EP0529108B1 - Busette à tiroir pour récipients métallurgiques - Google Patents

Busette à tiroir pour récipients métallurgiques Download PDF

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Publication number
EP0529108B1
EP0529108B1 EP91112562A EP91112562A EP0529108B1 EP 0529108 B1 EP0529108 B1 EP 0529108B1 EP 91112562 A EP91112562 A EP 91112562A EP 91112562 A EP91112562 A EP 91112562A EP 0529108 B1 EP0529108 B1 EP 0529108B1
Authority
EP
European Patent Office
Prior art keywords
slide
plate
slide gate
wear
top plate
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
EP91112562A
Other languages
German (de)
English (en)
Other versions
EP0529108A1 (fr
Inventor
Leopold Dipl.-Ing. Schladofsky
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE59103128T priority Critical patent/DE59103128D1/de
Priority to AT91112562T priority patent/ATE112195T1/de
Priority to DK91112562.3T priority patent/DK0529108T3/da
Priority to EP91112562A priority patent/EP0529108B1/fr
Priority to ES91112562T priority patent/ES2061134T3/es
Publication of EP0529108A1 publication Critical patent/EP0529108A1/fr
Application granted granted Critical
Publication of EP0529108B1 publication Critical patent/EP0529108B1/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 slide closure on metallurgical vessels with a refractory slide top plate with at least one flow opening and a highly heat-resistant insert which surrounds the flow opening (see e.g. EP-A-391053, Fig. 5).
  • ladles and / or distribution vessels in the bottom area are equipped with one or more slide closures which consist of several plates which can be moved relative to one another and with the aid of which the outflow quantity of the liquid metal into one or more molds is controlled.
  • Slider closures for controlling the outflow of a molten metal are known in the prior art. These slide closures consist of a set of refractory plates provided with outlet openings which are held in mutual contact. These plates are movable relative to one another in order to enable or block the melt flow or to influence the flow rate.
  • a generic slide closure consists of a slide top plate and a slide closure plate. The slide top plate is fixed in place under a casting vessel at the pouring opening. The slide closure plate is slidably arranged under the slide upper plate.
  • Another generic slide closure consists of a slide top plate, a slide middle plate and a slide bottom plate. The slide top plate is also fixed with the slide bottom plate under the outlet opening of the casting vessel so that the outlet openings are aligned with each other.
  • the slide middle plate is between the slide top plate and the Slider base plate slidably mounted so that the metal flow can be controlled.
  • the slide closure plate is rotatably or pivotably arranged. For safety reasons and to avoid leakages, devices are available which keep the plates in effective mutual contact, the slide center plate or closure plate remaining displaceable.
  • slide closures are preferably fastened by wedge locks for easier assembly under casting vessels or distribution channels.
  • the flow opening of the upper slide plate is washed out at its lower end.
  • the lower end of the flow opening of the slide top plate serves as a so-called control edge at which the flow rate of the liquid metal is determined.
  • the washouts at the lower flow opening the slide top plate fill with liquid steel during casting and lead to jamming, so that the slide middle plate can no longer be moved.
  • Another disadvantage is that after the casting has been stopped, the liquid steel freezes at the washouts and, together with the plug which has also been frozen in the pouring sleeve of the distribution vessel and the slide top plate, firmly connects the slide plate to the pouring sleeve.
  • Refractory panels of the specified type consist of a base made of refractory refractory concrete and an oxide ceramic insert.
  • the oxide-ceramic insert extends only over part of the base body, so that the pouring jet could infiltrate the insert and damage the base body.
  • the production of the plates is comparatively complex because the complete plate with base body and insert must be replaced in each case
  • ring inserts made of wear-resistant refractory material are inserted into the openings in the fixed plate that are washed out by the flowing steel.
  • the wear parts repaired in this way have a relatively short service life, however, because the refractory casting or ramming compound of the base body tears both on the surface and inside due to insufficient elasticity.
  • the ring inserts are backwashed by the flowing steel, so that the entire plate must be replaced.
  • the invention solves this problem in that a highly heat-resistant insert consisting of an upper wear part and a lower wear ring, which encompasses the wear part at its annular lower recess, is inserted into the slide top plate, the inner lower edge of the wear part forming the standard edge.
  • a slide top plate 1 is only partially shown with a highly heat-resistant insert A consisting of a wearing part 2 and a flow 3 and a lower recess 4 and the control edge 5 and a wear ring 6 is shown.
  • a slide center plate 7 with the flow opening 3 ' is only shown schematically.
  • the slide closure is used with the annular bead 8 of the slide top plate 1 in the outflow opening of the distribution vessel or the ladle.
  • the liquid metal flows through the flow 3.
  • the slide center plate 7 assumes a throttle position and controls the amount of melt at the control edge 5.
  • the wearing part 2 and the wear ring 6 are washed out on one side in the case of single-edge control and on both sides in the case of double-edge control in the sliding direction of the center plate 7.
  • the slide center plate 7 is pushed into the closed position and the stagnating melt flows under the washed-out points on the regular edge 5 of the wearing part 2 and the wearing ring 6 and solidifies together with the melt in the flow 3.
  • the wearing part 2 When disassembling the slide closure from the bottom of the distributor vessel or from the bottom of the ladle, the wearing part 2 according to the invention detaches from the top slide plate 1 and remains together with the solidified melt on the outlet opening of the distributor vessel or on the outlet of the ladle.
  • the wear ring 6 damaged by the melt can now be easily removed downwards from the slide top plate 1 without destroying it.
  • the wearing part of the insert A is inserted from above into the base body of the upper slide plate and glued to the wear ring 6, which is inserted from below into a corresponding recess in the upper slide plate 1.
  • Fig. 2 shows the wearing part 2 of the highly heat-resistant insert A with the annular recess 4 for receiving the wear ring 6 of the insert A.
  • the wearing part 2 detaches from the upper slide plate 1 and remains with the melt which solidifies in it as a stopper prevents the melt from flowing out of the tundish, hang on the bottom of the tundish or on the bottom of the ladle.
  • the wearing part 2 can be easily removed together with the solidified melt by simply knocking it off the bottom of the distributor vessel or the ladle.
  • a new wear part 2 is inserted from above into the slide plate and glued to the wear ring 6 to be inserted from below.
  • Fig. 3 shows a new wear ring 6 with a one-sided elliptical magnification 6 'for single-edge control in continuous casting.
  • Fig. 4 shows a wear ring 6 with diametrically opposite elliptical magnifications 6 'for a two-edge control in continuous casting.
  • the slide top plate 1 can be prepared on site in a simple manner, avoiding laborious repair work for a new casting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (4)

  1. Busette à tiroir montées sur des cuves métallurgiques, comportant une plaque supérieure réfractaire (1) comportant au moins une ouverture de passage (3) et un insert (A) réfractaire aux hautes températures et qui entoure l'ouverture de passage (3), caractérisée par le fait que l'insert (A) réfractaire aux hautes températures est constitué par une pièce d'usure supérieure (2) et une pièce d'usure inférieure (6) qui enserre d'une manière étanche la pièce d'usure (2) au niveau de son évidement inférieur annulaire (4), le bord inférieur intérieur de la bague d'usure (2) formant le bord de réglage (5).
  2. Busette à tiroir suivant la revendication 1, caractérisée par le fait que la bague d'usure (6) est élargie d'un côté avec une forme elliptique au niveau de sa périphérie extérieure.
  3. Busette à tiroir suivant la revendication 1 ou 2, caractérisée par le fait que la bague d'usure (6) est élargie avec une forme elliptique, sur deux côtés diamétralement opposés sur son pourtour extérieur.
  4. Busette à tiroir suivant l'une des revendications 1 à 3, caractérisée par le fait que les élargissements elliptiques (6') sont des pièces d'ajustement pouvant être insérées sur la bague d'usure (6).
EP91112562A 1991-07-26 1991-07-26 Busette à tiroir pour récipients métallurgiques Expired - Lifetime EP0529108B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE59103128T DE59103128D1 (de) 1991-07-26 1991-07-26 Schieberverschluss an metallurgischen Gefässen.
AT91112562T ATE112195T1 (de) 1991-07-26 1991-07-26 Schieberverschluss an metallurgischen gefässen.
DK91112562.3T DK0529108T3 (da) 1991-07-26 1991-07-26 Skyderlukke på metalfade
EP91112562A EP0529108B1 (fr) 1991-07-26 1991-07-26 Busette à tiroir pour récipients métallurgiques
ES91112562T ES2061134T3 (es) 1991-07-26 1991-07-26 Cierre de corredera en vasijas metalurgicas.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91112562A EP0529108B1 (fr) 1991-07-26 1991-07-26 Busette à tiroir pour récipients métallurgiques

Publications (2)

Publication Number Publication Date
EP0529108A1 EP0529108A1 (fr) 1993-03-03
EP0529108B1 true EP0529108B1 (fr) 1994-09-28

Family

ID=8206987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112562A Expired - Lifetime EP0529108B1 (fr) 1991-07-26 1991-07-26 Busette à tiroir pour récipients métallurgiques

Country Status (5)

Country Link
EP (1) EP0529108B1 (fr)
AT (1) ATE112195T1 (fr)
DE (1) DE59103128D1 (fr)
DK (1) DK0529108T3 (fr)
ES (1) ES2061134T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1968772B (zh) * 2004-10-18 2012-05-30 里弗雷克特里知识产权两合公司 闸板及其生产方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917851C2 (de) * 1999-04-21 2003-04-10 Didier Werke Ag Drehschieberplatte
CN106994509A (zh) * 2016-01-25 2017-08-01 科华控股股份有限公司 一种可延长使用寿命和维修方便的造型线台车定位结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8009335U1 (de) * 1980-04-03 1980-07-24 Zimmermann & Jansen Gmbh, 5160 Dueren Schieberelement fuer den schieberverschluss einer giesspfanne
IT1142623B (it) * 1981-12-22 1986-10-08 Flocon Italiana Procedimento per rigenerare una piastra mobile di un cassetto di colata di una siviera
DE3434857C1 (de) * 1984-09-22 1992-06-11 Didier-Werke Ag, 6200 Wiesbaden Schieberverschluss fuer den Ausguss metallurgischer Gefaesse
US4951929A (en) * 1989-04-06 1990-08-28 Didier-Taylor Refractories Corporation Refractory assembly including inner and outer refractory members with interference shrink fit therebetween and method of formation thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1968772B (zh) * 2004-10-18 2012-05-30 里弗雷克特里知识产权两合公司 闸板及其生产方法

Also Published As

Publication number Publication date
ATE112195T1 (de) 1994-10-15
ES2061134T3 (es) 1994-12-01
DK0529108T3 (da) 1995-04-10
DE59103128D1 (de) 1994-11-03
EP0529108A1 (fr) 1993-03-03

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