EP1330321A1 - Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format - Google Patents
Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-formatInfo
- Publication number
- EP1330321A1 EP1330321A1 EP01980448A EP01980448A EP1330321A1 EP 1330321 A1 EP1330321 A1 EP 1330321A1 EP 01980448 A EP01980448 A EP 01980448A EP 01980448 A EP01980448 A EP 01980448A EP 1330321 A1 EP1330321 A1 EP 1330321A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- casting
- section
- cross
- soft reduction
- 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
- 238000000034 method Methods 0.000 title claims description 19
- 229910000831 Steel Inorganic materials 0.000 title claims description 11
- 238000009749 continuous casting Methods 0.000 title claims description 11
- 239000010959 steel Substances 0.000 title claims description 11
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 238000007711 solidification Methods 0.000 claims abstract description 21
- 230000008023 solidification Effects 0.000 claims abstract description 21
- 238000005266 casting Methods 0.000 claims description 73
- 239000007921 spray Substances 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 12
- 238000011946 reduction process Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000007787 solid Substances 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
-
- 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
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of 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
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
Definitions
- the invention relates to a method and an apparatus for continuous casting and subsequent shaping of a casting strand made of steel, in particular a casting strand with block format or pre-profile format, in which the secondary cooling and the strand guidance are adapted to the cooling state of the casting strand cross section.
- the invention has for its object to coordinate secondary cooling, strand support and deformation temperatures so that even very difficult to cast steel grades can be cast, namely all steel grades in which segregations and porosities are important for further processing and the end use and also measures besides one
- the object is achieved according to the invention in that the geometric shape of the secondary cooling is adapted analogously to the solidification profile of the casting strand at the following path length of the casting strand, and that the strand support is also reduced analogously depending on the solidification profile of the casting strand at the following path length.
- the strand support can be adapted to the strand shell growth on all sides by the roller box length being equal to or less than the sump width, edge cooling being avoided. This significantly improves the casting material in the structure and on the surface.
- the corner regions of the casting strand cross section are cooled less with increasing path length than the central regions.
- the individual sides are cooled with less water to optimize the temperature distribution in the strand cross-section, whereby a subsequent soft reduction process is also influenced.
- the spray jets in the secondary cooling are adapted with their spray angle to the strand shell thickness in such a way that a smaller spray angle is assigned to a narrowing sump width.
- the secondary cooling in the spray angle is adapted to the growth of the strand shell and an optimal temperature distribution is established in the strand cross section and also on the surface, with a slight temperature drop being achieved at the edges.
- a similar effect can be achieved with a decreasing width of the sump by changing the distance between the spray nozzles generating the spray jets and the strand surface as a function of the solidification profile.
- the top side of the strand and the bottom side of the strand are selectively cooled more intensively with coolant.
- the central areas are particularly considered for this, so that a further reduction in the width of the sump occurs.
- the surface is cooled as a harder and more rigid deformation surface for the soft reduction process in front of the soft reduction segment.
- the casting strand cross section After the temperature in the strand cross section has been considerably homogenized over layers of the strand cross section, it is advantageous for the casting strand cross section to be rolled from top to bottom in accordance with the so-called soft reduction process.
- a device for continuous casting and subsequent deformation of a casting strand made of steel, in particular a casting strand with block format, the secondary cooling and the strand guide being adaptable to the cooling state of the casting strand cross section achieves the object according to the invention in that the secondary cooling begins as a function of the solidification profile and the path length can be carried out with essentially the full strand width and that the secondary cooling and the strand support can be reduced within the path length depending on the solidification profile of the casting strand so that the casting strand only enters the bottom of the strand width before entering a soft reduction segment is supported.
- a cost-effective improvement of the device can be achieved, mechanical and thermal loads being reduced by designing the machine components in a manner that is adapted to the load.
- cover elements are arranged within the secondary cooling and the strand support on the side surfaces of the casting strand cross section and / or at the corner regions.
- the soft reduction segment is formed with driver stands arranged at the beginning and end with driven driver rollers and that the soft reduction segment is formed from at least two roller stands with pairs of rollers without drives, the upper frame being hydraulic in each case can be adjusted to the subframe.
- the soft reduction in the soft reduction segment can be carried out by a multi-roller segment.
- a steady taper creates a continuous soft reduction process over a selectable length.
- the theoretical prediction of the bottom thickness over the last few meters in the final solidification area suggests an appropriate conicity setting and its length.
- Another arrangement is that an intensive cooling device for the top side of the strand and the underside of the strand of the casting strand cross section is arranged in front of a soft reduction segment.
- a further embodiment is given in that the soft reduction segment forms a unit which can be displaced in the strand movement direction or counter to the strand movement direction and is arranged in front of one or more driver stands.
- the soft reduction segments are arranged as directional and soft reduction segments between the driver frames. This provides a combination of mechanical and thermal soft reduction.
- the soft reduction segments can be arranged in the strand movement direction after the straightening and discharging machine (the driver stands).
- FIG. 1 is a side view of a continuous sheet caster for a block format with soft reduction as a first alternative
- 2A the casting strand cross section in the secondary cooling with a still large sump width and thin strand shell
- FIG. 2B the same casting strand cross section with reduced spray jet width and reduced sump width
- FIG. 2C the same casting strand cross section with a further reduced spray jet width on the top side of the strand and the bottom underside
- FIG. 3A shows the casting strand cross section corresponding to FIG. 2A
- FIG. 3B the casting strand cross section with the strand shell thickness corresponding to FIG. 2B and reduced strand support
- FIG. 4A the casting strand cross-section with complete solidification without the invention and without covering of the side surfaces
- FIG. 4B the casting strand cross-section with without the Invention of the present
- FIG. 5A the casting strand cross section with cover for a temperature distribution
- FIG. 5B the casting strand cross section with temperature distribution according to FIG
- FIG. 6 is a side view of a continuous sheet caster for a block format with soft reduction as a second alternative.
- the process for the continuous casting of steel in rectangular or block formats according to FIG. 1 is characterized by cooling, supporting and shaping.
- the casting strand 1 with a casting strand cross section 1 a has block format 2 in the exemplary embodiment and emerges from a continuous casting mold 3 and is cooled directly in a secondary cooling 4. This arises from arch section A.
- Arch sections B and C and D each have a solidification profile 5 (FIGS. 2A, 2B, 2C), which is represented by an already solid strand shell 5a with a strand shell thickness 5b growing from arch section to arch section.
- the method now works in such a way that the geometrical design of the secondary cooling 4 is adapted analogously to the solidification profile 5 of the casting strand 1 on the respective path length 6, which results from the arch section A to the arch section D, and wherein a strand support 11 is also dependent on the solidification profile 5 of the casting strand 1 is reduced analogously in each case on the following path length 6.
- the corner regions 1 b of the casting strand cross section 1 a are cooled less with increasing path length 6 than the central regions 1 c.
- This regulation takes place e.g. in that the spray jets 7 in the secondary cooling 4 are adapted with their spray angle 7a to the respective strand shell thickness 5b in such a way that a smaller spray angle 7a is assigned to a sump width 8 that becomes smaller.
- the distance 9 of the spray nozzles 10 generating the spray jets 7 from the strand surface 1 d is changed as a function of the solidification profile 5 which occurs, i.e. decreased (Fig. 2B).
- corner regions 1 b of the casting strand cross section 1 a are less supported with increasing path length 6 than the central region 1 c (FIGS. 3A, 3B, 3C).
- FIGS. 4A and 4B show solidified casting strands 1 with a largely uniform temperature distribution in outer areas, (FIG. 4B) even forming undesirable indentations 18.
- Cast strand cross section 1 a insulated against heat removal (Fig. 5A and 5B). There-by forming temperature limit areas 19, 20, 21. In the middle of the casting strand cross section 1a there is the temperature limit region 21 (FIG. 5B), in which deformation work can be carried out by pressing from top to bottom. In this middle range, the temperature is therefore even higher than at the very top or at the very bottom. In this way, segregations are easily distributed and porosities are eliminated.
- the top side 1f of the strand and the bottom side 1g of the strand are selectively cooled more intensively with coolant.
- the casting strand cross-section 1a is rolled from top to bottom in accordance with the so-called soft reduction process, with no otherwise usual crushing taking place.
- the device shown for continuous casting and subsequent deformation of a casting strand 1 made of steel, in particular a casting strand 1 with block format 2, the secondary cooling 4 and the strand support 11 being adapted to the cooling state of the casting strand cross section 1 a, is designed such that the secondary cooling 4 is dependent of the solidification profile 5 and the distance traveled 6 is carried out starting with essentially the full strand width 1 h and that the secondary cooling 4 and the strand support 11 are reduced depending on the solidification profile 5 of the casting strand 1 within the path length 6 such that the casting strand 1 before entering a soft reduction segment 12 is only supported on the underside of the strand 1 g of the strand width 1 h.
- the angle elements are arranged within the secondary cooling 4 and the strand support 11 on the side surfaces 1 e of the casting strand cross section 1 a and / or on the corner regions 1 b 13a can form.
- Driver stands 14 with driven driver rollers 14a are assigned to soft reduction segment 12 at the beginning 12a and at the end 12b.
- the soft reduction segment 12 itself consists of two or more roller stands 12c, the roller pairs of which are without a drive.
- An upper frame 12d can be adjusted hydraulically to a lower frame 12e.
- one or more driver stands 14 are furthermore arranged in front of and behind the soft reduction segment 12.
- an intensive cooling device 17 for the upper side 1f of the strand and the lower side 1g of the strand is arranged in front of a soft-reduction segment 12 on the casting strand cross section 1a. This increases strength and forms a soft reduction preparation.
- the intensive cooling on the top side 1f of the strand and the bottom side 1g of the strand can be used not only in front of the straightening driver 16, but also in front of the movable soft reduction segment 12 or after the straightening driver 16.
- the soft reduction segment 12 is designed as a unit 12f which can be displaced in the strand movement direction 15 or counter to the strand movement direction 15 and which is arranged in front of one or more driver stands 14 in the strand movement direction 15.
- the soft reduction segment 12 in the directional driver area is designed as a mandatory concept in conjunction with the conveying concept for blooming systems in general with two standard points.
- the casting strand 1 assumes a straight shape. Deviating from slab plants, in which the strand is led to a straight form via a curved path, a bending line is established in the straightening area in the straightening section, which, depending on the influencing factors of moment of inertia, temperature of the casting strand and temperature distribution within the Cast strand cross section 1a is different, which even partially z7.B.
- an allowable elongation E determined in practice can be predetermined.
- the elasto-plastic behavior generated by the bending process brings the casting strand 1 into a state (values of the theoretical yield point, the flow behavior and the like) which normally requires little effort to carry out additional soft reduction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10051959A DE10051959A1 (de) | 2000-10-20 | 2000-10-20 | Verfahren und Vorrichtung zum Stranggießen und anschließendem Verformen eines Gießstranges aus Stahl, insbesondere eines Gießstranges mit Blockformat oder Vorprofil-Format |
DE10051959 | 2000-10-20 | ||
PCT/EP2001/011222 WO2002034432A1 (de) | 2000-10-20 | 2001-09-28 | Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1330321A1 true EP1330321A1 (de) | 2003-07-30 |
EP1330321B1 EP1330321B1 (de) | 2004-07-14 |
Family
ID=7660401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01980448A Expired - Lifetime EP1330321B1 (de) | 2000-10-20 | 2001-09-28 | Verfahren und vorrichtung zum stranggiessen und anschliessendem verformen eines giessstranges aus stahl, insbesondere eines giessstranges mit blockformat oder vorprofil-format |
Country Status (11)
Country | Link |
---|---|
US (1) | US6892794B2 (de) |
EP (1) | EP1330321B1 (de) |
JP (1) | JP2004525767A (de) |
KR (1) | KR100817171B1 (de) |
CN (1) | CN1222382C (de) |
AT (1) | ATE270933T1 (de) |
AU (1) | AU2002212289A1 (de) |
DE (2) | DE10051959A1 (de) |
RU (1) | RU2271895C2 (de) |
UA (1) | UA75616C2 (de) |
WO (1) | WO2002034432A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1478479B1 (de) | 2002-02-22 | 2005-12-14 | SMS Demag Aktiengesellschaft | Verfahren zum stranggiessen und unmittelbaren verformen eines metall-, insbesondere eines giessstrangs aus stahlwerkstoffen |
DE102004057427A1 (de) * | 2004-11-27 | 2006-06-01 | Sms Demag Ag | Vorrichtung und Verfahren zum Stranggießen |
EP1897636B2 (de) * | 2006-09-04 | 2014-09-10 | Concast Ag | Stranggiessanlage sowie ein Verfahren zum Stranggiessen |
CN101970151A (zh) * | 2008-01-14 | 2011-02-09 | Sms康卡斯特股份公司 | 尤其用于长形钢制品的连铸设备以及连铸方法 |
DE102008004915A1 (de) * | 2008-01-18 | 2009-07-23 | Sms Demag Ag | Treibrichtsystem für Stranggießanlagen |
DE102010022003B4 (de) | 2009-06-19 | 2022-12-29 | Sms Group Gmbh | Vertikal-Stranggießanlage |
DE102010007659B4 (de) | 2010-01-12 | 2019-05-09 | Sms Group Gmbh | Stranggießmaschine mit einem Kaltstrang |
IT1400003B1 (it) | 2010-05-18 | 2013-05-09 | Danieli Off Mecc | Dispositivo di colata continua e relativo procedimento |
CN102744383A (zh) * | 2012-07-30 | 2012-10-24 | 首钢总公司 | 一种含Nb亚包晶钢连铸坯、其制造方法及专用连铸机 |
DE102015223787A1 (de) * | 2015-10-09 | 2017-04-13 | Sms Group Gmbh | Verfahren und Vorrichtung zum Herstellen eines metallischen Bandes durch Endloswalzen |
AT518450B1 (de) * | 2016-03-17 | 2021-02-15 | Primetals Technologies Austria GmbH | Verfahren und Kühleinrichtung zum Kühlen eines metallischen Strangs |
DE102017213842A1 (de) * | 2017-08-08 | 2019-02-14 | Sms Group Gmbh | Verfahren und Anlage zum Stranggießen eines metallischen Produkts |
CN115415489B (zh) * | 2022-09-05 | 2024-02-13 | 东北大学 | 一种铝/铝合金薄板坯连铸装备及工艺 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH572370A5 (de) * | 1974-02-28 | 1976-02-13 | Concast Ag | |
JPS58148059A (ja) * | 1982-02-27 | 1983-09-03 | Nippon Kokan Kk <Nkk> | 連続鋳造における鋳片の温度制御法および装置 |
JPH0741386B2 (ja) * | 1989-08-31 | 1995-05-10 | 新日本製鐵株式会社 | 連続鋳造方法およびスプレー幅切り装置 |
JP2528341Y2 (ja) * | 1991-08-07 | 1997-03-12 | 住友重機械工業株式会社 | 連続鋳造設備におけるビ−ムブランクと矩形鋳片兼用ロ−ラエプロン |
US6102101A (en) * | 1995-10-18 | 2000-08-15 | Sumitomo Metal Industries, Ltd. | Continuous casting method and apparatus thereof |
-
2000
- 2000-10-20 DE DE10051959A patent/DE10051959A1/de not_active Withdrawn
-
2001
- 2001-09-28 CN CNB018176860A patent/CN1222382C/zh not_active Expired - Fee Related
- 2001-09-28 UA UA2003054487A patent/UA75616C2/uk unknown
- 2001-09-28 AU AU2002212289A patent/AU2002212289A1/en not_active Abandoned
- 2001-09-28 US US10/399,743 patent/US6892794B2/en not_active Expired - Fee Related
- 2001-09-28 DE DE50102870T patent/DE50102870D1/de not_active Expired - Lifetime
- 2001-09-28 JP JP2002537467A patent/JP2004525767A/ja not_active Withdrawn
- 2001-09-28 AT AT01980448T patent/ATE270933T1/de active
- 2001-09-28 WO PCT/EP2001/011222 patent/WO2002034432A1/de active IP Right Grant
- 2001-09-28 KR KR1020037004264A patent/KR100817171B1/ko not_active IP Right Cessation
- 2001-09-28 EP EP01980448A patent/EP1330321B1/de not_active Expired - Lifetime
- 2001-09-28 RU RU2003114736/02A patent/RU2271895C2/ru not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0234432A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE270933T1 (de) | 2004-07-15 |
KR100817171B1 (ko) | 2008-03-27 |
JP2004525767A (ja) | 2004-08-26 |
AU2002212289A1 (en) | 2002-05-06 |
CN1222382C (zh) | 2005-10-12 |
WO2002034432A1 (de) | 2002-05-02 |
EP1330321B1 (de) | 2004-07-14 |
DE50102870D1 (de) | 2004-08-19 |
DE10051959A1 (de) | 2002-05-02 |
KR20030064758A (ko) | 2003-08-02 |
US20040020633A1 (en) | 2004-02-05 |
CN1469789A (zh) | 2004-01-21 |
UA75616C2 (en) | 2006-05-15 |
RU2271895C2 (ru) | 2006-03-20 |
US6892794B2 (en) | 2005-05-17 |
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