EP0609196B1 - Zweikammerofen zur Schmelzenbeschickung von Giessmaschinen - Google Patents

Zweikammerofen zur Schmelzenbeschickung von Giessmaschinen Download PDF

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Publication number
EP0609196B1
EP0609196B1 EP94890018A EP94890018A EP0609196B1 EP 0609196 B1 EP0609196 B1 EP 0609196B1 EP 94890018 A EP94890018 A EP 94890018A EP 94890018 A EP94890018 A EP 94890018A EP 0609196 B1 EP0609196 B1 EP 0609196B1
Authority
EP
European Patent Office
Prior art keywords
chamber
melt
removal
storage chamber
withdrawal
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
Application number
EP94890018A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0609196A1 (de
Inventor
Erich Rauch
Josef Rapp
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.)
Ing Rauch Fertigungstechnik GmbH
Original Assignee
Ing Rauch Fertigungstechnik 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.)
Filing date
Publication date
Application filed by Ing Rauch Fertigungstechnik GmbH filed Critical Ing Rauch Fertigungstechnik GmbH
Publication of EP0609196A1 publication Critical patent/EP0609196A1/de
Application granted granted Critical
Publication of EP0609196B1 publication Critical patent/EP0609196B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces

Definitions

  • the invention relates to a two-chamber furnace for the melt loading of casting machines, with a storage chamber having a material feed device, a removal chamber having a melt removal device and a melt pump for transferring the melt from the storage chamber into the removal chamber, comprising a control device for the melt fill level in the removal chamber.
  • melt is pumped directly from the storage chamber into the removal chamber, an overflow being able to prevent overfilling of the removal chamber.
  • This level control is thus relatively expensive, it leads to the melt bath in the removal chamber being disturbed by the amount of melt flowing in, and moreover the two chambers remain in communication with one another at least with regard to their atmosphere, which inevitably leads to undesirable oxidation phenomena in the melt due to the air admission when the material is refilled.
  • the invention is therefore based on the object of eliminating these deficiencies and of rationally improving a two-chamber furnace of the type described above with regard to its function and effect.
  • the invention solves this problem in that an intermediate chamber is provided between the removal chamber and storage chamber, which communicates with the removal chamber on the one hand communicating via a compensating opening and on the other hand is connected to the storage chamber via an overflow, and in that the melt pump transfers the melt from the storage chamber into the Intermediate chamber promotes.
  • This intermediate chamber creates a lock located upstream of the removal chamber, which allows a complete separation between the store and the removal chamber. Since the melt is not conveyed directly into the removal chamber, but rather into the storage chamber for refilling the amount of feed removed, and the intermediate chamber with the storage chamber merely provides a communicating container, melt can also be refilled in the removal chamber without any undesirable bath movement. Apart from this, it is possible, due to the overflow of the intermediate chamber, by correspondingly overdosing the melt refill quantity, to adhere very precisely to the fill level in the removal container determined by the overflow height, without the need for expensive control devices and sensors.
  • the removal chamber, the intermediate chamber and the storage chamber are tightly covered and gas lines for creating a protective gas atmosphere open into the chambers, the risk of oxidation for the melt can be eliminated in a simple manner, since on the one hand the removal chamber, which is completely separated from the other furnace chambers, is good and safe from an undesired one Air access can be secured and a protective gas atmosphere can be applied, and the intermediate and storage chamber are also protected from air access by a suitable cover and protective gas. If the material feed device is also equipped with a suitable closure and preferably its own protective gas purging device, the protective gas atmosphere is retained even when the material is refilled.
  • a two-chamber furnace 1 with its insulating housing 2 and corresponding heating devices 3, 4 has a furnace insert 5 which forms two chambers, a storage chamber 6 and a removal chamber 7.
  • a tubular material feed device 8 leads into the storage chamber 6 and a melt removal device 9 projects into the removal chamber 7 for the actual casting machine loading.
  • an intermediate chamber 10 is provided which communicatively connects to the removal chamber 7 via a compensating opening 11 and is connected to the storage chamber 6 via an overflow pipe 12.
  • covers 14, 15 are provided and gas lines 16, 17 opening into the removal and storage chamber 7, 6 allow a protective gas atmosphere to be built up inside the chambers.
  • the material supply device 8 is provided with a suitable closure 18 and can be flushed with protective gas via a gas supply line 19.
  • the material to be cast is melted or kept warm in the storage chamber 6 and comes ready for pouring into the removal chamber 7, with a complete separation between the removal and storage chambers taking place through the intermediate chamber 10 and therefore the preparation measures in the storage chamber without a harmful reaction to the removal conditions the removal chamber 7 can be performed.
  • the melt pump 13 conveys processed melt from the storage chamber 6 into the intermediate chamber 10, so that the bath level in the removal chamber 7 is kept constant without unwanted bath movement.
  • the overflow 12 allows a fill level height determination in a simple manner by suitable overfilling of the intermediate chamber 10, the excess amount flowing back into the storage chamber through the overflow 12. Therefore, if the pump running time and thus the delivery rate are adapted to the time required for the casting machine to melt, there is an exact control of the filling level in the removal chamber 7 without expensive melt level sensors or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Devices For Molds (AREA)
EP94890018A 1993-01-26 1994-01-24 Zweikammerofen zur Schmelzenbeschickung von Giessmaschinen Expired - Lifetime EP0609196B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT115/93 1993-01-26
AT0011593A AT401302B (de) 1993-01-26 1993-01-26 Zweikammerofen zur schmelzenbeschickung von gussmaschinen

Publications (2)

Publication Number Publication Date
EP0609196A1 EP0609196A1 (de) 1994-08-03
EP0609196B1 true EP0609196B1 (de) 1996-03-20

Family

ID=3481924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94890018A Expired - Lifetime EP0609196B1 (de) 1993-01-26 1994-01-24 Zweikammerofen zur Schmelzenbeschickung von Giessmaschinen

Country Status (7)

Country Link
US (1) US5411240A (no)
EP (1) EP0609196B1 (no)
JP (1) JPH074850A (no)
AT (1) AT401302B (no)
DE (1) DE59400160D1 (no)
ES (1) ES2085184T3 (no)
NO (1) NO301998B1 (no)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
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DE4439214A1 (de) * 1994-11-03 1996-05-09 Schmitz & Apelt Loi Industrieo Magnesiumschmelzofen und Verfahren zum Schmelzen von Magnesium
AT404328B (de) * 1995-03-24 1998-10-27 Rauch Fertigungstech Gmbh Verfahren und vorrichtung zum beschicken von giessmaschinen
DE19747002C2 (de) * 1997-10-24 2000-09-21 Audi Ag Verfahren zum Betreiben eines Magnesiumschmelzofens
JPH11201646A (ja) * 1997-12-26 1999-07-30 Itsuryu So 溶融金属保温炉とその製造方法
DE19813416C2 (de) * 1998-03-26 2000-01-05 Univ Hannover Verfahren und Vorrichtung zur Handhabung von Schmelzen, insbesondere von Magnesium und Magnesiumlegierungen
WO2001005539A1 (de) * 1999-07-15 2001-01-25 Meltec Industrieofenbau Gmbh Schmelzofen zur beschickung einer giesseinrichtung
US6451248B1 (en) 2001-01-25 2002-09-17 Alcoa, Inc. Pressurized molten metal holder furnace
WO2002058862A2 (en) * 2001-01-25 2002-08-01 Alcoa Inc. Recirculating molten metal supply system and method
US6516868B2 (en) 2001-01-25 2003-02-11 Alcoa Inc. Molten metal holder furnace and casting system incorporating the molten metal holder furnace
US6500228B1 (en) * 2001-06-11 2002-12-31 Alcoa Inc. Molten metal dosing furnace with metal treatment and level control and method
US6503292B2 (en) * 2001-06-11 2003-01-07 Alcoa Inc. Molten metal treatment furnace with level control and method
US20070253807A1 (en) 2006-04-28 2007-11-01 Cooper Paul V Gas-transfer foot
US7402276B2 (en) 2003-07-14 2008-07-22 Cooper Paul V Pump with rotating inlet
US20050013715A1 (en) * 2003-07-14 2005-01-20 Cooper Paul V. System for releasing gas into molten metal
US7470392B2 (en) 2003-07-14 2008-12-30 Cooper Paul V Molten metal pump components
DE10256513B4 (de) * 2002-12-04 2009-11-26 Ing. Rauch Fertigungstechnik Ges.M.B.H. Verfahren zum Schmelzen eines Metalles und Vorrichtung zur Durchführung des Verfahrens
US7906068B2 (en) 2003-07-14 2011-03-15 Cooper Paul V Support post system for molten metal pump
EP1533390A1 (de) * 2003-11-19 2005-05-25 Ing. Rauch Fertigungstechnik GmbH Verfahren zum Herstellen einer Al- oder Mg-Legierung und Vorrichtung zur Durchführung des Verfahrens
DE102007025772A1 (de) 2007-05-24 2008-11-27 Meltec Industrieofenbau Gmbh Schmelzentiegel mit Überlauf für eine Gießmaschine
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US9409232B2 (en) 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US8366993B2 (en) 2007-06-21 2013-02-05 Cooper Paul V System and method for degassing molten metal
US8613884B2 (en) 2007-06-21 2013-12-24 Paul V. Cooper Launder transfer insert and system
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US8337746B2 (en) * 2007-06-21 2012-12-25 Cooper Paul V Transferring molten metal from one structure to another
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
JP2010096401A (ja) * 2008-10-15 2010-04-30 Sanken Sangyo Co Ltd 非鉄金属溶解炉
MX342815B (es) * 2009-06-16 2016-10-13 Pyrotek Inc Sistema de transferencia de vortice de sobreflujo.
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US8449814B2 (en) 2009-08-07 2013-05-28 Paul V. Cooper Systems and methods for melting scrap metal
US8714914B2 (en) 2009-09-08 2014-05-06 Paul V. Cooper Molten metal pump filter
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
EP2866962B1 (en) 2012-06-29 2017-01-18 Le Bronze Industriel Crucible for a machine for continuously casting a bar or a coil of a metal alloy
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10465688B2 (en) 2014-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
US10947980B2 (en) 2015-02-02 2021-03-16 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened blade tips
RU2712557C2 (ru) * 2015-02-27 2020-01-29 Пиротек, Инк. Переливной перекачивающий насос из материала с улучшенными свойствами
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
DE102016123595B4 (de) 2016-12-06 2018-10-31 Carsten Speckmann Gießofen für den Niederdruckguss
US11149747B2 (en) 2017-11-17 2021-10-19 Molten Metal Equipment Innovations, Llc Tensioned support post and other molten metal devices
US11471938B2 (en) 2019-05-17 2022-10-18 Molten Metal Equipment Innovations, Llc Smart molten metal pump
US11873845B2 (en) 2021-05-28 2024-01-16 Molten Metal Equipment Innovations, Llc Molten metal transfer device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136452B (de) * 1955-05-02 1962-09-13 Ajax Engineering Corp Schmelzofen zum intermittierenden Abgeben geschmolzenen Metalls und Verfahren zum Betreiben desselben
DE1508560B2 (de) * 1966-11-21 1970-08-06 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und orrichtung zum Entleeren von Schmelz- oder Warmhalteöfen
SE361683B (no) * 1972-03-29 1973-11-12 Asea Ab
JPH0780040B2 (ja) * 1990-09-14 1995-08-30 宇部興産株式会社 鋳造装置

Also Published As

Publication number Publication date
AT401302B (de) 1996-08-26
US5411240A (en) 1995-05-02
JPH074850A (ja) 1995-01-10
NO301998B1 (no) 1998-01-05
ES2085184T3 (es) 1996-05-16
ATA11593A (de) 1995-12-15
DE59400160D1 (de) 1996-04-25
NO940254D0 (no) 1994-01-25
EP0609196A1 (de) 1994-08-03
NO940254L (no) 1994-07-27

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