JP3342583B2 - High frequency heating coil for horizontal continuous casting - Google Patents
High frequency heating coil for horizontal continuous castingInfo
- Publication number
- JP3342583B2 JP3342583B2 JP19158794A JP19158794A JP3342583B2 JP 3342583 B2 JP3342583 B2 JP 3342583B2 JP 19158794 A JP19158794 A JP 19158794A JP 19158794 A JP19158794 A JP 19158794A JP 3342583 B2 JP3342583 B2 JP 3342583B2
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- coil
- frequency heating
- continuous casting
- heating coil
- 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 - Lifetime
Links
Landscapes
- General Induction Heating (AREA)
- Continuous Casting (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は金属たとえば鉄、銅、
鉛、アルミニウム、ニッケル、貴金属等およびこれらの
合金の横型連続鋳造用高周波加熱コイルに関する。This invention relates to metals such as iron, copper,
The present invention relates to a high-frequency heating coil for continuous continuous casting of lead, aluminum, nickel, precious metals, and the like and alloys thereof.
【０００２】[0002]
【従来の技術】連続鋳造用高周波加熱コイルは加熱溶融
されたルツボ内の原料金属の保持に広く利用されている
が、これはエネルギー効率が良く、温度制御が容易で自
動制御し易く、特に公害の心配が少ないという優れた特
徴を有するためである。従来、前記分野に用いられる高
周波加熱コイルはルツボの回りを等間隔で巻かれた円筒
状コイルが一般的であり、ルツボの種類によって使用態
様が異なっている。2. Description of the Related Art A high frequency heating coil for continuous casting is widely used for holding a raw material metal in a heated and melted crucible, but it is energy efficient, easy to control temperature, easy to automatically control, and especially polluting. This is because it has an excellent feature that there is little worry about the problem. 2. Description of the Related Art Conventionally, a high frequency heating coil used in the above field is generally a cylindrical coil wound around a crucible at equal intervals, and its use mode differs depending on the type of the crucible.
【０００３】このような連続鋳造用ルツボには成品の引
出方法により、竪型ルツボと横型ルツボの二つの型があ
り、竪型ルツボの場合は、ルツボ底より成品を引き出す
ため側壁にダイス、冷却ジャケットがなく、従来の高周
波加熱コイルでルツボ全体を囲み均一に加熱保持するこ
とができる。[0003] There are two types of such crucibles for continuous casting, a vertical crucible and a horizontal crucible, depending on the method of drawing out a product. In the case of a vertical crucible, a die is formed on the side wall to draw out the product from the bottom of the crucible and cooling is performed. There is no jacket, and the entire crucible can be surrounded and uniformly heated and held by the conventional high-frequency heating coil.
【０００４】また、横型ルツボの場合は、側壁から水平
方向または斜方向に成品を引き出す方式であり、例え
ば、図３に示すように、従来の横型連続鋳造用高周波加
熱コイルを使用した場合の鋳造装置では、ルツボ１に加
熱溶融された原料金属を入れ、円筒状コイル２により加
熱、保持し給湯口４から冷却ジャケット５に囲まれルツ
ボ側壁下部に当接されたダイス６を通って溶湯３が引き
出され成品７となるようなものが知られている。In the case of a horizontal crucible, a product is drawn out horizontally or obliquely from a side wall. For example, as shown in FIG. 3, casting using a conventional high frequency heating coil for horizontal continuous casting is performed. In the apparatus, the raw metal that has been heated and melted is put into a crucible 1, heated and held by a cylindrical coil 2, and the molten metal 3 is passed through a die 6 surrounded by a hot water supply port 4 and surrounded by a cooling jacket 5 and in contact with a lower portion of the crucible side wall. A product which is drawn out to become a product 7 is known.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記横
型ルツボの場合、図３に示すように円筒状コイル２が、
ダイス６、冷却ジャケット５に邪魔されルツボ下部を囲
むことができないので、給湯口４付近の加熱がルツボ上
部に比べ不十分となり、溶湯３の順調な引き出しが阻害
される。また加熱電力を上げ給湯口４付近を適温にする
と、ルツボ上部の温度が過度に上昇し、鋳造品の品質に
悪影響を及ぼしルツボ１の寿命を短くする等、鋳造上不
利な結果を招くという問題があった。このため、図２に
示すように、ダイス６を境として上方と下方に夫々円筒
状コイル２，２’を設けて、ルツボ１内の均一な加熱保
持を図ったものが開示されている（特開平２−２１０７
８９号公報）。However, in the case of the horizontal crucible, as shown in FIG.
Since the lower part of the crucible cannot be surrounded by the die 6 and the cooling jacket 5, the heating near the hot water supply port 4 becomes insufficient compared with the upper part of the crucible, and the smooth drawing out of the molten metal 3 is hindered. In addition, when the heating power is increased to make the vicinity of the hot water supply port 4 an appropriate temperature, the temperature of the upper portion of the crucible excessively increases, which adversely affects the quality of the cast product and shortens the life of the crucible 1, resulting in disadvantageous results in casting. was there. For this reason, as shown in FIG. 2, there is disclosed an apparatus in which cylindrical coils 2 and 2 ′ are provided above and below a die 6 as a boundary to achieve uniform heating and holding in the crucible 1 (particularly, FIG. 2). Kaihei 2-2107
No. 89).
【０００６】このような技術では確かに温度の均一化を
図ることはできるが、ダイス部分がルツボの側壁の比較
的下側に設けられた形態のものでは、冷却ジャケットが
邪魔して、ダイスの下側部分に上記円筒状コイルを設け
ることができず、均一な加熱保持が図れないという問題
があった。Although such a technique can surely make the temperature uniform, in the case where the die portion is provided relatively below the side wall of the crucible, the cooling jacket hinders the formation of the die. There is a problem that the cylindrical coil cannot be provided in the lower portion, and uniform heating and holding cannot be achieved.
【０００７】本発明は、上記従来の問題点を解決し、ダ
イス部分がルツボ側壁の比較的下方に設けられてもルツ
ボ内に溶融した原料金属を均一かつ効率よく誘電加熱保
持できる、優れた横型連続鋳造用高周波加熱コイルを提
供しようとするものである。The present invention solves the above-mentioned conventional problems and provides an excellent horizontal die which can uniformly and efficiently hold a raw material melted in a crucible by dielectric heating even when a die portion is provided relatively below a crucible side wall. An object is to provide a high-frequency heating coil for continuous casting.
【０００８】[0008]
【課題を解決するための手段】本発明者は、上記従来の
問題点を解決するため種々検討を重ねた結果、実用上好
適な横型連続鋳造用高周波加熱コイルを見出し本発明を
完成させた。すなわち、本発明は、側壁にダイスを備え
た連続鋳造用横型ルツボの高周波加熱コイルであって、
前記ダイスの上方部分には、ルツボを囲む複数回巻きの
円筒状コイルを設け、前記ルツボの底部領域には、ルツ
ボ底面とほぼ水平方向に平巻きコイルを配置した横型連
続鋳造用高周波加熱コイルを要旨とし、また前記円筒状
コイルおよび前記平巻きコイルが同一電源または各コイ
ル別の電源により供給されている横型連続鋳造用高周波
加熱コイルをも要旨とするものである。As a result of various studies to solve the above-mentioned conventional problems, the present inventors have found a practically suitable high-frequency heating coil for horizontal continuous casting, and have completed the present invention. That is, the present invention is a high-frequency heating coil of a horizontal crucible for continuous casting having a die on the side wall,
In the upper part of the die, a plurality of turns of a cylindrical coil surrounding the crucible are provided, and in the bottom region of the crucible, a high frequency heating coil for horizontal continuous casting in which a flat-wound coil is arranged substantially horizontally with the bottom of the crucible is provided. The present invention also provides a high-frequency heating coil for horizontal continuous casting in which the cylindrical coil and the flat-wound coil are supplied by the same power supply or a power supply for each coil.
【０００９】以下、本発明の横型連続鋳造用高周波加熱
コイルについて添付図面により説明する。図１は、本発
明の横型連続鋳造用高周波加熱コイルの一例を示す断面
説明図である。この図に示すように、横型ルツボ１の側
壁下方には、ダイス６が設けられ、それを覆うように冷
却ジャケット５が取り付けられている。ルツボ１内の原
料金属の溶湯３は、ルツボ側壁下方の給湯口４からダイ
ス６を通り、冷却され引き出されて成品７となる。The high-frequency heating coil for horizontal continuous casting of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory sectional view showing an example of the high-frequency heating coil for horizontal continuous casting of the present invention. As shown in this figure, a die 6 is provided below the side wall of the horizontal crucible 1, and a cooling jacket 5 is attached so as to cover the die. The molten metal 3 of the raw material metal in the crucible 1 passes through the hot water supply port 4 below the crucible side wall, passes through the die 6, is cooled and drawn out to be a product 7.
【００１０】ルツボ１に備えられたダイス６を境とし
て、その上下には高周波加熱コイルが設けられており、
上方部分には前記ルツボを囲むように複数回巻きの円筒
状コイル２が設けられ、下方部分、すなわちルツボの底
部領域には、その底面とほぼ水平方向に平巻きコイル１
２が設けられている。この底部領域とは、ルツボ底面に
合致する形状もしくはそれよりやや広い形状の範囲のこ
とを指す。また、この平巻きコイル１２は、左巻きまた
は右巻きの渦巻き形状であり、その外形が円形状，楕円
形状，四角形状等であるが、ルツボの底面の大きさに合
わせて適宜選択して用いればよい。A high-frequency heating coil is provided above and below the die 6 provided on the crucible 1 as a boundary.
The upper portion is provided with a cylindrical coil 2 having a plurality of turns so as to surround the crucible, and the lower portion, ie, the bottom region of the crucible, is provided with a flat coil 1 in a direction substantially horizontal to the bottom surface.
2 are provided. The bottom region refers to a range of a shape conforming to the crucible bottom surface or a slightly wider shape. The flat-wound coil 12 has a left-handed or right-handed spiral shape, and its outer shape is a circular shape, an elliptical shape, a square shape, or the like. Good.
【００１１】上記コイル１２を使用してダイス、冷却ジ
ャケット及びルツボ底部領域に合わせて平巻きコイルを
選定すれば、常にルツボ内の溶融原料金属を均一に加熱
保持することができる。If the coil 12 is used to select a flat-wound coil in accordance with the die, cooling jacket and crucible bottom region, the molten raw metal in the crucible can always be heated and held uniformly.
【００１２】特に、本発明では、ルツボ底部領域に置か
れた平巻きコイル１２が図２に示されるような従来のル
ツボを取り囲む方式ではないため、ルツボを取り囲む余
裕がない場合でも、上記平巻きコイル１２をルツボ底部
領域に設けて加熱保持することができる。In particular, according to the present invention, the flat wound coil 12 placed in the crucible bottom region is not of the conventional type surrounding a crucible as shown in FIG. The coil 12 can be provided in the crucible bottom area and held by heating.
【００１３】本発明に用いられる高周波加熱コイルとし
ては、慣用の各種コイルが用いられるが、特に中空銅パ
イプは冷却水を通すと細い巻線で大電流を流すことがで
き、コイルの小型化を可能にするのでより好ましい。上
方の円筒状コイルと下方の平巻きコイルの連結を同一銅
パイプまたはふくろナット使用による結合方式で行うこ
とにより一つの電源（同一電源）で給電することもでき
る。また、二つ以上の電源を給電してもよく、ルツボ内
の温度を均一に保つことができればよく、同一電源（一
つの電源）または各コイル別の電源（二つの電源）を使
い分けることができる。さらに下部の平巻きコイルは場
合によっては、銅パイプコイルの代わりにリッツ線コイ
ルを使用してもよい。As the high-frequency heating coil used in the present invention, various conventional coils are used. In particular, hollow copper pipes can flow a large current with thin windings when cooling water is passed through, so that the coil can be reduced in size. It is more preferable because it allows. By connecting the upper cylindrical coil and the lower flat wound coil by a coupling method using the same copper pipe or the same nut, power can be supplied by one power supply (the same power supply). In addition, two or more power supplies may be supplied, as long as the temperature in the crucible can be kept uniform, and the same power supply (one power supply) or the power supply for each coil (two power supplies) can be used properly. . Further, the lower flat wound coil may use a litz wire coil instead of a copper pipe coil in some cases.
【００１４】本発明の高周波加熱コイルは大気雰囲気中
に限らず真空を含む保護雰囲気中の鋳造にも有効であ
り、原料金属として鉄、銅、鉛、アルミニウム、ニッケ
ル、貴金属等およびこれらの合金を用いることができ、
特に融点の高い銅合金から低い半田合金まで常に良好な
鋳造結果を得ることができる。The high-frequency heating coil of the present invention is effective not only for casting in an atmosphere but also in a protection atmosphere including a vacuum. Iron, copper, lead, aluminum, nickel, precious metals and the like and alloys thereof are used as raw materials. Can be used,
Particularly, a good casting result can be always obtained from a copper alloy having a high melting point to a solder alloy having a low melting point.
【００１５】[0015]
【作用】ルツボの上方部分に円筒状コイルを設け、ルツ
ボ底部に平巻きコイルを配置することにより、ルツボ全
体を均一な温度設定にでき、ルツボ内の溶融原料金属を
均一に加熱保持することができる。特に、ルツボの側壁
に取り付けられたダイスが比較的下方にある場合に好適
である。By providing a cylindrical coil at the upper part of the crucible and arranging a flat coil at the bottom of the crucible, the entire crucible can be set to a uniform temperature, and the molten raw material metal in the crucible can be heated and held uniformly. it can. In particular, it is suitable when the dice attached to the side wall of the crucible is relatively lower.
【００１６】[0016]
（実施例）図１に示すような横型ルツボ１の上方部分に
中空銅製の円筒状コイル２、ルツボ１の底部領域に中空
銅製平巻きコイル１２を配置した高周波加熱コイルの装
置を用いて、同一電源から通電時電流２５Ａ〜４５Ａを
ＰＩＤ自動温度制御により４時間流し、横型ルツボ内に
溶解した原料金属（純銅）の連続鋳造を行った際に溶湯
温度をルツボ内の溶湯表面と給湯口付近とで測定した結
果、温度差を約２０℃程度に抑えることができた。(Embodiment) Using a high-frequency heating coil device in which a hollow copper cylindrical coil 2 is disposed above a horizontal crucible 1 and a hollow copper flat-wound coil 12 is disposed in the bottom region of the crucible 1 as shown in FIG. When a current of 25 A to 45 A is supplied for 4 hours by PID automatic temperature control from a power source and the continuous casting of the raw material metal (pure copper) dissolved in the horizontal crucible is performed, the temperature of the molten metal is set to the surface of the molten metal in the crucible and the vicinity of the hot water supply port. As a result, the temperature difference could be suppressed to about 20 ° C.
【００１７】（比較例）図３に示すような横型ルツボ１
の上方部分に中空銅製の円筒状コイル２を設けた高周波
加熱コイルの装置を用いて、横型ルツボ内に溶解した原
料金属（純銅）の溶湯温度を実施例１と同様に溶湯表面
と給湯口付近とで測定した結果、温度差が約５０℃と大
き過ぎた。Comparative Example A horizontal crucible 1 as shown in FIG.
The temperature of the molten metal of the raw metal (pure copper) melted in the horizontal crucible was measured using a high-frequency heating coil device provided with a hollow copper cylindrical coil 2 in the upper part of As a result, the temperature difference was about 50 ° C., which was too large.
【００１８】[0018]
【発明の効果】本発明の高周波加熱コイルによれば、ル
ツボ内に溶融した原料金属は均一にかつ効率よく誘導加
熱保持されるため、順調にダイスを通って引き出され良
質の成品が得られる。特に、ルツボ側壁の比較的下方に
給湯口が設けられたものでも、平巻きコイルにより組入
れが容易で、しかも温度の均一化がはかれる。According to the high-frequency heating coil of the present invention, since the raw metal melted in the crucible is uniformly and efficiently held by induction heating, it is smoothly pulled out through the die to obtain a good quality product. In particular, even in the case where the hot water supply port is provided relatively below the crucible side wall, it can be easily incorporated by the flat-wound coil, and the temperature can be made uniform.
【図１】本発明の高周波加熱コイルを使用した金属の連
続鋳造装置の一例の縦断面図である。FIG. 1 is a longitudinal sectional view of an example of a continuous casting apparatus for metal using a high-frequency heating coil of the present invention.
【図２】従来の高周波加熱コイルを使用した金属の連続
鋳造装置の一例の縦断面図である。FIG. 2 is a longitudinal sectional view of an example of a conventional metal continuous casting device using a high-frequency heating coil.
【図３】従来の高周波加熱コイルを使用した金属の連続
鋳造装置の一例の縦断面図である。FIG. 3 is a longitudinal sectional view of an example of a conventional metal continuous casting apparatus using a high-frequency heating coil.
１ 横型ルツボ ２，２’円筒状コイル ３ 溶湯 ４ 給湯口 ５ 冷却ジャケット ６ ダイス ７ 成品 １２ 平巻きコイル。 DESCRIPTION OF SYMBOLS 1 Horizontal crucible 2, 2 'cylindrical coil 3 Melt 4 Hot water supply port 5 Cooling jacket 6 Dice 7 Product 12 Flat wound coil.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−309447（ＪＰ，Ａ) 特開 平４−37442（ＪＰ，Ａ) 特開 平２−210789（ＪＰ，Ａ) 特開 平１−181946（ＪＰ，Ａ) 特開 平２−82489（ＪＰ，Ａ) 特開 平６−114502（ＪＰ，Ａ) 実公 昭40−26246（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/10 310 B22D 11/04 114 H05B 6/36 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-309447 (JP, A) JP-A-4-37442 (JP, A) JP-A-2-210789 (JP, A) JP-A-1- 181946 (JP, A) JP-A-2-82489 (JP, A) JP-A-6-114502 (JP, A) JP-A-40-26246 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) B22D 11/10 310 B22D 11/04 114 H05B 6/36
Claims (2)
ツボの高周波加熱コイルであって、前記ダイスより上方
部分には、ルツボを囲む複数回巻きの円筒状コイルを設
け、前記ルツボの底部領域には、ルツボ底面とほぼ水平
方向に平巻きコイルを配置したことを特徴とする横型連
続鋳造用高周波加熱コイル。1. A high-frequency heating coil for a continuous casting horizontal crucible having a die on a side wall, wherein a plurality of turns of a cylindrical coil surrounding the crucible are provided above the die, and a bottom region of the crucible is provided. A flat-type coil for horizontal continuous casting, wherein a flat-wound coil is disposed substantially horizontally with the bottom of the crucible.
ルが同一電源または各コイル別の電源により供給されて
いる請求項１に記載の横型連続鋳造用高周波加熱コイ
ル。2. The high-frequency heating coil for horizontal continuous casting according to claim 1, wherein the cylindrical coil and the flat-wound coil are supplied by the same power supply or a power supply for each coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19158794A JP3342583B2 (en) | 1994-08-15 | 1994-08-15 | High frequency heating coil for horizontal continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19158794A JP3342583B2 (en) | 1994-08-15 | 1994-08-15 | High frequency heating coil for horizontal continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0852546A JPH0852546A (en) | 1996-02-27 |
| JP3342583B2 true JP3342583B2 (en) | 2002-11-11 |
Family
ID=16277130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19158794A Expired - Lifetime JP3342583B2 (en) | 1994-08-15 | 1994-08-15 | High frequency heating coil for horizontal continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3342583B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100248A (en) * | 2006-10-18 | 2008-05-01 | Nippon Steel Corp | Continuously casting tundish, and method of continuous casting |
-
1994
- 1994-08-15 JP JP19158794A patent/JP3342583B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0852546A (en) | 1996-02-27 |
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