EP0172449A2 - Dispositif de guidage aux bandes de coulée d'une lingotière de coulée continue à double bande - Google Patents

Dispositif de guidage aux bandes de coulée d'une lingotière de coulée continue à double bande Download PDF

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Publication number
EP0172449A2
EP0172449A2 EP85109477A EP85109477A EP0172449A2 EP 0172449 A2 EP0172449 A2 EP 0172449A2 EP 85109477 A EP85109477 A EP 85109477A EP 85109477 A EP85109477 A EP 85109477A EP 0172449 A2 EP0172449 A2 EP 0172449A2
Authority
EP
European Patent Office
Prior art keywords
casting
mold
support elements
mold space
support
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Withdrawn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
EP85109477A
Other languages
German (de)
English (en)
Other versions
EP0172449A3 (fr
Inventor
Gerd Artz
Gerhard Beckmann
Dieter Figge
Clemens Philipp
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of EP0172449A2 publication Critical patent/EP0172449A2/fr
Publication of EP0172449A3 publication Critical patent/EP0172449A3/fr
Withdrawn legal-status Critical Current

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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
    • B22D11/06—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
    • B22D11/0677—Accessories therefor for guiding, supporting or tensioning the casting belts
    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams

Definitions

  • the invention relates to a guide device on the casting belts of a double belt continuous casting mold, which is particularly suitable for strand cross sections with a large width and whose mold space is laterally limited by articulated side dams adjoining the casting belts, with casting belt deflection drums arranged at the mold space inlet and outlet, with rows arranged between them , rotatably held center support elements and with side support elements which run in the longitudinal direction of the mold space and form stationary support sections and which contact the casting belts in contact with the mold space or the side dams.
  • the generic guide device known from US Pat. No. 3,937,274 has stationary sliding guides for supporting the casting belts in the region of the side dams, which guide the space between the
  • support rollers are provided at greater distances from one another, the narrow support shoulders of which abut the adjacent casting belt.
  • the invention has for its object to further develop a guide device of the type mentioned in such a way that without impairing the cooling of the double belt continuous casting mold in the required section a proper support of the casting belts in the longitudinal direction and across the width of the mold space is ensured.
  • the components of the guide device, in particular also in the area of the side dams, should be such that their points of contact with the casting belts change continuously and, consequently, they cannot assume impermissibly high temperatures.
  • the management facility is also supposed to Enabling the production of strand cross sections with a large width (above 250 mm up to approximately 1200 mm), in particular also when the metal melt entering the mold space is under pressure.
  • the object is achieved by a guide device with the features of claim 1.
  • the basic idea of the invention is to design the side support elements opposite the side dams with respect to the casting belt with rotating bodies in such a way that they form support sections with a sufficiently large longitudinal extension in the inlet area of the mold space (corresponding to a maximum of the first quarter of the length of the mold space in the direction of casting) and - to avoid permanent contacts in the area of the high temperatures that occur - only temporarily facing the casting belts to be supported.
  • the support sections result from the fact that at each point in time a plurality of rotating bodies bear against the adjacent casting belt at least point or line.
  • the equipment of the center guide elements with single rollers has the advantage in particular in the production of strand cross-sections with a larger width that the use of long back-up rollers with possibly considerable diameters is dispensed with, i.e. the deflection of the associated trunnions can be mastered in the desired manner without the space required normally can.
  • the center guide elements opposite the mold cavity with respect to the casting belt can have smaller mutual spacings in the longitudinal direction of the mold cavity, that is to say support the adjacent casting belt more uniformly and in particular also in the vicinity of the casting belt deflection drums.
  • the side support elements are preferably designed so that the diameter of their rotary body is several times smaller than the length of the support section, which is formed by the entirety of the respective supporting rotary body of the side support element in question (claim 2).
  • the individual rolls which follow one another in the longitudinal direction of the mold space are advantageously arranged laterally offset from one another (Anspoxh 3); that way you can accommodate enough available individual rolls of the available space.
  • These are in particular designed so that they support the casting belt in question several times: they then have at least two roller rims arranged at a distance from one another.
  • each support beam - apart from the side support elements - carries several transverse rows with individual rollers in the area of the mold cavity.
  • Intermediate webs are arranged between the adjacent supporting beams, which cause the supply and discharge of a coolant in the casting belt section in question and between the side support elements in a manner known per se.
  • the rotating bodies of the side support elements preferably consist of revolving rollers held in housings, which are movable on endless guideways with partially straight guide surfaces (claim 5) and follow the movement of the adjacent casting belt; the housing, the endless guideway and the idler rollers are each made of rustproof material.
  • Each housing can have a plurality of revolving rollers lying next to one another (ie transversely to its longitudinal extent), which either have several independent chains or at least one multiple chain form.
  • the width of the idler roller or the adjacent idler rollers of each housing should normally be such that it is at least as large as the width of the associated side dam.
  • roller cages are used, the guideways of which form an oval with a vertical plane (claim 6). In this way it is ensured that the revolving rollers support the adjacent casting belt several times and in a straight line only during part of their revolving movement.
  • the casting belt in the area of the associated side dam only has to be supported over the partial length of the mold space that the strand to be produced needs to form a sufficiently stable strand shell.
  • the proposal is made, the upper and lower frame to support the top and bottom side support elements, the associated casting belt and the side dams against one another (claim 8).
  • the upper frame is preferably kept movable in such a way that it can adapt to the temperature-related deformation of the side dams. This can be achieved in that the upper frame - in contrast to the fixed lower frame - is held by two universal joints (claim 9).
  • the upper frame is preferably held on two swivel arms, each of which can be moved about a longitudinal axis pointing in the longitudinal direction of the mold space and a transverse axis lying perpendicular thereto and each having a counterweight.
  • the two swivel arms provide the upper frame with sufficient mobility, which means that the required tightness between the casting belts and the side dams is ensured in the entry area via the side support elements.
  • the setting of the upper frame with respect to the lower frame can be simplified in that the former is held vertically adjustable in the vertical direction (claim 10); hydraulic cylinders in particular are used as the adjustment drive.
  • the upper and lower frames are suspended on a stand which supports them together, the lower frame attached to the stand on one side on the side opposite the stand having a detachable support unit Has the shape of a transverse carriage; this is equipped with a plurality of supporting parts which follow one another in the longitudinal extent of the subframe and on which it can be supported in the working position (claim 11).
  • the use of the slide ensures that the lower frame, which is also loaded by the upper frame, has a sufficiently stable support, but at the same time the continuous mold in the area of the mold space is accessible to the required extent.
  • the upper frame which is movable (with respect to the supporting, stationary environment), is advantageously equipped with a weight compensation (claim 12).
  • the casting belts 2 to 4 are in the range of K o-kill chamber 1 in the same direction in the drawing plane.
  • the group consisting of thin steel strips G inteb Sn 2, 3, made of a bronze alloy members of the side dams 4 are not cooled during the casting process.
  • the support of the lower casting belt 3 is carried out (as well as that of the upper casting belt 2) via two eiten 1 elemente S 5, are opposed to the the left and right side dam in the inlet region of the Kokillenraums.
  • the entry area is to be understood as the partial length of the mold space that is required to form a sufficiently stable strand shell; this partial length is normally about a fifth, but at most a quarter of the length of the mold space.
  • the in the area between the side support elements 5, i.e. Center support elements arranged below (or above) the mold space 1 consist of individual rollers 9 and 10, which have two or three roller rings 9a and 10a spaced apart from one another for casting belt support and which are each arranged in a recess 11 in the associated supporting beam 7 (cf. Fig. 1).
  • Each support beam alternately accommodates three or four individual rollers 9 (see FIG. 3) or 9 and 10 (see FIG. 1) in three transverse rows in succession, the individual rollers in the subsequent transverse row being laterally offset with respect to the individual rollers of the preceding transverse row are.
  • roller bearings 12 The individual rollers of each transverse row are supported via roller bearings 12 on a common support pin 1 3, which is fastened outside the recesses 11 in suitable bores 14 of the support beam 7 and between the brackets 6.
  • each side support element 5 protrudes counter to the casting direction (arrow 16) into a groove-shaped recess 17a of the associated front casting belt deflection drum 17 such that its initial section lies in front of the mold space entrance; this is indicated by the connecting line 18 between the axes of rotation 19 of the two front casting belt deflection drums 17.
  • the length of each side support element 5 is dimensioned such that the adjacent casting belt (that is, the lower casting belt 3 according to FIG. 2) receives the required support over the entire length of the entry area under the action of the overall supporting rollers 15.
  • the console 6 is shaped in the area of the casting belt deflection drum 37 in such a way that the side support element 5 rounded in its initial section can assume the position already mentioned with respect to the mold space inlet 18.
  • the space between the supporting beams 7 adjacent in the longitudinal direction of the mold space and below the lower casting belt 3 (or above the upper casting belt 2) is divided into cooling sections by intermediate webs 20, in the area of which the casting belts between the interacting side support elements in a manner known per se with a Coolant.
  • FIG. 3 The embodiment of the subject matter of the invention shown in FIG. 3 has, in the casting direction (arrow 16) successively and in each case separately from one another by the intermediate web 20, a plurality of supporting beams 7.
  • these comprise ten or eleven individual rollers 9 in succession in three transverse rows, each transverse row being alternately equipped with three or four individual rollers.
  • the result of the arrangement described is that the support of the adjacent casting belt (thus, for example, of the lower casting belt 3 shown in FIG. 1) formed by the individual rolls changes continuously with its movement in the casting direction; it must also be taken into account that the line of contact formed with the casting belt also reproduces the rotary movement of the individual rollers.
  • the representation in question also reveals that the casting belt to be supported, not shown, is also longitudinal in the region of the side support elements 5 Direction of the mold space 1 (see. Fig. 1) and in the casting direction receives a support, the longitudinal extent of which corresponds approximately to the support length, which is formed in the longitudinal direction by the entirety of the individual rollers 9 of the two support beams 7.
  • Adequate support of the casting belts in the area of the side dams can be achieved when using shorter side support elements 5 in that they each form a zigzag line in the longitudinal direction or pouring direction (arrow 16) (FIG. 4).
  • the side support elements are held with respect to the associated side dam 4 so that its center line (seen in plan view) coincides approximately with the center line of the zigzag line:
  • the inner side support elements 5 thus also support the relevant casting belt in the area of the mold space at.
  • the mutual overlap of the side support elements forming the zigzag line is selected such that an uninterrupted support section with the required longitudinal extent in the order of magnitude of the entry region of the mold space is formed via the associated circulating rollers.
  • the side support elements 5 each consist of a housing 21 with an oval endless guideway 21a, on which a larger number of idler rollers 15 can rotate according to the movement of the casting belt to be supported.
  • the revolving rollers are held in known manner in a cage 22 which is movably supported in the guide slits 21b of the casing adapted and possibly mlaufrollen falling out of U prevented (Fig. 5b).
  • the idler rollers 15 protrude slightly beyond the housing 21 and form a support section with the length S which is several times larger than the diameter of the idler rollers.
  • the casting belt resting on the outer deflection rollers thus receives a fixed support in the area of the support section S, which is composed of a large number of individual supports and changes at periodically recurring intervals in that the relevant ones
  • U roller 15 temporarily leave the overhead straight guide surface of the guideway with the movement of the casting belt.
  • a holding rail can also be used, which secures the circulation protruding beyond the housing 21 and prevents it from falling out.
  • the support width B formed by the revolving rollers transversely to the longitudinal extent of the housing is at most as large as the width of the associated side dam 4, but preferably smaller than the side dam width (cf. FIG. 6).
  • the housing and the associated guideways are dimensioned so long that the support section formed by the entirety of the supporting idler rollers 15 is at least the length of the entrance area of the mold room 1 corresponds.
  • the upper and lower frames are supported on one another via rigid spacer bolts in such a way that there is a margin of the order of magnitude of several tenths of a millimeter between the support rollers and the adjacent casting belts.
  • the upper and lower frames 24 and 8 are held so as to be movable relative to one another.
  • the upper frame lies non-positively on the stationary subframe, specifically via its side support elements 5, the upper casting belt 2, the side dams 4, the lower casting belt 3 and the side support elements 5 assigned to the subframe 8.
  • the K okillenraum 1 with the horizontal (base 31) forms an angle of less than 10 ° includes.
  • Inadmissible evasive movements of the casting belts 2 and 3 are excluded in that the upper and lower frames 24 and 8 in the already described Are equipped with side support elements that support the casting belts in the entrance area of the mold space from above or from below and hold them against the side dams.
  • Fig. 7a, b The embodiment shown in Fig. 7a, b is designed so that the subframe 8 can only be locked in a certain inclined position with the correspondingly arranged support pins of the carriage 37.
  • the double strip continuous casting mold shown, together with the stand 28, can therefore also be arranged immovably, i.e. do not have the swivel drive 30 and the swivel axis 29 (cf. FIG. 7a).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP85109477A 1984-08-25 1985-07-27 Dispositif de guidage aux bandes de coulée d'une lingotière de coulée continue à double bande Withdrawn EP0172449A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431316A DE3431316C2 (de) 1984-08-25 1984-08-25 Führungseinrichtung an den Gießbändern einer Doppelbandstranggießkokille
DE3431316 1984-08-25

Publications (2)

Publication Number Publication Date
EP0172449A2 true EP0172449A2 (fr) 1986-02-26
EP0172449A3 EP0172449A3 (fr) 1986-12-30

Family

ID=6243887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109477A Withdrawn EP0172449A3 (fr) 1984-08-25 1985-07-27 Dispositif de guidage aux bandes de coulée d'une lingotière de coulée continue à double bande

Country Status (6)

Country Link
US (1) US4601324A (fr)
EP (1) EP0172449A3 (fr)
JP (1) JPS6160245A (fr)
AU (1) AU4564885A (fr)
CA (1) CA1230730A (fr)
DE (1) DE3431316C2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205646A1 (fr) * 1985-06-27 1986-12-30 Fried. Krupp Gesellschaft mit beschränkter Haftung Lingotière pour la coulée continue entre deux bandes, en particulier pour la coulée de l'acier
US5477912A (en) * 1993-09-28 1995-12-26 Aluminum Company Of America Roll for use in a belt caster and an associated method
US5725046A (en) * 1994-09-20 1998-03-10 Aluminum Company Of America Vertical bar caster
US5787968A (en) * 1995-12-28 1998-08-04 Larex A.G. Movably mounted side dam and an associated method of sealing the side dam against the nozzle of a belt caster
US5778967A (en) * 1996-01-11 1998-07-14 Larex A.G. Side dam for a caster having improved contact with solidifying metal
US5671801A (en) * 1996-01-11 1997-09-30 Larex A.G. Cooling system for a belt caster and associated methods
ATE274388T1 (de) * 1996-06-07 2004-09-15 Salzgitter Ag Bandgiesseinrichtung
US7888158B1 (en) * 2009-07-21 2011-02-15 Sears Jr James B System and method for making a photovoltaic unit
US20110036531A1 (en) * 2009-08-11 2011-02-17 Sears Jr James B System and Method for Integrally Casting Multilayer Metallic Structures
US20110036530A1 (en) * 2009-08-11 2011-02-17 Sears Jr James B System and Method for Integrally Casting Multilayer Metallic Structures

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB837473A (en) * 1955-12-27 1960-06-15 Hazelett Strip Casting Corp Improvements in or relating to apparatus for casting metals
CH426114A (de) * 1964-12-11 1966-12-15 Alusuisse Verfahren zum Giessen von bandförmigen breiten Metallplatten und Maschine hierfür
US3937274A (en) * 1974-05-15 1976-02-10 Hazelett Strip-Casting Corporation Belt back-up apparatus and coolant application means for twin-belt casting machines

Also Published As

Publication number Publication date
CA1230730A (fr) 1987-12-29
JPS6160245A (ja) 1986-03-27
AU4564885A (en) 1986-02-27
US4601324A (en) 1986-07-22
DE3431316C2 (de) 1986-01-16
DE3431316A1 (de) 1985-07-18
EP0172449A3 (fr) 1986-12-30

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