CA1040384A - Tundish transfer apparatus - Google Patents
Tundish transfer apparatusInfo
- Publication number
- CA1040384A CA1040384A CA225,388A CA225388A CA1040384A CA 1040384 A CA1040384 A CA 1040384A CA 225388 A CA225388 A CA 225388A CA 1040384 A CA1040384 A CA 1040384A
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- Canada
- Prior art keywords
- car
- tundish
- carriage
- strand
- 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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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A tundish transfer apparatus includes a self-propelled car that is movable in a first direction perpendicular to the plane of a continuously cast strand or strands, and a tundish carriage on the car. The carriage supports a tundish and the carriage is movable in a second direction that is perpendicular to the first direction. The tundish is rotatable to various positions for dumping, cleaning, nozzle repairing or replacing, and for preheating.
A tundish transfer apparatus includes a self-propelled car that is movable in a first direction perpendicular to the plane of a continuously cast strand or strands, and a tundish carriage on the car. The carriage supports a tundish and the carriage is movable in a second direction that is perpendicular to the first direction. The tundish is rotatable to various positions for dumping, cleaning, nozzle repairing or replacing, and for preheating.
Description
Bsck~round of the Inventlon In most multiple strant contlnuous castlng machlne lnstallatlons, turtdlsh transfer cars are ln~talled to move the tundlsh from over the molds at the completlon of a cast or serles of casts to per~lt dumplng of slag, tundlsh cleanlng, lnstallatlon of tundish nozzles from outslde, preheatlng of the tundlsh for reuse, and to clear the area above the molds to permlt mold changing and cleanlng. At the present tlme the tundish transfer cars travel elther on ralls ln the floor or on overhead tracks, traversing back and forth elther ln the dlrectlon of caotlng strant runout or perpendlcular to the ca3tlng strand runout.
~.
Each type of tundlsh transfer càr lnstallatlon and each method of con-; ventlond tuntlsh transfer has atvantages and dlsadvantages.
; In thoJe ca6es where the tundlsh transfer car travels ` b~ck ana forth ~n the dlrectlon of the ca~t otrsnd and the runout tables, J, ' ~; tbe tundlsh ls moved back away from the mold~ after completlon of the cast. In such posltlon, any resldue ln the tundlsh can be dumped ~ l ~etiately lnto a tundlsh splllover box; the tundlsh can be washed wlth ;j oxygen whlle lt 18 ln the tlltet positlon; external nozzles, lf any, ~,;
c n be removet and new nozzles lnstallet as requlret; and then the tuntlsh can be lnverted and moved to a preheat positlon at the rear of the castlng ; ~achlne ~tructure where lt 18 prepared for the next cast.
In thls partlcular lnstance where the tundlsh transfer j c~r mwves ln the dlrectlon of the cast strand, allgnment of the tundlsh ;,~
nozzles over the center of the molds 18 ea~lly aceompllshed; changlng nozzles 18 easlly accompllshet, and no extra allgnment mechanlsm 18 requlred for movlng the tundlsh ln the ~trand runout dlrectlon.
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However, certaln dlsadvantages are apparent ln tho~e lnstances where the tundlsh car moves ln the dlrectlon of the cast strand.
:,:, Some of the ~ore l~portant dlsadvantages are: 1) the cleanlng operatlon, occurrlng tlrectly behlnd the castlng molds, doe~ hamper the mold operators .,~"~ ~
104~384 ln startln~ to prepare the mold~ for the next ca~t becau~e of the sparks and the lntense heat generated durlng the cleanlng operatlon; 2) the srea behind the sp~llover box 18 llmlted frequently and the removal and replacement of any external nozzles 18 hampered tue to a lack of adequate worklng area; 3) then, too, the lnstallstlon oS a secont tundlsh transfer car i8 very tlfflcult and oftentlmes 18 imprsctlcal; ant 4) slnce the tuntlsh preheat statlon is tlrectly behlnd the pourlng statlon, the preheat stat~on could be tamaged ~hoult lt become necessary to qulckly move a pourlng ladle wlth a running Rtopper to an emergency latle located behlnd the structure.
In other lnstances where the tundi6h transfer car travels back and orth ln a tlrectlon that i8 perpendlcular to the plsne of the ca~t strand, certaln atvantage~ ant tlsadvantages shoult be pointet out.
It 1- an atvantage that a secont tuntlsh car can be lnstallet, or that pro~l~lons for a ~econd car can be mate wlthout any partlcular tlfflculty;
- that tundlsh tumplng ant cleanlng operatlons can be performet at the lte of the molts, ant no lnterference occurs wlth molt preparation for the next cast; the more space 18 avallable Sor the removal ant replacement of external nozzles; that the tuntlsh preheat positlon 18 to one slte of ., .
the molts ant it cannot be tamaget turlng the movement of a pourlng latle ~ wlth a runnlng stopper; ant that minor atJustment oS the tundl~h nozzles ; ln a tlrectlon perpentlcular to the plane of the cast strant is reatlly ; ccompllshet.
Howcver, ln ~uch other instances there are tisadvantsges among whlch the followlng are the most prevalent ones: that the tuntisb cannot be tumped lm~etiately after the cast; that slag or lten steel can drip from the tundlsh nozzles onto the molds when the tuntlsh 18 ~ movet to the dump and cleanout posltlon; that dumplng, cleanlng, removlng - ant replaclng of nozzles and preheatlng occur at the same locatlon whlch , . . .
necessltates movlng the preheat burners lnto posltlon after the clean out ':, ~ over a box contalnlng hot ~lag ant ~teel. Further ralls on whlch the . ,:
: - 2 -.
: r 1~4~)384 tundish transfer car moves can become damaged or covered with hot metal should a spill occur. At such time, an emergency ladle transfer must be employed to locate an emergency ladle at the side of the machine, since the tundish transfer car tracks prevent the lifting of the ladle vertically. Furthermore, special arrangements must be made on the tundish car to move the center-line of the tundish nozzles so as to align them over the center of the molds when chang-ing mold sizes on a curved mold type of casting machine.
The present invention provides an apparatus for transferring a tundish relative to a continuous casting mold from which a cast strand is withdrawn comprising:
a) a car disposed relative to said mold and supporting a carriage carrying said tundish;
b) means for moving said car in a first direction perpendicular to a plane contalning 6ald strand;
c) mean~ for movlng sald carriage relatlve to said car in a second dlrectlon perpendlcular to sald flrst directlon;
d) means plvotally supportlng sald tundlsh ln sald carrlage for rotatlon about an axls perpendicular to said plane; and e) powered means mounted to sald carrlage for rotating said tundish.
More partlcularly the transfer apparatus lncludes a car having wheels engaglng rails disposed at a level above a working floor around the mold with a carrlage carrylng a tundish supported on the car, ; A motor may operate through a speed-reducer that turns the wheels of the car to move the car ln a direction perpendicular to a plane contalning the strand.
Preferflbly, the powered means mounted to said carriage includes a worm gear mounted to said means pivotally supporting said tundish, and a powered plnior gear coactlne with said worm gear and mounted to said carriage.
,:
;~
For a further understanding of the invention and for features and advantages thereof, reference may be made to the following description and the drawings which illustrate a preferred embodiment of equipment in accordance with the invention.
Brief Description of the Drawings In the drawings:
Flgure 1 is a plan view of a tundish transfer car arrange-ment in accordance wlth the invention;
Figure 2 is a view along line II-II of Figure l;
Figure 3 is a view along line III-III of Figure l; and Flgure 4 is a view along line IV-IV of Figure 1.
Detailed Descript~on Referring to Figures 1 and 2, apparatus 11 in accordance with the present invention lncludes a movable tundish car structure 13 havlng wheels 15 that coact wlth rails 17 that are mounted to elongate I-beams 19 supported by vertlcal columns 21.
The tundish car structure 13 comprises two opposite ,; , f~; elongate rectangular-sectioned beams 23, 25 that support wheels lS that travel on rails 17 as shown in Figure 2. Ad~acent the ends of each beam ~i 20 23, 25 there are depending leg members 27, 29 and 27a, 29a that are 1.~. . I
¦ secured to the beams 23, 25 in any suitable manner. The depending leg , ~ members 27, 29 and 27a, 29a are interconnected by horizontsl rectangular-.., sectioned beams 31, 33. Each such rectangular beam 31, 33 carries on its ..
top side a rail 35, 37 with suitable fixed wheel chocks 39 at the ends.
The horizontal beams 31, 33 each support the load o~ an fl underslung tundish carriage 41 having wheels 43 that ride on the rails 35, 37. A conventional tundish 45 is supported upon trunnions 47 carried by bearings 49 mounted to supports 51, 53 attached to legs 55, 57 depending ~; from carriage 41. As viewed in Figure 2, the trunnion 47 on the right hand side carries at its end a worm gear 59 and pinion 61 by means of which the trunnions 47 are rotatable to tilt the tundish 45.
~,, ~ A - 4 -1~)4~384 The underslung tundlsh carrlage 41 18 provided wlth a pair of electrically-operated linear actuators 63, 65 or other suitable devlce, that are connected thereto and to the beam structures 25 at the plston rod end. Thus, by actuatlng the assemblies 63, 65, the tundlsh carrlage 41 is movable on the ralls 35, 37 from left to rlght and back agaln, as vlewed ln Flgures 3 and 4; that 18 from front to back and return, as vlewed ln Flgure 1.
The beams 23, 25 carry electrlc motors 67, 69 that act through 8peed reducers 71, 73 to motlvate the apparatus 11 along the 10ralls 17 from positlon No. 1, shown ln Flgure 1, where the tundlsh 45 ls shown ln the pourlng posltion, to positlon No. 2 where the tundish ls shown ln phantom outllne ln the preheat and clean-out po~ltlon.
Two attltudes, A and B, of the tuntlsh 45 are ~hown ln ~lgure 3 at po~ltion No. 1. Attltude A 1~ the pourlng posltlon, wlth the tundlsh 45 tlsectly above the centerllnes of a plurality of castlng molds 75; attltude B 18 the dumping posltion wlth a com entional splll box 77 located ln posltlon on an operatlng Sloor 79.
: In Plgure 4, two attltudes, C ant D, of the tundlsh 45 are shown at posltlon No. 2. Attltude C 18 the preheat posltlon wlth the tundlsh 45 turnet upslde down; attltude D 18 the cleanout posltlon wlth the tundish 45 tllted 80 that slag and hot metal gravltate lnto a dump box 81 on the floor 79.
In Plgure l, arrows E and F lndlcate the movement of the apparatus from posltlon No. I to posltlon No. 2 and back to posltlon No. 1.
When a castlng operatlon 18 to be carrled out, the tundish car 13 18 brought to posltlon No. l and the tundlsh 45 is placed upright ln attltude A. The carrlage 41 18 then moved to a posltlon dlrectly over the molds 75, as shown ln Flgure 3. A ladle 83 carrylng ~olten steel 18 brought lnto posltlon above the tundlsh 45, as shown ln Flgures 1-3, and the pourlng commences when a stopper rod or outslde nozzle-closure valve of the latle 83 1~ openet.
: _ 5 _ ,' ' , .
.. . . . . t .: ,^:.: ... . . .
11~)4~)384 After ~he cast is completed, the cyllnder-piston assemblles 63, 65 are actuated to move the tundish carrlage away from the ~olds 75 and the tundish 45 ls turned from attitude A to attitude B. The worm gear 59 and pinlon 61 are actuated to rotate the tundish 45 60 that slag and hot metal therein gravitate into the spill box 77.
Thereafter, the tundish car 13 18 moved along the rails 17 from posltion No. 1 to posltion No. 2 in the direction of arrow E. At posltion No. 2, the tundlsh ls rotated to a flrst attltude D for clean-out purposes, and then lt is rotated further to a second attltude C for pre-heatlng.
When another cast 18 to be mate, the tundish 18 rotatetto an upright attitude and the apparatus is moved in the direction of arrow F to positlon No. 1, where the tundish assumes attitude A. In thls posltlon, all 18 ready to co~mence another casting cycle.
From the foregoing description of one embodlment of the lm entlon, those skllled ln the art should recognlze many importsnt features and advantages of lt, among whlch the followlng are particularly slgnlflcant:
The tundish can be readily aligned over the mold of a curvet molt casting machine simply by moving the tundish car. The tundish nozzles can also be allgnet with the molt by moving the tuntlsh car ant carriage ln any dlrection rather than resetting the tuntlsh on the car as 18 tone customarlly;
The tundish can be moved away from the molds simply by movlng the carrlage for qulc~ tumping or training of the tundish into a launter in an emergency situatlon. Because the tundish carriage can be 80 moved ln accordance wlth the present lnvention. chill plugging of the tundlsh nozzles at the completlon of a cast is never requlred. Hence, ,~
tundlsh nozzles can be reused slnce they are damaged frequently when J, ~
chlll plugs are removed;
., .
r .,~ ............ . . .
1~4~)384 The car and tundlsh can be moved easily to the dumplng posltion and thence to the cle~ning ~tation. Because the cleaning ststlon 18 removed from the molds the cleanlng operatlon can start lmmedlately;
The tundlsh, after cleanlng and nozzle repairing lf any, can be moved over the tundish preheat burners to ready it for the next cast. The preheat burners are fixed in po~ition instesd of belng movable as usual, and the tundish of the lnventlon 18 easlly and readlly movable to various posltlons whlch cuts down the time between casts to make reaty the tundlsh;
The tundlsh car and carrlage of the lnvention is adaptable to varlous ladle support and handling methods. Latles can be brought in from behlnd the machlne and can be supported by the bsll or on supports under the trunnions. Such ladle handllng methots can be used wlthout changing the tuntlsh transfer carrlage deslgn or the cradle deslgn; ant In accordance wlth the lnvention, there sre no tundish ~ car tracks on the operatlng Sloor that might be tamaged by a hot metal :. ~plll.
~ lthough the invention has been tescrlbed herein with a certaln degree of particularity it 18 understood that the present dls-closure has been made only as an example and that the scope oS the inventlon 18 deSlnet by what 18 herelnafter claimed.
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.-, .. . . r ,; ,: . . ~ . .
~.
Each type of tundlsh transfer càr lnstallatlon and each method of con-; ventlond tuntlsh transfer has atvantages and dlsadvantages.
; In thoJe ca6es where the tundlsh transfer car travels ` b~ck ana forth ~n the dlrectlon of the ca~t otrsnd and the runout tables, J, ' ~; tbe tundlsh ls moved back away from the mold~ after completlon of the cast. In such posltlon, any resldue ln the tundlsh can be dumped ~ l ~etiately lnto a tundlsh splllover box; the tundlsh can be washed wlth ;j oxygen whlle lt 18 ln the tlltet positlon; external nozzles, lf any, ~,;
c n be removet and new nozzles lnstallet as requlret; and then the tuntlsh can be lnverted and moved to a preheat positlon at the rear of the castlng ; ~achlne ~tructure where lt 18 prepared for the next cast.
In thls partlcular lnstance where the tundlsh transfer j c~r mwves ln the dlrectlon of the cast strand, allgnment of the tundlsh ;,~
nozzles over the center of the molds 18 ea~lly aceompllshed; changlng nozzles 18 easlly accompllshet, and no extra allgnment mechanlsm 18 requlred for movlng the tundlsh ln the ~trand runout dlrectlon.
.
However, certaln dlsadvantages are apparent ln tho~e lnstances where the tundlsh car moves ln the dlrectlon of the cast strand.
:,:, Some of the ~ore l~portant dlsadvantages are: 1) the cleanlng operatlon, occurrlng tlrectly behlnd the castlng molds, doe~ hamper the mold operators .,~"~ ~
104~384 ln startln~ to prepare the mold~ for the next ca~t becau~e of the sparks and the lntense heat generated durlng the cleanlng operatlon; 2) the srea behind the sp~llover box 18 llmlted frequently and the removal and replacement of any external nozzles 18 hampered tue to a lack of adequate worklng area; 3) then, too, the lnstallstlon oS a secont tundlsh transfer car i8 very tlfflcult and oftentlmes 18 imprsctlcal; ant 4) slnce the tuntlsh preheat statlon is tlrectly behlnd the pourlng statlon, the preheat stat~on could be tamaged ~hoult lt become necessary to qulckly move a pourlng ladle wlth a running Rtopper to an emergency latle located behlnd the structure.
In other lnstances where the tundi6h transfer car travels back and orth ln a tlrectlon that i8 perpendlcular to the plsne of the ca~t strand, certaln atvantage~ ant tlsadvantages shoult be pointet out.
It 1- an atvantage that a secont tuntlsh car can be lnstallet, or that pro~l~lons for a ~econd car can be mate wlthout any partlcular tlfflculty;
- that tundlsh tumplng ant cleanlng operatlons can be performet at the lte of the molts, ant no lnterference occurs wlth molt preparation for the next cast; the more space 18 avallable Sor the removal ant replacement of external nozzles; that the tuntlsh preheat positlon 18 to one slte of ., .
the molts ant it cannot be tamaget turlng the movement of a pourlng latle ~ wlth a runnlng stopper; ant that minor atJustment oS the tundl~h nozzles ; ln a tlrectlon perpentlcular to the plane of the cast strant is reatlly ; ccompllshet.
Howcver, ln ~uch other instances there are tisadvantsges among whlch the followlng are the most prevalent ones: that the tuntisb cannot be tumped lm~etiately after the cast; that slag or lten steel can drip from the tundlsh nozzles onto the molds when the tuntlsh 18 ~ movet to the dump and cleanout posltlon; that dumplng, cleanlng, removlng - ant replaclng of nozzles and preheatlng occur at the same locatlon whlch , . . .
necessltates movlng the preheat burners lnto posltlon after the clean out ':, ~ over a box contalnlng hot ~lag ant ~teel. Further ralls on whlch the . ,:
: - 2 -.
: r 1~4~)384 tundish transfer car moves can become damaged or covered with hot metal should a spill occur. At such time, an emergency ladle transfer must be employed to locate an emergency ladle at the side of the machine, since the tundish transfer car tracks prevent the lifting of the ladle vertically. Furthermore, special arrangements must be made on the tundish car to move the center-line of the tundish nozzles so as to align them over the center of the molds when chang-ing mold sizes on a curved mold type of casting machine.
The present invention provides an apparatus for transferring a tundish relative to a continuous casting mold from which a cast strand is withdrawn comprising:
a) a car disposed relative to said mold and supporting a carriage carrying said tundish;
b) means for moving said car in a first direction perpendicular to a plane contalning 6ald strand;
c) mean~ for movlng sald carriage relatlve to said car in a second dlrectlon perpendlcular to sald flrst directlon;
d) means plvotally supportlng sald tundlsh ln sald carrlage for rotatlon about an axls perpendicular to said plane; and e) powered means mounted to sald carrlage for rotating said tundish.
More partlcularly the transfer apparatus lncludes a car having wheels engaglng rails disposed at a level above a working floor around the mold with a carrlage carrylng a tundish supported on the car, ; A motor may operate through a speed-reducer that turns the wheels of the car to move the car ln a direction perpendicular to a plane contalning the strand.
Preferflbly, the powered means mounted to said carriage includes a worm gear mounted to said means pivotally supporting said tundish, and a powered plnior gear coactlne with said worm gear and mounted to said carriage.
,:
;~
For a further understanding of the invention and for features and advantages thereof, reference may be made to the following description and the drawings which illustrate a preferred embodiment of equipment in accordance with the invention.
Brief Description of the Drawings In the drawings:
Flgure 1 is a plan view of a tundish transfer car arrange-ment in accordance wlth the invention;
Figure 2 is a view along line II-II of Figure l;
Figure 3 is a view along line III-III of Figure l; and Flgure 4 is a view along line IV-IV of Figure 1.
Detailed Descript~on Referring to Figures 1 and 2, apparatus 11 in accordance with the present invention lncludes a movable tundish car structure 13 havlng wheels 15 that coact wlth rails 17 that are mounted to elongate I-beams 19 supported by vertlcal columns 21.
The tundish car structure 13 comprises two opposite ,; , f~; elongate rectangular-sectioned beams 23, 25 that support wheels lS that travel on rails 17 as shown in Figure 2. Ad~acent the ends of each beam ~i 20 23, 25 there are depending leg members 27, 29 and 27a, 29a that are 1.~. . I
¦ secured to the beams 23, 25 in any suitable manner. The depending leg , ~ members 27, 29 and 27a, 29a are interconnected by horizontsl rectangular-.., sectioned beams 31, 33. Each such rectangular beam 31, 33 carries on its ..
top side a rail 35, 37 with suitable fixed wheel chocks 39 at the ends.
The horizontal beams 31, 33 each support the load o~ an fl underslung tundish carriage 41 having wheels 43 that ride on the rails 35, 37. A conventional tundish 45 is supported upon trunnions 47 carried by bearings 49 mounted to supports 51, 53 attached to legs 55, 57 depending ~; from carriage 41. As viewed in Figure 2, the trunnion 47 on the right hand side carries at its end a worm gear 59 and pinion 61 by means of which the trunnions 47 are rotatable to tilt the tundish 45.
~,, ~ A - 4 -1~)4~384 The underslung tundlsh carrlage 41 18 provided wlth a pair of electrically-operated linear actuators 63, 65 or other suitable devlce, that are connected thereto and to the beam structures 25 at the plston rod end. Thus, by actuatlng the assemblies 63, 65, the tundlsh carrlage 41 is movable on the ralls 35, 37 from left to rlght and back agaln, as vlewed ln Flgures 3 and 4; that 18 from front to back and return, as vlewed ln Flgure 1.
The beams 23, 25 carry electrlc motors 67, 69 that act through 8peed reducers 71, 73 to motlvate the apparatus 11 along the 10ralls 17 from positlon No. 1, shown ln Flgure 1, where the tundlsh 45 ls shown ln the pourlng posltion, to positlon No. 2 where the tundish ls shown ln phantom outllne ln the preheat and clean-out po~ltlon.
Two attltudes, A and B, of the tuntlsh 45 are ~hown ln ~lgure 3 at po~ltion No. 1. Attltude A 1~ the pourlng posltlon, wlth the tundlsh 45 tlsectly above the centerllnes of a plurality of castlng molds 75; attltude B 18 the dumping posltion wlth a com entional splll box 77 located ln posltlon on an operatlng Sloor 79.
: In Plgure 4, two attltudes, C ant D, of the tundlsh 45 are shown at posltlon No. 2. Attltude C 18 the preheat posltlon wlth the tundlsh 45 turnet upslde down; attltude D 18 the cleanout posltlon wlth the tundish 45 tllted 80 that slag and hot metal gravltate lnto a dump box 81 on the floor 79.
In Plgure l, arrows E and F lndlcate the movement of the apparatus from posltlon No. I to posltlon No. 2 and back to posltlon No. 1.
When a castlng operatlon 18 to be carrled out, the tundish car 13 18 brought to posltlon No. l and the tundlsh 45 is placed upright ln attltude A. The carrlage 41 18 then moved to a posltlon dlrectly over the molds 75, as shown ln Flgure 3. A ladle 83 carrylng ~olten steel 18 brought lnto posltlon above the tundlsh 45, as shown ln Flgures 1-3, and the pourlng commences when a stopper rod or outslde nozzle-closure valve of the latle 83 1~ openet.
: _ 5 _ ,' ' , .
.. . . . . t .: ,^:.: ... . . .
11~)4~)384 After ~he cast is completed, the cyllnder-piston assemblles 63, 65 are actuated to move the tundish carrlage away from the ~olds 75 and the tundish 45 ls turned from attitude A to attitude B. The worm gear 59 and pinlon 61 are actuated to rotate the tundish 45 60 that slag and hot metal therein gravitate into the spill box 77.
Thereafter, the tundish car 13 18 moved along the rails 17 from posltion No. 1 to posltion No. 2 in the direction of arrow E. At posltion No. 2, the tundlsh ls rotated to a flrst attltude D for clean-out purposes, and then lt is rotated further to a second attltude C for pre-heatlng.
When another cast 18 to be mate, the tundish 18 rotatetto an upright attitude and the apparatus is moved in the direction of arrow F to positlon No. 1, where the tundish assumes attitude A. In thls posltlon, all 18 ready to co~mence another casting cycle.
From the foregoing description of one embodlment of the lm entlon, those skllled ln the art should recognlze many importsnt features and advantages of lt, among whlch the followlng are particularly slgnlflcant:
The tundish can be readily aligned over the mold of a curvet molt casting machine simply by moving the tundish car. The tundish nozzles can also be allgnet with the molt by moving the tuntlsh car ant carriage ln any dlrection rather than resetting the tuntlsh on the car as 18 tone customarlly;
The tundish can be moved away from the molds simply by movlng the carrlage for qulc~ tumping or training of the tundish into a launter in an emergency situatlon. Because the tundish carriage can be 80 moved ln accordance wlth the present lnvention. chill plugging of the tundlsh nozzles at the completlon of a cast is never requlred. Hence, ,~
tundlsh nozzles can be reused slnce they are damaged frequently when J, ~
chlll plugs are removed;
., .
r .,~ ............ . . .
1~4~)384 The car and tundlsh can be moved easily to the dumplng posltion and thence to the cle~ning ~tation. Because the cleaning ststlon 18 removed from the molds the cleanlng operatlon can start lmmedlately;
The tundlsh, after cleanlng and nozzle repairing lf any, can be moved over the tundish preheat burners to ready it for the next cast. The preheat burners are fixed in po~ition instesd of belng movable as usual, and the tundish of the lnventlon 18 easlly and readlly movable to various posltlons whlch cuts down the time between casts to make reaty the tundlsh;
The tundlsh car and carrlage of the lnvention is adaptable to varlous ladle support and handling methods. Latles can be brought in from behlnd the machlne and can be supported by the bsll or on supports under the trunnions. Such ladle handllng methots can be used wlthout changing the tuntlsh transfer carrlage deslgn or the cradle deslgn; ant In accordance wlth the lnvention, there sre no tundish ~ car tracks on the operatlng Sloor that might be tamaged by a hot metal :. ~plll.
~ lthough the invention has been tescrlbed herein with a certaln degree of particularity it 18 understood that the present dls-closure has been made only as an example and that the scope oS the inventlon 18 deSlnet by what 18 herelnafter claimed.
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Claims (9)
IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus for transferring a tundish relative to a continuous casting mold from which a cast strand is withdrawn comprising:
a) a car disposed relative to said mold and supporting a carriage carrying said tundish;
b) means for moving said car in a first direction perpendicular to a plane containing said strand;
c) means for moving said carriage relative to said car in a second direction perpendicular to said first direction;
d) means pivotally supporting said tundish in said carriage for rotation about an axis perpendicular to said plane; and e) powered means mounted to said carriage for rotating said tundish.
a) a car disposed relative to said mold and supporting a carriage carrying said tundish;
b) means for moving said car in a first direction perpendicular to a plane containing said strand;
c) means for moving said carriage relative to said car in a second direction perpendicular to said first direction;
d) means pivotally supporting said tundish in said carriage for rotation about an axis perpendicular to said plane; and e) powered means mounted to said carriage for rotating said tundish.
2. The apparatus of claim 1 wherein:
a) said means for moving said car includes motorized wheels operating on rails mounted adjacent said molds; and b) said means for moving said carriage includes a linear actuator mounted to said carriage and connected to said car.
a) said means for moving said car includes motorized wheels operating on rails mounted adjacent said molds; and b) said means for moving said carriage includes a linear actuator mounted to said carriage and connected to said car.
3. The apparatus of claim 1 wherein:
a) said car is movable on rails mounted above a working floor level.
a) said car is movable on rails mounted above a working floor level.
4. The apparatus of claim 1 wherein:
a) said carriage is underslung with respect to said car.
a) said carriage is underslung with respect to said car.
5. Apparatus for transferring a tundish relative to a continuous casting mold from which a cast strand is withdrawn comprising:
a) a car having wheels engaging rails disposed at a level above a working floor around said mold;
b) a carriage carrying a tundish supported on said car;
c) a motor operating through speed-reducer means that turns said wheels of said car and moves said car in a first direction perpendicular to a plane containing said strand;
d) powered means mounted to said carriage for moving said carriage relative to said car in a second direction perpendicular to a plane containing said strand; and e) means pivotally supporting said tundish in said carriage for rotat-ion about an axis perpendicular to said plane.
a) a car having wheels engaging rails disposed at a level above a working floor around said mold;
b) a carriage carrying a tundish supported on said car;
c) a motor operating through speed-reducer means that turns said wheels of said car and moves said car in a first direction perpendicular to a plane containing said strand;
d) powered means mounted to said carriage for moving said carriage relative to said car in a second direction perpendicular to a plane containing said strand; and e) means pivotally supporting said tundish in said carriage for rotat-ion about an axis perpendicular to said plane.
6. The apparatus of claim 5 wherein:
a) said carriage is underslung relative to said car.
a) said carriage is underslung relative to said car.
7. Apparatus for transferring a tundish relative to a continuous casting mold from which a cast strand is withdrawn comprising:
a) a car having wheels engaging rails disposed along a line extend-ing perpendicular to a plane containing said strand and above a working floor around said mold;
b) a carriage carrying a tundish supported on said car;
c) means for moving said car on said rails from a first position adjacent to said mold in a first direction perpendicular to a plane containing said strand and to a second position away from said mold in a second direction perpendicular to said first direct-ion; and d) powered means mounted to said carriage for rotating said tundish about an axis perpendicular to said plane whereby at said second position said tundish can be preheated by burners established at said second position.
a) a car having wheels engaging rails disposed along a line extend-ing perpendicular to a plane containing said strand and above a working floor around said mold;
b) a carriage carrying a tundish supported on said car;
c) means for moving said car on said rails from a first position adjacent to said mold in a first direction perpendicular to a plane containing said strand and to a second position away from said mold in a second direction perpendicular to said first direct-ion; and d) powered means mounted to said carriage for rotating said tundish about an axis perpendicular to said plane whereby at said second position said tundish can be preheated by burners established at said second position.
8. The apparatus of claim 7 wherein:
a) said means for moving said car includes power means that rotates at least one wheel.
a) said means for moving said car includes power means that rotates at least one wheel.
9. The apparatus of claim 1, 5 or 7 wherein:
a) said powered means includes a worm gear mounted to said means pivotally supporting said tundish; and b) a powered pinion gear coacting with said worm gear and mounted to said carriage.
a) said powered means includes a worm gear mounted to said means pivotally supporting said tundish; and b) a powered pinion gear coacting with said worm gear and mounted to said carriage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48580974A | 1974-07-05 | 1974-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1040384A true CA1040384A (en) | 1978-10-17 |
Family
ID=23929518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA225,388A Expired CA1040384A (en) | 1974-07-05 | 1975-04-24 | Tundish transfer apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1040384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002078880A1 (en) * | 2001-04-02 | 2002-10-10 | Nucor Corporation | Tundish positioning |
-
1975
- 1975-04-24 CA CA225,388A patent/CA1040384A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002078880A1 (en) * | 2001-04-02 | 2002-10-10 | Nucor Corporation | Tundish positioning |
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