JP2002327989A - Induction heating water-cooled crucible furnace - Google Patents
Induction heating water-cooled crucible furnaceInfo
- Publication number
- JP2002327989A JP2002327989A JP2001131277A JP2001131277A JP2002327989A JP 2002327989 A JP2002327989 A JP 2002327989A JP 2001131277 A JP2001131277 A JP 2001131277A JP 2001131277 A JP2001131277 A JP 2001131277A JP 2002327989 A JP2002327989 A JP 2002327989A
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- Prior art keywords
- crucible
- cooled
- metal
- water
- furnace
- Prior art date
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- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、銅、銀等の高電気
伝導性、高熱伝導性金属を溶解することができる誘導加
熱式水冷坩堝炉に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating water-cooled crucible furnace capable of melting a metal having high electric conductivity and high heat conductivity such as copper and silver.
【０００２】[0002]
【従来の技術】一般に、銅等の金属製水冷坩堝の外周に
配置したコイルに高周波又は中周波電流を供給して誘導
加熱により坩堝内に収容した被溶解金属を溶解する炉、
すなわち誘導加熱式水冷坩堝炉は図２に示すような構造
を有している。この誘導加熱式水冷坩堝炉は坩堝の内壁
に溶解した金属が接触せず、低部においてのみ接触し、
いわゆる冷却された底部のみにおいて凝固部（スカル
部）が形成されるので、被溶解材である金属の坩堝から
の汚染を極力防止できることから、高純度金属の溶解に
利用されている。上記スカルが形成されるところから別
名「スカル炉」とも言われている。2. Description of the Related Art Generally, a furnace for supplying a high-frequency or medium-frequency current to a coil disposed on the outer periphery of a water-cooled crucible made of metal such as copper to melt the metal to be melted contained in the crucible by induction heating;
That is, the induction heating type water-cooled crucible furnace has a structure as shown in FIG. In this induction-heated water-cooled crucible furnace, the melted metal does not contact the inner wall of the crucible, but only in the lower part,
Since a solidified portion (skull portion) is formed only at the so-called cooled bottom portion, contamination of the material to be melted from the crucible can be prevented as much as possible, so that it is used for melting high-purity metal. It is also called "skull furnace" because of the formation of the skull.
【０００３】従来の誘導加熱式水冷坩堝炉の一般的な構
造を説明すると、炉体としての水冷銅坩堝２１は側壁２
２、底壁２３、坩堝底部２４からなる。水冷銅坩堝２１
の外周には、高周波又は中周波電流を供給するコイル２
５が設置されている。前記坩堝の側壁の下方は半径方向
に張り出しているフランジ２６を備え、他方坩堝底部に
も同様の張り出し部２７が設けられており、この両張り
出し部２６、２７がボルトで結合されている。坩堝の側
壁には垂直方向に延びる複数の溝（スリット）２８が形
成されており、複数の長手方向のセグメント２９に分離
されている。このようなスリットが形成された複数のセ
グメント２９からなる構造は、磁束を容易に通過させ磁
束密度を高める作用をする。[0003] The general structure of a conventional induction-heating water-cooled crucible furnace will be described.
2, a bottom wall 23 and a crucible bottom 24. Water-cooled copper crucible 21
Coil 2 for supplying high-frequency or medium-frequency current
5 are installed. Below the side wall of the crucible is provided a radially extending flange 26, while a similar overhang 27 is also provided at the bottom of the crucible, the two overhangs 26, 27 being connected by bolts. A plurality of vertically extending grooves (slits) 28 are formed in the side wall of the crucible, and are separated into a plurality of longitudinal segments 29. The structure including the plurality of segments 29 in which such slits are formed acts to easily pass the magnetic flux and increase the magnetic flux density.
【０００４】各セグメント２９の内部には水冷管３０が
設けられており、前記坩堝底部２４の配管３１を通し
て、坩堝の側壁２２及び底壁２３の冷却を行う。坩堝に
導入された被溶解金属３２はコイル２５に印加された高
周波又は中周波電流による交番磁場にさらされ溶解す
る。この場合、溶融金属の表面に作用する電磁力と溶融
金属の静圧との場バランスによって、図２に示すように
坩堝の上方部では坩堝の側壁から溶融金属３２から分離
し、冷却された底壁に接触する下方のみで一部凝固３３
する構造をとる。すなわち、卵型に金属が溶融するとい
う形式となる。これは誘導加熱式水冷坩堝炉の大きな特
徴である。溶融する金属の大部分は坩堝の側壁と接触せ
ず、接触している場合でも、溶融する金属の凝固殻（ス
カル）３３によって、坩堝の側壁２２からの汚染物質の
内部への侵入が防止できるので、高純度金属の溶解鋳造
が可能である。A water cooling pipe 30 is provided inside each segment 29, and cools the side wall 22 and the bottom wall 23 of the crucible through a pipe 31 of the crucible bottom 24. The to-be-dissolved metal 32 introduced into the crucible is melted by being exposed to an alternating magnetic field due to a high-frequency or medium-frequency current applied to the coil 25. In this case, due to the field balance between the electromagnetic force acting on the surface of the molten metal and the static pressure of the molten metal, the upper part of the crucible is separated from the molten metal 32 from the side wall of the crucible as shown in FIG. Partially solidified only below the wall contacting 33
Take the structure to do. That is, the metal is melted into an egg shape. This is a major feature of the induction heating water-cooled crucible furnace. Most of the melting metal does not come into contact with the side wall of the crucible, and even when it does, the solidified shell (skull) 33 of the melting metal can prevent contaminants from entering the inside from the side wall 22 of the crucible. Therefore, melting and casting of a high-purity metal is possible.
【０００５】上記に説明した誘導加熱式水冷坩堝炉２１
によりチタンやコバルト等の比較的電気伝導度や熱伝導
度が低い金属は問題なく溶解できるが、銅、銀等の高電
気伝導性、高熱伝導性金属は容易に溶解することができ
ず、たとえ溶解したとしても水冷坩堝に触れた部分か
ら、すぐに凝固しまうという問題があった。このような
誘導加熱式水冷坩堝炉２１は、高純度金属の溶解鋳造に
最適であるとい特長を有するにもかかわらず、特定の金
属のみ溶解が可能であり、溶解でき金属材料に制限があ
るという欠点があった。[0005] The induction-heated water-cooled crucible furnace 21 described above.
Metals with relatively low electrical and thermal conductivity, such as titanium and cobalt, can be dissolved without problems, but metals with high electrical and high thermal conductivity, such as copper and silver, cannot be easily dissolved. Even if it is melted, there is a problem that it immediately solidifies from the part touching the water-cooled crucible. Although such an induction-heating water-cooled crucible furnace 21 has the feature that it is most suitable for melting and casting of high-purity metal, it can melt only a specific metal, and there is a limit to the metal material that can be melted. There were drawbacks.
【０００６】[0006]
【発明が解決しょうとする課題】本発明は上記のような
誘導加熱式水冷坩堝炉の構造を改善し、銅、銀等の高電
気伝導性、高熱伝導性金属をも容易に溶解することがで
き同誘導加熱式水冷坩堝炉を提供するものである。SUMMARY OF THE INVENTION The present invention improves the structure of a water-cooled crucible of an induction heating type as described above, and can easily dissolve metals having high electrical conductivity and high thermal conductivity such as copper and silver. An object of the present invention is to provide an induction heating type water-cooled crucible furnace.
【０００７】[0007]
【課題を解決するための手段】本発明は、 １．坩堝の内壁面にカーボン製の円筒体を設置したこと
を特徴とする誘導加熱式水冷坩堝炉 ２．円筒体の厚みを３〜５０ｍｍとしたことを特徴とす
る請求項１記載の誘導加熱式水冷坩堝炉 に関する。The present invention provides: 1. An induction-heating water-cooled crucible furnace characterized by having a carbon cylinder placed on the inner wall surface of the crucible. The induction-heated water-cooled crucible furnace according to claim 1, wherein the thickness of the cylindrical body is 3 to 50 mm.
【０００８】[0008]
【発明の実施の形態】本発明の誘導加熱式水冷坩堝炉の
一例を図１に沿って説明する。本発明の誘導加熱式水冷
坩堝炉は、従来の誘導加熱式水冷坩堝炉をそのまま使用
できるし、また後述するカーボン製円筒体を坩堝の内壁
面に取付け一体構造とすることもできる。図１に示すも
のは、本発明の誘導加熱式水冷坩堝炉を使用した場合の
例であり、炉体としての水冷銅坩堝１は側壁２、底壁
３、坩堝底部４からなる。水冷銅坩堝１の外周に高周波
又は中周波電流を供給するコイル５を設置する。前記坩
堝の側壁の下方に半径方向に張り出すフランジ６を設
け、このフランジと坩堝底部４の張り出し部７とをボル
トで結合する。坩堝の側壁に垂直方向に延びる複数の溝
（スリット）８を形成し、従来技術と同様に複数の長手
方向のセグメント９に分離する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an induction heating type water-cooled crucible furnace of the present invention will be described with reference to FIG. The induction-heated water-cooled crucible furnace of the present invention can use a conventional induction-heated water-cooled crucible furnace as it is, or can be formed integrally with a carbon cylinder described later on the inner wall surface of the crucible. FIG. 1 shows an example in which the induction-heated water-cooled crucible furnace of the present invention is used. A water-cooled copper crucible 1 as a furnace body includes side walls 2, a bottom wall 3, and a crucible bottom 4. A coil 5 for supplying a high-frequency or medium-frequency current is provided on the outer periphery of the water-cooled copper crucible 1. A flange 6 extending radially below the side wall of the crucible is provided, and the flange and an extension 7 of the crucible bottom 4 are connected by bolts. A plurality of vertically extending grooves (slits) 8 are formed in the side wall of the crucible and are divided into a plurality of longitudinal segments 9 as in the prior art.
【０００９】各セグメントの内部に水冷管１０を設け、
前記坩堝底部４の配管１１を通して、坩堝１の側壁２及
び底壁３の冷却を行う。このような誘導加熱式水冷坩堝
炉１において、本発明は坩堝１の内壁面にカーボン製の
円筒体１２を設置することを特長とする。このカーボン
製の円筒体１２はコイル５に印加された高周波又は中周
波電流による交番磁場にさらされ高温に加熱されて、坩
堝１に導入された被溶解金属１３はこの熱により容易に
溶解する。この溶解する金属は電気伝導性又は熱伝導性
の高低にかかわらず、溶解が可能である。A water cooling tube 10 is provided inside each segment,
The side wall 2 and the bottom wall 3 of the crucible 1 are cooled through the pipe 11 of the crucible bottom 4. In such an induction heating type water-cooled crucible furnace 1, the present invention is characterized in that a carbon cylinder 12 is provided on the inner wall surface of the crucible 1. The carbon cylinder 12 is exposed to an alternating magnetic field by a high-frequency or medium-frequency current applied to the coil 5 and is heated to a high temperature, and the metal 13 introduced into the crucible 1 is easily melted by this heat. This dissolvable metal can be dissolved regardless of the level of electrical conductivity or thermal conductivity.
【００１０】しかし、カーボン製の円筒体１２に存在す
る溶融金属１３はその周囲の高周波又は中周波電流によ
る交番磁場にさらされているので、一部は水冷された坩
堝を介してカーボンと接触し凝固するが、その周囲の殆
どは接触しない。溶融金属の表面に作用する電磁力と溶
融金属の静圧との場バランスによって、図１に示すよう
に坩堝１の上方部ではカーボン製の円筒体１２の内壁と
溶融金属１３が分離し、冷却された例えば銅製等の金属
の底壁２に接触する下方のみで一部凝固する構造をと
る。すなわち、同様に卵型に金属が溶融するという形式
となる。However, since the molten metal 13 existing in the carbon cylinder 12 is exposed to an alternating magnetic field due to a high-frequency or medium-frequency current around it, a part of the molten metal 13 comes into contact with the carbon via a water-cooled crucible. Solidifies, but hardly contacts its surroundings. Due to the field balance between the electromagnetic force acting on the surface of the molten metal and the static pressure of the molten metal, the inner wall of the carbon cylinder 12 and the molten metal 13 are separated above the crucible 1 as shown in FIG. For example, it has a structure that is partially solidified only below the metal bottom wall 2 made of copper or the like. That is, the metal is similarly melted into an egg shape.
【００１１】溶融する金属１３の大部分はカーボン製の
円筒体１２とは接触せず、接触している場合でも、溶融
する金属の凝固殻（スカル）１４によって、カーボン製
の円筒体１２からの汚染物質の内部への侵入が最小限に
抑制できるので、高純度金属の溶解鋳造が可能である。
したがって、銅、銀等の高電気伝導性、高熱伝導性金属
をも本発明の坩堝の内壁面にカーボン製の円筒体１２を
設置した誘導加熱式水冷坩堝炉１によって容易に溶解す
ることができるという優れた効果を有する。上記のカー
ボン製の円筒体１２の厚さは３〜５０ｍｍとする。３ｍ
ｍ未満では強度的に弱く、また厚さが５０ｍｍを超える
と溶解はできるが、電磁力がカーボン製円筒体１２の内
側の金属まで浸透しないので、溶融金属が盛り上がら
ず、カーボン製円筒と接触して汚染の原因となるので上
記３〜５０ｍｍの範囲とする。Most of the metal 13 to be melted does not come into contact with the cylindrical body 12 made of carbon, and even when it is in contact therewith, the solidified shell (skull) 14 of the metal to be melted causes the metal 13 to be removed from the cylindrical body 12 made of carbon. Since the intrusion of contaminants into the interior can be suppressed to a minimum, high purity metal can be melted and cast.
Therefore, even a metal having high electrical conductivity and high thermal conductivity such as copper and silver can be easily melted by the induction-heating water-cooled crucible furnace 1 in which the carbon cylinder 12 is provided on the inner wall surface of the crucible of the present invention. It has an excellent effect. The thickness of the carbon cylinder 12 is 3 to 50 mm. 3m
If the thickness is less than m, the strength is weak, and if the thickness exceeds 50 mm, melting can be performed. However, since the electromagnetic force does not penetrate into the metal inside the carbon cylinder 12, the molten metal does not rise and comes into contact with the carbon cylinder. Therefore, the thickness is in the range of 3 to 50 mm.
【００１２】[0012]
【実施例及び比較例】次に、実施例及び比較例に基づい
て説明する。なお、これらは本発明の理解を容易にする
ためのものであり、本発明はこれらに制限されるもので
はない。Examples and Comparative Examples Next, description will be made based on Examples and Comparative Examples. Note that these are intended to facilitate understanding of the present invention, and the present invention is not limited to these.
【００１３】（実施例１）図１に示す水冷銅坩堝と同等
の坩堝を使用し、該坩堝内に厚さ１０ｍｍのカーボン製
円筒体を取付けた。この水冷銅坩堝を使用して銅を溶解
した。周波数は１ｋＨｚである。この溶解の概念図を図
２に示す。図２に示すように、溶融金属１８は坩堝１５
内の厚さ１０ｍｍカーボン製円筒体１６の下方のわずか
な部分で接触するのみで、卵型に溶融保持され完全な溶
解が達成できた。底部にはスカル１７が形成された。(Example 1) A crucible equivalent to the water-cooled copper crucible shown in FIG. 1 was used, and a 10 mm-thick carbon cylinder was mounted in the crucible. Copper was melted using this water-cooled copper crucible. The frequency is 1 kHz. A conceptual diagram of this dissolution is shown in FIG. As shown in FIG. 2, the molten metal 18 is placed in the crucible 15
The inner part was melted and held in an oval shape, and complete dissolution was achieved only by making contact with a small portion of the inside of the carbon-made cylindrical body 16 having a thickness of 10 mm. A skull 17 was formed at the bottom.
【００１４】（比較例）実施例１と同様に、図１に示す
水冷銅坩堝と同等の坩堝を使用し、該坩堝内にカーボン
製円筒体を配置せずに銅を溶解した。周波数は同様に１
ｋＨｚとした。この溶解の概念図を図３に示す。これに
よると、溶解した金属が水冷銅坩堝１９に触れた部分か
ら抜熱が起こりそれ以上の溶解が進まず、その結果、銅
の表面のみが溶解する現象が起こり、目的とする溶解が
十分にできなかった。図３に示す符号２０は溶解（溶融
金属）部分であり、符号２１は内部の未溶解部分であ
る。(Comparative Example) As in Example 1, a crucible equivalent to the water-cooled copper crucible shown in FIG. 1 was used, and copper was melted without disposing a carbon cylinder in the crucible. The frequency is also 1
kHz. A conceptual diagram of this dissolution is shown in FIG. According to this, heat is removed from the portion where the melted metal has touched the water-cooled copper crucible 19 and further melting does not proceed. As a result, a phenomenon occurs in which only the copper surface is melted, and the desired melting is not sufficiently performed. could not. Reference numeral 20 shown in FIG. 3 is a molten (molten metal) portion, and reference numeral 21 is an undissolved portion inside.
【００１５】[0015]
【発明の効果】上記に記載する通り、本発明の坩堝の内
壁面にカーボン製の円筒体を設置した誘導加熱式水冷坩
堝炉によって銅、銀等の高電気伝導性、高熱伝導性金属
をも容易に溶解することができるという優れた効果を有
する。As described above, an induction-heated water-cooled crucible furnace in which a carbon-made cylinder is installed on the inner wall surface of the crucible of the present invention can also be used to produce a metal having high electrical conductivity and high thermal conductivity such as copper and silver. It has an excellent effect that it can be easily dissolved.
【図１】本発明の一例を示す坩堝の内壁面にカーボン製
の円筒体を設置した誘導加熱式水冷坩堝炉の断面説明図
である。FIG. 1 is an explanatory cross-sectional view of an induction heating water-cooled crucible furnace in which a carbon cylindrical body is installed on the inner wall surface of a crucible according to an example of the present invention.
【図２】実施例に示す溶解の概念図である。FIG. 2 is a conceptual diagram of dissolution shown in an example.
【図３】比較例に示す溶解の概念図である。FIG. 3 is a conceptual diagram of dissolution shown in a comparative example.
１、１５、１９ 坩堝 ２ 側壁 ３ 底壁 ４ 坩堝底部 ５ コイル ６ フランジ ７ 張り出し部 ８ スリット ９ セグメント １０ 水冷管 １１ 配管 １２ カーボン製の円筒体 １３、１８、２０ 溶融金属 １４、１７ 凝固殻（スカル） ２１ 未溶解部 1, 15, 19 crucible 2 side wall 3 bottom wall 4 crucible bottom 5 coil 6 flange 7 overhang 8 slit 9 segment 10 water cooling pipe 11 pipe 12 carbon cylindrical body 13, 18, 20 molten metal 14, 17 solidified shell (skull) ) 21 Undissolved part
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【手続補正書】[Procedure amendment]
【提出日】平成１３年６月１５日（２００１．６．１
５）[Submission date] June 15, 2001 (2001.6.1)
5)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Correction target item name] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００３】従来の誘導加熱式水冷坩堝炉の一般的な構
造を説明すると、図２に示すように、炉体としての水冷
銅坩堝１５は側壁、底壁、坩堝底部からなる。水冷銅坩
堝１５の外周には、高周波又は中周波電流を供給するコ
イルが設置されている。前記坩堝の側壁の下方は半径方
向に張り出しているフランジを備え、他方坩堝底部にも
同様の張り出し部が設けられており、この両張り出し部
がボルトで結合されている。坩堝の側壁には垂直方向に
延びる複数の溝（スリット）が形成されており、複数の
長手方向のセグメントに分離されている。このようなス
リットが形成された複数のセグメントからなる構造は、
磁束を容易に通過させ磁束密度を高める作用をする。こ
のような構造は、後述するカーボン製の円筒体を除き、
図１と同様の構造を有している。 [0003] The general structure of a conventional induction-heated water-cooled crucible furnace will be described . As shown in FIG. 2, a water-cooled copper crucible 15 as a furnace body has a side wall, a bottom wall, and a crucible bottom. A coil for supplying a high-frequency or medium-frequency current is provided on the outer periphery of the water-cooled copper crucible 15 . Below the side wall of the crucible is provided a radially projecting flange, while a similar overhang is provided at the bottom of the crucible, which are bolted together. A plurality of vertically extending grooves (slits) are formed in the side wall of the crucible, and are separated into a plurality of longitudinal segments. The structure consisting of a plurality of segments in which such a slit is formed,
It functions to easily pass the magnetic flux and increase the magnetic flux density. This
Such a structure, except for a carbon cylinder described later,
It has a structure similar to that of FIG.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００４】各セグメントの内部には水冷管が設けられ
ており、前記坩堝底部の配管を通して、坩堝の側壁及び
底壁の冷却を行う。坩堝に導入された被溶解金属はコイ
ルに印加された高周波又は中周波電流による交番磁場に
さらされ溶解する。この場合、溶融金属の表面に作用す
る電磁力と溶融金属の静圧との場バランスによって、図
２に示すように坩堝の上方部では坩堝の側壁から溶融金
属１８が分離し、冷却された底壁に接触する下方のみで
一部凝固１７する構造をとる。すなわち、卵型に金属が
溶融するという形式となる。これは誘導加熱式水冷坩堝
炉の大きな特徴である。溶融する金属の大部分は坩堝の
側壁と接触せず、接触している場合でも、溶融する金属
の凝固殻（スカル）１７によって、坩堝の側壁１６から
の汚染物質の内部への侵入が防止できるので、高純度金
属の溶解鋳造が可能である。A water cooling pipe is provided inside each segment, and cools the side wall and the bottom wall of the crucible through a pipe at the bottom of the crucible. The metal to be melted introduced into the crucible is exposed and melted by an alternating magnetic field caused by a high-frequency or medium-frequency current applied to the coil. In this case, due to the field balance between the electromagnetic force acting on the surface of the molten metal and the static pressure of the molten metal, the molten metal 18 is separated from the side wall of the crucible at the upper part of the crucible as shown in FIG. It takes a structure that partially solidifies 17 only below the wall in contact with the wall. That is, the metal is melted into an egg shape. This is a major feature of the induction heating water-cooled crucible furnace. Most of the melting metal does not come into contact with the side wall of the crucible, and even when it does, the solidified shell (skull) 17 of the melting metal can prevent contaminants from entering the inside from the side wall 16 of the crucible. Therefore, melting and casting of a high-purity metal is possible.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Correction target item name] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００５】上記に説明した誘導加熱式水冷坩堝炉１５
によりチタンやコバルト等の比較的電気伝導度や熱伝導
度が低い金属は問題なく溶解できるが、銅、銀等の高電
気伝導性、高熱伝導性金属は容易に溶解することができ
ず、たとえ溶解したとしても水冷坩堝に触れた部分か
ら、すぐに凝固しまうという問題があった。このような
誘導加熱式水冷坩堝炉１５は、高純度金属の溶解鋳造に
最適であるという特長を有するにもかかわらず、特定の
金属のみ溶解が可能であり、溶解でき金属材料に制限が
あるという欠点があった。[0005] The induction-heated water-cooled crucible furnace 15 described above.
Metals with relatively low electrical and thermal conductivity, such as titanium and cobalt, can be dissolved without problems, but metals with high electrical and high thermal conductivity, such as copper and silver, cannot be easily dissolved. Even if it is melted, there is a problem that it immediately solidifies from the part that touches the water-cooled crucible. Such an induction-heated water-cooled crucible furnace 15 is capable of melting only a specific metal, and has a limitation in the metal material that can be melted, although it has the feature of being optimal for melting and casting of high-purity metal. There were drawbacks.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】[0006]
【発明が解決しょうとする課題】本発明は上記のような
誘導加熱式水冷坩堝炉の構造を改善し、銅、銀等の高電
気伝導性、高熱伝導性金属をも容易に溶解することがで
きる同誘導加熱式水冷坩堝炉を提供するものである。SUMMARY OF THE INVENTION The present invention improves the structure of a water-cooled crucible of an induction heating type as described above, and can easily dissolve metals having high electrical conductivity and high thermal conductivity such as copper and silver. so
The present invention provides a water-cooled crucible furnace of the induction heating type.
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１４】（比較例）実施例１と同様に、図１に示す
水冷銅坩堝と同等の坩堝を使用し、該坩堝内にカーボン
製円筒体を配置せずに銅を溶解した。周波数は同様に１
ｋＨｚとした。この溶解の概念図を図３に示す。これに
よると、溶解した金属が水冷銅坩堝１５に触れた部分か
ら抜熱が起こりそれ以上の溶解が進まず、その結果、銅
の表面のみが溶解する現象が起こり、目的とする溶解が
十分にできなかった。図３に示す符号２０は溶解（溶融
金属）部分であり、符号２１は内部の未溶解部分であ
る。(Comparative Example) As in Example 1, a crucible equivalent to the water-cooled copper crucible shown in FIG. 1 was used, and copper was melted without disposing a carbon cylinder in the crucible. The frequency is also 1
kHz. A conceptual diagram of this dissolution is shown in FIG. According to this, heat is removed from the portion where the melted metal has touched the water-cooled copper crucible 15 and further melting does not proceed. As a result, a phenomenon occurs in which only the copper surface is melted, and the desired melting is not sufficiently performed. could not. Reference numeral 20 shown in FIG. 3 is a molten (molten metal) portion, and reference numeral 21 is an undissolved portion inside.
Claims (2)
置したことを特徴とする誘導加熱式水冷坩堝炉。1. An induction-heating water-cooled crucible furnace, wherein a carbon cylindrical body is provided on the inner wall surface of the crucible.
を特徴とする請求項１記載の誘導加熱式水冷坩堝炉。2. The induction-heated water-cooled crucible furnace according to claim 1, wherein the thickness of the cylindrical body is 3 to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001131277A JP2002327989A (en) | 2001-04-27 | 2001-04-27 | Induction heating water-cooled crucible furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001131277A JP2002327989A (en) | 2001-04-27 | 2001-04-27 | Induction heating water-cooled crucible furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002327989A true JP2002327989A (en) | 2002-11-15 |
Family
ID=18979490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001131277A Withdrawn JP2002327989A (en) | 2001-04-27 | 2001-04-27 | Induction heating water-cooled crucible furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002327989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313447A (en) * | 2011-10-25 | 2012-01-11 | 沈阳师范大学 | Medium-frequency induction heating furnace for smelting nonmetallic high-melting-point oxide |
| CN109867434A (en) * | 2019-04-23 | 2019-06-11 | 蚌埠中光电科技有限公司 | A kind of heating system for platinum channel in electronical display glass manufacture |
-
2001
- 2001-04-27 JP JP2001131277A patent/JP2002327989A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313447A (en) * | 2011-10-25 | 2012-01-11 | 沈阳师范大学 | Medium-frequency induction heating furnace for smelting nonmetallic high-melting-point oxide |
| CN109867434A (en) * | 2019-04-23 | 2019-06-11 | 蚌埠中光电科技有限公司 | A kind of heating system for platinum channel in electronical display glass manufacture |
| CN109867434B (en) * | 2019-04-23 | 2024-02-13 | 蚌埠中光电科技有限公司 | Heating system for platinum channel in electronic display glass manufacturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080701 |