US2121929A - Rolling mill - Google Patents

Rolling mill Download PDF

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Publication number
US2121929A
US2121929A US156779A US15677937A US2121929A US 2121929 A US2121929 A US 2121929A US 156779 A US156779 A US 156779A US 15677937 A US15677937 A US 15677937A US 2121929 A US2121929 A US 2121929A
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US
United States
Prior art keywords
roll
convex
concave
stands
working rolls
Prior art date
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
US156779A
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English (en)
Inventor
Puppe Heinz
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Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US2121929A publication Critical patent/US2121929A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21B1/26—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 hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/30—Foil or other thin sheet-metal making or treating

Definitions

  • This invention relates to a rolling mill with roll stands arranged in series for the continuous hot rolling of strip iron or broad band iron, more particularly strip or band iron having a breadth greater than 600 millimetres.
  • the roll stands may be equipped, as multi-roll stands, with rolls of different diameters. This succession of stands may then be followed in a known manner by multi-roll stands with straight rolls, the working rolls of which are of smaller diameter than the other rolls.
  • Figure 1 shows the rolling mill diagrammatically in side elevation
  • Figure 2 shows a sec ion on the line 2-2 in as W view of the breadth of the band, so
  • ticular Figure 5 shows on the upper side and convex Figure 3 is a front view of any one of the alternate roll stands I, III or V;
  • Figure 4 is a front view of any one of the roll stands II or IV;
  • Figure 5 shows in cross section the shape of the roll opening in one group of stands, this roll opening being concave on the upper side and convex on theunder side;
  • Figure 6 is a similar view of the roll opening of the intervening stands which is convex on the upper side and concave on the under side;
  • Figure 7 is a view similar to Figure 5, but showing a narrower roll opening occurring at a later stage in the series of roll stands, and
  • Figure8 is a similar view of the finishing roll opening.
  • the individual roll stands I to V which are constructed as multiple roll stands, each with two inner working rolls i, 2 or I, 2 of relatively small diameter, and two outer supporting rolls 3, 4 or 3', 4' of larger diameter.
  • the rolls I and 2 are concave, and the rolls l' and 2 are convex.
  • the roll openings in the stands I, III and V are therefore convex as viewed from above and concave as viewed from below, whereas the roll openings of the stands II and IV are concave as viewed from above and convex as viewed from below.
  • Figures 5 to 8 show on a larger scale the shape of the roll opening at 4 successive stages.
  • workpiece Ga concave on .the under side, as shaped by a convex upper roll and a concave lower roll, like those of the stands II and IV.
  • Figure 6 hows the workpiece 8b with a convex upper surface and a concave under surface, as produced by a roll stand with a concave upper roll and a convex lower roll, as in the case of the roll stands I, III and V.
  • Figure 7 shows the workpiece 60 with a cross section similar to that of Figure 5, except that it has been reduced in thickness in its progress through the rolling mill.
  • the rolling operation proceeds as follows:
  • the work When the metal enters the first roll stand, which may be equipped for example with a concave upper roll and a convex lower roll, the work receives a cross section which is convex on the upper side and concave on the lower side. Since in the next roll stand there is a convex upper roll and a concave lower roll, the work receives a cross section with a concave upper side and a convex under side. In succeeding roll stands there is again a concave upper roll and a convex lower roll, so that the work receives a cross section with a convex upper side and a concave under side.
  • a rolling mill with roll stands arranged in series for the continuous hot rolling of strips and broad long bands of iron of a breadth greater than 600 millimetres comprising roll stands arranged one behind each other, bottom working rolls and top working rolls mounted in said roll stands, the arrangement being such that the bottom working rolls of successivepasses are alternately concave and convex, whereas the said top working rolls are alternately convex and concave.
  • a rolling mill with roll stands arranged in series for the continuous hot rolling of strips and broad long bands of iron of a breadth greater than 600 millimetres comprising roll stands arranged one behind each other, bottom working rolls and top working rolls mounted in said roll stands, the arrangement being such that the bottom working rolls of successive passes are alternately concave and convex, whereas the said top working rolls are alternately convex and concave, and the curvature of the concave side of a roll opening differing from the curvature of the convex side of the same roll opening.
  • a rolling mill with roll stands arranged series for the continuous hot rolling of strips and broad long bands of iron of a breadth greater than 600 millimetres comprising roll stands arranged one behind each other, bottom working rolls and top working rolls mounted in said roll stands, the arrangement being such that the bottom working rolls of successive passes are alternately concave and convex, whereas the said top working rolls are alternately convex and concave, and each roll stand including supporting rolls in addition to working rolls.
  • a rolling mill with roll stands arranged in series for the continuous hot rolling of strips and broad long bands of iron of a breadth greater than 600 millimetres comprising roll stands arranged one behind each other, bottom working rolls and top working rolls mounted in said roll stands, the arrangement being such that the bottom working rolls of successive passes are alternately concave and convex, whereas the said top working rolls are alternately convex and concave, the roll opening between the working rolls of at least one roll stand at the end of the series being straight, and the finishing working rolls being of smaller diameter than the preceding rolls and each roll stand including at least two supporting rolls in addition to the working rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US156779A 1936-03-05 1937-07-31 Rolling mill Expired - Lifetime US2121929A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEN39215D DE742894C (de) 1936-03-05 1936-03-05 Walzwerk mit hintereinander angeordneten Walzgeruesten
BE422394T 1937-06-30
FR823933T 1937-07-05
GB19499/37A GB479996A (en) 1936-03-05 1937-07-14 Improvements in or relating to rolling mills

Publications (1)

Publication Number Publication Date
US2121929A true US2121929A (en) 1938-06-28

Family

ID=25989196

Family Applications (1)

Application Number Title Priority Date Filing Date
US156779A Expired - Lifetime US2121929A (en) 1936-03-05 1937-07-31 Rolling mill

Country Status (5)

Country Link
US (1) US2121929A (enrdf_load_stackoverflow)
BE (1) BE422394A (enrdf_load_stackoverflow)
DE (1) DE742894C (enrdf_load_stackoverflow)
FR (1) FR823933A (enrdf_load_stackoverflow)
GB (1) GB479996A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780187A (en) * 1950-03-08 1957-02-05 Lehigh Valley Coal Sales Compa Ash removal apparatus
DE1301295B (de) * 1963-06-04 1969-08-21 United Eng Foundry Co Verfahren und Vorrichtung zum AEndern der Spannungsverteilung ueber die Bandbreite beim Walzen von Band unter Zug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780187A (en) * 1950-03-08 1957-02-05 Lehigh Valley Coal Sales Compa Ash removal apparatus
DE1301295B (de) * 1963-06-04 1969-08-21 United Eng Foundry Co Verfahren und Vorrichtung zum AEndern der Spannungsverteilung ueber die Bandbreite beim Walzen von Band unter Zug

Also Published As

Publication number Publication date
FR823933A (fr) 1938-01-28
DE742894C (de) 1943-12-14
BE422394A (enrdf_load_stackoverflow) 1937-07-31
GB479996A (en) 1938-02-15

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