EP3600721A1 - Installation et procédé de coulée semi-continue de barres de bloom - Google Patents
Installation et procédé de coulée semi-continue de barres de bloomInfo
- Publication number
- EP3600721A1 EP3600721A1 EP18720106.6A EP18720106A EP3600721A1 EP 3600721 A1 EP3600721 A1 EP 3600721A1 EP 18720106 A EP18720106 A EP 18720106A EP 3600721 A1 EP3600721 A1 EP 3600721A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- block
- casting
- mold
- plant
- 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 abstract description 27
- 238000009749 continuous casting Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 title claims abstract description 19
- 238000007711 solidification Methods 0.000 claims abstract description 12
- 230000008023 solidification Effects 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 119
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000000641 cold extrusion Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000005303 weighing 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
- B22D11/14—Plants for continuous casting
- B22D11/141—Plants for continuous casting for vertical 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- 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
- B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
-
- 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
-
- 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
- B22D11/1281—Vertical removing
-
- 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
- B22D11/147—Multi-strand plants
Definitions
- the present invention relates on the one hand to a plant for semi-continuous continuous casting of block strands with a single or multi-strand first casting plant for
- the invention relates to a method for semi-continuous continuous casting of block strands in a plant, comprising a single- or multi-stranded first
- Block beach end very carefully and carefully carried out and the tertiary cooling zone for final solidification movable must be trained. To ensure the safety of the operating team, therefore, the system must be relatively complex.
- the object of the present invention is to increase the safety of plants for semi-continuous continuous casting of block strands and in particular the
- Casting comprises the following modules:
- Strand management framework and at least one
- Strand guide section wherein the strand guiding section has at least one strand guiding device, preferably three strand guiding rollers, for supporting and guiding the block strand, and the pivotable strand guide for conveying the block strand is pivotable about an axis of rotation;
- Insulating flaps for adjustable heat insulation of the block strand, wherein the insulating flaps either on the swivel strand guide or a stationary
- Plant dredger are arranged; and - A cold draw system for extracting a
- the inventive system comprises at least one single- or multi-strand casting plant to the first semi-continuous continuous casting of at least one first block and a single-strand or multi-strand casting plant to the second semi ⁇ continuous continuous casting of at least one second
- the first casting plant is an n-stranded plant and the second casting plant is a m-length plant, with n £ 1,2,3 ... and m E 1,2,3 ....
- the first casting plant may be a two-strand plant and the second casting plant a single-strand plant.
- first and second casting plants are single-stranded plants, then the molds of these are
- Casting plants supplied with a molten ladle or a movable tundish with molten steel are supplied with molten steel by a movable distributor trough. In this case, the
- Casting speed of each casting plant separately, e.g. be controlled by a slide closure or plug. Accordingly, it is possible that on the first strand of the first casting a round block strand with a first diameter, on the second strand of the first
- Each strand of the two casting plants has at least one mold with an oscillator, a first segment, a pivotable strand guide, insulating flaps and a
- Block strand out.
- the adhesion of the strand shell of the Block strand to the mold is prevented by an oscillator.
- the mold follows in the casting direction a first segment for supporting and guiding the partially solidified
- the block strand having a thin strand shell is supported and guided by strand guiding means (e.g., strand guiding rolls) and further cooled, preferably by secondary cooling spray nozzles.
- strand guiding means e.g., strand guiding rolls
- secondary cooling spray nozzles e.g., a free area between the first segment and the pivotable strand guide may be provided, so that the
- Block strand further cooled by radiation or convection. Due to the swiveling strand guide, the block strand can be supported and guided and discharged from the casting plant.
- the pivotable strand guide a strand guide frame and one or more preferably
- Strand guiding sections wherein a strand guiding section has at least one strand guiding device for supporting and guiding the partially solidified or solidified block strand and the pivotable strand guide for discharging the
- Block strand from the casting plant is pivotable about an axis of rotation. Especially with round or polygonal strands with rounded edges, it is possible to pivot
- the block strand is supported on the cold strand or on the cold strand extraction system.
- insulating flaps mounted either on the hinged strand guide, e.g. the strand guide frame, or the stationary plant equipment (usually technological
- the cooling of the block strand can be controlled or regulated.
- the cold draw pulley system serves to pull the cold strand and the subsequent hot strand from the mold and to support the block strand.
- the strand is supported until the complete solidification through the cold strand or the cold strangaus zugsystem and only then discharged.
- the system can be operated much safer. Due to the flexible configuration of the n-strand first casting plant and the m-stranded second casting plant, the production output can be easily increased if necessary, for example by increasing the strand number in the first or second casting plant.
- the pivotable strand guide has a horizontal axis of rotation for tilting and discharging the block strand substantially transverse to
- the block strand can be conveyed, for example, by 90 ° through frontal or lateral tilting of the strand guide.
- the pivotable strand guide can have a vertical axis of rotation for swiveling out and discharging the block strand in the casting direction.
- the pivotable strand guide only has loose sides, so that the center of the block strand remains constant during a format change. This has u.a. the advantage that different sized block strands are always centered on the cold strand.
- Highly variable block strands can be kept particularly safe, if a strand guide roller by linear process and two other strand guide rollers through
- Pivoting of two guide levers on the block strand are adjustable.
- Insulating flaps can pivot about a vertical axis of rotation and the insulating flaps in the closed position, the block strand, preferably completely or substantially completely, enclose. Furthermore, it is advantageous if the movement of two radially opposite insulating flaps by a
- Synchronization means e.g. a gear, is synchronized.
- the object of the invention is also by a
- Block strands in a plant comprising a single- or multi-strand first casting plant for continuously casting at least one first block strand and a single- or multi-strand second casting plant for continuously casting at least one second block strand according to claim 9, comprising the steps:
- Block strand is supported and guided at least in a first segment of the first casting plant
- Casting plant which forms a partially solidified second block strand in the mold; - Extracting the second block strand from the mold of the second casting by means of a cold strand extraction system, wherein the second block strand at least in a first
- Strand management of the second casting plant has reached, wherein at least one step, preferably two or more than two steps, particularly preferably all steps, from the group
- a second feature is also particularly important, namely that at least one step, preferably two or more than two steps, particularly preferably all steps, from the group - method of distribution trough or ladle,
- Block strands production performance are kept high.
- the discharge is carried out by tilting the pivotable strand guide about a horizontal axis of rotation and then the block strand is substantially conveyed transversely to the casting direction, or if the Aus detailn carried out by pivoting the pivotable strand guide about a vertical axis of rotation and then the block strand in Casting is carried out.
- a block strand in the mold and / or during the thermal insulation of the block strand is electromagnetically stirred. In order to keep the distance between the strand agitator and the block strand low, it is favorable when the insulating flaps are opened, a strand agitator in the region of
- retracted insulating flaps is retracted and then the strand agitator stirs the block strand electromagnetically.
- the strand agitator is extended out of the region of the opened insulating flaps and subsequently the insulating flaps closed again or at least
- Block strand is heated by a so-called "hot topping" treatment whereby a powder (eg an exothermic powder) is applied to the block strand end and has the effect that inclusions and impurities accumulate at the block strand end and the remainder of the block strand has a higher purity.
- a powder eg an exothermic powder
- the block strand end is thermally insulated by the powder and optionally by a cap enclosing the strand head After the block strand has solidified, the cap can be removed again and reused if necessary The block strand end can also be removed, if necessary, eg outside the plant.
- Figure 1 is an elevation and a side elevation of a plant for semi-continuous continuous casting of block strands with a single-strand first casting plant for continuously casting at least a first block strand and a single-stranded second casting plant for continuously casting at least one second block strand
- Figure 2 shows the section AA of Figure 1 with a strand guide and Isolierklappen for frontal removal by tilting 3 shows a plan view of a strand guide for two
- FIG. 5 shows an elevation and a side elevation of a single-stranded system for the removal by pivoting the strand guide and two sectional views of the strand guide
- FIG. 6 shows a plan view of a strand guide for a
- FIG. 9 shows a side view of a system according to the invention with a laterally tiltable strand guide
- Casting plant GAl for continuously casting at least one first block strand Bl and a single-stranded second casting plant GA2 for continuously casting at least one second block strand B2.
- the molds 3 of both casting plants are about a ladle 1 and a movable distributor trough 2 with
- the strands of both casting plants GA1, GA2 are constructed essentially identical.
- a partially solidified block strand Bl, B2 forms with a thin strand shell.
- the adhesion of the strand shell of the respective block strand Bl, B2 to the copper plates of the mold 3 is prevented by an oscillator 4.
- B2 is pulled through the cold strangaus zugsystem with the cold strand traverse 20, the drive 21 and the sprocket 22.
- the block strand could also be pulled out by a hydraulic cylinder carrying the cold strand 19.
- a first segment 5 with
- Strand guide rollers 9 (see Figure 2) for supporting and guiding the respective block strand Bl, B2 arranged. 2 shows the section A-A of the frontally tiltable strand guide 6 (the tilting direction is shown by an arrow).
- the block strand B2 is in a
- the middle strand guide roller 9 is made by a hydraulic cylinder 13; the two outer ones
- Strand guide rollers 9 are each from a
- Hydraulic cylinder 13 employed via guide lever 12.
- Strand guiding section 8 is effected by two insulating flaps 11, which can be opened and closed by a drive.
- the insulating flaps 11 are not swiveled during the discharge of the block strand B2 and remain on
- FIG. 1 also shows the pivotable strand guide 6 with the strand guiding frame 7 and several strand guiding sections 8.
- the pivotable strand guide 6 has a horizontal axis of rotation DA and can through the
- Hydraulic cylinder 13 can be tilted by 90 °.
- the conveying out of the block strand then takes place transversely to the casting direction (see FIG. 1, side elevation).
- the process sequence according to the invention is illustrated in FIGS. 7 and 8 on the basis of a single-strand first casting installation GA1 and a single-stranded second casting installation GA2.
- the molds 3 of the two were Casting plants GAl, GA2 already sealed by a cold strand 19, eg in the casting direction by "top feeding” or counter to the casting by "bottom feeding”, and the tundish 2 and the ladle 1 is located above the first casting plant GAl.
- step c Spray nozzles 24 further cooled (step c).
- step d the block strand Bl has reached its target length and target weight, and the pouring of molten steel has been stopped.
- the block strand Bl is still pulled out of the mold 3, at least until the upper end of the
- Block strand Bl (also called block strand end) has reached an upper end of the pivotable strand guide 6 (step e).
- the partially solidified block strand Bl is subsequently controlled or cooled in a controlled manner until completely solidified by insulating flaps 11 and then discharged by means of the pivotable strand guide 6.
- the block strand Bl is supported on the cold strand 19.
- the discharge of the solidified first block strand Bl from the first casting installation GA1 - step f - is not explicitly shown in FIGS. 7 and 8; to the position shown in phantom with the pivotable
- Casting GAl is discharged before the casting operation of the second casting plant GA2 is started.
- the second casting plant GA2 is started.
- Caster GA2 is found in Fig 7 still no casting operation.
- the ladle 1 or the distributor trough 2 has been moved to the second casting installation GA2 in the direction of the arrow and is located above the mold 3 of the second casting installation GA2 (step g)
- step h analogously to step b, molten steel is poured into the mold 3 of the second casting plant, and the second one is connected
- the conveying out of the second block strand is again effected by means of the pivotable strand guide 6.
- the first casting machine GA1 is single-stranded or, for example, as shown in FIGS. is two-stranded.
- a two-strand first casting plant GAl would two molds by a longer
- Distributor trough 2 supplied with melt, so that e.g.
- FIG. 3 shows the pivotable strand guide 6 of a two-strand caster with insulating flaps 11.
- the first and the second block strand Bl, B2 can each be swung laterally, the arrows indicate the Ausschwenkraum. Due to the specified arrangement of the strand guides 6 for the two block strands Bl and B2, the system can be built very compact and in particular a short
- FIG. 4 shows an alternative to Figure 3 arrangement of the strand guides 6, wherein the strand spacing 14 between the first and second block strand Bl, B2 is substantially larger than in FIG. 3.
- the cold strand spars 20 of the first and second casting plants GA1, GA2 are arranged collinear, so that I give a greater strand spacing 14.
- the block strands Bl, B2 are each forward
- the insulating flaps 11 are each connected to the pivotable strand guide 6 of the first and the second caster GAl, GA2.
- Block strand Bl is supported on the circumference by three strand guide rollers 9, wherein a strand guide rollers 9 of a linearly movable hydraulic cylinder 13 and two further strand guide rollers 9 each of a pivotable
- FIG 5 shows the discharge of a block strand Bl from the first casting plant GAl by means of a pivotable
- the strand guide frame 7 of the pivotable strand guide 6 has a vertical axis of rotation DA, so that the block strand Bl with him holding
- Strand guide rollers 9 can be swung out. After swinging the block strand Bl can be taken either directly from a crane from the pivoting strand guide 6, the strand guide rollers 9 solved and the block strand Bl
- FIG. 9 shows a side elevation of a system according to the invention.
- the drive of the cold strand 19 and the cold strand traverse 20 takes place via two
- the distributor trough 2 with two plugs can supply a double-stranded first casting installation GA1 and a single-stranded second casting installation GA2.
- the pivotable strand guide 6 with the strand guide frame 7 is pivoted via a hydraulic cylinder 13 (see arrow for the pivoting direction); In addition, the strand guide frame 7 can be moved linearly in the swung-out state, so that the block strand Bl can be easily removed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017002723 | 2017-03-21 | ||
DE102017004512 | 2017-05-11 | ||
PCT/EP2018/057023 WO2018172358A1 (fr) | 2017-03-21 | 2018-03-20 | Installation et procédé de coulée semi-continue de barres de bloom |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3600721A1 true EP3600721A1 (fr) | 2020-02-05 |
EP3600721B1 EP3600721B1 (fr) | 2021-05-05 |
Family
ID=63585907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18720106.6A Active EP3600721B1 (fr) | 2017-03-21 | 2018-03-20 | Installation et procédé de coulée semi-continue de barres de bloom |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3600721B1 (fr) |
KR (1) | KR20190126333A (fr) |
WO (1) | WO2018172358A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT522265B1 (de) * | 2019-03-06 | 2021-12-15 | Primetals Technologies Austria GmbH | Umbau einer stranggiessanlage für knüppel- oder vorblockstränge |
CN115194111B (zh) * | 2022-07-21 | 2024-04-30 | 武汉大西洋连铸设备工程有限责任公司 | 一种大圆坯至特大圆坯半连铸垂直浇铸工艺与设备 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2042546A1 (en) * | 1970-08-27 | 1972-03-02 | Zentralnyj nautschno lssledowatelskij Institut tschernoj metallurgn lmenti I P Bardina, Moskau | Reduction of cooling of continuous castings - in secondary cooling zo |
DE3027789A1 (de) | 1980-07-23 | 1982-02-18 | Schloemann-Siemag AG, 4000 Düsseldorf | Vertikalstranggiessanlage |
DE3542518A1 (de) * | 1985-12-02 | 1987-06-04 | Mannesmann Ag | Einrichtung zum senkrechten, diskontinuierlichen stranggiessen von metallen, insbesondere von stahl |
DE3621234A1 (de) * | 1986-06-25 | 1988-01-21 | Thyssen Edelstahlwerke Ag | Senkrecht-giessanlage fuer strang-teillaengen |
KR101149373B1 (ko) | 2009-12-24 | 2012-05-30 | 주식회사 포스코 | 수직형 주조 장치 및 이를 이용한 주조 방법 |
RU2675880C2 (ru) | 2014-03-27 | 2018-12-25 | Прайметалз Текнолоджиз Аустриа ГмбХ | Полунепрерывное литье стальной заготовки |
DE112016000811A5 (de) * | 2015-02-19 | 2017-11-02 | Michael Merz | Verfahren und Anlage zum Erzeugen von Stahlsträngen |
-
2018
- 2018-03-20 KR KR1020197027194A patent/KR20190126333A/ko not_active Application Discontinuation
- 2018-03-20 EP EP18720106.6A patent/EP3600721B1/fr active Active
- 2018-03-20 WO PCT/EP2018/057023 patent/WO2018172358A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2018172358A1 (fr) | 2018-09-27 |
EP3600721B1 (fr) | 2021-05-05 |
KR20190126333A (ko) | 2019-11-11 |
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