EP1982134B1 - Rollenherdofen zum aufheizen und/oder temperaturausgleichen von stranggiessprodukten aus stahl oder stahllegierungen und dessen anordnung vor einer warmband-fertigwalzstrasse - Google Patents

Rollenherdofen zum aufheizen und/oder temperaturausgleichen von stranggiessprodukten aus stahl oder stahllegierungen und dessen anordnung vor einer warmband-fertigwalzstrasse Download PDF

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Publication number
EP1982134B1
EP1982134B1 EP06829688A EP06829688A EP1982134B1 EP 1982134 B1 EP1982134 B1 EP 1982134B1 EP 06829688 A EP06829688 A EP 06829688A EP 06829688 A EP06829688 A EP 06829688A EP 1982134 B1 EP1982134 B1 EP 1982134B1
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EP
European Patent Office
Prior art keywords
hearth furnace
roller
roller hearth
furnace
outlet side
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.)
Active
Application number
EP06829688A
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German (de)
English (en)
French (fr)
Other versions
EP1982134A1 (de
Inventor
Christoph Klein
Dieter Hofmann
Frank Benfer
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.)
SMS Siemag AG
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SMS Siemag AG
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 SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP1982134A1 publication Critical patent/EP1982134A1/de
Application granted granted Critical
Publication of EP1982134B1 publication Critical patent/EP1982134B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • 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
    • B22D11/14—Plants for continuous casting
    • B22D11/142—Plants for continuous casting for curved casting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the invention relates to a roller hearth furnace for heating and / or temperature compensation of continuous casting products, which in particular consist of steel or steel materials and can be loaded and unloaded in furnace-like partial lengths on rolls through the furnace chamber, and a method for using the roller hearth furnace before a hot strip finishing train, in the hot strip, etc. rolled, cooled and wound in a coiler station to wound coils.
  • roller hearth furnaces are very long and associated with thermal losses and cause by the long-term resting on the rollers by Zundaufbackept impressions on the continuous casting product bottom, which later lead during rolling to a reduced quality of the rolling stock, especially rolled strip.
  • Roller hearth furnaces for heating and / or temperature compensation of continuous casting products are known from the documents IT IT 1 236 130 B .
  • WO 94/18514 A and DE 35 25 457 A1 known.
  • a change in the thermal efficiency is not possible with these roller hearth furnaces.
  • the invention has for its object to improve the conventional roller hearth furnace to the extent that a reduction in its length and a shortening of an entire system (such as. A CSP / Compact Strip Production) consisting of continuous casting and hot strip finishing mill achieved at a better thermal efficiency and thus saving energy. At the same time, less damaging impressions should be created on the continuous casting bottom.
  • the stated object is achieved according to the invention in a roller hearth furnace according to the preamble of claim 1, characterized in that the first roller row running in the longitudinal direction of the furnace and / or the second roller row each form a heating zone.
  • This will provide improved thermal efficiency and supports the energy savings.
  • the slabs can be heated more if necessary. This is an extension of the product range of the casting-rolling plant connected.
  • Another embodiment for improving the temperature level is that in the buffer zone, a further, switchable heating zone and / or a warming zone are provided.
  • the lifting elements may consist of lifting bars according to a further feature of the invention.
  • Thin slabs which after heating and / or temperature compensation in the roller hearth furnace in a hot strip finishing rollers (descaled, cut to a partial length Rolled to hot strip, cooled and wound in a coiler station to wound coils, is carried out according to another invention in that in a multi-strand casting a common roller hearth furnace or a separate roller hearth furnace per strand, each with an inlet side and an outlet side of parallel rows of rollers and a provided between these lying buffer zone of lifting elements for the subsequent common process route.
  • the advantages are the shortening of the whole plant and the energy-saving and thus the improved thermal efficiency and the mechanical improvements.
  • the outlet side of a roller hearth furnace jointly provided for a two-strand casting installation be placed in the line of the subsequent process route, so that a mirror-image position of two inlet sides with the same rows of rollers and a central outlet side with a row of rollers.
  • the following hot strip finishing train can thus be supplied at shorter intervals with partial lengths of the casting strand.
  • a third alternative envisages that for a multi-strand caster and a separate roller hearth furnace, a ferry operatively connecting both roller hearth furnaces will be provided at the outlet side and before the following process route. As a result, a partial length of the following process route can be supplied by both casting plants of a two-strand casting plant.
  • the invention also takes into account a conventional roller hearth furnace which is present in front of a single- or multi-strand continuous casting plant and which can be further used in addition to a roller hearth furnace with an inlet and outlet side and a buffer zone consisting of lifting elements, a roller hearth furnace operating in parallel in the longitudinal direction and that the roller hearth furnaces connect to another, connected to the following process route roller hearth furnace with inlet side and parallel outlet side and a buffer zone arranged therebetween of lifting elements (fourth alternative).
  • a conventional roller hearth furnace which is present in front of a single- or multi-strand continuous casting plant and which can be further used in addition to a roller hearth furnace with an inlet and outlet side and a buffer zone consisting of lifting elements, a roller hearth furnace operating in parallel in the longitudinal direction and that the roller hearth furnaces connect to another, connected to the following process route roller hearth furnace with inlet side and parallel outlet side and a buffer zone arranged therebetween of lifting elements (fourth alternative).
  • CSP compact caster rolling mill
  • the roller hearth furnace 1 ( Fig. 1 ) is used for heating and / or keeping warm and / or temperature equalization of continuous casting 2 ( Fig. 2 to 5 ), which are cast from slab or flat thin strands 3 (so-called thin slabs).
  • continuous casting 2 ( Fig. 2 to 5 )
  • Fig. 2 to 5 continuous casting 2
  • the cast strand 6a formed in the continuous casting mold 6 is cooled and further cooled in a back-up roll stand 7 and supported.
  • the respective continuous casting product 2 is freed of scale in a descaling device 8 and cut in a pair of scissors 9 to partial lengths 10 of several meters in length.
  • the oven and roll-fair part lengths 10 are determined by the strand dimensions and the following rolling process.
  • the partial lengths 10 become ( Fig. 1 ) on an inlet side 11 via a first, in the longitudinal direction 12 of the furnace 1 extending roller row 13 transported.
  • the length of the rollers 13a corresponds to the width of the continuous casting product 2 with a surcharge.
  • a second row of rollers 15 is arranged on an outlet side 14, which is also formed from such rollers 13a.
  • the continuous casting products leave the row of rollers 15 on the outlet side 14 in the longitudinal direction 12.
  • a buffer zone 16 is formed, which consists of not shown lifting elements 17.
  • the lifting elements 17 provide for the transverse transport of the continuous casting product 2 in the direction of arrow 18.
  • the first, in the longitudinal direction 12 extending roller row 13 and / or the second row of rollers 15 form a heating zone 19 of conventional heaters, such as. Gas burners, induction heaters u.
  • a further, switchable heating zone 19 and / or a warming zone may be provided.
  • the lifting elements 17 consist of conventional lifting beam 17 a.
  • the shear 9 is followed by a described roller hearth furnace 1 per casting strand, with different embodiments of the arrangement being alternatively provided.
  • On the outlet side 14 is located in the example of Fig. 4 a ferry 20 to connect a two-strand caster via an emergency shear 21, another descaling device 22 in front of a multi-stand hot strip finishing train 23.
  • the metal strip After rolling to thin hot strip 24, the metal strip is cooled in a cooling section 25 to steel strip with a corresponding structure and wound in a coiler station 26 to wound coils 27.
  • the process route 28 of the rolling is so far in all embodiments of the Fig. 2 to 5 equal.
  • Fig. 2 is in a multi-strand caster 29 each have a separate roller hearth furnace 1 (according to the invention, a so-called. Roll-stroke hearth furnace) as to Fig. 1 described, arranged per string.
  • the partial lengths 10 are transported by each roller hearth furnace 1 laterally in the line of the process route 28 (first alternative).
  • Fig. 4 Although two separate roller hearth furnaces 1 are provided for each strand, which are not on the line of the subsequent process route 28. Therefore, the partial lengths 10 are transported via the ferry 20 on the line of the common process route 28 (third alternative).
  • Fig. 5 shows that on a (left) strand following a longitudinally working roller hearth furnace 30, is used and the roller hearth furnace 1 according to the invention for the other (right) strand core is used.
  • the partial lengths 10 can then be conveyed again together via a roller-hearth furnace according to the invention until the following process route 28 (fourth alternative).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metal Rolling (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP06829688A 2006-02-08 2006-12-18 Rollenherdofen zum aufheizen und/oder temperaturausgleichen von stranggiessprodukten aus stahl oder stahllegierungen und dessen anordnung vor einer warmband-fertigwalzstrasse Active EP1982134B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006005635A DE102006005635A1 (de) 2006-02-08 2006-02-08 Rollenherdofen zum Aufheizen und/oder Temperaturausgleichen von Stranggiessprodukten aus Stahl oder Stahllegierung und dessen Anordnung vor einer Warmband-Fertigwalzstrasse
PCT/EP2006/012164 WO2007090455A1 (de) 2006-02-08 2006-12-18 Rollenherdofen zum aufheizen und/oder temperaturausgleichen von stranggiessprodukten aus stahl oder stahllegierungen und dessen anordnung vor einer warmband-fertigwalzstrasse

Publications (2)

Publication Number Publication Date
EP1982134A1 EP1982134A1 (de) 2008-10-22
EP1982134B1 true EP1982134B1 (de) 2011-03-16

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EP06829688A Active EP1982134B1 (de) 2006-02-08 2006-12-18 Rollenherdofen zum aufheizen und/oder temperaturausgleichen von stranggiessprodukten aus stahl oder stahllegierungen und dessen anordnung vor einer warmband-fertigwalzstrasse

Country Status (18)

Country Link
US (1) US8376734B2 (zh)
EP (1) EP1982134B1 (zh)
JP (1) JP2009525874A (zh)
KR (1) KR101146931B1 (zh)
CN (1) CN101365918B (zh)
AR (1) AR059363A1 (zh)
AT (1) ATE502271T1 (zh)
AU (1) AU2006337956B2 (zh)
BR (1) BRPI0621316A2 (zh)
CA (1) CA2637464C (zh)
DE (2) DE102006005635A1 (zh)
EG (1) EG24856A (zh)
MY (1) MY149470A (zh)
RU (1) RU2387935C2 (zh)
TW (1) TWI381142B (zh)
UA (1) UA90782C2 (zh)
WO (1) WO2007090455A1 (zh)
ZA (1) ZA200806469B (zh)

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Publication number Publication date
WO2007090455A1 (de) 2007-08-16
AR059363A1 (es) 2008-03-26
ZA200806469B (en) 2009-03-25
US20090298001A1 (en) 2009-12-03
KR101146931B1 (ko) 2012-05-22
US8376734B2 (en) 2013-02-19
DE502006009129D1 (de) 2011-04-28
AU2006337956B2 (en) 2011-07-21
BRPI0621316A2 (pt) 2011-12-06
TWI381142B (zh) 2013-01-01
EP1982134A1 (de) 2008-10-22
JP2009525874A (ja) 2009-07-16
AU2006337956A1 (en) 2007-08-16
AU2006337956A2 (en) 2008-09-25
CA2637464C (en) 2012-06-05
CN101365918B (zh) 2012-11-14
ATE502271T1 (de) 2011-04-15
RU2387935C2 (ru) 2010-04-27
DE102006005635A1 (de) 2007-08-09
EG24856A (en) 2010-10-31
MY149470A (en) 2013-08-30
TW200730783A (en) 2007-08-16
KR20080091779A (ko) 2008-10-14
UA90782C2 (ru) 2010-05-25
CN101365918A (zh) 2009-02-11
CA2637464A1 (en) 2007-08-16

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