JP3396312B2 - Metal melting / floating equipment - Google Patents
Metal melting / floating equipmentInfo
- Publication number
- JP3396312B2 JP3396312B2 JP28037994A JP28037994A JP3396312B2 JP 3396312 B2 JP3396312 B2 JP 3396312B2 JP 28037994 A JP28037994 A JP 28037994A JP 28037994 A JP28037994 A JP 28037994A JP 3396312 B2 JP3396312 B2 JP 3396312B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- magnetic flux
- current
- coil
- melted
- 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 - Fee Related
Links
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は金属溶解・浮揚装置に関
し、溶解した金属を安定して保持できるように工夫した
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal melting / floating device, which is devised so as to stably hold a melted metal.
【０００２】[0002]
【従来の技術】図６に従来の金属溶解・浮揚装置を示
す。同図に示すように、容器１に巻き回した高周波コイ
ル２に交流電源３から交流電流を供給して、交番磁束４
を生じさせる。この磁束４により、容器１の内側面に誘
導電流５が、また球状となった金属６の表面に誘導電流
７が誘起される。誘導電流７のジュール発熱により金属
６が加熱・溶解されると共に、誘導電流５，７間の反発
力（電磁力）により金属６が浮揚される。2. Description of the Related Art FIG. 6 shows a conventional metal melting / levitation device. As shown in the figure, an alternating current is supplied from an alternating current power source 3 to a high frequency coil 2 wound around a container 1 to generate an alternating magnetic flux 4
Cause The magnetic flux 4 induces an induced current 5 on the inner surface of the container 1 and an induced current 7 on the surface of the spherical metal 6. The metal 6 is heated and melted by Joule heat generation of the induction current 7, and the metal 6 is levitated by the repulsive force (electromagnetic force) between the induction currents 5 and 7.
【０００３】[0003]
【発明が解決しようとする課題】ところで従来の金属溶
解・浮揚装置においては、誘導電流５及び誘導電流７の
分布や、溶解した金属６の圧力分布によっては、金属６
の内部で流動（主としてＺ方向の流動）が生じる。この
ため、溶解した金属６の界面が不安定化し、金属６の保
持が安全にはできないという課題があった。In the conventional metal melting / levitation device, depending on the distribution of the induced current 5 and the induced current 7 and the pressure distribution of the melted metal 6, the metal 6
A flow (flow mainly in the Z direction) occurs inside the. Therefore, there is a problem that the interface of the melted metal 6 becomes unstable and the metal 6 cannot be held safely.
【０００４】本発明は、上記従来技術に鑑み、溶解した
金属を安定保持することのできる金属溶解・浮揚装置を
提供することを目的とする。The present invention has been made in view of the above prior art, and an object of the present invention is to provide a metal melting / floating apparatus capable of stably holding a melted metal.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成する第１
の本発明の構成は、溶解される金属が納められる容器の
外周に高周波コイルを配置し、この高周波コイルに交流
電流を流して交番磁束を生じさせることにより、誘導電
流にて前記金属を溶解させると共に、電磁力にて前記金
属を空中に保持する金属溶解・浮揚装置において、前記
高周波コイルに直流電流を重畳して流す直流電流供給回
路を備えたことを特徴とする。[Means for Solving the Problems] First to achieve the above object
According to the configuration of the present invention, a high frequency coil is arranged on the outer periphery of a container in which a metal to be melted is stored, and an alternating current is caused to flow through the high frequency coil to generate an alternating magnetic flux, thereby melting the metal with an induced current. At the same time, in the metal melting / levitation device for holding the metal in the air by electromagnetic force, a direct current supply circuit for supplying a direct current to the high frequency coil in a superimposed manner is provided.
【０００６】また第２の本発明の構成は、溶解される金
属が納められる容器の外周に高周波コイルを配置し、こ
の高周波コイルに交流電流を流して交番磁束を生じさせ
ることにより、誘導電流にて前記金属を溶解させると共
に、電磁力にて前記金属を空中に保持する金属溶解・浮
揚装置において、直流電流が流されると直流成分磁束を
発生してこの直流成分磁束を前記金属に作用させる直流
励磁コイルを、前記容器の外周に配置し、更に前記直流
励磁コイルに直流電流を供給する直流電源を備えたこと
を特徴とする。Further, according to the second aspect of the present invention, a high frequency coil is arranged on the outer periphery of a container in which a metal to be melted is stored, and an alternating current is caused to flow in the high frequency coil to generate an alternating magnetic flux, thereby generating an induced current. In the metal melting and levitation device that melts the metal by the electromagnetic force and holds the metal in the air by electromagnetic force, a direct current component magnetic flux is generated when a direct current is applied, and this direct current component magnetic flux acts on the metal. An exciting coil is arranged on the outer circumference of the container, and a direct current power source for supplying a direct current to the direct current exciting coil is further provided.
【０００７】また第３の本発明の構成は、溶解される金
属が納められる容器の外周に高周波コイルを配置し、こ
の高周波コイルに交流電流を流して交番磁束を生じさせ
ることにより、誘導電流にて前記金属を溶解させると共
に、電磁力にて前記金属を空中に保持する金属溶解・浮
揚装置において、交流電流が流されると回転磁束を発生
してこの回転磁束を前記金属に作用させる回転磁場発生
用コイルを、前記容器の外周に配置し、更に前記回転磁
場発生用コイルに交流電流を供給する回転磁場発生用電
源を備えたことを特徴とする。Further, according to the third aspect of the present invention, a high frequency coil is arranged on the outer periphery of a container in which a metal to be melted is contained, and an alternating current is caused to flow through the high frequency coil to generate an alternating magnetic flux. In the metal melting and levitation device that melts the metal with the electromagnetic force and holds the metal in the air with electromagnetic force, a rotating magnetic flux is generated when an alternating current is applied, and the rotating magnetic flux is applied to the metal to generate the rotating magnetic field. Is disposed on the outer periphery of the container, and a rotating magnetic field generating power supply for supplying an alternating current to the rotating magnetic field generating coil is further provided.
【０００８】[0008]
【作用】本発明では直流成分磁束や回転磁束を溶解した
金属に作用させることにより、金属の液流動を抑制す
る。これにより金属を容器内に安定して保持する。According to the present invention, the direct current component magnetic flux and the rotating magnetic flux are applied to the molten metal to suppress the liquid flow of the metal. Thereby, the metal is stably held in the container.
【０００９】[0009]
【実施例】以下に本発明の実施例を図面に基づき詳細に
説明する。なお従来技術と同一機能をはたす部分には同
一符号を付す。Embodiments of the present invention will be described below in detail with reference to the drawings. The parts having the same functions as those in the prior art are designated by the same reference numerals.
【００１０】図１は本発明の第１実施例に係る金属溶解
・浮揚装置を示す。同図に示すように、分割されている
銅製の容器１の外周には、高周波コイル２が巻回されて
いる。この高周波コイル２には、トランス８を介して交
流電源３から交流電流が供給されると共に、直流電源９
から直流電流が重畳して供給される。この場合、コンデ
ンサ１０及びリアクトル１１の作用により、交流電流成
分が直流電源９に流れ込むのを防いでおり、コンデンサ
１２により直流電流成分がトランス８に流れ込むのを防
いでいる。なお１３は整合用コンデンサである。FIG. 1 shows a metal melting / levitation device according to a first embodiment of the present invention. As shown in the figure, a high frequency coil 2 is wound around the outer periphery of a divided copper container 1. An alternating current is supplied to the high frequency coil 2 from an alternating current power source 3 via a transformer 8 and a direct current power source 9
DC current is superposed and supplied from. In this case, the action of the capacitor 10 and the reactor 11 prevents the AC current component from flowing into the DC power supply 9, and the capacitor 12 prevents the DC current component from flowing into the transformer 8. Reference numeral 13 is a matching capacitor.
【００１１】また容器１内には溶解・浮揚対象となる金
属６が配置される。金属６は、アルミ，チタン，鉄，そ
の他の金属、又はこれらの合金等である。A metal 6 to be melted and floated is placed in the container 1. The metal 6 is aluminum, titanium, iron, other metals, or alloys thereof.
【００１２】高周波コイル２へ、交流電源３による交流
電流及び直流電源９による直流電流を供給すると、高周
波コイル２には、図２に示す波形のコイル電流１４が流
れる。このコイル電流１４により、容器１内には、図３
に示すような直流成分磁束１５が重畳された交番磁束４
が発生する。When an alternating current from the alternating current power supply 3 and a direct current from the direct current power supply 9 are supplied to the high frequency coil 2, a coil current 14 having a waveform shown in FIG. 2 flows through the high frequency coil 2. This coil current 14 causes the inside of the container 1 to move as shown in FIG.
Alternating magnetic flux 4 superposed with DC component magnetic flux 15 as shown in
Occurs.
【００１３】交番磁束４の交流成分により、容器１の内
側面に誘導電流５が、また金属６の表面に誘導電流７が
誘起される。この誘導電流７のジュール発熱により、金
属６が加熱・溶融されると共に、誘導電流５，７間の電
磁反発力により金属６が浮揚される。The alternating current component of the alternating magnetic flux 4 induces an induced current 5 on the inner surface of the container 1 and an induced current 7 on the surface of the metal 6. The Joule heat of the induced current 7 heats and melts the metal 6, and the metal 6 is levitated by the electromagnetic repulsive force between the induced currents 5 and 7.
【００１４】交番磁束４の交流成分は金属６の表層で減
衰されるが、直流成分磁束１５は金属６の内部にまで作
用する。したがって、導体である溶融した金属６が、直
流成分磁束１５に対して横切る方向に流動すると誘導電
流が流れ、この誘導電流と直流成分磁束１５との相互作
用力が、流動を抑制する方向に働き、ブレーキング効果
が発揮される。このため、溶融した金属６の内部での液
流動を低減でき、金属６を安定して浮揚させつつ溶解さ
せることができる。The AC component of the alternating magnetic flux 4 is attenuated in the surface layer of the metal 6, but the DC component magnetic flux 15 acts even inside the metal 6. Therefore, when the molten metal 6, which is a conductor, flows in a direction transverse to the DC component magnetic flux 15, an induced current flows, and the interaction force between the induced current and the DC component magnetic flux 15 works in the direction of suppressing the flow. , The braking effect is exerted. Therefore, the liquid flow inside the molten metal 6 can be reduced, and the metal 6 can be stably floated and dissolved.
【００１５】図４は本発明の第２実施例を示す。第２実
施例では、高周波コイル２とは別に直流励磁コイル１６
を備えており、直流電源９による直流電流を直流励磁コ
イル１６に流す。このようにすると、直流励磁コイル１
６から発生した直流成分磁束１５が金属６に作用して、
金属６の内部での液流動を低減させることができる。FIG. 4 shows a second embodiment of the present invention. In the second embodiment, the DC exciting coil 16 is provided separately from the high frequency coil 2.
Is provided, and a DC current from the DC power supply 9 is passed through the DC excitation coil 16. By doing this, the DC excitation coil 1
DC component magnetic flux 15 generated from 6 acts on metal 6,
Liquid flow inside the metal 6 can be reduced.
【００１６】図５は本発明の第３実施例を示す。第３実
施例では、高周波コイル２とは別に回転磁場発生用コイ
ル１７を備えており、回転磁場発生用電源１８による低
周波（１０〜１００Ｈｚ程度）の交流電流をコイル１７
に流す。このようにするとコイル１７から発生した低周
波の回転磁束１９が金属６に作用し、溶融した金属６の
内部でのＺ方向の液流動を低減させることができる。FIG. 5 shows a third embodiment of the present invention. In the third embodiment, a rotating magnetic field generating coil 17 is provided separately from the high frequency coil 2, and a low frequency (about 10 to 100 Hz) alternating current generated by the rotating magnetic field generating power supply 18 is applied to the coil 17.
Shed on. In this way, the low-frequency rotating magnetic flux 19 generated from the coil 17 acts on the metal 6, and the liquid flow in the Z direction inside the molten metal 6 can be reduced.
【００１７】更に回転磁場発生用コイル１７の外周に、
高周波磁束シールド板２０を設置することにより、電源
間の干渉のない安全な運転ができる。Further, on the outer circumference of the rotating magnetic field generating coil 17,
By installing the high frequency magnetic flux shield plate 20, safe operation without interference between power sources can be performed.
【００１８】ここで図５に示す第３実施例の具体的構成
例における溶解・浮揚の一例を示す。
高周波コイル２は巻径９０ｍｍで６ターンである。
コイル２に流す励磁電流は、交流成分１０００Ａｖ
ｍｓ（周波数２ＫＨｚ）であり、Ｚ方向には磁束密度が
約６２０ガウスの交番磁束を生じた。
コイル外周より、３０Ｈｚ，４００ガウスの回転磁
束１９を印加した。
この結果、金属６として１１０グラムのアルミを安
定して溶解・浮揚させることができた。Here, an example of melting and levitation in the concrete configuration example of the third embodiment shown in FIG. 5 will be shown. The high frequency coil 2 has a winding diameter of 90 mm and 6 turns. The exciting current flowing through the coil 2 is an AC component of 1000 Av
An alternating magnetic flux having a magnetic flux density of about 620 gauss was generated in the Z direction for ms (frequency: 2 KHz). A rotating magnetic flux 19 of 30 Hz and 400 Gauss was applied from the outer circumference of the coil. As a result, 110 g of aluminum as the metal 6 could be stably dissolved and floated.
【００１９】[0019]
【発明の効果】以上実施例と共に具体的に説明したよう
に本発明によれば、溶解した金属に直流成分磁束や回転
磁束を作用させるようにしたので、金属が流動しようと
してもこの流動を抑制する力が発生し、溶解・浮揚した
金属を安定して保持することができる。As described above in detail with the embodiments, according to the present invention, the DC component magnetic flux and the rotating magnetic flux are caused to act on the molten metal, so that even if the metal tries to flow, this flow is suppressed. As a result, a force is generated, and the molten and levitated metal can be stably held.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の第１実施例を示す構成図。FIG. 1 is a configuration diagram showing a first embodiment of the present invention.
【図２】コイル電流を示す波形図。FIG. 2 is a waveform diagram showing a coil current.
【図３】交番磁束を示す波形図。FIG. 3 is a waveform diagram showing an alternating magnetic flux.
【図４】本発明の第２実施例を示す構成図。FIG. 4 is a configuration diagram showing a second embodiment of the present invention.
【図５】本発明の第３実施例を示す構成図。FIG. 5 is a configuration diagram showing a third embodiment of the present invention.
【図６】従来技術を示す構成図。FIG. 6 is a configuration diagram showing a conventional technique.
１ 容器 ２ 高周波コイル ３ 交流電源 ４ 交番磁束 ５ 誘導電流 ６ 金属 ７ 誘導電流 ８ トランス ９ 直流電源 １０，１２ コンデンサ １１ リアクトル １３ 整合用コンデンサ １４ コイル電流 １５ 直流成分磁束 １６ 直流励磁コイル １７ 回転磁場発生用コイル １８ 回転磁場発生用電源 １９ 回転磁束 ２０ 高周波磁束シールド板 1 container 2 high frequency coil 3 AC power supply 4 alternating magnetic flux 5 induced current 6 metal 7 induced current 8 transformers 9 DC power supply 10, 12 capacitors 11 reactor 13 Matching capacitors 14 Coil current 15 DC component magnetic flux 16 DC excitation coil 17 Rotating magnetic field generating coil 18 Power supply for rotating magnetic field 19 Rotating magnetic flux 20 High frequency magnetic flux shield plate
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭64−24387（ＪＰ，Ａ) 国際公開94／3294（ＷＯ，Ａ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F27D 11/06 F27B 14/06 H05B 6/32 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-64-24387 (JP, A) International publication 94/3294 (WO, A1) (58) Fields investigated (Int.Cl. 7 , DB name) F27D 11/06 F27B 14/06 H05B 6/32
Claims (3)
に高周波コイルを配置し、この高周波コイルに交流電流
を流して交番磁束を生じさせることにより、誘導電流に
て前記金属を溶解させると共に、電磁力にて前記金属を
空中に保持する金属溶解・浮揚装置において、 前記高周波コイルに直流電流を重畳して流す直流電流供
給回路を備えたことを特徴とする金属溶解・浮揚装置。1. A high-frequency coil is arranged on the outer periphery of a container containing a metal to be melted, and an alternating current is caused to flow through the high-frequency coil to generate an alternating magnetic flux, whereby the metal is melted by an induced current, and A metal melting / levitation device for holding the metal in the air by an electromagnetic force, comprising a DC current supply circuit for supplying a DC current to the high frequency coil in a superimposed manner.
に高周波コイルを配置し、この高周波コイルに交流電流
を流して交番磁束を生じさせることにより、誘導電流に
て前記金属を溶解させると共に、電磁力にて前記金属を
空中に保持する金属溶解・浮揚装置において、 直流電流が流されると直流成分磁束を発生してこの直流
成分磁束を前記金属に作用させる直流励磁コイルを、前
記容器の外周に配置し、 更に前記直流励磁コイルに直流電流を供給する直流電源
を備えたことを特徴とする金属溶解・浮揚装置。2. A high-frequency coil is arranged on the outer periphery of a container containing a metal to be melted, and an alternating current is caused to flow through the high-frequency coil to generate an alternating magnetic flux, whereby the metal is melted by an induced current, and In a metal melting and levitation device that holds the metal in the air by electromagnetic force, a DC exciting coil that generates a DC component magnetic flux when the DC current is applied and causes the DC component magnetic flux to act on the metal is installed on the outer periphery of the container. And a DC power supply for supplying a DC current to the DC excitation coil.
に高周波コイルを配置し、この高周波コイルに交流電流
を流して交番磁束を生じさせることにより、誘導電流に
て前記金属を溶解させると共に、電磁力にて前記金属を
空中に保持する金属溶解・浮揚装置において、 交流電流が流されると回転磁束を発生してこの回転磁束
を前記金属に作用させる回転磁場発生用コイルを、前記
容器の外周に配置し、 更に前記回転磁場発生用コイルに交流電流を供給する回
転磁場発生用電源を備えたことを特徴とする金属溶解・
浮揚装置。3. A high-frequency coil is arranged on the outer periphery of a container containing a metal to be melted, and an alternating current is caused to flow through the high-frequency coil to generate an alternating magnetic flux, whereby the metal is melted by an induced current, and In a metal melting and levitation device that holds the metal in the air by electromagnetic force, a rotating magnetic field generating coil that generates a rotating magnetic flux when an alternating current is applied and causes the rotating magnetic flux to act on the metal is provided on the outer periphery of the container. And a rotating magnetic field generating power supply for supplying an alternating current to the rotating magnetic field generating coil.
Levitation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28037994A JP3396312B2 (en) | 1994-11-15 | 1994-11-15 | Metal melting / floating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28037994A JP3396312B2 (en) | 1994-11-15 | 1994-11-15 | Metal melting / floating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08136162A JPH08136162A (en) | 1996-05-31 |
| JP3396312B2 true JP3396312B2 (en) | 2003-04-14 |
Family
ID=17624204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28037994A Expired - Fee Related JP3396312B2 (en) | 1994-11-15 | 1994-11-15 | Metal melting / floating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3396312B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7167501B2 (en) * | 2004-01-17 | 2007-01-23 | Consarc Corporation | Cold crucible induction furnace with eddy current damping |
| NZ610276A (en) * | 2010-11-22 | 2015-02-27 | Electromagnetics Corp | Tailoring a metal or modifying an electronic structure thereof |
-
1994
- 1994-11-15 JP JP28037994A patent/JP3396312B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08136162A (en) | 1996-05-31 |
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