GB2105229A - Apparatus for continuous casting of steel in different formats - Google Patents
Apparatus for continuous casting of steel in different formats Download PDFInfo
- Publication number
- GB2105229A GB2105229A GB08223786A GB8223786A GB2105229A GB 2105229 A GB2105229 A GB 2105229A GB 08223786 A GB08223786 A GB 08223786A GB 8223786 A GB8223786 A GB 8223786A GB 2105229 A GB2105229 A GB 2105229A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supporting
- rolls
- roll
- beam blank
- mold
- 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.)
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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
- B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
-
- 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
-
- 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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
-
- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
-
- 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
Abstract
In the continuous casting of steel, profiled beam blanks or, alternatively rectangular strands, are produced by a continuous casting machine by simple exchange of certain machine elements. Thus, some of the supporting-roll assemblies are "combined-use" assemblies which can readily be altered for supporting different kinds of strands. Preferably, the supporting roll assemblies provided directly below the mold are interchangeable between those suitable for the production of a beam blank and those suitable for the production of a slab. The mold itself is also replaceable and may be removed and replaced as a single entity with its immediately-following roll assemblies.
Description
SPECIFICATION
Apparatus for continuous casting of steel
The present invention relates to an apparatus for the continuous casting of steel and provides an apparatus for the continuous casting of steel, which apparatus can optionally produce different kinds of strands, e.g., a beam blank and a rectangular strand, such as a slab, a bloom, and a billet, by means of a single apparatus.
Conventionally, sections, such as H-steels and
I-steels, have been produced by rough-rolling ingots so as to form beam blanks and subsequently roúgh- and finishing-rolling the beam blanks. Recently, sections have been produced by forming beam blanks by the continuous-casting method and subsequently rough- and finishing-rolling the beam blanks so as to form sections.
Since the demand for sections, and thus the amount of sections produced per month or year in steel mills, greatly varies and since the cost of constructing a continuous-casting apparatus is enormous, a continuous-casting apparatus is economical only in that it can mass produce strands. Therefore, the installation of a continuous-casting apparatus for the production of beam blanks has enconomical limitations. Contrary to this, continuous casting apparatuses have been constructed in a number of countries in order to produce slabs from which hot-rolled strips are produced. These continuous casting apparatuses for the production of slabs are becoming more popular because their productivity is high and, further, their slab-production yield is higher than that when the rough-rolling method of producing ingots is em
ployed.In other words, conventional continuouscasting apparatuses were designed to specifically produce either beam blanks or slabs. The circumstances under which beam blanks can be mass produced by means of a continuous casting apparatus are very limited while there is no such limitation in the
mass production of slabs in a continuous casting apparatus.
The present inventors therefore considered that if a beam blank and a rectangular strand, such as slab,
could be optionally produced in a single continuous
casting apparatus, the process would be economical
and the production of various strands in accordance with demand could be realized. the present inventors therefore developed the continuous-casting
apparatus of the present invention.
The beam blank herein indicates a strand which is
used as the starting steel section in the production of
H-steels, I-steels, and the like. The rectangular strand
herein indicates a slab, a bloom, a billet, or the like.
Beam blanks and rectangular strands are collectively
and simply referred to herein as strands.
The continuous casting of a beam blank is carried
out under considerably difficult technically condi
tions, and, therefore, only a beam blank having a
small cross section is produced. On the other hand,
the continuous casting of a rectangular strand, espe
cially a large slab, is not carried out under technically
difficult conditions and therefore the productivity is
high in accordance with the large cross section of the rectangular strand. Consequently, optionally produc ing different kinds of strands, i.e., a beam blank and a rectangular strand, by means of a single continuouscasting apparatus has not previously been conceived in the art of continuous casting.
It is an object of the present invention to provide an apparatus forthe continuous casting of steel in which the cost of construction is not high and in which different kinds of strands, i.e., a beam blank and a rectangular strand, can be optionally produced in accordance with demand.
It is another object of the present invention to provide an apparatus for the continuous casting of steel in which beam blanks and rectangular strands can be interchangeably and economically produced irregardless of the proportion of beam blanks to rectangular strands.
In accordance with the objects ofthe present invention, there is provided a continuous-casting apparatus comprising a mold and a plurality of supporting-roll assemblies which are arranged subsequent to said mold, characterized in that: at least one supporting-roll assembly is a combined-use assembly capable of supporting a rectangular strand in addition to a beam blank; if the apparatus includes a non-combined-use supporting-roll assembly, the supporting-roll assembly for a beam blank can be replaced by a supporting-roll assembly for a rectangular strand; and the mold used specifically for a beam blank can be replaced by a mold used specifically for a rectangular strand, thereby allowing the production of a rectangular strand in addition to a beam blank by means of a sigle continuous-casting apparatus.
In an apparatus for the continuous casting of steel, (hereinafter referred to as the CCM) the changing of different kinds of strands must be easily and quickly carried out so that a beam blank and either a slab, a bloom, or a billet can be optionally and consecutively produced. Speedy and easy changing of the different kinds of strand can be the most effectively carried out by simply replacing the mold. Therefore, all the supporting-roll assemblies of the CCM, e.g., apron rolls, guide rolls, pinch rolls, and bending rolls, should be capable of supporting a beam blank, a slab, a billet, and a bloom. The CCM is hereinafter referred to as a total combined-use supporting-roll CCM.
The present invention also provides a CCM (hereinafter referred to as an exclusive-use supporting-roll CCM) in which; a supporting-roll assembly provided directly below the mold supports exclusively either a beam blank or a rectangular strand; the supporting-roll assembly for supporting a beam blank can be replaced by the supporting-roll assembly for supporting a rectangular strand and vice versa; and, supporting-roll assemblies which are arranged subsequent to the supporting-roll assembly directly below the mold are combined-use assemblies which are capable of supporting a rectangular strand in addition to a beam blank. In the exclusiveuse supporting-roll CCM, the time necessary for repair of the parts of said CCM if break-out occurs is shorter than in the total combined-use supportingroll assembly.In addition, since replacement of the supporting-roll assembly directly below the mold, adjustment of the distance between the rolls of the assembly generally being difficult, can be promptly effected in the exclusive-use supporting-roll CCM, the preparation period before casting is lessened as compared with that in the total combined-use supporting roll CCM.
In the exclusive-use supporting-roll CCM, it is preferred thatthe mold and the supporting-roll assembly provided directly below the mold, for supporting a beam blank be mounted on a common framework and, further, that the mold and the supporting-roll assembly provided directly below the mold, for supporting a rectangular strand be mounted on a common framework.
In addition, it is preferred in the exclusive-use supporting-roll CCM that both of the common frameworks be provided with a transmission machanism with oscillation power therein, the mechanism being coupled with and uncoupled from a motor which generates the oscillation power with the aid of a coupling-changing cylinderwhich is fixed on a stationary base.
In the CCM of the present invention, each of the supporting-roll assemblies usually comprises at least one pair of first rolls which support at least the long sides of a beam blank and a rectangular strand. The supporting method carried out in the COM is hereinafter referred to as the supporting method of the present invention.
According to an embodiment of the supporting method of the present invention, the supporting-roll assemblies comprise, as seen in the casting direction; (a) an eight-sided supporting-roll assembly which consists of a pair of supporting rolls for sup
porting the web of a beam blank, two pairs of support
ing rolls for supporting exclusively the tip surfaces of the flanges of a beam blank, and a pair of supporting
rolls for supporting the lateral surfaces of the flanges
of a bleam blank; (b) four-sided supporting-roll
assembly which consists of a pair of supporting rolls
for supporting the lateral surfaces of the flanges of a
beam blank and a pairofsupporting rollsforsupport
ing at least the web of a beam blank; and (c) a two
sided supporting-roll assembly which consists of a
pair of supporting rolls for supporting at least the
upper and lower flange surfaces of a beam blank, a
rectangular strand being supported by the support
ing rolls of the eight-, four-, and two-sided supporting
roll assemblies except for those supporting exclu
sively the tip and lateral surfaces of the flanges of a
beam blank.
According to a preferred embodiment of the CCM
of the present invention for carrying out the support
ing method of the present invention, the CCM of the
present invention comprises a plurality of segments,
each segment having a plurality of supporting-roll
assemblies arranged in the casting direction and
being disposed in a single frame.
The present invention is hereinafter explained with
reference to the drawings.
In the drawings;
Figure 1 schematically illustrates a CCM according
to the present invention;
Figures 2A through 2D schematically illustrate the
supporting method of the present invention with regard to a beam blank;
Figure 3 schematically illustrates the solidification of a beam blank;
Figure 4 schematically illustrates the supporting method ofthe present invention with regard to a slab;
Figure 5 shcematically illustrates an embodiment of the total combined-use supporting-roll CCM;
Figures 6A through 6C and Figures 7A through 7C schematically illustrate the supporting method of the present invention carried out in the CCM of Figure 5;
Figure 8 schematically illustrates an embodiment of the exclusive-use supporting-roll CCM;
Figures 9 through 11 are plan views of a four-sided supporting-roll assembly;;
Figure 12 is a top front view of an exclusive-use supporting-roll CCM;
Figures 13 and 14 schematically illustrate the supporting method of the present invention carried out in the CCM in Figure 12;
Figures 15A through 15C, 76A through 16C, 17A and 17B, 18A and 18B, 19A through 19C, and 20A through 20C schematically illustrate the F-side fixing-supporting method of the present invention; and
Figures 21 and 22 are top plan views of a F-side fixing-supporting-roll assembly.
In Figure 1, a CCM according to the present invention is schematically illustrated. A mold is denoted by reference numeral 2 and a beam blank is denoted by reference numeral 8. A supporting-roll assembly comprises supporting rolls 11 for supporting the lateral surfaces oftheflanges ofa beam blank(hereinafter referred to as the flange lateral-surface supporting rolls 11), supporting rolls 14for supporting the web of a beam blank (hereinafter referred to as the websupporting rolls 14), supporting rolls 13 for supporting exclusively the tip surfaces of the flanges of a beam blank (hereinafter referred to as the exclusive tip-surface supporting rolls 13, and supporting rolls 17 for supporting the upper and lowerflange surfaces of a beam blank (hereinafter referred to as the upper and lower flange-surface supporting rolls 17).
As is described hereinbelow, notall of said supporting rolls 11, 13, 14, and 17 are brought into contact with a slab.
In the zone of the CCM denoted by (I), eight-sided supporting-roll assemblies, one of which is shown in
Figure 2A, are disposed. Similarly, four-sided supporting-roll assemblies (shown in Figure 2B and
Figure 2C) and a two-sided supporting-roil assembly (Figure 2D) are disposed in the zones of the CCM indicated by (II) and (III), respectively. Reference numeral 7 indicates a header for cooling strands.
The eight-sided supporting-roll assembly shown in
Figure 2A is necessary for maintaining the shape of the beam blank 8, which contains a thick unsolidified portion. When the unsolidified portion of the beam blank 8 decreases, the four-sided supporting-roll assemblies shown in Figures 2B and 2C are consecutively used for supporting the beam blank 8, and when there is appreciably no unsolidified portion or complete solidification has taken place in the beam blank 8, the two sided-supporting-roll assembly shown in Figure 2D is used for supporting the beam blank 8. More specifically, in the beam blank 8 shown in Figure 3, the fillet portions 100 include unsolidified metal 8a, and, as is well known, solidification occurs very late in the fillet portions 100.In accordance with solidification in the fillet portions 100, the arrangement of the types of supporting-roll assemblies is determined so that the eight-sided, four-sided, and two-sided supporting roll assemblies (Figures 2A through 2D) are consecutively arranged in the CCM.
Incidentally, since the progress of solidification in the fillet portions 100 can be rather accurately estimated based on the temperature of the molten steel, the casting speed, the cooling speed and other casting parameters, the eight-sided, four-sided, and twosided supporting-roll assemblies can be appropriately arranged in the CCM.
In Figure 1, the beam blank 8 is cast in accordance with a predetermined radius of curve and is straightened linearly by unbending rolls disposed in the two-sided supporting-roll assembly of the zone (III).
The straightened beam blank is cut into beam blank sections having a predetermined length and then the beam blank sections are successively subjected to the next step, for example temperature-holding in a holding furnace and heating in a heating furnace, and then to the rough- or finished-rolling step.
A single supporting-roll assembly or a plurality of supporting-roll assemblies arranged in the casting direction may be disposed in a single frame so as to construct segments, thereby simplifying replacement of the supporting-roll assemblies, as is well known.
In Figure 2, the exclusive tip-surface supporting rolls 13, the web-supporting rolls 14, and the upper and lower flange-surface-supporting rolls 17 are the first rolls which support the long sides of the beam blank 8, and the flange lateral-surface supporting rolls 11 are the second rolls which support the short sides of the beam blank 8.
According to an embodiment of the supporting method of the present invention, one pair of the first rolls, for example, the web-supporting rolls 14 (Fig ures 4A and 4B) orthe upper and lowerflange-surface supporting rolls 17 (Figures 4C and 4D), support a slab 80. Incidentally, Figures 4A through 4D correspond to Figures 2Athrough 2D, respectively, concerning the portion of the CCM where the respective supporting-roll assemblies are installed.
In the total combined-use supporting-roll CCM shown in Figure 5, the supporting-roll assemblies in the zones (I), (all), and (III) are in the form of two, five, and four segments, respectively. These segments are denoted by 25a through 25k. The strand is cut into pieces (only one piece 27 is shown), by a cutting device 26, and the cut pieces are transferred to the next step by a transferring table 28.
Reference numeral 2a indicates the pouring position where continuous casting is started by using a beam-blank casting mold 2b or a slab casting mold 2c. When the continuous casting of a beam blank (not shown) is completed, the beam-blank casting mold 2b is displaced by a displacing device (not shown), such as a crane, a rail, or a turntable. subsequently, the slab casting mold 2c is displaced to the pouring
position 2a by displacing device (not shown) and engaged with and fixed to an oscillation mechanism
and a stationary frame (not shown), respectively.
Continuous casting of a slab is then initiated.
In Figures 6A, 6B, and 6C, the process of continu
ously casting a beam blank 8 is schematically and
partially illustrated. The beam-blank casting mold 2b
is a split-type casting mold and includes cooling
water circulating channels 19. The supporting-roll
assembly in the segment 25a is, as shown in Figure
6B, an eight-sided supporting-roll assembly. The
supporting-roll assemblies in the segments 25h
through 25k are, as shown in Figure 6C, two-sided
supporting roll assemblies. In the CCM for casting the
beam blank 8 having a low web height, the web
supporting rolls 14(Figure 6B) are short. The support
ing of a wide slab only by means of the web
supporting rolls 14 is therefore rather difficult but is
possible especially when the exclusive tip-surface
supporting rolls 13 are used in addition to the web
supporting rolls 14.
In Figure 7A, the slab-casting mold 2C is illustrated
and is a built-up mold composed of two long-sided
and two short-sided plates. The slab 80 which is continuously cast in the slab-casting mold 2C is sup
ported by the exclusive tip-surface supporting rolls 13
and the web-supporting rolls 14, as shown in Figure 7B. In Figure 78', it is illustrated that when the web
height of the beam blank 8 (Figures 2 and 3) is great, andtheweb-supporting rollsl4arelongenough,the web-supporting rolls 14can be used alone to support the slab 80. The slab 80 shown in Figure 7B is not
shown on the same reduced scale as in Figure 7B'.
In the experiments carried out by the inventors,
beam blanks having the following dimension were continuously cast at a casting speed of one meter per
minute.
Web height : 1030 mm
Flange width : 450 mm
Web width : 135 mm
Width of tips of flanges : 110 mm
When the total weight of the continuously cast beam blanks amounted to 2,000 tons, the beam-blank casting mold was replaced with a slab casting mold, as illustrated in Figures Sthrough 7, and 2,100tons of slabs were continuously cast at a casting speed of 1.25 meters per minute. During continuous casting, the supporting-roll assemblies operated satisfactorily, and there were no accidents. The slabs had a width of 560 mm and a thickness of 250 mm.
The idea of optionally producing different kinds of strands, i.e., a beam blank and a rectangular strand, by means of a single CCM has not previously been conceived in the art of continuous casting since, from a technically established theory, it is recognized that it is favorable to design the short web-supporting rolls l4ofan eight-sided supporting-roll assembly(Figure 6B) so that they have a length of 200 mm or less as is well known. When the long web-supporting rolls 14, shown in Figure 2B, having a length of from 400 to 700 mm are used in the CCM of the present invention, both a beam blank and a rectangular strand can be produced by means of a single CCM, as illustrated in
Figures 6 and 7, such production being extremely economical. In addition, it is also possible to produce by means of a single CCM both a huge beam blank having a web height of from 600 to 1200 mm and which has not previously been continuously cast and a slab having a width of from 400 to 700 mm.
In the CCM of the present invention in which the supporting rolls of one or several of the segments support exclusively either a beam blank or a rectangular strand, said one or several segments for supporting the beam blank can be replaced by those for supporting the rectangular strand and vice versa. It is, therefore, possible to produce every kind of strand in a single CCM. Nevertheless, when the supporting rolls of two or more of the segments support exclu sivelyeithera beam blank or a rectangular strand, the time required for replacement of the segments is too long for the casting of different kinds of strands to be practically carried out.
In FigureS, an embodiment of the exclusive-use supporting-roll CCM is illustrated. When the supporting-roll assemblies 23 and 24 are displaced so that they are directly below the mold of the pouring position 2a, they exclusively support a beam blank or a slab. Segments 25a through 25j are arranged in the casting direction, and a plurality of supporting-roll assemblies is disposed in each of the segments so as to attain convenient mounting, replacing, repairing, and maintaining of the supporting-roll assemblies.
The supporting-roll assemblies include: so-called apron rollers, i.e., supporting rolls which are arranged directly below the mold, are spaced a short distance from each other, and define a forced-cooling zone; pinch rolls for imparting a withdrawal force to strands; guide rolls for guiding strands; straightening rolls for bending strands linearly; and so-called compression casting rolls for preventing cracks in strands. These various kinds of rolls are not specifically described herein but are briefly illustrated in the segments 25 for the sake of brevity.
When the beam blank is continuously cast in the exclusive-use supporting-roll CCM of Figure 8, the beam-blank casting mold 2b is directly connected to the supporting-roll assembly 23 for supporting the
beam blank, and the beam-blank casting mold 2b and the supporting-roll assembly 23 are simultaneously transferred to the pouring position 2a. The supporting-roll assembly 23, which is located directly below the beam-blank casting mold 2b, is an eightsided supporting-roll assembly, as shown in Figure 2A, and firmly supports a beam blank in such a man
nerthatthe beam blank has a good shape and quality.
The types of supporting-roll assemblies are varied in accordance with a decrease in the unsolidified portion (Figure 3, 8a) of a beam blank, i.e., a beam blank is consecutively supported by four-sided supportingroll assemblies such as those shown in Figures 2B and 2C, as well as by a two-sided supporting-roll assembly such as that shown in Figure 2D. Four-sided supporting-roll assemblies such as those shown in
Figures 2B and 2C can be used in the segments 25a through 25e, and a two-sided supporting-roll assem
bly such as that shown in Figure 2D can be used in the segments 25f through 25j.
A pair of first rolls, forexampletheweb-supporting rolls 14, and a pair of the upper and lower flangesurface supporting rolls 17 are retractable in a traversal direction in relation to the axis of the beam blank 8 so that one of the first rolls advances toward and retracts from one of the sides of the beam blank 8 or the pair of first rolls advances toward and retracts from the sides of the beam blank 8. Embodiments of the four-sided supporting-roll assembly in which the pair of first rolls are retractable as stated above, are illustrated in Figures 9 and 10. In Figure 9, the foursided supporting-roll assembly 30 comprises flange lateral-surface supporting rolls 35 which are brought into rotatable contact with the lateral surfaces of the beam blank 8 and support the beam blank 8.The flange lateral-surface supporting rolls 35 are supported by bearing stands 38 which are secured on frames 39. The frames 39 are engaged with screw devices 40 via retractably actuated shafts 41. Worm devices 42 are engaged with worm shafts 43 which are actuated by driving devices (not shown). The shafts 41 are therefore advanced and retracted by the worm shafts 43, the worm devices 42, and the screw devices 40 so that the shafts 41, which are secured to the frames 39, determine the position of the flange lateral-flange surface supporting rolls 35.
Similarly, web-supporting rolls 34 are supported by bearing stands 44 which are secured on frames 45.
The frames 45 are engaged with screw devices 48 via retractably actuated shafts 46. Worm devices 47 are engaged with worm shafts 49 which are actuated by driving devices (not shown). The shafts 46 are therefore advanced and retracted by the worm shafts 49, the worm devices 47, and the screw devices 48 so that the shafts 46, which are secured to the frames 45, determine the position of the web-supporting rolls 34. The worm devices 42 and 47 and the screw devices 40 and 48 are supported bystationaryframes 51 and 50 which are connected to one another by bolts (not shown). In the four-sided supporting-roil assembly 30 shown in Figure 9, the flange lateralsurface supporting rolls 35 are retractable.However, the flange lateral-surface supporting rolls 35 may be stationarily arranged in the four-sided supporting-roll assembly 30, such a stationary arrangement occasionally being preferably from an economical point of view, depending upon the size of the beam blank 8, especially when the size of the beam blank 8 is not changed in consecutive casting procedures.
An embodiment of the stationary arrangement of the flange lateral-surface supporting rolls 35 is illustrated in Figure 10 in which, for the sake of simplicity of description, the beam blank 8 and the slab 80, which are guided by or withdrawn by the four-sided supporting-roll assembly 30, are shown on the left side and the right side of the drawing, respectively, along the line A-A. The same parts of the four-sided supporting-roll assembly as that in Figure 9 are denoted by the same reference numerals. The flange lateral-surface supporting rolls 35 are rotatably in contact with the flange surfaces of the beam blank 8 and support the beam blank 8. The bearing stands 38 are connected to the stationary frames 51 so that the flange lateral-surface supporting rolls 35 are not retractable, i.e. they are stationary.The short sides of the slab 80 are not supported by the flange lateralsurface supporting rolls 35. The web-supporting rolls 34 are brought into contact with the web of the beam blank 8 having any dimension as well as the long sides ofthe slab 80 having any dimension, and, there fore, the beam blank 8 and the slab 80 are supported and guided by the web-supporting rolls 34. The structure of the four-sided supporting-roll assembly 30 shown in Figure 10 can be fabricated at a low cost.
Since there is no need to support the short sides of the slab 80, the supporting-roll assemblies are positively providedwithsuch a structurethatthe rolls arranged at the short sides of a strand are stationary, this being economically advnatageous.
In Figure 11, a four-sided supporting roll assembly 30 similar to that of Figure 9 is illustrated, and the upper and lower flange-surface supporting rolls 17 of said assembly are retractable. The same parts of the four-sided supporting-roll assembly 30 as those in
Figure 9 are denoted by the same reference numerals.
An embodiment of the exclusive-use supportingroll CCM is now described in regard to how the mold and the supporting-roll assembly provided directly below the mold are interchangeably arranged in said
CCM so as to attain easy and quick changing of different kinds of strands. In Figure 12, the beam-blank casting mold 2b, an eight-sided supporting-roll assembly 67 which is arranged subsequent to the beam-blank casting mold 2b and which exclusively supports a beam blank, and a four-sided supportingroll assembly 77 which supports both a beam blank and a rectangular strand are schematically illustrated.
The beam-blank casting mold 2b is mounted on a mold-oscillation table 63 via a mold-supporting frame 62. The mold-oscillation table 63 is oscillated by eccentric cams 64 which generate an oscillating movement and the eccentric cams 64 are actuated by an oscillation-power transmitting shaft 65 and an oscillation-power transmitting gear device 66. The eight-sided supporting-roll assembly 67 is arranged in such a manner that its top end is adjacent to the beam-blank casting mold 2b and is slidably sup
ported by and fit into the mold-supporting frame 62.
The eight-sided supporting roll assembly 67 can therefore be displaced in the direction of oscillation of the beam-blank casting mold 2b. The lower end of the eight-sided supporting-roll assembly 67 is movably fit into a supporting base (not shown) which is fixed to a common framework 68. The eight-sided
supporting-roll assembly 67 is therefore capable of swinging around its lower end does not impede the oscillating movement ofthe mold-oscillation table 63 at all. In addition, the common framework 68 is
removably fixed to a base frame 69. A stopper 70
rigidly engages the common framework 68 and the
base frame 69.
The common framework 68 is coupled to a powertransmission mechanism, a clamp device, and a cooling-water conduit coupling which are described
hereinbelow and which are uncoupled from the common framework 68 upon completion of continu
ous casting of a beam blank. After the uncoupling
described above, a hanger 72 is engaged around pins 71 provided on the common framework 68, and the
hanger 72 is then lifted up by means of a hook73 of an
overhead travelling crane (not shown), with the result that the common framework 68, on which the beamblank casting mold 2b,the eight-sided supporting-roll
assembly 67, and the above described means for oscillating the mold are mounted, is lifted up. The common framework 68 is then transferred to a predetermined position where it remains in a standby condition until the next casting procedure.Alternatively, repair of the members mounted on the common framework 68 can be effected. A slab-casting mold and supporting rolls mounted on a common framework (not shown in Figure 12) are transferred from a standby position to a puring position, and the common framework is fixed to the base frame 69.
Immediately after adjusting the roll distance of the four-sided supporting-roll assembly 77 and the succeeding supporting-roll assemblies (not shown), the continuous casting of a slab can be initiated.
The members of the CCM for supporting a slab are the same as those for supporting a beam blank except for the two-sided roll assembly provided directly below the slab-casting mold. Therefore, description of the members is omitted.
A cross-sectional view of the exclusive tip-surface supporting rolls 13 of Figure 2A and the websupporting rolls 14 of Figure 2A as shown in Figure 12, the rolls 13 and the rolls 14 being denoted in the figure by 74 and 75, respectively. A number of the exclusive tip-surface supporting rolls 74 and the web supporting rolls 75 are arranged a short distance from each other, such arrangement being preferable for maintaining the shape of a beam blank and preventing break-out.
The four-sided supporting-roll assembly 77 is used for both a beam blank and a slab. The web-supporting rolls 14 of Figure 2B are denoted in Figure 12 by 78.
The four-sided supporting-roll assembly 77 is in the form of a segment and is disposed in a single frame 76. The single frame 76 is removably secured to a machine frame 99 by metal fittings 79 so as to simplify repair of the four-sided supporting-roll assembly 77. The machine frame 99 is engaged with a base beam 82 via a fitting 81. The web-supporting rolls 78 are retracted and advanced in a traversal direction in relation to the axis of a strand by a screw device 83 which is mounted on the outer side of the single frame 76. The screw device 83 includes a driving shaft 84 and a driving hydraulic motor 85. The websupporting rolls 78 are retracted and advanced as stated above and are thus displaced at an appropriate position in accordance with the web width orthe slab width.
A cooling-water conduit coupling 86 is communicated with a cooling-water channel (not shown) formed in the common framework 68. The coolingwater conduit coupling 86 is displaced by a cylinder device 87 which is placed on a stand 88 so as to disconnected and connect the cooling-water path when installing and withdrawing the common framework 68, respectively. The power-transmission mechanism includes an oscillation-power generating motor 90 placed on a stand 94, a transmission shaft 91, and a transmission-shaft coupling device 89.
Oscillating power is transmitted via the transmission-shaft coupling device 89 to the beamblank casting mold 2b. When the common framework 68 is replaced so as to change kinds of strands, a coupling-chaning cylinder 93 which is mounted on a stationary base 92 is actuated so as to uncouple and then couple the transmission-shaft coupling device 89 with respect to the oscillation power transmission mechanism (not shown) provided in the common framework.
In Figure 13, the slab 80 is supported by the pair of supporting rolls 37 of the two-sided supporting-roll assembly which is provided directly below the slabcasting mold and which is disposed on a common framework (not shown). The two-sided supportingroll assembly mentioned above can easily and promptly replace the four-sided supporting-roll assembly provided in the common framework 68 (Figure 12).
In Figure 14, the web-supporting rolls 78 of the four-sided supporting-roll assembly 77 support the slab 80.
According to an embodiment of the CCM of the present invention, in a pair of supporting rolls for interchangeably supporting different kinds of strands, the pair of supporting rolls consists of a fixed side roll and a loose side roll, said fixed side roll which is brought into contact with the fixed side of a strand being rotatably supported by a bearing which is stationarily mounted on a supporting frame. The fixed side and the loose side of a strand are hereinafter referred to as the F side and the L side respectively.
When a beam blank and a rectangular strand are of a different dimension, a four-sided or two-sided supporting-roll assembly in which several supporting rolls, for example, upper and lower flange-surface supporting rolls, are used for supporting both the beam blank are the rectangular strand must be provided with a means for optionally changing the position of the supporting rolls. Installation and maintenance ofthis means are, however, expensive. In addition, preparation for the casting procedure becomes long since roll alignment of the supporting-roll assembly is rather complicated. In the zone ( II) of the
CCM (Figures 1 and 5), roll alignment is especially complicated since a pair of the web-supporting rolls 14 (Figure 2B) must be displaced for carrying out roll alignment.Furthermore,the preparation time is even longer when a supporting-roll assembly ofthe zones (II) is replaced so as to change different kinds of strands.
In the supporting method of the present invention illustrated in Figures 15A through 15C and Figures
16A through 16C, the eight-sided supporting roll assemblies (Figures 15A and 16A) and the four-sided supporting-roll assemblies arranged in the zone (I) (Figures 1 and 5) are interchangeable.. However, the four-sided supporting-roll assembly (Figures 15B and 16B) arra nged in the zone (II) (Figu res 1 and 5) is used forsupporting both the beam blank8 and the slab 80.
An F side roll 14f of the pair of the web-supporting rolls 14 (Figures 158 and 16B) is stationary and only the L side roll 141 is displacable so as to change its
position relativetothe Fside roll 14f. Incidentally, the
F side indicates the lower side of a strand as it is guided to a horizontal position, as is well known. The four-sided supporting-roll assembly (Figure 16A) for supporting the slab 80 consists of a pair of the longsided supporting rolls 9 and a pair of the short-sided supporting rolls 19.The flange lateral-surface supporting rolls 11 of the four-sided supporting roll assembly (Figures 15B and 16B) may be stationary.
The supporting-roll assemblies arranged in the zone (III) (Figures 1 and 5) consist of a pair of rolls whose diameter is the greatest at the central portion thereof. These rolls ae hereinafter referred to as central large-diameter rolls 95f and 95/. The tip surfaces and the web of the beam blank 8 are supported by a
pair ofthe central large-diameter rolls 95fand 951. The design of the rolls of a rolling mill can be greatly simplified since, according to recently developed techniques, various kinds of H steels can be produced by using one format of a beam blank.In this case, it is preferable to use the central large-diameter rolls 95f and 951 to support the beam blank 8. In order to support the slab 80 (Figure 16C) by using the central large-diameter rolls 95f and 95/, the central portions of these rolls are rotably brought into contactwith the slab 80.
The central large-diameter roll 95f at the F side is stationary while the central large-diameter roll 95/ at the F side is displacable and is displaced so that it engages the F side of the beam blank 8 (Figure 15C) and the slab 80 (Figure 16C).
In Figures 17A and 17B, anotherembodimentofthe two-sided supporting roll assembly arranged in the zone (III) (Figures 1 and 5) is illustrated. A pair of supporting rolls consists of an upper flange-surface supporting roll 17/ at the L side and a central largediameter roll 95f at the F side. Since solidification of the molten metal is almost complete in the zone (Ill), it
is not necessary to positively support the web of the
beam blank 8 and the L side thereof, and therefore not the central large-diameter roll but the upper flangesurface supporting roll 17/is used in the zone Ill (Fig
ures 1 and 5). The central large-diameter rolls 95f and 95/ (Figures 15C and 16C) can be manufactured by casting, machining, or shrinkage fitting.However, these rolls are expensive as compared with a flat roll such as the web-supporting rolls 17 (Figures 2C and 2D). It is, therefore, preferable, as can be seen from
Figures 15C and 16C as well as Figures 17A and 17B, to replace central large-diameter rolls with as many flat rolls as possible depending on the progress of solidification.
In Figures 18A and 18B, an embodiment of a sixsided supporting-roll assembly arranged in the zone (III) (Figures 1 and 5) is illustrated. Usually, the zone (III) (Figures 1 and 5) is the zone of a CCM where strands are straightened and where the supportingrolls are designed so as to satisfactorily resist the reaction force of strands being straightened. Therefore, when the central large-diameter rol Is 95f and 95/ (Figures 15C and 16C) are used in the zone (III) (Figures 1 and 5), their roll bodies 97f and 97/ occasionally have a large diameter, a large diameter being uneconomical. In addition, when the diameter of the roll bodies 97f and 97/ becomes large, the distance between the supporting rolls as seen in the withdrawal direction of a strand becomes great, with the result that the straightening of an unsolidified strand may result in bulging of the strand and deterioration of the qualities of the strand. Therefore, it is sometimes very advantageous, depending upon the format of a strand and the casting conditions, to employ a six-sided supporting-roll assembly arranged in the zone (III) (Figures 1 and 5) to support the beam blank 8, in which assembly a portions of the supporting rolls for supporting the tip surfaces and the web of the beam blank 8 are not integral but are separated as shown in Figure 18A.More specifically, the supporting-roll assembly in which portions of the supporting rolls for supporting the tip surfaces and the web of the beam blank 8 are integral must be so designed that roll necks 98f and 98/, (Figure 15C), which are in contact with the tip surfaces ofthe beam blank 8 and additionally support the workpiece, have a diameter enabling them to resist the reaction force of a strand being straightened. Therefore, the diameter of the roll bodies 97f and 97/ must be determined univocally, that is, said diameter must be the sum of the diameter of the roll necks 98f and 98/ and the flange-tip width, i.e., the difference between the flange width and the web width. In addition, the roll body and the roll neck of the central large-diameter rolls 95f and 95/ are designed to be coaxial with respect to one another.Because of the design of the central large-diameter rolls 95f and 95/ as explained above, the diameter of the roll bodies 95/ and 97f becomes great. Contrary to such great diameter of the roll bodies 97/and 97f which increases the dimension of the central large-diameter rolls as a whole, the diameter of the web-supporting rolls 14 and the tipsurface supporting rolls 13 is very appropriately determined in respect to their resistance to the reaction force of a strand being straightened. In addition,
each web-supporting roll and tip-surface supporting
roll arranged at either the F side or the L side may not
be coaxial. Therefore, the six-sided supporting-roll
assembly shown in Figure 18A is advantageously
arranged in the zone (III) (Figures 1 and 5) depending
upon the format of the strands and the casting conditions.
When the rolls at the F side of the two-and four
sided supporting-roll assemblies are stationary, the
distance between a pair of rolls, i.e., a roll at Fthe side
and a roll at the L side, can be adjusted simply by
displacing the roll atthe Lside, with the resultthatthe productivity of continuous casting can be drastically
enhanced since the period of preparation for con
tinuous casting and the time necessary for changing
different kinds of strands are shortened.In addition,
when the eight-sided supporting-roll assembly 67
(Figure 12) is so designedthatthe supporting rolls at
the F side and the L side are stationary and displac
able, respectively, the eight-sided supporting-roll
assembly 67 is used for interchangeably supporting a
beam blank and a rectangular strand and thus pro
ductivity can be enhanced. However, the installation
cost of such eight-sided supporting-roll assembly is
rather high.
In Figures 19Athrough 19C and 20Athrough 20C,
an embodiment of the supporting-roll assemblies for
supporting the beam blank 8 and the slab 80, respec
tively, is illustrated. The supporting-roll assemblies
shown in Figures 19A and 20A are similar to the
supporting-roll assemblies shown in Figures 15Aand 16A in that they are interchangeable. The supporting
roll assemblies shown in Figures 19B and 19C are
arranged in the zones II or Ill (Figures 1 and 5) and
support the beam blank 8 by means of the central
large-diameter rolls 95f and 95/, as shown in Figures 19B and 19C.The supporting-roll assemblies shown in Figures 20B and 20Care identical tothoseshown in
Figures 19B and 19C, respectively, and support the slab 80 by means of the central large-diameter rolls 95f and 95/. In these supporting-roll assemblies (Figures 19B, 19C, 20B, and 20C), the central largediameter rolls 95f arranged atthe F side can be stationary while the central large-diameter rolls 95/ arranged at the L side can be displaced and their position can be adjusted relative to a strand. These supporting-roll assemblies are advantageous in that they are few in number. Afurther detailed description of the supporting-roll assemblies of Figures 19C and 20C is omitted because they are similar to those shown in Figures 15C and 16C, respectively.
In Figure 21, an embodiment of a four-sided supporting-roll assembly is shown, and beam blank and a slab supported by this assembly are shown on the left side and the right side, respectively, of the drawing along the line A-A. The web-supporting roll 141 at the L side is rotatably supported by the bearing stands 44 which are secured to the frame 45. The frame 45 is movably connected to the screw device 48 which is actuated by the worm shaft 49 via the worm device 47. When the worm shaft 49 is driven by a driving device (not shown), the web-supporting-roll 141 at the L side is displaced to an optional position relative to the web-supporting roll 14f at the F side.
The web-supporting roll 1 4f at the F side is stationarily secured on the stationary frame 50 via the bearing stands 44. The flange lateral-surface supporting rolls 11 are stationarily secured on the stationary frames 51 via the bearing stands 38. The stationary frames 50 and 51 are members ofthe segment and are integrally constructed by welding or fixing with bolts. In the four-sided supporting-roll assembly shown in Figure 21, both the beam blank 8 and the slab 80 can be supported simply by displacing the web-supporting roll 14/ at the L side so that not only a reduction in the installation cost but also an outstanding improvement in the operability ofthe supporting-roll assembly can be attained.
In Figure 22, the structure of the supporting-roll assembly shown in Figures 15C, 16C, 19C, or 20C is illustrated in detail and a beam blank and a slab supported by this assembly are shown on the right side and the left side, respectively, of the drawing along the line A-A. The central large-diameter roll 95/ at the
L side is rotably supported by bearing stands 110 which are provided on a movable frame 109. The movable frame 109 is reciprocably mounted on vertical columns 120 via screw devices 108. The central large-diameter roll 95f at the F side is rotatable supported by bearing stands 112 provided on a stationary frame 111. A driving shaft 113 is driven by a driving device (not shown) and vertically displaces the movable frame 109 via a coupling 114, a worm device 115, and a screw device 108 so that the position of the central large-diameter roll 95/ at the L side is adjusted relative to the central large-diameter roll 95f at the F side. Both the beam blank 8 and the slab 80 can therefore be easily supported by one type of supporting-roll assembly in which the roll bodies 97f and 97/ are redily interchangeable.
As described hereinabove in detail, different kinds of strands, i.e., a beam blank and a rectangular strand, can be more economically and effectively produced in the CCM of the present invention as compared with the conventional CCMs. Such production can be made even more economical and the installation cost of a CCM is made low when not all the supporting rolls but several main rolls are retractable so as to support different kinds of strands. The CCM of the present invention is very beneficial in respect to the economical production of sections and sheets.
Claims (16)
1. An apparatus for the continuous casting of steel comprising a mold and a plurality of supporting-roll assemblies which are arranged subsequent to said mold, characterized in that: at least one supporting-roll assembly is combined-use assembly capable of supporting a rectangular strand (80) in addition to a beam blank (8); if the apparatus includes a non-combined-use supporting-roll assembly (23, 24), the supporting-roll assembly for a beam blank (8) can be replaced by a supporting-roll assembly for a rectangular strand (80); and the mold (2b) used specifically for a beam blank (8) can be replaced by a mold (2c) used specifically for a rectangular strand (80), thereby allowing the production of a rectangular strand in addition to a beam blank by means of a single continuous-casting apparatus.
2. An apparatus according to claim 1, wherein all the supporting-roll assemblies are capable of supporting a beam blank (8) and a rectangular section (80).
3. An apparatus according to claim 1, wherein; a supporting-roll assembly (23, 24) provided directly below the mold (2b, 2c) supports exclusively either a beam blank (8) or a rectangular strand (80); the supporting-roll assembly (23) for supporting a beam blank can be replaced by the supporting-roll assembly (24) for supporting a rectangular strand and vice versa and supporting-roll assemblies (25) which are arranged subsequentto the supporting-roll assembly directly below the mold are combined-use assemblies which are capable of supporting a rectangular strand in addition to a beam blank.
4. An apparatus according to claim 3, wherein the mold (2b) and the supporting-roll assembly (67), directly below the mold, for supporting a beam blank are mounted on a common framework (68) and, further, the mold and the supporting-roll assembly, directly below the mold, for supporting a rectangular strand are mounted on a common framework.
5. An apparatus according to claim 4, wherein both of the common frameworks are provided with a transmission mechanism with oscillation power therein, the mechanism being coupled with and uncoupled from a motor (90) which generates the oscillation powerwiththe aid of a coupling-changing cylinder (93) which is fixed on a stationary base.
6. An apparatus according to claim, 1, 2, or 3, wherein each of the supporting-roll assemblies comprises at least one pair of first rolls (13,14 and 17) which supports at least the long sides of a beam blank (8) and a rectangular strand (80).
7. An apparatus according to claim 6, wherein said first rolls are web-supporting rolls (14).
8. An apparatus according to claim 6, wherein said first rolls are a pair of supporting rolls (17) for supporting the upper and lower flange surfaces of a beam blank (18).
9. An apparatus according to claim 6, wherein said first rolls are three pairs of supporting rolls (13,
14) for supporting the web and the tip-surfaces of a beam blank (8), and a rectangular strand (80) is supported by said three pairs of supporting rolls (13, 14).
10. An apparatus according to claim 6, wherein said supporting-roll assemblies comprise second rolls (11) for supporting the flange lateral surfaces of a beam bland.
11. An apparatus according to claim 10, wherein said second rolls are capable of supporting a rectangular strand (80).
12. An apparatus according to claim 6, wherein the supporting-roll assemblies comprise, as seen in the casting direction: (a) an eight-sided supportingroll assembly which consists of a pair of supporting rolls (14) for supporting the web of a beam blank (8), two pairs of supporting rolls (13) for supporting exclusively the tip surfaces of the flanges of a beam blank (18), and a pair of supporting rolls (11) for supporting the lateral surfaces of the flanges of a beam blank; (b) a four-sided supporting-roll assembly which consists of a pair of supporting rolls (11) for supporting the lateral surfaces of the flanges of a beam blank (8) and a pair of supporting rolls (14) for supporting at least the web of a beam blank (8); and (c) a two-sided supporting-roll assembly which consists of a pair ofsupporting-rolls (17) for supporting at least the upper and lower flange surfaces of a beam blank (8) a rectangular strand (80) being supported by the supporting rolls of the eight-, four-, and two-sided supporting roll assemblies exceptforthose (13) supporting exclusively the tip and lateral surfaces of the flanges of a beam blank.
13. An apparatus according to claim 7, 9 or 12, wherein the supporting rolls (14) for supporting the web of a beam (8) blank have a length of from 400 to 700 mm.
14. An apparatus according to claim 13, wherein the web height of a beam blank (8) is from 600 to 1 200mm and the width of a slab (80) is from 400to700 mm.
15. An apparatus according to claim 6, characterized in that in a pair of supporting rolls for interchangeably supporting different kinds of strands, the pair of supporting rolls consists of a fixed side roll and a loose side roll, said fixed side roll (14f, 97f) which is brought into contact with the fixed side of a strand (8, 80) being rotably supported by a bearing which is stationarily mounted on a supporting frame (45).
16. An apparatus according to claim 15, wherein at least one of said pair of supporting rolls, said one supporting roll being arranged at the F side of strands, supports the web of a beam blank by the roll bodies (97) where the diameter is great and supports the tip-surfaces of a beam blank (8) by the roll necks (98) where the diameter is small.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12815381A JPS5829548A (en) | 1981-08-18 | 1981-08-18 | Continuous casting device for steel |
| JP12815481A JPS5829549A (en) | 1981-08-18 | 1981-08-18 | Continuous casting device for steel |
| JP14811581A JPS5850164A (en) | 1981-09-19 | 1981-09-19 | Continuous casting installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2105229A true GB2105229A (en) | 1983-03-23 |
| GB2105229B GB2105229B (en) | 1986-06-18 |
Family
ID=27315696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08223786A Expired GB2105229B (en) | 1981-08-18 | 1982-08-18 | Apparatus for continuous casting of steel in different formats |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1204574A (en) |
| DE (1) | DE3230573C2 (en) |
| GB (1) | GB2105229B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391052A2 (en) * | 1989-03-18 | 1990-10-10 | Sms Schloemann-Siemag Aktiengesellschaft | Continuous casting machine for casting of profiled girders |
| US5238047A (en) * | 1991-08-07 | 1993-08-24 | Sumitomo Heavy Industries, Ltd. | Roller apron for beam blank and rectangular strand in continuous casting facilities |
| WO1996001712A1 (en) * | 1994-07-07 | 1996-01-25 | Siderurgica Aristrain Madrid, S.L. | Continuous casting process |
| EP0704262A1 (en) * | 1994-09-30 | 1996-04-03 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Device for the continuous casting of products having a round cross-section and products having a cross-section with flat sides |
| US5520239A (en) * | 1994-11-02 | 1996-05-28 | Sumitomo Heavy Industries Ltd. | Z-shape cast strand withdrawal and straightening unit for continuous casting machine |
| WO2002047849A2 (en) * | 2000-12-16 | 2002-06-20 | Sms Demag Aktiengesellschaft | Method for casting and immediate rolling, and device for the support, guidance and deformation of a metal strand, especially a steel strand |
| WO2009090076A1 (en) * | 2008-01-18 | 2009-07-23 | Sms Siemag Ag | Driving-straightening system for continuous casting plants |
| IT201700067508A1 (en) * | 2017-06-16 | 2018-12-16 | Danieli Off Mecc | CONTINUOUS CASTING METHOD AND ITS APPARATUS |
| US10618107B2 (en) | 2016-04-14 | 2020-04-14 | GM Global Technology Operations LLC | Variable thickness continuous casting for tailor rolling |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3612106A1 (en) * | 1986-04-10 | 1987-10-15 | Voest Alpine Ag | Driving roller arrangement for a continuous-casting installation |
| US5386869A (en) * | 1993-07-01 | 1995-02-07 | Bethlehem Steel Corporation | Variable flange beam blank and method of continuous casting |
| SI1897636T1 (en) * | 2006-09-04 | 2009-12-31 | Concast Ag | Continuous casting machine and method |
| CN101970151A (en) | 2008-01-14 | 2011-02-09 | Sms康卡斯特股份公司 | Continuous casting system particularly for long steel products, and a method for continuous casting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554135Y2 (en) * | 1976-05-18 | 1980-01-30 |
-
1982
- 1982-08-17 CA CA000409596A patent/CA1204574A/en not_active Expired
- 1982-08-17 DE DE19823230573 patent/DE3230573C2/en not_active Expired
- 1982-08-18 GB GB08223786A patent/GB2105229B/en not_active Expired
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391052A2 (en) * | 1989-03-18 | 1990-10-10 | Sms Schloemann-Siemag Aktiengesellschaft | Continuous casting machine for casting of profiled girders |
| EP0391052A3 (en) * | 1989-03-18 | 1991-04-10 | Sms Schloemann-Siemag Aktiengesellschaft | Continuous casting machine for casting of profiled girders |
| US5238047A (en) * | 1991-08-07 | 1993-08-24 | Sumitomo Heavy Industries, Ltd. | Roller apron for beam blank and rectangular strand in continuous casting facilities |
| WO1996001712A1 (en) * | 1994-07-07 | 1996-01-25 | Siderurgica Aristrain Madrid, S.L. | Continuous casting process |
| ES2094686A1 (en) * | 1994-07-07 | 1997-01-16 | Siderurgica Aristrain Madrid S | Continuous casting process |
| EP0704262A1 (en) * | 1994-09-30 | 1996-04-03 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Device for the continuous casting of products having a round cross-section and products having a cross-section with flat sides |
| US5787966A (en) * | 1994-09-30 | 1998-08-04 | Danieli & C. Officine Meccaniche Spa | Device for the continuous casting of products having a round cross-section and products having a cross-section with flat sides |
| AU694994B2 (en) * | 1994-09-30 | 1998-08-06 | Danieli & C. Officine Meccaniche S.P.A. | Device for the continuous casting of products having a round cross-section and products having a cross-section with flat sides |
| US5520239A (en) * | 1994-11-02 | 1996-05-28 | Sumitomo Heavy Industries Ltd. | Z-shape cast strand withdrawal and straightening unit for continuous casting machine |
| WO2002047849A2 (en) * | 2000-12-16 | 2002-06-20 | Sms Demag Aktiengesellschaft | Method for casting and immediate rolling, and device for the support, guidance and deformation of a metal strand, especially a steel strand |
| WO2002047849A3 (en) * | 2000-12-16 | 2003-10-09 | Sms Demag Ag | Method for casting and immediate rolling, and device for the support, guidance and deformation of a metal strand, especially a steel strand |
| US7047621B2 (en) | 2000-12-16 | 2006-05-23 | Sms Demag Ag | Method for casting and immediate rolling, and device for the support, guidance and deformation of a metal strand, especially in steel strand |
| WO2009090076A1 (en) * | 2008-01-18 | 2009-07-23 | Sms Siemag Ag | Driving-straightening system for continuous casting plants |
| US10618107B2 (en) | 2016-04-14 | 2020-04-14 | GM Global Technology Operations LLC | Variable thickness continuous casting for tailor rolling |
| IT201700067508A1 (en) * | 2017-06-16 | 2018-12-16 | Danieli Off Mecc | CONTINUOUS CASTING METHOD AND ITS APPARATUS |
| WO2018229808A1 (en) * | 2017-06-16 | 2018-12-20 | Danieli & C. Officine Meccaniche S.P.A. | Continuous casting method and corresponding apparatus |
| CN110035842A (en) * | 2017-06-16 | 2019-07-19 | 达涅利机械设备股份公司 | Continuous casing and relevant device |
| EA034010B1 (en) * | 2017-06-16 | 2019-12-18 | Даньели Энд К. Оффичине Мекканике С.П.А. | Continuous casting method and apparatus |
| EP3628415A1 (en) | 2017-06-16 | 2020-04-01 | Danieli & C. Officine Meccaniche S.p.A. | Continuous casting method and corresponding apparatus |
| CN110035842B (en) * | 2017-06-16 | 2020-04-28 | 达涅利机械设备股份公司 | Continuous casting method and corresponding apparatus |
| CN111266540A (en) * | 2017-06-16 | 2020-06-12 | 达涅利机械设备股份公司 | Continuous casting method and corresponding apparatus |
| US10758972B2 (en) | 2017-06-16 | 2020-09-01 | Danieli & C. Officine Meccaniche Spa | Continuous casting method and corresponding apparatus |
| US11130172B2 (en) | 2017-06-16 | 2021-09-28 | Danieli & C. Officine Meccaniche Spa | Continuous casting method and corresponding apparatus |
| CN111266540B (en) * | 2017-06-16 | 2021-09-28 | 达涅利机械设备股份公司 | Continuous casting method and corresponding apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3230573A1 (en) | 1983-03-17 |
| GB2105229B (en) | 1986-06-18 |
| DE3230573C2 (en) | 1986-04-03 |
| CA1204574A (en) | 1986-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 711A | Proceeding under section 117(1) patents act 1977 | ||
| PCNP | Patent ceased through non-payment of renewal fee |