US3406737A - Apparatus and method for continuously casting of material, especially ferrous material - Google Patents

Apparatus and method for continuously casting of material, especially ferrous material Download PDF

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Publication number
US3406737A
US3406737A US531913A US53191366A US3406737A US 3406737 A US3406737 A US 3406737A US 531913 A US531913 A US 531913A US 53191366 A US53191366 A US 53191366A US 3406737 A US3406737 A US 3406737A
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US
United States
Prior art keywords
envelope
metal
bands
cast
continuously
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Expired - Lifetime
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US531913A
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English (en)
Inventor
Duflot Jean
Vayssiere Pierre
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Institut de Recherches de la Siderurgie Francaise IRSID
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Institut de Recherches de la Siderurgie Francaise IRSID
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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0605—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 belts, e.g. Hazelett-process
    • 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
    • B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product
    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/0654—Casting belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/02—Casting compound ingots of two or more different metals in the molten state, i.e. integrally cast

Definitions

  • the present invention relates to a method and apparatus for continuously casting of material, especially ferrous material.
  • the process according to the present invention for continuously casting material mainly comprises the steps of continuously forming an elongated envelope, continuously discharging a material to be cast in liquid form into the interior of the envelope as the latter is formed, and continuously moving the envelope and the material therein in a desired direction.
  • the process includes further the step of continuously cooling the envelope while the same is moved in the aforementioned direction.
  • the envelope may be formed by guiding at least two flexible bands toward each other and pressing opposite edge portions of the band against each other with opposite face portion of the bands between the edge Portions spaced from each other.
  • the flexible bands may be in the form of flexible metal bands and the method may include the further step of guiding the metal bands in close contact with the metal cast into the envelope formed by the metal bands so that the metal bands will fuse with the cast material to form a unitary member.
  • the metal bands especially if the material to be cast is steel, may be formed from stainless steel so that the metal bands when united with the cast steel form an inoxidizable outer surface of the final product.
  • the bands may be formed from material which decomposes under the influence of the heat of the material cast into the envelope and in this case the method according to the present invention includes the further step of covering at least the opposite face portions of the band which come into contact with the 'cast metal with a layer of metal prior to the formation of the envelope from the bands.
  • the layer of metal on the bands may be formed by first covering the face portions of the band with adhesive material and subsequently thereto applying metal powder onto the adhesive so as to form a continuous metal layer on the bands.
  • the bands may also be covered with a layer of material adapted to react with the metal cast in the envelope so as to obtain desired surface characteristics on the finished product.
  • the elongated envelope may also be guided between members of predetermined shape and contour so as to form a finished product of desired cross section corresponding to the contour of the members engaging the outer surfaces of the envelope.
  • the apparatus for continuously casting material mainly comprises a container having an inlet opening for feeding hot liquid material to be cast into the container and an outlet opening so that the material fed into the container will be discharged in a continuous stream from the outlet opening, means for continuously forming a consumable envelope aligned with a stream of material discharged from the outlet opening so that the material discharged will be received in and fill the envelope, and means for guiding and moving the envelope with the material received therein in a predetermined direction.
  • the apparatus preferably includes also means for cooling the envelope during movement thereof.
  • the means for continuously forming the aforementioned envelope include roller means for continuously feeding at least one hand of flexible material forming at least part of the envelope.
  • the means for continuously forming the aforementioned envelope include at least two roller means constructed and arranged to press opposite edge portions of at least two bands against each other while leaving face portions of the bands between said edge portions spaced from each other so as to continuously form an elongated space in which the cast material will be received.
  • the means for guiding and moving the envelope include at least two driven rollers and two guide rollers arranged to engage opposite outer surface portions of the envelope.
  • the means for cooling the aforementioned envelope preferably include means for directing jets of cooling fluid against the outer surface of the envelope.
  • the envelope is in form of an elongated sheath which is formed before or during the contact with the material to be cast and which cannot be reused again, and which also may be termed a consumable envelope, in fact, if the envelope is formed from metal, this metal envelope is combined with or fused to the metal poured into the envelope and forms the skin of the final product, whereas if the envelope is formed from material which decomposes under the influence of the heat of the molten metal poured into the envelope, the envelope will disappear during the process.
  • the process according to the present invention comprises the step of continuously forming an elongated envelope in the interior of which one continuously pours metal in liquid form which upon contact with the envelope forms a solid outer shell which is further cooled by means known in the art.
  • envelopes formed from bands decomposable by the heat of the liquid metal and bands from carton and textiles have been used.
  • the powdered metal may be of the same composition as the base metal to be-cast or the powder may be of a different composition. In the latter case, by using a powder of ferromanganese, one has succeeded in obtaining a considerable increase in the surface hardness of the base metal.
  • An advantage of the process according to the present invention consists in the use of the aforementioned consumable envelope.
  • a first type of envelope is constituted by bands of material which is decomposable by heat, such as for instance carton or textile material, and which upon contact with the cast liquid metal partially decomposes and becomes gradually detached from the solidifying product, which detachment is produced by jets of cooling liquid or cooling gas.
  • the second type of envelopes is constituted by metallic bands which are, contrary to the envelopes of carton or textile material, not decomposed but are integrated into the cast metal and form the outer skin of the cast product.
  • the surface quality of the final product will be that of the metallic envelope. If the product produced is flat, one can, after rolling the product to a small thickness, utilize it again to produce an envelope in a following fabrication step while conserving a constant surface quality.
  • rollers rotating in opposite directions relative to each other are used forming the envelope and in the space between the rollers different forms may be obtained, for instance the rollers may be flat, concave or be formed with different grooves.
  • the envelope formed by pressing the edge portions of two bands against each other by the extremities of the two rollers is filled with metal and the pressure of the metal applies the envelope against the surface portions of the rollers between the extremities thereof so that the metal will obtain a well defined form. In this way all desired forms may be obtained and even profiles which are difiicult to obtain with means known in the art.
  • the process according to the present invention is simple. At the start of the casting process it is sufficient to close the envelope at its lower end and to fill the closed end with a cooling material, for instance powdered metal and to subsequently guide the envelope along a path along which the cast metal bar is to be formed.
  • a cooling material for instance powdered metal
  • the envelope is made from textile or carton the lower end of the elongated envelope is sewn together or clasped together, if the envelope is formed from a metal one closes the lower end of the envelope by crimping or welding the lower extremities of the bands forming the envelope to each other.
  • FIG. 1 is a schematic vertical cross-section illustrating the apparatus of the present invention.
  • FIG. 2 is a horizontal cross-section showing two rollers pressing edge "portion of two bands forming the envelope according to the present invention against each other.
  • the apparatus comprises a bath of liquid metal 1 continuously replenished by means not shown in the drawing and flowing out from the container through an outlet opening 2 at the bottom thereof so as to pass in a continuous stream through guide or shield means 3.
  • the apparatus comprises further two bands 4 and 4a, which may for instance heformed .from carton, and which are taken ofi from supply spools Sand 5a by two pairs of driven rollers 9, 10 and 9a, 1011 respectively.
  • Adhesive applying means 6 and 6a are arranged respectively between the bobbins 5 and 5a and the aforementioned drive rollers which apply to the upper surfaces of the hands a layer of adhesive and the upper surfaces of the bands to which a layer of adhesive is applied are respectively guided beneath funnels 7 and 7a containing a powdered material, for instance powdered metal, which is applied to the adhesive layers so as to form on the latter layers of powdered metal 8 and 8a.
  • the powdered metal layer is pressed against the upper surfaces of the bands 4 and 4a as the latter pass through the driven pairs of rolls 9, 10 and 9a, 10a, respectively and subsequently the bands are passed over the rollers 11 and 11a which may have a form as shown in FIG. 2 so as to press the edge portions of the bands 4 and 4a against each other to form an elongated envelope united 'at the lateral portions 20 and 21 to each other, whereas the face portions between the connected end portions are spaced from each other so that the liquid metal emanating from the shield means 3 will be received in the envelope, whereby the pressure of the metal presses the spaced portions of the envelope against the surfaces of the rotating rollers 11 and 11a.
  • the ingot thus formed comprising the outer solidified shell 16 and the still liquid interior part 16a, is guided by pairs of rollers 17 and 17a, 18 and 18a, and 19 and 19a to a place of further use. At least one pair of the rollers is driven by means not shown in the drawing.
  • FIG. 2 shows a top view'of the two rollers 11 and 11a drawn to a larger scale. These rollers press the edge portions 20 and 21 of the two bands 4 and 4a against each other.
  • the layers 8 and 8a of powdered metal are not shown any longer in FIG. 2 because these layers form part of the solidified metal shell 16 confining the still liquid portion 16a in the interior of the ingot. It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of continuous casting apparatus 'differing from thetypes described above. I
  • the bands constituting the envelopes may also be covered by other materials, which may be solid.
  • the bands may also be formed from metal, for instance steel or stainless steel.
  • a continuous casting process comprising the steps of continuously forming an elongated circumferentially closed envelope of material adapted to absorb a certain amount of heat and having an outer layer which decomposes under the influence of heat and an inner layer of metal powder; continuously discharging material to be cast in hot molten state into the interior of the envelope as the latter is formed; and continuously moving the envelope and the material therein in a desired direction.
  • said envelope is formed by guiding at least two flexible bands toward each other and pressing edge portions of said bands against each other with opposite face portions of said bands between said edge portions spaced from each other.
  • a continuous casting apparatus comprising at least two roller means for continuously forming an elongated circumferentially closed envelope from sheet material adapted to absorb a certain amount of heat and having an outer layer which decomposes under the influence of heat and an inner layer of metal powder, said elongated envelope having at least one open end; means for discharging a continuous stream of material to be cast into said open end of said envelope; and means for guiding and moving said envelope with the material therein in a predetermined direction.
  • said means for cooling said envelope comprise means for directing jets of cooling fluid against the outer surface of said envelope.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US531913A 1965-03-08 1966-03-04 Apparatus and method for continuously casting of material, especially ferrous material Expired - Lifetime US3406737A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8303A FR1435936A (fr) 1965-03-08 1965-03-08 Procédé et dispositif de coulée continue de produits liquides
FR44984A FR89382E (fr) 1965-03-08 1966-01-06 Procédé et dispositif de coulée continue de produits liquides

Publications (1)

Publication Number Publication Date
US3406737A true US3406737A (en) 1968-10-22

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US531913A Expired - Lifetime US3406737A (en) 1965-03-08 1966-03-04 Apparatus and method for continuously casting of material, especially ferrous material

Country Status (5)

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US (1) US3406737A (de)
BE (1) BE677256A (de)
DE (1) DE1508876A1 (de)
FR (2) FR1435936A (de)
LU (1) LU50552A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093693A (en) * 1969-08-11 1978-06-06 Lemelson Jerome H Method for making composite articles
US4335494A (en) * 1966-07-26 1982-06-22 Lemelson Jerome H Method of roll forming a composite
US4356618A (en) * 1978-11-03 1982-11-02 Alcan Research And Development Limited Production of rolled products
US5378297A (en) * 1993-01-11 1995-01-03 Boam R&D Co., Ltd. Ferrite chip bead and method for making same
US5615727A (en) * 1995-02-24 1997-04-01 Ollman; Melvin L. Composite metal strip and methods of making same
US5669436A (en) * 1991-03-18 1997-09-23 Aluminum Company Of America Method of continuously casting composite strip

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3440236A1 (de) * 1984-11-03 1986-05-22 Mannesmann AG, 4000 Düsseldorf Verfahren und vorrichtung zum bandstranggiessen von metallen, insbesondere von stahl
DE3440237C2 (de) * 1984-11-03 1986-11-06 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum Bandstranggießen von Metallen, insbesondere von Stahl
EP0237478B1 (de) * 1986-03-10 1989-05-24 Larex Ag Abdichtung einer Giessdüse gegen den Giessraum einer Stranggiessvorrichtung mit mindestens einem umlaufenden, flexiblen Kokillenband
AT397478B (de) * 1991-10-03 1994-04-25 Voest Alpine Stahl Verfahren und vorrichtung zum stranggiessen eines dünnen bandes oder einer dünnen bramme
DE19651324C2 (de) * 1996-12-11 1999-03-18 Schloemann Siemag Ag Verfahren und Vorrichtung zur Erzeugung von umhüllten Stranggießprodukten
DE19850213C2 (de) * 1998-01-23 2001-08-30 Sms Demag Ag Gießverfahren für ein dünnes Metallband und zugehörige Gießvorrichtung
DE10011758C2 (de) * 2000-03-13 2003-10-16 C D Waelzholz Produktionsgmbh Verfahren zur Herstellung von dünnwandigen Bauteilen aus Stahl und danach hergestellte Bauteile
DE102006057858A1 (de) 2006-12-08 2008-08-21 Vladimir Volchkov Verfahren zum Stranggießen (hoch)legierter oder/und hochgekohlter Stähle
DE102012017684A1 (de) 2012-08-31 2014-03-06 Vladimir Volchkov Verfahren zum Stranggießen der NE-Metalle
DE102012017682A1 (de) 2012-08-31 2014-03-06 Vladimir Volchkov Verfahren zum Stranggießen der NE-Metalle
CN115921809A (zh) * 2023-01-31 2023-04-07 南京净环热冶金工程有限公司 一种金属坯连续铸造及轧制长材的方法及设备

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055980A (en) * 1933-04-12 1936-09-29 Alfred J Liebmann Method of casting or molding metals
GB491341A (en) * 1936-07-15 1938-08-31 Metal Carbides Corp Improvements in or relating to the casting of metal
US2128943A (en) * 1936-04-01 1938-09-06 American Rolling Mill Co Formation of encased structures by direct casting
CH203489A (de) * 1937-03-24 1939-03-15 Kreidler Alfred Verfahren und Vorrichtung zum fortlaufenden Giessen von Strängen.
US2174733A (en) * 1936-10-21 1939-10-03 Clad Metals Ind Inc Clad metal and method of making the same
CH228380A (de) * 1939-04-12 1943-08-15 Ver Leichtmetallwerke Gmbh Giessverfahren zur Herstellung von Blöcken aus Aluminium oder Aluminiumlegierungen, insbesondere kupferhaltigen Aluminiumlegierungen und Vorrichtung zur Durchführung des Verfahrens.
DE742180C (de) * 1939-11-09 1943-11-24 Velmet Veltener Leichtmetall G Kokille zum Giessen von Straengen fuer plattenfoermige Koerper
US2692411A (en) * 1951-03-12 1954-10-26 Joseph B Brennan Method of continuous casting
US3123856A (en) * 1964-03-10 figure
US3163896A (en) * 1961-06-23 1965-01-05 Aluminium Lab Ltd Coated belt and method of making same for continuous metal casting process
US3240846A (en) * 1962-08-06 1966-03-15 Allied Chem Method and apparatus for preparing polyurethane foam sandwich structure
US3276082A (en) * 1961-09-22 1966-10-04 Reynolds Metals Co Methods and apparatus for making cylinder block constructions or the like
US3343590A (en) * 1965-02-24 1967-09-26 Continental Oil Co Continuous horizontal casting in a sacrificial web

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123856A (en) * 1964-03-10 figure
US2055980A (en) * 1933-04-12 1936-09-29 Alfred J Liebmann Method of casting or molding metals
US2128943A (en) * 1936-04-01 1938-09-06 American Rolling Mill Co Formation of encased structures by direct casting
GB491341A (en) * 1936-07-15 1938-08-31 Metal Carbides Corp Improvements in or relating to the casting of metal
US2174733A (en) * 1936-10-21 1939-10-03 Clad Metals Ind Inc Clad metal and method of making the same
CH203489A (de) * 1937-03-24 1939-03-15 Kreidler Alfred Verfahren und Vorrichtung zum fortlaufenden Giessen von Strängen.
CH228380A (de) * 1939-04-12 1943-08-15 Ver Leichtmetallwerke Gmbh Giessverfahren zur Herstellung von Blöcken aus Aluminium oder Aluminiumlegierungen, insbesondere kupferhaltigen Aluminiumlegierungen und Vorrichtung zur Durchführung des Verfahrens.
DE742180C (de) * 1939-11-09 1943-11-24 Velmet Veltener Leichtmetall G Kokille zum Giessen von Straengen fuer plattenfoermige Koerper
US2692411A (en) * 1951-03-12 1954-10-26 Joseph B Brennan Method of continuous casting
US3163896A (en) * 1961-06-23 1965-01-05 Aluminium Lab Ltd Coated belt and method of making same for continuous metal casting process
US3276082A (en) * 1961-09-22 1966-10-04 Reynolds Metals Co Methods and apparatus for making cylinder block constructions or the like
US3240846A (en) * 1962-08-06 1966-03-15 Allied Chem Method and apparatus for preparing polyurethane foam sandwich structure
US3343590A (en) * 1965-02-24 1967-09-26 Continental Oil Co Continuous horizontal casting in a sacrificial web

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335494A (en) * 1966-07-26 1982-06-22 Lemelson Jerome H Method of roll forming a composite
US4093693A (en) * 1969-08-11 1978-06-06 Lemelson Jerome H Method for making composite articles
US4356618A (en) * 1978-11-03 1982-11-02 Alcan Research And Development Limited Production of rolled products
US5669436A (en) * 1991-03-18 1997-09-23 Aluminum Company Of America Method of continuously casting composite strip
US5378297A (en) * 1993-01-11 1995-01-03 Boam R&D Co., Ltd. Ferrite chip bead and method for making same
US5615727A (en) * 1995-02-24 1997-04-01 Ollman; Melvin L. Composite metal strip and methods of making same

Also Published As

Publication number Publication date
FR1435936A (fr) 1966-04-22
FR89382E (fr) 1967-06-16
LU50552A1 (de) 1966-05-03
DE1508876A1 (de) 1969-11-13
BE677256A (de) 1966-08-01

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