EP3707281A1 - AUFHÄNGEVORRICHTUNG FÜR EIN METALLURGISCHES GEFÄß ZUR AUFNAHME VON SCHMELZFLÜSSIGEN METALLEN - Google Patents
AUFHÄNGEVORRICHTUNG FÜR EIN METALLURGISCHES GEFÄß ZUR AUFNAHME VON SCHMELZFLÜSSIGEN METALLENInfo
- Publication number
- EP3707281A1 EP3707281A1 EP18799474.4A EP18799474A EP3707281A1 EP 3707281 A1 EP3707281 A1 EP 3707281A1 EP 18799474 A EP18799474 A EP 18799474A EP 3707281 A1 EP3707281 A1 EP 3707281A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suspension device
- metallurgical vessel
- ribs
- bearing pin
- vessel
- 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.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 66
- 239000002184 metal Substances 0.000 title claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 6
- 238000010276 construction Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 7
- 150000002739 metals Chemical class 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4633—Supporting means
-
- 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
- B22D41/04—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like tiltable
-
- 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
- B22D41/06—Equipment for tilting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4633—Supporting means
- C21C5/464—Trunnion bearings
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/50—Tilting mechanisms for converters
Definitions
- the invention relates to a suspension device for a metallurgical vessel for receiving molten metals, which is arranged on the vessel outer side, comprising at least one bearing journal for tiltably receiving the journal into a bearing stand.
- Converter vessels are exposed during operation to high thermal loads, which can lead to significant thermal expansion and deformation.
- the connection between converter and support ring is realized by a converter suspension, which must compensate for these thermal expansions.
- suspensions which combine the advantages of both suspensions.
- vertical slat elements and horizontal connecting means are used.
- the connecting means can be positioned both below and above the support ring as needed. Since the lamellar elements also share the horizontally acting weight forces take over, the horizontal connection means (links) no longer need to absorb the full horizontal forces and can be dimensioned correspondingly cheaper.
- all suspension elements are in the protected area. The purpose of these elaborate constructions is to decouple the thermal expansion of the vessel from storage.
- the tilting pins of, for example, LD and AOD converters are therefore not attached directly to the vessel, but to a support ring which surrounds the vessel and is connected by means of lamellae, clamping elements and the like with the latter.
- the disadvantage here is that the support ring occupies a large space and is very expensive due to the complex construction in consequence. Furthermore, the assembly and as a result of the operation of such suspended vessels and the maintenance is very high.
- this object is achieved in that the suspension device is connected to the bearing pin such that in the installation position of the journal in the suspension, the end face of the bearing pin is arranged spaced from the outside of the metallurgical vessel.
- the distance between the end face of the journal and the outside of the metallurgical vessel may be formed as a heat-insulating layer.
- the suspension can be formed from a plurality of radially outwardly, radially around the bearing pin arranged around ribs, which are firmly connected to the outside of the metallurgical vessel.
- the ribs may be substantially formed as right triangles, wherein the sides of the one catheter of the ribs are associated with the bearing journal and the sides of the other catheters of the ribs of the outside of the metallurgical vessel.
- the ribs can run tangentially to the outside of the metallurgical vessel.
- the ribs in the region of their right angle may have a semicircular chamfer, which in the installation position of the ribs form an open, radially around the bearing pin circumferential recess (mouse hole).
- the suspension device may be a substantially rectangular box construction, which includes two horizontal and two vertically interconnected ribs in the installed position, which are connected to the outside of the vessel, the bearing pin in the box construction centrally between the Ribs is arranged, and in the box construction over horizontally and vertically arranged bearing pin retaining ribs spaced from the vessel surface is held and the bearing pin retaining ribs only indirectly through the horizontal and vertical ribs of the box structure are connected to the outside of the metallurgical vessel.
- the size of the surface and the volume of the suspension can be designed so that the heat input into the suspension by the heat through the suspension device to the atmosphere surrounding it continuously, so that the temperature difference between the vessel surface and the expected thermal Elongation, especially during operation of the metallurgical vessel, can be compensated.
- the coordinated and previously calculated ratio between the surface size and the volume of the suspension device can ensure that the suspension device does not overheat during operation of the metallurgical vessel and thus can not lead to failure of the suspension device due to heat stress.
- the suspension device can thus also be addressed as a temperature compensation means or as a heat sink, whose mode of action is to deliver the heat introduced into the suspension device as quickly and uniformly as possible back to the surrounding atmosphere. It is important that the heat is essentially introduced only via the directly connected to the vessel ribs.
- the cooling capacity of the suspension device should be such that, when the vessel outside temperature is around 400 ° C, the temperature of the plug during operation of the metallurgical vessel is not more than 80 ° C, preferably around 50 ° C.
- the size of the surface and the volume of the suspension device is designed such that a temperature rise due to heat transfer during operation of the vessel between the arranged in the suspension device Journal and the outside of the metallurgical vessel can be carried out continuously up to a predeterminable maximum temperature.
- the hanger will form a smooth transition with the outside of the metallurgical vessel, thereby reducing a jump in stiffness between the outside of the metallurgical vessel and the vessel fixture.
- the heat generated during operation of the metallurgical vessel should be introduced directly into the vessel attachment directly and only via the ribs firmly connected to the outside of the metallurgical vessel.
- the metallurgical vessel may be an LD, an AOD or a BOF converter.
- Fig. 2 is a schematic representation of the suspension device of FIG. 1 in a vertical section through the temperature compensation means arranged on the metallurgical vessel;
- Fig. 3 is a schematic representation of the suspension device of FIG. 1 in a horizontal section through the at the metallurgical see vessel arranged temperature compensation;
- FIG. 5 shows the suspension device according to FIG. 4 in a vertical sectional representation
- Fig. 6 the suspension device of FIG. 4 in a horizontal sectional view.
- FIG. 1 shows a first embodiment of the suspension device 10 according to the invention, which essentially a plurality of ribs 13 are arranged in the installation position, around its base 12 radially star-shaped around (for the sake of clarity, only one rib with the reference numeral been provided).
- the ribs 13 are firmly connected to the outside 14 of a metallurgical vessel 15.
- the combination of bearing pin 11 and ribs 13 forms the suspension device 10, via which the bearing pin 11 can be firmly and permanently connected to the outside 14 of the metallurgical vessel 15.
- the outer side 14 is assigned a protective hood 17, which is arranged in the installed position above the suspension device 10.
- the bearing journal 11 in this embodiment has a continuous hollow bore 18.
- the distance of the end face 19 of the bearing pin 11 from the outside 14 of the metallurgical vessel 15 may vary and may be determined in advance on the way in which the bearing pin 11 is connected to the ribs 13.
- the distance between the end face 19 to the outside 14 should ideally be so large that the heat input into the bearing pin 11 via heat radiation is as low as possible, while the greatest possible static connection of the bearing pin 11 via the ribs 13 to the metallurgical vessel 15th
- the ribs 13 are formed as rectangular triangles, which in the region of the right angle chamfer 21, in the synopsis of all radially outwardly radially arranged ribs 13 an open around the base 12 circumferential recess (so-called this has been indicated in FIG. 1, form.
- FIG 4 shows a further embodiment of the suspension device 10 according to the invention for the metallurgical vessel 15, with a construction constructed substantially as a rectangular box 23 suspension 10, which is associated with the outer side 14 of the metallurgical vessel 15.
- the basic structure of the box construction 23 is composed of two pairs of ribs 24, 25 and 26, 27 together.
- the rib pairs 24, 25 are oriented horizontally in the installed position and the rib pairs 26, 27 are arranged vertically thereto. Both pairs of ribs 24, 25 and 26, 27 are fixedly connected to the outer side 14.
- the journal 11 also has in this embodiment an axially extending hollow bore 18 which, however, is not continuous in this embodiment, as shown in Figures 5 and 6, and ends in the solid base 12 of the journal 11.
- the horizontally arranged rib pair 24, 25 has two free ends 28, 29 and 38, 39, respectively.
- the free ends 28, 29 and 38, 39 have a convex curvature and thus form a smooth transition with the outside 14 of the metallurgical vessel 15.
- the trunnion 11 is centrally located in the box structure 23 and is at its base 12 in the box construction 23 via horizontally disposed bearing pin retaining ribs 30, 31 and 32, 33 and vertically arranged bearing pin retaining ribs 34, 35 and 36, 37 spaced from the outside 14 (surface of the metallurgical vessel 15) in the box construction 23.
- the bearing pin retaining ribs 30, 31 and 32, 33 and 34, 35 and 36, 37 are only indirectly via the horizontal and vertical pairs of ribs 24, 25 and 26, 27 of the box construction 23 connected to the outside 14 of the metallurgical vessel 15. In this way, a gap 20 is formed, which in turn forms a heat-insulating air layer and so a direct heat transfer between the end face 19 of the bearing pin 11 and the outside 14 can be effectively prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017126153.2A DE102017126153A1 (de) | 2017-11-08 | 2017-11-08 | Aufhängevorrichtung für ein metallurgisches Gefäß zur Aufnahme von schmelzflüssigen Metallen |
| PCT/EP2018/079833 WO2019091844A1 (de) | 2017-11-08 | 2018-10-31 | AUFHÄNGEVORRICHTUNG FÜR EIN METALLURGISCHES GEFÄß ZUR AUFNAHME VON SCHMELZFLÜSSIGEN METALLEN |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3707281A1 true EP3707281A1 (de) | 2020-09-16 |
Family
ID=64172469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18799474.4A Pending EP3707281A1 (de) | 2017-11-08 | 2018-10-31 | AUFHÄNGEVORRICHTUNG FÜR EIN METALLURGISCHES GEFÄß ZUR AUFNAHME VON SCHMELZFLÜSSIGEN METALLEN |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3707281A1 (de) |
| DE (1) | DE102017126153A1 (de) |
| WO (1) | WO2019091844A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE209984C1 (de) * | ||||
| US3561744A (en) * | 1969-05-27 | 1971-02-09 | Pennsylvania Engineering Corp | Stabilized mounting for boflike vessels |
| AT322127B (de) * | 1972-03-15 | 1975-05-12 | Voest Ag | Kippbarer tiegel oder konverter |
| DE2901011B1 (de) * | 1979-01-12 | 1979-12-13 | Berninghaus Fa Ewald | Lagerzapfenbefestigung fuer Giesspfannen in Huettenwerken |
| DE19938202C2 (de) * | 1998-08-18 | 2001-10-31 | Mannesmann Ag | Metallurgisches Gefäß |
| DE10006771C2 (de) * | 1999-02-11 | 2001-11-29 | Mannesmann Ag | Gefäß für metallurgische Zwecke |
| DE10033966C1 (de) * | 2000-07-06 | 2001-10-25 | Mannesmann Ag | Gefäss für metallurgische Zwecke |
| DE10050835C1 (de) * | 2000-10-05 | 2001-12-20 | Mannesmann Ag | Metallurgisches Gefäß und Verfahren zur Herstellung desselben |
-
2017
- 2017-11-08 DE DE102017126153.2A patent/DE102017126153A1/de active Pending
-
2018
- 2018-10-31 EP EP18799474.4A patent/EP3707281A1/de active Pending
- 2018-10-31 WO PCT/EP2018/079833 patent/WO2019091844A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017126153A1 (de) | 2019-05-09 |
| WO2019091844A1 (de) | 2019-05-16 |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS GROUP GMBH |