EP0896841A2 - Laminoir à cylindres de travail et cylindres d'appui en plusieurs parties - Google Patents

Laminoir à cylindres de travail et cylindres d'appui en plusieurs parties Download PDF

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Publication number
EP0896841A2
EP0896841A2 EP98250268A EP98250268A EP0896841A2 EP 0896841 A2 EP0896841 A2 EP 0896841A2 EP 98250268 A EP98250268 A EP 98250268A EP 98250268 A EP98250268 A EP 98250268A EP 0896841 A2 EP0896841 A2 EP 0896841A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
rolls
base body
eccentricity
rolling mill
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.)
Withdrawn
Application number
EP98250268A
Other languages
German (de)
English (en)
Other versions
EP0896841A3 (fr
Inventor
Herbert Ing. Quambusch
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.)
SMS Siemag AG
Original Assignee
Mannesmann AG
SMS Demag AG
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 Mannesmann AG, SMS Demag AG filed Critical Mannesmann AG
Publication of EP0896841A2 publication Critical patent/EP0896841A2/fr
Publication of EP0896841A3 publication Critical patent/EP0896841A3/fr
Withdrawn legal-status Critical Current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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • 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
    • B21B27/03—Sleeved rolls
    • B21B27/05—Sleeved rolls with deflectable sleeves

Definitions

  • the invention relates to a rolling mill with work rolls and multi-part backup rolls, consisting of a basic body with several on it in its longitudinal direction Rolling bearings arranged side by side, the one with their outer rings Support the sleeve encompassing the rolling bearing, the outer surface of which Rolls of the backup roll forms, the base body about its longitudinal axis is rotatable and approximately corresponding to the width of the roller bearing cylindrical Sections is divided, the cylinder axes running parallel to each other adjacent sections are offset from each other.
  • a disadvantage of the known solution is that for the flexing movement of the outer Sleeve of the backup roller between the bearings of the backup roller and the work roll Stability of movement is not given at high rolling loads. Second is through the required play between the sleeve and the roller bearings of the backup roller Use as a lower backup roll in a hot rolling stand is difficult or impossible to be realized as an effective protection of the storage against water and dirt can hardly be realized permanently. In addition, the flexing movements lead between Sleeve and bearing due to the partial contact of the roller bearing outer rings clear signs of wear, which the adjustability of the rolling mill and so that negatively affect the quality of the rolled product. From the listed So far, reasons have not been a practical application of a generic type Back-up roller known.
  • the object of the present invention is to provide an eccentric support roller Influencing the profile in rolling mills to create the state of the art Disadvantages described does not have.
  • the sleeve with its inner surface on all sides on the outer surfaces of the outer rings the rolling bearing rests and thereby receives an eccentricity that results from the Eccentricity of the sections of the base body reduced by the influence of back bending the sleeve results.
  • the starting point of the invention is one Eccentric axis with several gradations, on which preferably seven or more Rolling bearings are attached.
  • These roller bearings are preferably in the form of spherical roller bearings, possibly also designed as a tapered roller bearing.
  • a cylindrical sleeve with its inner circumference bears on all sides on the outer surface of the outer rings of the rolling bearings. This can be done accomplish, for example, that the sleeve to a temperature of about 200 ° C is heated, which creates an excess that is sufficient to the Slide the sleeve onto the mounted roller bearing so that it cools down is mounted on all rolling bearings at the same time.
  • all cylindrical sections have the same diameter, so that not only simplifies the manufacture of the base body, it also allows the use of similar ones Rolling bearings, which in turn the manufacturing costs of a rolling mill according to the invention reduced.
  • the result is a back-up roller with an arcuate basic shape, which the side facing the work roll is concave depending on the rotation of the eccentric or convex.
  • the central section or sections is the largest Has eccentricity and the eccentricity of the adjacent sections stepwise decreases symmetrically to the sides of the backup roller.
  • the cylinder axes of the inner sections are preferably deflected in FIG a common plane slitting the base body, so that a Grinding device for regrinding the sleeve in a 90 ° to this plane staggered along the plane extending to the base body is attachable.
  • a Grinding device for regrinding the sleeve in a 90 ° to this plane staggered along the plane extending to the base body is attachable.
  • the sleeve wears below a certain nominal size, the sleeve becomes exchanged. By pulling off the bearings, for example after milling the Sleeve, this can be separated from the storage.
  • the present backup roller design enables a favorable adjustment of the Roll gap profile by turning the base body, without that at the state of Technology disadvantages occur.
  • the backup roller receives through that Pulling the sleeve onto the bearing a defined shape, which is not just under Rolling load results, as is the case with the prior art. Training the Base body and the cylindrical sections allows the use of similar Warehouse, which not only reduces manufacturing costs, but also that Spare parts stock simplified. Because the sleeve is defined on the outer rings the bearing is in contact, seals can also be provided on the face side, the one Penetration of water and dirt into the space between the sleeve and the base body prevent. As a result, the backup roller according to the invention can also be used as the lower one Use backup roll in hot rolling mills without the risk of scale and water damaged the bearings.
  • 1 is the base body of the support roller designated overall by S. referred to, which is divided into sections 2 to 6.
  • Each of these sections 2 through 6 is cylindrical, the cylinder axes 4a to 6a with respect to the axes 2a of the Base body 1 are laterally offset, namely step-like such that the Gradation of adjacent sections based on the center 7 of the base body 1 results symmetrically.
  • the cylinder axis 3a is aligned with the axis 2a of the base body 1. It is also possible to already have the cylinder axis 3a of the outer sections 3 to be offset eccentrically with respect to axis 2a. This creates in the base body 1 shows an eccentricity for setting the profile in a manner according to the invention necessary is.
  • the base body 1 of the support roller is over a Rack and pinion rotatable so that the position of the eccentricities changes can be. Rotation via a worm gear is also possible.
  • On each of the sections 3 to 6 is preferably a tapered or spherical roller bearing Rolling bearing 9 trained, the offset of the adjacent Cylinder axes is chosen only so large that the roller bearing 9 after thermal Expansion can be pushed over the emerging paragraph. After this all rolling bearings 9 are mounted on the base body, the sleeve 10 is heated and thus widened so that they are pushed over all rolling bearings and after it has grown cold. The side seals 11 will attached so that dirt and water penetrate into the bearing 9 is avoided.
  • the sleeve 10 thus fitted adapts to the course of the surface the roller bearing 9 and takes over part of the eccentricity of the base body 1, reduced by the bending influences of the sleeve from its section modulus.
  • an eccentrically adjustable back-up roll is created, the base body of which is is fixed during the rolling process, while the sleeve 10 together with the Outer rings of the rolling bearings 9 rotates.
  • a variable eccentricity that depends of the eccentricity specified on the base body 1 and depending on the optionally a different or similar eccentricity of the second backup roller extensive influence on the rolled profile makes possible.
  • the sleeve 10 is interchangeable, for example by the sleeve 10 is milled to a minimum diameter in order to heat it the sleeve 10 to avoid that the bearings 9 also expand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Rolling Contact Bearings (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP98250268A 1997-08-11 1998-07-23 Laminoir à cylindres de travail et cylindres d'appui en plusieurs parties Withdrawn EP0896841A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997135568 DE19735568C2 (de) 1997-08-11 1997-08-11 Walzwerk mit Arbeitswalzen und mehrteiligen Stützwalzen
DE19735568 1997-08-11

Publications (2)

Publication Number Publication Date
EP0896841A2 true EP0896841A2 (fr) 1999-02-17
EP0896841A3 EP0896841A3 (fr) 1999-08-18

Family

ID=7839181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98250268A Withdrawn EP0896841A3 (fr) 1997-08-11 1998-07-23 Laminoir à cylindres de travail et cylindres d'appui en plusieurs parties

Country Status (2)

Country Link
EP (1) EP0896841A3 (fr)
DE (1) DE19735568C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999041025A1 (fr) * 1998-02-17 1999-08-19 Sms Demag Ag Laminoir comprenant des cylindres de travail et des cylindres d'appui en plusieurs parties
US8789401B2 (en) 2005-07-07 2014-07-29 Sms Siemag Aktiengesellschaft Method for producing a support roll for a rolling mill
CN116026716A (zh) * 2021-10-26 2023-04-28 中国石油化工股份有限公司 一种套管磨损试验装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910158A (en) * 1928-03-09 1933-05-23 Timken Roller Bearing Co Rolling mill
US3731357A (en) * 1970-06-15 1973-05-08 Yamauchi Rubber Ind Co Ltd Apparatus for adjusting the altitude of the chord of an expanding roll
DE69308681T2 (de) * 1992-08-12 1997-08-07 Mitsubishi Heavy Ind Ltd Walzwerk
US5943895A (en) * 1997-04-24 1999-08-31 Sms Schloemann-Siemag Aktiengesellschaft Dynamic crown control back-up roll assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999041025A1 (fr) * 1998-02-17 1999-08-19 Sms Demag Ag Laminoir comprenant des cylindres de travail et des cylindres d'appui en plusieurs parties
US8789401B2 (en) 2005-07-07 2014-07-29 Sms Siemag Aktiengesellschaft Method for producing a support roll for a rolling mill
CN116026716A (zh) * 2021-10-26 2023-04-28 中国石油化工股份有限公司 一种套管磨损试验装置

Also Published As

Publication number Publication date
DE19735568A1 (de) 1999-02-25
DE19735568C2 (de) 2000-07-20
EP0896841A3 (fr) 1999-08-18

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