EP0041498A2 - Installation de coulée continue en courbe - Google Patents

Installation de coulée continue en courbe Download PDF

Info

Publication number
EP0041498A2
EP0041498A2 EP81890090A EP81890090A EP0041498A2 EP 0041498 A2 EP0041498 A2 EP 0041498A2 EP 81890090 A EP81890090 A EP 81890090A EP 81890090 A EP81890090 A EP 81890090A EP 0041498 A2 EP0041498 A2 EP 0041498A2
Authority
EP
European Patent Office
Prior art keywords
roller
strand
rollers
longitudinal
bending device
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Withdrawn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
EP81890090A
Other languages
German (de)
English (en)
Other versions
EP0041498A3 (en
Inventor
Aktiengesellschaf Voest-Alpine
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.)
Voestalpine AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0041498A2 publication Critical patent/EP0041498A2/fr
Publication of EP0041498A3 publication Critical patent/EP0041498A3/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal

Definitions

  • the invention relates to a continuous sheet caster, in particular a steel slab caster, with a strand guide arranged below the mold, which has two mutually opposite roller conveyors, the rollers of which are mounted on frame parts, the spacing of opposing parts of the frame and thus the spacing of the roller conveyors being variable in accordance with a strand cross section to be set is.
  • the distance between the roller conveyors lying opposite one another is usually carried out by displacing one of the roller conveyors in parallel. If, for example, the roller conveyor located on the inside of the arch is moved inwards to increase the strand thickness, i.e. towards the center of the curvature, the rollers arranged at the ends of adjacent scaffolding parts (e.g. on a strand bending device and on an adjoining strand circular arch guide) come closer . In order to avoid a collision of these rollers, it is necessary - with roller conveyors set to the smallest thickness - to have a disproportionately large roller spacing between the adjacent end rollers of the adjacent strand guide to provide equipment.
  • rollers In order to avoid these disadvantages, it has been proposed to store the rollers on roller carriers in the case of a frame part.
  • interchangeable roller carriers adapted to different strand cross-sectional formats are used in their dimensions. These roller carriers have different lengths in particular; the rollers are arranged on them at equal intervals.
  • this construction it is possible to achieve even roll spacings between the rolls for each set strand thickness, etc. also for the end rolls of neighboring scaffolding parts. to comply with different strand formats, and this proposed solution is particularly advantageous for scaffolding parts extending in the longitudinal direction over a short part of the circular arc guide, but this solution requires storage of differently dimensioned roller carriers and complex replacement of the roller carriers.
  • the invention aims at avoiding these disadvantages and difficulties and has as its object to provide a bow-type of the above-described type, in which a changeover for the purpose of adjusting the distance of the opposed roller conveyors ent - speaking the desired strand thickness such possible is that the distance the end rolls of adjacent scaffolding parts remain approximately the same, and the retrofitting of the system can be carried out in a simple manner and without requiring a great deal of effort.
  • rollers of at least one of the roller conveyors are arranged such that they can be displaced in the longitudinal direction of this roller conveyor and can be fixed in different positions on the framework part.
  • only the rollers of the inner roller conveyor can be moved.
  • rollers of at least one roller conveyor of the strand bending device can expediently be displaced.
  • rollers of the strand bending device and the rollers of the strand arc guide are each fastened to longitudinal members extending in the longitudinal direction of the roller tracks, then according to a preferred embodiment the longitudinal members of the strand bending device are laterally to the longitudinal members of the strand arc guide laterally in the longitudinal direction the rollers are staggered. This has the advantage that the longitudinal beams of the strand bending device or strand circular arc guide are prevented from colliding when they are adjusted to a large strand thickness.
  • the roller mounts are expediently supported in each case by means of support surfaces on the scaffolding part on a counter support surface arranged at an equidistant distance from the roller conveyor.
  • roller holders arranged on the roller ends can advantageously be fastened by means of an approximately radially directed fastening bolt inserted in a longitudinal slot of the divided longitudinal members, whereby Expediently, the fastening bolts each penetrate the axis of the roller body.
  • the longitudinal members carrying the roller holders arranged on the roller ends have open slots to the outside of the longitudinal members, each of the slots ° having a support surface for the fastening bolt.
  • the support surfaces of the slots each close with the tangent surface, placed on the roller conveyor part formed by the support roller attached there, in the direction of the pull-out direction widening angle that is smaller than the friction angle of the friction prevailing between the longitudinal beam and the roller holder or inserts.
  • a further preferred embodiment is characterized in that the support surfaces of the roller holders arranged at the ends of the rollers are asymmetrical, the respective ones extending in the direction of the strand tion extending half of the roller bracket is freely cantilevered over the support surfaces.
  • the intersection of the center line of the fastening bolt and the force acting from the strand on the roller lies the greatest inclination against the has radial direction at this point, within a friction wedge erected on the tilt line of the roller holder.
  • FIG. 1 shows a side view of a strand guide of a sheet continuous casting installation, partly in section (according to line II of Fig. 3)
  • Fig. 2 shows a detail on a larger scale in section according to line II-II 3 and 3 show a section along the line III-III of FIG. 1 (also on a larger scale).
  • 4 shows the fastening of a single roller to a longitudinal beam in a representation analogous to FIG. 2:
  • FIGS. 1 to 4 are systems with a straight mold, not shown, below which, after a short, vertically directed guide section, a strand bending device 1 is arranged, which bends the cast strand 2 into an arc. Subsequent to the bending device 1, a strand circular arc guide 3 is provided, in which the strand 2 is guided from an almost vertical direction to an almost horizontal direction.
  • the bending device 1 is suspended from a stationary scaffold, not shown. It has two frame parts 4, 5 lying opposite one another. On the frame part 4 arranged on the outside of the arch are the roller conveyor 6 forming the outside of the arch Bending or support rollers 7 attached.
  • guide bolts 8 are arranged on each side of the ends of the rollers 7, on which the inner frame part 5, which carries the bending or support rollers 10 forming the inner roller conveyor, is slidably guided.
  • the last end roll (on the outlet side) is designated by 10.
  • the ends of the rollers 7, 10 are provided with tension bolts 11, each of which is attached with its head 12 to the inner scaffold part 5 and with its other end 13 with interposed inserts 14 on the outer scaffold part 4 are supported and fixed by means of a cap nut 15.
  • the distance of the inner frame part 5 from the outer frame part 4 and thus the distance of the roller track 9 on the inside of the bow from the roller track 6 on the outside of the bow can be changed by rearranging the inserts 14.
  • the bending or supporting rollers 10 of the roller track 9 on the inside of the arc are fastened to longitudinal members 16, 16 ′ which extend in one piece over the length of the bending device 1 and are rigidly fastened to the bending device.
  • the rollers 10 are constructed in several parts, the rollers being formed from roller bodies 17 which are each rotatably mounted on an axis 18.
  • the axles 18 are supported on the longitudinal members 16, 16 'by means of roller brackets 21, 21' provided at each division point 19 and at their ends 20.
  • the roller brackets 21, 21 ' have smooth support surfaces 22 which rest on likewise smooth counter-support surfaces 23 provided on the longitudinal beams 16, 16'.
  • the counter support surfaces 23 are located at an equidistant distance 24 of those formed by the rollers 10 Roller conveyor.
  • the support surfaces 22 of the roller holders 21, 21 'each have a recess 25 through which the support surfaces of each roller holder are divided into two, so that the support surfaces 22 are provided only on the parts of the roller holders 21, 21' at the ends in the longitudinal direction 26 of the cast strand 2.
  • the roller supports 21, 21 ' are properly supported on the longitudinal beams 16, 16'.
  • the roller brackets 21 ' provided at the ends 20 of the rollers and the fastening bolts 27 which pass through the roller axles 18 and which are designed as screw bolts and project between the divided longitudinal members 16' provided on the roller ends 20 are used for fastening the roller axles 18.
  • the nuts 28 of the bolts 27 are supported via wedge-shaped inserts 29 on supporting surfaces 30 of the longitudinal members 16 ', which supporting surfaces 30 are formed by slots 31 which are worked into the longitudinal members 16' and extend approximately in the longitudinal direction 26 of the longitudinal members 16 '.
  • These support surfaces 30 of the slots 31 each enclose with the tangent surface 32 on the part of the roller conveyor 9 formed by the roller 10 attached there an angle 34 widening in the direction of strand extraction 33. This angle 34 is smaller than the angle of friction of the friction prevailing between the longitudinal member 16 'and the roller holder 21'. As a result, a displacement of the rollers 10 in the strand pulling-out direction 33 and in the opposite direction will certainly occur.
  • the strand-circular arc guide 3 adjoining the bending device has longitudinal members 37 for supporting the outside of the arc, roller conveyor 36 formed from supporting rollers 35, those with longitudinal members 38 arranged on the inside of the arc, which support rollers 39 of the rollers on the inside of the arc wear web 40, are connected by means of tie rods, not shown.
  • the first (on the inlet side) end roller of the circular arc guide 3 is designated 39 '.
  • the longitudinal beams 38 arranged on the inside of the arc are arranged laterally, ie offset in the direction of the roller axes 18, in relation to the longitudinal beams 16, 16 ′ of the bending device arranged on the inside of the curve. They overlap one another in the position shown in full lines in FIGS. 1 and 2 and set to the greatest strand thickness.
  • the upper end roller 39 'of the circular arc guide 3 passes through Moving parallel and changing the curvature (by elastic bending) of the longitudinal members 38 of the circular arc guide into the position shown in broken lines in FIG. 2;
  • the longitudinal members 16, 16 'of the bending device arranged on the inside of the bend move from the largest roller track distance 41 to the smallest roller track distance 42 into the position also shown in dash-dotted lines in FIG the bending device 1 the end roller 10 '. of the bending device to the end roller 39 'of the circular arc guide 3 would have too great a distance 43.
  • the strand shell 44 which is only very thin at this point, would bulge inadmissibly between these rollers.
  • the function of the system according to the invention is as follows: when the position of the rolls 10, 10 'of the bending device shown in full lines in FIG. 1 is reduced to a smaller strand thickness, the rolls become 10, 10 'of the inside roller conveyor 9 offset in the longitudinal direction 26 of this roller conveyor 9 or the strand and fixed in the new position. This displacement is done in each case by loosening the nut 28 of the bolts 27, moving the roller holders 21, 21 'with their support surfaces 22 along the counter-support surfaces 23 on the side members 16, 16' and then tightening the nut 28 of the bolts 27. This measure will Excessive distance 43 between the end rollers 10 'and 39' evenly divided between all the rollers 10, 10 'of the bending device 1 lying on the inside of the arc. The rollers 7, 35 of the bending device 1 and the circular arc guide 3 arranged on the outside of the arc remain unchanged in their position.
  • the . Roller brackets 45 are freely cantilevered in the pull-out direction 33 of the strand 2 via the support surfaces 46.
  • the support surface 46 only extends over one half of the roller holder.
  • The. the screw bracket 27 fixing the roller holder is no longer in the center of the roller axis 18, but is offset from it by the distance 47 against the strand pulling direction 33. 4 shows the greatest force 48 to be expected which acts from the cast strand 2 on the roller 10 and which has the largest component 49 in the strand pull-out direction 33. This force 48 deviates considerably from the radial direction 50 directed towards the center of curvature if the bearings of the rollers have an increased rotational resistance.
  • the center line 51 of the screw bolt 27 is positioned such that its intersection 52 with the force 48 acting on the roller 10 from the cast strand 2 is the greatest inclination against the radial direction 50 at this point, or which has the largest component 49 in the strand pull-out direction 33, lies within a friction wedge 54, shown hatched on the tilt line 53 of the roller holder.
  • the opening angle 55 of the friction wedge 54 ie the angle between the radial direction 50 directed towards the center of curvature and the straight line 56 representing the friction wedge surface, corresponds to the arctan of the friction coefficient corresponding to the friction prevailing between the support surface 46 and the counter support surface 23.
  • This arrangement of the slot has the advantage that the distance 59 between the support surface 57 of the slot 58 and the counter support surface 23 remains the same over the length of the slot 58, so that the nut 28 of the fastening bolt 27 only has to be loosened or tightened to a small extent when the roll is moved.
  • the longitudinal member 38 of the circular arc guide 3 arranged on the inside of the arc has been displaced in a direction which is inclined at 45 ° to the horizontal by approximately the same size as the deviation of its roller track 40 in the longitudinal direction 26 of the roller track at both ends of the circular arc guide to keep.
  • the longitudinal members 38 of the circular arc guide 3 can now be displaced such that the distance between the last (outlet-side) roller of the circular arc guide and the end (inlet-side) roller of the guide frame following the circular arc guide remains approximately the same, since even a very large change in position of the inlet-side end roller 39 ' the circular arc can be easily compensated.
  • roller tracks 6, 36 on the outside of the arc are arranged rigidly, i.e. they are not adjusted when setting a roll gap corresponding to the strand thickness.
  • the roller tracks 9, 40 on the inside of the arc could also be immovable and the roller tracks 6, 36 on the outside of the arc could be adjustable to a desired strand thickness.
EP81890090A 1980-05-29 1981-05-26 Bow type continuous casting plant Withdrawn EP0041498A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0285080A AT367327B (de) 1980-05-29 1980-05-29 Bogenstranggiessanlage
AT2850/80 1980-05-29

Publications (2)

Publication Number Publication Date
EP0041498A2 true EP0041498A2 (fr) 1981-12-09
EP0041498A3 EP0041498A3 (en) 1982-01-13

Family

ID=3541287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81890090A Withdrawn EP0041498A3 (en) 1980-05-29 1981-05-26 Bow type continuous casting plant

Country Status (4)

Country Link
EP (1) EP0041498A3 (fr)
JP (1) JPS5719145A (fr)
AT (1) AT367327B (fr)
ES (1) ES8300537A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917922A1 (fr) * 1997-11-21 1999-05-26 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation de coulée en continu de brames
DE19951262C1 (de) * 1999-10-25 2001-04-05 Sms Demag Ag Strangführungsgerüst einer Stranggießanlage, insbesondere für Dünnbrammen aus Stahl
AT509351B1 (de) * 2010-01-22 2013-11-15 Siemens Vai Metals Tech Gmbh Strangführungselement zum führen und stützen eines metallischen strangs in einer stranggiessmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110168022B (zh) 2017-01-13 2021-09-07 大日精化工业株式会社 黑色异吲哚啉酮颜料和着色剂

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT234932B (de) * 1962-06-29 1964-07-27 Demag Ag Stützwalzengerüst zur Führung eines gebogenen Gießstranges in einer Stahl- oder Metallstranggießanlage
US3923093A (en) * 1974-05-16 1975-12-02 Armco Steel Corp Universal continuous casting apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT234932B (de) * 1962-06-29 1964-07-27 Demag Ag Stützwalzengerüst zur Führung eines gebogenen Gießstranges in einer Stahl- oder Metallstranggießanlage
US3923093A (en) * 1974-05-16 1975-12-02 Armco Steel Corp Universal continuous casting apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917922A1 (fr) * 1997-11-21 1999-05-26 Sms Schloemann-Siemag Aktiengesellschaft Procédé et installation de coulée en continu de brames
US6308769B1 (en) 1997-11-21 2001-10-30 Sms Schloemann-Siemag Aktiengesellschaft Continuous casting plant for casting slabs with a continuous casting mold and a strand guiding unit composed of rollers
DE19951262C1 (de) * 1999-10-25 2001-04-05 Sms Demag Ag Strangführungsgerüst einer Stranggießanlage, insbesondere für Dünnbrammen aus Stahl
AT509351B1 (de) * 2010-01-22 2013-11-15 Siemens Vai Metals Tech Gmbh Strangführungselement zum führen und stützen eines metallischen strangs in einer stranggiessmaschine

Also Published As

Publication number Publication date
ATA285080A (de) 1981-11-15
ES502583A0 (es) 1982-04-01
ES8300537A1 (es) 1982-04-01
JPS5719145A (en) 1982-02-01
AT367327B (de) 1982-06-25
EP0041498A3 (en) 1982-01-13

Similar Documents

Publication Publication Date Title
DE2612094A1 (de) Strangfuehrung an einer stranggiessanlage
EP2288458A1 (fr) Segment de guide-barre
DE2644096C2 (de) Stütz- und Führungsbogen für Gußstränge, insbesondere für Brammengußstränge
DE2620888A1 (de) Strangfuehrung an einer stranggiessanlage zum stuetzen, fuehren und ausziehen eines gusstranges bzw. eines anfahrstranges
EP0041498A2 (fr) Installation de coulée continue en courbe
DE2646388A1 (de) Strangfuehrung an einer stranggiessanlage
DE2522070A1 (de) Walzgutfuehrung fuer ein walzgeruest
DE2908010A1 (de) Hubtischfuehrung einer stranggiessanlage
EP0222732B1 (fr) Guide de barre
DE3805475A1 (de) Vorrichtung zur walzgutfuehrung zwischen den walzen eines walzgeruestes
AT406232B (de) Präzisionswalzgerüst
EP0027105B1 (fr) Installation de coulée continue courbe
DE2649280A1 (de) Stuetz- und fuehrungsbogen fuer gussstraenge
CH639574A5 (de) Fuehrungsgeruest fuer stranggiessanlagen.
DE2618747A1 (de) Verfahren zum austauschen von stuetz- oder treibrollen in einer stranggiessanlage und einrichtung zur durchfuehrung des verfahrens
EP0064238B1 (fr) Procédé et dispositif pour fléchir un boudin dans une installation de coulée continue d'acier
DE2656773C2 (de) Vorrichtung zum Verändern des Abstandes zweier einander gegenüberliegender Stütz- bzw. Führungsrollen einer Stranggießanlage
DE2739734C2 (de) Stütz- und Führungseinrichtung für gegossene Stränge
EP0064490B1 (fr) Dispositif pour aligner deux unités de guidage voisines dans la direction de coulée, dans une installation de coulée continue
EP0470429B1 (fr) Dispositif pour régler et ajuster des poulies motrices logées dans des longerons pour le transport de tôles
DE3939016A1 (de) Vorrichtung zum formen eines flansches oder dergleichen, insbesondere am ende eines duennwandigen metallrohres
DE3228553A1 (de) Stranggiessanlage
DE102013224557A1 (de) Stranggießanlage und Verfahren zum Stranggießen eines Metallstranges
EP0054605A2 (fr) Machine à dresser à six rouleaux à dresser, ou davantage, disposés obliquement
EP3536413A1 (fr) Cage de laminoir pour un laminoir à chaud

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LU NL SE

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19821223

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DIE ERFINDER HABEN AUF IHRE NENNUNG VERZICHTET.