EP0392998A1 - Verfahren zur Herstellung von halbfesten Aluminiumgusslegierungen - Google Patents

Verfahren zur Herstellung von halbfesten Aluminiumgusslegierungen Download PDF

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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Withdrawn
Application number
EP90830169A
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English (en)
French (fr)
Inventor
Giovanni Crosti
Maria Polvara
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0392998A1 publication Critical patent/EP0392998A1/de
Withdrawn legal-status Critical Current

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    • 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.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP90830169A 1989-04-14 1990-04-17 Verfahren zur Herstellung von halbfesten Aluminiumgusslegierungen Withdrawn EP0392998A1 (de)

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 (de) 1990-10-17

Family

ID=11164274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90830169A Withdrawn EP0392998A1 (de) 1989-04-14 1990-04-17 Verfahren zur Herstellung von halbfesten Aluminiumgusslegierungen

Country Status (2)

Country Link
EP (1) EP0392998A1 (de)
IT (1) IT1229029B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
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 (de) * 1994-12-28 1996-07-03 Ahresty Corporation Verfahren zur Herstellung breiartiger Metallschmelze zum Giessen
EP0745694A1 (de) * 1995-05-29 1996-12-04 Ube Industries, Ltd. Verfahren und Vorrichtung zum Formen halbfester Metalle
DE19649015A1 (de) * 1996-11-27 1998-05-28 Atag Ks Aluminium Technologie Verfahren zur Herstellung von Aluminium Halbzeugen
WO2004031423A2 (en) * 2002-09-23 2004-04-15 Worcester Polytechnic Institute Method for making an alloy and alloy
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (de) * 1994-12-28 1996-07-03 Ahresty Corporation Verfahren zur Herstellung breiartiger Metallschmelze zum Giessen
US6595266B2 (en) * 1994-12-28 2003-07-22 Ahresty Corp. Method of manufacturing metallic slurry for casting
EP1331279A3 (de) * 1995-05-29 2004-01-02 Ube Industries, Ltd. Verfahren und Vorrichtung zum Formen halbfester Metalle
EP1331279A2 (de) * 1995-05-29 2003-07-30 Ube Industries, Ltd. Verfahren und Vorrichtung zum Formen halbfester Metalle
EP0745694A1 (de) * 1995-05-29 1996-12-04 Ube Industries, Ltd. Verfahren und Vorrichtung zum Formen halbfester Metalle
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 (en) * 2002-09-23 2004-04-15 Worcester Polytechnic Institute Method for making an alloy and alloy
WO2004031423A3 (en) * 2002-09-23 2004-07-01 Worcester Polytech Inst Method for making an alloy and alloy
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
IT8920157A0 (it) 1989-04-14
IT1229029B (it) 1991-07-12

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