EP2392416B1 - Cylindre d'appui et cage de laminoir en étant équipée - Google Patents

Cylindre d'appui et cage de laminoir en étant équipée Download PDF

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Publication number
EP2392416B1
EP2392416B1 EP20110162611 EP11162611A EP2392416B1 EP 2392416 B1 EP2392416 B1 EP 2392416B1 EP 20110162611 EP20110162611 EP 20110162611 EP 11162611 A EP11162611 A EP 11162611A EP 2392416 B1 EP2392416 B1 EP 2392416B1
Authority
EP
European Patent Office
Prior art keywords
roll
region
center line
backup
outer contour
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.)
Not-in-force
Application number
EP20110162611
Other languages
German (de)
English (en)
Other versions
EP2392416A1 (fr
Inventor
Werner Stahl
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.)
Achenbach Buschhetten GmbH and Co KG
Original Assignee
Achenbach Buschhetten GmbH and Co KG
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Filing date
Publication date
Application filed by Achenbach Buschhetten GmbH and Co KG filed Critical Achenbach Buschhetten GmbH and Co KG
Publication of EP2392416A1 publication Critical patent/EP2392416A1/fr
Application granted granted Critical
Publication of EP2392416B1 publication Critical patent/EP2392416B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21B27/021—Rolls for sheets or strips
    • 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
    • B21B2267/00—Roll parameters
    • B21B2267/18—Roll crown; roll profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/18—Roll crown; roll profile
    • B21B2267/20—Ground camber or profile

Definitions

  • the invention relates to a support roller according to the preamble of claim 1 and a rolling stand according to claim 6.
  • Generic back-up rollers are used, in particular, in rolling mills for rolling metallic flat goods, in particular hot or cold strip, fine strip or film.
  • a roll stand which usually has two work rolls and at least two support rollers supporting the work rolls, these products are rolled to the desired strip thickness. Due to the high forces occurring perpendicular to the roll axes there is a deflection of the roll axes, which leads to lack of dimensional stability of the product and undesirable band properties.
  • the back-up roll according to the invention intended for use in a rolling mill comprises, in a first manner known per se, two bearing journals and a bale extending therebetween. With the journals, the support roller is rotatable in a frame and optionally driven driven.
  • the bale which has a substantially cylindrical basic shape, is provided with a non-cylindrical outer contour, which is symmetrical to the center line of the bale and forms a so-called crown as a whole.
  • the bale in the region between the center line (ML) and the edge region in longitudinal section in each case two parabolically shaped outer contour regions whose Curvature is in opposite directions, the apex of the curvature of the adjoining the edge region outer contour region to the roll axis and the vertex of the curvature of the adjoining to the center line of the bale outer contour region facing away from the roller.
  • Such a support roller is simple and inexpensive, for example by grinding, produced.
  • the basic roller characteristic is not changed even in a roll grinding, as is the case for example with VC rolls.
  • the design according to the invention also counteracts quarter buckles and compensates profile errors by an improved rolling force distribution, in particular in the case of narrow strips to be rolled.
  • the two parabolic regions continuously merge into one another.
  • a particularly preferred embodiment results when the transition between the two parabolic regions lies midway between the center line and the edge region. As a result, a particularly uniform and homogeneous contour is obtained.
  • E is the functional height or the so-called Encore, that is the maximum addition to the nominal radius of the roller in the area of the center line (maximum of crowning). This means that the radius of the roller parabolic decreases from the center line to the center between the center line and edge region after the above function.
  • the Encore or the maximum addition is determined in advance for each application, for example by simulation of the rolling process by a FEM calculation.
  • the invention further relates to a rolling stand for hot and / or cold rolling of metallic strip, strip and / or film, which can be operated in the one-way or Reversier rehearsal.
  • this rolling mill has at least one work roll and at least one support roll as described above. However, preferably at least two work rolls and at least two backup rolls according to the invention are provided, each work roll being supported by a support roll.
  • the invention relates to a rolling mill with at least two rolling mills arranged one behind the other as described above.
  • the in the Fig. 1 shown backup roller 1 has two bearing journals 2 and 3, between which the actual roller body 4 extends.
  • the roller body 4 has on both sides of the bearing pins 2 and 3 adjoining edge regions 5 and 6, which do not come into contact with the rolling stock during rolling of the rolling stock.
  • Between the edge regions 5 and 6 extends the bale W, which has a substantially "cylindrical" outer contour.
  • Essentially cylindrical means that of the ideal shape of a cylinder deviating outer contour, although according to the invention is not straight cylindrical, the deviations, the so-called crowning or radial elevation, but is numerically low compared to the roll length.
  • a typical backup roll has a length of 1800 mm, while the maximum radial elevation is in the range of a few ⁇ m to a few 1/100 mm.
  • the back-up roll after the Fig. 1 is symmetrical to the centerline ML constructed and has a nominal diameter Dnenn, which corresponds to the ideal cylindrical contour of a roller.
  • the roller 1 has a non-symmetrical outer contour in the form of a crown, which is also arranged symmetrically to the center line ML and forms a crown, which is in lateral view or in longitudinal section through the support roller highest height on the center line ML and the functional height or the "Encore "E represents.
  • This function height is specified as a function of the material to be rolled and the rolling parameters such as stitch loss or the like.
  • the radial elevation drops in each case and reaches zero at the ball edges.
  • the two regions 7 and 8 are curved in opposite directions.
  • the region 7 has a curvature whose vertex points away from the roll axis, while the curvature of the region 8 is formed so that its vertex points toward the roll axis.

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (8)

  1. Cylindre de soutien destiné à un usage dans un laminoir, comportant deux tourillons et un corps s'étendant entre eux et présentant un contour extérieur non cylindrique symétrique à la ligne médiane du corps,
    caractérisé en ce que
    le corps (W) présente dans la zone comprise entre la ligne médiane (ML) et la zone de bordure (5, 6), en coupe longitudinale, respectivement deux zones de contour extérieur (7, 8) de forme parabolique dont la courbure est inverse, le sommet de la courbure de la zone de contour extérieur (8) se raccordant à la zone de bordure (5) étant tourné vers l'axe du cylindre et le sommet de la courbure de la zone de contour extérieur (7) se raccordant à la ligne médiane (ML) du corps étant détourné du cylindre.
  2. Cylindre de soutien selon la revendication 1,
    caractérisé en ce que
    les deux zones paraboliques (7, 8) transitent en permanence l'une dans l'autre.
  3. Cylindre de soutien selon la revendication 2,
    caractérisé en ce que
    la transition entre les deux zones paraboliques (7, 8) se situe au centre entre la ligne médiane (ML) et la zone de bordure respective (5, 6).
  4. Cylindre de soutien selon une des revendications 1 à 3,
    caractérisé en ce que
    la diminution radiale (y) de la première zone parabolique (7) s'étendant depuis le centre du cylindre (ML) en direction de la zone de bordure (5, 6) se calcule comme suit : y x = - 2 * E / W / 2 2 * x 2 ,
    Figure imgb0009
    sachant que
    y diminution radiale
    E hauteur fonctionnelle
    W longueur de corps
    X 0 ≤ x ≤ W/4
  5. Cylindre de soutien selon une des revendications 1 à 4,
    caractérisé en ce que
    l'augmentation radiale (y) de la seconde zone parabolique (7) s'étendant depuis la zone de bordure (5, 6) en direction du centre du cylindre (ML) se calcule comme suit : y x = 2 * E / W / 2 2 * x 2 ,
    Figure imgb0010
    sachant que
    y augmentation radiale
    E hauteur fonctionnelle
    W longueur de corps
    X 0 ≤ x ≤ W/4
  6. Cage de laminoir pour le laminage à chaud et/ou à froid de bande métallique, de bande fine et/ou de film en mode aller ou aller-retour, comportant au moins un cylindre opérationnel et au moins un cylindre d'appui selon une des revendications précédentes.
  7. Cage de laminoir selon la revendication 6,
    caractérisée en ce
    qu'au moins deux cylindres opérationnels et au moins deux cylindres d'appui sont prévus.
  8. Cage de laminoir comportant au moins deux cages de cylindres selon une des revendications 6 et 7.
EP20110162611 2010-06-01 2011-04-15 Cylindre d'appui et cage de laminoir en étant équipée Not-in-force EP2392416B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010029598A DE102010029598A1 (de) 2010-06-01 2010-06-01 Stützwalze und damit ausgerüstetes Walzgerüst

Publications (2)

Publication Number Publication Date
EP2392416A1 EP2392416A1 (fr) 2011-12-07
EP2392416B1 true EP2392416B1 (fr) 2012-07-25

Family

ID=44316261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110162611 Not-in-force EP2392416B1 (fr) 2010-06-01 2011-04-15 Cylindre d'appui et cage de laminoir en étant équipée

Country Status (2)

Country Link
EP (1) EP2392416B1 (fr)
DE (1) DE102010029598A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794307B (zh) * 2012-07-16 2014-10-15 燕山大学 一种宽厚板四辊轧机的支承辊
KR101767825B1 (ko) * 2016-04-11 2017-08-14 주식회사 포스코 압연롤 및 이를 포함하는 압연 시스템
CN111546137A (zh) * 2020-05-08 2020-08-18 山西太钢不锈钢股份有限公司 一种磨削平整辊凸度组合辊型的方法
CN113399464B (zh) * 2021-06-15 2023-05-09 山西太钢不锈钢股份有限公司 一种轧辊及其轧机和应用
CN113857265B (zh) * 2021-09-13 2022-08-09 北京科技大学 基于多目标协同控制的热轧极薄板带工作辊辊形设计方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5926365B2 (ja) 1979-05-24 1984-06-27 住友金属工業株式会社 可変クラウン・ロ−ルを用いた圧延機
SU1014604A1 (ru) * 1980-04-23 1983-04-30 Производственное Объединение "Ново-Краматорский Машиностроительный Завод" Прокатный валок клети широкополосного стана
SU1310050A1 (ru) * 1985-05-12 1987-05-15 Запорожский индустриальный институт Валковый узел
SI2026916T1 (sl) * 2006-06-14 2012-11-30 Siemens Vai Metals Tech Gmbh Valjalno ogrodje za izdelavo valjanega traka ali pločevine

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EP2392416A1 (fr) 2011-12-07
DE102010029598A1 (de) 2011-12-01

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