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EP2985095A1 - Appareil de coulée continue à étirage par le haut et procédé de coulée continue à étirage vers le haut - Google Patents

Appareil de coulée continue à étirage par le haut et procédé de coulée continue à étirage vers le haut Download PDF

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Publication number
EP2985095A1
EP2985095A1 EP13881719.2A EP13881719A EP2985095A1 EP 2985095 A1 EP2985095 A1 EP 2985095A1 EP 13881719 A EP13881719 A EP 13881719A EP 2985095 A1 EP2985095 A1 EP 2985095A1
Authority
EP
European Patent Office
Prior art keywords
cast
metal
shape defining
defining member
pulling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13881719.2A
Other languages
German (de)
English (en)
Other versions
EP2985095A4 (fr
Inventor
Naoaki Sugiura
Yusei Kusaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP2985095A1 publication Critical patent/EP2985095A1/fr
Publication of EP2985095A4 publication Critical patent/EP2985095A4/fr
Withdrawn legal-status Critical Current

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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
    • B22D11/12—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
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces
    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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
    • B22D11/08—Accessories for starting the casting procedure
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/141—Plants for continuous casting for vertical casting
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/145—Plants for continuous casting for upward casting

Definitions

  • the present invention relates to a pulling-up-type continuous casting apparatus and a pulling-up-type continuous casting method.
  • Patent Literature 1 proposes a pulling-up-type free casting method. As shown in Patent Literature 1, after a starter is submerged under the surface of a melted metal (molten metal) (i.e., molten-metal surface), the starter is pulled up, so that some of the molten metal follows the starter and is drawn up by the starter by the surface film of the molten metal and/or the surface tension. Note that it is possible to continuously cast a cast-metal article having a desired cross-sectional shape by drawing the molten metal and cooling the drawn molten metal through a shape defining member disposed in the vicinity of the molten-metal surface.
  • molten metal i.e., molten-metal surface
  • the shape of the cast-metal article in the longitudinal direction as well as the shape thereof in cross section is defined by the mold.
  • the cast-metal article since the solidified metal (i.e., cast-metal article) needs to pass through the inside of the mold, the cast-metal article has such a shape that it extends in a straight-line shape in the longitudinal direction.
  • Patent Literature 1 discloses a hollow cast-metal article (i.e., a pipe) having a zigzag shape or a helical shape in the longitudinal direction rather than the straight-line shape.
  • Patent Literature 1 Japanese Unexamined Patent Application Publication No. 2012-61518
  • the present inventors have found the following problem.
  • the molten metal drawn up through the shape defining member is cooled by a cooling gas.
  • a cooling gas is blown on the cast metal immediately after it is solidified and the molten metal is thereby indirectly cooled.
  • the casting speed can be increased and the productively can be thereby improved.
  • the present invention has been made in view of the above-described problem, and an object thereof is to provide a pulling-up-type continuous casting apparatus capable of producing cast-metal articles having excellent size accuracy and surface quality, and having excellent productivity.
  • a pulling-up-type continuous casting apparatus includes:
  • the above-described configuration makes it possible to provide a pulling-up-type continuous casting apparatus capable of producing cast-metal articles having excellent size accuracy and surface quality, and having excellent productivity.
  • the second nozzle is preferably fixed on the shape defining member or formed inside the shape defining member. This configuration can reduce the necessary space.
  • the pulling-up-type continuous casting apparatus preferably further includes a projection disposed on the shape defining member, the projection being disposed at an end on a side of the shape defining member where the molten metal passes through, the projection extending in a pulling-up direction.
  • a tip of the second nozzle is preferably formed on a top surface of the projection.
  • An angle between a surface of the cast-metal article and a flux of the gas blown from the second nozzle is preferably equal to or less than 25 degrees. This configuration can effectively block the cooling gas.
  • the gas blown from the second nozzle is preferably the same gas as the cooling gas blown from the first nozzle. This can simplify the equipment.
  • a pulling-up-type continuous casting apparatus includes:
  • the above-described configuration makes it possible to provide a pulling-up-type continuous casting apparatus capable of producing cast-metal articles having excellent size accuracy and surface quality, and having excellent productivity.
  • a pulling-up-type continuous casting method includes:
  • the above-described configuration makes it possible to provide a pulling-up-type continuous casting method capable of producing cast-metal articles having excellent size accuracy and surface quality, and having excellent productivity.
  • the pulling-up-type continuous casting method preferably further includes a step of adjusting a flow rate of the gas according to a flow rate of the cooling gas.
  • the nozzle for blowing the gas toward the cast-metal article in the obliquely upward direction is preferably fixed on the shape defining member or formed inside the shape defining member. This configuration can reduce the necessary space.
  • a projection is preferably provided on the shape defining member, the projection being disposed at an end on a side of the shape defining member where the molten metal passes through, the projection extending in a pulling-up direction. Further, a tip of the nozzle is preferably formed on a top surface of the projection.
  • An angle between a surface of the cast-metal article and a flux of the gas blown toward the cast-metal article in the obliquely upward direction is preferably equal to or less than 25 degrees. This configuration can effectively block the cooling gas.
  • the gas blown toward the cast-metal article in the obliquely upward direction is preferably the same gas as the cooling gas. This can simplify the equipment.
  • a pulling-up-type continuous casting method includes:
  • the above-described configuration makes it possible to provide a pulling-up-type continuous casting method capable of producing cast-metal articles having excellent size accuracy and surface quality, and having excellent productivity.
  • Fig. 1 is a schematic cross section of a free casting apparatus according to the first exemplary embodiment.
  • the free casting apparatus according to the first exemplary embodiment includes a molten-metal holding furnace 101, a shape defining member 102, a gas blowing-up nozzle(s) 104, an actuator(s) 105, a cooling gas nozzle(s) 106, and a pulling-up machine 108.
  • the xy-plane forms a horizontal plane and the z-axis direction is the vertical direction. More specifically, the positive direction on the z-axis is the vertically upward direction.
  • the molten-metal holding furnace 101 contains molten metal M1 such as aluminum or its alloy, and maintains the molten metal M1 at a predetermined temperature.
  • molten metal M1 such as aluminum or its alloy
  • the surface of molten metal M1 i.e., molten-metal surface
  • the molten-metal holding furnace 101 may be replenished with molten metal as required during the casting process so that the molten-metal surface is kept at a fixed level.
  • the position of the solidification interface can be raised by increasing the setting temperature of the holding furnace and the position of the solidification interface can be lowered by lowering the setting temperature of the holding furnace.
  • the molten metal M1 may be a metal or an alloy other than aluminum.
  • the shape defining member 102 is made of ceramic or stainless steel, for example, and disposed near the molten-metal surface. In the example shown in Fig. 1 , the shape defining member 102 is disposed so that a gap G between its principal surface on the underside (molten metal side) and the molten-metal surface is about 0.5 mm. By providing the gap G, it is possible to prevent the shape defining member 102 from lowering the temperature of the molten metal.
  • the shape defining member 102 is in contact with held molten metal M2, which is pulled up from the molten-metal surface, on the periphery of its opening (molten-metal passage section 103) through which molten metal passes. Therefore, the shape defining member 102 can define the cross-sectional shape of cast metal M3 to be cast while preventing oxide films formed on the surface of the molten metal M1 and foreign substances floating on the surface of the molten metal M1 from entering the cast metal M3.
  • the cast metal M3 shown in Fig. 1 is a solid cast-metal article having a plate-like shape in a horizontal cross section (hereinafter referred to as "lateral cross section").
  • the shape defining member 102 may be disposed so that its underside principal surface is entirely in contact with the molten-metal surface.
  • the underside principal surface may be coated with a mold wash having a heat-insulating property so that the decrease in the temperature of the molten metal due to the shape defining member 102 is reduced.
  • the mold wash include a vermiculite mold wash.
  • the vermiculite mold wash is a mold wash that is obtained by suspending refractory fine particles made of silicon oxide (SiO 2 ), iron oxide (Fe 2 O 3 ), aluminum oxide (Al 2 O 3 ), or the like in water.
  • Fig. 2 is a plane view of the shape defining member 102 according to the first exemplary embodiment.
  • the cross section of the shape defining member 102 shown in Fig. 1 corresponds to a cross section taken along the line I-I in Fig. 2 .
  • the shape defining member 102 has, for example, a rectangular shape as viewed from the top, and has a rectangular opening (molten-metal passage section 103) having a thickness t1 and a width w1 at the center thereof.
  • the molten metal passes through the rectangular opening (molten-metal passage section 103).
  • the xyz-coordinate system shown in Fig. 2 corresponds to that shown in Fig. 1 .
  • the molten metal M1 follows the cast metal M3 and is pulled up by the cast metal M3 by its surface film and/or the surface tension. Further, the molten metal M1 passes through the molten-metal passage section 103 of the shape defining member 102. That is, as the molten metal M1 passes through the molten-metal passage section 103 of the shape defining member 102, an external force(s) is applied from the shape defining member 102 to the molten metal M1 and the cross-sectional shape of the cast metal M3 is thereby defined.
  • the molten metal that follows the cast metal M3 and is pulled up from the molten-metal surface by the surface film of the molten metal and/or the surface tension is called "held molten metal M2". Further, the boundary between the cast metal M3 and the held molten metal M2 is the solidification interface SIF.
  • the gas blowing-up nozzle(s) (second nozzle(s)) 104 is disposed and fixed on the shape defining member 102. It should be noted that the gas blowing-up nozzle 104 blows a gas (hereinafter called "blocking gas") toward the cast metal M3 in an obliquely upward direction in order to prevent a cooling gas blown from the cooling gas nozzle 106 onto the cast metal M3 from causing an undulation on the surface of the held molten metal M2. Further, the gas blowing-up nozzle 104 supports the shape defining member 102. Details of the gas blowing-up nozzle 104 are described later. Note that a gas similar to the cooling gas can be used as the blocking gas.
  • a gas similar to the cooling gas can be used as the blocking gas.
  • the blocking gas when the blocking gas is the same gas as the cooling gas, the blocking gas can also be supplied from the cooling gas supply unit (not shown). That is, the equipment can be simplified and hence the use of the same gas is preferred. Note that the gas blowing-up nozzle 104 does not necessarily have to be fixed on the shape defining member 102.
  • the gas blowing-up nozzle 104 is connected to the actuator 105.
  • the gas blowing-up nozzle 104 and the shape defining member 102 can be moved in the up/down direction (vertical direction) and the horizontal direction by the actuator 105.
  • This configuration makes it possible, for example, to move the shape defining member 102 downward as the molten-metal surface is lowered due to the advance of the casting process. Further, since the shape defining member 102 can be moved in the horizontal direction, the shape in the longitudinal direction of the cast metal M3 can be arbitrarily changed.
  • the cooling gas nozzle 106 is cooling means for blowing a cooling gas (such as air, nitrogen, and argon) supplied from the cooling gas supply unit (not shown) on the cast metal M3 and thereby cooling the cast metal M3.
  • a cooling gas such as air, nitrogen, and argon
  • the position of the solidification interface can be lowered by increasing the flow rate of the cooling gas and the position of the solidification interface can be raised by reducing the flow rate of the cooling gas.
  • the cooling gas nozzle (cooling unit) 106 can also be moved in the horizontal direction and the vertical direction in accordance with the movement of the gas blowing-up nozzle 104 and the shape defining member 102.
  • the held molten metal M2 located in the vicinity of the solidification interface SIF is successively solidified, and the cast metal M3 is thereby formed.
  • the position of the solidification interface can be raised by increasing the pulling-up speed of the pulling-up machine 108 and the position of the solidification interface can be lowered by reducing the pulling-up speed.
  • Fig. 3 is a side view showing a positional relation between the gas blowing-up nozzle 104 and the cooling gas nozzle 106 provided in the free casting apparatus according to the first exemplary embodiment.
  • the flux of the cooling gas for cooling the cast metal M3 is blown from the cooling gas nozzle 106 in a direction roughly perpendicularly to the surface of the cast metal M3. This is because the closer the blowing direction is to the direction perpendicular to the surface, the more the cooling efficiency improves. Further, the closer the tip of the cooling gas nozzle 106 is to the cast metal M3, the more the casting speed can be increased. The larger the flow rate of the cooling gas, the more the casting speed can be increased. Further, the closer the place on which the cooling gas is blown is to the solidification interface, the more the casting speed can be increased.
  • the cooling gas that has collided onto the surface of the cast metal M3 branches off into an upward direction and a downward direction along the surface of the cast metal M3. Then, if there is nothing that blocks the downward-branched cooling gas, the downward-branched cooling gas causes an undulation on the surface of the held molten metal M2. When the flow rate of the cooling gas is increased, this undulation becomes larger, thus deteriorating the size accuracy and the surface quality of the cast-metal article.
  • the gas blowing-up nozzle 104 blows a blocking gas in an obliquely upward direction from a place located on the shape defining member 102 as shown in Fig. 3 .
  • the place on the surface of the cast metal M3 on which the blocking gas is blown is located between the place on the surface of the cast metal M3 on which the cooling gas is blown and the solidification interface SIF.
  • the blocking gas it is possible to block the cooling gas that has branched in the downward direction along the surface of the cast metal M3.
  • the blocking gas can improve the cooling effect of the cast metal M3. Note that the flow rate of the blocking gas is preferably adjusted according to the flow rate of the cooling gas.
  • Fig. 4 is a schematic diagram for explaining the effect of the angle ⁇ between the flux of the blocking gas and the surface of the cast metal M3.
  • Q0 the total flow rate of the blocking gas blown from the gas blowing-up nozzle 104
  • Q1 the flow rate of the blocking gas that has branched downward
  • Q2 the flow rate of the blocking gas that has branched upward
  • Fig. 5 is a graph for explaining the effect of the angle ⁇ between the flux of the blocking gas and the surface of the cast metal M3.
  • the ratio (%) of the flow rate Q1 of the downward-branched blocking gas to the total flow rate Q0 changes. This ratio (%) can be calculated by an expression "1/2 ⁇ (1-cos0) ⁇ 100".
  • Fig. 5 shows a plot in accordance with this expression.
  • the horizontal axis in Fig. 5 indicates angles ⁇ (degrees) and the vertical axis indicates ratios Q1 ⁇ Q0 (%) of the flow rate Q1 of the downward-branched blocking gas to the total flow rate Q0.
  • the blocking gas itself causes an undulation on the surface of the held molten metal M2.
  • the ratio Q1 ⁇ Q0 (%) is preferably equal to or less than 5% and hence the angle ⁇ is preferably equal to or less than 25 degrees.
  • a starter ST is lowered and made to pass through the molten-metal passage section 103 of the shape defining member 102, and the tip of the starter ST is submerged into the molten metal M1.
  • the starter ST starts to be pulled up at a predetermined speed.
  • the molten metal M1 follows the starter ST and is pulled up from the molten-metal surface by the surface film and/or the surface tension. That is, the held molten metal M2 is formed.
  • the held molten metal M2 is formed in the molten-metal passage section 103 of the shape defining member 102. That is, the held molten metal M2 is shaped into a given shape by the shape defining member 102.
  • the starter ST is cooled by the cooling gas blown from the cooling gas nozzle 106, the held molten metal M2 successively solidifies from its upper side toward its lower side. As a result, the cast metal M3 grows. In this manner, it is possible to continuously cast the cast metal M3.
  • the free casting apparatus is equipped with the gas blowing-up nozzle 104 that blows a blocking gas in an obliquely upward direction from a place located on the shape defining member 102.
  • a blocking gas By using this blocking gas, it is possible to block the cooling gas that has branched in the downward direction along the surface of the cast metal M3. As a result, it is possible to prevent (or reduce) the occurrence of an undulation on the surface of the held molten metal M2 and improve the size accuracy and the surface quality of the cast-metal article.
  • Fig. 6 is a plan view of a shape defining member 102 according to the modified example of the first exemplary embodiment.
  • Fig. 7 is a side view of the shape defining member 102 according to the modified example of the first exemplary embodiment. Note that the xyz-coordinate systems shown in Figs. 6 and 7 correspond to that shown in Fig. 1 .
  • the shape defining member 102 according to the first exemplary embodiment shown in Fig. 2 is composed of one plate. Therefore, the thickness t1 and the width w1 of the molten-metal passage section 103 are fixed.
  • the shape defining member 102 according to the modified example of the first exemplary embodiment includes four rectangular shape defining plates 102a, 102b, 102c and 102d as shown in Fig. 6 . That is, the shape defining member 102 according to the modified example of the first exemplary embodiment is divided into a plurality of sections. With this configuration, it is possible to change the thickness t1 and the width w1 of the molten-metal passage section 103. Further, the four rectangular shape defining plates 102a, 102b, 102c and 102d can be moved in unison in the z-axis direction.
  • the shape defining plates 102a and 102b are arranged to be opposed to each other in the x-axis direction. Further, as shown in Fig. 7 , the shape defining plates 102a and 102b are disposed at the same height in the z-axis direction. The gap between the shape defining plates 102a and 102b defines the width w1 of the molten-metal passage section 103. Further, since each of the shape defining plates 102a and 102b can be independently moved in the x-axis direction, the width w1 can be changed. Note that, as shown in Figs. 6 and 7 , a laser displacement gauge S1 and a laser reflector plate S2 may be provided on the shape defining plates 102a and 102b, respectively, in order to measure the width w1 of the molten-metal passage section 103.
  • the shape defining plates 102c and 102d are arranged to be opposed to each other in the y-axis direction. Further, the shape defining plates 102c and 102c are disposed at the same height in the z-axis direction. The gap between the shape defining plates 102c and 102d defines the thickness t1 of the molten-metal passage section 103. Further, since each of the shape defining plates 102c and 102d can be independently moved in the y-axis direction, the thickness t1 can be changed.
  • the shape defining plates 102a and 102b are disposed in such a manner that they are in contact with the top sides of the shape defining plates 102c and 102d.
  • the driving mechanism for the shape defining plate 102a includes slide tables T1 and T2, linear guides G11, G12, G21 and G22, actuators A1 and A2, and rods R1 and R2.
  • the shape defining plates 102b, 102c and 102d also includes its driving mechanism as in the case of the shape defining plate 102a, the illustration of them is omitted in Figs. 6 and 7 .
  • the shape defining plate 102a is placed and fixed on the slide table T1, which can be slid in the x-axis direction.
  • the slide table T1 is slidably placed on a pair of linear guides G11 and G12 extending in parallel with the x-axis direction. Further, the slide table T1 is connected to the rod R1 extending from the actuator A1 in the x-axis direction.
  • the shape defining plate 102a can be slid in the x-axis direction.
  • the linear guides G11 and G12 and the actuator A1 are placed and fixed on the slide table T2, which can be slid in the z-axis direction.
  • the slide table T2 is slidably placed on a pair of linear guides G21 and G22 extending in parallel with the z-axis direction. Further, the slide table T2 is connected to the rod R2 extending from the actuator A2 in the z-axis direction.
  • the linear guides G21 and G22 and the actuator A2 are fixed on a horizontal floor surface or a horizontal pedestal (not shown). With the above-described configuration, the shape defining plate 102a can be slid in the z-axis direction.
  • the actuators A1 and A2 include a hydraulic cylinder, an air cylinder, and a motor.
  • Fig. 8 is a schematic cross section of a free casting apparatus according to the second exemplary embodiment. Note that the xyz-coordinate system shown in Fig. 8 also corresponds to that shown in Fig. 1 .
  • the gas blowing-up nozzle 104 is formed on the shape defining member 102.
  • a gas blowing-up nozzle(s) 204 is formed inside a shape defining member 202.
  • a passage(s) for a blocking gas is formed inside the shape defining member 202.
  • the free casting apparatus according to the second exemplary embodiment by forming the passage(s) for the blocking gas inside the shape defining member 202, the space necessary for the free casting apparatus is reduced in the second exemplary embodiment even further than it is in the first exemplary embodiment.
  • the gas blowing-up nozzle 204 that blows a blocking gas in an obliquely upward direction is disposed inside the shape defining member 202.
  • the place on the surface of the cast metal M3 on which the blocking gas is blown is located between the place on the surface of the cast metal M3 on which the cooling gas is blown and the solidification interface SIF.
  • the angle ⁇ is preferably equal to or less than 25 degrees.
  • the cooling gas that has branched in the downward direction along the surface of the cast metal M3 can be blocked by the blocking gas blown up in an obliquely upward direction from the gas blowing-up nozzle 204 formed inside the shape defining member 202.
  • the blocking gas can improve the cooling effect of the cast metal M3.
  • Fig. 9 is a schematic cross section of a free casting apparatus according to the third exemplary embodiment. Note that the xyz-coordinate system shown in Fig. 9 also corresponds to that shown in Fig. 1 .
  • the gas blowing-up nozzle 104 is formed on the shape defining member 102.
  • a blocking wall(s) (projection(s)) 302a for blocking the cooling gas that has branched in the downward direction along the surface of the cast metal M3 is formed.
  • the blocking wall 302a is formed on a shape defining member near the end on the side of the shape defining member 302 where the molten-metal passage section 103 passes through.
  • the height of the blocking wall 302a and distance between the molten-metal passage section 103 and the blocking wall 302a are determined according to the shape in the longitudinal direction of the cast metal M3. Specifically, the higher the blocking wall 302a is, the more the effect of blocking the downward-branched cooling gas improves. Further, the shorter the distance between the molten-metal passage section 103 and the blocking wall 302a is, the more the effect of blocking the downward-branched cooling gas improves. However, the flexibility in the shape in the longitudinal direction of the cast metal M3 decreases, thus leading to the cast metal M3 extending on a straight line.
  • Fig. 10 is a schematic cross section of a free casting apparatus according to a modified example of the third exemplary embodiment.
  • the blocking wall 302a may reach the outer edge (the end on the outer side) of the shape defining member 302.
  • the cooling gas that has branched in the downward direction along the surface of the cast metal M3 can be blocked by the blocking wall 302a.
  • the cooling gas that has branched in the downward direction along the surface of the cast metal M3 can be blocked by the blocking wall 302a.
  • Fig. 11 is a schematic cross section of a free casting apparatus according to the fourth exemplary embodiment. Note that the xyz-coordinate system shown in Fig. 11 also corresponds to that shown in Fig. 1 .
  • the gas blowing-up nozzle 204 is formed inside the shape defining member 202.
  • the blocking wall 302a is formed on the shape defining member 302.
  • a gas blowing-up nozzle(s) 404 is formed inside a shape defining member 402 and a blocking wall(s) 402a.
  • a passage(s) for a blocking gas is formed inside the shape defining member 402 and the blocking wall(s) 402a.
  • tip(s) (blowing hole(s)) of the gas blowing-up nozzle(s) 404 is formed on the top surface of the blocking wall(s) 402a.
  • the gas blowing-up nozzle 404 that blows up a blocking gas in an obliquely upward direction is disposed inside the shape defining member 402 and the blocking wall 402a.
  • the place on the surface of the cast metal M3 on which the blocking gas is blown is located between the place on the surface of the cast metal M3 on which the cooling gas is blown and the solidification interface SIF.
  • the angle ⁇ is preferably equal to or less than 25 degrees.
  • the cooling gas that has branched in the downward direction along the surface of the cast metal M3 can be blocked by both the blocking wall 402a and the blocking gas blown up in an obliquely upward direction from the inside of that blocking wall 402a.
  • the blocking gas can improve the cooling effect of the cast metal M3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Devices For Molds (AREA)
EP13881719.2A 2013-04-10 2013-04-10 Appareil de coulée continue à étirage par le haut et procédé de coulée continue à étirage vers le haut Withdrawn EP2985095A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/002453 WO2014167598A1 (fr) 2013-04-10 2013-04-10 Appareil de coulée continue à étirage par le haut et procédé de coulée continue à étirage vers le haut

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Publication Number Publication Date
EP2985095A1 true EP2985095A1 (fr) 2016-02-17
EP2985095A4 EP2985095A4 (fr) 2016-04-27

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US (1) US20160052051A1 (fr)
EP (1) EP2985095A4 (fr)
JP (1) JPWO2014167598A1 (fr)
CN (1) CN105102152A (fr)
AU (1) AU2013386130A1 (fr)
BR (1) BR112015025525A2 (fr)
CA (1) CA2908090A1 (fr)
RU (1) RU2015147723A (fr)
WO (1) WO2014167598A1 (fr)

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JP6477667B2 (ja) * 2016-11-08 2019-03-06 トヨタ自動車株式会社 成形体製造方法、及び、成形体製造装置
CN109604550B (zh) * 2018-12-27 2020-02-21 河南理工大学 一种镁合金垂直半连续铸造装置

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US20160052051A1 (en) 2016-02-25
BR112015025525A2 (pt) 2017-07-18
AU2013386130A1 (en) 2015-10-15
EP2985095A4 (fr) 2016-04-27
RU2015147723A (ru) 2017-05-16
CA2908090A1 (fr) 2014-10-16
WO2014167598A1 (fr) 2014-10-16
CN105102152A (zh) 2015-11-25

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