US3580033A - Rolling mill for producing thin strip stock - Google Patents

Rolling mill for producing thin strip stock Download PDF

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Publication number
US3580033A
US3580033A US799228A US3580033DA US3580033A US 3580033 A US3580033 A US 3580033A US 799228 A US799228 A US 799228A US 3580033D A US3580033D A US 3580033DA US 3580033 A US3580033 A US 3580033A
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United States
Prior art keywords
rolls
units
rolling mill
driving
set forth
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Expired - Lifetime
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US799228A
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English (en)
Inventor
Pierre Gay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie des Ateliers et Forges de la Loire SA
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Compagnie des Ateliers et Forges de la Loire SA
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Publication of US3580033A publication Critical patent/US3580033A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/222—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a rolling-drawing process; in a multi-pass mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Definitions

  • Rolling mill for producing thin strip stock which comprises: a first tension unit acting as a retaining unit, a second tension unit acting as a driving unit, said first and second units comprising each a number of rolls driven at a same peripheral velocity from driving means, said strip to be rolled being passed over said rolls; coupling means arranged between said first and second units and adapted to impart a constant and possibly adjustable value to the ratio of the tangential speeds of said rolls of said first and second units, means for driving with an adjustable torque the combined mechanism consisting of said first and second tension units, and a four-high stand disposed between said units and provided with work rolls of relatively small diameter rotatably driven by frictional engagement from positively driven supporting rolls.
  • the improved rolling mill according to this invention comprises the following two principal features:
  • the tinning line will comprise in succession the double-reduction rolling mill, a scouring equipment and eventually the tinning equipment proper.
  • the double-reduction can be performed to the requisite standards while obtaining and end product having very close thickness tolerances and a satisfactory flatness.
  • a rolling mill comprises in combination a first tensioning or retaining unit, a second tensioning or driving unit, each unit comprising a number of rolls driven at a same peripheral speed by adequate driving means, the strip to be rolled passing over said rolls; coupling means disposed between said two units and adapted to impart a constant, possibly adjustable, value to the tangential speed ratio of the rolls of said two units and a four-high stand disposed between said two units and provided with working rolls of relatively small diameter which are rotatably driven by frictional contact from driven supporting rolls.
  • the four-high stand supporting rolls are driven at a given, possibly adjustable speed and the mechanism consisting of said pair of tensioning units is driven under adjustable-torgue conditions.
  • hydraulic cylinder and piston units are used for providing the clamping force of said fourhigh stand.
  • the means for driving said tensioning units comprise first gear means adapted to synchronize the movements of rotation of the rolls of said retaining unit; second gear means similar to said first gear means for synchronizing the movements of rotation of the rolls of said driving unit; a driving shaft for each one of said units; a coupling gear mechanism disposed between said driving shafts for providing a fixed or possibly adjustable gear ratio between the rotational speeds of said and a coupling gear mechanism driving shaft to which an adjustable torque is applied.
  • variable-speed reduction gearing is so associated with said coupling gear mechanism that the ratio of the rotational speeds of said unit driving shafts can be adjusted at will.
  • the adjustable torque applied to said coupling gear mechanism driving shaft is produced by a motor.
  • said coupling gear mechanism driving shaft is driven in turn through a clutch adapted to slip when a predetermined and adjustable torque valve is attained, said clutch being driven in turn from a constant-speed motor.
  • the rolling mill according to this invention may advantageously comprise two identical four-high stands disposed tandem wise between said tensioning units and adapted to be operated by turns.
  • FIG. 1 illustrates in diagrammatical side-elevational view a typical construction of the rolling mill according to this inven tion
  • FIG. 2 is a diagram illustrating the forces to which the working rolls of a four-high stand are submitted, assuming that the supporting rolls of this stand are positively driven as in the rolling mill of this invention;
  • FIG. 3 illustrates diagrammatically a typical form of embodiment of the driving means contemplated for rolling mill according to this invention.
  • FIG. 4 is a detailed view of the arrangement of FIG. 3.
  • the rolling mill comprises one or two high stands disposed between two units adapted to continuously tension the metal strip to be thin-rolled.
  • the retaining unit I disposed at the inlet end of the device (it is assumed that the strip 5 travels in the direction of the arrow f) comprises five rolls 2 and the driving unit 3 disposed at the outlet end also comprises five rolls 4.
  • the strip 5 is passed in succession over rolls 2, then over rolls 4, as shown in the drawings. 0
  • the rolls 2 of unit 1 are operatively and mechanically interconnected so that they revolve at a substantially uniform peripheral speed.
  • the rolls 4 of unit 3 are interconnected in the same fashion.
  • Mechanical gear transmission means are provided between the retaining unit 1 and the driving unit 3 so that the ratio of the peripheral speed of the rolls of unit 1 to the peripheral speed of the rolls of unit 3 be constant throughout the operation of the device. Under these conditions, the action of the units 1 and 3 causes the strip 5 to be elongated.
  • a presser roller 6 is provided at the inlet end of the retaining unit I and a similar presser roller 7 is also provided at the outlet of the driving unit 3 so that the strip 5 will remain unstressed upstream of unit 1 and downstream of unit 3.
  • a rolling stand 8 is disposed between said units 1 and 3.
  • this rolling stand consists of two tandem-arranged identical four-high stands. However, only one of these four-high stands is operated, the presence of two paired stands enabling the replacement of worn work rolls of one stand during the operation of the other stand, so that the operation may proceed as continuously as possible.
  • Each four-high stand comprises tow work rolls 9.
  • the diameter of these work rolls is relatively small in order to facilitate the rolling of thin products; therefore, these rolls are not positively driven.
  • Each work roll is therefore equipped with driven supporting rolls 10 so as to be driven therefrom by frictional contact therewith.
  • the clamping system consists of hydraulic cylinder and piston units 1 1.
  • the strip exerts on the work rolls 9 a vertical reaction R- (the clamping effort).
  • This reaction R is not coplanar to the axes a rolls 9 and creates a reaction torque cancelled by the friction forces F developing between the supporting and work rolls and also by.the retaining forces Fr and traction forces Ft exerted by the strip.
  • This assembly of horizontal forces F, Fr and Ft has a horizontal resultant T exerted against the axis of work rolls 9.
  • This reaction T causes the work roll 9 to yield in the horizontal plane (inasmuch as small-diameter work rolls are used).
  • the rolling mill according to this invention has hydraulic clamping means; therefore, the clamping efiort R can be adjusted to the desired value, the variations in the other parameters leaving R unchanged. (This would not be obtainable with mechanical clamping means). Besides, in this rolling mill the elongation is preset or imposed, so that the desired reduction will be obtained.
  • the rolling mill according to this invention is characterized in that it is so driven that the supporting rolls are driven at a given, possibly adjustable speed, and that the.
  • FIG. 3 illustrates by way of example a kinematic chain of the drive between a motor and the tension units 1 and 2 of a rolling mill according to this invention.
  • each roll 2 has wedged or keyed thereon a pinion such as 12.
  • This set of gears 12 will synchronize the rotational movements of rolls 2.
  • a similar set of gears 13 is provided for synchronizing the rotational movements of rolls 4.
  • a drive shaft emerges from each tension unit 1 and 2, as shown at 14 and 15 respectively.
  • These drive shafts 14 and 15 are drivingly interconnected by a coupling gear mechanism 16 providing a fixed gear ratio between the rotational speeds of shafts 14 and 15.
  • the coupling gear mechanism 16 comprises a driving shaft 17 receiving an adjustable torque.
  • the motor producing this torque is shown by way of example at 18 in the drawings, but it would not constitute a departure from the spirit of the invention to substitute a clutch for this motor, this clutch being adapted to slip when a predetermined torque value is attained, and being driven from a constant-speed motor.
  • the rolls 10 supporting the work rolls 9 drive these work rolls by frictional contact.
  • a drive motor 22 (FIG. 4) rotatably driving a shaft 24 may be provided.
  • This shaft 24 transmits the drive to a gearing 26 driving in turn the shafts 28 of rolls 10.
  • a rolling mill for producing a relatively thin metal strip comprising driving means, a first tension unit acting as a retaining unit, a second tension unit acting as a driving unit, said first and second units comprising each a number of rolls driven at the same peripheral velocity from said driving means, means for passing said strip to be rolled over said rolls, coupling means interconnecting said first and second units to provide a predetermined valve to the ratio of the tangential speeds of said rollsof said first and second units, means for driving with predetermined torque and combined mechanism consisting of said first and second tension units, and a fourhigh stand disposed between said units comprising positively driven supporting rolls and work rolls of relatively small diameter rotatably driven by frictional engagement from said supporting rolls.
  • said means for driving the combined mechanism comprising said first and second tension units comprise gear means to synchronize the rotational movements of the rolls of said retainingunit, gear means to synchronize the rotational movements of the rolls of said driving unit, a drive shaft for each one of said units, a gear mechanism arranged between said drive shafts for imparting a speed ratio between the rotational speeds of said shafts, and a shaft for driving said gear mechanism under predetermine torque conditions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
US799228A 1968-02-16 1969-02-14 Rolling mill for producing thin strip stock Expired - Lifetime US3580033A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR140176 1968-02-16

Publications (1)

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US3580033A true US3580033A (en) 1971-05-25

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US799228A Expired - Lifetime US3580033A (en) 1968-02-16 1969-02-14 Rolling mill for producing thin strip stock

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US (1) US3580033A (enrdf_load_html_response)
DE (1) DE1906568A1 (enrdf_load_html_response)
FR (1) FR1563057A (enrdf_load_html_response)
GB (1) GB1224301A (enrdf_load_html_response)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783667A (en) * 1971-04-14 1974-01-08 Ungerer Irma Apparatus for straightening metal by stretching
EP0369555A3 (de) * 1988-11-17 1991-01-16 MANNESMANN Aktiengesellschaft Vorrichtung zum Herstellen von warmgewalztem Stahlband aus einem bandförmig stranggegossenem Vormaterial
US5660070A (en) * 1996-03-18 1997-08-26 Carolina Steel Corporation Cold rolling mill with tension bridle
US5693287A (en) * 1994-04-27 1997-12-02 Hoogovens Staal Bv Apparatus and method for the manufacture of DR steel strip
US5921152A (en) * 1998-02-03 1999-07-13 Morgan Construction Company Optional multi-ratio gear transmission system
US20060134258A1 (en) * 2004-12-21 2006-06-22 Hanson Dana R Web handling roll stand
US20080264510A1 (en) * 2006-09-25 2008-10-30 Contech Construction Products Inc. Apparatus for producing helically corrugated metal pipe and related method
US20100319905A1 (en) * 2007-08-03 2010-12-23 Zupanick Joseph A System and method for controlling liquid removal operations in a gas-producing well

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436762A1 (de) * 1990-01-12 1991-07-17 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Anlage zum Erzeugen einer vorgegebenen Streckgrenzen-Festigkeit und Oberflächenrauhigkeit im Zuge des Kaltnachwalzens vorbehandelter Metallbänder
RU2104105C1 (ru) * 1996-03-12 1998-02-10 Александр Арсентьевич Чижиков Непрерывная группа стана для производства толстых полос
CN117772795B (zh) * 2024-02-23 2024-05-10 太原理工大学 一种稳定轧制过程辊间传动比的稳定装置和轧制成形设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1881056A (en) * 1928-07-05 1932-10-04 William C Mcbain Tension device
US2118560A (en) * 1934-10-23 1938-05-24 American Rolling Mill Co Reversible rolling under controlled tension
US2287380A (en) * 1940-10-15 1942-06-23 Clarence J Klein Metal rolling
US3098403A (en) * 1959-04-11 1963-07-23 Moeller & Neumann Gmbh Rolling mill structure
US3394574A (en) * 1965-04-02 1968-07-30 Metal Box Co Ltd Treatment of strip metal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1881056A (en) * 1928-07-05 1932-10-04 William C Mcbain Tension device
US2118560A (en) * 1934-10-23 1938-05-24 American Rolling Mill Co Reversible rolling under controlled tension
US2287380A (en) * 1940-10-15 1942-06-23 Clarence J Klein Metal rolling
US3098403A (en) * 1959-04-11 1963-07-23 Moeller & Neumann Gmbh Rolling mill structure
US3394574A (en) * 1965-04-02 1968-07-30 Metal Box Co Ltd Treatment of strip metal

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783667A (en) * 1971-04-14 1974-01-08 Ungerer Irma Apparatus for straightening metal by stretching
EP0369555A3 (de) * 1988-11-17 1991-01-16 MANNESMANN Aktiengesellschaft Vorrichtung zum Herstellen von warmgewalztem Stahlband aus einem bandförmig stranggegossenem Vormaterial
US5693287A (en) * 1994-04-27 1997-12-02 Hoogovens Staal Bv Apparatus and method for the manufacture of DR steel strip
US5833778A (en) * 1994-04-27 1998-11-10 Hoogovens Groep B.V. Apparatus and method for the manufacture of DR steel strip
US5660070A (en) * 1996-03-18 1997-08-26 Carolina Steel Corporation Cold rolling mill with tension bridle
US5921152A (en) * 1998-02-03 1999-07-13 Morgan Construction Company Optional multi-ratio gear transmission system
US20060134258A1 (en) * 2004-12-21 2006-06-22 Hanson Dana R Web handling roll stand
US7165962B2 (en) 2004-12-21 2007-01-23 Hanson Dana R Web handling roll stand
US20080264510A1 (en) * 2006-09-25 2008-10-30 Contech Construction Products Inc. Apparatus for producing helically corrugated metal pipe and related method
US7574886B2 (en) * 2006-09-25 2009-08-18 Contech Construction Products Inc. Apparatus for producing helically corrugated metal pipe and related method
US20100319905A1 (en) * 2007-08-03 2010-12-23 Zupanick Joseph A System and method for controlling liquid removal operations in a gas-producing well

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Publication number Publication date
FR1563057A (enrdf_load_html_response) 1969-04-11
GB1224301A (en) 1971-03-10
DE1906568A1 (de) 1969-09-18

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