WO2020044068A1 - Technologie de coulée pour des alliages de série 6000 et de série 1000 - Google Patents

Technologie de coulée pour des alliages de série 6000 et de série 1000 Download PDF

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Publication number
WO2020044068A1
WO2020044068A1 PCT/IB2018/000941 IB2018000941W WO2020044068A1 WO 2020044068 A1 WO2020044068 A1 WO 2020044068A1 IB 2018000941 W IB2018000941 W IB 2018000941W WO 2020044068 A1 WO2020044068 A1 WO 2020044068A1
Authority
WO
WIPO (PCT)
Prior art keywords
series
casting
alloys
sprues
vent channels
Prior art date
Application number
PCT/IB2018/000941
Other languages
English (en)
Inventor
Serafino DE VINCENTI
Original Assignee
De Vincenti Serafino
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 De Vincenti Serafino filed Critical De Vincenti Serafino
Priority to PCT/IB2018/000941 priority Critical patent/WO2020044068A1/fr
Publication of WO2020044068A1 publication Critical patent/WO2020044068A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082—Sprues, pouring cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
    • B22C9/26—Moulds for peculiarly-shaped castings for hollow articles for ribbed tubes; for radiators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/04—Casting aluminium or magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art

Definitions

  • the invention refers to a casting process of the aluminum and to the obtained piece having particular mechanical and thermal characteristic.
  • the casting processes in particular of the aluminum, provide three modalities: sand casting, shell casting and die casting.
  • the liquid aluminum is poured into molds by gravity, while in the die casting the aluminum is injected under pressure.
  • the known processes provide the casting of the aluminum, the placing into a ladle with the passing into a sprue, to reach the inside cavity of the melting case having the shape of the piece to be obtained and a vent channel for the exit of the air and of the material in excess.
  • the invention is able to avoid the cited disadvantages having a high fusion point and a bigger thermal conductivity in comparison with the casting containing consistent percentages of silicon.
  • the invented casting method permits to have a high fusion point, so to can arrange welding/soldering.
  • the invented method permits to use alloys never used in sand casting or in shell casting using alloys with low silicon content, i.e. series 6000 alloys, as for example the AIMgSiO,5 alloy and also almost pure aluminum, i.e. series 1000 alloys, as for example the Al 99,5 alloy, which have thermal conductivity higher than 150 W/m°K and fusion point higher to 640°C.
  • the high thermal conductivity of the aluminum alloys used in the invented process permits to make components to be cooling both to air than in liquid for electronic components, other than for all the uses wherein a high thermal conductivity is requested.
  • the casting technology with 6000 series and 1000 series alloys comprises a plurality of sprues and a plurality of vent channels realized in the mold shape to have different velocities of filling and of cooling of the shape jet.
  • the number of sprues and of the vent channels is different in relation to the piece to be obtained and this number is stated in advance to a thermodynamic/fluid dedicated simulation program.
  • the realization technique of the molds is used both for the sand casting than for the shell casting.
  • the plurality of the sprues and of the vent channels i.e.
  • Figure 1 is section view of an mold with plurality of sprues and plurality of vent channels with shape for sand casting.
  • Figure 2 is perspective vies of a jet obtained with the casting process according the invention, i.e. with four sprues and five vent channels in the sand casting. Detailed description.
  • the casting process with 6000 series and 1000 series alloys comprises at least two sprues 1 and at least three vent channels 2 wherein, introducing cast aluminum alloys 3 into the shape 4 by the plurality of sprues 1 and with air outflow and of the excess molten material from the plurality of vent channels 2, the aluminum alloy flows in less time, allowing to also use alloys with low silicon content, with increasing of the filling speed of the shape 4.
  • the number of the sprues 1 and of the vent channels 2 changes in relation to the piece to work and it is stated in advance to a thermodymanic/fluid dedicated simulated program.
  • the sprues 1 and the vent channels 2 are in number very high in comparison with the known art.
  • the casting method according the invention comprise the use of the alloy AIMgSi 0,5. Further said process uses also the alloy Al 99,5. Further, the casting process with more sprues and more vent channels permits to use also all the aluminum alloys.
  • the plurality of sprues and of vent channels low lastly the inside tensions of the material in the passage from liquid state to the solid one. thanks to a more effective cooling due to the sliding of the material in more short routes given to the presence of sprues and vent channels close to each other and in number stated by flux and temperature simulation programs.
  • these components obtained with the invented process, has the advantage to permit welding/soldering processes not possible with the jets obtained with the known casting technologies. Further, having more sprues and more vent channels is increased the production velocity, being possible to actuate the cast from more ladles placed in parallel. The number and the dimension of the plurality of sprues 1 and of vent channels 2 change in relation to the jet to be obtained.
  • the invention process is possible of numerous variations al part of the invented object. All the particulars can be changed with other technically equivalent without going out from the protection field given to the claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne une technologie de coulée pour des alliages de série 6000 et de série 1000 qui comprend au moins deux orifices de remplissage (1) et au moins trois canaux d'aération (2). En introduisant des alliages d'aluminium coulés (3) dans la forme (4) par la pluralité d'orifices de remplissage (1), en permettant l'écoulement, vers l'extérieur, de l'air et du matériau fondu en excès par la pluralité d'orifices d'aération (2), l'alliage d'aluminium s'écoule en moins de temps, ce qui permet également d'utiliser des alliages à basse teneur en silicium, et augmente la vitesse de remplissage de la forme (4).
PCT/IB2018/000941 2018-08-27 2018-08-27 Technologie de coulée pour des alliages de série 6000 et de série 1000 WO2020044068A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2018/000941 WO2020044068A1 (fr) 2018-08-27 2018-08-27 Technologie de coulée pour des alliages de série 6000 et de série 1000

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2018/000941 WO2020044068A1 (fr) 2018-08-27 2018-08-27 Technologie de coulée pour des alliages de série 6000 et de série 1000

Publications (1)

Publication Number Publication Date
WO2020044068A1 true WO2020044068A1 (fr) 2020-03-05

Family

ID=64665372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/000941 WO2020044068A1 (fr) 2018-08-27 2018-08-27 Technologie de coulée pour des alliages de série 6000 et de série 1000

Country Status (1)

Country Link
WO (1) WO2020044068A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2275584A1 (fr) 2004-04-05 2011-01-19 Nippon Light Metal Company Ltd. Alliage de coulée d'aluminium pour traitement thermique ayant une excellente conductivité thermique et procédé de son fabrication
WO2016181177A2 (fr) * 2015-05-14 2016-11-17 Alu-Öntö Kft. Procédé de coulage et moule en sable pourvu d'un système d'admission pour produire des pièces coulées en aluminium à parois au moins partiellement minces avec la technologie de moulage au sable au moyen d'un coulage par gravité

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2275584A1 (fr) 2004-04-05 2011-01-19 Nippon Light Metal Company Ltd. Alliage de coulée d'aluminium pour traitement thermique ayant une excellente conductivité thermique et procédé de son fabrication
WO2016181177A2 (fr) * 2015-05-14 2016-11-17 Alu-Öntö Kft. Procédé de coulage et moule en sable pourvu d'un système d'admission pour produire des pièces coulées en aluminium à parois au moins partiellement minces avec la technologie de moulage au sable au moyen d'un coulage par gravité

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