EP3575015A1 - Dispositif oscillant pour un moule d'une ligne de coulée continue - Google Patents

Dispositif oscillant pour un moule d'une ligne de coulée continue Download PDF

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Publication number
EP3575015A1
EP3575015A1 EP19175638.6A EP19175638A EP3575015A1 EP 3575015 A1 EP3575015 A1 EP 3575015A1 EP 19175638 A EP19175638 A EP 19175638A EP 3575015 A1 EP3575015 A1 EP 3575015A1
Authority
EP
European Patent Office
Prior art keywords
oscillating
frame
oscillating device
translating
translation
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
Application number
EP19175638.6A
Other languages
German (de)
English (en)
Other versions
EP3575015B1 (fr
Inventor
Natale Bonometti
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.)
Sama Impianti Srl
Original Assignee
Sama Impianti Srl
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Filing date
Publication date
Application filed by Sama Impianti Srl filed Critical Sama Impianti Srl
Publication of EP3575015A1 publication Critical patent/EP3575015A1/fr
Application granted granted Critical
Publication of EP3575015B1 publication Critical patent/EP3575015B1/fr
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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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/051—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having oscillating walls
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds
    • B22D11/0535—Means for oscillating the moulds in a horizontal plane
    • 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
    • B22D11/166—Controlling or regulating processes or operations for mould oscillation

Definitions

  • the object of the present invention is an oscillating device for an ingot mold of a continuous casting system, in particular for steel production.
  • the continuous casting process provides for pouring the liquid steel into an ingot mold, also known as a crystallizer, from which the steel is extracted continuously in the form of billets, blooms or slabs having a solidified shell and a core that has not yet solidified.
  • an ingot mold also known as a crystallizer
  • the function of the ingot molds is therefore to provide support for the growth of the thickness of the shell, up to the point wherein it becomes "self-supporting" for the semi-finished product that is extracted; the importance of the shell is evident, since it acts as a container for the liquid steel contained inside and as such must withstand the ferrostatic pressure.
  • the purpose of the present invention is to create an oscillating device for an ingot mold of a continuous casting system, in particular for the production of steel in billets, blooms or slabs, which is particularly effective.
  • a continuous casting system 1, for example for copper or steel, is intended for the production of semi-finished products such as billets, blooms or slabs.
  • the system comprises a movable ladle 2 suitable to contain the liquid steel, and a tundish 4 or distributor suitable to receive the liquid metal from the ladle, usually by gravity.
  • the system 1 further comprises an ingot mold 6, arranged downstream of the tundish 4.
  • the semi-finished product provided with a surface shell, but not completely solidified, is extracted from the bottom of the ingot mold following a characteristic curve, defined for example by the extrados of the same semi-finished product.
  • the system 1 comprises an oscillating device 8, engaged with the ingot mold 6, suitable to impose thereon an oscillating movement to avoid the adhesion of the shell of the solidified metal to the wall, thus facilitating the extraction of the semi-finished product.
  • the system 1 further comprises a roller device 10, located downstream of the ingot mold, comprising a plurality of pairs of rollers 12 or individual rollers 14 that define a forced path for the semi-finished product coming out of the ingot mold.
  • a roller device 10 located downstream of the ingot mold, comprising a plurality of pairs of rollers 12 or individual rollers 14 that define a forced path for the semi-finished product coming out of the ingot mold.
  • the path defined by the roller device 10 is initially arcuate and then straight, to accompany adequately the semi-finished product.
  • the system 1 further comprises a cooling chamber 16, superimposed on at least one section of the path defined by the roller device 10, preferably along the arcuate path, suitable for the forced cooling of the semi-finished product.
  • the cooling chamber 16 comprises a plurality of nozzles for spraying the coolant liquid, usually water.
  • system 1 comprises a straightener/extractor machine 20, located along the path defined by the roller device and in particular at the end of the arcuate section thereof.
  • the straightener/extractor machine 20 is suitable to straighten the semi-finished product, which downstream thereof continues along the straight path, and to extract the semi-finished product from the ingot mold.
  • the system 1 comprises a cutting machine 30, arranged downstream of the straightener/extractor machine 20, along the straight section of the path, suitable to cut the semi-finished product to the predefined length.
  • the oscillating device 8 comprises an upper oscillating frame 40 that supports the ingot mold 6 in an integral way; the ingot mold 6 will thus have the same oscillating movement as the oscillating frame 40.
  • the vertical oscillation is ⁇ 5 mm.
  • the oscillating frame 40 consists of a pair of cross members 42, 44, spaced transversely, carrying a surface 46, which in turn supports the ingot mold 6.
  • Said ingot mold 6 provides for an opening 6a above the plate 46, for the inlet of the liquid metal, and extends for the most part below the oscillating frame.
  • the oscillating device 8 further comprises a lower translating frame 50, equipped with alternating translational movement on an imaginary horizontal translation plane K.
  • the translating frame 50 rests on a horizontal reference plane T, parallel to the translation plane K.
  • the translating frame 50 consists of a pair of cross members 52, 54, spaced transversely, between which passes the lower portion of the ingot mold 6, which ends below the reference plane T.
  • the translating frame 50 further comprises a transverse axis 56, which connects the two cross members 52, 54 on one side. Said axis 56 is in turn connected to a connection 58, having mainly longitudinal extension, for the connection to actuation means, which will be discussed hereinafter.
  • the oscillating device 8 further comprises translation guides for the translating frame 50, suitable to guide said frame 50, and in particular the cross members 52, 54, in the horizontal alternating movement.
  • translation guides 60a-60d are provided, arranged two by two to support and guide the respective ends of the cross members 52, 54.
  • wheels 62 applied rotatably to the ends of said cross members 52, 54, housed in said translation guides 60a-60d to facilitate the alternating translational movement.
  • the oscillating device 8 further comprises a pair of front arms 72, 74 hinged at their respective ends to the translating frame 50 and to the oscillating frame 40, defining a lower front hinge axis Cai with the translating frame and an upper front hinge axis Cas with the oscillating frame 40.
  • the oscillating device 8 comprises a pair of rear arms 76, 78 hinged at their respective ends to the translating frame 50 and to the oscillating frame 40, defining a lower rear hinge axis Cpi with the translating frame and an upper rear hinge axis Cps with the oscillating frame 40.
  • the lower hinge axes Cai, Cpi lie on an imaginary plane substantially coinciding with the translation plane K of the translating frame 50, which also passes through the point of engagement of the connection 58 with the actuation means.
  • the lower rear hinge axis Cpi coincides with the direction of the axis 56 of the translating frame 50.
  • the upper hinge axes Cas, Cps lie on an imaginary inclined plane J, inclined with respect to the translation plane K.
  • the different length between the front arms 72, 74 and the rear arms 76, 78 brings the oscillating frame 40 to complete an arcuate trajectory that follows the contour of the extrados of the semi-finished product exiting the ingot mold.
  • the oscillating device 8 comprises at least one fixed trajectory guide 80, suitable to guide the oscillating frame 40 along an arcuate trajectory that follows the contour of the extrados of the semi-finished product leaving the ingot mold.
  • Said trajectory guide 80 in the presence of different lengths between the front arms 72, 74 and the rear arms 76, 78, functions as a safety stop.
  • the oscillating device 8 comprises a trolley 82, preferably equipped with wheels 84, movable in the trajectory guide 80, to constrain the oscillating frame 40 to follow said arcuate trajectory.
  • the trajectory guide 80 comprises a box body 81 equipped with a stop wall 83 against which, internally, the wheels 84 abut ( figure 5 ).
  • Said stop wall 83 is equipped internally with a guide surface 85, against which said wheels 84 come into contact, having an arcuate profile that follows the contour of the extrados of the semi-finished product coming out of the ingot mold, so as to guide the oscillating frame 40 to follow said arcuate trajectory.
  • the alternating translation of the translating frame 50 corresponds to an alternating translation of the oscillating frame 40, which remains always parallel to the horizontal plane, but vertically follows an arcuate trajectory corresponding to the extrados of the semi-finished product.
  • the actuation means are suitable to move the translating frame 50 with an alternating translational movement and are preferably applied operatively to the connection 58 of the translating frame 50.
  • said actuation means comprise a linear electric motor, preferably of the type with stroke control, operatively connected to the connection 58.
  • the oscillating device achieves the aforesaid object, since the oscillation, adhering to a trajectory that follows the extrados of the semi-finished product, causes the least disruption to the extraction of the semi-finished product.
  • the attainment of said arcuate trajectory by means of different lengths between the front arms and the rear arms allows the high loads involved to be supported, without these being supported only by the trajectory guide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP19175638.6A 2018-05-31 2019-05-21 Dispositif oscillant pour un moule d'une ligne de coulée continue Active EP3575015B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000005890A IT201800005890A1 (it) 2018-05-31 2018-05-31 Dispositivo di oscillazione per una lingottiera di un impianto per la produzione di acciaio in colata continua

Publications (2)

Publication Number Publication Date
EP3575015A1 true EP3575015A1 (fr) 2019-12-04
EP3575015B1 EP3575015B1 (fr) 2021-01-20

Family

ID=63312350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19175638.6A Active EP3575015B1 (fr) 2018-05-31 2019-05-21 Dispositif oscillant pour un moule d'une ligne de coulée continue

Country Status (2)

Country Link
EP (1) EP3575015B1 (fr)
IT (1) IT201800005890A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT525185B1 (de) * 2021-06-16 2024-02-15 Primetals Technologies Austria GmbH Stützvorrichtung für eine Kokille einer Stranggießanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215739A (en) * 1978-05-20 1980-08-05 Mannesmann Demag Ag Oscillating apparatus for strand casting mold
JPS55122954U (fr) * 1979-02-16 1980-09-01
US4263960A (en) * 1978-08-23 1981-04-28 Continua International Continuous Casting S.P.A. Rocking device for continuous casting molds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758554A1 (de) * 1968-06-26 1971-02-11 Schloemann Ag Vorrichtung zur Fuehrung von oszillierend angetriebcnen Stranggiesskokillen
FR2429631A1 (fr) * 1978-06-26 1980-01-25 Fives Cail Babcock Installation de coulee continue
LU88702A1 (de) * 1996-01-18 1997-07-18 Wurth Paul Sa Schwingvorrichtung fuer Stranggiesskokille

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215739A (en) * 1978-05-20 1980-08-05 Mannesmann Demag Ag Oscillating apparatus for strand casting mold
US4263960A (en) * 1978-08-23 1981-04-28 Continua International Continuous Casting S.P.A. Rocking device for continuous casting molds
JPS55122954U (fr) * 1979-02-16 1980-09-01

Also Published As

Publication number Publication date
IT201800005890A1 (it) 2019-12-01
EP3575015B1 (fr) 2021-01-20

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