JPH03226338A - Apparatus for melting and continuously casting metal - Google Patents
Apparatus for melting and continuously casting metalInfo
- Publication number
- JPH03226338A JPH03226338A JP1869490A JP1869490A JPH03226338A JP H03226338 A JPH03226338 A JP H03226338A JP 1869490 A JP1869490 A JP 1869490A JP 1869490 A JP1869490 A JP 1869490A JP H03226338 A JPH03226338 A JP H03226338A
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- metal
- molten metal
- melting
- wall
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 48
- 239000002184 metal Substances 0.000 title claims abstract description 48
- 238000002844 melting Methods 0.000 title claims abstract description 13
- 230000008018 melting Effects 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 title abstract description 6
- 230000006698 induction Effects 0.000 claims abstract description 18
- 239000002826 coolant Substances 0.000 claims abstract description 3
- 238000009749 continuous casting Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 16
- 239000002893 slag Substances 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 11
- 239000000112 cooling gas Substances 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000005058 metal casting Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、誘導加熱が行われる冷却式るつぼを使用し
て、大気から遮断した状態で各種の金属を溶解し且つ連
続的に鋳造する装置、詳しくは金属の融解および鋳造を
行うに際し、スラグ剖を使用せず、しかも溶融金属がる
つぼの内面と接触することなく鋳造できる装置に関する
。Detailed Description of the Invention (Field of Industrial Application) This invention is an apparatus for melting and continuously casting various metals in a state shielded from the atmosphere using a cooled crucible that performs induction heating. More specifically, the present invention relates to an apparatus that can melt and cast metal without using a slag breaker and without molten metal coming into contact with the inner surface of a crucible.
（従来の技術）
冷却式るつぼ（い°わゆるコールドクルージプル）を用
いる溶解、鋳造法は、チタンやジルコニウム等の高融点
で反応性に冨む金属を融解し、そのインゴットを製造す
る場合などに使用される。(Prior art) Melting and casting methods using a cooled crucible (so-called cold crucible pull) are used to melt highly reactive metals with high melting points such as titanium and zirconium, and to produce ingots of them. used for.
第５図（ａ）および（ｂ）は、米国特許３，７７５，０
９１号明細書に開示されているこの種の冷却式るつぼ装
置の一つである。この装置は、図示のようにチャンバー
１内に配置され、スリット７で分割されたセクター８か
らなる銅製のるつぼ２、その外側を囲繞する誘導コイル
９、鋳造されたインゴットを支持する引き抜き捧５、ス
ラグ削のフィーダーｌＯと金属原料のフィーダー１１か
ら構成されている。そして前記るつぼ２の内部には水路
が形成されて冷却水が流され、前記コイル９には中波ま
たは高周波の交流電流が通される。誘導コイルに交流電
流が流されると、そこで発生する交番磁場でるつぼ内に
装入された金属原料にＴ！ｉ流が誘発され、金属原料は
ジュール熱によって加熱され融解する。融解された金属
はるつぼ２の特に下方で冷却されてインゴットとなり、
引き抜き棒５により下方に引き抜かれる。Figures 5(a) and (b) are shown in U.S. Patent No. 3,775,0
This type of refrigerated crucible device is disclosed in Japanese Patent No. 91. This device is arranged in a chamber 1 as shown in the figure, and includes a copper crucible 2 consisting of sectors 8 divided by slits 7, an induction coil 9 surrounding the outside of the crucible, a drawing rod 5 supporting a cast ingot, It consists of a feeder lO for slag cutting and a feeder 11 for metal raw materials. A water channel is formed inside the crucible 2 to allow cooling water to flow therein, and a medium-wave or high-frequency alternating current is passed through the coil 9. When an alternating current is passed through the induction coil, the alternating magnetic field generated there causes a T! An i-flow is induced, and the metal raw material is heated and melted by Joule heat. The molten metal is cooled particularly in the lower part of the crucible 2 and becomes an ingot.
It is pulled out downward by the pull-out rod 5.
上記の米国特許３，７７５，０９１号明細書の装置に限
らず、従来のこの種の装置では、熔融金属とるつぼとの
直接接触を避けるため、第５図の（ｂ）に示すようにる
つぼと溶融金属およびインゴットとの間にスラグ層１２
を形成させる。しかし、このスラグの存在は、スラグに
よる金属の汚染やるつぼの腐食を招き、また融解操作が
真空下で行われる場合には、スラグが蒸発してチャンバ
ー内に付着するという弊害を生じ、さらに溶解中にイン
ゴットが変形したり、インゴットに付着したスラグを剥
ぎ取るために余分な工程を必要とするなど、多くの問題
を発生させる。In conventional devices of this type, not limited to the device of the above-mentioned US Pat. No. 3,775,091, in order to avoid direct contact between the molten metal and the crucible, the crucible is A slag layer 12 between the molten metal and the ingot.
to form. However, the presence of this slag causes metal contamination and corrosion of the crucible, and when the melting operation is performed under vacuum, the slag evaporates and adheres to the inside of the chamber. This causes many problems, such as deformation of the ingot and the need for an extra process to remove slag attached to the ingot.
（発明が解決しようとする課題）
この発明の目的は、スラグを使用することなく、高融点
で反応性の高い金属のインゴットを連続的に製造できる
冷却式るつぼを備えた装置を提供し、上述のような従来
の冷却式るつぼ装置における問題点をなくすることにあ
る。(Problems to be Solved by the Invention) An object of the present invention is to provide an apparatus equipped with a cooling crucible that can continuously produce ingots of a metal with a high melting point and high reactivity without using slag. The object of the present invention is to eliminate problems in conventional cooling crucible devices such as.
（課題を解決するための手段）
先に述べた従来の装置では、るつぼ内の金属原料を融解
するとともに、溶融金属をるつぼ壁と接触しないように
ピンチ力だけで電磁保持することは困難である。そのた
め、溶融金属とるつぼ壁との間にスラグ層を介在させて
、その接触を絶つという手段を採っていた。(Means for solving the problem) With the conventional device described above, it is difficult to melt the metal raw material in the crucible and to electromagnetically hold the molten metal so that it does not come into contact with the crucible wall using just a pinch force. . Therefore, a method has been adopted in which a slag layer is interposed between the molten metal and the crucible wall to cut off the contact.
しかし、本発明者らは、溶融金属に作用する電磁力め特
に弱い部分において溶融金属の冷却を促進し、凝固現象
によって生じる金属格子間の結合力をｒｉ電磁力併用す
ることにより溶融金属をるつぼ壁から離反させ非接触と
することが可能であることを知った。そこで、るつぼ内
で溶融した金属を積極的に冷却する手段として、冷却気
体を溶融金属に吹き付ける方法を採れば、凝固を促進で
きるだけでなく、気体の動圧によりインゴットを正しく
垂直に保持することができることを確認した。However, the present inventors have proposed that the electromagnetic force acting on the molten metal accelerates the cooling of the molten metal in particularly weak parts, and uses the bonding force between metal lattices caused by the solidification phenomenon in combination with the RI electromagnetic force to bring the molten metal into a crucible. I learned that it is possible to move it away from the wall and make it non-contact. Therefore, by spraying cooling gas onto the molten metal as a means of actively cooling the molten metal in the crucible, it is possible to not only promote solidification but also to hold the ingot correctly vertically due to the dynamic pressure of the gas. I confirmed that it can be done.
これらの知見を基にしてなされた本発明は、下記の装置
をその要旨とする。The present invention, which was made based on these findings, has the gist of the following device.
電気伝導性のるつぼと、このるつぼを囲繞するように配
置された誘導コイルと、鋳造される金属を支持する引き
抜き棒と、上記のすべてを大気から遮断するチャンバー
とを有し、前記るつぼは、その壁が高さ方向の少なくと
も一部において単数または複数のスリットで分割されて
おり、このスリットで分割される各セクターには冷却媒
体の流通路があり、しかもチャンバーの外からるつぼの
内側に気体を導入す゛る気体供給用管を有することを特
徴とする金属の溶解と連続鋳造のための装置。The crucible comprises an electrically conductive crucible, an induction coil disposed surrounding the crucible, a draw rod supporting the metal to be cast, and a chamber shielding all of the above from the atmosphere. The wall is divided at least in part in the height direction by one or more slits, and each sector divided by the slits has a flow path for a cooling medium, and gas can be introduced from outside the chamber into the inside of the crucible. An apparatus for melting and continuous casting of metals, characterized by having a gas supply pipe for introducing gas.
上記の本発明装置による融解、鋳造の際には、熔融金属
の温度降下が著しいので、気体の吹きつけ位置より少し
上の溶融金属の温度を高める対策を講しるのが望ましい
、その具体的な手段としては、加熱を促進する位置に相
当するるつぼの壁厚を薄くし、誘導電流路の距離を短縮
してその部分の電流密度を高めるようにするのがよい、
即ち、前記スリットが存在する部分におけるるつぼの外
径が、るつぼの高さ方向に変化している装置が本発明の
望ましい態様である。During melting and casting using the above-mentioned apparatus of the present invention, the temperature of the molten metal drops significantly, so it is desirable to take measures to increase the temperature of the molten metal slightly above the position where the gas is blown. A good way to do this is to reduce the wall thickness of the crucible in areas where heating is promoted, shorten the distance of the induced current path, and increase the current density in those areas.
That is, a desirable embodiment of the present invention is an apparatus in which the outer diameter of the crucible at the portion where the slit is present changes in the height direction of the crucible.
以下、この発明の装置を図面を用いて詳しく説明する。Hereinafter, the apparatus of the present invention will be explained in detail using the drawings.
第１図（ａｌは、本発明装置の１例の継断面図、同（ｂ
）は第１図（ａ）のＡ−Ａ矢視の水平断面図である。FIG. 1 (al is a joint sectional view of an example of the device of the present invention, FIG. 1 (b)
) is a horizontal sectional view taken along the line A-A in FIG. 1(a).
これらの図において、■は下部に排気口１ａを有するチ
ャンバーであり、この中に円筒状のるつぼ２が設置され
、このるつぼ２を囲繞するように誘導コイル３が設けら
れている＃誘導コイル３はリード線３ａにより図示しな
い電源に接続されている。In these figures, ■ is a chamber having an exhaust port 1a at the bottom, a cylindrical crucible 2 is installed in this chamber, and an induction coil 3 is installed so as to surround this crucible 2. #Induction coil 3 is connected to a power source (not shown) by a lead wire 3a.
るつぼ２の上方には原料Ｇを供給する振動フィーダ４が
配置され、その下方にはるつぼ２内で融解され、凝固し
たインゴットＩを支持する引き抜き棒５が設けられてい
る。A vibrating feeder 4 for supplying the raw material G is arranged above the crucible 2, and a drawing rod 5 for supporting the ingot I that has been melted and solidified in the crucible 2 is provided below the vibrating feeder 4.
るつぼ２は、上部部材２ａ、中間部材２ｂおよび下部部
材２ｃから構成され、上部部材２ａは排水口２ｄをもつ
円筒状の中空体で、下部部材２ｃは給水口２ｅを有し下
端が鍔状の円盤になった円筒状の中空体であり、両部材
は中間部材２ｂを貫通する冷却水通路２ｆ （第１図（
ｂ）参照）で接続されている。The crucible 2 is composed of an upper member 2a, an intermediate member 2b, and a lower member 2c. The upper member 2a is a cylindrical hollow body having a drainage port 2d, and the lower member 2c has a water supply port 2e and a brim-shaped lower end. It is a cylindrical hollow body shaped like a disk, and both members have a cooling water passage 2f passing through the intermediate member 2b (see Fig. 1).
(see b)).
るつぼの中間部材２ｂは電気伝導性の材料、例えば銅で
作られ、その構造は第１図（ｂ）に示すようにスリンＨ
ｈで分割された複数のセクター２ｇが円筒状に配置され
たものである。各セクター２ｇには冷却水通路２ｆが形
成されている。この第１図の装置では、るつぼの中間部
材２ｂの外側に窪み２１が設けられ、この部分で肉厚を
薄くして電流密度が高められるように配慮されている。The intermediate member 2b of the crucible is made of an electrically conductive material such as copper, and its structure is as shown in FIG.
A plurality of sectors 2g divided by h are arranged in a cylindrical shape. A cooling water passage 2f is formed in each sector 2g. In the apparatus shown in FIG. 1, a recess 21 is provided on the outside of the intermediate member 2b of the crucible, and consideration is given to making the wall thickness thinner in this portion to increase the current density.
さらに、るつぼの下部部材２ｃと中間部材２ｂを貫通し
てチャンバー１の外から冷却用の気体を導入する気体供
給管６があり、第１図［有］）に仮に示すようにこの管
はるつぼの内側に開口し、気体をるつぼ壁とインゴット
との間に供給するように構成されている。Furthermore, there is a gas supply pipe 6 that penetrates the lower member 2c and the intermediate member 2b of the crucible and introduces cooling gas from outside the chamber 1. As shown tentatively in FIG. The crucible is opened to the inside of the crucible and is configured to supply gas between the crucible wall and the ingot.
（作用）
次に上記装置により原料金属を融解してインゴットを作
る方法を説明する。(Function) Next, a method for melting raw metal and producing an ingot using the above-mentioned apparatus will be explained.
まず引き抜き棒５を上昇させてこの引き抜き棒の上端に
取り付けた母材をるつぼ２内に挿入する。First, the drawing rod 5 is raised and the base material attached to the upper end of this drawing rod is inserted into the crucible 2.
その後、誘導コイル３に中波または高周波の交流電流を
供給すると、るつぼ２のスリット２ｈ部を介して誘導電
流が、母材の表面をながれるので母材は加熱されてやが
て融解する。引き続き溶融した母材の上に振動フィ゛−
ダ４から金属原料Ｇを装入する。スリン）２ｈの中間部
より上部の溶融金属Ｍはその静圧の増加とともに磁気圧
力が増大するので、その磁気圧力により溶融金属Ｍをる
つぼ２の内壁から離反させて非接触状態で安定して保持
することができる。Thereafter, when a medium-wave or high-frequency alternating current is supplied to the induction coil 3, the induced current flows over the surface of the base material through the slit 2h of the crucible 2, so that the base material is heated and eventually melts. Next, a vibration beam is applied to the molten base material.
The metal raw material G is charged from the tank 4. The magnetic pressure of the molten metal M above the middle part of the crucible 2h increases as its static pressure increases, so the magnetic pressure causes the molten metal M to separate from the inner wall of the crucible 2 and stably hold it in a non-contact state. can do.
るつぼの中間部分より下方では、気体供給配管６を介し
て溶融金属ＭにＡｒガスなどの冷却気体を吹きつけて凝
固させる。冷却気体はるつぼ２の内壁に沿って下方に流
れ、溶融金属の凝固を促進した後、排気孔１ａから系外
に排出される。Below the middle part of the crucible, a cooling gas such as Ar gas is blown onto the molten metal M via the gas supply pipe 6 to solidify it. The cooling gas flows downward along the inner wall of the crucible 2, accelerates the solidification of the molten metal, and is then discharged from the system through the exhaust hole 1a.
従来の装置では、るつぼの下部においても金属は溶融状
態にあり、磁気圧力も小さいので、溶融金属はるつぼ壁
と接触する。しかし、本発明装置においでは、るつぼ中
間部より下方では金属は凝固しているので、この部分に
おいて溶融金属がるつぼ壁に接触することがない、さら
に、気体の吹き込み圧力を適正に維持すれば、インゴッ
トＩを垂直に保持してるつぼ２の内壁に接触することな
く連続的に鋳造される。In conventional devices, the metal is in a molten state even at the bottom of the crucible and the magnetic pressure is low, so that the molten metal contacts the crucible wall. However, in the apparatus of the present invention, since the metal is solidified below the middle part of the crucible, the molten metal does not come into contact with the crucible wall in this part.Furthermore, if the gas blowing pressure is maintained appropriately, The ingot I is held vertically and cast continuously without contacting the inner wall of the crucible 2.
第１図の装置では、冷却るつぼのスリットで分割された
セクターの肉厚が、溶融金属の冷却部のわずかに上で薄
くなるように設計されており、この部分の水平断面にお
ける外径（もしくは外周長さ）が他の部分より短い、従
って、この部分の誘導電流路の距離が短くなり、電流密
度が高くなって、この部分では溶融金属をるつぼから離
反させるピンチ力が大きくなると同時に、溶融金属の温
度も高くなる。In the apparatus shown in Figure 1, the wall thickness of the sectors divided by the slits of the cooling crucible is designed to be thinner slightly above the cooling part of the molten metal, and the outer diameter (or Therefore, the distance of the induced current path in this part is shortened, the current density is high, and the pinch force that separates the molten metal from the crucible becomes large in this part, and at the same time, the molten metal The temperature of the metal also increases.
本発明装置の主要な部分であるるつぼ２と誘導コイル３
の形状、配置については種々の形態が考えられる。第２
図〜第４図は、その数例を示す縦断面図である。Crucible 2 and induction coil 3, which are the main parts of the device of the present invention
Various shapes and arrangements can be considered. Second
4 to 4 are vertical sectional views showing several examples thereof.
第２図に示す例は、るつぼ２の中間部材２ｂを単に円筒
形にし、その外側に互いに隣接しかつ！＠録された誘導
コイル３を螺旋状に４回巻回したものである。このよう
なコイル配置でも、るつぼ中間部の冷却気体吹き出し部
より少し上の部分の電流密度を高めてその部分のｔｌｌ
金金属温度を高めにすることができる。In the example shown in FIG. 2, the intermediate members 2b of the crucible 2 are simply cylindrical, adjacent to each other on the outside, and! This is an induction coil 3 wound spirally four times. Even with such a coil arrangement, the current density in the part slightly above the cooling gas blowout part in the middle part of the crucible is increased, and the tll in that part is increased.
Gold metal temperature can be increased.
第３図に示すのば、中間部材２ｂの上部を下部より薄ク
シ、誘導コイル３の垂直断面を四角形にしたものであり
、第４図に示すのは、中間部材２ｂを下部になるほど外
径が小さくなるようにした上、コイルの断面を台形状に
したものである。これらのいずれでも第１図に示す装置
と同等の効果を発揮させることができる。In the case shown in FIG. 3, the upper part of the intermediate member 2b is thinner than the lower part, and the vertical cross section of the induction coil 3 is square. In the case shown in FIG. In addition, the cross section of the coil is made trapezoidal. Any of these can produce the same effect as the device shown in FIG.
以下、実施例により本発明の装置の使用方法とその効果
を具体的に説明する。EXAMPLES Hereinafter, the method of using the apparatus of the present invention and its effects will be specifically explained with reference to Examples.
（実施例）
第１図に示した装置を用いてチタンインゴットを製造し
その純度と表面性状を調べた。(Example) A titanium ingot was manufactured using the apparatus shown in FIG. 1, and its purity and surface properties were examined.
るつぼ２は、内径６０ｍｍ、外径１０ｋｍ、高さ１８０
ｍｍの銅製である。その上部部材２ａは、排水口２ｄを
もつ高さ５抛−の中空体で冷却水が通過するようになっ
ている。中間部材２ｂはその中間の位置に窪みを有し、
幅０．２層屡のスリット２ｈ（その中には耐火物が充填
されている）で分割された８個のセクター２ｇからなり
、その全体寸法は、内径６０−■、外径１０〇−■、高
さ５０ｍｍ （ただし窪み部の外径は８０＋ｗｍ）であ
る。Crucible 2 has an inner diameter of 60 mm, an outer diameter of 10 km, and a height of 180 mm.
Made of mm copper. The upper member 2a is a hollow body with a height of 5 mm and has a drain port 2d through which cooling water passes. The intermediate member 2b has a recess at an intermediate position,
It consists of 8 sectors 2g divided by slits 2h with a width of 0.2 layers (inside of which is filled with refractory material), and its overall dimensions are 60 mm in inner diameter and 100 mm in outer diameter. , height 50mm (however, the outer diameter of the recessed portion is 80+wm).
各セクター２ｇには上部部材２ａおよび下部部材２Ｃを
連絡する直径３１の冷却水路２ｆがあり、下部部材２ｃ
は給水口２ｅをもつ外径２００ＩＩｌｌＩの鍔を備えた
高さ８０ｔａｔｎの中空体で、内部を冷却水が通るよう
になっている。またこのるつぼ２にはチャンバー１を貫
通してるつぼの内側に開口した直径１ｍｍの気体供給用
管６が設けられている。Each sector 2g has a cooling water channel 2f with a diameter of 31 connecting the upper member 2a and the lower member 2C, and the lower member 2c
is a hollow body having a height of 80 tatn and equipped with a flange having an outer diameter of 200 IIllI and a water supply port 2e, through which cooling water passes. Further, this crucible 2 is provided with a gas supply pipe 6 having a diameter of 1 mm and opening inside the crucible through the chamber 1.
誘導コイル３は、肉厚５ｍｍ、高さ３０ｍｍ、平均直径
１２０ｍｌ１１で、内側長辺がるつぼ側に膨出した鋼管
であり、内部を冷却水が通過するようになっている。ま
たるつぼ２の上方にはチタン母材を供給する振動フィー
ダ４が設けられ、るつぼ２の下方には鋳造されたチタン
インゴ・ントを連続的に引き下ろす引き抜き棒５が配置
されている。The induction coil 3 is a steel tube with a wall thickness of 5 mm, a height of 30 mm, and an average diameter of 120 ml11, with its inner long side bulging toward the crucible, and cooling water passes through the inside. Further, a vibrating feeder 4 for supplying a titanium base material is provided above the crucible 2, and a drawing rod 5 is arranged below the crucible 2 to continuously pull down the cast titanium ingot.
融解および鋳造操作は次のように行った。Melting and casting operations were performed as follows.
まずチャンバー１内をＡｒガス雰囲気にした後、引き抜
き棒５をるつぼ２内に挿入し、引き抜き棒の上端に取り
付けたチタン母材をその上部が誘導コイル３の高さの中
程に位置するように装入した。First, after creating an Ar gas atmosphere in the chamber 1, the drawing rod 5 is inserted into the crucible 2, and the titanium base material attached to the upper end of the drawing rod is placed so that its upper part is located in the middle of the height of the induction coil 3. It was loaded into
そして誘導コイル３に１５０ｋｗの高周波電流値を流す
とともに気体供給管６から１０〜１００ ｌ／ｗｉｎの
冷却用Ａｒガスを供給しつつ融解した。溶融チタンの頂
部が誘導コイルの上部に相当する位置に達したとき、引
き抜き棒５を１．６ｃ＋＊／ａ＋ｉｎの速度で下降する
と同時に振動フィーダ６から２００ｇ／＋ｉｉｎでチタ
ン母材を供給した。このような操作を３６分間行い、直
径５８１Ｉ１１、長さ５７６１、重ｉ１６．５ｋｇのイ
ンゴット“を製造した。このチタンインゴットの化学組
成を調べた結果、酸素２．０００ｐｐｍ、炭素２３０ｐ
帥、窒素１１０５ｐｐ、 ｗ４２０ρρｍ以下、残部が
チタンで非常に純度の高いものであった６また表面性状
もきわめて良好であった。Then, a high frequency current of 150 kW was passed through the induction coil 3, and cooling Ar gas was supplied from the gas supply pipe 6 at a rate of 10 to 100 l/win to melt the material. When the top of the molten titanium reached a position corresponding to the upper part of the induction coil, the drawing rod 5 was lowered at a speed of 1.6 c++/a+in, and at the same time the titanium base material was fed from the vibrating feeder 6 at 200 g/+iin. This operation was carried out for 36 minutes to produce an ingot with a diameter of 581 I11, a length of 5761 mm, and a weight of I16.5 kg.The chemical composition of this titanium ingot was investigated and found to be 2.000 ppm of oxygen and 230 ppm of carbon.
It had a very high purity with nitrogen content of 1105 ppp, w of 420 ρρm or less, and the remainder being titanium6.The surface quality was also very good.
（発明の効果）
本発明の装置を用いれば、スラグ剤を使用することなく
金属の融解および鋳造ができる。したがってスラグによ
る汚染その他の問題がなくなり、高純度で表面性状の良
好なインゴットが製造できる。(Effects of the Invention) By using the apparatus of the present invention, metal can be melted and cast without using a slag agent. Therefore, problems such as contamination due to slag are eliminated, and ingots with high purity and good surface quality can be produced.
第１図（ａ）は、本発明の装置の１例を示す縦断面図、
第１図山）は、そのＡ−Ａ矢視水平断面図、第２図、第
３図および第４図は、本発明装置の他の例を示す縦断面
図、
第５図（ａ）は、従来の冷却式るつぼを備えた連続鋳造
装置の概略断面図、第５図（ｂ）はその要部縦断面図、
である。
ｌ：チャンバー
２：るつぼ、
２ａ：るつぼの上部部材、２ｂ＝中間部材、２ｃ：下部
部材、 ２ｄ：排水口、２ｅ：給水口、
２ｆ：冷却水通路、２ｇ：セクター ２ｈニ
スリツト、２１：窪み、
３：誘導コイル、 ３ａ：リード線、：振動フィー
ダ、
：引き抜き棒、
：気体供給管。FIG. 1(a) is a longitudinal sectional view showing an example of the device of the present invention,
1) is a horizontal sectional view taken along the line A-A, FIGS. 2, 3, and 4 are longitudinal sectional views showing other examples of the device of the present invention, and FIG. , a schematic cross-sectional view of a continuous casting apparatus equipped with a conventional cooling crucible, and FIG. 5(b) is a longitudinal cross-sectional view of the main part thereof.
It is. l: Chamber 2: Crucible, 2a: Upper member of crucible, 2b = Intermediate member, 2c: Lower member, 2d: Drain port, 2e: Water supply port,
2f: Cooling water passage, 2g: Sector 2h Nislit, 21: Hollow, 3: Induction coil, 3a: Lead wire, : Vibration feeder, : Pull rod, : Gas supply pipe.
Claims (2)
うに配置された誘導コイルと、鋳造される金属を支持す
る引き抜き棒と、上記のすべてを大気から遮断するチャ
ンバーとを有し、前記るつぼは、その壁が高さ方向の少
なくとも一部において単数または複数のスリットで分割
されており、このスリットで分割される各セクターには
冷却媒体の流通路があり、しかもチャンバーの外からる
つぼの内側に気体を導入する気体供給用管を有すること
を特徴とする金属の溶解と連続鋳造のための装置。(1) having an electrically conductive crucible, an induction coil arranged to surround the crucible, a draw rod for supporting the metal to be cast, and a chamber for shielding all of the above from the atmosphere; The crucible has walls that are divided at least in part in the height direction by one or more slits, each sector divided by the slits has a cooling medium flow path, and the crucible is not connected to the chamber from outside the chamber. An apparatus for metal melting and continuous casting, characterized by having a gas supply pipe for introducing gas into the inside.
し上の溶融金属の温度を高める手段を備えることを特徴
とする請求項（１）の装置。(2) The apparatus according to claim 1, further comprising means for increasing the temperature of the molten metal slightly above the position where the gas supply pipe opens into the inner wall of the crucible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1869490A JPH03226338A (en) | 1990-01-29 | 1990-01-29 | Apparatus for melting and continuously casting metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1869490A JPH03226338A (en) | 1990-01-29 | 1990-01-29 | Apparatus for melting and continuously casting metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03226338A true JPH03226338A (en) | 1991-10-07 |
Family
ID=11978735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1869490A Pending JPH03226338A (en) | 1990-01-29 | 1990-01-29 | Apparatus for melting and continuously casting metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03226338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716881A (en) * | 2017-10-11 | 2018-02-23 | 南通聚星铸锻有限公司 | A kind of light-alloy magnetic ultrasound integrated casting and rolling device and method |
| CN116399125A (en) * | 2023-03-10 | 2023-07-07 | 华中科技大学 | Device for continuous induction smelting of metal cast ingot and application thereof |
-
1990
- 1990-01-29 JP JP1869490A patent/JPH03226338A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716881A (en) * | 2017-10-11 | 2018-02-23 | 南通聚星铸锻有限公司 | A kind of light-alloy magnetic ultrasound integrated casting and rolling device and method |
| CN116399125A (en) * | 2023-03-10 | 2023-07-07 | 华中科技大学 | Device for continuous induction smelting of metal cast ingot and application thereof |
| CN116399125B (en) * | 2023-03-10 | 2023-12-05 | 华中科技大学 | Device for continuous induction smelting of metal cast ingot and application thereof |
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