US3157920A - Continuous casting plant with deflection of the casting - Google Patents

Continuous casting plant with deflection of the casting Download PDF

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US3157920A
US3157920A US184835A US18483562A US3157920A US 3157920 A US3157920 A US 3157920A US 184835 A US184835 A US 184835A US 18483562 A US18483562 A US 18483562A US 3157920 A US3157920 A US 3157920A
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strand
chute
casting
chain
mold
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US184835A
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Hess Walter
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SMS Concast AG
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Concast AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/142—Plants for continuous casting for curved casting

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  • This invention relates to continuous casting and, more particularly, relates to an improved method and apparatus for intercepting lengths of castings cut from the vertical cast strand and guiding such intercepted lengths to a horizontal delivery conveyor.
  • a sup porting trolley consisting of a roller mounted chain assembly, is controllably driven within the chute to support the strand length as it is cut and to guide the cut length down the chute to the delivery conveyor.
  • the supporting chain preferably consists of individual chain links which are held together by means of axle bolts or pins, and which are rockable upwards about these axle bolts.
  • some of the axle bolts uniting the chain links carry running wheels, by means of which the supporting chain can roll upon rails on the chute.
  • FIG. 1 is a diagrammatic plan view of the plant, comprising casting equipment, extractor or driver, bending means for the continuous casting, chute, straighteningroller bed, and delivery conveyor.
  • FIG. 2 shows on a larger scale a cross section through the chute on the line II-II in FIG. 1.
  • FIG. 3 is a side view of the supporting chain, with its head-piece.
  • FIG. 4 is a plan view of the supporting chain shown in FIG. 3.
  • FIG. 5 shows a detail of the supporting chain on a larger scale, illustrating the union of two abutting links of the supporting chain with the axle-bolts connecting these links and the running wheels mounted thereon.
  • FIG. 6 shows a plan view of part of the deliveryroller bed, with the supporting chain arranged beside the same in the inoperative position, as well as the pulling device for the engagement of the supporting chain on the running rollers of the roller bed
  • FIG. 7 is a sectional view according to the line VTI VII of FIG. 6.
  • a common problem in practice is that the strand 3 issuing from the mold is of a length shorter than the distance between the straightening device 8 and the rollers of the extractor 5. This occurs in casting of large slabs when the ladle empties prior to casting of a slab of the length required to reach from the straightening device to the extractor. Also, this occurs when the casting is interrupted. In such cases, a strand will drop into chute 7 cansing great difliculty. To provide for guidance of the strand, the arrangement discussed in the following paragraphs is advantageously employed.
  • rollers 25 At one side of the rollers 9 are situated rollers 25. Chain 11 rests in readiness on these rollers 25. It may be moved in a direction perpendicular to its length by a pulling device to move the chain onto the rollers 9.
  • the pulling device has two sets of chain wheels or gears 26 and 27.
  • the chain wheels 26 are affixed to a common shaft28 and each moves an endless chain 29, which runs over the drive gear 26 and idler gear 27.
  • the shaft 28 is driven by an electric motor 30.
  • Each pulling chain has two cams 31 and 32. The cams 31 push, at a convenient turning of the shaft 28, the chain 11 to the right (FIG. 7) until the chain 11 is positioned in the middle of the rollers 9.
  • the rollers 9 are then rotated to move the chain 11 to the right hand (FIG.
  • the supporting chain is composed of individual chain side bars 11a, bolts or pins 13, and connecting pieces 14.
  • the distance between the side bars is fixed by screw bolts 111) with screw-threaded portions at both ends and a thickened centre portion; and the side bars 11a are united in pairs by the nuts mounted upon the threaded ends of the screw bolts 11b.
  • the .bolts or pins 13 connect the side bars 11a with the connecting pieces 14.
  • the side bars 11a are rockable to a limited extent about the bolts 13, the extent of the relative rocking of the chain side bars 11a being adapted to the curvature of the chute 7.
  • running wheels 15 are mounted upon opposite ends of two adjacent axle bolts 13, so as to provide a pair of wheels, each bolt carrying only one wheel.
  • the chute 7 accommodating the supporting chain 11 is preferably constructed as a tunnel 19 with a thermally insulating brick lining, so that any cooling of the length of casting is as faras possible avoided. Moreover, by this means both the casting 3 and the supporting chain are substantially protected against falling out the chute.
  • the chute 7 is provided with a cover 20.
  • the head-piece 12 has a guide-piece 18, with which it guides itself along a rail 20a in the cover 20 of the chute 7.
  • a continuous casting plant comprising avertical open-ended mold adapted to cast molten metal poured therein into a strand, a cooling chamber positioned below said mold and adapted to cool said strand issuing from said mold, drive rolls positioned below said cooling chamber to engage said strand and to extract said strand from said mold, bending means positioned below said drive rolls and cooperating therewith to arcuately bend said strand from the vertical to a horizontal course, a horizontally disposed strand straightening bed to receive said strand and to straighten said strand, a delivery conveyor to receive the straightened strand, 'a chute extending between said bending means and said straightening bed and being curved in an arc corresponding to the arc of said bent strand, said chute being provided with rails extending the length thereof, a supporting chain movable along said rails in said chute, means for driving said supporting chain upwardly into said chute to contact the end of the bent strand within said chute and to support the weight of said strand, and means to withdraw said chain While supporting said
  • supporting chains comprise a plurality of individual lengths coupled together so as to permit rotation about said coupling only in one direction and only to the ,157,aso
  • a continous casting plant in accordance with claim 2 in which said coupling includes axles, wheels rotatably supported on said axles, said wheels engaging said rails in said chute during movement of said supporting chain.
  • a continuous casting plant in accordance with claim 1 which includes a headpiece coupled to the end of said supporting chain, said headpiece having a concave surface to engage the end of said strand and to ensure that the engagement is in supporting relationship to said strand.
  • a continuous casting plant in accordance with claim 1 in which said chute is thermally insulated to prevent heat loss from said strand during movement through said chute.
  • a continous casting plant in accordance with claim 1 in which said supporting chain is arranged adjacent the delivery conveyor and which includes means for moving said supporting chain on to said delivery conveyor and displacing said chain into said chute to engage the end of the strand.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Description

Nov. 24, 1964 w, HESS 3,157,920
CONTINUOUS CASTING PLANT WITH DEFLECTION OF THE CASTING Filed April 5, 1962 3 Sheets-Sheet 1 Nov. 24, 1964 w. HESS 3,157,920
CONTINUOUS CASTING PLANT WITH DEFLECTION OF THE CASTING Filed April 5, 1962 a Sheets-Sheet 2 20 am 49 an 7 gm 2 U U D U00 I AS a "1 k .J )5? I 2.0 A6 #4- Ae W. HESS Nov. 24, 1964 CONTINUOUS CASTING PLANT WITH DEFLECTION OF THE CASTING 3 Sheets-Sheet 5 Filed April 3, 1962 United States Patent 3,157,920 CDN'IINUOUS CASTING PLANT WITH DEFLECTION OF THE CASTING Walter Hess, Dusseldert, Germany, assiguor to Concast AG, Zurich, Switzerland Filed Apr. 3, 1962, Ser. No. 184,835 6 Claims. (Cl. 22-572.)
This invention relates to continuous casting and, more particularly, relates to an improved method and apparatus for intercepting lengths of castings cut from the vertical cast strand and guiding such intercepted lengths to a horizontal delivery conveyor.
When casting strands of large cross sectional dimensions in a vertical continuous casting plant, it is impossible to remove short lengths cut from the strand without means for holding the cut strand. With large castings, the weight of the cut length compounds the difficulty of properly grasping'a freshly cut strand length.
For example, it is common practice to provide a casting plant for casting of, selectable strand sizes, e.g. a large slab of 1800 x 200 mm. in cross section and small slabs 500 x 150 mm. in cross section. In such arrangements, it is necessary to dimension the ladle capacity for the smaller sizes so that the time for pouring the ladle contents does not become excessive with possible solidifioation of the melt in the ladle. Thus, when large slabs are cast, the ladle empties before the slab length is long enough to reach the strand straighteners, which support the slab weight, and the slab will drop into the discharge chute causing great difliculties.
The same problem of guiding a short strand exists when the casting is interrupted for other operating re-asons.
It is, therefore, an object of the present invention to provide -'a chute for receipt of the cut length. A sup porting trolley, consisting of a roller mounted chain assembly, is controllably driven within the chute to support the strand length as it is cut and to guide the cut length down the chute to the delivery conveyor.
The supporting chain preferably consists of individual chain links which are held together by means of axle bolts or pins, and which are rockable upwards about these axle bolts.
According to one embodiment of this invention, some of the axle bolts uniting the chain links carry running wheels, by means of which the supporting chain can roll upon rails on the chute.
A preferred embodiment of the invention is illustrated by the accompanying drawings, in which:
FIG. 1 is a diagrammatic plan view of the plant, comprising casting equipment, extractor or driver, bending means for the continuous casting, chute, straighteningroller bed, and delivery conveyor.
FIG. 2 shows on a larger scale a cross section through the chute on the line II-II in FIG. 1.
FIG. 3 is a side view of the supporting chain, with its head-piece.
FIG. 4 is a plan view of the supporting chain shown in FIG. 3.
FIG. 5 shows a detail of the supporting chain on a larger scale, illustrating the union of two abutting links of the supporting chain with the axle-bolts connecting these links and the running wheels mounted thereon.
FIG. 6 shows a plan view of part of the deliveryroller bed, with the supporting chain arranged beside the same in the inoperative position, as well as the pulling device for the engagement of the supporting chain on the running rollers of the roller bed, and I FIG. 7 is a sectional view according to the line VTI VII of FIG. 6.
3,157,920 Patented Nov. 24, 1964 The metal flowing out of the casting ladle 1a passes into the chill-mould 1, which is arranged vertically in a stand 2 of the continuous casting plant, and from which the casting 3 issues into a cooling chamber 4. The casting length is guided vertically downwards by an extractor or driver 5. Beneath the driver there is secured to one of the working platforms 2a a bending member 6, which deflects the on-coming casting to one side and guides it onto a chute 7, from which it passes, over a straighteningroller bed 8, onto a delivery conveyor 9. A cutting machine 10 can divide the casting 3, the parts of which may be brought aside by further rollers 24.
A common problem in practice is that the strand 3 issuing from the mold is of a length shorter than the distance between the straightening device 8 and the rollers of the extractor 5. This occurs in casting of large slabs when the ladle empties prior to casting of a slab of the length required to reach from the straightening device to the extractor. Also, this occurs when the casting is interrupted. In such cases, a strand will drop into chute 7 cansing great difliculty. To provide for guidance of the strand, the arrangement discussed in the following paragraphs is advantageously employed.
At one side of the rollers 9 are situated rollers 25. Chain 11 rests in readiness on these rollers 25. It may be moved in a direction perpendicular to its length by a pulling device to move the chain onto the rollers 9. The pulling device has two sets of chain wheels or gears 26 and 27. The chain wheels 26 are affixed to a common shaft28 and each moves an endless chain 29, which runs over the drive gear 26 and idler gear 27. The shaft 28 is driven by an electric motor 30. Each pulling chain has two cams 31 and 32. The cams 31 push, at a convenient turning of the shaft 28, the chain 11 to the right (FIG. 7) until the chain 11 is positioned in the middle of the rollers 9. The rollers 9 are then rotated to move the chain 11 to the right hand (FIG. 6) until its headpiece 21 passes through the straightening-roller bed 22 and enters the lower end of the chute 7. If pressure rollers 22a of the straightening-roller bed 22 are now pressed down onto the supporting chain 11, the supporting chain 11 is impelled upwards by the positively driven rollers of the straightening-roller bed 22 in the chute 7 until its headpiece 12 comes into contact with the length of casting. The direction of rotation of the rollers of the straighteningroller bed 22 and of the delivery-roller bed 9 is then reversed, and the length of casting, the upper end of which is leaving the driver 5, is guided downwards, with the supporting chain 11, right on to the delivery-roller bed 9.
The supporting chain is composed of individual chain side bars 11a, bolts or pins 13, and connecting pieces 14. The distance between the side bars is fixed by screw bolts 111) with screw-threaded portions at both ends and a thickened centre portion; and the side bars 11a are united in pairs by the nuts mounted upon the threaded ends of the screw bolts 11b. The .bolts or pins 13 connect the side bars 11a with the connecting pieces 14. The side bars 11a are rockable to a limited extent about the bolts 13, the extent of the relative rocking of the chain side bars 11a being adapted to the curvature of the chute 7.
In order to render possible a rolling movement of the suporting chain 11 upon rails 16 provided on the chute 7, running wheels 15 are mounted upon opposite ends of two adjacent axle bolts 13, so as to provide a pair of wheels, each bolt carrying only one wheel.
The chute 7 accommodating the supporting chain 11 is preferably constructed as a tunnel 19 with a thermally insulating brick lining, so that any cooling of the length of casting is as faras possible avoided. Moreover, by this means both the casting 3 and the supporting chain are substantially protected against falling out the chute. In
addition, the chute 7 is provided with a cover 20. The head-piece 12 has a guide-piece 18, with which it guides itself along a rail 20a in the cover 20 of the chute 7.
This invention may be modified and embodied within the scope of the subjoined claims.
What is claimed is:
1. A continuous casting plant comprising avertical open-ended mold adapted to cast molten metal poured therein into a strand, a cooling chamber positioned below said mold and adapted to cool said strand issuing from said mold, drive rolls positioned below said cooling chamber to engage said strand and to extract said strand from said mold, bending means positioned below said drive rolls and cooperating therewith to arcuately bend said strand from the vertical to a horizontal course, a horizontally disposed strand straightening bed to receive said strand and to straighten said strand, a delivery conveyor to receive the straightened strand, 'a chute extending between said bending means and said straightening bed and being curved in an arc corresponding to the arc of said bent strand, said chute being provided with rails extending the length thereof, a supporting chain movable along said rails in said chute, means for driving said supporting chain upwardly into said chute to contact the end of the bent strand within said chute and to support the weight of said strand, and means to withdraw said chain While supporting said strand so that a strand which is shorter than the distance between said straightener and said drive rolls will not be unsupportably dropped during traversement of the distance between the drive rolls and the straightener.
2. A continuous casting plant in accordance with claim 1 in which. supporting chains comprise a plurality of individual lengths coupled together so as to permit rotation about said coupling only in one direction and only to the ,157,aso
extent required for the chain to traverse the arc of said chute.
3. A continous casting plant in accordance with claim 2 in which said coupling includes axles, wheels rotatably supported on said axles, said wheels engaging said rails in said chute during movement of said supporting chain.
4. A continuous casting plant in accordance with claim 1 which includes a headpiece coupled to the end of said supporting chain, said headpiece having a concave surface to engage the end of said strand and to ensure that the engagement is in supporting relationship to said strand.
5. A continuous casting plant in accordance with claim 1 in which said chute is thermally insulated to prevent heat loss from said strand during movement through said chute.
6. A continous casting plant in accordance with claim 1 in which said supporting chain is arranged adjacent the delivery conveyor and which includes means for moving said supporting chain on to said delivery conveyor and displacing said chain into said chute to engage the end of the strand.
References Cited by the Examiner UNITED STATES PATENTS 2,698,467 1/55 Tarquinee 2257.2 2,947,075 8/60 Schneckenburger 22-57.3
FOREIGN PATENTS 728,412 4/55 Great Britain.
125,883 5/58 Russia. 900,734 7/62 Great Britain.
SAMUEL F. COLEMAN, Acting Primary Examiner.
WILLIAM B. LA BORDE, ERNEST A. FALLER, 1a., Examiners.

Claims (1)

1. A CONTINUOUS CASTING PLANT COMPRISING A VERTICAL OPEN-ENDED MOLD ADAPTED TO CAST MOLTEN METAL POURED THEREIN INTO A STRAND, A COOLING CHAMBER POSITIONED BELOW SAID MOLD AND ADAPTED TO COOL SAID STRAND ISSUING FROM SAID MOLD, DRIVE ROLLS POSITIONED BELOW SAID COOLING CHAMBER TO ENGAGE SAID STRAND AND TO EXTRACT SAID STRAND FROM SAID MOLD, BENDING MEANS POSITIONED BELOW SAID DRIVE ROLLS AND COOPERATING THEREWITH TO ARCUATELY BEND SAID STRAND FROM THE VERTICAL TO A HORIZONTAL COURSE, A HORIZONTALLY DISPOSED STRAND STRAIGHTENING BED TO RECEIVE SAID STRAND AND TO STRAIGHTEN SAID STRAND, A DELIVERY CONVEYOR TO RECEIVE THE STRAIGHTENED STRAND, A CHUTE EXTENDING BETWEEN SAID BENDING MEANS AND SAID STRAIGHTENING BED AND BEING CURVED IN AN ARC CORRESPONDING TO THE ARC OF SAID BENT STRAND, SAID CHUTE BEING PROVIDED WITH RAILS EXTENDING THE LENGTH THEREOF, A SUPPORTING CHAIN MOVABLE ALONG SAID RAILS IN SAID CHUTE, MEANS FOR DRIVING SAID SUPPORTING CHAIN UPWARDLY INTO SAID CHUTE TO CONTACT THE END OF THE BENT STRAND WITHIN SAID CHUTE AND TO SUPPORT THE WEIGHT OF SAID STRAND, AND MEANS TO WITHDRAW
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346036A (en) * 1964-01-16 1967-10-10 Boehler & Co Ag Geb Process for the continuous casting of tubular products
US3367399A (en) * 1965-06-16 1968-02-06 Koppers Co Inc Continuous casting apparatus
US3391725A (en) * 1966-01-13 1968-07-09 Concast Inc Process and apparatus for cooling and supporting a continuous casting strand
US3409071A (en) * 1966-04-25 1968-11-05 Koppers Co Inc Apparatus for use in withdrawing and guiding a continuous cast strand
US3429366A (en) * 1966-11-22 1969-02-25 Bliss Co Universal starting bar
US3464482A (en) * 1965-07-23 1969-09-02 United Eng Foundry Co Continuous casting
US3603376A (en) * 1969-04-04 1971-09-07 Koppers Co Inc Apparatus for bending continuous cast slabs
US3608619A (en) * 1969-03-10 1971-09-28 Concast Inc Continuous casting starter bar
US3628594A (en) * 1969-01-13 1971-12-21 Koppers Co Inc Apparatus for reducing the cross section of a continuous cast strand
US3650314A (en) * 1969-11-19 1972-03-21 Bohler & Co Ag Fa Geb Apparatus for manufacturing stretch-formed products of high-melting metals
US3722576A (en) * 1971-08-16 1973-03-27 Steel Corp Method and apparatus for straightening continuous casting
EP0685281A2 (en) * 1994-05-30 1995-12-06 MANNESMANN Aktiengesellschaft Process and apparatus for continuous casting near net shape products

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698467A (en) * 1950-06-05 1955-01-04 Edward W Osann Jr Method and apparatus for the continuous casting of metal
GB728412A (en) * 1952-02-20 1955-04-20 Boehler & Co Ag Geb Improvements in or relating to continuous casting plants
US2947075A (en) * 1956-09-21 1960-08-02 Moossche Eisenwerke Ag Method for the continuous casting of metal strip, and strip casting plant for carrying out the method
GB900734A (en) * 1959-09-01 1962-07-11 Concast Ag Improvements in arrangements for feeding in the starting bar in vertical continuous casting plants

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698467A (en) * 1950-06-05 1955-01-04 Edward W Osann Jr Method and apparatus for the continuous casting of metal
GB728412A (en) * 1952-02-20 1955-04-20 Boehler & Co Ag Geb Improvements in or relating to continuous casting plants
US2947075A (en) * 1956-09-21 1960-08-02 Moossche Eisenwerke Ag Method for the continuous casting of metal strip, and strip casting plant for carrying out the method
GB900734A (en) * 1959-09-01 1962-07-11 Concast Ag Improvements in arrangements for feeding in the starting bar in vertical continuous casting plants

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346036A (en) * 1964-01-16 1967-10-10 Boehler & Co Ag Geb Process for the continuous casting of tubular products
US3367399A (en) * 1965-06-16 1968-02-06 Koppers Co Inc Continuous casting apparatus
US3464482A (en) * 1965-07-23 1969-09-02 United Eng Foundry Co Continuous casting
US3391725A (en) * 1966-01-13 1968-07-09 Concast Inc Process and apparatus for cooling and supporting a continuous casting strand
US3409071A (en) * 1966-04-25 1968-11-05 Koppers Co Inc Apparatus for use in withdrawing and guiding a continuous cast strand
DE1583586B1 (en) * 1966-11-22 1972-02-03 Bliss Co Line guide frame for a starting line
US3429366A (en) * 1966-11-22 1969-02-25 Bliss Co Universal starting bar
US3628594A (en) * 1969-01-13 1971-12-21 Koppers Co Inc Apparatus for reducing the cross section of a continuous cast strand
US3608619A (en) * 1969-03-10 1971-09-28 Concast Inc Continuous casting starter bar
US3603376A (en) * 1969-04-04 1971-09-07 Koppers Co Inc Apparatus for bending continuous cast slabs
US3650314A (en) * 1969-11-19 1972-03-21 Bohler & Co Ag Fa Geb Apparatus for manufacturing stretch-formed products of high-melting metals
US3722576A (en) * 1971-08-16 1973-03-27 Steel Corp Method and apparatus for straightening continuous casting
EP0685281A2 (en) * 1994-05-30 1995-12-06 MANNESMANN Aktiengesellschaft Process and apparatus for continuous casting near net shape products
EP0685281A3 (en) * 1994-05-30 1997-09-10 Mannesmann Ag Process and apparatus for continuous casting near net shape products.
KR100417393B1 (en) * 1994-05-30 2004-03-26 에스엠에스 메르 게엠베하 Process and apparatus for continuous casting near net shape products

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