EP1970143A2 - Procédé pour la fabrication de pièces coulées sous pression et unité de coulée sous pression - Google Patents

Procédé pour la fabrication de pièces coulées sous pression et unité de coulée sous pression Download PDF

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Publication number
EP1970143A2
EP1970143A2 EP08102163A EP08102163A EP1970143A2 EP 1970143 A2 EP1970143 A2 EP 1970143A2 EP 08102163 A EP08102163 A EP 08102163A EP 08102163 A EP08102163 A EP 08102163A EP 1970143 A2 EP1970143 A2 EP 1970143A2
Authority
EP
European Patent Office
Prior art keywords
die
casting
mold
melt
casting machine
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Withdrawn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
EP08102163A
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German (de)
English (en)
Other versions
EP1970143A3 (fr
Inventor
Benno Niedermann
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
Application filed by Buehler Druckguss AG filed Critical Buehler Druckguss AG
Publication of EP1970143A2 publication Critical patent/EP1970143A2/fr
Publication of EP1970143A3 publication Critical patent/EP1970143A3/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a process for the production of die-cast parts, in particular parts made of aluminum or magnesium materials.
  • the invention relates in particular to the production of rims or wheels for the vehicle industry as well as engine blocks or structural components or other highly demanding die castings.
  • Rims or wheels for vehicles, especially motor vehicles, are today produced by the low pressure casting of aluminum materials. These are usually simply controlled low-pressure casting machines with a high proportion of manual work. Each machine requires 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 expensive.
  • the manufacturer (low pressure caster) acquires the required aluminum alloy in bar form and melts it in furnaces adjacent to the low pressure die casting machine, i.
  • the quality can also vary from machine to machine.
  • a method for casting motor vehicle wheels, aluminum, magnesium or the like consisting essentially of a crucible for keeping the melt, a mold arranged above the crucible and an emanating from the mold, the lid of the crucible and protruding into the Melt protruding melt riser, wherein the consumed by the casting of the molding metal is reloaded into the casting machine shows the DE-C-3619525 , It is characterized in that before each casting a metal block (Massel) of a casting weight substantially corresponding mass is introduced into the gas space above the bath level of the casting machine and introduced before or after pulling or ejecting the casting into the bath of the casting machine.
  • Massel massel
  • the EP-A-710 515 describes a Thixogiess vide of wheels with a Rheocast alloy and a device for this, in which a robot is used.
  • liquid aluminum is introduced into the mold.
  • the melt is first sucked into the casting chamber and then pressed into the mold cavity, whereby various deficiencies regarding vacuum and dosage can occur.
  • the casting is heated after removal from the mold for about three hours at 200 ° C to 400 ° C.
  • the invention is therefore an object of the invention to provide a method for producing Druckgiess negligence, especially of wheels or rims for vehicle engine blocks, structural components or other highly sophisticated die castings to develop that allows a simpler and more cost-effective process control.
  • high-quality wheels and the like with less effort to be produced.
  • the environmental impact should be noticeably reduced.
  • the aluminum materials are melted in a furnace, cleaned and prepared so that a better grain structure is achieved in the casting.
  • the melt is heated at a temperature of only approx. 610 ° C to max. Transferred 650 ° C in a casting chamber of a die casting machine and at a speed greater 50 m / s (up to about 65 m / s) spent at the gate in the mold.
  • the molten metal is drawn from an oven and the melt portion is poured into the casting chamber.
  • a die casting machine In a pressure casting device known per se with feeding and heating devices for the casting material, a die casting machine, handling devices and control devices, heating devices are integrated which enable handling and casting of molten aluminum melt.
  • Substantial advantages of the method according to the invention are that it can be carried out fully automatically, a better grain structure is achieved, and a cost reduction of up to 30% can be achieved in comparison with chill casting. Due to the low melt temperature (about 680-700 ° C are common in the prior art) also reduce energy consumption and mold wear. Also compared Thixogiessvon etc. the effort is significantly lower.
  • the casting cell includes a die casting machine 1 with an adaptive mold, a melt holding furnace 12 with an integrated metal cleaning and separate scooping chamber, a scooping device 11 for dosed feeding and provision of melt in the casting chamber 17 of the die casting machine 1, a control unit 4, a monitor 2 and a sprayer 5. Also provided are a removal robot 3, means for mold temperature control 6, a device for parts control 8 in front of a conveyor belt 9 for discharging non-quality parts and another conveyor belt 10 for discharging and cooling the Gutmaschine.-The die casting machine 1 are directly portions Melt fed previously heated in the furnace 12. They can be transferred to the casting chamber of the die casting machine 1.
  • Alloy # A356 Al-Si7Mg0.3
  • T5 time
  • the Al material is melted in the furnace 12 at about 630 ° to 680 ° C and cleaned or stirred. Subsequently, a portion with the ladle of the scoop 11 is removed, filled in the casting chamber 17 and pressed at a speed of more than 50 m / s (at the gate) in the mold. The melt temperature is still 610 ° C to 650 ° C.
  • the die casting machine is equipped with a real-time control ShotControl the applicant.
  • the risk of combustion of alloying elements is very small. Also, the risk of oxide formation can be minimized.
  • the lower temperatures allow shorter cycle times, which in turn contributes to the economic operation of die casting plants. Due to the lower casting temperatures, the solidification porosity can be reduced by up to 2/3. Thanks to the low metal temperatures, the life of the tools (molds) can be extended.
  • the molds and casting tools have a modular structure, so that cost-effective and easily replaceable mold packages are available for each type of wheel. A quick change for each shaping part of the forms is possible.
  • the mold in the die casting machine 1 is, for example, in two parts or in three parts and can be used variably. Since the rim bed per wheel dimension remains unchanged, only two mold plates have to be adapted to different front design. These can still Inserts that consist of a cheap and less high-strength material. Thus, the life of such inserts can be adapted to the required number of shots and only the basic shape must be made of high-strength material.
  • the mold plates may include slider inserts that allow adjustable heights and widths in the front design (depending on the tire and rim dimension) in defined areas, so that not for each dimension an extra shape is needed.
  • the mold for manufacturing a vehicle wheel comprises e.g. Aluminum materials a solid mold frame 13 with a mold centering and moldings or slide 14 and cooling coils on.
  • the fixed mold frame 13 is connected in a conventional manner with the casting chamber 17.
  • Casting chamber 17 and casting piston die casting machine 1 are preferably made of a ceramic material in order to be able to dispense with lubricants and spray as possible.
  • the moldings or slides 14 are provided with drives, not shown, and guides in order to ensure retraction and extension of the molded parts or slides 14.
  • Corresponding counter contours are formed in the movable mold frame 15.
  • the surfaces for locking the slider 14 are preferably located on the mold frame 16 and more preferably in a line.
  • the surfaces for mold centering are independent of the number of moldings or slide 14 formum secured.
  • the mold members 14 are available for the common range of wheel sizes (e.g., from 13 "to 22") and can be arranged in a single set of mold frames 13, 15, 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
EP08102163A 2007-03-15 2008-02-29 Procédé pour la fabrication de pièces coulées sous pression et unité de coulée sous pression Withdrawn EP1970143A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710013200 DE102007013200A1 (de) 2007-03-15 2007-03-15 Verfahren zur Herstellung von Druckgiessteilen und Giesseinrichtung

Publications (2)

Publication Number Publication Date
EP1970143A2 true EP1970143A2 (fr) 2008-09-17
EP1970143A3 EP1970143A3 (fr) 2009-02-25

Family

ID=39473294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08102163A Withdrawn EP1970143A3 (fr) 2007-03-15 2008-02-29 Procédé pour la fabrication de pièces coulées sous pression et unité de coulée sous pression

Country Status (2)

Country Link
EP (1) EP1970143A3 (fr)
DE (1) DE102007013200A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110523952A (zh) * 2019-10-15 2019-12-03 广东铭利达科技有限公司 一种局部薄壁件压铸模具和压铸工艺
DE102021104652A1 (de) 2021-02-26 2022-09-01 Schaufler Tooling Gmbh & Co.Kg Druckgussform und Verfahren zur Nutzung und Instandhaltung einer Druckgussform
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017002818A1 (de) 2017-03-23 2018-09-27 Cosateq Gmbh Verfahren zum Betrieb einer Druckgusspresse mit Lagenregelung und Druckgusspresse zur Ausführung des Verfahrens

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619525C1 (en) 1986-06-10 1987-08-06 Alulahn Giesserei Gmbh & Co Kg Method and apparatus for the production of castings, for example motor vehicle wheels, from aluminium, magnesium and similar light metals in low-pressure casting machines
EP0710515A1 (fr) 1994-11-07 1996-05-08 Reynolds Wheels International Ltd. Procédé thixotropique pour la fabrication de roues en alliage à l'état de mélange liquide-solide
US5638889A (en) 1992-03-14 1997-06-17 Asahi Tec Corportion Semi-molten metal molding apparatus
DE19538243C2 (de) 1994-10-14 1998-06-18 Honda Motor Co Ltd Verfahren zur Herstellung von semi-geschmolzenem Thixogieß-Gießmaterial
EP1448331B1 (fr) 2001-11-28 2005-10-05 Bühler Druckguss AG Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression
DE102005026829A1 (de) 2005-06-09 2006-12-21 Bd-Breyton-Design Gmbh Aluminium-Fahrzeugfelge und Verfahren zum Herstellen einer solchen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3869255B2 (ja) * 2001-06-14 2007-01-17 富士通株式会社 金属成形体製造方法およびこれにより製造される金属成形体
US20030056929A1 (en) * 2001-09-24 2003-03-27 Staley James T. Die casting of wrought aluminum alloys
JP4155509B2 (ja) * 2003-03-10 2008-09-24 株式会社豊田中央研究所 鋳造用アルミニウム合金とアルミニウム合金製鋳物およびその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619525C1 (en) 1986-06-10 1987-08-06 Alulahn Giesserei Gmbh & Co Kg Method and apparatus for the production of castings, for example motor vehicle wheels, from aluminium, magnesium and similar light metals in low-pressure casting machines
US5638889A (en) 1992-03-14 1997-06-17 Asahi Tec Corportion Semi-molten metal molding apparatus
DE19538243C2 (de) 1994-10-14 1998-06-18 Honda Motor Co Ltd Verfahren zur Herstellung von semi-geschmolzenem Thixogieß-Gießmaterial
EP0710515A1 (fr) 1994-11-07 1996-05-08 Reynolds Wheels International Ltd. Procédé thixotropique pour la fabrication de roues en alliage à l'état de mélange liquide-solide
EP1448331B1 (fr) 2001-11-28 2005-10-05 Bühler Druckguss AG Procede de production de pieces moulees sous pression, et dispositif de moulage sous pression
DE102005026829A1 (de) 2005-06-09 2006-12-21 Bd-Breyton-Design Gmbh Aluminium-Fahrzeugfelge und Verfahren zum Herstellen einer solchen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN110523952A (zh) * 2019-10-15 2019-12-03 广东铭利达科技有限公司 一种局部薄壁件压铸模具和压铸工艺
CN110523952B (zh) * 2019-10-15 2021-07-20 广东铭利达科技有限公司 一种局部薄壁件压铸模具和压铸工艺
DE102021104652A1 (de) 2021-02-26 2022-09-01 Schaufler Tooling Gmbh & Co.Kg Druckgussform und Verfahren zur Nutzung und Instandhaltung einer Druckgussform

Also Published As

Publication number Publication date
EP1970143A3 (fr) 2009-02-25
DE102007013200A1 (de) 2008-09-18

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