EP2283950A1 - Procédé et dispositif de dosage de métal fondu - Google Patents

Procédé et dispositif de dosage de métal fondu Download PDF

Info

Publication number: EP2283950A1
Authority: EP; European Patent Office
Prior art keywords: dosing; metering; container; nozzle; molten metal
Prior art date: 2009-08-12
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

Application number

EP10075346A

Other languages

German (de)

English (en)

Other versions

EP2283950B1 (fr

Inventor

Rudolf Hillen

Klaus Malpohl

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.)

Strikowestofen GmbH

Original Assignee

Strikowestofen GmbH

Priority date (The priority date 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 date listed.)

2009-08-12

Filing date

2010-08-12

Publication date

2011-02-16

2010-08-12 Application filed by Strikowestofen GmbH filed Critical Strikowestofen GmbH

2010-08-12 Priority to PL10075346T priority Critical patent/PL2283950T3/pl

2011-02-16 Publication of EP2283950A1 publication Critical patent/EP2283950A1/fr

2013-01-16 Application granted granted Critical

2013-01-16 Publication of EP2283950B1 publication Critical patent/EP2283950B1/fr

Status Active legal-status Critical Current

2030-08-12 Anticipated expiration legal-status Critical

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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
- B22D39/06—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
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel

Definitions

the invention relates to a method and a device for metering molten metal according to the preamble of the respective independent claim.
a metering device which usually comprises a pressure-tight vessel in which the molten metal is received.
a dispensing or metering tube protrudes into the molten metal and for metering or dispensing the metal, the vessel is pressurized, the pressure being measured by a differential pressure sensor and another sensor.
the molten metal rises under the influence of Compressed air from the vessel into the delivery tube high until it reaches electrodes that emit a signal, the associated pressure is stored.
the instantaneous pressure is measured in the vessel and the pressure prevailing at the delivery of the signal is subtracted.
the amount to be discharged is determined by setting a certain pressure over time.
the invention is therefore based on the object to provide a method and apparatus for metering molten metal from a container in which the dosing over a longer period of dosing and a variety of metering operations is improved.
At least one nozzle connected to a compressed gas source is arranged in the region of the outlet edge, at least parts of the region of the outlet edge can be kept free by continuous and / or pulse-like spraying of deposits of the metal, so that the metering quantity in many or all of successive metering operations is kept constant. This improves the dosing accuracy over a long period of operation.
the blow-off of residual metal can advantageously be adapted to the respective situation and / or alloy.
the spraying can be controlled automatically at the end of the metering operation, the furnace control signal being used to vent the furnace or reduce the delivery pressure in order to start the metering at the same time or with a time delay.
the delay time may be, for example, between 0.1 and 10 seconds and preferably between 0.5 and 3 seconds.
the duration of the compressed gas pulse depends on several parameters, for example the direction in which it is sprayed and the like.
the outlet edge can be sprayed continuously with hot air or hot gas.
a continuous hot gas spraying with a, preferably low volume flow, which is temporarily increased after the end of the dosing.
the continuous hot gas spraying can be interrupted for the duration of the dosing process.
the advantage of the hot gas nozzle is that the blowing out of the outlet edge is guaranteed even under difficult boundary conditions and that the compressed air impact can be carried out with less intensity after the end of the dosing process. Due to the lower intensity, the solidifying metallic melt is less affected in its flow and solidification behavior and it is avoided, for example, that metal is blown into the vicinity of the outlet channel.
the volume flow of the gas in the continuous spraying is lower than that of the pulsed spraying.
the outlet edge is not showered directly with gas, but via deflecting elements, such as the wall of the outlet channel.
the nozzles are not centric, that is not arranged in the plane of symmetry of the outlet channel, but laterally offset.
the gas is not directed directly to the liquid or solidifying melt stream and not to the melt in the metering furnace.
a device for metering molten metal from a container via a metering tube immersed in the container comprises a control device for determining the metered quantity and for controlling the metering process, and the metering tube has an outlet edge.
the metering tube has an outlet edge.
at least one nozzle connected to a compressed gas source is arranged for continuously and / or impulsively applying at least parts of the region of the outlet edge to gas and keeping it free of deposits of the metal.
the device can be designed with respect to the type of metering as described in the prior art.
the metal can increase by increasing the delivery pressure in the container in the dosing tube and the delivery rate can be determined depending on the delivery pressure. If an increase in the outlet edge by a height H1 due to deposits would occur, this would mean an additional necessary delivery pressure, namely the metallostatic pressure pxgxH1.
Another type of metering for example, uses a metering tube immersed in the container with a sensor assembly, wherein the height of the molten metal in the metering tube is detected by means of the sensor assembly and the metered amount is determined depending on the level of molten metal in the metering tube.
the compressed gas source comprises a controllable by the control valve.
the metering tube preferably opens into an outlet channel.
the at least one nozzle can be directed against at least one lateral wall of the outlet channel and can be arranged offset laterally to the feed channel.
the gas may be air or inert gas.
control device of the device according to the invention controls the valve after the dosing by a certain time delayed, the delay time between 0.1 and 10 seconds, preferably between 0.5 and 3 seconds.
Fig. 1 is a part of a pressurized gas metering furnace 1, which receives a molten metal 2.
the opening of the metering tube opens into an outflow channel 5, can flow through the molten metal in a form, not shown.
6 denotes a signal generator, which detects the height of the metal mirror in the metering tube 3 and which may be formed as electrodes, as a pneumatic sensor, optoelectronic sensor or the like.
an electrode 6 is shown, the metal contact by means of pneumatic pivoting device 14 out of the metering tube and thus out of the melt flow.
the metering furnace 1 is assigned a spraying device 11 which comprises one or more nozzles 7 opening into the region of an outlet edge 4 of the metering tube, a feed line 9 connected to the nozzles 7, a solenoid valve 8 and a compressed air source 12.
the metering furnace is associated with further thermocouples 13 for detecting the melt temperature.
Fig. 2 is a plan view of the metering tube 3 with the outlet edge 4 and the Ausfierrinne 5 shown.
the outflow channel 5 is inclined, so that the liquid metal flows from the metering tube 3 via the outlet edge under the action of gravity through the inclined channel 5.
the channel 5 is bounded by lateral walls 10 and the nozzles 7 end near this wall, so that the gas jet does not directly spray the melt flowing over the outlet edge 4.
the Bedüsungsvortechnisch 11 is preferably controlled by a control device, not shown, that by a brief opening of the solenoid valve 8 in the supply line 9, the compressed air or the compressed gas is passed to the nozzles 7 from the compressed air source 12, whereby a short, strong compressed air pulse in the Outlet edge is generated.
the compressed air pulse is controlled by the control device, not shown, so that it starts with a delay time after the end of a dosing.
a metal thread possibly depositing after the metering process is removed from the region of the outlet edge 4 and in particular blown away from the exit edge 4 itself. The process is repeated after each dosing.
Pressurized dosing furnaces are vented abruptly at the end of each dosing process and in these furnaces, the spraying of the outlet edge area with the venting signal can be started automatically. Since the melt flow does not stop abruptly at the end of the dosing process, the compressed air pulse is controlled in such a way that after the dosing has ended, a delay time is calculated, which additionally depends on the time of solidification of the melt.
hot gas or hot air is used and the outlet edge 4 is then sprayed indirectly or directly continuously. In this case, after the end of the metering operation, a blast of compressed air can additionally be applied in order to blow away metal which has not been removed by the continuous spraying.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

EP10075346A 2009-08-12 2010-08-12 Procédé et dispositif de dosage de métal fondu Active EP2283950B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL10075346T PL2283950T3 (pl)	2009-08-12	2010-08-12	Sposób i urządzenie do dozowania stopionego metalu

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102009037368A DE102009037368A1 (de)	2009-08-12	2009-08-12	Verfahren und Vorrichtung zum Dosieren von geschmolzenem Metall

Publications (2)

Publication Number	Publication Date
EP2283950A1 true EP2283950A1 (fr)	2011-02-16
EP2283950B1 EP2283950B1 (fr)	2013-01-16

Family

ID=43014320

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP10075346A Active EP2283950B1 (fr)	2009-08-12	2010-08-12	Procédé et dispositif de dosage de métal fondu

Country Status (5)

Country	Link
EP (1)	EP2283950B1 (fr)
DE (1)	DE102009037368A1 (fr)
ES (1)	ES2401125T3 (fr)
PL (1)	PL2283950T3 (fr)
PT (1)	PT2283950E (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102013220670A1 (de) *	2013-10-14	2015-04-16	Strikowestofen Gmbh	Verfahren und Vorrichtung zum Abgeben einer Dosiermenge einer Schmelze
ES2733513T3 (es)	2016-01-08	2019-11-29	Strikowestofen Gmbh	Dispositivo y procedimiento para la dosificación de material fundido

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2022989A1 (de)	1970-05-12	1971-12-30	Westofen Gmbh	Dosierautomatik fuer fluessige Metalle
DE3023262A1 (de)	1980-06-21	1982-01-14	Norsk Hydro Magnesiumgesellschaft mbH, 4300 Essen	Dosiereinrichtung zum foerdern von fluessigem metall
DE4029386A1 (de)	1990-09-12	1992-03-19	Strikfeldt & Koch	Verfahren und vorrichtung zum dosieren von fluessigkeiten, insbesondere von geschmolzenem metall
JPH0623510A (ja) *	1992-05-26	1994-02-01	Tanabe Kogyo Kk	不活性ガス給湯管給気給湯方法と装置と不活性ガス濃厚雰囲気樋と不活性ガス雰囲気ボックス
EP0946314B1 (fr)	1996-11-11	2003-06-25	StrikoWestofen GmbH	Four de dosage
JP2005211904A (ja) *	2004-01-27	2005-08-11	Aisin Takaoka Ltd	金属溶湯供給装置
EP1486277B1 (fr)	2003-06-13	2006-12-13	Meltec Industrieofenbau GmbH	Dispositif pour alimenter du métal en fusion aux dispositifs de coulée

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2043049B (en) *	1979-02-27	1983-06-15	Wiederaufarbeitung Von Kernbre	Method for controlling the discharge of molten material
CA2038233A1 (fr) *	1990-03-26	1991-09-27	Alusuisse Technology & Management Ltd.	Methode programmee d'alimentation d'un metal en fusion dans les moules d'une machine a coulee continue
AT405797B (de) *	1996-04-16	1999-11-25	Voest Alpine Stahl Donawitz	Verfahren und vorrichtung zum entfernen von giessansätzen aus schattenrohren

2009
- 2009-08-12 DE DE102009037368A patent/DE102009037368A1/de not_active Ceased
2010
- 2010-08-12 PT PT100753466T patent/PT2283950E/pt unknown
- 2010-08-12 ES ES10075346T patent/ES2401125T3/es active Active
- 2010-08-12 PL PL10075346T patent/PL2283950T3/pl unknown
- 2010-08-12 EP EP10075346A patent/EP2283950B1/fr active Active

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2022989A1 (de)	1970-05-12	1971-12-30	Westofen Gmbh	Dosierautomatik fuer fluessige Metalle
DE3023262A1 (de)	1980-06-21	1982-01-14	Norsk Hydro Magnesiumgesellschaft mbH, 4300 Essen	Dosiereinrichtung zum foerdern von fluessigem metall
DE4029386A1 (de)	1990-09-12	1992-03-19	Strikfeldt & Koch	Verfahren und vorrichtung zum dosieren von fluessigkeiten, insbesondere von geschmolzenem metall
JPH0623510A (ja) *	1992-05-26	1994-02-01	Tanabe Kogyo Kk	不活性ガス給湯管給気給湯方法と装置と不活性ガス濃厚雰囲気樋と不活性ガス雰囲気ボックス
EP0946314B1 (fr)	1996-11-11	2003-06-25	StrikoWestofen GmbH	Four de dosage
EP1486277B1 (fr)	2003-06-13	2006-12-13	Meltec Industrieofenbau GmbH	Dispositif pour alimenter du métal en fusion aux dispositifs de coulée
JP2005211904A (ja) *	2004-01-27	2005-08-11	Aisin Takaoka Ltd	金属溶湯供給装置

Also Published As

Publication number	Publication date
DE102009037368A1 (de)	2011-02-17
PT2283950E (pt)	2013-02-28
ES2401125T3 (es)	2013-04-17
EP2283950B1 (fr)	2013-01-16
PL2283950T3 (pl)	2013-06-28

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Publication	Publication Date	Title
DE69938068T2 (de)	2009-01-15	Vorrichtung zur Zerstäubung von Flüssigkeiten und Verfahren zum Schneiden
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EP2283950B1 (fr)	2013-01-16	Procédé et dispositif de dosage de métal fondu
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EP4072750A1 (fr)	2022-10-19	Procédé de coulée d'une masse fondue au moyen d'une cuve à masse fondue dans laquelle un espace de réception de masse fondue est formé
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DE2219818A1 (de)	1973-10-31	Verfahren und vorrichtung zur behandlung von metallschmelzen waehrend des stranggiessens
CH633728A5 (de)	1982-12-31	Verfahren zur vermischung fluessiger metalle beim schmelzen und vorrichtung zur ausfuehrung des verfahrens.
EP3493930B1 (fr)	2020-04-29	Pot anti-érosion, système de coulée de métal en fusion et procédé de coulée de métal en fusion
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KR101554338B1 (ko)	2015-09-21	용탕 분사용 노즐