• 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 invention relates to a device (1) for casting metal / steel, comprising a distributor, at least one mold (2) arranged on a riser (3) with or without at least one intermediate halved washer (8), which riser is provided with at least one channel (4 , 4a, 4b). The channel leads the molten metal / steel from the distributor to the mold. One or more compartment devices (10) comprising a body (12) are arranged to be inserted into the channel and are located along the channel (4,4a) and comprise a second channel part (4b), which extend vertically upwards and which have a tapered portion (4d) at a portion of the second channel portion (4b) closest to the underside of the mold, and a third channel portion (4c) in the form of a bottom hole, in which the body is located. The body (12) is arranged to be inserted into the second channel part (4b) by the same floating up in the second channel part, when the flow of molten metal / steel has almost ceased or has ceased, and is arranged to get stuck in the tapered portion (4d) of said second channel part. (Fig. 1)
    公开号:SE1400267A1
    申请号:SE1400267
    申请日:2014-05-27
    公开日:2015-11-28
    发明作者:Martin Eriksson
    申请人:Martin Eriksson；
    IPC主号:
    专利说明:

    15 20 25 30 A problem with pitch casting is that the metal / steel solidifies in the channels. This means that when removing ingots with a mold for stripping, the ingot on its underside is stuck / together with the metal / steel which has solidified in the channel leading to the mold, and this metal strand must be pulled off / cut.
    This complicates the removal of the mold with wide ingots from the riser and the removal of the ingot from the mold. The metal strand formed on the underside of the ingot is referred to in the following description and claims as a casting pin.
    When casting brittle metals, this casting pin breaks off relatively easily, while when casting tough metals, this casting pin must be removed from the ingot mechanically by e.g. a cutting torch.
    During subsequent processing of the ingot, such as e.g. rolling or reheating, this casting pin can be a problem if it is not removed properly.
    From the international patent application PCT / SE20l3 / 051417 a device for casting metal / steel is known. This device is particularly suitable for ridge casting as the distance from the horizontal channel or channels in the riser plane to the underside of the mold is relatively short.
    In some applications of riser casting, it is desirable to place at least one washer between the mold and the riser in order to protect the riser. However, this means that the distance between the bottom of the mold and the horizontal channel or channels in the riser becomes larger, whereby the length of the vertical channel, which is located below the mold, becomes relatively long.
    This means that the casting pin in step casting in accordance with the device described in the above-mentioned patent application becomes approximately as long as the length of the vertical channel. This casting pin must then be removed on e.g. above mentioned method, which entails disadvantages.
    SUMMARY OF THE INVENTION The object of the invention is to completely or partially eliminate the above-mentioned disadvantages.
    This object is achieved with a device for riser casting metal / steel, comprising a distributor for distributing molten metal / steel, at least one mold arranged on a riser with or without at least one perforated tray, which riser is provided with at least one channel with refractory material, which channel is arranged to, seen in the flow direction of the melt, first extend substantially vertically downwards from the distributor, then substantially horizontally and then substantially vertically upwards to open at the bottom of the mold and to guide the molten metal / steel from the distributor to the mold for casting an ingot, and a compartment device comprising a body arranged to be inserted into the channel, when the flow of molten metal / steel has almost ceased or has ceased to separate it, and it is characteristic of the invention that one or more compartment devices are placed along channel and comprises a second channel part, which extends vertically upwards and which has a tapered a portion closest to the underside of the mold, and a third channel portion in the form of a bottom hole extending in the opposite direction to the second channel portion and in line therewith that the body, in the non-dividing position, is located in the third channel portion, that a means are provided in the channel part, which means extends to the bottom of the channel part and which means enables molten metal / steel to flow to the underside of the body, that the body has a density which is lower than the density of the molten metal / steel, that the body is provided with an oblique upper surface, which is inclined upwards in the direction of flow of the melt in the channel, and that the body is arranged to be introduced into the second channel part by the same floating up in the second channel part, when the flow of molten metal / steel has in the nearest has ceased or has ceased, and is arranged to get stuck in the tapered portion of said second channel part.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention is described in more detail below with reference to the accompanying drawing, in which - Fig. 1 is a schematic, partial, partially sectioned side view showing a mold placed on a perforated tray placed on a riser with non-dividing refractory metal channel according to an embodiment of a compartment device according to the invention, - Fig. 2 is a view similar to that of Fig. 1 with the position upright of a body for dividing the channel, and - Fig. 3 is a sectioned side view of a further embodiment of a compartment device according to the invention. with the inflated position of a body for dividing the canal.
    Description of preferred embodiments Figs. 1 and 2 schematically show a partial, partially sectioned side view of a device 1 for casting metal / steel.
    The device 1 comprises a distributor (not shown) with the trumpet for distributing molten metal, preferably molten steel, to at least one mold 2 arranged on a riser 3. In the embodiment shown, a perforated washer 8 is placed between the mold and the riser. It is obvious to the person skilled in the art that the perforated tray 8 can consist of two or more perforated trays placed on top of each other. Usually a plurality of molds 2 are arranged on the same riser with or without intermediate perforated washer 8. The riser is provided with at least one channel 4 for metal with refractory material, preferably refractory brick, which channel 4 is arranged to, seen in the flow direction of the molten metal, first stretch substantially vertically downwards from the distributor, then substantially horizontally and then substantially vertically upwards to open in the upper side 5 of the riser 3 or in the upper side of the well-provided tray 8 and thus in the bottom 6 of the respective mold 2.
    During casting, a suitable amount of liquid metal is filled in the distributor, the metal flowing through the refractory channels 4 and at the same time filling all the molds 2 to the same level, after which the metal is allowed to freeze to form an ingot 7.
    According to the invention, a device 10 for dividing / blocking the channel to the respective mold 2 is arranged below the upper surface 5 of the riser plane 3. The compartment device 10 according to the invention is arranged at the end of the channel 4 and under the mold 2.
    The compartment device 10 comprises a part of the refractory channel 4, which opens into the bottom 6 of the mold 2, which part in the following description is called the mouth stone 11.
    As can be seen from the figures, the mouth stone 11 constitutes a final stone of the channel 4 and forms at least the part of the respective channel 4 which opens into the bottom 6 of the mold 2. The mouth stone 11 is provided with at least a first channel part 4a, which extends substantially horizontally and forms a extension of the channel 4, and on the other hand a second channel part 4b, which extends substantially vertically and which opens into the upper side 5 of the riser plane 3 or into the upper side of the well-provided washer 8. The mouth stone 11 is also provided with a third channel part 4c which extends in the opposite direction to the second channel part 4b and in line therewith. Before casting, the body 12 is placed in the third channel part 4c. This body 12 is preferably homogeneous and consists of a material which resists the temperature of the molten metal.
    In the illustrated embodiment of the device 10 for dividing the channel 4, the third channel part 4c is designed as a bottom hole, see Figs. 1-3. At least one means 14 is arranged in the channel part 4c, which means extends to at least the bottom 4e of the third channel part 4c and which means enables molten metal to flow to the underside of the body 12. This member 14 may consist of e.g. at least one groove or groove 14 arranged in the leading edge, seen in the flow direction of the melt, or in some other part of the third channel part 4c. This groove extends to the bottom 4e of the third channel part 4c and possibly below at least a part of the body 12, see Fig. 1. Alternatively, the member 14 may consist of a gap 14 between the body 12 and the third channel part 4c, which gap extends completely or partly around the circumference of the third channel part 4c.
    The body 12 is preferably provided with a completely or partially oblique upper surface 12c, which slopes obliquely upwards in the flow direction of the melt, and has a density which is less than the density of the metal melt.
    In the above-mentioned embodiment, when casting, the flow force of the molten metal / steel will act on the upper side of the body 12, and in particular on the inclined surface 12c of the body 12, in case the body is formed with such an inclined surface, thereby depressing the body. 12 in the third channel part 4c, while a part of the molten metal will flow into the member 14 and under the body 12, which then acts to lift the body 12 in combination with the buoyancy of the body 12.
    More specifically, the inclined surface 12c of the body 12 and / or the density of the body 12 must be adapted to the density of the molten metal, so that, as long as the molten metal flows in the channel 4, the lifting force of the body 12 is lower than the flow force of the molten the metal, and when the flow of molten metal in the channel 4 has almost ceased or has ceased, the body 12 floats up in the second channel part 4b and thereby divides it. What is characteristic of this body 12 is that it is free-flowing in at least the second channel part 4b, i.e. that it is not controlled in said second channel part 4b. The body 12 should also have a length greater than the diameter of the vertical channel.
    In the embodiment shown in Figs. 1-3, a perforated washer 8 is placed between the underside of the mold and the upper side of the riser in order to protect the riser. However, this means that the second channel part 4b becomes relatively long. The perforated tray is provided with a suitable hole through which the refractory brick with the second channel part 4b extends.
    In order that the body 12 does not float too far into the second channel part 4b, said channel part 4b is provided with an upper portion 4d closest to the underside of the mold with a smaller cross-section than the cross-section of the other portion of the second channel part 4b.
    As a result, the body 12, as it floats up in the second channel part 4b, will become attached to said upper part 4d and thereby divide said channel part 4b.
    In order that the body 12 does not rotate as the molten metal flows in the channels, so that the inclined surface 12c is no longer arranged at an optimal angle to the direction of flow of the molten metal, the underside of the body 12 or the bottom 4e of the third channel part 4c is provided with a lug 16 which is arranged to cooperate with a complementary groove 15 arranged at the underside of the body 12 or in the bottom 4e of the third channel part 4c.
    As shown in Fig. 2, in the divided position of the compartment device 10, a casting pin 20 is obtained at the bottom of the ingot 7 not shown. This casting pin 20 extends into the upper portion 4d of the second channel part 4b and has a fixed length in depending on how far the body 12 floats up in the second channel part 4b, i.e. the longer the body 12 floats up in the second channel part 4b, the shorter the casting pin becomes.
    By giving the casting pin 20 a definite, short length, the ingot with a mold can be easily removed from the riser plane 3 and the washer 8 without having to pull off / cut the solidified metal strand, which in the prior art is formed in the channel 4. easily moved to a stripper site without unwanted remnants of the metal string accompanying the ingot and mold.
    In order for the body 12 to be able to easily float up in the second channel part 4b to the upper part 4d with a smaller cross-section and get stuck there, the second channel 4b and the body 12 are so dimensioned in relation to each other that there is a suitable space / clearance between the outside and the inside of the second channel part 4b so that molten metal / steel can flow in this space, as the body floats up in the second channel part 4b.
    In the embodiment according to Fig. 3, at least one continuous channel 17 is arranged in the body 12 to facilitate the flow of molten metal from the top of the body 12 to its underside, when the same floats up in the second channel 4b. This or these continuous channels 17 can replace or constitute a complement to the above-mentioned space / play between the outside of the body 12 and the inside of the second channel part 4b.
    When the body 12 is provided with the at least one through hole 17, after casting, the solidified metal / steel will extend through the body, which has the consequence that the casting pin 20 is connected to the metal / steel in the channel below the body 12. When the diameter of the at least one through hole 17 is small in relation to the diameter of the second channel 4b, this has no or only a small effect on the subsequent stripping.
    In the same way, a thin-walled metal / steel sleeve can be formed in the space / clearance between the outside of the body and the inside of the other channel part. This sleeve also has no or only a small effect on the subsequent stripping.
    In a preferred embodiment, the cross section of the channel parts 4b, 4c, the upper part 4d of the channel part 4b and the body 12 is preferably circular.
    权利要求:
    Claims (8)
    [1]
    Device (1) for riser casting of metal / steel, comprising a distributor for distributing molten metal / steel, at least one mold (2) arranged on a riser (3) with or without at least one intermediate perforated washer (8), which riser is provided with at least one channel (4,4a, 4b) of refractory material, which channel is arranged to, seen in the flow direction of the melt, first extend substantially vertically downwards from the distributor, then substantially horizontally and then substantially vertically upwards to open into bottom (6) of the mold (2) and directing the molten metal / steel from the distributor to the mold for casting an ingot (7), and a compartment device (10) comprising a body (12) arranged to be inserted into the channel (4b ), when the flow of molten metal / steel has almost ceased or has ceased to divide it, characterized in that one or more compartment devices (10) are located along the channel (4,4a) and comprise a second channel part (4b), which extend vert icing upwards and having a tapered portion (4d) closest to the underside of the mold, and a third channel portion (4c) in the form of a bottom hole extending in the opposite direction to the second channel portion (4b) and in line therewith, that the body ( 12), in the non-dividing position, is placed in the third channel part (4c), that a means (14) is arranged in the channel part (4c), which means extends to the bottom of the channel part (4c) and which means enables melting metal / steel can flow to the underside of the body (12), that the body has a density which is lower than the density of the molten metal / steel, that the body (12) is provided with an oblique upper surface (12c), which slopes upwards seen in the flow direction of the melt in the channel (4), and that the body (12) is arranged to be inserted into the second channel part (4b) by the same floating up in the second channel part, when the flow of molten metal / steel has almost ceased or 30 ll has ceased, and is arranged to get stuck in the tapered portion (4d) of said nda second channel part.
    [2]
    Device according to claim 1, characterized in that the perforated washer (8) is located between the underside of the mold (2) and the upper side of the riser (3) and through which washer the second channel part (4b) is arranged to extend.
    [3]
    Device according to claim 1 or 2, characterized in that the member (14) is a groove (14) arranged in the leading edge, seen in the flow direction of the melt, of the channel part (4c) and extends to the bottom (4e) of the channel part (4c).
    [4]
    Device according to claim 1 or 2, characterized in that the member (14) consists of a gap (14) between the body (12) and the channel part (4c), which space extends wholly or partly around the circumference of the channel part (4c).
    [5]
    Device according to one of Claims 1 to 4, characterized in that the body (12) is free-floating in at least the second channel part (4b).
    [6]
    Device according to one of Claims 1 to 5, characterized in that either the underside of the body (12) or the bottom (4e) of the channel part (4c) is provided with a lug (16) arranged to be placed in a corresponding complementary groove (15) arranged at either the underside of the body (12) or in the bottom (4e) of the channel part (4c) to hold an oblique upper surface (12c) of the body (12) against the flow direction of the melt in the channel (4).
    [7]
    Device according to one of Claims 1 to 6, characterized in that the second channel part (4b) and the body (12) are dimensioned relative to one another in such a way that there is a suitable space / clearance between the outside of the body and the inside of the second channel part so that molten metal / steel can flow in this space, as the body floats up in the second channel part (4b), and / or at least one continuous channel (17) arranged in the body (12) to facilitate the flow of molten metal 12 from the top of the body (12) to its underside, when the same floats up in the second channel part (4b).
    [8]
    Device according to one of Claims 1 to 7, characterized in that the body (12) is made of refractory material.
    类似技术:
    公开号 | 公开日 | 专利标题
    US10421120B2|2019-09-24|Metal casting apparatus, cast work piece and method therefor
    RU2533221C1|2014-11-20|Method to eliminate shrinkage cavity in ingot being cast
    AU2008291636A1|2009-03-05|Sequential casting of metals having the same or similar co-efficients of contraction
    SE1400267A1|2015-11-28|Metal / steel ladder casting device
    CN105436444A|2016-03-30|Continuous casting blank section casting cold material placing structure and placing method thereof
    SE434571B|1984-07-30|SET AND DEVICE FOR Separating slag and dropping melted steel from a container
    JP6439790B2|2018-12-19|Method for producing cast article and breathable mold
    JP2006346688A|2006-12-28|Long nozzle with swing flow
    KR101864562B1|2018-06-04|Pressure casting structure of low-pressure casting device and low-pressure casting device having the sprue
    JP6454206B2|2019-01-16|Tundish for continuous casting and continuous casting method using the tundish
    US9694417B2|2017-07-04|Pivotable tundish and a method for continuous casting a metal alloy, use of a pivotable tundish and an elongated cast bar of a metal alloy
    JP2011189382A|2011-09-29|Long nozzle
    JP6904132B2|2021-07-14|Tandish for continuous casting
    CN105328172A|2016-02-17|Aluminium alloy circular ingot cast shunting plate
    JP5505969B2|2014-05-28|Long nozzle
    JP5025312B2|2012-09-12|Method of pouring into casting mold for ingot casting to improve the surface of steel ingot by generating swirling flow in runner
    JP6491039B2|2019-03-27|Bottom pouring method
    JP6198648B2|2017-09-20|Ingot casting method
    EP2928629A1|2015-10-14|Arrangement for casting from the bottom of metal/steel
    JP6454204B2|2019-01-16|Tundish for continuous casting and continuous casting method using the tundish
    JP6634542B2|2020-01-22|Method for multiple casting of metal strands
    JP5450205B2|2014-03-26|Pouring nozzle
    JP5074197B2|2012-11-14|Metal melting apparatus and manufacturing method
    JP6317478B2|2018-04-25|Annular weir
    DE704091C|1941-03-22| in deep molds
    同族专利:
    公开号 | 公开日
    SE538001C2|2016-02-02|
    WO2015183166A1|2015-12-03|
    EP3148727A1|2017-04-05|
    EP3148727A4|2018-02-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US129957A|1872-07-30|Improvement in ingot-wioids |
    US333929A|1886-01-05|Casting metal ingots |
    SE206524C1|
    GB1394905A|1971-05-25|1975-05-21|Graenges Eng Ab|Method and apparatus in the casting of ingots by bottom- pouring techniques|
    JP4903281B1|2010-10-18|2012-03-28|黒崎播磨株式会社|Pouring type pouring pipe and pouring method|
    EP2928629A4|2012-11-30|2016-05-18|Martin Eriksson|Arrangement for casting from the bottom of metal/steel|CN111889627A|2020-08-04|2020-11-06|江苏泽恩机械科技有限公司|Casting mold for gear and working method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1400267A|SE538001C2|2014-05-27|2014-05-27|Metal / steel ladder casting device|SE1400267A| SE538001C2|2014-05-27|2014-05-27|Metal / steel ladder casting device|
    EP15800572.8A| EP3148727A4|2014-05-27|2015-05-26|Arrangement for casting from the bottom of metal/steel|
    PCT/SE2015/050604| WO2015183166A1|2014-05-27|2015-05-26|Arrangement for casting from the bottom of metal/steel|
    [返回顶部]