US3439730A - Method and apparatus for continuous casting of metal in horizontal direction,especially for continuous casting of thin metal bands,plates or the like - Google Patents

Method and apparatus for continuous casting of metal in horizontal direction,especially for continuous casting of thin metal bands,plates or the like Download PDF

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Publication number
US3439730A
US3439730A US566588A US3439730DA US3439730A US 3439730 A US3439730 A US 3439730A US 566588 A US566588 A US 566588A US 3439730D A US3439730D A US 3439730DA US 3439730 A US3439730 A US 3439730A
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United States
Prior art keywords
strand
metal
chill
band
continuous casting
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Expired - Lifetime
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US566588A
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English (en)
Inventor
Gunther Moritz
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Vereinigte Aluminium Werke AG
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Vereinigte Aluminium Werke AG
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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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing

Definitions

  • ABSTRACT OF THE DISCLOSURE A method and apparatus for casting metal strands in which a stream of molten metal is passed in substantially horizontal direction through a chill and the thus formed metal strand, after complete solidification, is guided likewise in substantially horizontal direction over rigid guide means spaced downstream from the chill, whereas the strand portion intermediate the chill and the rigid guide means is supported on a plurality of rollers which are spaced in direction of movement of the strand and mounted movable in substantially vertical direction.
  • the present invention relates to a method for continuous casting of metal in horizontal direction, especially for continuous casting of thin metal bands, plates or the like and an apparatus for carrying out the method.
  • 'It is an object of the present invention to provide for a method and apparatus in which the aforementioned diiiiculties in continuous casting of metal in horizontal direction are avoided.
  • the method of the present invention for continuous casting of thin metal strands such as bands, plates and the like in substantially horizontal direction mainly comprises the steps of guiding a thin stream of molten metal in substantially horizontal direction through a chill to solidify the molten metal at outer portions thereof so as to form a metal strand, guiding the metal strand thus formed after complete solidification in substantially horizontal direction over rigid guide means spaced in direction of movement of the strand away from the chill, and supporting the strand intermediate the chill and the rigid guide means at a plurality of points arranged spaced from each other in the direction of movement of the strand and movably in substantially vertical direction.
  • the method includes preferably further the step vof exerting at each of the aforementioned points an upwardly directed force on the strand of such a magnitude that the total weight of the strand between the chill and the rigid guide means is counterbalanced by the upwardly directed forces.
  • the apparatus according to the present invention for continuous casting of a thin metal strand such as a band, plate and the like in substantially horizontal direction mainly comprises chill means formed with a substantially horizontal passage therethrough of a cross section substantially equal to the cross section of the strand to be produced and having an inlet end and an opposite outlet end, means for continuously feeding molten metal into the inlet end of the passage so that the molten metal passes through the passage and leaves the outlet end of the chill means as a strand of metal solidified at outer portions thereof while still containing a core of molten metal, a plurality of support means arranged spaced from each other in direction of movement of the strand and respectively engaging the latter at spaced portions of its bottom face, mounting means mounting the support means movably in vertical direction, and biasing means cooperating with said support means for exerting on the strand upwardly directe-d forces so as to counterbalance the weight of the strand between the chill and the rigid guide means.
  • the support means are preferably in the form of rolls each turnably supported at one end of a 'double-armed lever and the biasing means are preferably in the form of weights connected to the other end of each lever.
  • the apparatus may also include means for passing a cooling liquid, such as water, along the surfaces of the strand leaving the outlet end of the chill means and means arranged between a pair of successive support rolls for preventing passage of cooling water along the surface of the strand beyond the last-mentioned means so as to maintain the strand of metal at a predetermined temperature.
  • FIG. 1 is a schematic partly sectioned side view of the apparatus according to the present invention.
  • FIG. 2 is a partial cross section illustrating the left portion of the apparatus, as viewed in FIG. 1, at an enlarged scale;
  • FIG. 3 is a front view of one of the supporting rolls
  • FIG. 4 is a partial cross-sectional view of the apparatus and illustrating means for preventing passage of cooling water along the surfaces of the cast metal strand;
  • FIG, 5 is a partial cross-sectional view similar to FIG. 4 and illustrating another embodiment of the means for preventing passage of cooling water along the strand of cast metal.
  • the casting apparatus includes a water-cooled me-tal mold or chill 1 formed with a passage 2 therethrough having an inlet end 2 and an outlet end 2" and a cross section substantially corresponding to the cross section of the metal band or the like to be produced by the casting apparatus.
  • a container 3 having walls of hea-t-resistant material is arranged at one side, that is the left side as viewed in FIGS.
  • the chill 1 is formed in the region of the outlet end 2" of the passage 2 therethrough with a plurality of openings 7 directed with their outer ends toward the strand of metal 4 so that cooling water fed into the interior of the chill through a conduit 1a may flow through openings 7 in streams of cooling Water 8 along the outer surfaces of the metal strand 4 to expedite further cooling of the latter.
  • the cooling water will not flow only along the upper face of the strand 4 but also along the bottom face thereof to which it will adhere due to surface tension.
  • the more or less solidified strand 4 is guided over a plurality of support means which are preferably in the form of movably mounted rolls onto rigid guide means 6 spaced in direction of movement of the band a considerable distance from the chill 1. As shown in FIG.
  • each of the rolls 5 is turnably supported at one end of a doublearmed lever 5a which in turn is tiltably mounted intermediate its ends on mounting means 5b.
  • Biasing means l which are preferably in the form of weights 9 are respectively connected to the other ends of the levers 5a so as to press the rolls carried by the levers against the bottom face of the strand 4.
  • the weight 9 and the two arms of each lever 5a are dimensioned in such a manner that the force with which each roll 5 is pressed in upward direction against the bottom face of the band 4 is substantially equal to the weight of the portion of the band supported by the respective roll, that is to the weight of the band portion between successive dotted vertical lines 10 indicated in FIGS. 1 and 2.
  • the rolls 5 are preferably constructed in such a manner as to permit fiow of cooling water along the bottom face of the band beyond the respective roll and for this purpose each of the rolls 5 may ⁇ be provided with a plurality of circumferential grooves 11 as shown in the front view of FIG. 3 so that the cooling water which flows at high speed along the bottom face of the band may pass through the grooves 11.
  • the continuously cast band 4 is divided into sections, coiled up, rolled, or further acted upon by means not Vshown in the drawing and not forming part of the present invention.
  • the rigid guide 6 is spaced from the chill 1 at such a distance that no transverse forces can be transmitted to the region of the band at the outlet end of the passage 2 which are great enough to cause breakage of the band which in this region is only partly solidified.
  • the distance between the rigid guide means and the outlet end from the chill can be held the shorter, the thinner the band and the more plastic the metal from which the band is formed.
  • the distance between successive rolls should be the smaller, the more flexible the band.
  • the method according to the present invention can be improved by reducing the action of the cooling water flowing along the cast Iband by deflecting the cooling water from the outer surface of the band before the latter is completely solidified.
  • the band remains in this case in plastic condition over a longer part of the distance between the chill and therigid guide means so that reactions from the rigid guide means 6 onto the portion of the band leaving the chill are suppressed in a better manner. In this way, a cooling of the band 4 to the temperature of the ambient air will be prevented.
  • FIGS. 4 and 5 Two modifications of means for detiecting the cooling water from the outer surface of the band 4 are shown in FIGS. 4 and 5.
  • the means for deflecting the cooling water 8 from the outer surfaces of the band 4 shown in FIG. 4 include a frame 12 fixedly mounted about the band 4 and carrying a pair of wiper blades 13 of heat-resistant elastic material, for instance Teflon, which elastically engage with end edges thereof the upper and lower faces of the band 4 so as to deflect the streams of cooling water 8 from the surfaces.
  • a frame 12 fixedly mounted about the band 4 and carrying a pair of wiper blades 13 of heat-resistant elastic material, for instance Teflon, which elastically engage with end edges thereof the upper and lower faces of the band 4 so as to deflect the streams of cooling water 8 from the surfaces.
  • FIG. 5 A different arrangement for the same purpose is shown in FIG. 5 in which a plurality of nozzles v14 are provided through which compressed air from a nonillustrate'd source of compressed air is blown in form of air streams against the top and bottom faces of the band 4, which air streams are guided by xedly mounted deflector blades 15 in such a manner that the streams of cooling water 8 passing along the top and bottom faces of band 4 are deflected therefrom as shown in FIG. 5.
  • the wiper blades 13 as shown in FIG. 4, respectively, the nozzles and deiiector blades 14 and 15 are shown in FIG. 5, are arranged either in the space between the outlet end of the passage 2 through the chill 1 and the first of the rolls 5, between the first and the second of the rolls 5 or between any of the pair of rolls depending on the metal to be cast in the apparatus, the casting speed and the thickness of the strand produced.
  • Electrolytic copper has been cast with the same arrangement whereby the means for deflecting the cooling water have been arranged between the second and the third roll.
  • the end temperature of the band was, in this case, 300 C.
  • a method for continuous casting of thin metal strands such as bands, plates, and the like in substantially horizontal direction comprising the steps of guiding a thin Stream of molten metal in substantially horizontal direction through a chill to solidify the metal at outer portions thereof so as to form a metal strand; guiding the thus obtained strand of metal after complete solidiication in substantially horizontal direction over rigid guide means spaced in direction of movement of the strand away from the chill; and yieldingly supporting said strand intermediate said chill and said rigid guide means at a plurality of points arranged spaced from each other in said direction and movably in substantially vertical direction in such a manner as to avoid creations of transverse forces which could lead to breakage of the strand.
  • chill means is in the form of a hollow water cooled mold formed about said outlet end of said passage therethrough with a plurality of openings for discharge of cooling water from the interior of the mold onto the surfaces of the metal strand leaving the outlet end of the passage.
  • said last mentioned means includes a pair of lwiper blades from flexible material arranged to respectively engage the upper and lower face of said strand so as to deflect cooling water owing along said faces therefrom.
  • said last mentioned means includes nozzle means directed toward the upper and lower face of said strand for blowing streams of compressed air against said faces and dellector blades cooperating with said nozzle means for deflecting said air streams in such a manner so as to decct cooling water away from said faces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US566588A 1965-07-24 1966-07-20 Method and apparatus for continuous casting of metal in horizontal direction,especially for continuous casting of thin metal bands,plates or the like Expired - Lifetime US3439730A (en)

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Application Number Priority Date Filing Date Title
DEV0028968 1965-07-24

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US3439730A true US3439730A (en) 1969-04-22

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US566588A Expired - Lifetime US3439730A (en) 1965-07-24 1966-07-20 Method and apparatus for continuous casting of metal in horizontal direction,especially for continuous casting of thin metal bands,plates or the like

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US (1) US3439730A (pt)
AT (1) AT264026B (pt)
BE (1) BE683754A (pt)
CH (1) CH445727A (pt)
FR (1) FR1486340A (pt)
GB (1) GB1090518A (pt)
LU (1) LU51610A1 (pt)
NL (1) NL6609857A (pt)
NO (1) NO115920B (pt)
SE (1) SE302829B (pt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598173A (en) * 1968-10-17 1971-08-10 Olin Mathieson Continuous casting machine having a variable mold length and adapted for casting in a variety of sizes at high speed
EP0013076A1 (en) * 1978-11-27 1980-07-09 Secretary of State for Industry in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland Process and apparatus for producing metallic slurries
US5431214A (en) * 1992-05-12 1995-07-11 Yoshida Kogyo K.K. Apparatus for continuous casting

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284503A (en) * 1939-09-14 1942-05-26 Himself And Julia Lce Cox Will Apparatus for continuous casting
GB762513A (en) * 1954-02-17 1956-11-28 Boehler & Co Ag Geb Improvements in continuous casting installations
US2895190A (en) * 1955-09-12 1959-07-21 Mannesmann Ag Continuous casting plants
BE626982A (pt) * 1962-01-12 1963-01-31
US3107404A (en) * 1960-04-26 1963-10-22 Electro Chimie Metal Cutting of continuous cast bars
US3286309A (en) * 1963-06-06 1966-11-22 Aluminum Co Of America Method and apparatus for horizontal casting of ingots

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284503A (en) * 1939-09-14 1942-05-26 Himself And Julia Lce Cox Will Apparatus for continuous casting
GB762513A (en) * 1954-02-17 1956-11-28 Boehler & Co Ag Geb Improvements in continuous casting installations
US2895190A (en) * 1955-09-12 1959-07-21 Mannesmann Ag Continuous casting plants
US3107404A (en) * 1960-04-26 1963-10-22 Electro Chimie Metal Cutting of continuous cast bars
BE626982A (pt) * 1962-01-12 1963-01-31
US3286309A (en) * 1963-06-06 1966-11-22 Aluminum Co Of America Method and apparatus for horizontal casting of ingots

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598173A (en) * 1968-10-17 1971-08-10 Olin Mathieson Continuous casting machine having a variable mold length and adapted for casting in a variety of sizes at high speed
EP0013076A1 (en) * 1978-11-27 1980-07-09 Secretary of State for Industry in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland Process and apparatus for producing metallic slurries
US5431214A (en) * 1992-05-12 1995-07-11 Yoshida Kogyo K.K. Apparatus for continuous casting

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Publication number Publication date
GB1090518A (en) 1967-11-08
LU51610A1 (pt) 1966-09-21
NL6609857A (pt) 1967-01-25
BE683754A (pt) 1966-12-16
SE302829B (pt) 1968-08-05
CH445727A (de) 1967-10-31
FR1486340A (fr) 1967-06-23
AT264026B (de) 1968-08-12
NO115920B (pt) 1968-12-30

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