JPS62288484A - Vessel for aluminum holding furnace - Google Patents
Vessel for aluminum holding furnaceInfo
- Publication number
- JPS62288484A JPS62288484A JP13159986A JP13159986A JPS62288484A JP S62288484 A JPS62288484 A JP S62288484A JP 13159986 A JP13159986 A JP 13159986A JP 13159986 A JP13159986 A JP 13159986A JP S62288484 A JPS62288484 A JP S62288484A
- Authority
- JP
- Japan
- Prior art keywords
- vessel
- weight
- lining
- holding furnace
- aluminum
- 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
- 229910052782 aluminium Inorganic materials 0.000 title claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 12
- 229910052878 cordierite Inorganic materials 0.000 claims description 8
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000011823 monolithic refractory Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明は、溶融したアルミニウム又はその合金を溶融状
態に保持するアルミニウム保持炉に用いられるベッセル
に関する。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a vessel used in an aluminum holding furnace that holds molten aluminum or its alloy in a molten state.
従来、アルミニウム保持炉用ベッセルは、１３重量％の
ＳｉＪと８７重量％のＡｌｔｏｚ の焼成体から構成さ
れている。Conventionally, an aluminum holding furnace vessel is composed of a fired body of 13% by weight SiJ and 87% by weight Altoz.
しかし、上記組成の焼成体からなる従来のベッセルは、
アルミニウム合金鋳物の溶湯を投入し、２〜３ケ月稼動
すると、その内部に内側から外側に向けｌＯ〜２０ｆｌ
程度の黒色反応があられれ、この黒色反応部分と他の部
分との熱膨張差によりクランクが生ずる問題がある。However, conventional vessels made of fired bodies with the above composition,
After pouring molten aluminum alloy casting and operating it for 2 to 3 months, lO to 20fl flows from the inside to the outside.
A certain degree of black reaction occurs, and there is a problem in that cranks occur due to the difference in thermal expansion between this black reaction area and other areas.
かかる問題の発生は、次の理由によると考えられる。The occurrence of this problem is considered to be due to the following reasons.
すなわち、ベッセルの内表面には、溶解炉中でフラック
スの投入を受け、常に活性化している溶湯が接触してい
るため、ベッセルの成分であるＳｉ０ｇ中のＳｉが次式
によりピックアンプされ、ベッセルの一部が高アルミナ
化する。その結果、アルミニウムと置換して黒色反応が
生じる。In other words, since the inner surface of the vessel is in contact with the molten metal that is constantly activated due to the injection of flux in the melting furnace, Si in Si0g, which is a component of the vessel, is pick-amplified according to the following formula, and the inner surface of the vessel is A part of the material becomes high in alumina. As a result, it replaces aluminum and a black reaction occurs.
３５ｉ（ｈ ＋ ４ Ａｌ→２ Ａｌｔｏｓ ＋ ３
Ｓｉ一方、ベッセルにおける黒色反応が生じた部分と他
の部分には、溶湯がラドルで汲出される毎に溶湯面が変
動することによって繰返し熱応力が加えられると共に、
黒色反応部分と他の部分との熱膨張差により、又、溶湯
における再昇温時と降温時との膨張が相違することも相
俟ってベッセルにクランクが発生する。35i (h + 4 Al→2 Altos + 3
On the other hand, thermal stress is repeatedly applied to the part where the black reaction occurred and other parts of the vessel as the molten metal surface fluctuates every time the molten metal is pumped out by the ladle.
Crank occurs in the vessel due to the difference in thermal expansion between the black reaction portion and other portions, and also due to the difference in expansion of the molten metal when the temperature is re-heated and when the temperature is lowered.
又、汲出口の温度変化で未溶融アルミニウム合金が積り
、かかる未溶融アルミニウム合金が溶湯と共に鋳込まれ
た際に、製品にハードスポットが生じる問題がある。In addition, there is a problem in that unmelted aluminum alloy accumulates due to temperature changes at the pumping outlet, and when such unmolten aluminum alloy is cast together with molten metal, hard spots occur in the product.
そこで、本発明は、黒色反応及びクラックの発生等を防
止し得るようにしたアルミニウム保持炉用ベアセルを提
供とようとするものである。Therefore, the present invention aims to provide a bare cell for an aluminum holding furnace that can prevent the black reaction and the occurrence of cracks.
本発明は、前記問題点を解決するため、５ｉＯ１５〜２
０重量％、Ａ１＊Ｏｉ ７０〜９０重量％及びコージラ
イト１〜ＩＯ重量％の焼成体からなるベン七本体の内部
に、セラミツフッアバ−入り不定形耐火物からなる内張
りを一体的に設け、前記内張りにコロイダルＢＮを浸透
させたものである。In order to solve the above problems, the present invention provides 5iO15-2
A lining made of a monolithic refractory containing ceramic fiber is integrally provided inside the Ben-7 main body made of a fired body of 0% by weight, 70 to 90% by weight of A1*Oi, and 1 to IO% by weight of cordierite. is impregnated with colloidal BN.
ベッセル本体に対する溶湯の接触が、アルミニウムに対
し難ぬれ性のＢＮを浸透させた内張りによって低減され
、かつベッセル本体の熱衝Ｈ抵抗性がコージライトの含
有により高められる。Contact of the molten metal to the vessel body is reduced by the lining impregnated with BN, which is difficult to wet aluminum, and the thermal shock H resistance of the vessel body is enhanced by the inclusion of cordierite.
以下、本発明の実施例を第１図、第２図により説明する
。Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.
図中１はベッセル本体で、このベッセル本体１は、１３
重量％の５ｉＯ１，８２重量％のＡ１．Ｏ，及び５重量
％のコージライト（菫青石）の焼成体から形成されてい
る。ベッセル本体１の内部には、セラミックファイバー
入り不定形耐火物の焼成体からなる適宜厚さの内張り２
が一体的に設けられており、この内張り２には、２０重
量％のＢＮ粉末を含有するコロイダルＢＮが浸透（含浸
）されている。In the figure, 1 is the vessel main body, and this vessel main body 1 has 13
5iO1 by weight, 82% by weight A1. It is formed from a fired body of cordierite (cordierite) containing O and 5% by weight. Inside the vessel body 1, a lining 2 of an appropriate thickness is made of a fired body of monolithic refractory containing ceramic fibers.
is integrally provided, and this inner lining 2 is permeated (impregnated) with colloidal BN containing 20% by weight of BN powder.
なお、図において３はヒータを挿入するための挿入孔、
４はヒータの先端部を支持する支持台である。In addition, in the figure, 3 is an insertion hole for inserting a heater,
4 is a support stand that supports the tip of the heater.
上記アルミニウム保持炉用ベッセルは、次のようにして
製造される。The aluminum holding furnace vessel described above is manufactured as follows.
まず、離型剤の塗布処理等を施した内張用外枠と中型（
中子）を組立て、両者間によく練ったセラミックファイ
バー入り不定形耐火物を突き棒等を用いて良く詰めた後
、約８０℃の熱風で乾燥して内張成形体を成形し、しか
る後内張用外型を脱型する。First, the outer frame for lining and the medium-sized (
After assembling the core) and packing well-kneaded monolithic refractories containing ceramic fibers between the two using a push rod, etc., dry with hot air at about 80℃ to form a lined molded body. Remove the outer mold for lining.
ついで、離型剤の塗布処理等を施した本体用外型と上述
した如く中型に取付けられた内張成形体とを組立て、本
体用外型と内張成形体との間に、バインダーを入れてよ
く混練したキャスタブル（１３重量％の５ｉ０１．８２
重量％の＾！ｔｏ、及び５重量％のコージライトからな
る）を棒バイブレータ等を用いて流し込んだ後、硬化乾
燥して内張成形体と一体の本体成形体、すなわちベッセ
ル成形体を成形する。Next, the outer mold for the main body, which has been treated with a release agent, etc., and the lining molded body attached to the middle mold as described above are assembled, and a binder is inserted between the outer mold for the main body and the lining molded body. castable (13% by weight of 5i01.82)
Weight%^! and 5% by weight of cordierite) is poured using a rod vibrator or the like, and then hardened and dried to form a main body molded body integrated with a lining molded body, that is, a vessel molded body.
上記ベッセル成形体の成形後、直ちに本体用外型と中型
とを脱型し、乾燥する。Immediately after molding the vessel molded body, the outer mold for the main body and the middle mold are removed and dried.
この乾燥後、ベッセル成形体を焼成炉中に装入し、最高
４５０℃で焼成する。After this drying, the vessel molded body is placed in a firing furnace and fired at a maximum temperature of 450°C.
ベッセル成形体の焼成後、その内部すなわち内張成形体
側に２０重量％のＢＮ粉末を含有したコロイダルＢＮを
浸透させてから乾燥すると、所望のベッセルができる。After firing the vessel molded body, colloidal BN containing 20% by weight of BN powder is infiltrated into the interior of the vessel, that is, on the lining molded body side, and then dried to form a desired vessel.
ここで、キャスタブル中のコージライトは、１重量％未
満では、熱衝撃抵抗性の向上がみられず、かつ１０重量
％を超えると、ベアセルの強度が低下する。Here, when the cordierite in the castable is less than 1% by weight, no improvement in thermal shock resistance is observed, and when it exceeds 10% by weight, the strength of the bare cell is reduced.
以上のように本発明によれば、ベンセル本体に対するア
ルミニウム合金等の溶湯が、アルミニウムに対して難ぬ
れ性のＢＮを浸透させた内張りによって低減され、かつ
ベッセル本体の熱衝撃抵抗性がコージライトの含有によ
り高められるので、黒色発心の発生とこれに伴うクラン
クの発生を大幅に低減できると共に、クランクをヘアク
ランク程度の微細なものとすることができ、ひいては溶
湯の付着及びドロスの発生等を激減することができる。As described above, according to the present invention, the amount of molten metal such as aluminum alloy on the vessel body is reduced by the lining in which aluminum is impregnated with BN, which is difficult to wet with aluminum, and the thermal shock resistance of the vessel body is improved compared to that of cordierite. Since the content is increased, it is possible to significantly reduce the occurrence of black cores and the resulting cranks, and it is also possible to make the cranks as fine as hair cranks, which in turn drastically reduces the adhesion of molten metal and the generation of dross. can do.
図は本発明に係るアルミニウム保持炉用ベッセルの一実
施例を示すもので、第１図は平面図、第２図は第１図に
おける■−■線断面図である。
１−−−−ベッセル本体
２−−−一内張り
第１図
■づ
第２図The drawings show an embodiment of a vessel for an aluminum holding furnace according to the present invention, and FIG. 1 is a plan view, and FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1. 1---Vessel body 2---1 Lining Figure 1 ■Diagram 2
Claims (1)
重量％及びコージライト１〜１０重量％の焼成体からな
るベッセル本体の内部に、セラミックファイバー入り不
定形耐火物の焼成体からなる内張りを一体的に設け、前
記内張りにコロイダルＢＮを浸透させたことを特徴とす
るアルミニウム保持炉用ベッセル。SiO_25-20% by weight, Al_2O_370-90
A lining made of a fired body of monolithic refractory containing ceramic fibers is integrally provided inside a vessel body made of a fired body of 1 to 10% by weight of cordierite, and colloidal BN is infiltrated into the lining. An aluminum holding furnace vessel featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13159986A JPS62288484A (en) | 1986-06-06 | 1986-06-06 | Vessel for aluminum holding furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13159986A JPS62288484A (en) | 1986-06-06 | 1986-06-06 | Vessel for aluminum holding furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62288484A true JPS62288484A (en) | 1987-12-15 |
Family
ID=15061828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13159986A Pending JPS62288484A (en) | 1986-06-06 | 1986-06-06 | Vessel for aluminum holding furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62288484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02122760A (en) * | 1988-10-31 | 1990-05-10 | Nec Corp | Facsimile equipment |
-
1986
- 1986-06-06 JP JP13159986A patent/JPS62288484A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02122760A (en) * | 1988-10-31 | 1990-05-10 | Nec Corp | Facsimile equipment |
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