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EP0413885B1 - Procédé de la coulée en coquille à basse pression pour la coulée de pièces moulées en alliages non-ferreux - Google Patents

Procédé de la coulée en coquille à basse pression pour la coulée de pièces moulées en alliages non-ferreux Download PDF

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Publication number
EP0413885B1
EP0413885B1 EP90101401A EP90101401A EP0413885B1 EP 0413885 B1 EP0413885 B1 EP 0413885B1 EP 90101401 A EP90101401 A EP 90101401A EP 90101401 A EP90101401 A EP 90101401A EP 0413885 B1 EP0413885 B1 EP 0413885B1
Authority
EP
European Patent Office
Prior art keywords
casting
mould
mold
sprue
cast
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
EP90101401A
Other languages
German (de)
English (en)
Other versions
EP0413885A1 (fr
Inventor
Georg Bilz
Hans Lämmermann
Alfred Dobner
Klaus Dipl.-Ing. Sterner
Klaus Riess
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.)
Novelis Deutschland GmbH
Original Assignee
Alcan Deutschland 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 Alcan Deutschland GmbH filed Critical Alcan Deutschland GmbH
Priority to AT90101401T priority Critical patent/ATE88932T1/de
Publication of EP0413885A1 publication Critical patent/EP0413885A1/fr
Application granted granted Critical
Publication of EP0413885B1 publication Critical patent/EP0413885B1/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
    • 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

Definitions

  • the invention relates to a low-pressure mold casting process for casting metal castings, such as cylinder heads or engine blocks of internal combustion engines or the like, which castings in some areas have predominantly thinner walls than in their other areas, in which process by means of gas pressure through liquid metal from a melting tank a riser pipe is pressed into a mold.
  • the mold is introduced from below and a smooth metal flow is given in the mold of rising metal, the casting speed being adaptable in each phase to the desired mold filling.
  • the casting molds are created in the known low-pressure casting process so that the thickest wall parts of the casting in the vicinity of the sprue, the thin-walled areas away from it.
  • the invention has for its object to avoid these disadvantages of the known low-pressure mold casting process.
  • This is achieved according to the invention in that, in this casting process, the mold is arranged in such a way that its mold cavities, which form the predominantly thicker wall of the casting, are close to the gate and their mold cavities, which form the predominantly thinner wall, are close to the gate, the liquid metal lying on or near the gate Area of the mold is introduced into the mold cavities forming the thinner wall.
  • the mold cavities remote from the gate will be at the top and the mold cavities near the gate will be at the bottom.
  • the metal fed in is cooled in these mold areas when it rises within the mold, so that it is at relatively low temperatures in the molds above it.
  • the thicker wall of the casting forming larger mold cavities comes without running the risk that any mold cavities can not be filled sufficiently.
  • the heating of the thinner mold cross sections through which the entire metal volume flows prevents premature freezing of the mold cavities close to the gate.
  • the liquid metal is expediently introduced via a bottom run at several sprue points to the region of the mold close to the gate into the mold cavities forming the thinner wall of the cast part.
  • the mold cavities close to the gate are heated by the flowing metal to such an extent that, despite the small cross-sections, they are prevented from freezing for a relatively long time and, at least in some areas, the mold can be replenished during a holding pressure phase.
  • this entry cross section will generally be solidified in front of the distant regions of the casting.
  • the low-pressure casting furnace is not rigidly coupled to a casting mold, but rather operates several casting molds in a cyclical alternation. The faster the inlet cross section of the casting mold solidifies, the sooner the riser pipe of the low-pressure furnace can be uncoupled from the casting mold and connected to another casting mold for the next casting cycle.
  • the mold 1 shown in cross section in FIG. 1 is used to cast a cylinder head which has a thicker wall on its one combustion chamber-delimiting side and in its adjoining area than on its opposite side and in the adjoining area.
  • the combustion chamber of this cylinder head is limited by the thicker walls which are formed or surrounded in the mold by the upper, obliquely extending, wider mold cavities 5 in FIG. 1.
  • This mold is connected with several sprue points 2 via a bottom run 3 to the end 4 of a riser pipe of a low-pressure mold casting machine, not shown, in such a way that its mold cavities 5 forming the thicker wall of the cylinder head are at the top and their mold cavities 6 forming the thinner wall of the cylinder head are at the bottom .
  • the molten cast metal is first introduced into the lower, mostly smaller or slimmer mold cavities 6 via the bottom run 3. Through these mold cavities 6, the introduced metal rises essentially turbulence-free and calmly in the mold upwards into the upper mostly larger or thicker mold cavities 5 and into the feeder 7 placed on the mold, which serves to make up the upper one Mold cavities 5 can be useful.
  • the make-up of the lower mold cavities 6 takes place via the riser pipe and the bottom run from the sprue side.
  • the mold 11 shown in cross section in FIG. 2 is used to cast a cylinder block which generally has a thinner wall on its side delimiting the crankshaft space 18 and in its adjoining areas than in the areas above it.
  • This mold is also connected with several sprue points 12 via a bottom run 13 to the end 14 of a riser pipe of a low-pressure mold casting machine, not shown, in such a way that its mold cavities 15 forming the thicker wall of the cylinder block are at the top and their mold cavities forming the thinner wall of the cylinder block 16 are below.
  • the molten casting metal is first introduced into the bottom, mostly smaller or slimmer mold cavities 16 via the bottom run 13, through which mold cavities the metal is essentially turbulence-free and quiet in the mold upwards into the upper, mostly larger mold cavities 5 and into the mounted on the mold feeder 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Casting Devices For Molds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Glass Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Continuous Casting (AREA)

Claims (6)

  1. Procédé de coulée en coquille à basse pression pour la coulée de pièces en fonte de métal telles que des culasses ou des blocs-moteur de moteur à combustion interne ou analogues, lesdites pièces de fonte ayant dans certaines régions une paroi en majeure partie plus mince que dans ses autres régions, du métal liquide étant refoulé suivant ce procédé, par une pression gazeuse, d'un creuset par un tube ascendant dans un moule (1), caractérisé en ce que le moule (1) est disposé de manière que la coulée y soit effectuée de façon que la paroi en majeure partie épaisse de la pièce de fonte soit distante de l'entrée et que la paroi en majeure partie mince soit proche de l'entrée, le métal liquide étant dirigé sur ou à proximité de la partie du moule qui est proche de l'entrée et dans les cavités (6, 16) du moule qui forment la paroi en majeure partie mince.
  2. Procédé selon la revendication 1, caractérisé en ce que le métal liquide est dirigé par un canal (3, 2) de coulée au sol sur plusieurs entrées vers la partie du moule (1) qui est proche de l'entrée et dans les cavités (6, 16) qui forment la paroi mince de la pièce de fonte.
  3. Procédé selon la revendication 1, caractérisé en ce que des masselottes (7, 17) rapportées sur le moule procèdent à une post-alimentation en métal liquide des cavités (5;, 15) formant la paroi épaisse de la pièce de fonte, en plusieurs emplacements situés sur le côté du moule (1) qui est éloigné de l'entrée.
  4. Procédé de coulée de culasses selon la revendication 1, caractérisé en ce que les culasses sont coulées dans le moule en ayant leurs côtés voisins de la chambre de combustion qui est tourné vers le haut.
  5. Procédé de coulée de blocs-cylindres selon la revendication 1, caractérisé en ce que les blocs-cylindres sont coulés dans le moule en ayant le carter de vilebrequin tourné vers le bas.
  6. Procédé selon la revendication 1, caractérisé en ce que le four de coulée à basse pression est raccordé au moule à chaque fois uniquement pour un cycle de coulée et sa communication avec le moule est coupée après solidification de la ou des section(s) d'entrée du moule.
EP90101401A 1989-07-26 1990-01-24 Procédé de la coulée en coquille à basse pression pour la coulée de pièces moulées en alliages non-ferreux Expired - Lifetime EP0413885B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90101401T ATE88932T1 (de) 1989-07-26 1990-01-24 Niederdruck-kokillen-giessverfahren zum giessen von metallgussteilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3924742A DE3924742A1 (de) 1989-07-26 1989-07-26 Niederdruck-kokillen-giessverfahren zum giessen von metallgussteilen
DE3924742 1989-07-26

Publications (2)

Publication Number Publication Date
EP0413885A1 EP0413885A1 (fr) 1991-02-27
EP0413885B1 true EP0413885B1 (fr) 1993-05-05

Family

ID=6385893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101401A Expired - Lifetime EP0413885B1 (fr) 1989-07-26 1990-01-24 Procédé de la coulée en coquille à basse pression pour la coulée de pièces moulées en alliages non-ferreux

Country Status (15)

Country Link
US (1) US5381851A (fr)
EP (1) EP0413885B1 (fr)
JP (1) JPH04506935A (fr)
KR (1) KR920700810A (fr)
AT (1) ATE88932T1 (fr)
AU (1) AU6073990A (fr)
BR (1) BR9007555A (fr)
CA (1) CA2053867A1 (fr)
DD (1) DD295570A5 (fr)
DE (2) DE3924742A1 (fr)
DK (1) DK0413885T3 (fr)
ES (1) ES2040512T3 (fr)
PT (1) PT94822A (fr)
TR (1) TR24596A (fr)
WO (1) WO1991001832A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0494209A4 (en) * 1989-09-27 1993-03-10 Rhone-Poulenc Rorer Sa Cyclic peroxyacetal lactone, lactol and ether compounds
FR2684029B1 (fr) * 1991-11-27 1994-03-04 Creusot Loire Industrie Plaque support perfectionnee d'une demi-coquille de masselotte de moule de coulee sous pression.
DE19520118C2 (de) * 1995-06-01 1999-02-11 Porsche Ag Niederdruckgußvorrichtung, insbesondere zum Herstellen von einteiligen Rädern uund Felgensternen mit Hohlspeichen für Kraftfahrzeuge
DE19803866A1 (de) * 1998-01-31 1999-08-05 Volkswagen Ag Gießform und Verfahren zum Herstellen von Gußstücken
KR20020044028A (ko) * 2000-12-05 2002-06-14 이계안 차량용 엔진의 실린더 헤드 저압 주조금형
US6615899B1 (en) * 2002-07-12 2003-09-09 Honeywell International Inc. Method of casting a metal article having a thinwall
US6857462B2 (en) * 2002-11-25 2005-02-22 Honda Giken Kogyo Kabushiki Kaisha High pressure die cast process
EP2024114B1 (fr) * 2006-04-19 2018-09-19 Howmet Corporation Remplissage séquentiel de moules
US20090065170A1 (en) * 2007-09-11 2009-03-12 Honda Motor Co., Ltd. Die cooling apparatus and method thereof
DE102011056985A1 (de) * 2011-12-23 2013-06-27 Martinrea Honsel Germany Gmbh Gießvorrichtung zum Gießen von Zylinderkurbelgehäusen nach dem Niederdruckverfahren
NO2756167T3 (fr) * 2014-01-29 2018-06-16
US9352384B2 (en) 2014-05-27 2016-05-31 Honda Motor Co., Ltd. Cylinder head casting apparatus and methods
DE102014217438A1 (de) * 2014-09-01 2016-03-03 Volkswagen Aktiengesellschaft Gießform für das Schwerkraftgießen oder Niederdruckgießen von Leichtmetallen und damit ausführbares Kokillengießverfahren
DE102017100805A1 (de) 2017-01-17 2018-07-19 Nemak, S.A.B. De C.V. Gießform zum Gießen von komplex geformten Gussteilen und Verwendung einer solchen Gießform
DE102018211053A1 (de) * 2018-07-04 2020-01-09 Volkswagen Aktiengesellschaft Druckgießform und Druckgießverfahren zur Herstellung eines mit einem hohlzylindrischen Bereich ausgebildeten Druckgussbauteils

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB524677A (en) * 1939-06-17 1940-08-12 Birmingham Aluminium Casting Improved apparatus for casting metal articles
US2794224A (en) * 1953-06-08 1957-06-04 Griffin Wheel Co Method of cooling cast metal preferentially
FR2059966A1 (fr) * 1969-08-06 1971-06-11 Peugeot & Renault
JPS5647262A (en) * 1979-09-25 1981-04-28 Komatsu Ltd Back pressure casting method
JPS5911383B2 (ja) * 1980-09-27 1984-03-15 橋場鉄工株式会社 タイヤ成形加硫用金型の低圧鋳造用鋳型
DE3247129A1 (de) * 1982-12-20 1984-06-20 Institut po Metalosnanie i Technologia na Metalite, Sofija Giessform
FR2559407B1 (fr) * 1984-02-15 1986-09-05 Pont A Mousson Procede de moulage en fonderie et moule pour la coulee de precision sous basse pression, avec modele gazeifiable et moule en sable sans liant
CH662962A5 (en) * 1984-06-09 1987-11-13 Inst Po Metalloznanie I Tekno Casting mould for upward casting
JPH0783926B2 (ja) * 1987-01-23 1995-09-13 マツダ株式会社 鋳造方法
US4875518A (en) * 1987-08-21 1989-10-24 Honda Giken Kogyo Kabushiki Kaisha Method of and apparatus for low-pressure casting of light metal alloy
JPH02241655A (ja) * 1989-03-13 1990-09-26 Honda Motor Co Ltd 中空鋳物の鋳造方法および装置

Also Published As

Publication number Publication date
WO1991001832A1 (fr) 1991-02-21
DK0413885T3 (da) 1993-06-01
DE3924742A1 (de) 1991-01-31
DD295570A5 (de) 1991-11-07
BR9007555A (pt) 1992-06-23
ATE88932T1 (de) 1993-05-15
CA2053867A1 (fr) 1991-01-27
US5381851A (en) 1995-01-17
TR24596A (tr) 1992-01-01
AU6073990A (en) 1991-03-11
ES2040512T3 (es) 1993-10-16
EP0413885A1 (fr) 1991-02-27
PT94822A (pt) 1991-03-20
JPH04506935A (ja) 1992-12-03
KR920700810A (ko) 1992-08-10
DE59001352D1 (de) 1993-06-09

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