EP0817691B1 - Verfahren und vorrichtung zum beschicken von giessmaschinen mit metallschmelze - Google Patents
Verfahren und vorrichtung zum beschicken von giessmaschinen mit metallschmelze Download PDFInfo
- Publication number
- EP0817691B1 EP0817691B1 EP96905584A EP96905584A EP0817691B1 EP 0817691 B1 EP0817691 B1 EP 0817691B1 EP 96905584 A EP96905584 A EP 96905584A EP 96905584 A EP96905584 A EP 96905584A EP 0817691 B1 EP0817691 B1 EP 0817691B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- melt
- gas
- extraction chamber
- chamber
- aperture
- 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
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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
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/02—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
-
- 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
Definitions
- the invention relates to a method for loading of casting machines with non-ferrous metal melts, according to the Melt from a removal chamber having a gas atmosphere of a melting furnace in batches of the filling opening is fed to a casting machine, and on a device to perform this procedure.
- the invention is therefore based on the object of a method of the type described at the beginning, which is a rational Melt loading with high dosing accuracy and consistency allowed.
- a device that is comparatively inexpensive should be used be created to carry out the process.
- the invention solves this problem in that the melt within the removal chamber is pumped up and metered over outlet pipe leading through the furnace wall to the filling opening is drained, in support of the melt flow a pulsed gas application of the Removal chamber takes place.
- This is the melt flow path at least partially integrated in the furnace chamber of the extraction chamber and the melt is discharged to comparatively short distances by simply draining along the outlet pipe, so that low-cost pumping devices and heating devices are sufficient for a perfect melt discharge. Doing so due to the impulse gassing of the removal chamber the dosing accuracy improved in the desired sense, since the gas impulses that complete and clearly limited leakage of the melt through secure the outlet pipe and also when in use of protective gas in the outlet area a protective atmosphere for the Melt can result.
- the removal chamber could even be used for aluminum or the like with air or the like, but the removal chamber with oxygen-free protective gas, preferably a mixture nitrogen or argon and sulfur hexafluoride, can cause melt oxidation in the discharge area and safe with sensitive metals such as magnesium or the like be prevented. Since it is the metered melt discharge is a turbulent melt flow that is not the entire outlet pipe cross-section, and the melt surface continuously torn open and newly formed, can does not become a sealing as in conventional melt baths Form protective layer so that on an oxygen-free protective gas atmosphere special attention is to be paid to the usual protective gas compositions, that from gas mixtures with air and carbon dioxide or the like. Are unsuitable.
- oxygen-free protective gas preferably a mixture nitrogen or argon and sulfur hexafluoride
- Multi-chamber furnace used which is a gas-fillable removal chamber with a melt conveyor.
- a rational one Melt discharge is achieved in that the Melt conveyor from an outside sealed Dosing pump, preferably a screw pump, with above the spout arranged spout and from a sloping, leading through the furnace side wall to the outside
- Dosing pump preferably a screw pump
- a simple and robust metering pump can be used to feed the melt without any problems achieve, preferably as a metering pump a worm pump according to AT-B-399.205 can be used can.
- This screw pump delivers with high dosing accuracy Melt in the outlet pipe, through which this with the help the one blown into the removal chamber via the inflow nozzles Gases flows freely as a gas piston and on the shortest Way to the filling opening of the casting machine, so that Difficulties due to slag formation and temperature fluctuations in the melt with little construction and maintenance and user-friendly way prevented will.
- the outlet opening of the outlet pipe is expediently provided with provided a closure, with which a greater gas consumption avoided by escaping gas between dosing processes can be.
- outlet pipe is outside the extraction chamber with a Heating device equipped, can be easily the discharge conditions for the melt over the entire length of the discharge pipe keep the same, with which the functional safety and Dosing accuracy can be increased.
- a gas preheater can be assigned and / or upstream, with what the gas temperature is adaptable to the melt temperature.
- a melting furnace 1 consists of an insulating housing 2 with suitable heaters 3 and an oven insert 4.
- the Furnace insert 4 forms one or more melt storage or Cleaning chambers 5 and a removal chamber 6, the Melting chamber 5 with a material feed device 7 and the removal chamber 6 with a melt conveyor 8 are equipped.
- the chambers 5, 6 are covered 9 sealed gastight and via gas lines 10 and inlet nozzles 11 can be charged with gas.
- the melt conveyor 8 comprises an externally sealed Dosing pump 12 with above the melt level SP spout 13 arranged inside the removal chamber 6 and an inclined, through the furnace side wall 14 after outside leading outlet pipe 15, which is in the removal chamber 6 in the pouring area of the metering pump 12 inlet opening 16 and a drain opening 17 in the filling area of a filling opening 18 for a casting machine not shown having.
- the outlet pipe 15 has its own heating device 19 temperature controlled and can be at its drain opening 17 have an automatic shutter 20.
- Melt is used for charging the filling opening 18 in batches S dosed from the removal chamber 6 by the metering pump 12 pumped up and through the inflow opening 16 into the drain pipe 15 poured through which it freely outwards into the filling opening 18 flows off.
- the removal chamber 6 impulsed with gas, for gas preheating a gas preheating device 21 to the inflow nozzles 11 can be assigned.
- This gas acts like a gas piston the melt in the drain pipe 15, which accelerates the melt flow and clearly limited without dripping, being an oxygen-free Shielding gas also prevents melt oxidation.
- the protective gas flowing out of the discharge opening 17 also exercises its protective effect also in the area of the filling opening 18 from what improves the melt loading.
- the closure 20 is closed after each melt discharge to avoid unnecessary Avoid using protective gas.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Details (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Multi-Process Working Machines And Systems (AREA)
- Furnace Charging Or Discharging (AREA)
Description
Claims (7)
- Verfahren zum Beschicken von Gießmaschinen mit Nichteisenmetallschmelzen, nach dem Schmelze (S) aus einer eine Gasatmosphäre aufweisenden Entnahmekammer (6) eines Schmelzenofens (1) chargenweise der Befüllöffnung (18) einer Gießmaschine zugefördert wird, dadurch gekennzeichnet, daß die Schmelze innerhalb der Entnahmekammer dosiert hochgepumpt und über ein durch die Ofenwandung hindurchführendes Auslaufrohr zur Befüllöffnung abfließen gelassen wird, wobei zur Unterstützung des Schmelzenflusses eine impulsartige Gasbeaufschlagung der Entnahmekammer erfolgt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Entnahmekammer mit sauerstofffreiem Schutzgas, vorzugsweise einem Gemisch aus Stickstoff oder Argon und Schwefelhexafluorid, beaufschlagt wird.
- Vorrichtung zum Durchführung des Verfahrens nach Anspruch 1 oder 2, mit einem eine Entnahmekammer bildenden Schmelzenofen, dessen abdeckbare und schutzgasbefüllbare Entnahmekammer eine Schmelzenfördereinrichtung aufnimmt, dadurch gekennzeichnet, daß die Schmelzenfördereinrichtung (8) aus einer nach außen abgedichteten Dosierpumpe (12), mit oberhalb des Schmelzenspiegels (SP) angeordnetem Ausguß (13) sowie aus einem schräggeneigten, durch die Ofenseitenwandung (14) nach außen führenden Auslaufrohr (15) besteht, das eine im Ausgußbereich der Dosierpumpe (12) liegende Zuflußöffnung (16) und eine auf die Befüllöffnung (18) der Gießmaschine ausgerichtete Abflußöffnung (17) aufweist, und daß in die Entnahmekammer (6) Einströmdüsen (11) zur impulsartigen Gasbeaufschlagung münden.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Abflußöffnung (17) des Auslaufrohres (15) mit einem Verschluß (20) versehen ist.
- Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß das Auslaufrohr (15) außerhalb der Entnahmekammer (6) mit einer Heizeinrichtung (19) ausgestattet ist.
- Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß den Einströmdüsen (11) eine Gasvorwärmeinrichtung (21) zu- und/oder vorgeordnet ist.
- Vorrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die Dosierpumpe (12) als Schneckenpumpe ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT529/95 | 1995-03-24 | ||
AT0052995A AT404328B (de) | 1995-03-24 | 1995-03-24 | Verfahren und vorrichtung zum beschicken von giessmaschinen |
PCT/AT1996/000054 WO1996030142A1 (de) | 1995-03-24 | 1996-03-21 | Verfahren und vorrichtung zum beschicken von giessmaschinen mit metallschmelze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0817691A1 EP0817691A1 (de) | 1998-01-14 |
EP0817691B1 true EP0817691B1 (de) | 1998-09-23 |
Family
ID=3493039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96905584A Expired - Lifetime EP0817691B1 (de) | 1995-03-24 | 1996-03-21 | Verfahren und vorrichtung zum beschicken von giessmaschinen mit metallschmelze |
Country Status (8)
Country | Link |
---|---|
US (1) | US5908066A (de) |
EP (1) | EP0817691B1 (de) |
JP (1) | JP3723903B2 (de) |
AT (2) | AT404328B (de) |
DE (1) | DE59600604D1 (de) |
ES (1) | ES2121638T3 (de) |
NO (1) | NO319936B1 (de) |
WO (1) | WO1996030142A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1795283A1 (de) | 2005-12-06 | 2007-06-13 | Meltec Industrieofenbau GmbH | Vorrichtung zum Beschicken einer Gießeinrichtung mit einer Gießschmelze |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6223158B1 (en) | 1998-02-04 | 2001-04-24 | At&T Corporation | Statistical option generator for alpha-numeric pre-database speech recognition correction |
DE10121209B4 (de) * | 2001-04-30 | 2004-02-05 | Müller Weingarten AG | Dosier- oder Chargieranlage |
US6926066B2 (en) * | 2002-11-13 | 2005-08-09 | Alain Renaud Boulet | Magnesium die casting system |
US6973955B2 (en) * | 2003-12-11 | 2005-12-13 | Novelis Inc. | Heated trough for molten metal |
DE112005000045B4 (de) * | 2004-07-22 | 2008-08-21 | Hoei Shokai Co., Ltd., Toyota | System zur Beförderung von geschmolzenem Metall, Behälter sowie Fahrzeug |
JP4602153B2 (ja) * | 2005-05-13 | 2010-12-22 | 株式会社豊栄商会 | 溶融金属供給容器および溶融金属供給方法 |
JP2006035238A (ja) * | 2004-07-22 | 2006-02-09 | Hoei Shokai:Kk | 溶融金属供給システム、容器及び車両 |
CA2673272A1 (en) * | 2006-12-19 | 2008-06-26 | Novelis Inc. | Method of and apparatus for conveying molten metals while providing heat thereto |
US8757202B2 (en) | 2009-06-29 | 2014-06-24 | David Deng | Dual fuel heating source |
US9829195B2 (en) | 2009-12-14 | 2017-11-28 | David Deng | Dual fuel heating source with nozzle |
CN103668327B (zh) * | 2013-10-31 | 2016-08-17 | 贵州顺安机电设备有限公司 | 吸铝管带开闭装置的出铝抬包 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1150182B (de) * | 1957-12-11 | 1963-06-12 | Karl Goehring Dipl Ing | Kontaktgesteuerte Fuellvorrichtung fuer Warmkammerdruckgiessmaschinen |
DE1134183B (de) * | 1960-07-20 | 1962-08-02 | Buehler Ag Geb | Beschickungsvorrichtung fuer Giessmaschinen |
DE2111462A1 (de) * | 1971-03-10 | 1972-09-14 | Gerhard Schuster | Vorrichtung zum dosierten Zufuehren von fluessigem Metall fuer eine Giessmaschine,insbesondere Kaltkammerdruckgiessmaschine |
AT323922B (de) * | 1971-07-05 | 1975-08-11 | Elin Union Ag | Enrichtung zur förderung gleicher volumina schmelzflüssigen metalles für die speisung von giesseinrichtung |
DE2307846B2 (de) * | 1973-02-17 | 1976-08-19 | Brown, Boveri & Cie Ag, 6800 Mannheim | Verfahren und anordnung zum selbsttaetigen entnehmen von schmelzfluessigem metall |
DE3050183C2 (de) * | 1980-03-28 | 1983-09-15 | Norsk Hydro Magnesiumgesellschaft mbH, 4300 Essen | Dosiereinrichtung zum Fördern von flüssigem Metall |
JPS59212150A (ja) * | 1983-05-17 | 1984-12-01 | Mitsubishi Heavy Ind Ltd | 連続鋳造における注湯方法 |
DE3344537C1 (de) * | 1983-12-09 | 1985-06-05 | Daimler-Benz Ag, 7000 Stuttgart | Verfahren zum taktweisen Dosieren einer flüssigen Metallmenge beim Druckgießen |
US4635706A (en) * | 1985-06-06 | 1987-01-13 | The Dow Chemical Company | Molten metal handling system |
JPS62289363A (ja) * | 1986-06-09 | 1987-12-16 | Kawasaki Steel Corp | 加圧式注湯炉 |
DE4029386C2 (de) * | 1990-09-12 | 1993-12-16 | Strikfeldt & Koch | Verfahren und Vorrichtung zum Dosieren von Flüssigkeiten, insbesondere von geschmolzenem Metall |
US5407000A (en) * | 1992-02-13 | 1995-04-18 | The Dow Chemical Company | Method and apparatus for handling molten metals |
CA2086879A1 (en) * | 1993-01-07 | 1994-07-08 | Henry Meyer | Process and apparatus for delivering a metered shot |
AT401302B (de) * | 1993-01-26 | 1996-08-26 | Rauch Fertigungstech Gmbh | Zweikammerofen zur schmelzenbeschickung von gussmaschinen |
AT399205B (de) * | 1993-01-26 | 1995-04-25 | Rauch Fertigungstech Gmbh | Schneckenpumpe zum fördern von metallschmelzen |
-
1995
- 1995-03-24 AT AT0052995A patent/AT404328B/de not_active IP Right Cessation
-
1996
- 1996-03-21 AT AT96905584T patent/ATE171406T1/de active
- 1996-03-21 DE DE59600604T patent/DE59600604D1/de not_active Expired - Lifetime
- 1996-03-21 ES ES96905584T patent/ES2121638T3/es not_active Expired - Lifetime
- 1996-03-21 JP JP52869596A patent/JP3723903B2/ja not_active Expired - Lifetime
- 1996-03-21 US US08/913,663 patent/US5908066A/en not_active Expired - Lifetime
- 1996-03-21 EP EP96905584A patent/EP0817691B1/de not_active Expired - Lifetime
- 1996-03-21 WO PCT/AT1996/000054 patent/WO1996030142A1/de active IP Right Grant
-
1997
- 1997-09-23 NO NO19974401A patent/NO319936B1/no unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1795283A1 (de) | 2005-12-06 | 2007-06-13 | Meltec Industrieofenbau GmbH | Vorrichtung zum Beschicken einer Gießeinrichtung mit einer Gießschmelze |
Also Published As
Publication number | Publication date |
---|---|
DE59600604D1 (de) | 1998-10-29 |
WO1996030142A1 (de) | 1996-10-03 |
US5908066A (en) | 1999-06-01 |
EP0817691A1 (de) | 1998-01-14 |
NO319936B1 (no) | 2005-10-03 |
NO974401D0 (no) | 1997-09-23 |
ATE171406T1 (de) | 1998-10-15 |
ATA52995A (de) | 1998-03-15 |
NO974401L (no) | 1997-09-23 |
AT404328B (de) | 1998-10-27 |
ES2121638T3 (es) | 1998-12-01 |
JPH11505475A (ja) | 1999-05-21 |
JP3723903B2 (ja) | 2005-12-07 |
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