US3717198A - Adjustable dummy bar head for continuous casting - Google Patents

Adjustable dummy bar head for continuous casting Download PDF

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Publication number
US3717198A
US3717198A US00109316A US3717198DA US3717198A US 3717198 A US3717198 A US 3717198A US 00109316 A US00109316 A US 00109316A US 3717198D A US3717198D A US 3717198DA US 3717198 A US3717198 A US 3717198A
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US
United States
Prior art keywords
dummy bar
coupling member
bar head
groove
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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US00109316A
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English (en)
Inventor
H Marti
J Zeller
F Fiala
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SMS Concast AG
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Concast AG
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Publication date
Application filed by Concast AG filed Critical Concast AG
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Publication of US3717198A publication Critical patent/US3717198A/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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
    • 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

Definitions

  • the p g member includes at least one end member which is adjustable thereon. lll 164/2132; The p g member is provided with an elongated groove of hook shaped profile to receive molten [58] Field of Search ..164/82, 274, 282 metal The end member which is adjustable thereon is also provided with a corresponding hook-shaped [56] References cued profile so that as the end member is adjusted with UNITED STATES PATENTS respect to the coupling member the effective length of the groove is altered correspondingly. 3,602,290 8/1971 Schmidt et al ..l64/274 3,608,619 9/1971 Bollig et al. ..164/82 10 Claims, 10 Drawing Figures lo l n I PATENTEDFEB201975 3,717,198
  • the invention relates to a dummy bar head which is adjustable for the continuous casting of cross-sections of different widths in continuous casting plants, wherein the dummy bar head comprises a coupling member and an intermediate member for linking a coupling member to a dummy bar, the coupling member having an elongated groove of hook-shaped profile of which one side opens against the mold wall and which for starting a continuous casting run is adapted to form a coupling connection with the solidifying casting in withdrawing direction, said connection being releasable by rotary and/or tilting deflection of the dummy bar head out of the longitudinal axis of the casting.
  • a dummy bar attached to a dummy bar head is usually needed.
  • the dummy bar head closes the bottom end of the mold when casting commences and its dimensions depend upon the cross-section of the mold.
  • the dummy bar head is commonly connected to the hot, solidifying casting by pins or bars that are insertable into the head.
  • a dummy bar head already known in the art comprises a coupling member with a recess or groove of hook-shaped profile of which one side bears against the mold wall.
  • the casting which is in course of solidification when the plant is started up forms a coupling connection in withdrawing direction with the coupling member and this coupling connection can be undone by rotary and/or tilting deflection of the dummy bar head out of the longitudinal direction of the casting.
  • the coupling member includes at least one end member that determines the effective length of the groove, forms part of the bottom of the mold, and that is slidable endwise along the groove.
  • Such an end member may be locked in desired position by wedging means which permit continuous variable adjustment within the adjustability range and which provide an easy and simple locking device.
  • the length of the groove may be equal to the width of the mold.
  • exchangeable extension pieces having the hook-shaped profile are provided on at least one end of the coupling member.
  • the coupling member may be divisible into two halves parallel to the longitudinal casting axis with the line of division extending perpendicularly across the profile, and exchangeable spacers having the hookshaped profile may be interposed between the divided halves.
  • the adjustability of such dummy bar heads is considerably simplified if the intermediate member is provided with two guide arms mounted on hinges that extend across the direction of travel of the casting at right angles to the hook-shaped profile.
  • the replacement of the spacers and their central alignment is facilitated if the intermediate member adjoining the coupling member contains space for the accommodation of a set of spacers and these latter are mounted for deflection about a hinge in the intermediate member.
  • the coupling member attached to' the intermediate member may, according to another feature of the invention, be exchangeable.
  • the same intermediate member may be used for castings of all widths if, according to another feature of the invention, the width of the intermediate member equals the minimum width of casting that is to be cast in the plant.
  • FIG. 1 is a section, taken on the line I I in FIG. 2, of a dummy bar head provided with slidable end pieces;
  • FIG. 2 is a side view of one half of the dummy bar head of FIG. 1, looking in the direction of arrow A in FIG. 1;
  • FIG. 3 is a partial end elevation of a dummy bar head provided with extension pieces
  • FIG. 4 is a side view of one half of the dummy bar head in FIG. 3 looking in the direction of arrow B in FIG. 3;
  • FIG. 5 is a side view of another embodiment
  • FIG. 6 is a section taken on the line VI-VI in FIG. 5;
  • FIG. 7 is a side view of the dummy bar head according to FIG. 5 after adjustment
  • FIG. 8 is a side view of another embodiment
  • FIG. 9 is a section taken on the line lX-IX in FIG. 8, and
  • FIG. 10 is a side view of the dummy bar head according to FIG. 8, with insertions interposed.
  • FIGS. 1 and 2 show a dummy bar head 1 for the continuous casting of cross-sections of different widths.
  • the head 1 consists of a coupling member 2 of height 3 and an intermediate member -4 of height 5.
  • the intermediate member 4 links a dummy bar 6 to the coupling member 2.
  • the coupling member 2 includes at least one end member 9 which is movable along a body member 10.
  • Each movable end member 9 may be locked in the desired position by a clamping device comprising a wedging bolt 13 and a sliding stud 14.
  • the body member 10, which is the member coupled to the intermediate member 4 has the groove of hook shaped profile along its entire length and at least one end member 9 is slidable endwise thereon.
  • FIG. 2 indicates in broken outline the range of adjustability 20 of the end member 9 on one side of the coupling member 2.
  • the end member 9 When the end member 9 is adjusted to different casting widths within this adjustability range 20 the end member forms part of the bottom of the mold for sealing the same during starting, and at the same time the effective length 21 of the groove which is available for the cast metal to enter and thus form the coupling connection through which the withdrawing force is transmitted from the dummy bar head to the end of the continuous casting in the mold is increased by a similar amount 22.
  • the percentage of the total width of the casting represented by the length of the coupling groove forming the coupling connection therefore becomes larger the further the end member 9 is displaced to adapt the coupling member to greater casting widths.
  • the length 21 of the groove which forms the coupling connection would be 930 mm and thus constitute 66.5 percent of the width of the casting.
  • the adjustment 20 will be 300 mm.
  • the length 21 of the coupling groove has likewise increased by 300 mm to 1,230 mm, and the percentage of the total width of the casting represented by the length of the hook of cast metal formed in the groove will therefore be 72.3 percent. In other words, it will have increased.
  • the distance 23 between the narrow sides of the head and the hookshaped profile forming the coupling connection remains constant in the case of all cross-sections within the adjustability range 20. The greater withdrawing forces required when the casting is wide are thus distributed over an absolutely and relatively longer hook and no withdrawing forces that give rise to undesirable effects will arise.
  • the width of the intermediate member 4 corresponds to the minimum width of casting produced in the plant and it may be exchangeably fitted with coupling members 2 having different adjustability range.
  • the dummy bar 6 can be used for castings of any widths and thicknesses to be produced in the plant.
  • the coupling member 2 may include an end member 9 on only one side or an end member 9 may be fitted on each side.
  • a form of construction comprising only one end member is advantageous when one of the narrow sides of the dummy bar cooperates with a fixed side of the casting guideway.
  • the end members 9 and the body member 10 are provided with holes 24 into which a mechanical, pneumatic or hydraulic manipulating device is insertable.
  • Such manipulating devices may be fitted with adjustable.
  • FIGS. 3 and 4 show another embodiment of a coupling member which is here generally indicated by the reference numeral 30. It is connected to an intermediate member 31 which is merely symbolized in the drawing.
  • the length of the groove .of hook-shaped profile 32 which forms the coupling connection corresponds to the width of the mold.
  • Exchangeable extension pieces 34 likewise having grooves of profile 32 are secured by bolts 33 to those ends 36 of the coupling member 30 which are normal to the profile 32. However, such extension pieces 34 may be provided on only one side of the coupling member 30.
  • the width of the extension piece 34 is indicated at 35. According to the desired width of the casting an extension piece 34 of appropriate width 35 is used.
  • the coupling member 30 is adjusted to the desired casting width by substitution of the extension pieces 34.
  • the extension piece 34 and its profile 32 simultaneously form the required bottom part of the mold.
  • the clearance gap between the coupling member 30 and the mold wall is preferably sealed with a refractory paste.
  • the coupling member 40 shown in FIGS. 5 and 6 is divisible into two halves substantially mid-way between its ends and the line of division crosses the groove of profile 41 at right angles to the direction of elongation of the profile 41.
  • the divided coupling member 40 is held together by a tiebolt 42.
  • This coupling member 40 has gently inclined sealing edges 43 facing the mold walls since these are easier to seal than when they are steep.
  • the intermediate member 44 has two guide arms 45 mounted on hinges 46.
  • the hinges 46 run across the direction of travel of the casting and at right angles to the profile 41.
  • a joint 47 between the hinges 46 and the coupling member 40 serves to confer the necessary mobility to the dummy bar head.
  • Abutment faces 48 between the guide arms 45 take up the thrusts of the rollers that withdraw and guide the casting and they prevent the set-back flanges 49 of the hinges from being loaded.
  • the coupling member 40 is shown adapted to a wider section casting by the interposition of an exchangeable spacer 60 of a length 61 provided with the coupling groove of profile 41.
  • the spacer is secured by the tiebolt 42.
  • the two guide arms 45 form the desired transition cone from the intermediate member 44 to the coupling member 40.
  • a coupling member 40 which is divided in the middle is attached to an intermediate member 82 by a slideway 81.
  • the portion of the intermediate member 82 directly adjoining the coupling member 40 contains a space 85 sufficient for the accommodation of spacer members 84.
  • the coupling member 40 is shown contracted to its minimum width and all the spacer members 84 in an inoperative position in which they are held and located inside the intermediate member 82 by retaining bars 86.
  • the spacer members 84 are hingeably mounted in the intermediate member 82 to swing about a hinge pin 87. Centering and interposition of the spacer members 84 between the halves of the coupling member 40 is facilitated by this arrangement.
  • FIG. 10 three of the five illustrated spacer members 8.4 have been interposed between the halves of the coupling member 40 and secured by tiebolts 42 for the purpose of widening the dummy bar head.
  • the space required for the interposition of the spacer members 84 is created by pushing the two halves of the coupling member apart along in the slideway, parallel to the profile 41.
  • the retaining bars 86 keep the two inoperative spacer members 84 in place in the intermediate member.
  • slidably movable end members 9 as shown in FIG. 1 may be combined with a dummy bar head according to FIGS. 5 to 10.
  • coupling member may be adjusted to different widths of casting by extension members lacking a coupling profile and having say a solid cross-section.
  • the length of the profile in such an arrangement may then be varied in steps by removable inserts that limit the length of the profile.
  • a dummy bar head for use in continuous casting machines which is adjustable to castings of different widths, comprising a coupling member having an elonated groove of hook-shaped profile extendin engthwise thereof adapted to receive molten meta which solidifies therein, and means mounted on said coupling member for adjusting the effective length thereof and at the same time adjusting the effective length of said groove.
  • a dummy bar according to claim 1 in which said adjusting means comprises at least one end member mounted on said coupling member and having a corresponding hook-shaped profile extending into said groove, said end member being slidable thereon, and means for locking said end member in any desired position of adjustment.
  • a dummy bar head according to claim 1 in which said adjusting means comprises at least one extension piece secured to the end of said coupling member, said extension piece having a groove of corresponding hook-shaped profile aligned with the groove of the coupling member and forming an extension thereof.
  • a dummy bar head in which said coupling member consists of two similar halves, and in which said adjusting means comprises one or more spacers interposed between said halves, each of said spacers having a groove of corresponding hookshaped profile aligned with the groove of the coupling member and forming an extension thereof.
  • a dummy bar head according to claim 5 in which the dummy bar head is connected to the dummy bar by an intermediate member.
  • dummy bar head according to claim 6 in which said adjusting means includes a pair of guide arms pivotally mounted on said intermediate member on hinges extending at right angles to said groove.
  • a dummy bar head according to claim 6 in which said adjusting means includes a plurality of spacer members hinged to said intermediate member.
  • a dummy bar head according to claim 6 in which the width of the intermediate member corresponds to the minimum width of the casting mold.
  • a dummy bar head according to claim 1 in which said adjusting means adjusts the effective length of the coupling member and the effective length of said groove by equal amounts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Continuous Casting (AREA)
  • Outside Dividers And Delivering Mechanisms For Harvesters (AREA)
US00109316A 1970-01-27 1971-01-25 Adjustable dummy bar head for continuous casting Expired - Lifetime US3717198A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH106670A CH504256A (de) 1970-01-27 1970-01-27 Anfahrkopf zum Giessen von Strangquerschnitten unterschiedlicher Breiten in einer Stranggiessanlage

Publications (1)

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US3717198A true US3717198A (en) 1973-02-20

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US00109316A Expired - Lifetime US3717198A (en) 1970-01-27 1971-01-25 Adjustable dummy bar head for continuous casting

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US (1) US3717198A (de)
AT (1) AT311576B (de)
CA (1) CA924076A (de)
CH (1) CH504256A (de)
DE (1) DE2103417C3 (de)
FR (1) FR2077352B1 (de)
GB (1) GB1336248A (de)
ZA (1) ZA71390B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921706A (en) * 1973-10-19 1975-11-25 Voest Ag Starter bar for use in continuous casting plants
US3971429A (en) * 1974-08-27 1976-07-27 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Process of extracting a hot slab from a continuous casting mould and an apparatus therefor
US4086955A (en) * 1975-12-18 1978-05-02 Fives-Cail Babcock Head for a starter bar used in the continuous casting of molten metal
US4332289A (en) * 1979-10-08 1982-06-01 Voest-Alpine Aktiengesellschaft Starter bar head to be used for casting metal in a continuous casting mould of a continuous casting plant
US4381030A (en) * 1980-01-25 1983-04-26 Concast Ag Dummy bar head for a steel continuous casting installation containing an open-ended mold
US20110094704A1 (en) * 2008-04-02 2011-04-28 Stefan Rombs Dummy bar for a continuous casting installation and method of using the same
CN104972082A (zh) * 2015-07-13 2015-10-14 江苏联峰能源装备有限公司 一种段面引锭头浇注连接件
CN108655355A (zh) * 2018-06-20 2018-10-16 山东钢铁股份有限公司 连铸机用直角倒角两用引锭头
WO2024094846A1 (de) * 2022-11-04 2024-05-10 Sms Group Gmbh ABDICHTSYSTEM ZUR VERWENDUNG MIT EINEM KALTSTRANGKOPF EINER STRANGGIEßANLAGE UND VERFAHREN ZUM HERSTELLEN EINES METALLISCHEN PRODUKTS MITTELS STRANGGIEßEN UNTER VERWENDUNG DES ABDICHTSYSTEMS

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149582A (en) * 1977-07-28 1979-04-17 Concast Incorporated Dummy bar head for continuous casting and method of starting a continuously cast strand
IT1188068B (it) * 1985-11-27 1987-12-30 Continua Int Macchina per la colata continua in curva con falsa barra rigida
EP1393418B1 (de) 2001-04-12 2005-06-22 Finisar Corporation Verfahren und vorrichtung zur regelung der mittenwellenlänge eines lasers, insbesondere eines halbleiterlasers
AT501860B1 (de) * 2005-06-08 2007-03-15 Voest Alpine Ind Anlagen Anfahrstrang für eine stranggiessanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1504838A (fr) * 1965-11-16 1967-12-08 Mannesmann Ag Tête de démarrage de billette froide dans les installations de coulée continue
US3602290A (en) * 1968-08-23 1971-08-31 Mclouth Steel Corp Dummy bar for continuous casting
US3608619A (en) * 1969-03-10 1971-09-28 Concast Inc Continuous casting starter bar
US3620285A (en) * 1969-03-21 1971-11-16 Olsson International Slab casting apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1504838A (fr) * 1965-11-16 1967-12-08 Mannesmann Ag Tête de démarrage de billette froide dans les installations de coulée continue
US3602290A (en) * 1968-08-23 1971-08-31 Mclouth Steel Corp Dummy bar for continuous casting
US3608619A (en) * 1969-03-10 1971-09-28 Concast Inc Continuous casting starter bar
US3620285A (en) * 1969-03-21 1971-11-16 Olsson International Slab casting apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921706A (en) * 1973-10-19 1975-11-25 Voest Ag Starter bar for use in continuous casting plants
US3971429A (en) * 1974-08-27 1976-07-27 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Process of extracting a hot slab from a continuous casting mould and an apparatus therefor
US4086955A (en) * 1975-12-18 1978-05-02 Fives-Cail Babcock Head for a starter bar used in the continuous casting of molten metal
US4332289A (en) * 1979-10-08 1982-06-01 Voest-Alpine Aktiengesellschaft Starter bar head to be used for casting metal in a continuous casting mould of a continuous casting plant
US4381030A (en) * 1980-01-25 1983-04-26 Concast Ag Dummy bar head for a steel continuous casting installation containing an open-ended mold
US20110094704A1 (en) * 2008-04-02 2011-04-28 Stefan Rombs Dummy bar for a continuous casting installation and method of using the same
US8167025B2 (en) 2008-04-02 2012-05-01 Sms Siemag Ag Dummy bar for a continuous casting installation and method of using the same
CN104972082A (zh) * 2015-07-13 2015-10-14 江苏联峰能源装备有限公司 一种段面引锭头浇注连接件
CN108655355A (zh) * 2018-06-20 2018-10-16 山东钢铁股份有限公司 连铸机用直角倒角两用引锭头
CN108655355B (zh) * 2018-06-20 2023-11-10 山东钢铁股份有限公司 连铸机用直角倒角两用引锭头
WO2024094846A1 (de) * 2022-11-04 2024-05-10 Sms Group Gmbh ABDICHTSYSTEM ZUR VERWENDUNG MIT EINEM KALTSTRANGKOPF EINER STRANGGIEßANLAGE UND VERFAHREN ZUM HERSTELLEN EINES METALLISCHEN PRODUKTS MITTELS STRANGGIEßEN UNTER VERWENDUNG DES ABDICHTSYSTEMS

Also Published As

Publication number Publication date
CH504256A (de) 1971-03-15
ZA71390B (en) 1971-11-24
FR2077352B1 (de) 1974-09-27
AT311576B (de) 1973-11-26
DE2103417C3 (de) 1974-08-01
DE2103417A1 (de) 1971-08-05
FR2077352A1 (de) 1971-10-22
CA924076A (en) 1973-04-10
DE2103417B2 (de) 1974-01-03
GB1336248A (en) 1973-11-07

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