US3550674A - Guide-roll arrangement for continuous casting - Google Patents

Guide-roll arrangement for continuous casting Download PDF

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Publication number
US3550674A
US3550674A US699150A US3550674DA US3550674A US 3550674 A US3550674 A US 3550674A US 699150 A US699150 A US 699150A US 3550674D A US3550674D A US 3550674DA US 3550674 A US3550674 A US 3550674A
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US
United States
Prior art keywords
rolls
guide
slab
driven
guide rolls
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US699150A
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English (en)
Inventor
Francis Gallucci
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United States Steel Corp
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United States Steel Corp
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Filing date
Publication date
Application filed by United States Steel Corp filed Critical United States Steel Corp
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Publication of US3550674A publication Critical patent/US3550674A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • B65G39/02—Adaptations of individual rollers and supports therefor
    • B65G39/07—Other adaptations of sleeves
    • B65G39/071—Other adaptations of sleeves for aligning belts or sheets

Definitions

  • Wood ABSTRACT In a continuous-casting machine the guide rolls, which conduct the solidifying slab from the mold to the pinch rolls, conventionally are all idlers.
  • the invention incorporates two sets of power-driven rolls among the guide rolls.
  • the power-driven guide rolls in conjunction with the usual powerdriven pinch rolls below, control the forces on the descending slab and its movement as it solidifies.
  • the form of continuous-casting machine in which my guideroll arrangement and method are used includes a water-cooled mold open at both ends, trains of vertically spaced opposed pairs of guide rolls below the mold, a set of power-driven pinch rolls below the guide rolls, and a curved casting guide below the pinch rolls.
  • a starter bar is inserted upwardly through the pinch rolls and guide rolls to the mold.
  • a stream of molten metal is poured through the mold into contact with the top of the starter bar, which descends through the guide rolls and pinch rolls ahead of the resulting slab.
  • water sprays are applied to its surface to aid in solidifying it.
  • the starter bar Initially the leading end of the slab attaches itself to the top of the starter bar, but the starter bar is disconnected as the slab reaches the pinch rolls. At first the pinch rolls restrain descent of the starter bar, but after the slab is part way through the guide rolls, the pinch rolls propel the starter bar and slab.
  • An object of my invention is to provide an improved guideroll arrangement in which at least one set of guide rolls are power driven and cooperate with the pinch rolls to control forces on a descending slab.
  • a further object is to provide an improved guide-roll arrangement in which one or more sets of power-driven rolls bear on a descending slab ahead of the pinch rolls under a controlled pressure and at a controlled torque, thereby regulating the forces on the slab to minimize the possibility of damage, and also to assure that the starter bar is properly disconnected from the slab.
  • a further object is to provide an improved method of controlling the forces on a descending slab ahead of the pinch rolls.
  • FIG. 1 is a diagrammatic side elevational view of a portion of a continuous-casting machine equipped with my improved arrangement of guide rolls;
  • FIG. 2 is a horizontal section on a larger scale on line II-II of FIG. I;
  • FIG. 3 is an elevational view of a portion of the structure from the right of FIG. 2; v
  • FIG. 4 is a vertical section on line IV-IV of FIG. 2;
  • FIG. 5 is a vertical section on line V-V of FIG. 2.
  • FIG. 1 shows a continuous-casting machine which includes an open ended mold 10, four trains of vertically spaced, opposed pairs of idler guide rolls l2, I3, 14 and 15 below the mold, power-driven pinch rolls 16 below the guide rolls, a casting guide 17 below the pinch rolls, and a starter bar 18.
  • the casting guide is equipped with bending rolls 19.
  • These parts can be of a known construction, for example, as shown in the aforementioned Foldessy patent; hence I have not shown them in detail.
  • the machine of course includes other conventional parts which I have not shown, since they are not involved in the present invention.
  • a slab S is shown descend ing through the machine. i
  • the two sets of power-driven rolls 20 and 21 are of like construction and similarly mounted; hence I show and describe only the set 20 and their mounting in detail.
  • the machine has fixed housing members 22 and 23 at opposite sides.
  • the housing members have horizontal shoulders 24 on which rest opposed frames 25 and 26 for supporting the respective rolls 20.
  • the frames are held in position by keepers 27 and bolts 28 which extend through the housing members and keepers.
  • the two frames and the parts carried by each are of like construction; hence I describe in detail only the frame 25.
  • Frame 25 includes a pair of opposed channels 30, inner and outer transverse bars 31 and 32 rigidly attached at their ends to the channels, and gussets 34 between the end portions of the bars.
  • Preferably the outer transverse bar 32 is bowed outwardly.
  • I slidably mount a A pair of opposed bearing chocks 35 in channels 30 and journal the roll 20 in these chocks.
  • Roll 20 has right and left-hand helical grooves 37 extending from its opposite ends toward the middle. I join a drive shaft 38 to one end of roll 20 through a detachable coupling 39.
  • Two sets of backup rolls 42 of four to each set are journaled in fixtures 43 and bear against roll 20.
  • Each fixture 43 is slidably mounted on a respective pair of studs 44 fixed to the inner transverse bar 31. Pairs of spaced-apart nuts 45 are threadedly engaged with the studs to limit movement of the fixtures.
  • Each fixture has a pair of plungers 46 pivoted thereto and extending through respective openings in bar 31 and a guide 47 fixed to the gusset 34.
  • a leaf spring 48 abuts the ends of the two plungers 46.
  • Cap screws 49 are threadedly engaged with the outer transverse bar 32 and abut the opposite face of the leaf spring.
  • Cover plates 50 span the space between the inner and outer bars 31 and 32 above and below the bars and serve as guides for the spring 48. Thus by turning the cap screws 49 I can initially adjust the pressure with which the backup rolls 42 bear against the roll 20. This pressure remains constant until a further adjustment is made.
  • a pair of opposed stops 52 are fixed to the inner faces of the housing members 22 and 23 between the channels 30 of the two frames 25 and 26.
  • the channel 30 of frame 25 abuts these stops.
  • This section normally is in considerable tension once the leading end of the slab descends part way through the guide rolls, although ideally it would be free of longitudinal forces (tension or compression). When my invention is employed, the tension is small. This is of particular importance at the time the starter bar 18 is disconnected.
  • My preferred starter'bar has a separable chill plate which is mechanically detached from the bar and remains with the slab, as shown or example in my earlier copending application Ser. No. 616,103, filed Feb. 14, 1967 (now US. Pat. No. 3,448,789 This type of starter bar can be disconnected properly only when the tensile forces are not excessive.
  • a continuous-casting machine which includes an open ended mold, trains of vertically Spaced opposed pairs of idler guide rolls below said mold, a set of power-driven pinch rolls below said guide rolls, and a curved casting guide below said Jinch rolls, the combination therewith of an improved guide roll arrangement comprising at least one opposed pair of ower-driven guide rolls among said idler guide rolls, an op- )osed pair of frames in said machine, bearing chocks mounted n said frames, said power-driven guide rolls being joumaled in aid chocks, backup rolls mounted in said frame and engaging aaid power-driven guide rolls, and initially adjustable spring neans mounted on said frame for applying a constant pressure said backup rolls, said power-driven guide rolls being cooperable with said pinch rolls to control forces on a slab as it travels therebetween.
  • a guide-roll arrangement as defined in claim 1 in which there are two pairs of power-driven guide rolls.
  • each of said frames includes inner and outer spaced apart transverse bars, fixtures slidably supported on said inner bar, said backup rolls being journaled in said fixtures, and spring means bearing against said fixtures, and cap screws thradedly engaging said outer bars 'and I bearing against said s'prih'g means.
  • a guide-roll arrangement as defined in claim 1 in which said frames are slidably removable from said machine.
  • a guide-roll arrangement as defined in claim I in which the surfaces of said power-driven guide rolls have right and left hand helical grooves extending from opposite ends toward the middle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
US699150A 1968-01-19 1968-01-19 Guide-roll arrangement for continuous casting Expired - Lifetime US3550674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69915068A 1968-01-19 1968-01-19

Publications (1)

Publication Number Publication Date
US3550674A true US3550674A (en) 1970-12-29

Family

ID=24808151

Family Applications (1)

Application Number Title Priority Date Filing Date
US699150A Expired - Lifetime US3550674A (en) 1968-01-19 1968-01-19 Guide-roll arrangement for continuous casting

Country Status (9)

Country Link
US (1) US3550674A (nl)
JP (1) JPS5026499B1 (nl)
BE (1) BE727080A (nl)
BR (1) BR6905643D0 (nl)
DE (1) DE1902117A1 (nl)
ES (1) ES362620A1 (nl)
FR (1) FR2000445A1 (nl)
GB (1) GB1254591A (nl)
NL (1) NL6900919A (nl)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752210A (en) * 1971-08-24 1973-08-14 Steel Corp Method for controlling forces on a strand as it solidifies
US3779303A (en) * 1971-01-08 1973-12-18 Fives Lille Cail Installation for continuous ingot casting
JPS50126522A (nl) * 1974-03-27 1975-10-04
US4074746A (en) * 1975-11-12 1978-02-21 Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft Supporting and guiding stand for continuously cast strands
US5964337A (en) * 1998-05-12 1999-10-12 Billco Manufacuring, Inc. Glass processing machine with adjustable roller supports
US20070119127A1 (en) * 2005-11-26 2007-05-31 Richard Anderson Shrink packaging articles using successive rollers with rotational axes at decreasing heights
CN102632207A (zh) * 2012-03-27 2012-08-15 马钢(集团)控股有限公司 一种薄板坯连铸用生产设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2481512A1 (de) 2011-01-26 2012-08-01 Voestalpine Stahl GmbH Verfahren zum Herstellen einer Rolle mit einer durch Auftragschweissen erzeugten Schicht ; Rolle zum Führen und/oder Stützen eines Strangs einer Stranggießanlage mit solcher Schicht

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114986B (de) * 1955-09-12 1961-10-12 Mannesmann Ag Vorrichtung zum Stranggiessen schwer schmelzbarer Metalle, insbesondere von Eisen und Stahl
NL277841A (nl) * 1961-05-04
FR1475058A (fr) * 1966-02-25 1967-03-31 G Sojuzny I Proekt Metallurgic Dispositif de guidage de demi-produits coulés en continu
FR1481068A (fr) * 1965-12-29 1967-05-19 Creusot Forges Ateliers Cage d'extraction pour installation de coulée continue de métaux

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779303A (en) * 1971-01-08 1973-12-18 Fives Lille Cail Installation for continuous ingot casting
US3752210A (en) * 1971-08-24 1973-08-14 Steel Corp Method for controlling forces on a strand as it solidifies
JPS50126522A (nl) * 1974-03-27 1975-10-04
JPS5423338B2 (nl) * 1974-03-27 1979-08-13
US4074746A (en) * 1975-11-12 1978-02-21 Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft Supporting and guiding stand for continuously cast strands
US5964337A (en) * 1998-05-12 1999-10-12 Billco Manufacuring, Inc. Glass processing machine with adjustable roller supports
US20070119127A1 (en) * 2005-11-26 2007-05-31 Richard Anderson Shrink packaging articles using successive rollers with rotational axes at decreasing heights
US7380653B2 (en) * 2005-11-26 2008-06-03 Kpc-Master's Craft International, Inc. Shrink packaging articles using successive rollers with rotational axes at decreasing heights
CN102632207A (zh) * 2012-03-27 2012-08-15 马钢(集团)控股有限公司 一种薄板坯连铸用生产设备

Also Published As

Publication number Publication date
DE1902117A1 (de) 1969-09-04
ES362620A1 (es) 1970-11-01
FR2000445B1 (nl) 1974-02-22
NL6900919A (nl) 1969-07-22
BR6905643D0 (pt) 1973-03-01
JPS5026499B1 (nl) 1975-09-01
BE727080A (nl) 1969-07-17
GB1254591A (en) 1971-11-24
FR2000445A1 (fr) 1969-09-05

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