EP0522284B1 - Plaque réfractaire pour fermeture à tiroir de poches de coulée - Google Patents

Plaque réfractaire pour fermeture à tiroir de poches de coulée Download PDF

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Publication number
EP0522284B1
EP0522284B1 EP92109352A EP92109352A EP0522284B1 EP 0522284 B1 EP0522284 B1 EP 0522284B1 EP 92109352 A EP92109352 A EP 92109352A EP 92109352 A EP92109352 A EP 92109352A EP 0522284 B1 EP0522284 B1 EP 0522284B1
Authority
EP
European Patent Office
Prior art keywords
plate
collar
valve plate
connecting sleeve
valve
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
EP92109352A
Other languages
German (de)
English (en)
Other versions
EP0522284A1 (fr
Inventor
Walter Toaldo
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.)
Stopinc AG
Original Assignee
Stopinc 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 Stopinc AG filed Critical Stopinc AG
Publication of EP0522284A1 publication Critical patent/EP0522284A1/fr
Application granted granted Critical
Publication of EP0522284B1 publication Critical patent/EP0522284B1/fr
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
    • 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

  • the invention relates to a refractory closure plate for a sliding closure at the spout of a metal-containing vessel, consisting of a refractory plate having a flow opening with a sliding surface, a plate attachment arranged coaxially to the flow opening on the plate side facing away from the sliding surface and a sheet metal jacket surrounding the plate and the plate attachment .
  • the sheet metal casing extends to the level of the face of the plate insert facing away from the sliding surface, so that the collar of the sheet metal casing is flush with this end face.
  • the adjacent sleeve is arranged for both the upper and the lower closure plate at a distance of 3 to 5 millimeters from the end face of the plate.
  • a commercially available refractory compound, for example mortar is used to seal between the plate and the sleeve. In practice, it may happen that the mortar is not properly distributed over the entire end face or that the sleeve is too far away from the plate and therefore there is too little mortar and the seal around the flow opening is not properly produced. In the worst case, this can lead to a so-called breakthrough, in which the liquid steel flows out laterally between the sleeve and the plate and, depending on the situation, can lead to total damage to the sliding closure.
  • the present invention has for its object to provide a fireproof closure plate of the type mentioned, in which the risk of breakthrough is greatly reduced with a simple and inexpensive measure and thus the operational reliability of a sliding closure with such closure plates is increased.
  • the object is achieved in that the sheet metal casing has a collar projecting above the plate attachment, which is arranged centrally to the flow opening and whose diameter approximately corresponds to the outer diameter of the plate attachment.
  • This collar according to the invention still has the surprising effect when it serves as a lesson when preparing a plate for mounting in a sliding closure, in which the mortar can be applied to the end face of the plate within this annular collar. This ensures on the one hand that this plastic mass is always applied in approximately the same amount and on the other hand it is avoided that this mass does not flow away in an uncontrolled manner when the plate is placed.
  • the projecting collar is designed as an annular extension of the sheet metal casing.
  • the sheet metal casing has a cylindrical centering surface which is coaxial with the flow opening as the centering of the plate in the sliding closure and the projecting collar is designed as an extension of this centering surface.
  • the annular collar is angled towards the inside.
  • the collar expediently protrudes between 5 and 20 mm from the corresponding end face of the plate attachment.
  • the collar facing the connecting sleeve is designed according to the invention such that it surrounds the intended joint between the plate and the sleeve.
  • the connecting sleeve is arranged on its end facing the closure plate in the sliding closure in such a way that its end facing the closure plate is surrounded by the collar with almost no play.
  • the collar of the closure plate can also protrude into an annular groove on the end face of the connecting sleeve. It is advantageous if the collar fits into the annular groove of the connecting sleeve with almost no play.
  • a sliding closure 10 known per se is partially shown, as is shown, for example, in EP-PS 0 277 146 and is therefore no longer described in detail in the present case.
  • This sliding closure 10 has a metallic housing 12 which is connected to a Wall 14 of a vessel containing molten metal, for example a pan, is fastened with an inner refractory lining 13.
  • the spout 16 of the vessel is defined by a refractory sleeve 18 which can be placed in this lining 13.
  • a fireproof closure plate 20 is arranged in the housing 12 such that it connects to this sleeve 18 at the end at a certain distance, for example 3 to 5 millimeters.
  • This closure plate 20 which is arranged as a fixed base plate, has on the opposite side a sliding surface against which a longitudinally displaceable refractory closure plate 22 is pressed.
  • the closure plate 22 is in turn inserted into a metallic slide unit 23, in which a subsequent exchangeable pouring sleeve 24 is also fastened.
  • the sleeves 18, 24 form, together with the closure plates 20, 22 in the open position of the slide closure, a flow opening 16 which drains the molten metal the melt flow can be completely interrupted.
  • the refractory closure plates 20, 22 each have a sheet metal sheath 26, 28, preferably made of steel, and a refractory plate mortared therein.
  • the sheet metal jacket 26, 28 each has a cylindrical centering surface 26 ′′, 28 ′′ centered around the refractory attachment of the plate and to the flow opening for the purpose of centering the plate in the housing 12 and respectively. in the slide unit 23.
  • the cylindrical centering surface 26 '', 28 '' of the sheet metal casing which is coaxial to the flow opening, has a collar 26 ', 28' projecting on the side 20 ', 22' facing away from the sliding surface of the plate, which essentially corresponds to that between the plate 20, 22 and the subsequent sleeve 18, 24 formed joint 29, 31 surrounds.
  • this gives the great advantage that, in the end, the risk of breakthrough between a plate and the sleeve can be considerably reduced.
  • this collar fulfills the task as the mortar cannot emerge laterally from the joint 29, 31.
  • the collar is provided in such a way that it is angled towards the inside and surrounds the sleeve in the set state with only a little play (0.5-3 mm). This ensures that the sleeve 18, 24, which usually has a different distance from the plate end face 20 ', 22' each time it is set, is guaranteed to be surrounded by the collar. With the lower sleeve 24, there is less of this risk, because the sleeve 24 is always at a defined distance from the underside 22 'of the plate. But this sleeve 24 is also surrounded by a collar 28.
  • the plates are otherwise identical, which is known to simplify their manufacture.
  • the refractory closure plates 30, 32 shown in FIG. 2 differ from those according to FIG. 1 only in that their respective collar 36 ', 38' formed by the sheet metal jacket 36, 38 only by approximately the thickness of the sheet metal jacket to the board end face 30 ', 32 'protrudes. In this case too, it is again ensured that a defined amount of mortar can be used with this collar 36 ', 38' and that the mortar is not pushed away in an undefined manner when the slabs are set. Centering surfaces 36 '', 38 '' of the plates 30, 32 in turn enable their centering in the housing, respectively. in the slide unit.
  • a sliding closure 10 is again shown in a partial view, in which a refractory sleeve 43 is arranged on the inlet side, a sleeve 44 on the outlet side and two refractory closure plates 40, 42 which are displaceable in relation to one another and are located in between.
  • the identically designed closure plates 40, 42 in turn each have a sheet metal casing 46, 48, each of which has a cylindrical centering surface 46 ′′, 48 ′′ surrounding the refractory attachment of the plate 40, 42 for centering the same, and starting therefrom an angled inwards by 90 ° Annular surface 47 ', 49' and in turn a collar 46 ', 47' projecting towards the plate end 40 ', 42', which forms a ring and projects into an annular groove 43 ', 44' of the sleeve 43, 44.
  • the cross section of the annular groove 43 ', 44' is larger on all sides by approximately 1 mm than the cross section of the collar 46 ', 48'.

Landscapes

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

Claims (9)

  1. Plaque d'obturation réfractaire pour un obturateur à tiroir sur l'orifice de coulée d'une cuve contenant du métal en fusion, comprenant une plaque réfractaire présentant une ouverture de passage et une surface de glissement, un bossage disposé sur la plaque coaxialement à l'ouverture de passage, sur le côté de la plaque éloigné de la surface de glissement, ainsi qu'une enveloppe de tôle entourant la plaque et le bossage de cette dernière, caractérisée par le fait que l'enveloppe de tôle (26, 28, 36, 38, 46, 48) présente un collet (26', 28', 36', 38', 46', 48') qui fait saillie sur le bossage de la plaque, qui est disposé concentriquement à l'ouverture de passage (16) et dont le diamètre correspond sensiblement au diamètre extérieur du bossage de la plaque.
  2. Plaque d'obturation suivant la revendication 1, caractérisée par le fait que le collet en saillie (26', 28', 36', 38', 46', 48') est réalisé sous forme de prolongement annulaire de l'enveloppe de tôle (26, 28, 36, 38, 46, 48).
  3. Plaque d'obturation suivant la revendication 1 ou 2, caractérisée par le fait que l'enveloppe de tôle (26, 28, 36, 38, 46, 48) présente une surface de centrage cylindrique (26'', 28'', 36'', 38'', 46'', 48'') coaxiale à l'ouverture de passage (16), en tant que moyen de centrage de la plaque dans l'obturateur à tiroir (10), et que le collet ou saillie (26', 28', 36', 38', 46', 48') est réalisé sous forme de prolongement de cette surface de centrage (26'', 28'', 36'', 38'', 46'', 48).
  4. Plaque d'obturation suivant la revendication 1 ou 2, caractérisée par le fait que le collet annulaire en saillie (26', 28', 36', 38', 46', 48') est coudé vers l'intérieur (rebord intérieur).
  5. Plaque d'obturation suivant l'une des revendications précédentes, caractérisée par le fait que le collet fait saillie d'environ 5 à 20 mm sur la face frontale correspondante du bossage de la plaque.
  6. Plaque d'obturation avec douille de raccordement réfractaire correspondante pour un obturateur à tiroir, suivant l'une des revendications précédentes, caractérisée par le fait que le collet (26', 28', 36', 38', 46', 48') entoure l'interstice prévu entre la plaque d'obturation (20, 22, 30, 32, 40, 42) et la douille de raccordement (18, 24, 43, 44).
  7. Plaque d'obturation avec douille de raccordement suivant la revendication 6, caractérisée par le fait que la douille de raccordement (18, 24, 44) est disposée, à son extrémité tournée vers la plaque d'obturation (20, 22, 42), de telle manière dans l'obturateur à tiroir (10) que son extrémité tournée vers la plaque d'obturation (20, 22, 42) soit entourée sensiblement sans jeu par le collet (26', 28', 46', 48').
  8. Plaque d'obturation avec douille de raccordement suivant la revendication 6, caractérisée par le fait que le collet (46') pénètre dans une gorge annulaire frontale (43') de la douille de raccordement (43).
  9. Plaque d'obturation avec douille de raccordement suivant la revendication 8, caractérisée par le fait que lecollet (46') s'ajuste sensiblement sans jeu dans la gorge annulaire (43') de la douille de raccordement (43).
EP92109352A 1991-07-12 1992-06-03 Plaque réfractaire pour fermeture à tiroir de poches de coulée Expired - Lifetime EP0522284B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2081/91 1991-07-12
CH2081/91A CH683969A5 (de) 1991-07-12 1991-07-12 Feuerfeste Verschlussplatte am Ausguss eines Metallschmelze enthaltenden Gefässes.

Publications (2)

Publication Number Publication Date
EP0522284A1 EP0522284A1 (fr) 1993-01-13
EP0522284B1 true EP0522284B1 (fr) 1996-08-28

Family

ID=4225464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109352A Expired - Lifetime EP0522284B1 (fr) 1991-07-12 1992-06-03 Plaque réfractaire pour fermeture à tiroir de poches de coulée

Country Status (9)

Country Link
US (1) US5251794A (fr)
EP (1) EP0522284B1 (fr)
JP (1) JPH05185203A (fr)
CA (1) CA2070798A1 (fr)
CH (1) CH683969A5 (fr)
DE (1) DE59206984D1 (fr)
FI (1) FI98499C (fr)
GR (1) GR3021482T3 (fr)
ZA (1) ZA924088B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2113271B1 (es) * 1994-09-07 1999-01-01 Krosaki Corp Estructura de fijacion de bastidor de placa metalica para tobera deslizante.
ZA992114B (en) * 1998-03-17 1999-09-28 Stopinc Ag Valve plate and a sliding gate valve at the outlet of a vessel containing molten metal.
TW553788B (en) * 2000-04-21 2003-09-21 Vesuvius Crucible Co One-piece inner nozzle and clamping device for an inner nozzle
JP4159075B2 (ja) * 2001-05-23 2008-10-01 黒崎播磨株式会社 スライドゲートプレート
TWI717455B (zh) * 2016-01-25 2021-02-01 比利時商維蘇威集團股份有限公司 滑動閘閥板、金屬殼及滑動閘閥

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2102059A1 (de) * 1971-01-16 1972-08-03 Didier-Werke Ag, 6200 Wiesbaden Schieberverschluß für flüssige Schmelze enthaltende Behälter, insbesondere Gießpfannen
ZA723538B (en) * 1971-06-07 1974-01-30 Uss Eng & Consult Ladle gate valve
US4415103A (en) * 1979-09-07 1983-11-15 Uss Engineers And Consultants, Inc. Full throttle valve and method of tube and gate change
CH647966A5 (de) * 1980-05-09 1985-02-28 Stopinc Ag Verschlussplatten-einheit fuer einen schiebeverschluss fuer metallurgische schmelzegefaesse.
GB2117498B (en) * 1982-04-01 1985-07-17 Flogates Ltd Sliding gate valves
BR8707428A (pt) * 1986-08-20 1988-11-01 Stopinc Ag Fecho corredico no bocal de despejo de um vaso contendo metal fundido
CH675976A5 (fr) * 1988-01-15 1990-11-30 Stopinc Ag

Also Published As

Publication number Publication date
FI922833A0 (fi) 1992-06-17
FI98499B (fi) 1997-03-27
EP0522284A1 (fr) 1993-01-13
US5251794A (en) 1993-10-12
FI922833A (fi) 1993-01-13
DE59206984D1 (de) 1996-10-02
FI98499C (fi) 1997-07-10
GR3021482T3 (en) 1997-01-31
ZA924088B (en) 1993-02-24
JPH05185203A (ja) 1993-07-27
CH683969A5 (de) 1994-06-30
CA2070798A1 (fr) 1993-01-13

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