EP0809546A1 - Montant de laminoirs sous forme de bati ferme - Google Patents

Montant de laminoirs sous forme de bati ferme

Info

Publication number
EP0809546A1
EP0809546A1 EP95919320A EP95919320A EP0809546A1 EP 0809546 A1 EP0809546 A1 EP 0809546A1 EP 95919320 A EP95919320 A EP 95919320A EP 95919320 A EP95919320 A EP 95919320A EP 0809546 A1 EP0809546 A1 EP 0809546A1
Authority
EP
European Patent Office
Prior art keywords
stand
roll
closed frame
frame construction
outer sides
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.)
Granted
Application number
EP95919320A
Other languages
German (de)
English (en)
Other versions
EP0809546B1 (fr
Inventor
Uwe Quitmann
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 filed Critical Mannesmann AG
Publication of EP0809546A1 publication Critical patent/EP0809546A1/fr
Application granted granted Critical
Publication of EP0809546B1 publication Critical patent/EP0809546B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks

Definitions

  • the invention relates to a roll stand in a closed frame construction, in particular for heavy roll stands for rolling sheets and strips, consisting of two stand spars delimiting the stand window for receiving and guiding the roll chocks with mutually parallel inner surfaces and upper and lower crossheads connecting the stand spars.
  • Rolling mills of conventional design basically consist of two stands in which the rolls, which run in bearings supported by chocks, are arranged.
  • the stands are connected to one another at the top and bottom by cross-connecting parts; Cross-connection parts and stands form the rolling stand.
  • the stands as load-bearing structural parts of the rolling stand, absorb all the forces that occur during the rolling process. Therefore, the stands must have a high strength with little change in shape and at the same time allow the favorable arrangement of all elements of the scaffold.
  • one-piece versions of the stand in closed frame construction are preferred;
  • the object of the present invention is, based on the problems described, to design a roll stand in a closed frame construction in such a way that - while avoiding stress concentrations in the stand - the constriction of the stand window between the stand spars resulting from the rolling forces is minimized to an acceptable level.
  • each uprights have concave contours in the longitudinal direction, so that the cross-sectional areas of the uprights, starting from the crossheads, continuously decrease to the central region of the uprights.
  • the reduction can be described by a circular arc-shaped contour of the outside of each upright which runs in the longitudinal direction.
  • the center of the radius of the circular arc describing the contour is in the center area outside the upright
  • each uprights have parabolic contours in the longitudinal direction or, for example, never correspond to the bending of a beam on two supports.
  • the constriction of the stands in the area of the center of the stand can be reduced to zero, so that no expensive post-processing of the stands is necessary. This results in time and cost savings, also due to the higher availability of the rolling stand.
  • the chocks can be guided in the column window within very narrow tolerances, resulting in a significantly smaller dimensional deviation of the rolling stock due to better guidance of the chocks and a smoother bearing run.
  • the axial load on the roller bearings is reduced due to the less jamming of the rollers.
  • the measures found are extremely simple and also involve material savings on the stand itself.
  • Fig. 1 in a roughly simplified three-dimensional representation of a roller stand in a closed frame design according to the prior art
  • Fig. 2 shows schematically the expected constriction and bending of a
  • Stand window under rolling load 3 shows a roll stand according to the invention
  • Fig. 5 in a bar graph, the maximum comparison voltages and the vertical expansion of the stator according to the prior art and the invention in comparison and
  • Fig. 6 in three-dimensional representation of a diagram, the constriction of a roll stand according to the invention with rolling forces between 0 and 100% in relation to the height of the roll stand.
  • the roller stand is designated 1 in total. It consists of the two uprights 2 and 3, which are connected to each other via the upper 4 and lower crosshead 5. In the interior of the closed frame created by this stand design, the stand window numbered 6, the one formed on the stand spars 2 and 3, remains
  • Inner surfaces 7 are flat and are formed in parallel planes with respect to the respective opposite upright 2 and 3.
  • the upper crosshead 4 of the roll stand 1 has a bore for the pressure nut, which is irrelevant in connection with the present invention.
  • the uprights 2 and 3 can be seen to have cross sections which have the same dimensions between the upper crosshead and lower crosshead.
  • FIG. 2 schematically shows the deformation of the stand which occurs when the rolling forces Y and Y bend apart the upper and lower crossheads 4, 5 of the roll stand 1 in the vertical direction. In this case, they bend
  • Stand spars 2 and 3 as shown by the dashed line 8, to the inside and reduce the clear width of the stand window.
  • the extent of this constructive retreat of the stator window 6 depends on the size of the effective forces Y and Y ⁇ the dimensions L1 and L2 of the stator crossheads 4 and 5 and stator bars 2 and 3 and their moments of resistance J-
  • the outer sides 10 of the uprights are provided with a contour which can be described by a circular arc with the radius R, the center of the circle with the radius R being on an imaginary horizontal line running through the center 11 of the roll stand 1 outside the upright.
  • the radius R is selected in the exemplary embodiment such that the extent of the backward deflection of the two upright bars 2 and 3 is approximately 30% of the bar not constricted in accordance with FIG. 1.
  • the calculation is based on a roll stand with a total height of 14,900 mm and a stator bar thickness of 960 mm.
  • the height of the lower and upper crosshead was assumed to be 2300 mm.
  • the dimension of the constructive retraction of the outside of each stand spar was assumed to be 250 mm for variant 1 and 295 mm for variant 2, both based on the stand spar of a generic roller stand according to FIG. 1 with an assumed spar thickness of 960 mm.
  • the upright struts can be expected to have a horizontal constriction in the center of the scaffold of almost 2 mm.
  • Both variants according to the invention show a significantly reduced constriction over the entire height of the stand, whereby in the case of variant 2, that is to say with a degree of retraction of 295 mm, the constriction in the region of the stand center is reduced to zero even with a 100% rolling load.
  • FIG. 6 the horizontal constriction in a rolling stand according to the invention is shown in a three-dimensional diagram and as a function of the percentage rolling force. It can also be seen here that - even at 100% rolling force - there is a significantly decreasing, towards zero reduction in the constriction in the center region of the stand, so that a roll stand designed according to the invention solves the task in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Rolling Contact Bearings (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

L'invention concerne un montant de laminoir sous forme de bâti fermé, en particulier pour cages de laminoir lourdes destinées au laminage de tôles et de bandes. Le montant de laminoir présenté comporte deux membres verticaux qui délimitent la fenêtre de montant servant au logement et au guidage des pièces incorporées, dont les surfaces intérieures sont parallèles l'une à l'autre, et une traverse supérieure et une traverse inférieure qui relient lesdits membres verticaux. L'invention se caractérise en ce que, en partant des traverses (4, 5), les côtés extérieurs (10) de chaque membre vertical (2, 3), côtés extérieurs qui sont opposés à la fenêtre de montant (6), descendent en direction de cette dernière (6) pour réduire la surface de la section transversale des membres verticaux (2, 3). La plus petite section transversale d'un membre vertical se trouve dans la zone centrale (11) comprise entre la traverse supérieure et la traverse inférieure (4, 5).
EP95919320A 1995-02-16 1995-05-18 Montant de laminoirs sous forme de bati ferme Expired - Lifetime EP0809546B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19506873 1995-02-16
DE19506873A DE19506873C1 (de) 1995-02-16 1995-02-16 Walzenständer in geschlossener Rahmenbauweise
PCT/DE1995/000676 WO1996025250A1 (fr) 1995-02-16 1995-05-18 Montant de laminoirs sous forme de bati ferme

Publications (2)

Publication Number Publication Date
EP0809546A1 true EP0809546A1 (fr) 1997-12-03
EP0809546B1 EP0809546B1 (fr) 1999-03-31

Family

ID=7755199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95919320A Expired - Lifetime EP0809546B1 (fr) 1995-02-16 1995-05-18 Montant de laminoirs sous forme de bati ferme

Country Status (11)

Country Link
US (1) US5839314A (fr)
EP (1) EP0809546B1 (fr)
JP (1) JP3841850B2 (fr)
KR (1) KR100352221B1 (fr)
AU (1) AU2521395A (fr)
CZ (1) CZ285920B6 (fr)
DE (2) DE19506873C1 (fr)
ES (1) ES2129824T3 (fr)
PL (1) PL175442B1 (fr)
SI (1) SI9520152A (fr)
WO (1) WO1996025250A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338198B (en) * 1998-06-05 2002-04-10 Kvaerner Technology & Res Ltd Mill housings
IT1302785B1 (it) * 1998-10-15 2000-09-29 Danieli & C Ohg Sp Metodo per la realizzazione di spalle per gabbie dilaminazione e spalle ottenute con tale metodo.
KR101496001B1 (ko) * 2013-05-06 2015-02-25 주식회사 포스코 압연장치
DE102022207734A1 (de) * 2022-07-27 2024-02-01 Sms Group Gmbh X-Shape Walzenständerkontur zur Verbesserung des Einschnürverhaltens und Materialeinsatzes (Gewichtsoptimierung) eines Walzenständers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1973425A (en) * 1933-01-13 1934-09-11 United Eng Foundry Co Rolling mill housing and method of constructing the same
JPS56151108A (en) 1980-04-24 1981-11-24 Nippon Steel Corp Reinforcing and supporting method for rolling mill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9625250A1 *

Also Published As

Publication number Publication date
DE19506873C1 (de) 1996-07-04
KR19980702255A (ko) 1998-07-15
EP0809546B1 (fr) 1999-03-31
CZ285920B6 (cs) 1999-11-17
JP3841850B2 (ja) 2006-11-08
WO1996025250A1 (fr) 1996-08-22
CZ244697A3 (cs) 1999-03-17
US5839314A (en) 1998-11-24
AU2521395A (en) 1996-09-04
PL321828A1 (en) 1997-12-22
SI9520152A (en) 1997-12-31
JPH08215723A (ja) 1996-08-27
PL175442B1 (pl) 1998-12-31
KR100352221B1 (ko) 2002-12-16
DE59505541D1 (de) 1999-05-06
ES2129824T3 (es) 1999-06-16

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