EP1454687A1 - Montagevorrichtung für einen Sammelausguss - Google Patents

Montagevorrichtung für einen Sammelausguss Download PDF

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Publication number
EP1454687A1
EP1454687A1 EP03447047A EP03447047A EP1454687A1 EP 1454687 A1 EP1454687 A1 EP 1454687A1 EP 03447047 A EP03447047 A EP 03447047A EP 03447047 A EP03447047 A EP 03447047A EP 1454687 A1 EP1454687 A1 EP 1454687A1
Authority
EP
European Patent Office
Prior art keywords
collecting nozzle
support
nozzle
bottom piece
layer
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Withdrawn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
EP03447047A
Other languages
English (en)
French (fr)
Inventor
Fabrice Sibiet
Mariano Collura
Vincent Boisdequin
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.)
Vesuvius Group SA
Original Assignee
Vesuvius Group SA
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 Vesuvius Group SA filed Critical Vesuvius Group SA
Priority to EP03447047A priority Critical patent/EP1454687A1/de
Publication of EP1454687A1 publication Critical patent/EP1454687A1/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Withdrawn legal-status Critical Current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
    • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle
    • 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
    • B22D41/502—Connection arrangements; Sealing means therefor

Definitions

  • the invention relates to a device for mounting a collecting nozzle of a casting and such a collecting nozzle.
  • a collecting nozzle is a tubular conduit made of refractory material which is fixed by example under a ladle to guide the liquid steel flowing from the ladle and form a jet of steel.
  • the steel flows through an opening in the bottom wall of the pocket, opening which is delimited for example by an internal nozzle to which are attached regulating means, in the form of a stopper closing its upper mouth, or a set of perforated plates arranged at its lower mouth.
  • a first plate is held stationary against the nozzle internal and a second plate is mounted on a mobile carriage to slide against the first plate by offsetting its aperture with respect to that of the first plate.
  • the collecting nozzle is pressed either against the second plate, it then moves with the carriage, i.e. against a third stationary plate which sandwiches the second plate with the first, the nozzle collector is then fixed.
  • the collecting nozzle is generally held against the plate (the second or third) thanks to a bayonet socket which encircles a portion upper of the collecting nozzle comprising an annular support flange.
  • the regulating means consist of a stopper rod
  • no plate is added to the mouth of the internal nozzle and the collecting nozzle is directly applied against the internal nozzle using a bayonet socket.
  • bottom piece is the piece against which the collecting nozzle must be applied.
  • This bottom piece can therefore be in particular a movable plate, a fixed plate or an internal nozzle.
  • the present invention aims to provide such an improvement.
  • the present invention has relates to a device for mounting a collecting nozzle on a bottom part of a container casting, the bottom part being carried by a support, the device comprising means support to support the collecting nozzle on the support of the bottom piece and apply it by counter reaction on the bottom piece.
  • This device is characterized in that the support means include elastic means, the deformation of which generates the force with which the collecting nozzle rests on the support.
  • the applicant company also identified a phenomenon of withdrawal of the nozzle collector following its first uses, which can, in the long run, accentuate its wrong positioning.
  • the elastic means are constituted by springs interposed between teeth of a bayonet socket encircling the collecting nozzle and supports carried by the support of the bottom piece.
  • each tooth has, on its face in contact with the spring or springs, a profile inclined forming a ramp, so that the rotation of the collector nozzle causes, in a first, its screwing until it is applied against the bottom piece, then, in secondly, a prestressing of the springs.
  • the springs can be springs helical, gas springs, one or more belleville washers, shaped springs, etc.
  • the elastic means act by means of a moving part in permanent contact with the elastic means.
  • the elastic means comprise a lever, the fulcrum of which is integral with the support of the bottom piece and two arms, one of which is supported by means of an elastic piece on the support of the piece. bottom and the other on the teeth of the sleeve or an intermediate moving part, said lever being designed to allow a large stroke of the part against which it is supported (the teeth of the sleeve or the intermediate moving part).
  • a shorter arm can be provided on the side where it rests by means of an elastic piece on the support of the bottom piece, for example in a ratio 5: 1 to 1.5: 1, preferably 2: 1 which offers a good compromise between space and the desired effect.
  • the operator can more easily unstick the bushing or the moving part from the support of the bottom part for a given force without requiring any particular tool.
  • the system being more flexible, it can better compensate for thermal expansion.
  • a layer of flexible material resistant to the conditions of use of the collecting nozzle, for example a layer of graphite, on the face of the collecting nozzle intended to be applied against the bottom part.
  • This improves the quality of the seal between the collecting nozzle and the bottom part.
  • this material is made integral with the face of the nozzle before its use. Of the so, it is possible to install, in steel, a collecting nozzle very quickly and without having to operate the slightest joint manipulation.
  • the present invention also relates to a collecting nozzle of a container for casting, characterized in that it comprises, on its upper face in the position of use, a layer of a flexible material resistant to the conditions of use of the collecting nozzle, by example a graphite layer.
  • the regulating means of FIG. 1 comprises a steel carriage 1 which has a substantially parallelepiped shape, provided on its two long sides with slides 2 allowing its displacement by translation on the rails (not shown) of a frame (not shown), as is known.
  • the carriage carries a movable plate 3 of refractory material which is retained in a recess 4 of suitable shape provided on the face of the carriage intended to be steered up when the cart is in use.
  • the movable plate 3 has a through hole 5 of circular section and the carriage comprises, in its housing 4, an opening 6 also circular but of larger diameter.
  • the through hole in the plate and the opening circular of the carriage are concentric.
  • the movable plate 3 follows the translational movements of the carriage 1 and thus plays its role adjustable shutter, by offsetting its through hole 5 relative to the through hole (not shown) of another plate of refractory material (not shown), designated plate fixed, which is fixed under the pouring vessel and against which the movable plate must slide.
  • the molten steel passes through the through hole of the movable plate. It is then guided by a collecting nozzle 7 which is held against the movable plate 3.
  • the collecting nozzle is a tubular conduit in refractory material comprising an axial channel 8 whose diameter is substantially identical to that of the through hole 5 of the movable plate 3.
  • the collecting nozzle 7 has a downstream end face 9, from which a frustoconical portion 10 leading to a first cylindrical side wall 11 which is extended, near its upstream end, by an inclined shoulder 12 forming an angle of 60 ° with its longitudinal axis, then by a second cylindrical side wall 13 of larger diameter than the first, resulting in a upstream end face 14 by which the nozzle bears against the movable plate 3.
  • the collecting nozzle is retained against the movable plate, with its axial channel in the extension of the through hole, thanks to a mounting device which comprises in particular a bayonet socket 15 and a receptacle 16.
  • the sleeve 15 which is made of steel, comprises a tubular central portion 17 of which the internal diameter is very slightly greater than that of the first cylindrical side wall 11 of the nozzle. At one of its ends, which is intended to be directed towards the mobile carriage, the tubular portion is extended by a flare 18 whose internal wall forms an angle of 60 ° with the longitudinal axis of the socket. This flare extends radially outwards by three teeth 19 distributed evenly.
  • each tooth 19 is not constant but increases from a radial edge from this to the other, between a minimum thickness and a maximum thickness.
  • the meaning of variation of the thickness of the three teeth is angularly the same.
  • Another end of the sleeve, opposite the teeth 19, has a radial flange 20 which, on the one hand, fulfills a protective function against splashes of molten steel and, on the other hand, offers a grip for a wrench thanks to an appropriate shape.
  • the sleeve 15 is intended to be engaged axially around the collecting nozzle 7, from the downstream end 9 of the latter, until its flaring 18 comes to take support on the inclined shoulder 12 of the nozzle.
  • the receptacle 16 which is made of steel, is secured to the movable carriage 3 by screws (not shown) passing through holes made in the receptacle.
  • the receptacle has a shape of revolution and includes a bell 22 extended, on the side of the carriage, by a collar 23.
  • the internal diameter of the neck 23 is slightly greater than the external diameter of the second side wall 13 of the nozzle, which can therefore be housed in the neck, as is see on the drawings.
  • the external diameter of the neck is smaller than that of the opening 6 of the carriage, so that the neck enters with a certain radial clearance in this opening, but as it protrudes axially from the bell 22 over a height slightly less than the thickness of the carriage in its opening, the neck remains set back from the bottom of the hollow housing 4 for the plate mobile.
  • the bell 22 is delimited by a side wall 24 and a flat annular bottom 25 connecting said side wall at neck 23.
  • the external diameter of the side wall 24 and the annular bottom 25 is greater than the diameter of the opening 6, to such an extent that the annular bottom of the bell covers the edge of the opening and can therefore rest firmly on the carriage.
  • the internal face 26 of the side wall 24 has three bosses 27 regularly distributed, which leave free a cylindrical volume, concentric to the receptacle, whose diameter is slightly greater than the external diameter of the tubular central portion 17 of the sleeve 15, so that said tubular portion 17 fits in the middle of the bosses 27 of the receptacle.
  • the internal wall 26 of the receptacle forms notches 28 whose dimensions are large enough that the socket 15 can be engaged in the receptacle 16 by a axial translational movement, its teeth 19 being presented in line with the notches 28.
  • each boss 27 arises at a axial distance e from the bottom and extends to the free edge 29 of the receptacle, opposite the bottom 25.
  • the axial distance e between each boss and the bottom of the bell is greater than the maximum thickness of each tooth 19.
  • This shoulder must nevertheless have a sufficient thickness to withstand the thrust of the helical spring 33 when it
  • the pads are dimensioned so that the free space between a pad projecting at the maximum of the cylindrical chamber and the bottom of the bell is greater than the maximum thickness of a tooth.
  • the receptacle and the bayonet socket constitute means for press the collecting nozzle on the carriage and apply the said nozzle by reaction against the movable plate.
  • the coil springs are elastic means through which the collecting nozzle rests on the carriage.
  • the nozzle 7 has, on its upper face in position of use, that is to say on its end face 14 which is intended to come into contact with the movable plate 3, a layer of graphite which can be applied, for example by bonding, so as to be pre-positioned at the time of the first installation of the collecting nozzle on the trolley.
  • the receptacle and the socket are thus protected from any risk of plastic deformation resulting from this expansion.
  • the level of spring preload i.e. the force with which the collecting nozzle is applied against the moving plate.
  • the various advantages provided by the invention make it possible in particular to compensate possible surface defects between the collecting nozzle and the movable plate, without it being necessary to insert a layer of fresh cement between the collecting nozzle and the movable plate at the time of its first introduction into the support.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP03447047A 2003-03-06 2003-03-06 Montagevorrichtung für einen Sammelausguss Withdrawn EP1454687A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03447047A EP1454687A1 (de) 2003-03-06 2003-03-06 Montagevorrichtung für einen Sammelausguss

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03447047A EP1454687A1 (de) 2003-03-06 2003-03-06 Montagevorrichtung für einen Sammelausguss

Publications (1)

Publication Number Publication Date
EP1454687A1 true EP1454687A1 (de) 2004-09-08

Family

ID=32799239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03447047A Withdrawn EP1454687A1 (de) 2003-03-06 2003-03-06 Montagevorrichtung für einen Sammelausguss

Country Status (1)

Country Link
EP (1) EP1454687A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008188639A (ja) * 2007-02-05 2008-08-21 Kurosaki Harima Corp スライディングノズル装置、並びにこれに使用される下部ノズル及び下プレート
CN102189249A (zh) * 2010-03-19 2011-09-21 维苏维尤斯集团有限公司 用于传输来自冶金容器中的熔融金属的内水口及装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60199556A (ja) * 1984-03-24 1985-10-09 Nippon Kokan Kk <Nkk> コレクタ−ノズルとエアシ−ルパイプとの接続構造
DE3532260A1 (de) * 1984-09-11 1986-03-20 Kurosaki Refractories Co., Ltd., Kitakyushu, Fukuoka Gleit- oder verschiebeduesenvorrichtung
JPS6240959A (ja) * 1985-08-16 1987-02-21 Akechi Ceramics Kk 連続鋳造用ノズル接合部のシ−ル体
US5044533A (en) * 1990-10-01 1991-09-03 Flo-Con Systems, Inc. Clamp for bandless refractory and method
JPH10211570A (ja) * 1997-01-28 1998-08-11 Toshiba Ceramics Co Ltd 鋳造用容器における注湯ノズルの支持装置
DE19906982A1 (de) * 1999-02-19 2000-08-24 Cfi Ceramics For Industry Gmbh Steigrohr für Metallschmelzen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60199556A (ja) * 1984-03-24 1985-10-09 Nippon Kokan Kk <Nkk> コレクタ−ノズルとエアシ−ルパイプとの接続構造
DE3532260A1 (de) * 1984-09-11 1986-03-20 Kurosaki Refractories Co., Ltd., Kitakyushu, Fukuoka Gleit- oder verschiebeduesenvorrichtung
JPS6240959A (ja) * 1985-08-16 1987-02-21 Akechi Ceramics Kk 連続鋳造用ノズル接合部のシ−ル体
US5044533A (en) * 1990-10-01 1991-09-03 Flo-Con Systems, Inc. Clamp for bandless refractory and method
JPH10211570A (ja) * 1997-01-28 1998-08-11 Toshiba Ceramics Co Ltd 鋳造用容器における注湯ノズルの支持装置
DE19906982A1 (de) * 1999-02-19 2000-08-24 Cfi Ceramics For Industry Gmbh Steigrohr für Metallschmelzen

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198713, Derwent World Patents Index; AN 1987-090671, XP002248102 *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 047 (M - 456) 25 February 1986 (1986-02-25) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 225 (M - 609) 22 July 1987 (1987-07-22) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 13 30 November 1998 (1998-11-30) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008188639A (ja) * 2007-02-05 2008-08-21 Kurosaki Harima Corp スライディングノズル装置、並びにこれに使用される下部ノズル及び下プレート
CN102189249A (zh) * 2010-03-19 2011-09-21 维苏维尤斯集团有限公司 用于传输来自冶金容器中的熔融金属的内水口及装置
WO2011113598A1 (en) 2010-03-19 2011-09-22 Vesuvius Group S.A. Inner nozzle for transferring molten metal contained in a metallurgical vessel and device for transferring molten metal
EP2371471A1 (de) * 2010-03-19 2011-10-05 Vesuvius Group S.A Interne Düse für den Transfer von flüssigem Metall in einem Behälter, Einspannsystem für diese Düse und Ausflussvorrichtung
CN102189249B (zh) * 2010-03-19 2014-01-08 维苏维尤斯集团有限公司 用于传输来自冶金容器中的熔融金属的内水口及装置
US8973790B2 (en) 2010-03-19 2015-03-10 Vesuvius Crucible Company Inner nozzle for transferring molten metal contained in a metallurgical vessel and device for transferring molten metal

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