JPH01271030A - Method for continuously casting double-layer cast slab - Google Patents
Method for continuously casting double-layer cast slabInfo
- Publication number
- JPH01271030A JPH01271030A JP10054888A JP10054888A JPH01271030A JP H01271030 A JPH01271030 A JP H01271030A JP 10054888 A JP10054888 A JP 10054888A JP 10054888 A JP10054888 A JP 10054888A JP H01271030 A JPH01271030 A JP H01271030A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- zone
- outer layer
- heating zone
- layer
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000009749 continuous casting Methods 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 150000002739 metals Chemical class 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 26
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 36
- 238000009413 insulation Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000007654 immersion Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、表面の一部又は複数個所に組成の異なる層を
形成した複層鋳片を、溶融状態から連続的に製造する方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for continuously producing a multilayer slab in which layers of different compositions are formed on a portion or multiple locations of the surface from a molten state.
連続鋳造によって複合鋼材を製造する方法として、長さ
の異なる２本の浸漬ノズルを鋳型内にある溶融金属のプ
ールに挿入し、それぞれのノズルの吐出孔位置を鋳造方
向の異なる位置に設け、異種の溶融金属を注入する方法
が、特公昭４４−２７３６１号公報で提案されている。As a method for manufacturing composite steel materials by continuous casting, two immersion nozzles of different lengths are inserted into a pool of molten metal in a mold, and the discharge holes of each nozzle are set at different positions in the casting direction. A method of injecting molten metal is proposed in Japanese Patent Publication No. 44-27361.
しかし、単に２本の浸漬ノズルで鋳型内の鋳造方向の異
なる位置で異種金属を注入するようにしただけでは、異
種金属の鋳型内における吐出位置又は吐出流のパターン
をいかに調整しようとも、注入の進行、すなわち鋳造の
進行と共に異種の溶融金属間での混合が生じる。そのた
め、鋳片の表層から内部にかけて、厚み方向に関して濃
度が変化する境界相が形成される。或いは、表層と内部
との境界が極めて不鮮明な鋳片となる。However, simply injecting dissimilar metals at different positions in the mold in the casting direction using two immersion nozzles will result in no matter how much the dissimilar metal discharge position or discharge flow pattern within the mold is adjusted. As the casting progresses, mixing occurs between the dissimilar molten metals. Therefore, a boundary phase whose concentration changes in the thickness direction is formed from the surface layer to the inside of the slab. Alternatively, the boundary between the surface layer and the interior becomes extremely unclear.
そこで、特公昭４９−４４８５９号公報では、鋳型に注
入された異種の溶融金属間に耐火物製の隔壁を設けて、
連続鋳造する方法が提案されている。しかし、異種溶融
金属の混合を抑えるためには、充分な大きさの耐火物隔
壁を鋳造空間に挿入することが必要になる。そのため、
鋳造上に新たな問題が生じる。たとえば、耐火物隔壁が
大きくなるに伴って、それが凝固中のシェルに接触する
危険性が高くなる。この接触があると、シェルに捕捉さ
れて耐火物が破損したり、シェルが敗れてブレークアウ
トを発生することにもなりかねない。また、高温の溶融
金属に浸漬された耐火物隔壁は、物面的強度の点でも問
題があり、鋳造中に溶損或いは破損して本来の目的が達
成できないばかりか、ストランド中に巻き込まれた耐火
物は、鋳造作業及び製品品質に悪影響を与える。Therefore, in Japanese Patent Publication No. 49-44859, a partition wall made of refractory is provided between different types of molten metal poured into a mold,
A continuous casting method has been proposed. However, in order to suppress mixing of dissimilar molten metals, it is necessary to insert a sufficiently large refractory partition into the casting space. Therefore,
New casting problems arise. For example, as the refractory bulkhead gets larger, the risk of it contacting the solidifying shell increases. This contact can cause the shell to become trapped and cause damage to the refractory, or even cause the shell to fail and cause a breakout. In addition, refractory partition walls immersed in high-temperature molten metal have problems in terms of physical strength, and not only can they melt or break during casting, making it impossible to achieve their original purpose, but they can also become entangled in the strands. Refractories have a negative impact on casting operations and product quality.
本発明者等は、この耐火物隔壁が持つ欠点を解消するた
め、鋳型内に注入された異種の溶融金属を仕切る手段と
して静磁場を利用した方法を開発し、これを特願昭６１
−２５２８９８号として出願した。In order to eliminate the drawbacks of this refractory partition wall, the present inventors developed a method that utilizes a static magnetic field as a means to partition dissimilar molten metals poured into a mold, and applied for this method in a patent application filed in 1983.
The application was filed as No.-252898.
この方法においては、鋳造方向に対して垂直な方向に鋳
片全幅にわたって磁力線が延在するような静磁場を形成
させ、この静磁場を境界としてその上下に異種の溶融金
属を供給している。この静磁場により電磁ブレーキが働
き、静磁場帯での溶融金属の流れが制動される。その結
果、上下層が接する位置での上下層の混合を最低限に抑
えることができる。In this method, a static magnetic field is formed in which lines of magnetic force extend across the entire width of the slab in a direction perpendicular to the casting direction, and different types of molten metal are supplied above and below this static magnetic field as a boundary. This static magnetic field acts as an electromagnetic brake, and the flow of molten metal in the static magnetic field is braked. As a result, mixing of the upper and lower layers at the position where the upper and lower layers contact can be suppressed to a minimum.
このようにして異種金属相互の混合が少なく、表層と内
部との境界部が明瞭な複層鋳片が得られる。得られた複
層鋳片は、たとえば普通鋼組成をもつ内部の全周をステ
ンレス鋼組成をもつ表層で覆ったも′のとなる。しかし
、複層鋳片としては、全集を異種の材料で覆ったものの
他に、表面の一部に異種材料の層を形成したものに対す
る需要が大きい。たとえば、レール用鋼では、表層部を
耐摩耗性に優れた鋼材とし、基部を靭性に優れた鋼材と
している。また、構造用材料においては、片面のみが耐
食性に優れた材料で、他面が強度を有する鋼材からなる
複合材料が必要とされる場合がある。In this way, a multilayer slab with less mixing of different metals and a clear boundary between the surface layer and the interior can be obtained. The obtained multi-layer slab is one in which the entire circumference of the interior, which has a composition of common steel, is covered with a surface layer that has a composition of stainless steel. However, as for multi-layer slabs, there is a great demand for slabs in which a complete set is covered with different materials, as well as slabs in which a layer of different materials is formed on a part of the surface. For example, in rail steel, the surface layer is made of a steel material with excellent wear resistance, and the base portion is made of a steel material with excellent toughness. In addition, in structural materials, there are cases where a composite material is required, in which only one side is made of a material with excellent corrosion resistance and the other side is made of a steel material with strength.
ところが、前述の特公昭４４−２７３６１号公報或いは
特公昭４９−４４８５９号公報に記載されている方法に
よっては、このような表面の一部に異種材料層を設けた
複層鋳片を製造することはできない。また、本発明者等
が提案した特願昭６１−２５２８９８号の方法において
も同様である。However, depending on the method described in the above-mentioned Japanese Patent Publication No. 44-27361 or Japanese Patent Publication No. 49-44859, it is not possible to manufacture a multilayer slab in which a layer of a different material is provided on a part of the surface. I can't. The same applies to the method proposed by the present inventors in Japanese Patent Application No. 61-252898.
そこで、本発明は、鋳型内壁におけるシェルの成長を鋳
造方向と直角な方向に関して局部的に制御することによ
り、表面の選択された一部のみに異種材料層を形成した
複層鋳片を製造刷ることを目的とする。Therefore, the present invention aims to produce a multi-layer slab in which a layer of different materials is formed only on a selected part of the surface by locally controlling the growth of the shell on the inner wall of the mold in a direction perpendicular to the casting direction. The purpose is to
本発明の連続鋳造方法は、その目的を達成するために、
鋳型に供給された溶融金属の湯面レベルよりも下方の位
置で、鋳片全幅にわたって磁力線が延在する静磁場を印
加し、この静磁場帯を境として上下に異なる金属を供給
することにより複層鋳片を連続鋳造する際に、前記湯面
レベルから少なくとも前記静磁場帯の下部にまで垂直方
向に延びる断熱帯又は加熱帯を、前記鋳型の一部又は複
数個所に設けたことを特徴とする。In order to achieve the purpose of the continuous casting method of the present invention,
A static magnetic field with lines of magnetic force extending across the entire width of the slab is applied below the level of the molten metal supplied to the mold, and different metals are supplied above and below this static magnetic field band. When continuously casting layered slabs, a thermal insulation zone or a heating zone extending vertically from the hot water level to at least the lower part of the static magnetic field zone is provided in one or more places of the mold. do.
前掲した従来の方法によって製造される複層鋳片にふい
て、内部の材料と異なる種類の材料層が外周の全面に形
成されるのは、鋳片の表裏両面共に、外層シェルの成長
を同様な条件下で行うためである。これに対し、本発明
の鋳造方法においては、鋳型の一部又は複数個所に、湯
面レベルから少なくとも静磁場帯の下部にまで垂直方向
に延びた断熱帯又は加熱帯を設けている。The reason why a layer of material different from the inner material is formed on the entire outer periphery of the multi-layer slab produced by the conventional method mentioned above is that the growth of the outer shell is the same on both the front and back sides of the slab. This is because it is carried out under suitable conditions. On the other hand, in the casting method of the present invention, a thermal insulation zone or a heating zone extending vertically from the melt level to at least the lower part of the static magnetic field zone is provided at one or more locations of the mold.
第１図は、本発明の連続鋳造によって生成するシェルの
゛成長過程を説明するための図である。FIG. 1 is a diagram for explaining the growth process of a shell produced by continuous casting according to the present invention.
、連続鋳造用鋳型１の内部に、それぞれ長さの異なる浸
漬ノズル２，３が浸漬されている。これら浸漬ノズル２
，３から、それぞれ種類の異なる溶融金属４．５を連続
鋳造用鋳型１内に注入する。, immersion nozzles 2 and 3 having different lengths are immersed inside a mold 1 for continuous casting. These immersion nozzles 2
, 3, respectively, different types of molten metals 4.5 are injected into the continuous casting mold 1.
外層６を形成する溶融金属４は、短い浸漬ノズル２から
連続鋳造用鋳型１内に供給され、鋳型の冷却面と接触し
てシェルを形成する。このシェルが鋳造方向すなわち下
方に行くに従って成長し、外層６となる。母材＠５７を
形成する溶融金ｒＲ５は、長尺の浸漬ノズル３から連続
鋳造用鋳型１の深い部分に供給される。The molten metal 4 forming the outer layer 6 is fed into the continuous casting mold 1 through a short submerged nozzle 2 and forms a shell in contact with the cooling surface of the mold. This shell grows in the casting direction, that is, in the downward direction, and becomes the outer layer 6. Molten gold rR5 forming the base material @57 is supplied from the long immersion nozzle 3 to the deep part of the continuous casting mold 1.
ここで、溶融金属４．５が互いに混じり合うことを防止
するため、鋳造方向に対して直角な方向に磁力線が働く
静磁場を形成する磁石８を配置している。この静磁場に
より、溶融金属４，５の流動が制動され、溶融金属４．
５の境界面における乱れが抑制される。この点は、先願
の特願昭６３−１０８９４７号の明細書で説明したもの
と同様である。Here, in order to prevent the molten metals 4.5 from mixing with each other, a magnet 8 is arranged to form a static magnetic field in which lines of magnetic force act in a direction perpendicular to the casting direction. This static magnetic field brakes the flow of the molten metals 4 and 5.
5. Disturbances at the interface are suppressed. This point is similar to that explained in the specification of the earlier Japanese Patent Application No. 108947/1983.
本発明においては、連続鋳造用鋳型１の辺の一部内面に
断熱帯又は加熱帯９を設けている。この断熱帯又は加熱
帯９は、外層６の成長を抑制するため、溶融金属４の湯
面レベルＬから静磁場帯の少なくとも下部まで垂直方向
に延びている。したがって、断熱帯又は加熱帯９がある
部分では、外層６となるシェルの成長が抑制され、母材
ｎ７の材料が表面に露出した鋳片が得られる。そして、
連続鋳造用鋳型１に対する断熱帯又は加熱帯９の配置形
態を変えることによって、鋳片の必要とする表面部分に
のみ、母材部７の材料とは異なる材料でできた外層６を
形成することができる。In the present invention, an insulating zone or heating zone 9 is provided on the inner surface of a part of the side of the continuous casting mold 1. This insulation zone or heating zone 9 extends vertically from the level L of the molten metal 4 to at least the lower part of the static magnetic field zone in order to suppress the growth of the outer layer 6. Therefore, in the area where the insulation zone or the heating zone 9 is present, the growth of the shell that becomes the outer layer 6 is suppressed, and a slab in which the material of the base material n7 is exposed on the surface is obtained. and,
Forming the outer layer 6 made of a material different from the material of the base material 7 only on the required surface portion of the slab by changing the arrangement of the insulation zone or the heating zone 9 with respect to the continuous casting mold 1. I can do it.
ここで使用する加熱帯としては、高周波誘導加熱、電気
抵抗加熱等を組み込んだグラファイト製鋳型、セラミッ
クス鋳型等がある。また、断熱体としては、グラファイ
ト製鋳型、セラミックス鋳型等がある。Examples of the heating zone used here include graphite molds and ceramic molds incorporating high-frequency induction heating, electric resistance heating, and the like. In addition, examples of the heat insulator include graphite molds and ceramic molds.
第２図の平断面図で示すように、連続鋳造用鋳型１の一
部内面に加熱帯９を設けた。そして、第２図のＩ−１線
に沿った断面図である第３図で示すように、浸漬ノズル
３から普通鋼組成をもつ溶融金属５（融点１４９６℃）
を注入し、浸漬ノズル２から５ＵＳ３０４組成をもつ溶
融金属４（融点１４５０℃）を注入した。このとき、連
続鋳造用鋳型１の抜熱能力は、通常の水冷銅鋳型と同等
とした。また、加熱帯９としては、電気抵抗加熱を組み
込んだセラミックス製鋳型を使用し、加熱帯９に接する
部分を溶融金属４は凝固するが溶融金Ｗｊ４５は凝固し
ない温度条件に維持した。As shown in the plan cross-sectional view of FIG. 2, a heating zone 9 was provided on a part of the inner surface of the continuous casting mold 1. As shown in FIG. 3, which is a cross-sectional view taken along line I-1 in FIG.
A molten metal 4 having a composition of 5US304 (melting point 1450°C) was injected from the immersion nozzle 2. At this time, the heat removal capacity of the continuous casting mold 1 was set to be equivalent to that of a normal water-cooled copper mold. Further, as the heating zone 9, a ceramic mold incorporating electric resistance heating was used, and the portion in contact with the heating zone 9 was maintained at a temperature condition in which the molten metal 4 solidified but the molten gold Wj 45 did not solidify.
これによって、第４図に示すように、鋳片の片面にのみ
厚み２０Ｍの外層６が形成され、他の部分は母材部７が
表面まで達した複層鋳片を製造することができた。また
、外層６と母材部７との境界では、脆い化合物が生成す
ることなく、成分及び組成が明確に異なる界面が形成さ
れた。したがって、得られた鋳片を目標板厚に圧延した
場合においても、外層６の剥離は見られなかった。また
、外層６は耐食性及び外観に優れ、母材部７は溶接性に
優れているため、建材等の各種構造用材料として利用す
ることができた。As a result, as shown in Fig. 4, it was possible to manufacture a multilayer slab in which an outer layer 6 with a thickness of 20M was formed only on one side of the slab, and the base material 7 reached the surface on the other parts. . Further, at the boundary between the outer layer 6 and the base material portion 7, an interface with clearly different components and compositions was formed without the formation of brittle compounds. Therefore, even when the obtained slab was rolled to the target thickness, no peeling of the outer layer 6 was observed. In addition, the outer layer 6 has excellent corrosion resistance and appearance, and the base material 7 has excellent weldability, so it could be used as various structural materials such as building materials.
以上の例は、２層のステンレス張り鋼板を製造する場合
を説明した。しかし、本発明は、これに拘束されるもの
ではなく、連続鋳造用鋳型１に対する断熱帯又は加熱帯
９の配置形態如何によって種々の状態で外層６を設けた
複層鋳片を製造することができる。第５図は、その数例
を示す。The above example describes the case of manufacturing a two-layer stainless steel plate. However, the present invention is not limited to this, and multi-layer slabs with the outer layer 6 provided in various states can be manufactured depending on the arrangement of the insulation zone or the heating zone 9 with respect to the continuous casting mold 1. can. FIG. 5 shows some examples.
同図（ａ）の複層鋳片は、母材部７の３辺に外層６を設
けた例であり、この場合には連続鋳造用鋳型に対して一
点鎖線で示すように断熱帯又は加熱帯９を配置する。同
図（ｂ）の複層鋳片は、母材部７表面の一部に外層６を
設けた例である。また、同図（Ｃ）の複層鋳片は、表裏
両面に外層６を設け、側面に母材部７が露出したもので
ある。そして、同図（山の複層鋳片は、表面の複数個所
に外１６を形成した例を示す。The multi-layer slab shown in Figure (a) is an example in which the outer layer 6 is provided on three sides of the base metal part 7, and in this case, the continuous casting mold is provided with an insulation zone or a heating zone as shown by the dashed line. Place Tropical 9. The multi-layer slab shown in FIG. 2B is an example in which an outer layer 6 is provided on a part of the surface of the base material 7. Moreover, the multilayer slab shown in FIG. 2C has an outer layer 6 provided on both the front and back surfaces, and a base material portion 7 exposed on the side surface. The same figure (the multi-layered slab of Mt.) shows an example in which outer layers 16 are formed at a plurality of locations on the surface.
このように、連続鋳造用鋳型１に対する断熱帯又は加熱
帯９の配置形態を適宜選択することによって、母材部７
の必要とする個所に外層６を形成することができる。In this way, by appropriately selecting the arrangement form of the insulation zone or the heating zone 9 with respect to the continuous casting mold 1, the base material portion 7
The outer layer 6 can be formed where necessary.
以上に°説明したように、本発明においては、鋳型内に
注入された異種の溶融金属を冷却・凝固して複層鋳片を
製造するに当たり、鋳型の水平断面に沿った冷却能力を
断熱帯又は加熱帯により変更している。そのため、鋳造
方向に関して鋳型内面の一部では外層となる溶融金属が
凝固してシェルを形成するが、他の部分では母材部とな
るシェルが形成される。そして、この外層の形成個所は
、断熱帯又は加熱帯の配置形態を変えることによって、
自由に調整することができる。そのため、従来では圧接
や溶接等で製造されていたクラツド鋼板が溶融金属から
直接製造できることは勿論、レール用鋼、構造用鋼等の
製品に応じて外層を形成した複層鋳片を製造することが
可能となる。As explained above, in the present invention, when producing a multi-layer slab by cooling and solidifying dissimilar molten metals poured into a mold, the cooling capacity along the horizontal cross section of the mold is reduced to an insulating zone. Or it is changed depending on the heating zone. Therefore, in a part of the inner surface of the mold in the casting direction, the molten metal that becomes the outer layer solidifies to form a shell, but in other parts, a shell that becomes the base material is formed. The location where this outer layer is formed can be determined by changing the arrangement of the insulation zone or heating zone.
Can be adjusted freely. Therefore, not only can clad steel sheets, which were conventionally manufactured by pressure welding or welding, be manufactured directly from molten metal, but also multilayer slabs with an outer layer can be manufactured for products such as rail steel and structural steel. becomes possible.
第１図は本発明の詳細な説明する図であり、第２図、第
３図及び第４図は本発明実施例を説明するための図であ
り、第５図は外層の形成に関する数例を示す。
１：連続鋳造用鋳型 ２．３＝浸漬ノズル４．５
：溶融金属 ６：外層７：母材部
８：＠石
９：断熱帯又は加熱帯
特許出願人 新日本製鐵 株式會社（ほか１名）FIG. 1 is a diagram for explaining the present invention in detail, FIGS. 2, 3, and 4 are diagrams for explaining embodiments of the present invention, and FIG. 5 is a diagram for explaining several examples regarding the formation of the outer layer. shows. 1: Continuous casting mold 2.3 = Immersion nozzle 4.5
: Molten metal 6: Outer layer 7: Base metal part
8: @ Stone 9: Insulation zone or heating zone patent applicant Nippon Steel Corporation (and 1 other person)
Claims (1)
の位置で、鋳片全幅にわたって磁力線が延在する静磁場
を印加し、この静磁場帯を境として上下に異なる金属を
供給することにより複層鋳片を連続鋳造する際に、前記
湯面レベルから少なくとも前記静磁場帯の下部にまで垂
直方向に延びる断熱帯又は加熱帯を、前記鋳型の一部又
は複数個所に設けたことを特徴とする複層鋳片の連続鋳
造方法。1. Applying a static magnetic field with lines of magnetic force extending across the entire width of the slab at a position below the level of the molten metal supplied to the mold, and supplying different metals above and below this static magnetic field zone. When continuously casting a multi-layer slab, an insulating zone or a heating zone extending vertically from the hot water level to at least the lower part of the static magnetic field zone is provided in one or more places of the mold. Features: Continuous casting method for multi-layer slabs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10054888A JPH01271030A (en) | 1988-04-22 | 1988-04-22 | Method for continuously casting double-layer cast slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10054888A JPH01271030A (en) | 1988-04-22 | 1988-04-22 | Method for continuously casting double-layer cast slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01271030A true JPH01271030A (en) | 1989-10-30 |
| JPH0464768B2 JPH0464768B2 (en) | 1992-10-16 |
Family
ID=14276999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10054888A Granted JPH01271030A (en) | 1988-04-22 | 1988-04-22 | Method for continuously casting double-layer cast slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01271030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991012909A1 (en) * | 1990-02-23 | 1991-09-05 | Nippon Steel Corporation | Continuous casting apparatus |
-
1988
- 1988-04-22 JP JP10054888A patent/JPH01271030A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991012909A1 (en) * | 1990-02-23 | 1991-09-05 | Nippon Steel Corporation | Continuous casting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0464768B2 (en) | 1992-10-16 |
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