US3766968A - Continuous casting plant for slabs - Google Patents

Continuous casting plant for slabs Download PDF

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Publication number
US3766968A
US3766968A US00242947A US3766968DA US3766968A US 3766968 A US3766968 A US 3766968A US 00242947 A US00242947 A US 00242947A US 3766968D A US3766968D A US 3766968DA US 3766968 A US3766968 A US 3766968A
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US
United States
Prior art keywords
rollers
slab
nozzles
continuous casting
bar
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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.)
Expired - Lifetime
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US00242947A
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English (en)
Inventor
W Fortner
R Hoscher
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Voestalpine AG
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Voestalpine AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling

Definitions

  • ABSTRACT The invention relates to a continuous casting plant wherein a cooling means is provided which includes, apart from customary nozzles, flat ray nozzles which are arranged at a distance of the slab guided in a supporting and guiding structure between rollers so as to be parallel to the width of said slab, the longitudinal axes of said flat ray nozzles extending parallel to the axes of the rollers.
  • a cooling means includes, apart from customary nozzles, flat ray nozzles which are arranged at a distance of the slab guided in a supporting and guiding structure between rollers so as to be parallel to the width of said slab, the longitudinal axes of said flat ray nozzles extending parallel to the axes of the rollers.
  • the invention relates to a continuous casting plant for slabs comprising a water-cooled mould from which the bar is continuously drawn out, a supporting and guiding structure including rollers between which the bar is guided, and a cooling means comprising nozzles through which a coolant, in particular water, is sprayed onto the bar and the rollers.
  • nozzles through which a liquid is atomized; the nozzles are assigned to zones which are subjected to the liquid in groups, and the nozzles are arranged side by side and vertically to the bar surface at a distance therefrom. It is attempted to uniformly apply the coolant by means of a plurality of nozzles so that the course of the temperature is rendered as uniform as possible in a direction transverse to the longitudinal axis of the bar.
  • the nozzles have a relatively small bore with a diameter of about 1.1 to 1.3 mm; the bore widens at its mouth so that the nozzle obtains a flat characteristic.
  • the cooling means comprises flat ray nozzles which are arranged at a distance of the bar so as to be parallel to the surface of the bar, i.e. to the width of the slab, the longitudinal axes of said nozzles running parallel to the axes of the rollers.
  • the flat ray nozzles are arranged in the area of the slab edge, preferably at both slab edges in a staggered manner opposite each other.
  • the cooling means comprises advantageously flat ray nozzles in the area of the deflection, i.e. along one to two thirds of the longitudinal extension of the supporting and guiding structure.
  • the invention may also be applied in horizontal continuous casting plants.
  • the bar issues from a water-cooled mould in horizontal direction, or, possibly, slightly slanting and is likewise supported against the ferrostatic pressure by rollers arranged on both sides of the bar and guided by these rollers.
  • rollers arranged on both sides of the bar and guided by these rollers.
  • at least the nozzles on the underside of the bar are designed as flat ray nozzles according to the invention.
  • FIG. 1 is a schematical lateral view of a continuous casting plant for producing wide steel slabs.
  • FIG. 2 is a schematical top view on a greater scale in direction of the arrow A of FIG. 1.
  • FIG. 3 is a vertical sectional view of the cast bar and the supporting structure and illustrates how the cooling I means according to the invention functions in comparison with known cooling means.
  • numeral 1 denotes a water-cooled mould which oscillates in vertical direction. From the mould a cast bar (slab) 2 having a liquid core still, is drawn out. Supporting and guiding rollers 3 are arranged in the arcuate supporting stand (which is not shown in detail) on both sides of the slab. These rollers 3 are designed to comprise several parts in longitudinal direction (FIG. 2) and they have several bearings.
  • the arcuate supporting and guiding structure may comprise a stationary part on the arch outside and an adjustable part on the arch inside so that the distance between the supporting and guiding rollers 3 may be adjusted to different thicknesses of the slabs.
  • the cast bar is deflected from the vertical line into the horizontal line; after the arcute supporting and guiding structure a combined driving, straightening. and rolling stand 4 is arranged from which the slab 2 runs out horizontally on rollers and is severed to pieces in known manner.
  • the arcuate supporting and guiding structure containing the rollers 3 is provided with a cooling means serving for a secondary cooling of the slab 2 until it is completely solidified, which solidification ordinarily is ended in the area of the drawing, straightening and rolling stand 4.
  • the cooling means comprises a plurality of spraying nozzles 6 which are arranged between the rollers 3 side by side and vertically to the bar surface. The water leaving the spraying nozzles 6 with a pressure of three to eight atm. gauge cools not only the bar 2 but also the rollers 3. At the end of the supporting and guiding arch, i.e.
  • zone 9 suitably both, spray nozzles 6 directed to be vertical to the bar surface, and flat ray nozzles 11 directed to work parallel to the surface of the slab, may be provided as this may be derived from FIG. 1.
  • the longitudinal extension of the zones 9 and 10 amounts each to one third of the total outside of the arcuate supporting and guiding structure.
  • the supporting and guiding portion extends up to several meters into the horizontal line, so that in such a plant also below the horizontal bar portion flat ray nozzles 11 should be arranged.
  • the arrangement of the nozzles may be derived from FIG. 2.
  • the flat ray nozzles 11 are arranged in a staggered manner to lie opposite each other between the supporting and guiding rollers 3, which are designed to comprise e.g. three parts, and in parallel to their longitudinal axes. These nozzles are subjected to a pressure of about 10 atm. gauge so that a broad, flat water ray 12 is created; its direction of flowing is illustrated by arrows.
  • the flat, highpressure water stream covers the total area between two rollers 3 lying side by side, but only part of the cooling water takes actively part in cooling the bar; thus, the bar surface is not excessively cooled, as this would for-example be the case if the same amount of water were sprayed vertically onto the bar surface by means of a plurality of nozzles.
  • the broad water ray 12 has to remove scale, slag and other impurities from the bar surface, as this may be seen from the schematic drawing of FIG. 3.
  • FIG. 3 schematically illustrates how the cooling means according to the invention functions as compared with a known cooling means.
  • Numerals 3, 3', 3" denote three supporting and guiding rollers arranged side by side on the arcuate under side of the slab 2; the roller 3 turns owing to the contact with the bar, while a play has been formed between the rollers 3 and 3" and the bar surface so that these rollers stand still because the bar 2 has lifted owing to its shrinking.
  • the fog nozzles 7 have been used also on the under side of the arcuate structure for cooling the rollers, as shown in FIG. 3.
  • FIG. 3 functions also when the rollers come to a standstill.
  • the flat ray nozzles 11 according to the invention and the broad water stream 12 issuing from it are illustrated in FIG. 3; the cross current within the water stream parallel to the bar surface and in direction towards the rollers is characterized by arrows. It may be seen that such a broad water stream emitted with high pressure transversely to the longitudinal axis of the bar 2 and parallel to its broad side does not only effect the necessary cooling of the bar and of the rollers but also can rinse away scale and slag rests; when the bar is lifted from the rollers the roller bearings will not seize or bake with solids.
  • a continuous casting plant for slabs comprising a water-cooled mould from which the slab is continuously drawn out, a supporting and guiding structure including rollers between which the slab is guided, and a cooling means comprising nozzles through which a coolant is sprayed onto the slab and the rollers, and further comprising flat ray nozzles which are. arranged at a distance of the slab so as to be parallel to the width of the slab for cooling the slab and the rollers, the longitudinal axes of said flat ray nozzles extending parallel to the axes of the rollers.
  • said supporting and guiding structure is an arcuate' structure for deflecting the slab from an essentially vertical direction into an essentially horizontal direction, and wherein said flat ray nozzles are arranged in the area of the deflection which is regarded to amount to from one to two thirds of the longitudinal extension of the arcuate supporting and guiding structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US00242947A 1971-04-30 1972-04-11 Continuous casting plant for slabs Expired - Lifetime US3766968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT372871A AT314752B (de) 1971-04-30 1971-04-30 Stranggießanlage für Brammen

Publications (1)

Publication Number Publication Date
US3766968A true US3766968A (en) 1973-10-23

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ID=3554577

Family Applications (1)

Application Number Title Priority Date Filing Date
US00242947A Expired - Lifetime US3766968A (en) 1971-04-30 1972-04-11 Continuous casting plant for slabs

Country Status (14)

Country Link
US (1) US3766968A (it)
JP (1) JPS5123257B1 (it)
AT (1) AT314752B (it)
BE (1) BE782725A (it)
CA (1) CA953075A (it)
CH (1) CH549425A (it)
CS (1) CS183658B2 (it)
DE (1) DE2208928A1 (it)
ES (1) ES401698A1 (it)
FR (1) FR2134391B1 (it)
GB (1) GB1386871A (it)
IT (1) IT952195B (it)
SE (1) SE368344B (it)
SU (1) SU476733A3 (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983925A (en) * 1973-12-18 1976-10-05 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Apparatus for cooling a continuously cast strand
US3989093A (en) * 1974-03-18 1976-11-02 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Continuous casting plant for slabs
US4019560A (en) * 1974-09-16 1977-04-26 Mannesmann Aktiengesellschaft Spray cooling of continuously cast ingots
US4501314A (en) * 1982-04-29 1985-02-26 Hitachi Shipbuilding & Engineering Ltd. Casting support apparatus for continuous casting equipment
CN101351285B (zh) * 2006-01-11 2011-12-28 Sms西马格股份公司 用于连铸的方法和装置
CN102423796A (zh) * 2011-11-29 2012-04-25 天津钢铁集团有限公司 连铸机扇形段铸辊粘结的控制方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT381659B (de) * 1984-11-29 1986-11-10 Voest Alpine Ag Strangfuehrung fuer eine stranggiessanlage
DE4312277A1 (de) * 1993-04-15 1994-10-20 Schloemann Siemag Ag Anlage zum Herstellen eines Stahlbandes aus einem gegossenen Stahlstrang
DE10001073A1 (de) 2000-01-13 2001-07-19 Sms Demag Ag Verfahren und Vorrichtung zum Verhindern einer unerwünschten Abkühlung der Bandkantenbereiche eines Gußstranges
DE102006056683A1 (de) 2006-01-11 2007-07-12 Sms Demag Ag Verfahren und Vorrichtung zum Stranggießen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970284A (en) * 1961-09-13 1964-09-16 Concast Ag Improvements in or relating to a method and an apparatus for cooling continuous casting material
US3261059A (en) * 1961-12-13 1966-07-19 Properzi Ilario Device for cooling the rod being formed in a machine for the continuous casting of metal rods of indefinite length
US3474853A (en) * 1968-03-19 1969-10-28 Hazelett Strip Casting Corp Apparatus for cooling and supporting the casting belt in a continuous metal casting machine of the drum and belt type
US3612152A (en) * 1969-04-15 1971-10-12 Concast Ag Billet cooling method for continuous casting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970284A (en) * 1961-09-13 1964-09-16 Concast Ag Improvements in or relating to a method and an apparatus for cooling continuous casting material
US3261059A (en) * 1961-12-13 1966-07-19 Properzi Ilario Device for cooling the rod being formed in a machine for the continuous casting of metal rods of indefinite length
US3474853A (en) * 1968-03-19 1969-10-28 Hazelett Strip Casting Corp Apparatus for cooling and supporting the casting belt in a continuous metal casting machine of the drum and belt type
US3612152A (en) * 1969-04-15 1971-10-12 Concast Ag Billet cooling method for continuous casting

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983925A (en) * 1973-12-18 1976-10-05 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Apparatus for cooling a continuously cast strand
US3989093A (en) * 1974-03-18 1976-11-02 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Continuous casting plant for slabs
US4019560A (en) * 1974-09-16 1977-04-26 Mannesmann Aktiengesellschaft Spray cooling of continuously cast ingots
US4501314A (en) * 1982-04-29 1985-02-26 Hitachi Shipbuilding & Engineering Ltd. Casting support apparatus for continuous casting equipment
CN101351285B (zh) * 2006-01-11 2011-12-28 Sms西马格股份公司 用于连铸的方法和装置
CN102423796A (zh) * 2011-11-29 2012-04-25 天津钢铁集团有限公司 连铸机扇形段铸辊粘结的控制方法
CN102423796B (zh) * 2011-11-29 2013-11-06 天津钢铁集团有限公司 连铸机扇形段铸辊粘结的控制方法

Also Published As

Publication number Publication date
CH549425A (de) 1974-05-31
IT952195B (it) 1973-07-20
DE2208928A1 (de) 1973-07-26
CA953075A (en) 1974-08-20
JPS5123257B1 (it) 1976-07-15
SE368344B (it) 1974-07-01
SU476733A3 (ru) 1975-07-05
GB1386871A (en) 1975-03-12
AT314752B (de) 1974-04-25
FR2134391A1 (it) 1972-12-08
BE782725A (fr) 1972-08-16
ES401698A1 (es) 1975-02-16
CS183658B2 (en) 1978-07-31
FR2134391B1 (it) 1977-04-01

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