EP0480202B1 - Verschluss- und/oder Regeleinrichtung für den Ausguss eines metallurgischen Gefässes - Google Patents

Verschluss- und/oder Regeleinrichtung für den Ausguss eines metallurgischen Gefässes Download PDF

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Publication number
EP0480202B1
EP0480202B1 EP91115608A EP91115608A EP0480202B1 EP 0480202 B1 EP0480202 B1 EP 0480202B1 EP 91115608 A EP91115608 A EP 91115608A EP 91115608 A EP91115608 A EP 91115608A EP 0480202 B1 EP0480202 B1 EP 0480202B1
Authority
EP
European Patent Office
Prior art keywords
closure
drive rod
internal space
control device
cross
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
EP91115608A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0480202A1 (de
Inventor
Raimund Brückner
Ullrich Hintzen
Steve Lee
Andreas Schuler
Martin Wiesel
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
Priority to AT91115608T priority Critical patent/ATE92383T1/de
Publication of EP0480202A1 publication Critical patent/EP0480202A1/de
Application granted granted Critical
Publication of EP0480202B1 publication Critical patent/EP0480202B1/de
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor

Definitions

  • the invention relates to a closure and / or control device for the pouring of a metallurgical vessel, a drive rod extending in the interior of a rotatable, fire-resistant, ceramic closure and / or control member, the outer end of which is connected to a drive unit for the closure and / or control element can be coupled and its inner end engages in the interior of the closure and / or control element.
  • Such a closure and control device is described in WO 88/04 209.
  • Such a construction of the closure and control device is advantageous since it allows the drive rod to tilt in the closure and control member. As a result, angular errors do not lead to jamming in the rotary drive. It is also advantageous that torques do not have to be transmitted over the entire length of the closure and control element in the rotary drive. Overall, the kinematics in the rotary drive are advantageous.
  • the drive rod is mounted in the closure and control element by means of a ball head.
  • the closure and control element is free of bending forces when driving.
  • the connecting and regulating member can be raised and lowered by means of the drive rod. It is also rotatable.
  • the transmission of the rotary movement is structurally complex and affects the tiltability of the drive rod relative to the closure and control element.
  • closure and control device is described in DE 37 43 383 A1.
  • the closure and control element is only raised or lowered by means of the drive rod, but not rotated.
  • the drive rod engages with a ball head deep in the closure and control element, close to the outlet openings, on the closure and control element.
  • the drive rods are made of metal. It has been found that this is unfavorable since the metal melt present on the outside of the closure and regulating member generates a very high temperature in the interior thereof. In practice, this requires cooling of the drive rod. Such cooling is complex and can lead to dangerous conditions in the event of failure. In addition, the relatively large thermal expansion of the metallic drive rod is disadvantageous.
  • the object of the invention is to propose a closure and / or control device of the type mentioned, which can work without cooling the drive rod.
  • the above object is achieved in a closure and / or control device of the type mentioned at the outset in that the drive rod consists at least in its inner end region of a ceramic material in accordance with the characterizing part of the main claim.
  • the drive rod permanently withstands the high temperature prevailing in the interior, so that cooling of the drive rod is unnecessary.
  • the thermal expansion of the ceramic material of the drive rod is comparatively low and does not deviate significantly from the thermal expansion of the closure and / or control element, so that a compensation of the different thermal expansion is generally unnecessary.
  • a cylindrical outlet member 3 (stator) is attached at the bottom 1 of a metallurgical vessel 2.
  • the outlet member 3 has a lateral inlet opening 4 for the melt located in the vessel 2.
  • the bath level of the melt is designated 5.
  • a closure and control element 6 (rotor) is mounted in the outlet element 3.
  • the closure and control member 6 engages with its lower region 7 in the outlet member 3.
  • the closure and control member 6 is provided with a passage opening 8, which by rotating the closure and control member 6 about its longitudinal axis L with the Inlet opening 4 can be brought to cover.
  • the closure and control element 6 extends beyond the bath level 5. Above the lower area 7, it is provided with an interior space 9 open at the top. This is closed at its bottom 10.
  • the base 10 lies above a step 11 of the outer circumference of the closure and control element 6, with which it stands on an upper edge 12 of the outlet element 3.
  • a drive rod 13 extends in the interior 9. Its upper, outer end, which is not shown, is coupled to a drive unit with which the drive rod 13 can be rotated about its axis A.
  • a transmission element is provided according to Figure 1, which consists of a transmission block 14 and a cap 15.
  • the Dome 15 sits in a concave recess 16 of the base 10.
  • the drive rod 13 is mounted in the closure and control member so that the longitudinal axis L of the closure and control member 6 and the axis A of the drive rod 13 can be tilted towards each other. Due to this possible tilting of the drive rod 13 against the closure and control member 6, tolerances between the drive unit and the position of the outlet member 3 are compensated for so that the closure and control member 6 is freely supported in the outlet member 3 and can be driven.
  • the cross section Q of the interior 9 deviates from the circular shape. For example, it is square, polygonal or oval.
  • the transmission block 14 has a cross section q which is equal to the cross section Q of the interior 9. It is connected to the drive rod 13 in a rotationally fixed manner, so that when the drive rod 13 rotates about the axis A, the transmission block 14 of the closure and control element 6 is positively entrained so that it rotates about its longitudinal axis L. Avoid bulges on the outer periphery of the transmission block 14 so that the transmission block 14 prevents the possibility of tipping.
  • the transmission block 14 consists of a refractory ceramic, for example a ZrO2 or SiC ceramic.
  • the drive rod 13, the transmission block 14 and the spherical cap 15 can also form an integrally molded component made of ceramic material.
  • the latter preferably has approximately the same coefficient of thermal expansion, in particular for the transmission block 14, as the ceramic material of the closure and control element 6.
  • the drive rod 13 with transmission block 14 and cap 15 easily withstands the high temperature prevailing in the interior 9. It can continue to be used if the closure and control element 6 is worn and has to be replaced. Radial thermal expansions of the ceramic transmission block 14 to the longitudinal axis A are at most small, in any case not greater than thermal expansions of the closure and control element 6 in this area, so that there is no risk of damage to the closure and control element 6.
  • a depression 17 is formed on the base 10 of the interior 9. This has a cross-shaped cross-sectional profile.
  • the recess 17 tapers conically downwards.
  • the drive rod 13 has a cross-sectional profile corresponding to the cross-sectional profile of the recess 17. This engages with its lower, inner end in the recess 17. This ensures a rotationally fixed connection between the drive rod 13 and the closure and control element 6.
  • the cross section of the closure and control element 6 is annular.
  • the drive rod 13 consists of the ceramic described. But it can also consist of a ceramic material based on Al2O3 or Si3N4.
  • the drive rod 13 can advantageously be produced in slip casting, in continuous casting or by isostatic pressing. Both full profiles and hollow profiles can be used.
  • the drive rod 13 can also taper conically at its lower end region. However, this is not necessary. In any case, there is a free space 18 which allows the drive rod 13 to tilt with respect to the closure and control element 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Ceramic Products (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Cookers (AREA)
  • Closures For Containers (AREA)
  • Discharge Heating (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP91115608A 1990-10-10 1991-09-14 Verschluss- und/oder Regeleinrichtung für den Ausguss eines metallurgischen Gefässes Expired - Lifetime EP0480202B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91115608T ATE92383T1 (de) 1990-10-10 1991-09-14 Verschluss- und/oder regeleinrichtung fuer den ausguss eines metallurgischen gefaesses.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032083A DE4032083A1 (de) 1990-10-10 1990-10-10 Verschluss- und/oder regeleinrichtung fuer den ausguss eines metallurgischen gefaesses
DE4032083 1990-10-10

Publications (2)

Publication Number Publication Date
EP0480202A1 EP0480202A1 (de) 1992-04-15
EP0480202B1 true EP0480202B1 (de) 1993-08-04

Family

ID=6415972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115608A Expired - Lifetime EP0480202B1 (de) 1990-10-10 1991-09-14 Verschluss- und/oder Regeleinrichtung für den Ausguss eines metallurgischen Gefässes

Country Status (10)

Country Link
US (1) US5183624A (pt)
EP (1) EP0480202B1 (pt)
JP (1) JPH04262855A (pt)
KR (1) KR920007721A (pt)
AT (1) ATE92383T1 (pt)
BR (1) BR9104372A (pt)
CA (1) CA2053066A1 (pt)
DE (2) DE4032083A1 (pt)
ES (1) ES2044669T3 (pt)
ZA (1) ZA917483B (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032084C1 (pt) * 1990-10-10 1992-05-27 Didier-Werke Ag, 6200 Wiesbaden, De
GB9817645D0 (en) * 1998-08-14 1998-10-07 Didier Werke Ag Stopper
US8210402B2 (en) 2009-02-09 2012-07-03 Ajf, Inc. Slag control shape device with L-shape loading bracket

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US117918A (en) * 1871-08-08 Improvement in stoppers for ladles
US4196829A (en) * 1978-07-07 1980-04-08 Seaton Engineering Company Stopper throttling system
AU602179B2 (en) * 1986-12-01 1990-10-04 Arva Ag Discharge and flow regulator for metallurgical vessels and casting process
DE3731600A1 (de) * 1987-09-19 1989-04-06 Didier Werke Ag Drehschiebeverschluss fuer ein metallurigsches gefaess sowie rotor und/oder stator fuer einen solchen drehverschluss
DE3743383A1 (de) * 1987-12-21 1989-07-06 Radex Deutschland Ag Stopfenartige vorrichtung zur auslassregelung des ausgusses eines metallurgische schmelze aufnehmenden gefaesses
US4946083A (en) * 1988-12-29 1990-08-07 Vesuvius Crucible Company One-piece stopper rod

Also Published As

Publication number Publication date
DE59100256D1 (de) 1993-09-09
US5183624A (en) 1993-02-02
CA2053066A1 (en) 1992-04-11
BR9104372A (pt) 1992-06-09
EP0480202A1 (de) 1992-04-15
ES2044669T3 (es) 1994-01-01
DE4032083C2 (pt) 1992-09-17
JPH04262855A (ja) 1992-09-18
DE4032083A1 (de) 1992-04-16
KR920007721A (ko) 1992-05-27
ATE92383T1 (de) 1993-08-15
ZA917483B (en) 1992-06-24

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