EP0198237A1 - Plaque réfractaire - Google Patents

Plaque réfractaire Download PDF

Info

Publication number
EP0198237A1
EP0198237A1 EP19860103501 EP86103501A EP0198237A1 EP 0198237 A1 EP0198237 A1 EP 0198237A1 EP 19860103501 EP19860103501 EP 19860103501 EP 86103501 A EP86103501 A EP 86103501A EP 0198237 A1 EP0198237 A1 EP 0198237A1
Authority
EP
European Patent Office
Prior art keywords
composite component
insert
aperture
apertured member
component
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Withdrawn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
EP19860103501
Other languages
German (de)
English (en)
Inventor
James Kenneth Forster
Eric George Tucker
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.)
Gr Stein Refractories Ltd
Original Assignee
Gr Stein Refractories Ltd
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 Gr Stein Refractories Ltd filed Critical Gr Stein Refractories Ltd
Publication of EP0198237A1 publication Critical patent/EP0198237A1/fr
Withdrawn legal-status Critical Current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
    • 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 refractory component of a slide gate valve.
  • a slide gate valve is a teeming control mechanism for use on a ladle/tundish and essentially comprises two apertured plates, one fixed and in line with an aperture in the bottom of the vessel and the other slidably mounted beneath the fixed plate, the metal being discharged when the two apertures are aligned with one another.
  • the plates are made from a refractory material and conventionally each abut other refractory nozzles, an upper nozzle mounted above the stationary plate and a lower or collector nozzle mounted below the sliding plate.
  • This invention is directed towards an improvement in this design by providing a composite plate/nozzle component.
  • a composite plate/nozzle component for use in a slide gate valve comprises a pre-formed apertured member serving as an exposed plate, and a second member formed as an casting around said apertured member, the second member being formed with an integral nozzle the bore of which is in alignment with the aperture in the said apertured member.
  • the second member By forming the second member as a casting around the pre-formed member, and by providing the second member with an integral nozzle, what is in effect a one-piece construction is provided as distinct from the two components (plate and separate nozzle) conventionally used.
  • the composite component is adopted for the sliding plate/collector nozzle in the valve assembly and the mould for the casting may be constituted by a metal cladding which is then retained in situ for use in the valve itself.
  • the pre-formed apertured member which constitutes an insert, may be in the form of a ring with or without a stem (to provide additional protection along the bore) and the ring may be truly annular or, preferably, elongate with its major axis lying along the direction of movement of the sliding plate.
  • the most beneficial structure may be an insert with an elongate head and an annular stem, and the head and/or the stem may be stepped or tapered.
  • the insert may comprise a shaped, e.g. moulded, and fired high integrity refractory, e.g. zircon magnesia or high purity alumina, possibly pitch impregnated, or a stoved resin bonded body whereas the castable may be a different, perhaps lower-grade, mix e.g. a refractory concrete.
  • high integrity refractory e.g. zircon magnesia or high purity alumina, possibly pitch impregnated, or a stoved resin bonded body
  • the castable may be a different, perhaps lower-grade, mix e.g. a refractory concrete.
  • the method adopted in making the component may simply comprise mounting the metal casing within a jig having a central mandrel with the 'plate' uppermost and pouring the castable into the casing whilst it is vibrated to ensure compaction.
  • the pre-formed insert can then be located on the mandrel and pressed into the mix to a degree such that it lies in alignment with the top of the plate, or slightly proud, prior to curing and subsequent grinding.
  • the insert may be placed around a mandrel upstanding from a vibratable moulding table and the casing may then be placed over this and the castable poured in over the insert -the curing and grinding being effected as before.
  • a parting medium e.g. a mortar, may be spread over those surfaces thereof around which the castable will make contact.
  • a metal mould comprises a tubular circular-section part 1(a) and secured to it e.g., by welding, an elongate housing 1-(b): Disposed within the mould is an apertured refractory insert 2 which is cast in position by a refractory castable mix 3.
  • the insert has an elongate head 4, with or without an annular stem 5, and the aperture can be centrally located with respect to the major axis, or, as indicated, be offset along the major axis, the part 6 of the head serving in use as an additional high integrity surface for closing off the valve.
  • Figure 2 and Figure 3 illustrate another form of this component in so far as the insert within the mould 1(a) and 1(b) is differently shaped.
  • the head 7 is stepped around its perimeter to give additional keying within the castable 3 and the stem 8 is tapered for strength and durability.
  • the mould is placed in the attitude shown within a jig on to a vibratable table with and upstanding mandrel for defining the aperture.
  • the castable mix is then poured into the mould and th pre-fired insert 2 is pressed downwardly into this mix to the level shown and as previously described.
  • the insert is initially placed over the mandrel upstanding from the vibratable table and the mould is then placed 'face down' over the insert in the attitude shown; the castable mix is then poured into the mould.
  • the table may be recessed slightly to accommodate the insert such that it stands slightly proud of the castable surround; this aids grinding at the next stage.
  • the insert which may be pitch impregnated/stoved and shot blasted is preferably free from any surface carbon in powder form and an appropriate cement adhesive, may be applied to its exposed surfaces and allowed to dry before the application of the cement mortar covering.
  • the castable may have a moisture content of between say 5% and 10%.
  • the inset may be differently dimensioned or shaped, e.g., it might simply be annular in section, with or without a stem, and the head may be tapered.
  • the head of the mould may be raised slightly with a split metal band which may subsequently be removed to enable a degree of surface grinding to be effected without diminishing the head thickness of the metal mould itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP19860103501 1985-03-20 1986-03-14 Plaque réfractaire Withdrawn EP0198237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858507277A GB8507277D0 (en) 1985-03-20 1985-03-20 Refractory component
GB8507277 1985-03-20

Publications (1)

Publication Number Publication Date
EP0198237A1 true EP0198237A1 (fr) 1986-10-22

Family

ID=10576344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860103501 Withdrawn EP0198237A1 (fr) 1985-03-20 1986-03-14 Plaque réfractaire

Country Status (2)

Country Link
EP (1) EP0198237A1 (fr)
GB (1) GB8507277D0 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220875A (en) * 1988-01-27 1990-01-24 Vesuvius France Sa Integral slide-valve member and casting tube member
DE9006264U1 (de) * 1990-06-02 1990-08-09 Kliewer, Winfried, 4300 Essen Ausgußvorrichtung für Schiebersysteme
GB2252524A (en) * 1990-12-21 1992-08-12 Morganite Thermal Ceramics Ltd Distribution boxes, tundishes and like articles for casting molten metals
FR2695335A1 (fr) * 1992-09-09 1994-03-11 Lorraine Laminage Tiroir linéaire de poche à acier.
FR2697183A1 (fr) * 1992-10-23 1994-04-29 Tokyo Yogyo Kk Busette coulissante pour récipient récepteur d'acier fondu.
US5348202A (en) * 1987-02-28 1994-09-20 Thor Ceramics Limited Tubular refractory product
EP0659506A1 (fr) * 1993-12-21 1995-06-28 Zimmermann & Jansen GmbH Dispositif de fermeture coulissante
WO1997043590A1 (fr) * 1996-05-16 1997-11-20 North American Refractories Co. Procede de co-moulage destine a la production de materiaux refractaires sans chauffer ou cuire le materiau refractaire
US5866022A (en) * 1997-03-24 1999-02-02 North American Refractories Company Refractory pour tube with cast plate
US5954989A (en) * 1997-03-20 1999-09-21 Vesuvius Crucible Company Erosion and abrasion resistant refractory composition and article made therefrom
US5979719A (en) * 1998-04-17 1999-11-09 Vesuvius Crucible Company Soft-bore monoblock pouring tube
WO2001002114A1 (fr) * 1999-07-01 2001-01-11 Vesuvius Crucible Company Tube de coulee monobloc a alesage souple
FR2830473A1 (fr) * 2001-10-10 2003-04-11 Andre Daussan Procede pour realiser un tube de coulee
FR2830472A1 (fr) * 2001-10-10 2003-04-11 Andre Daussan Procede pour realiser un tube de coulee
EP1875979A1 (fr) * 2006-07-04 2008-01-09 Indref oy Busette de coulée submergée pour métal en fusion
CN107716912A (zh) * 2017-11-20 2018-02-23 河南新拓耐火材料有限公司 下水口及下水口的制作方法
CN107900320A (zh) * 2017-11-20 2018-04-13 河南新拓耐火材料有限公司 局部复合滑板砖及局部复合滑板砖的制作方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935424A1 (de) * 1968-07-11 1971-02-04 Interstop Ag Behaelter mit Schieberverschluss fuer fluessige Schmelze
AT304782B (de) * 1969-07-25 1973-01-25 Didier Werke Ag Schieberverschluß für mit einer Ausgußöffnung versehene, flüssige Schmelze enthaltende Behälter
DE2727742A1 (de) * 1976-06-25 1978-01-05 Didier Werke Ag Verschleissteile fuer schiebeverschluesse, verfahren zur herstellung solcher verschleissteile und schiebeverschluss mit solchen verschleissteilen
DE2844951A1 (de) * 1977-10-17 1979-04-19 Gen Refractories Co Schieber und verfahren zu dessen herstellung
EP0080248A1 (fr) * 1981-11-25 1983-06-01 Gr-Stein Refractories Limited Composants réfractaires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935424A1 (de) * 1968-07-11 1971-02-04 Interstop Ag Behaelter mit Schieberverschluss fuer fluessige Schmelze
AT304782B (de) * 1969-07-25 1973-01-25 Didier Werke Ag Schieberverschluß für mit einer Ausgußöffnung versehene, flüssige Schmelze enthaltende Behälter
DE2727742A1 (de) * 1976-06-25 1978-01-05 Didier Werke Ag Verschleissteile fuer schiebeverschluesse, verfahren zur herstellung solcher verschleissteile und schiebeverschluss mit solchen verschleissteilen
DE2844951A1 (de) * 1977-10-17 1979-04-19 Gen Refractories Co Schieber und verfahren zu dessen herstellung
EP0080248A1 (fr) * 1981-11-25 1983-06-01 Gr-Stein Refractories Limited Composants réfractaires

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5348202A (en) * 1987-02-28 1994-09-20 Thor Ceramics Limited Tubular refractory product
GB2220875A (en) * 1988-01-27 1990-01-24 Vesuvius France Sa Integral slide-valve member and casting tube member
DE9006264U1 (de) * 1990-06-02 1990-08-09 Kliewer, Winfried, 4300 Essen Ausgußvorrichtung für Schiebersysteme
GB2252524A (en) * 1990-12-21 1992-08-12 Morganite Thermal Ceramics Ltd Distribution boxes, tundishes and like articles for casting molten metals
FR2695335A1 (fr) * 1992-09-09 1994-03-11 Lorraine Laminage Tiroir linéaire de poche à acier.
FR2697183A1 (fr) * 1992-10-23 1994-04-29 Tokyo Yogyo Kk Busette coulissante pour récipient récepteur d'acier fondu.
US5360147A (en) * 1992-10-23 1994-11-01 Tokyo Yogyo Kabushiki Kaisha Sliding nozzle for molten steel receiving vessel
EP0659506A1 (fr) * 1993-12-21 1995-06-28 Zimmermann & Jansen GmbH Dispositif de fermeture coulissante
WO1997043590A1 (fr) * 1996-05-16 1997-11-20 North American Refractories Co. Procede de co-moulage destine a la production de materiaux refractaires sans chauffer ou cuire le materiau refractaire
US5954989A (en) * 1997-03-20 1999-09-21 Vesuvius Crucible Company Erosion and abrasion resistant refractory composition and article made therefrom
US5866022A (en) * 1997-03-24 1999-02-02 North American Refractories Company Refractory pour tube with cast plate
EP0969942A1 (fr) * 1997-03-24 2000-01-12 North American Refractories Company Tube de coulee refractaire a plateau coule
EP0969942A4 (fr) * 1997-03-24 2001-05-23 North American Refractories Tube de coulee refractaire a plateau coule
US5979719A (en) * 1998-04-17 1999-11-09 Vesuvius Crucible Company Soft-bore monoblock pouring tube
WO2001002114A1 (fr) * 1999-07-01 2001-01-11 Vesuvius Crucible Company Tube de coulee monobloc a alesage souple
FR2830473A1 (fr) * 2001-10-10 2003-04-11 Andre Daussan Procede pour realiser un tube de coulee
FR2830472A1 (fr) * 2001-10-10 2003-04-11 Andre Daussan Procede pour realiser un tube de coulee
EP1302262A1 (fr) * 2001-10-10 2003-04-16 André Daussan Procédé pour réaliser un tube de coulée
EP1875979A1 (fr) * 2006-07-04 2008-01-09 Indref oy Busette de coulée submergée pour métal en fusion
CN107716912A (zh) * 2017-11-20 2018-02-23 河南新拓耐火材料有限公司 下水口及下水口的制作方法
CN107900320A (zh) * 2017-11-20 2018-04-13 河南新拓耐火材料有限公司 局部复合滑板砖及局部复合滑板砖的制作方法

Also Published As

Publication number Publication date
GB8507277D0 (en) 1985-04-24

Similar Documents

Publication Publication Date Title
EP0198237A1 (fr) Plaque réfractaire
US4961460A (en) Moulds for metal casting and sleeves containing filters for use therein
JPS6117585B2 (fr)
US6787098B2 (en) Refractory lining for metallurgical vessel
FI67186C (fi) Gjutet eldfast element och foerfarande foer framstaellning av element
GB1575601A (en) Refractory structures for outlet valves for metallurgical vessels
GB1597832A (en) Breaker core assembly for use in the casting of molten metals
CA1043073A (fr) Coulee de metaux fondus
RU2760016C2 (ru) Система литья
CN207642240U (zh) 浇道系统和铸模系统
US4365731A (en) Refractory structures
US4532976A (en) Gas permeable metal casting mold having gas collection voids
US4526338A (en) High pressure molding riser
US4188010A (en) Casting risers
US4300617A (en) Pattern assemblies
EP0080248A1 (fr) Composants réfractaires
JPS6261754A (ja) 複合中子鋳型を用いた鋳造法
US4907640A (en) Foundry gating system
EP3395470B1 (fr) Système d'alimentation
JP3329556B2 (ja) 溶融金属流量制御用スライディングノズル
US4749022A (en) Foundry gating system
WO1997021511A1 (fr) Ajutage doseur
JPH0367466B2 (fr)
EP0340367B1 (fr) Système d'alimentation du moule dans une fonderie
JPH0713902Y2 (ja) 高圧鋳造用中子リング

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

Kind code of ref document: A1

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

17P Request for examination filed

Effective date: 19861210

17Q First examination report despatched

Effective date: 19870911

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19880115

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TUCKER, ERIC GEORGE

Inventor name: FORSTER, JAMES KENNETH