US1857670A - Rolling metal strip - Google Patents

Rolling metal strip Download PDF

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Publication number
US1857670A
US1857670A US198915A US19891527A US1857670A US 1857670 A US1857670 A US 1857670A US 198915 A US198915 A US 198915A US 19891527 A US19891527 A US 19891527A US 1857670 A US1857670 A US 1857670A
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United States
Prior art keywords
metal
rolling
strip
metal strip
mill
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Expired - Lifetime
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US198915A
Inventor
Abram P Steckel
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COLD METAL PROCESS CO
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COLD METAL PROCESS CO
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Application filed by COLD METAL PROCESS CO filed Critical COLD METAL PROCESS CO
Priority to US198915A priority Critical patent/US1857670A/en
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Publication of US1857670A publication Critical patent/US1857670A/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
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
    • 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
    • B21B1/30—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 non-continuous process
    • B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling

Definitions

  • This invention relates to the rolling of metal strip and particularly to the'hot rolling thereof.
  • Theterm strip is herein employed to define an extended length of metal in'sheet form regardless of its width.
  • Metal strip is now being rolled in continuous mills, but these mills are so large and occupy so much space that a very heavy capital outlay is required.
  • the operating cost of the continuous mill is high because of the large amount of power required.
  • An older method of making strip material is to employ a single reversing stand and to run the metal out on a roll table to either side of the stand. This method is undesirable because as the metal is reduced to the thinner gauges it rapidly loses heat.
  • I provide for subjecting a piece of heated metal to a plurality of roll passes and coiling the metal between passes. This reduces the radiating surface to a minimum and permits of rolling for long periods of time without reheating; It also makes it possible to materially reduce the cost of the installation since the long run-out tables are unnecessary. It will be understood that roll tables may be employed for efiecting some of the preliminary reductions, but these will not need to be of anything like the length which' would be required for the final product. I may place the coilers .in heat conserving chambers, one' on either side of the mill. These chambers may be arranged so as to be moved sidewise and thus permit of rolling a slab in the ordinary way down to such thicknose that it can be coiled.
  • coilers lie in the fact that they are efiective for scaling the metal. I arrange the coilers so that the metal is curled first in one direction and then in the other, so that the scale is cleaned from both sides.
  • FIG. 1 The accompanying figure of drawing illustrates my invention diagrammatically. It shows a reversing mill comprising a pair of working rolls. 2a, each provided with backing up rolls 3a. Either the working rolls or the backing up rolls may be driven, as desired.
  • the mill is provided with the usual screw- 1927. Serial No. 198,915.,
  • Coilers 4a are provided on either side of the mill, these being arranged to reel or to pay out material depending on which way the mill is running. Each coiler is motor driven and may be operated at such a rate as to maintain thedelivered strip under tension.
  • a heated slab will be rolled in the ordinary way until it is thin enough to coil.
  • the coiled material is supplied to the mill and fed from one reel through the mill and thence to the other reel. 0n the next succeefing pass the operation will be reversed, the paid out material being fed back through the mill to the first coiler.
  • the heat loss will be very slight as compared with ordinary rolling'practice due to the very small radiating surface presented by the coil and also due to the conservation of heat by the chamber 5a.
  • the method of rolling strip metal which includes coiling a strip of hot metal in a heating chamber, uncoiling the same and feeding it from the. chamber through a roll pass and to another heated chamber, coiling the strip therein, periodically reversing the direction of rolling so that the material is fed back and forth from one coil to another,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

May 10, 1932. A. P. STECKEL ROLLING METAL STRIP Filed June 15. 1927 INVENTOR m... 9. mm m.
Patented Ma 10', 1932 UNITED STATES PATENT OFFICE ABBAM P. STECKEL, OF YOUNGSTOWN, OHIO, ASSIGNOR TO THE COLD METAL PROCESS COMPANY, OF- YOUNGSTOWN, OHIO, A CORPORATION OF OHIO nonnnve METAL srmr Application filed June 15,
This invention relates to the rolling of metal strip and particularly to the'hot rolling thereof. Theterm strip is herein employed to define an extended length of metal in'sheet form regardless of its width.
Metal strip is now being rolled in continuous mills, but these mills are so large and occupy so much space that a very heavy capital outlay is required. The operating cost of the continuous mill is high because of the large amount of power required.
An older method of making strip material is to employ a single reversing stand and to run the metal out on a roll table to either side of the stand. This method is undesirable because as the metal is reduced to the thinner gauges it rapidly loses heat.
I provide for subjecting a piece of heated metal to a plurality of roll passes and coiling the metal between passes. This reduces the radiating surface to a minimum and permits of rolling for long periods of time without reheating; It also makes it possible to materially reduce the cost of the installation since the long run-out tables are unnecessary. It will be understood that roll tables may be employed for efiecting some of the preliminary reductions, but these will not need to be of anything like the length which' would be required for the final product. I may place the coilers .in heat conserving chambers, one' on either side of the mill. These chambers may be arranged so as to be moved sidewise and thus permit of rolling a slab in the ordinary way down to such thicknose that it can be coiled.
Another advantage of the coilers lies in the fact that they are efiective for scaling the metal. I arrange the coilers so that the metal is curled first in one direction and then in the other, so that the scale is cleaned from both sides.
The accompanying figure of drawing illustrates my invention diagrammatically. It shows a reversing mill comprising a pair of working rolls. 2a, each provided with backing up rolls 3a. Either the working rolls or the backing up rolls may be driven, as desired. The mill is provided with the usual screw- 1927. Serial No. 198,915.,
downs so that successive reductions maybe made.
Coilers 4a are provided on either side of the mill, these being arranged to reel or to pay out material depending on which way the mill is running. Each coiler is motor driven and may be operated at such a rate as to maintain thedelivered strip under tension.
In operation a heated slab will be rolled in the ordinary way until it is thin enough to coil. The coiled material is supplied to the mill and fed from one reel through the mill and thence to the other reel. 0n the next succeefing pass the operation will be reversed, the paid out material being fed back through the mill to the first coiler. The heat loss will be very slight as compared with ordinary rolling'practice due to the very small radiating surface presented by the coil and also due to the conservation of heat by the chamber 5a. a
It will be noted that the material is flexed first in one direction and then in the other. slghis efiects removal of the scale from the rip. While I have illustrated a preferred embodiment of my invention, it will be understood that the invention is notthus limited, as it may be otherwise practiced or embodied within the scope of the following claims I claim v 1. The method of rolling metal strip whichincludes coiling a strip of hot metal in a heating chamber, uncoiling the same and feeding 1t from the chamber through a roll. pass and to another heated chamber, coiling the strip therein in a direction opposite to heating chamber, the same andv W feeding it from the chamber through a roll pass and to another heated chamber, coiling the strip therein in a direction opposite to that in which it was first coiled, periodically reversing the direction of rolling, and maintaining the metal under tension between the rolling thereof and the coiling thereof.
3. The method of rolling strip metal which includes coiling a strip of hot metal in a heating chamber, uncoiling the same and feeding it from the. chamber through a roll pass and to another heated chamber, coiling the strip therein, periodically reversing the direction of rolling so that the material is fed back and forth from one coil to another,
and subjecting the material to bending in both directions so as to effect removal of scale.
In testimony whereof I havehereunto set my hand.
ABRAM P. STECKEL.
US198915A 1927-06-15 1927-06-15 Rolling metal strip Expired - Lifetime US1857670A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706422A (en) * 1947-05-02 1955-04-19 Cold Metal Products Company Metal rolling
US3201287A (en) * 1959-07-07 1965-08-17 Crucible Steel Co America Heat treating method
US5499523A (en) * 1993-10-19 1996-03-19 Danieli United, Inc. Method for producing metal strips having different thicknesses from a single slab

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706422A (en) * 1947-05-02 1955-04-19 Cold Metal Products Company Metal rolling
US3201287A (en) * 1959-07-07 1965-08-17 Crucible Steel Co America Heat treating method
US5499523A (en) * 1993-10-19 1996-03-19 Danieli United, Inc. Method for producing metal strips having different thicknesses from a single slab

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