WO2003045609A2 - Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression - Google Patents

Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression Download PDF

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Publication number
WO2003045609A2
WO2003045609A2 PCT/CH2002/000639 CH0200639W WO03045609A2 WO 2003045609 A2 WO2003045609 A2 WO 2003045609A2 CH 0200639 W CH0200639 W CH 0200639W WO 03045609 A2 WO03045609 A2 WO 03045609A2
Authority
WO
WIPO (PCT)
Prior art keywords
casting
die
casting device
starting materials
parts
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.)
Ceased
Application number
PCT/CH2002/000639
Other languages
German (de)
English (en)
Other versions
WO2003045609A3 (fr
Inventor
Benno Niedermann
Roberto Bologna
Marc Fuchs
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.)
Buehler Druckguss AG
Original Assignee
Buehler Druckguss AG
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
Priority claimed from DE2001158156 external-priority patent/DE10158156A1/de
Priority claimed from DE10231888A external-priority patent/DE10231888A1/de
Application filed by Buehler Druckguss AG filed Critical Buehler Druckguss AG
Priority to AT02776638T priority Critical patent/ATE305835T1/de
Priority to DE50204493T priority patent/DE50204493D1/de
Priority to US10/495,680 priority patent/US20050022384A1/en
Priority to EP02776638A priority patent/EP1448331B1/fr
Priority to AU2002339288A priority patent/AU2002339288A1/en
Publication of WO2003045609A2 publication Critical patent/WO2003045609A2/fr
Publication of WO2003045609A3 publication Critical patent/WO2003045609A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/005—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of rolls, wheels or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49481—Wheel making
    • Y10T29/49492—Land wheel
    • Y10T29/49524—Rim making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting

Definitions

  • the invention relates to a method for producing die-cast parts, in particular parts made of aluminum or magnesium materials.
  • the invention particularly relates to the manufacture of rims or wheels for the automotive industry.
  • Rims or wheels for vehicles are now manufactured from aluminum materials using the low-pressure casting process. These are mostly simply controlled low pressure casting machines with a high manual workload. Every machine needs an operator who is exposed to both the high temperatures of the molten metal and the exhaust gases from the casting process. The demolding of the cast parts is complex.
  • the manufacturer purchases the required aluminum alloy in ingot form and melts it in melting furnaces next to the low-pressure casting machine, i.e. the quality can also vary from machine to machine.
  • a metal block (ingot) of a mass which essentially corresponds to the casting weight is introduced into the gas space above the bath level of the casting machine and before or after Pulling or ejecting the casting is introduced into the bath of the casting machine.
  • DE-C-195 38 243 discloses a process for producing a semi-melted thixogiess casting material in which thixogiess material, which has an outer layer section with dendrites around an outer periphery of a main body section, is subjected to a heat treatment in order to to produce molten casting material with solid and liquid phases coexisting therein.
  • the dendrites respectively.
  • Dendrite fragments are transformed into spherical solid phases by increasing the temperature of the outer layer section with respect to the main body section, and the outer layer section is brought into a semi-melted state.
  • the use of skin effects is intended to prevent the main body from heating up too quickly.
  • Such a step-by-step method for heating is complex and requires several induction heating steps with different frequencies (powers).
  • the invention is therefore based on the object of developing a method for producing die-cast parts, in particular wheels or rims for vehicles, with which the disadvantages of the prior art can be overcome.
  • high-quality wheels and the like should be able to be produced with reduced effort.
  • the environmental impact should be noticeably reduced in connection with improved working conditions.
  • Another object of the invention is to provide a casting device for carrying out the method.
  • a die casting cell known as such with supply and heating devices for the casting material, a die casting machine, handling devices and control devices, heating devices are integrated which enable the gradual heating of bolts made of aluminum materials (possibly also magnesium materials), which then come into contact without any significant contact with the ambient air reach the die casting machine.
  • the cast parts After die casting or pressure forming, the cast parts are cooled and stored in a special process, and much faster than usual. It is characteristic of the heating process that a high, constant energy input is started and the energy input is then reduced after reaching the thixotropic structure in the metal area.
  • Fig. 1 a casting cell.
  • Fig. 2 a fixed mold frame in perspective.
  • Fig. 3 a mold frame in partial section
  • the casting cell contains a die casting machine 1 with a mold, a converter for the heating system 2, a monitor 3, a removal robot 5 for parts removal with a control unit 5, a loading robot 6 for feeding the slug with control unit 7 and a spray robot 8 with control unit 9 Molding temperature control devices 10, cooling stations 11 and 13, electrical, for example inductive heating units 12 for heating slugs (bolts), a device for parts control in front of a conveyor belt 16 for the discharge of non-quality parts and a further conveyor belt 15 for the discharge of the good parts.
  • a metal supply is also planned (Sluglager 17), an automatic cleaning station 18 and a manual cleaning station 20 for castings, a scale 19 and a repair area 21.
  • the die casting machine 1 is fed directly with slugs or bolts or portions that were previously heated in the heating units 12. They can be transferred directly and with no air into the casting chamber of die casting machine 1.
  • the heated slugs in closed containers are fed to the casting chamber of the die casting machine 1 by means of robots 6.
  • the containers are closed with a lid, so that the slugs are already heated in them and can be fed from the heating unit 12 to the casting chamber without protective gas when the target temperature is reached.
  • the container is provided with a lid which can be lifted off or which is articulated to the container.
  • the lid or the bottom of the container can also be provided with an additional and closable opening for pressure or vacuum emptying.
  • the container can be rather flat or tall and narrow.
  • a complete adaptation of the container to the shape of the material portion is not necessary, although the smallest possible volume of air in the closed container is advantageous. In particular, there should only be a small air gap between the lid and the material surface (portion). A seal that can be achieved through the shape and weight of the lid is usually sufficient.
  • the container With semi-solid materials, the container is simply emptied over the edge of the container.
  • the bolts can also be fed directly from a heatable supply space / feed channel, which can also be connected directly to the casting chamber, if necessary, the temperature being able to be increased during the transfer if necessary.
  • aluminum materials for example, an alloy No.
  • A357 (Al-Si7MgO, 6) is preferably used, which allows the cast parts to be quenched and stored in a shorter time (T5 treatment).
  • T5 treatment The heating before pouring takes place gradually. This can be divided into three areas.
  • a high-performance heating at the beginning a "cooking" after reaching the thixotropic structure in the area of the stud and in a homogenization for the final adjustment of the globulithic structure in the primary material.
  • an AI bolt with a diameter of 5 to 6 is first heated with constant high energy to approx. 550 to 570 ° C, whereby the difference in temperature inside the bolt is up to approx. 20 ° C.
  • the energy input becomes very high short time drastically reduced, kept very short time ( "cook") and then increased again and held again until a temperature of approximately 585 C C is reached and the temperature difference has dropped to about 2 to 3 degrees.
  • the procedure can be simplified to the extent that the step of lowering the energy input can take place more slowly and evenly over a longer period of time.
  • the individual bolts can also be “wrapped” in foil before heating, preferably in an aluminum foil, in order to avoid oxide formation etc. Shielding gas can also be used to avoid oxide formation.
  • the starting material for the slugs is a homogeneously distributed, fine-grained material, which forms a uniformly distributed, globular microstructure with grain finenesses of approx. 50-100 ⁇ m due to the heating process.
  • the latter is for e.g. high-quality wheels or rims, which are to be manufactured using an SSM process, are required.
  • the molds and casting tools have a modular structure, so that cost-effective and easily exchangeable mold packages are available for each wheel type. A quick change for the respective shaping part of the forms is possible.
  • the shape in the die casting machine 1 is e.g. two-part or three-part and variable use. Since the rim base remains unchanged per wheel dimension, only two mold plates have to be adapted to different front designs. These can still contain inserts that are made of an inexpensive and less high-strength material. The service life of such inserts can thus be adapted to the required number of rounds and only the basic shape has to consist of high-strength material.
  • the mold plates can also contain slide inserts that allow adjustable heights and widths in the front design (depending on the tire and rim dimensions) in defined areas, so that an extra shape is not required for each dimension.
  • the casting mold for producing a vehicle wheel from, for example, aluminum materials has a fixed molding frame 30 with a mold centering 31 as well as molded parts or slides 32 and cooling spirals.
  • the fixed mold frame 30 is connected to the casting chamber 34 in a conventional manner. It also has part-specific core elements for bores in the hub 36 of the wheel 35, which can also serve as ejector elements of the wheel 35. This means that no additional ejectors are required, but functional parts are used that are already required for other tasks (here as the core element).
  • the mold is filled from the hub 36 of the wheel 35 and between the hub surface and the gate 37 of the casting chamber 34, a filter or sieve 38 is arranged as an insert on the hub 36, which primarily serves to remove oxide skins of the SSM to be pressed in. Retain Bolzens, resp. to tear open and shred.
  • the sieve 38 is a stamped part made of aluminum or steel and perforated as desired according to the hub surface.
  • the bolts, not shown, are heated and fed with low O 2 .
  • the filling in the mold cavity is largely dry, ie without lubricant. Due to the sieve, there is no need for a shearing knife for the oxide skin of the bolt.
  • the casting chamber 34 and the casting piston of the die casting machine 1 preferably consist of a ceramic material in order to be able to dispense with lubricants and spraying agents as far as possible.
  • the molded parts or slide 32 are provided with drives and guides (not shown) in order to ensure that the molded parts or slide 32 are retracted and extended.
  • surfaces for locking the slide 32 are provided almost perpendicular to the support plane of the fixed mold frame 30. Furthermore, surfaces for locking the slide 32 are provided, which are arranged parallel to the abovementioned support plane on the slide 32 or the molded parts. Also almost perpendicular to the support plane mentioned, further surfaces for combined counter-locking and shape centering are provided.
  • Corresponding counter contours are formed in the movable mold frame 33.
  • the surfaces for locking the slide 32 are preferably on or in the fixed mold frame 30 and particularly preferably in a line.
  • the surfaces for mold centering are circumferential regardless of the number of molded parts or slides 32.
  • the forces acting during casting are thus distributed in the fixed mold frame 30 to the surfaces for combined mold centering and counter-locking to the right and left of the slide 32 - force transmission and force transmission are thus approximately in line and are easier to control.
  • the molded parts or slides 32 are available for the common range of wheel sizes (for example from 13 "to 22") and can be arranged in only one set of molded frames 30, 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Forging (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de production de pièces moulées sous pression, en particulier de jantes ou de roues pour véhicules, ainsi qu'un dispositif de moulage sous pression y relatif. En vue de produire des jantes ou des roues de haute qualité, les matériaux de départ sont chauffés progressivement dans une cellule de coulée, puis transférés sous forme semi-solide dans une machine de moulage sous pression et amenées ensuite sous la forme de pièces moulées sous pression.
PCT/CH2002/000639 2001-11-28 2002-11-26 Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression Ceased WO2003045609A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT02776638T ATE305835T1 (de) 2001-11-28 2002-11-26 Verfahren zur herstellung von druckgiessteilen und giesseinrichtung
DE50204493T DE50204493D1 (de) 2001-11-28 2002-11-26 Verfahren zur herstellung von druckgiessteilen und giesseinrichtung
US10/495,680 US20050022384A1 (en) 2001-11-28 2002-11-26 Method for producing die-cast parts and a die casting device
EP02776638A EP1448331B1 (fr) 2001-11-28 2002-11-26 Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression
AU2002339288A AU2002339288A1 (en) 2001-11-28 2002-11-26 Method for producing die-cast parts and a die casting device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10158156.4 2001-11-28
DE2001158156 DE10158156A1 (de) 2001-11-28 2001-11-28 Verfahren zur Herstellung von Druckgiessteilen und Giesseinrichtung
DE10231888.3 2002-07-12
DE10231888A DE10231888A1 (de) 2002-07-12 2002-07-12 Verfahren zur Herstellung von Druckgiesstellen und Giessform

Publications (2)

Publication Number Publication Date
WO2003045609A2 true WO2003045609A2 (fr) 2003-06-05
WO2003045609A3 WO2003045609A3 (fr) 2003-10-09

Family

ID=26010662

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2002/000639 Ceased WO2003045609A2 (fr) 2001-11-28 2002-11-26 Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression

Country Status (8)

Country Link
US (1) US20050022384A1 (fr)
EP (1) EP1448331B1 (fr)
CN (1) CN1596168A (fr)
AT (1) ATE305835T1 (fr)
AU (1) AU2002339288A1 (fr)
DE (1) DE50204493D1 (fr)
ES (1) ES2248613T3 (fr)
WO (1) WO2003045609A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007004241A1 (fr) * 2005-07-05 2007-01-11 Aluminio Tecno Industriales Orinoco C.A. Procédé et installation de fabrication de composants faits de billettes thixotropes d’un alliage aluminium pour véhicules, et composants obtenus ainsi
EP3645192B1 (fr) 2017-09-11 2022-12-14 Entec-Stracon GmbH Procédé, moule de coulée et dispositif pour la fabrication d'une roue de véhicule
US12246375B2 (en) 2017-09-11 2025-03-11 Entec-Stracon Gmbh Method, casting mold, and apparatus for producing a vehicle wheel

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013200A1 (de) 2007-03-15 2008-09-18 Bühler Druckguss AG Verfahren zur Herstellung von Druckgiessteilen und Giesseinrichtung
US9555468B2 (en) 2012-09-12 2017-01-31 Lucio Megolago Albani Process and plant for producing components made of an aluminium alloy for vehicles and white goods, and components obtained thereby
DE102014011587A1 (de) 2014-08-02 2016-02-04 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Armlehne für einen Fahrzeugsitz und Fahrzeugsitz mit der Armlehne
IT201700008841A1 (it) * 2017-01-27 2018-07-27 Fonderia Gattelli S R L Macchina e metodo di pressocolata in semisolido
DE102019130608A1 (de) * 2019-11-13 2021-05-20 Bayerische Motoren Werke Aktiengesellschaft Scheibenrad für ein Kraftfahrzeug sowie Verfahren zur Herstellung eines solchen Scheibenrades
CN113864505B (zh) * 2021-09-28 2022-07-12 常州通合新材料科技有限公司 电动阀门下壳体及其模具和生产工艺
CN117753939A (zh) * 2023-12-25 2024-03-26 太仓海嘉车辆配件有限公司 一种adc12铝合金压铸性能提升的压铸方法
CN121551575A (zh) * 2026-01-21 2026-02-24 湖南大学 一种带谐振腔的分体式组合轮毂及其分体制备工艺

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US5287911A (en) * 1988-11-10 1994-02-22 Lanxide Technology Company, Lp Method for forming metal matrix composites having variable filler loadings and products produced thereby
JP2832662B2 (ja) * 1992-03-10 1998-12-09 本田技研工業株式会社 高強度構造部材の製造方法
US5575325A (en) * 1993-02-03 1996-11-19 Asahi Tec Corporation Semi-molten metal molding method and apparatus
IT1274094B (it) * 1994-11-07 1997-07-15 Reynolds Wheels Int Ltd Procedimento di formatura tixotropica di cerchi per pneumatici in lega metallica reocolata.
US5758707A (en) * 1995-10-25 1998-06-02 Buhler Ag Method for heating metallic body to semisolid state
US5865238A (en) * 1997-04-01 1999-02-02 Alyn Corporation Process for die casting of metal matrix composite materials from a self-supporting billet
DE19805466B4 (de) * 1998-02-11 2006-01-12 Volkswagen Ag Vorrichtung und Verfahren zum Herstellen von Fluidbehältern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007004241A1 (fr) * 2005-07-05 2007-01-11 Aluminio Tecno Industriales Orinoco C.A. Procédé et installation de fabrication de composants faits de billettes thixotropes d’un alliage aluminium pour véhicules, et composants obtenus ainsi
EP3645192B1 (fr) 2017-09-11 2022-12-14 Entec-Stracon GmbH Procédé, moule de coulée et dispositif pour la fabrication d'une roue de véhicule
US12246375B2 (en) 2017-09-11 2025-03-11 Entec-Stracon Gmbh Method, casting mold, and apparatus for producing a vehicle wheel

Also Published As

Publication number Publication date
EP1448331B1 (fr) 2005-10-05
AU2002339288A1 (en) 2003-06-10
DE50204493D1 (de) 2006-02-16
ATE305835T1 (de) 2005-10-15
AU2002339288A8 (en) 2003-06-10
EP1448331A2 (fr) 2004-08-25
CN1596168A (zh) 2005-03-16
ES2248613T3 (es) 2006-03-16
WO2003045609A3 (fr) 2003-10-09
US20050022384A1 (en) 2005-02-03

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