US3786664A - Rolling mill module - Google Patents

Rolling mill module Download PDF

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Publication number
US3786664A
US3786664A US00235992A US3786664DA US3786664A US 3786664 A US3786664 A US 3786664A US 00235992 A US00235992 A US 00235992A US 3786664D A US3786664D A US 3786664DA US 3786664 A US3786664 A US 3786664A
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US
United States
Prior art keywords
roll
rolls
pair
rolling mill
rolling
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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
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US00235992A
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English (en)
Inventor
D Jones
H Orr
F Qualey
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STEEL Corp US
United States Steel Corp
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STEEL CORP
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Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • 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
    • B21B2031/021—Integral tandem mill housings
    • 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

Definitions

  • the semi-finished cast product can be finished by one of two means: (1) by reheating the cast product and finishing it in a conventional rolling mill; or (2) by rolling the cast product directly from the casting machine.
  • the temperature of the cast product is very critical due to the slow casting speed.
  • c. has its rolls adapted to operate dry by the utilizat- 7 tion of a hot die steel for a roll collar and high alloy steel for the roll body;
  • d. is equipped to be cooled by air, steam, water vapor, or the like;
  • g. has its vertical rolls removable in a vertical plane and is then tilted about to remove the horizontal rolls in the vertical plane;
  • h. uses differential pressure roll spacing means to space a pair of rolls in the rolling position.
  • the rolling mill module has a frame, a first pair of rolls joumaled in the frame and a second pair of rolls also joumaled in the frame and spaced a predetermined distance from the first pair of rolls so that the temperature drop in the billet between the first pair of rolls and the second pair of rolls is minimized.
  • the rolling mill module is adapted to be readily removed from the rolling mill for repairs or replacement.
  • FIG. 1 is a diagrammatic side elevational view of a multistrand (i.e., four strand) continuous casting line showing diagrammatically the preheat means, the scale breaker and two of the rolling mill modules of the present invention associated with line No. l of the plural line continuous casting apparatus;
  • FIG. 2 is a diagrammatic plan view of the rolling mill modules, preheat means and scale breakers associated with the four strands of the continuous casting apparatus;
  • FIG. 3 is a horizontal sectional view of a pair of vertical rolls of the module taken along the line 33 of FIG. 2 in the direction of the arrows;
  • FIG. 4 is a diagrammatic plan view, partially in section, of the pressure control means associated with the pair of vertical rolls shown in FIG. 3;
  • FIGS. 5 and 6 are diagrammatic plan views respectively of rolling mill modules having two pairs of vertical rolls and two pairs of horizontal rolls respectively.
  • this invention is particularly adapted for use in conjunction with a continuous casting apparatus, and hence it has been so illustrated and will be so described.
  • each rolling mill module 30a,30b has a frame 38 (FIGS. 1-6).
  • a first pair of rolls R, (FIGS. 1,2) of the horizontal roll type are journaled in the frame 38.
  • a second pair of rolls R (FIGS. 1,2) of the vertical type rolls are journaled in the frame 38 and spaced a predetermined distance D (FIG. 2) from the first pair of rolls R, so that the temperature drop in the strand 14, etc. between the first pair of rolls R and the second pair of rolls R is minimized.
  • the rolling mill module 30a or 30b is adapted to be readily removed from the rolling mill by the provision of engaging means, such as lugs 40 (FIGS. 1,2,S,6) or the like on the frame 38, which lugs 40 are adapted to be engaged by a removal means, such as a crane or the like, not shown, so that the rolling mill module 30a,30b may be readily removed from the continuous casting apparatus 10.
  • the rolling mill module 30a has a third pair of horizontal rolls R, (FIGS. 1,2) and a fourth pair of vertical rolls R
  • the adjacent rolling mill module 30b has a fifth pair of horizontal rolls R,,,, a sixth pair of vertical rolls R a seventh pair of horizontal rolls R and an eighth pair of vertical rolls Ray.
  • a strand, such as the first strand 14, having a square cross section of about 7- /1 inches is fed into the first and second pair of rolls R, and R (FIGS. 1,2) where such strand I4 is reduced in square cross section to about 6-% inches. Passage of the strand 14' through the third and fourth sets of rolls R and R further reduce the square cross section of the strand 14 to about 6 inches. Such strand [4 is further reduced in roll pairs R and R to about a square cross section of 5 inches and finally reduced in roll pairs R and R to a final square cross section of about 4 inches.
  • each of the eight pairs of rolls R R R R R R R R and R basically have the same construction and operation, the individual pair of rolls will be described with respect to FIG. 3 and the vertical pair of rolls R Vertical Roll Pair R
  • the frame 38 (FIGS. 1-6) of the rolling mill module 30a is provided with partitions 42 (FIGS. 3,4) between adjacent pairs of rolls, such as the horizontal rolls R, to the left of the vertical roll pair R and the horizontal roll pair R to the right of the vertical roll pair R as viewed in FIG. 1.
  • the vertical roll pair R has a first roll 44 (FIGS. 3,4) having a first roll sleeve 46 (FIG. 3) mounted on a first roll shaft 48 (FIG. 3) by means of a tolerance fit between the roll sleeve 46 and the roll shaft 48.
  • the first roll shaft 48 is journaled in suitable bushings (not shown) in the frame 38 and is rotated by means of flexible drive shaft similar to the device shaft 50 (FIGS. 3,4).
  • This first roll 44 is mounted in a first roll mounting means, such as a roll chuck 52 (FIGS. 3,4) or the like, suitably of split half construction secured together by bolts 54 (FIG. 3).
  • the means utilized to move the first roll 44 from an open position (not shown in FIG.
  • a first fluid operating means such as a first fluid cylinder 56 (FIGS. 3,4) having an operating piston 58 (FIGS. 3,4) engageable with the roll chuck 52 through a first shim means 60 (FIG. 3) secured to the roll chuck 52 by means of bolts 62 (FIG. 3).
  • the roll chuck 52 is reciprocable between the open position (not shown in FIG. 3) and the rolling position shown in FIG. 3 on guides or liners 64 (FIG. 3) carried either by the roll chuck S2 or the partition 42 of the frame 38.
  • the second roll 66 (FIGS. 3,4) of the vertical roll pair R is similarly constructed and is actuated by a second fluid operating means, such as the second fluid cylinder 68 (FIGS. 3,4).
  • a second fluid operating means such as the second fluid cylinder 68 (FIGS. 3,4).
  • the first fluid cylinder 56 is adapted through its larger diameter piston 58 than the piston 70 (FIGS. 3,4) of the second fluid cylinder 68 to provide a greater fluid pressure on the first roll 44 than the second fluid cylinder 68 applies to the second roll 66 so that spacing means, such as a second shim means 72 (FIG. 3) carried by either of the roll chucks 52 limits the operating stroke of the second fluid cylinder 68 when the first fluid cylinder 56 reaches the end of its stroke, thereby providing the predetermined rolling spacing d (FIG. 3) between the first roll 44 and the second roll 66, as the first roll 44 and the second roll 66 move from the open position (not shown in FIG. 3) to the rolling position (FIG.
  • the strand 14 moves (in the direction of the horizontal arrow in FIG. 3) along the centerline AA (FIG. 3) on the conveyor means 32 (FIG. 2) or the centerline of the adjacent pairs of rolls R and R (FIG. 3) through a tapered opening 74 in the left hand partition 42 (as viewed in FIG. 3) of the frame 38; through the rolls 44 and 66 in the rolling position shown in FIG. 3; and through an outlet 76 in the other right hand partition 42, as viewed in FIG. 3, adjacent the exit side of the pair of vertical rolls Rzy.
  • first fluid cylinder 56 and the second fluid cylinder 68 are of the single acting type as shown in FIG. 4, thp pair of vertical rolls R is provided with a roll retracting means 78 (FIG. 3).
  • This roll retracting means 78 (FIG. 3) is associated with one of the rolls 44,66 of the first roll 44 and the second roll 66 (in this case, the second roll 66) and is adapted to engage the other roll (in this case the first roll 44 of the first roll 44 and the second roll 66) so that the fluid pressure is removed (as hereinafter explained) from the first fluid cylinder 56 and the second fluid cylinder 68, the roll retracting means 78 returns the first roll 44 and the second roll 66 to the open position (not shown in FIG. 3).
  • the roll retracting means 78 has a pair of fluid cylinders 80a and 80b (FIG. 3) carried by the roll chuck 52 associated with the second roll 66.
  • the cylinders 80a,80b are secured to the roll chuck 52 associated with the second roll 66 by means of bolts 82 (FIG. 3).
  • the operating pistons 84a,84b of the fluid cylinders 80a,80b engage the second shim means 72 carried by the roll chuck 52 associated with the first roll 44 and move the first roll 44 and second roll 66 from the rolling position shown in FIG. 3 to the open position (not shown in FIG. 3).
  • the fluid enters the single acting fluid cylinders 80a,80b through inlets 86a,86b (FIG. 3).
  • each rolling mill module 30a,30b is provided with a pressure release means 88 (FIG. 4) which pressure release means 88 is operable when the pressure between the first roll 44 and the second roll 66 (when such rolls 44 and 66 are in the rolling position of FIG. 3) exceeds a predetermined pressure, such as about 2,700 psi, to release such fluid pressure on the first fluid cylinder 56 and the second fluid cylinder 68 thereby preventing damage to the first roll 44 and the second roll 66.
  • This excessive pressure may be caused by cast cold head ends, cold tail ends, or the like.
  • the pressure release means 88 automatically releases the first roll 44 and the second roll 66 from the rolling position shown in FIG. 3.
  • the pressure release means 88 has a normally closed pressure switch 90 (FIG. 4) of the type manufactured by Allen Bradley Company, Milwaukee, Wis., connected by means of a branch line 92 to the fluid supply line 94 (FIG. 4).
  • the fluid supply line 94 extends from the hydraulic fluid supply identified by the arrow and the legend FROM HYDRAULIC FLUID SUPPLY through a four-way, two position hydraulic directional valve 96 (FIG. 4) to the first fluid cylinder 56 and the second fluid cylinder 68.
  • the hydraulic directional valve 96 is normally held in the release position shown in FIG. 4 by means of biasing means, such as a spring 98 (FIG. 4) or the like, and the normally closed pressure switch 90 is similarly held in the normally closed position by means of a similar spring 100 (FIG. 4) or the like.
  • the two position valve 96 is of the type manufactured by Republic Manufacturing Company, Cleveland, Ohio.
  • the means utilized to move the pressure relief valve 96 from the relief position (shown in FIG. 4) to the fluid operating position (not shown in FIG. 4) is a solenoid 102 (FIG. 4).
  • Such solenoid 102 t and the pressure switch 90 are connected to and operable by an electrical operating circuit 104 (FIG. 4).
  • This circuit 104 has lines LI,L2 extending from a suitable voltage supply, indicated by the legend AC SUPPLY, through a normally open holding contact R of a relay 108 to one side of the solenoid I02 and to the other side of such solenoid 102 respectively.
  • a parallel line L3 connects the line Ll through the pressure switch 90, the relay 108, a manually operated, normally open, starting switch 110, and a manually operated, normally closed stop switch 112 to the line L2 thereby connecting the pressure switch 90, the relay 108 and the switches I10 and 112 in parallel with the solenoid 102.
  • a normally open holding contact R, of the relay 108 is disposed in parallel about the normally open manually operating starting switch 110, which switch 110 and the stop switch 112 are disposed in the pulpit (not shown) associated with the rolling mill (not shown).
  • the normally open manually operated starting switch 110 is closed, thereby energizing the relay I08 and closing both the normally open hold contact R, and the normally open contact R of such relay I08 with attendant energization of the solenoid I02 so that the hydraulic directional valve 96 is moved downwardly from the position shown in FIG. 4 to the fluid applying position (not shown) where fluid pressure is applied directly through line 94 to the first fluid cylinder 56 and the second fluid cylinder 68 to move the rolls 44 and 66 to the closed or rolling position shown in FIG. 4.
  • the pressure switch 90 moves to the open position, thereby deenergizing the relay 108 with attendant opening of the now closed holding contacts R, and R of such relay 108 and the resultant deenergization of the solenoid 102 and the return of the hydraulic directional valve 96 from the fluid operating position (not shown in FIG. 4) to the pressure relief position shown in FIG. 4 with the help of the biasing spring 98.
  • the manually operated, normally closed stop switch 112 located in the pulpit (not shown) in the rolling mill (not shown) may be opened, thereby deenergizing the electrical operating circuit 104 as above described.
  • a drive means 114 is provided for the purpose of rotating the first roll 44 and the second roll 66.
  • the drive means 114 has a motor 116 connected through a gear reducer 118 to the flexible shaft 50 shown in FIGS. 2 and 3.
  • Each individual drive means I14 is operable to rotate the flexible shaft 50 and the attached individual pairs of rolls R R etc. in the direction of the arrows shown in FIGS. 2 and 3.
  • the predetermined distance D (FIG. 2) between the roll centers of the first pair of rolls R, and the second pair of rolls R should desirably be less than the maximum roll diameter of the first pair of rolls R, and the second pair of rolls R plus about 4 inches, thereby minimizing the spacing between adjacent pairs of the rolls, such as the pairs R R etc. from about 18 to about 20 inches.
  • the rolling mill module 30 may have mounted within the frame 38 a first pair R of the vertical rolls and a second pair R of vertical rolls.
  • a rolling mill module 30 may have a first set R, of the horizontal rolls and a second set R of horizontal rolls.
  • first pair R, of horizontal rolls and the second pair R of the vertical rolls shown in FIG. 2 may be rotated 90 from the position shown in FIG. 2 so that such pairs R and R of rolls may be utilized to reduce a billet having a diamond cross section rather than square cross section, shown in FIG. 2.
  • a rolling mill module for a rolling mill for rolling a billet said module having:
  • said module being adapted to be readily removed from said rolling mill
  • one pair of rolls of said first pair of rolls and said second pair of rolls has:
  • first fluid operating means connected to one roll of said first roll and said second roll; 4. a second fluid operating means connected to the other roll of said first roll and said second roll; 5. said first fluid operating means being adapted to provide greater fluid pressure on said one roll than said second fluid operating means applies to said other roll; and
  • spacing means carried by one roll of said first roll and said second roll so that when said first fluid operating means reaches the end of its stroke, said spacing means limits the operating stroke of said second fluid operating means thereby providing a predetermined rolling spacing between said first roll and said second roll as said first roll and said second roll move from an open position to a rolling position.
  • a second roll mounting means for mounting said second roll and adapted to be engaged by said second fluid mounting means.
  • a second drive means connected to said second pair of rolls for rotating said second pair of rolls.
  • a rolling mill module for a rolling mill for rolling a billet said module having:
  • said predetermined distance between the roll centers of said first pair of rolls and said second pair of rolls is less than the maximum roll diameter of said first pair of rolls and said second pair of rolls plus about four inches.
  • a second drive means connected to said second pair of rolls for rotating said second pair of rolls.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
US00235992A 1972-03-20 1972-03-20 Rolling mill module Expired - Lifetime US3786664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23599272A 1972-03-20 1972-03-20

Publications (1)

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US3786664A true US3786664A (en) 1974-01-22

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Application Number Title Priority Date Filing Date
US00235992A Expired - Lifetime US3786664A (en) 1972-03-20 1972-03-20 Rolling mill module

Country Status (12)

Country Link
US (1) US3786664A (de)
JP (1) JPS495848A (de)
BE (1) BE797072A (de)
BR (1) BR7301910D0 (de)
CA (1) CA965999A (de)
DE (1) DE2313607A1 (de)
ES (1) ES412834A1 (de)
FR (1) FR2176967B1 (de)
GB (1) GB1422723A (de)
IT (1) IT980633B (de)
NL (1) NL7303890A (de)
ZA (1) ZA731786B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045400A1 (de) * 1980-08-01 1982-02-10 Fried. Krupp Gesellschaft mit beschränkter Haftung Anlage zum Giesswalzen von Stahl mit hohen Geschwindigkeiten
US5000023A (en) * 1988-05-05 1991-03-19 Sms Schloemann-Siemag Aktiengesellschaft Operating method and rolling mill train for continuously rolling a profiled billet to a predetermined finished cross-sectional shape of accurate size
US20080276680A1 (en) * 2005-02-23 2008-11-13 Heinrich Marti Milling Device for Inline Rolling a Steel Band Produced Especially by Means of a Twin-Roll Continuous Casting Process

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366694A (en) * 1980-09-17 1983-01-04 Morgan Construction Company Compact rolling mill
GB2087281B (en) * 1980-11-17 1984-08-22 Davy Loewy Ltd Triplet roling mill
DE10103683B4 (de) * 2001-01-27 2010-01-21 Sms Siemag Aktiengesellschaft Walzvorrichtung für Walzstraßen mit gestaffelten Gerüsten, insbesondere Tandemwalzanlage
DE102007059072A1 (de) * 2007-12-07 2009-06-10 Khd Humboldt Wedag Gmbh Rollenpresse mit zwei Losrollen
SE538617C2 (en) 2014-11-20 2016-10-04 Ehrnberg Solutions Ab Fluid flow converter
SE542282C2 (en) 2018-02-01 2020-04-07 Spira Energy Ab Fluid flow converter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575028A (en) * 1969-01-28 1971-04-13 Blaw Knox Co Rolling mills
US3621694A (en) * 1969-05-05 1971-11-23 United Eng Foundry Co Rolling mill
US3677056A (en) * 1969-05-27 1972-07-18 Ilario Properzi Multiple housing rolling mill

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575028A (en) * 1969-01-28 1971-04-13 Blaw Knox Co Rolling mills
US3621694A (en) * 1969-05-05 1971-11-23 United Eng Foundry Co Rolling mill
US3677056A (en) * 1969-05-27 1972-07-18 Ilario Properzi Multiple housing rolling mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045400A1 (de) * 1980-08-01 1982-02-10 Fried. Krupp Gesellschaft mit beschränkter Haftung Anlage zum Giesswalzen von Stahl mit hohen Geschwindigkeiten
US5000023A (en) * 1988-05-05 1991-03-19 Sms Schloemann-Siemag Aktiengesellschaft Operating method and rolling mill train for continuously rolling a profiled billet to a predetermined finished cross-sectional shape of accurate size
US20080276680A1 (en) * 2005-02-23 2008-11-13 Heinrich Marti Milling Device for Inline Rolling a Steel Band Produced Especially by Means of a Twin-Roll Continuous Casting Process
US7984634B2 (en) * 2005-02-23 2011-07-26 Main Management Inspiration Ag Milling device for inline rolling a steel band produced especially by means of a twin-roll continuous casting process

Also Published As

Publication number Publication date
AU5344073A (en) 1974-09-19
ES412834A1 (es) 1976-01-01
IT980633B (it) 1974-10-10
BE797072A (fr) 1973-09-20
FR2176967B1 (de) 1978-12-01
BR7301910D0 (pt) 1974-06-27
ZA731786B (en) 1973-12-19
NL7303890A (de) 1973-09-24
GB1422723A (en) 1976-01-28
CA965999A (en) 1975-04-15
FR2176967A1 (de) 1973-11-02
JPS495848A (de) 1974-01-19
DE2313607A1 (de) 1973-09-27

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Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

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