EP0353293A1 - Appareil et procede servant au coulage direct d'une feuille de metal. - Google Patents

Appareil et procede servant au coulage direct d'une feuille de metal.

Info

Publication number
EP0353293A1
EP0353293A1 EP89902493A EP89902493A EP0353293A1 EP 0353293 A1 EP0353293 A1 EP 0353293A1 EP 89902493 A EP89902493 A EP 89902493A EP 89902493 A EP89902493 A EP 89902493A EP 0353293 A1 EP0353293 A1 EP 0353293A1
Authority
EP
European Patent Office
Prior art keywords
top roll
chill
strip
molten metal
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89902493A
Other languages
German (de)
English (en)
Other versions
EP0353293B1 (fr
EP0353293A4 (fr
Inventor
Leroy Honeycutt Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reynolds Metals Co
Original Assignee
National Aluminum Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Aluminum Corp filed Critical National Aluminum Corp
Priority to AT89902493T priority Critical patent/ATE89771T1/de
Publication of EP0353293A1 publication Critical patent/EP0353293A1/fr
Publication of EP0353293A4 publication Critical patent/EP0353293A4/fr
Application granted granted Critical
Publication of EP0353293B1 publication Critical patent/EP0353293B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels

Definitions

  • This invention relates to continuous direct casting of metal strip by a process employing a moving chill surface upon which molten metal is flowed for solidi- cation beginning on the chill surface and progressing in a direction outwardly to the free top surface of the strip formed.
  • Figures 2, 8 and 9 of this patent disclose rolls 28 and 106 contacting the top surface of a stream of molten metal issuing from a nozzle in the bottom of a tundish, with the roll acting as a metering valve to control the size of the nozzle opening and hence the rate of flow of molten metal onto the chill surface.
  • Figures 5 and 6 of this patent disclose the use of rolls 36 and 36a which act on the top surface of the formed, or solidified strip. All the rolls contacting the top surface, i.e., rolls 28, 36, 36a and 106 are preferably internally cooled as by flowing water therethrough so that the rolls aid in solidification of the molten metal.
  • Japanese published patent application No. 1983-41656 discloses apparatus for direct ⁇ ly casting thin metal strip in which molten metal is supplied from a suitable source such as a ladle and maintained at a uniform level in an open tundish having one wall defined by a large cylindrical casting wheel which is internally cooled by a circulating cooling fluid.
  • the casting wheel is rotated in a direction to move its surface in contact with the molten metal in the tundish upwardly while heat is extracted through the chill surface to progressively form a strip 9 having a thickness "T" as the strip emerges from the top of the molten metal pool in the tundish.
  • a water cooled top roll 10 is positioned to engage the top surface of the solidified strip and reduce the strip to a thickness "t" by a hot rolling action. Liquid sprayed on the emerging strip assures a solidified top surface before contact with the top roll.
  • top roll of the type disclosed in the prior art in contact with the formed or forming strip moving on a primary chill surface.
  • a cooled top roll is employed in contact with molten metal as disclosed in the above-mentioned Japanese patent and the European patent application
  • the top surface to solidify on contact with the chilled surface and to adhere to the surface in the same manner as the bottom strip surface adheres to the primary chill.
  • this bond between the top strip surface and the cooled top roll may be only brief and broken more readily as a result of the relatively small radius of the top roll, cast sheet defects nevertheless result.
  • a primary object of the present invention to provide a novel process of and apparatus for producing directly cast thin metal strip in a high speed commercial operation. Another object is to provide such a process and apparatus to produce a directly cast thin metal strip having an improved transverse profile and more uniform longitudinal shape.
  • Another object of the invention is to provide such a process and apparatus having a smooth uniform top surface substantially free from transverse cracks.
  • a melt of the metal to be cast is brought into contact with a continuously moving chill to solidify a strip of substantially uniform thickness on the chill surface, and the strip is removed from the chill after solidifi ⁇ cation is substantially complete.
  • the chill may be an internally cooled cylindrical casting wheel and the process will be described herein with specific reference to apparatus using such a chill, it being understood that other chill configurations may also be employed.
  • the preferred embodiment of the invention described in detail hereinbelow employs a cylindrical chill positioned to effectively form one end wall of a tundish or other container for a melt of the metal to be cast and rotated in a direction to move the chill surface upwardly through and out of the melt.
  • a top roll positioned to have its surface in fixed spaced relation to the surface of the chill is supported for rotation about an axis parallel to the axis of the driven cylindrical chill.
  • the top roll is positioned to engage liquid-metal moving with the top of the solidified portion of the strip while avoiding any contact with the solidified portion of the strip.
  • a thin layer or film of molten metal passes beneath the top roll, and the top roll may be shaped to produce the desired cross sectional dimensions for the strip being formed.
  • the roll is uncooled and preferably is maintained at a temperature at least equal to the lowest solidification temperature of the metal or alloy being cast. This assures freedom of the film of molten metal to move both longitudinally and transversely of the moving strip to produce a uniform, smooth top surface defined by the liquid film exiting the nip of the top roll.
  • Fig. 1 is a schematic view, in elevation and partially in section, of a direct strip casting apparatus embodying the principles of the present invention
  • Fig. 2 is a plan view of a portion of the apparatus shown in Fig. 1;
  • Fig. 3 is an elevation view, partially in section, taken along line 3-3 of Fig. 2;
  • Fig. 4 is an elevation view of a top roll used with the apparatus of the present invention
  • Fig. 5 is a sectional view, on an enlarged scale, of a portion of the roll shown in Fig. 4;
  • Fig. 6 is an enlarged sectional view taken along lines 6-6 of Fig. 4;
  • a melt drag strip casting apparatus suitable for use in the practice of the present invention is illustrated schematically in Figs . 1 and 2 and designated generally by the reference numeral 10.
  • the apparatus includes a chill 12 in the form of a cylindrical casting wheel or drum having a cooled cylindrical outer surface 14 upon which the metallic strip 16 is cast.
  • a tundish assembly 18 is supported in close proximity to the casting wheel 12 in position to supply molten metal 20 contained therein at a uniform depth into contact with the chill surface 14.
  • Casting wheel 12 is internally cooled with circu ⁇ lating water or other cooling fluid which rapidly ex ⁇ tracts heat through surface 14 to thereby quench and solidify liquid metal from the melt 20 as the casting surface 14 rotates upwardly through the melt in tundish 18.
  • Suitable means such as journal bearings 22 support the chill 12 for rotation about a fixed horizontal axis on a rigid support frame indicated generally by the reference numeral 24.
  • the chill is supported in close proximity to tundish 18, and suitable drive means such as a variable speed motor and reduction gear mechanism 26 and a drive chain or belt 28 illustrated schematically in Fig. 1 are provided to drive the chill about its fixed horizontal axis.
  • suitable coiling assembly of conventional design, illustrated schematically at 30, may be provided to continuously coil the strip 16 as it is discharged from the continuous casting assembly.
  • a rotary brush 32 is mounted for rotation on a shaft 34 having its longitudinal axis parallel to the axis of rotation of the chill 12.
  • Brush 32 is supported by suitable brackets 36 and driven, as by belt 38, from motor and reduction gear assembly 26 to continuously engage and polish the surface 14.
  • the brush assembly, and the polishing effect to maintain the uniform oxide coating on the surface 14 are described in detail in copending U.S. patent application Serial No. 07/263,074, filed October 27, 1988 and assigned to the assignee of the
  • the tundish assembly 18 includes a floor 40 and laterally spaced, upwardly extending sidewalls 42, 44, a rear end wall 46 and an open exit end effectively closed by chill surface 14.
  • Bottom wall 40 terminates at the open end of the tundish in a contoured lip 48 best seen in Figs. 3 and 7.
  • Molten metal is supplied to the tundish 18 from a receiving chamber 50 and level equalizing chamber 52 through a submerged inlet port 54 in end wall 46.
  • Molten metal may be supplied to the receiving chamber 50 by any suitable means such as a ladle or a hot metal transfer system from a melting furnace.
  • molten metal flowing into the tundish 18 through inlet opening 54 engages a central baffle 56 which is generally V-shaped in top plan view and which is disposed with the apex of the V directed toward and spaced from the inlet 54.
  • molten metal flowing into the tundish is divided and diverted toward the sidewalls 42, 44 to minimize channeling and to produce a more uniform flow and temperature of metal reaching the chill surface 14.
  • a pair of diagonal walls 58, 60 extend between end wall 46 and sidewalls 42, 44 respectively, with the walls 58, 60 extending in outwardly diverging relation from the end wall 46.
  • a transverse dam or wall 66 extends between sidewalls 42 and 44 at a position downstream of the V-shaped baffle 56.
  • Divider wall 66 has its bottom edge spaced above the top surface of bottom wall 40 and a submerged flow diffuser screen or filter 68 extends between the wall
  • a movable flow control gate 70 is supported for vertical sliding movement in tundish 18 at a location between the divider wall 66 and lip 48 as best seen in Fig. 3.
  • Gate 70 is guided in suitable channels on the inner surface of walls 42, 44 for movement between a raised casting position in which the gate is out of contact with the molten metal in the tundish and a lowered' position in contact with the top surface of bottom wall 40 to stop the flow of molten metal to the open end of the tundish.
  • a removable hood or cover may be provided above the open top of the tundish and an atmosphere of inert gas such as nitrogen or argon supplied beneath the hood.
  • a pair of gas distribution manifolds 72 and 74 may be provided in the tundish as shown in Fig. 2.
  • a tundish of this general type is disclosed in U.S. Patent Application Serial No. 07/179,536, filed April 8, 1988.
  • a top roll assembly 80 is supported for rotation about a horizontal axis parallel to the axis of chill 12 at a location near the top surface of the molten metal 20 in the tundish and the point of emergence from the melt of the strip of metal being cast during the casting operation.
  • Mounting means is provided for supporting the top roll assembly for adjustment vertically and horizontally to adjust the axis of the roll 80 relative to the parallel axis of the chill 12.
  • the adjustable mounting means for roll 80 is illustrated schematically in Fig.
  • the roll assembly 80 includes an elongated cylindrical tubular sleeve 88 having a smooth outer surface 90 for contacting molten metal moving with the strip being cast in the manner described more fully hereinbelow.
  • Tubular sleeve 88 is provided with a counterbore at each end, forming a seat for receiving a short cylindrical bushing member 92, only one of which is shown in Fig. 4, it being understood that the other end of the roll assembly may be substantially identical to the end portion shown in Fig. 4.
  • the sleeve 88 and bushings 92 are supported on and keyed to an elongated shaft 94 for rotation therewith.
  • Shaft 94 is provided with a reduced diameter bearing portion 96 adjacent each end, an intermediate diameter bushing support portion 98 spaced inwardly from the bearing sections 96, and a central portion of maximum diameter.
  • a shoulder 100 at the juncture of the bushing support portion and central portion is adapted to engage the end of the bushings 92 when the bushings are in ⁇ stalled in the sleeve 88 to axially fix the sleeve on the shaft.
  • Bushings 92 are permanently joined by a suitable high temperature bonding " agent or other suitable means to the inner surface of the counterbore in the sleeve 88 so that the complete assembly rotates as a unit.
  • One of the bushings 92 may be bonded in the end of sleeve 88 prior to assembly, with the second bushing 92 being inserted and bonded after assembly with the shaft 94.
  • a suitable retaining ring 108 may be provided in position to engage the exposed end of the bushing 92 to permit handling of the assembly until bonding of the bushing and sleeve is completed.
  • the outwardly projecting bearing sections 96 of shaft 94 are mounted in suitable bearings on the bracket 86, and the bracket is adjusted to accurately position the roll relative to the chill surface 14.
  • the roll may be supported for free rotation or driven in the same rotational direction on the chill 12, but preferably is driven in a direction opposite to the chill.
  • the top roll will normally be driven at a rate such that the surface speed of chill surface 14 and roll surface 90 are substantially equal although different surface speeds may also be employed.
  • the top roll may be driven by various means, includ- ing providing a drive chain or belt engaging a suitable sprocket or pulley on the end of shaft 94, but in the preferred embodiment illustrated in Fig. 4, the top roll 80 is driven directly from the chill 12.
  • a thin annular metallic band or sleeve 110 is mounted, as by a shrink fit or bonding, on each end portion of the tubular sleeve 88.
  • the radial thickness of the sleeve 110 is selected to correspond to the desired spacing between the surface 90 and chill surface 14 as described more fully hereinbelow.
  • the top roll is adjusted to urge the outer surface of the sleeves 110 into contact with the outer surface of the chill 12 with sufficient force so that, rotation of the chill will drive the roll 80 through frictional contact with the sleeves 110.
  • the top roll it is critical to the present invention that the top roll not be cooled for the extraction of heat from the top surface of the strip being formed. Instead, successful operation in accordance with this invention requires contact of the top roll with liquid metal only, both from the standpoint of providing the desired substantially defect-free top surface and of enabling the necessary uniform release between the solidified strip and the chill surface. This is accom- pushed by maintaining the top roll at a temperature which will not cool the thin layer of molten metal sufficiently to solidify the top surface of the forming strip.
  • the top roll may be maintained at this elevated temperature by contact with the molten metal alone or with the application of heat from an external source.
  • the top roll is preheated to the desired temperature before commencing the process.
  • the minimum permissible temperature of the top roll will vary, of course, with numerous factors including the thermal conductivity of the top roll, the time of contact between the top roll and the molten metal, and the temperature of the molten metal at the point of contact with the top roll.
  • the top roll surface will be maintained at a temperature which is at least substan ⁇ tially equal to the minimum solidification temperature of the metal or alloy being cast.
  • the sleeve 88 should be formed from a material, or provided with a coating, which will not be wet by the molten metal to avoid a tendency of the molten metal to adhere to the surface of the top roll and dis ⁇ rupt the top surface of the strip being cast.
  • One roll which has been successfully used employs an outer sleeve formed from graphite.
  • a solid graphite cylinder may also be employed as a top roll.
  • a suitable release agent may be applied to the roll surface.
  • carbon black, or soot has been applied by directing a stream of partially combusted hydrocarbon gas, for example, acetylene, onto the surface of the roll to deposit a thin coating of soot onto the roll on a continuous basis during casting.
  • a stream of partially combusted hydrocarbon gas for example, acetylene
  • a manifold 112 extending substantially along the full length of the top roll in the area to be contacted with molten metal, and a burner nozzle, or series of nozzles 114 along the manifold 112 for directing a flow of combustible gas for combustion in contact with the roll surface 90.
  • the gas may be selected to burn with a temperature to stabilize and maintain the surface temperature of the roll at the desired level while at the same time depositing a thin layer of carbon black onto the graphite surface to act as a release agent, thereby assuring that the liquid metal being cast will not adhere to the top roll.
  • separate burners may be employed to apply heat and coat the top . roll.
  • a preferred method of operation is to preheat the top roll to the necessary minimum temperature before commencing the casting operation. Operation of the direct casting apparatus and process provided by the present invention may be more fully understood from Fig. 7 of the drawings which is a dia ⁇
  • the system of Fig. 7 with the top roll 80 out of contact with molten metal from the tundish would operate in accordance with the teachings of the prior art.
  • movement of the chill surface 14 in contact with a stream of molten metal from the tundish would effect immediate solidification of a thin film of the metal on the chill surface 16 and as the chill surface moves, solidification of molten metal will continue and affect total solidification of the strip shortly after it emerges from the melt 20 in the tundish 18.
  • the lower surface of the strip thus produced is suitable for commercial operations.
  • the top surface of the cast strip thus produced may in ⁇ clude defects in the form of ripples and transverse cracks as well as variations in thickness, longitudinal shape and transverse profile and the overall strip may not be suitable for commercial sale or further commercial processing into suitable product.
  • the present invention provides a novel use of a top roll, i.e., a roll located above the chill surface, which overcomes the formation of ripples and transverse cracks and also aids in control ⁇ ling shape, profile and thickness of cast strip.
  • the axis of rotation of the top roll is positioned relative to the top surface of the melt 20 to provide a segment of the top roll surface defined by chord 120, which projects into the bath 20 of molten metal.
  • the axis of rotation of the top roll is located to position the path of movement of the top roll surface in " the liquid metal above the liquid-solid inter- face 122.
  • the top roll is positioned to locate the point of separation of the submerged surface portion and the liquid metal as close as practical to the point of total solidification of the strip while considering other requirements such as the desired thickness of the strip and avoiding contact of the top roll with the solidified portion of the strip.
  • the adjusted position of the axis of rotation of the top roll may be obtained by adjusting the rack and pinion arrangements discussed above.
  • the chill surface 14 will continue to extract heat and affect solidifi ⁇ cation of the molten metal until the strip is completely solidified.
  • the top roll be an uncooled roll or a heated roll.
  • the term "un ⁇ cooled” is intended to mean a roll which is not cooled to extract heat from the melt, but which is operated at a temperature which will not solidify the top surface of the strip and preferably at least equal to the minimum solidification temperature of the metal being cast.
  • the molten metal contacting the submerged section of the roll surface will emerge and separate from the top roll while still in the liquid state.
  • this emerging top surface on the strip can be observed as a shiny liquid surface which quickly solidifies after separation from contact with the top roll.
  • the final adjusted position of the top roll 80 for optimum operation will depend upon a number of parameters including the radius of the chill surface 14, the radius of the top roll sleeve 88, the speed of rotation of the chill surface, speed of rotation of the top roll, and the composition of the metal. It is important, however, that the spacing between the top roll surface and the chill surface 14 be such that at least a thin film of molten metal passes beneath the top roll on the top surface of the strip being formed.
  • the top roll may be contoured along its length to produce the desired gap between the top roll and the chill surface to thereby produce the desired strip cross sectional shape and to compensate for predetermined dimensional changes in the chill surface resulting from operational conditions. For example, depending on the intended use, it may be desirable to produce a strip with a uniform cross section or with a slight crown or in ⁇ creased thickness from the edges to the center.
  • the necessary operating tempera ⁇ ture of the top roll may be obtained by applying an external source of heat as from a gas burner which may be continuously applied throughout the casting operation, or by preheating the top roll, or by establishing equilibrium conditions from extended contact with the melt.
  • the top roll temperature is such that the top roll does not affect solidification of the molten metal and all contact between the top roll and the metal is with liquid metal.
  • the metal that forms the top surface of the cast strip enables the top roll to produce both longitudinal and lateral movement of the molten metal when in contact with the submerged roll surface. This layer or film of molten metal is sufficiently thin to remain stable until it solidifies
  • This apparatus includes a water cooled steel chill providing a casting surface having 44 generally circumferentially extending grooves per inch, a diameter of 27.635 inches, and a width of 42 inches, and a baffle type tundish substantially as shown in Figs. 2 and 3 for receiving and flowing molten metal onto the chill surface.
  • a rotatable nylon brush containing 500 grit carbide particles is mounted for rotation in contact with the chill surface to control the natural oxide surface of the chill.
  • the top roll has a graphite external cylindrical surface 2.516 inches in diameter and 42 inches wide, with an external cylindrical ring 1.5 inches long overlying the roll surface at each end for contact with the chill surface to drive the top roll.
  • a natural gas burner is employed for applying heat to the top roll and a second burner adjusted for incom ⁇ plete combustion of acetylene is provided to apply a release coating of soot to the top roll surface.
  • a number of runs have been made using the apparatus described to produce strip of aluminum alloy 3105. In one such run, the cylindrical rings on the top roll sur ⁇ face had a radial thickness of 0.065 inches.
  • the position of the top roll was adjusted to engage the cylindrical rings with the chill surface to establish a 0.065 inch gap between the cylindrical rings of the top roll and the chill surface; the 0.065 inch ring thickness being the algebraic sum of the 0.045 desired strip thickness and the 0.020 inch reduction in the gap between the top roll and chill surface resulting from thermal expansion of the portion of the chill surface and of the top roll surface contacted by the molten metal.
  • Samples from the cast strip were measured to deter- mine the variations in strip profile, i.e., variations in strip thickness transversely across the strip width, and strip shape, i.e., variations in thickness along the length of the strip.
  • the profile measurements were taken at two inch intervals across the strip and showed a variation in gauge of only 0.002 inches.
  • the shape measurements were taken at one foot intervals and also showed a variation in gauge of only 0.002 inches.
  • Cast ⁇ ing speeds during this run were varied from 250 to 205 feet per minute. About one-half of the coil of cast 3105 aluminum alloy strip just described was slit to remove one inch from each side of the strip, then rolled in a cold mill at speeds of up to 500 feet per minute.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Dans le système décrit (10), qui sert au coulage d'une feuille de métal avec pellicule fondue traînante, le métal en fusion (20) est acheminé depuis une source (18) de métal en fusion et mis en contact avec une surface de refroidisseur (14) au niveau d'une station de coulage et la surface de refroidisseur (14) est mise en mouvement en suivant un trajet dépassant la station de coulage et à une vitesse linéaire prédéterminée, de façon à refroidir rapidement et à retirer une feuille continue (16) de métal de la source de métal en fusion (18), la feuille (16) ayant une surface inférieure qui adhère à la surface du refroidisseur et une surface supérieure non solidifiée au fur et à mesure qu'elle est retirée de la source de métal en fusion (18). Ledit système comprend un cylindre supérieur (80) monté réglable au-dessus de la surface du refroidisseur (14) à une distance sensiblement égale à l'épaisseur de la feuille (16) désirée, le cylindre supérieur (80) étant en contact avec la surface supérieure non solidifiée de la feuille (16) et la température de la surface (90) du cylindre supérieur en contact avec la surface supérieure non solidifiée de la feuille (16) étant maintenue à un niveau qui ne produit pas la solidification de la surface supérieure du métal en cours de coulage.
EP89902493A 1988-02-05 1988-12-29 Appareil et procede servant au coulage direct d'une feuille de metal Expired - Lifetime EP0353293B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89902493T ATE89771T1 (de) 1988-02-05 1988-12-29 Vorrichtung und verfahren zum direkten giessen von metallbaendern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US152486 1980-05-22
US15248688A 1988-02-05 1988-02-05

Publications (3)

Publication Number Publication Date
EP0353293A1 true EP0353293A1 (fr) 1990-02-07
EP0353293A4 EP0353293A4 (fr) 1990-03-27
EP0353293B1 EP0353293B1 (fr) 1993-05-26

Family

ID=22543133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89902493A Expired - Lifetime EP0353293B1 (fr) 1988-02-05 1988-12-29 Appareil et procede servant au coulage direct d'une feuille de metal

Country Status (6)

Country Link
EP (1) EP0353293B1 (fr)
JP (1) JPH02503071A (fr)
AT (1) ATE89771T1 (fr)
CA (1) CA1325509C (fr)
DE (1) DE3881389T2 (fr)
WO (1) WO1989007025A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664513A1 (fr) * 1990-07-16 1992-01-17 Siderurgie Fse Inst Rech Procede et dispositif de controle de l'epaisseur en coulee continue de bande mince de materiau electroconducteur.
US5293926A (en) * 1992-04-30 1994-03-15 Allegheny Ludlum Corporation Method and apparatus for direct casting of continuous metal strip
US5291939A (en) * 1992-11-23 1994-03-08 Reynolds Metals Company Start-up method and apparatus for continuous casting of metal into strip product
US20190176224A1 (en) * 2015-11-30 2019-06-13 Nippon Steel & Sumitomo Metal Corporation Apparatus for producing thin metal strip and method for producing thin metal strip using the same
JP6627974B2 (ja) * 2016-06-10 2020-01-08 日本製鉄株式会社 負極活物質材料、負極及び電池

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514156A (en) * 1978-07-15 1980-01-31 Victor Co Of Japan Ltd Producing device of amorphous metal thin strip
DE3128063A1 (de) * 1980-09-02 1982-05-13 Allied Chemical Corp., 07960 Morristown, N.J. Verfahren und vorrichtung zum stranggiessen eines festen metallstreifens
EP0198669A2 (fr) * 1985-04-12 1986-10-22 Nippon Metal Industry Co.,Ltd. Appareil pour la fabrication de bande métallique en coulée continue

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514156A (en) * 1978-07-15 1980-01-31 Victor Co Of Japan Ltd Producing device of amorphous metal thin strip
DE3128063A1 (de) * 1980-09-02 1982-05-13 Allied Chemical Corp., 07960 Morristown, N.J. Verfahren und vorrichtung zum stranggiessen eines festen metallstreifens
EP0198669A2 (fr) * 1985-04-12 1986-10-22 Nippon Metal Industry Co.,Ltd. Appareil pour la fabrication de bande métallique en coulée continue

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 41 (M-5)[523], 29th March 1980; & JP-A-55 14 156 (NIPPON VICTOR K.K.) 31-01-1980 *
See also references of WO8907025A1 *

Also Published As

Publication number Publication date
EP0353293B1 (fr) 1993-05-26
DE3881389T2 (de) 1993-09-23
EP0353293A4 (fr) 1990-03-27
WO1989007025A1 (fr) 1989-08-10
CA1325509C (fr) 1993-12-28
JPH02503071A (ja) 1990-09-27
DE3881389D1 (de) 1993-07-01
ATE89771T1 (de) 1993-06-15

Similar Documents

Publication Publication Date Title
US4945974A (en) Apparatus for and process of direct casting of metal strip
US7604039B2 (en) Casting steel strip
US5701948A (en) Casting steel strip
US4751957A (en) Method of and apparatus for continuous casting of metal strip
CA2224911C (fr) Coulee de bande de metal
KR100305291B1 (ko) 스틸스트립의주조방법
AU2009262346B2 (en) Strip casting method for controlling edge quality and apparatus therefor
US4896715A (en) Apparatus for and process of direct casting of metal strip
EP0353293B1 (fr) Appareil et procede servant au coulage direct d'une feuille de metal
US3976119A (en) Apparaus for applying a fluid coating to a movable endless casting surface
WO1987002285A1 (fr) Procede et appareil de coulee en continu d'une feuille de metal
EP0448553B1 (fr) Regulation de l'epaisseur d'une bande coulee en continu
US5251686A (en) Tundish outlet edge seal and riser for continuous casting apparatus and method
KR20000057923A (ko) 강 스트립 연속주조 방법
JPH07115133B2 (ja) 薄板連鋳装置およびその運転方法
JPH11221651A (ja) 被覆された鋳造製品を造るための方法および装置
EP3496881B1 (fr) Procédé de coulée de bandes minces
KR100332907B1 (ko) 박판주조장치의분위기유지장치
CA1216730A (fr) Reseau de tuyeres d'arrosage a commandes distinctes, et son emploi dans une installation de coulee continue
JPS61199554A (ja) 連続鋳造方法及び装置
JPS61229445A (ja) 連続鋳造方法及び装置
JPS63238952A (ja) 金属薄板の製造方法
JPS58125347A (ja) 薄板連続鋳造機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19900206

A4 Supplementary search report drawn up and despatched

Effective date: 19900327

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: REYNOLDS METALS COMPANY

17Q First examination report despatched

Effective date: 19911021

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930526

Ref country code: NL

Effective date: 19930526

Ref country code: BE

Effective date: 19930526

Ref country code: AT

Effective date: 19930526

REF Corresponds to:

Ref document number: 89771

Country of ref document: AT

Date of ref document: 19930615

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI CASETTA & PERANI S.P.A.

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3881389

Country of ref document: DE

Date of ref document: 19930701

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931231

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20031218

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20031223

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20031224

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040202

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050701

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20041229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051229