JP2898645B2 - High frequency heating coil for horizontal continuous casting - Google Patents
High frequency heating coil for horizontal continuous castingInfo
- Publication number
- JP2898645B2 JP2898645B2 JP1029466A JP2946689A JP2898645B2 JP 2898645 B2 JP2898645 B2 JP 2898645B2 JP 1029466 A JP1029466 A JP 1029466A JP 2946689 A JP2946689 A JP 2946689A JP 2898645 B2 JP2898645 B2 JP 2898645B2
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- frequency heating
- heating coil
- coil
- continuous casting
- 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
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、金属、特に非鉄金属、たとえば、銅、鉛、
アルミニウム、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。DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to metals, especially non-ferrous metals such as copper, lead,
The present invention relates to a high-frequency heating coil for horizontal continuous casting of aluminum, precious metal, etc. and alloys thereof.
［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、特に公害が少ないという優れた特徴を有するからで
ある。従来、前記分野に用いられる高周波加熱コイル
は、等間隔巻線の円筒状コイルが一般的であった。[Prior art] High frequency heating coils for continuous casting are widely used for holding raw material metals in a crucible heated and melted, but they are energy efficient, easy to control temperature and easy to control automatically. This is because it has an excellent feature of low pollution. Conventionally, a high-frequency heating coil used in the above-mentioned field has generally been a cylindrical coil having equally spaced windings.
［発明が解決しようとする問題点］ 連続鋳造用ルツボには製品の引出方法により二つの型
があり、竪型ルツボの場合は、ルツボ底より製品を引き
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するこ
とができる。しかし横型ルツボの場合は、側壁より水平
方向に製品を引き出すため、ダイス、冷却ジャケットが
邪魔になり、加熱コイルはルツボ下部まで囲むことがで
きず、加熱が不十分になり易い。[Problems to be Solved by the Invention] There are two types of crucibles for continuous casting depending on the method of drawing out products. In the case of a vertical crucible, there are no dies and cooling jackets on the side walls to pull out the product from the crucible bottom. The entire crucible can be surrounded and uniformly heated by a conventional high-frequency heating coil. However, in the case of a horizontal crucible, since the product is drawn out from the side wall in the horizontal direction, the die and the cooling jacket are in the way, and the heating coil cannot be surrounded to the lower part of the crucible, and the heating tends to be insufficient.
たとえば第２図に示すように、従来の横型連続鋳造用
高周波加熱コイル（以下単にコイルという）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、均一巻線間隔d1の円筒状コイル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
出され製品７となる。For example, as shown in FIG. 2, in a casting apparatus using a conventional high-frequency heating coil for horizontal continuous casting (hereinafter simply referred to as a coil), a raw metal melted by heating and melting is placed in a crucible 1 and a uniform winding interval d The molten metal 3 is drawn out from the hot water supply port 4 through the die 6 surrounded by the cooling jacket 5 and abutted on the lower part of the crucible side wall.
しかしながら、コイル２は、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。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点
に問題があった。However, the coil 2 cannot be surrounded by the lower part of the crucible because it is obstructed by the die 6 and the cooling jacket 5.
Heating near the hot water inlet 4 becomes insufficient compared to the upper part of the crucible,
The smooth withdrawal of the molten metal 3 is hindered. If the heating power is increased and the temperature of the vicinity of the hot water supply port 4 is set to an appropriate temperature, the temperature at the upper part of the crucible excessively rises, which adversely affects the quality of the cast product and shortens the life of the crucible 1, resulting in disadvantageous results on casting. Had a problem.
また、非鉄金属を溶融する場合には、鉄系金属では、
磁性を受ける金属であるので、直接誘導されてルツボ内
で加熱されるが、非鉄金属の場合には、金属そのものが
誘導を受けにくいため、均一な加熱保持が困難であっ
た。Also, when melting non-ferrous metals, in the case of ferrous metals,
Since it is a metal which receives magnetism, it is directly induced and heated in a crucible. However, in the case of a non-ferrous metal, since the metal itself is hard to receive induction, uniform heating and holding was difficult.
［問題点を解決するための手段］ 本発明者は、上記問題点を解決するため種々検討を重
ねた結果、溶融原料金属、特に非鉄金属を均一に加熱保
持することができる優れた高周波加熱コイルを開発し
た。[Means for Solving the Problems] The present inventor has conducted various studies to solve the above problems, and as a result, an excellent high-frequency heating coil capable of uniformly heating and holding a molten raw material metal, particularly a non-ferrous metal. Was developed.
すなわち、本発明は、ルツボを囲む複数回巻きの円筒
状高周波加熱コイルにおいて、巻線間隔をルツボのダイ
ス側の側壁から対向する側壁に向かって拡げ、巻線が前
記対向する側壁でルツボの上部から下部まで拡がり、ル
ツボを囲んでなる横型連続鋳造用高周波加熱コイルであ
り、また前記横型連続鋳造用高周波加熱コイルが、ルツ
ボのダイス側のコイルの巻線間隔をd2とし、対向する側
壁側の間隔を上よりd3〜d5としたとき、d3＞d4＞d5であ
ることが好ましい。That is, in the present invention, in a multi-turn cylindrical high-frequency heating coil surrounding a crucible, a winding interval is increased from a die-side side wall of the crucible to an opposing side wall, and a winding is formed on the upper side of the crucible at the opposing side wall. spread from to bottom, a horizontal continuous casting high-frequency heating coil comprising surrounding the crucible, also the horizontal continuous casting high-frequency heating coil, the winding interval of the crucible die side of the coil and d 2, opposite side wall interval when the d 3 to d 5 from top of, it is preferable that d 3> d 4> d 5 .
上記コイルを使用すれば、ルツボの構造にあわせて巻
線の間隔を選択することにより、常にルツボ内の溶融原
料金属、特に非鉄金属を均一に加熱保持することができ
る。By using the above-mentioned coil, by selecting the interval between the windings according to the structure of the crucible, the molten raw material metal, particularly the non-ferrous metal, in the crucible can always be uniformly heated and held.
以下、図面によって本発明を説明する。 Hereinafter, the present invention will be described with reference to the drawings.
第１図は、本発明の一実施態様で、ルツボのダイス側
の側壁に位置するコイル２の巻線間隔をd2とし、その側
壁から対向する側壁側の間隔を上よりd3〜d5としたと
き、d3＞d4＞d5であれば、コイル巻線はルツボ１のダイ
ス６側の側壁から対向する側壁側を上部から下部まで囲
み、加熱効果が充分に及び、ルツボの上、下部における
溶湯の温度差を小さくすることができた。Figure 1, in one embodiment of the present invention, the winding interval of the coil 2 located on the side wall of the die side of the crucible and d 2, d 3 to d 5 from above the spacing of the side wall side to an opposing side wall thereof If d 3 > d 4 > d 5 , the coil winding surrounds the opposing side wall from the die 6 side wall of the crucible 1 from the upper part to the lower part, and the heating effect is sufficiently extended, and Thus, the temperature difference of the molten metal in the lower portion could be reduced.
第２図の従来のコイルを使用して空ルツボを加熱した
場合、上部が赤熱しても下部は黒色であったが、第１図
の場合は下部まで赤熱したことにより、本発明の効果を
確認することができた。When an empty crucible was heated using the conventional coil shown in FIG. 2, the lower part was black even if the upper part glowed red. However, in the case of FIG. I was able to confirm.
また、コイルとして中空銅パイプを使用し冷却水を通
すと、細い巻線で大電流を流すことができるのでコイル
が小型化する。When a hollow copper pipe is used as a coil and cooling water is passed through the coil, a large current can be passed through a thin winding, so that the coil is reduced in size.
さらに、本発明のコイルは、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
好な鋳造結果を得た。Furthermore, the coil of the present invention is not limited to the atmosphere,
It is also effective for casting in a protective atmosphere including a vacuum, and has always obtained good casting results from copper alloys with a high melting point to low-temperature solder alloys as raw material metals.
［発明の効果］ 本発明により、ルツボ内の溶融した原料金属、特に非
鉄金属は、均一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製品が得られ
る。[Effects of the Invention] According to the present invention, a molten raw material metal, particularly a non-ferrous metal, in a crucible is uniformly and efficiently maintained by induction heating.
The product is pulled out smoothly through the dice to obtain a good quality product.
第１図（ａ）は本発明の高周波加熱コイルを使用した金
属鋳造装置の縦断面説明図を、（ｂ）は第１図（ａ）の
ルツボとコイルにおけるダイス側からの正面図を、第２
図は従来の高周波加熱コイルを使用した金属鋳造装置の
縦断面説明図を示す。 １……ルツボ、２……高周波加熱コイル、 ３……溶湯、４……給湯口、 ５……冷却ジャケット、６……ダイス、 ７……製品。FIG. 1 (a) is an explanatory longitudinal sectional view of a metal casting apparatus using the high-frequency heating coil of the present invention, and FIG. 1 (b) is a front view of the crucible and coil of FIG. 1 (a) from the die side. 2
The figure shows a longitudinal section explanatory view of a metal casting apparatus using a conventional high-frequency heating coil. 1 ... crucible, 2 ... high frequency heating coil, 3 ... molten metal, 4 ... hot water supply port, 5 ... cooling jacket, 6 ... die, 7 ... product.
Claims (2)
熱コイルにおいて、巻線間隔をルツボのダイス側の側壁
から対向する側壁に向かって拡げ、巻線が前記対向する
側壁でルツボの上部から下部まで拡がり、ルツボを囲ん
でなることを特徴とする横型連続鋳造用高周波加熱コイ
ル。In a cylindrical high-frequency heating coil having a plurality of turns surrounding a crucible, a winding interval is increased from a die-side wall of the crucible to an opposing side wall, and a winding is formed on the opposing side wall from above the crucible. A high frequency heating coil for horizontal continuous casting characterized by extending to the bottom and surrounding a crucible.
とし、対向する側壁側の巻線間隔を上よりd3〜d5とした
とき、d3＞d4＞d5である請求項１記載の横型連続鋳造用
高周波加熱コイル。2. The winding interval of the coil on the die side of the crucible is d 2
And then, when the d 3 to d 5 from above the winding spacing of the side wall side facing, d 3> d 4> d 5 in which claim 1 horizontal continuous casting high-frequency heating coil according.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1029466A JP2898645B2 (en) | 1989-02-08 | 1989-02-08 | High frequency heating coil for horizontal continuous casting |
| JP29649398A JPH11204247A (en) | 1989-02-08 | 1998-10-19 | High-frequency heating coil for horizontal continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1029466A JP2898645B2 (en) | 1989-02-08 | 1989-02-08 | High frequency heating coil for horizontal continuous casting |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29649398A Division JPH11204247A (en) | 1989-02-08 | 1998-10-19 | High-frequency heating coil for horizontal continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02210789A JPH02210789A (en) | 1990-08-22 |
| JP2898645B2 true JP2898645B2 (en) | 1999-06-02 |
Family
ID=12276879
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1029466A Expired - Lifetime JP2898645B2 (en) | 1989-02-08 | 1989-02-08 | High frequency heating coil for horizontal continuous casting |
| JP29649398A Pending JPH11204247A (en) | 1989-02-08 | 1998-10-19 | High-frequency heating coil for horizontal continuous casting |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29649398A Pending JPH11204247A (en) | 1989-02-08 | 1998-10-19 | High-frequency heating coil for horizontal continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (2) | JP2898645B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008582A (en) * | 2012-12-18 | 2013-04-03 | 广东工业大学 | Continuous casting device and method for copper pipe with straight fins at inner wall |
| JP6286317B2 (en) * | 2014-08-05 | 2018-02-28 | 高周波熱錬株式会社 | Heating coil |
| CN113369826A (en) * | 2021-06-30 | 2021-09-10 | 福建紫金铜业有限公司 | Production process of copper pipe for pier mouth |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4857231A (en) * | 1971-11-18 | 1973-08-11 | ||
| JPH0622957Y2 (en) * | 1986-01-21 | 1994-06-15 | 川崎重工業株式会社 | Tandishyu heat retention device |
-
1989
- 1989-02-08 JP JP1029466A patent/JP2898645B2/en not_active Expired - Lifetime
-
1998
- 1998-10-19 JP JP29649398A patent/JPH11204247A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11204247A (en) | 1999-07-30 |
| JPH02210789A (en) | 1990-08-22 |
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