JPS585742B2 - You can't get enough of this. - Google Patents
You can't get enough of this.Info
- Publication number
- JPS585742B2 JPS585742B2 JP8145374A JP8145374A JPS585742B2 JP S585742 B2 JPS585742 B2 JP S585742B2 JP 8145374 A JP8145374 A JP 8145374A JP 8145374 A JP8145374 A JP 8145374A JP S585742 B2 JPS585742 B2 JP S585742B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- molten metal
- heating device
- induction heating
- bottom plate
- 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.)
- Expired
Links
- 239000002184 metal Substances 0.000 claims description 41
- 229910052751 metal Inorganic materials 0.000 claims description 41
- 230000006698 induction Effects 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 29
- 230000004907 flux Effects 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000007654 immersion Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 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
- 238000005266 casting Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【発明の詳細な説明】
この発明は溶融金属排出ノズルの保温用誘導加熱装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an induction heating device for keeping a molten metal discharge nozzle warm.
一般に溶融金属排出用ノズルは溶融金属容器底部に装着
し、上記容器内の溶融金属を排出させるものである。Generally, a molten metal discharge nozzle is attached to the bottom of a molten metal container to discharge the molten metal inside the container.
しかし、上記ノズルは外気と接触して冷却されるため、
そのノズル孔内に溶融金属が流通するとき、溶融金属が
冷却され鋼の品質を低下したり、ときには冷却した溶融
金属中の非金属介在物等がノズル孔に付着してノズル閉
塞を起こす原因ともなる。However, since the above nozzle is cooled by contact with the outside air,
When the molten metal flows through the nozzle hole, the molten metal is cooled, reducing the quality of the steel, and sometimes non-metallic inclusions in the cooled molten metal adhere to the nozzle hole, causing nozzle blockage. Become.
このようなことから、ノズル自体の材質を改良したり、
種々その防止策がとられているが、その一つとして最近
、タンデイシュノズルの外気と接触する部分に誘導加熱
装置を嵌装したものが考案された。For this reason, we have improved the material of the nozzle itself,
Various measures have been taken to prevent this, and one recently devised is one in which an induction heating device is fitted to the part of the tundish nozzle that comes into contact with the outside air.
すなわち、これはタンデイシュノズルから溶融金属が流
出する際、誘導加熱装置の誘導コイルによって発生する
磁束を導電性材料である溶融金属に通過させて、その通
過に伴なう発熱作用により溶融金属を加熱し、とくにノ
ズル孔周面の溶融金属を加熱してノズル孔周挙に溶融金
属が冷却して溶融金属中の非金属介在物が付着するのを
防止するものである。In other words, when the molten metal flows out from the tundish nozzle, the magnetic flux generated by the induction coil of the induction heating device is passed through the molten metal, which is a conductive material, and the molten metal is heated by the heat generated by the passage. In particular, the molten metal around the nozzle hole is heated, and the molten metal is cooled around the nozzle hole to prevent non-metallic inclusions in the molten metal from adhering.
しかし、上記のように３れば、ノズル孔内の１溶融金属
は加熱されるが同時にタンデイシュノズルを装着するタ
ンデイシュ底部面板にも同様に導電性材料の鉄板である
から、誘導コイルからの磁束によって加熱されるため、
タンデイシュ底部の底面板が加熱軟化して極端な場合は
溶損するという問題があった。However, if 3 is used as described above, the 1 molten metal in the nozzle hole is heated, but at the same time, the bottom face plate of the tundish to which the tundish nozzle is attached is also made of an iron plate of conductive material, so the molten metal from the induction coil is heated. Because it is heated by magnetic flux,
There was a problem in that the bottom plate at the bottom of the tundish was heated and softened, and in extreme cases, it was eroded.
これに対しタンデイシュ底部の底面板の加熱を防ぐため
に、上記誘導加熱装置をタンデイシュの底部からはなし
てタンデイシュノズルに設けることが考えられるがこの
場合上記誘導加熱装置を設けないタンデイシュノズルの
部分におけるノズル孔内の溶融金属はほとんど加熱され
ないためこの部分は前述したのと同様冷却されて溶融金
属中の非金属介在物等が付着されやゴ《なるという問題
が生しる。On the other hand, in order to prevent heating of the bottom plate at the bottom of the tundish, it is possible to remove the induction heating device from the bottom of the tundish and install it in the tundish nozzle, but in this case, the tundish nozzle without the induction heating device Since the molten metal in the nozzle hole in this part is hardly heated, this part is cooled in the same manner as described above, and non-metallic inclusions in the molten metal adhere to it, causing the problem that it becomes gore.
この発明は上記問題にかんがろなされたもので、取鍋又
はタンデイシュ等の溶融金属容器の底部の底面板を加熱
することなく、ノズル全体に流通する溶融金属を加熱、
および保温し、もってノズル孔の閉塞を防止し、鋼品質
を向上できる溶融金属排出用ノズルの保温用誘導加熱装
置を提供しようとするものである。This invention was made in consideration of the above problem, and it heats the molten metal flowing throughout the nozzle without heating the bottom plate at the bottom of the molten metal container such as a ladle or tundish.
Another object of the present invention is to provide an induction heating device for keeping a molten metal discharge nozzle warm, thereby preventing clogging of the nozzle hole and improving steel quality.
以下、この発明の一実施例を図にもとづいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
図において、１はタンデイシュで、このタンデイシュ１
の底部に鉄製の底面板２を設けている。In the figure, 1 is a tundish, and this tundish 1
An iron bottom plate 2 is provided at the bottom.
このタンデイシュ１にノズル孔３を有する浸漬ノズル４
はモールド５内の溶融金属６に浸漬している。An immersion nozzle 4 having a nozzle hole 3 in this tundish 1
is immersed in molten metal 6 in mold 5.
そして、上記浸漬ノズル４に、誘導加熱装置７を上記底
面板２から所定の間隔をおいて嵌装している。An induction heating device 7 is fitted into the immersion nozzle 4 at a predetermined distance from the bottom plate 2.
誘導加熱装置７は、円柱状の中空部を有１る断熱性の筒
状体７１の内部に、中心部に水が流通して冷却される誘
導コイル７２を巻装して形成している。The induction heating device 7 is formed by winding an induction coil 72, which is cooled by water flowing through the center, around the inside of an insulating cylindrical body 71 having a cylindrical hollow part.
一方、上記タンデイシュ１の底面板２と誘導加熱装置７
との間の外界と接触する浸漬ノズル部４ａに、第２図に
示すような円柱状の鉄製リング８を上記底面板２と接触
させずに嵌装している。On the other hand, the bottom plate 2 of the tundish 1 and the induction heating device 7
A cylindrical iron ring 8 as shown in FIG. 2 is fitted into the submerged nozzle portion 4a which contacts the outside world between the two without making contact with the bottom plate 2.
なお、リング８の外周には２重の断熱材９ａ＋９ｂで包
囲している。Note that the outer periphery of the ring 8 is surrounded by double heat insulating materials 9a+9b.
このような構成によれば、いまタンデイシュ１内の溶融
金属を浸漬ノズル４のノズル孔３を流通してモールド５
内に鋳込むとき上記浸漬ノズル４に嵌装した誘導加熱装
置７に通電すれば、誘導コイル７２に電流が流れ、その
誘導コイル７２から磁束が発生し、この磁束が図中点線
で示すように誘導コイル７２の一端側からその他端側を
通り、さらにノズル孔３を流通１る溶融金属を貫通して
閉磁路を形成づる。According to such a configuration, the molten metal in the tundish 1 is passed through the nozzle hole 3 of the immersion nozzle 4 and is poured into the mold 5.
When the induction heating device 7 fitted in the immersion nozzle 4 is energized when casting into the immersion nozzle 4, a current flows through the induction coil 72, and a magnetic flux is generated from the induction coil 72. It passes from one end of the induction coil 72 to the other end, and further passes through the molten metal flowing through the nozzle hole 3 to form a closed magnetic path.
そうすると、溶融金属に貫通する磁束によってうず電流
が発生し、そのうず電流によるジュール熱によって溶融
金属が加熱される。Then, an eddy current is generated by the magnetic flux penetrating the molten metal, and the molten metal is heated by Joule heat caused by the eddy current.
このため浸漬ノズル４のノズル孔３周面における溶融金
属も加熱されるから、ノズル孔３内面に溶融金属が冷却
して溶融金属中の非金属介在物等が附着するのを防止で
きる。Therefore, the molten metal on the circumferential surface of the nozzle hole 3 of the immersion nozzle 4 is also heated, so that it is possible to prevent the molten metal from cooling and nonmetallic inclusions in the molten metal from adhering to the inner surface of the nozzle hole 3.
一方上記誘導加熱装置７から発生した磁束は流通する溶
融金属のみならずその装置７の周囲にも影響を及ぼす。On the other hand, the magnetic flux generated from the induction heating device 7 affects not only the flowing molten metal but also the surroundings of the device 7.
すなわち、タンデイシュ１の底面板２と上記装置７間の
浸漬ノズル外周部４ａに嵌装した鉄製リング８に誘導コ
イル７２から発生した磁束が貫通し、上述した原理から
リング８が磁束によって加熱される。That is, the magnetic flux generated from the induction coil 72 penetrates the iron ring 8 fitted on the outer peripheral part 4a of the submerged nozzle between the bottom plate 2 of the tundish 1 and the device 7, and the ring 8 is heated by the magnetic flux based on the above-mentioned principle. .
そして，リング８の熱がこのリング８と接触する浸漬ノ
ズル部４ａに伝達してこれを加熱する。Then, the heat of the ring 8 is transferred to the submerged nozzle portion 4a in contact with the ring 8, thereby heating it.
したがって、上記リング８に接触する浸漬ノズル部４ａ
は保温されるため、この部分のノズル孔３に溶融金属中
の非金属介在物が冷却して付着するのを防止できる。Therefore, the submerged nozzle portion 4a that contacts the ring 8
Since this area is kept warm, it is possible to prevent non-metallic inclusions in the molten metal from cooling and adhering to the nozzle hole 3 in this area.
また、上記リングはタンデイシュ１の導電性の底面板２
に対して誘導加熱装置７から発生する磁束が及ぼすのを
６目止ブる緩衝体の役目を果す、つまりこの装置７かも
発生した磁束は、リング８の介在によって、その距離が
離れ、上記導電性の底面板２にそれほど高出力な磁束が
貫通しないため、上記底面板２は高温度に加熱されず、
これが溶融破損するのを防止できる。In addition, the above ring is the conductive bottom plate 2 of the tundish 1.
The ring 8 acts as a buffer to stop the magnetic flux generated from the induction heating device 7 from exerting its influence on the ring 8. In other words, the magnetic flux generated by the induction heating device 7 is separated by the ring 8, and the conductive Since the magnetic flux with such high output does not penetrate through the bottom plate 2, the bottom plate 2 is not heated to a high temperature.
This can prevent melting and damage.
なお、ノズルに誘導加熱装置を嵌装する位置の選定にあ
たっては、その装置から発生する磁束出力によって適宜
選定し、その磁束が溶融金属容器の底部に設けた導電性
の底面板２を高温度に加熱しない程度にその底面板から
はなして設ければよい。In selecting the position to fit the induction heating device into the nozzle, select the position appropriately depending on the magnetic flux output generated from the device, and the magnetic flux will heat the conductive bottom plate 2 provided at the bottom of the molten metal container to a high temperature. It may be provided separately from the bottom plate to the extent that it does not heat up.
また、溶融金属容器の底面板と誘導加熱装置との間のノ
ズル部に嵌装する導電性のリングは鉄に限定されず、か
つその形状は第２図に示１円柱状の他高周波誘導加熱の
特性を考慮して、例えば第８図のように下部を波形に切
欠した円柱状のものや、第４図のように分割した円柱状
のものでもよい。Furthermore, the conductive ring fitted in the nozzle between the bottom plate of the molten metal container and the induction heating device is not limited to iron, and its shape is shown in Fig. 2. In consideration of the characteristics, the cylinder may have a cylindrical shape with a wave-shaped cutout at the bottom as shown in FIG. 8, or a cylinder with a divided cylindrical shape as shown in FIG. 4, for example.
ノズルとしては浸漬ノズルに限定されず通常のノズルに
も適用でき、その材質は通常のノズル材料たとえば高ケ
イ酸質、ジルコニア質またはアルミナー黒鉛質等のもの
を用いればよい。The nozzle is not limited to an immersion nozzle, but can also be applied to a normal nozzle, and its material may be a normal nozzle material such as high silicic acid, zirconia, or alumina graphite.
誘導加熱装置の構造も上記実施例に限定されないことは
勿論である。Of course, the structure of the induction heating device is not limited to the above embodiment.
また、上記タンデイシュの底面板２の加熱部分２ａに水
冷函を設けてもよい。Further, a water cooling box may be provided in the heated portion 2a of the bottom plate 2 of the tundish.
更に、必要に応じてモールド上面に近接した位置４ｂ、
すなわち誘導加熱装置下方の浸漬ノズルに前述の如き導
電性のリングを嵌装してもよい。Furthermore, if necessary, a position 4b close to the upper surface of the mold,
That is, a conductive ring as described above may be fitted into the submerged nozzle below the induction heating device.
以上詳述したように、この発明は溶融金属容器の底部に
装着したノズルに、誘導コイルを巻装した誘導加熱装置
を上記容器底部の底面板から所定間隔をおいて嵌装する
とともに、その所定間隔間のノズル部に導電性のリング
を上記底面板と接触させずに嵌装し、もって上記誘導加
熱装置からの磁束により溶融金属容器の底面板を加熱す
ることなく、ノズル内を流通する溶融金属を加熱、保温
して溶融金属の冷却を防止することによって、溶融金属
中の非金属介在物等によるノズル孔の閉塞を防止でき、
かつ鋼品質を向上できる溶融金属排出用ノズルの保温用
誘導加熱装置を提供できるものである。As described in detail above, the present invention includes fitting an induction heating device having an induction coil wound around a nozzle attached to the bottom of a molten metal container at a predetermined distance from the bottom plate at the bottom of the container, and A conductive ring is fitted into the nozzle part between the gaps without contacting the bottom plate, so that the magnetic flux from the induction heating device can prevent the molten metal flowing through the nozzle without heating the bottom plate of the molten metal container. By heating the metal and keeping it warm to prevent the molten metal from cooling, it is possible to prevent the nozzle hole from clogging due to non-metallic inclusions in the molten metal.
Moreover, it is possible to provide an induction heating device for keeping a molten metal discharge nozzle warm, which can improve the quality of steel.
第１図はこの発明の一実施例を示す浸漬ノズル保温用誘
導加熱装置を示す断面図、第２図は第１図の鉄製のリン
グの斜視図、第３図、第４図は他の実施例を示す斜視図
である。
１・・・・・・タンデイシュ、２・・・・・・底面板、
４・・・・・・浸漬ノズル、４ａ・・・・・・浸漬ノズ
ル部、７・・・・・・誘導加熱装置、７２・・・・・・
誘導コイル、８・・・・・・鉄製のリング。Fig. 1 is a sectional view showing an induction heating device for keeping a submerged nozzle warm according to an embodiment of the present invention, Fig. 2 is a perspective view of the iron ring shown in Fig. 1, and Figs. 3 and 4 are other embodiments. It is a perspective view showing an example. 1...Tandish, 2...Bottom plate,
4... Immersed nozzle, 4a... Immersed nozzle part, 7... Induction heating device, 72...
Induction coil, 8... Iron ring.
Claims (1)
ルを巻装した誘導加熱装置を嵌装するにあたり、この装
置を上記容器底部の底面板から所定間隔をおいて嵌装す
るとともに、その所定間隔間のノズル外周部に導電性の
リングを嵌装したことを特徴とする溶融金属排出用ノズ
ルの保温用誘導加熱装置。1. When fitting an induction heating device with an induction coil wound around the nozzle attached to the bottom of the molten metal container, the device should be fitted at a predetermined distance from the bottom plate at the bottom of the container, and at the same time An induction heating device for keeping a molten metal discharge nozzle warm, characterized in that a conductive ring is fitted on the outer periphery of the nozzle between the nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8145374A JPS585742B2 (en) | 1974-07-16 | 1974-07-16 | You can't get enough of this. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8145374A JPS585742B2 (en) | 1974-07-16 | 1974-07-16 | You can't get enough of this. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5110129A JPS5110129A (en) | 1976-01-27 |
| JPS585742B2 true JPS585742B2 (en) | 1983-02-01 |
Family
ID=13746812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8145374A Expired JPS585742B2 (en) | 1974-07-16 | 1974-07-16 | You can't get enough of this. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585742B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6440672U (en) * | 1987-09-04 | 1989-03-10 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5718044Y2 (en) * | 1977-08-15 | 1982-04-15 | ||
| JPS55114459A (en) * | 1979-02-28 | 1980-09-03 | Toshiba Corp | Pouring device |
| JPS57212063A (en) * | 1981-06-23 | 1982-12-27 | Dainippon Screen Mfg Co Ltd | Pitting device for impression cylinder to printing plate cylinder |
-
1974
- 1974-07-16 JP JP8145374A patent/JPS585742B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6440672U (en) * | 1987-09-04 | 1989-03-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5110129A (en) | 1976-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS585742B2 (en) | You can't get enough of this. | |
| JPS6339343B2 (en) | ||
| GB1258609A (en) | ||
| SE7409453L (en) | CONTACTLESS INDUCTION SENSOR FOR DETECTION OF THE PHASE BORDER BETWEEN TWO MEDIA. | |
| US4188010A (en) | Casting risers | |
| JPH0172948U (en) | ||
| JPS5921454A (en) | Tundish for continuous casting | |
| JPS626737A (en) | Continuous casting mold for steel | |
| JPS6316855A (en) | Weir of molten metal container with molten metal outlet | |
| JPH073277Y2 (en) | Molten metal pouring nozzle device | |
| US1051787A (en) | Ingot-mold. | |
| JPS5931415B2 (en) | Hollow tube manufacturing method and device | |
| SU87420A2 (en) | Method of making permanent magnets | |
| JPS55161555A (en) | Continuous casting method | |
| JPS55161554A (en) | Continuous casting equipment | |
| JPH0137807Y2 (en) | ||
| JPS63278665A (en) | Container for molten metal making nozzle heated | |
| JPS6433361U (en) | ||
| JPH028588Y2 (en) | ||
| JPS5548462A (en) | Device for continuous and semicontinuous casting of metal | |
| KR20130046742A (en) | Fastening device of shroud nozzle | |
| JPH0678865B2 (en) | Crucible induction furnace | |
| JPS5954145U (en) | Constant temperature casting tandate | |
| JPS61162349U (en) | ||
| JPS6333158A (en) | Continuous casting method |