EP1079947A1 - Stopfen für den verschluss von metallschmelze aufnehmenden behältnissen - Google Patents
Stopfen für den verschluss von metallschmelze aufnehmenden behältnissenInfo
- Publication number
- EP1079947A1 EP1079947A1 EP99923554A EP99923554A EP1079947A1 EP 1079947 A1 EP1079947 A1 EP 1079947A1 EP 99923554 A EP99923554 A EP 99923554A EP 99923554 A EP99923554 A EP 99923554A EP 1079947 A1 EP1079947 A1 EP 1079947A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stopper
- plug
- insert sleeve
- plug body
- holding rod
- 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.)
- Granted
Links
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
- B22D41/16—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
-
- 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
- B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt
Definitions
- the invention relates to a stopper for the closure of
- Containers holding molten metal e.g. rod-shaped plug body made of refractory material, which has a hole for the releasable engagement of e.g. has metal support rod for attachment to a lifting mechanism.
- Such a stopper is known, for example, from EP-A-0358535.
- a metal insert sleeve at a distance from the upper end of the rod-shaped plug body must be pressed and burned with it and have a threaded bore coaxial to the bore of the plug body, into which a metal holding rod provided with an external thread is to be screwed.
- this plug is therefore complex and expensive in several respects.
- a plug as a control valve for spouts in metallurgical Schm 'eizgefä in which the through-hole of the plug body on gaseiniriya furnishen upper end has an annular step.
- a seal made of temperature-resistant material lies on the step.
- a metal plug rod protrudes from above into the through hole and lies with an enlarged section on the seal.
- a cylindrical refractory ceramic sleeve is screwed with an external thread in the upper enlarged section of the through hole into a corresponding internal thread of the plug body and is press-fitted against the retaining ring of the plug rod.
- the stopper rod projects with its upper free end over the stopper body and is inserted with its free end below the retaining ring over a partial distance into the through hole of the stopper body.
- This version requires a threaded connection between the ceramic sleeve and the plug body, which complicates the assembly.
- the object of the present invention is to propose a stopper of the type mentioned at the outset, which is simple in construction, easy to assemble and permanently fixable relative to the lifting mechanism.
- a stopper of the type mentioned at the outset for example, in that the holding rod has at its fastening end at least two diametrically opposite locking projections projecting radially outward from the circumference of the holding rod, which by corresponding to each other Angularly offset, adjacent to the bore, longitudinal slots of the plug body can be transferred into an axial position in which the holding rod with the locking projections can be rotated relative to the plug body into a position in which the locking projections move axially towards the upper end of the plug body can snap into locking recesses of the plug body which are offset at an angle to one another.
- a particularly simple embodiment of the invention is realized when the longitudinal slots extend from the upper end of the plug body into a space for rotating the holding rod with the locking projections and the locking recesses open to a downward end face of the plug body.
- the handle bar can be axially clamped in the locking position with respect to the stopper body.
- the support rod can have an external thread for receiving a clamping nut, which is suitable for, if necessary, under Support the intermediate layer of a washer, which may have a larger cross section than the tightening nut, on an upper, preferably flat end face of the plug body.
- a clamping nut which is suitable for, if necessary, under Support the intermediate layer of a washer, which may have a larger cross section than the tightening nut, on an upper, preferably flat end face of the plug body.
- the holding rod has a longitudinal bore extending into the free space of the stopper body and a longitudinal bore of the plug body for the supply of the gas into the molten metal connects to the free space.
- the longitudinal bores in flow connection are preferably aligned axially to one another.
- Locking projections are cone-shaped and positive and / or non-positive, but releasable, can be received in the locking recesses. In this way, a pre-fixation of the support rod in the locking position with respect to the stopper body can already be ensured, so that an axial bracing of the support rod relative to the stopper body may be unnecessary.
- locking projections there are more than two locking projections, these are arranged at the same angular spacing over the circumference of the holding rod. If, for example, three locking projections are provided, these are at an angular distance of 120 °, instead of 180 ° for two locking projections, so that for the transfer of the support rod into its locking position, only a rotation of the support rod by 60 ° is necessary, since the locking recesses are offset by 60 ° from the then three longitudinal slots in the stopper body.
- this can be done in a simple manner, for example, by sealing the holding rod on its periphery with respect to the plug body, in particular by means of a temperature-resistant sealing ring, e.g. in the form of a ceramic, compressible fiber seal, between the washer and the plug body.
- a temperature-resistant sealing ring e.g. in the form of a ceramic, compressible fiber seal
- a stopper according to the invention for the closure of molten metal receptacles for example with a rod-shaped stopper body made of refractory material and with an insert sleeve in the region of the upper end of the stopper body, which is arranged essentially coaxially therewith and a bore for the releasable Engagement of a metal holding rod for attachment to a lifting mechanism, for example, the insert sleeve has a radial circumferential flange at a distance from the upper end of the stopper body, which is suitable for sealingly resting with its upper end face on an associated downwardly facing annular surface of the stopper body.
- the insert sleeve is also shaped or molded in during the manufacture of the stopper body, the circumferential flange being located in a corresponding ring recess in the stopper body or occupying a corresponding ring region of the stopper body.
- the ring area is created when the plug body is fired by burning out a suitable filler material.
- a temperature-resistant sealing ring for example in the form of a ceramic compressible fiber seal, is provided, for example, embedded in the corresponding refractory material.
- the insert sleeve is preferably axially movable relative to the stopper body and, as a result, can be clamped such that the upper end face of the peripheral flange lies sealingly against the associated ring surface of the stopper body.
- the circumferential flange can have a non-circular circumference for engagement in a ring recess of the plug body which is correspondingly non-circular on the outside.
- the flange flanged at one or more points.
- a sealing ring e.g. is arranged in the form of a ceramic compressible fiber seal, there is a corresponding surface pressure to increase the tightness while compressing the sealing ring.
- the insert sleeve be connected to the lower end of the holding rod, e.g. via thread, releasably connectable and the holding rod carries a clamping nut which is accommodated on an external thread and is suitable for supporting itself on the upper end face of the plug body and possibly the insert sleeve, possibly with the interposition of a washer.
- both the support rod and the plug body can be one in this alternative embodiment of the invention Have longitudinal bore for the supply of gas in the molten metal. As previously discussed, the necessary sealing can be provided.
- the insert sleeve In order to give the insert sleeve the required cross-sectional dimensions for absorbing the forces occurring when the lifting mechanism is actuated, it is preferably arranged in an optionally enlarged, blind hole-like end section of the longitudinal bore of the plug body, which widens to form the ring recess.
- the insert sleeve is aligned in its clamping position at its upper end with the upper end of the stopper body or is set back slightly, so that the required degree of sealing of the insert sleeve with respect to the stopper body is achieved in the region of the peripheral flange.
- additional sealing rings can be provided between the mutually assigned end faces of the plug body on the one hand and the washer or clamping nut on the other and / or insert sleeve on the one hand and washer or clamping nut on the other.
- the insert sleeve can consist of metal, for example steel, in the usual way. But it is also possible to use them e.g. to produce refractory material, which preferably has higher strength values than the refractory material of the plug body, in order to be able to withstand the tensile and compressive forces acting when the lifting mechanism is actuated.
- FIG. 1 in a vertical section of an embodiment of the invention
- FIG. 2 shows a plan view of the stopper body from direction A of FIG. 1 after removal of the holding rod
- FIG. 4 is an illustration corresponding to FIG. 1 for an alternative
- FIG 5 shows a vertical section of the upper section of the plug body after a first manufacturing step of molding the insert sleeve into the plug body.
- the stopper for the closure of containers holding molten metal has in this case a rod-shaped stopper body 1 made of refractory material.
- the plug body 1 has an optionally enlarged bore 3 on the end face, which continues essentially coaxially in a longitudinal bore 16, which extends for this gas supply to the molten metal up to the free end of the plug body 1.
- the bore 3 serves for the releasable engagement of a metal holding rod 4, for example, for attachment to a lifting mechanism (not shown) so that the plug can be used as a valve member of a closure on the bottom of the container holding the molten metal.
- the Haltesta ⁇ ge 4 has at its lower fastening end 5 two diametrically opposed, from the circumference of the support rod 4 radially outwardly projecting cylindrical peg-shaped locking projections 6.
- the locking projections 6 can be converted into an axial position by longitudinal slots 7 of the plug body 1 which are offset by 180 ° to one another are, in which the locking projections 6 can be rotated in a space 10 provided below a lower end face 9 of the stopper body 1 with the holding rod 4, in particular into a position in which they have locking recesses 8 open to the lower end face 9 of the insert sleeve 2 are aligned and by pulling the support rod 4 axially upward into these locking recesses 8 and, if necessary, can snap into place. In this way, rotation of the stopper body 1 relative to the holding rod 4 is prevented.
- stopper body 1 and support rod 4 assume a defined axial position with respect to one another.
- both parts can be braced axially against one another.
- the support rod 4 carries an external thread 11 for receiving a clamping nut 12 in any case in an area which protrudes from the plug body 1.
- the clamping nut 12 is suitable for being supported on the upper end face 14 of the plug body 1 with the interposition of a washer 13.
- both the plug body 1 and the holding rod 4 have continuous longitudinal bores 3, 16 and 17 for the supply of the gas.
- the respective bores 3, 6, 17 are in flow connection with one another via the free space 10 and are axially aligned with one another. If there are more than two locking projections 6, these are likewise arranged at the same angular distance over the circumference of the holding rod 4, that is to say, for example, three locking projections 6 at a distance of 120 °.
- the required tightness is achieved in particular when the holding rod 4 is axially clamped on the stopper body 1 by means of the clamping nut 12.
- an insert sleeve 2 at a distance from the upper end of the stopper body 1 has a radial recess 27 projecting into an annular recess 27 adjacent to the longitudinal bore 16
- Circumferential flange 20 which is suitable for sealingly resting with its upper end face 21 on the correspondingly assigned ring surface 23 of the plug body 1.
- a temperature-resistant sealing ring 19 e.g. in the form of a ceramic compressible fiber seal.
- the insert sleeve 2 can be axially clamped relative to the plug body 1.
- the peripheral flange 20 comes to lie in the ring recess 27 of the plug body 1, which has a greater axial height than the peripheral flange 20 itself.
- this is done in that at the Molding or shaping the insert sleeve 2 from metal or metal-coated ceramic material forms a ring body 26 made of a burn-out material, such as polypropylene, which is arranged directly adjacent to the peripheral flange 20 and has the same outside diameter as this.
- the ring body 26 When burning the stopper body 1, the ring body 26 is burned out, so that the circumferential flange 20 in the ring recess 27 and thus the insert sleeve 2 in the end section 18 of the longitudinal bore 16 can move axially relative to the stopper body 1 overall.
- the insert sleeve 2 can be detachably connected to the lower end of the holding rod 4, for example by screwing.
- the holding rod 4 has an external thread 11 and the insert sleeve 2 has an internal thread 25 in its upper region.
- a clamping nut 12 can be accommodated on the external thread 11 of the holding rod 4, which is suitable for interposing a U ⁇ teriegringes 13 on the upper Support end face 14, 15 of the plug body 1 or the insert sleeve 2.
- both the stopper body 1 and the holding rod 4 have continuous longitudinal bores 16, 17 for the supply of a gas into the molten metal.
- the bores 3, 16, 17 mentioned are in flow connection with one another via the ring recess 27 and are axially aligned with one another.
- the insert sleeve 2 is arranged in an enlarged blind hole-like upper end section 18 of the longitudinal bore 16 of the stopper body 1, so that the insert sleeve 2 can be given the required cross-sectional dimensioning.
- the insert sleeve 2 does not need to be made of metal, it can also be formed from metal-coated refractory material and formed together with the remaining part of the stopper body 1, the stopper body 1 in the insert sleeve 2 then preferably made of refractory material of higher quality, ie higher tension - And compressive strength is formed in order to be able to absorb the tensile and compressive forces that occur, which must be transmitted when the lifting mechanism is actuated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Devices For Opening Bottles Or Cans (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01123636A EP1177845B1 (de) | 1998-05-29 | 1999-05-07 | Stopfen für den Verschluss von Metallschmelze aufnehmenden Behältnissen |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823988 | 1998-05-29 | ||
DE19823988A DE19823988C2 (de) | 1998-05-29 | 1998-05-29 | Stopfen für den Verschluß von Metallschmelze aufnehmenden Behältnissen |
PCT/EP1999/003145 WO1999062659A1 (de) | 1998-05-29 | 1999-05-07 | Stopfen für den verschluss von metallschmelze aufnehmenden behältnissen |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01123636.1 Division-Into | 2001-10-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1079947A1 true EP1079947A1 (de) | 2001-03-07 |
EP1079947B1 EP1079947B1 (de) | 2002-07-24 |
Family
ID=7869251
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99923554A Expired - Lifetime EP1079947B1 (de) | 1998-05-29 | 1999-05-07 | Stopfen für den verschluss von metallschmelze aufnehmenden behältnissen |
EP01123636A Expired - Lifetime EP1177845B1 (de) | 1998-05-29 | 1999-05-07 | Stopfen für den Verschluss von Metallschmelze aufnehmenden Behältnissen |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01123636A Expired - Lifetime EP1177845B1 (de) | 1998-05-29 | 1999-05-07 | Stopfen für den Verschluss von Metallschmelze aufnehmenden Behältnissen |
Country Status (6)
Country | Link |
---|---|
EP (2) | EP1079947B1 (de) |
AU (1) | AU4038999A (de) |
DE (3) | DE19823988C2 (de) |
ES (2) | ES2183556T3 (de) |
TW (1) | TW407080B (de) |
WO (1) | WO1999062659A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1106285A1 (de) * | 1999-12-11 | 2001-06-13 | TYK Europe GmbH | Befestigungssystem für eine Stopfenstange |
US6540009B1 (en) | 2000-08-25 | 2003-04-01 | Akechi Ceramics Kabushiki Kaisha | Holding structure for continuous casting long stopper |
CA2319290A1 (en) * | 2000-09-14 | 2002-03-14 | Akechi Ceramics Kabushiki Kaisha | Holding structure for continuous casting long stopper |
ES2268551T3 (es) * | 2004-07-29 | 2007-03-16 | REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG | Dispositivo de tapon alargado. |
AT524495A1 (de) * | 2020-10-09 | 2022-06-15 | Sheffield Hi Tech Refractories Germany Gmbh | Stopfen |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2005311A (en) * | 1934-07-06 | 1935-06-18 | American Sheet & Tin Plate | Stopper rod for ladles |
US4791978A (en) * | 1987-11-25 | 1988-12-20 | Vesuvius Crucible Company | Gas permeable stopper rod |
US4946083A (en) * | 1988-12-29 | 1990-08-07 | Vesuvius Crucible Company | One-piece stopper rod |
GB2228222A (en) * | 1989-01-26 | 1990-08-22 | Thor Ceramics Ltd | Rotor for molten material discharge control valve |
GB2247637B (en) * | 1990-08-11 | 1994-08-10 | Thor Ceramics Ltd | Stoppers for use in molten metal handling |
DE4028793A1 (de) * | 1990-09-11 | 1992-03-12 | Didier Werke Ag | Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess sowie stopfen fuer eine solche einrichtung |
DE4040388A1 (de) * | 1990-12-17 | 1992-07-02 | Didier Werke Ag | Einrichtung zum halten eines stopfens fuer ein metallurgisches gefaess und stopfen hierfuer |
DE9109532U1 (de) * | 1991-08-01 | 1991-10-10 | Radex-Heraklith Industriebeteiligungs AG, Wien | Gasblasender Stopfen |
DE4212450A1 (de) * | 1991-11-26 | 1993-05-27 | Didier Werke Ag | Einrichtung zum halten eines stopfens und stopfen |
DE4324768C1 (de) * | 1993-07-23 | 1994-08-25 | Labod Burkhard | Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung und für die Anordnung geeignete Stopfenstange sowie Verfahren zur Herstellung der Anordnung |
DE4444617A1 (de) * | 1994-12-15 | 1996-06-27 | Burkhard Labod | Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung |
GB9613810D0 (en) * | 1996-07-02 | 1996-09-04 | Foseco Int | Stopper rod |
-
1998
- 1998-05-29 DE DE19823988A patent/DE19823988C2/de not_active Expired - Fee Related
-
1999
- 1999-05-07 DE DE59902127T patent/DE59902127D1/de not_active Expired - Fee Related
- 1999-05-07 EP EP99923554A patent/EP1079947B1/de not_active Expired - Lifetime
- 1999-05-07 ES ES99923554T patent/ES2183556T3/es not_active Expired - Lifetime
- 1999-05-07 EP EP01123636A patent/EP1177845B1/de not_active Expired - Lifetime
- 1999-05-07 AU AU40389/99A patent/AU4038999A/en not_active Abandoned
- 1999-05-07 WO PCT/EP1999/003145 patent/WO1999062659A1/de active IP Right Grant
- 1999-05-07 DE DE59906467T patent/DE59906467D1/de not_active Expired - Fee Related
- 1999-05-07 ES ES01123636T patent/ES2203571T3/es not_active Expired - Lifetime
- 1999-07-08 TW TW088108830A patent/TW407080B/zh active
Non-Patent Citations (1)
Title |
---|
See references of WO9962659A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19823988A1 (de) | 1999-12-09 |
DE59906467D1 (de) | 2003-09-04 |
WO1999062659A1 (de) | 1999-12-09 |
EP1177845A1 (de) | 2002-02-06 |
AU4038999A (en) | 1999-12-20 |
ES2183556T3 (es) | 2003-03-16 |
ES2203571T3 (es) | 2004-04-16 |
TW407080B (en) | 2000-10-01 |
DE59902127D1 (de) | 2002-08-29 |
EP1079947B1 (de) | 2002-07-24 |
DE19823988C2 (de) | 2000-07-20 |
EP1177845B1 (de) | 2003-07-30 |
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