JP5107427B2 - Casting equipment - Google Patents

Description

  The present invention relates to a casting apparatus for casting liquid steel according to the superordinate concept of claim 1 on a horizontal transport belt and a method for operating the casting apparatus according to the superordinate concept of claim 8.

  In the prior art, a casting apparatus is known in which liquid steel flows from a casting ladle to a distributor and then onto a horizontal transport belt, where the liquid metal is solidified into a preliminary strip and simultaneously transported and cooled. Yes.

  Appropriate devices are known in the prior art, for example from DE 198 52 275 (Patent Document 1) or WO 97/06906 (Patent Document 2).

  Such horizontal casting equipment is a significant modification of the equipment that can change the casting width of the horizontal transport belt and thereby the preliminary strip when the equipment is fixed to its width and the modification is mainly economically effective. Has the disadvantage of requiring Because of this, typically a very extensive disassembly and assembly process is required, and expensive structural members are required, so such changes in equipment are made slightly less in width. Consistently, different horizontal casting equipment is also constructed that can be observed and loaded for different casting widths.

  This has the disadvantage that the replacement of equipment is relatively expensive and results in a significant loss of preparation time, or the configuration of the second, third or multiple equipment is a significant cost increase factor.

  Overall, this solution has so far been associated with significant costs and significant time disadvantages, which have led to inflexible operation or sorting out losses of such casting equipment.

German Patent No. 19852275 International Application Publication No. 97/06906 Specification

  The object of the present invention is to provide a casting apparatus and method for casting liquid steel on a horizontal transport belt that can be realized quickly and without great expense in order to dimension the preliminary strip to be cast in different requirements. It is to create.

  According to the present invention, the problem with the apparatus is that liquid metal, in particular liquid steel, can flow from the casting ladle to the distribution apparatus and can be applied from there onto the horizontal transport belt, and the lateral boundary of the horizontal transport belt reduces the width of the horizontal transport belt This is achieved by a casting apparatus comprising a cast ladle that can be adjusted in consideration, a distributor and a horizontally movable transport belt with side boundaries. Thereby, it can be achieved that the preliminary strip, which is preferably important for the casting process, can be implemented with variable width. The adjustment is preferably performed by an adjustment member suitable for mechanical or hydraulic. Preferably the adjustment is reversible.

  Furthermore, it is preferred if the distribution device can be adjusted in consideration of the width in the width direction of the transport belt. Thereby preferably the liquid metal application and dispensing actions can be controlled on the transport belt.

  At least one cooling device is further disposed at the lower part of the horizontal transportation belt and / or the upper part of the horizontal transportation belt, and the temperature is adjusted so as to cool a metal such as a preliminary strip traveling at a casting speed on the transportation belt. If used for, it is suitable for the purpose.

  It is particularly preferred if at least one cooling device can be variably started taking into account the width in the direction towards the width of the transport belt.

  It is particularly preferred if at least one cooling device can be distributed to the cooling area taking into account the width in the direction towards the width of the transport belt. In this case, if the cooling device has a large number of cooling zones, it is preferred, then there are at least two edge zones, which can be switched on or off depending on the width to be cooled. In such cases, if the cooling zone is not required based on the adjusted casting width, the cooling zone can be shut off.

  According to the invention, the problem with the method comprises a casting device, in particular a dispensing device and a side boundary, in which the width of the cast product is determined and adjusted by a lateral boundary that is adjustable in width and at an angle of 90 ° to the casting direction. This is achieved by a method of operating a casting apparatus comprising a horizontally movable transport belt.

  In this case, it is particularly preferred if the dispensing device is arranged between the side boundaries.

  In another embodiment, if the dispensing device is arranged in front of the side boundary in consideration of the casting direction, the liquid metal is flowed against the side boundary on the head side and limited to the casting width by the side boundary. Is preferable.

  Preferred reproductions are described in the dependent claims.

A schematic representation of the casting apparatus is shown in cross section. Fig. 2 shows a schematic representation of a cooling device in a fitted or adjusted width in plan view. Fig. 2 shows a schematic representation of a cooling device in a fitted or adjusted width in plan view. Fig. 2 shows a schematic representation of a cooling device in a fitted or adjusted width in plan view. Fig. 2 shows a schematic representation of a cooling device in a fitted or adjusted width in plan view. Fig. 2 shows a schematic representation of a cooling device in a fitted or adjusted width in plan view. Fig. 2 shows a schematic representation of a cooling device in a fitted or adjusted width in plan view.

  Next, the present invention will be described in detail with reference to the drawings based on embodiments.

  FIG. 1 schematically shows a casting apparatus 1 in a cross-sectional view, in which liquid steel or liquid metal flows from a casting ladle 2 to an intermediate container 3 and travels from there to a horizontal transport belt 5 via a distributor 4. The horizontal transport belt 5 is a driven transport belt that transports the metal, such as the preliminary strip 7 solidified on the transport belt to which the horizontal transport belt 5 has been moved, at a casting speed. For this purpose, for example, a roll 6 is provided, and the driven transport belt 5 is rotated as an endless belt.

  Furthermore, a cooling device 9 is arranged in particular at the lower part of the transport belt 5 and / or at the upper part of the transport belt 5 so that the solidified preliminary strip 7 cooled at the casting speed on the transport belt 5 is controlled and aimed at cooling. Used for. The cooling device 9 is, for example, an injection device that injects a refrigerant. From the injection device, a refrigerant such as water is injected or applied onto the transport belt 5 and / or the preliminary strip 7. By means of the cooling device 9, for example, the heat transfer transport belt 5 can be cooled as such, so that the solidified metal applied on the transport belt 5 is cooled as a preliminary strip 7. Thereby, the heat of the preliminary strip 7 is removed from the preliminary strip by the jetted or sprayed refrigerant such as cooling water.

  An inert gas hood 8 is provided above the transport belt 5 to protect the spare strip from the external atmosphere. In this case, the inert gas hood 8 can be completely placed on both side boundaries to avoid heat loss.

  In this case, the side boundaries 13, 14 are shown schematically.

  2-7 show a schematic representation of a plan view of the casting apparatus 10, with the cooling device 11 being substantially recognized above and / or below the horizontal running transport belt, the distribution device 12 and the two respective side boundaries 13,14. Should. In this case, the transport belt and the side boundary are schematically illustrated.

  It should be recognized in FIG. 2 that the side boundaries 13, 14 are relatively nearly together as compared to the arrangement of FIG. The dispensing device 12 has a width at the outlet that approximately matches the spacing of the side boundaries 13,14. Thus, the apparatus of FIG. 2 implies a slight strip width arrangement, with the outlet of the apparatus 12 corresponding to approximately the width of the transport belt.

  In contrast, the apparatus of FIG. 3 is adjusted to a greater width in width, so that the width of the preliminary strip to be manufactured, ie the distance between the side boundaries 13, 14, is wider than the width of the liquid metal distributor 12 at the outlet. is there. The width of the distributor 12 at the outlet of the distributor 12 is not changed in FIGS.

  It should be recognized in FIG. 4 that the side boundaries 13, 14 are further relatively together relative to the arrangement of FIG. The dispensing device 12 has a width that is greater than the approximate spacing between the side boundaries 13,14. 4 means an arrangement with a slight strip width. In contrast, the apparatus of FIG. 5 is adjusted to a greater width in width so that the width of the preliminary strip to be manufactured, ie the distance between the side boundaries 13, 14, is approximately the width of the liquid metal distributor 12 at the outlet. They are the same width or narrower than the width. The width of the dispensing device 12 at the outlet of the dispensing device 12 can be implemented selectively in other embodiments.

  As a whole, FIGS. 2 to 5 show a casting apparatus 10 with side boundaries 13, 14 each having an adjustable width. In this case, the distribution device 12 can also be adjusted to the width of the outlet on the transport belt of the casting device to distribute the liquid metal. In this case, the width of the preliminary strip between the side boundaries 13, 14 is the same or wider than the distributor 12 at the outlet. Different mass flows can be applied on the transport belt of the casting apparatus by adjusting the width of the distributor 12, so that the width of the distributor 12 with respect to the mass flow can be adjusted taking into account the strip width of the preliminary strip.

  If the width of the spacing between the side boundaries 13, 14 is larger than the width of the distributor 12 at the outlet, the resulting liquid metal flows in the width direction onto the transport belt, where there is a spare strip given by the width of the side boundaries 13, 14 Distribute to strip width.

  If the width of the gap between the side boundaries 13, 14 is narrower than the width of the distributor 12, the generated liquid metal is observed in the width direction and flows onto the transport belt relative to the side boundaries 13, 14, from which the side boundary Distributes to the full strip width given by the width of 13,14.

  If the width of the spacing between the side boundaries 13, 14 is substantially the same as the width of the distributor 12, the resulting liquid metal flows onto the transport belt substantially parallel to the strip width, where the side boundaries 13, The total strip width given by the width of 14 is distributed.

  In addition to the width adjustability of the side boundaries 13, 14 of the transport belt and / or the distribution device 12, the cooling device 11 can also be variably started by being observed in its width, so that the cooling device 11 has its cooling output or cooling temperature. It can be variably configured in width. In this case, the cooling device 11 can be observed and divided across the strip width of the casting device in different cooling zones, so in this case the edge cooling zone 15 is necessary based on the selected width of the preliminary strip to be cast. If there is, for example, the edge cooling region 15 can be connected to the edge of the cooling device 11 or can be shut off. 6 and 7 show such a configuration in which the cooling device 11 is started with different operating ranges. In FIG. 6, the edge regions 15 are each shut off, and in FIG. 7, the edge region of the dispensing device 12 is activated, i.e. the edge regions are formed to cool the strip of the preliminary strip. The activation or deactivation of the edge cooling zone 15 takes place in particular depending on the adjusted strip width of the preliminary strip, i.e. depending on the distance between the side boundaries 13,14.

  According to the invention, it is particularly preferred if the width of the material to be cast is adjusted reversibly. For this reason, adjustment of the space | interval of the side boundary 13 and 14 can be adjusted reversibly. In this case, in one embodiment, the cooling can be adjusted to the required width by a cooling device with a cooling area. Furthermore, it is preferable if the width of the distribution device 12 is adjusted reversibly. In a particularly preferred embodiment, the width of the spacing between the side boundaries 13, 14 can be reversibly adjusted as the width of the distributor 12 and the width of the cooling parts 11, 15. Particularly preferably, this reversible adjustment is adjusted during this operation, ie online.

1. . . . . Casting equipment . . . . Cast ladle 3. . . . . Intermediate container 4. . . . . 4. Dispensing device . . . . Transport belt 6. . . . . Roll 7. . . . . Spare strip 8. . . . . Inert gas 9. . . . . Cooling device 10. . . . . Casting apparatus 11. . . . . Cooling device 12. . . . . Dispensing device 13. . . . . Side boundary 14. . . . . Side boundary 15. . . . . Cooling area, edge area

Claims (4)

The steel, which is a liquid metal, is distributed from the casting ladle (2) to the casting ladle (2), comprising a horizontally movable transport belt (5) with a distribution device (4) and side boundaries (13, 14). In the casting apparatus (1) which flows to (12) and is supplied from this distributor to the horizontal transport belt (5) , the side boundaries (13, 14) of the horizontal transport belt (5) are the width of the horizontal transport belt (5). The distribution device (12) can adjust the width in the width direction of the transport belt, and at least one cooling device (9) is arranged at the bottom of the horizontal transport belt (5) and cast on the transport belt used crude strip traveling by the speed in order to cool, it is possible to change the width of at least one cooling device (9, 11) is in the width direction of the conveyor belt, at least one cooling device (9, 11) is transported Bell The can split width into a plurality of cooling areas in the width direction, there is one of them at least two edge regions (15), is cooled actuated rely this edge region is a cooling to be the width of the conveyor belt (5) The casting apparatus is characterized in that an inert gas hood (8) for protecting the preliminary strip (7) is provided on the upper part of the transport belt (5) after cooling is disabled . 2. Method for operating a casting apparatus (1) according to claim 1, comprising a horizontally movable transport belt (5) comprising a distribution device (4) and side boundaries (13, 14), wherein the width of the cast product is relative to the casting direction. The method is characterized in that it is determined and adjusted by side boundaries (13, 14) adjustable to an angle of 90 °.   3. Method according to claim 2, characterized in that the dispensing device (12) is arranged between the side boundaries (13, 14).   The dispensing device (12) is arranged in front of the side boundary (13, 14) in the casting direction, so that the liquid metal flows against the side boundary (13, 14) on the head side and the side boundary (13, 14). 4. The method according to claim 3, characterized in that it is limited by the casting width.

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