EP2024115A1 - Verfahren und strangführungseinrichtung zum führen eines gegossenen strangs - Google Patents
Verfahren und strangführungseinrichtung zum führen eines gegossenen strangsInfo
- Publication number
- EP2024115A1 EP2024115A1 EP07724297A EP07724297A EP2024115A1 EP 2024115 A1 EP2024115 A1 EP 2024115A1 EP 07724297 A EP07724297 A EP 07724297A EP 07724297 A EP07724297 A EP 07724297A EP 2024115 A1 EP2024115 A1 EP 2024115A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- pore burner
- edge
- edges
- guiding
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 6
- 238000009749 continuous casting Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Classifications
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
Definitions
- the invention relates to a method and a strand guiding device for supporting and guiding a cast strand, in particular made of steel, in formats which have at least one edge.
- the at least one edge of the strand, such as a slab, is heated by supplying energy to prevent stress and / or cracking during deformation.
- the present invention relates to a method and a device for optimum temperature control of such strands whose cross sections are not round or oval but rectangular or polygonal.
- These formats cool, even with uniform exposure to a cooling medium, because of the two-dimensional heat dissipation at the edges more than at the broad sides of the strand.
- peritects and microalloyed heavy plate products are particularly prone to the formation of near-edge transverse cracks on the surface. These are usually based on oscilatonic marks, and are favored by mechanical stress (bending, straightening, roll offset, squeezing) and thermally induced stresses.
- the edges of the strand are heated by supplying energy during re-bending; it is thereby to prevent stress and cracking during rolling.
- the slabs often need to be flamed outside the strand guide by means of burners.
- the known heating of the edges by burners with an open flame can not ensure a uniform heating of the strand.
- the heat transfer from the flame to the edge is influenced by several external circumstances.
- an additional oxidation of the surface is to be feared by incomplete combustion of the energy carrier used in the burner.
- the radiation component in the energy transfer from the energy source to the strand is unstable and relatively small.
- EP 0 183 209 A2 relates to an induction heater for heating the edges of elongated workpieces of flat cross section or of a cross section containing flat or pointed sections.
- the heater or the workpieces are movable relative to each other in said longitudinal direction and the flat coil (s) of the induction heater are arranged to surround at least one edge of the workpiece over a defined length for heating.
- EP 0 183 209 A2 also relates to the use of one or more induction heaters for heating the edges of a slab as it emerges from a continuous casting machine or a strip or sheet emerging from a hot rolling line. The Indutechnischmaschineioinsheizer used in these cases to heat the edges to a temperature which corresponds approximately to the temperature of the remaining areas of the strand.
- JP 2001172721 A relates to a method and a device for the
- the device is arranged between a continuous casting device and a hot rolling device and comprises an induction furnace for heating the edge regions of the strand as well as an induction furnace. Downstream heat-storing oven for heating the surfaces including the side surfaces of the strand.
- the known methods and devices just described serve primarily for the active heating of the edges of continuously cast products after the strand guide and serve to heat a fully solidified product before the rolling deformation.
- the edge cracks that arise in the strand guide during bending or straightening are thus not prevented.
- the object of the invention is to provide an alternative method and an alternative strand guiding device which prevent subcooling of the edge regions of the strand in the region of the strand guide.
- the object is achieved with respect to the method according to the invention in that the edges of the strand are heated in the region of the strand guide by the use of pore burners.
- the core of the solution according to the invention with regard to the method as well as the device thus consists in the use of pore burner fields as an energy source for the targeted heating of the edges of the strand.
- a pore burner is a design of a gas burner. In his case, the combustion reaction of a premixed fuel-air mixture in a porous structure and no longer in an open flame. The result is a flameless, volumetric burn - a glowing foam. Because there is no technological flame-free technology, there is no longer any conventional combustion chamber, but a reactor consisting of a large number of small reactors filled with ceramic foam or other structures.
- the pore burner fields used allow a very well controllable and stable combustion of the energy carrier, a very high degree of conversion of the energy into radiant energy, a uniform and large outflowing combustion gas, a very large control range with respect to the introduced heat energy and a high flexibility in terms of Geometry of the heat application area. It can be specifically raised by the targeted edge heating by the pore burner fields, the temperature at the edges, without affecting the remaining cooling effect of any existing secondary cooling in other areas of the strand. It is thereby avoided a local undercooling, the entire temperature distribution over the strand cross-section already homogenized in the strand guide and reduces the thermal voltage.
- the pore burner fields used are adjusted by zoning the course of the strand and / or the contour of the cast cross-section; This results in a high degree of flexibility of the method according to the invention. That is, the invention can in continuous casting with arbitrary strand guide, ie z. B. in vertical, horizontal, or sheet genanlagen be used.
- each edge is heated via a separate pore burner field adapted to the geometry.
- the juxtaposed edges are heated by a common pore burner field adapted to this geometry.
- the pore burners can be operated independently of any existing secondary cooling in the strand guide device. This means that the pore burners can be operated simultaneously with the secondary cooling, but also with the secondary cooling switched off or not present.
- FIG. 1 is a schematic side view of the erfindungsgze touch strand guide device in a first embodiment with along the narrow side of the strand arranged Porenbrennerfeldem,
- FIG. 2 shows a schematic side view of the strand guiding device according to the invention in a second embodiment along with.
- FIG 3 shows the cross section of the strand with associated pore burner fields in the edge region according to a first embodiment
- Fig. 4 shows the cross section of the strand with associated pore burner field in the edge region according to a second embodiment.
- Figure 1 shows a continuous casting with a mold 4 and a strand guiding device 11 for supporting, guiding and tempering of continuously cast material, in particular steel, hereinafter also referred to as strand 1.
- the strand 1 according to the invention is cast in cross-sectional formats which have at least one edge 2, 3; see Figures 3 and 4.
- the edges 2, 3 are heated on the narrow sides of the strand 1 by the use of large-area pore burner fields 6, see in particular FIGS. 1 and 2.
- the solution according to the invention thus consists in the use of pore burner field 6 as an energy source for the targeted heating of the edges 2, 3 of the strand;
- FIG. 1 shows a first exemplary embodiment with 5 different large rectangular rectangular pore burner fields 6 in the zones 7-1 to 7-5.
- a second embodiment is shown in FIG. 2; there is a division into six zones 7-1 7-6 made, the last pore burner field 7-6 within the
- Straightening device 5 is arranged immediately before the tangent point T.
- the pore burner fields enclose the narrow sides of the strand and are thus adapted to the course in the strand guide.
- FIGS. 3 and 4 of the drawing different design possibilities are shown in FIGS. 3 and 4 of the drawing.
- the carrier element for the pore burner zones 6 is designated by the reference numeral 9 and a frame of the strand guiding device by the reference numeral 10.
- the two-dimensional cooling effect on the strand within the strand guide can be achieved by secondary cooling or simply by contact with the ambient air.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006022690 | 2006-05-16 | ||
DE102006052138A DE102006052138A1 (de) | 2006-05-16 | 2006-11-06 | Verfahren und Strangführungseinrichtung zum Führen eines gegossenen Strangs |
PCT/EP2007/003359 WO2007131584A1 (de) | 2006-05-16 | 2007-04-17 | Verfahren und strangführungseinrichtung zum führen eines gegossenen strangs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2024115A1 true EP2024115A1 (de) | 2009-02-18 |
Family
ID=38163668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07724297A Withdrawn EP2024115A1 (de) | 2006-05-16 | 2007-04-17 | Verfahren und strangführungseinrichtung zum führen eines gegossenen strangs |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2024115A1 (de) |
DE (1) | DE102006052138A1 (de) |
WO (1) | WO2007131584A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2263816A1 (de) * | 2009-06-03 | 2010-12-22 | Concast Ag | Verfahren und Einrichtung zum Führen und Richten des Strangs in einer Stranggiessanlage für grossformatige Rundprofile |
CN102000814B (zh) * | 2010-11-11 | 2013-01-23 | 上海安可科技有限公司 | 钢包烘烤控制中可变双限幅温度串级调节控制系统及方法 |
EP3015192B1 (de) * | 2014-11-03 | 2020-06-03 | LKR Leichtmetallkompetenzzentrum Ranshofen GmbH | Verfahren und Vorrichtung zum Stranggießen einer Leichtmetalllegierung |
DE102014224390A1 (de) * | 2014-11-28 | 2016-06-02 | Sms Group Gmbh | Stranggießanlage für Dünnbrammen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127505A (en) * | 1981-01-22 | 1982-08-07 | Nippon Steel Corp | Direct rolling manufacturing device for steel |
JPS62197254A (ja) | 1986-02-25 | 1987-08-31 | Nippon Steel Corp | 連続鋳造鋳片のエツジ加熱装置 |
SE452085B (sv) * | 1986-03-03 | 1987-11-09 | Asea Ab | Anordning for vermning av emnen, band eller plat |
-
2006
- 2006-11-06 DE DE102006052138A patent/DE102006052138A1/de not_active Withdrawn
-
2007
- 2007-04-17 EP EP07724297A patent/EP2024115A1/de not_active Withdrawn
- 2007-04-17 WO PCT/EP2007/003359 patent/WO2007131584A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007131584A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006052138A1 (de) | 2007-11-22 |
WO2007131584A1 (de) | 2007-11-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20080822 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS SIEMAG AG |
|
17Q | First examination report despatched |
Effective date: 20091007 |
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DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20130617 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20130926 |