• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a continuous casting mold (1) for the continuous casting of a billet with billet or billet profile. The object of the invention is to provide a continuous casting mold (1) which allows a higher cooling capacity and in which the mold (1) has a high rigidity. This object is achieved by a continuous casting mold, comprising - an inner tube (2) which forms a mold cavity (4) open on both sides along a longitudinal axis (3); a plurality of cooling slots (5) in the outer surface of the inner tube (2), which extend over a longitudinal region (6) of the inner ear (2) parallel to the longitudinal axis (3); - A collar (7) which surrounds the length region (6) of the inner tube (2) transversely to the longitudinal axis (3), so that a cooling fluid in a cooling slot (5) between the inner tube (2) and the sleeve (7) can flow; and an outer tube (8), which surrounds the inner tube (2) and the sleeve (7) and fluid-tight seals, so that between the inner tube (2) and the outer tube (8) can form a cooling jacket.
    公开号:AT512433A1
    申请号:T50014/2012
    申请日:2012-01-30
    公开日:2013-08-15
    发明作者:Franz Dr Ramstorfer；Ewald Dr Reisenberger；Heinrich Dipl Ing Thoene；Franz Dipl Ing Wimmer；Ugo Dr Zanelli
    申请人:Siemens Vai Metals Tech Gmbh；
    IPC主号:
    专利说明:

    1 324
    description
    Continuous casting mold for continuous casting of a billet with billet or billet profile 5
    Field of engineering
    The present invention relates to a continuous casting mold for continuously casting a billet with billet or billet profile, 10 comprising an inner tube which forms a mold cavity open on both sides along a longitudinal axis; a plurality of cooling slots in the outer circumferential surface of the inner tube, which extend over a longitudinal region of the inner ear 15 parallel to the longitudinal axis; and an outer tube, which encloses the inner tube with the cooling slots and fluid-tight seals, so that between the inner tube and the outer tube, a cooling jacket can form. 20 State of the art
    From GB 2 177 331 A a generic continuous casting mold is known. The disadvantage of this is that the rigidity of the inner tube is reduced due to the cooling slots 25 and the cooling fluid, which can flow between the inner tube and the outer tube, the cooling slots flows through insufficiently. As a result, the desired effect of the cooling slots, namely the cooling performance of the mold by bringing the cooling fluid to the molten steel in the mold cavity, is achieved only to an insufficient degree.
    As the cooling capacity can be further increased, the font can not be removed. 35 Summary of the Invention
    The object of the invention is to overcome the disadvantages of the prior art and a continuous mold to
    2 324, which allows a higher cooling capacity and in which the mold has a high rigidity.
    This object is achieved by a continuous casting mold of the type mentioned in the introduction 5, comprising a sleeve which encloses the inner tube with its cooling slots transversely to the longitudinal axis, so that a cooling fluid can flow in a cooling slot between the inner ear and the sleeve; and 10 - an outer tube, which encloses the inner tube with the cooling slots and the sleeve and fluid-tight seals, so that between the inner tube and the outer tube, a cooling jacket can form. By this retrospectively considered simple modification of the mold is on the one hand ensures that a cooling fluid-which advantageously the mold against the casting direction of the strand (ie in countercurrent to the forming strand, concretely usually from bottom to top) is flowed through - not 20 at the Cooling slots flowed past, but by means of
    Cuff is forced to flow through the cooling slots. As a result, the cooling capacity of the mold is significantly increased. On the other hand, the sleeve, which encloses the inner tube in a normal plane to the longitudinal axis, stiffens the inner tube, so that the structural unit, consisting of the slotted inner tube and the sleeve, at least has no significantly lower rigidity. On the one hand results from the high rigidity combined with the high cooling capacity of the mold at the same casting speed, a thicker 30 strand shell, so that at the same casting speed, the reliability of the continuous casting machine is increased. On the other hand, with the same target strand thickness, the casting speed can be increased, so that it is possible to further increase the casting speed in a continuous casting machine. This increases the productivity of
    Continuous casting machine or a casting-rolling compound. 3 324
    In order to allow a simple supply and removal of the cooling fluid, it is advantageous if the continuous casting mold on the lower end side has a connection for introducing the cooling fluid into the cooling jacket and on the upper end side 5 has a connection for carrying out the cooling fluid from the cooling jacket. This embodiment has the advantage over lateral connections that the cooling fluid flows through the mold along the entire longitudinal extent. 10 Because the inner surface of the inner tube is high
    It is advantageous if the inner tube is made of a copper alloy (optionally with a coating of a hard, high-temperature-resistant material, see eg http://en.wikipedia.org/wiki/ Cermet) exists.
    It is expedient to manufacture the sleeve and the outer tube made of steel. Since the inner tube is subject to wear, it is advantageous that the cuff be detachably, e.g. is connected to the inner tube via at least one connecting element such as a screw connection. As a result, the reuse of the sleeve is possible after an exchange of the inner tube. Alternatively, it is of course also possible for the inner tube to be non-detachably connected to the cuff, e.g. by soldering, welding or gluing.
    In order to redirect the flow of cooling fluid safely from the cooling jacket into the cooling slots, it is advantageous that the
    Cuff on the outer circumferential surface has a seal (for example, a so-called O-ring). This prevents leakage of the cooling fluid between the sleeve and the outer tube. 35
    In order to increase the rigidity of the assembly, consisting of inner ear and cuff, it is advantageous in a one-piece running cuff that the inner tube with
    4 324 of the sleeve forms an interference fit at an operating temperature of the continuous casting mold. As a result, the inner tube is pressed against the sleeve, so that the rigidity of the continuous casting mold is increased. 5
    Alternatively, it is also possible to make the cuff split, with one part being designed to be braced with another part of the cuff. The tensioning force, e.g. It is easy to set the preload force or tightening torque of a screw that clamps one part against another part of the collar.
    In a split cuff, it is advantageous to make the cuff split in a plane passing through the longitudinal axis of the inner tube.
    The continuous casting mold according to the invention is equally applicable to straight tube molds, i. when the inner tube 20 and the outer tube have a straight longitudinal axis, as well as for curved tube molds, i. when the inner tube and the outer tube have a bent longitudinal axis.
    With regard to the choice of the dimensions of the cooling slots, it is advantageous if all the cooling slots in a normal plane to the longitudinal axis have a first flow-through surface, when the cooling jacket between the inner tube and the outer tube (ie outside the length range of the inner tube having cooling slots) in a normal plane to the longitudinal axis 30 has a second flow-through surface, wherein the first flow-through surface is between 50 and 200% of the second permeable surface. Alternatively, it would also be possible to choose the hydraulic diameter of the cooling slots substantially equal to the hydraulic diameter of the cooling jacket.
    Since the liquid molten metal in the region of the meniscus has the highest temperature, it is advantageous if in
    5 324
    Operation of the continuous casting machine of the meniscus is arranged in the longitudinal region.
    Brief Description of the Drawings 5
    Further advantages and features of the present invention will become apparent from the following description of non-limiting embodiments, reference being made to the following figures, which show: FIG
    1 shows a perspective view of a continuous casting mold according to the invention
    FIG. 2 is a perspective view of an inner tube 15 with a collar according to FIG. 1
    3 is a perspective view of the outer tube according to FIG. 1; FIG. 4 is an elevational view of FIG
    5 is a plan and a plan view of FIG. 1
    6 is a sectional view along the 25 section line B-B of FIG. 5
    7 is a sectional view taken along section line C-C of FIG. 5. FIG. 8 is a sectional view along section line D-D of FIG. 5
    9 shows a section along the section line E-E of FIG. 7 35, FIG. 10 shows a representation of the flow directions when flowing through a cooling slot
    DESCRIPTION OF EMBODIMENTS 6 324
    1 shows a perspective view of a continuous casting mold 1 according to the invention, which is suitable for the continuous casting of a strand with billet or billet profile made of 5 molten steel. In the following figures, straight molds were always shown, but the invention is by no means limited thereto and can be applied without restriction even with a bent mold. 10 The continuous casting mold 1 has a straight inner tube 2, which has a mold cavity with a billet or billet profile which is open on both sides along the longitudinal axis 3. The cooling slots 5 in the inner tube 2 and the sleeve 7 are covered in Figure 1 by the outer tube 8, so that they are not shown 15. According to FIG. 1, the inner tube 2 is divided into its four quadrants, the dividing planes respectively extending through the longitudinal axis 3.
    FIG. 2 shows the sleeve 7 from FIG. 1 and an undivided variant of the inner tube 2. Regardless of an undivided or divided embodiment, the inner tube 2 has a plurality of cooling slots 5, which extend parallel to the longitudinal axis 3 over a longitudinal region 6 of the inner tube 2. Concretely, the mold cavity 4 of the mold shown in FIG. 5 has a square cross section of 130 × 130 mm. The cooling slots have a width of 10 mm and a depth of 8 mm to the bottom. The distance between two cooling slots 5 is 18 mm. The thickness of the inner tube is not constant over the longitudinal axis 3 and is between 13 and 15 mm; in the region of the cooling slots 5, the inner tube has a thickness of 13 mm, so that the minimum distance between the mold cavity and the cooling slot is about 5 mm. The sleeve 7 shown is constructed in one piece and has at operating temperature he mold 35 between the inner circumferential surface of the sleeve 7 and the outer surface of the inner tube 2 a press fit, so that the weakened by the cooling slots 5 inner tube 2 is supported on the sleeve 7.
    5,7324
    FIG. 3 shows the outer tube 8 of FIG. 1 in a separate representation. As can be seen in the upper area, the outer tube 8 has a smooth inner circumferential surface.
    FIG. 4 shows an elevational view of FIG. 2.
    5 shows an elevation and a plan view of the continuous mold 1. 10
    6 shows a first sectional view of the continuous mold 1 along the section line B-B of FIG. 5. In this case, the inner pipe 2 is formed of four quadrants. Between the inner tube 2 and the outer tube 8 is 15 of the cooling jacket (since most of the cooling fluid water is used, also called water jacket) place. The flow-through surface between the inner tube 2 and the outer tube 8 is approximately 2700 mm 2 here. FIG. 7 shows a section along the section line C-C. It can be seen that, on the one hand, the sleeve 7 encloses the inner tube 2 with the cooling slots 5. On the other hand, the sleeve 7 is enclosed by the outer tube 8, so that these three components 2,7,8 25 support each other. By performing the cooling slots with a semicircular base, excessive notch stresses in the inner tube 2 are avoided. As can be seen in particular from Figures 2 and 4, it is advantageous to provide a continuous transition parallel to the longitudinal axis 3 between the inner tube 2 without cooling slots, the longitudinal region of the inner tube 2 with cooling slots 5, and the inner tube 2 without cooling slots. This measure also contributes to the reduction of notch stresses. The sum of the flow-through surfaces of the cooling slots 5 between the inner tube 2 and the outer tube 8 is approximately 2200 mm 2 here. Also, the hydraulic diameters of the cooling jacket dH-Kühimantei and the cooling slots dH-Kühischiitze are comparable in something, Wherein d] j-Kuhlschlitze = 0.93 * dn-cooling jacket · 8 324
    FIG. 8 shows a section along the section line DD of FIG. 5. FIG. 9 shows a longitudinal section along the section line EE of FIG. 7. A detail of this is shown enlarged in FIG. 10, from which it can be seen how the cooling fluid essentially differs from FIG down to the top, ie opposite to the casting direction which runs vertically from top to bottom, flows through the 10 cooling jacket. In the lower region of the mold, the cooling fluid extends vertically upwards until it is deflected by the sleeve 7 into the cooling slots 5. In the longitudinal region of the inner tube 2, the cooling slots 5, the fluid flows again substantially vertically upward, 15 until it is redirected after completion of the sleeve back into the original cooling jacket between the inner tube 2 and outer tube 8. The flow directions of the fluid are shown by arrows 10 in this figure.
    9,324
    LIST OF REFERENCES 1 continuous casting mold 2 inner tube 3 longitudinal axis 4 mold cavity 5 cooling slot 6 length region 7 sleeve 8 outer tube 9 seal 10 flow direction cooling fluid
    权利要求:
    Claims (14)
    [1]
    10 324 Claims 1. Continuous casting mold (1) for continuously casting a billet with billet or billet profile, comprising: 5 - an inner tube (2) forming a mold cavity (4) open on both sides along a longitudinal axis (3); - A plurality of cooling slots (5) in the outer circumferential surface of the inner tube (2) extending over a longitudinal region (6) of the inner ear (2) parallel to the longitudinal axis (3) extend; 10 - a sleeve (7) which encloses the length region (6) of the inner tube (2) transversely to the longitudinal axis (3), so that a cooling fluid in a cooling slot (5) between the inner ear (2) and the sleeve (7) can flow ; and an outer tube (8), which surrounds the inner tube (2) and the 15 sleeve (7) and fluid-tight seals, so that between the inner tube (2) and the outer tube (8) can form a cooling jacket.
    [2]
    2. continuous casting mold according to claim 1, characterized in that the continuous casting mold (1) has a connection for introducing a cooling fluid into the cooling jacket on the lower end face.
    [3]
    3. continuous casting mold according to claim 1, characterized in that the continuous casting mold (1) has a connection for carrying out a cooling fluid out of the cooling jacket on the upper end side.
    [4]
    4. continuous casting mold according to claim 1, characterized in that the inner tube (2) consists of a copper alloy.
    [5]
    5. continuous casting mold according to claim 1, characterized in that the sleeve (7) and the outer tube (8) consist of steel. 35
    [6]
    6. continuous casting mold according to claim 1, characterized in that the sleeve (7) is releasably connected to the inner tube (2). 11 324
    [7]
    7. continuous casting mold according to claim 1, characterized in that the sleeve (7) on the outer lateral surface has a seal (9). 5
    [8]
    8. continuous casting mold according to claim 1, characterized in that the sleeve (6) is made in one piece, wherein the inner tube (2) with the sleeve (7) at an operating temperature of the continuous casting mold (1) forms an interference fit 10.
    [9]
    9. continuous casting mold according to claim 1, characterized in that the sleeve (7) is designed to be split, wherein one part is designed to be braced against another part of the sleeve 15.
    [10]
    10. continuous casting mold according to claim 9, characterized in that the sleeve (7) in a plane which extends through the longitudinal axis (3) of the inner tube (2), divided 20 is executed.
    [11]
    11. continuous casting mold according to claim 1, characterized in that the inner tube (2) and the outer tube (8) have a straight longitudinal axis (3). 25
    [12]
    12. continuous casting mold according to claim 1, characterized in that the inner tube (2) and the outer tube (8) have a curved longitudinal axis (3).
    [13]
    13. continuous casting mold according to claim 1, wherein all cooling slots (5) in a normal plane to the longitudinal axis (3) have a first flow-through surface; wherein the cooling jacket between the inner tube (2) and the outer tube (8) has a second flow-through surface in a normal plane to the longitudinal axis (3), characterized in that the first flow-through surface is between 50 and 200% of the second flow-through surface. 12 324
    [14]
    14. Continuous casting machine with a continuous casting mold according to one of the preceding claims, characterized in that, during operation of the continuous casting machine, the meniscus of a liquid molten metal is arranged in the longitudinal region. 12 324

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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3411359A1|1984-03-28|1985-10-31|Mannesmann AG, 4000 Düsseldorf|CONTINUOUS CHOCOLATE FOR ROUND OR BLOCK CROSS SECTIONS, ESPECIALLY FOR THE POURING OF LIQUID STEEL|
    EP1792676A1|2005-12-05|2007-06-06|KM Europa Metal Aktiengesellschaft|Mould for continuous casting of metal|
    DE102005059712A1|2005-12-12|2007-06-21|Km Europa Metal Ag|mold|
    FR2423285B1|1978-04-17|1983-01-07|Siderurgie Fse Inst Rech|
    FI852493L|1985-06-24|1986-12-25|Outokumpu Oy|KOKILL.|
    CH685432A5|1992-06-11|1995-07-14|Concast Standard Ag|Mold for the continuous casting of metal, particularly of steel in billet and Vorblockquerschnitte.|
    LU88393A1|1993-08-20|1995-03-01|Wurth Paul Sa|Continuous casting ingot mold|
    US5771958A|1995-09-14|1998-06-30|Ag Industries, Inc.|Mold for continuous casting system|
    DE19859040A1|1998-12-21|2000-06-29|Km Europa Metal Ag|Mold tube and method for recalibrating a mold tube|
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    JP4202718B2|2002-10-28|2008-12-24|株式会社神戸製鋼所|High frequency electromagnetic casting mold for continuous casting of molten metal|
    AT296174T|2003-04-16|2005-06-15|Concast Ag|PIPE COIL TO THE CASTING|
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    CN109093084B|2018-09-29|2020-03-31|东北大学|Method for producing continuous casting sheet billet|
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