EP1610917A1 - Warmhalteofen und dosiervorrichtung für metallschmelzen - Google Patents
Warmhalteofen und dosiervorrichtung für metallschmelzenInfo
- Publication number
- EP1610917A1 EP1610917A1 EP04720565A EP04720565A EP1610917A1 EP 1610917 A1 EP1610917 A1 EP 1610917A1 EP 04720565 A EP04720565 A EP 04720565A EP 04720565 A EP04720565 A EP 04720565A EP 1610917 A1 EP1610917 A1 EP 1610917A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding furnace
- furnace according
- molten metal
- metering chamber
- 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
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
- 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
- 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
- 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
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
-
- 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
- F27B17/00—Furnaces of a kind not covered by any preceding group
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
- F27D3/145—Runners therefor
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
Definitions
- the invention relates to a holding furnace with a metering device for molten metal, in particular for metering light metal melt during die casting.
- DE-OS 2022989 describes an automatic dosing system for liquid metals with which metal melts should be able to be dosed precisely.
- the automatic dosing is part of a holding oven that is fed with molten metal via a loading flap.
- the melt to be dosed is discharged through a discharge tube which is provided with two measuring electrodes. If melt is to be dosed, the furnace is pressurized with compressed air and the melt rises in the discharge tube until it reaches the measuring electrodes and a pulse is thus given to a control system.
- the set amount of molten metal flows out of the discharge pipe.
- the furnace is then vented using a timer and the outflow of molten metal is suddenly prevented.
- the accuracy is not sufficient for today's conditions and the formation of slags is disadvantageous.
- Another device for pouring molten metal according to DE-A-19821650 is known, which has a dosing container which is connected in flow connection to the melting space of a holding furnace via a closable opening.
- the dosing container can be emptied by means of pressurized gas through a riser pipe, the opening being arranged in the bottom of the dosing container and being closable from the inside on a valve rod by means of a valve body.
- the opening is hemispherical or conical.
- the valve rod and valve body are arranged inside the dosing container.
- the level in the dosing tank is determined by means of a level sensor in the dosing tank.
- the bottom valve is opened by lowering and turning the valve. til body closed.
- the melt leaves the dosing tank through the riser pipe by means of a defined gas pressure. Backflow in the riser pipe is possible when the dosing tank is refilled. This can cause unwanted oxides to accumulate in the riser.
- DK 199800409 A similar solution is shown in DK 199800409, where the holding oven is arranged to be height adjustable. The height is adjusted using a scissor lift.
- DE-A-10034946 discloses a piston pump, the valve unit of which is used in combination as an inlet and outlet valve. Such a valve is geometrically trapped and therefore cannot be dismantled without extensive cleaning of the piston pump.
- the invention is based on the object of creating a holding furnace with a metering device for molten metal, in which, while avoiding the disadvantages of the prior art, a precise metering of molten metal, in particular aluminum melt, is possible.
- the issue is solved on the basis of the features of the patent claim.
- This outlet valve not only prevents the backflow of melt from the riser pipe, but also increases the dosing accuracy, since there are no inconsistent flow obstacles that disrupt the pneumatic dosing.
- the melt level in the riser pipe can be kept high up close to the outlet. Oxides can only contaminate the riser pipe and the outlet valve to a small extent.
- a rotatable and tiltable dosing chamber holder enables the delivery pipe, which is permanently connected to the dosing chamber, to adapt much better to the geometric conditions of the casting chamber to be filled, for example a die casting machine.
- the dosing unit can be decoupled from the casting chamber, which is exposed to strong vibrations, by means of a small tilting movement.
- a docking device has a positioning aid in the form of a ceramic bushing, in particular made of a fiber-reinforced ceramic material. This ceramic bushing fits into an opening in the casting chamber, so that precise dosing from below is possible.
- the docking is still stored in a cap of the delivery pipe, which also contains a sealing element.
- This arrangement enables both angle compensation and the compensation of an axis offset of up to approx. ⁇ 2 mm.
- the opening is designed as a socket that is received in a socket made of gray cast iron.
- the conveyor pipe is provided with a heater and a foamed insulation.
- a ceramic sealing ring is arranged between the conveyor pipe and the holding furnace, which is still surrounded by a steel ring, which ensures rapid dissipation of the thermal energy at the transition.
- the durability is increased and handling is simplified.
- Fig. 1 a holding furnace in a sectional view
- Fig. 3 a turning and tilting device in a plan view
- Fig. 4 a turning and tilting device in a side view
- Fig. 5 a detailed view of the conveyor pipe.
- a holding furnace 1 for, for example, aluminum melt consists in the usual way of a force-absorbing steel trough 2 with heat-resistant insulation 3. The heating is carried out by means of a ceiling, immersion or floor heating which is not explicitly shown.
- the holding furnace 1 is filled to a minimum fill level 4 with molten aluminum.
- the molten metal is supplied via a tube 5, which tightly closes a fill opening of the steel trough 2 and the lower end of which is constantly below the fill level 4, as a result of which the formation of oxides and the introduction of gas during Filling is greatly reduced.
- a funnel 7 is placed on the tube 5 and the molten metal passes from the funnel 6 via a filter 7 into the tube 5.
- a metering chamber 8 In a further opening of the steel trough 2, a metering chamber 8 is arranged, in which there is a metering device for the amount of molten metal to be metered per casting process.
- the metering device contains an outlet valve with a valve rod 11 and a valve seat 12.
- the valve seat 12 establishes the connection to a riser pipe 20.
- the valve rod 11 is held at the upper end in a gastight and heat-resistant bellows 18 and guided and driven by means of pneumatic cylinders 17.
- An analog gas-tight drive unit for the active actuation of two scanning electrodes 16 and 16 can be located parallel to this valve drive unit.
- molten metal is sucked pneumatically into the dosing chamber 8 via a bottom valve (passive inlet valve 13) and / or an overflow 14.
- a bottom valve passive inlet valve 13
- an overflow 14 or an active or passive bottom valve 13 prevents or limits the backflow of the molten metal from the metering chamber 8 into the holding furnace 1.
- molten metal can be conveyed pneumatically to the casting machine via the riser pipe 20.
- the valve rod 11 closes the valve seat 12 and thereby ends the metering process exactly. Any backflow of molten metal from the riser pipe 20 into the metering chamber 8 is reliably prevented.
- the melt level (melt surface 15) can be kept slightly overflowing, which can increase the metering accuracy.
- the riser pipe 20 can be connected to the casting chamber 24 via a delivery pipe 21 with an outlet beak 22 or a docking 23. Only due to the procedure described is the outlet valve and the delivery pipe 21 influenced only minimally by oxides / slags, which ensures a reliable melt transfer.
- the docking 23 has an angle-independent and laterally displaceable positioning aid in the form of a spherical cap 44.
- a ceramic bushing 41 is used as insulation, which enables precise metering from below by avoiding solidification.
- a sealing element 45 is installed between the conveyor pipe 21 and the spherical cap 44. This arrangement enables both angle compensation and the compensation of an axis offset of up to approx. ⁇ 2 mm.
- the opening 43 of the casting chamber 24 is designed as an exchangeable bush 42 (welding bush). It is manufactured in gray cast iron, which enables inexpensive spare parts with good melt resistance.
- the conveyor pipe 21 is provided with a heater 52 and a foamed insulation 51.
- a ceramic sealing ring 53 is arranged between the conveying pipe 21 and the holding furnace 1, which is still surrounded by a steel ring 54, which ensures rapid dissipation of the thermal energy at the transition.
- the leaking molten metal solidifies in the event of a leak, which ensures good durability of the connection and simplifies handling.
- the metering device including the conveying tube 21 is inserted into the holding furnace 1 so that it can be rotated and tilted.
- a rotating arm 30 in which a tilting ring 31 with a built-in metering chamber 8 is used serves as a rotating and tilting device.
- the conveyor pipe support 32 is rigidly connected to this tilting ring 31. Forces which act on the conveyor tube 21 are converted as quickly as possible into a movement of the rotating and tilting device, which reduces the load on the conveyor tube 21 and thereby increases the durability.
- the holding furnace 1 can be arranged on a lifting device in the form of a scissor lift. Since the actuating cylinders for the scissor jack can be arranged laterally on the outside of the steel trough 2, the minimum overall height of the scissor jack can be kept low.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10316758A DE10316758A1 (de) | 2003-04-10 | 2003-04-10 | Warmhalteofen und Dosiervorrichtung für Metallschmelzen |
PCT/CH2004/000148 WO2004089562A1 (de) | 2003-04-10 | 2004-03-15 | Warmhalteofen und dosiervorrichtung für metallschmelzen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1610917A1 true EP1610917A1 (de) | 2006-01-04 |
EP1610917B1 EP1610917B1 (de) | 2008-06-18 |
Family
ID=33039047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04720565A Expired - Lifetime EP1610917B1 (de) | 2003-04-10 | 2004-03-15 | Warmhalteofen und dosiervorrichtung für metallschmelzen |
Country Status (6)
Country | Link |
---|---|
US (1) | US7445748B2 (de) |
EP (1) | EP1610917B1 (de) |
AT (1) | ATE398501T1 (de) |
DE (2) | DE10316758A1 (de) |
ES (1) | ES2305752T3 (de) |
WO (1) | WO2004089562A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006057179A1 (ja) * | 2004-11-25 | 2006-06-01 | Tounetsu Co., Ltd. | 溶湯定量供給用保持炉 |
EP2164655A2 (de) | 2007-07-06 | 2010-03-24 | C3 Casting Competence Center GMBH | Verfahren zum schmelzen und warmhalten von metallschmelze und schmelz- und warmhalteofen für metallschmelzen |
CN101598500B (zh) * | 2009-06-30 | 2011-04-06 | 莱芜钢铁集团有限公司 | 一种连续炼钢炉无渣出钢口 |
CN103249860B (zh) * | 2010-12-13 | 2016-03-16 | Posco公司 | 连续涂布设备 |
CN106370013A (zh) * | 2016-11-17 | 2017-02-01 | 江苏天宏机械工业有限公司 | 一种双室铝液保温炉专用堵头机构 |
CN117663713A (zh) * | 2024-02-01 | 2024-03-08 | 嘉庚(江苏)特材有限责任公司 | 一种用于电炉部件的加工成型装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1796183A1 (de) * | 1968-09-17 | 1972-02-17 | Siemens Ag | Glas zur Herstellung von Glaskoerpern im Schleuderverfahren |
US3708088A (en) * | 1970-11-20 | 1973-01-02 | Albany Int Corp | Apparatus for metering liquid flow discharge |
US3708599A (en) * | 1971-04-22 | 1973-01-02 | Thermal Transfer Corp | High temperature apparatus |
US3702066A (en) * | 1971-07-22 | 1972-11-07 | Gen Motors Corp | Automatic expansion valve, in line, piloted |
US4189697A (en) * | 1977-09-09 | 1980-02-19 | Nifco Inc. | Thermal cut-off fuse |
JPS63119966A (ja) | 1986-11-10 | 1988-05-24 | Toshiba Mach Co Ltd | 加圧式溶湯保温炉における溶湯供給系内溶湯の急速排湯方法 |
SU1435394A1 (ru) | 1987-04-01 | 1988-11-07 | Киевский институт автоматики им.ХХУ съезда КПСС | Устройство дл дозировани жидкого металла |
JP3518227B2 (ja) | 1997-02-18 | 2004-04-12 | 宇部興産株式会社 | 低融点合金鋳造方法 |
DE19733137A1 (de) * | 1997-07-31 | 1999-02-04 | Fev Motorentech Gmbh & Co Kg | Verfahren zur Steuerung von elektromagnetischen Aktuatoren zur Betätigung von Gaswechselventilen an Kolbenbrennkraftmaschinen |
DK9700348U3 (da) | 1997-09-23 | 1997-12-29 | Greenfire Aps | Stokerbrændeovn til træpiller |
JP4095157B2 (ja) * | 1998-03-11 | 2008-06-04 | 株式会社トウネツ | 金属溶湯供給装置の湯面調整出湯方法 |
DE19821650A1 (de) | 1998-05-14 | 1999-11-25 | Striko Westofen Gmbh | Vorrichtung zum Vergießen von Metallschmelze |
GB9813826D0 (en) | 1998-06-27 | 1998-08-26 | Campbell John | Dispensing apparatus and method |
US6426037B1 (en) * | 1999-05-06 | 2002-07-30 | John B. Fieber | Dosing chamber method and apparatus |
DE29913027U1 (de) | 1999-07-28 | 2000-12-07 | Maucher Eberhard | Schmelzensteigrohr für flüssiges Metall |
JP2001239357A (ja) | 2000-02-29 | 2001-09-04 | Aisin Seiki Co Ltd | 給湯装置 |
CN1277639C (zh) | 2001-06-06 | 2006-10-04 | 株式会社久保田 | 金属熔液的供给装置 |
JP3581341B2 (ja) | 2001-10-11 | 2004-10-27 | 有限会社太田製作所 | 金属溶湯の定量供給法及び金属溶湯供給ポンプ |
GB0315791D0 (en) * | 2003-07-07 | 2003-08-13 | 3M Innovative Properties Co | Two component molded valve stems |
-
2003
- 2003-04-10 DE DE10316758A patent/DE10316758A1/de not_active Withdrawn
-
2004
- 2004-03-15 WO PCT/CH2004/000148 patent/WO2004089562A1/de active IP Right Grant
- 2004-03-15 ES ES04720565T patent/ES2305752T3/es not_active Expired - Lifetime
- 2004-03-15 US US10/553,023 patent/US7445748B2/en not_active Expired - Fee Related
- 2004-03-15 AT AT04720565T patent/ATE398501T1/de active
- 2004-03-15 EP EP04720565A patent/EP1610917B1/de not_active Expired - Lifetime
- 2004-03-15 DE DE502004007389T patent/DE502004007389D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2004089562A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10316758A1 (de) | 2004-10-28 |
EP1610917B1 (de) | 2008-06-18 |
US7445748B2 (en) | 2008-11-04 |
ATE398501T1 (de) | 2008-07-15 |
ES2305752T3 (es) | 2008-11-01 |
DE502004007389D1 (de) | 2008-07-31 |
WO2004089562A1 (de) | 2004-10-21 |
US20060214338A1 (en) | 2006-09-28 |
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