EP0392998A1 - Procédé pour la fabrication d'alliages d'aluminium, coulés à l'état semi-liquide - Google Patents
Procédé pour la fabrication d'alliages d'aluminium, coulés à l'état semi-liquide Download PDFInfo
- Publication number
- EP0392998A1 EP0392998A1 EP90830169A EP90830169A EP0392998A1 EP 0392998 A1 EP0392998 A1 EP 0392998A1 EP 90830169 A EP90830169 A EP 90830169A EP 90830169 A EP90830169 A EP 90830169A EP 0392998 A1 EP0392998 A1 EP 0392998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- aluminium alloy
- semiliquid
- aluminium
- alloy
- 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.)
- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/12—Making non-ferrous alloys by processing in a semi-solid state, e.g. holding the alloy in the solid-liquid phase
Definitions
- the present invention relates to a method for making semiliquid aluminium alloys and a system for carrying out the method.
- aluminium based component making industries usually use aluminium and aluminium alloys either in the solid or in the liquid status.
- the present invention sets out to overcome the above mentioned drawbacks,by providing a method which is specifically adapted to make globular structure semiliquid cast aluminium alloys which method is devoid of any wear effect on the apparatus for carrying out the method itself.
- a main object of the present invention is to provide such a method affording the possibility of generating and properly controlling high shearing stresses on the semiliquid aluminium alloys,so as to precisely control the forming characteristics thereof.
- Another object of the present invention is to provide such a method which affords the possibility of accurately controlling the aluminium alloy cooling step,without contaminating the aluminium alloy or generating dangerous aluminium sprays.
- Yet another object of the present invention is to provide such a method which can be carried out,in a very reliable and safe way,by a very simple system.
- the method according to the present invention comprises the steps of introducing the aluminium alloy into a melting oven,for example a swinging oven or a pressurized oven,and bringing said aluminium alloy to a liquid status at a temperature of about 700°C.
- a melting oven for example a swinging oven or a pressurized oven
- the metal held in the oven is conveyed,through a suitable flow distributor,onto a broad metal surface or plate 2 which can be either of flat or curved configuration and the main feature of which is that it is so slanted as to downwardly convey the aluminium alloy.
- the plate 2,or surface is provided with a surface coating 3 made of a ceramics material,e.g. alumina or silicon carbide or zirconia or other suitable materials having comparable wear resistance characteristics.
- a ceramics material e.g. alumina or silicon carbide or zirconia or other suitable materials having comparable wear resistance characteristics.
- refrigerating media are caused to circulate which operate to cool,in a controlled and accurate way,said plate in order to reduce the temperature thereof.
- the refrigerating medium is circulated through said gap 4 without contaminating the semiliquid aluminium alloy and without originating dangerous aluminium sprays.
- the control of the process and of the proper stirring of the aluminium alloy is carried out by changing the slope angle of the plate or surface thereon the aluminium alloy is caused to flow,so as to provide a corresponding variation of the aluminium alloy falling rate.
- the aluminium alloy delivered from the mentioned tiltable plate or surface is then collected,in a semiliquid status,in suitable collecting vessels therein it is then cooled down.
- the cooled aluminium alloy can be used for forming component parts by conventional moulding and die casting methods.
- a great waste reduction is moreover obtained, together with a very small wear of the molds of the die casting system machines,which can be used at working temperature of at least 100°C less than conventional die casting temperatures.
- a power saving is further obtained since the melting ovens can be held in a rest condition at lower temperatures than conventional melting temperatures.
- a further advantage of the method according to the present invention is that it further affords the possibility of easily making very complex shape parts.
- the method according to the present invention provides a high production yield,since it is possible to greatly reduce the number of the used molds,with a less wear thereof.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2015789 | 1989-04-14 | ||
IT8920157A IT1229029B (it) | 1989-04-14 | 1989-04-14 | Processo per la produzione di leghe di alluminio colate allo stato semiliquido, nonche' impianto per la sua attuazione. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0392998A1 true EP0392998A1 (fr) | 1990-10-17 |
Family
ID=11164274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90830169A Withdrawn EP0392998A1 (fr) | 1989-04-14 | 1990-04-17 | Procédé pour la fabrication d'alliages d'aluminium, coulés à l'état semi-liquide |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0392998A1 (fr) |
IT (1) | IT1229029B (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19518127A1 (de) * | 1994-05-17 | 1995-11-23 | Honda Motor Co Ltd | Legierungsmaterial zum Thixo-Gießen, Verfahren zum Zubereiten semi-geschmolzenen Legierungsmaterials zum Thixo-Gießen und Thixo-Gießverfahren |
EP0719606A1 (fr) * | 1994-12-28 | 1996-07-03 | Ahresty Corporation | Procédé de production d'un métal en phase pâteuse pour couler |
EP0745694A1 (fr) * | 1995-05-29 | 1996-12-04 | Ube Industries, Ltd. | Procédé et dispositif pour mettre des métaux semi-solides en forme |
DE19649015A1 (de) * | 1996-11-27 | 1998-05-28 | Atag Ks Aluminium Technologie | Verfahren zur Herstellung von Aluminium Halbzeugen |
WO2004031423A2 (fr) * | 2002-09-23 | 2004-04-15 | Worcester Polytechnic Institute | Alliage sensiblement exempt de dendrites et procede permettant de former cet alliage |
US6769473B1 (en) | 1995-05-29 | 2004-08-03 | Ube Industries, Ltd. | Method of shaping semisolid metals |
US7051784B2 (en) * | 1997-07-24 | 2006-05-30 | Ahresty Corp. | Method of producing semi-solid metal slurries |
US7140419B2 (en) | 1999-07-26 | 2006-11-28 | Alcan Internatinoal Limited | Semi-solid concentration processing of metallic alloys |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2051597A (en) * | 1979-06-20 | 1981-01-21 | Fiat Ricerche | Preparation of a mixture comprising a solid phase and a liquid phase of a metal alloy |
GB2080692A (en) * | 1980-08-01 | 1982-02-10 | Fiat Ricerche | Static mixing apparatus |
-
1989
- 1989-04-14 IT IT8920157A patent/IT1229029B/it active
-
1990
- 1990-04-17 EP EP90830169A patent/EP0392998A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2051597A (en) * | 1979-06-20 | 1981-01-21 | Fiat Ricerche | Preparation of a mixture comprising a solid phase and a liquid phase of a metal alloy |
GB2080692A (en) * | 1980-08-01 | 1982-02-10 | Fiat Ricerche | Static mixing apparatus |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN; vol. 13, no. 225 (M-830)[3573], 25th May 1989; & JP-A-1-040 149 (MITSUBISHI HEAVY IND. LTD) 10-02-1989 * |
PATENT ABSTRACTS OF JAPAN; vol. 13, no. 244 (M-834)[3592], 7th June 1989; & JP-A-1-053 738 (MITSUBISHI HEAVY IND. LTD) 01-03-1989 * |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19518127C2 (de) * | 1994-05-17 | 1999-12-02 | Honda Motor Co Ltd | Verfahren zur Herstellung eines semi-geschmolzenen Legierungsmaterials zum Thixo-Gießen |
DE19518127A1 (de) * | 1994-05-17 | 1995-11-23 | Honda Motor Co Ltd | Legierungsmaterial zum Thixo-Gießen, Verfahren zum Zubereiten semi-geschmolzenen Legierungsmaterials zum Thixo-Gießen und Thixo-Gießverfahren |
US5849115A (en) * | 1994-05-17 | 1998-12-15 | Honda Giken Kogyo Kabushiki Kaisha | Alloy material for thixocasting, process for preparing semi-molten alloy material for thixocasting and thixocasting process |
EP0719606A1 (fr) * | 1994-12-28 | 1996-07-03 | Ahresty Corporation | Procédé de production d'un métal en phase pâteuse pour couler |
US6595266B2 (en) * | 1994-12-28 | 2003-07-22 | Ahresty Corp. | Method of manufacturing metallic slurry for casting |
EP1331279A3 (fr) * | 1995-05-29 | 2004-01-02 | Ube Industries, Ltd. | Procédé et dispositif pour mettre des métaux semi-solides en forme |
EP1331279A2 (fr) * | 1995-05-29 | 2003-07-30 | Ube Industries, Ltd. | Procédé et dispositif pour mettre des métaux semi-solides en forme |
EP0745694A1 (fr) * | 1995-05-29 | 1996-12-04 | Ube Industries, Ltd. | Procédé et dispositif pour mettre des métaux semi-solides en forme |
US6769473B1 (en) | 1995-05-29 | 2004-08-03 | Ube Industries, Ltd. | Method of shaping semisolid metals |
US6851466B2 (en) | 1995-05-29 | 2005-02-08 | Ube Industries, Ltd. | Method and apparatus for shaping semisolid metals |
US7121320B2 (en) | 1995-05-29 | 2006-10-17 | Ube Industries, Ltd. | Method for shaping semisolid metals |
DE19649015A1 (de) * | 1996-11-27 | 1998-05-28 | Atag Ks Aluminium Technologie | Verfahren zur Herstellung von Aluminium Halbzeugen |
US7051784B2 (en) * | 1997-07-24 | 2006-05-30 | Ahresty Corp. | Method of producing semi-solid metal slurries |
US7140419B2 (en) | 1999-07-26 | 2006-11-28 | Alcan Internatinoal Limited | Semi-solid concentration processing of metallic alloys |
WO2004031423A2 (fr) * | 2002-09-23 | 2004-04-15 | Worcester Polytechnic Institute | Alliage sensiblement exempt de dendrites et procede permettant de former cet alliage |
WO2004031423A3 (fr) * | 2002-09-23 | 2004-07-01 | Worcester Polytech Inst | Alliage sensiblement exempt de dendrites et procede permettant de former cet alliage |
US7513962B2 (en) | 2002-09-23 | 2009-04-07 | Worcester Polytechnic Institute | Alloy substantially free of dendrites and method of forming the same |
Also Published As
Publication number | Publication date |
---|---|
IT1229029B (it) | 1991-07-12 |
IT8920157A0 (it) | 1989-04-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES FR GB LI NL SE |
|
17P | Request for examination filed |
Effective date: 19910402 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
17Q | First examination report despatched |
Effective date: 19930204 |
|
18D | Application deemed to be withdrawn |
Effective date: 19921031 |