EP3990203A1 - Anordnung für den niederdruckguss von hochschmelzenden metallen - Google Patents
Anordnung für den niederdruckguss von hochschmelzenden metallenInfo
- Publication number
- EP3990203A1 EP3990203A1 EP20739274.7A EP20739274A EP3990203A1 EP 3990203 A1 EP3990203 A1 EP 3990203A1 EP 20739274 A EP20739274 A EP 20739274A EP 3990203 A1 EP3990203 A1 EP 3990203A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- melting container
- arrangement according
- mold
- melting
- furnace chamber
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 36
- 239000003870 refractory metal Substances 0.000 title claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 71
- 230000008018 melting Effects 0.000 claims abstract description 70
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 230000006698 induction Effects 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000011819 refractory material Substances 0.000 claims description 8
- 238000009415 formwork Methods 0.000 claims description 7
- 150000002739 metals Chemical class 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000009416 shuttering Methods 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 20
- 239000000155 melt Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000013590 bulk material Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
- F27B14/061—Induction furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/022—Casting heavy metals, with exceedingly high melting points, i.e. more than 1600 degrees C, e.g. W 3380 degrees C, Ta 3000 degrees C, Mo 2620 degrees C, Zr 1860 degrees C, Cr 1765 degrees C, V 1715 degrees C
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
- F27B14/061—Induction furnaces
- F27B14/063—Skull melting type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B2014/0843—Lining or casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B2014/0881—Two or more crucibles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
- F27B2014/104—Crucible linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
- F27B2014/108—Cold crucibles (transparent to electromagnetic radiations)
Definitions
- the present invention relates to an arrangement for the low-pressure casting of refractory metals, which has a furnace chamber with one or more gas supply and discharge openings and a riser pipe through a cover of the furnace chamber, a melting container arranged in the furnace chamber for the refractory metals and a heating device for heating the
- a melt container with the material to be cast is placed in a pressure-tight furnace chamber, which is closed off by a lid. A runs through the lid
- Casting material the material is usually heated via an inductive heating device which is arranged in the furnace chamber.
- a gas such as nitrogen or argon is introduced into the furnace chamber, which exerts pressure on the melt pool in the melt container. This application of pressure causes the melt to rise slowly through the riser pipe to the casting mold above. The pressurization is maintained until the entire component has solidified. After the gas pressure has been released, the residual melt can flow back from the riser pipe into the melting container. The component is then removed from the mold.
- the fundamental advantage of a low-pressure casting process compared to a classic casting process is, on the one hand, that it is easy to control and slow
- non-ferrous metals such as Aluminum and
- the casting system usually consists of a hollow steel body which has a solid furnace lining (lining) to form a crucible.
- the furnace has various openings that can be used for charging, for melt treatment or for
- the casting molds in particular sand molds, are positioned towards the upper furnace opening, the casting nozzle.
- the melt is inductively heated or kept warm.
- the heating can take place via trough or crucible inductors.
- the entire furnace is supported by a substructure.
- the known low-pressure cast furnaces for steel have a solid furnace lining that is matched to the material to be processed. This means that it is not possible to change the casting material quickly. To change the material, the entire furnace lining would have to be removed and relined.
- Low-pressure steel is known to have a fast
- a ladle filled with the steel that has already melted is inserted into an airtight housing and closed with a lid.
- a pouring ladle basically consists of a steel container that is lined with a ceramic lining.
- a casting mold located above the ladle is placed over a
- the object of the present invention is to provide an arrangement for the low-pressure casting of refractory metals, which one
- the task is according to the arrangement
- the proposed arrangement has a furnace space with one or more gas supply and gas discharge openings and a riser pipe through a cover of the furnace space onto which a casting mold can be placed, a melting container arranged in the furnace space for the
- the arrangement is characterized in that the melting container as
- removable insert is formed in the furnace space for a receptacle mold that also supports the melting container in particular laterally, and that a thermally insulating layer between the receptacle mold and Melting container is formed or integrated in the melting container.
- the furnace chamber is in a known manner
- the melting container as a removable and thus exchangeable insert, it can be exchanged quickly and easily for one
- the design as an insert in a receptacle form that preferably supports the entire circumference of the melting container, ie the bottom surface and side surface (s), enables the necessary mechanical support when processing metals with high density, such as steel.
- the thermally insulating layer significantly reduces temperature differences between the inside and the outside of the melting container or the receptacle, so that thermally induced mechanical stresses that can lead to breakage of the melting container are prevented or at least significantly reduced.
- the receiving opening of the receiving form is geometric
- the one or more induction coils of the heating device can be integrated into the holder.
- the receiving form has an inner formwork for this purpose preferably ceramic material in which one or more induction coils of the heating device for
- Heating of the metallic casting material are embedded.
- the inner formwork is replaced by an outer
- Support structure preferably made of steel, supported.
- the outer walls of the furnace chamber preferably represent this support structure, so that the inner formwork forms a lining for the furnace chamber.
- the receiving mold there is also the possibility of placing the receiving mold as a separate component in an oven chamber.
- the melting container can be used as a top
- a bed of a high-temperature-resistant material for example high alumina, is preferably introduced between the walls of the receiving opening and the melting container, which forms the thermally insulating layer.
- the receiving opening and outer dimensions of the melting container are matched to one another accordingly in order to form a sufficiently large gap for the bed.
- the receiving opening has a conical shape that preferably narrows towards the top.
- the melting container is implemented with a correspondingly complementary conical shape so that the outside of the melting container, after being inserted into the receiving opening, rests over the entire surface on the inside of the receiving opening.
- the melting container is here from below into the after Inserted the receiving opening open at the bottom and pressed into this opening by a suitable mechanism and held there.
- This mechanism can be designed in different ways and for example by means of compression springs or also motorized or
- the furnace chamber has a detachable base plate which has a
- the thermally insulating layer forms the outside of the melting container and is on an internal circuit
- the thermally insulating layer is preferably formed from a ceramic material.
- Layer can for this purpose, for example, by a
- the melting container has an inner shell, preferably made of a ceramic material, an intermediate bed made of a high temperature-resistant material, for example
- Hochtonerde and an outer formwork, preferably also made of a ceramic material.
- This outer formwork can also be formed by several loosely superposed rings and a base plate. This can be done with the aforementioned configurations
- FIG. 1 shows a first example of an arrangement according to the present invention in cross section
- FIG. 2 shows a second example of an arrangement according to the present invention in cross section
- FIG. 3 shows a third example of an arrangement according to the present invention in cross section
- Fig. 4 shows a fourth example of an arrangement of the present invention in
- FIG. 5 shows a fifth example of an arrangement according to the present invention in cross section
- FIG. 6 shows a sixth example of an arrangement according to the present invention in cross section.
- FIG. 7 shows a seventh example of an arrangement according to the present invention in cross section. Ways of Carrying Out the Invention
- Formed receiving form which is arranged in the furnace space or forms a lining of the furnace space.
- the furnace space is formed here by a steel frame 1 which is closed off by a removable cover 5.
- Gas discharge 7 for increasing or decreasing the pressure in the furnace Furthermore, a riser pipe 8 runs through the cover, onto which a casting mold 9 is placed.
- the melt 10 located in the melting container rises via the riser pipe 8 into the casting mold 9 in order to solidify there to form the component to be cast.
- the melting container is formed in this arrangement from an inner crucible 3, which is in a
- the outer crucible 2 which is formed from a refractory material, turns of the induction coil (s) 11 of the heating device are integrated.
- This outer crucible 2 forms in the present example a lining of the steel frame 1 and is with
- Molten metal is in the outer crucible 2 as Recording form used, the cavity between the two crucibles being filled with a refractory fill 4, for example made of high alumina.
- a refractory fill 4 for example made of high alumina.
- the mechanical load when pouring refractory metals, for example steel, is absorbed by the outer steel frame 1.
- Steel frame 1 lies outside the magnetic field of the coils. Furthermore, the thermally insulating effect of the bed 4 results in a more uniform heating of the inner crucible 3 over the wall thickness and thus less thermally induced mechanical
- the furnace chamber is closed with the pressure-tight cover 5, which has a central opening for the
- a melt detection system 18 can be placed between the outer crucible 3 and the bed 4,
- melt detection system 18 can also be used in the further configurations described below.
- Fig. 2 shows another exemplary one
- the melting container is designed in a conical shape and inserted into a receiving mold 2 with a conical receiving opening.
- the furnace space is in turn formed by a steel frame, not shown in this and the following figures, by which the receiving mold 2 is supported.
- Recording form 2 here has a continuous
- the induction coils 11 are in turn integrated, as is indicated in FIG. 2.
- the furnace space is closed off by a cover 5 with gas supply 6, gas discharge 7 and continuous riser pipe 8.
- the melting container is formed from a double-walled construction with an inner crucible 3 and a conical insert 12, between which there is a loose bed 4 made of a refractory material, for example high alumina.
- This porous bulk material causes on the one hand a support of the inner crucible 3 against the
- the bulk material 4 can also be a
- the melting container is removed from the receiving form 2 downwards.
- a removable base plate 13 is provided, on which a spring system 14 is arranged in the present example, which the melting container into the conical
- the base plate 13 is pulled out from under the furnace body and stands free in order to fill the melting container with the melt.
- the base plate 13 with the melting container is then placed under the furnace body again and the latter is lowered onto the base plate.
- the conical insert 12 of the melting container ensures good centering and the spring system 14 enables the conical insert 12 of the melting container to rest against the inner walls of the container over the entire surface
- Thread advance work With this configuration of the arrangement, the melting container or even just the inner crucible 3 of the melting container can be very much exchange easily and quickly to carry out an alloy change.
- the conical insert 12 of the embodiment in FIG. 2 can also consist of a conical tube or individual conical rings 15 and an associated base plate 16, as is shown by way of example in FIG. 3.
- the other components of this exemplary arrangement correspond to those in FIG. 2.
- the conical rings 15 For easier positioning, the conical rings 15
- the configuration compared to the configuration in FIG. 2 lies in the greater flexibility of the melting container with regard to thermal expansion.
- the melting container is only formed from an inner crucible 3 in a conical shape with a high-temperature fleece 17 attached to it, which can be applied to the preferably ceramic inner crucible 3, for example, with a ceramic adhesive.
- the fleece 17 ensures the insulation of the inner crucible 3 with the result of better temperature homogeneity over the
- FIGS. 4 and 5 differ only in that, in the embodiment of FIG. 5, the interior of the crucible 3 has an undercut. This has the advantage that the distance to the lower
- Windings of the induction coil (s) 11 are reduced and thus a better coupling of the electrical energy into the melt 10 can be achieved.
- this embodiment has a uniform
- Fig. 7 shows a further advantageous
- the low-pressure cast furnace has a separate base frame 19 with resistance heating below the steel frame 1, which provides additional preheating of the entire, usually ceramic, structure
- This preheating can reduce heat-related stress cracks in the ceramic crucible.
- the additional resistance heating (s) can also be arranged on the side or side and in the base frame.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019209389.2A DE102019209389A1 (de) | 2019-06-27 | 2019-06-27 | Anordnung für den Niederdruckguss von hochschmelzenden Metallen |
PCT/EP2020/067442 WO2020260245A1 (de) | 2019-06-27 | 2020-06-23 | Anordnung für den niederdruckguss von hochschmelzenden metallen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3990203A1 true EP3990203A1 (de) | 2022-05-04 |
EP3990203B1 EP3990203B1 (de) | 2023-05-10 |
Family
ID=71575344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20739274.7A Active EP3990203B1 (de) | 2019-06-27 | 2020-06-23 | Anordnung für den niederdruckguss von hochschmelzenden metallen |
Country Status (7)
Country | Link |
---|---|
US (1) | US11826820B2 (de) |
EP (1) | EP3990203B1 (de) |
CN (1) | CN114450549B (de) |
DE (1) | DE102019209389A1 (de) |
MX (1) | MX2022000049A (de) |
PL (1) | PL3990203T3 (de) |
WO (1) | WO2020260245A1 (de) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068432B (de) * | 1959-11-05 | |||
US2997756A (en) * | 1956-07-17 | 1961-08-29 | Griffin Wheel Co | Method and apparatus for casting ingots |
US3188703A (en) * | 1962-08-08 | 1965-06-15 | Kelsey Hayes Co | Apparatus for low pressure permanent mold casting |
CH476272A (de) * | 1967-05-12 | 1969-07-31 | Sulzer Ag | Verfahren zur Herstellung einer Auskleidung für Schmelzbehälter und -öfen |
GB1434516A (en) * | 1974-06-05 | 1976-05-05 | Hitchiner Manufacturing Co | Metal casting |
FR2583321B1 (fr) * | 1985-06-18 | 1987-09-18 | Etude Dev Metallurg | Procede de coulee sous basse pression isostatique et machine pour sa mise en oeuvre |
US4791977A (en) * | 1987-05-07 | 1988-12-20 | Metal Casting Technology, Inc. | Countergravity metal casting apparatus and process |
DE4120205A1 (de) * | 1991-06-19 | 1992-12-24 | Saveway Gmbh | Vorwarneinrichtung fuer induktionsschmelzoefen |
DE19613668C1 (de) * | 1996-04-04 | 1997-05-28 | Gustav Ohnsmann | Gießanlage und Verfahren zur Herstellung von Gußstücken |
JPH09303969A (ja) * | 1996-05-15 | 1997-11-28 | Kitashiba Denki Kk | 着脱式るつぼ形誘導溶解炉 |
US5919392A (en) * | 1997-12-17 | 1999-07-06 | Griffin Wheel Company | Pouring tube structure and assembly |
DE19845528A1 (de) * | 1998-04-27 | 1999-10-28 | Junker Gmbh O | Verfahren zum Verarbeiten einer Metallschmelze, insbesondere einer Leichtmetallschmelze, sowie gekapselter und mit Schutzgas beaufschlagbarer Dosierofen |
US6684934B1 (en) | 2000-05-24 | 2004-02-03 | Hitchiner Manufacturing Co., Inc. | Countergravity casting method and apparatus |
GB2443123B (en) * | 2004-02-20 | 2008-06-18 | Hoei Shokai Co Ltd | Container, storing bath and a method of producing the container |
RU2312738C1 (ru) * | 2006-02-09 | 2007-12-20 | Открытое акционерное общество "Новосибирский завод химконцентратов" | Способ литья по выплавляемым моделям с кристаллизацией под давлением и устройство для его осуществления |
CN101862822B (zh) * | 2010-03-12 | 2012-05-02 | 合肥大道模具有限责任公司 | 铝合金花纹块低压浇注设备及低压浇注、重力补缩复合工艺 |
CN201983620U (zh) * | 2010-12-22 | 2011-09-21 | 李碚 | 配备手套操作装置的小型冷坩埚感应熔炼炉 |
CN106925755A (zh) * | 2015-12-29 | 2017-07-07 | 赵群英 | 一种带加压结构的低压铸造整体密封炉 |
-
2019
- 2019-06-27 DE DE102019209389.2A patent/DE102019209389A1/de not_active Ceased
-
2020
- 2020-06-23 US US17/621,501 patent/US11826820B2/en active Active
- 2020-06-23 CN CN202080054566.6A patent/CN114450549B/zh active Active
- 2020-06-23 WO PCT/EP2020/067442 patent/WO2020260245A1/de active Application Filing
- 2020-06-23 EP EP20739274.7A patent/EP3990203B1/de active Active
- 2020-06-23 PL PL20739274.7T patent/PL3990203T3/pl unknown
- 2020-06-23 MX MX2022000049A patent/MX2022000049A/es unknown
Also Published As
Publication number | Publication date |
---|---|
EP3990203B1 (de) | 2023-05-10 |
US11826820B2 (en) | 2023-11-28 |
DE102019209389A1 (de) | 2020-12-31 |
CN114450549A (zh) | 2022-05-06 |
WO2020260245A1 (de) | 2020-12-30 |
US20220347742A1 (en) | 2022-11-03 |
MX2022000049A (es) | 2022-05-20 |
PL3990203T3 (pl) | 2023-08-28 |
CN114450549B (zh) | 2024-05-10 |
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