EP0337145B1 - Dispositif pour supporter hydrostatiquement les cylindres d'un laminoir - Google Patents

Dispositif pour supporter hydrostatiquement les cylindres d'un laminoir Download PDF

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Publication number
EP0337145B1
EP0337145B1 EP89104651A EP89104651A EP0337145B1 EP 0337145 B1 EP0337145 B1 EP 0337145B1 EP 89104651 A EP89104651 A EP 89104651A EP 89104651 A EP89104651 A EP 89104651A EP 0337145 B1 EP0337145 B1 EP 0337145B1
Authority
EP
European Patent Office
Prior art keywords
roll
support element
shell
shaped recess
pressure
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.)
Expired - Lifetime
Application number
EP89104651A
Other languages
German (de)
English (en)
Other versions
EP0337145A2 (fr
EP0337145A3 (en
Inventor
Erich Stoy
Hans Römmen
Dieter Rumpf
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
SMS Schloemann Siemag 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 SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT89104651T priority Critical patent/ATE82880T1/de
Publication of EP0337145A2 publication Critical patent/EP0337145A2/fr
Publication of EP0337145A3 publication Critical patent/EP0337145A3/de
Application granted granted Critical
Publication of EP0337145B1 publication Critical patent/EP0337145B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends

Definitions

  • the invention relates to a device for hydrostatic support of rolls of a rolling mill, in particular for direct support of the work rolls of a rolling mill, consisting of support elements arranged in the roll stand, which have shell-shaped recesses on their side facing the roll and which are connected to pressure medium lines.
  • roller support device however, it is disadvantageous that the support elements arranged next to one another at a distance permit only very little utilization of the available support surface.
  • the roller support efficiency is therefore also correspondingly low and can only be adapted to the respective requirements by means of greatly increased pump pressure. This in turn is associated with increased energy and cost expenditure.
  • the flow rate of the pressure medium is also dependent on the pressure loads emanating from the work rolls during operation of the rolling mill, which make special variable pump control necessary.
  • the height of the pressure medium flow which is always changed as a function of the work rolls, also has a disadvantageous effect on the cooling of the rolls.
  • special control valves with mechanical buttons placed at both ends of the roller and reducing the roller support surface are required in order to keep the roller in its predetermined target position.
  • a device for hydrostatic support of rolls of a rolling mill consisting of support elements arranged in the roll stand, which have bowl-shaped recesses on their side facing the roll, which are connected to pressure medium lines.
  • One embodiment provides that only one support element is provided for each roller, which extends over the entire length of the roller, with transverse webs in the bowl-shaped recess of the support element being spaced from one another and dividing the recess into a plurality of pressure chambers.
  • Pressure medium lines are connected to these, the pressure in the chambers being adjustable differently.
  • Each support element is held in position by several hydraulically actuated piston / cylinder units arranged in series under the controllable pressure of a hydraulic system.
  • the adjustable pressurization of the pressure chambers serves for fine adjustment of the rollers.
  • This entire hydraulic equipment including the large number of independent control elements is extremely complicated, requires a high level of investment and a correspondingly high level of maintenance.
  • the invention is based on the object of specifying a hydrostatic roller support device which, while avoiding the disadvantages of known devices, enables optimal use of the available support surface and can be produced with a minimum of effort and can be installed in support stands.
  • the device should be adaptable to minor differences in the roll diameters without reworking, the design and maintenance should be straightforward and clear in its usability.
  • the object is achieved in a device of the type mentioned in the preamble of claim 1 with the features mentioned in the characterizing part.
  • the recess of the support element which is elliptical in cross-section according to the invention, advantageously enables the construction of a pressure medium cushion with a maximum extension between the roll surface and the support element. Hydraulic centering measures can advantageously be dispensed with because the outer edges of the support element on the roll surface are sufficiently large to maintain favorable pressure conditions and for the pressure medium to escape. Furthermore, the elliptical recess of the support element enables problem-free adaptation to rollers with slightly different roller diameters.
  • each pressure chamber can be acted upon with different pressure and thus the support device can be optimally adapted to the different pressure loads occurring on the work rolls during operation of the rolling mill.
  • neither hydraulic auxiliary supports nor complicated multiple control devices are required.
  • the pressure medium flow can essentially always be kept constant.
  • An intensive, high cooling effect of the rollers as a result of heat transport through the hydraulic medium is also always achieved through the design and arrangement of the support element.
  • the locking bars are made of elastic material, especially plastic, they are characterized by low frictional resistance and excellent sealing effect.
  • the term "plastics" is to be understood here to mean all non-metallic, modern material combinations, in particular fiber-reinforced plastics. Due to their extremely long availability and optimal sealing effect, these are far superior to metallic materials.
  • the locking web is connected to a compression spring. With the help of this compression spring, the locking web is pressed close to the roller surface and held in position so that no pressure medium can get from one pressure chamber into the adjacent pressure chamber between the locking web and the roller surface.
  • the locking webs are arranged in the cup-shaped recess of the support element at an angle of approximately 45 degrees to the roller axis and to the pressure medium lines are connected several channels arranged in the support element with nozzles which open into the chambers.
  • This inclined arrangement of the locking webs and the nozzles in the support element is advantageously characterized by a particularly good pressure medium distribution in the chambers and protection of the roller surface.
  • three channels with nozzles are arranged in one plane in the support element, the central channel being directed perpendicularly to the roller surface and the two outer channels being directed obliquely outwards to the periphery of the roller surface.
  • the device for the hydrostatic support of rolls of a rolling mill consists of a support element (1) which, according to the invention, extends over the entire length of the roll (2).
  • This support element (1) is firmly clamped in a roll stand, not shown in the drawing.
  • the support element (1) is provided on the inside with a shell-shaped recess (3) which is elliptical in cross section.
  • this shell-shaped recess (3) which is indicated by dashed lines in the drawing, extends over the entire length of the support element (1) and is only closed off to the side by lateral end walls (4) lying directly against the roller Arranging transverse webs (5) transverse to the support element (1), which divide the bowl-shaped recess (3) into a plurality of pressure chambers (6).
  • Pressure medium lines (7) are connected to the outside of the support element (1), through which channels (8) and nozzles (9) arranged in the support element (1), the hydraulic pressure media are introduced into the chambers (6) under certain pressure.
  • lines (10) are connected to the outside of the support element (1), specifically for the supply of lubricants, such as oil or the like, into the area between the roller surface and the barrier web (5).
  • the lubricant is very advantageously fed into the area between the roller surface and the locking web (5) via a plurality of openings (11) spaced apart from one another in the locking web (5).
  • the support element (1) shown in FIG. 1, which engages the roller (2), makes it very advantageous to use almost 100 percent of the support surface of the support element (1) to support the work roll or any other roll that is used, for example, to support the work rolls , achieved, so that in comparison to known support devices under otherwise identical working conditions of the rolling mill it is possible to work with up to about 70% less pressure and energy.
  • the pressure medium is fed into the pressure chambers (6) very advantageously via valve-controlled pressure medium supply lines (7), so that the contact pressure in the individual pressure chambers (6) varies and the pressure in each area of the roller can thus be optimally adapted to the requirements. This is of particular importance when supporting relatively long work rolls with small diameters (200 mm and less).
  • the locking webs (12) in the bowl-shaped recess of the support element (13) can also very advantageously be arranged at an angle of approximately 45 degrees to the roller axis (14), in such a way that the circumferential direction Seen roller (15), the upper and lower ends of the locking webs (12) overlap.
  • the entire surface of the roller (15) is brought into contact with the pressure medium, which in the same way as in Fig. 1 via pressure medium supply lines, channels (16) and the nozzles (17) in Corresponding to the locking webs (12) in the support element (13) arranged accordingly inclined.
  • the lubricant is fed into the area between the locking webs (12) and the roller surface in the same way as in the support element (1) shown in FIG. 1, namely through corresponding openings (19) in the support element (13).
  • FIG. 3 shows in cross section and on an enlarged scale
  • three channels (16) with their nozzles (17) for the pressure medium supply into the chamber (18) are each arranged in one plane such that the support element (13) pressure medium supplied from the outside in the direction of the arrow (20) via the nozzles (1) both into the central region and into the edge regions of the crescent-shaped pressure chamber (18).
  • a gap width (21) between approximately 0.5 and 1.5 mm is expediently maintained between the support element (13) and the roller body (15), as a result of which any inaccuracies are covered or compensated for and hydraulic centering measures can be dispensed with.
  • the support element (13) is firmly clamped to the frame of the rolling stand with the help of wedges or the like, so that it can be easily installed and removed or replaced at any time if necessary
  • the three channels (16) located in the support element (13) in one plane with the nozzles (17) can be arranged very advantageously and also in such a way that the central channel (16), as in Fig. 3, perpendicular to the Roll surface is directed, whereas, however, the outer channels (16) with their nozzles (17) are directed obliquely outwards to the periphery of the roller surface.
  • a high dynamic centering ability is achieved, in particular due to the inclined position of the nozzles (17), which can very advantageously be designed as flat jet nozzles.
  • the locking webs (12) according to the invention consist of an elastic material, in particular plastic, and the lubricant is introduced under high pressure between the roller surface and the locking web, the sliding friction in the area of the locking webs is reduced to a minimum.
  • the service life of the barrier webs (12), which can also be easily replaced and renewed at any time, is therefore very long.
  • the measures according to the invention are not limited to the exemplary embodiments shown in the drawing figures.
  • the locking webs within the support element can be in any angular arrangement and can be shaped in any way, in particular also lie one above the other.
  • the respective structural design is left to the person skilled in the art to adapt to the later use of the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Crushing And Grinding (AREA)
  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Metal Rolling (AREA)

Claims (4)

1. Dispositif pour le support direct hydrostatique de cylindres de travail d'une cage de laminage, constitué par des organes de support qui sont agencés dans la cage de laminage et qui comportent des évidements en forme de coquille et sont raccordés à des conduits d'agent de pression du côté orienté vers le cylindre, un organe de support (1, 13) seulement étant chaque fois prévu pour chaque cylindre (2, 15) et s'étendant sur toute la longueur du cylindre (2, 15), des patins de blocage (5, 12) étant agencés dans l'évidement en forme de coquille (3) de celui-ci, à distance l'un de l'autre,transversalement, lesdits patins de blocage divisant l'évidement en forme de coquille (3) en plusieurs chambres de pression (6, 18) auxquelles sont raccordés les conduits d'agent sous pression (7), caractérisé en ce que l'évidement en forme de coquille (3) affecte, en section, la forme d'une ellipse, en ce que les patins de blocage (5, 12) se présentent sous forme de croissant et sont constitués en une matière élastique, notamment en une matière synthétique et en ce qu'ils sont équipés d'ouvertures (11, 19) pour l'alimentation en agent lubrifiant dans les zones comprises entre la surface du cylindre et les patins de blocage (5, 12).
2. Dispositif selon la revendication 1 caractérisé en ce que le patin de blocage (5, 12) est relié à un ressort de compression (22).
3. Dispositif selon la revendication 1 ou 2 caractérisé en ce que les patins de blocage (5, 12) sont agencés dans l'évidement en forme de coquille (3) de l'organe de support (1, 13) selon un angle d'environ 45 degrés par rapport à l'axe (14) du cylindre et en ce que des canaux (8, 16) agencés dans l'organe de support (1, 13), équipés d'éjecteurs (9, 17) sont raccordés aux conduits d'agent sous pression (7), et débouchent dans les chambres (6, 18).
4. Dispositif selon la revendication 3 caractérisé en ce que chaque fois trois canaux (8, 16) équipés d'éjecteurs (9, 17), destinés à l'alimentation en agent sous pression dans l'organe de support (1, 13) sont agencés dans un plan, le canal médian étant orienté perpendiculairement sur la surface du cylindre et les deux canaux externes étant inclinés vers l'éx- térieure , vers la périphérie, sur la surface du cylindre.
EP89104651A 1988-04-11 1989-03-16 Dispositif pour supporter hydrostatiquement les cylindres d'un laminoir Expired - Lifetime EP0337145B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89104651T ATE82880T1 (de) 1988-04-11 1989-03-16 Vorrichtung zur hydrostatischen abstuetzung von walzen eines walzwerkes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811952A DE3811952A1 (de) 1988-04-11 1988-04-11 Vorrichtung zur hydrostatischen abstuetzung von walzen eines walzwerkes
DE3811952 1988-04-11

Publications (3)

Publication Number Publication Date
EP0337145A2 EP0337145A2 (fr) 1989-10-18
EP0337145A3 EP0337145A3 (en) 1990-04-04
EP0337145B1 true EP0337145B1 (fr) 1992-12-02

Family

ID=6351710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104651A Expired - Lifetime EP0337145B1 (fr) 1988-04-11 1989-03-16 Dispositif pour supporter hydrostatiquement les cylindres d'un laminoir

Country Status (6)

Country Link
US (1) US4996858A (fr)
EP (1) EP0337145B1 (fr)
JP (1) JP2716517B2 (fr)
AT (1) ATE82880T1 (fr)
DE (2) DE3811952A1 (fr)
ES (1) ES2037299T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6959569B2 (en) * 2002-09-26 2005-11-01 Newfrey Llc Re-keyable lock assembly
US7007528B2 (en) * 2004-04-01 2006-03-07 Newfrey Llc Re-keyable lock cylinder
DE102006049161A1 (de) * 2006-10-18 2008-04-24 Sms Demag Ag Walzgerüst mit Stütz- und/oder Arbeitswalzen zum Walzen von Blechen oder Bändern
CN102615110A (zh) * 2012-04-13 2012-08-01 山西百一机械设备制造有限公司 精密带钢轧机用压辊冷却装置
DE102016122498A1 (de) 2016-11-22 2018-05-24 Sms Group Gmbh Verfahren zur hydrostatischen Abstützung von Arbeitswalzen für das Kaltwalzen hochfester und/oder dünner Bänder

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1349699A (fr) * 1964-04-17 Karlstad Mekaniska Ab Dispositif de charge pour cylindres de laminoirs ou calandres
FR1445170A (fr) * 1964-08-28 1966-07-08 Siemag Siegener Masch Bau Cage de laminoir équipée de moyens de soutien réglables attaquant la partie de l'enveloppe opposée à l'emprise des cylindres de laminage
NL6412232A (fr) * 1964-10-21 1966-04-22
NL134266C (fr) * 1967-02-28
DE1811764A1 (de) * 1968-11-29 1970-07-02 Froehling Fa Josef Stuetzgleitlager fuer Walzen
CH587688A5 (fr) * 1975-02-13 1977-05-13 Escher Wyss Ag
CH613134A5 (fr) * 1976-11-02 1979-09-14 Escher Wyss Ag
US4212504A (en) * 1979-02-26 1980-07-15 Bakanov Anatoly I Backing device for a working roll of a roll stand
JPS5768208A (en) * 1980-10-16 1982-04-26 Kawasaki Steel Corp Rolling mill
JPS5841606A (ja) * 1981-09-03 1983-03-10 Sumitomo Metal Ind Ltd 圧延機のバツクアツプロ−ルの支持方法
IT1177992B (it) * 1984-09-25 1987-09-03 Centro Speriment Metallurg Dispositivo per la regolazione della bombatura dei cilindri in un laminatoio
KR930000465B1 (ko) * 1985-05-17 1993-01-21 가부시기가이샤 히다찌세이사꾸쇼 압연기의 로울냉각장치 및 로울냉각방법
JPS6240913A (ja) * 1985-08-15 1987-02-21 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
JPS6245409A (ja) * 1985-08-26 1987-02-27 Nippon Kokan Kk <Nkk> ロ−ル冷却機構

Also Published As

Publication number Publication date
JP2716517B2 (ja) 1998-02-18
EP0337145A2 (fr) 1989-10-18
DE3811952A1 (de) 1989-10-19
DE58902842D1 (de) 1993-01-14
ATE82880T1 (de) 1992-12-15
EP0337145A3 (en) 1990-04-04
JPH0215807A (ja) 1990-01-19
ES2037299T3 (es) 1993-06-16
US4996858A (en) 1991-03-05

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