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WO1993001910A1 - Procede d'exploitation de machine a coulee sous pression - Google Patents

Procede d'exploitation de machine a coulee sous pression Download PDF

Info

Publication number
WO1993001910A1
WO1993001910A1 PCT/EP1992/001573 EP9201573W WO9301910A1 WO 1993001910 A1 WO1993001910 A1 WO 1993001910A1 EP 9201573 W EP9201573 W EP 9201573W WO 9301910 A1 WO9301910 A1 WO 9301910A1
Authority
WO
WIPO (PCT)
Prior art keywords
filling chamber
filling
suction
molten metal
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.)
Ceased
Application number
PCT/EP1992/001573
Other languages
German (de)
English (en)
Inventor
Karl HÜBSER
Peter Wanke
Klaus Heck
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Priority to EP92915506A priority Critical patent/EP0594727B1/fr
Priority to JP5502564A priority patent/JPH06509512A/ja
Priority to DE59208299T priority patent/DE59208299D1/de
Publication of WO1993001910A1 publication Critical patent/WO1993001910A1/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
    • B22D17/20—Accessories: Details
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations

Definitions

  • the invention relates to a method for operating a die casting machine with the further features according to the preamble of patent claim 1.
  • a casting mold composed of mold halves contains a mold cavity corresponding to the contour of the later workpiece, the metal melt being introduced into the mold cavity via a filling chamber which is connected to a holding furnace for the melt via a riser or suction pipe .
  • the quantity-metered introduction takes place either in that a certain overpressure is built up in the holding furnace or in that there is a correspondingly dimensioned vacuum in the filling chamber and mold cavity (cf. US Pat. No. 3093871, DE-OS 14 58 151).
  • the invention is therefore based on the object of demonstrating a mode of operation for a die casting machine which makes it possible to drastically reduce the risk of metal melt contamination.
  • the filling chamber and the molten metal filling opening can be cleaned of aluminum residues by rinsing processes and possibly also mechanically.
  • the undocked riser pipe / suction pipe which is open at the top is thus protected against the ingress of contaminants.
  • the associated drawing shows in 1 shows the basic structure of a die casting machine operating according to the vacuum dosing method with the device elements required for operating according to the invention
  • Fig. 2 is an enlarged view of the interface between the filling chamber and suction pipe and
  • FIG 3 shows a schematic representation of a multi-function valve attached to the filling chamber.
  • FIG. 1 shows a die casting machine 1 with two mold halves 2, 3, a mold cavity 5 determining the contour of the later workpiece being incorporated in the area of a parting plane 4.
  • the molten metal 6 located in a holding furnace 7 passes through a suction pipe 8 into a filling chamber 9, which leads to the mold cavity 5.
  • the invention can of course also be used when the metal melt 6 is introduced into the filling chamber 9 in a different manner (e.g. excess pressure in the holding furnace 7).
  • a different manner e.g. excess pressure in the holding furnace 7.
  • a pouring piston 14 which is guided in the filling chamber in an axially movable manner, sets in is driven by a piston rod 13 via means not shown in detail, in motion (arrow 12) until the remaining filling chamber volume is completely filled with molten metal 6. Thereafter, this is introduced into the mold cavity 5 in a "shot” in a second movement phase of the casting piston 14.
  • a multi-function valve 15 is attached to the filling chamber 9, which valve is supplied via a supply line 16 with a switching valve 17 and branch lines 16.1, 16.2 with a tank volume 18 filled with dry air and with an inert gas (e.g. Argon, nitrogen) filled second tank volume 19 is connected.
  • the branching is formed by a four-way switching valve 20, which also has a connection 23 which is connected to the environment (atmospheric pressure).
  • the filling chamber 9 is provided at this point with a flat surface 28 against which an end flange 29 of the suction pipe 8 can be brought into contact.
  • a compression spring 33 which is supported between the flange 29 and an upper cover plate 30 of the holding furnace 7 and a corrugated tube 34 surrounding it cause the suction tube 8 can be supported resiliently on the flat surface 28 on the filling chamber side and a suction tube passage opening 31 of the cover plate 30 is sealed to the outside.
  • FIG. 3 shows the multi-function valve 15, which is inserted diametrically to the filling bush 27 (same longitudinal axis 26) and thus also diametrically to the connection point of the suction pipe 8 shown in a thin full line into the wall of the filling chamber 9.
  • the multi-function valve 15 has a housing 38 with a through bore 39, in which an elongated plunger 40 is guided, which is connected via an upper end connection 41 to a piston rod 42 of a hydraulic or pneumatic cylinder 43.
  • valve housing 38 facing the filling chamber 9 is provided with a recess 45 with a larger cross section, which receives a tappet head 46.
  • the valve housing 38 also has an annular groove 47 above the recess 45, into which the supply line 16 connected to the tank volumes 18, 19 opens.
  • a sealing element 48 which surrounds the tappet 40 and is inserted in the valve housing 38 ensures closure to the outside.
  • An end face 49 of the plunger head 46 is provided with a switching element (for example a thermal sensor or contact switch) 50 provided, the connecting line 53 is guided within the plunger 40. If the plunger head 46 is thus in a central position shown in broken lines, it is thus possible to check the fill level of the molten metal 6. If, on the other hand, it is in the position shown in broken lines, in which it protrudes into the filling bushing 27, the filling bushing 27 can thereby be cleaned (the suction pipe 8 is undocked at this moment).
  • a switching element for example a thermal sensor or contact switch
  • the sealing of the filling bushing 27 to the outside could also be effected by means of a slide which can be moved in between the undocked suction pipe 8 and the filling chamber 9 and which could also be used for cleaning the filling chamber-side flat surface 28 and the suction pipe-side flange 29 .
  • the multi-function valve 15 is also provided with an additional pressure switch 51 with a connecting line 52 (e.g. arranged in the annular groove 47), the following functions can be achieved:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

Selon un procédé d'exploitation d'une machine à coulée sous pression, le métal fondu (6) contenu dans un réservoir (7) parvient en quantités dosées dans une chambre de remplissage (9) par un tuyau d'aspiration ou ascendant (8) et y est pressé par un piston d'injection (14) dans une cavité de moulage (5) qui détermine le contour de la pièce moulée définitive. Après un nombre prédéterminable de cycles de coulée, de préférence après chaque cycle de coulée, le tuyau d'aspiration ou ascendant (8) est déconnecté de la chambre de remplissage (9), puis l'ouverture de chargement (25) de métal fondu est nettoyée et la chambre de remplissage (9) et la cavité de moulage (5) sont rincées par des gaz à des fins de nettoyage et/ou d'enduction avec un lubrifiant par des organes (15) agencés dans la zone de l'ouverture (25) de chargement avec du métal fondu de la chambre de remplissage (9). Ces procédés cycliques de nettoyage diminuent fortement le risque d'impuretés dans le métal fondu réduisant la qualité et l'usinabilité ultérieure des pièces coulées finies.
PCT/EP1992/001573 1991-07-16 1992-07-11 Procede d'exploitation de machine a coulee sous pression Ceased WO1993001910A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92915506A EP0594727B1 (fr) 1991-07-16 1992-07-11 Procede d'exploitation de machine a coulee sous pression et la machine a coulee
JP5502564A JPH06509512A (ja) 1991-07-16 1992-07-11 ダイカスト機の操作方法
DE59208299T DE59208299D1 (de) 1991-07-16 1992-07-11 Verfahren zum betreiben einer druckgiessmaschine und die druckgiessmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4123464.2 1991-07-16
DE4123464A DE4123464A1 (de) 1991-07-16 1991-07-16 Verfahren zum betreiben einer druckgiessmaschine

Publications (1)

Publication Number Publication Date
WO1993001910A1 true WO1993001910A1 (fr) 1993-02-04

Family

ID=6436225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/001573 Ceased WO1993001910A1 (fr) 1991-07-16 1992-07-11 Procede d'exploitation de machine a coulee sous pression

Country Status (4)

Country Link
EP (1) EP0594727B1 (fr)
JP (1) JPH06509512A (fr)
DE (2) DE4123464A1 (fr)
WO (1) WO1993001910A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1153680A1 (fr) * 2000-05-09 2001-11-14 Fuchs Lubritech Gmbh Procédé et dispositif pour alimenter un agent de démoulage dans un appareil à coulée sous pression
US6460596B1 (en) 1999-10-21 2002-10-08 The Japan Steel Works, Ltd. Method of coating powder lubricant in metallic injection molding machine and die used of metallic injection molding
US7071383B2 (en) 1992-03-19 2006-07-04 E. I. Du Pont De Nemours And Company Chimeric genes and methods for increasing the lysine and threonine content of the seeds of plants

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645104B4 (de) * 1996-10-31 2007-12-20 Pfeiffer Vacuum Gmbh Verfahren zur Durchführung eines Prozesses in einem mit Unterdruck beaufschlagten Prozessraum
DE19802342C1 (de) * 1998-01-22 1999-03-04 Gustav Ohnsmann Einrichtung zur Metallbeschickung waage- und senkrechter Kaltkammer - Druckgießmaschinen und Verfahren
DE10006814B4 (de) * 2000-02-15 2007-09-06 Bühler Druckguss AG Verfahren und Vorrichtung zum Befüllen einer Giesskammer
DE20019843U1 (de) 2000-11-22 2001-03-22 Ritter Aluminium Giesserei GmbH, 73240 Wendlingen Gießkammer für Vakuum-Druckgießmaschinen
DE102004057324A1 (de) * 2004-11-27 2006-06-01 Pfeiffer Vacuum Gmbh Vakuumdruckgussverfahren
KR101517571B1 (ko) * 2014-06-26 2015-05-06 고동근 진공환경에서 금속을 용해하고 성형하는 장치 및 방법
DE102015115604A1 (de) * 2015-04-21 2016-10-27 Smetan Engineering Gmbh Vorrichtung zur Herstellung von Gussteilen
CN113059142A (zh) * 2021-03-29 2021-07-02 刘华 一种立式的高压铸造机
DE102023100621A1 (de) * 2023-01-12 2024-07-18 Thomas Ninkel Vorrichtung zum Schmelze-Dosieren an einer Druckgießmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955335A (en) * 1958-01-31 1960-10-11 David M Morgenstern Vacuum feeding and degasifying means for die casting apparatus
DE1252373B (de) * 1964-05-11 1967-10-19 Amsted Industries Incorporated, Chicago 111 (V St A) Niederdruckgießemnchtung und Verfahren zum Betrieb einer solchen
US4088178A (en) * 1977-02-03 1978-05-09 Ube Industries, Ltd. Vertical die casting machines
GB1596826A (en) * 1977-03-01 1981-09-03 Renault Equipment for lowpressure casting
US4502524A (en) * 1982-05-28 1985-03-05 The Japan Steel Works, Ltd. Process and apparatus for the production of a metallic laminar composite material
EP0226830A2 (fr) * 1985-11-26 1987-07-01 Akio Nakano Installation d'injection dans une machine à couler sous pression à chambre chaude

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191522B (de) * 1960-07-15 1965-04-22 British Oxygen Co Ltd Druckgiessmaschine mit einer Einrichtung zum gleichzeitigen Evakuieren des Formhohlraumes und der Chargierkammer
ATE55295T1 (de) * 1987-04-07 1990-08-15 Mueller Weingarten Maschf Vorrichtung zum befestigen eines saugrohres an der giesskammer einer vakuum-druckgiessmaschine.
DE4003095A1 (de) * 1990-02-02 1991-08-08 Bayerische Motoren Werke Ag Druckgussanlage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955335A (en) * 1958-01-31 1960-10-11 David M Morgenstern Vacuum feeding and degasifying means for die casting apparatus
DE1252373B (de) * 1964-05-11 1967-10-19 Amsted Industries Incorporated, Chicago 111 (V St A) Niederdruckgießemnchtung und Verfahren zum Betrieb einer solchen
US4088178A (en) * 1977-02-03 1978-05-09 Ube Industries, Ltd. Vertical die casting machines
GB1596826A (en) * 1977-03-01 1981-09-03 Renault Equipment for lowpressure casting
US4502524A (en) * 1982-05-28 1985-03-05 The Japan Steel Works, Ltd. Process and apparatus for the production of a metallic laminar composite material
EP0226830A2 (fr) * 1985-11-26 1987-07-01 Akio Nakano Installation d'injection dans une machine à couler sous pression à chambre chaude

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7071383B2 (en) 1992-03-19 2006-07-04 E. I. Du Pont De Nemours And Company Chimeric genes and methods for increasing the lysine and threonine content of the seeds of plants
US6460596B1 (en) 1999-10-21 2002-10-08 The Japan Steel Works, Ltd. Method of coating powder lubricant in metallic injection molding machine and die used of metallic injection molding
DE10052130C2 (de) * 1999-10-21 2002-11-14 Japan Steel Works Ltd Kokille zum Metallspritzgießen und Verfahren zum Betreiben einer Metallspritzgießvorrichtung
EP1153680A1 (fr) * 2000-05-09 2001-11-14 Fuchs Lubritech Gmbh Procédé et dispositif pour alimenter un agent de démoulage dans un appareil à coulée sous pression

Also Published As

Publication number Publication date
DE59208299D1 (de) 1997-05-07
JPH06509512A (ja) 1994-10-27
DE4123464A1 (de) 1993-01-21
EP0594727B1 (fr) 1997-04-02
EP0594727A1 (fr) 1994-05-04

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