US3877510A - Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern - Google Patents

Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern Download PDF

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Publication number
US3877510A
US3877510A US324541A US32454173A US3877510A US 3877510 A US3877510 A US 3877510A US 324541 A US324541 A US 324541A US 32454173 A US32454173 A US 32454173A US 3877510 A US3877510 A US 3877510A
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United States
Prior art keywords
spray
liquid coolant
nozzle body
nozzle
outlet opening
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US324541A
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English (en)
Inventor
Richard J Tegtmeier
Jimmy L Helms
Karl L Backhaus
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SMS Concast Inc
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Concast Inc
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Priority to US324541A priority Critical patent/US3877510A/en
Priority to AR19902074D priority patent/AR199020A1/es
Priority to AT26574A priority patent/AT342798B/de
Priority to SU7401985255A priority patent/SU579868A3/ru
Priority to JP745074A priority patent/JPS535848B2/ja
Priority to JP745274A priority patent/JPS534805B2/ja
Priority to JP744974A priority patent/JPS535847B2/ja
Priority to JP745174A priority patent/JPS535849B2/ja
Priority to CH43574A priority patent/CH564991A5/xx
Priority to BR74249A priority patent/BR7400249D0/pt
Priority to TR18001A priority patent/TR18001A/xx
Priority to CA190,223A priority patent/CA1028822A/en
Priority to ZA00740279A priority patent/ZA74279B/xx
Priority to NL7400511A priority patent/NL7400511A/xx
Priority to FI97/74A priority patent/FI55304C/fi
Priority to SE7400477A priority patent/SE400914B/xx
Priority to IT19447/74A priority patent/IT1003408B/it
Priority to DE19742401649 priority patent/DE2401649B2/de
Priority to AU64582/74A priority patent/AU473697B2/en
Priority to ES422534A priority patent/ES422534A1/es
Priority to FR7401481A priority patent/FR2213824B1/fr
Priority to BE139859A priority patent/BE809804A/xx
Priority to ES422533A priority patent/ES422533A1/es
Priority to GB211374A priority patent/GB1462642A/en
Priority to GB211474A priority patent/GB1462643A/en
Priority to US05/447,006 priority patent/US3935896A/en
Application granted granted Critical
Publication of US3877510A publication Critical patent/US3877510A/en
Assigned to SMS CONCAST INC. reassignment SMS CONCAST INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 08/08/1984 Assignors: CONCAST INCORPORATED
Assigned to SMS CONCAST INC. reassignment SMS CONCAST INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: CONCAST INCORPORATED
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/046—Outlets formed, e.g. cut, in the circumference of tubular or spherical elements
    • 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
    • B22D11/1246—Nozzles; Spray heads

Definitions

  • ABSTRACT A method of, and apparatus for, cooling a continuously cast strand, particularly a steel strand, in a secondary cooling zone of a continuous casting plant wherein a spray nozzle disposed at the region of at least two consecutively spaced guiding means produces a spray pattern of liquid coolant, typically water, which impinges the surface of the cast strand with a substantially uniform distribution of the coolant and a substantially uniform impingement force at least over the major portion of the transverse width dimension of such cast strand.
  • the invention further contemplates feeding the liquid coolant into the nozzle so as to flow initially essentially in the axial extent thereof and then to depart therefrom in a direction extending transversely with respect thereto to form such spray pattern of liquid coolant.
  • PATENTEDAPR 1 5197s APPARATUS FOR COOLING A CONTINUOUSLY CAST STRAND INCORPORATING COOLANT SPRAY NOZZLES PROVIDING CONTROLLED SPRAY PATTERN BACKGROUND OF THE INVENTION
  • the present invention relates to a new and improved method of, and apparatus for, cooling a continuously cast strand, particularly castings having a substantially rectangular cross-sectional configuration, and especially in a steel strand.
  • Continuous casting operations employ the technique of casting liquid metal into a cooled open-end mold, also known in the art as a continuous casting mold, and the cast strand formed therein is continuously withdrawn therefrom. After the casting has been withdrawn from the continuous casting mold, it has not as yet completely solidified, therefore additional heat must be removed at a secondary cooling zone.
  • a secondary cooling zone During the casting of strands of rectangular cross-section, for example blooms or slabs, it is conventional practice to spray water, functioning as a liquid coolant, in the form of flat spray patterns or fans onto the surface of the continuously cast strand.
  • a common practice in the art is to arrange a plurality of adjacently situated spray nozzles having a flat spraying characteristic in such a manner that the spray patterns or fans emanating from neighboring spray nozzles slightly overlap one another in order to strive to attain uniform cooling across the width of the continuously cast strand.
  • This prior art arrangement of spray nozzles which aims at providing a relatively uniform water distribution across the width of the continuously cast strand, can only operate over small transverse widths of the strand. As a result, only discrete surface portions across the width of the strand can be impinged by a single spray pattern or fan. Consequently, it is a requirement of this type of cooling system that a plurality of nozzles be arranged in respective rows across the width of the strand.
  • Another cooling arrangement of the state-of-the-art contemplates the use of only a single spray nozzle which is intended to spray the liquid coolant over the complete width of a slab.
  • a decisive drawback of this arrangement resides in the fact that owing to the characteristics of the conventionally employed nozzles, the density of the spray water and thus the cooling effect at the central region of the slab is much greater than at the outer regions or portions. Additionally, the impingement forces are not uniform and the actual area of impingement by the spray pattern follows the course of a curved line or are extending across the width of the slab. Moreover, the spray pattern or fan is not sharply defined, in fact, is unstable as the pressure varies.
  • Modern steel casting plants must be extremely versatile in operation and capable of producing a wide range of slab sections and qualities which, in turn, requires variations of the casting speed.
  • Metallurgical considerations make it incumbent to adapt the quantity of sprayed cooling water to the amount of heat intended to be removed within the secondary cooling zone, that is to say, as a function ofthe casting speed.
  • the amount of cooling water is controlled by the water pressure prior to entering the relevant spray nozzle. It is also desirable to maintain the distribution of the spray water as constant as possible.
  • the nozzles of conventional design heretofore emmployed in the cooling systems of the prior art continuous casting plants possess the drawback that as the pressure of the coolant varies, the spray water distribution also changes considerably and to a certain extent also the spray angle. Consequently, this again causes uncontrollable cooling of the continuously cast strand.
  • Another object of the present invention aims at simplifying the construction of a continuous casting plant by replacing the conventional design of plural spray nozzles arranged in respective rows across the strand transversely with respect to its longitudinal axis, by a single spray nozzle in each row.
  • a further object of the present invention is directed to the provision of a novel cooling nozzle for a continuous casting plant, which is simple in construction and design, extremely effective in providing substantially uniform cooling of the cast strand, affording a relatively large spray angle, and providing substantially uniform distribution of the coolant and an essentially constant impingement force over at least the major part of the transverse width dimension of the strand.
  • Another object of this invention is related to the provision of a new and improved construction of nozzle used in the cooling system of a continuous casting plant and providing a sharply defined spray pattern and an impingement area therefor defined by substantially straight parallel lines and which impingement area extends extensively perpendicular to the lengthwise axis of the strand across the width thereof.
  • a further object of this invention contemplates the provision of a new and improved construction of spray nozzle for the cooling system of a continuous casting plank which produces substantially uniform distribution and a substantially constant spray angle of the spray water over a wide range of coolant pressures and produces an essentially stable spray pattern over a wide range of spray angles.
  • Yet a further object of the present invention relates to an improved construction of spray nozzle for use in the cooling system of a continuous casting plant wherein the liquid coolant enters the nozzle in one direction and departs therefrom as a spray pattern in another direction with respect to the incoming flow direction of the coolant, which spray pattern has a large width in the direction of the strand width, but a small and substantially uniform thickness in the direction of the longitudinal axis of the strand.
  • the method of cooling a continu ously cast strand entails arranging one spray nozzle for liquid coolant at the region of two consecutive guiding means for the cast strand moving along a predetermined path of travel, and moving the cast strand along the predetermined path of travel defined by the spaced guiding means.
  • Liquid coolant is delivered to the spray nozzle and there is produced therefrom one substantially flat spray pattern which is directed towards the surface of the moving cast strand.
  • the flat spray pattern of liquid coolant impinges the strand at an impingement area which extends transversely across the surface of the cast strand, and with essentially uniform distribution of the coolant across at least the major portion or extent of the width of the cast strand, in order to substantially uniformly cool the strand across its transverse width dimension or extent.
  • a further aspect of the invention infeeds the liquid coolant into the spray nozzle in a first direction and has it depart therefrom in a second direction which differs from said first direction, typically to infeed the coolant in the lengthwise or axial flow direction of the nozzle and to have the liquid coolant depart therefrom in a direction transversely with regard to such lengthwise direction.
  • a still further aspect of the invention contemplates controlling the spray angle of the spray pattern or fan of coolant emerging from a single nozzle which acts across the transverse width of the strand.
  • cooling system for cooling a continuously cast strand in a secondary cooling zone of a continuous casting plant, which comprises, in combination, a series of consecutively arranged spaced guiding means for guiding the continuously cast strand along a predetermined path of travel.
  • a single nozzle is arranged at the region of at least two consecutively arranged guiding means for producing a substantially flat spray pattern or fan of liquid coolant across essentially the entire width of the cast strand with substantially uniform distribution ofliquid coolant across at least the major portion of the transverse width of the cast strand, and preferably with substantially uniform impingement force of the coolant also over at least the major part of its transverse width, in order to substantially uniformly cool the strand across its transverse width dimension.
  • Each such nozzle comprises a nozzle body member having an inflow means for the liquid coolant and an outflow means including a preferably slotted outlet opening for the discharge thereof.
  • the length of the slotted outlet opening for a given inner diameter of the nozzle body member controls the spray angle of the spray pattern or fan in a plane which extends substantially transversely across the width of the strand.
  • the inflow means and outflow means of the nozzle body member are arranged in relation to one another such that the inflow of liquid coolant through the nozzle body member towards the slotted outlet opening is in a direction which differs from the discharge of the liquid coolant out of the slotted outlet opening.
  • the inflow direction of the liquid coolant through the nozzle body member is essentially in the lengthwise or axial direction thereof whereas the outflow of the liquid coolant from the slotted outlet opening is in a transverse direction with respect to the lengthwise or axial direction of the nozzle body member, and essentially extends in radial direction with regard thereto.
  • the new cooling system of this development allows for a much simpler design of the continuous casting plant with respect to the secondary cooling zone through the beneficial substitution of the heretofore employed plurality of nozzles in a given row for cooling the casting by just a single nozzle capable of spraying over the entire or essentially the entire width of the cast strand.
  • an essentially uniform spray water density producing an essentially uniform distribution of the liquid coolant and a substantially constant impingement force at least over the major extent of the transverse width dimension thereof.
  • the cooling equipment of this invention allows maintaining the distance between two consecutive guiding means, typically guide rollers, at an absolute minimum inasmuch as the emanating spray pattern of coolant has a narrow sharply defined configuration and provides an impingement area bounded by substantially straight parallel lines extending transversely across the strand surface.
  • FIG. I is a fragmentary top plan view of a cooling system or apparatus designed in accordance with the teachings of the present invention for substantially uniformly cooling the surface of a continuously cast strand;
  • FIG. 2 is a cross-sectional view of the embodiment depicted in FIG. 1, taken substantially along the line II-II thereof;
  • FIG. 3 is an end view of the arrangement of FIG. 1, looking from the left side thereof, and depicting the spray pattern or fan emanating from each spray nozzle;
  • FIG. 4 is a partial longitudinal sectional view ofa first embodiment of nozzle construction for use for instance in the cooling system of FIGS. 1-3 inclusive;
  • FIG. 5 is a cross-sectional view of the nozzle depicted in FIG. 4, taken substantially along the line VV thereof;
  • FIG. 6 is-a bottom view of the nozzle of FIG. 4, the showing of FIG. 6 being turned 90 in vertical direction to facilitate the illustration thereof;
  • FIG. 7 is a fragmentary longitudinal sectional view of another embodiment of nozzle equipped with a modified construction of its end wall or terminal portion for use for instance in the cooling system of FIGS. 1-3;
  • FIG. 8 is a fragmentary longitudinal sectional view of a variant construction of nozzle for use for instance in the cooling system of FIGS. 1-3;
  • FIG. 9 illustrates a still further design of nozzle for use for instance in the cooling system of FIGS. 1-3.
  • FIGS. 10 and 11 illustrate a still further embodiment of nozzle for use for instance in the cooling system of FIGS. 1 to 3.
  • FIGS. 1 and 2 there is shown a portion of the secondary cooling zone of a continuous casting plant which incorporates longitudinally spaced guiding means, here in the form of'guide rollers 1 which define a path of travel for a continuously cast strand 2 within such secondary cooling zone.
  • the rollers 1 are typically located at opposite surfaces of the throughpassing continuously cast strand 2.
  • each spray nozzle 5 there is arranged at the region of each two consecutive neighboring guide rollers l a single spray nozzle 5 from which emanates a spray fan or pattern 3 of liquid coolant, usually water, which is directed between the associated neighboring guide rollers l, as best seen by referring to FIG. 3.
  • a spray fan or pattern 3 of liquid coolant usually water
  • Each such spray pattern impinges the confronting surface of the cast strand 2 at an impingement area 37 which is defined by substantially straight parallel lines and which impingement area extends essentially transversely across the strand and preferably covers the entire width thereof.
  • each spray fan or pattern 3 extensively moves into the associated roller gap between consecutive guide rollers 1.
  • the spray nozzles 5 which constitute an important part of the cooling system, and which will be disclosed in greater detail hereinafter in conjunction with FIGS. 4-11 inclusive, are connected in any convenient fashion, for instance through the use of coolant infeed conduits 8, with a common coolant feeder or distributor pipe 9, which, in turn, receives liquid coolant from a convenient supply source.
  • the common feeder or distributor pipe 9 constitutes a convenient means for supplying and distributing the liquid coolant to the individual spray nozzles 5 through the agency of their associated conduits 8.
  • the spray nozzles 5 are mounted at a certain distance, generally indicated by reference character 12 in FIG. 2, from the confronting surface of the cast strand 2, and this distance is selected as a function of the spray angle 13 so as to provide impingement of liquid coolant across the width of the strand.
  • the coolant spray pattern which emanates from the spray nozzle 5 in each case possesses a beneficial flat characteristic, for instance as indicated by phantom line 14 for the slab width 7, in other words, the density of the spray water and the distribution thereof at the impingement area of the cast strand is substantially uniform or constant at least over the major extent of the transverse width dimension thereof, and the strand is advantageously cooled in a uniform manner across its transverse width dimension.
  • the spray nozzles tend to generally produce an impingement force which is also substantially constant over at least the major transverse width dimension of the cast strand.
  • the spray pattern or fan 3 which impinges the surface of the cast strand 2 emerges from a slotted outlet opening of the associated spray nozzle 5 which will be described in greater detail hereinafter.
  • this slotted outlet opening is located in a plane which extends across the width of the cast strand and perpendicular to the lengthwise axis of such cast strand.
  • cooling water can be increased by appropriately adjusting the coolant or water pressure as is well known in this art. Purely by way of example it is here mentioned that the pressure of the coolant water has been adjusted over a range of approximately 10 psig to psig.
  • the spray characteristics do not essentially change throughout a relatively wide range of inlet water pressures, that is to say, the curve of the spray characteristics remains substantially rectangular over the width of the strand, wherefore it is possible to cool slabs of various cross-sections or chemical compositions with one and the same nozzle while producing substantially constant or uniform water distribution and substantially constant impingement force over at least the major extent of the transverse width of such slab.
  • the distributor infeed or supply pipe 9 together with the spray nozzles 5 can be selectively shifted towards or away from the surface of the continuously cast strand.
  • the distributor pipe 9 can be moved in both directions, as schematically indicated by the double-headed arrow 15 so as to assume a selectable spacing from the strand surface.
  • Each spray pattern or fan is sharply defined and passes between the guide rollers 1 without impinging or essentially impinging upon the guide rollers or producing uneven cooling due to a disturbed spray pattern.
  • the spray nozzle 5 incorporates a nozzle body member 20, for instance in the form of a tubular portion or nipple 21 closed at one end by a fixed end wall 22 and provided at the other end with a threaded portion 23 adapted to be connected with an associated conduit, such as the conduit 8 for the liquid coolant, water for instance, which is supplied by the distributor pipe 9.
  • the end wall 22 is shown formed integral with the tubular portion 21 of the nozzle body member 20.
  • inflow means incorporating an inlet opening 24 which communicates with an axially directed flow passageway or passage 26 which extends to the region of the end wall 22.
  • the axially directed flow passage 26 is bounded by the smooth inner wall 38 of the nozzle body member 20. Pressurized coolant is introduced through the inlet opening 24 and moves axially through the passage 26.
  • the nozzle 5 is also provided with outflow means incorporating a slotted outlet opening 29.
  • the tubular portion 21 is thus shown provided with a slotted outlet opening 29 which forms a discharge for the water emanating from the nozzle 5 in the form of a spray fan or pattern 3 having a large width in the direction of the strand width, but a small and uniform thickness in the direction of the longitudinal axis of the strand.
  • the fiow direction of the emerging water, as indicated by the arrow 30, will be recognized to be different from the flow direction 25 of the incoming water and its axial flow through the nozzle passage 26.
  • the flow directions will be seen to be essentially mutually perpendicular to one another, the incoming water flowing axially through the tubular portion 21 and the outflowing water extending transversely with regard thereto, and specifically substantially radially with respect to the axial flow direction through the tubular portion 21.
  • the outlet opening 29 has a substantially rectangular slot-like configuration and incorporates the wide boundary faces 31 and the narrow faces 32.
  • the smallest mutual distance 33 between the narrow faces 32, as indicated in FIG. 5, determines the spray angle 13 of the spray pattern in a direction transversely with respect to the strand withdrawal direction.
  • the nozzle is mounted in the cooling system in such a manner that the wide faces 31 of the slotted outlet opening 29 are located essentially perpendicular to the lengthwise axis of the cast strand and similarly essentially perpendicular to the lengthwise axis 34 of the tubular portion 21.
  • the spacing or distance 35 between the wide faces 31 defines the width or thickness 36 of the impingement area 37 of the spray pattern extending in the axial direction of the cast strand for a given spacing between the relevant nozzle and strand surface.
  • the cross-section of the slotted outlet opening 29 is smaller than the cross-section of the inlet opening 24.
  • tubular portion 21 of the nozzle body member 20 is closed at one end by a closure means, shown for instance in the form of the stationary or fixed end wall 22.
  • the inner surface 42 of this end wall 22 which comes into contact with the incoming water is spaced a certain distance, as indicated by reference character 43, from the slotted outlet opening 29 in order to form a cavity or chamber where there can occur a certain stowing or build-up and atten dant deceleration of the water.
  • FIG. 7 there is shown a somewhat modified construction of nozzle 5 from that depicted in FIGS. 46, wherein in this case the tubular portion 21 is closed by a movable end cap 44 threaded thereon.
  • this end cap 44 it is possible to vary the spacing 43 between the inner surface 42 of the closure means defined by such displaceable end cap and the slotted outlet opening 29. By varying such spacing, it is possible to appropriately incline the spray fan or pattern 3 with respect to the strand surface to a certain extent, if such is necessary.
  • FIG. 7 essentially corresponds to that of FIGS. 4-6, it differs to the extent that the closure means is in the form of an axially shiftable end cap 44.
  • FIG. 7 An actual arrangement for cooling a slab of thickness 9 inches and width 36 inches employed a spray nozzle of the type depicted in FIG. 7, mounted at a distance 12 from the surface of the slab which amounted to 18 inches.
  • This spray nozzle 5 was provided with a sub stantially rectangular slot or slotted outlet opening 29 which was milled or otherwise suitably formed at the nozzle body member consisting of a one-half inch nipple with an internal diameter of 0.625 inches.
  • the slot width in other words the spacing 35 between the wide faces 31 of the slotted outlet opening 29 amounted to 0.067 inches.
  • This nozzle operated with a spray angle of about 90.
  • the distance 43 of the surface 42 of the end closure wall 22 to the slot 29 was 1 inch.
  • the thickness 36 of the impingement area amounted to three-fourths inch. It was found that, in comparison to results which can be obtained with prior art constructions of nozzles, the water distribution and the impingement force were substantially quite uniform or constant at least over the major part of the transverse width dimension of the slab.
  • the spray nozzles of this development can be considered to provide substantially uniform water distribution and impingement force at the surface of the slab or casting.
  • FIG. 8 there is illustrated a further embodiment of spray nozzle 5 which to a large extent is similar to the construction of FIG. 7.
  • the movable end cap 44 of the embodiment of FIG. 7 is replaced by an axially shiftable piston-like plug 44 inserted into opening 40 of the tubular portion 21.
  • the plug 44 can be retained in desired position by any suitable fixing means, such as a screw 45.
  • the impingement or inner surface 42 of the plug 44 is curved, as shown.
  • FIG. 9 illustrates a variant construction of spray nozzle 5 which can be utilized in conjunction with the exemplary illustrated casting cooling system.
  • the nozzle 5 will be seen to again comprise a nozzle body member 20 in the form of a tubular portion or nipple 21 which is provided with a plug-like closure insert member 46.
  • the plug-like closure insert member 46 is provided with a machined bore 47 defining an axially extending throughflow passage 48 between the inlet opening 24 and the inner surface 42 of the end wall .22.
  • This plug-like closure insert member 46 is also provided with an outlet opening 52 for the efflux of the liquid coolant.
  • the tubular portion 21 of the nozzle surrounds the plug-like closure insert member 46 and such tubular portion 21 is provided with the slotted outlet opening 29 as above discussed.
  • the width 53 of the outlet opening 52 of the plug-like closure insert member 46 is greater in the axial extent thereof than the width 35 of the slotted outlet opening. 29 of the tubular portion or nipple 21, for reasons to be explained more fully hereinafter.
  • the angular extent or length .of such outlet opening 52 also may be advantageously greater in the circumferential direction of the insert member 46 than the angular extent or length of the slotted outlet opening 29 in the circumferential direction of the tubular portion 21, again for reasons to be explained more fully hereinafter.
  • nozzle 5 of FIG. 9 offers a number of notable advantages. Firstly, owing to the aforementioned different widths 53 and 35 of the openings 52 and 29 respectively, and by selectively axially shifting the tubular portion 21 in the direction of the lengthwise axis of the plug-like closure insert member 46, and relative to the outlet opening 52 thereof, it is possible to shift the pattern of the coolant spray so as to assume a desired position between the guide rollers l of the casting cooling system. In this way the coolant spray is directed at least for the most part into the intermediate space between each two neighboring guide rollers.
  • FIGS. and 11 there is depicted a still further constructional embodiment of spray nozzle 5 which to a large extent is similar to the nozzle construction of FIG. 8.
  • the axially shiftable piston-like plug 44" is provided with a flat inner surface 42 as opposed to the curved inner surface of the plug 44 of the embodiment of FIG. 8.
  • this embodiment of nozzle 5 is substantially identical to that discussed above with respect to FIG. 8, wherein however the fixing screw means 45 has been conveniently omitted from the showing of FIGS. 10 and 11 to simplify the illustration.
  • the spray pattern 3 While maintaining the same operating conditions but enlarging the spacing 43 to the order of one-eighth inch, it was found that the spray pattern 3 now is substantially linear i.e., bounded by substantially straight parallel lines but still appreciably laterally deviates or angles-off to one side of the plane 55 and the thickness 56 of the spray pattern in the lengthwise direction of the strand was exceedingly small. As this spacing 43 was increased to one-fourth inch, the aforementioned linear spray pattern 3 still predominantly deviated to one side of the central plane although a light coolant spray also appeared at the opposite side of such central plane 55. In this case the thickness 56 of the spray pattern 3 increased but the predominant amount of coolant was heavy at one side of the plane 55 and light at the opposite side thereof.
  • the spacing 43 plays a significant role not only upon the configuration of the spray pattern itself but also upon its spatial orientation and by maintaining such spacing so as to amount to at least one-half inch it is possible to produce a spray pattern which is substantially symmetrical with respect to the plane containing the central axis of the slotted outlet opening 29 and having a desired small and uniform thickness in the direction of the lengthwise or longitudinal axis of the casting.
  • the nozzle constructions depicted in FIGS. 7-11 afford the advantage that cleaning of such nozzles to free same, for instance, from mill scale, asbestos particles, or other foreign matter which might tend to collect, can be easily carried out since the closure member in each instance can be readily removed.
  • the nozzle body member may possess an internal diameter in the range of about 0.6 to 1.6 inches, a spacing 43 between the outlet opening 29 and the end closure wall or inner surface 42 of at least one-half inch, and typically in the range of about V2 to 4 inches, and a width 35 of the outlet opening 29 in the range of about 0.05 to 0.07 inches.
  • the spray angle 13 may be, for instance, in a range of 60 to
  • the cooling system as defined in claim 1, wherein the means closing the one end of the nozzle body member comprises a displaceable plug which can be positionally adjusted in the direction of the lengthwise axis of the nozzle body member, and means for fixing the plug in desired adjusted position.
  • nozzle body member possesses an internal diameter in the range of about 0.6 inches to 1.60 inches, and a width of the slotted outlet opening in the range of 0.05 to 0.07 inches.
  • a cooling system for cooling a continuously cast strand, especially a steel strand of essentially rectangular cross-sectional configuration comprising guide means for guiding a cast strand along a predetermined path of travel, at least one spray nozzle for producing a spray pattern of pressurized liquid coolant for impingement with the surface of the cast strand, said spray nozzle having inflow means for the pressurized liquid coolant and outflow means for the departure of said liquid coolant in the form of a spray pattern, said spray nozzle incorporating a nozzle body portion and means for closing the nozzle body portion at one end, means for connecting the opposite end of the nozzle body member with a supply infeed for the liquid coolant, said inflow means and outflow means of said spray nozzle providing respectively different flow directions for the liquid coolant, said outflow means incorporating means defining a substantially slotted outlet opening at said nozzle body member, said slotted outlet opening extending substantially transversely with respect to the lengthwise axis of the cast strand, said slotted outlet opening defining a discharge for the liquid coolant
  • a cooling system for cooling a continuously cast strand, especially a steel strand of essentially rectangular cross-sectional configuration comprising guide means for guiding a cast strand along a predetermined path of travel, at least one spray nozzle for producing a spray pattern of pressurized liquid coolant for impingement with the surface of the cast strand, said spray nozzle having inflow means for the pressurized liquid coolant and outflow means for the departure of said liquid coolant in the form of a spray pattern, said spray nozzle incorporating a nozzle body portion and means for closing the nozzle body portion at one end, means for connecting the opposite end of the nozzle body member with a supply infeed for the liquid coolant, said inflow means and outflow means of said spray nozzle providing respectively different flow directions for the liquid coolant, said outflow means incorporating means defining a substantially slotted outlet opening at said nozzle body member, said slotted outlet opening extending substantially transversely with respect to the lengthwise axis of the cast strand, said slotted outlet opening defining a discharge for the liquid coolant
  • said outflow means incorporating means defining a substantially slotted outlet opening at-said nozzle body member, said slotted outlet opening extending substantially transversely with respect to the lengthwise axis of the cast strand, said slotted outlet opening defining a discharge for the liquid coolant in the form of said spray pattern, said liquid coolant impinging the surface ofthe cast strand over an impingement area, to produce substantially uniform cooling of the cast strand over its transverse width dimension, and wherein the distribution of liquid coolant is substantially uniform across at least the major extent of said impingement area, said slotted outlet opening comprises a slot possessing a substantially rectangular configuration, said slot being bounded by faces extending substantially perpendicular to the lengthwise axis of the cast strand and the lengthwise axis of the nozzle body member and serving to control the thickness of the spray pattern and the impingement area for a given distance between said slotted outlet opening ofthe
  • the cooling system as defined in claim 1, wherein the means closing the one end of the nozzle body member comprises a displaceable plug which can be positionally adjusted in the direction of the lengthwise axis of the nozzle body member, and means for. fixing the plug in desired adjusted position.
  • a cooling system for cooling a continuously cast strand, especially a steel strand of essentially rectangular cross-sectional configuration comprising guide means for guiding a cast strand along a predetermined path of travel, at least one spray nozzle for producing a spray pattern of pressurized liquid coolant for impingement with the surface of the cast strand.
  • said spray nozzle having inflow means for the pressurized liquid coolant and outflow means for the departure of said liquid coolant in the form of a spray pattern, said spray nozzle incorporating a nozzle body portion and means for closing the nozzle body portion at one end, means for connecting the opposite end of the nozzle body member with a supply infeed for.
  • said outflow means incorporating means defining a substantially slotted outlet opening at said nozzle body member, said slotted outlet opening extending substantially transversely with respect to the lengthwise axis of the cast strand, said slotted outlet opening defining a discharge for the liquid coolant in the form of said spray pattern, said liquid coolant impinging the surface of the cast strand over an impingement area, to produce substantially uniform cooling of the cast strand over its transverse width dimension, and wherein the distribution of liquid coolant is substantially uniform across at least the major extent of said impingement area, said slotted outlet opening comprises a slot possessing a substantially rectangular configuration, said slot being bounded by faces extending substantially perpendicular to the lengthwise axis of the cast strand and the lengthwise axis of the nozzle body member and serving to control the thickness of the spray pattern and the impingement area for a given distance between said slotted outlet opening of the nozzle and the surface
  • a cooling system for cooling a continuously cast strand, especially a steel strand of essentially rectangular cross-sectional configuration comprising guide means for guiding a cast strand along a predetermined path of travel, at least one spray nozzle for producing a spray pattern of pressurized liquid coolant for impingement with the surface of the cast strand, said spray nozzle having inflow means for the pressurized liquid coolant andoutflow means for the departure of said liquid coolant in the form of a spray pattern, said spray nozzle incorporating a nozzle body portion and means for closing the nozzle body portion at one end, means for connecting the opposite end of the nozzle Page 3 l 6 body member with a supply iltfeed for the liquid coolant, said inflow means'and outflow means of said spray nozzle providing respectively different flow directions for the liquid coolant, said outflow means incorporating means defining a substantially slotted outlet opening at said nozzle body member, said slotted outlet opening extending substantially transversely with respect to the lengthwise axis of the cast strand, said slotted outlet opening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Nozzles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
US324541A 1973-01-16 1973-01-16 Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern Expired - Lifetime US3877510A (en)

Priority Applications (26)

Application Number Priority Date Filing Date Title
US324541A US3877510A (en) 1973-01-16 1973-01-16 Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern
AR19902074D AR199020A1 (es) 1973-01-16 1974-01-01 Tobera pulverizadora preferentemente para el enfriamiento de barras continuas y un procedimiento para el enfriamiento de barras continuas particularmente en el proceso de colada continua de acero
SU7401985255A SU579868A3 (ru) 1973-01-16 1974-01-14 Форсунка
JP745074A JPS535848B2 (es) 1973-01-16 1974-01-14
JP745274A JPS534805B2 (es) 1973-01-16 1974-01-14
JP744974A JPS535847B2 (es) 1973-01-16 1974-01-14
JP745174A JPS535849B2 (es) 1973-01-16 1974-01-14
CH43574A CH564991A5 (es) 1973-01-16 1974-01-14
AT26574A AT342798B (de) 1973-01-16 1974-01-14 Spruhduse zum kuhlen eines stranges beim stranggiessen
SE7400477A SE400914B (sv) 1973-01-16 1974-01-15 Sett att kyla en streng i rorelse och anordning for utovning av settet
CA190,223A CA1028822A (en) 1973-01-16 1974-01-15 Method of cooling a continuous casting and a spray nozzle
ZA00740279A ZA74279B (en) 1973-01-16 1974-01-15 A method of cooling a continuous casting, and a spray nozzle
NL7400511A NL7400511A (es) 1973-01-16 1974-01-15
FI97/74A FI55304C (fi) 1973-01-16 1974-01-15 Foerfarande foer kylning av en straeng, saerskilt vid straenggjutning av staol, och anordning foer tillaempande av foerfarandet
BR74249A BR7400249D0 (pt) 1973-01-16 1974-01-15 Processo para arrefecimento de um lingote continuo ou em cordao, bem como tubeira de borrifacao
IT19447/74A IT1003408B (it) 1973-01-16 1974-01-15 Procedimento per raffreddare una barra e ugello di spruzzatura in particolare durante la colata con tinua di acciai
DE19742401649 DE2401649B2 (de) 1973-01-16 1974-01-15 Verfahren zum kuehlen eines stranges und spruehduese
TR18001A TR18001A (tr) 1973-01-16 1974-01-15 Bir kitlenin sogutulmansina mashsus usul ve pueskuertme memesi
GB211474A GB1462643A (en) 1973-01-16 1974-01-16 Method of cooling a continuous casting
ES422534A ES422534A1 (es) 1973-01-16 1974-01-16 Tobera pulverizadora para el enfriamiento de barras conti- nuas.
FR7401481A FR2213824B1 (es) 1973-01-16 1974-01-16
BE139859A BE809804A (fr) 1973-01-16 1974-01-16 Procede et pulverisateur ppur le refroidissement d'une barre
ES422533A ES422533A1 (es) 1973-01-16 1974-01-16 Procedimiento para el enfriamiento de una barra continua.
GB211374A GB1462642A (en) 1973-01-16 1974-01-16 Apparatus for secondary cooling of a continuous casting
AU64582/74A AU473697B2 (en) 1973-01-16 1974-01-16 A method of cooling a continuous casting, anda spray nozzle
US05/447,006 US3935896A (en) 1973-01-16 1974-02-28 Method for cooling a continuously cast strand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US324541A US3877510A (en) 1973-01-16 1973-01-16 Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/447,006 Division US3935896A (en) 1973-01-16 1974-02-28 Method for cooling a continuously cast strand

Publications (1)

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US3877510A true US3877510A (en) 1975-04-15

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ID=23264039

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US324541A Expired - Lifetime US3877510A (en) 1973-01-16 1973-01-16 Apparatus for cooling a continuously cast strand incorporating coolant spray nozzles providing controlled spray pattern

Country Status (20)

Country Link
US (1) US3877510A (es)
JP (4) JPS535847B2 (es)
AR (1) AR199020A1 (es)
AT (1) AT342798B (es)
AU (1) AU473697B2 (es)
BE (1) BE809804A (es)
BR (1) BR7400249D0 (es)
CA (1) CA1028822A (es)
CH (1) CH564991A5 (es)
DE (1) DE2401649B2 (es)
ES (2) ES422533A1 (es)
FI (1) FI55304C (es)
FR (1) FR2213824B1 (es)
GB (2) GB1462642A (es)
IT (1) IT1003408B (es)
NL (1) NL7400511A (es)
SE (1) SE400914B (es)
SU (1) SU579868A3 (es)
TR (1) TR18001A (es)
ZA (1) ZA74279B (es)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924812A (en) * 1973-10-04 1975-12-09 Sumitomo Metal Ind Apparatus for supporting and guiding slab in the secondary cooling zone of continuous casting machine
US3974964A (en) * 1974-08-08 1976-08-17 Cotton Incorporated Liquid atomizing method and apparatus
US3981347A (en) * 1974-04-26 1976-09-21 Concast Ag Method and apparatus for strand cooling with a flat spray pattern
US3989093A (en) * 1974-03-18 1976-11-02 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Continuous casting plant for slabs
US3991942A (en) * 1974-01-17 1976-11-16 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Long-range nozzle
US4028906A (en) * 1975-07-14 1977-06-14 Charles E. Upchurch Fogging device for cooling a condenser coil
US4047985A (en) * 1976-02-09 1977-09-13 Wean United, Inc. Method and apparatus for symmetrically cooling heated workpieces
US4232629A (en) * 1978-07-13 1980-11-11 Phillips Petroleum Company Dispensing nozzle
US4235280A (en) * 1979-01-22 1980-11-25 Concast Incorporated Spray nozzle for cooling a continuously cast strand
US4320072A (en) * 1981-02-27 1982-03-16 Ecodyne Corporation Cooling tower spray nozzle
US4659016A (en) * 1983-05-11 1987-04-21 Slautterback Corporation Hot-melt dispenser with aimable nozzles
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
US6374901B1 (en) 1998-07-10 2002-04-23 Ipsco Enterprises Inc. Differential quench method and apparatus
US20180030678A1 (en) * 2016-08-01 2018-02-01 Specialized Pavement Marking, Inc. Striping apparatus
US9988763B2 (en) 2014-11-12 2018-06-05 First Quality Tissue, Llc Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same
US9995005B2 (en) 2012-08-03 2018-06-12 First Quality Tissue, Llc Soft through air dried tissue
US10099425B2 (en) 2014-12-05 2018-10-16 Structured I, Llc Manufacturing process for papermaking belts using 3D printing technology
US10208426B2 (en) 2016-02-11 2019-02-19 Structured I, Llc Belt or fabric including polymeric layer for papermaking machine
US10273635B2 (en) 2014-11-24 2019-04-30 First Quality Tissue, Llc Soft tissue produced using a structured fabric and energy efficient pressing
US10301779B2 (en) 2016-04-27 2019-05-28 First Quality Tissue, Llc Soft, low lint, through air dried tissue and method of forming the same
US10422082B2 (en) 2016-08-26 2019-09-24 Structured I, Llc Method of producing absorbent structures with high wet strength, absorbency, and softness
US10422078B2 (en) 2016-09-12 2019-09-24 Structured I, Llc Former of water laid asset that utilizes a structured fabric as the outer wire
US10538882B2 (en) 2015-10-13 2020-01-21 Structured I, Llc Disposable towel produced with large volume surface depressions
US10544547B2 (en) 2015-10-13 2020-01-28 First Quality Tissue, Llc Disposable towel produced with large volume surface depressions
US10619309B2 (en) 2017-08-23 2020-04-14 Structured I, Llc Tissue product made using laser engraved structuring belt
US11098453B2 (en) 2019-05-03 2021-08-24 First Quality Tissue, Llc Absorbent structures with high absorbency and low basis weight
US11220394B2 (en) 2015-10-14 2022-01-11 First Quality Tissue, Llc Bundled product and system
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US11505898B2 (en) 2018-06-20 2022-11-22 First Quality Tissue Se, Llc Laminated paper machine clothing
US11583489B2 (en) 2016-11-18 2023-02-21 First Quality Tissue, Llc Flushable wipe and method of forming the same
US11697538B2 (en) 2018-06-21 2023-07-11 First Quality Tissue, Llc Bundled product and system and method for forming the same
US20230219130A1 (en) * 2020-07-22 2023-07-13 Novelis Inc. Direct chill casting mold system
US11738927B2 (en) 2018-06-21 2023-08-29 First Quality Tissue, Llc Bundled product and system and method for forming the same
US11751728B2 (en) 2020-12-17 2023-09-12 First Quality Tissue, Llc Wet laid disposable absorbent structures with high wet strength and method of making the same
US11952721B2 (en) 2022-06-16 2024-04-09 First Quality Tissue, Llc Wet laid disposable absorbent structures with high wet strength and method of making the same
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JPS50102525A (es) * 1974-01-17 1975-08-13
DE2612175C3 (de) * 1976-03-23 1980-03-13 Westfaelische Metall Industrie Kg, Hueck & Co, 4780 Lippstadt Düse zum tropfenweisen Aufbringen von Waschflüssigkeit auf eine Waschstelle
DE2636666C2 (de) * 1976-08-14 1978-06-29 Demag Ag, 4100 Duisburg Spritzdüsen-Anordnung für Metall-, insbesondere für StahlstranggieBanlagen für extrem breite Stahlbrammen
JPS5327265U (es) * 1976-08-17 1978-03-08
JPS53157417U (es) * 1977-05-18 1978-12-09
JPS54114106U (es) * 1978-01-30 1979-08-10
NL181451C (nl) * 1980-05-08 1987-08-17 Hoogovens Groep Bv Inrichting voor het beinvloeden van de stroming van een gas.
GB2122920B (en) * 1982-06-26 1985-09-25 Smiths Industries Plc Improvements relating to spray nozzles
DE3425092A1 (de) * 1984-07-07 1986-02-06 SMS Schloemann-Siemag AG, 4000 Düsseldorf Verfahren und vorrichtung zum kuehlen von kontinuierlich gefoerderten giessstraengen in einer stranggiessanlage
EP0245722A3 (de) * 1986-05-13 1988-03-02 Concast Service Union Ag Verfahren zum Besprühen von Strängen
JPH0638605Y2 (ja) * 1988-06-08 1994-10-12 新日本製鐵株式会社 搬送用ローラの冷却液噴霧装置
AT410187B (de) * 2001-02-20 2003-02-25 Voest Alpine Ind Anlagen Kühlvorrichtung für ein heisses langgestrecktes metallgut

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Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924812A (en) * 1973-10-04 1975-12-09 Sumitomo Metal Ind Apparatus for supporting and guiding slab in the secondary cooling zone of continuous casting machine
US3991942A (en) * 1974-01-17 1976-11-16 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Long-range nozzle
US3989093A (en) * 1974-03-18 1976-11-02 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Continuous casting plant for slabs
US3981347A (en) * 1974-04-26 1976-09-21 Concast Ag Method and apparatus for strand cooling with a flat spray pattern
US3974964A (en) * 1974-08-08 1976-08-17 Cotton Incorporated Liquid atomizing method and apparatus
US4028906A (en) * 1975-07-14 1977-06-14 Charles E. Upchurch Fogging device for cooling a condenser coil
US4047985A (en) * 1976-02-09 1977-09-13 Wean United, Inc. Method and apparatus for symmetrically cooling heated workpieces
US4232629A (en) * 1978-07-13 1980-11-11 Phillips Petroleum Company Dispensing nozzle
US4235280A (en) * 1979-01-22 1980-11-25 Concast Incorporated Spray nozzle for cooling a continuously cast strand
US4320072A (en) * 1981-02-27 1982-03-16 Ecodyne Corporation Cooling tower spray nozzle
US4659016A (en) * 1983-05-11 1987-04-21 Slautterback Corporation Hot-melt dispenser with aimable nozzles
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
US6374901B1 (en) 1998-07-10 2002-04-23 Ipsco Enterprises Inc. Differential quench method and apparatus
US9995005B2 (en) 2012-08-03 2018-06-12 First Quality Tissue, Llc Soft through air dried tissue
US10570570B2 (en) 2012-08-03 2020-02-25 First Quality Tissue, Llc Soft through air dried tissue
US10190263B2 (en) 2012-08-03 2019-01-29 First Quality Tissue, Llc Soft through air dried tissue
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US20180030678A1 (en) * 2016-08-01 2018-02-01 Specialized Pavement Marking, Inc. Striping apparatus
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US20230219130A1 (en) * 2020-07-22 2023-07-13 Novelis Inc. Direct chill casting mold system
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Also Published As

Publication number Publication date
FI55304B (fi) 1979-03-30
TR18001A (tr) 1976-08-20
AR199020A1 (es) 1974-07-31
JPS534805B2 (es) 1978-02-21
FR2213824A1 (es) 1974-08-09
BR7400249D0 (pt) 1974-08-22
DE2401649B2 (de) 1976-09-16
GB1462643A (en) 1977-01-26
JPS49102527A (es) 1974-09-27
ES422533A1 (es) 1976-05-01
ATA26574A (de) 1976-05-15
JPS535847B2 (es) 1978-03-02
ES422534A1 (es) 1976-05-01
AU473697B2 (en) 1976-07-01
JPS49102528A (es) 1974-09-27
SU579868A3 (ru) 1977-11-05
BE809804A (fr) 1974-07-16
CA1028822A (en) 1978-04-04
DE2401649A1 (de) 1974-07-18
AU6458274A (en) 1975-07-17
CH564991A5 (es) 1975-08-15
JPS49102526A (es) 1974-09-27
GB1462642A (en) 1977-01-26
FI55304C (fi) 1979-07-10
ZA74279B (en) 1975-01-29
IT1003408B (it) 1976-06-10
SE400914B (sv) 1978-04-17
AT342798B (de) 1978-04-25
FR2213824B1 (es) 1980-04-11
JPS535849B2 (es) 1978-03-02
JPS49102525A (es) 1974-09-27
JPS535848B2 (es) 1978-03-02
NL7400511A (es) 1974-07-18

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