EP2535126B1 - Vorrichtung und Verfahren zur Gewinnung halbfester Schlämme - Google Patents

Vorrichtung und Verfahren zur Gewinnung halbfester Schlämme Download PDF

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Publication number
EP2535126B1
EP2535126B1 EP11382201.9A EP11382201A EP2535126B1 EP 2535126 B1 EP2535126 B1 EP 2535126B1 EP 11382201 A EP11382201 A EP 11382201A EP 2535126 B1 EP2535126 B1 EP 2535126B1
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EP
European Patent Office
Prior art keywords
semi
crucible
solid
moveable part
slug
Prior art date
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Active
Application number
EP11382201.9A
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English (en)
French (fr)
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EP2535126A1 (de
Inventor
Iñigo LOIZAGA URBISTONDO
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.)
CIE Automotive SA
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CIE Automotive SA
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Publication date
Application filed by CIE Automotive SA filed Critical CIE Automotive SA
Priority to ES11382201.9T priority Critical patent/ES2632181T3/es
Priority to EP11382201.9A priority patent/EP2535126B1/de
Publication of EP2535126A1 publication Critical patent/EP2535126A1/de
Application granted granted Critical
Publication of EP2535126B1 publication Critical patent/EP2535126B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/007—Semi-solid pressure die casting
    • 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould

Definitions

  • the present invention relates to a device and a method for obtaining semi-solid sludges applicable in the metallurgical industry and more specifically in the field of manufacturing metal parts by means of any semi-solid state injection process in which closed vessels are used for preparing materials, preferably for preventing them from having a non-dendritic structure.
  • the shaping of materials by means of semi-solid state injection can be considered a process that is half-way between shaping by molding and solid state shaping.
  • the semi-solid state shaping of aluminum alloys is a process comprising elements of several classic shaping techniques, such as high-pressure injection, squeeze casting and forging.
  • semi-solid state shaping includes the fact that it allows a great deal of freedom in the design of the mold and a high production rate, as well as high metallurgical quality and mechanical properties that are better than those from permanent mold casting or high-pressure injection casting.
  • agitation makes it necessary to pour the liquid into a crucible or cylindrical or frustoconical vessel, and after reaching the non-dendritic semi-solid structure, the slug, i.e., the semi-solid mass, also called semi-solid sludge, must be extracted.
  • the semi-solid mass also called semi-solid sludge
  • SEED Simulation Enthalpy Equilibration Device
  • FIG. 1 A schematic sequence of the current SEED process for manufacturing semi-solid sludges (slugs) used in aluminum injection cells for obtaining customized slugs has been depicted in Figure 1 and comprises the following sequential steps.
  • An auxiliary crucible preparation process should also be performed which comprises applying a lubricant on the crucibles with a brush or spray gun in a manner similar to how the paint is applied, and it is subsequently dried in a furnace.
  • a lubricant there will be between 3 and 5 application layers, and the application frequency logically varies depending on the applied layers.
  • a first aspect of the present invention relates to an equipment for manufacturing metal injection parts as defined in claim 1.
  • a second aspect of the invention relates to a method for obtaining semi-solid sludges as defined in claim 4.
  • the molten aluminum is poured into a monobloc cylinder or crucible which is a recipient made of a refractory material used for melting a material at a very high temperature
  • the crucible is formed by two parts or shells which are preferably semi-cylindrical molten metal injection molds in which metal objects are melted, i.e., the invention proposes a crucible with two halves.
  • the semi-solid or slug is therefore demolded transversely rather than longitudinally. The risks of the slugs breaking during demolding are thus eliminated and the slug is prevented from remaining completely or partially adhered to the crucible.
  • Crucible cleaning processes are also significantly reduced.
  • the crucible according to the invention comprises two half-shells or parts, a half-shell fixed to the vibration table and a movable half-shell.
  • Fixing means have been provided for fixing the moveable part to the fixed part and to the vibration table which allow configuring the crucible for pouring and solidification and logically allow separating the moveable part for demolding.
  • the fixing means are made up of a tiltable grip assembled in an articulated manner on the vibration table which can be coupled onto a perimetric flange of the movable half-shell. This is obviously a specific embodiment but this fixing could be done in many ways.
  • the moveable shell When demolding, the moveable shell is separated from the fixed shell and the slug is in the moveable shell that is displaced to the piston of the injector.
  • This movement can be performed by means of a robot or any other type of automated installation.
  • the invention comprises a crucible recipient in two halves which can be used in manufacturing metal parts by means of any semi-solid state injection process (e.g. SEED) using closed vessels for preparing materials, preferably with a non-dendritic structure.
  • SEED semi-solid state injection process
  • one of the half-shells is permanently secured to the vibration (shaking) table and the other one will be moveable.
  • the moveable one will have three positions:
  • the movable half-shell has a type of grip plate which allows grabbing it and handling it by means of robot, manipulator or manually. Taking into account that the thicknesses must be uniform in the recipient, an insulator is introduced between the movable half-shell and the grip plate. This grip plate must ideally be located in the upper part of the recipient, at a height which the liquid aluminum/slug never reaches.
  • the bottom of the half-shells coming into contact with the shaking table can be open or closed, whichever is appropriate, because the drain hole is not required.
  • the cleaning process is much simpler in the double-shell system because the movable half-shell is brought closer to the cleaning-lubricating head which is always accessible and in the same position.
  • the double-shell system does not require much lubrication because the transverse demolding of the semi-crucibles is very easy due to the fact that it already has natural demolding. As less lubrication is needed, the thickness of the oxide layer enveloping the slug is less and the risk of displacing said oxides to the part when filling the mold is lower.
  • the process also comprises the following auxiliary steps:
  • the crucible recipient in two halves (half-shells) allows the transverse demolding of the slug and accordingly:
  • the risk of the slug adhering to the crucible is reduced, reducing interruptions caused by insufficient lubrication.
  • the recipient cleaning processes are significantly reduced, especially when the skin remains adhered to the crucible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Claims (6)

  1. Vorrichtung zum Herstellen von Metallspritzgussteilen, aufweisend einen Vibrationstisch, eine Hochdruckspritzeinheit (5) und eine Vorrichtung zum Erhalten halbfester Schlämme, dadurch gekennzeichnet, dass die Vorrichtung zum Erhalten halbfester Schlämme einen Schmelztiegel (1, 2) aufweist, der zumindest einen festen Teil (1), der fest mit dem Vibrationstisch verbunden ist, und zumindest einen beweglichen Teil (2) aufweist, der an den festen Teil (1) mittels Befestigungsmitteln (3) angebracht werden kann.
  2. Vorrichtung nach Anspruch 1, wobei die Befestigungsmittel (3) aus einer gelenkigen Klammer gebildet werden, die das Befestigen des beweglichen Teils (2) an das feste Teil (1) ermöglichen.
  3. Vorrichtung nach einem der vorangegangenen Ansprüche, aufweisend ein festes Teil (1) und ein bewegliches Teil, wobei beide halbzylindrisch sind.
  4. Verfahren zum Erhalten halbfester Schlämme, dadurch gekennzeichnet, dass dieses das Verwenden der Vorrichtung nach einem der Ansprüche 1 bis 3 aufweist.
  5. Verfahren nach Anspruch 4, welches aufweist
    A) Schmelzen von Aluminium und Gießen des geschmolzenen Aluminiums in den Schmelztegel, welcher durch zumindest ein bewegliches Teil (2) und zumindest ein festes Teil (1) gebildet wird, Kippen des Schmelztiegels, um das Gießen zu erleichtern und die Bildung von Gasen zu reduzieren,
    B) Schütteln des Schmelztiegels und Abkühlen des Aluminiums,
    C) Drehen des Schmelztiegels bis dieser horizontal ist und Abtrennen des beweglichen Teils, derart, dass eine erhaltene erstarrte Masse (4) in dem beweglichen Teil 2 für den Transport zur Hochdruckspritzeinheit (5) aufgenommen ist, und
    D) Ablegen der halbfesten Masse (4) auf dem Container der Hochdruckspritzvorrichtung (5) mittels Drehen des beweglichen Teils (2), Fallenlassen der halbfesten Masse (4) aufgrund der Schwerkraft und Pressen der halbfesten Masse (4) mit dem Kolben der Hochdruckspritzvorrichtung (5).
  6. Verfahren zum Materialformen, welches das Erhalten halbfester Schlämme mittels des Verfahrens nach einem der Ansprüche 4 bis 5 aufweist.
EP11382201.9A 2011-06-16 2011-06-16 Vorrichtung und Verfahren zur Gewinnung halbfester Schlämme Active EP2535126B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES11382201.9T ES2632181T3 (es) 2011-06-16 2011-06-16 Dispositivo y procedimiento de obtención de lodos semisólidos
EP11382201.9A EP2535126B1 (de) 2011-06-16 2011-06-16 Vorrichtung und Verfahren zur Gewinnung halbfester Schlämme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11382201.9A EP2535126B1 (de) 2011-06-16 2011-06-16 Vorrichtung und Verfahren zur Gewinnung halbfester Schlämme

Publications (2)

Publication Number Publication Date
EP2535126A1 EP2535126A1 (de) 2012-12-19
EP2535126B1 true EP2535126B1 (de) 2017-04-05

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EP11382201.9A Active EP2535126B1 (de) 2011-06-16 2011-06-16 Vorrichtung und Verfahren zur Gewinnung halbfester Schlämme

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EP (1) EP2535126B1 (de)
ES (1) ES2632181T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109622909B (zh) * 2019-01-28 2021-01-15 深圳市银宝山新压铸科技有限公司 一种高固相半固态减震塔的成型方法
CN109719268B (zh) * 2019-01-28 2021-01-15 深圳市银宝山新压铸科技有限公司 一种复合场制备半固态浆料的方法
CN109759555B (zh) * 2019-01-28 2021-03-30 深圳市银宝山新压铸科技有限公司 一种复合场制备半固态浆料的方法
CN110173985B (zh) * 2019-06-21 2024-04-26 南方科技大学 一种半固态浆料的制备装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69738657T2 (de) * 1997-12-20 2009-06-04 Ahresty Corp. Verfahren zur Bereitstellung eines Schusses aus breiartigem Metall
US6428636B2 (en) * 1999-07-26 2002-08-06 Alcan International, Ltd. Semi-solid concentration processing of metallic alloys
EP1358956A1 (de) * 2002-04-24 2003-11-05 Alcan Technology & Management Ltd. Verfahren zur Verarbeitung einer Metalllegierung zu einem teilfesten/teilflussigen Formkörper
EP1789221A4 (de) * 2004-08-30 2008-10-22 Alcan Int Ltd Vorrichtung und verfahren zur herstellung einer halbfestenmetallschmelze

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Also Published As

Publication number Publication date
ES2632181T3 (es) 2017-09-11
EP2535126A1 (de) 2012-12-19

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