WO2018008814A1 - Gabarit de coulée et procédé de coulée l'utilisant - Google Patents

Gabarit de coulée et procédé de coulée l'utilisant Download PDF

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Publication number
WO2018008814A1
WO2018008814A1 PCT/KR2016/014020 KR2016014020W WO2018008814A1 WO 2018008814 A1 WO2018008814 A1 WO 2018008814A1 KR 2016014020 W KR2016014020 W KR 2016014020W WO 2018008814 A1 WO2018008814 A1 WO 2018008814A1
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WIPO (PCT)
Prior art keywords
jig
mold
molten steel
casting
mold flux
Prior art date
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PCT/KR2016/014020
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English (en)
Korean (ko)
Inventor
원영목
정성훈
변윤기
Original Assignee
주식회사 포스코
Priority date (The priority date 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 date listed.)
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Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to DE112016007049.7T priority Critical patent/DE112016007049T5/de
Priority to CN201680088394.8A priority patent/CN109562443A/zh
Publication of WO2018008814A1 publication Critical patent/WO2018008814A1/fr

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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
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • 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
    • B22D11/111—Treating the molten metal by using protecting powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like

Definitions

  • the present invention relates to a casting jig and a casting method using the same, and more particularly to a casting jig and a casting method using the same to suppress the deformation of the mold flux to improve the quality and productivity of the cast.
  • the cast steel is produced while the molten steel contained in the mold is cooled through the cooling table.
  • the continuous casting process injects molten steel into a mold having a constant internal shape and continuously draws the reacted slabs into the lower side of the mold to produce semi-finished products of various shapes such as slabs, blooms, billets, beam blanks, and the like. It is a process.
  • the cast steel is first cooled in the mold, and after passing through the mold, water is injected into the cast steel to solidify through a process of secondary cooling.
  • the molten steel solidifies from the edge of the mold, whereby the mold periodically vibrates to generate friction, which causes continuous molten steel injection and solidification in the mold.
  • the mold flux is injected into the upper portion of the molten steel in the mold so that lubrication can proceed smoothly during the vibration of the mold. Mold flux flows between the solidified layer of the molten steel and the mold to minimize friction and plays an important role in controlling the heat transfer rate between the molten steel and the mold.
  • the high-Al-containing high Mn case because of the very high concentration of the Al component in the reaction with SiO 2 of the Al component in the molten steel mold slag mold flux as Equation 1 below SiO 2 in the molten steel course is reduced, and Al 2 O 3 will increase.
  • the modification speed is increased.
  • the Al component in the molten steel is picked up into the mold slag by the reaction as shown in Equation 1, and as the casting proceeds, that is, as the casting length increases, pickup of the Al component in the mold slag is accelerated, thereby Al 2 O 3
  • the ingredients are concentrated.
  • SiO 2 in the mold slag is reduced to change the viscosity, basicity and solidification temperature of the mold flux.
  • Such deformation of the mold flux accelerates the growth of slag bears or rims formed on the inner wall of the mold, suppresses the flow of the mold flux between the mold and the molten steel, and prevents the heat transfer during the initial solidification of the molten steel to prevent the heat transfer.
  • the localized solidification layer non-uniformity in the vicinity causes large duty free cracks in the cast steel. These large duty-free cracks are difficult to remove cracks by Scarfing or Grinding process, it is inevitable to increase the production cost due to the failure cost.
  • the present invention provides a casting jig and a casting method using the same that can reduce the deformation of the mold flux by reducing the contact area between the molten steel and the mold flux.
  • the present invention provides a casting jig and a casting method using the same that can improve the casting efficiency and cast quality.
  • Casting jig is a jig that is injected into the molten steel in the mold during casting, the specific gravity of the jig has a specific gravity less than the specific gravity of the molten steel and greater than the specific gravity of the mold flux disposed on the molten steel. It may include a refractory.
  • the jig may include a body having an area smaller than that of the molten steel in the mold, and a grip provided on an upper surface of the body.
  • the body may be formed in a plate shape.
  • the body may be formed in a box shape with an open lower portion.
  • the body may be formed in a frame shape having a size smaller than the area of the molten steel in the mold.
  • Sides of the body may be provided with a protrusion protruding outward.
  • the jig may have a specific gravity of 3.0 to 6.5 g / cm 3.
  • the jig may have a specific gravity of 3.0 to 3.2 g / cm 3.
  • the jig may have a thickness of 20 to 50 mm.
  • Casting method the casting method, the process of injecting molten steel into the mold; Supplying a mold flux to the molten steel; Putting a jig including refractory on the molten steel to contact at least a part of the jig with the molten steel and at least a part of the jig with the mold flux; And solidifying the molten steel to cast the cast steel, and in the process of casting the cast steel, an area of the molten steel contacting the mold flux using the jig may be smaller than a molten surface area of the molten steel in the mold. .
  • the jig may be disposed on both sides of an immersion nozzle for injecting molten steel into the mold.
  • At least a part of the edge of the jig may be spaced apart from the inner wall of the mold.
  • mold flux may be injected between the jig and the mold inner wall.
  • the jig is formed in a frame shape having a size smaller than the area of the molten steel in the mold, and includes a first area formed inside the jig and a second area formed between the jig and an inner wall of the mold.
  • the molten mold flux may be supplied to the first region and the second region.
  • the jig is formed in a frame shape having a size smaller than the area of the molten steel in the mold, and includes a first area formed inside the jig and a second area formed between the jig and an inner wall of the mold.
  • the solid mold flux may be supplied to the first region, and the molten mold flux may be supplied to the second region.
  • the cast steel may include the step of measuring the level of the molten steel by measuring the position of the jig.
  • the area of contact between molten steel and the mold flux during casting can be reduced to suppress the reaction between inclusions in the molten steel and the mold flux. Accordingly, by suppressing the deformation of the mold flux, it is possible to suppress the formation of slag bear on the inner wall of the mold, thereby facilitating the inflow of the mold flux between the inner wall of the mold and the molten steel. Therefore, during the casting of the cast steel, the lubrication action by the mold flux, the heat generation function and the thermal cutoff function by the mold flux can be smoothed to uniformly solidify the molten steel. In addition, it is possible to suppress defects of the slab due to the slag bear to improve the quality and productivity of the slab.
  • 1 is a view schematically showing a casting facility.
  • FIG. 2 is a view showing a state inside the mold when performing the casting by the casting method according to the prior art.
  • Figure 3 is a graph showing the component changes of the mold flux when casting by the casting method according to the prior art.
  • Figure 4 is a view schematically showing the configuration of the casting jig according to an embodiment of the present invention.
  • FIG. 8 is a flowchart sequentially showing a casting method according to an embodiment of the present invention.
  • FIG. 10 is a graph showing a comparison of the temperature change of a mold during casting with a test player.
  • FIG. 1 is a view schematically showing a casting facility
  • Figure 2 is a view showing the internal state of the mold when performing the casting by the casting method according to the prior art
  • Figure 3 is a mold flux when casting by the casting method according to the prior art
  • the casting equipment receives molten steel through a ladle 10 containing molten steel refined in a steelmaking process and an injection nozzle connected to the ladle 10, for example, a shroud nozzle (not shown).
  • the mold 30 for temporarily storing and supplying molten steel through the tundish 20 to supply the mold 30 and the immersion nozzle 22 connected to the tundish 20 and initially to a predetermined shape in a predetermined shape.
  • a cooling line 40 provided below the mold 30 and having a plurality of segments continuously arranged to perform a series of molding operations while cooling the non-solidified slabs 1 drawn from the mold 30. Can be.
  • a mold flux is formed on the upper portion of the molten steel injected into the mold 30.
  • the mold flux may be supplied to the upper part of the molten steel in a solid state, such as a powder state, or may be supplied to a liquid molten mold flux in which the solid phase flux is dissolved.
  • a mold flux is demonstrated, and it is called a mold flux.
  • the mold flux flows between the inner wall of the mold 30 and the molten steel by lubrication applied to the mold 30 to lubricate the molten steel, that is, the solidification cell Mc, of the mold 30. 30) to the bottom.
  • the mold flux may perform functions such as absorption and removal of inclusions in the molten steel, thermal insulation of the molten steel, and heat transfer rate control along with a lubricating action.
  • SiO 2 component of the mold flux of the casting is brought generate Al 2 O 3 reacts with the inclusions, such as Al component in the molten steel, thus generated Al 2 O 3 is attached and solidified in the mold 30, the inner wall slag bear (R ).
  • the reaction reduces the SiO 2 component of the mold flux to increase the basicity (CaO / SiO 2 ) of the molten mold flux, thereby increasing the viscosity of the mold flux.
  • the viscosity of the mold flux increases, the mold flux does not flow smoothly between the inner wall of the mold 30 and the molten steel.
  • the Al 2 O 3 and SiO 2 components in the mold flux have an inverse relationship with each other as the casting proceeds. That is, in the case of Al 2 O 3, the increase is approximately 10 times compared to the beginning of casting at the end of casting, and in the case of SiO 2 , it is reduced to about 1/5 at the end of casting. This causes problems such as cracking in the large duty free having a depth of about 16mm in the cast.
  • FIG. 4 is a view schematically showing a configuration of a casting jig according to an embodiment of the present invention
  • Figures 5 to 7 is a view showing a configuration of a casting jig according to a modification of the present invention.
  • the mold 30 may include two long sides facing each other and two short sides disposed in a direction crossing the long sides and facing each other.
  • the mold 30 may be formed in a hollow rectangular parallelepiped shape in which tops and bottoms are opened by connecting two long sides and two short sides.
  • the immersion nozzle 22 for injecting molten steel stored in the tundish 20 into the mold 30 may be disposed at the center of the mold 30.
  • the casting can be injected into the molten steel (M) in the mold 30, the mold flux (F) is less than the specific gravity of the molten steel (M) disposed on the molten steel (M) It may include a refractory larger than the specific gravity of).
  • the jig may be formed to have a specific gravity of about 3.0 to 6.5 g / cm 3, more preferably about 3.0 to 3.2 g / cm 3.
  • the specific gravity of the molten steel M is about 6.9 to 7.1 g / cm 3
  • the specific gravity of the mold flux F is about 2.7 g / cm 3.
  • the specific gravity of the jig When the specific gravity of the jig is manufactured to have the aforementioned range, the specific gravity of the jig is molten steel ( It may have a specific gravity smaller than M) and larger than the mold flux F. Therefore, during casting, the jig may be disposed between the molten steel M and the mold flux F to reduce the contact area between the molten steel M and the mold flux F.
  • FIG. 1 the specific gravity of the jig is molten steel ( It may have a specific gravity smaller than M) and larger than the mold flux F. Therefore, during casting, the jig may be disposed between the molten steel M and the mold flux F to reduce the contact area between the molten steel M and the mold flux F.
  • the jig may be made of a material having excellent heat resistance and chemical resistance to withstand high temperature molten steel and mold flux.
  • the jig is preferably made of a material that does not react with inclusions or mold flux in the molten steel.
  • the jig may be manufactured to include ZrB 2 .
  • the jig may include a body at least partially deposited on molten steel and a gripping portion provided on the upper surface of the body to remove and mount the jig.
  • the body may serve to float on top of the molten steel and substantially reduce the contact area between the molten steel and the mold flux.
  • the jig may be introduced into the mold during casting such that at least some contact with molten steel and at least some contact with mold flux.
  • the jig contacting the molten steel means that the bottom and side portions of the jig are deposited on the molten steel and disposed at the interface between the molten steel and the mold flux, and the contact with the mold flux means that at least a part of the side surface of the jig is disposed in the mold flux or A portion of the side may mean disposed in the mold flux and part of the side and the top surface may be exposed out of the mold flux.
  • the jig is disposed on the interface between the molten steel and the mold flux to reduce the contact area between the molten steel and the mold flux in a floating state, thereby suppressing the phenomenon in which the inclusions in the molten steel are picked up into the mold flux.
  • the jig is preferably arranged in contact with the inner wall of the mold. That is, the jig can maintain the state in which at least a part of its edge is spaced apart from the inner wall of the mold in the mold to smoothly flow the mold flux between the jig and the mold inner wall, and can also suppress the deformation of the mold flux.
  • the jig body may be formed in various shapes and may be formed to have an area smaller than the surface area of the molten steel in the mold.
  • the jig 100 includes a body 101 formed in a plate shape having an area smaller than that of the molten steel in the mold 30, for example, a rectangular plate shape, and a body. It is connected to the upper surface may include a holding portion 102 for mounting and taking out the body 101.
  • a part of the body 101 is immersed in the molten steel M, and a part of the body 101 is formed to have a thickness such that it can be disposed in the mold flux F, for example, a thickness of about 20 to 50 mm. Can be.
  • the body 101 may be disposed to be deposited in the mold flux F according to the thickness, and a part of the body 101 may be disposed in the mold flux F and some may be exposed outside the mold flux F.
  • the jig 100 may be introduced into the mold 30, and may be introduced into one side and the other side of the immersion nozzle 22, respectively.
  • the jig 100 may be disposed to be spaced apart from the inner wall of the mold 30 by a predetermined distance except for the edge portion in the direction adjacent to the immersion nozzle 22.
  • the jig 100 may be formed to have a smaller area than the surface area of the molten steel M formed on one side or the other side of the mold 30, for example, about the immersion nozzle 22. At this time, the jig 100 may be formed such that the edge of the jig 100, the inner wall of the mold 30, the edge of the jig 100 and the outer circumferential surface of the immersion nozzle 22 are spaced about 20 to 40 mm, respectively. Such jig 100 may be equally applied to the example described below.
  • the jig 100 during casting maintains a floating state on the molten steel (M), it can move in the vertical direction and horizontal direction by the flow of the molten steel (M).
  • the edge of the jig 100 may be in contact with or in close contact with the inner wall of the mold 30.
  • the mold flux F does not flow between the jig 100 and the inner wall of the mold 30, thereby partially deteriorating the lubrication or heat transfer function. Can be.
  • the protrusion 203 may be formed at the edge of the jig 200, that is, at the edge of the body 201 to protrude to the outside or the mold 30.
  • the protrusion 203 may be formed in at least one or more in the circumferential direction of the body 201.
  • the protrusion 203 minimizes the contact area between the body 201 and the inner wall of the mold 30, and between the protrusion 203 and the protrusion 203 when the edge of the body 201 is in contact with or in close contact with the inner wall of the mold 30.
  • the mold flux F may be accommodated in the space so that the mold flux F may smoothly flow between the body 201 and the inner wall of the mold 30.
  • the protrusion 203 may be formed to have a curved surface or an attachment, and preferably, the protrusion 203 may be formed in a shape capable of reducing the contact area between the protrusion 203 and the inner wall of the mold 30.
  • the distance between the protrusion 203 and the inner wall of the mold 30 is the distance between the body 101 of FIG. 4, in which the protrusion 203 is not formed, and the inner wall of the mold 30. May have a similar distance.
  • the protrusion 203 may be equally applied to other embodiments described later.
  • the jig 300 may include a box-shaped body 301 having an open lower portion, and a gripping portion 302 provided on an upper surface of the body 301.
  • the body 301 may include a plate-shaped horizontal portion 301a and a vertical portion 301b extending downward along the edge of the horizontal portion 301a.
  • a space may be formed inside the body 301.
  • at least a portion of the vertical portion 301b may be deposited in the molten steel M, and at least a portion of the vertical portion 301b may be disposed in the mold flux F.
  • the horizontal portion 301a may be disposed to be deposited in the mold flux F or may be disposed above the mold flux F according to the length of the vertical portion 301b.
  • the jig 300 When the jig 300 is introduced into the mold 30, at least a portion of the vertical portion 301b of the body 301 is deposited on the molten steel M, so that the vertical portion 301b is formed inside the body 301 and the body 301. The outside of can be separated. Accordingly, even though the molten steel M and the mold flux F react in the inner space of the body 301, the mold flux F may be deformed, thereby affecting the mold flux F introduced between the inner wall of the mold 30 and the molten steel M.
  • the reaction area of the mold flux F and the molten steel M decreases, thereby delaying the modification of the mold flux F, thereby reducing the slag bear generated on the inner wall of the mold 30, and thus the mold flux F
  • the viscosity change of the mold flux may be smoothly introduced between the mold 30 and the inner wall of the molten steel M.
  • the jig 400 may include a body 401 formed in a frame shape having an open center, and a grip 402 provided on an upper surface of the body 401.
  • the body 401 may function almost similar to the vertical portion 301b of the body 301 shown in FIG. 6. That is, at least a portion of the frame-shaped body 401 is deposited in the molten steel M, and a portion thereof is disposed in the mold flux F to separate the inside and the outside of the body 401. Therefore, even if the mold flux F is denatured due to the reaction between the molten steel M and the mold flux F inside the body 401, the mold flux F outside the body 401 is not affected.
  • the degeneration of the mold flux F located outside the body 401 may be delayed to reduce the slag bear generated on the inner wall of the mold 30, and the viscosity change of the mold flux F may also be delayed, thereby causing the mold 30 to be delayed.
  • the mold flux F may flow smoothly between the inner wall and the molten steel M.
  • the same kind of mold flux may be injected into the body 401, for example, the first region A, and the outside of the body 401, for example, the second region B, and different types of mold fluxes may be injected. It can also be injected.
  • both the first region A and the second bath B may inject a liquid molten mold flux
  • the first region A may inject a solid mold flux
  • the second region B may melt a liquid phase.
  • Mold flux can be injected. In the latter case, at least a part of the body 401, for example, the upper part, is exposed to the upper part of the mold flux, so that the first area A and the second area B are completely separated.
  • FIG. 8 is a flowchart sequentially showing a casting method according to an embodiment of the present invention. Here, an example of performing casting by using the jig illustrated in FIG. 4 will be described.
  • Casting method the process of injecting molten steel into the mold 30 (S110), the process of supplying the mold flux on the molten steel (S120), and the jig 100 formed of refractory on the molten steel
  • At least a portion of the jig 100 may be deposited in molten steel by placing the molten metal, and at least a portion of the jig 100 may be disposed between mold fluxes, and solidification may be performed to solidify the molten steel and cast the cast steel (S140).
  • the area of the molten steel in contact with the mold flux using the jig 100 in the process of casting the cast can be made smaller than the surface area of the molten steel in the mold. This reduces the reaction area between the mold flux and the molten steel during casting to suppress or delay denaturation of the mold flux.
  • the molten steel may be a high aluminum high manganese steel containing 3% by weight or more of aluminum.
  • the mold flux may be a molten mold flux melted using a plasma torch or the like.
  • the jig 100 is introduced into the mold 30. Since the jig 100 is smaller than the specific gravity of the molten steel as described above, and has a specific gravity equal to or larger than the specific gravity of the mold flux, some of the jig 100 may be deposited in the molten steel and some may be disposed in and on the mold flux. At this time, the jig 100 may be input to both sides of the immersion nozzle 22 for injecting molten steel into the mold 30 by using the grip portion 102, the edge of the jig 100 is the mold 30 It may be arranged to be spaced apart from the inner wall by a predetermined distance, for example, about 20 to 40 mm.
  • a space is formed between the jig 100 and the inner wall of the mold 30, in which the mold flux may be disposed on the molten steel.
  • the mold flux injected into the upper part of the molten steel is pushed out to the outside of the jig 100 or the upper part of the jig 100 so that the molten steel and the mold flux are separated. Contact can be suppressed. Therefore, by inserting the jig 100 into the mold 30 it is possible to reduce the contact area between the molten steel and the mold flux.
  • the main surface may be cast by starting casting.
  • the molten steel level of the molten steel may be measured using the position of the jig 100, that is, the position of the upper surface or the grip portion 102 of the jig 100, the body 100. That is, since the jig 100 maintains the floating state in the mold 30, when the jig 100 is known, for example, the height of the jig 100 may be measured, the molten steel level may be measured.
  • the jig 100 remains spaced apart from the inner wall of the mold 30 while floating between the molten steel and the molten steel and the mold flux, and maintains the contact area between the molten steel and the mold flux during the casting process.
  • the reduced state is maintained.
  • the edge of the jig 100 may contact or adhere to the inner wall of the mold 30.
  • the inflow of the mold flux may be restricted toward the inner wall of the mold 30 in which the jig 100 is in contact or in close contact.
  • using the jig 200 formed with the projection 203 as shown in Figure 5 can minimize the contact area between the jig 200 and the mold 30, the space formed between the projection 203 Through the mold flux may be introduced.
  • mold flux may be continuously injected into the molten steel while casting is performed.
  • the inside of the jig 400 such as the first region (A)
  • the outside of the jig 400 such as the second region It can be divided into (B).
  • the same mold flux may be injected into the first region A and the second region B, and different mold fluxes may be injected, respectively.
  • the molten mold flux may be injected into the first region A and the second region B, the first region A may inject solid mold flux, and the second region B may inject molten mold flux. It may be.
  • Figure 10 is a graph showing a comparison of the temperature change of the mold during casting in a test player.
  • the test cycle used in the experiment can cast a cast of 100 to 140mm in thickness, 1000mm in width, casting a cast of about 10m for about 10 minutes by using this test lead cycle.
  • the temperature change of the mold during casting together with the component analysis of the mold flux is measured and shown in FIG. 10.
  • FIG. 10A is a graph showing a temperature change of a mold in a comparative example in which casting is performed without using a jig
  • FIG. 10B is a graph showing a temperature change of a mold in an embodiment in which casting is used using a jig. .
  • thermocouple temperature hunting is intensified, and the thermocouple temperature drop is also confirmed. This is due to the reaction of the mold flux with the molten steel, the Al component of the molten steel flows into the mold flux, and the mold flux is modified.
  • the mold flux is modified as described above, a slag bear is formed on the inner wall of the mold and the viscosity of the mold flux is increased so that the mold flux does not flow smoothly between the mold and the molten steel, thereby degrading lubrication and heat transfer functions, thereby making the thermocouple temperature behavior unstable.
  • thermocouple temperature behavior is stable during the casting process, and that a sudden temperature drop does not occur. This is because the contact area between the mold flux and the molten steel is reduced and the denaturation of the mold flux is suppressed.
  • the deformation of the mold flux can be suppressed by reducing the pickup of the Al component in the molten steel into the mold flux. Therefore, it is possible to produce a high quality cast by suppressing the reduction of the lubrication function and the heat transfer function due to the deformation of the mold flux.
  • the present invention it is possible to improve the quality and productivity of the slab by suppressing the formation of the slag bear on the mold inner wall by suppressing the deformation of the mold flux during casting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

La présente invention concerne un gabarit de coulée et un procédé de coulée l'utilisant, le procédé de coulée comprenant les étapes consistant : à injecter de l'acier fondu dans un moule ; à fournir du flux de moule à la partie supérieure de l'acier fondu ; à insérer un gabarit comprenant un matériau réfractaire dans la partie supérieure de l'acier fondu, une section au moins du gabarit étant en contact avec l'acier fondu et une section au moins étant en contact avec le flux de moule ; et à couler une brame par coagulation de l'acier fondu. Lors de l'étape de coulée de la brame, l'emploi du gabarit permet de faire en sorte que la surface de l'acier fondu entrant en contact avec le flux du moule soit plus petite que la surface de la surface de l'acier fondu dans le moule, ce qui permet d'éviter la dégradation du flux du moule et d'améliorer la qualité et la productivité des brames.
PCT/KR2016/014020 2016-07-08 2016-12-01 Gabarit de coulée et procédé de coulée l'utilisant WO2018008814A1 (fr)

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Application Number Priority Date Filing Date Title
DE112016007049.7T DE112016007049T5 (de) 2016-07-08 2016-12-01 GIEßLEHRE UND GIEßVERFAHREN UNTER VERWENDUNG DERSELBEN
CN201680088394.8A CN109562443A (zh) 2016-07-08 2016-12-01 铸造用浮具和使用其的铸造方法

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KR10-2016-0086981 2016-07-08

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CN112296286B (zh) * 2020-11-03 2022-06-07 万恩同 钢水连续铸造隔离板结构

Citations (5)

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JP2014083575A (ja) * 2012-10-25 2014-05-12 Kobe Steel Ltd 連続鋳造鋳型内へのモールドフラックスの添加方法
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