WO1997002104A1 - Ensemble plaque-busette interne comportant une zone de moindre resistance - Google Patents
Ensemble plaque-busette interne comportant une zone de moindre resistance Download PDFInfo
- Publication number
- WO1997002104A1 WO1997002104A1 PCT/FR1996/001017 FR9601017W WO9702104A1 WO 1997002104 A1 WO1997002104 A1 WO 1997002104A1 FR 9601017 W FR9601017 W FR 9601017W WO 9702104 A1 WO9702104 A1 WO 9702104A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- zone
- internal
- internal nozzle
- central
- Prior art date
Links
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
- B22D41/50—Pouring-nozzles
-
- 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 an internal plate-nozzle assembly for a distributor, said plate being intended to be applied against a support in which an orifice is provided.
- a slide valve In the continuous casting of steel, a slide valve is frequently used to control the flow of steel between a distributor and one or more continuous casting molds.
- a slide valve includes at least one fixed refractory plate mounted under a support plate and at least one plate movable relative to the fixed plate. Each of these plates has at least one hole for the passage of steel.
- the upper plate is associated with an internal nozzle which passes through the support plate and the bottom of the distributor.
- the solidified steel rod which is formed inside the pouring channel up to the movable plate has, at its lower end, the form of an elephant's foot which anchors the wolf in the fixed plate of the drawer shutter.
- each line leads to the formation of an anchorage for the wolf in the distributor.
- the internal nozzle must be pushed or pushed inside the distributor with the wolf. This problem is aggravated in the case where there are several casting lines. In fact, the steel contracts as it cools, so that the solidified steel rods tend to approach each other. As these rods are embedded in the wall of the distributor they enclose the part of the distributor which is between them.
- the fixed plate and the internal nozzle are often assembled in a metal envelope which seals the nozzle when a neutral gas is injected into the runner and facilitates their handling during assembly.
- the presence of this metal casing reinforces the assembly of the plate and the internal nozzle. It is very difficult to destroy the fixed plate and the internal nozzle when the wolf is pushed towards the interior of the distributor because it requires extruding the metal envelope through the orifice provided in the support on which the fixed plate is applied.
- the present invention specifically relates to an internal plate / nozzle assembly which solves this problem.
- the plate / nozzle assembly comprises a central zone located opposite the orifice of the support and a peripheral zone applied to the support, the central zone and the peripheral zone being connected by a zone of least resistance so that the central zone can be separated from the peripheral zone by the application of a small effort.
- a metal envelope surrounds the central zone and the peripheral zone, and the envelope comprises a weakened zone, in particular punched or notched.
- the envelope is made up of two separate parts, namely a part partially surrounding the peripheral zone and a part partially surrounding the central zone.
- a metal casing partially surrounds the internal nozzle, and a strapping band circles the plate.
- the internal nozzle has a cylindrical or slightly flared outer wall, this wall being surrounded by a metal casing.
- the plate comprises an insert situated in the central part of the plate and the outside diameter of which is smaller than the orifice provided in the support plate.
- FIG. 1 is a sectional view of a distributor drawer in which is mounted a fixed plate / internal nozzle assembly
- Figure 2 is a view of an internal plate / nozzle assembly according to the invention
- Figures 2a, 2b are detailed views showing alternative embodiments of the assembly shown in Figure 2
- Figure 3 is a view of an alternative embodiment of Figures 1 and 2
- Figure 4 is a view of another embodiment
- Figures 4a and 4b are detailed views which show alternative embodiments of Figure 4
- - Figure 5 is a sectional view of a third embodiment of the invention
- Figure 6 is a sectional view of a fourth embodiment of the invention.
- FIG. 1 a sectional view of a continuous casting distributor designated by the reference 2 under which is mounted a valve shutter 4.
- the distributor 2 consists of a steel wall 6 covered with a refractory lining 8.
- a seat brick 10 is mounted in the lining 8 at the bottom of the distributor.
- the drawer shutter 4 comprises a frame 12 fixed under a support plate 13 mounted under the distributor.
- Three refractory plates are mounted in the frame 12, namely a fixed upper plate 14, a movable plate 16, and a fixed lower plate 18.
- An internal nozzle 20 is mounted with the fixed upper plate 14 in a metal casing 22.
- the internal nozzle 20, the plates 14, 16 and 18 have holes which form a pouring channel which allows the passage of the steel from the distributor to a continuous casting mold (not shown).
- the drawer is closed by shifting the movable plate 16 relative to the fixed plate 14 so as to interrupt the continuity of the pouring channel.
- the liquid steel begins to cool and to solidify, particularly in the channel of the internal nozzle 20 due to the small diameter of this channel.
- a solidified steel rod is formed which anchors the wolf 24 in the distributor 2.
- the lower end of the solidified steel rod 26 Due to the erosion of the internal nozzle 20 during casting the lower end of the solidified steel rod 26 has a flared shape 28 in the shape of an elephant's foot which increases the grip of the wolf. This is why, when the distributor 2 is turned over to extract the wolf therefrom, the latter does not fall but remains hooked by the rod (s) 26. It is then necessary, after having removed the drawer, which leaves on the distributor the support plate and the plate / internal nozzle assembly to exert a very high pressure on the steel rod 26 so as to break the fixed plate 14 and the internal nozzle 20 and to extrude the envelope metal 22 through the hole 30 provided in the support plate 13.
- the object of the invention is to provide an internal plate / nozzle assembly which facilitates the unbinding operation.
- the plate 14 / internal nozzle 20 assembly has a central zone situated opposite the orifice 30 of the support plate 13 and a peripheral zone applied to the support plate 13.
- the central zone and the peripheral zone are linked together by a zone of least resistance.
- the metal casing 22 has a circular notch 32 at the junction between the fixed plate 14 and the internal nozzle 20.
- This notch can be made in the part substantially vertical of the metal casing 22 as shown in Figure 2, or on the horizontal part of this casing, in the immediate vicinity of the connection of these two parts. Thanks to the presence of this notch, the metal casing 22 is easily torn when a relatively small force is applied to the steel rod 26.
- the central part of the metal casing 22 enters the distributor.
- the peripheral part remains outside on the fixed plate.
- the plate 14 / internal nozzle 20 assembly is produced in two assembled parts, these two parts separate.
- the refractory material breaks relatively easily. The presence of the notch 32 thus greatly facilitates deloupage.
- Figures 2a and 2b two alternative embodiments of the notch 32.
- the metal casing 22 is notched on either side of its surface in the vertical part which surrounds the internal nozzle.
- FIG. 2b the metal casing 22 is notched at the level of the horizontal surface which surrounds the fixed plate 14.
- FIG 3 An alternative embodiment of the assemblies shown in Figures 1 and 2.
- the metal casing 22 is punched at the junction between its horizontal part and its substantially vertical part so as to constitute a weakening 36.
- FIG. 4 shows another embodiment of the invention.
- the metal casing 22 consists of a part 22a which surrounds the internal nozzle 20 and a part 22b which envelops the fixed plate 14. These two parts can be separated without effort. To carry out the splitting operation, it suffices to separate the internal nozzle from the plate 14 (two-part assembly) or to break the refractory material (monobloc assembly) which requires little effort.
- FIGS. 4a and 4b show two alternative embodiments of the mode of FIG. 4.
- Part 22b of the envelope metal 22 has a vertical rim 38.
- the part 22a of the metal casing is supported on the outside of this vertical rim 38 ( Figure 4a) or on the inside of the rim 38 ( Figure 4b).
- FIG. 5 shows a third embodiment of the invention.
- the metallic envelope consists of a single part 22c which surrounds only the internal nozzle 20.
- the fixed plate 14 is not surrounded by a metallic envelope, but simply by a strapping 40. Because the metallic envelope 22c and the strapping 40 are independent and separate, it is easy to pass the central zone of the plate / internal nozzle assembly through the hole 30 provided in the plate 13, in exactly the same way as in the case of the embodiment of Figure 4.
- FIG. 6 shows a third embodiment of the invention.
- the outer wall of the nozzle 20 is cylindrical so that the part of the metal casing 22 which is applied against this outer wall is vertical and of constant section.
- the fixed plate 14 has, in its central part, an insert 42.
- the outside diameter of the insert 42 is smaller than the diameter of the hole 30 provided in the support plate 13. In this way the internal nozzle 20 and the insert 42 can be easily pushed towards the inside of the distributor by sliding on the metal casing 22.
- the external part of the fixed plate 14 and the metal casing 22 remain integral with the shutter with drawer and the distributor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Closures For Containers (AREA)
- Nozzles (AREA)
- Cartons (AREA)
- Tubes (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Paper (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96924909A EP0836539B1 (fr) | 1995-07-03 | 1996-06-28 | Ensemble plaque-busette interne comportant une zone de moindre resistance |
DE69603964T DE69603964T2 (de) | 1995-07-03 | 1996-06-28 | Kombination platte-innere ausgussdüse mit einer sollbruchstelle |
AU65210/96A AU6521096A (en) | 1995-07-03 | 1996-06-28 | Internal nozzle/plate assembly comprising a weakened portion |
US08/973,107 US6082599A (en) | 1995-07-03 | 1996-06-28 | Internal nozzle/plate assembly comprising a weakened portion |
MXPA/A/1997/010455A MXPA97010455A (en) | 1995-07-03 | 1997-12-19 | Assembly of tobera / internal iron that comprises a portion of weak |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9508088A FR2736289B1 (fr) | 1995-07-03 | 1995-07-03 | Ensemble plaque-busette interne comportant une zone de moindre resistance |
FR95/08088 | 1995-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997002104A1 true WO1997002104A1 (fr) | 1997-01-23 |
Family
ID=9480690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/001017 WO1997002104A1 (fr) | 1995-07-03 | 1996-06-28 | Ensemble plaque-busette interne comportant une zone de moindre resistance |
Country Status (12)
Country | Link |
---|---|
US (1) | US6082599A (fr) |
EP (1) | EP0836539B1 (fr) |
KR (1) | KR100427608B1 (fr) |
CN (1) | CN1072080C (fr) |
AT (1) | ATE183680T1 (fr) |
AU (1) | AU6521096A (fr) |
DE (1) | DE69603964T2 (fr) |
ES (1) | ES2138361T3 (fr) |
FR (1) | FR2736289B1 (fr) |
TW (1) | TW298570B (fr) |
WO (1) | WO1997002104A1 (fr) |
ZA (1) | ZA965600B (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
PL2269751T3 (pl) * | 2009-07-01 | 2011-09-30 | Refractory Intellectual Property Gmbh & Co Kg | Wylew kadziowy |
CN114042903A (zh) * | 2021-11-18 | 2022-02-15 | 一重集团大连工程技术有限公司 | 三滑板滑动水口 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304938C1 (de) * | 1983-02-12 | 1984-05-03 | Didier-Werke Ag, 6200 Wiesbaden | Verfahren zum Aufbringen eines metallischen Spannbandes auf die Umfangsflaeche einer Verschlussplatte fuer einen Schiebeverschluss |
GB2173726A (en) * | 1985-04-11 | 1986-10-22 | Stopinc Ag | Metallurgical discharge sleeves |
FR2643001A1 (fr) * | 1989-01-05 | 1990-08-17 | Vesuvius Sa | Organe de coulee comportant une surface plane de glissement pour une plaque tiroir associee |
WO1992005901A1 (fr) * | 1990-10-01 | 1992-04-16 | Flo-Con Systems, Inc. | Organe de serrage pour piece refractaire sans bande et procede associe |
DE4328032A1 (de) * | 1992-09-04 | 1994-03-10 | Indref Oy Bollsta | Gießpfannen-Wechselausguß sowie Verfahren zur Herstellung und Erneuerung desselben |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1938117C2 (de) * | 1969-07-26 | 1975-12-18 | Didier Werke Ag | Behälter mit Schieberverschluß für flüssige Schmelze |
DE2548854A1 (de) * | 1975-10-31 | 1977-05-05 | Metacon Ag | Feuerfester stein mit einer durchlassoeffnung fuer fluessiges metall und verfahren zu dessen herstellung |
JP2667830B2 (ja) * | 1987-09-07 | 1997-10-27 | 株式会社クラレ | エチレン−ビニルアルコール系共重合体組成物 |
US5188743A (en) * | 1989-03-03 | 1993-02-23 | Flo-Con Systems, Inc. | Plate, changer, plate and method |
US5431374A (en) * | 1993-10-29 | 1995-07-11 | Vesuvius Crucible Company | Nozzle and base plate apparatus and method for use in a tundish slide gate valve |
-
1995
- 1995-07-03 FR FR9508088A patent/FR2736289B1/fr not_active Expired - Fee Related
-
1996
- 1996-06-28 CN CN96195215A patent/CN1072080C/zh not_active Expired - Fee Related
- 1996-06-28 US US08/973,107 patent/US6082599A/en not_active Expired - Fee Related
- 1996-06-28 AU AU65210/96A patent/AU6521096A/en not_active Abandoned
- 1996-06-28 KR KR1019970709494A patent/KR100427608B1/ko not_active IP Right Cessation
- 1996-06-28 AT AT96924909T patent/ATE183680T1/de not_active IP Right Cessation
- 1996-06-28 DE DE69603964T patent/DE69603964T2/de not_active Expired - Fee Related
- 1996-06-28 EP EP96924909A patent/EP0836539B1/fr not_active Expired - Lifetime
- 1996-06-28 ES ES96924909T patent/ES2138361T3/es not_active Expired - Lifetime
- 1996-06-28 WO PCT/FR1996/001017 patent/WO1997002104A1/fr active IP Right Grant
- 1996-07-02 ZA ZA965600A patent/ZA965600B/xx unknown
- 1996-07-15 TW TW085107980A patent/TW298570B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304938C1 (de) * | 1983-02-12 | 1984-05-03 | Didier-Werke Ag, 6200 Wiesbaden | Verfahren zum Aufbringen eines metallischen Spannbandes auf die Umfangsflaeche einer Verschlussplatte fuer einen Schiebeverschluss |
GB2173726A (en) * | 1985-04-11 | 1986-10-22 | Stopinc Ag | Metallurgical discharge sleeves |
FR2643001A1 (fr) * | 1989-01-05 | 1990-08-17 | Vesuvius Sa | Organe de coulee comportant une surface plane de glissement pour une plaque tiroir associee |
WO1992005901A1 (fr) * | 1990-10-01 | 1992-04-16 | Flo-Con Systems, Inc. | Organe de serrage pour piece refractaire sans bande et procede associe |
DE4328032A1 (de) * | 1992-09-04 | 1994-03-10 | Indref Oy Bollsta | Gießpfannen-Wechselausguß sowie Verfahren zur Herstellung und Erneuerung desselben |
Also Published As
Publication number | Publication date |
---|---|
AU6521096A (en) | 1997-02-05 |
EP0836539B1 (fr) | 1999-08-25 |
TW298570B (fr) | 1997-02-21 |
FR2736289B1 (fr) | 1997-08-29 |
FR2736289A1 (fr) | 1997-01-10 |
ZA965600B (en) | 1997-01-27 |
DE69603964D1 (de) | 1999-09-30 |
ATE183680T1 (de) | 1999-09-15 |
KR100427608B1 (ko) | 2004-09-08 |
MX9710455A (es) | 1998-03-31 |
KR19990023024A (ko) | 1999-03-25 |
CN1189791A (zh) | 1998-08-05 |
EP0836539A1 (fr) | 1998-04-22 |
DE69603964T2 (de) | 1999-12-09 |
CN1072080C (zh) | 2001-10-03 |
US6082599A (en) | 2000-07-04 |
ES2138361T3 (es) | 2000-01-01 |
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