US3871441A - Dummy bar for continuous casting - Google Patents

Dummy bar for continuous casting Download PDF

Info

Publication number
US3871441A
US3871441A US344648A US34464873A US3871441A US 3871441 A US3871441 A US 3871441A US 344648 A US344648 A US 344648A US 34464873 A US34464873 A US 34464873A US 3871441 A US3871441 A US 3871441A
Authority
US
United States
Prior art keywords
parts
pivoting
adjacent
adjacent part
dummy bar
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.)
Expired - Lifetime
Application number
US344648A
Other languages
English (en)
Inventor
Joseph Pietryka
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.)
Fives Lille Cail
Original Assignee
Fives Lille Cail
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 Fives Lille Cail filed Critical Fives Lille Cail
Application granted granted Critical
Publication of US3871441A publication Critical patent/US3871441A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars

Definitions

  • a dummy bar for use in a continuous casting operation is comprised of a series of parts which are linked together to pivot about parallel axes. Each joint between adjacent parts includes an end of one of the parts and a pivoting axle mounting the other adjacent part pivotally on the one part.
  • a peg or pin is affixed to either the end of the one part or the pivoting'axle and is received in a closed seat of either the pivoting axle or the end of the one part with sufficient play to permit a limited angular movement between the parts transversely of the pivoting axis.
  • the present invention relates to improvements in dummy or starting bars used in continuous metal casting operations and of the type comprising a series of parts linked together so that the dummy bar may pass readily through a curved path while the dummy bar parts pivot about axes substantially parallel to each other.
  • the liquid metal is poured into the top of a tubular mold which is open at the bottom andthe solidified or partly solidified casting is withdrawn from the bottom of the mold and passed through a curved apron below the mold.
  • the open end of the mold is sealed by a dummy or starting bar which is gripped by withdrawal rolls mounted along the apron to pull the casting out of the mold while it remains attached to the dummy bar.
  • the positioning of the dummy bar is facilitated by limiting the angular movements of the dummy bar links in such a manner that the dummy bar can be curved or articulated only in one direction, beginning from a rectilinear position, with a minimal radius of curvature which is only slightly less than that of the apron.
  • each of the joints including as a first element an end of one of the adjacent parts and as a second element a pivoting axle extending in a respective one of the parallel pivoting axes.
  • the pivoting axle mounts the other adjacent part pivotally on the one adjacent part.
  • a member such as a peg or pin, is affixed to one of the elements and is received in a closed seat in the other element with sufficient play to permit a selected angular movement between the parts transversely to the pivoting axis.
  • FIG. 5 is a sectional view of a modification of the embodiment of FIGS. 1 and 2.
  • the dummy or starting bar used in a continuous casting operation is comprised of a series of jointed links or parts of two alternating types, similar to a link chain, as shown in the partial view of FIG. 1.
  • One type of the links is constituted by bars 10 whose two ends are H-shaped to define respective recesses receiving the ends ofthe other type of links which are constituted by simple rods 12.
  • the rod ends are received in the recesses with a slight play and are pivotally mounted therein by means of respective pivoting axles l6 journaled in the jaws of the H-shaped ends of bar 10 to provide an articulated joint between the bars and the rods.
  • Two successive bars are joined together by two rods, each at one end.
  • each pivoting axle 16 is mounted in the jaws 14, 14 of the H-shaped ends of bar 10 by mounting pins 18.
  • FIG. 2 illustrates the connection between the pivoting axle 16 and the rod 12 which the axle articulately joins to bar 10.
  • the axle carries a peg 20 projecting radially from the circumference of the axle and fixed thereto by screw 22.
  • a groove or keyway 24 extends in a direction parallel to the axle in the wall of bore 26 of rod 12 wherethrough the axle is journaled.
  • the peg 20 projects into keyway 24 but the width of the keyway exceeds that of the peg whereby the play between the peg and keyway permits a limited rotation of rod 12 about axle 16.
  • the relative dimensions between the peg 20 and keyway 24 are so selected that engage ment of the peg with one side wall of the keyway corresponds to the rectilinear form of the dummy bar while the engagement of the peg with the opposite side wall ofthe keyway corresponds to the smallest radius of cur vature to which the jointed dummy bar must be flexed during the operation.
  • the keyway 24 extends the entire length of the bore 26 and its ends may be closed by washers interposed between jaws I4, 14 and rod 12 to form a closed seat for peg 20.
  • the peg 20' is fixed to rod 12' and an axially extending keyway in axle 16' receives the peg with the same type of play as described hereinabove.
  • the peg is provided with a head which may be received in a matching recess in the outer wall of rod 12' so that the peg may be mounted in place from the outside after the parts have been assembled, which permits the keyway in the axle to be shorter than the axle.
  • the peg may again be fixed by screws and like fasteners.
  • the end of rod 12" carries pin 30 which is force-fit into diametrically opposed bores 32 in the rod, bores 32 being aligned with a diameter of bore 26' which receives thepivoting axle 16".
  • the axle has a diametrically extending transverse bore 36 through which pin 30 extends, the axle 16" again being journaletl in the jaws of the end of bar 10' in any suitable manner, for instance as shown in FIG. 1.
  • the transverse bore 36 has a central straight section at the level of the axis of articulation 34, whose diameter is substantially equal to that of pin 30, and flares outwardly towards the ends of the bore to permit an angular movement of the pin in respect of the axle so that the rod 12" may be correspondingly pivoted in respect of bar No foreign bodies can penetrate into bore 36, which forms a closed seat for pin 30, so that the angular movements of the joined dummy bar parts will not be impeded.
  • axle 16 may be integral with rod 12" and the pin 30 may be integral with bar 10.
  • the invention may be used in connection with any dummy bar used in continuous casting operations wherein the bar is constituted by a series of jointed links or parts for use if casting in a curved path.
  • a dummy bar for use in a continuous casting operation and comprised of a series of parts linked together, a joint interconnecting each two adjacent ones of the dummy bar parts for enabling the parts to pivot about an axis, and the pivoting axes of all joints being substantially parallel to each other, each of'the joints including an end of one of the adjacent parts and a pivoting axle fast with the end of the other adjacent part and extending in a respective one of the axes, the pivoting axle passing through a bore in the one adjacent part and mounting the one adjacent part pivotally on the other adjacent part, a peg affixed to the pivoting axle and received in a keyway in the bore extending in an axial direction, the width of the keyway exceeding that of the peg with sufficient play to permit only a selected angular movement between the parts transversely of the pivoting axis, and means for closing the ends of the keyway from the outside.
  • a dummy bar for use in a continuous casting operation and comprised of a series of parts linked together, a joint interconnecting each two adjacent ones of the dummy bar parts for enabling the parts to pivot about an axis, and the pivoting-axes of all joints being substantially parallel to each other, eachof the joints including an end of one of the adjacent parts and a pivoting axle fast with the end of the-other adjacent part and extending in a respective one of the axes.
  • the pivoting axle mounting the one adjacent part pivotally on the other adjacent part, a peg affixed to the one adjacent part and received in a keyway in the pivoting axle, the width of the keyway exceeding that of the peg with sufficient play to permit only a selected angular movement between the parts transversely of the pivoting axis, and the keyway ending short of the ends of the pivoting axle whereby it is closed from the outside.
  • a dummy bar for use in a continuous casting operation and comprised of a series of parts linked together, a joint interconnecting each two adjacent ones of the dummy bar parts for enabling the parts .to pivot about an axis, and the pivoting axes of all joints being substantially parallel to each other, each of the joints including an end of one of the adjacent parts and a pivoting axle fast with the end of the other adjacent part and extending in a respective one of the axes, the pivoting axle mounting the one adjacent part pivotally on the other adjacent part, a pin affixed to the one adjacent part and extending transversely to the pivoting axis through a diametrical bore in the pivoting axle, the transverse bore having a central straight section at the level of the pivoting axis whose diameter is substantially equal to that of the pin, and the transverse bore being closed off from the outside and flaring outwardly towards the ends thereof with sufficient play between the outwardly flaring ends and the pin to permit only a selected angular movement between the parts transverse

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Continuous Casting (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US344648A 1972-03-29 1973-03-26 Dummy bar for continuous casting Expired - Lifetime US3871441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7210950A FR2177534B1 (en, 2012) 1972-03-29 1972-03-29

Publications (1)

Publication Number Publication Date
US3871441A true US3871441A (en) 1975-03-18

Family

ID=9095969

Family Applications (1)

Application Number Title Priority Date Filing Date
US344648A Expired - Lifetime US3871441A (en) 1972-03-29 1973-03-26 Dummy bar for continuous casting

Country Status (14)

Country Link
US (1) US3871441A (en, 2012)
JP (1) JPS498416A (en, 2012)
AT (1) AT328117B (en, 2012)
BE (1) BE797524A (en, 2012)
BR (1) BR7302236D0 (en, 2012)
CA (1) CA985200A (en, 2012)
DE (1) DE2315811B2 (en, 2012)
ES (1) ES413033A1 (en, 2012)
FR (1) FR2177534B1 (en, 2012)
GB (1) GB1426250A (en, 2012)
IT (1) IT981503B (en, 2012)
LU (1) LU67303A1 (en, 2012)
SU (1) SU555834A3 (en, 2012)
ZA (1) ZA731994B (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135042A (en) * 1990-11-23 1992-08-04 Gunther Behrends Self-supporting, flexible continuous casting starter bar
CN111283152A (zh) * 2020-03-26 2020-06-16 中国重型机械研究院股份公司 一种引锭杆过渡链节快拆结构及快拆方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT358211B (de) * 1977-12-14 1980-08-25 Voest Alpine Ag Anfahrstrang fuer stranggiessanlagen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080625A (en) * 1958-02-21 1963-03-12 British Iron Steel Research Continuous casting apparatus
US3324934A (en) * 1963-09-02 1967-06-13 Schloemann Ag Dummy bar with a separable dummy bar head
US3543833A (en) * 1967-04-17 1970-12-01 Luigi Danieli Flexible starting bar for continuous casting plants
US3581808A (en) * 1968-12-26 1971-06-01 Gamma Engineering Ltd Starting device for continuous casting machine
US3627017A (en) * 1968-04-29 1971-12-14 Concast Ag Dummy bar head for continuous casting and method of using same
US3656538A (en) * 1970-12-30 1972-04-18 United States Steel Corp Flexible starter bar

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080625A (en) * 1958-02-21 1963-03-12 British Iron Steel Research Continuous casting apparatus
US3324934A (en) * 1963-09-02 1967-06-13 Schloemann Ag Dummy bar with a separable dummy bar head
US3543833A (en) * 1967-04-17 1970-12-01 Luigi Danieli Flexible starting bar for continuous casting plants
US3627017A (en) * 1968-04-29 1971-12-14 Concast Ag Dummy bar head for continuous casting and method of using same
US3581808A (en) * 1968-12-26 1971-06-01 Gamma Engineering Ltd Starting device for continuous casting machine
US3656538A (en) * 1970-12-30 1972-04-18 United States Steel Corp Flexible starter bar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135042A (en) * 1990-11-23 1992-08-04 Gunther Behrends Self-supporting, flexible continuous casting starter bar
CN111283152A (zh) * 2020-03-26 2020-06-16 中国重型机械研究院股份公司 一种引锭杆过渡链节快拆结构及快拆方法

Also Published As

Publication number Publication date
SU555834A3 (ru) 1977-04-25
GB1426250A (en) 1976-02-25
FR2177534A1 (en, 2012) 1973-11-09
ATA270473A (de) 1975-05-15
ES413033A1 (es) 1976-01-16
BE797524A (fr) 1973-07-16
JPS498416A (en, 2012) 1974-01-25
CA985200A (en) 1976-03-09
FR2177534B1 (en, 2012) 1974-12-13
DE2315811B2 (de) 1975-08-14
LU67303A1 (en, 2012) 1973-06-08
AT328117B (de) 1976-03-10
IT981503B (it) 1974-10-10
BR7302236D0 (pt) 1974-06-27
DE2315811A1 (de) 1973-10-11
ZA731994B (en) 1973-12-19

Similar Documents

Publication Publication Date Title
US3871441A (en) Dummy bar for continuous casting
US2673102A (en) Toggle type pipe coupling
KR980008095A (ko) 절첩 아암식 팔지 걸쇠용의 길이조정장치
KR100210887B1 (ko) 가방 및 유사한 수화물의 손잡이를 위한 관절 이동 수단
US4238028A (en) Flight conveyor
US3673794A (en) Industrial chain and method of manufacturing same
US2091836A (en) Chain
EP0516969A1 (de) Fördermittel
GB2033956A (en) Hinge
DE69302647D1 (de) Uhrarmband
ES2025831T3 (es) Bisagra de doble articulacion para el acoplamiento de un porton a una pared fija de la caja de carga de un vehiculo industrial.
US4062088A (en) Shears coupling
US3797229A (en) Connector hook
CS245761B2 (en) Dismantling knuckle joint for deep excavation
US2529858A (en) Hoist chain equipment
US1069536A (en) Chain-link.
US3021718A (en) Chains for use in conveyor systems
DE8113417U1 (de) Abnehmbare und klappbare kupplungseinrichtung zum anheben von schiebkarren
SU422580A1 (ru) Механизм шарнира манипуляторав п тб
US86981A (en) Improved device for opening and closing- double doors
US937351A (en) Telescope or field glass.
US2616241A (en) Device for connecting and disconnecting chain links
US54411A (en) Improved elastic chain
US3527048A (en) Articulated bracelets,watch straps or the like and a method of making same
US406938A (en) mcdonald