CA1169225A - Method and apparatus for casting and rolling metals, especially steel, at high speeds - Google Patents
Method and apparatus for casting and rolling metals, especially steel, at high speedsInfo
- Publication number
- CA1169225A CA1169225A CA000382974A CA382974A CA1169225A CA 1169225 A CA1169225 A CA 1169225A CA 000382974 A CA000382974 A CA 000382974A CA 382974 A CA382974 A CA 382974A CA 1169225 A CA1169225 A CA 1169225A
- Authority
- CA
- Canada
- Prior art keywords
- casting
- rolling
- roughing mill
- mill
- strand
- 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.)
- Expired
Links
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
- B21B1/466—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 non-continuous process, i.e. the cast being cut before rolling
-
- 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
- B21B2031/026—Transverse shifting the stand
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Heat Treatment Of Steel (AREA)
- Laminated Bodies (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method and apparatus for casting and rolling metals, particularly steel, at high speeds. The continuously produced casting strand solidifies completely, and after passing through a temperature equalization line, is supplied to a roughing mill. Subsequently, the casting strand is intermediate and finish rolled in several rolling mills before it is subjected to further treatment or handling in bar, rod, or wire form. The apparatus has two casting lines, which are independent of each other and each includes a casting machine with a secondary cooling line, a temperature equalization line connected thereafter, ant a separating cutter. The apparatus also includes a roughing mill, which is shiftable transverse to the casting direction, and is selective-ly shiftable into the region of the longitudinal axis of either of the two casting strands.
A method and apparatus for casting and rolling metals, particularly steel, at high speeds. The continuously produced casting strand solidifies completely, and after passing through a temperature equalization line, is supplied to a roughing mill. Subsequently, the casting strand is intermediate and finish rolled in several rolling mills before it is subjected to further treatment or handling in bar, rod, or wire form. The apparatus has two casting lines, which are independent of each other and each includes a casting machine with a secondary cooling line, a temperature equalization line connected thereafter, ant a separating cutter. The apparatus also includes a roughing mill, which is shiftable transverse to the casting direction, and is selective-ly shiftable into the region of the longitudinal axis of either of the two casting strands.
Description
~ ~9~25 The present invention relates to a me*hod and an appara~us for casting and rolling metals, especially steel, at high speeds. The continuously produced casting strand solidifies completely~ and after passing through a temperature equali~ation line, is fed to a roughing mill or train of rolls.
Suhsequen~ly, the casting strand is intermediate- and finish-rolled in several rolling trains or rolling mills beore lt Is subjected to further treatment or handling in rod, ~ar, or wire form.
During casting and rolling of steel to produce bar, rod, or wire material, for economic reasons relatively small cross sections must be worked at high.casting speeds. ~or example, a casting and rolling apparatus wlth a theoretical capacity of 65 tons per hour should have a casting cross seckion of appro~imately 16Q mm h~ 9Q mm, resulting in a casting speed of 10 meters per minute. T~.e casting of larger cros5 sections, while maintaining the theoreti-cal capacity~ necessarily leads to lower casting speeds. A casting speed which. is too lo~, however, ~ th bar, rod,.or wire trains entails too low entry speeds~i.n the first rolling stands~of t~e rolling mill, whi.ch is connected subsequent to or do~nstream from the casting ~ach~ne w~ch produces the casting line or strand. The rollers o~ tha associated roll~ng stands or frames are consequently~ver~ ~ighly thermall~ stre$sed and ~ear disproportionately~rapidly.
Nor~ing with smaller casting crocs~ sections and high~r casting speeds has the urther advantage ~hat the roug~Ing mill or train of rollers connected after the casting machine requires a smaller number of rolling stands; this leads to a considerable reduction of inves.tment cost and energy~requ~rement.
The increase of the casting speed, however, is disadvantageous inso-far as the length of the metallurgical segment becomes very large, especially during casting of s*eel. rn the eYent a temperature equalizaticn line is connected after the casing machine and th.e associated primary cooling line, with '~
9 ~ 2 ~
the length of the temperature equalizing line increasing commens.urate with the casting speed, such a casting and rolling apparatus has- a considerable space requirement in the region between the casting machine and the first rolling stand.
In additlon to the indicated di.fficulties caused by the operating conditions, the combination of casting machine and rolling mill always leads to a reduced or less advantageous output capacity. If the casting machine or the rolling mill fails, then the other part of the apparatus is put out of commission or can no longer operate economically.
Casting and rolling apparatus have previousl~ onl~ been successful for pxQducing wire of non-ferrous metals. ~hXs. is primarily due to the fact that the solidification length with non~ferrous metals is considerably less than ~ith steel; the rolling mill conse~uently can be arranged just after the casting ma.chine, ~hich.leads to an acceptable overall length of this non-ferrous casting and rolling plant.
Casting and rolling plants $~r s*eel for casting relativel~ large casting cross sect~ons have also ~een disclosed and have a roughing mill arranged:directly after the secondary cooling line of the casting machine. B~
: way of this. a.~rangement, the solid~fication length sh.oul~ be shortencd,~ith non-metallic inclusions and hollow spaces in the casting.strand being uniformly distributed and closed. ~`owever, the too strong de~ormation of th.e molten ~trand core during the rough milling caused such h~gh tensions that gaps or cracks resulted in the strand core, thus preventing further deforming or working .
In ~iew of these disadvantages, most pTeviously\kno~n cas.~ing and rolling plants for steel were again operated as separate units-, i.e. the casting strand is~ cut to length after conlplete solidification~ and after a short
Suhsequen~ly, the casting strand is intermediate- and finish-rolled in several rolling trains or rolling mills beore lt Is subjected to further treatment or handling in rod, ~ar, or wire form.
During casting and rolling of steel to produce bar, rod, or wire material, for economic reasons relatively small cross sections must be worked at high.casting speeds. ~or example, a casting and rolling apparatus wlth a theoretical capacity of 65 tons per hour should have a casting cross seckion of appro~imately 16Q mm h~ 9Q mm, resulting in a casting speed of 10 meters per minute. T~.e casting of larger cros5 sections, while maintaining the theoreti-cal capacity~ necessarily leads to lower casting speeds. A casting speed which. is too lo~, however, ~ th bar, rod,.or wire trains entails too low entry speeds~i.n the first rolling stands~of t~e rolling mill, whi.ch is connected subsequent to or do~nstream from the casting ~ach~ne w~ch produces the casting line or strand. The rollers o~ tha associated roll~ng stands or frames are consequently~ver~ ~ighly thermall~ stre$sed and ~ear disproportionately~rapidly.
Nor~ing with smaller casting crocs~ sections and high~r casting speeds has the urther advantage ~hat the roug~Ing mill or train of rollers connected after the casting machine requires a smaller number of rolling stands; this leads to a considerable reduction of inves.tment cost and energy~requ~rement.
The increase of the casting speed, however, is disadvantageous inso-far as the length of the metallurgical segment becomes very large, especially during casting of s*eel. rn the eYent a temperature equalizaticn line is connected after the casing machine and th.e associated primary cooling line, with '~
9 ~ 2 ~
the length of the temperature equalizing line increasing commens.urate with the casting speed, such a casting and rolling apparatus has- a considerable space requirement in the region between the casting machine and the first rolling stand.
In additlon to the indicated di.fficulties caused by the operating conditions, the combination of casting machine and rolling mill always leads to a reduced or less advantageous output capacity. If the casting machine or the rolling mill fails, then the other part of the apparatus is put out of commission or can no longer operate economically.
Casting and rolling apparatus have previousl~ onl~ been successful for pxQducing wire of non-ferrous metals. ~hXs. is primarily due to the fact that the solidification length with non~ferrous metals is considerably less than ~ith steel; the rolling mill conse~uently can be arranged just after the casting ma.chine, ~hich.leads to an acceptable overall length of this non-ferrous casting and rolling plant.
Casting and rolling plants $~r s*eel for casting relativel~ large casting cross sect~ons have also ~een disclosed and have a roughing mill arranged:directly after the secondary cooling line of the casting machine. B~
: way of this. a.~rangement, the solid~fication length sh.oul~ be shortencd,~ith non-metallic inclusions and hollow spaces in the casting.strand being uniformly distributed and closed. ~`owever, the too strong de~ormation of th.e molten ~trand core during the rough milling caused such h~gh tensions that gaps or cracks resulted in the strand core, thus preventing further deforming or working .
In ~iew of these disadvantages, most pTeviously\kno~n cas.~ing and rolling plants for steel were again operated as separate units-, i.e. the casting strand is~ cut to length after conlplete solidification~ and after a short
2 5 rewarming, the casting strand i5 reduced in cross section by rolling to such an extent that the casting strand is suitable as a rough or preliminary material for a wire- or fine-steel mill or train.
It is an object of the present inventlon to provide a.method and apparatus for casting and rolling, especially of steel~ uhich permits a high output capacit~ at relati.vel~ low investment cost.
The method and apparatus should additionally be suitably so equipped that the space requirement, especially that ~hich is made necessary at high casting speeds, ls reduced.
The invention.provides an apparatus for casting and rolling metals at high speeds, said apparatus comprlsing; two casting machines for respectively continuously producing a casting strand~ said casting strands being independent of one another; a secondar~ cooling line associ~ted with.each casting machine;
respective temperature equalization lines connected after each secondary cooling line; respective cutters connected after each temperature equalization line; a roughing mill connected after said cutters and movable transverse to th.e casting directian, said roughing mill being selectively movable into the region of the longitudinal axis of eith.er of said two casting.strands for receiving the respectiye casting strand; and a plurali*y of roll~ng mills connected after said roughi:ng mill for intermediate- and finish-rolling of said one casting strand~
The invention also provides a ~ethod for casting and rollin~ metals at high speeds, said.method ~omprising the stepS of. continuously producing a casting strand; completely solidif~ing said casting strand; passing said casting strand through a temperature equalizati.on line; feeding and passing said cast-ing strand to and through a roughing.~ill; intermediate- and inish-rolling said casting strand; reversing sa.id casting strand by 180 after it passes -- .3 ~ ~ 6922.5 through said roughing mill but prior to said finish-rolling; maintaining the chang~ in direction of movement, which ls now opposite to the casting direction, during subsequent handling; and subjecting said casting strand to further handling.
The concept for meeting the o~ject of the present invention basically comprises equipping the casting and rolllng apparatus with two complete casting lines, which are lndependent of each other, with a slngle roughing mill or train being selectively associated therewith, and being movable transverse to the casting direction. T~e second casting line is put into operation upon failure of the other casting line, so that the subsequently connected rolllng train or mill can continue to operate ater a short lnterruption. Aside from the cost saving brought about by~the utilization of only one roughing mill, the $hiftab1e arrangement of the roughing mill has the advantage that the cast-ing strand can be introduced~ithout deflection into the rolling stands of the roughing mill.
Each casting line can additionally be equipped With a driye or pull-ing unit; this pulling unit is located ater the temperature equalization line, advantageously in the region bet~een this temperature equalizati`on line and the subsequent cutters.
The present invent~Ye apparatu~ is expediently~further e~uipped ln such a manner that in the region be*ween the roughing mlli and the f~n~shlng mill, which completes the rolling mill treatment, there is arranged a 180 reverslng unit w~ch determines the direction of movement o~ the castlng $trand during the further handling steps or procedure.
The 180 re~ersing unit ls, in any~case, arranged In a region after the roughing mill, i.e. in a region in ~hich the cross section o~ the rough rolled casting strand particlpates in the deormation connected ~ith the 1~92~5 reversal wi~hout an~ particular diffIculty. As a result of the reversal of the casting strand, and its return within the rolling mill, the length of the casting and rolling apparatus can in certain clrcumstances be shortened up to 50%; th.is leads not only to a reduction of the room or building length, but also ~o a lowering of the installation costs for the oil-, water-~ air-, hydraulic-, and electrical-supply of the casting and rolling apparatus.
If the inventive apparatus has two intermediate mills connected after the roughing mill, the 180 reversing unit can be located ahead of the first intermediate mill., but in any event is located before the seccnd intermediate mill; in accordance ~ith the operating requirements, it may also be expedient ~o arrange the 180~ reversing unit between the two intermediate mills.
To reduce the cost for the shi:fting drive, the rolling stands of the roughing mill are shi~table ~ith respect to the stationary roller drive thereof.
With an especially preferred embodiment of the present invention, the rolling stands of the roughing mill are respectiyely arranged on individual shift frames and are connected by~Cardan or universal~joint shaft means with their roller drives.
If the casting and rolling appara~us is to serve for wire production, the finishing mill is preferably followed by at least one cooling line as well as a winding placement means and a collectIng station; a primar~ cooling line may be connected before the ~inding placement means, and a secondary cooling line may be connected after the ~inding placement means.
The casting strandl ~hich is selectively procluced by different casting machines, is passed, by shifting th.e rolling stands of the roughing mill transyerse to the casting direction, into the effectiye range thereof.
The advantages of the present invention will appear more clearly _ 5 _ :~L69225 from the following specîfication in connection with the accompanying drawings, in which:
~ igure 1 schematically shows the arrangement of a casting and rolling apparatus in accordance with one embodiment of the present invention; and ~ igure 2 schematically illustrates the arrangement of a rolling stand, of the roughing mill or train illustrated in ~igure 1, which is shiftable transverse to the casting direction.
Referring now to the drawings in detail, the inventive combined casting and rolling apparatus of Figure 1 has two side-by-side casting lines 1 and la, which are independent of each other and respectivel~ comprise a casting machine 2 or 2a, a secondary cooling line 3 or 3a subsequent to the casting machine, a temperature equalization line 4 or ~a, a drive or pulling unit S or 5a, and a cutting or separating cutter 6 or 6a.
~ single roughing mill or train 7, which is comn to both casting lines 1 and la, is connected to t~e casting lines which are preferably built up in this manner. The roughing mill 7 in the illustrated embodiment comprises three rolling stands 8, 9 and 10, and is movable transverse to the cas~ting direction ~arro~ in such a manner that the roughing mill lies either in the region of the longitudinal axis 12 of the casting line 1, or in the region of the longitudinal axis 12a o~ the casting line la. Both mentioned operating posltions, in which the roughing mill 7 is associated with the casting line 1 or the casting line la, are designated in the drawing either by a full line or by dot~dash lines; the transverse shiftability of the roughing mill 7 is indicated by t~e double arrow 13.
By utilizing two casting lines 1 and la, which are independent of each other and are arranged side-b~-side, maintenance of production of the casting and rolling apparatus is assured even when one of the casting lines,
It is an object of the present inventlon to provide a.method and apparatus for casting and rolling, especially of steel~ uhich permits a high output capacit~ at relati.vel~ low investment cost.
The method and apparatus should additionally be suitably so equipped that the space requirement, especially that ~hich is made necessary at high casting speeds, ls reduced.
The invention.provides an apparatus for casting and rolling metals at high speeds, said apparatus comprlsing; two casting machines for respectively continuously producing a casting strand~ said casting strands being independent of one another; a secondar~ cooling line associ~ted with.each casting machine;
respective temperature equalization lines connected after each secondary cooling line; respective cutters connected after each temperature equalization line; a roughing mill connected after said cutters and movable transverse to th.e casting directian, said roughing mill being selectively movable into the region of the longitudinal axis of eith.er of said two casting.strands for receiving the respectiye casting strand; and a plurali*y of roll~ng mills connected after said roughi:ng mill for intermediate- and finish-rolling of said one casting strand~
The invention also provides a ~ethod for casting and rollin~ metals at high speeds, said.method ~omprising the stepS of. continuously producing a casting strand; completely solidif~ing said casting strand; passing said casting strand through a temperature equalizati.on line; feeding and passing said cast-ing strand to and through a roughing.~ill; intermediate- and inish-rolling said casting strand; reversing sa.id casting strand by 180 after it passes -- .3 ~ ~ 6922.5 through said roughing mill but prior to said finish-rolling; maintaining the chang~ in direction of movement, which ls now opposite to the casting direction, during subsequent handling; and subjecting said casting strand to further handling.
The concept for meeting the o~ject of the present invention basically comprises equipping the casting and rolllng apparatus with two complete casting lines, which are lndependent of each other, with a slngle roughing mill or train being selectively associated therewith, and being movable transverse to the casting direction. T~e second casting line is put into operation upon failure of the other casting line, so that the subsequently connected rolllng train or mill can continue to operate ater a short lnterruption. Aside from the cost saving brought about by~the utilization of only one roughing mill, the $hiftab1e arrangement of the roughing mill has the advantage that the cast-ing strand can be introduced~ithout deflection into the rolling stands of the roughing mill.
Each casting line can additionally be equipped With a driye or pull-ing unit; this pulling unit is located ater the temperature equalization line, advantageously in the region bet~een this temperature equalizati`on line and the subsequent cutters.
The present invent~Ye apparatu~ is expediently~further e~uipped ln such a manner that in the region be*ween the roughing mlli and the f~n~shlng mill, which completes the rolling mill treatment, there is arranged a 180 reverslng unit w~ch determines the direction of movement o~ the castlng $trand during the further handling steps or procedure.
The 180 re~ersing unit ls, in any~case, arranged In a region after the roughing mill, i.e. in a region in ~hich the cross section o~ the rough rolled casting strand particlpates in the deormation connected ~ith the 1~92~5 reversal wi~hout an~ particular diffIculty. As a result of the reversal of the casting strand, and its return within the rolling mill, the length of the casting and rolling apparatus can in certain clrcumstances be shortened up to 50%; th.is leads not only to a reduction of the room or building length, but also ~o a lowering of the installation costs for the oil-, water-~ air-, hydraulic-, and electrical-supply of the casting and rolling apparatus.
If the inventive apparatus has two intermediate mills connected after the roughing mill, the 180 reversing unit can be located ahead of the first intermediate mill., but in any event is located before the seccnd intermediate mill; in accordance ~ith the operating requirements, it may also be expedient ~o arrange the 180~ reversing unit between the two intermediate mills.
To reduce the cost for the shi:fting drive, the rolling stands of the roughing mill are shi~table ~ith respect to the stationary roller drive thereof.
With an especially preferred embodiment of the present invention, the rolling stands of the roughing mill are respectiyely arranged on individual shift frames and are connected by~Cardan or universal~joint shaft means with their roller drives.
If the casting and rolling appara~us is to serve for wire production, the finishing mill is preferably followed by at least one cooling line as well as a winding placement means and a collectIng station; a primar~ cooling line may be connected before the ~inding placement means, and a secondary cooling line may be connected after the ~inding placement means.
The casting strandl ~hich is selectively procluced by different casting machines, is passed, by shifting th.e rolling stands of the roughing mill transyerse to the casting direction, into the effectiye range thereof.
The advantages of the present invention will appear more clearly _ 5 _ :~L69225 from the following specîfication in connection with the accompanying drawings, in which:
~ igure 1 schematically shows the arrangement of a casting and rolling apparatus in accordance with one embodiment of the present invention; and ~ igure 2 schematically illustrates the arrangement of a rolling stand, of the roughing mill or train illustrated in ~igure 1, which is shiftable transverse to the casting direction.
Referring now to the drawings in detail, the inventive combined casting and rolling apparatus of Figure 1 has two side-by-side casting lines 1 and la, which are independent of each other and respectivel~ comprise a casting machine 2 or 2a, a secondary cooling line 3 or 3a subsequent to the casting machine, a temperature equalization line 4 or ~a, a drive or pulling unit S or 5a, and a cutting or separating cutter 6 or 6a.
~ single roughing mill or train 7, which is comn to both casting lines 1 and la, is connected to t~e casting lines which are preferably built up in this manner. The roughing mill 7 in the illustrated embodiment comprises three rolling stands 8, 9 and 10, and is movable transverse to the cas~ting direction ~arro~ in such a manner that the roughing mill lies either in the region of the longitudinal axis 12 of the casting line 1, or in the region of the longitudinal axis 12a o~ the casting line la. Both mentioned operating posltions, in which the roughing mill 7 is associated with the casting line 1 or the casting line la, are designated in the drawing either by a full line or by dot~dash lines; the transverse shiftability of the roughing mill 7 is indicated by t~e double arrow 13.
By utilizing two casting lines 1 and la, which are independent of each other and are arranged side-b~-side, maintenance of production of the casting and rolling apparatus is assured even when one of the casting lines,
3~22~
and especially one of the casting machines, fails. The casting madhines 2 or 2a are embodied in a known manner, and in particular can comprise two casting strands or pouring conveyors which delimit the casting cross section, or can comprise a casting or mold disc which cooperates with a suitably embodied casting strand or pouring conveyor.
The liquid or molten steel to be worked is cast into a casting strand in one of the two casting machines, for example in the casting machine 2, where it receives a strand shell which is approximately 10 to 20 mm thick. In the adjoining secondar~ cooling line 3, the casting strand completely solidifies under the influence of intensive water cooling before the temperature drop in the temperature equaliæation line 4 decreases between the strand shell and the strand core, and the casting strand, if necessary~ is again heated to the rolling temperature.
The rolling mechanism adjoins the two casting lines 1 and la, and comprises the already mentioned roughing mill 7, a first intermediate mill 14, a 180=reversing unit 15, a second intermedi~te mill 16, a finishing mill or train 17, a primar~ coollng line 18, a winding placement means 19, a secondary cooling line 20, and a collecting station 21. The casting strand, w~ich is pre-rolled or rough rolled in the roughing mill 7, and is reduced to a suitable cross section, is further deformed in the intermediate mills 14 and 16 ~efore it receives the desired wire cross section during passage through the finishing mill 17. The casting strand passes through the 180 reversing unit lS in the region between the roughing mill 7 and the finishing mill 17, and in particular, in ~he illustrated embodiment, between the two intermediate mills 14 and 16.
The casting strand consequently receives a direction of movement 22 opposite to the casting direction 11; this direction of movement 22 is maintained during the subsequent handling or treatment processes.
2 ~
After the finishing rolling, the casting strand, for example in the shape of a wire, passes through the primary cooling line 18 of the rolling mechanism~ where it is placed into coils or windings by means of the winding placement means 19. From there the casting strand is guided or passed through the secondary cooling line 20 of the rolling mechanism before it is collected in the form of wire coils in the collecting station 21.
The reversing of the casting strand, which, depending upon the cross section, can be underta~en before, between, and after the two intermediate mills 14 and 16, leads to a considerable reduction of the space req~lirement and installation cost for the supply devices~ of the casti.ng and rolling apparatus.
The s~iftable arrange~ment of the roughing mill 7 eliminates t~e need to deflect the casting strand, ~hich.in this region stil~ has the full casting cross section.
In the embodiment of F~gure 2, that rolling stand 8 of the roughing mill 7 located in front, in the cas*ing direction, is shiftable back and forth in the direction of the double arro~ 13. The schematically illustrated rollers 8' and 8" are connected by Cardan or universal-joint shafts 23 ~ith a gear unit 24, and throug~ the interposition of a coupling 25, are connected ~ith a motor 2~ which serves as a roller drive. The parts 24, 25, and 26 are stationarily molmted on a foundation or base 27 in contrast to the rolling stand 8, ~hich is shiftabla back and forth.
The rolling stand 8, as is also true for the additional not illu5-trated ralling stands 9 and 10 of the roughing mill 7, is held or kept movable on a shift frame 28 ~ithin a stationary guide 2~. The shift frame 28 is pivotably connected with the piston rod 3Q.' of a cylinder-piston unit or actuator 30 which serves as a shi$t dr~ve and in turn is held stationary on a ~ 8 ~
9~
bracket 31.
The shift frame 28 of the rolling stand 8 is equipped with a clamping device 32 which clamps the shift frame 28 in the selected operating position ~i~h the guide 29, thus holding it stationary.
In the operating position illustrated in Figure 2, the rolling stand 8, and the subsequent rolling stands of the roughing mill, occupy a position in which the roller middle 33 coincides with the longitudinal axis 12 indicated in F~gure l; the second operating position of the rolling stand 8 is indicated by dot-dash lines as in Figure 1.
~n a manner differing rom the aforementioned embodiment of the roll-ing stands of the roughing mill 7, several of these rolling stands, under suitable circumstances, can also be associated upon a common shi~t frame; for example, it is possible to respectively arrange two directly sequential rolling stands of the roughing mill on a common sh~ft frame.
Th~ carrangement of the roller drive and the shi:ft drive, ~hich is stationary wlt~ respect to the roll~ng stands, has~the advantage t~at t~e in-stallation of these drives is simplified and the size of the masses to be moved is kept as small as yossi~le.
The casting and r~lling appara~us, and possi~ly the 180~reversing Z0 unit, in a manner differing from the lllustrated embodiment of ~i`gure 1, which includes a su~sequently connected rolled wire mill or train, can also cooperate with a rolling mill for producing small section or fine steel.
The present inventiQn is, of course, in no wa~ restricted to the specific di-sclosl1re of the specification and drawings, but also encompasses any modifications wi*hin the scope of the appended claims.
and especially one of the casting machines, fails. The casting madhines 2 or 2a are embodied in a known manner, and in particular can comprise two casting strands or pouring conveyors which delimit the casting cross section, or can comprise a casting or mold disc which cooperates with a suitably embodied casting strand or pouring conveyor.
The liquid or molten steel to be worked is cast into a casting strand in one of the two casting machines, for example in the casting machine 2, where it receives a strand shell which is approximately 10 to 20 mm thick. In the adjoining secondar~ cooling line 3, the casting strand completely solidifies under the influence of intensive water cooling before the temperature drop in the temperature equaliæation line 4 decreases between the strand shell and the strand core, and the casting strand, if necessary~ is again heated to the rolling temperature.
The rolling mechanism adjoins the two casting lines 1 and la, and comprises the already mentioned roughing mill 7, a first intermediate mill 14, a 180=reversing unit 15, a second intermedi~te mill 16, a finishing mill or train 17, a primar~ coollng line 18, a winding placement means 19, a secondary cooling line 20, and a collecting station 21. The casting strand, w~ich is pre-rolled or rough rolled in the roughing mill 7, and is reduced to a suitable cross section, is further deformed in the intermediate mills 14 and 16 ~efore it receives the desired wire cross section during passage through the finishing mill 17. The casting strand passes through the 180 reversing unit lS in the region between the roughing mill 7 and the finishing mill 17, and in particular, in ~he illustrated embodiment, between the two intermediate mills 14 and 16.
The casting strand consequently receives a direction of movement 22 opposite to the casting direction 11; this direction of movement 22 is maintained during the subsequent handling or treatment processes.
2 ~
After the finishing rolling, the casting strand, for example in the shape of a wire, passes through the primary cooling line 18 of the rolling mechanism~ where it is placed into coils or windings by means of the winding placement means 19. From there the casting strand is guided or passed through the secondary cooling line 20 of the rolling mechanism before it is collected in the form of wire coils in the collecting station 21.
The reversing of the casting strand, which, depending upon the cross section, can be underta~en before, between, and after the two intermediate mills 14 and 16, leads to a considerable reduction of the space req~lirement and installation cost for the supply devices~ of the casti.ng and rolling apparatus.
The s~iftable arrange~ment of the roughing mill 7 eliminates t~e need to deflect the casting strand, ~hich.in this region stil~ has the full casting cross section.
In the embodiment of F~gure 2, that rolling stand 8 of the roughing mill 7 located in front, in the cas*ing direction, is shiftable back and forth in the direction of the double arro~ 13. The schematically illustrated rollers 8' and 8" are connected by Cardan or universal-joint shafts 23 ~ith a gear unit 24, and throug~ the interposition of a coupling 25, are connected ~ith a motor 2~ which serves as a roller drive. The parts 24, 25, and 26 are stationarily molmted on a foundation or base 27 in contrast to the rolling stand 8, ~hich is shiftabla back and forth.
The rolling stand 8, as is also true for the additional not illu5-trated ralling stands 9 and 10 of the roughing mill 7, is held or kept movable on a shift frame 28 ~ithin a stationary guide 2~. The shift frame 28 is pivotably connected with the piston rod 3Q.' of a cylinder-piston unit or actuator 30 which serves as a shi$t dr~ve and in turn is held stationary on a ~ 8 ~
9~
bracket 31.
The shift frame 28 of the rolling stand 8 is equipped with a clamping device 32 which clamps the shift frame 28 in the selected operating position ~i~h the guide 29, thus holding it stationary.
In the operating position illustrated in Figure 2, the rolling stand 8, and the subsequent rolling stands of the roughing mill, occupy a position in which the roller middle 33 coincides with the longitudinal axis 12 indicated in F~gure l; the second operating position of the rolling stand 8 is indicated by dot-dash lines as in Figure 1.
~n a manner differing rom the aforementioned embodiment of the roll-ing stands of the roughing mill 7, several of these rolling stands, under suitable circumstances, can also be associated upon a common shi~t frame; for example, it is possible to respectively arrange two directly sequential rolling stands of the roughing mill on a common sh~ft frame.
Th~ carrangement of the roller drive and the shi:ft drive, ~hich is stationary wlt~ respect to the roll~ng stands, has~the advantage t~at t~e in-stallation of these drives is simplified and the size of the masses to be moved is kept as small as yossi~le.
The casting and r~lling appara~us, and possi~ly the 180~reversing Z0 unit, in a manner differing from the lllustrated embodiment of ~i`gure 1, which includes a su~sequently connected rolled wire mill or train, can also cooperate with a rolling mill for producing small section or fine steel.
The present inventiQn is, of course, in no wa~ restricted to the specific di-sclosl1re of the specification and drawings, but also encompasses any modifications wi*hin the scope of the appended claims.
Claims (11)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An apparatus for casting and rolling metals at high speeds, said apparatus comprising: two casting machines for respectively continuously producing a casting strand, said casting strands being independent of one an-other; a secondary cooling line associated with each casting machine; res-pective temperature equalization lines connected after each secondary cooling line; respective cutters connected after each temperature equalization line;
a roughing mill connected after said cutters and movable transverse to the casting direction, said roughing mill being selectively movable into the region of the longitudinal axis of either of said two casting strands for receiving the respective casting strand; and a plurality of rolling mills connected after said roughing mill for intermediate- and finish rolling of said one casting strand.
a roughing mill connected after said cutters and movable transverse to the casting direction, said roughing mill being selectively movable into the region of the longitudinal axis of either of said two casting strands for receiving the respective casting strand; and a plurality of rolling mills connected after said roughing mill for intermediate- and finish rolling of said one casting strand.
2. An apparatus according to claim 1, in which. said plurality of rolling mills includes a finishing mill, and which includes a 180° reversing unit arranged in the region between said roughing mill and said finishing mill, said reversing unit determining the direction of movement of said one casting strand during further handling.
3. An apparatus according to claim 2, in which said plurality of rolling mills further includes two intermediate mills which, when viewed in the direc-tion of movement of said casting strand, are connected after said roughing mill and prior to said finishing mill, said 180° reversing unit being arranged prior to that intermediate mill arranged the furthest from said roughing mill.
4. An apparatus according to claim 3, in which said reversing unit is arranged between said roughing mill and that intermediate mill closest to said roughing mill.
5. An apparatus according to claim 3, in which said reversing unit is arranged between said two intermediate mills.
6. An apparatus according to claim 3, in which said roughing mill includes a stationary roller drive, and rolling stands which are shiftable relative to said roller drive.
7. An apparatus according to claim 6, in which said rollering stands of said roughing mill are respectively arranged on shift frames and are connected by shafts to their roller drive.
8. An apparatus according to claim 7, in which said finishing mill is followed by at least one cooling line as well as means for placing windings of said one casting strand, and a collecting station.
9. An apparatus according to claim 8, which includes a primary cooling line prior to said means for placing windings, and a secondary cooling line thereafter.
10. A method for casting and rolling metals at high speeds, said method comprising the steps of: continuously producing a casting strand; completely solidifying said casting strand; passing said casting strand through a tem-perature equalization line; feeding and passing said casting strand to and through a roughing mill; intermediate- and finish-rolling said casting strand;
reversing said casting strand by 180° after it passes through said roughing mill but prior to said finish-rolling; maintaining the change in direction of movement, which is now opposite to the casting direction, during subse-quen handling; and subjecting said casting strand to further handling.
reversing said casting strand by 180° after it passes through said roughing mill but prior to said finish-rolling; maintaining the change in direction of movement, which is now opposite to the casting direction, during subse-quen handling; and subjecting said casting strand to further handling.
11. A method according to claim 10, which includes the steps of selec-tively producing said casting strand with different casting machines, and passing said casting strand into the effective range of rolling stands of said roughing mill by shifting said rolling stands transverse to the casting direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3029222.9 | 1980-08-01 | ||
| DE19803029222 DE3029222A1 (en) | 1980-08-01 | 1980-08-01 | METHOD AND SYSTEM FOR CASTING ROLLING METALS, ESPECIALLY STEEL, AT HIGH SPEEDS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1169225A true CA1169225A (en) | 1984-06-19 |
Family
ID=6108678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000382974A Expired CA1169225A (en) | 1980-08-01 | 1981-07-31 | Method and apparatus for casting and rolling metals, especially steel, at high speeds |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0045400B1 (en) |
| JP (1) | JPS5752505A (en) |
| AT (1) | ATE8215T1 (en) |
| AU (1) | AU542054B2 (en) |
| BR (1) | BR8104981A (en) |
| CA (1) | CA1169225A (en) |
| DE (1) | DE3029222A1 (en) |
| NO (1) | NO812477L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4041205A1 (en) * | 1990-12-21 | 1992-06-25 | Schloemann Siemag Ag | Hot rolling of strip from thin cast sections |
| DE4234455A1 (en) * | 1992-10-13 | 1994-04-14 | Schloemann Siemag Ag | Process and plant for rolling out hot wide strip from continuously cast thin slabs |
| DE10330210A1 (en) * | 2003-07-03 | 2005-01-20 | Sms Demag Ag | Apparatus for producing hot-rolled hot strip, in particular from strip-shaped continuously cast semi-finished material |
| AT513298B1 (en) * | 2012-08-20 | 2017-03-15 | Primetals Technologies Austria GmbH | Interstate area of a cast-rolled composite plant |
| CN110180899B (en) * | 2019-06-13 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Open type housing and combination for high-speed casting and rolling machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1527706A1 (en) * | 1966-01-19 | 1970-01-22 | Schloemann Ag | Device for moving roll stands or sets of rolls of roll stands transversely to the direction of rolling |
| AT297640B (en) * | 1969-04-23 | 1972-04-10 | Voest Ag | Roll stand and rolling mill system, especially for the deformation of a cast strand exiting directly from a continuous casting system |
| US3786664A (en) * | 1972-03-20 | 1974-01-22 | Steel Corp | Rolling mill module |
| GB1469241A (en) * | 1973-06-25 | 1977-04-06 | Morgan Construction Co | Method and apparatus for continuously casting and rolling non- ferrous product |
| JPS5545530A (en) * | 1978-09-25 | 1980-03-31 | Chiyoda Koutetsu Kogyo Kk | Direct rolling equipment for continuous casting having moving type continuous heating furnaces |
| JPS55147405A (en) * | 1979-05-04 | 1980-11-17 | Nippon Steel Corp | Rolling mill |
-
1980
- 1980-08-01 DE DE19803029222 patent/DE3029222A1/en not_active Withdrawn
-
1981
- 1981-07-09 AU AU72698/81A patent/AU542054B2/en not_active Ceased
- 1981-07-11 AT AT81105410T patent/ATE8215T1/en active
- 1981-07-11 EP EP81105410A patent/EP0045400B1/en not_active Expired
- 1981-07-20 NO NO812477A patent/NO812477L/en unknown
- 1981-07-31 JP JP56119418A patent/JPS5752505A/en active Pending
- 1981-07-31 CA CA000382974A patent/CA1169225A/en not_active Expired
- 1981-07-31 BR BR8104981A patent/BR8104981A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU542054B2 (en) | 1985-02-07 |
| BR8104981A (en) | 1982-04-20 |
| EP0045400B1 (en) | 1984-07-04 |
| AU7269881A (en) | 1982-02-04 |
| EP0045400A1 (en) | 1982-02-10 |
| DE3029222A1 (en) | 1982-03-04 |
| JPS5752505A (en) | 1982-03-29 |
| ATE8215T1 (en) | 1984-07-15 |
| NO812477L (en) | 1982-02-02 |
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| MKEX | Expiry |