US3572423A - Cooling device for castings in continuous casting installations for heavy metals or alloys thereof,particularly steel - Google Patents

Cooling device for castings in continuous casting installations for heavy metals or alloys thereof,particularly steel Download PDF

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Publication number
US3572423A
US3572423A US762481A US3572423DA US3572423A US 3572423 A US3572423 A US 3572423A US 762481 A US762481 A US 762481A US 3572423D A US3572423D A US 3572423DA US 3572423 A US3572423 A US 3572423A
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United States
Prior art keywords
casting
cooling
cooling section
jets
alloys
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Expired - Lifetime
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US762481A
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English (en)
Inventor
Klaus Bick
Wolfgang Weinreich
Lothar Harmsen
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Benteler Deutschland GmbH
Paderwerk Gebr Benteler
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Paderwerk Gebr Benteler
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Assigned to BENTELER AKTIENGESELLSCHAFT reassignment BENTELER AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BENTELER-WERKE AKTIENGESELLSCHAFT
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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
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling

Definitions

  • a cooling device for castings in continuous casting instailations for heavy metals or alloys thereof, particularly steel which comprises a copper casting die serving as continuous mold to the interior of which a coolant is admitted for indirectly cooling a casting.
  • a cooling section is formed by spraying nozzles following the casting die and serving for directly spraying the coolant onto the casting.
  • This cooling section substantially consists of at least one water chamber equidistantly surrounding the casting and connected to at least one row of flat jet nozzles which are formed and arranged in such a manner that they spray fiat jets of high kinetic energy onto the surface of the casting.
  • These jets are intended continuously to extend axially along the entire length of said cooling section and substantially spaceless join up with each other in the area of impingement on the surface of the casting.
  • This invention relates to cooling devices, and more specifically to a device for cooling castings in continuous casting installations for heavy metals or alloys thereof, particularly steel.
  • the insufficient direct cooling effect obtained by spraying the surface of the casting with water is substantially due to the fact that the cooling water running off the surface of the casting shell is isolated immediately below the point of impingement of the water, in accordance with the known Leidenfrost-phenomenon, by a steam layer so that it is possible that in this regionup to the following nozzleonly insufficient cooling and, in some cases, even a re-heating of the casting shell may occur from within.
  • a cooling device so constructed that a cooling grate is arranged downstream of the copper casting die shortened in length, which cooling grate consists of narrow guide strips engaging with their free longitudinal edges the casting and arranged in spaced apart relationship so as to form gaps between neighboring guide strips of a width corresponding at least to the thickness of the guide strips, a water chamber surrounding the cooling grate and jet nozzles being connected in the gap regions between adjacent guide strips to the water chamber, said nozzles being designed, arranged and/ or distributed so that within the gaps they direct a high kinetic energy flat jet to the surface of the casting, said flat jet extending throughout the length of the cooling section and being of a breadth substantially narrower than the width of the gaps.
  • the kinetic energy of im pingement of the flat jets amounts at least to about 5 but preferably up to about 20 kp. m./ min. cm. Since the surface of the casting in the closely adjacent gap regions of the cooling grate is directly impinged by high kinetic energy flat jets along the whole length of the cooling section, an isolating steam layer is not allowed to form anywhere along the cooling section, it being particularly achieved that the flat jets can impinge with full power upon the surface of the casting owing to the fact that their breadth is smaller than the Width of the gaps, whereas the water which rebounds from the surface of the casting or which is deflected thereby is forced away by the fiat jets and flows off the side walls of the guide strips by virtue of adhesion.
  • the present invention provides a cooling device for castings in continuous casting installations for heavy metals or alloys thereof, particularly steel, which comprises a copper casting die serving as continuous mold to the interior of which a coolant is admitted for indirectly cooling a casting; a cooling section located downstream of the casting die and formed by at least one row of flat jet nozzles equidistantly surrounding the casting for directly spraying the coolant in the form of flat jets of high kinetic energy onto the surface of the casting, said jets continuously extending axially along the entire length of said cooling section and, neighboring in the circumferential direction of the casting, substantially spaceless joining up with each other in the area of impingement on the surface of the casting, and at least one water chamber communicating with said nozzles.
  • the present invention is preferably applied to castings of square cross sections it is naturally also applicable to castings having rectangular or polygonal cross sections.
  • the specific significance of the present invention is easily inferrable from the fact that, due to purely practical reasons, it is extremely difiicult especially in the case of polygonal cross sections to guide the casting shell satisfactorily in the area of the direct cooling section with the aid of mechanical means, apart from the fact that any mechanical guide means provided in the area of the direct cooling section automatically involve the disadvantage of excluding or at least considerably impairing the uniform impingement of the coolant on the casting shell.
  • roller guide means provided at the bottom end of the cooling section comprise only one guide roller on each side of the casting, but it goes without saying that several guide rollers in 4 spaced relationship to each other may be arranged, on each side of the casting, if desired.
  • roller guide means at the bottom end of the cooling section is particularly advisable in cases where the copper casting die and the following cooling section have about the same length, the length of the copper casting die corresponding to about twice the diameter or twice the edge length of the casting, respectively.
  • the copper casting die, the cooling section consisting of the flat jet nozzles connected to at least one water chamber and the guide roller means defining the cooling section at the lower end thereof are detachably assembled to form an independent unit.
  • FIG. 1 is a schematic view, partly in longitudinal section, of the upper end of a casting die
  • FIG. 2 is a perspective view, partly in section, of a cooling device according to the present invention.
  • FIG. 3 is a cross section through a cooling section serving for the direct cooling of a casting, taken on the line IIIIII of FIG. 1.
  • FIG. 1 shows a ladle 1 containing molten steel 2 which flows through an outlet 3 provided in the ladle 1 into a copper casting die 4 into the interior of which a coolant is fed.
  • the molten steel 2 is formed to a continuous casting 5 of square cross section, the outside of the casting 5 beginning to solidify due to the indirect cooling by the casting die 4.
  • the casting 5 emerges downwardly from the casting die 4 thereby entering a cooling section 6 wherein the casting 5 is cooled by being directly exposed to cooling water 7.
  • the cooling section 6 serving for directly cooling the casting 5 consists of at least one row of flat jet nozzles 9 distantly surrounding the casting 5 and connected to one or more Water chambers 8.
  • the flat jet nozzles 9 eject parallel flat jets extending continuously along the entire length of the cooling section 6 and by means of which the cooling water 7 is sprayed onto the casting 5 with a high kinetic energy.
  • the flat jet nozzles 9 are inclined with respect to the casting 5 in such a manner that by virtue of a spray angle of about 90, measured in the vertical, they are able to cool the casting 5 Within the cooling section 6 by means of the cooling Water 7 over its entire length.
  • roller guide means which in the preferred embodiment are embodied in the form of guide rollers 10.
  • These guide rollers 10 are rotatably mounted in holding devices 11.
  • the casting die 4, the water chambers 8 with the flat jet nozzles 9 and the holding devices 11 with their associated guide rollers 10 are assembled detachably from each other to form an independent unit.
  • FIG. 2 shows the spatial arrangement of the individual parts. For the sake of simplifying the drawing only two holding devices 11 are shown, whereas the other holding devices 11 have been omitted. Moreover, the casting die 4 is shown in longitudinal section so that cooling pipes 12 incorporated therein are visible.
  • FIG. 3 illustrates the disposition of the flat jet nozzles 9 equidistantly surrounding the casting 5 on all sides.
  • the water chambers 8 are about annularly disposed and receive the cooling water via admission pipes which are not shown.
  • the cross sections of flow of said admission pipes, of the water chambers 8 and of the flat jet nozzles 9 are so conformed to each other that the cooling water 7 is constantly sprayed onto the casting 5 with high kinetic energy, e.g. 15 kg. m./min. cm.
  • a casting die defining a cavity having an inlet end adapted to receive a stream of molten metal, and an outlet end downstream of said inlet end; indirect cooling means for cooling said die to at least partially solidify the molten metal in said cavity so that such metal issues from said outlet end in form of an elongated continuous ingot having an exposed circumferential surface and moving downstream from said outlet end in a predetermined path through and beyond an unobstructed cooling zone of substantial axial length; and direct cooling means surrounding said path in said cooling zone for directing against said ingot a plurality of narrow jets of cooling liquid having in direction longitudinally of said ingot a length corresponding to said substantial axial length, and in direction circumferentially of said ingot a width which is a fraction of said length, said jets impinging upon said surface with a kinetic energy of at least about 5 kp. m./unin. cm. over said substantial axial length of said zone and in side-by-side relationship but
  • roller guide means engaging said surface of said ingot only downstream of said cooling zone.
  • said jet nozzle means being constructed and arranged for directing against said ingot respective jets of cooling liquid whose kinetic energy of impingement upon said surface decreases gradually in direction downstream of said path.
  • said jet nozzle means comprising jet nozzles having slot-shaped outlet openings elongated in at least substantial parallelism with the axial length of said cooling zone.
  • said jet nozzle means comprising polydirectional jet nozzles.
  • conduit means communicating with said jet nozzle means for supplying said cooling liquid thereto.
  • said cavity having from said inlet end to said outlet end a longitudinal dimension which is at least substantially equal to said axial length of said cooling zone.
  • said cavity is of at least substantially circular cross-section; and wherein said longitudinal dimension is at least substantially equal to double the diameter of said cavity.
  • said cavity is of polygonal cross-section having a pre determined edge length; and wherein said longitudinal dimension is at least substantially equal to double said edge length.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
US762481A 1967-10-02 1968-09-25 Cooling device for castings in continuous casting installations for heavy metals or alloys thereof,particularly steel Expired - Lifetime US3572423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT892667A AT288614B (de) 1967-10-02 1967-10-02 Vorrichtung zum Kühlen des Gußstranges bei Stranggußanlagen für Schwermetalle oder deren Legierungen, insbesondere Stahl

Publications (1)

Publication Number Publication Date
US3572423A true US3572423A (en) 1971-03-23

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ID=3609687

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Application Number Title Priority Date Filing Date
US762481A Expired - Lifetime US3572423A (en) 1967-10-02 1968-09-25 Cooling device for castings in continuous casting installations for heavy metals or alloys thereof,particularly steel

Country Status (12)

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US (1) US3572423A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS4830813B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) AT288614B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE721712A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH494076A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1758667C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES358504A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI47729C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1581996A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1241682A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO123142B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE342397B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738629A (en) * 1971-03-04 1973-06-12 Dorn Co V Bar quench fixture
US4043384A (en) * 1976-10-13 1977-08-23 Georgetown Texas Steel Corporation Spray apparatus for continuous casting machine
US4220192A (en) * 1979-05-29 1980-09-02 Gladwin Kirk M Combined roller support and spray cooling system for continuous casting molds
US4603729A (en) * 1983-06-17 1986-08-05 Kabushiki Kaisha Kobe Seiko Sho Piping assembly for use in roll section of continuous casting line
US4936155A (en) * 1985-07-02 1990-06-26 Utah Transmission Corporation Infinite speed variation, constant power, ripple-free transmission
US20200122227A1 (en) * 2018-10-19 2020-04-23 Showa Denko K.K. Continuous casting apparatus for metal and continuous casting method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968703U (ja) * 1982-11-01 1984-05-10 富士重工業株式会社 汚水飛散防止装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641509A (en) * 1948-04-27 1953-06-09 Clyde E Yost Spray nozzle
US2747245A (en) * 1951-06-29 1956-05-29 Junghans Siegfried Process for continuous casting of metal billets
US2871529A (en) * 1954-09-07 1959-02-03 Kaiser Aluminium Chem Corp Apparatus for casting of metal
DE1142049B (de) * 1955-12-09 1963-01-03 Hans Joachim Fuchs Fa Verfahren und Vorrichtung zur Herstellung von aus stranggegossenen Bloecken und Barren gefertigten Werkstuecken
FR1138627A (fr) * 1955-12-16 1957-06-17 Electro Chimie Soc D Procédé pour le refroidissement des lingots obtenus en coulée continue des métaux, et lingotières pour la mise en oeuvre de ce procédé
AT246942B (de) * 1960-02-04 1966-05-10 Benteler Geb Paderwerk Verfahren und Einrichtung zur Herstelllung von als Halbzeug für die Herstellung von Bandmaterial und/oder Rohren geeigneten Brammen, Knüppeln, Platinen od. dgl. aus metallischen Schmelzen im Stranggußverfahren
CH384144A (de) * 1961-06-19 1964-11-15 Concast Ag Verfahren und Vorrichtung zum Kühlen von Stranggussmaterial in der Sekundärzone
CH412214A (de) * 1961-09-13 1966-04-30 Concast Ag Verfahren und Vorrichtung zum Kühlen von Stranggussmaterial
AT233186B (de) * 1961-09-13 1964-04-25 Concast Ag Einrichtung zum Kühlen von Stranggußmaterial

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738629A (en) * 1971-03-04 1973-06-12 Dorn Co V Bar quench fixture
US4043384A (en) * 1976-10-13 1977-08-23 Georgetown Texas Steel Corporation Spray apparatus for continuous casting machine
US4220192A (en) * 1979-05-29 1980-09-02 Gladwin Kirk M Combined roller support and spray cooling system for continuous casting molds
US4603729A (en) * 1983-06-17 1986-08-05 Kabushiki Kaisha Kobe Seiko Sho Piping assembly for use in roll section of continuous casting line
US4936155A (en) * 1985-07-02 1990-06-26 Utah Transmission Corporation Infinite speed variation, constant power, ripple-free transmission
US20200122227A1 (en) * 2018-10-19 2020-04-23 Showa Denko K.K. Continuous casting apparatus for metal and continuous casting method
JP2020062678A (ja) * 2018-10-19 2020-04-23 昭和電工株式会社 金属の連続鋳造装置および連続鋳造方法
JP7190324B2 (ja) 2018-10-19 2022-12-15 昭和電工株式会社 金属の連続鋳造装置および連続鋳造方法

Also Published As

Publication number Publication date
GB1241682A (en) 1971-08-04
CH494076A (de) 1970-07-31
FI47729C (fi) 1974-03-11
DE1758667B2 (de) 1973-02-08
DE1758667C3 (de) 1974-09-26
FI47729B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-11-30
BE721712A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-04-02
SE342397B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-02-07
ES358504A1 (es) 1970-05-01
FR1581996A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-09-19
DE1758667A1 (de) 1971-04-08
AT288614B (de) 1971-03-10
NO123142B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-10-04
JPS4830813B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-09-25

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Owner name: BENTELER AKTIENGESELLSCHAFT

Free format text: CHANGE OF NAME;ASSIGNOR:BENTELER-WERKE AKTIENGESELLSCHAFT;REEL/FRAME:004832/0460

Effective date: 19870901