EP0406531A2 - Parties résistantes à l'usure réfractaire pour busettes À  tiroir à des récipients métallurgiques - Google Patents

Parties résistantes à l'usure réfractaire pour busettes À  tiroir à des récipients métallurgiques Download PDF

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Publication number
EP0406531A2
EP0406531A2 EP90107208A EP90107208A EP0406531A2 EP 0406531 A2 EP0406531 A2 EP 0406531A2 EP 90107208 A EP90107208 A EP 90107208A EP 90107208 A EP90107208 A EP 90107208A EP 0406531 A2 EP0406531 A2 EP 0406531A2
Authority
EP
European Patent Office
Prior art keywords
part according
sealing layer
wearing part
wear
tar
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Withdrawn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
EP90107208A
Other languages
German (de)
English (en)
Other versions
EP0406531A3 (en
Inventor
Hans Rothfuss
Georges Wernert
Raimund Brückner
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 EP0406531A2 publication Critical patent/EP0406531A2/fr
Publication of EP0406531A3 publication Critical patent/EP0406531A3/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Withdrawn legal-status Critical Current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
    • 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
    • B22D41/36—Treating the plates, e.g. lubricating, heating

Definitions

  • the invention relates to refractory wear parts according to the preamble of claim 1.
  • a refractory closure plate for sliding closures is known, in the flow opening of which an inner ring is arranged in such a way that an annular space closed by insulating mortar layers remains, in which at least one tar ring is arranged.
  • Each tar ring is encompassed on the underside and on the flanks by a sheet metal jacket, which is intended to allow tar vapors to migrate solely through the mortar layer, which opens onto the working surface of the closure plate. Accordingly, the tar vapors get as a ring stream between the working surfaces of the pair of closure plates, where they crack without the open pores of the wearing part becoming blocked, in order to counteract infiltrating molten metal.
  • the object of the present invention is therefore to design a wearing part of the generic type in such a way that, despite the use of an impregnating agent, such as tar, for the sufficient reduction in slag infiltration, improvement in the closing and sliding behavior and / or improvement in the resistance to temperature changes, the disadvantageous escape of impregnating agent vapors, in particular Tar steaming is avoided.
  • an impregnating agent such as tar
  • This object is essentially achieved in that the wearing parts have a temperature-resistant and gas-tight sealing layer outside the endangered areas. In this way it is prevented that a wear part containing impregnating agent releases impregnating agent vapors, for example tar vapors, to the environment via its free surface which is not endangered by molten metal.
  • the casting operation becomes cleaner with regard to emissions, and contamination of the sliding closure is largely avoided.
  • the sealing layer is based on curable synthetic and / or natural resins, e.g. Epoxy resin.
  • curable synthetic and / or natural resins e.g. Epoxy resin.
  • Such layers have the required temperature resistance and perform the desired sealing function particularly reliably.
  • the layer contains fine-grained refractory material such as Al2O3, SiO2, MgO or carbon black, the particle size preferably being essentially ⁇ 20 ⁇ m.
  • the layer can contain flaky refractory material, such as hexagonal boron nitride, graphite or clay, in particular kaolin, to achieve the desired purpose.
  • flaky refractory material such as hexagonal boron nitride, graphite or clay, in particular kaolin, to achieve the desired purpose.
  • sealing layer is formed on the basis of sealing wax, possibly with the incorporation of temperature-resistant inorganic color pigments, ie commercially available materials.
  • the layer can also be formed, for example, on the basis of a temperature-resistant ink, which closes the pores on the surface of the closure plate and thereby offers a sufficient seal against the escape of impregnating agent vapors, for example tar vapors.
  • a layer of refractory constituents and a sealing lacquer layer it is also possible to apply two or more layers, for example a layer of refractory constituents and a sealing lacquer layer, to areas of wear parts that are not affected by the melt.
  • Layer combinations with different properties are conceivable, e.g. a well-adhering primer layer with a well sealing surface layer.
  • the tar-soaked inlet sleeve 2 is arranged in a perforated brick 3 by means of a mortar joint 4, the part of the sleeve 2 protruding downward from the perforated brick 3 on the conical surface 5 having a heat-resistant and gas-tight sealing layer 6 which covers the free area of the Closes the sleeve surface, which is otherwise covered by the perforated brick 3 and on the groove 7 by the spring 8 of the base plate 9.
  • the layer 6 shuts off tar vapors from operating heat in the open pores of the sleeve, the only way of which is the outflow from the melted areas on the inner end face and the flow opening A1. There, the tar vapors reduce wear and are not lost as harmful emissions.
  • the sliding surface 12 of which cooperates sealingly with the base plate sliding surface 10 has two overlapping sealing layers 6 and 6a, which are of different properties and can take into account special operating conditions and requirements.
  • the outlet sleeve 13 according to FIG. 4 is not soaked in tar but has an annular tar depot 14, from which the open sleeve pores are supplied with tar.
  • the sealing layer 6 applied to the conical surface and to the outer end face of the sleeve 13 forces volatile tar substances to escape exclusively at the flow opening A4.
  • a wearing part can also be used in this connection, which is both soaked in tar and has a tar depot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP19900107208 1989-07-03 1990-04-14 Refractory wear resisting parts for slide gate nozzles in metallurgical vessels Withdrawn EP0406531A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921794 1989-07-03
DE19893921794 DE3921794A1 (de) 1989-07-03 1989-07-03 Feuerfeste verschleissteile fuer schiebeverschluesse an metallurgischen gefaessen

Publications (2)

Publication Number Publication Date
EP0406531A2 true EP0406531A2 (fr) 1991-01-09
EP0406531A3 EP0406531A3 (en) 1992-04-22

Family

ID=6384173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900107208 Withdrawn EP0406531A3 (en) 1989-07-03 1990-04-14 Refractory wear resisting parts for slide gate nozzles in metallurgical vessels

Country Status (3)

Country Link
EP (1) EP0406531A3 (fr)
JP (1) JPH0335868A (fr)
DE (1) DE3921794A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008542A1 (fr) * 1995-08-30 1997-03-06 Robert Bosch Gmbh Systeme d'etancheite pour composant detecteur d'un detecteur de gaz

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008080384A (ja) * 2006-09-28 2008-04-10 Kurosaki Harima Corp スライディングノズル用のプレート状耐火物

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875835A (en) * 1957-03-13 1961-08-23 Union Carbide Corp Impregnation of carbonaceous materials with epoxy resins
DE2830199B1 (de) * 1978-07-10 1979-03-08 Martin & Pagenstecher Gmbh Feuerfeste Platte fuer einen Schieberverschluss an Metallschmelze enthaltenden Gefaessen
DE2830209B1 (de) * 1978-07-10 1979-09-06 Didier Werke Ag Verfahren zum wiederholten Traenken von mit Metallschmelze in Beruehrung kommender feuerfester Teile von Schiebeverschluessen
JPS57152366A (en) * 1980-10-09 1982-09-20 Kurosaki Refract Co Ltd Method for performing prevention of damaging, repairing and other necessary treatments of plate slideway in sliding nozzle device
DE3406941C2 (de) * 1984-02-25 1986-05-07 Didier-Werke Ag, 6200 Wiesbaden Feuerfeste Verschleißteile für Schiebeverschlüsse
FR2618705A1 (fr) * 1987-07-31 1989-02-03 Stopinc Ag Piece d'usure refractaire pour recipients contenant du metal en fusion

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875835A (en) * 1957-03-13 1961-08-23 Union Carbide Corp Impregnation of carbonaceous materials with epoxy resins
DE2830199B1 (de) * 1978-07-10 1979-03-08 Martin & Pagenstecher Gmbh Feuerfeste Platte fuer einen Schieberverschluss an Metallschmelze enthaltenden Gefaessen
DE2830209B1 (de) * 1978-07-10 1979-09-06 Didier Werke Ag Verfahren zum wiederholten Traenken von mit Metallschmelze in Beruehrung kommender feuerfester Teile von Schiebeverschluessen
JPS57152366A (en) * 1980-10-09 1982-09-20 Kurosaki Refract Co Ltd Method for performing prevention of damaging, repairing and other necessary treatments of plate slideway in sliding nozzle device
DE3406941C2 (de) * 1984-02-25 1986-05-07 Didier-Werke Ag, 6200 Wiesbaden Feuerfeste Verschleißteile für Schiebeverschlüsse
FR2618705A1 (fr) * 1987-07-31 1989-02-03 Stopinc Ag Piece d'usure refractaire pour recipients contenant du metal en fusion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Band 6, Nr. 256 (M-179)(1134), 15. Dezember 1982; & JP - A - 57152366 (KUROSAKI) 20.09.1982 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008542A1 (fr) * 1995-08-30 1997-03-06 Robert Bosch Gmbh Systeme d'etancheite pour composant detecteur d'un detecteur de gaz
US5846391A (en) * 1995-08-30 1998-12-08 Robert Bosch Gmbh Seal for a sensor element of a gas sensor

Also Published As

Publication number Publication date
DE3921794A1 (de) 1991-01-17
EP0406531A3 (en) 1992-04-22
JPH0335868A (ja) 1991-02-15
DE3921794C2 (fr) 1993-07-01

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