EP0826446B1 - Metallurgisches Gefäss zum Transport, Zwischenspeichern oder Dosieren flüssiger, metallischer Schmelzen und Verfahren zu dessen Herstellung - Google Patents
Metallurgisches Gefäss zum Transport, Zwischenspeichern oder Dosieren flüssiger, metallischer Schmelzen und Verfahren zu dessen Herstellung Download PDFInfo
- Publication number
- EP0826446B1 EP0826446B1 EP97250252A EP97250252A EP0826446B1 EP 0826446 B1 EP0826446 B1 EP 0826446B1 EP 97250252 A EP97250252 A EP 97250252A EP 97250252 A EP97250252 A EP 97250252A EP 0826446 B1 EP0826446 B1 EP 0826446B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vessel
- plane
- metallurgical vessel
- circumferential surface
- tap hole
- 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
Links
- 239000002184 metal Substances 0.000 title claims description 6
- 229910052751 metal Inorganic materials 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 150000002739 metals Chemical class 0.000 title 1
- 238000000034 method Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 7
- 239000011470 perforated brick Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000510672 Cuminum Species 0.000 description 1
- 235000007129 Cuminum cyminum Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
Definitions
- the invention relates to a metallurgical vessel for transport, intermediate storage or dosing liquid, metallic melts according to the preamble of Claim 1 and its production.
- a generic metallurgical vessel is known from US Pat. No. 4,746,102. It has a truncated cone-shaped jacket and a slightly oblique to Taphole floor.
- the tap hole which is a trough-shaped depression and has an exit hole, is twice offset to the center of symmetry of the Vessel arranged.
- To increase the outflow of the residual melt in the vessel an inclined top surface on the vessel bottom formed by the brick lining having intermediate floor arranged, the inclination towards the tap hole is directed.
- the end of the intermediate floor is just cut off and goes with a paragraph in the bottom of the vessel. Because the bottom of the vessel over the tap hole is slagged at a very early stage by the Tapped hole.
- the sharp-edged transition from the floor to the coat is unfavorable in terms of voltage, so that the overall load capacity is reduced accordingly becomes.
- a comparable metallurgical vessel is known from DE-PS 28589. This The vessel has one in the deepest area of the bottom and is offset from the axis of symmetry of the Vessel lying tap hole on. The upper and middle area of the vessel is slightly conical, so that in a first approximation the cross-sectional area in this area is almost constant, while in the floor area the cross-sectional area is continuous becomes lower. There is no information about the exact design of the floor, because only a vertical section is shown and the description does not contain any information are.
- US-A 2,472,456 is the shape of the lining of a metallurgical vessel disclosed. It consists of a circular cylindrical tube forming the side walls Made of graphite or comparable materials, the one in the floor area has circular cylindrical recess. It is separated into this recess manufactured flat bottom used. The bottom has one on the top trough-shaped depression, at the deepest point of which there is an outlet hole is appropriate. A circular perforated brick is arranged in the outlet bore. about there is no information on the exact design of the floor, as only a vertical section is shown and there are no indications in the description.
- FR-A-2095982 shows a special form of lining in the floor area. Also this bottom area has a trough-shaped depression, at its deepest point an outlet opening is arranged. This outlet opening is strongly offset from arranged y-plane of symmetry and has a polygonal perforated brick.
- the Bottom surface is radiating from the perforated brick, strong ascending sectors and circumferentially in, the polygonality of the perforated brick accordingly, running, having an equal distance from each other Split polygonal trains.
- almost rectangular Strips are cuboid bodies made of refractory material. At the Transition from one sector to the next must have a trapezoidal surface Bodies with sloping side surfaces are used to the Bridge when changing from one sector to another. The remaining gaps in the end area of the circular vessel are covered with Pounded mass filled.
- EP 0 547 940 A1 Another embodiment of the lining of a metallurgical vessel in The floor area is shown in EP 0 547 940 A1.
- An octagonal, flat keystone used from which radially slightly rising sectors extend to the edge of the vessel.
- the outer surfaces of the octagonal keystone are at an angle to the outside a beveled.
- the bottom area has two openings, one of which is at the Vessel rim in the plane of symmetry in the x direction and the second opening in Transition area from the octagonal keystone to the sector offset twice to the is arranged in the x and y directions of the plane of symmetry.
- One of the openings is intended for the arrangement of the tap hole.
- the object of the invention is for a metallurgical vessel for transportation, Intermediate storage or dosing of liquid, metallic melts, especially for a steel mill to define a contour in the floor area, so that in compliance with the strict purity level regulations, the residual melt that can no longer be used is lower in comparison to the known prior art.
- the contour of the floor area is achieved by an intersection two or more defined basic geometrical shapes to be cut formed, the height of the inclined characterizing the degree of inclination straight surface is equal to the diameter of the outlet hole.
- the resulting contour of the intersection according to the invention Floor area can be optimized so that the remaining volume of the liquid Metal melt in the vicinity of the tap hole as small as possible and the distance to the lower edge of the slag level is as large as possible. That way you can still good and uncontaminated molten metal can be used for the casting, so that the yield is significantly increased.
- the previous known method which tilts the vessel by a few degrees at the end of the run-out process and The disadvantage of a shifting of the pouring stream can thus be eliminated.
- the filling volume of the vessel in connection with the invention trained floor is particularly favorable if the cross-sectional area in Mantle area is oval or elliptical.
- the cross-sectional area represents a special case whose outer contour is two semicircles, each with a straight line in between Section. A cylindrical one has also proven to be favorable Coat area highlighted.
- the vessel 1 has one in the jacket region 2 Cross-sectional area, whose outer contour is a mirror image of the vertical lying symmetry axis 3 arranged three-part circular arc corresponds. This consists of two similar quarter arcs with a small radius 4.1, 4.1 'and a very large radius circular arc section 4.2, that merges tangentially into the first two quarter arcs 4.1, 4.1 '. On This creates an oval cross-sectional area, which is a large filling volume means. In the deepest area of the floor there is a double offset to the a two tap holes 6, a tap hole 6 arranged in the middle Has exit hole 7.
- the contour of the base area 8 according to the invention is formed by the intersection of a Riempelêt 9, in Figure 2 by the dash-dotted lines indicated, with a plane inclined to tap hole 6.
- the advantage of this training is that the remaining amount 10 small and the height 11 to to the bottom edge 12 (dashed line) of the slag level is large.
- the vessel can be emptied to an unavoidable residue, so that the yield is correspondingly high. So that in the area of tap hole 6 neither a dynamic pressure, another suction arises, it is essential to the invention that the Inclination of the straight flat surface 13 characterizing height 15 is the same the diameter of the exit hole 7.
- the inclination of the straight flat surface 13 to tap hole 6 is indicated by an open arrow 14.
- the oval cross-sectional area selected arises when Pulling the two halves of symmetry 17.1, 17.2 gussets 18, 19 apart the welding of the straight flat surface 13 and the pipe weft trained tap hole 6 covered by appropriate trained metal sheets become.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
- Figur 1
- eine Innenansicht eines erfindungsgemäß ausgebildeten metallurgischen Gefäßes
- Figur 2
- einen Schnitt in Richtung A-B in Figur 1
- Figur 3
- einen Schnitt in Richtung C-D in Figur 1
Claims (10)
- Metallurgisches Gefäß (1) zum Transport, Zwischenspeichern oder Dosieren flüssiger metallischer Schmelzen mit einer feuerfesten Ausmauerung und einem im tiefsten Bodenbereich (8) und zweifach versetzt zu den in x- und y-Richtung liegenden Symmetrieebenen (3,5) des Gefäßes (1) angeordneten, ein Austrittsloch (7) aufweisenden Abstichlocheinsatz (6), wobei die Kontur des Bodenbereiches (8) durch definierte geometrische Grundformen gebildet wird und der Bodenbereich (8) eine zum Abstichlocheinsatz (6) hin geneigte gerade Fläche (13) aufweist,
dadurch gekennzeichnet,
daß die Kontur des nach unten gewölbten Bodenbereiches (8) eine Verschneidung dreier zum Schnitt gebrachter definierter geometrischer Grundformen aufweist, wobei die den Grad der Neigung charakterisierende Höhe (15) der geneigten geraden Fläche (13) gleich ist dem Durchmesser (16) des Austrittsloches (7). - Metallurgisches Gefäß nach Anspruch 1,
dadurch gekennzeichnet,
dass der an dem Bodenbereich (8) nach oben hin anschließende Mantelbereich (2) des Gefäßes zylindrisch ist. - Metallurgisches Gefäß nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
dass ein an den Mantelbereich (2) des Gefäßes (1) anschließender Kugelabschnitt mit einer Ebene zum Schnitt gebracht wird, wobei die Ebene zum Abstichloch (6) hin geneigt ist. - Metallurgisches Gefäß nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
daß eine an den Mantelbereich (2) des Gefäßes (1) anschließende Kugelkappe mit einer Ebene zum Schnitt gebracht wird, wobei die Ebene zum Abstichloch (6) hin geneigt ist. - Metallurgisches Gefäß nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
dass ein an den Mantelbereich (2) des Gefäßes (1) anschließender Kümpelboden (9) mit einer Ebene (13) zum Schnitt gebracht wird, wobei die Ebene (13) zum Abstichloch (6) hin geneigt ist. - Metallurgisches Gefäß nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
dass das Gefäß (1) im an den Bodenbereich (8) anschließenden Mantelbereich (2) eine Querschnittsfläche aufweist, deren äußere Kontur zwei Halbkreise mit je einem dazwischenliegenden geraden Abschnitt aufweist. - Metallurgisches Gefäß nach einem der Ansprüche 1 - 5,
dadurch gekennzeichnet,
dass das Gefäß (1) im an den Bodenbereich (8) anschließenden Mantelbereich (2) eine Querschnittsfläche aufweist, deren äußere Kontur einem spiegelbildlich angeordneten dreiteiligen Kreisbogen (4.1, 4.1', 4.2) entspricht. - Metallurgisches Gefäß nach einem der Ansprüche 1 - 5,
dadurch gekennzeichnet,
dass das Gefäß (1) im an den Bodenbereich (8) anschließenden Mantelbereich (2) eine elliptische Querschnittsfläche aufweist. - Verfahren zur Herstellung eines metallurgischen Gefäßes (1) zum Transport, Zwischenspeichern oder Dosieren flüssiger, metallischer Schmelzen mit einer feuerfesten Ausmauerung nach einem der Ansprüche 1-8, bei dem ein Mantel (2) und ein nach unten gewölbter, einen Abstichlocheinsatz (6) aufweisender Boden (8) durch Schweißnähte miteinander verbunden werden,
dadurch gekennzeichnet,
daß nach der Anformung des Bodens durch einen zur Horizontalebene schräg liegenden Schnitt eine große Öffnung im Boden gebildet wird und im Randbereich dieses Schnittes eine wesentlich kleinere kreisrunde Öffnung angebracht wird, deren Achse senkrecht zur Horizontalebene liegt und anschließend in die große Öffnung eine gerade ebene Fläche (13) und in die kleinere Öffnung ein den Abstichlocheinsatz (6) bildender Rohrschuß eingeschweißt werden. - Verfahren nach Anspruch 9,
dadurch gekennzeichnet,
daß vor dem Einschweißen der geraden ebenen Fläche (13) und des Rohrschusses der Boden in der in x-Richtung liegenden Symmetrieebene (5) geteilt wird und beide Hälften um einen vorgegebenen Betrag auseinander gezogen werden und zusätzlich zur geraden ebenen Fläche (13) und des Rohrschusses die sich durch das Auseinanderziehen ergebenden Zwickel (18,19) durch Einschweißen entsprechender Bleche abgedeckt werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19636323 | 1996-08-29 | ||
DE19636323 | 1996-08-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0826446A1 EP0826446A1 (de) | 1998-03-04 |
EP0826446B1 true EP0826446B1 (de) | 2000-08-09 |
Family
ID=7804892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97250252A Expired - Lifetime EP0826446B1 (de) | 1996-08-29 | 1997-08-29 | Metallurgisches Gefäss zum Transport, Zwischenspeichern oder Dosieren flüssiger, metallischer Schmelzen und Verfahren zu dessen Herstellung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0826446B1 (de) |
AT (1) | ATE195275T1 (de) |
DE (2) | DE59702131D1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19802222C2 (de) * | 1998-01-22 | 2002-08-08 | Intocast Ag Feuerfest Produkte | Behälter für metallurgische Schmelzen |
WO2000010754A1 (de) * | 1998-08-18 | 2000-03-02 | Mannesmannröhren-Werke Ag | Metallurgisches gefäss |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2095982A5 (de) * | 1970-06-13 | 1972-02-11 | Didier Werke Ag | |
EP0547940A1 (de) * | 1991-12-17 | 1993-06-23 | Societe Des Terres Refractaires Du Boulonnais | Auskleidungsbeschichtung für Gefäss wie zum Beispiel Giesspfanne |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE28589C (de) * | H. A. BRUSTLEIN in Firminy, Loire, Frankreich | Apparat zum Giefsen von Metall | ||
US2067883A (en) * | 1936-02-18 | 1937-01-19 | Pennsylvania Engineering Works | Ladle structure |
US2472456A (en) * | 1945-03-20 | 1949-06-07 | Robert J Anicetti | Crucible and method of making crucibles |
US4746102A (en) * | 1987-03-20 | 1988-05-24 | Bethlehem Steel Corporation | Drain hole design for ladle |
-
1997
- 1997-08-29 DE DE59702131T patent/DE59702131D1/de not_active Expired - Lifetime
- 1997-08-29 EP EP97250252A patent/EP0826446B1/de not_active Expired - Lifetime
- 1997-08-29 DE DE19738709A patent/DE19738709C2/de not_active Expired - Fee Related
- 1997-08-29 AT AT97250252T patent/ATE195275T1/de not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2095982A5 (de) * | 1970-06-13 | 1972-02-11 | Didier Werke Ag | |
EP0547940A1 (de) * | 1991-12-17 | 1993-06-23 | Societe Des Terres Refractaires Du Boulonnais | Auskleidungsbeschichtung für Gefäss wie zum Beispiel Giesspfanne |
Also Published As
Publication number | Publication date |
---|---|
ATE195275T1 (de) | 2000-08-15 |
DE59702131D1 (de) | 2000-09-14 |
EP0826446A1 (de) | 1998-03-04 |
DE19738709C2 (de) | 1999-03-11 |
DE19738709A1 (de) | 1998-03-05 |
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