EP0519271A1 - Abstichorgan - Google Patents

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Publication number
EP0519271A1
EP0519271A1 EP92109353A EP92109353A EP0519271A1 EP 0519271 A1 EP0519271 A1 EP 0519271A1 EP 92109353 A EP92109353 A EP 92109353A EP 92109353 A EP92109353 A EP 92109353A EP 0519271 A1 EP0519271 A1 EP 0519271A1
Authority
EP
European Patent Office
Prior art keywords
tapping
ring
wear
melt
tapping member
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Withdrawn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
EP92109353A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hans Rothfuss
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.)
Didier Werke AG
Original Assignee
Didier Werke 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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0519271A1 publication Critical patent/EP0519271A1/de
Withdrawn legal-status Critical Current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
    • B22D41/50—Pouring-nozzles

Definitions

  • the invention relates to a tapping member made of refractory, ceramic material for a melt vessel, the tapping member forming a flow channel for the melt, which wears out during tapping.
  • GB 1 196 993 describes a spout with a lining.
  • the lining does not serve to keep the tapping times as constant as possible in successive tapping operations.
  • GB 1 602 717 shows a diaphragm in a slide plate. If this wears out, the problems mentioned above occur.
  • the SU 1118-478-A also shows no way of keeping the tap duration as constant as possible.
  • a crust is deliberately formed on both sides of a ring.
  • the object of the invention is to propose a tapping member of the type mentioned, in which the tapping time decreases as little as possible with increasing wear.
  • the above object is achieved in a tapping member of the type mentioned in that at least one ring is inserted into the tapping member, which surrounds the flow channel and which consists of a refractory, ceramic material which is more wear-resistant than the material of the tapping member, and that in As the flow channel wears out, the ring in it becomes free and constricts the melt flow as a throttle orifice.
  • the cross-section of the flow channel widens with increasing wear.
  • the wear-resistant ring then becomes increasingly effective in the flow channel. It protrudes into the flow channel as a throttle orifice and leads to a reduction in the melt flow compared to the case in which the melt would simply flow through the flow channel which was enlarged due to wear.
  • the ring thus counteracts the wear-related decrease in tapping time.
  • the flow rate is not only reduced because the ring has a smaller inner diameter has as the worn through channel, but in particular in that the ring leads to a contraction of the melt flow due to the flow of the melt.
  • the tapping element consists of a uniform, wear-resistant ceramic material based on MgO or MgO and C.
  • the ring is made of a highly wear-resistant material based on ZrO2.
  • the ring can be provided in the tapping member, for example, in that the tapping member is first produced with an annular recess and then this recess is filled with the highly wear-resistant material.
  • a tapping member 1 for a metallurgical melt vessel forms a flow channel 2 for the melt.
  • a ring 3 is installed, the inside diameter of which is aligned with the inside diameter of the tapping member 1 in the embodiment according to FIG.
  • the ring 3 has a front edge 4 which is radial to the longitudinal axis L.
  • the ring 3 is made of a material that is more wear-resistant than the material of the tapping member 1.
  • the ring 3 is made of a material based on ZrO2.
  • the tapping member 1 consists of a material based on MgO or MgO with C.
  • the melt flow S is determined by the cross section and the shape of the flow channel 2.
  • the ring 3 - in the embodiments according to FIGS. 1 and 5 - is initially ineffective.
  • melt flow S when the tapping member 1 is worn is not predominantly formed by the passageway 2 widened as a result of the wear. It is thus ensured that the melt flow does not increase in accordance with the progressive wear.
  • a tapping duration that is substantially more constant than in the prior art or that shortens at least more slowly than in the prior art can be expected in many successive taps.
  • two rings 3 are provided. These work in the manner described. As long as the wear has not progressed very far, the upper ring 3 predominantly acts as a throttle orifice. With its progressive wear, the lower ring 3 then predominantly takes on the function as a throttle orifice.
  • the ring 3 is hidden in the unworn tapping member 1. It only becomes effective when the wear of the tapping member 1 has progressed so far that it protrudes into the through-channel 2.
  • the ring 3 protrudes into the passage channel 2 even in the non-worn state of the tapping member 1.
  • the ring 3 also determines the design of the melt flow S in the non-worn state of the tapping member 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Continuous Casting (AREA)
EP92109353A 1991-06-17 1992-06-03 Abstichorgan Withdrawn EP0519271A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914119897 DE4119897A1 (de) 1991-06-17 1991-06-17 Abstichorgan
DE4119897 1991-06-17

Publications (1)

Publication Number Publication Date
EP0519271A1 true EP0519271A1 (de) 1992-12-23

Family

ID=6434104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109353A Withdrawn EP0519271A1 (de) 1991-06-17 1992-06-03 Abstichorgan

Country Status (3)

Country Link
EP (1) EP0519271A1 (ja)
JP (1) JPH05200536A (ja)
DE (1) DE4119897A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10240491A1 (de) * 2002-09-03 2004-01-15 Refractory Intellectual Property Gmbh & Co.Kg Feuerfestes keramisches Tauchrohr
WO2013004571A1 (en) * 2011-07-06 2013-01-10 Refractory Intellectual Property Gmbh & Co. Kg A nozzle for guiding a metal melt

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063377A (en) * 1934-03-23 1936-12-08 Asea Ab Way of manufacturing fireproof nozzles for ladles
DE1905995A1 (de) * 1968-02-15 1969-09-25 Inst Der Feuerfest Ind Giesspfannenausguss,insbesondere fuer das Stahlstranggiessen
GB1215330A (en) * 1967-01-20 1970-12-09 Stoecker & Kunz Gmbh Improvements relating to casting ladles provided with teeming nozzles
FR2417360A1 (fr) * 1978-02-20 1979-09-14 Didier Werke Ag Sortie de coulee de fond de conteneur metallurgique servant a recevoir de l'acier fondu liquide, notamment de panier de coulee continue
EP0128732A2 (en) * 1983-06-07 1984-12-19 British Steel Corporation Improvements in or relating to tundish pouring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063377A (en) * 1934-03-23 1936-12-08 Asea Ab Way of manufacturing fireproof nozzles for ladles
GB1215330A (en) * 1967-01-20 1970-12-09 Stoecker & Kunz Gmbh Improvements relating to casting ladles provided with teeming nozzles
DE1905995A1 (de) * 1968-02-15 1969-09-25 Inst Der Feuerfest Ind Giesspfannenausguss,insbesondere fuer das Stahlstranggiessen
FR2417360A1 (fr) * 1978-02-20 1979-09-14 Didier Werke Ag Sortie de coulee de fond de conteneur metallurgique servant a recevoir de l'acier fondu liquide, notamment de panier de coulee continue
EP0128732A2 (en) * 1983-06-07 1984-12-19 British Steel Corporation Improvements in or relating to tundish pouring

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10240491A1 (de) * 2002-09-03 2004-01-15 Refractory Intellectual Property Gmbh & Co.Kg Feuerfestes keramisches Tauchrohr
WO2013004571A1 (en) * 2011-07-06 2013-01-10 Refractory Intellectual Property Gmbh & Co. Kg A nozzle for guiding a metal melt
RU2570259C2 (ru) * 2011-07-06 2015-12-10 Рифрэктори Интеллектчуал Проперти Гмбх Унд Ко.Кг Разливочный стакан для направления металлического расплава
US9333557B2 (en) 2011-07-06 2016-05-10 Refractory Intellectual Property Gmbh & Co. Kg Nozzle for guiding a metal melt
EP3170585A1 (en) * 2011-07-06 2017-05-24 Refractory Intellectual Property GmbH & Co. KG A nozzle for guiding a metal melt

Also Published As

Publication number Publication date
JPH05200536A (ja) 1993-08-10
DE4119897A1 (de) 1992-12-24

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