cylinder 3 has a removable shape, it does not necessarily have to be of a split type. Further, the outer cylinder 3 is not limited to a cylinder, but may be a rectangular cylinder or the like. Furthermore, the material of the flange 2 and the outer cylinder 3 may be non-oxide dense ceramics such as sialon or silicon nitride, or porous silicon carbide.
Since the flange 2 does not come into direct contact with the molten metal Y, it may be made of stainless steel or the like.
また上記実施例は浸漬ヒータ用保護管に適用した例を示
したが、この他鋳造装置用ストークなどであっても同様
に適用することができる。Furthermore, although the above embodiments show examples in which the present invention is applied to a protection tube for an immersion heater, the present invention can also be similarly applied to other objects such as a stalk for a casting device.
次に本発明の他の実施例を説明する。Next, another embodiment of the present invention will be described.
第４図に示す浸漬管は、前記実施例と類似の構造である
が、浸漬管本体１の湯面Ｙ、より上方部に取付けたフラ
ンジ２は爪２ａを有し、この爪２ａに外筒３の開孔部３
ｂをひっかけて支持してあり、この外筒３の下端部は常
に溶湯Ｙ中に浸漬するようになっている。The immersion tube shown in FIG. 4 has a structure similar to that of the embodiment described above, but a flange 2 attached above the hot water level Y of the immersion tube body 1 has a claw 2a, and the outer tube is attached to the claw 2a. 3 opening part 3
The lower end of the outer cylinder 3 is always immersed in the molten metal Y.
この浸漬管は、前記外筒３の開孔部３ｂ、あるいはフラ
ンジ２と外筒３の間の開孔部から、外筒３の内側へフラ
ックス６を投入することができ、このフラックス６は湯
面Ｙ１に浮いたまま浸漬管本体１の周囲に保持されるた
め、湯面Ｙ、を外気から遮断でき、酸化物の発生を防止
することができる。This immersion tube allows flux 6 to be introduced into the outer cylinder 3 through the opening 3b of the outer cylinder 3 or the opening between the flange 2 and the outer cylinder 3, and this flux 6 is Since it is held around the immersion tube main body 1 while floating on the surface Y1, the hot water surface Y can be shielded from the outside air, and the generation of oxides can be prevented.
また、フランジ２は第５図（ａ）（ｂ）に、外筒３は第
６図（ａ） （ｂ）にそれぞれ示すように、いずれも２
つに分割されたものであり、ステンレスなどからなる固
定ハンド４．５で取付けている。In addition, the flange 2 is shown in FIGS. 5(a) and (b), and the outer cylinder 3 is shown in FIGS. 6(a) and (b).
It is divided into two parts and is attached with fixed hands 4.5 made of stainless steel or the like.
次に、第１図、第４図に示した本発明の浸漬管を試作し
、アルミニウム溶湯中に浸漬して使用試験を行った。い
ずれも浸漬管本体１は窒化珪素質セラミックスにより形
成し、フランジ２、外筒３は多孔質炭化珪素により形成
して、第４図に示した例についてはフラックス６として
Ｎａ系のものを用いた。Next, the immersion tube of the present invention shown in FIGS. 1 and 4 was prototyped and tested by immersing it in molten aluminum. In both cases, the immersion tube body 1 was made of silicon nitride ceramics, the flange 2 and the outer tube 3 were made of porous silicon carbide, and in the example shown in Fig. 4, Na-based flux 6 was used. .
これらの本発明実施例に係る浸漬管は、浸漬管本体１に
はほとんど酸化物が付着せず、外筒３を交換するだけで
１年以上使用することができた。The dip tubes according to these examples of the present invention had almost no oxides attached to the dip tube body 1, and could be used for more than one year just by replacing the outer tube 3.
比較例としてフランジ２、外筒３を用いずに浸漬管本体
１のみで使用した場合は付着した酸化物を月に１回以上
除去しなければならないことから、本発明の浸漬管は、
メンテナンスが容易で長期使用が可能であることがわか
る。As a comparative example, if the immersion tube main body 1 is used without using the flange 2 or the outer cylinder 3, the attached oxide must be removed at least once a month, so the immersion tube of the present invention
It can be seen that maintenance is easy and long-term use is possible.
枝上のように本発明によれば、浸漬管本体の湯面より上
方部にフランジを取付け、このフランジに支持され、下
端を溶湯中に浸漬する外筒を備えたことによって、浸漬
管本体に接する部分の湯面を外気から遮断して、溶融金
属酸化物の発生を防止することができるため、浸漬管本
体への酸化物の付着がなく、また、外筒に酸化物が付着
した場合は容易に交換することができるため、メンテナ
ンスが容易であり、長期間使用することができる。According to the present invention, a flange is attached above the molten metal surface of the immersion tube body, and an outer cylinder is supported by the flange and whose lower end is immersed in the molten metal. The molten metal surface in contact with the outside air can be blocked from the outside air to prevent the generation of molten metal oxides, so oxides will not adhere to the immersion tube body, and if oxides adhere to the outer cylinder, Since it can be easily replaced, maintenance is easy and it can be used for a long period of time.
第１図は本発明実施例に係る溶融金属用浸漬管を示す断
面図である。第２図（ａ）はフランジの平面図、同図（
ｂ）は同じく側面図である。第３図（ａ）は外筒の平面
図、同図（ｂ）は同じく側面図である。
第４図は本発明の他の実施例を示す断面図、第５図（ａ
）はフランジの平面図、同図（ｂ）は同じく側面図であ
る。第６図（ａ＞は外筒の平面図、同図（ｂ）は同じく
側面図である。
第７図は溶融金属浸漬管の一例である浸漬ヒータ用保護
管を示す断面図、第８図は同じく鋳造装置用ストークを
示す断面図である。
１・・・浸漬管本体
２・・・フランジ
３・・・外筒
４．５・・・固定バンドFIG. 1 is a sectional view showing a molten metal immersion tube according to an embodiment of the present invention. Fig. 2(a) is a plan view of the flange;
b) is also a side view. FIG. 3(a) is a plan view of the outer cylinder, and FIG. 3(b) is a side view thereof. FIG. 4 is a sectional view showing another embodiment of the present invention, and FIG.
) is a plan view of the flange, and (b) is a side view of the flange. Fig. 6 (a) is a plan view of the outer cylinder, and Fig. 6 (b) is a side view thereof. Fig. 7 is a sectional view showing a protection tube for an immersion heater, which is an example of a molten metal immersion tube. Fig. 8 1 is a cross-sectional view showing a stalk for a casting device. 1... Immersion tube body 2... Flange 3... Outer cylinder 4.5... Fixing band
Claims (3)
り上方外周部にフランジを取付け、該フランジに、下端
部が溶湯中に浸漬する外筒を支持してなる溶融金属用浸
漬管。(1) An immersion tube for molten metal, in which a flange is attached to the outer periphery above the hot water level of the immersion tube body used by being immersed in molten metal, and the flange supports an outer cylinder whose lower end is immersed in the molten metal. .
面との管に密閉空間が形成されていることを特徴とする
請求項第１項記載の溶融金属用浸漬管。(2) The immersion tube for molten metal according to claim 1, wherein a sealed space is formed in the tube between the flange and outer cylinder and the hot water surface around the immersion tube main body.
入のための開孔部が形成されていることを特徴とする請
求項第１項記載の溶融金属用浸漬管。(3) The immersion tube for molten metal according to claim 1, wherein an opening for introducing flux is formed in the flange and/or the outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1256148A JP2997807B2 (en) | 1989-09-29 | 1989-09-29 | Immersion tube for molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1256148A JP2997807B2 (en) | 1989-09-29 | 1989-09-29 | Immersion tube for molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03117886A true JPH03117886A (en) | 1991-05-20 |
| JP2997807B2 JP2997807B2 (en) | 2000-01-11 |
Family
ID=17288572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1256148A Expired - Fee Related JP2997807B2 (en) | 1989-09-29 | 1989-09-29 | Immersion tube for molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2997807B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357387A (en) * | 2001-06-04 | 2002-12-13 | Meichuu:Kk | Structure for immersion type molten metal preserving furnace |
| EP2165620A1 (en) | 2008-09-17 | 2010-03-24 | Futek, Inc. | Hair iron |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6148972B2 (en) * | 2013-12-03 | 2017-06-14 | 三井金属鉱業株式会社 | Metal melt member, method for producing metal melt member, and metal melt holding furnace |
-
1989
- 1989-09-29 JP JP1256148A patent/JP2997807B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357387A (en) * | 2001-06-04 | 2002-12-13 | Meichuu:Kk | Structure for immersion type molten metal preserving furnace |
| EP2165620A1 (en) | 2008-09-17 | 2010-03-24 | Futek, Inc. | Hair iron |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2997807B2 (en) | 2000-01-11 |
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