US3358358A - Method of reducing width of metal slabs - Google Patents

Method of reducing width of metal slabs Download PDF

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Publication number
US3358358A
US3358358A US422726A US42272664A US3358358A US 3358358 A US3358358 A US 3358358A US 422726 A US422726 A US 422726A US 42272664 A US42272664 A US 42272664A US 3358358 A US3358358 A US 3358358A
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United States
Prior art keywords
casting
rolling
slab
width
roll
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Expired - Lifetime
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US422726A
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English (en)
Inventor
Stephen M Jenks
Edwin L Tindall
Howard S Orr
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United States Steel Corp
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United States Steel Corp
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Filing date
Publication date
Application filed by United States Steel Corp filed Critical United States Steel Corp
Priority to US422726A priority Critical patent/US3358358A/en
Priority to GB52361/65A priority patent/GB1117952A/en
Priority to ES0320649A priority patent/ES320649A1/es
Priority to DE1452117A priority patent/DE1452117C3/de
Priority to BE674248A priority patent/BE674248A/xx
Priority to AT1161065A priority patent/AT275767B/de
Priority to NL656516974A priority patent/NL151276B/xx
Priority to BR176065/65A priority patent/BR6576065D0/pt
Priority to FR44104A priority patent/FR1462031A/fr
Application granted granted Critical
Publication of US3358358A publication Critical patent/US3358358A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • 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
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands

Definitions

  • ABSTRACT OF THE DISCLOSURE A method for producing slabs of various widths from a continuously cast slab of the maximum width desired, 'by edge rolling the slab of maximum width while applying longitudinal tension thereto between spaced horizontal-roll stands, thereby reducing the tendency toward a dog-bone sectional shape as a result of the edge rolling.
  • This invention relates to processes for the continuous formation of semi-finished metal sections such as slab and, more especially, to processes for reducing such sections to desired width.
  • a preferred practice of this invention relates to processes for reducing continuously formed steel castings to slabs of desired Width.
  • the required coil widths are not necessarily, in fact, not usually, the prefered widths from the standpoint of efiiciency in the formation of the casting. Rolling the casting into sheet by conventional procedures would reduce to a considerable degree the advantages expected from continuous casting, and would be even less etficient than casting the steel to desired coil width.
  • the principal object of our invention is to make possible the production of continuously cast slabs in a multiplicity of desired Widths from a single continuously formed casting which is at least as wide as the widest slab desired.
  • a metal section having a width at least as wide as the width of the widest slab desired is continuously formed, as for example by continuous casting, and this section is then reduced to desired width by edge rolling while maintaining the section under tension.
  • FIG. 1 is a diagrammatic view of a continuous-casting apparatus suitable for carrying out our invention, showing all apparatus from the mold in which the casting is formed through the rolls in which edge rolling according to our invention is carried out;
  • FIG. 2 is a diagrammatic illustration of the edge rolling apparatus in plan view in which the process of our invention is carried out;
  • FIG. 3 is a diagrammatic side elevation of the apparatus in which the process of our invention is carried out.
  • FIGS. 4a 4b, 4c, 4d,- 4e and 4 are diagrammatic illustrations of the cross sectional shapes which a typical slab assumes during various stages of the rolling process of our invention.
  • a steel casting 10 is continuously formed in a conventional open-ended tubular vertical mold 11, cooled by water sprays 12 and guided by guide rollers 13 as it descends below mold 11 under the control of pinch rolls 14, bent by a bending apparatus which may include fulcrum roll 15 and pusher r0ll 16, and reheated preparatory to edge rolling in a reheat furnace 17.
  • the reheated casting is rolled according to this invention into a slab having a width less than that of the casting. This is accomplished in an edge-rolling apparatus indicated generally at 20 and including a horizontal-roll stand 21, a plurality of vertical-roll stands 22, 23, and 24, and a second horizontal stand 25 which follows the vertical-roll stands.
  • the casting is maintained under tension while it is rolled in apparatus 20, so that substantial changes and distortions in the thickness direction are prevented.
  • Mold 11 water sprays 12, guide rolls 13, pinch rolls 14, fulcrum roll 15, pusher roll 16, and reheat furnace 17 are known elements in continuous-casting apparatus. Hence details of these elements and their operation do not form part of this invention.
  • the average temperature of the casting as it enters reheat furnace 17 is sufliciently high for hot rolling, due to the high temperature of the interior of the casting.
  • Average temperature refers to the temperature of an equivalent casting having the same heat content per unit weight and a uniform temperature throughout.
  • the surface of the casting especially the corners, may be below hot-rolling temperature.
  • Water sprays 12 may cool the casting surface to temperatures below hot-rolling temperature.
  • the core of the casting gradually solidifies as heat is transferred to the surface.
  • heat continues to be transferred from the core to the surface of the casting, causing some reheating of the surface, i.e. equalization of temperature.
  • This reheating usually is not suflicient to equalize or bring the surface up to desired rolling temperatures; hence reheat furnace 17 is provided.
  • Reheat furnace 17 may be omitted when both the average temperature and the surface temperature of the casting are sufficiently high for hot rolling.
  • the temperature of the casting as it enters rolling apparatus 20 must be at least about 1900 F. for low-carbon grades containing approximately .04-.08% carbon. As the carbon content of the steel increases, the minimum permissi-ble temperature of the slab entering apparatus 20 becomes lower, since recrystallization temperature drops with increasing carbon content in the low-carbon range.
  • the average temperature of the casting entering rolling zone 20 may be as low as 1900 F., it is generally much more advantageous to introduce the casting into rolling zone 20 at a higher temperature, for example, about 2100 F. to 2200 F.
  • the amount of work required for rolling is approximately doubled for every 300 F. drop in casting temperature. Hence Work input is minimized by maintaining the casting at a high temperature.
  • Metal of, any composition which can be continuously formed into semi-finished sections can be edge rolled according to this invention.
  • the term metal herein includes both metallic elements and alloys. Copper, brass, aluminum, titanium, iron, and steel, for example, can all be edge rolled according to this invention. This invention is especially applicable to low-carbon steels, stainless steels, killed and semi-killed steels, and any other, steels which may be continuously cast.
  • the casting as it enters rolling apparatus 20 is preferably rectangular or substantially rectangular in crosssectional shape.
  • the sides of the casting need not be absolutely flat but may be slightly concave or convex, for example; castings having such sides may be readily rolled according to this invention and are herein deemed to be substantially rectangular in cross-sectional shape; Frequently the sides of the casting become slightly concave in cooling due to unequal cooling rates on different parts of the casting surface.
  • General-1y no major change in shape of the casting takes place from the time it is formed until it enters rolling apparatus 20, although there is appreciable shrinkage in the casting as it cools.
  • Castings having a width to thickness ratio in the range of 2:1 to 20:1 are readily rolled according to this invention to reduce their width; this can be accomplished without major changes in the thickness.
  • the process of this invention is not applied to castings in which the ratio of width to thickness is less than 2: 1, such as square castings, for these may be advantageously rolled to smaller size by conventional techniques such as those employed in-billet mills, for example.
  • the application of vertical rolls to such wide and thin castings tend to cause buckling.
  • the minimum thickness of steel castings which may be rolled without difliculty according to the present invention is about 3 inches.
  • Thinner castings tend to lose heat too rapidly so that they fall below hot-rolling temperature during the rolling process. Furthermore, such thin castings generally do not have suflicient structural strength to Withstand the edge-roll pressures which are necessary to achieve the desired width reduction.
  • the minimum thickness which canbe conveniently rolled varies somewhat from metal to metal and can be determined by those skilled in the art.
  • the maximum thickness of castings which may be rolled according to the present invention is limited only by the maximum thickness of castings which can be formed by continuous casting. As is well known, the low-heattransfer rate of steel and the resulting cooling problems impose an ,upper limit on casting thickness beyond which continuous casting is not'practicable.
  • edge rolls 22, 23, and 24 wil be referred to herein asvertical rolls.
  • Face rolls 21 and 2S will-be referred to as horizontal rolls.
  • the casting may be deflected from its initial vertical direction to a horizontal direction by any desired means, such as the fulcrum roll 15 and pusher roll 16 herein illustrated. Other bending means may be used if desired.
  • the casting passes continuously from mold 11 to edgerolling apparatus 20.
  • the casting speed determines the speed at which rolling in apparatus 20 takes place.
  • the maximum speed of rolling in apparatus 20 is limited by the speed at which a casting can be conveniently formed.
  • the exit speed of the casting as it leaves the last horizontal roll stand 25 in edge-rolling apparatus 20 will seldom exceed about 50 feet per minute. Generally the exit speed will be much less than this, for it is seldom feasible to form a casting at a rate sufficiently fast to result in a slab exit speed of 50 feet per minute.
  • the rolling apparatus 20 as herein illustrated includes a horizontal-roll stand 21 at the entranceend, a second horizontal-roll stand 25 at the exit end, and a plurality of vertical-roll stands 22, 23, and 24 therebetween.
  • Three vertical-roll stands 22, 23, and 24 are shown herein merely for purposes of illustration. As few as two verticalroll stands may be provided between the horizontal-roll stands 21- and 25, or more than-three Vertical-roll stands can be provided if desired.
  • Both horizontal-roll stands 21' and 25 are power driven, and preferably all vertical-roll stands 22, 23, and 24 are alsopower driven. Variable-voltage direct current motors are particularly advantageous.
  • the amount of reduction in cross-sectional area achieved in rolling apparatus 20 is approximately direct- 1y proportional to the power input to the apparatus at a given temperature; As already noted, power requirements to achieve any given size reduction approximately double with every 300 F. temperature loss. Although the power input into the apparatus 20 as a whole must be equal to that required for reducing slab cross-sectional area, the work input into any individual stand may be greater or less than that consumed by the sectional-area reduction made in that stand.
  • the rolls in the initial horizontal-roll stand 21 are preferably concave in order to reduce the casting thickness at the edges without appreciable. reduction at the center. This compensates for the thickening near the edges which occurs in subsequent edge rolling in vertical-roll stands 22, 23, and 24.
  • Exit horizontal rolls 25 are substantially cylindrical in order to obtain a rectangular slab.
  • the edge rolls 22, 23, and 24 have collars at the bottom to prevent the slab from dropping.
  • the edge rolls may also have collars at the top, or alternatively may be slightly frusto-conical in shape, having sides tapering downwardly and inwardly by a small angle, say about 3.5 to 4, from the vertical. All rolls preferably have roughened surfaces, such as knurled surfaces, in order to increase the frictional engagement between the rolls and the casting.
  • FIGS. 4a thru 4e of the drawing The shapes of a casting at different stages as it is being rolled under tension in rolling apparatus 20 are indicated diagrammatically in FIGS. 4a thru 4e of the drawing. These figures indicate the successive cross-sectional shapes which a typical casting assumes as it is being rolled.
  • the casting has a rectangular shape 30 as it enters rolling section 20.
  • the concave horizontal rolls 21 tend to cause some bulging of the casting so that the faces have a slightly convex cross-sectional shape 31 (FIG. 4b) as it leaves rolls 21.
  • Some reduction in thickness takes place as a result of rolling by horizontal rolls 21; it is generally desired to keep this amount as small as possible consistent with obtaining a finished slab of substantially rectangular cross-sectional shape.
  • Rolling in first vertical stand 22 causes considerable is being rolled will result in a casting having the shape of a dumbbell or a dog bone as it emerges from horizontal rolls 25 at the exit end of rolling apparatus 20.
  • Example 1 A continuously formed steel casting was continuously advanced through the edge-rolling apparatus 20.
  • the average temperature of the slab as it entered was approximately 2200 F., and the surface temperature of the casting ranged from about 1900 F. to about 2100 F.
  • Table I shows the dimensions, cross-sectional area, and speed of the slab initially (i.e., as it enters apparatus and after passage through each of the roll stands 21, 22, 23, 24, and 25. This table also shows the roll diameter, spacing between successive rolls, and roll speed in each stand. The voltage, current flow, and power input (in both kilowatts and horsepower) for each roll stand are also given.
  • Example 2 causes the slab to become slightly thicker near its edges without any increase in thickness along the longitudinal center lines on either face.
  • the shape 32 (FIG. 4c) of the casting at this point is somewhat similar to that of a dog bone. Rolling of the edges accounts for the fiow of metal which causes the thickening near the edges. Further rolling in the succeeding vertical-roll stands 23 and 24 causes further appreciable reduction in width as shown by cross-sectional shapes 33 and 34 of FIGS. 4d and 4e, respectively.
  • the slab still retains generally the cross-sectional shape of a dog bone or a dumbbell at this point.
  • edges of the casting as it leaves horizontal rolls 25 may be slightly irregular or undulated, often being slightly convex near the corners and slightly concave in the vicinity of the longitudinal center lines of each edge.
  • the apparatus used in this example consisted of horizontal rolls 21, two vertical-roll stands 22 and 24, and exit horizontal rolls 25.
  • Roll stand 23 was omitted.
  • Each of the roll stands 21, 22, 24, and 25 was driven by a direct-current motor.
  • Temperature measurements in Examples 1 and 2 indicate an average surface-temperature loss of about 300 F. as the slab progressed through the rolling stand 20.
  • the amount of edge reduction may be less than that obtained in the above examples. It may also be slightly greater.
  • the amount of edg reduction is determined by setting the rolls in each roll stand to the desired exit width or thickness of the casting as it emerges from that roll stand. Control of the power input to each roll stand determines the amount of tension on the. casting. .Ofcourse, the total power input to the several roll stands must be equal to that necessary to obtain the desired size reduction.
  • our invention provides an efficient process for reducing continuously formed castings from a single width, approximately that of the mold, to a desired lesser slab width.
  • a process for making a metal slap comprising continuously casting metal to produce a casting of essentially rectangular cross section having a width greater than that of the slab desired, passing the casting through edge rolls to reduce its width while said casting retains sufficient heat for hot rolling, said reduction. in'width norsion to said casting during edge rolling to materially re.
  • a method of making slabs of various widths including continuously casting a slab of the maximum desired width and indefinite length thru a vertical open-ended mold, cooling said slab as it emerges from said mold but not below an average temperature less than hot-rolling temperatures, bending the slab to a horizontal path, equalizing substantially the temperature of the slab throughout its cross-section, edge rolling the slab to reduce its width and applying longitudinal tension to the slab. on both sides of the zone of edge rolling.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
US422726A 1964-12-31 1964-12-31 Method of reducing width of metal slabs Expired - Lifetime US3358358A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US422726A US3358358A (en) 1964-12-31 1964-12-31 Method of reducing width of metal slabs
GB52361/65A GB1117952A (en) 1964-12-31 1965-12-09 Method of reducing width of cast metal slabs by rolling
ES0320649A ES320649A1 (es) 1964-12-31 1965-12-13 Procedimiento para reducir a una anchura determinada una pieza metalica semiterminada.
DE1452117A DE1452117C3 (de) 1964-12-31 1965-12-20 Verfahren und Walzenstraße zum Warmwalzen von Brammen
BE674248A BE674248A (show.php) 1964-12-31 1965-12-23
AT1161065A AT275767B (de) 1964-12-31 1965-12-23 Verfahren und Vorrichtung zum Walzen heißer Brammen
NL656516974A NL151276B (nl) 1964-12-31 1965-12-27 Werkwijze voor het door walsen aanzienlijk reduceren van de breedte van een warm metalen gietstuk, dat door continu gieten is verkregen.
BR176065/65A BR6576065D0 (pt) 1964-12-31 1965-12-29 Processo para reduzir a largura de chapas metalicas
FR44104A FR1462031A (fr) 1964-12-31 1965-12-29 Procédé pour réduire la largeur de brames

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US422726A US3358358A (en) 1964-12-31 1964-12-31 Method of reducing width of metal slabs

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AT (1) AT275767B (show.php)
BE (1) BE674248A (show.php)
BR (1) BR6576065D0 (show.php)
DE (1) DE1452117C3 (show.php)
ES (1) ES320649A1 (show.php)
FR (1) FR1462031A (show.php)
GB (1) GB1117952A (show.php)
NL (1) NL151276B (show.php)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499212A (en) * 1966-11-10 1970-03-10 Texas Instruments Inc Method of producing printing plates
US3565160A (en) * 1966-11-10 1971-02-23 Curt Herrmann Arc type continuous casting plant
US3580032A (en) * 1969-04-17 1971-05-25 United Eng Foundry Co Apparatus for reducing the width of metallic slabs
US3589429A (en) * 1968-05-29 1971-06-29 Voest Ag Method for continuous casting, cooling and shaping of metal bars
US3610315A (en) * 1969-10-09 1971-10-05 Urban Reclamation Technologies Continuous steelmaking system and process
US3628594A (en) * 1969-01-13 1971-12-21 Koppers Co Inc Apparatus for reducing the cross section of a continuous cast strand
US3650314A (en) * 1969-11-19 1972-03-21 Bohler & Co Ag Fa Geb Apparatus for manufacturing stretch-formed products of high-melting metals
US3680623A (en) * 1966-12-01 1972-08-01 Boehler & Co Ag Geb Improvements in or relating to processes of manufacturing rolled stock from products of continuous casting processes
US3710841A (en) * 1968-12-24 1973-01-16 Demag Ag Method for casting and rolling of metal stands from the casting heat
US4050280A (en) * 1973-08-06 1977-09-27 M.I.M. Rolling Consultants (H.K.) Limited Rod rolling
US4498519A (en) * 1982-05-11 1985-02-12 The Furukawa Electric Co., Ltd. Apparatus for continuous manufacturing lead or lead alloy strip
US4532789A (en) * 1980-02-28 1985-08-06 Estel Hoogovens B.V. Process for reducing the width of a flat metal product by rolling
US4817703A (en) * 1986-11-06 1989-04-04 Sms Schloemann-Siemag Aktiengesellschaft Strip casing unit with downstream multi-stand continuous rolling mill
US4958677A (en) * 1987-06-11 1990-09-25 Hitachi, Ltd. Rolling installation for and rolling method of continuous cast strip
EP0461743A3 (en) * 1990-06-11 1992-03-11 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Hot roughing mill installation
US5113678A (en) * 1987-10-09 1992-05-19 Hitachi, Ltd. Method for controlling plate material hot rolling equipment
US5307864A (en) * 1988-05-26 1994-05-03 Mannesmann Aktiengesellschaft Method and system for continuously producing flat steel product by the continuous casting method
US5348075A (en) * 1988-06-16 1994-09-20 Davy (Distington) Limited The manufacture of thin metal slab
US5771560A (en) * 1995-08-02 1998-06-30 Danieli & C. Officine Meccaniche Spa Method for the continuous casting of long products and relative continuous casting line
EP0947265A3 (de) * 1998-03-31 2001-01-31 SMS Demag AG Verfahren zum Stranggiessen und Fertigwalzen eines Giessstranges innerhalb einer vorgegebenen Fertigbreitentoleranz
US20090095438A1 (en) * 2006-01-11 2009-04-16 Uwe Plociennik Method and Apparatus for Continuous Casting
US10532386B2 (en) * 2015-01-15 2020-01-14 Nippon Steel Corporation Continuous-cast slab, method and apparatus of manufacturing the same, and method and apparatus of manufacturing thick steel plate
IT201900001159A1 (it) 2019-01-25 2020-07-25 Danieli Off Mecc Metodo di laminazione di bramme sottili

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513552A1 (fr) * 1981-09-30 1983-04-01 Usinor Procede de decintrage de produits de coulee continue courbe et installation pour sa mise en oeuvre
JP2585529B2 (ja) * 1986-04-14 1997-02-26 株式会社日立製作所 高温の薄板鋳片を減厚圧延する方法及び装置
GB2302054B (en) * 1995-06-01 1998-10-21 Ralph Gladwin Haynes Production of metal strip
CN106734202A (zh) * 2016-12-27 2017-05-31 中冶连铸技术工程有限责任公司 棒线材和窄带轧制生产线及其生产方法

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US2353289A (en) * 1940-08-03 1944-07-11 Crucible Steel Co America Method and apparatus for rolling strip metal
US2479353A (en) * 1943-11-01 1949-08-16 Rca Corp Device for reducing thickness of thin sheet material
US2501024A (en) * 1944-12-28 1950-03-21 Borg Warner Rolling mill feed tensioning device
US2995050A (en) * 1959-04-27 1961-08-08 Baldwin Lima Hamilton Corp Reducing the cross-section of material
US3049036A (en) * 1957-04-08 1962-08-14 Westinghouse Electric Corp Automatic strip thickness control apparatus
US3054176A (en) * 1959-07-06 1962-09-18 Reynolds Metals Co Forming system
US3055241A (en) * 1957-07-01 1962-09-25 Reynolds Metals Co Metal strip having rounded edges and method of and apparatus for producing the same
US3146525A (en) * 1959-08-13 1964-09-01 John C Bongiovanni Production of strip or sheet stock from molten metals

Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
US2353289A (en) * 1940-08-03 1944-07-11 Crucible Steel Co America Method and apparatus for rolling strip metal
US2479353A (en) * 1943-11-01 1949-08-16 Rca Corp Device for reducing thickness of thin sheet material
US2501024A (en) * 1944-12-28 1950-03-21 Borg Warner Rolling mill feed tensioning device
US3049036A (en) * 1957-04-08 1962-08-14 Westinghouse Electric Corp Automatic strip thickness control apparatus
US3055241A (en) * 1957-07-01 1962-09-25 Reynolds Metals Co Metal strip having rounded edges and method of and apparatus for producing the same
US2995050A (en) * 1959-04-27 1961-08-08 Baldwin Lima Hamilton Corp Reducing the cross-section of material
US3054176A (en) * 1959-07-06 1962-09-18 Reynolds Metals Co Forming system
US3146525A (en) * 1959-08-13 1964-09-01 John C Bongiovanni Production of strip or sheet stock from molten metals

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499212A (en) * 1966-11-10 1970-03-10 Texas Instruments Inc Method of producing printing plates
US3565160A (en) * 1966-11-10 1971-02-23 Curt Herrmann Arc type continuous casting plant
US3680623A (en) * 1966-12-01 1972-08-01 Boehler & Co Ag Geb Improvements in or relating to processes of manufacturing rolled stock from products of continuous casting processes
US3589429A (en) * 1968-05-29 1971-06-29 Voest Ag Method for continuous casting, cooling and shaping of metal bars
US3710841A (en) * 1968-12-24 1973-01-16 Demag Ag Method for casting and rolling of metal stands from the casting heat
US3746076A (en) * 1968-12-24 1973-07-17 Demag Ag Device for the continuous casting and subsequent rolling of a metal from its casting heat in short steps
US3628594A (en) * 1969-01-13 1971-12-21 Koppers Co Inc Apparatus for reducing the cross section of a continuous cast strand
US3580032A (en) * 1969-04-17 1971-05-25 United Eng Foundry Co Apparatus for reducing the width of metallic slabs
US3610315A (en) * 1969-10-09 1971-10-05 Urban Reclamation Technologies Continuous steelmaking system and process
US3650314A (en) * 1969-11-19 1972-03-21 Bohler & Co Ag Fa Geb Apparatus for manufacturing stretch-formed products of high-melting metals
US4050280A (en) * 1973-08-06 1977-09-27 M.I.M. Rolling Consultants (H.K.) Limited Rod rolling
US4532789A (en) * 1980-02-28 1985-08-06 Estel Hoogovens B.V. Process for reducing the width of a flat metal product by rolling
US4498519A (en) * 1982-05-11 1985-02-12 The Furukawa Electric Co., Ltd. Apparatus for continuous manufacturing lead or lead alloy strip
US4817703A (en) * 1986-11-06 1989-04-04 Sms Schloemann-Siemag Aktiengesellschaft Strip casing unit with downstream multi-stand continuous rolling mill
US4958677A (en) * 1987-06-11 1990-09-25 Hitachi, Ltd. Rolling installation for and rolling method of continuous cast strip
US5113678A (en) * 1987-10-09 1992-05-19 Hitachi, Ltd. Method for controlling plate material hot rolling equipment
US5307864A (en) * 1988-05-26 1994-05-03 Mannesmann Aktiengesellschaft Method and system for continuously producing flat steel product by the continuous casting method
US5348075A (en) * 1988-06-16 1994-09-20 Davy (Distington) Limited The manufacture of thin metal slab
EP0461743A3 (en) * 1990-06-11 1992-03-11 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Hot roughing mill installation
US5771560A (en) * 1995-08-02 1998-06-30 Danieli & C. Officine Meccaniche Spa Method for the continuous casting of long products and relative continuous casting line
EP0947265A3 (de) * 1998-03-31 2001-01-31 SMS Demag AG Verfahren zum Stranggiessen und Fertigwalzen eines Giessstranges innerhalb einer vorgegebenen Fertigbreitentoleranz
US20090095438A1 (en) * 2006-01-11 2009-04-16 Uwe Plociennik Method and Apparatus for Continuous Casting
US8522858B2 (en) 2006-01-11 2013-09-03 Sms Siemag Aktiengesellschaft Method and apparatus for continuous casting
US8596335B2 (en) * 2006-01-11 2013-12-03 Sms Siemag Aktiengesellschaft Method and apparatus for continuous casting
US10532386B2 (en) * 2015-01-15 2020-01-14 Nippon Steel Corporation Continuous-cast slab, method and apparatus of manufacturing the same, and method and apparatus of manufacturing thick steel plate
IT201900001159A1 (it) 2019-01-25 2020-07-25 Danieli Off Mecc Metodo di laminazione di bramme sottili

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Publication number Publication date
AT275767B (de) 1969-11-10
NL6516974A (show.php) 1966-07-04
FR1462031A (fr) 1966-12-09
DE1452117A1 (de) 1968-11-14
BE674248A (show.php) 1966-06-23
NL151276B (nl) 1976-11-15
DE1452117B2 (de) 1973-02-08
DE1452117C3 (de) 1978-10-05
ES320649A1 (es) 1966-06-16
BR6576065D0 (pt) 1973-12-27
GB1117952A (en) 1968-06-26

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