JPS60250860A - Continuous casting method of active molten metal - Google Patents
Continuous casting method of active molten metalInfo
- Publication number
- JPS60250860A JPS60250860A JP10912584A JP10912584A JPS60250860A JP S60250860 A JPS60250860 A JP S60250860A JP 10912584 A JP10912584 A JP 10912584A JP 10912584 A JP10912584 A JP 10912584A JP S60250860 A JPS60250860 A JP S60250860A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- mold
- ingot
- metal
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/118—Refining the metal by circulating the metal under, over or around weirs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、活性金属溶湯の連続鋳造法に係り、特にＡβ
−Ｌｉ合金を代表とする活性金属の溶湯表面に形成され
る酸化物の生成を抑制し、良好な連鋳塊を得る方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuous casting of active metal molten metal, and particularly to a continuous casting method for active metal molten metal.
The present invention relates to a method for suppressing the formation of oxides formed on the surface of a molten metal of an active metal, typified by a -Li alloy, and obtaining a good continuous ingot.
従来から、Ａβ、Ａ４合金等の金属の鋳塊を連続的に得
るために、連続鋳造法（半連続鋳造法を含む）と称され
る多数の提案が為されている。その代表的な例は、米国
特許第２９８３９７２号明細書等に示される如く、昇降
可能な鋳型底を所定の筒状鋳型の底部に位置せしめて、
該鋳型の一方の開口部を塞ぎ、そして該鋳型内に金属溶
湯をノズル、フロートを通じて供給する一方、順次、鋳
型底を降下させることにより、鋳型内部の流路を流通す
る冷却剤（通常は水）による鋳型内壁の冷却と、鋳型底
部（下端）のスリットより流出せしめられる冷却剤によ
る直接の冷却に基づいて、鋳型内に形成される溶湯柱を
凝固せしめ、そしてその凝固した鋳塊を鋳型底部の開口
部から連続的に取り出すことにより、所定の鋳塊を得て
いる。Conventionally, many proposals called continuous casting methods (including semi-continuous casting methods) have been made in order to continuously obtain ingots of metals such as Aβ and A4 alloys. A typical example is as shown in U.S. Pat.
One opening of the mold is closed, and molten metal is supplied into the mold through a nozzle and a float, while the bottom of the mold is sequentially lowered to cool a coolant (usually water) flowing through the channels inside the mold. ) and direct cooling by the coolant flowing out from the slit at the bottom (lower end) of the mold, the molten metal column formed in the mold is solidified, and the solidified ingot is poured into the bottom of the mold. A predetermined ingot is obtained by continuously taking out the ingot from the opening.
一方、Ａ ｊ２−Ｌ ｉ合金のように、活性で、大気中
での溶解、鋳造が難しい、活性な金属溶湯の場合にあっ
ては、かがる直接冷却鋳型を用いる連続鋳造手法がその
まま適用し得す、そのために該直接冷却鋳型の上方空間
をカバーで囲い、その内部をＡｒ等の不活性ガスで雰囲
気置換した状態において、目的とする連鋳環を製造する
ようにしている。このようにすれば、活性な金属溶湯と
空気との接触が効果的に抑制され、それらの間の反応が
回避せしめられることとなる。On the other hand, in the case of active molten metals such as Aj2-L i alloy, which are difficult to melt and cast in the atmosphere, the continuous casting method using a direct cooling mold can be applied as is. Therefore, the space above the direct cooling mold is surrounded by a cover, and the target continuous casting ring is manufactured in a state where the atmosphere inside the mold is replaced with an inert gas such as Ar. In this way, contact between the active molten metal and air can be effectively suppressed, and reactions between them can be avoided.
しかしながら、このような活性金属溶湯の従来からの連
続鋳造法にあっては、該金属溶湯の凝固収縮に基づいて
、鋳型と鋳塊との間で形成されるエアギャップが存在し
、そのエアギャップを通じて、下部の冷却剤（水）の蒸
気が鋳型上部の溶湯湯面空間に侵入して、溶湯表面上で
その蒸気（水蒸気）と溶湯とが反応する問題があり、そ
してそのために溶湯表面上に反応生成物が次第に厚く形
成される現象が惹起されている。また、鋳型内の水蒸気
分圧が高くなると、ガス吸収し易い金属溶湯の場合にあ
っては、溶湯表面からの著しいガス吸収が起こり、得ら
れる鋳塊の品質が劣化する問題も内在しているのである
。なお、これらの問題を防止するには、多量の不活性ガ
スを金型上方に形成された密閉空間内に流して、そのよ
うな空間を加圧状態下と為し、エアギャップがらその供
給された不活性ガスを排気する手法が考えられるが、こ
の対策では、不活性ガスの消費量が著しく多くなり、こ
れが鋳造コストを高めることとなる。However, in the conventional continuous casting method of active metal molten metal, there is an air gap formed between the mold and the ingot based on the solidification shrinkage of the molten metal. There is a problem that the vapor of the coolant (water) at the bottom enters the molten metal surface space at the top of the mold, and the vapor (steam) and the molten metal react on the molten metal surface, and therefore, the vapor on the molten metal surface A phenomenon occurs in which the reaction product gradually becomes thicker. Furthermore, when the partial pressure of water vapor in the mold increases, in the case of molten metals that easily absorb gas, significant gas absorption occurs from the surface of the molten metal, which also poses the inherent problem of deteriorating the quality of the resulting ingot. It is. In order to prevent these problems, a large amount of inert gas is flowed into the closed space formed above the mold, the space is pressurized, and the air gap is filled with the inert gas. A possible method is to exhaust the inert gas, but this measure significantly increases the amount of inert gas consumed, which increases casting costs.
ここにおいて、本発明は、かがる事情を背景にして為さ
れたものであって、その目的とするとこは、Ａ ｊ２−
Ｌ ｉ合金を代表とする活性金属の連続鋳造方法にお
いて、ｆｇ湯表面に形成される酸化物の生成を抑制し、
良好な連鋳環を得ることのできる有効な手法を提供する
ことにある。Here, the present invention has been made against the background of the above circumstances, and its purpose is to achieve A j2-
In the continuous casting method of active metals represented by Li alloy, the generation of oxides formed on the surface of fg hot water is suppressed,
The object of the present invention is to provide an effective method by which a good continuously cast ring can be obtained.
そして、この目的を達成するめに、本発明にあっては、
活性金属溶湯を直接冷却鋳型に供給して、冷却凝固せし
めることにより、所定の鋳塊を連続的に鋳造するにあた
り、該鋳型の前記金属溶湯の冷却凝固部位よりも上流側
に、該溶湯を取り囲むように断熱部材を配置して、供給
される前記金属溶湯の溶湯柱を、該断熱部材にて形成せ
しめると共に、該鋳型内に導かれる金属溶湯の湯面上方
の空間を密閉された空間と為し、該空間に所定の不活性
ガスを充満させて、該金属溶湯と空気との接触を回避す
るようにしたのである。In order to achieve this objective, the present invention includes:
When continuously casting a predetermined ingot by supplying active metal molten metal directly to a cooling mold and letting it cool and solidify, surrounding the molten metal at an upstream side of the cooling and solidifying part of the molten metal in the mold. A heat insulating member is arranged so that a column of the molten metal to be supplied is formed by the heat insulating member, and the space above the surface of the molten metal led into the mold is made into a sealed space. However, the space is filled with a predetermined inert gas to avoid contact between the molten metal and air.
従って、このような本発明手法によれば、溶湯の凝固収
縮によって、鋳型内面と形成される鋳塊との間にエアギ
ャップが形成されても、かかる鋳型への溶湯供給側には
、断熱部材で取り囲まれた／８湯柱が形成されて、かか
るエアギャップと該溶湯柱の上方湯面とが離隔されてい
るところから、直接冷却鋳型から鋳塊に対して噴出せし
められる冷却水等の蒸気が鋳型内の溶湯湯面上方に侵入
するようなことが全くなく、それ故に水蒸気との反応が
効果的に抑制され得て、溶湯表面が清浄化される（反応
生成物が少ない）ため、得られる鋳塊表面が効果的に改
善され得るのである。しかも、有害ガス（Ｈ２）の吸収
がなくなり、鋳塊内部の巣欠陥、水素ガス量が低減する
等の利益を享受し得る他、鋳塊の面前量が低減され得て
、製品歩留りが向上せしめられ得ることとなったのであ
る。Therefore, according to the method of the present invention, even if an air gap is formed between the inner surface of the mold and the formed ingot due to solidification shrinkage of the molten metal, a heat insulating member is provided on the side where the molten metal is supplied to the mold. Steam such as cooling water is directly jetted from the cooling mold to the ingot from where a molten metal column surrounded by /8 is formed and the air gap and the upper surface of the molten metal column are separated. There is no possibility that the molten metal will penetrate above the surface of the molten metal in the mold, so the reaction with water vapor can be effectively suppressed, and the molten metal surface will be cleaned (less reaction products). The surface of the ingot can be effectively improved. Moreover, absorption of harmful gas (H2) is eliminated, and in addition to enjoying benefits such as a reduction in nest defects and the amount of hydrogen gas inside the ingot, the surface amount of the ingot can be reduced, which improves product yield. This meant that it was possible for him to do so.
加えて、かかる本発明手法に従えば、断熱部材にて形成
される溶湯柱の上方の密閉空間内には、所定の不活性ガ
スが該空間を充満し得るだけの供給量において供給され
れば足り、鋳型下部のエアギャップ側に該不活性ガスが
排気される程の量において供給する必要がないところか
ら、使用される不活性ガス量も少なく、従って高価な不
活性ガス（Ｈｅ）の使用も経済的に可能となったのであ
る。In addition, according to the method of the present invention, a predetermined inert gas is supplied in an amount sufficient to fill the space in the sealed space above the molten metal column formed by the heat insulating member. Since there is no need to supply the inert gas to the air gap side at the bottom of the mold in such an amount that it is exhausted, the amount of inert gas used is small, and therefore the use of expensive inert gas (He) is avoided. has also become economically possible.
かくの如き、Ａｊ２−Ｌｉ系合金を代表とする活性な金
属の有利な造塊手法の更に具体的な幾つかの例が、図面
に示されており、それらの図面を参照しつつ、本発明の
内容を更に明らかにすることとする。Several more specific examples of advantageous methods for forming active metals such as Aj2-Li alloys are shown in the drawings, and the present invention will be described with reference to these drawings. We will further clarify the contents.
まず、第１図において、２は、筒状の直接水冷鋳型であ
り、その内部に設けられた水室４内を流通せしめられた
冷却水が、その下部の噴出口６がら、形成される鋳塊８
に向かって噴出せしめられるようになっている。また、
この鋳型２上には、鋳型の内面より突゛き出たオーバー
ハング部を形成するように、耐火性の筒状の断熱受槽１
ｏが設けられており、そしてこの断熱受槽１ｏに対して
、水平方向に樋１２が接続されて、図示しない保持炉等
から、Ａｊ！−Ｌｉ合金等の所定の活性金属溶湯１４が
、かかる筒状断熱受槽１０内に水平方向から供給せしめ
られるようになっているのである。First, in FIG. 1, reference numeral 2 denotes a cylindrical direct water-cooled mold, and cooling water flowing through a water chamber 4 provided inside the mold flows through a spout 6 at the bottom of the mold to be formed. Lump 8
It is designed so that it can be ejected towards the enemy. Also,
A refractory cylindrical heat insulating tank 1 is placed on the mold 2 so as to form an overhang protruding from the inner surface of the mold.
A gutter 12 is connected horizontally to the insulated receiving tank 1o, and Aj! A predetermined active metal molten metal 14 such as -Li alloy is supplied into the cylindrical heat-insulated receiving tank 10 from a horizontal direction.
従って、かかる樋１２を通じて、水平方向から筒状の断
熱受槽１０内に導かれた金属溶湯１４は、該断熱受槽１
０にて所定高さの溶湯柱を金属の凝ｆｉ１層（８）の上
に、換言すればその上流側に形成することとなる。Therefore, the molten metal 14 guided from the horizontal direction into the cylindrical heat-insulated receiving tank 10 through the gutter 12 flows into the heat-insulated receiving tank 1.
At 0, a molten metal column of a predetermined height is formed on the precipitated metal fi1 layer (8), in other words, on the upstream side thereof.
また、樋１２から断熱受槽１０への溶湯流入口部位には
、該受槽１０にて形成される溶湯柱の湯面と供給される
金属溶湯１４の湯面とを仕切るように、耐火性の仕切板
１６が設けられており、この仕切板１６によって、保持
炉等の溶湯供給装置から持ち込まれ、或いはその供給途
上において空気などと反応して生じた反応生成物、ドロ
ス等の湯面上の浮遊物１８が、鋳型２内に流れ込まない
ようになっている。In addition, a fire-resistant partition is provided at the inlet portion of the molten metal from the gutter 12 to the insulated receiving tank 10 so as to separate the surface of the molten metal column formed in the receiving tank 10 from the surface of the molten metal 14 supplied. A plate 16 is provided, and this partition plate 16 prevents reaction products, dross, etc. floating on the surface of the molten metal brought in from a molten metal supply device such as a holding furnace, or generated by reaction with air etc. during the molten metal supply process. The material 18 is prevented from flowing into the mold 2.
そして、この断熱受槽１０及び樋１２上の空間を密閉さ
れた空間と為すカバー２０が設けられており、このカバ
ー２０に接続された供給パイプ２２から、Ａ ｒ ％
Ｈｅ等の不活性ガスが供給されることによって、該カバ
ー２０にて形成された密閉空間２４内に、該不活性ガス
が充満せしめられ、供給される金属溶湯１４の表面が大
気から遮断せしめられるようになっており、これによっ
てかかる活性な金属溶湯１４と空気との反応、更には大
気中に含まれる水分等との反応が阻止されるようになっ
ている。A cover 20 is provided to make the space above the heat-insulated receiving tank 10 and the gutter 12 a sealed space, and from the supply pipe 22 connected to this cover 20, A r %
By supplying an inert gas such as He, the sealed space 24 formed by the cover 20 is filled with the inert gas, and the surface of the supplied molten metal 14 is shielded from the atmosphere. This prevents the active molten metal 14 from reacting with air, and furthermore, with moisture contained in the atmosphere.
従って、このような構造の装置を用いて、ＡＮ−Ｌｉ合
金等の活性な金属溶湯１４を連続鋳造した場合において
、鋳型２内の凝固鋳塊８上には、高い静水圧の溶湯柱が
形成されることとなり、これによって、鋳型２内壁と鋳
塊８との間に形成されるエアギャップを通じて、該鋳型
２の噴出口６から鋳塊８に向かって噴出された冷却水の
蒸気が、上方の溶湯１４中に侵入するのが効果的に抑制
せしめられ、それ故に７ｇ湯湯引４水蒸気とが反応して
、１１８湯表面上に反応生成物を発生せしめることも防
止され、以て得られる鋳塊８の表面状態が効果的に改善
され得ることとなったのである。Therefore, when an active metal molten metal 14 such as AN-Li alloy is continuously cast using a device having such a structure, a column of molten metal with high hydrostatic pressure is formed on the solidified ingot 8 in the mold 2. As a result, the steam of the cooling water jetted from the spout 6 of the mold 2 toward the ingot 8 is directed upward through the air gap formed between the inner wall of the mold 2 and the ingot 8. Intrusion into the molten metal 14 is effectively suppressed, and therefore 7g of molten metal 118 is prevented from reacting with water vapor and generating reaction products on the surface of the molten metal 118. The surface condition of the ingot 8 can be effectively improved.
また、カバー２０にて形成される密閉空間２４内に供給
される不活性ガスも、かかる密閉空間２４を充満せしめ
るだけの量で足り、鋳型２と鋳塊８との間のエアギャッ
プから排気されるように、圧力をかけて供給せしめる必
要がないところから、その使用量も少なく為し得、従っ
て高価な不活性ガスである）ｌｅも有利に使用され得る
こととなったのである。Further, the amount of inert gas supplied into the sealed space 24 formed by the cover 20 is sufficient to fill the sealed space 24, and the inert gas is exhausted from the air gap between the mold 2 and the ingot 8. Since there is no need to apply pressure to supply the gas, the amount used can be reduced, and therefore the expensive inert gas (le) can also be used advantageously.
そして、この第１図に示した装置にあっては、仕切板１
６にて溶湯１４表面上の反応生成物やドロス等（１８）
が、断熱受槽１０内の溶湯柱湯面上に流れ込まないよう
になっているところから、そのような浮遊物１８が形成
される鋳塊８中に巻き込まれる虞もなく、その品質が高
められ得ることとなった他、水平方向から該断熱受槽１
０内に所定の金属溶＠１４が供給されるものであるため
に、鋳込み用の樋１２とカバー２０とを連結させて、保
持炉等の溶湯供給装置の出湯口以降における不活性ガス
雰囲気下での溶湯供給が容易となったのであり、しかも
そのような段差のない溶湯供給方式によって、凝固形成
される鋳塊８中への反応生成物、ドロス等の浮遊物１８
の巻込みも効果的に抑制し得ることとなったのである。In the device shown in FIG. 1, the partition plate 1
In step 6, reaction products, dross, etc. on the surface of the molten metal 14 (18)
However, since the molten metal does not flow onto the surface of the molten metal column in the insulated receiving tank 10, there is no risk that such floating objects 18 will be caught up in the formed ingot 8, and its quality can be improved. In addition, the insulation tank 1 was viewed from the horizontal direction.
Since a predetermined amount of molten metal @ 14 is to be supplied into the tank, the casting gutter 12 and the cover 20 are connected to each other under an inert gas atmosphere after the outlet of a molten metal supply device such as a holding furnace. In addition, this method of supplying molten metal without steps prevents floating matter 18 such as reaction products and dross from entering the solidified ingot 8.
It was also possible to effectively suppress the entrainment of
また、第２図に示される本発明を実施するに好適な装置
は、上側の垂直方向に鋳造を行なう方式とは異なり、水
平方向に鋳塊８を取り出す水平連続鋳造方式と称される
ものであって、そこでは、直接水冷鋳型４はその軸心が
水平方向となるように設けられているのである。Further, the apparatus shown in FIG. 2 suitable for carrying out the present invention is a so-called horizontal continuous casting method in which the ingot 8 is taken out in the horizontal direction, unlike the method in which casting is performed in the vertical direction on the upper side. In this case, the direct water-cooled mold 4 is installed so that its axis is in the horizontal direction.
そして、この水平方向に設けられた直接水冷鋳型２の入
口部分に断熱受槽１０が設けられて、かかる鋳型２の上
流側に所定の溶湯柱が上下方向に形成されるようになっ
ている。A heat-insulating receiving tank 10 is provided at the entrance of the direct water-cooled mold 2 provided in the horizontal direction, so that a predetermined column of molten metal is formed in the vertical direction on the upstream side of the mold 2.
従って、このような構造の水平連続鋳造装置を用いた活
性金属溶湯１４の鋳造操作にあっても、鋳型２の上流側
には、前例と同様に所定の静水圧の／８湯柱が形成され
るものであるところから、かかる鋳型２の内壁面と形成
される鋳塊８との間に形成されるエアギャップから冷却
水の蒸気が金属／８湯ｚ側に侵入するのが効果的に抑制
され得、以て上潮の装置と同様な利益を享受し得るので
ある。Therefore, even in the casting operation of the active metal molten metal 14 using the horizontal continuous casting apparatus having such a structure, a /8 molten metal column with a predetermined hydrostatic pressure is formed on the upstream side of the mold 2, as in the previous example. Therefore, it is effectively suppressed that the cooling water vapor enters the metal/molten metal z side from the air gap formed between the inner wall surface of the mold 2 and the ingot 8 to be formed. Therefore, it is possible to enjoy the same benefits as the upstream device.
さらに、第３図に示される装置は、特開昭５３−１６３
２３号公報や特開昭５８−１９６１４６号公報等におい
て本願出願人が明らかにしたように、直接水冷鋳型２の
内壁面に断熱シート（断熱部材）２６を配置して、この
断熱シート２６にて該鋳型２内に所定の溶湯柱が形成さ
れるようにしたものであって、このような構造において
本発明を実施しても、従来法よりは優れた鋳塊を得るこ
とが可能である。なお、この実施例においては、活性な
金属溶湯１４は、ノズル２８及びフロート３０を介して
供給されることとなる。Furthermore, the device shown in FIG.
As disclosed by the applicant in JP-A No. 23, JP-A-58-196146, etc., a heat insulating sheet (insulating member) 26 is placed directly on the inner wall surface of the water-cooled mold 2, and this heat insulating sheet 26 A predetermined column of molten metal is formed in the mold 2, and even if the present invention is implemented in such a structure, it is possible to obtain an ingot that is better than the conventional method. In this embodiment, the active molten metal 14 is supplied via the nozzle 28 and the float 30.
なお、本発明は、かかる例示の具体例にのみ限定して解
釈されるものでは決してなく、本発明の趣旨を逸脱しな
い限りにおいて、当業者の知識に基づいて種々なる変更
、修正、改良等を加え得るものであって、本発明はその
ような実施形態のものをも含むものであること、言うま
でもないところである。It should be noted that the present invention is by no means to be construed as being limited only to these specific examples, and various changes, modifications, improvements, etc. can be made based on the knowledge of those skilled in the art without departing from the spirit of the present invention. It goes without saying that the present invention also includes such embodiments.
また、上述した本発明の優れた特徴を明らかにするため
に、以下に実施例を示すが、本発明が、また、この実施
例によって制約を受けるものでないこと、言うまでもな
いところである。Further, in order to clarify the excellent features of the present invention described above, Examples are shown below, but it goes without saying that the present invention is not limited by these Examples.
実施例
ＡＪ−１％Ｌｉ、ＡＡ−３％Ｌｉ、、ＡＪ２−４％Ｍｇ
−１％Ｌｉの３種の活性金属溶湯を用いて、それぞれ厚
み：２５Ｑｍ＋＋、幅：５０Ｑｍｉの小型角形鋳塊を、
第１図に示される鋳型装置を用いて、Ａｒ流量：１００
Ａ／分、鋳造速度：６０＋ｕ／分、水量：１０．０ｆｆ
ｉ／分の鋳造条件にて造塊した。また、比較のために、
同じ合金溶湯を用いて、同様な鋳造条件下に、従来手法
（第３図の装置において断熱シート２６のない構造のも
のを使用）にて造塊した。そして、本発明手法及び従来
法にて得られた、それぞれの鋳塊の鋳塊表面、内部品質
について調査し、その結果を下記第１表に示した。Example AJ-1%Li, AA-3%Li, AJ2-4%Mg
- Using three types of active metal molten metals of 1% Li, a small square ingot with a thickness of 25Qm++ and a width of 50Qmi was made.
Using the mold apparatus shown in Fig. 1, Ar flow rate: 100
A/min, casting speed: 60+u/min, water amount: 10.0ff
The ingot was formed under casting conditions of i/min. Also, for comparison,
Using the same molten alloy, ingots were formed by a conventional method (using the apparatus shown in FIG. 3 without the heat insulating sheet 26) under similar casting conditions. Then, the ingot surface and internal quality of each ingot obtained by the method of the present invention and the conventional method were investigated, and the results are shown in Table 1 below.
かかる第１表の結果から明らかなように、従来法に対し
て、本発明手法に従って得られたＡβ−Ｌｉ系合金鋳塊
は、鋳塊表面の特性において著しく優れており、また有
害ガス（Ｈ２）の吸収がないところから、鋳塊内部の巣
欠陥も著しく改善されており、水素ガス含量の低減され
た、品質の良好なものであった。As is clear from the results in Table 1, the Aβ-Li alloy ingot obtained according to the method of the present invention has significantly superior ingot surface properties and is free from harmful gases (H2 ), there was no absorption of the ingot, and the defects inside the ingot were also significantly improved, and the ingot was of good quality with a reduced hydrogen gas content.
第１図、第２図及び第３図はそれぞれ本発明を実施する
に好適な連続鋳造装置の異なる例を示す断面説明図であ
る。
２：直接水冷鋳型 ８：鋳塊
１０：断熱受槽 １２：樋
１４：活性金属溶湯
１６：仕切板 １８：浮遊物
２０：カバ−２２：供給パイプ
２４：密閉空間 ２６：断熱シート
出願人 住友軽金属工業株式会社FIGS. 1, 2, and 3 are cross-sectional explanatory views showing different examples of continuous casting apparatus suitable for carrying out the present invention, respectively. 2: Direct water cooling mold 8: Ingot 10: Insulation receiving tank 12: Gutter 14: Active metal molten metal 16: Partition plate 18: Floating objects 20: Cover 22: Supply pipe 24: Closed space 26: Insulation sheet applicant Sumitomo Light Metal Industries, Ltd. Co., Ltd.
Claims (3)
凝固せしめることにより、所定の鋳塊を連続的に鋳造す
るにあたり、該鋳型の前記金属溶湯の冷却凝固部位より
も上流側に、該溶湯を取り囲むように断熱部材を配置し
て、供給される前記金属溶湯の溶湯柱を、該断熱部材に
て形成せしめると共に、該鋳型内に導かれる金属溶湯の
湯面上方の空間を密閉された空間と為し、該空間内に所
定の不活性ガスを充満させて、該金属溶湯と空気との接
触を回避するようにしたことを特徴とする活性金属溶湯
の連続鋳造法。(1) When continuously casting a predetermined ingot by directly supplying the active metal molten metal to a cooling mold and cooling and solidifying it, the activated metal molten metal is placed upstream of the cooling and solidifying part of the molten metal in the mold. A heat insulating member is arranged to surround the molten metal so that a column of the molten metal to be supplied is formed by the heat insulating member, and a space above the surface of the molten metal led into the mold is sealed. 1. A continuous casting method for active molten metal, characterized in that the space is filled with a predetermined inert gas to avoid contact between the molten metal and air.
が形成されるように、水平方向から供給せしめられる特
許請求の範囲第１項記載の活性金属溶湯の連続鋳造法。(2) The continuous casting method of active metal molten metal according to claim 1, wherein the molten metal is supplied horizontally so that a predetermined molten metal column is formed in the heat insulating member.
に対して、耐火性仕切板にて仕切られている特許請求の
範囲第２項記載の活性金属溶湯の連続鋳造法。(3) The continuous casting method of active metal molten metal according to claim 2, wherein the molten metal column is separated from the surface of the supplied molten metal by a refractory partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10912584A JPS60250860A (en) | 1984-05-29 | 1984-05-29 | Continuous casting method of active molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10912584A JPS60250860A (en) | 1984-05-29 | 1984-05-29 | Continuous casting method of active molten metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60250860A true JPS60250860A (en) | 1985-12-11 |
Family
ID=14502192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10912584A Pending JPS60250860A (en) | 1984-05-29 | 1984-05-29 | Continuous casting method of active molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60250860A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4930566A (en) * | 1988-09-24 | 1990-06-05 | Showa Denko Kabushiki Kaisha | Method for continuous casting of an aluminum-lithium alloy |
| US5232046A (en) * | 1990-01-22 | 1993-08-03 | Mesta International | Strand casting apparatus and method |
| JP2014506837A (en) * | 2011-02-18 | 2014-03-20 | コンステリウム フランス | Aluminum alloy semi-finished product with improved microporosity and manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194294A (en) * | 1981-05-25 | 1982-11-29 | Nippon Light Metal Co Ltd | Production of gray-colored expanded aluminum material |
-
1984
- 1984-05-29 JP JP10912584A patent/JPS60250860A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194294A (en) * | 1981-05-25 | 1982-11-29 | Nippon Light Metal Co Ltd | Production of gray-colored expanded aluminum material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4930566A (en) * | 1988-09-24 | 1990-06-05 | Showa Denko Kabushiki Kaisha | Method for continuous casting of an aluminum-lithium alloy |
| US5232046A (en) * | 1990-01-22 | 1993-08-03 | Mesta International | Strand casting apparatus and method |
| JP2014506837A (en) * | 2011-02-18 | 2014-03-20 | コンステリウム フランス | Aluminum alloy semi-finished product with improved microporosity and manufacturing method |
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