WO2005123304A2 - Giessverfahren und giessanlage für aluminium bzw. aluminiumlegierungen - Google Patents
Giessverfahren und giessanlage für aluminium bzw. aluminiumlegierungen Download PDFInfo
- Publication number
- WO2005123304A2 WO2005123304A2 PCT/EP2005/006486 EP2005006486W WO2005123304A2 WO 2005123304 A2 WO2005123304 A2 WO 2005123304A2 EP 2005006486 W EP2005006486 W EP 2005006486W WO 2005123304 A2 WO2005123304 A2 WO 2005123304A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casting
- pans
- station
- melt
- aluminum
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D47/00—Casting plants
Definitions
- the invention relates to a casting process for aluminum or aluminum alloys according to the preamble of claim 1 and a casting plant for performing the method.
- Casting processes and casting plants for aluminum or aluminum alloys are known in which solid or liquid aluminum is melted in a melting furnace and then held in a heat-holding furnace, from which the melt flows over a long channel to a casting station and is subjected to different treatments. is set. Alloy additives are added to the melt flowing through the trough and an inert cleaning gas (argon) is blown in before the melt reaches the casting station via a filter, where it is cast into semi-products (see Fig. 1, in which a conventional casting plant for aluminum is shown schematically). Homogenization of the melt is only possible to a limited extent. The treatment times are linked to the casting process and thus predetermined and limited in time.
- argon inert cleaning gas
- the individual treatment stations must be perfectly coordinated. If one of the stages of this in-line system does not work, the entire casting system must be shut down.
- the long channel that flows through the melt means a loss of temperature, so that the material in the heat-retaining furnace must be overheated so that a sufficient temperature can be reached at the casting station when starting up. Extensive casting times mean that the melting and holding furnace must be available for the entire casting time before the next melting rate is used. The energy consumption of the furnace is correspondingly high.
- flame furnaces reverberatory furnaces
- hydrocarbon as fuel are used, whereby the disadvantage of rapid absorption of hydrogen from the burner flame arises.
- greenhouse gases and other pollutants polluting the atmosphere are generated.
- the long, open channel for the flow of the melt also means that the metal absorbs the hydrogen from the atmosphere and causes the formation of slag.
- the present invention has for its object to propose a more economical and flexible casting process for aluminum or aluminum alloys and a casting system for performing the To create processes that allow an optimal timing for the treatment and casting of the aluminum melt and with which an improved quality of the semi-products to be produced can be achieved.
- pans according to the invention for treating and feeding aluminum melt in controllable sequences to preferably several casting stations, this process phase is decoupled in time from the actual casting process.
- the individual treatments are no longer fixed and limited in time, but can be adjusted as required until the desired quality of the melt to be cast is achieved in the respective pan.
- the method according to the invention is considerably more efficient than the in-line method, since the need for large heat-holding ovens is eliminated. If at all, the furnaces are used for melting and heating, but not for keeping warm over long periods of time. These can be designed as energetically efficient and ecologically advantageous induction furnaces. The invention is explained below with reference to the drawing. Show it:
- FIG. 1 shows schematically an embodiment of a casting plant for aluminum corresponding to the prior art
- FIG. 2 schematically shows an exemplary embodiment of a casting installation for aluminum according to the invention.
- Fig.l shows a prior art casting system 1 for aluminum or aluminum alloys.
- Liquid or solid aluminum is introduced as a starting material in a first stage or station 2, which comprises a melting furnace 3 and a heat-holding furnace 4 connected to it.
- the aluminum can be supplied from a filling space by means of a transport pan 5 or as a scrap load.
- the furnaces 3, 4 are generally large flame furnaces with hydrocarbon fuel.
- the melt produced in the melting furnace 3 is heated to the necessary temperature in the heat holding furnace 4 and partially homogenized by stirring.
- the aluminum melt After the aluminum melt has reached the required temperature, it is passed from the heat-holding furnace 4 via a long channel 6 (channel) to a casting station 7, through which it flows through various treatment stations 11, 12, which together with a filter 13 upstream of the casting station 7, pass a second one Stage 10 of the casting plant 1 is commonly known as gutter treatment.
- various alloy additives are added to the aluminum melt. Gas treatment takes place in the treatment station 12.
- the casting station 7, in which the aluminum melt is cast into semifinished products, can be operated continuously or semi-continuously in a manner known per se and therefore not described in detail.
- the treatment times in the trough stage 10 are linked to the casting process to be carried out in the casting station 7 and are thus predetermined and limited.
- the function of the individual treatment stations 11, 12, 13 must be perfectly coordinated with one another in terms of time. If one of the stages of this in-line system does not work, the entire casting system 1 must be put out of operation.
- the long channel or channel 6 through which the melt flows means a loss of temperature, so that the material in the heat-holding furnace 4 has to be overheated (for example to 730 ° C.) so that a sufficient temperature when starting up (for example 700 ° C) can be achieved.
- Extensive casting times mean that the melting and heat holding furnace 4 must be available for the entire casting time before the next melting rate is used.
- the energy consumption of the oven 3, 4 is correspondingly large.
- the flame furnace with hydrocarbon fuel has the disadvantage of rapid absorption of hydrogen from the burner flame.
- greenhouse gases and other pollutants polluting the atmosphere are generated.
- the long, open channel 6 (channel) for the flow of the aluminum melt also means that the metal absorbs the hydrogen from the atmosphere and causes the formation of slag.
- FIG. 2 shows a casting installation 1 according to the invention for aluminum or aluminum alloys.
- the first stage of the casting process according to the invention takes place in a filling station 21, in which hot aluminum melt is filled into a number of pans 25.
- the pans can have a capacity of 15 t, for example.
- Either liquid, hot (temperature approx. 900 ° C.) aluminum can be filled directly into the pans 25 by means of transport pans from a filling space, or at least one, preferably several, furnaces 22, 23, 24 are assigned to the filling station 21 and are used for delivery responsible for the aluminum melt, whereby in addition to liquid aluminum, aluminum scrap or blocks intended for remelting can serve as the starting material.
- the melt can, for example, be poured into one of the pans 25 at half-hourly intervals.
- aluminum melts of different quality can be poured into the pans 25 from the individual furnaces, the filling of the pans 25 with aluminum melt possibly also being computer-controlled with mixed material from different furnaces 22, 23, 24.
- Electric induction furnaces which are energetically considerably more efficient than flame furnaces can preferably be used as furnaces 22, 23, 24.
- This can be, for example, an induction furnace with a capacity of 20 t, from which the 15 t of aluminum melt is poured into one of the pans 25 and the remaining 5 t are helpful in melting another charge.
- the casting plant 1 has a cleaning and preparation station 30, from which cleaned and preheated pans 25a are transported to the filling station 21 for filling (pans 25 located on a transport route are generally designated by the letter T in FIG. 2).
- a cleaning and preparation station 30 from which cleaned and preheated pans 25a are transported to the filling station 21 for filling (pans 25 located on a transport route are generally designated by the letter T in FIG. 2).
- the pans 25a By preheating the pans 25a to, for example, 900 ° C., the pans with a temperature of approx. 800 ° C operated furnace 22, 23, 24 filled aluminum melt remain in the pans 25 until it drops to the typical casting temperature of 700 ° C than would be the case without preheating.
- the slag is skimmed off from the surface of the molten bath by placing the pan 25 in an inclined position.
- the pans 25 filled in the filling station 21 are transported to a treatment station 32, in which the second stage of the casting process takes place. Alloy additives are first introduced into the aluminum melt (see the pans labeled 25b in FIG. 2). (However, at least some of the alloy additives can also be introduced into the cleaned pans 25a before the melt is poured in.)
- the aluminum melt is then homogenized and cleaned (cf. pans 25c).
- the pans are placed underneath a fan wheel which can be immersed in the respective pan 25c for blowing in an inert gas, e.g. Argon or nitrogen, placed, a combined hydrogen removal, homogenization and / or heat regulation of the aluminum melt can take place.
- an inert gas e.g. Argon or nitrogen
- the pans 25 can be held in storage stations provided for this purpose (such storage stations are generally designated with the letter S in FIG. 2) until a casting station 33 or 34 is available.
- the casting plant 20 has preferably via several such casting stations (two shown in FIG. 2), to which the pans 25 can be transported from the treatment or storage station, and in which the melt is poured into semifinished products.
- the pans 25 can advantageously be covered with a lid.
- the temperature in the pan 25 can be reduced by blowing argon through a porous plug in the pan bottom or maintained or increased by means of a small burner built into the pan lid.
- the pans 25d at the respective pouring station 33, 34 are emptied through the pan bottom with a controllable opening of a slide closure, the outflowing aluminum melt being passed into a collecting channel, preferably with a jacket, by an inert gas.
- argon can be blown through the porous stopper in the pan base, thereby stirring and cleaning the melt.
- an inert atmosphere can be created in its upper region, which reduces the oxidation and absorption of hydrogen.
- the casting stations 33, 34 are each equipped in a manner known per se with a filter system and are operated continuously or semi-continuously
- pans 25d After the pans 25d have been emptied, they are transported to and in the cleaning and preparation station 30 already mentioned cleaned (see pan 25 e) and prepared for reuse, in particular preheated (see pan 25 a).
- the emptied pans can also be stored in storage stations S provided for them until they are used again.
- the casting system according to the invention is equipped with a control system with which the batches to be filled from individual furnaces 22, 23, 24 into the individual pans 25, the alloy additives, heating, cooling, gas supply and treatment times are controlled so that the aluminum melt is of the desired quality and with the desired quality Temperature and fully homogenized reaches the casting stations 33, 34.
- pans 25 according to the invention for treating and feeding aluminum melt in controllable sequences to preferably several casting stations 33, 34, this process phase is decoupled in time from the actual casting process.
- the individual treatments are no longer fixed and limited in time, but can be adjusted as required until the desired quality of the aluminum melt to be cast is achieved in the respective pan. If, for example, a low hydrogen content is required, the gas cleaning time (degassing) can be extended. This possibility did not exist with the traditional in-line method according to FIG. 1.
- the production capacity of the casting system depends on the actual casting process at the casting stations alone, which can be continued until the feed the treated aluminum melt to the casting stations is interrupted in a deliberate manner.
- the method according to the invention is considerably more efficient than the in-line method, since the need for large heat-holding ovens is eliminated. If at all, the furnaces are used for melting and heating, but not for keeping warm over long periods of time. These can be designed as energetically efficient and ecologically advantageous induction furnaces. By preheating the pans, the melt temperature that can be reached in the furnace can be lower.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
- Prevention Of Electric Corrosion (AREA)
- Mold Materials And Core Materials (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/629,712 US20080164000A1 (en) | 2004-06-16 | 2005-06-16 | Casting Method and Casting Installation for Aluminium or Aluminium Alloys |
CA002570361A CA2570361A1 (en) | 2004-06-16 | 2005-06-16 | Casting method and casting installation for aluminium or aluminium alloys |
AU2005254220A AU2005254220A1 (en) | 2004-06-16 | 2005-06-16 | Casting method and casting installation for aluminium or aluminium alloys |
MXPA06014600A MXPA06014600A (es) | 2004-06-16 | 2005-06-16 | Metodo de moldeo e instalacion de moldeo para aluminio y aleaciones de aluminio. |
JP2007515884A JP2008502483A (ja) | 2004-06-16 | 2005-06-16 | アルミニウムおよび/またはアルミニウム合金の鋳造法及び鋳造施設 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04405366.8 | 2004-06-16 | ||
EP04405366A EP1607156B1 (de) | 2004-06-16 | 2004-06-16 | Giessverfahren und Giessanlage für Aluminium bzw. Aluminiumlegierungen |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005123304A2 true WO2005123304A2 (de) | 2005-12-29 |
WO2005123304A3 WO2005123304A3 (de) | 2006-08-10 |
Family
ID=34932148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/006486 WO2005123304A2 (de) | 2004-06-16 | 2005-06-16 | Giessverfahren und giessanlage für aluminium bzw. aluminiumlegierungen |
Country Status (12)
Country | Link |
---|---|
US (1) | US20080164000A1 (de) |
EP (1) | EP1607156B1 (de) |
JP (1) | JP2008502483A (de) |
CN (1) | CN1976773A (de) |
AT (1) | ATE421398T1 (de) |
AU (1) | AU2005254220A1 (de) |
CA (1) | CA2570361A1 (de) |
DE (1) | DE502004008913D1 (de) |
MX (1) | MXPA06014600A (de) |
RU (1) | RU2007101384A (de) |
WO (1) | WO2005123304A2 (de) |
ZA (1) | ZA200609947B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2008238227A1 (en) * | 2007-04-16 | 2008-10-23 | Stopinc Aktiengesellschaft | Casting method and casting system for aluminum or aluminum alloys |
CN102151816B (zh) * | 2011-03-10 | 2013-04-24 | 山东滨州渤海活塞股份有限公司 | 铝活塞自动铸造机 |
CN104259396A (zh) * | 2014-07-10 | 2015-01-07 | 陕西国德电气制造有限公司 | 枕梁制备方法 |
CN115213393B (zh) * | 2022-07-09 | 2023-07-21 | 江苏政田新材料有限公司 | 一种锚链轮铸造用钢水过滤装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3736117A1 (de) * | 1987-10-26 | 1989-05-03 | Krupp Gmbh | Anlage zur herstellung von stahl, insbesondere ministahlwerksanlage |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8428251D0 (en) * | 1984-11-08 | 1984-12-19 | Alcan Int Ltd | Treating aluminium |
US4959101A (en) * | 1987-06-29 | 1990-09-25 | Aga Ab | Process for degassing aluminum melts with sulfur hexafluoride |
US5272720A (en) * | 1990-01-31 | 1993-12-21 | Inductotherm Corp. | Induction heating apparatus and method |
JPH09182958A (ja) * | 1995-12-28 | 1997-07-15 | Kusano Sangyo Kk | 溶湯取鍋の自動搬送装置 |
JP3680252B2 (ja) * | 1999-06-29 | 2005-08-10 | Jfeスチール株式会社 | 蓄熱式バーナの使用方法 |
JP3323489B1 (ja) * | 2000-12-27 | 2002-09-09 | 株式会社豊栄商会 | 溶融金属供給用容器 |
JP3621405B2 (ja) * | 2000-12-27 | 2005-02-16 | 株式会社豊栄商会 | 容器 |
JP2002205162A (ja) * | 2001-01-05 | 2002-07-23 | Hoei Shokai:Kk | 金属供給システム |
-
2004
- 2004-06-16 EP EP04405366A patent/EP1607156B1/de not_active Expired - Lifetime
- 2004-06-16 DE DE502004008913T patent/DE502004008913D1/de not_active Expired - Lifetime
- 2004-06-16 AT AT04405366T patent/ATE421398T1/de not_active IP Right Cessation
-
2005
- 2005-06-16 US US11/629,712 patent/US20080164000A1/en not_active Abandoned
- 2005-06-16 JP JP2007515884A patent/JP2008502483A/ja active Pending
- 2005-06-16 CN CNA2005800198473A patent/CN1976773A/zh active Pending
- 2005-06-16 AU AU2005254220A patent/AU2005254220A1/en not_active Abandoned
- 2005-06-16 WO PCT/EP2005/006486 patent/WO2005123304A2/de active Application Filing
- 2005-06-16 CA CA002570361A patent/CA2570361A1/en not_active Abandoned
- 2005-06-16 RU RU2007101384/02A patent/RU2007101384A/ru not_active Application Discontinuation
- 2005-06-16 MX MXPA06014600A patent/MXPA06014600A/es not_active Application Discontinuation
-
2006
- 2006-11-28 ZA ZA200609947A patent/ZA200609947B/xx unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3736117A1 (de) * | 1987-10-26 | 1989-05-03 | Krupp Gmbh | Anlage zur herstellung von stahl, insbesondere ministahlwerksanlage |
Also Published As
Publication number | Publication date |
---|---|
MXPA06014600A (es) | 2007-05-16 |
DE502004008913D1 (de) | 2009-03-12 |
US20080164000A1 (en) | 2008-07-10 |
ATE421398T1 (de) | 2009-02-15 |
CN1976773A (zh) | 2007-06-06 |
RU2007101384A (ru) | 2008-07-27 |
CA2570361A1 (en) | 2005-12-29 |
WO2005123304A3 (de) | 2006-08-10 |
JP2008502483A (ja) | 2008-01-31 |
EP1607156B1 (de) | 2009-01-21 |
AU2005254220A1 (en) | 2005-12-29 |
EP1607156A1 (de) | 2005-12-21 |
ZA200609947B (en) | 2008-11-26 |
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