US3543833A - Flexible starting bar for continuous casting plants - Google Patents

Flexible starting bar for continuous casting plants Download PDF

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Publication number
US3543833A
US3543833A US707388A US3543833DA US3543833A US 3543833 A US3543833 A US 3543833A US 707388 A US707388 A US 707388A US 3543833D A US3543833D A US 3543833DA US 3543833 A US3543833 A US 3543833A
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United States
Prior art keywords
starting bar
bar
continuous casting
casting plants
elements
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Expired - Lifetime
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US707388A
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English (en)
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Luigi Danieli
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Individual
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32541—Rotatable members resiliently biased to one position

Definitions

  • ABSTRACT A false bar for continuous casting plants, [51] InLCl B22d 11/08 characterized by comprising a Series f hollow elements [50] Fleld Search 164/821 equivalent to one another, coaxially arranged one after the 274. 282, 283,412(Consulted): 287/86; other, with a section equal to that of the bar to be cast, each element being bound to the next element by a pin passing through two corresponding portions of the two ends, allowing [56] References cued slight oscillations between the two elements dampened by a UNITED STATES PATENTS resilient device inside of each element and tending to hold said 2,191,348 2/1940 Lauterbach 287/86UX bar at an upright position.
  • the main problems for the starting bar are the following:
  • starting bars made of rubber however, these bars show a short life, they will elongate and particularly will not withstand the specific high pressures to which they are subjected when passing through said dragging rollers;
  • steel chain starting bars they are not sufficiently rigid to withstand buckling, therefore affording deflections also according to planes different from the bending plane for the bar to be cast, thus causing significant irregularities in the bar pull;
  • the present invention is for overcoming the above disadvantages by providing a false billet and a flexible false slab solving all the problems for the starting bar.
  • the invention comprises a series of hollow metal elements which are interconnected by pins.
  • a resilient system formed from a series of leaf spring assembled laminations, bound by a bolt or rivet to a portion of the preceding element and freely movable at its opposite end within a groove formed in the adjacent element, thus allowing the starting bar to straighten upon termination of the stresses holding it in a curved condition.
  • this false bar has a high resiliency in a plane (corresponding to the bending plane for the roller guide) and no flexibility along a plane perpendicular to the former.
  • the same object would be attained if the previously described elements are also formed of hollow elements, but terminating with a tang which is positioned into the bore of the subsequent element when as sembling, the connection between the various elements being always effected by pins.
  • the resilient system is formed to include a tang which, when associated with the adjacently alined element, will encounter pads of rubber or other resilient material provided in the bore of the latter, the tang acting on said pads so as to impart the required flexibility to the starting bar.
  • the resilient element of rubber is replaced by at least a flexure spring, such as a leaf spring system or any other spring, such as a stack of Belleville spring elements, thus obtaining the same results as those for the system of assembled laminations in a leaf spring type element.
  • a flexure spring such as a leaf spring system or any other spring, such as a stack of Belleville spring elements
  • FIG. 1 is a longitudinal cross section of the starting bar in a first embodiment of the invention
  • FIG. 2 is a longitudinal cross section of the starting bar in a second embodiment of the invention.
  • FIG. 3 is a longitudinal cross section of the starting bar in a third embodiment of the invention.
  • FIG. 4 is a section on line 4-4 of FIG. 1;
  • FIG. 5 is a section on line 5-5 of FIG. 2;
  • FIG. 6 is a section on line 6-6 of FIG. 3.
  • the body An apertured bifurcated member 2 is secured to the pin 6 with the forked portion thereof extending beyond the arcuate portions 16 and into the cavity provided by the adjacent assembly of plates 15.
  • the opposite free end of the bifurcated member 2 is perforated in a plane normal to the aperture arranged to receive pin 6 and is provided with a suitable bolt or rivet means 5 which secures superimposed resilient laminations 3 between the spaced ears 1.7-I7. It will be noted at this time that the free ends of laminations 3 are slidably disposed in the groove 4 ofthe adjacent bifurcated member 2, thus permitting freedom ofa bending moment about the pin 6.
  • FIG. 2 An alternative form of this invention is shown in FIG. 2.
  • a hollow perforated body member 7 that includes an elongated tapered leg portion 7' provided with a reduced integral end member 8 which is positioned in a pair of rubber elements 9, the latter being confined within the cavity 10 of body member 7.
  • the resiliency of the elements 9 perform the equivalent function of the resilient laminations 3 described earlier with regard to FIG. I.
  • a longitudinally arranged series of these devices are unitized by pin 11 extending through adjacent elements.
  • a flexible starting bar for continuous casting machines comprising a series of longitudinally alined interconnected hollow body members including front and rear portions, said body members having at least a pair of spaced opposed perforated walls pivotally secured together by p'in means, with each of said body members further including interfitting portions adjacent at least one end thereof and including portions extending into and arranged for resilient pivotal movement within an adjacent hollow body member and in a plane normal to said pin means.
  • a flexible starting bar as claimed in claim I wherein the pivoted portion is a rigid member having its end seated in a pair of resilient members in said adjacent hollow body member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
US707388A 1967-04-17 1968-02-19 Flexible starting bar for continuous casting plants Expired - Lifetime US3543833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT793419 1967-04-17

Publications (1)

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US3543833A true US3543833A (en) 1970-12-01

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ID=11125545

Family Applications (1)

Application Number Title Priority Date Filing Date
US707388A Expired - Lifetime US3543833A (en) 1967-04-17 1968-02-19 Flexible starting bar for continuous casting plants

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US (1) US3543833A (enrdf_load_stackoverflow)
DE (1) DE1758153A1 (enrdf_load_stackoverflow)
GB (1) GB1228994A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4987905U (enrdf_load_stackoverflow) * 1972-10-11 1974-07-30
US3871441A (en) * 1972-03-29 1975-03-18 Fives Lille Cail Dummy bar for continuous casting
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1146792B (it) * 1981-05-27 1986-11-19 Danieli Off Mecc Testa a rapido sganciamento automatico per false barre e false barre utilizzanti tale testa sganciabile
CN109093085B (zh) * 2018-08-02 2020-09-08 陕西西理华铸新材料科技有限公司 用于铸铁水平连续铸造的空心型钢引锭杆

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871441A (en) * 1972-03-29 1975-03-18 Fives Lille Cail Dummy bar for continuous casting
JPS4987905U (enrdf_load_stackoverflow) * 1972-10-11 1974-07-30
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
DE1758153A1 (de) 1971-01-14
GB1228994A (enrdf_load_stackoverflow) 1971-04-21

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