EP0055210B1 - Dispositif et procédé de coulée sous basse pression - Google Patents

Dispositif et procédé de coulée sous basse pression Download PDF

Info

Publication number
EP0055210B1
EP0055210B1 EP81810421A EP81810421A EP0055210B1 EP 0055210 B1 EP0055210 B1 EP 0055210B1 EP 81810421 A EP81810421 A EP 81810421A EP 81810421 A EP81810421 A EP 81810421A EP 0055210 B1 EP0055210 B1 EP 0055210B1
Authority
EP
European Patent Office
Prior art keywords
mould
casting
mold
low
pressure
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
EP81810421A
Other languages
German (de)
English (en)
Other versions
EP0055210A1 (fr
Inventor
Hans Lüthy
Eugen Isler
Ewald Meier
Max Zimmermann
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.)
Egro AG
Original Assignee
Egro 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 Egro AG filed Critical Egro AG
Priority to AT81810421T priority Critical patent/ATE11748T1/de
Publication of EP0055210A1 publication Critical patent/EP0055210A1/fr
Application granted granted Critical
Publication of EP0055210B1 publication Critical patent/EP0055210B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D33/00—Equipment for handling moulds
    • 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 casting device according to the preamble of claim 1 and a low-pressure casting method according to the preamble of claim 4.
  • Mold casting has been made by hand for many years. Here, melt is poured directly from a melting furnace into the mold using a ladle, which is carefully set up (pulled up) by hand to prevent voids from forming during the filling process. The mold, cooling and sizing are also done by hand. This work requires a lot of practice and concentration from the founder and poses a considerable safety risk.
  • a low pressure casting device forming the preamble of claim 1 is also known from GB-A-1 180370, which is intended to solve these problems. However, it is very complicated, so that malfunctions and accidents can also occur in this case.
  • the security risk compared to known systems is to be reduced.
  • the construction of the device should be economical and have as few moving components as possible, the economy of the casting process being increased.
  • the advantage of the invention is the fact that the low-pressure casting device is very simple and that the hydraulic and / or pneumatic lifting and swiveling device can operate economically with sufficient safety.
  • the lifting and swiveling device has at least one pneumatic lifting cylinder which is arranged between the undercarriage and the mold and contains two swiveling cylinders acting on a two-armed lever, the two-armed lever with the mold via its mold holders or whose frame is connected.
  • the two-armed lever swivels the mold safely and with simple means during certain phases of the casting process.
  • a locking cylinder is provided on mold holders of the mold halves of the mold, each of which is connected at one end to a mold half. This construction enables easy and safe closing of the mold halves.
  • the low-pressure casting method with the low-pressure casting device according to claim 1 consists in that the mold halves of the mold are rotated by 90 ° in the vertical plane and their cut surfaces are lowered and immersed frontally in a cooling-sizing emulsion of the washing station.
  • the mold is turned into an inclined position, a casting core is inserted, the mold is closed and then turned back into its horizontal position.
  • the inclined position thus facilitates manipulation and enables a casting core to be inserted easily without tools when the mold is open.
  • the riser pipe is heated by the melt by means of heat conduction and heat radiation. It is therefore not necessary to keep the riser pipe at the required temperature, either electrically or with gas.
  • the ceramic of the riser works as a heat store, so that the necessary temperature of the riser is maintained even after a long time.
  • the pouring opening of the mold is pressed directly onto the pouring hole of the crucible. It is therefore not necessary to use additional coupling systems that used to cause leaks and possibly also accidents during the casting process.
  • the running rail is indicated by 1 over a casting unit.
  • This running rail 1 forms a yoke 4 by means of supports (not shown here).
  • a carriage 2 is arranged in a known manner so as to be movable on the running rail 1 in the arrow directions indicated.
  • a suspension 5 is attached consisting of two double T-beams with support plates.
  • a ' lifting cylinder 6 is located vertically in the center of the suspension 5, which is fixed on the one hand to a suspension plate 15 and on the other hand acts on a lowerable support plate 14 by means of a piston.
  • Four vertical column guides 8 arranged concentrically to the lifting cylinder 6 are likewise attached to the carrier plate 14 and the suspension plate 15.
  • a frame 16 In the center of the frame 16 there is an axis of rotation 10 with a two-armed lever 9, on each of which two pivot cylinders 7 act at the ends - in push-pull.
  • a mold 17, designed in a known manner, with a separation point 17 'and a pouring opening 30 is flanged to the mold holder 11 and drawn in dashed lines.
  • the casting device Fig. 1 is shown above its molding station A with the side facing away from the operator. On the left is a cooling and sizing bath 28, on the right a melting pot 25 with double chambers.
  • the casting device is limited in its movement sequence by the running rail 1 with the undercarriage 2 and its supports in the x direction and by a foundation 20 in the z direction. All movements take place in a vertical plane V (board level).
  • the frame 16 with mold 17 is aligned parallel to a horizontal plane H.
  • FIG. 2 shows the casting device in FIG. 1 in a position inclined by approximately 20 ° with respect to the horizontal plane H. This was achieved by controlling the swivel cylinder 7 in opposite directions with corresponding rotation of the two-armed lever 9 and its axis of rotation 10 which is firmly connected to the frame 16.
  • This position serves to insert a casting core 31 into one of the two mold halves 17a and 17b.
  • FIG. Shows further details of the casting device and its suspension.
  • the two running rails 1 shown here are welded at the end to a running rail support 23 with struts 24.
  • the running rail support 23 is also welded to a support plate 21 and a support 22.
  • the whole is detachably connected to a foundation plate 20 fixed in a foundation 18 by anchors 19.
  • control block S which is used for the electro-pneumatic control of all cylinders.
  • the casting device is shown while the mold 17 is being lowered onto a cover plate 33 of the crucible 25.
  • the pouring hole 27 of the crucible 25 and the pouring opening 30 of the mold 17 are shown schematically Flap shown.
  • the lifting cylinder 6 exerts a vertically downward pressing force K, which creates a positive connection between the pouring hole 27 and the pouring opening 30 of the mold. Now the casting process can take place.
  • FIG. 4 The overview of the entire casting unit 32, FIG. 4, in turn shows the foundation plates 20, supports 22, the two slide rail supports 23 and a slide rail 1 shown in simplified form connected, notoriously known cooling and sizing bath 28 with a sizing emulsion 42.
  • One edge - designated 0-0 - of the crucible 25 represents the zero point of the coordinate system in the horizontal plane.
  • the pouring hole 27 is measured from this zero point, also the corresponding control functions of the casting device.
  • the corresponding casting core is inserted by hand when the casting device is inclined (cf. FIG. 2); likewise the casting is removed here when the mold is opened again.
  • a supply line 39 connects the left chamber of the crucible 25 with a compressed air source, not shown, which emits an excess pressure p.
  • a controllable solenoid valve 38 which controls the casting cycle, is interposed.
  • a drain 40 for the residual pressure p ' is closed by a drain valve 41.
  • the solenoid valve 38 is opened, so that the pressure p builds up in the gas space G located above the melt 37, which presses the melt 37 into the second chamber of the crucible 25.
  • the gas space G located on this side is compressed and the melt is pressed into the cavity of the mold 17 through the riser pipe 27 ', the opening 27 and the pouring opening 30.
  • the casting core 31, here a hemisphere, is located half in the mold halves divided by the separation point 17 '.
  • the mold 17 After the mold 17 has been formed, it is moved over the cooling and size bath 28 by means of the casting device.
  • the two mold halves 17a, 17b together with their locking cylinders 12 and the four column guides 13 are rotated 90 ° downward about their pivot axis 16 'by means of two further pneumatic pivoting cylinders (not shown for reasons of clarity).
  • the two mold halves 17a, 17b are immersed in the emulsion 42 consisting of cooling water and size, as in FIG. 6, a.
  • the mold halves 17a, 17b are closed by an electrical switching pulse triggered by the operator; Op. 2.
  • the mold 17 is rotated into its horizontal position and locked; Op. 3rd
  • the pouring opening 30 is positioned over the pouring hole 27 of the crucible 25; Op. 4.
  • the mold 17 is then lowered and pressed onto the pouring hole 27; Op. 5.
  • the melt is pressed into the mold 17 in the manner described above; Op. 6.
  • the mold 17 is lifted vertically from the casting hole 27; Op. 7.
  • This is followed by a horizontal displacement of the casting device up to the molding station A; Op. 8.
  • the casting is here manually removed from the mold 17; Op. 9.
  • the mold 17 is brought to the washing, drying and sizing station W by a further manually triggered switching pulse, the mold halves 17a, 17b are rotated and lowered by 90 ° as mentioned above; Op. 10, 11. After the two mold halves 17a, 17b have dried, the mold is again moved into its starting position; Op. 12.

Claims (8)

1. Dispositif de coulée à basse pression pour des pièces coulées, dans une coquille (17) disposée mobile, comportant un creuset (25) fermé étanche à la pression, qui comporte sur un côté supérieur un trou de coulée (27), le volume de gaz (G) dans le creuset (25) étant raccordé à une canalisation de gaz comprimé, et la coquille (17) étant fixée indirectement sur un rail de roulement (1) par l'intermédiaire d'un chariot (2), caractérisé en ce qu'on intercale entre le chariot (2) et la coquille (17) un dispositif de levage et de basculement (6, 7, 9, 10) hydraulique et/ou pneumatique, lequel dispositif de lavage et de basculement (6, 7, 9, 10) maintient la coquille (17) qui est guidée au-dessus du creuset (25), d'un poste de démoulage (A), et d'un poste de lavage, de séchage et d'enduisage (W) et qu'on prévoit un tuyau ascendant (27') plongeant dans la surface de la charge (37) (fig. 1).
2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de levage et de basculement (6-10/13-15) comporte au moins un vérin de levage pneumatique (6) disposé entre le chariot (2) et la coquille (17), ainsi que deux vérins de basculement (7) agissant sur un levier à deux bras (9), le levier à deux bras (9) étant relié à la coquille (17) par l'intermédiaire des fixations (11) de la coquille ou de son châssis (16) (fig. 1).
3. Dispositif selon la revendication 2, caractérisé en ce qu'on prévoit sur les fixations (11) de coquille des moitiés (17a, 17b) de la coquille (17) respectivement un vérin (12) de fermeture, qui est relié respectivement par une extrémité à une moitié (17a, 17b) de la coquille (fig. 1, fig. 2).
4. Procédé de coulée à basse pression avec le dispositif de coulée à basse pression selon la revendication 1, caractérisé en ce que les moitiés (17a, 17b) de la coquille (17) sont tournées respectivement de 90° dans le plan vertical (V) et sont descendues et plongées avec leurs surfaces de séparation en position frontale dans une émulsion de refroidissement et d'enduisage (42) du poste de lavage (28) (fig. 6).
5. Procédé selon la revendication 4, caractérisé en ce que, dans une première phase du procédé, les moitiés (17a, 17b) de la coquille étant ouvertes, la coquille (17) est tournée dans une position oblique, qu'un noyau de coulée (31) est introduit et que la coquille (17) est fermée et est ramenée dans sa position horizontale (H) (fig. 2) .
6. Procédé selon la revendication 4, caractérisé en ce que le tuyau ascendant (27') n'est chauffé que par la charge (37).
7. Procédé selon la revendication 4, caractérisé en ce que l'ouverture de remplissage (30) de la coquille (17) est pressée directement sur le trou de coulée (27) du creuset (25).
EP81810421A 1980-12-23 1981-10-26 Dispositif et procédé de coulée sous basse pression Expired EP0055210B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81810421T ATE11748T1 (de) 1980-12-23 1981-10-26 Niederdruck-giessvorrichtung und niederdruckgiessverfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH949580 1980-12-23
CH9495/80 1980-12-23

Publications (2)

Publication Number Publication Date
EP0055210A1 EP0055210A1 (fr) 1982-06-30
EP0055210B1 true EP0055210B1 (fr) 1985-02-13

Family

ID=4352600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81810421A Expired EP0055210B1 (fr) 1980-12-23 1981-10-26 Dispositif et procédé de coulée sous basse pression

Country Status (5)

Country Link
US (1) US4425958A (fr)
EP (1) EP0055210B1 (fr)
AT (1) ATE11748T1 (fr)
DE (1) DE3168945D1 (fr)
ES (1) ES8300539A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224047A (ja) * 1982-06-23 1983-12-26 Ishikawajima Harima Heavy Ind Co Ltd 連続鋳造方法および装置
FR2566300B1 (fr) * 1984-06-22 1987-07-03 Inst Po Metalloznanie I Tekno Ligne de production de moulages, particulierement par coulage a contre-pression
FR2615768A1 (fr) * 1987-05-27 1988-12-02 Centre Nat Rech Scient Procede de moulage en coquille, notamment metallique, et dispositif et coquille s'y rapportant
ES2038018T3 (es) * 1989-05-19 1993-07-01 Kwc Ag Dispositivo de fundicion en coquilla de baja presion.
CH690356A5 (de) * 1996-04-19 2000-08-15 Kwc Ag Niederdruck-Kokillengiessanlage.
IT1283090B1 (it) * 1996-06-04 1998-04-07 Imr Srl Impianto di colata in conchiglia a bassa pressione,a potenzialita' incrementata
CH692222A5 (de) * 1996-08-23 2002-03-28 Kwc Ag Niederdruck-Kokillengiessanlage.
EP1270114B1 (fr) * 2001-06-18 2005-12-14 Kwc Ag Machine de coulée sous basse pression et moule
EP1270115B1 (fr) * 2001-06-18 2008-08-06 Kwc Ag Installation pour la coulée en coquille à basse pression et procédé pour sa mise en oeuvre
DE102008037778A1 (de) * 2008-08-14 2010-02-18 Volkswagen Ag Gießvorrichtung und Kokille für eine Gießvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE493900C (de) * 1927-09-25 1930-03-15 Ira Dudley Travis Giessmaschine mit drehbar gelagerten Formhaelften
FR1500877A (fr) * 1966-06-24 1967-11-10 Michelin & Cie Perfectionnements à la fabrication de pièces métalliques par moulage
US3512576A (en) * 1967-11-13 1970-05-19 Heatlock Ltd Diecasting machines
GB1399838A (en) * 1971-07-01 1975-07-02 Dimo Holdings Metal casting apparatus
AT329205B (de) * 1973-10-12 1976-04-26 Gollner Josef Jun Kokillengiessmaschine

Also Published As

Publication number Publication date
DE3168945D1 (en) 1985-03-28
ATE11748T1 (de) 1985-02-15
ES508276A0 (es) 1982-11-01
ES8300539A1 (es) 1982-11-01
US4425958A (en) 1984-01-17
EP0055210A1 (fr) 1982-06-30

Similar Documents

Publication Publication Date Title
DE2451464A1 (de) Vorrichtung und verfahren zum gerichteten erstarren
EP0035675B1 (fr) Procédé et dispositif pour la coulée continue horizontale des métaux liquides, notamment l'acier
EP0055210B1 (fr) Dispositif et procédé de coulée sous basse pression
EP0193948B1 (fr) Dispositif et procédé pour maintenir à température des bains métalliques
DE3108336A1 (de) Giessverfahren und -vorrichtung
DE2926194C1 (de) Giessvorrichtung zur Herstellung metallischer Gussstuecke mit orientierter Struktur
DE3546148A1 (de) Vorrichtung zur herstellung von verbundwerkstoff
DE1916775A1 (de) Verfahren und Anlage zum Behandeln,insbesondere zur Vakuum-Raffination geschmolzener Metalle
DE2361934A1 (de) Speicherform fuer den niederdruckguss
DE2258993A1 (de) Giessmaschine
DE2636665C3 (de) Vorrichtung zum Transport einer Metallschmelze von einem Schmelzbad zu einer Druckgießform
DE4415855C1 (de) Feingußanlage mit Schleuse
DE1942696A1 (de) Einrichtung zum Veredeln von Metallschmelzen unter Vakuum
DE60310081T2 (de) Metallbandstranggiessanlage
EP1050356A1 (fr) Procédé et dispositif pour remplir des moules avec des métaux liquides
DE2056243A1 (en) Bottom feeding casting plant - with melt level statically adjusted
DE3401354A1 (de) Verfahren zum giessen von graugussteilen
DD265994A3 (de) Druckgiessverfahren
DE2704322A1 (de) Niederdruck-druckgussmaschine
DE1458098A1 (de) Vorrichtung und Verfahren zum Pressgiessen von Metall
DE2811546A1 (de) Verfahren und vorrichtung zum kontinuierlichen giessen von stahl
DE2133421A1 (de) Verfahren und vorrichtung zum dauerformguss von metallen und legierungen
DE1945141A1 (de) Einrichtung zum horizontalen Stranggiessen
CH689447A5 (de) Einrichtung zum Zufuehren einer Stahlschmelze in eine Stranggiesskokille.
DE2159586A1 (de) Verfahren und Vorrichtung zum Gießen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19821126

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19850213

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19850213

Ref country code: BE

Effective date: 19850213

REF Corresponds to:

Ref document number: 11748

Country of ref document: AT

Date of ref document: 19850215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3168945

Country of ref document: DE

Date of ref document: 19850328

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19851026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19851027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19851031

Ref country code: LI

Effective date: 19851031

Ref country code: CH

Effective date: 19851031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19860630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19860701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881121

EUG Se: european patent has lapsed

Ref document number: 81810421.8

Effective date: 19860730