EP0848652B1 - Procede et dispositif permettant de remplir un outil de fonderie avec un metal en fusion - Google Patents

Procede et dispositif permettant de remplir un outil de fonderie avec un metal en fusion Download PDF

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Publication number
EP0848652B1
EP0848652B1 EP96934361A EP96934361A EP0848652B1 EP 0848652 B1 EP0848652 B1 EP 0848652B1 EP 96934361 A EP96934361 A EP 96934361A EP 96934361 A EP96934361 A EP 96934361A EP 0848652 B1 EP0848652 B1 EP 0848652B1
Authority
EP
European Patent Office
Prior art keywords
annular chamber
piston
mould cavity
metal melt
molten metal
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.)
Expired - Lifetime
Application number
EP96934361A
Other languages
German (de)
English (en)
Other versions
EP0848652A1 (fr
Inventor
Heinrich Baumgartner
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.)
BBS Motorsport and Engineering GmbH
Original Assignee
BBS Motorsport and Engineering GmbH
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 BBS Motorsport and Engineering GmbH filed Critical BBS Motorsport and Engineering GmbH
Publication of EP0848652A1 publication Critical patent/EP0848652A1/fr
Application granted granted Critical
Publication of EP0848652B1 publication Critical patent/EP0848652B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • 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
    • B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
    • 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
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices

Definitions

  • the invention relates to a method and an apparatus for Filling a casting tool with a molten metal according to the The preamble of claim 1 and claim 2.
  • the invention has for its object to fill the To improve casting tool with a molten metal so that shorter cycle times with an improved quality of the casting can be united.
  • this object is achieved by a method with the features of claim 1 and by a device with the features of claim 2.
  • the basic idea of the invention is to melt the metal from the annular chamber into the mold cavity through a To displace the piston, which is slidable within the annular chamber is stored. This ensures that in the end of the filling cycle the further supply of molten metal is prevented.
  • the piston advances the molten metal and pushes them out of the ring chamber into the mold cavity inside.
  • the molten metal can therefore be supplied without turbulence, which reduces the formation of voids and the quality of the Casting is increased.
  • the faster supply of the molten metal and the shorter ones Flow paths of the molten metal in the mold cavity a reduction the temperature of the molten metal supplied. this means a further reduction in wear and a Saving energy.
  • the molten metal solidify faster, which on the one hand results in an additional shortening the total cycle time and also the dendrite growth reduced, so that the casting better mechanical Has characteristic values due to smaller dendrite arm distances.
  • the annular chamber is provided with at least one piston which can be pressed into the volume of the annular chamber. This The piston closes the feed channel of the molten metal and presses the molten metal remaining in the ring chamber into the mold cavity.
  • the method and the device can preferably be used rotationally symmetrical castings are used, for example for the production of alloy wheels for vehicles.
  • the method and the device can be used with all known die casting processes, especially in low pressure casting machines, in back pressure casting machines, in press casting machines, with "squeeze” effect and with vacuum casting machines.
  • the casting tool consists of a steel mold that is assembled is made of a lower tool part 10, an upper one Tool part 12 with a central insert 14 and slides 16.
  • the lower tool part 10 is fixed on a base plate 18 assembled.
  • the upper tool part 12 and its central insert 14 can be moved vertically. If necessary, the upper tool part 12 also integrally formed with the central insert 14 his.
  • a jack 20 is guided.
  • a retaining ring 22 is mounted, the lower tool part 10 coaxially encloses.
  • the retaining ring 22 is radial to the outer circumference of the lower tool part 10 spaced so that between the outer circumference of the lower tool part 10 and an axially adjoining paragraph the base plate 18 on the one hand and the inner circumference of the retaining ring 22 on the other hand, a cylindrical annular chamber 24 is formed becomes.
  • the annular chamber 24 is through the base plate 18 completed, with a fluid pressure channel 26 through the base plate 18 leads from below into the annular chamber 24.
  • Down in the Annular chamber 24 is an annular piston 28 which supports the fills the entire horizontal cross section of the annular chamber 24 and has half the axial height of the annular chamber 24.
  • the piston 28 is in the annular chamber 24 on its outer circumference and on its Inner circumference tightly guided.
  • the piston 28 can by Pressurization via the fluid pressure channel 26 in the annular chamber 24 are pushed upwards.
  • the piston 28 pushed up by several hydraulically operated jacks become.
  • a feed channel 30 leads through the retaining ring 22 above the Piston 28 in the annular chamber 24.
  • the feed channel 30 extends radially through the retaining ring 22 and rises axially from the outside inside.
  • An inflow pipe 32 which is acted upon by a pressure piston is frictional and tight with a dome-shaped Mouthpiece to the radially outer end of the feed channel 30 then inserted into the retaining ring.
  • the annular chamber 24 opens out at its upper end over its entire length Circumference and over their entire radial width in the mold cavity of the casting tool on its outer circumference.
  • the annular chamber 24 opens into the formed by the lower tool part 10 and the sliders 16 Area of the mold cavity that is the outer rim flange of the wheel forms.
  • the casting process is as follows:
  • the upper tool part 12 with the central insert is located 14 in the raised upper position and the piston 28 lies at the bottom in the annular chamber 24, as in the right one Half of the drawing is shown.
  • the annular chamber 24 is fed above the piston 28.
  • the molten metal fills the annular chamber 24 and the mold cavity of the lower one Tool part 10, so that in the lower tool part 10th sets a characteristic bottom depth of the molten metal.
  • the amount of molten metal supplied in this way is dosed according to the shape and weight of the cast body.
  • Central insert 14 are driven down so that the tool is closed in the hub area. Then that will upper tool part 12 moved down and displaced and compresses the molten metal in the area of the spokes.
  • the compression in the hub area is done by lifting the jack 20 from below into the middle hub area, in which the hub bore is inserted later.
  • the feed channel 30 preferably does not open out in a circular manner Cross section into the annular chamber 24, but widens when Open into the annular chamber 24 delta-shaped in the circumferential direction the annular chamber 24. This distributes the through the feed channel 30 molten metal flowing into the annular chamber 24 more evenly on both sides in the circumferential direction and one laminar flow of the molten metal as it flows into the Annulus 24 is favored.
  • the piston 28 can be a one-piece closed ring body be trained. It is also possible to use a piston 28 or to divide several radial joints, the thermal Take up extensions of the piston 28 in the circumferential direction.
  • the piston 28 can also be divided into several (preferably 2) coaxially nested and axially displaceable Ring body may be divided, which pressurized separately and can be moved.
  • the outer ring body is first applied to close the feed channel 30 and interrupt the metal supply.
  • the inner ring body serves to melt the metal from the annular chamber 24 into the To displace mold cavity and especially in the pouring area condense.
  • annulus 24 is not above hers entire circumference must flow freely into the mold cavity. Essential is that the largest possible inflow cross section exists between the annular chamber 24 and the mold cavity.
  • annular chamber 24 is not necessarily must open on the outer circumference of the mold cavity, but can also open out in a radially central region. Where the annular chamber 24 opens into the mold cavity is expedient set according to the shape of the cast body. The farther the annular chamber 24 is arranged radially outside, the larger the inflow cross section and the more effective the invention Benefits used.
  • the annular chamber 24 does not have to have a rotationally symmetrical shape, but can also take the form of a polygon, for example to have.
  • the piston may be individual Piston body divided, which correspond to the individual polygon sides.
  • the method according to the invention can also be used for non-rotationally symmetrical ones Castings are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Heat Treatment Of Articles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (13)

  1. Procédé servant à remplir un outil de coulée avec un bain de fusion, dans lequel on amène tout d'abord le bain de fusion de façon décentralisée à une chambre annulaire, qui est en liaison par au moins la plus grande partie de son pourtour avec la cavité de moulage de l'outil de coulée, et ensuite on fait couler le bain de fusion à partir de cette chambre annulaire dans la cavité de moulage, caractérisé en ce qu'
    à la fin du cycle de remplissage l'arrivée du bain de fusion dans la chambre annulaire est interrompue par au moins un piston qui peut coulisser dans la chambre annulaire, le piston refoulant le bain de fusion à partir de la chambre annulaire dans la cavité de moulage.
  2. Dispositif servant à remplir un outil de coulée avec un bain de fusion, comprenant au moins un canal d'amenée (30) pour le bain de fusion, qui est disposé de façon décentralisée par rapport à la cavité de moulage de l'outil de coulée et qui débouche dans une chambre annulaire (24), la chambre annulaire (24) débouchant sur au moins la plus grande partie de son pourtour dans la cavité de moulage, caractérisé en ce qu'
    au moins un piston (28) est monté de façon à pouvoir coulisser dans la chambre annulaire (24) d'une manière telle qu'il obture, quand il est en position enfoncée, au moins l'un des canaux d'amenée (30).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    le piston (28) peut lors de son enfoncement dans la chambre annulaire (24) refouler le bain de fusion à partir de la chambre annulaire (24) dans la cavité de moulage.
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que
    la chambre annulaire (24) est disposée sur le pourtour extérieur de la cavité de moulage et se raccorde avec la même forme au contour extérieur de la cavité de moulage.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que
    la chambre annulaire (24) débouche sur la totalité de son pourtour de façon ouverte dans la cavité de moulage de l'outil.
  6. Dispositif selon l'une des revendications 2 à 5, caractérisé en ce que
    le piston (28) est un corps fermé sur la totalité du pourtour de la chambre annulaire (24), corps dont la surface de la section transversale coïncide avec la surface de la section transversale de la chambre annulaire (24).
  7. Dispositif selon l'une des revendications 2 à 6, caractérisé en ce que
    le piston (28) est subdivisé par au moins une ligne de joint radiale.
  8. Dispositif selon l'une des revendications 2 à 7, caractérisé en ce que
    le piston (28) est subdivisé en au moins deux corps de piston qui sont montés de façon coaxiale l'un par rapport à l'autre et qui peuvent coulisser de façon coaxiale l'un contre l'autre.
  9. Dispositif selon l'une des revendications 2 à 8, caractérisé en ce que
    l'un au moins des canaux d'amenée (30) débouche dans la chambre annulaire (24) en direction du pourtour de la chambre annulaire (24) en s'élargissant en forme de delta.
  10. Dispositif selon l'une des revendications 2 à 9, caractérisé en ce que
    la chambre annulaire (24) est constituée en forme d'anneau circulaire.
  11. Dispositif selon l'une des revendications 2 à 9, caractérisé en ce que
    la chambre annulaire (24) est constituée sous une forme polygonale.
  12. Dispositif selon la, revendication 10, servant à fabriquer des pièces de fonderie symétriques de révolution, en particulier des roues de véhicules en métal léger, caractérisé en ce que la chambre annulaire (24) et le piston (28) ont la forme de cylindres rectilignes à base circulaire.
  13. Dispositif selon la, revendication 12, servant à fabriquer des roues de véhicules en métal léger, caractérisé en ce que
    la chambre annulaire (24) débouche dans la zone de la cavité de moulage que forme la corne extérieure de la jante.
EP96934361A 1995-09-09 1996-08-14 Procede et dispositif permettant de remplir un outil de fonderie avec un metal en fusion Expired - Lifetime EP0848652B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19533447A DE19533447C1 (de) 1995-09-09 1995-09-09 Verfahren und Vorrichtung zum Befüllen eines Gießwerkzeugs mit einer Metallschmelze
DE19533447 1995-09-09
PCT/DE1996/001544 WO1997009137A1 (fr) 1995-09-09 1996-08-14 Procede et dispositif permettant de remplir un outil de fonderie avec un metal en fusion

Publications (2)

Publication Number Publication Date
EP0848652A1 EP0848652A1 (fr) 1998-06-24
EP0848652B1 true EP0848652B1 (fr) 1999-10-27

Family

ID=7771754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934361A Expired - Lifetime EP0848652B1 (fr) 1995-09-09 1996-08-14 Procede et dispositif permettant de remplir un outil de fonderie avec un metal en fusion

Country Status (13)

Country Link
US (1) US6105658A (fr)
EP (1) EP0848652B1 (fr)
KR (1) KR970706928A (fr)
AT (1) ATE185990T1 (fr)
AU (1) AU705079B2 (fr)
BR (1) BR9610360A (fr)
CA (1) CA2231406C (fr)
DE (2) DE19533447C1 (fr)
ES (1) ES2139387T3 (fr)
MY (1) MY115849A (fr)
NO (1) NO319939B1 (fr)
TW (1) TW320579B (fr)
WO (2) WO1997009137A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216689A1 (de) * 2012-08-27 2014-02-27 Honda Motor Co., Ltd. Verfahren und Vorrichtung zum Pressgießen

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704649C1 (de) * 1997-02-07 1998-06-18 Bbs Motorsport & Eng Gmbh Verfahren und Vorrichtung zum Herstellen eines Gußstücks
DE19803866A1 (de) * 1998-01-31 1999-08-05 Volkswagen Ag Gießform und Verfahren zum Herstellen von Gußstücken
US7833529B1 (en) 1999-01-07 2010-11-16 Zymogenetics, Inc. Methods for inhibiting B lymphocyte proliferation with soluble ztnf4 receptor
RS52228B (en) 2001-05-24 2012-10-31 Zymogenetics, Inc. TACI-IMUNOGLOBULINSKI PROTEIN FUNCTIONS
ITPD20010265A1 (it) * 2001-11-08 2003-05-08 Bbs Riva Spa Struttura perfezionata di stampo particolarmente per cerchi di veicoli stradali.
ZA200801354B (en) 2005-08-09 2009-08-26 Ares Trading Sa Methods for treating B-cell malignancies using TACI-lg fusion molecule
JP5118037B2 (ja) 2005-08-09 2013-01-16 ザイモジェネティクス， インコーポレイテッド Ｔａｃｉ融合分子を用いた異常細胞増殖の処置及び予防のための方法
NZ572373A (en) 2006-05-15 2012-02-24 Ares Trading Sa Methods for treating rheumatoid arthritis using a taci-ig fusion molecule
DE102006025830B4 (de) * 2006-06-02 2008-02-14 Raskopf GmbH Sauerländer Werkzeugfabrik Kokille
DE102013105435B3 (de) 2013-05-27 2014-07-10 Schuler Pressen Gmbh Gießventil mit einem Nachverdichtungskolben
CN108580843A (zh) * 2018-03-13 2018-09-28 中信戴卡股份有限公司 一种铝车轮连铸连锻成形工艺

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JPS54115628A (en) * 1978-03-01 1979-09-08 Nissan Motor Casting mold for blade such as torque converter and like
JPS6061155A (ja) * 1983-09-10 1985-04-08 Agency Of Ind Science & Technol 溶湯鍛造装置
JPS6082259A (ja) * 1983-10-06 1985-05-10 Toyota Motor Corp 分散強化合金鋳物の製造方法
EP0356736B1 (fr) * 1988-07-31 1996-11-06 Asahi Tec Corporation Installation de coulée, procédé pour l'utilisation de l'installation, installation de coulée pour roues véhicules, procédé pour l'utilisation de l'installation et roues véhicules
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216689A1 (de) * 2012-08-27 2014-02-27 Honda Motor Co., Ltd. Verfahren und Vorrichtung zum Pressgießen
DE102013216689B4 (de) * 2012-08-27 2016-03-03 Honda Motor Co., Ltd. Verfahren und Vorrichtung zum Pressgießen

Also Published As

Publication number Publication date
NO981022D0 (no) 1998-03-09
ES2139387T3 (es) 2000-02-01
NO981022L (no) 1998-05-07
ATE185990T1 (de) 1999-11-15
US6105658A (en) 2000-08-22
CA2231406A1 (fr) 1997-03-13
DE59603504D1 (de) 1999-12-02
AU705079B2 (en) 1999-05-13
WO1997009140A1 (fr) 1997-03-13
AU7277796A (en) 1997-03-27
KR970706928A (ko) 1997-12-01
WO1997009137A1 (fr) 1997-03-13
MY115849A (en) 2003-09-30
NO319939B1 (no) 2005-10-03
TW320579B (fr) 1997-11-21
EP0848652A1 (fr) 1998-06-24
CA2231406C (fr) 2002-07-02
DE19533447C1 (de) 1996-12-05
BR9610360A (pt) 1999-12-21

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