JP3270615B2 - Continuous casting mold structure of molten metal - Google Patents
Continuous casting mold structure of molten metalInfo
- Publication number
- JP3270615B2 JP3270615B2 JP05087594A JP5087594A JP3270615B2 JP 3270615 B2 JP3270615 B2 JP 3270615B2 JP 05087594 A JP05087594 A JP 05087594A JP 5087594 A JP5087594 A JP 5087594A JP 3270615 B2 JP3270615 B2 JP 3270615B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- continuous casting
- short side
- molten steel
- slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Continuous Casting (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融金属の連続鋳造鋳
型構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting mold structure for molten metal.
【０００２】[0002]
【従来の技術】例えば、鉄鋼の分野での矩形断面の鋳片
の連続鋳造では、図２に示すように、基本的には、鋳型
ａの短辺ｂは、鋳型上面側と下面側でほぼ同一寸法に形
成され、また長辺ｃは、鋳型上面側より下面側に向かっ
て僅かに内側に傾斜させた形状にしているため、上面側
が下面側より寸法が大きくなっているのが通例である。
近年、例えば鉄鋼の分野では、鋳造後の圧延工程を省略
できる連続鋳造が試みられており、厚みが１０〜７０mm
レベルのスラブ状の薄肉鋳片を連続鋳造する要請が高ま
ってきている。BACKGROUND ART For example, in the continuous casting of slabs of rectangular cross-section in the field of steel, as shown in FIG. 2, basically, the short side b of the mold a is substantially in a mold upper and lower side Since the long side c is formed to have the same size and is slightly inclined inward toward the lower surface side from the upper surface side of the mold, the upper surface side is generally larger in size than the lower surface side. .
In recent years, for example, in the field of iron and steel, continuous casting that can omit the rolling step after casting has been attempted, and the thickness is 10 to 70 mm.
There is an increasing demand for continuous casting of slab-like thin cast slabs.
【０００３】このように、薄肉鋳片を前記したように短
辺寸法が鋳型上面側と下面側で同一の鋳型を用いた場合
には、鋳型短辺を、鋳造するスラブ状鋳片の厚みに近似
の寸法にすることになり、鋳型内に溶湯を注入するノズ
ルを挿入する場合、注入特性、耐用性の確保の観点で設
定された通常の径（現状では、外径７０〜１５０mm，内
径３０〜８０mm）のノズルでは鋳型内に挿入することは
困難になったり、あるいは挿入できたとしても、適正配
置ができず、凝固シェルとノズル間の隙間が狭くなり、
湯流れ、凝固シェル生成の悪化を招き、鋳造の操業性の
低下とともに、鋳片に割れ等の欠陥を生じ鋳片の品質低
下は避けられない。[0003] As described above, when the same short side dimension of the thin cast slab is used on the upper side and the lower side of the mold as described above, the short side of the mold is reduced to the thickness of the slab-like slab to be cast. When the nozzle for injecting the molten metal is inserted into the mold, a normal diameter (in the present case, an outer diameter of 70 to 150 mm and an inner diameter of 30 to 150 mm, which is set in view of ensuring injection characteristics and durability) is set. or is difficult to the nozzles ～80Mm) inserted into the mold, or even can be inserted, you can not apply a positive distribution <br/> location, the gap between the solidified shell and the nozzle is narrowed,
The flow of molten metal and the formation of a solidified shell are deteriorated, and the operability of casting is reduced, and defects such as cracks are generated in the slab, so that the quality of the slab is inevitably reduced.
【０００４】また、注入ノズルの径を小さくすることが
考えられるが、前記したように注入特性（注入の安定
性）、耐用性（耐詰まり性、耐損傷性等）の低下を余儀
なくされ、鋳造の操業性の低下とともに鋳片の品質の低
下は避けられない。[0004] Further, it is conceivable to reduce the diameter of the injection nozzle. However, as described above, the injection characteristics (injection stability) and the durability (clogging resistance, damage resistance, etc.) have to be reduced, and casting is inevitable. It is inevitable that the quality of the slab decreases with the decrease in operability.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、溶湯注入ノ
ズルの径を通常レベルのものとして１０〜７０mmの厚み
の薄肉鋳片（薄スラブ）を連続鋳造できる溶融金属の連
続鋳造鋳型構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention provides a continuous casting mold structure for molten metal capable of continuously casting thin cast slabs (thin slabs) having a thickness of 10 to 70 mm with a normal diameter of a molten metal injection nozzle. The purpose is to do.
【０００６】[0006]
【課題を解決するための手段】本発明は、矩形断面の薄
肉鋳片を連続鋳造する溶融金属の連続鋳造装置の鋳型構
造において、鋳型短辺上部を上方に末広がりとなる形状
にし、かつこの鋳型短辺上部に溶融金属を浮揚させるた
めの誘導コイルを配設したことを特徴とする溶融金属の
連続鋳造鋳型構造である。 SUMMARY OF THE INVENTION The present invention is directed to a thin rectangular cross section.
Mold structure of continuous casting machine for molten metal for continuous casting of metal slabs
In the construction, the shape that the upper part of the short side of the mold spreads upward
And float the molten metal on the upper part of the short side of the mold.
Of molten metal characterized by the provision of an induction coil for
It has a continuous casting mold structure.
【０００７】[0007]
【作用】本発明においては、鋳型短辺の上部を上方に末
広がり形状にし、この短辺上部に対応する長辺上部を外
側に拡開しているので、鋳型における注入ノズル挿入部
を広くし、注入ノズルを最適条件で配置し溶湯の注入を
安定化することができ、短辺上部の末広がり部で凝固シ
ェルの生成を抑制するので、鋳片の引き出しも円滑にで
き、鋳造の操業性、鋳片の品質を安定確保することがで
きる。本発明は、特に１０〜７０mm厚の薄肉鋳片鋳片の
連続鋳造に適用して、より適性の高いもので、鉄鋼の
他、銅、アルミニウム等の金属を対象とした連続鋳造に
適用できるものである。According to the present invention, the upper portion of the short side of the mold is formed so as to diverge upward, and the upper portion of the long side corresponding to the upper portion of the short side is expanded outward. The injection nozzle is placed under optimal conditions to stabilize the injection of molten metal, and the formation of a solidified shell is suppressed at the flared portion at the upper part of the short side, so that the slab can be drawn out smoothly, casting operability, casting The quality of the pieces can be ensured stably. INDUSTRIAL APPLICABILITY The present invention is particularly applicable to continuous casting of thin cast slabs having a thickness of 10 to 70 mm, and is more suitable for continuous casting of metals such as copper and aluminum in addition to iron and steel. It is.
【０００８】[0008]
【実施例】（実施例１） 以下に本発明を図１（ａ）〜（ｄ）に示す実施例１に基
づいて説明する。この実施例１は、薄肉のスラブ状鋳片
を鋳造するための溶鋼の連続鋳造に適用した場合の例で
ある。(Embodiment 1) Hereinafter, the present invention will be described based on Embodiment 1 shown in FIGS. 1 (a) to 1 (d). The first embodiment is an example in which the present invention is applied to continuous casting of molten steel for casting a thin-walled slab-like cast piece.
【０００９】図１において、１は鋳型で、この鋳型内に
は、溶鋼注入ノズル２が配設されており、この注入ノズ
ル２の吐出口２ｏから溶鋼３が連続的に供給される。鋳
型内の溶鋼面には潤滑パウダー４が供給されている。鋳
型１内に供給された溶鋼３は、この鋳型１で冷却され、
所定寸法の薄肉のスラブ状鋳片３ｃとして連続的に取り
出される。In FIG. 1, reference numeral 1 denotes a mold, in which a molten steel injection nozzle 2 is provided, and molten steel 3 is continuously supplied from a discharge port 2o of the injection nozzle 2. A lubricating powder 4 is supplied to the molten steel surface in the mold. The molten steel 3 supplied into the mold 1 is cooled by the mold 1,
It is continuously taken out as a thin slab-shaped slab 3c of a predetermined size.
【００１０】この鋳型１は、冷却構造を有する銅板とそ
の背後に配設されたバックプレート（図示省略）等から
なる長辺５と、後述する誘導コイルを配設した短辺上部
６ａと冷却構造を有する銅板製の短辺下部６ｂからなる
短辺６とから構成されている。The casting mold 1 has a long side 5 composed of a copper plate having a cooling structure and a back plate (not shown) disposed behind the copper plate, an upper short side 6a provided with an induction coil described later, and a cooling structure. and a short side 6 that consists of copper made short side lower 6b having.
【００１１】上方に末広がりに形成された短辺上部６ａ
において、溶鋼の凝固シェル生成を抑制する手段とし
て、短辺上部に溶鋼を浮揚力（鋳型内方に対するピンチ
力）を付与する誘導コイル９を配設し、この短辺上部内
面と溶鋼面を曲面３ｒに形成してここでの溶鋼３を緩冷
却して凝固シェル生成を抑制するように構成したもので
ある。 ここで用いる誘導コイル９は、交流磁場を生成
し、鋳型１内上部で溶鋼３に対して鋳型１の内方に浮揚
力（ピンチ力）を付与する。短辺下部６ｂは通常条件で
冷却されるので、ここで溶鋼３が冷却され、溶鋼の凝固
シェル３ｓが生成される。An upper portion 6a of the short side formed to be widened upward.
A means to suppress the solidification shell formation of molten steel
, Lift the molten steel on the upper part of the short side (pinch the mold inside)
The induction coil 9 for applying the force
Surface and the molten steel surface are formed into a curved surface 3r, and the molten steel 3 here is slowly cooled.
To suppress the solidification shell formation
is there. The induction coil 9 used here generates an alternating magnetic field
And floated inward of the mold 1 against the molten steel 3 in the upper part of the mold 1
Apply force (pinch force). Since the lower short side 6b is cooled under normal conditions, the molten steel 3 is cooled here, and a solidified shell 3s of the molten steel is generated.
【００１２】一方、長辺５は、短辺上部６ａが末広がり
形状になっているので、この短辺上部に対応する上部は
外側に拡開しており、冷却構造を有する銅板とその背後
に配設されたバックプレート（図示省略）等からなって
いる。On the other hand, the upper portion corresponding to the upper portion of the long side 5 has a flared shape at the upper portion 6a of the shorter side. It consists of an installed back plate (not shown) and the like.
【００１３】短辺６と長辺５により形成される鋳型１内
上部は拡開されており、例えば厚みが１０〜５０mmの薄
肉鋳片３ｃを連続鋳造する場合にも、最適の注入特性と
耐用性を有する径、厚みの溶鋼注入ノズル２の挿入およ
びその最適配置が容易なように配慮されている。The upper portion of the mold 1 formed by the short side 6 and the long side 5 is widened, so that, for example, even when the thin cast slab 3c having a thickness of 10 to 50 mm is continuously cast, optimal injection characteristics and durability are ensured. Consideration is given to facilitate the insertion of the molten steel injection nozzle 2 having a diameter and thickness and its optimal arrangement.
【００１４】長辺５での溶鋼３の凝固シェル３ｔは、通
常の場合と同様に形成されるが、短辺６ではその上部６
ａの末広がり部で長辺６と同様凝固シェルを生成させる
と、鋳型１からの鋳片３ｃの抜き出しが円滑にできなく
なるので、この短辺上部６ａの末広がり部を誘導コイル
で溶鋼を浮揚させ、ここでの溶鋼３の凝固シェル生成を
抑制しながら連続鋳造を行う。このように構成した本発
明においては、鋳型短辺の上部を上方に末広がり形状に
形成し、鋳型内上部における注入ノズル挿入部を広く
し、注入ノズルを最適条件で配置することができ溶湯の
注入を安定化することができる。 The solidified shell 3t of the molten steel 3 on the long side 5 is formed in the same manner as in the normal case, but the short side 6 has an upper part 6t.
When to produce the same solidified shell to the long side 6 in a divergent portion of a, so withdrawal of the slab 3c from the mold 1 can not smoothly, induce a divergent portion of the short side upper 6a coil
And the continuous casting is performed while suppressing the solidified shell formation of the molten steel 3 here. The present invention configured in this way
In Ming, the upper part of the short side of the mold spreads upward
Form and widen the injection nozzle insertion part at the top inside the mold
In addition, the injection nozzle can be placed under optimal conditions
The injection can be stabilized.
【００１５】また、短辺上部末広がり部において、鋳型
内溶鋼を誘導コイルで浮揚して短辺上部内面との接触を
回避させることにより凝固シェル生成を抑制できるの
で、鋳片の鋳型からの抜き出しに支障はなく、円滑な連
続鋳造ができ、鋳造の操業性、鋳片の品質を安定確保す
ることができる。本発明は、特に１０〜７０mm厚の薄肉
鋳片鋳片の連続鋳造に適用してより適性の高いものであ
る。Further, in the short-side upper flared portion, since the the molten steel in the mold can be suppressed solidified shell produced by avoiding contact with the flotation to short side upper inner surface with induction coils, withdrawn from the mold of the slab , And smooth continuous casting can be performed, and the operability of casting and the quality of the slab can be ensured stably. The present invention is particularly suitable for continuous casting of thin cast slabs having a thickness of 10 to 70 mm and has higher suitability.
【００１６】（実験例１） 以下に本発明の実験例１について説明する。この実験例
は本発明を溶鋼の連続鋳造に適用した例であり、図１と
同様の構造を有する鋳型を用い、厚さ５０mmのスラブ状
の鋳片を連続鋳造した場合のものである。[0016] Experimental Example 1 of the present invention in Experimental Example 1 will be described below. Experimental Example is an example applied to continuous casting of molten steel of the present invention, using a mold having the same structure as FIG 1, but in the case of continuously cast slab of slab thickness 50 mm.
【００１７】 （１）鋳型：高さ９００mmで、その内部寸法が上端１０
００mm×２００mm，下端９９４mm×５０mmになってお
り、下端から５００mmのところでは１０００mm×５０mm
でかつ下端まで短辺は直線的に傾斜しており、また下端
より高さ５００mm以上上端より１００mm以下では、半径
６３７．５mmで上に凸な円弧とし、上端より１００mm以
上では鉛直となるように形成された鋳型を用いた。 （２）浮揚力（ピンチ力）付与：短辺上部には鋳型上端
から４００mmまでの範囲に交流磁場を発生する誘導コイ
ルを配設し、鋳型上端から０〜４００mmの範囲で鋳型内
溶鋼に浮揚力（ピンチ力）を付与して、短辺上部内面と
溶鋼の接触を回避し、凝固冷却を緩和して、凝固シェル
の生成を抑制した。なお、（３）鋳型の振動、（４）鋳
造速度、（５）溶鋼注入等の条件は、（３）鋳型の振動：振幅３mm、振動数５ヘルツの上下サ
イン振動を行った。 （４）鋳造速度：鋳型内に粘性１ポアズの潤滑剤を添加
しつつ鋳造速度４m/min で連続鋳造した。 （５）溶鋼注入：注入ノズルは、外径７０mm，内径３０
mmの下端解放型のその下 端は鋳型上端から２００mmの位
置で、その中心を鋳型の中心に一致するように 配設し
た。このときの注入ノズルの外周と長辺との距離（最接
近部）は２０mm である。 (1) Mold: 900 mm in height, the inner dimension of which is 10
The size is 00mm x 200mm, the lower end is 994mm x 50mm, and 500mm from the lower end is 1000mm x 50mm
In addition, the short side is linearly inclined to the lower end, and when the height is 500 mm or more from the lower end and 100 mm or less from the upper end, the arc is a convex arc with a radius of 637.5 mm, and the arc is vertical at 100 mm or more from the upper end. The formed template was used. (2) Levitation force (pinch force) application: An induction coil for generating an alternating magnetic field is arranged in the upper part of the short side up to 400 mm from the upper end of the mold, and levitated in the molten steel in the mold within a range of 0 to 400 mm from the upper end of the mold. By applying a force (pinch force), contact between the inner surface of the upper portion of the short side and the molten steel was avoided, solidification cooling was eased, and formation of a solidified shell was suppressed. Incidentally, (3) the vibration of the mold, (4) casting speed, (5) Conditions of the molten steel injection or the like, (3) the vibration of the mold: amplitude 3 mm, the upper and lower support of vibration frequency 5 Hz
In vibration was performed. (4) Casting speed: Lubricant with a viscosity of 1 poise added to the mold
While casting , continuous casting was performed at a casting speed of 4 m / min . (5) Injection of molten steel: The injection nozzle has an outer diameter of 70 mm and an inner diameter of 30
position the lower end open type the lower end of the mm from the mold the upper end of 200mm
In location, it arranged to match the center to center of the mold
Was. At this time, the distance between the outer periphery of the injection nozzle and the long side (the closest
(Close) is 20 mm .
【００１８】このような条件で、１チャージ（１２０
ｔ）の連続鋳造を行った。その結果、得られた鋳片の表
面性状は、通常の鋳型を用いた厚み１００mm以上のスラ
ブ状鋳片の連続鋳造の場合と同様良好で、操業性も遜色
がなく、安定した連続操業ができた。これに対して、前
記従来型の鋳型を用いた場合、本発明の実験例で用いた
大きさの注入ノズルは鋳型内に挿入できなかった。そこ
で、注入ノズルを鋳型に挿入できる径のものを用いて、
連続鋳造を実施した。その結果、極めて短時間に注入ノ
ズルが詰まってしまい、操業継続が不能になった。 Under these conditions, one charge (120
The continuous casting of t) was performed. As a result, the surface properties of the obtained slab are as good as in the case of continuous casting of a slab-shaped slab having a thickness of 100 mm or more using a normal mold, and the operability is not inferior, and stable continuous operation can be performed. Was. In contrast,
When the conventional mold was used, it was used in the experimental example of the present invention.
A large size injection nozzle could not be inserted into the mold. There
In, using a thing that can insert the injection nozzle into the mold,
Continuous casting was performed. As a result, the injection
The vine was clogged, making it impossible to continue operations.
【００１９】[0019]
【発明の効果】本発明においては、鋳型短辺の上部を上
方に末広がり形状に形成し、鋳型内上部における注入ノ
ズル挿入部を広くし、注入ノズルを最適条件で配置する
ことができ溶湯の注入を安定化することができる。ま
た、短辺上部末広がり部において、鋳型内溶鋼を誘導コ
イルで浮揚して短辺上部内面との接触を回避させること
により凝固シェル生成を抑制できるので、鋳片の鋳型か
らの抜き出しに支障はなく、円滑な連続鋳造ができ、鋳
造の操業性、鋳片の品質を安定確保することができる。
本発明は、特に１０〜７０mm厚の薄肉鋳片鋳片の連続鋳
造に適用して、より顕著な効果を奏するものである。According to the present invention, the upper portion of the short side of the mold is formed in a divergent shape upward, the insertion portion of the injection nozzle in the upper portion of the inside of the mold is widened, and the injection nozzle can be arranged under the optimum condition. Can be stabilized. Further, in the short-side upper flared portion, since the the molten steel in the mold can be suppressed solidified shell produced by avoiding contact with the flotation to short side upper inner surface with induction coils, difficulty in extraction from the mold of the slab Therefore, smooth continuous casting can be performed, and the operability of casting and the quality of slab can be ensured stably.
The present invention is particularly applicable to continuous casting of thin cast slabs having a thickness of 10 to 70 mm and has a more remarkable effect.
【図１】（ａ）図は本発明の連続鋳造用鋳型の構造例
（実施例１）を示す立体概要説明図、（ｂ）図は（ａ）
図における一部切り欠き断面正面概要説明図、（ｃ）図
は（ａ）図における一部切り欠き断面側面概要説明図、
（ｄ）図は（ａ）図における短辺上部への誘導コイルの
配置を示す正面断面要部概要説明図。FIG. 1A is a three-dimensional schematic explanatory view showing a structural example (Example 1) of a continuous casting mold of the present invention, and FIG.
(A) is a partially cut-away cross-sectional side schematic view in (a) of FIG.
(D) The figure shows the induction coil on the upper side of the short side in (a).
FIG. 3 is a schematic explanatory view of a main part of a front cross section showing an arrangement .
【図２】（ａ）図は従来の連続鋳造用鋳型の構造例を示
す立体概要説明図、（ｂ）図は（ａ）図における正面概
要説明図、（ｃ）図は（ａ）図における側面概要説明
図。 FIG. 2 (a) shows a structural example of a conventional continuous casting mold.
(B) is a schematic front view in FIG.
Explanation required, (c) is a schematic side view in (a)
FIG.
１ 鋳型 ２ 溶鋼注入ノズル ２ｏ 吐出口 ３ 溶鋼 ３ｃ 薄肉鋳片 ３ｔ 溶鋼凝固シェル（長辺側） ３ｓ 溶鋼凝固シェル（短辺側） ４ 潤滑パウダー ５ 長辺 ６ 短辺 ６ａ 短辺上部 ６ｂ 短辺下部 ９ 誘導コイル DESCRIPTION OF SYMBOLS 1 Mold 2 Molten steel injection nozzle 2o Discharge port 3 Molten steel 3c Thin cast piece 3t Molten steel solidification shell (long side) 3s Molten steel solidification shell (short side) 4 Lubrication powder 5 Long side 6 Short side 6a Short side upper part 6b Short side lower part 9 Induction coil
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤崎 敬介 千葉県富津市新富20−１ 新日本製鐵株 式会社 技術開発本部内 (56)参考文献 特開 昭58−32552（ＪＰ，Ａ) 特開 平２−155543（ＪＰ，Ａ) 特開 平７−232241（ＪＰ，Ａ) 特開 昭62−64458（ＪＰ，Ａ) 特開 昭63−252645（ＪＰ，Ａ) 特開 昭64−83349（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/04 311 B22D 11/11 B22D 11/115 ────────────────────────────────────────────────── ─── Continued on the front page (72) Keisuke Fujisaki, Inventor 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division (56) References JP-A-58-32552 (JP, A) JP-A-2-155543 (JP, A) JP-A-7-232241 (JP, A) JP-A-62-64458 (JP, A) JP-A-63-252645 (JP, A) JP-A-64-83349 JP, A) (58) Fields surveyed (Int. Cl. 7 , DB name) B22D 11/04 311 B22D 11/11 B22D 11/115
Claims (1)
金属の連続鋳造装置の鋳型構造において、鋳型短辺上部
を上方に末広がりとなる形状にし、かつこの鋳型短辺上
部に溶融金属を浮揚させるための誘導コイルを配設した
ことを特徴とする溶融金属の連続鋳造鋳型構造。 1. A method for continuously casting thin cast slabs having a rectangular cross section.
In the mold structure of a continuous metal casting machine, the upper part of the short side of the mold
Into a shape that diverges upward, and on the short side of the mold
Induction coil for levitation of molten metal is installed in the section
A continuous casting mold structure for molten metal, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05087594A JP3270615B2 (en) | 1994-03-22 | 1994-03-22 | Continuous casting mold structure of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05087594A JP3270615B2 (en) | 1994-03-22 | 1994-03-22 | Continuous casting mold structure of molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07256399A JPH07256399A (en) | 1995-10-09 |
| JP3270615B2 true JP3270615B2 (en) | 2002-04-02 |
Family
ID=12870901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05087594A Expired - Lifetime JP3270615B2 (en) | 1994-03-22 | 1994-03-22 | Continuous casting mold structure of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3270615B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0780176A3 (en) | 1995-12-13 | 1999-05-06 | Hitachi, Ltd. | Apparatus for and process of continuous casting |
| JP5730738B2 (en) * | 2011-10-07 | 2015-06-10 | 株式会社神戸製鋼所 | Continuous casting method and continuous casting apparatus for slab made of titanium or titanium alloy |
-
1994
- 1994-03-22 JP JP05087594A patent/JP3270615B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07256399A (en) | 1995-10-09 |
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