KR20170036973A - Continuous casting method for cast slab - Google Patents

Continuous casting method for cast slab Download PDF

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Publication number
KR20170036973A
KR20170036973A KR1020150135925A KR20150135925A KR20170036973A KR 20170036973 A KR20170036973 A KR 20170036973A KR 1020150135925 A KR1020150135925 A KR 1020150135925A KR 20150135925 A KR20150135925 A KR 20150135925A KR 20170036973 A KR20170036973 A KR 20170036973A
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South Korea
Prior art keywords
mold
immersion nozzle
cast steel
pair
long
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KR1020150135925A
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Korean (ko)
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KR101941877B1 (en
Inventor
권상흠
한상우
원영목
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주식회사 포스코
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Priority to KR1020150135925A priority Critical patent/KR101941877B1/en
Priority to JP2017536931A priority patent/JP6461357B2/en
Priority to CN201680008280.8A priority patent/CN107206476B/en
Priority to EP16848756.9A priority patent/EP3354371B1/en
Priority to PCT/KR2016/005922 priority patent/WO2017052030A1/en
Priority to BR112017016554A priority patent/BR112017016554A2/en
Publication of KR20170036973A publication Critical patent/KR20170036973A/en
Application granted granted Critical
Publication of KR101941877B1 publication Critical patent/KR101941877B1/en

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    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • 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
    • B22D11/055—Cooling the 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The present invention relates to a continuous casting method of slab, controlling a shrinkage cavity and segregation generated inside slab. According to one embodiment of the present invention, the continuous casting method of the slab comprises: a step of primarily cooling the slab using a mold while injecting molten steel into an area which is eccentric from a center portion inside of a mold in a thickness direction of the slab; and a step of secondarily cooling by sprinkling cooling water to a surface of the slab while withdrawing the slab primarily cooled by the mold.

Description

TECHNICAL FIELD [0001] The present invention relates to a continuous casting method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting method for casting steels, and more particularly, to a continuous casting method for casting cast steel that controls the position of segregation and shrinkage holes generated in a cast steel.

Generally, steel mills produce semi-finished steel products in continuous casting process by using molten steel produced through steelmaking process and steelmaking process, and produced steel is produced as coil with thickness desired by consumer in rolling process.

FIG. 1 is a schematic view showing a general performance facility, and FIG. 2 is a schematic view showing a solidification structure of a casting manufactured in a general performance facility.

As shown in FIG. 1, refined molten steel 1 is cast in the ladle 10 in a steelmaking process, moved to a continuous casting plant, and then placed on top of the tundish 20. The molten steel 1 accommodated in the ladle 10 is injected into the tundish 20 through the shroud nozzle 11 and the molten steel 1 injected from the tundish 20 is injected through the immersion nozzle 21 And is continuously injected into the mold 30. The molten steel 1 supplied to the mold 30 is cooled primarily by passing through the mold 30 and then drawn out and pressed by the plurality of segment rolls 40. At the same time, (2).

The cast steel 2 thus continuously cast is cut to a predetermined length by the cutter 50 and conveyed to the subsequent rolling process by the conveying roller 60.

Particularly, when the cast steel 2 is rolled into a steel plate, defects of the cast steel 2 may remain after rolling and cause defects. As an example of such a defect, there are a solidification shrinkage hole and a center segregation occurring in the central portion in the thickness direction of the cast steel as shown in Fig.

When the molten solids concentration concentrated molten steel is collected in the solidification shrinkage portion in the vicinity of the solidification completion point of the continuous casting process, this becomes segregation (4). If the solidification shrinkage portion is left unfilled and remains as a space, the solidification shrinkage hole (3) porosity), and these defects remain in the center of the cast steel even after the steel plate is rolled.

In addition, tensile stress is generated in the center portion of the cast steel while the steel plate is rolled / cooled. In the cooling process after rolling, the surface of the cast steel has a temperature lower than that of the center, and due to this temperature difference, the thickness center of the cast steel is under tensile stress. Particularly, as the thickness of the cast steel becomes thicker, the magnitude of the tensile stress due to the temperature difference becomes larger. When the tensile stress concentrates on the segregation (4) and the solidification shrinkage hole (3) Resulting in product failure.

A typical technique for reducing such defects as the center segregation 4 and the solidification shrinkage hole 3 that cause product failure is soft reduction. The light-rolling reduction technique is to apply a descent force to the cast steel 2 by the segment roll 40 during continuous casting, in which the cast steel 2 is pressed down by the solidification shrinkage at the final solidification stage to physically compress the solidification shrinkage cavity 3 , It is possible to minimize pores due to solidification shrinkage and prevent the molten steel in which the solute existing between the main phase phases due to coagulation shrinking from being introduced into the center of the slurry thickness, . However, such a soft-pressing technique requires a large-scale pressing device to be installed in the casting machine, and the segregation (4) and the solidification shrinkage hole (3) can not be sufficiently removed because the rolling is performed at the end of solidification.

Even if the generation of the center segregation 4 and the solidification shrinkage hole 3 is suppressed, a part remains in the central portion of the thickness of the cast steel / product, and the tensile stress generated at the rolling / A defect is generated in the center of the thickness. Particularly, when the thickness of the cast steel 2 is thick or accelerated cooling is performed in the rolling process, the temperature difference between the center portion of the thickness and the surface becomes larger, and the occurrence of product failure further increases.

The technique for reducing the defects such as the center segregation 4 and the solidification shrinkage hole 3 is to improve the structure of the discharge port of the immersion nozzle 21, particularly the immersion nozzle 21, . However, although these methods are intended to suppress the generation of the center segregation 4 and the solidification / shrinkage cavity 3, there is a problem that the center segregation 4 and the solidification / shrinkage cavity 3 can not be completely removed.

Japanese Patent Application Laid-Open No. 10-2001-321901 (November 20, 2001) Korean Patent Publication No. 10-2011-0017418 (Feb. 21, 2011) Japanese Laid-Open Patent Publication No. 10-1997-192806 (1997. 29. 29)

The present invention provides a continuous casting method for casting casting by controlling the position of the segregation and shrinkage holes generated in the cast steel by changing the position of the immersion nozzle for supplying molten steel to the mold.

According to an aspect of the present invention, there is provided a continuous casting method for a cast steel, comprising the steps of: firstly cooling molten steel by a mold while injecting the molten steel into a region eccentric in the thickness direction of the cast steel at a central portion thereof; And drawing the casting that is firstly cooled by the mold while sprinkling cooling water on the surface thereof to thereby perform secondary cooling.

In the first cooling step, an immersion nozzle is drawn into a mold having a pair of long sides and a pair of short sides arranged opposite to each other, and molten steel is injected into the mold, And is eccentric in the long-side direction.

In the second cooling step, the cast steel is pulled downward from the mold and bent forward, and in the first cooling step, the direction in which the immersion nozzle is eccentric is a direction in which the main body is pulled out of a pair of long sides And is a long side direction disposed on the front side as a reference.

The difference between the distance d1 between the immersion nozzle and the long side selected from the pair of long sides and the distance d2 between the immersion nozzle and the other long side among the pair of long sides in the first cooling step is 20 mm or more .

The distance d1 between the immersion nozzle and the long side selected from the pair of long sides and the distance d2 between the immersion nozzle and the other long side of the pair of long sides in the first cooling step are each 10 mm or more do.

(D1: d2) between a distance (d1) between the immersion nozzle and a long side selected from a pair of long sides and a distance (d2) between the immersion nozzle and another long side of the pair of long sides in the first cooling step, ) Is 1: 3.

In the second cooling step, the cast steel is pulled downward from the mold and bent forward, and the cooling water sprinkled on the upper portion of the cast steel until the casted steel is completely solidified is cooled And the amount of cooling water sprinkled on the lower portion of the main shaft is kept to be greater than or equal to the amount of cooling water sprinkled on the upper portion of the main shaft after the main shaft is completely solidified.

According to the embodiment of the present invention, molten steel is injected into the eccentric region in the thickness direction of the cast steel by changing the position of the immersion nozzle disposed inside the mold, There is an effect that it can move from the center portion to the surface direction.

By moving the segregation and coagulation shrinkage holes in the direction of the surface, the coagulation shrinkage hole can be pressed more easily during the rolling process of the cast steel, and there is no segregation at the position where the maximum tensile stress is generated in the cooling process after rolling, The internal defects of the final product can be reduced.

FIG. 1 is a view schematically showing a general performance facility,
Fig. 2 is a schematic view showing the solidification structure of cast steel produced in a general casting facility,
FIG. 3A is a view showing the position of an immersion nozzle in a mold in a general performance facility,
FIG. 3B is a view showing the position of the immersion nozzle in the mold applied to the continuous casting method of the cast steel according to the embodiment of the present invention,
FIG. 4 is a flow and temperature analysis result for molten steel in a mold to which a continuous casting method of cast steel according to an embodiment of the present invention is applied,
5 is a photograph of a cast steel produced according to a continuous casting method of cast steel according to an embodiment of the present invention,
FIG. 6 shows the result of the compression simulation according to the coagulation hole position during rolling,
7 is a schematic view showing the center segregation and the stress distribution remaining in the product.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

FIG. 3A is a view showing a position of an immersion nozzle in a mold in a general performance facility, FIG. 3B is a view showing a position of an immersion nozzle in a mold applied to a continuous casting method of casting according to an embodiment of the present invention, FIG. 4 is a graph showing the results of flow and temperature analysis for molten steel in a mold to which a continuous casting method according to an embodiment of the present invention is applied. FIG. 6 is a compression simulation result according to the solidification shrinkage hole position at the time of rolling, and FIG. 7 is a schematic view showing the center segregation and stress distribution remaining in the product.

As shown in the drawing, a continuous casting method of cast steel according to an embodiment of the present invention is performed using the general casting facility shown in FIG. The position of the immersion nozzle 21 for injecting the molten steel 1 accommodated in the tundish 20 into the mold 30 is changed to change the injection position of the molten steel 1 into the mold 30.

The continuous casting method according to an embodiment of the present invention is a method for continuously casting molten steel 1 in a mold 30 while injecting the molten steel 1 from a central portion of the inside of the mold 30 into an eccentric region in the thickness direction of the cast steel 2 ≪ / RTI > And drawing the cast steel (2) to be primarily cooled by the mold (30) while sprinkling cooling water on the surface thereof to thereby perform secondary cooling.

3A, the position of the immersion nozzle 21a is changed to the position of the mold 30 (FIG. 3A) in order to inject the molten steel 1 into the area eccentrically in the width direction of the cast steel 2, The position of the immersion nozzle 21b is arranged in an area eccentric in the width direction of the cast strip 2 as shown in FIG. Specifically, the mold 30 is composed of a pair of long sides 30a and 30b and a pair of short sides 30c and 30d which are arranged to face each other and opposed to each other. At this time, the immersion nozzle 21b has a pair of long sides 30a, and 30b, respectively.

Therefore, the flow strength (flow velocity) of the molten steel 1 in the eccentric region is induced to act larger than other regions. Then, the result shown in FIG. 4 (a) can be obtained. In FIG. 4 (a), the area indicated by a red color is a region having a larger flow intensity, and the flow velocity is not different in each area on the bath surface. However, in the region below 2 m from the bath surface, a stronger flow field is formed . The temperature field in this region is shown in Fig. 4 (b), and it can be confirmed that the temperature varies in the thickness direction similar to the flow field. In FIG. 4 (b), the red color region is a region having a relatively high temperature, and a temperature difference indicates that the completion of solidification occurs in the eccentric direction rather than in the center portion of the thickness.

1, a plurality of segment rolls 40, which are drawn out while pressing the cast strip 2 downwardly of the mold 30, are bent and disposed in a forward direction as shown in FIG. 1. At this time, in the direction in which the immersion nozzle 21 is eccentrically Is preferably disposed in the direction of the long side 30a disposed in front of the pair of long sides 30a and 30b with respect to the direction in which the piece 2 is pulled out. Thus, the direction in which the immersion nozzle 21 is eccentric is set to be the direction of the top surface of the cast piece 2 to be drawn. The point where the solidification is completed in the direction of the upper region is eccentrically eccentric to the position where the segregation 4 and the solidification / shrinkage hole 3 are generated in the direction of the upper surface of the cast steel 2 .

Next, the degree to which the immersion nozzle 21 is eccentric will be described.

As shown in FIG. 3B, the immersion nozzle 21 located at the center of the mold 30 is generally moved in the direction of the arrow to perform casting. The distance between the immersion nozzle 21 and the selected long side 30a of the pair of long sides 30a and 30b is defined as d1 and the distance between the immersion nozzle 21 and the pair of long sides 30a and 30b And the distance between the other long side 30b is defined as 'd2'.

Thus, the immersion nozzle 21 was arranged so that the length ratios d1 and d2 of d2 / d1 were 1, 3, 4, and 7, respectively. At this time, it was confirmed that as the length difference between d1 and d2 increases, the position where the solidification is completed moves toward the surface direction, not the thickness center of the cast strip (2). In other words, it was confirmed that the solidification / shrinkage cavity 3 and the segregation 4 move in the surface direction, not the thickness center portion. However, the difference between d1 and d2 is required to be 20 mm or more. Otherwise, the production position of the segregation column (4) and the solidification shrinkage hole (3) does not deviate much from the center of the cast steel (2) But it was not effective. If the length of either one of d1 and d2 is less than 10 mm, the molten steel which is discharged may strongly collide with the solidified solidified layer to redissolve the solidified layer to cause an accident.

Therefore, it is advantageous to move the coagulation completion position as the difference between d1 and d2 is larger than 20 mm and the difference is larger, but it is preferable that d1 and d2 are both 10 mm or more so that the immersion nozzle 21 is disposed. Preferably, the length ratio (d1: d2) between d1 and d2 is 1: 3.

5 shows that when the length ratio d1 and d2 of d1 and d2 is 1: 3 as a result of casting, a red color indicates a relatively high temperature region, But it is shifted upwards. That is, the position of the immersion nozzle 21 is changed to change the flow and the temperature field, and the position where the solidification is completed can be shifted to one side rather than the center of thickness. Therefore, the segregation stones 4 and the solidification shrinkage holes 3 are formed eccentrically at predetermined intervals in the direction of the top surface, not in the center in the thickness direction of the slab 2. However, if d2 is larger than d1, the segregation 4 and the solidification / shrinkage cavity 3 are formed too eccentrically on the surface of the cast steel 2, so that the defect is exposed to the surface in the rolling process, The length ratio d1: d2 between d1 and d2 is preferably maintained at 1: 3.

As the molten steel 1 is injected by eccentrically aligning the position of the immersion nozzle 21 as described above, the flow and temperature field of the molten steel 1 are changed so that the point where the solidification is completed is eccentrically directed toward the upper surface of the cast steel 2 In this case, the bending of the billet 2 is caused by the residual stress due to the difference in cooling occurring during the solidification between the upper and lower surfaces of the billet 2, which makes it difficult to feed the billet 2 to the conveying roller 60 May cause problems.

In order to prevent such a problem from occurring, in this embodiment, cooling water sprinkled on the upper part of the cast steel 2 until the time when the cast steel 2 pulled out in the second cooling step is completely solidified is lower than the lower part of the cast steel 2 And the amount of cooling water sprinkled on the lower part of the casting 2 is greater than or equal to the amount of cooling water sprinkled on the upper part of the casting 2 from the point of time when the casting 2 is completely solidified, .

Next, the effect that the segregation 4 and the solidification shrinkage hole 3 generated at the time of manufacturing the cast steel 2 can be expected to be eccentric from the center in the thickness direction of the cast steel 2 in the direction of the top surface will be described.

First, the internal defects of the heavy plate products are confirmed by ultrasonic inspection. In ultrasonic flaw detection, defects are mostly detected in the center of thickness of heavy plate products due to coagulation shrinkage hole (3) and segregation (4) that occur in the center of thickness during continuous casting. Even if the same solidification shrinkage hole 3 and segregation 4 occur in the cast steel 2, defects are easily detected in the ultrasonic inspection as the product is made into a high-strength and low-strength steel product, because of the following reasons.

First, as the product becomes thicker, the rolling amount of the cast steel 2 is reduced and the pressing of the solidification shrinkage hole 3 becomes difficult. In particular, since the deformation of the central portion of the thickness of the cast steel 2 during rolling is smaller than that of the surface, the coagulation shrinkage hole 3 is more difficult to be pressed. 6, it can be seen that the coagulation shrinkage hole 3b located at a thickness of 1 / 4t thickness is better pressed than the coagulation shrinkage hole 3a at the center of the thickness, even if rolling is performed with the same amount of reduction. If the extreme post material is produced in a state in which the thickness of the coagulation shrinkage hole 2 is determined, the amount of the rolled material must be relatively small, making it more difficult to squeeze the coagulation shrinkage hole 3.

However, when the solidification shrinkage hole 3 is eccentrically located in the upper surface direction rather than the center of the thickness of the slab 2, the pores are pressed more easily, thereby reducing defects due to ultrasonic inspection.

In addition, the product produced after the rolling of the slab (2) is cooled from the surface. That is, the surface of the product is in a low temperature state, and the inside is relatively high temperature, thereby causing a tensile stress in the center of the thickness of the product. Particularly, when the segregation (4) is present in the center of the cast steel (2), cracks are easily generated due to stress concentration and propagate, which causes defects in ultrasonic inspection. In particular, the higher the strength of the heavy plate products, the greater the tensile stress becomes, and the higher the defect occurrence rate.

Therefore, even if the segregation 4 and the solidification / shrinkage hole 3 are not completely removed as in the present embodiment, by moving the generation position of the segregation 4 and the solidification / shrinkage hole 3 as shown in Fig. 7, And there is no segregation 4 at the position where the maximum tensile stress is generated in the cooling process, thereby preventing crack propagation, thereby reducing the defects of the final product.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

1: molten steel 2: cast steel
3: solidification shrinkage ball 4: segregation
10: ladle 11: shroud nozzle
20: tundish 21: immersion nozzle
30: mold 30a, 30b: long side
30c, 30d: Short side 40: Segment roll
50: Cutter 60: Feed roller

Claims (7)

As a method for continuously casting a cast steel,
Cooling the molten steel by a mold while injecting the molten steel from a central portion of the mold interior to an eccentric region in the thickness direction of the casting;
And drawing the cast steel which is firstly cooled by the mold while sprinkling cooling water on the surface of the cast steel so as to be secondarily cooled.
The method according to claim 1,
In the first cooling step, an immersion nozzle is drawn into a mold having a pair of long sides and a pair of short sides arranged opposite to each other, and molten steel is injected into the mold, Wherein the first and second grooves are eccentric in the long-side direction.
The method of claim 2,
In the second cooling step, the cast steel is drawn downward from the mold and bent forward,
Wherein the direction of eccentricity of the immersion nozzle is a long-side direction in which the direction of eccentricity of the immersion nozzle is disposed in front of a pair of long sides with respect to a direction in which the main piece is pulled out.
The method of claim 2,
The difference between the distance d1 between the immersion nozzle and the long side selected from the pair of long sides and the distance d2 between the immersion nozzle and the other long side among the pair of long sides in the first cooling step is 20 mm or more By weight.
The method of claim 2,
The distance d1 between the immersion nozzle and the long side selected from the pair of long sides and the distance d2 between the immersion nozzle and the other long side of the pair of long sides in the first cooling step are each 10 mm or more The continuous casting method.
The method of claim 2,
(D1: d2) between a distance (d1) between the immersion nozzle and a long side selected from a pair of long sides and a distance (d2) between the immersion nozzle and another long side of the pair of long sides in the first cooling step, ) Is 1: 3.
The method of claim 2,
In the second cooling step, the cast steel is drawn downward from the mold and bent forward,
The cooling water to be sprinkled on the upper portion of the cast steel is maintained to be larger than the cooling water to be sprinkled on the lower portion of the cast steel until the drawn cast steel is completely solidified,
Wherein the amount of cooling water sprinkled on the lower portion of the casting is kept to be greater than or equal to the amount of cooling water sprinkled on the upper portion of the casting from the point of time when the casting pieces are completely solidified.
KR1020150135925A 2015-09-24 2015-09-24 Continuous casting method for cast slab KR101941877B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020150135925A KR101941877B1 (en) 2015-09-24 2015-09-24 Continuous casting method for cast slab
JP2017536931A JP6461357B2 (en) 2015-09-24 2016-06-03 Continuous casting method for slabs
CN201680008280.8A CN107206476B (en) 2015-09-24 2016-06-03 Continuous slab casting method
EP16848756.9A EP3354371B1 (en) 2015-09-24 2016-06-03 Continuous slab casting method
PCT/KR2016/005922 WO2017052030A1 (en) 2015-09-24 2016-06-03 Continuous slab casting method
BR112017016554A BR112017016554A2 (en) 2015-09-24 2016-06-03 continuous plate casting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150135925A KR101941877B1 (en) 2015-09-24 2015-09-24 Continuous casting method for cast slab

Publications (2)

Publication Number Publication Date
KR20170036973A true KR20170036973A (en) 2017-04-04
KR101941877B1 KR101941877B1 (en) 2019-01-25

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EP (1) EP3354371B1 (en)
JP (1) JP6461357B2 (en)
KR (1) KR101941877B1 (en)
CN (1) CN107206476B (en)
BR (1) BR112017016554A2 (en)
WO (1) WO2017052030A1 (en)

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