US3794107A - Plural segmented guiding assembly for a continuous casting - Google Patents

Plural segmented guiding assembly for a continuous casting Download PDF

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Publication number
US3794107A
US3794107A US00272065A US3794107DA US3794107A US 3794107 A US3794107 A US 3794107A US 00272065 A US00272065 A US 00272065A US 3794107D A US3794107D A US 3794107DA US 3794107 A US3794107 A US 3794107A
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US
United States
Prior art keywords
apron
bearing
frame
supporting frame
continuous casting
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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.)
Expired - Lifetime
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US00272065A
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English (en)
Inventor
J Eisen
G Bollig
H Grothe
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Schloemann AG
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Schloemann AG
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Publication date
Application filed by Schloemann AG filed Critical Schloemann AG
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Publication of US3794107A publication Critical patent/US3794107A/en
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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
    • B22D11/12—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
    • 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
    • B22D11/085—Means for storing or introducing the starter bars in the moulds

Definitions

  • ABSTRACT A continuous casting plant consisting of at least one assembly comprising a supporting frame, a mold and a plurality of following guiding segments forming an arcuate apron attached to the frame. The segments are movable out of alignment with the apron in a direction away from the frame.
  • the frame is disposed on the inside of the arcuate path formed by the apron and supported by the foundation structure of the plant at two bearing points, the bearing at the upper end of the frame being the main bearing located in line with a vertical through the center of gravity of said assembly, and the other hearing at the lower end of the frame being a loose bearing affording freedom of movement in a direction parallel to the longitudinal axis of the path formed by the apron.
  • equipment for the reception of a dummy bar and introducible into an opening formed upon displacement of at least one segment at the outside of the apron comprises a deflectably mounted casing containing a telescopically extendable magazine for the dummy bar.
  • the present invention relates to a continuous casting plant consisting of at least one assembly comprising a supporting frame, a mold and a plurality of following guide segments forming an arcuate apron attached to the frame, said segments being movable out of alignment with the apron in a direction away from the frame, as well as of a straightening and withdrawing machine and equipment for the reception of a dummy bar.
  • the arcuate apron following the mold is subdivided into segments.
  • a supporting frame is provided to which these segments of the apron are attached.
  • the segments of the apron are exchanged with the help of a segment changing carriage which runs on rails extending parallel to the apron.
  • the several segments of the apron can be transferred to this carriage and carried thereon to a point where they can be removed from the plant and repaired or readjusted as may be required.
  • the necessary drive means must also be located on one side of the apron.
  • the dummy bar in a plant of the described kind is advanced up the apron from the bottom end thereof.
  • the supporting frame is attached at several points to the main structure of the plant, the mold and the first cooling zone being mounted on the structure as separate entities.
  • Plants of the above described type exhibit certain drawbacks. Owing to the presence of the supporting frame on the outside of the arc of the apron it is impossible to withdraw the segments of the apron in the outward direction. However, their withdrawal sideways from the apron also presents difficulties and involves the provision of considerable structural means because for changing the casting cross section the setting or adjusting cylinders on each side of the casting and their guide means also must be withdrawn together with the segments. The setting cylinders can be thus-withdrawn only after the hydraulic couplings have first been disconnected, a necessity which involves a considerable amount of extra work. Moreover, since the frame is supported at several points, and the mold and the first cooling zone are independently mounted, the actual path taken by the casting during operation tends to considerably deviate from the desired path.
  • the apron comprises drive rollers, and if the plant is a multi-strand installation, then a considerable amount of space is needed between the aprons since either the segment changing devices or the drive means for the drive rollers must be accommodated in this space and, besides, these parts must be protected by expensive arrangements from the external effects of the cooling system.
  • Another and more specific object of the invention aims at securing the segments of the apron and the mold to the structure of the plant by the supporting frame in such a way that the precisely aligned path provided by the apron for the casting cannot be displaced by external effects during operation.
  • Another object contemplates introducing the dummy bar from the outside of the arc of the apron with a minimum waste of working time.
  • This arrangement permits the individual segments of the apron to be replaced from that side of the apron where there is most space, i.e., from the outside of the arcuate apron.
  • the location of the frame on the inside of the are also enables the spacing between neighboring aprons in multi-strand installations to be minimised and floor space as well as structural bulk to be saved. Since a frame located in an arc type plant on the inside of an apron having a radius of about 10 meters will have a radius that is about 2.5 meters shorter than a frame on the outside of the apron, the overall length of an inside frame will also be about 25 percent less than that of an outside frame, a circumstance which also contributes towards reducing the structural bulk and complications of the plant.
  • the proposed method of supporting the frame permits a negative effect on the desired path of the casting due to thermal expansion and weight load to be eliminated.
  • the bearing at the upper end of the frame which is the principal bearing, is arranged to be located in line with a vertical through the center of gravity of the assembly comprising the mold, the following apron and the frame. This relieves that part of the structure which is called upon to support the upper bearing, of uncontrolled torsional stresses, and the bearing will be loaded exclusively in compression.
  • the slight turning moment which arises when the upper bearing is a little offset from the vertical through the center of gravity can be readily absorbed by the second bearing at the bottom end of the frame.
  • This bearing is preferably designed to be a loose bearing providing freedom of movement in a direction parallel to the periphery of the arcuate path of the casting. Consequently, the apron can expand from the main bearing freely towards either side in the direction of the casting path.
  • Another advantage afforded by the invention arises because the guiding columns and setting or adjusting cylinders which are associated with each segment are attached to the frame. Owing to this arrangement the guiding columns and the setting cylinders can remain in position when a segment is replaced. This leads to a considerable saving in time because the flexible pipe connections to the cylinders need not be undone and reconnected. The attachment of the cylinders and guiding columns to the frame on the inside of the arc also places these components in a more protected position in the event of a break-out of metal.
  • Another feature of the invention consists in so designing the guiding columns and setting cylinders that they are able to transfer the associated segment to a segment changing means provided on the outside of the arc of the apron without requiring the provision of additional aids. This in turn enables the design of the changing equipment to be simplified.
  • the equipment for the reception of a dummy bar may consist of a deflectably mounted casing and a telescopically extendable magazine.
  • the dummy bar is movable in the magazine with the aid of a driven member, such as a sprocket or friction wheel and the magazine can be raised by a counterweight and lowered again by the descending dummy bar.
  • a driven member such as a sprocket or friction wheel
  • alternative drives would be feasible such as the provision of hydraulic drive means for the dummy bar.
  • the proposed form of construction enables the dummy bar to be fed into position before the end of the previous casting has completely left the apron. Moreover, much less time is required for the withdrawing head of the dummy bar to reach the mold because the dummy bar need ascend only part of the apron.
  • a single segment changer and a single arrangement for the reception of the dummy bar may be arranged to serve all the aprons.
  • these accessory devices must also be capable of being traversed across the several aprons.
  • the arched supporting frame 1 in the illustrated continuous casting plant or machine has a bearing face 2 at its upper end resting on a girder 3.
  • the bearing face 2 is intended to be located so that it is intersected by a vertical line through the center of gravity of an assembly comprising the frame 1, a mold 7 and segments 19, 20, 35 of an apron guiding the casting.
  • a suitable straightening and withdrawing machine is indicated by reference character 60.
  • the bottom end of the frame 1 is additionally suspended from another girder 6 by a bearing 5 which permits the frame to move freely parallel to the periphery of the arc formed by the casting, in other words in the direction of the longitudinal axis of the path 52 of the casting down the apron.
  • the casting mold 7 is suspended in a cradle having side plates 8 held by arms 9 and oscillating levers 10 attached by hinges 50 and 51 respectively to the frame 1.
  • the other arm of each oscillating lever 10 is linked to the piston rod 11 of an oscillating cylinder 12.
  • a bracket 14 on the frame 1 between the side plates 8 is a first guiding and cooling zone 13. At its upper end this first guiding zone or segment 13 comprises lateral rollers 15 which are held between guide rails 16 on the inside of the side plates 8.
  • the bearing 2 will substantially be loaded exclusively in compression.
  • the frame 1 deviates from its original position and shape, as may occur by reason of thermal expansion and the effect of the weight of the casting, the frame will be able to move accordingly. Any such movement is not restricted in the upward direction because the mold 7, the oscillating equipment 9, 10, ll, 12, the first segment 13 and the other segments 19, 20 of the apron are mounted on the supporting frame 1 and therefore participate in any such movement, no deviations from the desired path 52 of the casting occurring between the several components.
  • the bottom bearing 5 of the frame 1 is so designed that it can move parallel to the path 52, without changing the position of the apron in relation to the following parts of the plant, insofar as the path 52 of the casting is concerned.
  • the bearing 5 prevents any turning movement about the upper bearing 2 that might otherwise occur.
  • the upper bearing here constituted by the bearing face 2, could naturally be replaced by a bearing pin having a horizontal axis.
  • brackets 17 are attached to both sides of the frame 1. These brackets contain guiding columns 18. Slidably mounted on each pair of guiding columns 18 are an inner part 19 and an outer part 20 of a segment, each part containing rollers 21. The columns 18 also carry a removable stop 22 which locates the outer part 20.
  • the brackets 17 also carry holders 23 for pressurefluid-operated cylinders 24 having piston rods 25 bearing against the inner segment 19. For diamantling the inner and outer segment parts 19, 20 these are provided with fittings or holders 26 for attachment thereto of an anchoring member not shown in the drawing.
  • both segment parts 19 can be transferred by the cylinders 24 to a segment changing carriage 27; the piston rods 25 are then detached from the inner segment parts 19. Since the cylinders 24 and the guiding column 18 are secured to the supporting frame 1, they remain in position when a segment is replaced. Consequently the changing carriage 27 need take over only the segments 19, 20 proper, and it can be of much lighter construction than would otherwise be the case. Moreover, the pipes or conduits for taking the pressure fluid to and from the cylinders 24 need not be uncoupled.
  • the bracket 17 is equipped with two lateral bearing blocks or lugs 28, 29 to which pressure-fluid-operated cylinders 30 and 31 are attached having piston rods 32 and 33 respectively connected to an outer segment part 35 which is slidable on extended columns 34.
  • the equipment for the reception of a dummy bar 36 may consist of a receiving casing 37 having an open top and at least one partially open side and adapted to be deflected about a hinge 39 by a pressure-fluid-operated cylinder 38 attached to the foundation.
  • a magazine 40 Slidably contained inside the casing 37 is a magazine 40, likewise having one open side, and adapted to be telescopically extended and retracted.
  • the dummy bar 36 is contained inside the magazine 40 and can be raised and lowered by a suitable drive, such as chain wheel or friction wheel 42 driven by a motor 41 and which directly acts upon the dummy bar.
  • the magazine 40 is raised by the action of a rope 44 running over a deflecting sheave 43 and carrying a counterweight 45, and thus guides the dummy bar 36 to the open roller apron.
  • the withdrawing head 46 attached thereto strikes guide rollers 47 inside the magazine 40 and thus draws the magazine 40 back into its casing 37 against the pull of the counterweight 45.
  • the open segment is reclosed by the hydraulic cylinders 30, 31.
  • a continuous casting plant composed of at least one assembly comprising a supporting frame, a mold and a plurality of following guiding segments forming an arcuate apron for guiding the casting along an arcuate path of travel and attached to said supporting frame, means for moving said segments out of alignment with the apron in a direction away from said supporting frame, said supporting frame being disposed on the inside of said arcuate path of travel formed by the apron and supported by the foundation structure of the plant at two bearing points, one of said bearing points defining a bearing at an upper end region of said supporting frame and constituting a main bearing which is located approximately in line with a vertical through the center of gravity of said assembly, the other bearing point defining a bearing at a lower end region of the frame and constituting a loose bearing affording freedom of movement in a direction parallel to the longitudinal axis of said path of travel formed by the apron.
  • said means for moving said segments of the apron comprises guiding columns and setting cylinders, said guiding columns and setting cylinders being attached to said supporting frame.
  • a continuous casting plant composed of at least one assembly comprising a supporting frame, a mold and a plurality of following segments forming an arcuate apron for guiding the casting along an arcuate path of travel and attached to said supporting frame, said supporting frame being disposed on the inside of said arcuate path of travel formed by the apron, a pair of bearing means for supporting said supporting frame at two bearing points, one of said bearing means defining a bearing at an upper end region of said supporting frame and constituting a main bearing located approximately in line with a vertical through the center of gravity of said assembly, the other bearing means defining a bearing at a lower end region of the frame and constituting a loose bearing means for affording freedom of movement in a direction substantially parallel to the longitudinal axis of said path of travel formed by the

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US00272065A 1971-07-17 1972-07-14 Plural segmented guiding assembly for a continuous casting Expired - Lifetime US3794107A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2135860A DE2135860C3 (de) 1971-07-17 1971-07-17 StranggieBanlage mit bogenförmiger Strangführung

Publications (1)

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US3794107A true US3794107A (en) 1974-02-26

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ID=5814026

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US00272065A Expired - Lifetime US3794107A (en) 1971-07-17 1972-07-14 Plural segmented guiding assembly for a continuous casting

Country Status (10)

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US (1) US3794107A (de)
JP (1) JPS5223324B1 (de)
AT (1) AT319502B (de)
BE (1) BE786353A (de)
CA (1) CA975925A (de)
DE (1) DE2135860C3 (de)
FR (2) FR2146320B1 (de)
GB (1) GB1392472A (de)
IT (1) IT962496B (de)
SE (1) SE372444B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920065A (en) * 1973-08-27 1975-11-18 United States Steel Corp Curved roll rack
US3994334A (en) * 1974-05-28 1976-11-30 Mannesmann Aktiengesellschaft Supporting casting in a continuous casting machine by means of exchangeable segments as holders for support rolls
US4022268A (en) * 1974-07-25 1977-05-10 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Continuous casting plant
US4033558A (en) * 1975-10-10 1977-07-05 Concast Ag Apparatus for cutting a steel strand located in a supporting guide arrangement of a continuous casting installation
US4131154A (en) * 1976-07-16 1978-12-26 Concast Ag Roller apron for a continuous casting installation for steel
EP0016748A1 (de) * 1979-03-07 1980-10-01 VOEST-ALPINE Aktiengesellschaft Stütz- und Führungsgerüst für eine Bogenstranggiessanlage
US4298052A (en) * 1978-10-27 1981-11-03 Concast Ag Continuous casting installation containing open-ended mold
US4485837A (en) * 1981-09-17 1984-12-04 Voest-Alpine Aktiengesellschaft Supporting and guiding arc for a cast strand
US4799535A (en) * 1987-04-09 1989-01-24 Herbert Lemper Modular continuous slab casters and the like
US4953614A (en) * 1987-04-09 1990-09-04 Herbert Lemper Modular continuous caster

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT344347B (de) * 1975-05-13 1978-07-10 Voest Ag Einrichtung zum einbringen eines anfahrstranges in die strangfuehrung einer stranggiessanlage
AT359227B (de) * 1979-03-08 1980-10-27 Voest Alpine Ag Stuetz- und fuehrungsgeruest fuer eine bogen- stranggiessanlage
IT1187563B (it) * 1985-05-10 1987-12-23 Danieli Off Mecc Protettore testa falsa barra per colata continua e falsa barra per colata continua adottante tale protettore

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257691A (en) * 1963-02-25 1966-06-28 United States Steel Corp Apparatus for deflecting and guiding a descending slab
US3338297A (en) * 1964-03-06 1967-08-29 United States Steel Corp Apparatus for bending a casting having a liquid core
US3730256A (en) * 1969-06-30 1973-05-01 Koppers Co Inc Apparatus for bending continuous cast slabs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU458380A1 (ru) * 1967-03-06 1975-01-30 Уральский завод тяжелого машиностроения им.Серго Орджоникидзе Устройство дл выт гивани слитка из кристаллизатора
DE2061436B2 (de) * 1970-12-14 1977-12-15 Schloemann-Siemag AG, 4000 Düsseldorf Stranggiessanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257691A (en) * 1963-02-25 1966-06-28 United States Steel Corp Apparatus for deflecting and guiding a descending slab
US3338297A (en) * 1964-03-06 1967-08-29 United States Steel Corp Apparatus for bending a casting having a liquid core
US3730256A (en) * 1969-06-30 1973-05-01 Koppers Co Inc Apparatus for bending continuous cast slabs

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920065A (en) * 1973-08-27 1975-11-18 United States Steel Corp Curved roll rack
US3994334A (en) * 1974-05-28 1976-11-30 Mannesmann Aktiengesellschaft Supporting casting in a continuous casting machine by means of exchangeable segments as holders for support rolls
US4022268A (en) * 1974-07-25 1977-05-10 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Continuous casting plant
US4033558A (en) * 1975-10-10 1977-07-05 Concast Ag Apparatus for cutting a steel strand located in a supporting guide arrangement of a continuous casting installation
US4131154A (en) * 1976-07-16 1978-12-26 Concast Ag Roller apron for a continuous casting installation for steel
US4298052A (en) * 1978-10-27 1981-11-03 Concast Ag Continuous casting installation containing open-ended mold
EP0016748A1 (de) * 1979-03-07 1980-10-01 VOEST-ALPINE Aktiengesellschaft Stütz- und Führungsgerüst für eine Bogenstranggiessanlage
US4358007A (en) * 1979-03-07 1982-11-09 Voest-Alpine Aktiengesellschaft Supporting and guiding stand arrangement to be used in a bow-type continuous casting plant
US4485837A (en) * 1981-09-17 1984-12-04 Voest-Alpine Aktiengesellschaft Supporting and guiding arc for a cast strand
US4799535A (en) * 1987-04-09 1989-01-24 Herbert Lemper Modular continuous slab casters and the like
US4953614A (en) * 1987-04-09 1990-09-04 Herbert Lemper Modular continuous caster

Also Published As

Publication number Publication date
DE2135860A1 (de) 1973-01-25
CA975925A (en) 1975-10-14
SE372444B (de) 1974-12-23
DE2135860C3 (de) 1980-08-21
FR2381580A1 (fr) 1978-09-22
FR2381580B1 (de) 1982-08-13
BE786353A (fr) 1972-11-16
FR2146320B1 (de) 1979-03-02
DE2135860B2 (de) 1979-12-20
FR2146320A1 (de) 1973-03-02
IT962496B (it) 1973-12-20
GB1392472A (en) 1975-04-30
AT319502B (de) 1974-12-27
JPS5223324B1 (de) 1977-06-23

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