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1. 发明授权

EP2974810B1 CASTING EQUIPMENT AND CASTING METHOD USING SAME 有权转让
公开(公告)号：EP2974810B1
公开(公告)日：2018-07-25
申请号：EP14762821.8
申请日：2014-03-14
申请人： Posco
发明人： OH, Kyung Shik , LEE, Joo Dong , CHOI, Jeong Yun , KIM, Sung Jool
IPC分类号： B22D7/00 , B22D9/00 , B22D11/128 , B22D11/041 , B22D11/115 , B22D11/12 , B22D11/14
CPC分类号： B22D11/128 , B22D7/00 , B22D7/06 , B22D9/003 , B22D11/041 , B22D11/115 , B22D11/1213 , B22D11/122 , B22D11/124 , B22D11/141
摘要： The present invention relates to casting equipment for producing a casting with a large cross-section for a very thick steel material and a casting method using the same, and the casting equipment includes; a casting part with a passage for a molten steel for casting the molten steel into a casting; a support part arranged separately from the casting part for receiving and supporting the casting in at least one of the sides of the casting; and a solidifying part arranged outside the casting provided with a first quality control device for solidifying the casting, whereby the casting method includes the steps of: preparing a molten steel for casting; casting the molten steel in the casting part with the passage opened or closed into a casting; conveying the casting to the solidifying part; and conveying the solidified casting to a subsequent process so as to improve the quality of the casting, thus increasing substantially the yield rate of castings. In addition, the molten steel is continuously stirred through the quality control device and a solidification inducement device from the start of casting to the end of solidifying the casting so as to enhance the exquiaxed surface ratio of the casting, and decrease segregation/porosity and the internal defects such as a pipe generated at an end of casting. Also, when producing a casting with a large cross-section for a very thick steel material, the casting part can produce another casting continuously while the previous casting is solidified in the solidifying part, thus saving the time consumend for solidifying the casting for a very thick stell material by means of the continouous solidifying part. This prevents the casting process from being stopped, thereby enhancing the productivity of a casting and the efficiency of the casting equipment.

2. 发明授权

EP2308617B1 Method for processing molten steel 有权
标题翻译：加工钢水的方法
公开(公告)号：EP2308617B1
公开(公告)日：2018-02-21
申请号：EP10186285.2
申请日：2000-04-07
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： Zeze, Masafumi , Morohoshi, Takashi , Miura, Ryusuke , Kusunoki, Shintaro , Kinari, Yasuhiro , Abe, Masayuki , Sugano, Hiroshi , Miyamoto, Kenichiro , Oka, Masaharu , Koyama, Yuji
IPC分类号： B22D11/10 , B22D11/108 , B22D11/115 , B22D11/128 , B22D27/02 , B22D27/20 , C22C38/00 , B22D11/00 , C21D8/00
CPC分类号： B22D11/108 , B22D11/00 , B22D11/115 , B22D11/122 , C21D8/00 , C21D8/105 , C21D2211/005 , C22C38/00
摘要： A cast steel with excellent workability, characterized in that not less than 60% of the total cross section thereof is occupied by equiaxed crystals, the diameters (mm) of which satisfy the following formula: D + 0.75, wherein D designates each diameter (mm) of equiaxed crystals in terms of internal structure in which the crystal orientations are identical, and X the distance (mm) from the surface of the cast steel. The cast steel and the steel material obtained by processing the cast steel have very few surface flaws and internal defects.

3. 发明公开

EP3238856A1 A METHOD OF CONTROLLING THE SOLIDIFICATION PROCESS OF CONTINUOUSLY CAST METALS AND ALLOYS AND A DEVICE FOR IMPLEMENTING THE METHOD 有权
标题翻译：一种控制连续铸造金属和合金凝固过程的方法及实施该方法的装置
公开(公告)号：EP3238856A1
公开(公告)日：2017-11-01
申请号：EP17168423.6
申请日：2017-04-27
申请人： Pokusova, Marcela , Murgas, Marian
发明人： Pokusova, Marcela , Murgas, Marian
IPC分类号： B22D11/115 , B22D11/12
CPC分类号： B22D11/115 , B22D11/122
摘要： It regards alloys, in particular steel, that are paramagnetic around the liquidus temperature with an aim to support formation of columnar grains, suppression of forming polyhedral grains, refining a primary structure and targeted intervention into formation and distribution of primary and accompanying structural components. The process control is applied in the entire molten metal volume that solidifies under the effect of linear magnetic field having induction of 0.04 to 03 T. The process control of the solidification of continuously cast steel is applied in the entire molten metal volume, magnetically treated molten metal is transported into from the active zone of an electromagnet generating linear magnetic field having induction of 0.04 to 03 T by transportation motion during 5 to 10 seconds with velocity of 0.1 to 0.6 m.s -1 , wherein motion of the magnetically treated molten metal may be produced in any manner, in particular by a linear motor or conductively, by interaction of magnetic field of the electromagnet and direct current of 500 to 2200 A separately conducted into a billet by rollers closely below a crystalliser and by rollers below the electromagnet.
摘要翻译：它涉及合金，特别是钢，在液相线温度附近具有顺磁性，其目的是支持柱状晶粒的形成，抑制形成多面体晶粒，改善主要结构和有针对性地干预主要和伴随结构组分的形成和分布。工艺控制应用于整个熔融金属体积中，该金属体积在0.04至0.03T的感应线性磁场的作用下凝固。连铸钢的凝固过程控制应用于整个熔融金属体积，经过磁处理的熔融金属金属通过输送运动从电磁铁的有源区输送到产生具有0.04到03T的感应为0.04到03T的线性磁场，时间为5-10秒，速度为0.1到0.6ms-1，其中经过磁处理的熔融金属的运动可以是特别是通过直线电动机或通过电磁铁的磁场与500至2200A的直流电的相互作用产生，所述直流电分别由接近结晶器下方的辊和电磁体下方的辊引入坯段。

4. 发明公开

EP2974810A4 CASTING EQUIPMENT AND CASTING METHOD USING SAME 有权转让
标题翻译：铸造装置及其铸造方法
公开(公告)号：EP2974810A4
公开(公告)日：2016-09-28
申请号：EP14762821
申请日：2014-03-14
申请人： POSCO
发明人： OH KYUNG SHIK , LEE JOO DONG , CHOI JEONG YUN , KIM SUNG JOOL
IPC分类号： B22D7/00 , B22D9/00 , B22D11/041 , B22D11/115 , B22D11/12 , B22D11/128 , B22D11/14
CPC分类号： B22D11/128 , B22D7/00 , B22D7/06 , B22D9/003 , B22D11/041 , B22D11/115 , B22D11/1213 , B22D11/122 , B22D11/124 , B22D11/141
摘要： The present invention relates to casting equipment for producing a casting with a large cross-section for a very thick steel material and a casting method using the same, and the casting equipment includes; a casting part with a passage for a molten steel for casting the molten steel into a casting; a support part arranged separately from the casting part for receiving and supporting the casting in at least one of the sides of the casting; and a solidifying part arranged outside the casting provided with a first quality control device for solidifying the casting, whereby the casting method includes the steps of: preparing a molten steel for casting; casting the molten steel in the casting part with the passage opened or closed into a casting; conveying the casting to the solidifying part; and conveying the solidified casting to a subsequent process so as to improve the quality of the casting, thus increasing substantially the yield rate of castings. In addition, the molten steel is continuously stirred through the quality control device and a solidification inducement device from the start of casting to the end of solidifying the casting so as to enhance the exquiaxed surface ratio of the casting, and decrease segregation/porosity and the internal defects such as a pipe generated at an end of casting. Also, when producing a casting with a large cross-section for a very thick steel material, the casting part can produce another casting continuously while the previous casting is solidified in the solidifying part, thus saving the time consumend for solidifying the casting for a very thick stell material by means of the continouous solidifying part. This prevents the casting process from being stopped, thereby enhancing the productivity of a casting and the efficiency of the casting equipment.

5. 发明公开

EP2808103A1 ELECTROMAGNETIC STIRRING APPARATUS, AND CONTINUOUS CASTING METHOD 失效转让
标题翻译：电磁搅拌连铸
公开(公告)号：EP2808103A1
公开(公告)日：2014-12-03
申请号：EP13833216.8
申请日：2013-08-27
申请人： Nippon Steel & Sumitomo Metal Corporation
发明人： IKEDA, Tatsuhiko , OKADA, Nobuhiro , HAYASHI, Hiroshi , YAMAZAKI, Masahiro
IPC分类号： B22D11/115 , B22D11/04
CPC分类号： B22D11/115 , B22D11/041 , B22D11/122
摘要： The present invention provides an electromagnetic stirrer uniformly applying an electromagnetic force to each casting mold. The electromagnetic stirrer of the present invention includes a pair of electromagnetic coils including a casting mold(s) between them, wherein an inner winding is applied to outside of each of two of tooth provided to a core of each of the pair of electromagnetic coils, an outer winding is applied to outside of the inner windings, ways of applying current to be applied to the windings are changed depending on the distance of the electromagnetic coils, and the number of the casting molds n, the external size ϕ, and the width of each of the electromagnetic coils W are defined as n×ϕ

6. 发明公开

EP2308617A3 Cast steel and steel material with excellent workability, method for processing molten steel therefor and method for manufacturing the cast steel and steel material 有权
标题翻译：具有优良加工性的铸钢和钢材，用于加工熔钢的方法以及用于制造铸钢和钢材的方法
公开(公告)号：EP2308617A3
公开(公告)日：2011-08-10
申请号：EP10186285.2
申请日：2000-04-07
申请人： Nippon Steel Corporation
发明人： Zeze, Masafumi , Morohoshi, Takashi , Miura, Ryusuke , Kusunoki, Shintaro , Kinari, Yasuhiro , Abe, Masayuki , Sugano, Hiroshi , Miyamoto, Kenichiro , Oka, Masaharu , Koyama, Yuji
IPC分类号： B22D11/10 , B22D11/108 , B22D11/115 , B22D11/128 , B22D27/02 , B22D27/20 , C22C38/00 , B22D11/00
CPC分类号： B22D11/108 , B22D11/00 , B22D11/115 , B22D11/122 , C21D8/00 , C21D8/105 , C21D2211/005 , C22C38/00
摘要： A method for processing molten steel for making fine the solidification structure of a cast steel, characterized by carrying out a deoxidation treatment by adding a prescribed amount of "Al-containing alloy" in said molten steel before adding a prescribed amount of Mg therein.
摘要翻译： 1，一种处理钢水以对铸钢的凝固组织进行细化的处理方法，其特征在于，在向其中加入规定量的Mg之前，在所述钢水中加入规定量的“含Al合金”进行脱氧处理。

7. 发明公开

EP2268431A1 MODULATED ELECTROMAGNETIC STIRRING OF METALS AT ADVANCED STAGE OF SOLIDIFICATION 审中-公开
标题翻译： MODULIERTES ELEKTROMAGNETISCHESRÜHRENVON METALLEN IM FORTGESCHRITTENEN STADIUM DES ERSTARRENS
公开(公告)号：EP2268431A1
公开(公告)日：2011-01-05
申请号：EP08783247.3
申请日：2008-07-22
申请人： ABB Inc.
发明人： BEITELMAN, Leonid S. , LAVERS, J. Douglas , CURRAN, Christopher P. , TALLBACK, Gote
IPC分类号： B22D11/115 , B01F13/08 , B22D27/02
CPC分类号： B22D11/115 , B01F13/0809 , B22D11/122
摘要： A method and apparatus for electromagnetic stirring of molten metals at an advanced stage of solidification, as may be used in continuous casting of steel billets and blooms, are disclosed. At least first and second stirrers are provided for generating first and second rotating magnetic fields of a differing frequency about an axis of solidifying molten metal. The stirrers are arranged about the molten metal in sufficiently close proximity to each other so that their respective magnetic fields superpose to produce a modulated magnetic field. The magnetic fields of the respective stirrers may either have common or opposing rotational directions. The modulated stirring produced by the magnetic fields results in oscillating primary and secondary flows and hence turbulence within the melt bulk in the region wherein temperature of the melt on its central axis is below the liquidus level and at least 10% of substantially solidified material is formed. Turbulent flow created by this stirring method disrupts formation of crystalline structures in the melt bulk and mixes solute enriched melt of the central region with the bulk volume which subsequently results in improvements of the solidification structure and overall internal quality of the cast products.
摘要翻译：公开了一种用于在钢坯和花坯的连续铸造中可用于凝固的后期阶段的熔融金属的电磁搅拌的方法和装置。提供至少第一和第二搅拌器用于产生围绕凝固熔融金属轴线的不同频率的第一和第二旋转磁场。搅拌器围绕熔融金属布置成彼此充分接近，使得它们各自的磁场叠加以产生调制的磁场。各个搅拌器的磁场可以具有共同或相反的旋转方向。通过磁场产生的调制搅拌导致在熔体体积中的熔体体积中的振荡一次和二次流动，其中熔体在其中心轴上的温度低于液相线水平并且形成至少10％的基本上固化的材料的区域。通过这种搅拌方法产生的湍流破坏了熔体体积中的晶体结构的形成，并且将中心区域的富含溶质的熔体与本体体积混合，其随后导致铸造产品的凝固结构和整体内部质量的改善。

8. 发明授权

EP0543290B1 A process for ingot casting employing a magnetic field for reducing macrosegregation and associated apparatus and ingot 失效
标题翻译：通过使用降低宏观偏析，装置和锭的磁场用于铸造锭的方法
公开(公告)号：EP0543290B1
公开(公告)日：2001-04-25
申请号：EP92119460.1
申请日：1992-11-13
申请人： ALUMINUM COMPANY OF AMERICA
发明人： Fang, Que-Tsang , Miksch, Edmond S. , Hildeman, Gregory J.
IPC分类号： B22D11/10 , B22D11/12
CPC分类号： B22D11/122 , B22D11/115

9. 发明公开

EP0871554A1 A METHOD AND A DEVICE FOR CASTING IN A MOULD 失效
标题翻译：方法和装置铸造的形式
公开(公告)号：EP0871554A1
公开(公告)日：1998-10-21
申请号：EP96904426.0
申请日：1996-02-21
申请人： ASEA BROWN BOVERI AB
发明人： LEHMAN, Anders , ERIKSSON, Jan, Erik
IPC分类号： B22D11 , B22D27
CPC分类号： B22D11/115 , B22D11/122
摘要： A method and a device, during casting of metal wherein a mould (11) which is open in both ends of the casting direction is supplied with a primary flow of melt, of controlling the flow of the melt in non-solidified portions of a cast strand (1) formed in the mould. Static or periodically low-frequency magnetic fields are generated and applied to act, at at least two levels (L1, L2) located one after the other in the casting direction, on the non-solidified portions of the cast strand while the cast strand is in the mould. At least one additional static or periodic low-frequency magnetic field is generated and applied to act, at at least one level (L3), on the non-solidified portions which remain in the cast strand while the cast strand is leaving the mould or immediately after the cast strand has left the mould.

10. 发明公开

EP0391823A1 Procédé et dispositif de coulée continue de produits métalliques minces 失效
标题翻译： Verfahren und Vorrichtung zur Herstellung vondünnenMetallprodukten mittels Strangguss。
公开(公告)号：EP0391823A1
公开(公告)日：1990-10-10
申请号：EP90470008.5
申请日：1990-03-16
申请人： TECHMETAL PROMOTION
发明人： Ventavoli, Roger , Neyret, Daniel
IPC分类号： B22D11/12 , B22D11/16
CPC分类号： B22D11/1206 , B22D11/1213 , B22D11/122 , B22D11/16
摘要： Le procédé selon l'invention, pour la coulée continue de produits métalliques minces, notamment en acier, du type selon lequel on coule le métal liquide dans une lingotière de coulée continue de section allongée dont on extrait en continu le métal partiellement solidifié, et on réduit l'épaisseur du produit issu de la lingotière au moyen de rouleaux pinceurs 4,4′, est caractérisé en ce que :
- on détecte si le point de fermeture du puits liquide est situé en amont ou en aval des rouleaux pinceurs,
- et en ce que entre lesdits rouleaux pinceurs, on applique au coeur du produit un champ magnétique variable tout en asservissant l'action dudit champ magnétique à la position détectée du point de fermeture du puits liquide.
A cet effet, le dispositif selon l'invention comporte :
- des moyens de détection 7,7′ du fond du puits de solidification,
- un inducteur 6,6′ au moins, logé dans au moins un des rouleaux pinceurs et pouvant produire un champ magnétique variable dans le coeur du produit coulé,
- et des moyens d'asservissement 8 dudit inducteur auxdits moyens de détection pour amener ou maintenir le point de fermeture du puits de solidification au niveau de l'entrefer des rouleaux pinceurs.
摘要翻译：根据本发明的方法，用于连续铸造特别是由钢制成的薄金属制品，其中熔融金属被浇铸成细长部分的连续铸造铸锭铸模，部分凝固的金属从该铸模铸模连续铸造通过夹送辊4,4'减少从锭铸模出现的产品的厚度，其特征在于： - 确定液池的关闭点是否位于上游或下游夹紧辊...，并且在所述夹送辊之间，将可变磁场施加到产品的芯部，同时使所述磁场的作用落到液池的闭合点的检测位置。为此，根据本发明的装置包括： - 用于检测凝固池底部的装置7,7'， - 至少一个电感器6,6'，容纳在至少一个夹紧辊，并且能够在铸造产品的芯部中产生可变的磁场，以及用于将所述电感器拖动到所述检测装置的装置8，以便将固化池的关闭点保持在或保持在夹辊之间的间隙水平。 ... ...

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