EP0373287A2 - Device for continuous casting flow of metals - Google Patents

Device for continuous casting flow of metals Download PDF

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Publication number
EP0373287A2
EP0373287A2 EP89109009A EP89109009A EP0373287A2 EP 0373287 A2 EP0373287 A2 EP 0373287A2 EP 89109009 A EP89109009 A EP 89109009A EP 89109009 A EP89109009 A EP 89109009A EP 0373287 A2 EP0373287 A2 EP 0373287A2
Authority
EP
European Patent Office
Prior art keywords
metals
continuous casting
fixed plate
mobile
sized
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.)
Withdrawn
Application number
EP89109009A
Other languages
German (de)
French (fr)
Other versions
EP0373287A3 (en
Inventor
Roberto Ing. Pescatori
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.)
Nuova Sirma SpA
Original Assignee
Nuova Sirma SpA
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 Nuova Sirma SpA filed Critical Nuova Sirma SpA
Publication of EP0373287A2 publication Critical patent/EP0373287A2/en
Publication of EP0373287A3 publication Critical patent/EP0373287A3/en
Withdrawn legal-status Critical Current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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor

Definitions

  • This invention relates to a continuous casting device for metals.
  • Continuous casting plants for metals generally comprise an upper ladle for pouring the molten metal, and an intermediate distributor from which the molten metal is cast into the underlying ingot moulds.
  • the distributor base is generally provided with a casting device consisting of a refractory element commonly known as a nozzle, comprising a sized vertical hole which ensures constant flow of the casting jet.
  • a drawback of this known device is the considerable time loss involved in its replacement, with consequent reduction in production yield.
  • the nozzle has to be replaced under the following circumstances: - when with the passage of time the sized hole enlarges so altering the molten metal flow rate to the extent of exceeding predetermined limits, so that casting has to be halted, - following clogging of the sized hole by the steel, - if the refractory element suffers damage for various reasons, - after a certain period of continuous casting.
  • casting devices comprising a slide gate consisting of a fixed plate and a mobile plate slidable horizontally to the fixed plate and housing a plurality of side-by-side refractory elements (nozzles).
  • nozzles side-by-side refractory elements
  • a nozzle is positioned coaxially to the casting hole and a pneumatic or hydraulic activator member horizontally moves the nozzles so as to position a new nozzle below the casting hole as a replacement for the damaged or otherwise inoperable one.
  • This known device has however certain drawbacks, and in particular: - the danger of steel seepage along the contacting walls of the refractory elements, - substantial operating cost as the refractory element comprising the damaged hole must necessarily be scrapped.
  • a continuous casting device for metals comprising a fixed plate mounted on the base of a distributor and a frame mobile horizontally to said fixed plate, characterised in that said mobile frame comprises a plurality of parallel sized holes.
  • each sized hole can be provided upperly with a sized ring.
  • the device of the invention is applied to the base of a tundish 1 and consists substantially of a slide gate comprising a fixed plate 2 and a metal frame 3 mobile to said fixed plate along parallel guides (not shown on the drawing).
  • the mobile frame internally houses a plate 4 of refractory material comprising a plurality of parallel vertical holes 5, each of which is provided upperly with a sized ring 6 having a greater diameter than the casting hole 7.
  • a jet covering tube which protects the molten metal jet as far as the underlying ingot mould.
  • a drive member 9 of pneumatic or hydraulic type is associated with the mobile plate to horizontally move said plate in order to position a new sized hole as a replacement for that previously damaged.
  • the improvement in the casting device according to the invention has numerous advantages, and in particular: - the facility for replacing the sized hole while the casting plant is in operation, - the ability to cast continuously for very long periods, - reduced operating costs because the calibrated hole ring can be replaced without having to scrap the entire plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

A continuous casting device for metals comprising a fixed plate (2) mounted on the base of a distributor (1) and a frame (1) mobile horizontally to said fixed plate (2), characterised in that said mobile frame (3) comprises a plurality of parallel sized holes (5).

Description

  • This invention relates to a continuous casting device for metals.
  • Continuous casting plants for metals generally comprise an upper ladle for pouring the molten metal, and an intermediate distributor from which the molten metal is cast into the underlying ingot moulds.
  • The distributor base is generally provided with a casting device consisting of a refractory element commonly known as a nozzle, comprising a sized vertical hole which ensures constant flow of the casting jet.
  • A drawback of this known device is the considerable time loss involved in its replacement, with consequent reduction in production yield. Specifically, the nozzle has to be replaced under the following circumstances:
    - when with the passage of time the sized hole enlarges so altering the molten metal flow rate to the extent of exceeding predetermined limits, so that casting has to be halted,
    - following clogging of the sized hole by the steel,
    - if the refractory element suffers damage for various reasons,
    - after a certain period of continuous casting.
  • To obviate this drawback, casting devices have been proposed comprising a slide gate consisting of a fixed plate and a mobile plate slidable horizontally to the fixed plate and housing a plurality of side-by-side refractory elements (nozzles). During operation, a nozzle is positioned coaxially to the casting hole and a pneumatic or hydraulic activator member horizontally moves the nozzles so as to position a new nozzle below the casting hole as a replacement for the damaged or otherwise inoperable one.
  • This known device has however certain drawbacks, and in particular:
    - the danger of steel seepage along the contacting walls of the refractory elements,
    - substantial operating cost as the refractory element comprising the damaged hole must necessarily be scrapped.
  • According to the invention these drawbacks are obviated by a continuous casting device for metals comprising a fixed plate mounted on the base of a distributor and a frame mobile horizontally to said fixed plate, characterised in that said mobile frame comprises a plurality of parallel sized holes.
  • Advantageously each sized hole can be provided upperly with a sized ring.
  • The present invention is described in detail hereinafter with reference to the accompanying drawing showing a longitudinal diagrammatic section through the device of the invention.
  • As can be seen from the figure, the device of the invention is applied to the base of a tundish 1 and consists substantially of a slide gate comprising a fixed plate 2 and a metal frame 3 mobile to said fixed plate along parallel guides (not shown on the drawing).
  • The mobile frame internally houses a plate 4 of refractory material comprising a plurality of parallel vertical holes 5, each of which is provided upperly with a sized ring 6 having a greater diameter than the casting hole 7.
  • In a position below the mobile plate and coaxial to the casting hole there is provided a jet covering tube (snorkel) which protects the molten metal jet as far as the underlying ingot mould.
  • A drive member 9 of pneumatic or hydraulic type is associated with the mobile plate to horizontally move said plate in order to position a new sized hole as a replacement for that previously damaged.
  • From the aforegoing it is apparent that the improvement in the casting device according to the invention has numerous advantages, and in particular:
    - the facility for replacing the sized hole while the casting plant is in operation,
    - the ability to cast continuously for very long periods,
    - reduced operating costs because the calibrated hole ring can be replaced without having to scrap the entire plate.

Claims (4)

1. A continuous casting device for metals comprising a fixed plate (2) mounted on the base of a distributor (1) and a frame (1) mobile horizontally to said fixed plate (2), characterised in that said mobile frame (3) comprises a plurality of parallel sized holes (5).
2. A device as claimed in claim 1, characterised in that each sized hole (5) is provided upperly with a sized ring (6).
3. A device as claimed in claim 1, characterised by comprising an actuator (9) acting on the mobile frame (3).
4. A device as claimed in claim 3, characterised in that said actuator (9) is a cylinder-piston unit.
EP19890109009 1988-12-14 1989-05-19 Device for continuous casting flow of metals Withdrawn EP0373287A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8861985U IT218110Z2 (en) 1988-12-14 1988-12-14 CONTINUOUS CASTING METAL DEVICE
IT6198588U 1988-12-14

Publications (2)

Publication Number Publication Date
EP0373287A2 true EP0373287A2 (en) 1990-06-20
EP0373287A3 EP0373287A3 (en) 1992-01-02

Family

ID=11293190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890109009 Withdrawn EP0373287A3 (en) 1988-12-14 1989-05-19 Device for continuous casting flow of metals

Country Status (3)

Country Link
EP (1) EP0373287A3 (en)
IT (1) IT218110Z2 (en)
ZA (1) ZA898381B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801921C1 (en) * 1998-01-20 1999-06-24 Didier Werke Ag Closure unit for a sliding closure system
EP2543455A1 (en) 2011-07-08 2013-01-09 Refractory Intellectual Property GmbH & Co. KG Fire-resistant ceramic sliding plate and accompanying sliding plate set

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH374454A (en) * 1959-06-15 1964-01-15 Fichera Ernesto Device for casting molten metals from a container
GB2033564A (en) * 1978-10-12 1980-05-21 Nippon Kokan Kk Slide closure for the pouring nozzle of a vessel for molten metal
GB2102544A (en) * 1981-07-15 1983-02-02 Stopinc Ag Rotary sliding gate valve for a metallurgical vessel
JPS60247449A (en) * 1984-05-23 1985-12-07 Toshiba Ceramics Co Ltd Device for discharging molten metal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH374454A (en) * 1959-06-15 1964-01-15 Fichera Ernesto Device for casting molten metals from a container
GB2033564A (en) * 1978-10-12 1980-05-21 Nippon Kokan Kk Slide closure for the pouring nozzle of a vessel for molten metal
GB2102544A (en) * 1981-07-15 1983-02-02 Stopinc Ag Rotary sliding gate valve for a metallurgical vessel
JPS60247449A (en) * 1984-05-23 1985-12-07 Toshiba Ceramics Co Ltd Device for discharging molten metal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 118 (M-475)(2175); & JP - A - 60247449 (TOSHIBA CERAMICS) 07.12.1985 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801921C1 (en) * 1998-01-20 1999-06-24 Didier Werke Ag Closure unit for a sliding closure system
EP2543455A1 (en) 2011-07-08 2013-01-09 Refractory Intellectual Property GmbH & Co. KG Fire-resistant ceramic sliding plate and accompanying sliding plate set
WO2013007526A2 (en) 2011-07-08 2013-01-17 Refractory Intellectual Property Gmbh & Co. Kg Refractory ceramic slide plate and associated slide plate set
WO2013007526A3 (en) * 2011-07-08 2013-06-13 Refractory Intellectual Property Gmbh & Co. Kg Refractory ceramic slide plate and associated slide plate set
US9375786B2 (en) 2011-07-08 2016-06-28 Refractory Intellectual Property Gmbh & Co. Kg Refractory ceramic slide plate and associated slide plate set
EA025092B1 (en) * 2011-07-08 2016-11-30 Рифрэктори Интеллектчуал Проперти Гмбх Унд Ко. Кг Refractory ceramic slide plate and associated slide plate set

Also Published As

Publication number Publication date
EP0373287A3 (en) 1992-01-02
IT218110Z2 (en) 1992-03-30
ZA898381B (en) 1991-12-24

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