WO2008069329A1 - 溶融金属の連続鋳造方法 - Google Patents
溶融金属の連続鋳造方法 Download PDFInfo
- Publication number
- WO2008069329A1 WO2008069329A1 PCT/JP2007/073731 JP2007073731W WO2008069329A1 WO 2008069329 A1 WO2008069329 A1 WO 2008069329A1 JP 2007073731 W JP2007073731 W JP 2007073731W WO 2008069329 A1 WO2008069329 A1 WO 2008069329A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molten metal
- meniscus
- discharge port
- electromagnetic coil
- mold
- Prior art date
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
-
- 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
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/02—Use of electric or magnetic effects
Definitions
- the present invention relates to a method for continuously producing molten metal, and more particularly to improvement of molten metal flow in a mold.
- a mold In the continuous fabrication method of molten metal, a mold is used in which the four corners of the fabrication space that forms the mold are surrounded by a water-cooled copper plate. The molten metal is injected into the mold, and the molten metal part in contact with the mold is solidified. The shell is formed and pulled out from the bottom of the mold while the shell grows, and finally solidification is completed to form a continuous forged piece.
- the forging space in the slab also has a rectangular cross section.
- the saddle face facing the long side of the cross-sectional rectangle is called the long side face
- the saddle face facing the short side of the rectangle is called the short side face.
- Molten metal is fed into the mold through an immersion nozzle.
- the immersion nozzle has a cylindrical shape with a bottom, and a discharge port is formed in the longitudinal direction of the fabrication space near the lower end of the immersion nozzle, and molten metal is discharged into the mold from the discharge port.
- the discharge flow from the submerged nozzle discharge port travels in the vertical molten metal pool, collides with the vertical side of the vertical mold, and is divided into an upward flow and a downward flow.
- a continuous forged powder is supplied to form a layer, which is melted by the heat of the molten metal and flows into the gap between the mold and the shell to form a powder film.
- it functions as a lubricant between the bowl and the shell.
- the vertical mold always vibrates in the vertical direction (called “oscillation”), promotes the inflow of the powder film, and pulls out the piece. Making it easier.
- unevenness called an oscillation mark is formed on the surface of the strip due to the saddle type oscillation.
- the electromagnetic force acting in this way simultaneously forms an electromagnetic induction flow in the molten metal pool in the vertical mold.
- the electromagnetic induction flow occurs from the shell toward the center of the molten metal pool at the center of the electromagnetic coil in the height direction, and is divided into an upward flow and a downward flow at the center of the pool.
- a rotating flow is formed in which an upward flow occurs at the center of the pool, an outward flow at the meniscus, and a downward flow near the shell.
- a rotating flow is formed in which a downward flow occurs at the center of the pool, an outward flow near the lower end of the electromagnetic coil, and an upward flow near the shell.
- a molten metal injection nozzle having a discharge port opened downward is used, and the discharge port is the center of an electromagnetic coil.
- a continuous forging method is described in which the molten metal is disposed so as to be located at a lower position and the molten metal is injected into the mold from the discharge port of the molten metal injection nozzle.
- the discharge flow from the molten metal injection nozzle has no effect on the rotational flow that flows upward in the center of the molten metal pool.
- the excellent pieces are forged It is said.
- the molten metal that has been subjected to oxygen purification for decarburization in the smelting furnace contains free oxygen
- a deoxidizer with strong oxidizing power in the molten metal to make free oxygen oxide.
- Most of the generated non-metal oxides float and separate from the molten metal, but some are transferred to the tundish while floating in the molten metal. Therefore, the non-metallic inclusions are contained in the molten metal supplied from the tundish via the immersion nozzle into the vertical mold.
- a non-oxidizing gas is blown into the immersion nozzle.
- the injected non-oxidizing gas is taken into the molten metal to form bubbles, and moves with the molten metal.
- These non-metallic inclusions and bubbles in the molten metal are supplied into the vertical mold together with the discharge flow from the discharge port of the immersion nozzle. If non-metallic inclusions or bubbles are taken into the piece, it becomes a quality defect. Therefore, it is preferable that the molten metal in the mold is floated as much as possible and taken into a continuous forged powder covering the meniscus and separated.
- the alternating current is passed through the electromagnetic coil 4 arranged so as to surround the forging space 8 around the mold 1 to control the meniscus shape and improve the surface property of the flake.
- the discharge port 6 of the immersion nozzle 5 is directed upward, and the direction of the discharge flow 14 from the discharge port 6 is directed upward from the intersection A between the vertical short side and the meniscus.
- the discharge flow 14 reaches the meniscus 11 before colliding with the short-side shell 13.
- non-metallic inclusions in the discharge flow The bubbles are absorbed by the continuous forged powder of meniscus 11 at the meniscus arrival part.
- the discharge flow 14 from the discharge port 6 to the meniscus 11 1 receives the electromagnetic force caused by the electromagnetic coil 4 and receives a force from the long side shell toward the center of the blade, so that the discharge flow in the thickness direction of the blade
- the discharge flow 14 can reach the meniscus 11 without contacting the long-side shell 12. Therefore, trapping of non-metallic inclusions and bubbles from the discharge flow 14 to the long-side shell 12 can be suppressed.
- the meniscus shape is controlled by electromagnetic force to improve the surface properties of the flakes, and at the same time, the trapping of non-metallic inclusions and bubbles in the flakes is suppressed, and the flakes have good surface properties and internal quality. Can be manufactured.
- the present invention has been made based on the above findings.
- the gist of the present invention is as follows.
- Molten metal is injected through a submerged nozzle into a mold having a rectangular cross-section fabrication space, and an electromagnetic coil having a current flow path surrounding the fabrication space is arranged around the mold.
- the molten metal provided at the tip of the immersion nozzle
- the discharge flow discharged from the discharge port is formed upward from the horizontal toward the bowl-shaped short piece, and the direction of the center line of the discharge flow is directed upward from the intersection of the bowl-shaped short piece and the meniscus.
- the angle between the opening direction X of the discharge port X and the horizontal direction is 0.8 times the angle between the direction from the discharge port center C to the intersection A of the vertical side of the bowl and the meniscus and the horizontal direction.
- the length of the electromagnetic coil 4 in the forging direction is L, and the center C of the discharge port 6 is located above 1 Z4 ⁇ L from the lower end of the electromagnetic coil 4 (1) or ( The method for continuously producing molten metal as described in 2).
- Fig. 1 is a cross-sectional view showing the state of the discharge flow in the saddle type.
- (A) is a front cross-sectional view with electromagnetic force
- (b) is a side cross-sectional view with electromagnetic force.
- Fig. 2 is a front cross-sectional view showing the situation of the discharge flow in the vertical type, showing three types with different opening directions of the discharge ports.
- Figure 3 shows the relationship between the saddle type and the electromagnetic coil.
- A is a cross-sectional view taken along the arrow A—A
- (b) is a front view
- (c) is a rotational flow caused by electromagnetic force.
- FIG. 1 is a cross-sectional view taken along the arrow A—A
- (b) is a front view
- (c) is a rotational flow caused by electromagnetic force.
- FIG. 4 is a diagram showing how the discharge flow spreads in the vertical direction of the vertical shape.
- (A) and (b) are a cross-sectional plan view and a side cross-sectional view in the presence of electromagnetic force, respectively.
- (C) (d ) Are a plan sectional view and a side sectional view, respectively, when there is no electromagnetic force.
- FIG. 5 is a diagram for explaining the relationship between the shape of the discharge port of the immersion nozzle and the discharge flow.
- FIG. 6 is a diagram showing a case where there are two sets of discharge ports in the forging direction.
- the present invention relates to a method for continuously forging molten metal, and as shown in FIGS. 3 (a) and 1 (a), a forging space 8 having a rectangular cross section is inserted into a mold 1 via an immersion nozzle 5. Inject molten metal 10.
- the rectangle located on the long side of the forged space 8 which is a rectangular cross section is called the rectangle long side 2
- the rectangle located on the short side of the forged space 8 is called the rectangle short side 3.
- an electromagnetic coil 4 having a current flow path surrounding the fabrication space 8 is disposed around the mold 1.
- a coil arrangement is called a solenoid.
- the electromagnetic coil 4 is arranged at a position where the molten metal near the inner meniscus receives a force in the direction of separating from the vertical wall.
- the molten metal in the vicinity of the meniscus in the saddle is subjected to a force in the direction of pulling away from the saddle wall, causing the meniscus to bend strongly, and at the same time, the gap between the saddle and the shell is enlarged to promote powder inflow. It is possible to improve the surface shape of the piece by reducing the oscillation mark.
- the pinch force By passing an alternating current through the electromagnetic coil 4, the pinch force works, and at the same time, an electromagnetic induction flow is formed in the molten metal pool in the bowl.
- the electromagnetic induction flow is generated from the shell toward the center of the molten metal pool at the center of the height direction of the electromagnetic coil 4, and is divided into an upward flow and a downward flow at the center of the pool.
- meniscus A rotating flow 15 that forms an outward flow at the dregs and a downward flow near the shell is formed.
- a rotating flow 15 is formed which is a downward flow at the center of the pool, an outward flow near the lower end of the electromagnetic coil, and an upward flow near the shell.
- the immersion nozzle 5 has a molten metal discharge port 6 that faces in the width direction of the forging space and upwards from the horizontal, and discharges from the discharge port 6.
- the direction of the flow 14 is characterized by being directed upward from the intersection A between the saddle-shaped short side and the meniscus.
- the discharge flow 14 reaches the meniscus 11 before colliding with the short-side shell 13.
- the non-metallic inclusions and bubbles in the discharge flow are absorbed by the meniscus continuous powder at the meniscus arrival part, so that the discharge flow 14 is not as in the conventional technique shown in Fig. 2 (b) and (c).
- Non-metallic inclusions and bubbles are not trapped in the collided short side shells 13.
- the discharge flow 14 from the discharge port 6 to the meniscus 11 1 receives the electromagnetic force caused by the electromagnetic coil 4 and receives a force from the long-side shell toward the center of the blade, the discharge flow 14 in the thickness direction of the blade 14 As shown in FIGS. 1 (b), 4 (a) and (b), the discharge flow 14 can reach the meniscus 11 without contacting the long side shell 12. Therefore, trapping of non-metallic inclusions and bubbles from the discharge flow 14 to the long side shell 12 can be suppressed.
- the meniscus shape is controlled by electromagnetic force to improve the surface properties of the flakes, and at the same time, the trapping of non-metallic inclusions and bubbles in the flakes is suppressed, and the flakes with good surface properties and internal quality are both obtained. It can be manufactured.
- the direction of the opening X of the discharge port 6 X-force is directed upward from the intersection A between the saddle-shaped short side and the meniscus. It can be demonstrated.
- the direction X of the discharge port opening originates from the center C of the discharge port 6 and is the inner periphery of the discharge port.
- Direction W parallel to wall 7 When the inner peripheral wall has a cylindrical shape, a direction parallel to the inner peripheral wall can be defined.
- the inner peripheral wall of the discharge port is tapered, the direction of the taper-shaped symmetry axis may be adopted.
- the effect of the present invention can be exhibited by determining the opening direction X of the discharge port.
- the opening direction X of the discharge port may not match the discharge direction of the discharge flow 14. Therefore, in the actual machine, during continuous forging of steel with electromagnetic force applied, the discharge angle of the discharge port of the immersion nozzle was changed variously, and the relationship between the direction X of the discharge port opening and the direction of the actual discharge flow 14 was investigated. did. Specifically, if the linear velocity of the discharge flow from the discharge port is in the range of 0.5 to 2 m / second, whether the discharge flow directly hits the meniscus or whether it hits the shell of a short short side, etc.
- the angle between the actual discharge flow direction and the horizontal direction should be about 80% of the angle between the discharge port opening direction X and the horizontal direction. I understood.
- straight line Y passes through center C of outlet 6 and angle ⁇ between straight line Y and horizontal direction is 0.8 times the angle 0 between outlet opening direction X and horizontal direction Is illustrated.
- the direction of the discharge flow is usually in the range of 0.8 to 1 times the angle ⁇ between the opening direction X of the discharge port and the horizontal direction.
- the straight line Y is directed upward from the intersection A between the saddle-shaped short side and the meniscus, the direction of the discharge flow 14 can be reliably confirmed. Intersection of mold short side and meniscus Since it can be directed upward from the point A, a more preferable result can be obtained.
- 0.8 times the angle between the opening direction X of the discharge port and the horizontal direction is an angle between the direction from the discharge port center C toward the intersection A of the vertical side of the bowl and the meniscus and the horizontal direction. Bigger than.
- the length of the electromagnetic coil 4 in the manufacturing direction is L. Since the molten metal near the vertical meniscus needs to receive a force in the direction away from the vertical wall by the alternating current flowing through the electromagnetic coil 4, the upper end position of the electromagnetic coil 4 is the position near the vertical meniscus 1 1 become.
- the position of the discharge port 6 of the immersion nozzle 5 of the present invention is such that the discharge flow 14 continues to exert a pinch force from the electromagnetic coil 4 until the discharge flow 14 discharged from the discharge port 6 reaches the meniscus 11. It is preferable to suppress the spread of the discharge flow 14 in the thickness direction of the strip. Therefore, it is preferable that the position in the forging direction at the center of the discharge port 6 is above the lower end position of the electromagnetic coil 4.
- the discharge flow 14 from the discharge port 6 to the meniscus 11 1 is prevented from spreading in the thickness direction of the scissors.
- the discharge flow 14 can be reliably prevented from coming into contact with the long-side shell 12 until it reaches the meniscus 11. If the center C of the discharge port 6 is located above 1 2 * L from the lower end of the electromagnetic coil, preferable.
- each discharge port (6 a, 6 b) is arranged in parallel in the vertical direction (forging direction).
- the opening cross-sectional area of each discharge port can be reduced, and at the same forging speed, the linear velocity of the molten steel from the discharge port can be increased. It can be closer to the opening direction. For this reason, the discharge flow can reach the meniscus more reliably.
- the present invention was applied to a continuous forging apparatus for forging a piece having a cross section of 1200 MI in width and 250 M in thickness.
- the height of the saddle is 900 mm, with a vertical section of 2.5 m directly under the saddle, and a bent part with a bending radius of 7.5 m and a horizontal part that is bent back.
- an electromagnetic coil 4 having a current flow path surrounding the fabrication space 8 is arranged around the mold 1 and an alternating current flows through the electromagnetic coil 4.
- the length L in the forging direction of the electromagnetic coil 4 is 300 mni, and the upper end position of the electromagnetic coil 4 is made to coincide with the meniscus 11 position.
- the immersion nozzle 5 has an outer diameter of 150 mm and an inner diameter of 90 dragons. As shown in FIG. 1 (a), the immersion nozzle 5 has a discharge port 6 facing the width direction of the fabrication space near the lower end of the immersion nozzle. Equivalent diameter) is 60mm, and the distance from meniscus 11 to the outlet center C is 150mm. The number of discharge ports 6 is two. Four types of opening direction X of discharge port 6 were prepared: 30 degrees downward, 10 degrees upward, 20 degrees upward, and 30 degrees upward.
- the opening direction X of the discharge port 6 is changed according to the above four types, and further, with or without the electromagnetic force of the electromagnetic coil 4, and the low-carbon aluminum killed steel is forged at a forging speed of 1.5 m / min. Evaluated the quality. No electromagnetic force, vomiting The standard condition was 30 degrees below the exit.
- the opening direction X of the discharge port For the discharge port upward of 30 degrees, the opening direction X of the discharge port, the direction of the straight line Y, and the direction of the actual discharge flow 14 all reached the meniscus 11 before colliding with the short side shell 13.
- the opening direction X of the discharge port directly reaches the meniscus 1 1, and the direction of the straight line Y is very close to the intersection A of the short side of the saddle and the meniscus, and only reaches slightly above.
- the actual direction of the discharge flow 14 reached the meniscus 11 directly in the present invention example with electromagnetic force, and collided with the short-side shell 13 in the comparative example without electromagnetic force.
- 10 degrees upward and 30 degrees downward all of the opening direction X, the straight line Y direction, and the actual discharge flow direction 14 collided with the short side shell 13 directly.
- the surface roughness was measured with a laser displacement meter. Select a total of 5 lines of 50MI position and 14 width, 1 width, 2 width and 3 Z 4 width from both short sides with respect to the width of the strip, and the spot diameter is 0.2im over a length of 200mm in the forging direction. Measure irregularities on the surface of the scissors while moving the laser displacement meter at a pitch of 0.2MI. The difference between the maximum displacement and the minimum displacement for each 1 Omm length on each line is taken and compared over the entire length, and the maximum value is defined as roughness. Furthermore, the roughness of the sample under the standard manufacturing conditions is set to 1, and the relative roughness is defined as the final definition.
- the internal quality caused by non-metallic inclusions and bubbles was evaluated by the occurrence of surface inclusions, bubble defects, internal inclusions and bubble defects.
- the surface layer is 20 mm deep from the surface of the slab and corresponds to the thickness that solidifies in the slab. What is the inside? Up to 50 dragons deep, it is an area that includes a curved part that forms a defect called an accumulation zone in a vertical bending continuous forging machine.
- milling is performed at a pitch of 1 mm in the thickness direction for a length of 200 mm in the forging direction with the full width of the piece, and the number of inclusions / bubbles is visually counted.
- the discharge flow from the submerged nozzle discharge port does not collide with the short-side shell and does not contact the long-side shell, it reaches the meniscus, so the non-metallic inclusions and It is possible to suppress the trapped air bubbles and improve the internal quality of the piece.
- the surface property of the scissors can be improved by controlling the meniscus shape by applying an alternating current to the electromagnetic coil arranged so as to surround the fabrication space around the saddle shape.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/516,061 US8210239B2 (en) | 2006-12-05 | 2007-12-03 | Continuous casting method of molten metal |
EP07832987.7A EP2092998B1 (en) | 2006-12-05 | 2007-12-03 | Molten metal continuous casting method |
AU2007329897A AU2007329897B2 (en) | 2006-12-05 | 2007-12-03 | Molten metal continuous casting method |
CA2671213A CA2671213C (en) | 2006-12-05 | 2007-12-03 | Continuous casting method of molten metal |
KR1020097011511A KR101108316B1 (ko) | 2006-12-05 | 2007-12-03 | 용융 금속의 연속 주조 방법 |
BRPI0719926-0A BRPI0719926B1 (pt) | 2006-12-05 | 2007-12-03 | Método de lingotamento contínuo de metal fundido |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-328273 | 2006-12-05 | ||
JP2006328273A JP4585504B2 (ja) | 2006-12-05 | 2006-12-05 | 溶融金属の連続鋳造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008069329A1 true WO2008069329A1 (ja) | 2008-06-12 |
Family
ID=39492203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/073731 WO2008069329A1 (ja) | 2006-12-05 | 2007-12-03 | 溶融金属の連続鋳造方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8210239B2 (ja) |
EP (1) | EP2092998B1 (ja) |
JP (1) | JP4585504B2 (ja) |
KR (1) | KR101108316B1 (ja) |
AU (1) | AU2007329897B2 (ja) |
BR (1) | BRPI0719926B1 (ja) |
CA (1) | CA2671213C (ja) |
TW (1) | TW200900181A (ja) |
WO (1) | WO2008069329A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102151811B (zh) * | 2011-03-09 | 2013-06-26 | 钢铁研究总院 | 一种捕获连铸夹杂物的方法及其浸入式水口 |
JP2013123717A (ja) * | 2011-12-13 | 2013-06-24 | Nippon Steel & Sumitomo Metal Corp | 金属の連続鋳造方法 |
EP3145659B1 (en) | 2014-05-21 | 2021-06-30 | Novelis, Inc. | Mixing eductor nozzle and flow control device |
KR101946449B1 (ko) * | 2016-08-25 | 2019-02-11 | 메탈젠텍주식회사 | 주조용 침지노즐 |
KR102490142B1 (ko) * | 2016-09-16 | 2023-01-19 | 닛테츠 스테인레스 가부시키가이샤 | 연속 주조법 |
ES2920053T3 (es) * | 2017-03-03 | 2022-08-01 | Nippon Steel Stainless Steel Corp | Método de colada continua |
WO2024127075A1 (en) * | 2022-12-16 | 2024-06-20 | Arcelormittal | Continuous casting equipment |
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JPS4888029A (ja) * | 1972-02-03 | 1973-11-19 | ||
JPS50145324A (ja) * | 1974-05-14 | 1975-11-21 | ||
JPS5232824A (en) | 1975-09-09 | 1977-03-12 | Nippon Steel Corp | Method of casting metal melts |
JPH11188460A (ja) | 1997-12-26 | 1999-07-13 | Nippon Steel Corp | 溶融金属の連続鋳造方法 |
JP2000280050A (ja) * | 1999-03-30 | 2000-10-10 | Furukawa Electric Co Ltd:The | 竪型連続鋳造用注湯ノズルおよび前記注湯ノズルを用いた竪型連続鋳造方法 |
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BE794857A (fr) * | 1972-02-03 | 1973-05-29 | Voest Ag | Procede de separation d'inclusions non metalliques dans les metaux en fusion, et tubes de coulee pour l'accomplissement du procede |
AT332579B (de) * | 1974-06-25 | 1976-10-11 | Voest Ag | Giessrohr mit einer bodenoffnung zum kontinuierlichen stahlstranggiessen |
JPS58112641A (ja) * | 1981-12-28 | 1983-07-05 | Nippon Steel Corp | 連続鋳造における非金属介在物低減法 |
JPS6352756A (ja) * | 1986-08-21 | 1988-03-05 | Nippon Steel Corp | 連続鋳造用浸漬ノズル |
DE69530567T2 (de) * | 1994-08-23 | 2004-04-08 | Nippon Steel Corp. | Verfahren und vorrichtung zum kontinuierlichen giessen von metallschmelze |
JPH10166120A (ja) | 1996-12-06 | 1998-06-23 | Sumitomo Metal Ind Ltd | 溶融金属の連続鋳造方法 |
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KR19990050906A (ko) | 1997-12-17 | 1999-07-05 | 이구택 | 침지노즐 침적깊이 최적화에 의한 주편 표면 결함 저감방법 |
FR2805483B1 (fr) * | 2000-02-29 | 2002-05-24 | Rotelec Sa | Equipement pour alimenter en metal en fusion une lingotiere de coulee continue, et son procede d'utilisation |
CA2426223A1 (en) * | 2000-10-27 | 2002-05-02 | The Ohio State University | Method and apparatus for controlling standing surface wave and turbulence in continuous casting vessel |
-
2006
- 2006-12-05 JP JP2006328273A patent/JP4585504B2/ja active Active
-
2007
- 2007-12-03 US US12/516,061 patent/US8210239B2/en active Active
- 2007-12-03 EP EP07832987.7A patent/EP2092998B1/en not_active Not-in-force
- 2007-12-03 AU AU2007329897A patent/AU2007329897B2/en not_active Ceased
- 2007-12-03 WO PCT/JP2007/073731 patent/WO2008069329A1/ja active Application Filing
- 2007-12-03 CA CA2671213A patent/CA2671213C/en not_active Expired - Fee Related
- 2007-12-03 BR BRPI0719926-0A patent/BRPI0719926B1/pt active IP Right Grant
- 2007-12-03 KR KR1020097011511A patent/KR101108316B1/ko active IP Right Grant
- 2007-12-04 TW TW096146041A patent/TW200900181A/zh not_active IP Right Cessation
Patent Citations (5)
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JPS4888029A (ja) * | 1972-02-03 | 1973-11-19 | ||
JPS50145324A (ja) * | 1974-05-14 | 1975-11-21 | ||
JPS5232824A (en) | 1975-09-09 | 1977-03-12 | Nippon Steel Corp | Method of casting metal melts |
JPH11188460A (ja) | 1997-12-26 | 1999-07-13 | Nippon Steel Corp | 溶融金属の連続鋳造方法 |
JP2000280050A (ja) * | 1999-03-30 | 2000-10-10 | Furukawa Electric Co Ltd:The | 竪型連続鋳造用注湯ノズルおよび前記注湯ノズルを用いた竪型連続鋳造方法 |
Also Published As
Publication number | Publication date |
---|---|
AU2007329897A1 (en) | 2008-06-12 |
BRPI0719926B1 (pt) | 2015-08-11 |
EP2092998A4 (en) | 2016-10-12 |
CA2671213A1 (en) | 2008-06-12 |
TWI379719B (ja) | 2012-12-21 |
AU2007329897B2 (en) | 2010-08-05 |
KR20090089360A (ko) | 2009-08-21 |
EP2092998B1 (en) | 2019-08-14 |
BRPI0719926A2 (pt) | 2011-11-08 |
EP2092998A1 (en) | 2009-08-26 |
TW200900181A (en) | 2009-01-01 |
JP4585504B2 (ja) | 2010-11-24 |
US20100059197A1 (en) | 2010-03-11 |
KR101108316B1 (ko) | 2012-01-25 |
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US8210239B2 (en) | 2012-07-03 |
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