JPH05155676A - Refractory molded item and its use - Google Patents
Refractory molded item and its useInfo
- Publication number
- JPH05155676A JPH05155676A JP4103425A JP10342592A JPH05155676A JP H05155676 A JPH05155676 A JP H05155676A JP 4103425 A JP4103425 A JP 4103425A JP 10342592 A JP10342592 A JP 10342592A JP H05155676 A JPH05155676 A JP H05155676A
- Authority
- JP
- Japan
- Prior art keywords
- molded article
- outer shell
- article according
- shell
- inner shell
- 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
- 230000006698 induction Effects 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical group O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 5
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 4
- 230000005672 electromagnetic field Effects 0.000 claims description 18
- 238000010079 rubber tapping Methods 0.000 claims description 16
- 230000009970 fire resistant effect Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 230000003750 conditioning effect Effects 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 5
- 239000004917 carbon fiber Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011470 perforated brick Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/60—Pouring-nozzles with heating or cooling means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Details (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，少なくとも部分的に覆
われる少なくとも２つの非金属殻体を持つ耐火成形品に
関する。FIELD OF THE INVENTION This invention relates to refractory moldings having at least two non-metallic shells which are at least partially covered.
【０００２】[0002]
【従来の技術】この種の耐火成形品は，例えば治金容器
の出湯口に摩耗部材として使用される。内側殻体は通
常，セラミツクから成り，このセラミツクは金属溶湯に
対しては抵抗力があるが，しかし僅かな耐温度変化性し
か持つていない。そのために，成形品の加熱の際に既に
亀裂形成が起こることがしばしばある。この亀裂形成を
抑えるために，外側殻体が設けられている。この外側殻
体は高い耐温度変化性の材料から成る。2. Description of the Related Art A refractory molded article of this type is used as a wear member, for example, at a tap of a metallurgical container. The inner shell is usually composed of ceramics, which are resistant to molten metal, but have little resistance to temperature changes. As a result, cracking often occurs already when the molded part is heated. An outer shell is provided to prevent this crack formation. This outer shell is made of a highly temperature-resistant material.
【０００３】ドイツ連邦共和国特許出願公開第３４１２
３８８号明細書に，セラミツク出湯管が金属板外皮によ
り補強されかつ保護されている出湯口が記載されてい
る。この種の金属板外皮は，成形品が誘導コイルに組み
込まれている場合，使用され得ない。なぜならばこの金
属板外皮は誘導コイルの電磁界において渦電流により，
いかなる安定化作用も失うほどに加熱されるからであ
る。更に，この外皮は電磁界を，望ましくなく，内側殻
体に対して遮蔽する。Published German patent application 3412
No. 388 describes a tap hole in which a ceramic tap pipe is reinforced and protected by a metal plate skin. This type of sheet metal skin cannot be used if the molded part is incorporated in an induction coil. Because the skin of the metal plate is eddy current in the electromagnetic field of the induction coil,
It is heated so that it loses any stabilizing effect. Furthermore, this skin undesirably shields the electromagnetic field against the inner shell.
【０００４】１９９０年２月２２日付欧州特許出願第９
０１０３３８１号明細書には，支持部分に管部分がはめ
込まれている出湯口が記載されている。両部分はセラミ
ツク材料から成る。これらの部分は焼きばめにより結合
されている。European Patent Application No. 9 dated February 22, 1990
No. 0103381 describes a tap hole in which a tube portion is fitted in a support portion. Both parts are made of ceramic material. These parts are joined by shrink fit.
【０００５】欧州特許出願公開第０２９８３７３号明細
書には，誘導コイルに組み込まれている出湯スリーブが
記載されている。この出湯スリーブには，誘導コイルか
ら出る電磁界に影響を及ぼす成形体が配置されている。
この場合，金属溶湯の流れは，誘導コイルを通る電流に
より遮断及び制御され得る。周囲温度から使用温度近く
への出湯スリーブの所望の加熱は，ここには記載されて
いない。EP-A-0298373 describes a tapping sleeve incorporated in an induction coil. A molded body that influences the electromagnetic field emitted from the induction coil is arranged on the tapping sleeve.
In this case, the flow of molten metal can be interrupted and controlled by the current through the induction coil. The desired heating of the tapping sleeve from ambient temperature to near use temperature is not described here.
【０００６】[0006]
【発明が解決しようとする課題】本発明の課題は，内側
殻体が簡単なやり方で周囲温度から使用温度近くに変え
られ得る，冒頭に挙げたような成形品を提案することで
ある。The object of the present invention is to propose a molding such as the one mentioned at the outset in which the inner shell can be changed in a simple manner from ambient temperature to near use temperature.
【０００７】[0007]
【課題を解決するための手段】本発明によればこの課題
は，冒頭に挙げたような耐火成形品において，殻体のう
ちの少なくとも１つが電磁界において誘導加熱可能であ
ることによつて解決される。それによつて，内側殻体が
ゆつくりかつ均一に使用温度近くに予熱され得るように
することができる。これは亀裂形成の危険を減少させ
る。According to the invention, this problem is solved by the fact that in a refractory molding such as the one mentioned at the beginning, at least one of the shells is capable of induction heating in an electromagnetic field. To be done. This allows the inner shell to be prematurely and uniformly preheated to near the service temperature. This reduces the risk of crack formation.
【０００８】外側殻体が誘導加熱可能である場合は，こ
の外側殻体は熱伝導により熱を内側殻体へ伝達する。内
側殻体自体が誘導加熱可能である場合は，この内側殻体
は直接電磁界において加熱される。その際，外側殻体は
電磁界を遮蔽しない。なぜならばこの外側殼体は非金属
材料から成るからである。外側殻体も内側殻体も誘導加
熱可能であるようにすることもできる。この場合は，前
述の作用が互いに助長し合う。When the outer shell is inductively heatable, the outer shell transfers heat to the inner shell by heat conduction. If the inner shell itself is inductively heatable, it is heated directly in the electromagnetic field. At that time, the outer shell does not shield the electromagnetic field. This is because the outer shell is made of a non-metallic material. Both the outer shell and the inner shell can be inductively heatable. In this case, the above-mentioned actions mutually promote each other.
【０００９】電磁界を制御することにより，所望の予熱
が時間的に制御できる。By controlling the electromagnetic field, the desired preheating can be temporally controlled.
【００１０】電磁界は誘導コイルにより生ぜしめられ，
この誘導コイルに成形品がはめ込まれている。予熱する
ために，成形品内の溶湯の貫流を制御するため誘導コイ
ルがもともと設けられている場合，付加的な誘導コイル
は必要でない（欧州特許出願公開第０２９８３７３号明
細書参照）。The electromagnetic field is generated by the induction coil,
A molded product is fitted in this induction coil. In order to preheat, if an induction coil was originally provided to control the flow through of the melt in the molded part, no additional induction coil is necessary (see EP 0298373).
【００１１】本発明の構成において，外側殻体は既に周
囲温度から電磁界において誘導加熱可能である。従つて
外側殻体は既に周囲温度において誘導コイルの電磁界に
電気的に結合されている。それによつて，周囲温度から
使用温度近くまでの全予熱が誘導加熱により行えること
が保証されている。外側殻体が一層高い温度においては
じめて電磁界に結合する場合，この外側殻体は他の加熱
装置によつて周囲温度からこの温度に変えられなければ
ならない。In the arrangement according to the invention, the outer shell can already be induction-heated in an electromagnetic field from ambient temperature. Therefore, the outer shell is already electrically coupled to the electromagnetic field of the induction coil at ambient temperature. As a result, it is guaranteed that total preheating from ambient temperature to near use temperature can be performed by induction heating. If the outer shell only couples to the electromagnetic field at a higher temperature, it must be changed from ambient temperature to this temperature by another heating device.
【００１２】外側殻体８が，内側殻体を十分に加熱する
ために十分強く加熱され得るように，外側殻体は，本発
明の好ましい構成では，室温又は周囲温度においてフエ
ライト鋼製の殻体の消費電力の２５ないし４０％を吸収
する。The outer shell is, in a preferred construction of the invention, a shell made of ferritic steel at room temperature or ambient temperature, so that the outer shell 8 can be heated strongly enough to heat the inner shell sufficiently. It absorbs 25 to 40% of power consumption.
【００１３】外側殻体は，例えば炭素と結合された酸化
アルミニウム又は炭素繊維又は炭素箔から成る。この外
側殻体は閉じられていてもよく又は間隙を持つ帯から成
ることもでき，例えば巻線として形成され得る。それに
より外側殻体が内側殻体の所望の安定化に至らせかつ所
望のやり方で誘導加熱可能であることが分かつた。The outer shell is made of, for example, carbon oxide-bonded aluminum oxide or carbon fiber or carbon foil. This outer shell may be closed or may consist of a band with gaps, for example formed as a winding. It has been found that the outer shell leads to the desired stabilization of the inner shell and can be induction-heated in the desired manner.
【００１４】本発明の拡張において，内側殻体は少なく
とも４００℃以上の温度から電磁界において誘導加熱可
能である。従つて内側殻体は４００℃以上の温度におい
てはじめて電磁界に結合する。この温度以上において，
内側殻体は，この内側殻体自体が誘導加熱されることに
より使用温度まで加熱される。In an extension of the invention, the inner shell is inductively heatable in an electromagnetic field from temperatures of at least 400 ° C. and above. Therefore, the inner shell is coupled to the electromagnetic field only at a temperature of 400 ° C. or higher. Above this temperature,
The inner shell body is heated to the use temperature by induction heating the inner shell body itself.
【００１５】内側殻体は大体において，例えばＭｇＯ，
ＮａＯ又はＹＯにより安定化され又は部分安定化されて
いる，耐摩耗性酸化ジルコニウムから成るのが好まし
い。The inner shell is generally made of, for example, MgO,
It preferably consists of wear-resistant zirconium oxide, which is stabilized or partially stabilized by NaO or YO.
【００１６】[0016]
【実施例】本発明の別の有利な構成は，従属請求項及び
実施例の以下の説明から明らかになる。Further advantageous configurations of the invention emerge from the subclaims and the following description of the embodiments.
【００１７】冶金容器の底１に穴あきれんが２がはめ込
まれている。この穴あきれんが２に，管状出湯スリーブ
としての耐火成形品３が配置されている。この出湯スリ
ーブは誘導コイル４により包囲されている。A perforated brick 2 is fitted in the bottom 1 of the metallurgical container. On this perforated brick 2, a fire-resistant molded product 3 as a tubular tapping sleeve is arranged. The tapping sleeve is surrounded by the induction coil 4.
【００１８】出湯スリーブ３の流出通路５に成形体６が
配置されている。この成形体は，誘導コイル４から出る
電磁界との共同作用により，流出通路５を通つて流れる
金属溶湯の流れが制御されるようにする。これは，欧州
特許出願公開第０２９８３７３号明細書に詳細に記載さ
れている。A molded body 6 is arranged in the outflow passage 5 of the tapping sleeve 3. This molded body controls the flow of the molten metal flowing through the outflow passage 5 in cooperation with the electromagnetic field emitted from the induction coil 4. This is described in detail in EP-A-0298373.
【００１９】出湯スリーブ３は摩耗部材である。この出
湯スリーブは誘導コイル４と関係なく交換できる。The tapping sleeve 3 is a wear member. This tapping sleeve can be replaced independently of the induction coil 4.
【００２０】出湯スリーブ３はスリーブ状の内側殼体７
を持つている。この内側殻体は，溶湯に対して耐摩耗性
の，耐火セラミツク材料から成る。例えば，管状の内側
殻体７は，ＭｇＯ，ＮａＯ又はＹＯにより安定化され又
は部分安定化されている酸化ジルコニウムから成る。The tapping sleeve 3 is a sleeve-shaped inner shell 7
Have The inner shell is made of a refractory ceramic material that is wear resistant to the molten metal. For example, the tubular inner shell 7 comprises zirconium oxide which is stabilized or partially stabilized by MgO, NaO or YO.
【００２１】管状の内側殻体７は管状の外側殻体８によ
り包囲されている。内側殻体７と外側殻体８が一緒に成
形品３を形成している。この管状外側殻体８は，図１に
よる実施例では，炭素と結合された酸化アルミニウムか
ら成る。外側殻体８は内側殻体７に焼きばめされ又は接
合されている。この外側殻体は熱を良く伝達するように
内側殻体７と結合されている。The tubular inner shell 7 is surrounded by the tubular outer shell 8. The inner shell 7 and the outer shell 8 together form the molded product 3. This tubular outer shell 8 consists of aluminum oxide combined with carbon in the embodiment according to FIG. The outer shell 8 is shrink fitted or joined to the inner shell 7. This outer shell is connected to the inner shell 7 so as to transfer heat well.
【００２２】成形品３の縦軸線はＬで示されている。The vertical axis of the molded product 3 is indicated by L.
【００２３】図２による実施例において，内側殻体７
は，図１において説明されたように構成されている。外
側殻体８は，内側殻体７に螺旋状に巻き付けられている
炭素繊維製帯９により形成されている。帯９の縁の間に
スリツト１０が存在する。しかしこれらの縁は重なり合
わない。帯９を内側殻体７に固定するために，環１１，
１２が設けられている。しかし帯９は内側殻体７の製造
の際にもこの内側殻体に一体形成され得る。In the embodiment according to FIG. 2, the inner shell 7
Are configured as described in FIG. The outer shell 8 is formed of a carbon fiber band 9 that is spirally wound around the inner shell 7. There are slits 10 between the edges of the strip 9. But these edges do not overlap. To fix the band 9 to the inner shell 7, a ring 11,
12 are provided. However, the band 9 can also be integrally formed with the inner shell 7 during the production of the inner shell 7.
【００２４】図３による実施例において，外側殻体８
は，内側殻体７に螺旋状に巻き付けられた炭素繊維製紐
１３から成る。この紐１３の端部は環１１，１２により
内側殻体７に保持され得る。紐１３は内側殻体７の製造
の際にもこの内側殻体に一体形成され得る。In the embodiment according to FIG. 3, the outer shell 8
Is composed of a carbon fiber string 13 which is spirally wound around the inner shell 7. The ends of this string 13 can be held on the inner shell 7 by the rings 11, 12. The string 13 can also be integrally formed with the inner shell 7 when the inner shell 7 is manufactured.
【００２５】上述の実施例において，外側殻体８の材料
は，この外側殻体が既に周囲温度において誘導コイル４
により誘導加熱可能であるように選ばれている。内側殻
体７の材料は約８００℃の温度から誘導コイル４によつ
て誘導加熱可能である。In the embodiment described above, the material of the outer shell 8 is such that the outer shell is already at ambient temperature.
Is selected to be induction heatable. The material of the inner shell 7 can be induction-heated by the induction coil 4 from a temperature of about 800 ° C.
【００２６】動作のやり方はほぼ次の通りである。運転
する前に，即ち，溶湯が流出通路５を通つて流される前
に，即ち成形品３の温度がほぼ周囲温度である場合に，
誘導コイル４が付勢される。それにより，外側殻体８の
誘導加熱が行われる。熱伝導により外側殻体８から内側
殻体７へ温度上昇が移行するので，この内側殼体の温度
は次第にその周囲及び長さにわたつて均一に上昇する。
僅かな耐温度変化性にも拘らず，内側殻体７における亀
裂形成の恐れはない。The operation method is as follows. Before operation, i.e. before the melt is flowed through the outflow passage 5, i.e. when the temperature of the molded article 3 is approximately ambient temperature,
The induction coil 4 is energized. Thereby, induction heating of the outer shell 8 is performed. As the temperature rises from the outer shell 8 to the inner shell 7 due to heat conduction, the temperature of this inner shell gradually rises uniformly over its circumference and length.
Despite a slight temperature change resistance, there is no fear of crack formation in the inner shell 7.
【００２７】内側殻体７も誘導加熱可能である，例えば
８００℃の温度に達すると，付加的に内側殻体７の誘導
加熱が行われる。温度上昇は続く。その後，内側殻体７
が使用温度，即ち，ほぼ溶湯の温度に達する場合は又は
この温度に近づく場合は，誘導コイル４は成形品３をそ
れ以上加熱する必要がない。今や，溶湯の排出が開始さ
れ得る。その際，内側殻体７は，亀裂形成に至らせる熱
衝撃を受けない。The inner shell 7 can also be induction-heated, for example, when the temperature of 800 ° C. is reached, the inner shell 7 is additionally induction-heated. The temperature continues to rise. Then, the inner shell 7
If the temperature reaches the temperature of use, that is, the temperature of the molten metal approaches or approaches this temperature, the induction coil 4 does not need to heat the molded product 3 any more. Now the evacuation of the melt can be started. At that time, the inner shell body 7 is not subjected to thermal shock leading to crack formation.
【００２８】流出する溶湯の流れは，誘導コイル４によ
つて制御され得る。この時間中にも，少なくとも内側殻
体７は誘導加熱により使用温度に保たれる。いかなる場
合にも，外側殻体８は内側殻体７を亀裂形成に対して安
定化する。The flow of molten metal flowing out can be controlled by the induction coil 4. During this time, at least the inner shell 7 is kept at the working temperature by induction heating. In any case, the outer shell 8 stabilizes the inner shell 7 against crack formation.
【００２９】炭素繊維製の帯９及び紐１３は高い引張強
さを持つており，それによつて亀裂形成による内側殻体
７の拡大を防上する。外側殻体８においては，内側殻体
７のひび割れを防止することはあまり重要でない。外側
殻体８，即ち，前製造された管部分（図１参照）又は帯
９（図２参照）又は紐１３（図３参照）が，溶湯が貫流
し得るほどに広く亀裂が開くことを防止することが重要
である。The carbon fiber strip 9 and the cord 13 have a high tensile strength, which prevents the inner shell 7 from expanding due to crack formation. In the outer shell 8, it is not so important to prevent the inner shell 7 from cracking. Prevents the outer shell 8, ie the prefabricated pipe section (see FIG. 1) or strip 9 (see FIG. 2) or string 13 (see FIG. 3), from cracking wide enough to allow the melt to flow through It is important to.
【００３０】上述した実施例において，特に図２及び３
において，有利なのは，外側殻体８の肉厚が小さいこと
である。外側殻体８の肉厚は内側殻体７のそれよりもは
るかに小さい。従つて比較的小さい内径を持つ誘導コイ
ル４が使用され得る。外側殻体８の肉厚がはるかに大き
い場合は，誘導コイル４の内径も相応に大きくなければ
ならない。これは，誘導コイル４及びこの誘導コイルの
制御及びエネルギー需要をかなり増大させる。In the embodiment described above, in particular FIGS.
In, the advantage is that the thickness of the outer shell 8 is small. The thickness of the outer shell 8 is much smaller than that of the inner shell 7. Therefore, an induction coil 4 with a relatively small inner diameter can be used. If the wall thickness of the outer shell 8 is much larger, the inner diameter of the induction coil 4 must also be correspondingly larger. This considerably increases the induction coil 4 and its control and energy demand.
【００３１】上述の実施例では出湯スリーブが説明され
ている。本発明は，金属溶湯容器用の別の出湯兼調整機
構にも使用できる。In the above embodiment, a tapping sleeve has been described. The present invention can also be used for another tapping and adjusting mechanism for a molten metal container.
【図１】冶金容器の誘導コイル内の出湯スリーブとして
の耐火成形品の使用例の概略断面図である。FIG. 1 is a schematic cross-sectional view of a use example of a refractory molded product as a tapping sleeve in an induction coil of a metallurgical container.
【図２】出湯スリーブとしての耐火成形品の別の実施例
の構成図である。FIG. 2 is a configuration diagram of another embodiment of a fire-resistant molded product as a tapping sleeve.
【図３】第３の実施例の構成図である。FIG. 3 is a configuration diagram of a third embodiment.
７ 内側殻体 ８ 外側殻体 7 Inner shell 8 Outer shell
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ハンス・ロートフス ドイツ連邦共和国タウヌスシユタイン・シ ヤイデルタールシユトラーセ36ツエー (72)発明者 ウルリヒ・ヒンツエン ドイツ連邦共和国タウヌスシユタイン・ラ ーンシユトラーセ20 (72)発明者 インゴ・エルストネル ドイツ連邦共和国ヴイースバーデン・ヴア インベルクシユトラーセ25アー ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hans Rothoffs Taunus Shiyu Tyne Schyaiter Schirtraße 36 Twe (72) Inventor Ulrich Hintsen German Taunus Schyutine Lane Schuttrase 20 ( 72) Inventor Ingo Erstoner, Germany Viesbaden-Wehr Inberg Schuttraße 25
Claims (16)
が電磁界において誘導加熱可能であることを特徴とす
る，少なくとも部分的に覆われる少なくとも２つの非金
属殻体を持つ耐火成形品。1. A refractory molding with at least two non-metallic shells which are at least partially covered, characterized in that at least one of the shells (7, 8) is inductively heatable in an electromagnetic field. ..
界において誘導加熱可能であることを特徴とする，請求
項１に記載の成形品。2. Molded product according to claim 1, characterized in that the outer shell (8) is already heatable by induction in an electromagnetic field from ambient temperature.
ライト鋼製の殻体の消費電力の２５ないし４０％を吸収
することを特徴とする，請求項２に記載の成形品。3. Molded article according to claim 2, characterized in that the outer shell (8) absorbs 25 to 40% of the power consumption of the shell made of ferrite steel at ambient temperature.
上の温度から電磁界において誘導加熱可能であることを
特徴とする，請求項１ないし３のうち１つに記載の成形
品。4. Molded product according to claim 1, characterized in that the inner shell (7) is capable of induction heating from a temperature of at least 400 ° C. or above in an electromagnetic field.
０℃の温度において電磁界で誘導加熱可能であることを
特徴とする，請求項４に記載の成形品。5. The inner shell (7) has a temperature of 900 ° C. to 100 ° C.
The molded article according to claim 4, which is capable of induction heating with an electromagnetic field at a temperature of 0 ° C.
徴とする，請求項１ないし５のうち１つに記載の成形
品。6. Molded product according to claim 1, characterized in that the fire-resistant molded product (3) is tubular.
状に前製造されていることを特徴とする，請求項６に記
載の成形品。7. Molded article according to claim 6, characterized in that the inner shell (7) and the outer shell (8) are prefabricated in the form of a tube.
（３）であることを特徴とする，請求項１ないし７のう
ち１つに記載の成形品。8. Molded product according to claim 1, characterized in that it is a tapping sleeve (3) for molten metal.
結合された酸化アルミニウムから成り，内側殻体（７）
が大体において酸化ジルコニウムから成ることを特徴と
する，請求項１ないし８のうち１つに記載の成形品。9. The outer shell (8) consists essentially of aluminum oxide bound to carbon, the inner shell (7)
Molded article according to one of the claims 1 to 8, characterized in that is essentially zirconium oxide.
リツト（１０）を持つていることを特徴とする，請求項
１ないし９のうち１つに記載の成形品。10. Molded article according to claim 1, characterized in that the outer shell (8) has at least one slit (10).
られていることを特徴とする，請求項１０に記載の成形
品。11. Molded article according to claim 10, characterized in that the slit (10) is wound in a spiral.
されていることを特徴とする，請求項１ないし１１のう
ち１つに記載の成形品。12. Molded article according to claim 1, characterized in that the outer shell (8) is formed by a band (9).
成されていることを特徴とする，請求項１ないし１１の
うち１つに記載の成形品。13. Molded article according to claim 1, wherein the outer shell (8) is formed by a string (13).
とを特徴とする，請求項１２又は１３に記載の成形品。14. Molded article according to claim 12 or 13, characterized in that the outer shell (8) consists of carbon fibres.
間に熱伝導結合部が存在することを特徴とする，請求項
１ないし１４のうち１つに記載の成形品。15. Molded article according to claim 1, characterized in that there is a heat-conducting connection between the outer shell (8) and the inner shell (7).
にある電磁出湯兼調整装置用の，炭素と結合された酸化
アルミニウム製の外側殻体（８）と，出湯スリーブ
（３）としての酸化ジルコニウム製殻体（７）とを持
つ，請求項１ないし１５のうち１つに記載の耐火成形品
の使用。16. Outer shell (8) made of carbon-bonded aluminum oxide for an electromagnetic tapping and conditioning device in a metal melt container with an induction coil (4) and oxidation as tapping sleeve (3). Use of the fire-resistant molded article according to one of claims 1 to 15 with a zirconium shell (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4108153A DE4108153A1 (en) | 1991-03-14 | 1991-03-14 | Refractory molded part and its use |
| DE4108153.6 | 1991-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05155676A true JPH05155676A (en) | 1993-06-22 |
Family
ID=6427205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4103425A Pending JPH05155676A (en) | 1991-03-14 | 1992-03-12 | Refractory molded item and its use |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0503237A1 (en) |
| JP (1) | JPH05155676A (en) |
| KR (1) | KR920017747A (en) |
| DE (1) | DE4108153A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006297476A (en) * | 2004-11-24 | 2006-11-02 | Nippon Steel Corp | Nozzle heating device for molten metal injection |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4301330C2 (en) * | 1993-01-20 | 1997-02-13 | Didier Werke Ag | Process by inductive heating for tempering and / or firing a refractory shaped body made of ceramic material |
| DE4428297A1 (en) * | 1994-08-10 | 1996-02-15 | Didier Werke Ag | Refractory nozzle for pouring molten metal from a vessel |
| DE19515230C2 (en) * | 1995-04-28 | 1997-06-19 | Didier Werke Ag | Process for the inductive heating of a refractory molded part and a corresponding molded part |
| DE19540641C2 (en) * | 1995-11-01 | 1999-06-17 | Didier Werke Ag | Method for operating an induction device when non-metallic melts flow out |
| DE19620403C1 (en) * | 1996-05-21 | 1997-09-18 | Didier Werke Ag | Refractory composite body with layers based on same material |
| DE19641169C1 (en) * | 1996-10-08 | 1998-05-28 | Didier Werke Ag | Method and device for the continuous tapping of melts |
| EP0936010A1 (en) * | 1998-02-12 | 1999-08-18 | Didier-Werke Ag | Method and apparatus for pressure casting metals |
| DE19819114C1 (en) | 1998-04-29 | 2000-01-05 | Didier Werke Ag | Fireproof duct with external insulation and method for sealing joints |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2779073A (en) * | 1952-10-27 | 1957-01-29 | Jr Harry B Osborn | Receptacle for molten metal |
| US3295559A (en) * | 1962-09-17 | 1967-01-03 | Union Carbide Corp | Induction heating susceptor and method for producing same |
| FR1525154A (en) * | 1966-03-11 | 1968-05-17 | Improvements to casting nozzles for continuous casting of metal or carbon steel in liquid state | |
| WO1983004364A1 (en) * | 1982-05-28 | 1983-12-08 | Western Electric Company, Inc. | Modified zirconia induction furnace |
| FR2532866B1 (en) * | 1982-09-13 | 1985-06-07 | Pont A Mousson | INDUCTION HEATED CASTING CHANNEL |
| CH665369A5 (en) * | 1984-03-07 | 1988-05-13 | Concast Standard Ag | METHOD FOR CONTROLLING THE FLOW OF A METAL MELT IN CONTINUOUS CASTING, AND A DEVICE FOR IMPLEMENTING THE METHOD. |
| DE3412388C2 (en) * | 1984-04-03 | 1986-10-02 | Didier-Werke Ag, 6200 Wiesbaden | Refractory immersion nozzle |
| FR2609914B1 (en) * | 1987-01-26 | 1990-04-13 | Aubert & Duval Acieries | LIQUID METAL CASTING COMPOSITE NOZZLE, PARTICULARLY FOR METAL ATOMIZING APPARATUS |
| EP0298273A1 (en) * | 1987-07-06 | 1989-01-11 | Westinghouse Electric Corporation | Shaft retaining ring |
| DE3842690C2 (en) * | 1988-12-19 | 1998-04-30 | Didier Werke Ag | Refractory connection and induction coil therefor |
-
1991
- 1991-03-14 DE DE4108153A patent/DE4108153A1/en not_active Withdrawn
-
1992
- 1992-01-18 EP EP92100778A patent/EP0503237A1/en not_active Withdrawn
- 1992-03-07 KR KR1019920003786A patent/KR920017747A/en not_active Withdrawn
- 1992-03-12 JP JP4103425A patent/JPH05155676A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006297476A (en) * | 2004-11-24 | 2006-11-02 | Nippon Steel Corp | Nozzle heating device for molten metal injection |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0503237A1 (en) | 1992-09-16 |
| DE4108153A1 (en) | 1992-09-17 |
| KR920017747A (en) | 1992-10-21 |
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