EP0270466B1 - Druckgiessmaschine für metallische Gussstücke, die Keramikfasern enthalten können - Google Patents

Druckgiessmaschine für metallische Gussstücke, die Keramikfasern enthalten können Download PDF

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Publication number
EP0270466B1
EP0270466B1 EP87420297A EP87420297A EP0270466B1 EP 0270466 B1 EP0270466 B1 EP 0270466B1 EP 87420297 A EP87420297 A EP 87420297A EP 87420297 A EP87420297 A EP 87420297A EP 0270466 B1 EP0270466 B1 EP 0270466B1
Authority
EP
European Patent Office
Prior art keywords
container
piston
metal
pressure
orifice
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
Application number
EP87420297A
Other languages
English (en)
French (fr)
Other versions
EP0270466A1 (de
Inventor
Jean Charbonnier
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.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
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 Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to AT87420297T priority Critical patent/ATE46640T1/de
Publication of EP0270466A1 publication Critical patent/EP0270466A1/de
Application granted granted Critical
Publication of EP0270466B1 publication Critical patent/EP0270466B1/de
Expired 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
    • B22D17/20—Accessories: Details
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • 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
    • B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • B22D17/04—Plunger machines
    • 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
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B22D17/12—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with vertical press motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal

Definitions

  • the present invention relates to a machine for the pressure molding of metal parts, in particular of aluminum and lithium alloys or of magnesium alloys, said alloys possibly containing ceramic fibers, according to the preamble of claim 1.
  • US-A 3,058,179 had already, for an entirely different purpose, produced a machine which partially addresses the interaction problem.
  • the container is here supplied, sheltered from air, by means of a piping plunging into a sealed container containing the metal to be molded in the liquid state and provided at its upper part with an inlet for pressurized inert gas by means of which an overpressure is created on the surface of the liquid to send the latter into the container.
  • the air contained in the cylinder where the piston slides and which surrounds the piston rod is found to be put in relation with the liquid supply piping to the container.
  • the metal contained in the piping begins to flow back towards the container, it sucks this air and is thus oxidized.
  • inert gas is blown under a pressure Pi into the piping.
  • this gas can spread into the mold cavity thereby purging it of the air it contains.
  • This gas then fills the entire volume bonded between the metal and its pressure expels the air which comes from the piston cylinder.
  • the length of the piston must be greater than the height of the orifice both in relation to the piping with the container so that the metal is pushed back before the cylinder is put in relation to the piping. Subsequently, when the piston goes down and unmask the orifice, the gas blown then under low pressure will enter the container and prevent any entry of air from the mold which is then opened and this until the value of P 2 which has been reduced to 0 to facilitate the return of the metal to the container is increased to start a new molding cycle.
  • a kind of pocket placed on top of the piping and inside which a gas blanket is kept to prevent the entry of metal into the system. insufflation.
  • This pocket is equipped with a probe which detects an abnormal reduction in the height of the gas mattress and then commands the opening of a special valve responsible for ensuring the additional pressure necessary to maintain the desired height.
  • the value of P 2 must be at least equal to the value of the metallostatic pressure exerted by the metal when it fills the imprint. As for the difference Pi - P 2 it is of the order of 0.01 MPa.
  • FIG. 1 a distinction is made between the fixed lower plate 1 and the mobile upper plate 2 of a vertical die-casting machine. Between these plates is placed the mold 3 having an imprint 4.
  • the lower plate is equipped with an injection device constituted by the container 5 in which slides the piston 6 supported by the rod 7 driven by a reciprocating movement and comes under the effect of the jack 18.
  • Said container is connected via the orifice 8 to the pipe 9 which plunges into the bath 10 of metal to be molded contained in the crucible 11 placed in the sealed container 12 which can be pressurized via the gas inlet 13 in order to send the metal through the piping 9 to the container 5.
  • an inert gas is blown into the pipeline 14 at a point 15 in the piping 9 according to a pressure linked to the pressure prevailing in the container as a function of the position of the piston detected by the probe 17, pressure which can be controlled by the differential pressure regulator 16.
  • Figure 2 we find the elements of Figure 1 namely the container 5, the piston 6, the rod 7, the orifice 8, the piping 9, the metal bath 10, the crucible 11, the container 12, l gas inlet 13, the pipe 14, the blowing point 15, the pressure gauge 16 and the probe 17.
  • the molding cycle is then restarted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Braking Arrangements (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (4)

1. Kühlkammer-Druckgießmaschine für die Herstellung von Metallteilen, die evtl. Keramikfasern enthalten, gebildet aus einer festen unteren Platte (1) und einer beweglichen oberen Platte (2) zwischen denen eine Form (3) angeordnet ist, die einen Abdruck bzw. eine Vertiefung (4) des zu gießenden Teiles aufweist, wobei die untere Platte mit einer Einspritzvorrichtung ausgerüstet ist, die durch einen Container oder Behälter (5) gebildet ist in dem ein Kolben (6) gleitet, der von einer Stange (7) getragen wird, wobei der Behälter durch die Offnung (8) mit einer Rohranordnung (9) verbunden ist, die in ein Flüssigmetallbad (10) zum Vergießen taucht, das in einem dichten Behälter (12) enthalten ist, wobei der Behälter unter einen Druck P2 mittels einer Gaseinführung (13) gesetzt werden kann, um das Metall in Richtung auf den Container zu befördern, dadurch gekennzeichnet, daß mit dem Ziel ein jegliches Abgießen des flüssigen Metalls auf die Kolbenstange und einen jeglichen Eintritt von Luft in die Rohranordnung (9) zu verhindern, die Rohranordnung in einem Punkt (15) seiner Seitenwand in der Nähe des Containers (5) mit einer Zuführung von Inertgas (14) und einer Tasche ausgerüstet ist, die unter einem Druck P1 steht, der von der Stellung des Kolbens (6) und des Druckes P2 abhängt.
2. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß P2 größer als P1 während der Metallzuführperiode zum Container und zur Hohlform bzw. Vertiefung ist, P1 größer wird als P2 in dem Moment, wo der Kolben in seiner austeigenden Bewegung die Öffnung (8) überdeckt.
3. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß der Wert P1 in dem Moment reduziert wird, wo der Kolben in seiner absteigenden Bewegung die Öffnung (8) freigibt und das bis P2 ansteigt.
4. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Unterschiede der Drücke P1 und P2 mit Hilfe eines Differenzialmanometers (16) erhalten werden, das durch einen Fühler (17) gesteuert wird.
EP87420297A 1986-10-31 1987-10-30 Druckgiessmaschine für metallische Gussstücke, die Keramikfasern enthalten können Expired EP0270466B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420297T ATE46640T1 (de) 1986-10-31 1987-10-30 Druckgiessmaschine fuer metallische gussstuecke, die keramikfasern enthalten koennen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615437A FR2605913A1 (fr) 1986-10-31 1986-10-31 Procede de moulage sous pression de pieces metalliques contenant eventuellement des fibres en ceramiques
FR8615437 1986-10-31

Publications (2)

Publication Number Publication Date
EP0270466A1 EP0270466A1 (de) 1988-06-08
EP0270466B1 true EP0270466B1 (de) 1989-09-27

Family

ID=9340563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420297A Expired EP0270466B1 (de) 1986-10-31 1987-10-30 Druckgiessmaschine für metallische Gussstücke, die Keramikfasern enthalten können

Country Status (21)

Country Link
US (1) US4777998A (de)
EP (1) EP0270466B1 (de)
JP (1) JPS63115664A (de)
KR (1) KR910009368B1 (de)
AR (1) AR241762A1 (de)
AT (1) ATE46640T1 (de)
AU (1) AU586786B2 (de)
BR (1) BR8705803A (de)
CA (1) CA1302045C (de)
DE (1) DE3760607D1 (de)
DK (1) DK160467C (de)
ES (1) ES2010716B3 (de)
FI (1) FI82620C (de)
FR (1) FR2605913A1 (de)
GR (1) GR3000173T3 (de)
IE (1) IE62774B1 (de)
IS (1) IS1397B6 (de)
MX (1) MX169523B (de)
NO (1) NO167635C (de)
PT (1) PT86026B (de)
SU (1) SU1637659A3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812068C2 (de) * 1998-03-11 2000-09-21 Gut Gieserei Umwelt Technik Gm Gießvorrichtung mit Nachverdichtung
DE19943153C1 (de) * 1998-03-19 2001-01-25 Gut Gieserei Umwelt Technik Gm Gießvorrichtung mit Nachverdichtung

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642686B1 (fr) * 1989-01-16 1991-05-17 Creusot Loire Dispositif et procede d'alimentation en metal liquide pour la coulee sous pression de produits metalliques
US5085830A (en) * 1989-03-24 1992-02-04 Comalco Aluminum Limited Process for making aluminum-lithium alloys of high toughness
US5570502A (en) * 1991-04-08 1996-11-05 Aluminum Company Of America Fabricating metal matrix composites containing electrical insulators
US5616421A (en) * 1991-04-08 1997-04-01 Aluminum Company Of America Metal matrix composites containing electrical insulators
US5259436A (en) * 1991-04-08 1993-11-09 Aluminum Company Of America Fabrication of metal matrix composites by vacuum die casting
US5775403A (en) * 1991-04-08 1998-07-07 Aluminum Company Of America Incorporating partially sintered preforms in metal matrix composites
JPH0623510A (ja) * 1992-05-26 1994-02-01 Tanabe Kogyo Kk 不活性ガス給湯管給気給湯方法と装置と不活性ガス濃厚雰囲気樋と不活性ガス雰囲気ボックス
US5533257A (en) * 1994-05-24 1996-07-09 Motorola, Inc. Method for forming a heat dissipation apparatus
DK77694A (da) * 1994-06-29 1995-12-30 Dansk Ind Syndikat Fremgangsmåde og indretning til ved udstøbning mod tyngdekraften af støbeforme, især vådsandforme, med navnlig letoxiderbare metaller eller metallegeringer af afslutte støbeprocessen
AU4870497A (en) * 1997-11-07 1999-05-31 Ab Jafs Export Oy Holimesy Method and apparatus for melting non-ferrous metals, especially magnesium
DE19802342C1 (de) * 1998-01-22 1999-03-04 Gustav Ohnsmann Einrichtung zur Metallbeschickung waage- und senkrechter Kaltkammer - Druckgießmaschinen und Verfahren
DE10061026A1 (de) * 2000-12-08 2002-06-13 Bayerische Motoren Werke Ag Metallgießverfahren und -vorrichtung
US20090160106A1 (en) * 2004-10-12 2009-06-25 Efficient Manufacturing System Integration Apparatus and method for simultaneous usage of multiple die casting tools
CN104985159B (zh) * 2015-07-03 2017-06-13 洛阳西格马炉业股份有限公司 一种生产高熔点金属包覆陶瓷碎片材料的压铸装置及方法
CN106694838B (zh) * 2016-11-10 2018-07-03 重庆代发铸造有限公司 防气泡铸造装置
CN108994278B (zh) * 2018-09-19 2020-05-12 新成业机铸制品(深圳)有限公司 一种定量精准的压力铸造设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058179A (en) * 1959-04-20 1962-10-16 Cannon Earl Die casting machine
DE1458062B2 (de) * 1964-11-23 1970-06-04 Göhring, Dipl.-Ing. Karl, 7000 Stuttgart-Degerloch Beschickungsvorrichtung für Gießmaschinen
FR2270037B1 (de) * 1974-05-10 1979-04-06 Pechiney Aluminium
EP0017331B1 (de) * 1979-03-21 1983-06-15 Promagco Limited Warmkammer-Druckgiessen
JPS5797860A (en) * 1980-12-10 1982-06-17 Hitachi Ltd Method and device for casting
US4633930A (en) * 1985-06-11 1987-01-06 The Dow Chemical Company Molten metal shot size and delivery mechanism for continuous casting operations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812068C2 (de) * 1998-03-11 2000-09-21 Gut Gieserei Umwelt Technik Gm Gießvorrichtung mit Nachverdichtung
DE19943153C1 (de) * 1998-03-19 2001-01-25 Gut Gieserei Umwelt Technik Gm Gießvorrichtung mit Nachverdichtung

Also Published As

Publication number Publication date
JPS63115664A (ja) 1988-05-20
KR910009368B1 (ko) 1991-11-14
DK160467B (da) 1991-03-18
ES2010716B3 (es) 1989-12-01
DK160467C (da) 1991-09-30
FI82620B (fi) 1990-12-31
PT86026B (pt) 1993-08-31
BR8705803A (pt) 1988-05-31
DK566687D0 (da) 1987-10-29
AU586786B2 (en) 1989-07-20
IS1397B6 (is) 1989-10-31
EP0270466A1 (de) 1988-06-08
NO167635B (no) 1991-08-19
PT86026A (pt) 1988-11-30
FI874796A (fi) 1988-05-01
SU1637659A3 (ru) 1991-03-23
CA1302045C (fr) 1992-06-02
JPH0230789B2 (de) 1990-07-09
IE872921L (en) 1988-04-30
DE3760607D1 (en) 1989-11-02
MX169523B (es) 1993-07-09
IS3275A7 (is) 1988-05-02
FR2605913A1 (fr) 1988-05-06
KR880004876A (ko) 1988-06-27
DK566687A (da) 1988-05-01
IE62774B1 (en) 1995-02-22
US4777998A (en) 1988-10-18
ATE46640T1 (de) 1989-10-15
AR241762A1 (es) 1992-12-30
NO167635C (no) 1991-11-27
AU8045687A (en) 1988-05-05
FI82620C (fi) 1991-04-10
NO874507D0 (no) 1987-10-29
GR3000173T3 (en) 1990-12-31
FI874796A0 (fi) 1987-10-30
NO874507L (no) 1988-05-02

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