EP2176016A1 - Verfahren und vorrichtung zur vergleichmässigung des wärmeübergangs eines gussprodukts während seiner erstarrung auf dem metalltransportband einer horizontalen bandgiessanlage - Google Patents
Verfahren und vorrichtung zur vergleichmässigung des wärmeübergangs eines gussprodukts während seiner erstarrung auf dem metalltransportband einer horizontalen bandgiessanlageInfo
- Publication number
- EP2176016A1 EP2176016A1 EP08785302A EP08785302A EP2176016A1 EP 2176016 A1 EP2176016 A1 EP 2176016A1 EP 08785302 A EP08785302 A EP 08785302A EP 08785302 A EP08785302 A EP 08785302A EP 2176016 A1 EP2176016 A1 EP 2176016A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor belt
- strip
- cast product
- metal conveyor
- metal
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 89
- 238000005266 casting Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007711 solidification Methods 0.000 title claims abstract description 9
- 230000008023 solidification Effects 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 230000000694 effects Effects 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 239000012080 ambient air Substances 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 abstract 1
- 238000009499 grossing Methods 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000007078 Treibs oxidation reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
-
- 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
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- 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
- B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening 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
-
- 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
- B22D11/143—Plants for continuous casting for horizontal casting
Definitions
- the invention relates to a method and a device for close-to-near-casting of rectangular metal strands and subsequent further processing into metal strips by the DSC process (direct strip casting) in a horizontal strip casting plant, wherein the molten metal by means of a melt delivery system on at Bottom cooled horizontal metal conveyor belt is cast and solidifies the liquid cast product on this metal conveyor belt during its transport to the pre-band, which is then conveyed to the driver after leaving the metal conveyor belt - mechanically clamped for example by smoothing / driving rollers.
- the structure with smoothing / driving rollers is not absolutely necessary, the structure can also be realized without these roles.
- the top of the belt is cooled only by convection with the ambient atmosphere and by heat radiation, while its bottom in direct contact with a cooled Metal conveyor belt is stationary, the band already deformed during solidification and then first up and then down.
- the lowermost material layer of the band contracts most strongly due to very large temperature gradients.
- the entire band curves upwards in the middle, with very high stresses being introduced in the upper layer. Since these stresses are greater than the flow stress, they degrade in the further course of solidification by elongation (flow), whereby an opposite curvature of the Band center down gives. As a result, the lower layer remains initially elongated, the upper one shortened.
- the thermal expansion is also compensated for.
- the upper shortened and the lower elongated band areas now cause a backward curvature, whereby the band edges bulge upwards.
- the stresses occurring below or below the yield point so that no or a very small regression of the curvature
- the degree of freedom of this warping in the longitudinal direction due to the weight of the horizontally transported on the subsequent roller conveyor belt and / or by one or more following the metal conveyor belt following drive or smoothing rollers is limited to the first and then the entire band Clamp the belt mechanically and force it flow-downwards to the plane-parallel run.
- This restriction of the degree of freedom then leads to the fact that the stresses present in the band must be dissipated in non-clamped areas, which is why the band narrow sides first bulge up after leaving the metal conveyor belt.
- WO 2006/066552 A1 To counter this problem and to avoid the effect of the profiling of the pre-strip in the casting area and the threading in the To ensure downstream units is proposed in WO 2006/066552 A1, to arrange a guide element at the end of the primary cooling zone and before the start of the usual secondary cooling zone.
- the guide element consists of several above and below the pre-strip in top to top or mutually offset roles.
- the pre-strip is guided into a plane lying above the casting line in order to absorb the elongation of the underside of the pre-strip by the upward movement thereby carried out.
- a roller assembly in which the sub-band undulating passes through the set of rollers is possible, but has not been used.
- a disadvantage of the method known from WO 2006/066552 A1 is that a thorough influencing of the thermal processes on the metal conveyor belt is only incompletely possible due to the guide element following the metal conveyor belt.
- the stated object is procedurally achieved with the features of claim 1, characterized in that to avoid a possible up to the pouring of the casting rear buckling of the strip edges and to equalize the heat transfer to the cast product during its He-stiffening on the metal conveyor belt following steps are combined : Production of a maximum contact of the cast product on the metal conveyor belt, one of which is above the cast product in the area of the casting Cooled pressure device arranged from the top onto the cast product solidifying toward the pre-band, preferably on the band edges thereof, compensating the abruptly reduced cooling of the underside of the pre-band when leaving the metal conveyor belt, for this purpose in a defined area immediately behind the metal conveyor belt the underside of the Vorbandes and optionally simultaneously the top, optionally over the entire width, additionally cooled.
- the required pressure is applied by a pressure roller acting on the entire width of the cast product or by partial pressure rollers acting only on the strip edges.
- the pressure rollers are preferably driven separately and cooled inside.
- the required pressure can also be applied by a circumferential pressure belt resting on the entire width of the cast product, which likewise can be driven and cooled separately.
- FIG. 2a shows an enlarged partial section of FIG. 1 with open injection cooling
- FIG. 2b shows an enlarged partial section of FIG. 1 with circulating cooling belts
- FIG. 3a is a plan view of a partial detail of FIG. 1 according to the prior art
- FIG. 4a is a plan view of Fig. 3 with a pressure roller
- FIG. 5 shows the plan view of FIG. 3 with partial pressure rollers
- Fig. 6 is a plan view of Fig. 3 with a printing tape.
- FIG. 1 shows a side view of a strip caster 1 according to the DSC method with its essential components.
- this plant consists of the actual casting machine 2 with the ladle 2 ', a distributor channel 3, a melt delivery system 3' and a circulating metal conveyor belt 7.
- the from the ladle 2 'through the distributor channel 3 downflowing molten metal is applied by the melt delivery system 3 'in a certain thickness on the cooled metal conveyor belt 7 as a cast product 4.
- the length of the metal conveyor belt 7 is designed so that the residence time of the cast product 4 on the metal conveyor belt 7 is sufficient for its extensive solidification to the pre-strip 5.
- the metal conveyor belt 7, which has, for example, only a thickness of about 1 mm, is driven and guided by two deflection rollers 8, 9 and, for example, a tensioning roller 10.
- a follower dam block chain 15 is arranged on each side of the metal conveyor belt 7.
- On the metal conveyor belt 7 close for transport and for safe management of fully solidified Vorbandes 5 smooth / drive rollers 14, which mechanically clamp the Vorband and promote to a driver 16, from where it is then fed to its further processing.
- a pressure roller 11 is arranged above the cast product 4 in the region of the deflection roller 8 located at the end of the metal conveyor belt 7.
- a maximum contact of at least the strip edges of the cast product 4 with the metal conveyor belt 7 can be forced by a correspondingly exerted pressure on the cast product 4.
- FIG. 2a an enlarged partial section of Fig. 1, in addition to the pressure roller 11, which acts from above with a certain pressure on the cast product 4, this in combination according to the invention carried out additional cooling the underside of the pre-strip 5 in the form of spray cooling 17 drawn. This cooling is adjusted so that it acts only in a defined area, which can extend over the entire width of the pre-strip 5 and in the illustrated embodiment, from the end of the metal conveyor belt 7 to the first of the lower smooth / drive rollers 14 enough.
- FIG. 2b An alternative cooling of the pre-strip 5 in the form of a closed cooling is shown in FIG. 2b.
- This cooling which also takes place only in a defined area immediately behind the deflection roller 8, is performed with a circulating cooling belt 19, 19 '. 2a, only the underside of the pre-strip 5 can be cooled by a cooling belt 19 arranged there and / or optionally also the upper side of the pre-belt by a further cooling belt 19 'arranged on the upper side of the pre-belt 5.
- the strip casting machine 1 of FIGS. 1 and 2 is shown in a perspective plan view in FIGS. 3 to 6.
- FIG. 3 a shows by way of example a part of the strip casting installation 1 from the distribution channel 3 / melt delivery system 3 'to the end of the metal transport strip 7 according to the prior art.
- the line “A” represents a cross section through the cast product 4 in the front half of the metal conveyor belt 7,
- the line “B” shows a cross section through the cast product 4 at the end of the metal conveyor belt 7 and
- the line "C” represents a cross section through the solidified Preband 5, which rests on a roller table T after leaving the metal conveyor belt 7.
- FIG. 3b the high arching of the band described in FIG. 3a is more clearly represented by the band cross sections resulting in the respective cross-sectional lines.
- the cross-sectional line "A” the cast product 4, which is not completely solidified, still rests on its underlay, the metal conveyor belt 7, due to its weight and its existing plastic properties with complete contact of the now no longer plastic cast product 4 detached from the metal conveyor belt 7, the cast product 4 now has a slightly curved cross-section.
- the cross-section line "C” the warping of the strip edges 6 has progressed further and the cross-section of the fully solidified pre-strip 5 resting on a roller conveyor 7 'extending the metal conveyor belt 7 has approximately the shape of a rain gutter.
- FIG. 4a shows the change in the warping of the band edges 6 which occurs as a result of the use of a pressure roller 11 arranged in the region of the cross-section line "B."
- the bulge region 18 of the band edges 6 only begins with a significantly reduced absolute value starting from the cross-section line "B".
- the pressure roller 11 thus also acts backwards with respect to the cross-section line "A” with an effect suppressing the bulging of the band edges 6.
- the further upward bending of the band edges 6 to the cross-sectional line "C" can indeed be achieved by the pressure roller 11 is not completely suppress, but is significantly lower than in Fig. 3a without pressure roller 11.
- partial pressure rollers 12 are used as a printing device as an alternative to the pressure roller 11 in the same area at the end of the metal conveyor belt, which act exclusively on the belt edges 6.
- the effect achieved by this measure is quite comparable to the mode of action of a pressure roller 11, as becomes clear from the indicated bulge area 18.
- a further alternative to the pressure rollers 11 or partial pressure rollers 12 is the use of a pressure belt 13, which acts according to the figure 6 on a larger area of the cast product 4 with pressure.
- the bulge area 18 resulting here is therefore somewhat smaller than in the previously described pressure rollers 11, 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007036969 | 2007-08-04 | ||
DE102007054554 | 2007-11-15 | ||
DE102007057278A DE102007057278A1 (de) | 2007-08-04 | 2007-11-28 | Verfahren und Vorrichtung zur Vergleichmäßigung des Wärmeübergangs eines Gussprodukts während seiner Erstattung auf dem Metalltransportband einer horizontalen Bandgießanlage |
PCT/EP2008/006362 WO2009018973A1 (de) | 2007-08-04 | 2008-08-01 | Verfahren und vorrichtung zur vergleichmässigung des wärmeübergangs eines gussprodukts während seiner erstarrung auf dem metalltransportband einer horizontalen bandgiessanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2176016A1 true EP2176016A1 (de) | 2010-04-21 |
EP2176016B1 EP2176016B1 (de) | 2017-05-10 |
Family
ID=40176023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08785302.4A Active EP2176016B1 (de) | 2007-08-04 | 2008-08-01 | Verfahren und vorrichtung zur vergleichmässigung des wärmeübergangs eines gussprodukts während seiner erstarrung auf dem metalltransportband einer horizontalen bandgiessanlage |
Country Status (8)
Country | Link |
---|---|
US (2) | US8272426B2 (de) |
EP (1) | EP2176016B1 (de) |
JP (1) | JP5289436B2 (de) |
KR (1) | KR101185393B1 (de) |
CN (1) | CN101772388B (de) |
CA (1) | CA2693895C (de) |
DE (1) | DE102007057278A1 (de) |
WO (1) | WO2009018973A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009030793A1 (de) | 2009-06-27 | 2010-12-30 | Sms Siemag Ag | Vorrichtung und Verfahren zum horizontalen Gießen eines Metallbandes |
DE102012013425A1 (de) * | 2012-07-03 | 2014-01-09 | Salzgitter Flachstahl Gmbh | Kontinuierlich arbeitende Bandgieß- und Walzanlage |
DE102013214940A1 (de) * | 2013-07-30 | 2015-02-05 | Sms Siemag Ag | Gießwalzanlage und Verfahren zum Herstellen von Brammen |
CN113104626B (zh) * | 2021-05-12 | 2021-12-17 | 株洲宜安新材料研发有限公司 | 一种用于非晶合金薄带材的收卷设备 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3163896A (en) * | 1961-06-23 | 1965-01-05 | Aluminium Lab Ltd | Coated belt and method of making same for continuous metal casting process |
JPS53144833A (en) * | 1977-05-24 | 1978-12-16 | Furukawa Electric Co Ltd | Continuous casting rolling method |
JPS6035218B2 (ja) * | 1978-04-21 | 1985-08-13 | 古河電気工業株式会社 | 連続鋳造法 |
US4506725A (en) * | 1982-11-05 | 1985-03-26 | Electric Power Research Institute | Method and apparatus for magnetically holding a cast metal ribbon against a belt |
DE3342941C1 (de) * | 1983-11-26 | 1984-12-06 | Fried. Krupp Gmbh, 4300 Essen | Pruefeinrichtung zur Feststellung von Beschaedigungen an den Giessbaendern einer Stranggiesskokille |
JPS60250857A (ja) * | 1984-05-28 | 1985-12-11 | Nippon Kokan Kk <Nkk> | 弱脱酸鋼の水平連続鋳造法 |
DE3423834A1 (de) * | 1984-06-28 | 1986-01-09 | Mannesmann AG, 4000 Düsseldorf | Verfahren und vorrichtung zum kontinuierlichen giessen von metallschmelze, insbesondere von stahlschmelze |
KR940008621B1 (ko) * | 1985-06-27 | 1994-09-24 | 가와사키세이데쓰 가부시키가이샤 | 엔드레스 스트립의 주조방법 및 그 장치 |
JPS63252604A (ja) * | 1987-04-08 | 1988-10-19 | Hitachi Ltd | 連鋳直結圧延方法及び装置 |
US5301741A (en) * | 1991-06-03 | 1994-04-12 | Olin Corporation | Casting of metal strip |
JPH05277668A (ja) * | 1992-03-27 | 1993-10-26 | Nippon Steel Corp | 単ベルト式連続鋳造装置 |
JPH067900A (ja) * | 1992-06-26 | 1994-01-18 | Nippon Steel Corp | スラブの連続鋳造機および連続鋳造方法 |
JPH06210410A (ja) * | 1993-01-11 | 1994-08-02 | Nippon Steel Corp | 単ベルト式連続鋳造装置 |
US5392843A (en) * | 1993-03-25 | 1995-02-28 | Dolan; James J. | Continuous silver float casting of steel sheet or plate |
JP3925789B2 (ja) * | 2002-05-17 | 2007-06-06 | Jfeスチール株式会社 | 高温鋼板の冷却方法、高温鋼板の冷却装置、及び鋼板の製造方法 |
DE102004062636B4 (de) | 2004-12-21 | 2007-05-24 | Salzgitter Flachstahl Gmbh | Einrichtung zum horizontalen Bandgießen von Stahl |
-
2007
- 2007-11-28 DE DE102007057278A patent/DE102007057278A1/de not_active Withdrawn
-
2008
- 2008-08-01 CN CN200880101875.3A patent/CN101772388B/zh not_active Expired - Fee Related
- 2008-08-01 CA CA2693895A patent/CA2693895C/en not_active Expired - Fee Related
- 2008-08-01 KR KR1020097027343A patent/KR101185393B1/ko active IP Right Grant
- 2008-08-01 WO PCT/EP2008/006362 patent/WO2009018973A1/de active Application Filing
- 2008-08-01 EP EP08785302.4A patent/EP2176016B1/de active Active
- 2008-08-01 US US12/452,953 patent/US8272426B2/en active Active
- 2008-08-01 JP JP2010516431A patent/JP5289436B2/ja not_active Expired - Fee Related
-
2011
- 2011-05-04 US US13/100,375 patent/US8261812B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009018973A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102007057278A1 (de) | 2009-02-05 |
US20100132911A1 (en) | 2010-06-03 |
CA2693895C (en) | 2011-10-11 |
CN101772388A (zh) | 2010-07-07 |
CA2693895A1 (en) | 2009-02-12 |
US8272426B2 (en) | 2012-09-25 |
CN101772388B (zh) | 2015-04-29 |
KR20100017953A (ko) | 2010-02-16 |
WO2009018973A1 (de) | 2009-02-12 |
US8261812B2 (en) | 2012-09-11 |
US20110253339A1 (en) | 2011-10-20 |
JP5289436B2 (ja) | 2013-09-11 |
EP2176016B1 (de) | 2017-05-10 |
KR101185393B1 (ko) | 2012-09-25 |
JP2010533590A (ja) | 2010-10-28 |
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