EP3377245B1 - Angiessvorrichtung einer stranggiessanlage und deren betrieb - Google Patents

Angiessvorrichtung einer stranggiessanlage und deren betrieb Download PDF

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Publication number
EP3377245B1
EP3377245B1 EP16790370.7A EP16790370A EP3377245B1 EP 3377245 B1 EP3377245 B1 EP 3377245B1 EP 16790370 A EP16790370 A EP 16790370A EP 3377245 B1 EP3377245 B1 EP 3377245B1
Authority
EP
European Patent Office
Prior art keywords
starting bar
head
starting
strand
connecting element
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.)
Active
Application number
EP16790370.7A
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German (de)
English (en)
French (fr)
Other versions
EP3377245A1 (de
Inventor
Martin Salmhofer
Josef Watzinger
Josef Guttenbrunner
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.)
Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Filing date
Publication date
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Publication of EP3377245A1 publication Critical patent/EP3377245A1/de
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    • 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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
    • 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
    • B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process

Definitions

  • the invention relates to a sprue of a continuous casting and a method for their operation.
  • a cast strand is formed from a metallic melt.
  • the metallic melt is conveyed into a mold of the continuous casting plant.
  • the mold is cooled, so that in the mold, the solidification of the melt begins.
  • surface areas of the melt solidify into a so-called strand shell, which encloses a still liquid metallic core.
  • the cast strand formed in the mold is discharged through a Kokillenausgang to a so-called strand guide, transported by the cast strand and is further cooled.
  • Anfahrstrangkexcellent which each form a positive hook-shaped connection with the casting strand head, which is achieved by a tilting movement of the Anfahrstrangkopfes relative to the cast strand.
  • a connection of a starter strand head with a cast strand head is only feasible with relatively thick casting strands (eg, with a strand thickness of more than 180 mm), since a pull-out force that is too thin can not be transferred if the casting strands are too thin.
  • the cast strand is cut off from the starter strand head firmly connected to it by means of a so-called pendulum scissors. Thereafter, the Anfahrstrang is laterally deported from the cast strand and placed on a Anfahrstrangablage. Subsequently, the casting strand remaining on the starter strand is separated from the starter strand. Before the next casting, the dummy bar is again conveyed via the strand guide to the mold in the casting position (so-called "bottom feeding").
  • EP 1 249 287 A1 discloses a method and an apparatus for starting a continuous casting plant, wherein a cold strand head is connected via a tie rod with a hot strip.
  • the tie rod is provided with a hinge pin which is rotatably mounted in a cylindrical recess of the cold strand head. By pivoting the cold-rod head relative to the hinge pin, the cold-rod head can be released from the tie rod.
  • the invention has for its object to provide an improved sprue of a continuous casting and a method for their operation, wherein the sprue is particularly suitable for the formation of thin casting strands.
  • An inventive casting device of a continuous casting plant which has a mold for forming a cast strand from a metal melt filled into the mold and a strand guide for transporting the cast strand downstream of the mold, comprises a starter strand with a starter strand head, which is used to close a mold exit of the mold during a continuous casting start is formed and a first Anfahrstrangende the Anfahrstrangs forms, with a second Anfahrstrangende the Anfahrstrangs releasably connectable pull-up device for pulling the Anfahrstrangs on the second Anfahrstrangende and at least one connecting element for connecting a G cleverstrangkopfes the cast strand with the Anfahrstrangkopf.
  • a first portion of the connecting element is releasably connectable to the Anfahrstrangkopf and a second portion of the connecting element is poured during the Strangg cashbeginns in the mold in the cast strand head.
  • the detachable connection of the connecting element with the Anfahrstrangkopf is a pivot joint, which is releasable by a resulting in pulling up the Anfahrstrang pivotal movement of the Anfahrstrangkopfes about a rotational axis of the pivot connection.
  • the detachable connection of the Anfahrstrangkopfes with the G fauxstrangkopf by at least one connecting element advantageously allows a connection even thin casting strands with the Anfahrstrangkopf that can be separated without cutting the G fauxstrangs of the Anfahrstrang and therefore no subsequent removal of a remaining strand of the G fauxstrang Sharings from Anfahrstrang requires.
  • the pulling up of the starter train also allows easy return of the starter train to the mold, for example with a Anfahrstrangwagen, for which no intermediate storage of the Anfahrstrangs on a Anfahrstrangablage is required and allows a "top feeding" the mold with the Anfahrstrang at the next casting.
  • the invention further provides that the releasable pivot joint between a connecting element and the Anfahrstrangkopf is formed by a propeller shaft bearing and in the propeller shaft bearing and extending along the axis of rotation propeller shaft, wherein the propeller shaft bearing is formed by the first portion of the connecting element and the propeller shaft part of Anfahrstrangkopfes is.
  • Characterized a detachable by the pivoting movement of the Anfahrstrangkopfes when pulling up the Anfahrstrangs connection of the Anfahrstrangkopfes is realized in a structurally simple manner with the G fauxstrangkopf.
  • An embodiment of the invention provides that the Anfahrstrangkopf for each connecting element has a recess for receiving the first portion of the connecting element. As a result, no additional space is consumed by a connecting element with respect to a fixed connection of the Anfahrstrangkopfes with the cast strand head.
  • a further embodiment of the invention provides that at least one connecting element has a hook-like articulated shaft bearing with a concave support surface for a propeller shaft and the Anfahrstrangkopf has at least one propeller shaft with a corresponding to the support surface convex contact surface.
  • the contact surface is located on the support surface when the connecting element is connected to the Anfahrstrangkopf, and is separated by the pivoting movement of the Anfahrstrangkopfes of the support surface.
  • At least one connecting element has a U-shaped articulated shaft bearing, from which a propeller shaft associated with the propeller shaft can be pulled out by pulling up the Anfahrstrangkopfes.
  • a propeller shaft associated with the propeller shaft can be pulled out by pulling up the Anfahrstrangkopfes.
  • an opening formed by the U-shaped propeller shaft bearing for its associated PTO shaft narrows towards the open end of the U and the PTO shaft has different dimensions in directions perpendicular to the axis of rotation, so that they only after the pivoting movement of the Anfahrstrangkopfes from the Cardan shaft bearing is pulled out.
  • a further embodiment of the invention provides that the second portion of at least one connecting element is T-shaped, wherein the bar of the T forms an end of the connecting element.
  • a further embodiment of the invention provides that the hoisting device comprises a winch. This advantageously allows a simple and space-saving design of the pulling-up device.
  • a further embodiment of the invention provides a dummy bar carriage on which the dummy bar can be transported from the pull-up device to the mold. This allows a return of the Anfahrstrangs to the mold for casting another cast strand.
  • At least one connecting element is connected to the starting line by a swivel connection before a continuous casting start and the starting line is positioned such that the starting line head closes the mold exit of the mold and the starting line is guided in the line guide.
  • the second section of the at least one connecting element is poured into the cast strand head of the casting strand.
  • the casting strand and the starter strand connected to the casting strand head are transported through the strand guide and the starter strand is pulled up during transport of the casting strand by the strand guide with the hoisting device at its second approach strand end so that the connection of the approach strand head with the at least one Detached connecting element and the Anfahrstrangkopf is separated from the at least one connecting element.
  • the method allows the connection and automatic separation of the dummy bar even with thin casting strands with the advantages already mentioned above.
  • a further embodiment of the method provides that the Anfahrstrang is pulled up by the puller after the second Anfahrstrangende the Anfahrstrangs has passed the strand guide. This allows the Anfahrstrang be separated immediately after the strand guide of the casting strand, and the Anfahrstrang can be transported back to the mold during the casting process, so that can be started immediately with the casting of another G fauxstrang after the cast strand has left the strand guide.
  • a further embodiment of the method provides that a pull-up speed, with which the dummy bar is pulled up, with a transport speed with which the cast strand is transported through the strand guide, is synchronized. This advantageously prevents the dummy bar from being pulled up too fast or too slowly.
  • a further embodiment of the method provides that the Anfahrstrang is applied after pulling up on a Anfahrstrangwagen and transported with the Anfahrstrangwagen in a transport direction to the mold.
  • a carousel end facing the puller device of the Anfahrstrangwagens is raised before applying the Anfahrstrangs and lowered after application or during application of the Anfahrstrangs.
  • the carousel end of the starter carriage facing the hoisting device may be raised to a height corresponding to the position of the second starting strand so as not to lower the starting line suspended from the hoisting device when it is being applied to the starting rod.
  • the dummy bar is preferably applied in the transport direction on the Anfahrstrangwagen, the second Anfahrstrangende facing the mold.
  • the Anfahrstrang on the Anfahrstrangwagen is already in a position in which he can then be reintroduced into the mold without having to be turned before, thereby facilitating the introduction of the Anfahrstrangs in the mold and is accelerated.
  • FIG. 1 schematically shows a part of a continuous casting 1 in a sectional view.
  • the continuous casting plant 1 comprises a mold 3, a strand guide 5 and a casting device 7. Further components of the continuous casting plant 1 such as a ladle and a distributor for filling the mold 3 are not shown.
  • a metallic melt 11 is conveyed into the mold 3.
  • the mold 3 is cooled, so that in the mold 3, the solidification of the melt 11 begins.
  • the solidifying melt 11 is discharged from the mold 3 through a Kokillenausgang 13 to the strand guide 5 and forms the casting strand 9, which is transported through the strand guide 5 and thereby cooled further with a cooling device, not shown.
  • the strand guide 5 has strand guide rollers 15 for guiding and supporting the cast strand 9.
  • the casting device 7 comprises a starter strand 17 with a starter strand head 19, a pull-up device 20 and a launching rod carriage 23.
  • the Anfahrstrangkopf 19 forms a first Anfahrstrangende the Anfahrstrangs 17 and is designed to close the Kokillenausgangs 13 at a Strangg discernbeginn to form a G toysstrangkopf 10 of the casting strand 9.
  • the Anfahrstrangkopf 19 is releasably connected at the Strangg screenbeginn by connecting elements 25 with the strand core 10, see the FIGS. 2 to 5 and their description.
  • the pull-up device 20 is detachably connectable to a second Anfahrstrangende 27 of the Anfahrstrangs 17 and formed for pulling the Anfahrstrangs 17 to the second Anfahrstrangende 27.
  • the hoisting device 20 a winch 21 and a connection unit 22, see FIG. 6 and their description.
  • the cast strand 9 and the launch strand 17 connected to the cast strand head 10 are transported through the strand guide 5.
  • the Anfahrstrangende 27 After the second Anfahrstrangende 27 has passed the strand guide 5, the Anfahrstrang 17 is behind the strand guide 5 with the pulling-up device 20 at the second Anfahrstrangende 27 pulled up.
  • By pulling up the Anfahrstrangkopf 19 is automatically released from the casting strand 10, see the FIGS. 2 to 5 and their description.
  • FIG. 1 shows the dummy bar 17 once in a position immediately before hoisting, in which the second Anfahrstrangende 27 has passed the strand guide 5, and hanging again after pulling on the hoisting device 20.
  • a puller 20 facing the carriage end 24 of the Anfahrstrangwagens 23 is raised to a corresponding position to the second Anfahrstrangendes 27 height in order not to lower the hanging on the hoisting device 20 Anfahrstrang 17.
  • the Anfahrstrang 17 is then applied in the transport direction 29 on the Anfahrstrangwagen 23, wherein the second Anfahrstrangende 27 of the mold 3 faces.
  • the Anfahrstrang 17 is already on the Anfahrstrangwagen 23 in a position in which he then back into the mold. 3 can be introduced without having to be turned before.
  • FIG. 1 shows the Anfahrstrangwagen 23 once in a position with the car end raised 24 and again in a position after lowering the car end 24th
  • FIGS. 2 and 3 show a Anfahrstrangkopf 19, a G beaustrangkopf 10 and a first embodiment of connecting elements 25 in each case a perspective sectional view. It shows FIG. 2 the Anfahrstrangkopf 19 and the cast strand head 10 when they are connected together, and FIG. 3 shows the starter string head 19 and the cast strand head 10 when their connection is released.
  • Each connecting element 25 has a first portion 31, which is detachably connectable to the Anfahrstrangkopf 19, and a second portion 33 which is poured during the Strangg cashbeginns in the casting strand head 10 and thereby firmly connected to the casting strand head 10, on.
  • the Anfahrstrangkopf 19 has for each connecting element 25 has a recess 34 for receiving the first portion 31 of the connecting element 25.
  • the detachable connection of the first portion 31 of the connecting element 25 with the Anfahrstrangkopf 19 is a pivot joint, which is releasable by a rising of the Anfahrstrangs 17 pivotal movement of the Anfahrstrangkopfes 19 about a rotational axis 35 of the pivot connection.
  • the pivot axis 35 extends in a transverse direction of the starter string 17 along a casting string side edge of the starter string head 19.
  • the pivot joint is formed by a propeller shaft bearing formed by the first portion 31 of the joint member 25 and one mounted in the propeller shaft bearing and along the rotation axis 35 Cardan shaft 37, which is part of the Anfahrstrangkopfes 19, formed.
  • the propeller shaft bearings are each formed like a hook and each have a concave support surface 39 for a propeller shaft 37.
  • the propeller shafts 37 each have a corresponding to a support surface 39 convex contact surface 41 which bears against the support surface 39 when the connecting element 25 is connected to the Anfahrstrangkopf 19, and is separated by the pivoting movement of the Anfahrstrangkopfes 19 of the support surface 39.
  • the support surface 39 and the contact surface 41 in a plane perpendicular to the axis of rotation 35 each have the contour of a quarter circle.
  • Each propeller shaft 37 has in a plane perpendicular to the axis of rotation 35 a circular sector-shaped cross section, which, when the strand core head 10 and the Anfahrstrangkopf 19 are connected to the casting strand head 10 facing the first straight edge region, a substantially perpendicular thereto second straight edge region and the propeller shaft bearing facing circular arc-shaped edge region has.
  • each connecting element 25 is T-shaped, wherein the bar of the T forms an end of the connecting element 25.
  • FIGS. 4 and 5 show a Anfahrstrangkopf 19, a G beaustrangkopf 10 and a second embodiment of connecting elements 25 in each case a perspective sectional view. It shows FIG. 4 the Anfahrstrangkopf 19 and the cast strand head 10 when they are connected together, and FIG. 5 shows the starter string head 19 and the cast strand head 10 when their connection is released.
  • each connecting element 25 has a first portion 31 which is detachably connectable to the Anfahrstrangkopf 19, and a second portion 33 which is poured during the Strangg cashbeginns in the casting strand head 10 and thereby firmly connected to the casting strand 10 on.
  • the Anfahrstrangkopf 19 has for each connecting element 25 has a recess 34 for receiving the first portion 31 of the connecting element 25.
  • the detachable connection of the first portion 31 of the connecting element 25 with the Anfahrstrangkopf 19 is in turn a pivot joint, which is releasable by a pulling up the Anfahrstrangs 17 pivotal movement of the Anfahrstrangkopfes 19 about a rotational axis 35 of the pivot connection.
  • the swivel connection is formed by a propeller shaft bearing, which is formed by the first portion 31 of the connecting element 25, and a propeller shaft 37 which is mounted in the propeller shaft bearing and runs along the axis of rotation 35 and forms part of the starter strand head 19.
  • the propeller shaft bearings are each U-shaped, so that the propeller shafts 37 are pulled out by pulling up the Anfahrstrangkopfes 19 from the propeller shaft bearings.
  • the opening formed by a propeller shaft bearing for its associated propeller shaft 37 narrows toward the open end of the U and the propeller shaft 37 has different dimensions in directions perpendicular to the axis of rotation 35, so that it can be pulled out of the propeller shaft bearing only after the pivoting movement of the starter strand head 19.
  • each connecting element 25 is again T-shaped, with the bar of the T forming one end of the connecting element 25.
  • FIGS. 2 to 5 illustrated embodiments are preferably poured into a the Anfahrstrangkopf 19 facing region of the cast strand head 10, for example, metal chips to prevent sticking of the cast strand head 10 to the Anfahrstrangkopf 19 and overheating of the Anfahrstrangkopfes 19 during casting.
  • FIG. 6 shows the hanging on the connecting unit 22 of the pulling-up device 20 Anfahrstrang 17 shortly after its separation from the casting strand head 10 in a side view.
  • the Anfahrstrang 17 is formed as a chain of mutually movable chain links 43 with the Anfahrstrangkopf 19 as an initial member.
  • the connecting unit 22 comprises a hook element 45 which is hooked into a chain link 43 forming the second starting strand end 27.
  • FIG. 7 shows a flowchart of a method for operating the casting device 7 with method steps S1 to S5.
  • a first method step S1 the first sections 31 of connecting elements 25 are first connected by a respective pivot connection with the Anfahrstrangkopf 19 and the Anfahrstrang 17 is then positioned such that the Anfahrstrangkopf 19 closes the Kokillenausgang 13 of the mold 3 and the Anfahrstrang 17th before a Strangg cordbeginn is guided in the strand guide 5.
  • a second method step S2 the second sections 33 of the connection elements 25 connected to the starter strand head 19 are cast into the casting strand head 10 during the start of continuous casting during the formation of the cast strand head 10.
  • a third method step S3 after the formation of the cast strand head 10, the cast strand 9 and the launch strand 17 connected to the cast strand head 10 are transported through the strand guide 5.
  • a fourth method step S4 during the transport of the cast strand 9 through the strand guide 5, the starter strand 17 is pulled up by the pull-up device 20 at its second start-up end 27 so that the connections of the start-up strand head 19 with the connection elements 25 are released and the starter strand head 19 is released from the connection elements 25 is disconnected.
  • a fifth method step S5 the starter strand 17 is applied to the Anfahrstrangwagen 23 after pulling up and then transported with the Anfahrstrangwagen 23 to the mold 3.
  • the first method step S1 is carried out again after the fifth method step S5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)
  • Piles And Underground Anchors (AREA)
EP16790370.7A 2015-11-18 2016-11-03 Angiessvorrichtung einer stranggiessanlage und deren betrieb Active EP3377245B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT509812015A AT517976B1 (de) 2015-11-18 2015-11-18 Angießvorrichtung einer Stranggießanlage und deren Betrieb
PCT/EP2016/076514 WO2017084880A1 (de) 2015-11-18 2016-11-03 Angiessvorrichtung einer stranggiessanlage und deren betrieb

Publications (2)

Publication Number Publication Date
EP3377245A1 EP3377245A1 (de) 2018-09-26
EP3377245B1 true EP3377245B1 (de) 2019-10-09

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EP16790370.7A Active EP3377245B1 (de) 2015-11-18 2016-11-03 Angiessvorrichtung einer stranggiessanlage und deren betrieb

Country Status (6)

Country Link
EP (1) EP3377245B1 (zh)
JP (1) JP6633205B2 (zh)
KR (1) KR20180084938A (zh)
CN (1) CN108348991B (zh)
AT (1) AT517976B1 (zh)
WO (1) WO2017084880A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113894260B (zh) * 2021-09-30 2023-04-11 上海二十冶建设有限公司 一种大断面矩形坯连铸机快速脱引锭结构及操作方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508896C2 (de) * 1966-04-30 1975-02-20 Willi Manthey Anfahrkopf für eine Brammen-Stranggieftanlage
CH475049A (de) * 1968-04-29 1969-07-15 Concast Ag Verfahren und Vorrichtung zum Stranggiessen von Stahl
NL159605B (nl) * 1968-04-29 1979-03-15 Concast Ag Startkop voor het bij het begin van het gieten van metaal in een gekoelde, verticale strenggietcoquille afdichten van de aan de onderzijde van de coquille gelegen opening.
AT340624B (de) * 1976-02-26 1977-12-27 Voest Ag Einrichtung zum trennen des anfahrstranges vom warmstrang in einer stranggiessanlage
DE2637824C3 (de) * 1976-08-21 1980-02-21 Mannesmann Demag Ag, 4100 Duisburg Transportwagen für den Anfahrstrang einer Metallstranggießanlage
AT365104B (de) * 1980-03-05 1981-12-10 Voest Alpine Ag Einrichtung zum trennen eines an einen anfahrstrang kuppelbaren anfahrstrangkopfes von einem gussstrang in einer stranggiessanlage
JPH0433110A (ja) * 1990-05-30 1992-02-04 Toshiba Corp 連続鋳造設備のダミーバー姿勢制御装置
CN2417951Y (zh) * 2000-01-31 2001-02-07 上海宝钢集团公司 圆坯及方坯连铸快封引锭装置
DE10118096A1 (de) * 2001-04-11 2002-10-17 Sms Demag Ag Verfahren und Vorrichtung zum Anfahren einer Stranggießanlage
JP2003053495A (ja) * 2001-08-08 2003-02-26 Hitachi Zosen Corp 連続鋳造設備のダミーバー挿入装置
JP2004017074A (ja) * 2002-06-14 2004-01-22 Jfe Steel Kk リンク式ダミーバー及びダミーバーヘッドの切り離し方法
CN203265562U (zh) * 2011-11-11 2013-11-06 西门子Vai金属科技有限责任公司 适用于连续铸造设备的引锭杆组件

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
AT517976B1 (de) 2019-11-15
EP3377245A1 (de) 2018-09-26
AT517976A1 (de) 2017-06-15
KR20180084938A (ko) 2018-07-25
CN108348991A (zh) 2018-07-31
JP6633205B2 (ja) 2020-01-22
CN108348991B (zh) 2020-10-16
JP2018534146A (ja) 2018-11-22
WO2017084880A1 (de) 2017-05-26

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