EP0992306B1 - Vorrichtung zum steigenden Niederdruck-Giessen von Metallschmelzen - Google Patents
Vorrichtung zum steigenden Niederdruck-Giessen von Metallschmelzen Download PDFInfo
- Publication number
- EP0992306B1 EP0992306B1 EP99118748A EP99118748A EP0992306B1 EP 0992306 B1 EP0992306 B1 EP 0992306B1 EP 99118748 A EP99118748 A EP 99118748A EP 99118748 A EP99118748 A EP 99118748A EP 0992306 B1 EP0992306 B1 EP 0992306B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- holding furnace
- pressure
- melt
- casting
- 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.)
- Expired - Lifetime
Links
- 238000005266 casting Methods 0.000 title claims abstract description 44
- 229910001338 liquidmetal Inorganic materials 0.000 title 1
- 239000004576 sand Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000000155 melt Substances 0.000 abstract description 46
- 238000005058 metal casting Methods 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the invention relates to a device for increasing Low-pressure casting of molten metal in intermittently pumped Sand molds with a arranged on the conveyor line Casting station, one arranged at this, the Molten metal containing gas pressure holding furnace with a connectable to the sand molds, rising pouring tube and a means for refilling the holding furnace with molten metal.
- the rising low-pressure casting has become particular in light metals, preferably aluminum, enforced.
- the reason is that light metal melts in air Oxidize very quickly and form unwanted oxide skin which significantly affects the quality of the casting. Therefore closed casting paths must be guaranteed be.
- air contact is inevitable, namely in the mold must be turbulent movements of the Melt be avoided.
- This succeeds in flawless Way only with the rising casting principle, in which the Melt from a gas-holding holding furnace is pressed into the mold.
- This casting principle has in particular advantages even if, as is increasingly the case, Sand molds are used because due to not or little turbulent melt flow dissolving Sand particles in the mold is avoided, which in turn Loss of quality on the finished casting entail would.
- the invention is based on the object, a device to create for the rising low pressure casting
- a high Casting capacity (To / h) allows.
- the means for Refill at least one pressure-tight melt container with a melt supply and a bottom drain and a filling tube arranged in the holding furnace with a has arranged outside of the same closure, that the melt container via its outlet with the filling tube the holding furnace pressure-tight can be coupled and that the Holding furnace with the melt container via a pneumatic Pressure equalization line is connected.
- a refill on the holding furnace attached which contains a melt supply and via a filling tube immersed in the holding furnace Melt delivers to the holding furnace.
- the handover of the Melt from the refill container in the holding furnace is without additional reduction of the gas pressure in the holding furnace possible because this with the refill connected via a pneumatic pressure equalization line which is the gas cushion in the holding furnace and in the Refill container brings into communicating connection.
- the coupling between the Outlet of the melt container and the filling tube of the holding furnace formed pressure-tight.
- the closure of the filling tube is preferably in dependence Controlled by the conveying cycle of the sand molds.
- the control can be done so that after each casting cycle the shutter is opened as long as that for the Fill the sand mold with necessary melt volume becomes. But the refill files can last longer and with each Nach Schollakt then a larger melt volume be transferred to the holding furnace. With this Operation in a pressure balanced state becomes the Filling dynamics when refilling the melt on the metallostatic Pressure difference limited because of the Casting cycle changing gas pressure in the furnace via the pressure equalization line always at the melt level in the refill container is pending, so that the gas pressure in the holding furnace is completely compensated.
- the Melt transferred in a closed system in the oven and can melt continuously and without Overflowing of air.
- the flow velocity in the filling tube can be by known measures reduce the desired level.
- the filling tube ends in the holding furnace near the ground, so that it is not in the holding furnace too turbulent melt movements come in Nach Heilllakt can.
- the Filling tube at the holding furnace gimbaled to the Coupling the bottom outlet of the melt container to the To facilitate holding furnace.
- a preferred variant of the invention is characterized characterized in that the melt container as a transport container formed with a closure at the bottom outlet and after emptying against a full transport container is interchangeable.
- the closures are at the bottom outlet and close the filling tube. Furthermore, the pressure equalization line from the container and then this can uncoupled and through a full melt container be replaced. This will be in the field of closures the filling tube coupled, the pressure equalization line connected and is then ready. The replacement can take place during the ongoing casting operation, so that the sand molds continue in the given Cycle time can be poured.
- the transport container before the Coupling to the filling tube and connecting the pressure compensation line is biased with gas pressure to at Coupling to avoid a pressure drop in the holding furnace and immediately after coupling with refilling to start from the melt container.
- the transport container is in one Caddy arranged by means of which he in recordings can be used at the holding furnace.
- the invention provides that the Melting container as a lock container between the Holding furnace and the stationary melting plant or the stationary melt supply arranged and a dip tube with a head-end closure outside the Melting container is refillable.
- Refilling can be done through an open pot, which is coupled via the closure to the dip tube, so that lock container and holding furnace turn as pressure-tight system can be operated with overpressure.
- lock container becomes depressurized at short notice and after transfer of the melt in the lock container this again pressurized.
- a transport route 1 e.g. in Shape of a roller conveyor indicated on the sand molds 2 by means of pallets 3 from the mold series in the casting station be transported.
- these are box-bound sand molds 2, that is consist of upper box 4 and lower box 5.
- a Pouring table 6 arranged on the sand molds 2 from the Conveyor 1 are deported. Instead, that can Of course, casting also takes place in the conveyor line 1.
- the melt 8th contains and can be raised and lowered, for example by means of a scissor lift 9.
- the scissor lift 9 or the holding furnace 7 on the scissor lift 9 additionally be moved translationally.
- the holding furnace 7 has on its one side Pouring tube 10, which is arranged rising, and in the Melt 8 immersed in the holding furnace 7.
- the riser opens via a closure 11 on the surface of the Casting table 6, where the sand mold 2, namely the lower box 5, is positionable with its sprue.
- melt container 14 fulfills the function of a transport container.
- This transport container contains a Melt supply 15, which run through a bottom outlet 16 can.
- the bottom outlet 16 is provided with a closure 17th equipped by means of which he to a filling tube 18, the immersed in the melt 8 of the holding furnace 7, connectable is.
- the filling tube 18 is gimbal at 19 on Holding furnace 7 stored and also with a controllable Provided closure 20, depending on Delivery cycle in the conveyor line 1 is controllable.
- the pressure-tight melt container 14, namely its Gas pressure pad 21 is connected via a pressure equalization line 22 with the gas pressure cushion 23 of the holding furnace 7th connected.
- the pressure equalization line 22 is in the range their connections to the melt container 14 and the Holding furnace 7 with suitable, controllable closures Mistake. Furthermore, another closure on the ceiling the melt container 14 is arranged.
- FIG. 1 another transport frame 13 'with a Melt container 14 'shown.
- This arrangement is in the same way as the previously described.
- the closure 17 'of the melt container 14' is located in closed position.
- the shutter 11 After positioning the sand mold 2 in the casting position the shutter 11 is opened and penetrates the melt under the pressure of the gas cushion 23 in the holding furnace. 7 through the riser 10 in the sand mold 2, until the Mold cavity is filled. Then the shutter 11 brought into the closed position and the sand mold 2 in the Conveyor 1 reset, on this by one position administrattaktet and the next sand mold in the Casting position brought. At every casting stroke or after one Plurality of castings becomes the seals 17 and 20 turned on and can melt 15 from the transport container 4 over the bottom outlet 16 and the filling pipe 18th be overcrowded in the holding furnace 7. this happens preferably between two casting cycles to the casting process not influenced by the filling dynamics. By the Pressure equalization line 22 ensures that the Gredynamik not by pressure differences in addition being affected. The flow rate of the melt 15 through the bottom outlet 16 and the filling tube 18 can kept low by suitable cross sections and installations become.
- melt container 14 If the melt container 14 emptied, it is closed Closure 17 of the closed closure 20 uncoupled and the pressure equalization line 22 and the corresponding closure 24 is closed on the melt container 14. Then, the melt container 14 by means of of the transport frame 13 removed from the receptacles 12 and exchanged with the melt container 14 '. If he is in position, he will be with his Closure 17 'coupled to the closure 20 of the filling tube 18, then the pressure equalization line 22nd connected and the closure 24 'on the melt container 14 'open. The refilling of the holding furnace 7 is done then in the manner already described.
- Fig. 2 shows a modified embodiment, wherein the same Components are designated by the same reference numerals.
- the melt container 14 is stationary Lock container 25 is formed, the bottom outlet 16 is coupled to the closure 20 of the filling tube 18.
- the pressure-tight lock container 25 is in turn on the Pressure equalization line 22 connected to the holding furnace 7.
- the lock container 25 is a dip tube 26th used, the head and outside the lock container 25 is provided with a closure 27.
- Crucible 28 coupled, consisting of a stationary melt supply is filled. This can be a Forehearth, a treatment furnace or the like act.
- the refilling of the holding furnace 7 is again via the controllable closure 20 and the filling tube 18 in the previously described manner. It is the head-side Closure 27 of the lock container 25 is closed. Between these refill files, the lock container 25 are refilled via the crucible 28. For this purpose, the Pressure in the lock container 25 relieved to the extent that the geodesic height between the crucible 28 and the remaining Melt level in the lock container 25 is sufficient to overflow the melt from the crucible 28 to enable. After this refilling the shutter 27 brought back into the closed position and the pressure compensation via the line 22 between lock container 25 and holding furnace 7 restored.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Die Bonding (AREA)
- Continuous Casting (AREA)
Description
- Fig. 1
- eine schematische Ansicht der Vorrichtung in einer ersten Ausführungsform;
- Fig. 2
- eine der Fig. 1 ähnliche Ansicht einer zweiten Ausführungsform.
Claims (8)
- Vorrichtung zum steigenden Niederdruck-Gießen von Metallschmelzen in taktweise geförderte Sandformen (2) mit einer an der Förderstrecke (1) angeordneten Gießstation (6), einem an dieser angeordneten, die Metallschmelze (8) enthaltenden Gasdruck-Warmhalteofen (7) mit einem an die Sandformen (2) anschließbaren, steigenden Gießrohr (10) und einer Einrichtung zum Nachfüllen des Warmhalteofens mit Metallschmelze, dadurch gekennzeichnet, daß die Einrichtung zum Nachfüllen wenigstens einen druckdichten Schmelzebehälter (14) und ein im Warmhalteofen (7) angeordnetes Füllrohr (18) mit einem außerhalb desselben angeordeten Verschluß (20) aufweist, daß der Schmelzebehälter (14) über seinen Ablauf (16) mit dem Füllrohr (18) des Wamhalteofens (7) druckdicht kuppelbar ist und daß der Warmhalteofen (7) mit dem Schmelzebehälter (14) über eine pneumatische Druckausgleichsleitung (22) verbunden ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Verschluß (20) des Füllrohrs (18) in Abhängigkeit vom Fördertakt der Sandformen (2) steuerbar ist.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Füllrohr (18) im Warmhalteofen (7) bodennah endet.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Füllrohr (18) am Warmhalteofen (7) kardanisch gelagert ist (11).
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Schmelzebehälter (14) als Transportbehälter mit einem Verschluß (17) am Bodenauslauf (16) ausgebildet und nach dem Entleeren gegen einen vollen Transportbehälter (14) auswechselbar ist.
- Vorrichtung nach dem Anspruch 5,dadurch gekennzeichnet, daß der Transportbehälter (14) vor dem Ankuppeln an das Füllrohr (18) und dem Anschließen der Druckausgleichsleitung (22) mit Gasdruck vorgespannt ist.
- Vorrichtung nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, daß der Transportbehälter (14) in einem Transportgestell (13) angeordnet ist, mittels dessen er in Aufnahmen (12) am Warmhalteofen (7) einsetzbar ist.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Schmelzebehälter (14) als Schleusenbehälter (25) zwischen dem Warmhalteofen (7) und einer stationären Schmelzanlage (28) oder einen stationären Schmelzevorrat angeordnet und über ein Tauchrohr mit einem kopfseitigen Verschluß (27) außerhalb des Schleusenbehälters (25) nachfüllbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19845389A DE19845389A1 (de) | 1998-10-02 | 1998-10-02 | Vorrichtung zum steigenden Niederdruck-Gießen von Metallschmelzen |
DE19845389 | 1998-10-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0992306A1 EP0992306A1 (de) | 2000-04-12 |
EP0992306B1 true EP0992306B1 (de) | 2003-11-12 |
Family
ID=7883175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99118748A Expired - Lifetime EP0992306B1 (de) | 1998-10-02 | 1999-09-23 | Vorrichtung zum steigenden Niederdruck-Giessen von Metallschmelzen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6460604B1 (de) |
EP (1) | EP0992306B1 (de) |
JP (1) | JP2000107851A (de) |
AT (1) | ATE253995T1 (de) |
DE (2) | DE19845389A1 (de) |
ES (1) | ES2207097T3 (de) |
PT (1) | PT992306E (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106001502A (zh) * | 2016-07-07 | 2016-10-12 | 上海华培动力科技有限公司 | 一种平顶式低压铸造机 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10033625A1 (de) * | 2000-07-11 | 2002-01-31 | Vaw Ver Aluminium Werke Ag | Verfahren und Vorrichtung zum steigenden Gießen mit einer Kokille / einem Kernpaket mit offener Eingußöffnung |
DE102004040147A1 (de) * | 2004-08-19 | 2006-02-23 | Rautenbach-Guß Wernigerode GmbH | Vorrichtung und Verfahren zum Niederdruck-Gießen in steigender Gießweise von Metallen, insbesondere Leichtmetallen |
AT511300B1 (de) | 2011-02-09 | 2019-03-15 | Fill Gmbh | Giessverfahren sowie giessanlage zur herstellung von werkstücken |
CN107042296A (zh) * | 2017-06-13 | 2017-08-15 | 江苏天宏机械工业有限公司 | 一种采用剪刀撑升降的两室保温炉 |
CN109773154B (zh) * | 2019-03-29 | 2023-11-03 | 中信戴卡股份有限公司 | 压铸机跑液检测装置 |
CN110918940B (zh) * | 2019-12-18 | 2021-12-31 | 内蒙古工业大学 | 一种大型有色金属薄壁结构件的铸造装置及铸造方法 |
CN111182752B (zh) * | 2019-12-30 | 2021-04-13 | 贵州新蓝辉金属制品有限公司 | 一种磁悬浮列车用散热器机箱及其铸造方法 |
IT202100031076A1 (it) * | 2021-12-10 | 2023-06-10 | Paolo Zolesi | Metodo per fabbricare un pezzo in lega leggera tramite una colata di lega leggera fusa a bassa pressione e apparecchiatura per eseguire tale metodo |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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FR902463A (fr) * | 1943-04-01 | 1945-08-31 | Mahle Werk Gmbh | Machine pour la coulée par injection actionnée par un gaz comprimé avec chambre de refoulement placée extérieurement au creuset de fusion |
FR2293275A1 (fr) * | 1974-12-06 | 1976-07-02 | Pechiney Aluminium | Dispositif pour l'alimentation automatique continue en metal liquide des fours equipant les machines a mouler les metaux et alliages |
US4153100A (en) * | 1975-10-27 | 1979-05-08 | Institut Po Metaloznanie I Technologia Na Metalite | Low-pressure or counterpressure casting apparatus |
BG22157A1 (de) * | 1975-10-27 | 1977-05-20 | ||
SE455577B (sv) * | 1980-06-30 | 1988-07-25 | Leybold Ag | Anleggning for framstellning av metallpulver innefattande ett mellankerl |
DE3024709A1 (de) * | 1980-06-30 | 1982-01-28 | Leybold-Heraeus GmbH, 5000 Köln | Transportbehaelter fuer metallschmelzen |
DE8230594U1 (de) * | 1982-10-30 | 1983-03-17 | Krupp Stahl Ag, 4630 Bochum | Transportable pfanne zur aufnahme und metallurgischen behandlung fluessigen metalls |
DE3317474A1 (de) * | 1983-05-13 | 1984-11-15 | Russ-Elektroofen Produktions-Gesellschaft mbH & Co KG, 5000 Köln | Niederdruckgiessverfahren und vorrichtung zu seiner durchfuehrung |
US5271539A (en) * | 1986-06-09 | 1993-12-21 | Kawasaki Steel Corporation | Pressure type automatic pouring furnace for casting |
DE4116998A1 (de) * | 1991-05-24 | 1992-11-26 | Ats Beteiligungs Gmbh | Verfahren zum giessen von leichtmetallteilen aus magnesium sowie giessanlage zur durchfuehrung des verfahrens |
DE4139743A1 (de) * | 1991-12-03 | 1993-06-09 | Blacha, Jerzy Marcisz Von, Dipl.-Ing. | Dosiervorrichtung fuer nichteisen-metallschmelzen |
DE4203193C2 (de) * | 1992-02-05 | 1999-09-30 | Inst Werkstoffkunde Uni Hannov | Verfahren und Vorrichtung zur Handhabung von Magnesium- und Magnesium-Legierungsschmelzen |
JP3117163B2 (ja) * | 1992-06-10 | 2000-12-11 | 東洋機械金属株式会社 | ダイカストマシン |
DE4403285A1 (de) * | 1994-01-31 | 1995-08-03 | Alexander Fischer | Dosierofen |
JP3354277B2 (ja) * | 1994-03-23 | 2002-12-09 | マツダ株式会社 | 低圧鋳造装置 |
US5948352A (en) * | 1996-12-05 | 1999-09-07 | General Motors Corporation | Two-chamber furnace for countergravity casting |
DE19720057A1 (de) * | 1997-05-14 | 1998-11-19 | Wagner Heinrich Sinto Masch | Verfahren und Vorrichtung zum steigenden Gießen in Sand-Gießformen |
-
1998
- 1998-10-02 DE DE19845389A patent/DE19845389A1/de not_active Withdrawn
-
1999
- 1999-09-23 ES ES99118748T patent/ES2207097T3/es not_active Expired - Lifetime
- 1999-09-23 DE DE59907701T patent/DE59907701D1/de not_active Expired - Lifetime
- 1999-09-23 EP EP99118748A patent/EP0992306B1/de not_active Expired - Lifetime
- 1999-09-23 AT AT99118748T patent/ATE253995T1/de not_active IP Right Cessation
- 1999-09-23 PT PT99118748T patent/PT992306E/pt unknown
- 1999-10-01 JP JP11281223A patent/JP2000107851A/ja active Pending
- 1999-10-04 US US09/410,630 patent/US6460604B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106001502A (zh) * | 2016-07-07 | 2016-10-12 | 上海华培动力科技有限公司 | 一种平顶式低压铸造机 |
Also Published As
Publication number | Publication date |
---|---|
EP0992306A1 (de) | 2000-04-12 |
ES2207097T3 (es) | 2004-05-16 |
US6460604B1 (en) | 2002-10-08 |
JP2000107851A (ja) | 2000-04-18 |
PT992306E (pt) | 2004-03-31 |
DE59907701D1 (de) | 2003-12-18 |
DE19845389A1 (de) | 2000-04-06 |
ATE253995T1 (de) | 2003-11-15 |
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