EP0065936A2 - Reversierwalzwerk begrenzter Leistung, insbesondere zum Warmwalzen von Spezialstählen oder von Nichteisenmetall - Google Patents

Reversierwalzwerk begrenzter Leistung, insbesondere zum Warmwalzen von Spezialstählen oder von Nichteisenmetall Download PDF

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Publication number
EP0065936A2
EP0065936A2 EP82830114A EP82830114A EP0065936A2 EP 0065936 A2 EP0065936 A2 EP 0065936A2 EP 82830114 A EP82830114 A EP 82830114A EP 82830114 A EP82830114 A EP 82830114A EP 0065936 A2 EP0065936 A2 EP 0065936A2
Authority
EP
European Patent Office
Prior art keywords
rolling
rolls
work
rolling mill
roll
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Withdrawn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
EP82830114A
Other languages
English (en)
French (fr)
Other versions
EP0065936A3 (de
Inventor
Rudolf Rothauer
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 Group SpA
Original Assignee
Innocenti Santeustacchio SpA
Innse Innocenti Santeustacchio SpA
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 Innocenti Santeustacchio SpA, Innse Innocenti Santeustacchio SpA filed Critical Innocenti Santeustacchio SpA
Publication of EP0065936A2 publication Critical patent/EP0065936A2/de
Publication of EP0065936A3 publication Critical patent/EP0065936A3/de
Withdrawn legal-status Critical Current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
    • 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 present invention relates to a reversible rolling mill particularly, but not exclusively, for the hot-rolling of special steels and non-ferrous metals.
  • the metal to be rolled is a special steel, such as, for example, stainless steel, silicone steel, and the like, or a non-ferrous metal
  • a reversible rolling mill of reduced capacity is widely and advantageously utilised because there is only a limited demand for rolled products of such materials.
  • a rolling mill of this type is essentially constituted by two reversible rolling stands, one having roughing rolls (roughing stand) and one having finishing rolls (finishing stand), which can be arranged in line or side-by-side.
  • the two rolling stands are separated by a material conveyor, usually formed by a roller table, which has a length greater than the length of the material leaving the roughing stand.
  • the rolling mill is equipped with transverse conveyors for transferring the material coming from the roughing stand to the working plane of the finishing stand.
  • the starting material for example, a bloom
  • the starting material must be rolled on the reversible roughing stand to a thickness such that the length of the rough billet is still less than the distance between the rolling stands.
  • the cooling of the intermediate billet (or intermediate product) and its limited length define the maximum dimensions of the starting bloom (thickness and length) and, consequently, the maximum elongation which can be effected on the reducer stand.
  • the rolling time on the finishing stand is very much longer than on the roughing stand, so that the roughing stand is only partially utilised.
  • the problem behind the present invention is that of devising and providing a reversible hot-rolling mill having structural and functional characteristics which will completely overcome the disadvantages of the prior art discussed above.
  • a reversible rolling mill for the hot-rolling of special steels or non-ferrous metals, which is characterised by the fact that it includes a rolling stand supporting a roughing unit and a finishing unit arranged in line, each unit including two work-rolls and actuator members for displacing the rolls in the rolling stand from an operative position to an inoperative position spaced from the rolling line of the rolling stand.
  • the working rolls of the roughing and finishing units may be lowered completely below the rolling line, or raised completely above it.
  • the work-rolls of the roughing and finishing units are open in the inoperative position, that is to say, spaced apart on opposite respective sides of the rolling line of the rolling stand by respective distances such that they allow the free passage of the material to be rolled through the rolling stand.
  • each of roughing and finishing units may, of course, include one or more back-up rolls arranged in any known configuration.
  • the main advantage of the rolling mill of this invention is due fundamentally to the elimination of the conveyor between the roughing and finishing units, which has been absolutely necessary until now. Consequently, the costs of the installation are reduced and savings are gained on the movement of the material with an implicit saving of time in the working cycle, but above all the loss of heat and associated cooling of the material is reduced in a considerable and substantial manner.
  • a reversible rolling mill is constituted essentially by a rolling stand 1 which supports a roughing unit 2 and a finishing unit 3 in line with one another.
  • the rolling line of the rolling stand 1 is indicated by A.
  • the roughing unit 2 is of the so-called "four-high" type and includes two work-rolls 6, 7 which are supported in a conventional manner with associated roll chocks 8, 9 in the opening 4 of a support housing 5 of conventional type.
  • the roll chocks 8, 9 are subjected to the action of respective oack up rolls and equilizing actuators, of which only the vertical rods 10, 11 and 12, 13 respectively, are shown in the Figures.
  • the bearing block 9 is also provided with wheels 14, 15 for engagement on support rails 16, 17 carried by the housing 5.
  • the roll chocx 20 is supported and equalized from above by means of conventional hydraulically-operated devices represented schematically by hook members 22, 23.
  • the roll chock 21 is provided with wheels 24, 25 for engagement with respective supporting guide rails 26, 27 carried by the housing 5.
  • the roughing unit 2 is shown in a working condition, that is, with the work-rolls 6, 7 close to one another and maintained at a rolling distance by actuator devices, schematically indicated 28, 29, positioned respectively in the upper part and the lower part of the housing 5.
  • actuator devices schematically indicated 28, 29, positioned respectively in the upper part and the lower part of the housing 5.
  • These devices 28, 29 may be of any conventional type, for example, interrupted screws, hydraulic cylinders, wedges, eccentrics or any combination of these.
  • the roughing unit 2 is shown in its inoperative condition.
  • the work-rolls 6, 7 are spaced from one another by a predetermined distance on each side of the rolling line A so as to allow the material in the roughing stage to pass without interference.
  • the work-roll 7 and its associated back-up roll 19 are lowered simultaneously by means of the adjustment device 29. This simultaneous lowering continues until the roll chock 9 of the work-roll 7 abuts the rails 16, 17 by which it is stopped positively. From this point, it is advantageous to continue the lowering of the back-up roll 19 and the associated roll chocR ' 21 until the back-up roll 19 is spaced by a predetermined distance Z 1 from the corresponding work-roll 7.
  • the finishing unit 3 which is shown in the working position in Figure 1, is constructed in exactly the same way to the roughing unit 2.
  • the finishing unit 3 includes a pair of work-rolls 30, 31 with respective roll chocks 32, 33, and a pair of back-up rolls comprising an upper roll 34 and a lower roll 35 each with associated roll chock 36, 37.
  • These rolls are displaceable relative to the rolling line A by means, for example, of upper and lower interrupted screws 38, 39 and hydraulic equalizing devices of which only a pair of vertical rods are shown.
  • the roll chocks 33, 37 of the lower rolls 31, 35 are provided respectively with wheels 40, 41 and 44, 45 for resting on corresponding guide rails 42, 43 and 46, 47.
  • the finishing unit is shown in an inoperative position which can be achieved in an identical manner to that described in respect of the roughing unit 2.
  • the arrangement of the rolls of each of the units in the inoperative condition is particularly advantageous when the working rolls 6, 7 and 30, 31 are controlled by a single drive.
  • the rolling mill being of the reversible type
  • only the driven work-rolls rotate, while the corresponding back-up rolls remains stationary. Consequently, the inertia of the rotating parts of the unit which do not take part in the rolling is considerably reduced.
  • the rails 16, 17 and 42, 43 are already used in rolling stands to allow the removal and replacement of the work-rolls. It is advantageous,therefore, to use these rails as positive stops against the downward displacement of the lower work-roll when it is carried to its inoperative position. It must be understood, however, that for particular working requirements the rails can be replaced by proper abutment stops fixed rigidly to the support structure, or mounted adjustably with respect thereto by means which are themselves conventional.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP82830114A 1981-05-21 1982-04-28 Reversierwalzwerk begrenzter Leistung, insbesondere zum Warmwalzen von Spezialstählen oder von Nichteisenmetall Withdrawn EP0065936A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21860/81A IT1138380B (it) 1981-05-21 1981-05-21 Laminatoio reversibile di limitata potenzialita'particolarmente per la laminazione a caldo di acciai speciali e di metalli non ferrosi
IT2186081 1981-05-21

Publications (2)

Publication Number Publication Date
EP0065936A2 true EP0065936A2 (de) 1982-12-01
EP0065936A3 EP0065936A3 (de) 1983-02-16

Family

ID=11187873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830114A Withdrawn EP0065936A3 (de) 1981-05-21 1982-04-28 Reversierwalzwerk begrenzter Leistung, insbesondere zum Warmwalzen von Spezialstählen oder von Nichteisenmetall

Country Status (4)

Country Link
EP (1) EP0065936A3 (de)
JP (1) JPS57199504A (de)
ES (1) ES512080A0 (de)
IT (1) IT1138380B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444248A1 (de) * 1990-02-13 1991-09-04 HERMANN BERSTORFF Maschinenbau GmbH Walzenmantelwechselvorrichtung an einem Kalander
US6160449A (en) * 1999-07-22 2000-12-12 Motorola, Inc. Power amplifying circuit with load adjust for control of adjacent and alternate channel power
DE10103683B4 (de) * 2001-01-27 2010-01-21 Sms Siemag Aktiengesellschaft Walzvorrichtung für Walzstraßen mit gestaffelten Gerüsten, insbesondere Tandemwalzanlage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896840B1 (de) * 1996-04-03 2002-08-28 Hitachi, Ltd. Walzwerk, walzverfahren und walzanlage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE416337A (de) * 1935-07-23
GB488179A (en) * 1937-03-12 1938-07-01 Krupp Fried Grusonwerk Ag A rolling mill for rolling strips, sheets and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE416337A (de) * 1935-07-23
GB488179A (en) * 1937-03-12 1938-07-01 Krupp Fried Grusonwerk Ag A rolling mill for rolling strips, sheets and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444248A1 (de) * 1990-02-13 1991-09-04 HERMANN BERSTORFF Maschinenbau GmbH Walzenmantelwechselvorrichtung an einem Kalander
US6160449A (en) * 1999-07-22 2000-12-12 Motorola, Inc. Power amplifying circuit with load adjust for control of adjacent and alternate channel power
DE10103683B4 (de) * 2001-01-27 2010-01-21 Sms Siemag Aktiengesellschaft Walzvorrichtung für Walzstraßen mit gestaffelten Gerüsten, insbesondere Tandemwalzanlage

Also Published As

Publication number Publication date
ES8304816A1 (es) 1983-04-01
IT1138380B (it) 1986-09-17
EP0065936A3 (de) 1983-02-16
JPS57199504A (en) 1982-12-07
ES512080A0 (es) 1983-04-01
IT8121860A0 (it) 1981-05-21

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Inventor name: ROTHAUER, RUDOLF