EP0334800A2 - Tête de la fausse barre pour une installation de coulée continue horizontale - Google Patents

Tête de la fausse barre pour une installation de coulée continue horizontale Download PDF

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Publication number
EP0334800A2
EP0334800A2 EP89730044A EP89730044A EP0334800A2 EP 0334800 A2 EP0334800 A2 EP 0334800A2 EP 89730044 A EP89730044 A EP 89730044A EP 89730044 A EP89730044 A EP 89730044A EP 0334800 A2 EP0334800 A2 EP 0334800A2
Authority
EP
European Patent Office
Prior art keywords
strand
center
head
coupling part
curvature
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.)
Withdrawn
Application number
EP89730044A
Other languages
German (de)
English (en)
Other versions
EP0334800A3 (fr
Inventor
Achim Kubon
Klaus-Peter Ehlert
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0334800A2 publication Critical patent/EP0334800A2/fr
Publication of EP0334800A3 publication Critical patent/EP0334800A3/fr
Withdrawn legal-status Critical Current

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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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots

Definitions

  • the invention relates to a start-up head for a horizontal continuous casting plant with a continuous mold, the start-up head having a coupling part which forms a positive-locking, hook-shaped connection with the cast strand, which can be uncoupled by a tilting movement of the starting head, the hook-shaped coupling part being the side effective in the direction of pulling out the strand is undercut in an arc shape and runs in an arc shape on the opposite side.
  • a start-up head connected to a start-up strand is used to start up a continuous caster, the cross-section of which corresponds to the mold cross-section, so that it closes it at the start of the casting process.
  • the mold When the mold is filled with liquid steel, it surrounds the coupling part and creates a positive connection between the start of the casting strand and the start-up strand when it solidifies.
  • the coupling part provided on the starting head is designed in such a way that it can be separated from the casting strand by a swiveling movement.
  • a starting head which has a convex, hook-shaped coupling part.
  • the transition from the coupling part to the part causing the seal in the mold is designed in such a way that there is only a relatively small undercut or it is even more arcuate, so that there is a risk that the head will accidentally separate from the strand if only there is a slight pivoting.
  • a start-up head with the features of the preamble is known from European Patent 70 493.
  • the hook-shaped coupling part is designed in such a way that when the casting strand is pulled out, an unwanted decoupling in a secondary cooling zone, in which there are only a few or no strand guiding devices, is avoided, but nevertheless a safe and automatic decoupling is achieved at the intended station.
  • the known start-up head is only suitable for the usual continuous sheet casting systems, because it can only transmit forces acting in the pull-out direction from the starting strand to the casting strand.
  • the object of the invention is to design a starting head of the type mentioned in such a way that it can also be used in horizontal continuous casting plants without requiring any particular technical outlay.
  • the strand is not pulled out of the mold at a uniform speed, but tensile and shear forces are alternately applied to the strand in cycles, a holding time being interposed when changing from one direction of the applied force to the opposite direction.
  • the conventional reusable starting heads cannot be used in horizontal continuous casting machines because they are pushed out of the connection formed with the strand during recoil and possibly damage the mold or even separate completely from the strand.
  • 1 denotes the starting head, which is provided with an approximately hook-shaped coupling part 1a.
  • the starting head fills the cross section of the mold 2 with the part on the right in FIGS. 1 and 2.
  • a seal is provided at the edges 3 in the usual way.
  • the coupling part 1a is surrounded on three sides by material of the strand S. This creates a connection that is suitable for the transmission of forces.
  • the coupling part 1 a is limited by surfaces curved in a certain way.
  • the side of the hook-shaped coupling part 1a which is at the front in relation to the strand extraction direction 14, forms an undercut at 12 which, starting from the turning point at 11, runs on a circular arc around the center of curvature 6.
  • the center of curvature 6 lies above the strand center designated 10 and 14.
  • the outline of the coupling part 1a is also delimited by an arc, the center of curvature of which is 5.
  • This center of curvature 5 is also located above the longitudinal center line of the strand and has an even greater distance from it than is present between the center of curvature 6 and the longitudinal center 14 of the strand.
  • a dome-shaped surface is formed in area 8 when the start-up head is cast with liquid metal, against which the start-up head can press without forces occur that try to separate the start-up head from the strand.
  • the separation between start-up head and strand is carried out by a pivoting movement in the direction of the circular arc piece 13, with pivoting around the center point indicated at 4.
  • the center point for the pivoting movement required for separation is again above the longitudinal center of the strand, but between the centers of curvature 6 and 5. This ensures that when the starting head 1 is pivoted away, the coupling part 1 a easily stands out from the surrounding surfaces of the strand.
  • the undercut runs at 12 on a circular arc with around point 6.
  • the starting head is swiveled around the pivot point designated by 4 in FIG. 1, e.g. point 11 on the dashed line according to FIG. 11a, because the pivoting, viewed from point 11, takes place by a different radius than the radius of the curvature of the undercut at 12.
  • the hook-shaped side of the starting head rises from the surrounding metal mass.
  • the pivoting movement around the pivot point 4 is therefore not impeded on this side of the coupling part 1a.
  • the length of the transverse movement carried out by point 11 during the movement to 11a is indicated by 7b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)
EP19890730044 1988-03-24 1989-02-27 Tête de la fausse barre pour une installation de coulée continue horizontale Withdrawn EP0334800A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810304A DE3810304C1 (fr) 1988-03-24 1988-03-24
DE3810304 1988-03-24

Publications (2)

Publication Number Publication Date
EP0334800A2 true EP0334800A2 (fr) 1989-09-27
EP0334800A3 EP0334800A3 (fr) 1990-09-26

Family

ID=6350768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890730044 Withdrawn EP0334800A3 (fr) 1988-03-24 1989-02-27 Tête de la fausse barre pour une installation de coulée continue horizontale

Country Status (4)

Country Link
US (1) US4940075A (fr)
EP (1) EP0334800A3 (fr)
JP (1) JPH01278943A (fr)
DE (1) DE3810304C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2417134C2 (ru) * 2006-09-19 2011-04-27 Смс Зимаг Акциенгезелльшафт Способ непрерывной разливки металлической заготовки

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179042B1 (en) 1999-05-21 2001-01-30 Alcoa Inc. Non-hot crack bottom block for casting aluminum ingot
DE10031248A1 (de) * 2000-06-27 2002-01-10 Sms Demag Ag Anfahrstrangkopf für eine Metall-, insbesondere eine Stahl-Stranggießvorrichtung
CN106111924B (zh) * 2016-09-14 2017-11-17 湖南涉外经济学院 半连续铸造用引锭头

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1954107B2 (de) * 1962-05-21 1973-07-19 Anfahrstrang fuer metall-, insbesondere stahlstranggiessanlagen
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.
CH475049A (de) * 1968-04-29 1969-07-15 Concast Ag Verfahren und Vorrichtung zum Stranggiessen von Stahl
US3602290A (en) * 1968-08-23 1971-08-31 Mclouth Steel Corp Dummy bar for continuous casting
AT328119B (de) * 1973-10-19 1976-03-10 Voest Ag Vorrichtung fur stranggiessanlagen
GB1503487A (en) * 1975-01-30 1978-03-08 British Steel Corp Continuous casting
FR2335288A1 (fr) * 1975-12-18 1977-07-15 Fives Cail Babcock Tete de mannequin pour la coulee continue des metaux
US4381030A (en) * 1980-01-25 1983-04-26 Concast Ag Dummy bar head for a steel continuous casting installation containing an open-ended mold
DE3260836D1 (en) * 1981-07-17 1984-10-31 Concast Service Union Ag Dummy bar for a continuous casting plant
DE3219161C1 (de) * 1982-05-21 1983-10-20 Mannesmann AG, 4000 Düsseldorf Verfahren und Einrichtung zum Entkuppeln des Anfahrstrangs vom Gußstrang bei Stranggießen von Metall, insbesondere von Stahl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2417134C2 (ru) * 2006-09-19 2011-04-27 Смс Зимаг Акциенгезелльшафт Способ непрерывной разливки металлической заготовки

Also Published As

Publication number Publication date
EP0334800A3 (fr) 1990-09-26
JPH01278943A (ja) 1989-11-09
DE3810304C1 (fr) 1989-12-07
US4940075A (en) 1990-07-10

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