EP3486002A1 - Verteilerapparat für stranggiessmachine - Google Patents

Verteilerapparat für stranggiessmachine Download PDF

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Publication number
EP3486002A1
EP3486002A1 EP18206401.4A EP18206401A EP3486002A1 EP 3486002 A1 EP3486002 A1 EP 3486002A1 EP 18206401 A EP18206401 A EP 18206401A EP 3486002 A1 EP3486002 A1 EP 3486002A1
Authority
EP
European Patent Office
Prior art keywords
feeding
distribution device
continuous casting
casting machine
tip
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Withdrawn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
EP18206401.4A
Other languages
English (en)
French (fr)
Inventor
Alberto Presezzi
Giovanni Sardara
Raffaele VERONESE
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.)
Bruno Presezzi SpA
Original Assignee
Bruno Presezzi SpA
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 Bruno Presezzi SpA filed Critical Bruno Presezzi SpA
Publication of EP3486002A1 publication Critical patent/EP3486002A1/de
Withdrawn legal-status Critical Current

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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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0645—Sealing means for the nozzle between the travelling surfaces

Definitions

  • the present invention relates to a feeding/distribution device of a continuous casting machine.
  • the present invention relates to a feeding/distribution device, known as tip, installed in a continuous casting machine, known as caster, for the production of aluminum or zinc strips.
  • the tip is designed to feed the aluminum or zinc in liquid form to the casting rolls and is installed between the rolls on the inlet of the molten metal.
  • US2017106435A1 discloses a caster tip for a twin roll continuous strip caster for non-ferrous metals.
  • the caster tip includes a caster tip body made primarily of a ceramic material, and an electric resistance heater thermally connected to the caster tip body for pre-heating the caster tip body to a predetermined temperature.
  • GB2524962 discloses a feed tip made from N17, a calcium silicate refractory material which is commonly used in TRC feed tips, in order to be non-conductive and non-magnetic so as to be transparent to the magnetic fields generated by the electromagnetic edge dam.
  • US2014367065 discloses a thin roll strip caster having delivery nozzles made of a refractory material such as zirconia graphite, alumina graphite.
  • US2013/089457 discloses a composite material suitable for use in a continuous casting nozzle and formed by a body and a filler.
  • the body is formed by compression-molding silicon carbide fibers or carbon fibers into a compact and baking the compact.
  • the form of carbon fibers may be staple fibers or filament fibers.
  • the porous body may be a porous carbon substrate having an average pore size of about 5 ⁇ m, a C/C composite or a porous body composed of alumina or alumina fibers.
  • GB1287510 discloses a flat injection nozzle made of a highly refractory material such as graphite and having lateral cheeks also made of graphite or like highly refractory material.
  • US5259439 discloses a delivery nozzle formed as an elongate body made of a refractory material such as alumina graphite.
  • EP1867412 discloses a nozzle having a pouring port side main body formed of aluminum sintering compact and a pouring basin side main body formed of graphite.
  • a coating layer is provided at a portion except the vicinity of a pouring port.
  • the coating layer is made by preparing a boron nitride spray in which boron nitride powder is mixed in solvent (ethanol), and a graphite spray in which graphite powder is mixed in solvent (ethanol), by repeating ten times an operation of laminating the powders on the inner surface of the main body, except the vicinity of pouring port where masking is applied, using alternately the both sprays, and thereafter sintering the laminated powders at 300°C temperature.
  • the pouring port side main body is formed of boron nitride sintering compact, and the pouring basin side main body is formed of graphite.
  • a coating layer is provided partially on the inner surface of the pouring port side main body.
  • US4619309 discloses that nozzles for metal feeding have been developed wherein the parts of the nozzle which come into contact with the liquid metal are made of a refractory material made up of a mixture of 30% diatomaceous earth (almost pure silica in the form of microscopic cells), 30% asbestos fibers, 20% sodium silicate (dry weight) and 20% lime (to form calcium silicate).
  • the tip made of ceramic fiber, has an average lifespan of approximately ten days of continuous casting of aluminum and approximately fifteen days for zinc.
  • the replacement of the tip obviously entails stopping the continuous casting apparatus in order to remove the depleted tip and install a new one.
  • the tip is constituted by two shells, an upper one and a lower one, and baffles, also made of ceramic material, are located inside it and have the purpose of conveying the flow of liquid metal.
  • the width and length (depth) of the tip are sized in relation to the width of the strip to be produced and to the diameter of the roll installed on the caster.
  • the wear of the tip which is made of ceramic fiber, generates a continuous degradation of the quality of the produced strip.
  • the causes of this deterioration are due to thermal stress, chemical aggression, and mechanical abrasion, for example due to an incorrect placement of the setback.
  • the tip is in fact made of material that is considered carcinogenic.
  • the aim of the present invention is to provide a feeding/distribution device of a continuous casting machine that overcomes the drawbacks of the cited prior art.
  • an object of the invention is to provide a feeding/distribution device of a continuous casting machine that ensures a substantially longer operating life with respect to the tips of the prior art.
  • a further object of the invention is to provide a feeding/distribution device of a continuous casting machine that allows to obtain a product with superior technical characteristics with respect to tips of the traditional type.
  • a further important object of the invention is to provide a feeding/distribution device of a continuous casting machine that eliminates the carcinogenic risk.
  • Another object of the present invention is to provide a device which, by virtue of its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
  • a feeding/distribution device of a continuous casting machine comprising an upper shell joined to a lower shell so as to form a chamber which has an inlet and an outlet; said device being installed at casting rolls of a continuous casting machine in order to feed liquid aluminum or zinc to said casting rolls; said device being characterized in that it is made of composite materials based on carbon, graphite, calcium silicate.
  • the feeding/distribution device of a continuous casting machine includes an upper shell 2, which is joined to a lower shell 3 so as to form a chamber 4 which has an inlet 5 and an outlet 6.
  • the feeding/distribution device commonly known as tip, is installed in a continuous casting machine, known as caster, for the production of aluminum or zinc strips.
  • the feeding/distribution device 1 feeds the liquid aluminum or zinc to the casting rolls 20 of the machine and is installed between the rolls 20, on the inlet of the molten metal, as shown schematically in Figure 1 .
  • the width and length (depth) of the feeding/distribution device 1 are sized in relation to the width of the strip to be produced and to the diameter of the rolls 20.
  • baffles 7 which have the task of conveying the flow of the liquid metal.
  • the feeding/distribution device is made of composite materials based on carbon, graphite, calcium silicate.
  • the feeding/distribution device eliminates the R49 carcinogenic inhalation danger.
  • a further advantage is constituted by the fact of using an environmentally friendly material, which is not classified as dangerous, with consequent elimination of the problem of the disposal of the material.
  • the feeding/distribution device ensures, by means of the innovative refractory composite material, an operating life that is extended substantially, up to approximately 300%, with respect to traditional ceramic materials.
  • the feeding/distribution device has resistance to wear and to high temperatures.
  • a further advantage is constituted by the fact that defects caused by thermal and chemical fatigue phenomena are eliminated.
  • a further important advantage of the feeding/distribution device according to the present invention is constituted by the reduction of the stops of the caster, with consequent productivity increase.
  • the increase in productivity is associated with a significant increase in the quality of the final product.
  • a further advantage is provided by the possibility to reuse the internal members, i.e., the baffles of the tip, for multiple casting campaigns.
  • the invention achieves the intended aim and objects, providing a feeding/distribution device, particularly studied for continuous casting machines for the production of strips of aluminum or zinc, that allows to improve the quality of the product and most of all eliminates the risks due to the use of ceramic materials according to the background art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP18206401.4A 2017-11-17 2018-11-15 Verteilerapparat für stranggiessmachine Withdrawn EP3486002A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201700131837 2017-11-17

Publications (1)

Publication Number Publication Date
EP3486002A1 true EP3486002A1 (de) 2019-05-22

Family

ID=61527334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18206401.4A Withdrawn EP3486002A1 (de) 2017-11-17 2018-11-15 Verteilerapparat für stranggiessmachine

Country Status (2)

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US (1) US20190151936A1 (de)
EP (1) EP3486002A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114769528A (zh) * 2022-03-18 2022-07-22 江苏鼎胜新能源材料股份有限公司 一种用于高端铝箔坯料生产的多级分流铸咀

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1287510A (en) 1969-12-26 1972-08-31 Creusot Loire Improvements in or relating to the continuous casting of metals
US4619309A (en) 1978-01-30 1986-10-28 Swiss Aluminium Ltd. Nozzle for strip casting
US5259439A (en) 1990-04-04 1993-11-09 Ishikawajima-Harima Heavy Industries Company Limited Strip casting
EP1867412A1 (de) 2005-03-24 2007-12-19 Sumitomo Electric Industries, Ltd. Giessdüse
US20130089457A1 (en) 2010-06-04 2013-04-11 Sumitomo Electric Industries Ltd Composite material, part for continuous casting, continuous casting nozzle, continuous casting method, cast material, and magnesium alloy cast coil material
US20140367065A1 (en) 2013-06-14 2014-12-18 Nucor Corporation Thin roll strip caster and method of operating the same
GB2524962A (en) 2014-04-07 2015-10-14 Cambridge Entpr Ltd Strip casting
US20170106435A1 (en) 2015-10-20 2017-04-20 Pyrotek Engineering Materials Limited Caster tip for a continuous casting process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10013035B2 (en) * 2015-07-07 2018-07-03 Getac Technology Corporation Testing method and electronic device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1287510A (en) 1969-12-26 1972-08-31 Creusot Loire Improvements in or relating to the continuous casting of metals
US4619309A (en) 1978-01-30 1986-10-28 Swiss Aluminium Ltd. Nozzle for strip casting
US5259439A (en) 1990-04-04 1993-11-09 Ishikawajima-Harima Heavy Industries Company Limited Strip casting
EP1867412A1 (de) 2005-03-24 2007-12-19 Sumitomo Electric Industries, Ltd. Giessdüse
US20130089457A1 (en) 2010-06-04 2013-04-11 Sumitomo Electric Industries Ltd Composite material, part for continuous casting, continuous casting nozzle, continuous casting method, cast material, and magnesium alloy cast coil material
US20140367065A1 (en) 2013-06-14 2014-12-18 Nucor Corporation Thin roll strip caster and method of operating the same
GB2524962A (en) 2014-04-07 2015-10-14 Cambridge Entpr Ltd Strip casting
US20170106435A1 (en) 2015-10-20 2017-04-20 Pyrotek Engineering Materials Limited Caster tip for a continuous casting process

Also Published As

Publication number Publication date
US20190151936A1 (en) 2019-05-23

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