US3811307A - Method of rolling metal sheet articles - Google Patents

Method of rolling metal sheet articles Download PDF

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Publication number
US3811307A
US3811307A US00157256A US15725671A US3811307A US 3811307 A US3811307 A US 3811307A US 00157256 A US00157256 A US 00157256A US 15725671 A US15725671 A US 15725671A US 3811307 A US3811307 A US 3811307A
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United States
Prior art keywords
article
rolls
rolling
peripheral speed
speed
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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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US00157256A
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English (en)
Inventor
V Vydrin
L Ageev
V Sosjurko
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to US00157256A priority Critical patent/US3811307A/en
Priority to GB3057671A priority patent/GB1343523A/en
Priority to DE2133058A priority patent/DE2133058C3/de
Priority to FR7124261A priority patent/FR2144528B1/fr
Application granted granted Critical
Publication of US3811307A publication Critical patent/US3811307A/en
Anticipated expiration legal-status Critical
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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions

Definitions

  • ABSTRACT A method of rolling metal sheet articles in which the rolls in an adjacent pair are rotated in opposite directions at different peripheral speeds under conditions of a rigid mechanical characteristicof the drive of the roll rotating at a higher peripheral speed and such a mechanical characteristic of the drive of the roll rotating at a lower peripheral speed that in the process of rolling the ratio of the peripheral speeds of the rolls is equal to the ratio of the thicknesses of the articles at input and output portions thereof before and after the rolling in the adjacent pair of rolls at a constant thickness of the output portion of the article and at a speed of movement of the output portion of the article equal to the peripheral speed of the roll rotating at a higher peripheral speed.
  • the present invention relates to a method of rolling metal sheet members, for example, strips, bands, sheets, foil, preferably for cold rolling of these articles.
  • the drawback is eliminated or reduced by controlling the ratio of the peripheral speeds of the rolls in accordance with the change in the thickness at the input portion of the article to be rolled. This is usually effected by means of an automatic system for controlling the process of rolling, said system being very complicated and expensive.
  • An object of the invention is to provide a method of rolling metal sheet articles between the driving rolls which would make it possible either to eliminate or to reduce the longitudinal draw-back of the article being rolled without using an automatic system of control the rolling process.
  • the mechanical characteristic of the drive of the roll rotating at a higher peripheral speed is absolutely rigid, or close to it while the mechanical characteristic of the drive of the roll rotating at a lower speed is selected so that in the process of rolling the ratio of the peripheral speeds of the rolls would be equal to the ratio of thicknesses of the article at the input and output portions thereof, the output portion of the article having a constant or almost constant thickness.
  • the present invention provides a method of rolling metal sheet articles between the driving rolls which makes it possible either to eliminate or to reduce the draw-back ofthe article being rolled by means ofa selfcontrollable process without using any automatic system for controlling the process of rolling.
  • the rolls 1 and2 are rotated by drives (not shown) in opposite directions at different peripheral speeds V, and V
  • the roll 1 is rotated at a higher peripheral speed than the roll 2.
  • the ratio of the peripheral speeds of the rolls 1 and 2 is equal to a ratio of the thicknesses of the article m before and after the rolling in the adjacent pair of the rolls 1 and 2, Le. V V h,,/h,.
  • the direction of rolling the article is shown by arrows in FIG. 1.
  • the static friction is a force when the article is moved over the roll without sliding.
  • the diagram in FIG. 1 may be used for evaluation of the action of forces 1 within the'origin of deformation in the process of deformation: the friction forces r at the opposite contact surfaces BE and DG of the origin of deformation are equal and oppositely directed so that the pressure acting on the rolled article m side rolls the rols is considerably reduced.
  • the drive of roll 1 rotated at a higher peripheral speed V operates under active (driving) conditions, i.e., provides for a torque coinciding with the direction of rolling, while the drive of roll 2 rotated at a lower peripheral speed V operates under reactive (braking) conditions, i.e., creates a torque reverse to the direction of rolling.
  • the initial blank of the article m" always has different longitudinal draw-back i.e., the thickness h, of the article before the rolling is different in various places at input.
  • the thickness of the article after the rolling is equal in all portions of featuring insignificant deviations from the predetermined constant thickness h,.
  • the mechanical characteristic of the drive roll 1 rotated at a higher peripheral speed is made absolutely or almost absolutely rigid, while the mechanical characteristic of the drive of roll 2 rotated at a lower peripheralspeed is selected such that in the process of rolling the ratio V,/V of the peripheral speeds of rolls 1 and 2 is equal to the ratio h /h, of the thicknesses of the article m at the input and output portions thereof at a constant or near constant thickness [1, of the output portion of the article m.
  • FIG. 2 shows a mechanical characteristic 3 of the drive of roll 1 rotated at a higher peripheral speed and a mechanical characteristic 4 of roll 2 rotated at a lower peripheral speed.
  • the drive of the roll 1 has an absolutely rigid mechanical characteristic 3, Le, the rotational speed of roll 1 does not change with a change of the load (torque).
  • the drive of the roll 2 has a soft (less rigid) characteristic 4, i.e., any increase in the load on the roll 2 is associated with a decrease in its rotational speed ensured by its drive,
  • the drive of roll 1 is loaded by the torque M while drive of the roll 2 is loaded by the torque M ln this case the number of revolutions per minute of the drive of roll 1 is equal to n, while the numb er'of revolutions per minute of roll 2 is equal to n;. If the thickness of the input portion of the article m exceeds the rated thickness h,,, the load on drives of the rolls 1 and 2 increases; the drive of the roll I develops a torque M,a, while the drive of the roll 2 develops a torque M a.
  • the proposed invention may sharply reduce the longitudinal draw-back of the ready sheet article and thus obtain a high-quality product.
  • the absence a complex and expensive system for automatically controlling the process of rolling makes it possible to reduce the cost of the rolling mill and the expenses producing sheet metal articles.
  • test rolling of metal bands having a thickness of 2 to 0.05 mm from carbon and alloyed steels according to the proposed method has confirmed the advantages and promises of this method of rolling metal sheet articles.
  • a method of rolling metal sheet articles between the driving rolls ofa rolling mill in which the rolls in an adjacent pair are rotated in opposite directions at different peripheral speeds while providing for a rigid or close to rigid mechanical characteristic of the drive of the roll rotating at a higher speed, whereby said higher speed is maintained under conditions of varying torque. and such a mechanical characteristic of the drive of the roll rotating at a lower peripheral speed, that its peripheral speed varies inversely with variations in the load thereon due to longitudinal variations in thickness of the input portion of the article, so that, during the rolling.
  • the ratio of the peripheral speeds of the rolls is variable so as to be maintained equal to the ratio of the thicknesses of the article at the input and output portions thereof before and after the rolling in the adjacent pair of rolls at a constant or close to constant thickness of the output portion of the article, and at a speed of movement of the output portion of the article equal to the peripheral speed of the roll rotating at a higher peripheral speed, tensile forces being applied to the input and output portions of the articles by successively enveloping the rolls by the article, first on said roll rotating at said lower peripheral speed, and then on said roll rotating at said higher peripheral speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
US00157256A 1971-06-28 1971-06-28 Method of rolling metal sheet articles Expired - Lifetime US3811307A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00157256A US3811307A (en) 1971-06-28 1971-06-28 Method of rolling metal sheet articles
GB3057671A GB1343523A (en) 1971-06-28 1971-06-30 Method of rolling metal sheet articles
DE2133058A DE2133058C3 (de) 1971-06-28 1971-07-02 Walzeinrichtung
FR7124261A FR2144528B1 (enrdf_load_stackoverflow) 1971-06-28 1971-07-02

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US00157256A US3811307A (en) 1971-06-28 1971-06-28 Method of rolling metal sheet articles
GB3057671 1971-06-30
DE2133058A DE2133058C3 (de) 1971-06-28 1971-07-02 Walzeinrichtung
FR7124261A FR2144528B1 (enrdf_load_stackoverflow) 1971-06-28 1971-07-02

Publications (1)

Publication Number Publication Date
US3811307A true US3811307A (en) 1974-05-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00157256A Expired - Lifetime US3811307A (en) 1971-06-28 1971-06-28 Method of rolling metal sheet articles

Country Status (4)

Country Link
US (1) US3811307A (enrdf_load_stackoverflow)
DE (1) DE2133058C3 (enrdf_load_stackoverflow)
FR (1) FR2144528B1 (enrdf_load_stackoverflow)
GB (1) GB1343523A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2399882A1 (fr) * 1977-08-12 1979-03-09 Ch Polt I Procede de laminage-etirage de produits metalliques plats
US4145902A (en) * 1977-05-27 1979-03-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling mill
US4145901A (en) * 1977-02-28 1979-03-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling mill
US4365496A (en) * 1977-03-01 1982-12-28 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling process
US4412439A (en) * 1981-05-04 1983-11-01 Olin Corporation Cooperative rolling mill apparatus and process
US4414832A (en) * 1981-09-11 1983-11-15 Olin Corporation Start-up and steady state process control for cooperative rolling
US4478064A (en) * 1982-03-04 1984-10-23 Olin Corporation Modifications to a cooperative rolling system for increasing _maximum attainable reduction per pass
US4781050A (en) * 1982-01-21 1988-11-01 Olin Corporation Process and apparatus for producing high reduction in soft metal materials
US20040250925A1 (en) * 2001-08-24 2004-12-16 Van Der Winden Menno Rutger Method for processing a metal slab or billet, and product produced using said method
US20050000678A1 (en) * 2001-08-24 2005-01-06 Van Der Winden Menno Rutger Method for processing a continuously cast metal slab or strip, and plate or strip produced in this way
US20050034500A1 (en) * 2001-08-24 2005-02-17 Van Der Winden Menno Rutger Device for processing a metal slab, plate or strip, and product produced using this device
US20110154877A1 (en) * 2008-02-19 2011-06-30 Michael Breuer Roll stand, particularly push roll stand

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808888C2 (de) * 1978-03-02 1983-03-10 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzanlage
JPS5829171B2 (ja) * 1978-09-05 1983-06-21 石川島播磨重工業株式会社 熱延鋼帯のデスケ−リング方法
JPS58157509A (ja) * 1982-03-10 1983-09-19 Hitachi Ltd 圧延機及び圧延方法
DE3231273A1 (de) * 1982-08-23 1984-02-23 SMS Schloemann-Siemag AG, 4000 Düsseldorf Verfahren zum auswalzen von metallischen werkstoffen, insbesondere bandmaterial, und walzwerk zur ausuebung des verfahrens

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526296A (en) * 1943-08-12 1950-10-17 United Eng Foundry Co Method and apparatus for processing strip metal
US3238756A (en) * 1961-05-03 1966-03-08 Gen Electric Material forming method and apparatus
US3253445A (en) * 1962-07-09 1966-05-31 Metal Box Co Ltd Apparatus for rolling strip metal
US3394574A (en) * 1965-04-02 1968-07-30 Metal Box Co Ltd Treatment of strip metal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526296A (en) * 1943-08-12 1950-10-17 United Eng Foundry Co Method and apparatus for processing strip metal
US3238756A (en) * 1961-05-03 1966-03-08 Gen Electric Material forming method and apparatus
US3253445A (en) * 1962-07-09 1966-05-31 Metal Box Co Ltd Apparatus for rolling strip metal
US3394574A (en) * 1965-04-02 1968-07-30 Metal Box Co Ltd Treatment of strip metal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
L. S. Coffin, Jr., Status of Contact Bend Stretch Rolling , Journal of Metals, Aug. 1967, pp. 14 22. *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145901A (en) * 1977-02-28 1979-03-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling mill
US4365496A (en) * 1977-03-01 1982-12-28 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling process
US4145902A (en) * 1977-05-27 1979-03-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling mill
FR2399882A1 (fr) * 1977-08-12 1979-03-09 Ch Polt I Procede de laminage-etirage de produits metalliques plats
US4385511A (en) * 1977-08-12 1983-05-31 Vydrin Vladimir N Method of rolling metal articles
US4412439A (en) * 1981-05-04 1983-11-01 Olin Corporation Cooperative rolling mill apparatus and process
US4414832A (en) * 1981-09-11 1983-11-15 Olin Corporation Start-up and steady state process control for cooperative rolling
US4781050A (en) * 1982-01-21 1988-11-01 Olin Corporation Process and apparatus for producing high reduction in soft metal materials
US4478064A (en) * 1982-03-04 1984-10-23 Olin Corporation Modifications to a cooperative rolling system for increasing _maximum attainable reduction per pass
US20040250925A1 (en) * 2001-08-24 2004-12-16 Van Der Winden Menno Rutger Method for processing a metal slab or billet, and product produced using said method
US20050000678A1 (en) * 2001-08-24 2005-01-06 Van Der Winden Menno Rutger Method for processing a continuously cast metal slab or strip, and plate or strip produced in this way
US20050034500A1 (en) * 2001-08-24 2005-02-17 Van Der Winden Menno Rutger Device for processing a metal slab, plate or strip, and product produced using this device
US7341096B2 (en) 2001-08-24 2008-03-11 Corus Technology Bv Method for processing a continuously cast metal slab or strip, and plate or strip produced in this way
US7546756B2 (en) * 2001-08-24 2009-06-16 Corus Technology Bv Method for processing a metal slab or billet, and product produced using said method
US20110154877A1 (en) * 2008-02-19 2011-06-30 Michael Breuer Roll stand, particularly push roll stand
US9770745B2 (en) 2008-02-19 2017-09-26 Sms Siemag Ag Roll stand, particularly push roll stand

Also Published As

Publication number Publication date
GB1343523A (en) 1974-01-10
FR2144528A1 (enrdf_load_stackoverflow) 1973-02-16
DE2133058B2 (de) 1977-09-15
FR2144528B1 (enrdf_load_stackoverflow) 1974-03-08
DE2133058C3 (de) 1978-04-27
DE2133058A1 (de) 1973-01-18

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