EP1521649A1 - Continuous casting plant with a deflecting device for metallic strips and deflecting method - Google Patents
Continuous casting plant with a deflecting device for metallic strips and deflecting methodInfo
- Publication number
- EP1521649A1 EP1521649A1 EP03735699A EP03735699A EP1521649A1 EP 1521649 A1 EP1521649 A1 EP 1521649A1 EP 03735699 A EP03735699 A EP 03735699A EP 03735699 A EP03735699 A EP 03735699A EP 1521649 A1 EP1521649 A1 EP 1521649A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- casting
- metallic strip
- deflecting device
- metallic
- 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
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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
-
- 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
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- 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
- B22D11/0637—Accessories therefor
- B22D11/0694—Accessories therefor for peeling-off or removing the cast product
Definitions
- the present invention refers to a continuous casting plant with a deflecting device for deflecting a metallic strip produced by continuous casting originating from the ingot mould of the plant.
- the device is placed at the entrance of continuous transporters to send the strand to various stations including the casting line downstream of the ingot mould.
- a method for deflecting the strip is also described.
- One of the technologies for the production of metallic strips consists in producing them starting from continuously cast ingots or slabs, which are successively reduced in thickness by a series of operations comprising breakdown, hot and cold rolling, together with further processing, for example thermal treatment.
- the cast strip initially follows, a vertical stretch;
- the rolling transporters downstream of the ingot mould generally follow trajectories which continue horizontally or along inclined planes.
- a problem which emerges with this type of plant, for example at the start or after breakdowns in casting, is the necessity to deviate and position an interrupted flap, or the cast head, of the metallic strip, when it descends vertically from the ingot mould, and deviate it towards the first transportation means - by means of rolls or of a similar type - immediately below the ingot mould with a horizontal direction of advancement, so as it can be seized and loaded by the transporter and sent to the successive working or manipulation stations.
- a solution for deviating the casting head from its vertical trajectory is that described for example in the patent WO 0061320: whereby an accurately shaped plate, hinged at one of its ends, turning around an axis parallel to the plane formed by the strip and transversally to the direction of advancement of the strip, raises and brings the free flap of cast strip to the entry of the rolling plane downstream of the ingot mould. After a sufficiently long stretch the strip is deposited onto the rolling plane, it is gripped by holding rolls and can move towards the downstream stations.
- a problem at the heart of the present invention is to supply a continuous casting plant fitted with a device for the deflection of the metallic strips produced by continuous casting, which is reliable and adapts to the various types of continuous casting machines existing for the production of metallic strips, and which causes minimum hindrance in the area underneath the casting rolls.
- the invention relates to a method for continuous casting of a metallic strip by means of a plant with the features above, comprising the following operations:
- Figure 1 shows schematically an example of a preferred embodiment of a device according to the present invention, in a first standby position of the operating sequence
- Figure 2 shows schematically the device of Figure 1 in a second position of the operating sequence
- Figure 3 shows schematically the device of Figure 1 in a third position of the operating sequence
- Figure 4 shows schematically the device of Figure 2 in a fourth position of the operating sequence.
- Detailed description of a preferred embodiment Figures 1-4 show schematically four successive stages in the operating sequence of a plant according to a preferred aspect of the invention.
- the continuous metallic strip casting plant of Figure 1 comprises an ingot mould 1 which comprises in turn a pair of rolls 2, 2', named also "counter rotating rolls” in the following description.
- the rolls 2, 2' rotate around two axes parallel to each other in opposite rotating directions, the left roll in a clockwise direction and that on the right in anticlockwise direction with reference to the orientation in the figures.
- the rolls 2, 2' are distanced apart so as to be separated at their point of minimal distance, by a slot through which the molten metal bath B exits downwards, cooling it and forming with a continuous casting operation the metallic strip N.
- Reference 6- indicates a chamber filled preferably with inert gasses, to create -a- controlled atmosphere which avoids oxidation of the metal.
- the metallic strip N is immersed In this chamber from its formation, on exit from the ingot mould. Underneath the inert chamber 3 there is placed a chest 4 for wastes inside which crop ends of the strip N are let fall when they are cut immediately -or almost immediately- downstream of the ingot mould 1 , as can be seen in more detail in the following.
- the wastes chest 4 receives also the melt still remaining in the ingot mould when the casting operation, for any reason, must be suspended or interrupted, by reciprocal distancing of the counter rotating rolls 2, 2'.
- the inert chamber 3 has a side 7 from which the strip N emerges, continuously cast by the plant.
- various strip processing devices which comprise guide rolls, schematically represented by a single cylinder 6, onto which the strip rests drawn by appropriate devices.
- Figure 2 is a stage of the cast operation in the plant of Figure 1 , in which a crop end 10 of metallic strip N has been sliced - or however detached by an appropriate device - from the remainder of the strand N.
- Means for drawing the strip consists in varying shortly the speed of rotation of the rolls 2 in such a way to produce a thinning of the strip N immediately upon exit from the pair of rolls 2, so that the latter tears under its own weight, or the strip can be sliced by other known mechanical devices or other casting procedures.
- This cutting operation is for example necessary upon starting the casting operation, or following an interruption of the casting operation for any reason, to eliminate the initial section of the new strand if this does not have the desired mechanical characteristics, as it often happens,.
- the torn crop end 10 can fall by gravity into the underlying wastes chest 3.
- the mobile plate 5 is equipped with motorised means, as for example a hydraulic cylinder, able to impart a translational movement in a substantially horizontal direction to the plate bringing it in interference with the strip N, and deviating the latter from its vertical trajectory under the ingot mould 1. It brings the foremost end E into a position where it can be laid onto conveying means schematically represented by the roll 6, which in practice could be realised by a roll conveyor.
- the conveying means 6 can also comprise means for drawing the strip N towards the other processing stations, for example the rolling, cooling, winding and cutting stations. Such means can be one or more pairs of drawing rolls.
- the mobile plate or flap 5 has preferably an appropriately arched shape so as to gradually deviate the strip N from an almost vertical direction to the substantially horizontal direction on the rolling pathway 6.
- the mobile flap 5 for most of its upper surface corresponds to the surface of a circular cylinder.
- the mobile flap 5 can be made to interfere with the cast strip N, to deflect it, with a purely translation movement.
- the translation movement occurs according to a substantially horizontal rectilinear trajectory.
- FIG. 3 shows the mobile flap 5 upon reaching the end position of its operational course: It is in a position such that the foremost area of the cast strip N has a curvature, obtained by a gradual displacement of the deflector.
- the strip N at this stage is deviated from the initial line of vertical movement, or from the axis of casting, in a progressive manner.
- the leading edge 9 of the flap is found at a height such that the strip N passes from the edge 9 to the roll conveyor 6 without violent or however dangerous curvatures.
- the mobile flap 5 can move from the standby end position to the operative end position by moying_along a route not necessarily rectilinear but alternatively curved, or along a rectilinear route not horizontally but inclined, where for example the position of the standby end position is located higher than the position than the operative end point, and the flap approaches the casting strip with a downward movement.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2002MI001509A ITMI20021509A1 (en) | 2002-07-10 | 2002-07-10 | CONTINUOUS CASTING METHOD AND METHOD WITH DEFLECTOR DEVICE FOR METAL TAPES |
ITMI20021509 | 2002-07-10 | ||
PCT/EP2003/007301 WO2004007112A1 (en) | 2002-07-10 | 2003-07-08 | Continuous casting plant with a deflecting device for metallic strips and deflecting method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1521649A1 true EP1521649A1 (en) | 2005-04-13 |
EP1521649B1 EP1521649B1 (en) | 2008-01-09 |
Family
ID=11450170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03735699A Expired - Lifetime EP1521649B1 (en) | 2002-07-10 | 2003-07-08 | Continuous casting plant with a deflecting device for metallic strips and deflecting method |
Country Status (8)
Country | Link |
---|---|
US (1) | US20050236134A1 (en) |
EP (1) | EP1521649B1 (en) |
CN (1) | CN1665619A (en) |
AT (1) | ATE383213T1 (en) |
AU (1) | AU2003238068A1 (en) |
DE (1) | DE60318577D1 (en) |
IT (1) | ITMI20021509A1 (en) |
WO (1) | WO2004007112A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT412539B (en) * | 2003-05-06 | 2005-04-25 | Voest Alpine Ind Anlagen | Two-roll casting |
US8826966B1 (en) * | 2009-12-21 | 2014-09-09 | Iowa State University Research Foundation, Inc. | Melt containment member |
CN102294450A (en) * | 2010-06-25 | 2011-12-28 | 宝山钢铁股份有限公司 | Method for keeping continuous casting after strip breakage of strip continuous casting |
CN112157232B (en) * | 2020-09-16 | 2021-10-19 | 东北大学 | Multi-radian guide plate |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB980420A (en) * | 1963-01-08 | 1965-01-13 | United Steel Companies Ltd | Continuous casting machines |
BE789204A (en) * | 1971-10-01 | 1973-03-22 | Uss Eng & Consult | METHOD AND APPARATUS FOR USING A RIGID PRIMER BAR IN A FIXED BENDING DEVICE |
JPS60221103A (en) * | 1984-04-17 | 1985-11-05 | Ishikawajima Harima Heavy Ind Co Ltd | Casting and rolling installation |
JP3016645B2 (en) * | 1991-11-27 | 2000-03-06 | 新日本製鐵株式会社 | Twin roll continuous casting equipment |
DE19637545B4 (en) * | 1996-09-14 | 2007-10-18 | Sms Demag Ag | Device for diverting a cast in a continuous casting thin slab strand from the vertical in a horizontal Ausförderrichtung |
AT406026B (en) * | 1998-03-25 | 2000-01-25 | Voest Alpine Ind Anlagen | CONTINUOUS CASTING MACHINE FOR CONTINUOUSLY CASTING A THIN STRAP AND METHOD THEREFOR |
AUPP964499A0 (en) * | 1999-04-08 | 1999-04-29 | Bhp Steel (Jla) Pty Limited | Casting strip |
-
2002
- 2002-07-10 IT IT2002MI001509A patent/ITMI20021509A1/en unknown
-
2003
- 2003-07-08 DE DE60318577T patent/DE60318577D1/en not_active Expired - Lifetime
- 2003-07-08 CN CN03816054.4A patent/CN1665619A/en active Pending
- 2003-07-08 AU AU2003238068A patent/AU2003238068A1/en not_active Abandoned
- 2003-07-08 WO PCT/EP2003/007301 patent/WO2004007112A1/en active IP Right Grant
- 2003-07-08 US US10/520,765 patent/US20050236134A1/en not_active Abandoned
- 2003-07-08 EP EP03735699A patent/EP1521649B1/en not_active Expired - Lifetime
- 2003-07-08 AT AT03735699T patent/ATE383213T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004007112A1 * |
Also Published As
Publication number | Publication date |
---|---|
ITMI20021509A1 (en) | 2004-01-12 |
ITMI20021509A0 (en) | 2002-07-10 |
AU2003238068A1 (en) | 2004-02-02 |
DE60318577D1 (en) | 2008-02-21 |
EP1521649B1 (en) | 2008-01-09 |
WO2004007112A1 (en) | 2004-01-22 |
ATE383213T1 (en) | 2008-01-15 |
US20050236134A1 (en) | 2005-10-27 |
CN1665619A (en) | 2005-09-07 |
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