EP4072750B1 - Verfahren zum giessen von schmelze mittels eines schmelzebehälters in welchem ein schmelzeaufnahmeraum ausgebildet ist - Google Patents

Verfahren zum giessen von schmelze mittels eines schmelzebehälters in welchem ein schmelzeaufnahmeraum ausgebildet ist Download PDF

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Publication number
EP4072750B1
EP4072750B1 EP20838330.7A EP20838330A EP4072750B1 EP 4072750 B1 EP4072750 B1 EP 4072750B1 EP 20838330 A EP20838330 A EP 20838330A EP 4072750 B1 EP4072750 B1 EP 4072750B1
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EP
European Patent Office
Prior art keywords
melt
receiving space
container
lance
filling
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.)
Active
Application number
EP20838330.7A
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German (de)
English (en)
French (fr)
Other versions
EP4072750C0 (de
EP4072750A1 (de
Inventor
Gerhard Sieglhuber
Harald SEHRSCHÖN
Johannes VOITHOFER
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.)
Fill GmbH
Original Assignee
Fill GmbH
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Filing date
Publication date
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Application granted granted Critical
Publication of EP4072750C0 publication Critical patent/EP4072750C0/de
Publication of EP4072750B1 publication Critical patent/EP4072750B1/de
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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
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/28—Melting pots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above 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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
    • 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
    • B22D41/12—Travelling ladles or similar containers; Cars for ladles
    • 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
    • B22D41/12—Travelling ladles or similar containers; Cars for ladles
    • B22D41/13—Ladle turrets
    • 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
    • B22D41/14—Closures

Definitions

  • the invention relates to a method for casting melt by means of a melt container in which a melt receiving space is formed.
  • the DE 10 2007 011 253 A1 discloses a casting device with a melt container for metallic materials.
  • An injector is arranged on the underside of the melt container and has an opening for discharging the melt.
  • a closing device is designed, which serves to close the opening.
  • the WO 2019/204845 A1 discloses a low-pressure casting device.
  • the object of the present invention was to overcome the disadvantages of the prior art and to provide a method for casting melt.
  • the scope of the present invention is defined by independent claim 1, and further embodiments of the invention are set out in dependent claims 2-11.
  • the method according to the invention has the advantage that the oxide skin that forms is not introduced into the casting mold. This can improve the quality of the cast workpiece. Furthermore, the method according to the invention has the advantage that the oxide skin does not get into the spout of the melt container, which means that contamination of the spout of the melt container can be prevented. In particular, this can ensure that the melt container remains functional over a longer period of time, since contamination of the spout would reduce the functionality of the melt container for future castings. In addition, the measures according to the invention can prevent freezing of oxide skin residues or melt residues in the sink. Especially with aluminum or aluminum alloys, an oxide skin forms very quickly on the surface.
  • the lance in order to fill the melt receiving space of the melt container, the lance is immersed in a melting crucible filled with melt in such a way that the pouring opening of the lance is below the crucible filling level during the entire filling process.
  • This has the advantage that by immersing the lance into the melting crucible filled with melt, the melt can be introduced into the melt receiving space of the melt container via the lance, which also functions as a spout.
  • the lance can be immersed so deeply in the melting crucible that the melt penetrates from the melting crucible into the melt receiving space of the melt container due to gravity due to the effect of the vessels communicating with one another.
  • a negative pressure can be applied in the melt receiving space of the melt container, whereby the melt is drawn from the melting crucible into the melt receiving space.
  • the melt receiving space of the melt container has a non-wettable surface, in particular a ceramic surface, to which the oxide skin of the melt does not adhere.
  • melt container when filling the melt container with melt between 1% and 30%, in particular between 5% and 20%, preferably between 10% and 15% more melt is taken into the melt receiving space, than is required for casting the cast workpiece. Filling in this value range in particular results in a surprisingly good efficiency of the casting process. In addition, when filling in this value range, freezing of the melt can be avoided particularly efficiently and good quality of the melt can be achieved.
  • melt receiving space of the melt container it is possible for the melt receiving space of the melt container to be completely emptied at periodic intervals and/or before the melt container is shut down, and for the oxide skin to be blown out of the melt receiving space by means of a gas blast.
  • This has the advantage that even when the Melt container no oxide skin remains in the melt receiving space or that the melt receiving space can be thoroughly cleaned at periodic intervals.
  • the oxide skin located on the surface of the melt in the melt receiving space is vacuumed off at periodic intervals and/or before the melt container is shut down. This has the advantage that no oxide film remains in the melt receiving space even when the melt container is shut down or that the melt receiving space can be thoroughly cleaned at periodic intervals.
  • the oxide skin located on the surface of the melt in the melt receiving space is drained off at periodic intervals and/or before the melt container is shut down via an oxide skin drain opening formed in the melt container. This has the advantage that no oxide film remains in the melt receiving space even when the melt container is shut down or that the melt receiving space can be thoroughly cleaned at periodic intervals.
  • the melt receiving space is designed in such a way that it is sealed in a gas-tight manner when it is at least partially filled with melt, with a gas valve being formed, by means of which gas can be introduced into or discharged from the melt receiving space, with the melt container being filled melt, the gas valve is open so that the melt can flow from the melting crucible into the melt receiving space via the lance, and after the melt inflow process, the gas valve is closed and then, with the gas valve closed, as much melt is drained from the melt receiving space back into the melting crucible via the lance, until a negative pressure is established which is sufficiently large to keep the remaining melt in the melt receiving space.
  • melt container does not have to be designed to be able to generate negative pressure in the melt receiving space, but that only one valve is sufficient for introducing gas into the melt receiving space or for releasing gas from the melt receiving space.
  • melt is pressed into the melt receiving space by means of a pressure line, such as the line of a low-pressure furnace, which is coupled to the lance.
  • the melt container is immersed so deeply in a crucible filled with melt that the melt flows into the melting crucible through the communicating vessels via the lance due to gravity. Furthermore, it can be provided that when casting the at least one cast workpiece, the melt from the melt container is admitted into the casting mold in a first process step at a first inflow speed until the pouring opening is at least partially immersed in the melt introduced into the casting mold and that in a second process step the melt is let into the mold at a second inflow speed, the second inflow speed being greater than the first inflow speed.
  • This has the advantage that the turbulence when the melt is admitted into the mold can be kept as low as possible.
  • the lance when filling the melt container with melt in a first process step the lance is moved, in particular pivoted, on the surface of the melting crucible in such a way that the oxide skin located on the surface is torn open and in a second process step the lance is moved in the torn area the oxide skin is immersed in the melt in the crucible.
  • the oxide skin is torn open using the immersion aid.
  • a lance in the sense of this document is seen as a spout with a narrowed cross-section in relation to the melt container.
  • the lance is at least partially tubular.
  • melt container when filling the melt container with melt, so much more melt is taken up into the melt receiving space that when the melt container is filled again with melt, the level of the melt surface of the melt remaining in the melt receiving space is above the lance, in particular within the melt receiving space .
  • This has the advantage that the oxide skin on the melt surface is in an area with an approximately constant cross-section remains and is therefore not excessively deformed. This means that the oxide skin is not mixed with the melt.
  • Fig. 1 shows a first exemplary embodiment of a melt transport device 1, which is used to transport melt 2.
  • the melt transport device 1 has a melt container 3, in which a melt receiving space 4 is formed, which serves to hold the melt 2.
  • the melt receiving space 4 has a surface 38 on its inside, which is in contact with the melt 2 when the melt receiving space 4 is filled.
  • the melt transport device 1 includes a spout 5, which is coupled to the melt container 3.
  • the spout 5 can be designed as an integral part of the melt container 3.
  • the spout 5 is designed as a separate component, which is coupled to the melt container 3.
  • the spout 5 has a pouring opening 6 through which the melt 2 received in the melt container 3 can flow out of the melt transport device 1 into a casting mold.
  • the pouring opening 6 can have a circular cross section. Furthermore, it is also conceivable that the pouring opening 6 has a square cross section. In addition, it is also conceivable that the pouring opening 6 has a rectangular cross section, in particular a longitudinal extent of the pouring opening 6, which runs normal to the cutting plane, can have a large extent. For example, the longitudinal extent of the pouring opening 6 can be up to 2000mm, in particular up to 500mm. This is particularly advantageous for elongated cast workpieces, such as cylinder blocks or cylinder heads.
  • a gas valve 7 is formed, which is fluidly connected to the melt receiving space 4 and which is designed to regulate the gas entry into the otherwise gas-tight melt receiving space 4.
  • the gas valve 7 is arranged above a filling level maximum 8, so that no melt 2 can flow into the gas valve 7.
  • the filling level maximum is selected so that when the melt container 3 is filled with melt 2 up to the filling level maximum 8, a gas-filled space remains in the melt receiving space 4, in which a pressure can be adjusted using the gas valve 7.
  • a pressure detection means 9 can be provided, by means of which an internal pressure in the melt receiving space 4 can be detected.
  • the gas pressure in the melt receiving space 4 can thus be adjusted specifically using the gas valve 7.
  • the melt transport device 1 has a fill level sensor 10, which serves to detect an actual fill quantity level 11.
  • the actual filling quantity level 11 can thus be continuously recorded and compared with a target filling quantity level 12.
  • a weighing cell 39 can be designed, by means of which the weight and thus the fill level of the melt receiving space 4 can be recorded.
  • the melt transport device 1 has a siphon 13 which has a reservoir 14 which is arranged between the melt receiving space 4 and the pouring opening 6. Furthermore, a siphon wall 15 is formed, which projects into the reservoir 14 in such a way that when the reservoir 14 is filled with melt up to an overflow level 17, the melt receiving space 4 is closed gas-tight with respect to the outside of the melt container 16.
  • the siphon 13 is designed in the spout 5 so that the reservoir 14 has the overflow level 17, with the siphon wall 15 being designed such that it has a lower edge 32 of the siphon wall.
  • the siphon wall 15 projects into the reservoir 14 in such a way that a lower edge 32 of the siphon wall is arranged at a lower level than the overflow level 17.
  • Fig. 1 the melt container 3 is shown partially filled with melt 2. How out Fig. 1 As can be seen, the structure described results in a first melt surface 18, which is arranged on the outside of the melt container 16 or is assigned to it. Further a second melt surface 19 is formed, which is arranged in the melt receiving space 4 of the melt container 3. The second melt surface 19 corresponds to the filling level 11. The ambient pressure of the melt container 3 acts on the first melt surface 18. The internal pressure of the melt receiving space 4 acts on the second melt surface 19.
  • the first melt surface 18 is slightly below the overflow level 17. This means that spilling of the melt 2 can be avoided as best as possible.
  • This level difference can be achieved, for example, by reducing the pressure in the melt receiving space 4.
  • the melt container 3 can be shaken or slightly tilted immediately after filling in order to achieve this level difference immediately after the melt container 3 has been filled.
  • the melt container 3 it is also possible for the melt container 3 to be manipulated while the level of the first melt surface 18 is the same as the overflow level 17.
  • the spout 5 is designed in the form of a lance 20 and that the siphon 13 is arranged on the underside of the lance 20.
  • the diameter of the lance 20 is shown to be excessively large to improve clarity.
  • the lance 20 is designed to be slimmer than shown and therefore has a greater length compared to its diameter.
  • siphon 13 is integrated directly into the lance 20.
  • a siphon 13 integrated into the lance 20 can work according to the same operating principle as described here.
  • the siphon 13 can comprise an upwardly open container 21, which is coupled to the spout 5 by means of struts 22.
  • an upper edge of the container 21 simultaneously defines the overflow level 17.
  • the second melt surface 19 lowers, as a result of which the melt 2 located in the melt receiving space 4 runs through a pouring channel 23 into the reservoir 14, whereby the first melt surface 18 is raised. The first The melt surface 18 rises until the melt 2 runs out over the overflow level 17.
  • the container 21, which is open at the top, is arranged on the spout 5 in a changeable manner.
  • an immersion aid 47 is arranged on the underside of the lance 20a, 20b.
  • the dipping aid 47 serves to tear open the oxide skin located on the surface of the melting crucible 25 when the lance 20a, 20b is dipped into the melting crucible 25, so that the lance 20a, 20b can be dipped under the layer of the oxide skin to fill the melt container and further When filling the melt container 3, the oxide skin should, if possible, not get into the melt receiving space 4.
  • the immersion aid 47 has a pointed shape, so that tearing open the oxide skin is made easier.
  • the underside of the lance 20a, 20b or the immersion aid 47 is designed in such a way that they do not have any protruding surfaces, so that when the lance 20a, 20b is pulled out of the crucible 25, there is as little oxide skin as possible on the lance 20a, 20b adheres.
  • all upwardly directed surfaces of the lance 20a, 20b are designed to be conical or to point obliquely downwards, so that the oxide skin is rejected when the lance 20a, 20b is pulled out.
  • Fig. 2a As can be seen, it can be provided that the melt 2 is provided in a melting crucible 25 of a melting furnace 24 and that the melt container 3 is positioned above the melting crucible 25.
  • the melt container 3 can be at least partially immersed in the melt 2 arranged in the melting crucible 25 in a further process step, so that the pouring opening 6 is immersed in the melting crucible 25 below the crucible filling level 27 of the melt 2. If the gas valve 7 is now opened or is already open during immersion, the melt 2 can flow into the melt receiving space 4 of the melt container 3 via the pouring opening 6. This position of the melt container 3 can also be referred to as the filling position 26.
  • the actual filling level 11 will adapt to the furnace filling level 27 when the melt container 3 is filled.
  • the gas valve 7 is subsequently closed and the melt container 3 is raised, the actual filling level 11 will decrease until the negative pressure in the melt receiving space 4 is sufficiently large to keep the melt 2 at the same level due to the pressure difference between the interior pressure in the melt receiving space 4 and the ambient pressure.
  • the gas valve 7 can be closed and the melt container 3, as in Fig. 2c visible, can be raised again.
  • melt container 3 When the melt container 3 is lifted, as much melt 2 flows from the melt receiving space 4 back into the melting crucible 25 until a pressure that is reduced compared to the environment is established in the melt receiving space 4, which holds the melt in the melt receiving space 4.
  • melt 2 is then drained from the melt receiving space 4 by opening the gas valve 7 until a desired fill level of melt 2 in the melt receiving space 4 is reached.
  • the desired fill level of melt 2 can be selected in this way
  • This desired level of melt 2 in the melt receiving space 4 is selected so that after casting the cast workpiece or workpieces, a remainder of melt 2 remains in the melt receiving space 4.
  • melt container 3 can be transported to its casting position.
  • Fig. 3a As can be seen, it can be provided that immediately before the melt container 3 is refilled, a remainder of melt 2, which has an oxide skin formed on the melt surface 19, is located in the melt receiving space 4 of the melt container 3. In other words, the melt 2 was not completely poured out during the previous casting process. Of course, several cast workpieces can also have been cast, although not all of the melt 2 located in the melt receiving space 4 of the melt container 3 was consumed when the last cast workpiece was cast.
  • melt container 3 only dips so far into the melting crucible 25 that the pouring opening 6 is below the crucible filling level 27.
  • the melt receiving space 4 can be evacuated by means of a vacuum pump 28, whereby the melt 2 is drawn into the melt receiving space 4.
  • the gas valve 7 can then be closed in order to keep the actual filling level 11 in the melt receiving space 4 at a constant level during the transport of the melt transport device 1.
  • the melt transport device 1 is filled by means of a low-pressure furnace 33 known to those skilled in the art.
  • a riser pipe 34 which projects into the melting crucible 25 of the low-pressure furnace 33, can be coupled directly to the pouring opening 6 in order to establish a flow connection between the riser pipe 34 and the melt receiving space 4. If the gas valve 7 is opened during the filling process, the function of the low-pressure furnace 33 can be used to push the melt 2 upwards in the riser pipe 34 until the melt receiving space 4 is filled with melt 2 up to its target filling level 12.
  • the riser pipe 34 of the low-pressure furnace 33 and the spout 5 are coupled to one another by means of a coupling 31.
  • the siphon 13 is tubular.
  • Various design options for the pouring opening 6 are shown.
  • the pouring opening 6 is round. Such a shape of the pouring opening 6 results when the pipe which forms the siphon 13 is cut off normal to the pipe center axis.
  • a drip nose 35 is formed on the pouring opening 6.
  • the drip nose 35 serves to keep the oxide adhesion to the pouring opening 6 as low as possible when casting a cast workpiece.
  • the pouring opening 6 also, as in the exemplary embodiment Fig. 6 , arranged at right angles to the pipe center axis.
  • the pipe is in the exemplary embodiment Fig. 6 and Fig. 7 in the area of the pouring opening 6 when the lance 20 is in a vertical position, it is slightly inclined downwards, with a pipe end angle 36 being formed at an angle smaller than 90°.
  • the pipe is cut obliquely in the area of the pouring opening 6, so that the pouring opening 6 is oval.
  • the pouring opening 6 is fan-shaped and thus has a greater extent in its width than the extent in its height.
  • a pouring opening 6 designed in this way is particularly suitable for casting wide cast workpieces.
  • FIG. 10 A further and possibly independent embodiment of the casting device 37 is shown, with the same reference numbers or component names as in the previous ones for the same parts Figures 1 to 9 be used. Around To avoid unnecessary repetitions, refer to the detailed description in the preceding Figures 1 to 9 pointed out or referred to.
  • Fig. 10 shows a first embodiment of a casting device 37 for casting cast workpieces. How out Fig. 10 As can be seen, it can be provided that the melt transport device 1 has a first melt container 3a and a second melt container 3b.
  • the first melt container 3a has a first melt receiving space 4a and a first spout 5a in the form of a lance 20a located at the bottom of the first melt container 3a.
  • the spout 5a has a pouring opening 6a.
  • the second melt container 3b can be designed to be identical to the first melt container 3a.
  • the second melt container 3b has a second melt receiving space 4b and a second spout 5b in the form of a lance 20b located at the bottom of the second melt container 3b.
  • the spout 5b has a pouring opening 6b.
  • the melt transport device 1 can be designed such that both melt containers 3a, 3b can be moved simultaneously and synchronously with one another. In particular, it can be provided that both melt containers 3a, 3b are moved together by means of common drive devices. As a result, the structure of the melt transport device 1 can be kept as simple as possible.
  • the casting device 37 also includes a casting mold 29, which has a mold cavity 30.
  • a first mold 29a is assigned to the first melt container 3a and a second mold 29b is assigned to the second melt container 3b.
  • a pivoting device 40 which has a pivot bearing 41, by means of which the melt containers 3a, 3b can be pivoted about a horizontal axis of rotation 42.
  • each of the melt containers 3a, 3b has its own pivot drive 43 has. The two melt containers 3a, 3b can thus be pivoted individually and independently of one another.
  • the mold 29 can also be pivoted about a horizontal axis.
  • the mold 29 and the melt container 3 can thus be pivoted at the same time.
  • a distance adjustment device 44 is formed, by means of which a distance 45 of the lance 20a of the first melt container 3a and the lance 20b of the second melt container 3b can be adjusted to one another.
  • the distance adjustment device 44 can be as follows Fig. 10 can be seen, for example in the form of a linear adjustment device.
  • the distance adjustment device 44 is designed, for example, in the form of a fastening arm for receiving the melt container 3a, 3b, with a change in the distance 45 being achieved by pivoting the fastening arm and thus the melt container 3a, 3b about a vertical axis can be.
  • FIG. 11 A further and possibly independent embodiment of the casting device 37 is shown, with the same reference numbers or component names as in the previous ones for the same parts Figures 1 to 10 be used. In order to avoid unnecessary repetitions, please refer to the detailed description in the previous sections Figures 1 to 10 pointed out or referred to.
  • the in Fig. 11 Casting device 37 shown has a similar structure to that in Fig. 10 illustrated casting device 37.
  • both melt containers 3a, 3b are arranged on a common receptacle, the pivot bearing 41 being designed such that both melt containers 3a, 3b can be pivoted at the same time about the horizontal axis of rotation 42 by means of the one pivot drive 43.
  • Fig. 12 the lance 20 is coupled to the melt container 3 by means of a quick-release fastener 46, in particular by means of a bayonet fastener.
  • a quick-release fastener 46 in particular by means of a bayonet fastener.
  • a shaped element is formed in the melt container 3, with a recess corresponding to the shaped element being formed on the lance 20. If the lance 20 is placed on the melt container 3 and rotated through a certain angle, the lance 20 can be locked on the melt container 3 using the quick-release fastener 46.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP20838330.7A 2019-12-13 2020-12-11 Verfahren zum giessen von schmelze mittels eines schmelzebehälters in welchem ein schmelzeaufnahmeraum ausgebildet ist Active EP4072750B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA51095/2019A AT523251A1 (de) 2019-12-13 2019-12-13 Verfahren zum Gießen von Schmelze mittels eines Schmelzebehälters in welchem ein Schmelzeaufnahmeraum ausgebildet ist
PCT/AT2020/060446 WO2021113892A1 (de) 2019-12-13 2020-12-11 VERFAHREN ZUM GIEßEN VON SCHMELZE MITTELS EINES SCHMELZEBEHÄLTERS IN WELCHEM EIN SCHMELZEAUFNAHMERAUM AUSGEBILDET IST

Publications (3)

Publication Number Publication Date
EP4072750A1 EP4072750A1 (de) 2022-10-19
EP4072750C0 EP4072750C0 (de) 2023-10-04
EP4072750B1 true EP4072750B1 (de) 2023-10-04

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EP20838330.7A Active EP4072750B1 (de) 2019-12-13 2020-12-11 Verfahren zum giessen von schmelze mittels eines schmelzebehälters in welchem ein schmelzeaufnahmeraum ausgebildet ist

Country Status (6)

Country Link
US (1) US11931796B2 (zh)
EP (1) EP4072750B1 (zh)
CN (1) CN115038532B (zh)
AT (1) AT523251A1 (zh)
MX (1) MX2022007254A (zh)
WO (1) WO2021113892A1 (zh)

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GB2615997A (en) * 2020-11-09 2023-08-30 Eae Elektrik Asansoer Enduestrisi Insaat Sanayi Ve Ticaret Anonim Sirketi Filling device for the joint in energy distribution lines
AT526082B1 (de) * 2022-05-10 2023-11-15 Fill Gmbh Schmelzetransportvorrichtung
CN115780814A (zh) * 2022-11-02 2023-03-14 杭州夸克新材料技术有限公司 一种高精度有色金属粉体成球设备

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WO2021113892A1 (de) 2021-06-17
US11931796B2 (en) 2024-03-19
CN115038532B (zh) 2024-06-25
US20230038351A1 (en) 2023-02-09
CN115038532A (zh) 2022-09-09
MX2022007254A (es) 2022-09-23
AT523251A1 (de) 2021-06-15
EP4072750A1 (de) 2022-10-19

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