EP0658386B1 - Foundry apparatus for automatic casting with pressurized ladle - Google Patents

Foundry apparatus for automatic casting with pressurized ladle Download PDF

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Publication number
EP0658386B1
EP0658386B1 EP94119601A EP94119601A EP0658386B1 EP 0658386 B1 EP0658386 B1 EP 0658386B1 EP 94119601 A EP94119601 A EP 94119601A EP 94119601 A EP94119601 A EP 94119601A EP 0658386 B1 EP0658386 B1 EP 0658386B1
Authority
EP
European Patent Office
Prior art keywords
ladle
carriage
casting
motorized
guides
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
EP94119601A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0658386A2 (en
EP0658386A3 (en
Inventor
Mario Grigoletto
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.)
PROGELTA Srl
Original Assignee
PROGELTA Srl
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 PROGELTA Srl filed Critical PROGELTA Srl
Publication of EP0658386A2 publication Critical patent/EP0658386A2/en
Publication of EP0658386A3 publication Critical patent/EP0658386A3/en
Application granted granted Critical
Publication of EP0658386B1 publication Critical patent/EP0658386B1/en
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
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel

Definitions

  • the present invention relates to a foundry apparatus for automatic casting with pressurized ladle.
  • This pressurized ladle includes a steel plate container which is internally lined with refractory material and has a hermetic upper lid provided with means for discharging and introducing pressurized gas.
  • Two siphons one for loading and one for casting, are connected below the container and extend upwards.
  • the first siphon has, in an upward region, a funnel-shaped loading mouth; the second siphon is instead provided with a basin with a casting hole in an upward region.
  • the ladle includes optical devices for controlling the level in the runner and a plug for closing the casting hole.
  • the molten metal is loaded by means of a secondary ladle which is appropriately removed from a melting furnace.
  • pressurized gas is injected therein; this reduces the internal level and raises the levels in the siphons and therefore in the runner.
  • the level control device combined with the plug for opening and closing the casting hole, allows the material to be cast into a die arranged below.
  • Casting currently occurs by keeping the ladle fixed and by providing casting dies which are arranged in series and movable along a rail.
  • the assembly is conveniently moved by one step so as to position the next die for casting.
  • This fixed-ladle system is in any case a poorly flexible system from an operational point of view, since only the dies to be cast are movable, and production times are negatively affected if the movement is blocked for any reason.
  • a principal aim of the present invention is therefore to provide a foundry apparatus for automatic casting with pressurized ladle that is more flexible in operation than current ones.
  • a consequent primary object is to minimize downtimes.
  • Another important object is to provide an apparatus that also allows to obtain qualitative benefits in the casting.
  • Another object is to provide an apparatus that can be produced with conventional equipment.
  • a foundry apparatus for automatic casting with pressurized ladle characterized in that it comprises a motorized means which cooperates with a casting line with dies and/or flaskless dies (motta) to be cast that are movable along first translatory guides, said motorized means being movable along second guides which are parallel and close to the first guides at a straight portion thereof, said motorized means furthermore supporting a pressurized ladle.
  • a motorized means which cooperates with a casting line with dies and/or flaskless dies (motta) to be cast that are movable along first translatory guides, said motorized means being movable along second guides which are parallel and close to the first guides at a straight portion thereof, said motorized means furthermore supporting a pressurized ladle.
  • a foundry apparatus comprises a casting line with dies 10 to be cast which are connected to each other in succession, are mounted on a carriage with wheels 11, and are movable along a rail track 12.
  • a second track 13 lies parallel alongside said first track 12 at a straight portion thereof, and a carriage 15 is coupled thereon by means of wheels 14 so as to be movable; said carriage 15 is motorized with an electric gearmotor, not shown in the figures, whose speed can be adjusted with an inverter (this adjustment is possible with a remote control post).
  • the carriage 15 has a strong metal structure with two spaced vertical posts 16 between which a seat-shaped base 18 is rotatably coupled above a horizontal axis 17; said base usually rests downwardly on the structure of said carriage 15.
  • the seat-shaped base 18 is rotated by means of a hydraulic cylinder 19 which is mounted between an arm 20 thereof, which is arranged radially with respect to the axis 17, and the carriage 15.
  • a pressurized ladle 21 is seated on the base 18 on self-centering locators, not shown in the figures, and is provided with nitrogen feeding systems equipped with a quick coupling.
  • the ladle is per se known and is of the type described in the previously mentioned Italian patent no. 1,225,409.
  • the parts of the ladle 21 that are visible in the figures are the container 23 with the lid 24, a loading funnel 25, and a runner 26 with its plug 27.
  • the runner 26 protrudes from the second track 13 and is arranged above the region where the dies 10 pass at the casting holes.
  • a cantilevered structure 28 is rigidly coupled to the structure of the carriage 15 within the dimensions of the rails of the second track 13, and a control booth 29 is placed on said structure; said booth supports, close to the ladle 21, a per se known threading inoculation system 30, with the associated inoculant reserve tank and infrared optical sensor for adjusting and synchronizing the casting operation.
  • the inoculation system 30 is controlled by the control post by means of mechanical and electrical connections.
  • a festoon guide not shown in the figures for the sake of simplicity, with festoons carried by carriages on an appropriate overhead rail, is provided to supply electric power, nitrogen, air, and methane to the carriage 15.
  • pressurized ladle is movable along guides in this apparatus makes the assembly particularly flexible from an operational point of view.
  • This method minimizes downtimes and the time for which the molten metal remains inside the ladle.
  • Another advantage is that it is possible to replace the casting ladle without tampering with or disassembling any part of the carriage.
  • the ladle is allowed to turn over in order to reduce the lateral bulk, placing the runner 26 in the space between the rails of the second track 13.
  • the apparatus is adapted not only for casting lines formed by casting boxes but also for casting lines formed by flaskless dies with a continuous or intermittent carousel.
  • the materials employed may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Casting Devices For Molds (AREA)
EP94119601A 1993-12-15 1994-12-12 Foundry apparatus for automatic casting with pressurized ladle Expired - Lifetime EP0658386B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD930242 1993-12-15
ITPD930242A IT1263419B (it) 1993-12-15 1993-12-15 Impianto di fonderia per la colata automatica con siviera a pressione

Publications (3)

Publication Number Publication Date
EP0658386A2 EP0658386A2 (en) 1995-06-21
EP0658386A3 EP0658386A3 (en) 1995-11-15
EP0658386B1 true EP0658386B1 (en) 1999-07-14

Family

ID=11390500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119601A Expired - Lifetime EP0658386B1 (en) 1993-12-15 1994-12-12 Foundry apparatus for automatic casting with pressurized ladle

Country Status (4)

Country Link
EP (1) EP0658386B1 (it)
DE (1) DE69419486T2 (it)
ES (1) ES2133469T3 (it)
IT (1) IT1263419B (it)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435871A (en) * 1973-06-21 1976-05-19 Gen Motors Corp Continuous mechanicaltiron pouring line
IT1010974B (it) * 1974-03-27 1977-01-20 Forcesi Oppi G Macchina per introdurre a bassa pressione metallo fuso in stampi
DE2543168C3 (de) * 1975-09-27 1980-05-29 Brown, Boveri & Cie Ag, 6800 Mannheim Fahrbare Gießvorrichtung
CH629130A5 (fr) * 1979-06-07 1982-04-15 Mezger Ed Maschinenfabrik & Ei Installation de coulee a commande automatique.
CH647435A5 (en) * 1980-07-11 1985-01-31 Fischer Ag Georg Continuous-flow vessel for positioning between a casting ladle and casting mould

Also Published As

Publication number Publication date
EP0658386A2 (en) 1995-06-21
EP0658386A3 (en) 1995-11-15
ITPD930242A0 (it) 1993-12-15
DE69419486D1 (de) 1999-08-19
IT1263419B (it) 1996-08-05
DE69419486T2 (de) 1999-10-28
ITPD930242A1 (it) 1995-06-15
ES2133469T3 (es) 1999-09-16

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