WO2014052218A1 - Procédé d'optimisation d'un trajet de guide de tête de pose - Google Patents

Procédé d'optimisation d'un trajet de guide de tête de pose Download PDF

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Publication number
WO2014052218A1
WO2014052218A1 PCT/US2013/061117 US2013061117W WO2014052218A1 WO 2014052218 A1 WO2014052218 A1 WO 2014052218A1 US 2013061117 W US2013061117 W US 2013061117W WO 2014052218 A1 WO2014052218 A1 WO 2014052218A1
Authority
WO
WIPO (PCT)
Prior art keywords
products
subdivisions
diameters
range
laying head
Prior art date
Application number
PCT/US2013/061117
Other languages
English (en)
Inventor
Keith Fiorucci
Christopher Lashua
Original Assignee
Siemens Industry, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Industry, Inc. filed Critical Siemens Industry, Inc.
Publication of WO2014052218A1 publication Critical patent/WO2014052218A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B21C47/10—Winding-up or coiling by means of a moving guide
    • B21C47/14—Winding-up or coiling by means of a moving guide by means of a rotating guide, e.g. laying the material around a stationary reel or drum
    • B21C47/143—Winding-up or coiling by means of a moving guide by means of a rotating guide, e.g. laying the material around a stationary reel or drum the guide being a tube

Definitions

  • aspects of the present invention relate to the processing of a range of products having different diameters in a rolling mill laying head in which the products are directed along a path defined by a curved guide, and more particularly, to a method for optimizing the size relationship between the curved guide and the products being processed, resulting in improved ring pattern and increased life of the curved guide.
  • billets are heated in a furnace 10.
  • the heated billets exit the furnace 10 and are rolled through a roughing mill 12, an intermediate mill 14, and a finishing mill 16, which may be followed in some cases by a reducing/sizing mill (not shown), resulting in finished products.
  • the finished products are then directed to a laying head 18 where they are formed into rings 20.
  • the rings 20 are deposited on a conveyor 22 for transport to a reforming station 24 where they are gathered into coils. While in transit on the conveyor 22, the rings 20 are subjected to controlled cooling designed to achieve selected metallurgical properties.
  • the laying head 18 includes a hollow quill 26 containing a curved guide 28.
  • a bevel gear set 27 powered by a motor 29 serves to rotatably drive the quill and curved guide about an axis "A".
  • the size of bores or channels of the equipment preceeding the laying head can be changed depending on the desired size of the rolled product.
  • different sizes bores or channels are used.
  • the same sized guide in the laying head is used, resulting in poor ring pattern and a short guide life, particularly when processing the smaller product sizes.
  • aspects of the present invention relate to optimization of the size relationship between the curved guide of the laying head and the size of the products being processed. Unlike conventional solutions, aspects of the present invention involve subdividing the range of products being processed into subdivisions, and assigning curved guides specifically sized to accommodate the product sizes within such subdivisions, thus making it possible to achieve improved ring pattern and overall increased life of the curved guides.
  • Fig. 1 illustrates a conventional rolling mill layout.
  • Fig. 2 illustrates a conventional mill laying head and associated mill components
  • Figs. 3A-3B illustrate a laying head system, in accordance with exemplary embodiments of the present invention.
  • a laying head system 30 coils rolled elongated material M, such as for example hot rolled steel.
  • Elongated material M that is advancing at speed S which may be as high as or greater than approximately 500 feet/second (150 m/sec)
  • the laying head system 30 comprises a rotatable quill 50, a curved guide 60 and a guide support 70.
  • the curved guide 60 will comprise a tubular pipe, hereinafter referred to as a "laying pipe.”
  • the quill 50 can have a generally horn shape that is adapted to rotate about an axis.
  • the guide 60 has a generally helical axial profile of increasing radius, with a first end 62 that that is aligned with the rotational axis of quill 50 and receives elongated material M.
  • the guide 60 has a second end that is spaced radially outwardly from and generally tangential to the quill 50 rotational axis and thus discharges the elongated material generally tangentially to the periphery of the rotating quill.
  • the guide 60 is coupled to a pipe support 70 that is in turn coupled coaxially to the quill 50, so that all three components rotate synchronously about the quill rotational axis.
  • the quill 50 rotational speed can be selected based upon, among other factors, the size of the elongated material M and its properties, advancement speed S, desired coil diameter and number of tons of elongated material that can be processed by the laying head pipe without undue risk of excessive wear.
  • elongated material M As illustrated, as elongated material M is discharged from the second end 64, it is directed into a ring guide 80 having guide rim segments 82 into which are formed a guide trough channel 84 having a helical pitch profile, such as that described in commonly owned U.S. Patent No. 6,769,641. As the elongated material M is advanced through the ring guide 80 it is continued to be conformed into a continuous loop helix.
  • the segmented ring guide enables relatively easy reconfiguration of the ring guide helical diameter to accommodate different elongated materials by changing the rim segments 82 without disassembling and replacing the entire ring guide 80.
  • the elongated material M is configured into a continuous looped coil as it passes through the ring guide 80 helical trough channel 84.
  • Ring guide 80 is coupled to the pipe support 70 and rotates coaxially with the quill 50.
  • the helical trough 84 advancement rotational speed is harmonized with the elongated material M advancement speed S, so there is little relative linear movement and less frictional wear of the trough 84 surfaces that contact the material being processed.
  • Stationary end ring 90 has an inner diameter that is coaxial with the quill 50 rotational axis and circumscribes the laying pipe 60 second end 62 as well as the ring guide 80.
  • the end ring 90 counteracts centrifugal force imparted on the elongated material M as it is discharged from the laying head pipe 60 second end 62 and advances along the ring guide 80 helical trough channel 84 by radially restraining the material within the end ring inner diameter guide surface.
  • High relative speed between the advancing elongated material M and the stationary end ring 90 causes rubbing wear on the end ring inner diameter guide surface.
  • elongated material M that is discharged from the laying head system 30 falls by gravity in continuous loops onto roller conveyor 40, aided by the downwardly angled quill rotational axis at the system discharge end 34.
  • Tripper mechanism 150 pivots about an axis abutting the distal axial side of the end ring 90 guide surface. That pivotal axis is generally tangential to the end ring 90 inner diameter guide surface about a pivotal range of motion ⁇ .
  • coiled material M coiling characteristics and placement on the conveyor 40 can be controlled by varying the pivotal angle ⁇ .
  • the curved guide of the laying head typically comprises a laying pipe fabricated from a schedule 160 tube with a bore diameter of about 1.5" (38.1 mm).
  • Table II lists the ratios of the conventional laying pipe bore diameter (D B ) to product diameters (D P ) for the above-identified subdivisions.
  • each pipe having a bore diameter sized to accommodate the product sizes within a selected one of the range subdivisions.
  • the selected laying pipe bore sizes may for example be 20.0, 26.0 and 34.0 assigned respectively to the small, medium and large subdivisions of the range of product sizes being rolled.
  • Table III lists the ratios of D B /D P when employing multiple differently sized laying pipes in accordance with the present invention.
  • the present invention departs from the conventional "one size fits all" approach for the curved guides of laying heads by subdividing the range of product sizes being produced by the mill into narrower subdivisions, and by assigning interchangeable guides internally dimensioned to more closely and precisely enclose the products being directed therethrough.
  • the curved guides may comprise tubular laying pipes, with the ratio of their bore diameters to the diameters of the products being processed being not greater than 5.0

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

L'invention concerne un procédé de traitement d'une gamme de produits présentant différents diamètres dans une tête de pose de laminoir (30) dans lequel les produits sont dirigés le long d'un trajet défini par un guide incurvé (60) comprenant : la subdivision de la gamme de produits en de multiples subdivisions ; la fourniture de multiples guides incurvés interchangeables, l'intérieur de guide incurvé étant dimensionné de manière à accueillir les diamètres des produits dans une subdivision respective des subdivisions ; et lors du traitement des produits à l'intérieur de l'une quelconque des subdivisions, l'équipement de la tête de pose du guide incurvé attribué à cette subdivision et l'actionnement dudit guide incurvé.
PCT/US2013/061117 2012-09-27 2013-09-23 Procédé d'optimisation d'un trajet de guide de tête de pose WO2014052218A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261706274P 2012-09-27 2012-09-27
US61/706,274 2012-09-27

Publications (1)

Publication Number Publication Date
WO2014052218A1 true WO2014052218A1 (fr) 2014-04-03

Family

ID=49326851

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/061117 WO2014052218A1 (fr) 2012-09-27 2013-09-23 Procédé d'optimisation d'un trajet de guide de tête de pose

Country Status (1)

Country Link
WO (1) WO2014052218A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004002643A1 (fr) * 2002-07-01 2004-01-08 Danieli & C. Officine Meccaniche S.P.A. Tuyau de formage
US6769641B2 (en) 2001-12-14 2004-08-03 Morgan Construction Company Segmented ring guide for rolling mill laying head
WO2006111382A2 (fr) * 2005-04-22 2006-10-26 S.I.M.A.C. S.P.A. Tete de bobinoir destinee a un laminoir a chaud
US20120055218A1 (en) 2010-09-07 2012-03-08 Morgan Construction Company Regenerative laying pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6769641B2 (en) 2001-12-14 2004-08-03 Morgan Construction Company Segmented ring guide for rolling mill laying head
WO2004002643A1 (fr) * 2002-07-01 2004-01-08 Danieli & C. Officine Meccaniche S.P.A. Tuyau de formage
WO2006111382A2 (fr) * 2005-04-22 2006-10-26 S.I.M.A.C. S.P.A. Tete de bobinoir destinee a un laminoir a chaud
US20120055218A1 (en) 2010-09-07 2012-03-08 Morgan Construction Company Regenerative laying pipe

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