US3699794A - Universal rolling mill stand having more than one caliber for rolling profiles beams such as i-beams - Google Patents

Universal rolling mill stand having more than one caliber for rolling profiles beams such as i-beams Download PDF

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Publication number
US3699794A
US3699794A US70364A US3699794DA US3699794A US 3699794 A US3699794 A US 3699794A US 70364 A US70364 A US 70364A US 3699794D A US3699794D A US 3699794DA US 3699794 A US3699794 A US 3699794A
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Prior art keywords
rolls
vertical
roll
mill stand
caliber
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Expired - Lifetime
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US70364A
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English (en)
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Otto Karl Buchheit
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Moeller and Neuman GmbH
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Moeller and Neuman GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00—Vertical ducts; Channels, e.g. for drainage
    • E04F17/04—Air-ducts or air channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/12—Flanged joints specially adapted for particular pipes
    • F16L23/14—Flanged joints specially adapted for particular pipes for rectangular pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges

Definitions

  • ABSTRACT A universal rolling mill stand for reversing rolling of profiled material such as I-beams has at least two calibers which are formed by an adjustable pair of horizontal rolls and at least two pairs of vertical rolls. At least one of the pairs of vertical rolls is adjustable by power-operated means between passes, and for this purpose the rolls are mounted in an intermediate frame in which at least one roll is displaceable and which is displaceable in the stand. Edging rolls may be incorporated-in the stand.
  • the present invention is not limited to three-high universal mill stands, but is directed in particular to two-high universal mill stands, wherein, in agreement with the known three-high mill stand, the radial center axes of two pairs of vertical rolls are disposed in the same horizontal plane.
  • a final object is to perform with a single universal mill stand all those passes for which heretofore a rnulti ple stand beam rolling train was required, inclusive of the finishing pass which was previously effected in a special finishing stand which by itself required a threehigh universal mill stand of the known kind.
  • one of the calibers may be constructed as finishing caliber with cylindrical vertical rolls so that neglecting the roughing mill stand for producing primary or rough profiles the whole beam rolling train consists of only one universal mill stand.
  • the two-high construction is preferred within the scope of the invention because of its lower construction cost and because it is indeed sufficient to have only two calibers including a finishing caliber when at least one of the calibers is variable by power-driven means between the passes. If such two-high construction is selected, reversible roll driving motors are obviously required because of the reversing operation of the rolling mill stand, in contrast to a three-high construction. The ensuing increase in cost, however, is out of proportion less than the cost of only one single caliber universal mill stand of conventional construction saved thereby.
  • the preferred two-high construction furthermore does not require expensive rocking or lifting tables, but requires only reversible roll ways or when a caliber operated as finishing caliber is passed through only once requires a reversible roll way, a simple roll way for the finishing caliber, and a cross feeder preceding the mill between the roll ways.
  • the invention provides two possibilities for effecting the relative displacement referred to.
  • the one solution consists in that the superimposed roll supporting shafts for the horizontal rolls are axially adjustable in the same direction between passes by a power-operated adjusting device located at the shaft bearing end.
  • the other preferred solution provides that the vertical roll pair for a caliber which is adjustable by power-operated means is mounted in an intermediate frame which is horizontally displaceable by a motor or other power-operated means and only the outer vertical roll is adjustably guided in the intermediate frame.
  • the associated horizontal roll or the respective vertical roll pair and the intermediate frame thereof must be horizontally displaced by half the screw-down path of the outer vertical roll in order to maintain the symmetry of the caliber.
  • the intermediate frames for the vertical rolls may alternatively be disposed in a floating manner and in such way that they adjust themselves to the same vertical rolling pressures in rolling operation, as in the: case of a universal mill stand stressed by tie-rods and having a floating center frame in accordance with the German Pat. specification No. 1,129,441. It is obvious that displaceable intermediate frames for the vertical rolls in the sense of the invention can be realized also in classical frame stands in that the intermediate frames are guided and supported in horizontal guides of the stand frames within the window openings thereof.
  • the pass apparatus constructed in accordance with the invention may further include adjusting means which engage at least one vertical roll frame and which, dependently upon the screw-down path of the outer vertical roll, displace the associated frame and thus also the inner vertical roll mounted therein by half the screw-down path of the outer vertical roll in opposition to the screw-down direction thereof.
  • adjusting means which engage at least one vertical roll frame and which, dependently upon the screw-down path of the outer vertical roll, displace the associated frame and thus also the inner vertical roll mounted therein by half the screw-down path of the outer vertical roll in opposition to the screw-down direction thereof.
  • resilient members such as springs, or hydraulic pressure compensating devices are disposed within the adjusting means with particular advantage, such as described in the German Pat. specification No. 1,057,049 for a single caliber universal mill stand.
  • FIG. 1 is a view of a stand considered in the rolling direction
  • FIG. 2 is a plan view of the intermediate frames for the vertical rolls with the upper part of the stand removed
  • FIG. 3 is a section along the line III III in FIG. 1, and
  • FIG. 4 is a diagrammatic illustration of a beam rolling train incorporating a universal mill stand according to the invention.
  • a two caliber two-high universal mill stand the constructional form of horizontally divided stand members is utilized the parts of which are held together by pro-stressed tie-rods.
  • the stand illustrated consists substantially of an upper stand part 1 and a lower stand part 2 which are connected together under stress by means of four tierods 3 (FIG. 2).
  • the horizontal roll supporting shafts 4 and 5 are mounted in the stand parts in chocks 6 and 7 which are symmetrically adjustable by screw-down screws 8 and 9.
  • Each of the roll supporting shafts 4, 5 carries in the immediate vicinity of their chocks two horizontal rolls 4 and 4" or- 5 and 5", respectively, which are produced thereon by turning, for two calibers A and B.
  • each pair of two pairs of vertical rolls 10, 11 and 12, 13, respectively, is disposed in a closed intermediate frame 14 or 15, the frames being disposed horizontally between the stand parts 1 and 2 which are in one piece in the direction of the roll axis of the stand.
  • These intermediate frames 14, 15 for the vertical rolls comprise in their lateral limbs 14a or 15a rectangular openings 16, 17 for the tie-rods 3 to extend therethrough.
  • the individual intermediate frames 14, 15 are not connected under stress by the tie-rods to the stand parts 1, 2, but the stressing force of the tie-rods, which are hydraulically extensible, extends through rectangular spacing members 18 which surround the tie-rods 3 and have a slightly greater length than the thickness of the intermediate frames 14, 15 for the vertical rolls in the region of the openings 16, 17 thereof.
  • the individual intermediate frames l4, 15 are displaceably or floatingly disposed between the stand parts 1, 2. Nevertheless they are positively guided by the stressed spacing members 18 in their rectangular openings 16, 17.
  • the mutually oppositely disposed ends 14b and 15b of the vertical roll intermediate frames l4, 15 project from between the stand columns as may be seen from FIG. 1 in conjunction with FIGS. 3 and are increased in thickness in the extension of their limbs 14a and 15a; they are supported or guided at these points by support members or brackets 1a and 2a of the stand parts 1, 2, the support members or brackets connecting the stand columns.
  • the vertical constructional height or thickness of the individual intermediate frames 14, I5 is continuously reduced, as may be seen from FIG. 3, to a dimension a little smaller than the minimum gap between the roll supporting shafts 4, 5.
  • the outwardly projecting ends of the intermediate frames 4, 5 for the vertical rolls are supported by lifting jacks 20.
  • the inner vertical rolls 11 and 12 are rigidly mounted in the two horizontally disposed intermediate frames 14, 15 for the vertical rolls and only the outer vertical rolls l0 and 13 are adjustable by poweroperated means between the passes.
  • the outer vertical rolls 10, 13 are mounted in chocks 21, 22 which are adjustable by means of two pressure spindle pairs 23 and 24.
  • the pressure spindle pairs are guided in caps 14c, 15c of the intermediate frames 14, 1S and the caps in turn are connected under stress to the limbs 14a, 15a of the intermediate frames by horizontal tie-rods not illustrated.
  • the frame members 14c, 15c support drives 25, 26 which are not illustrated in detail and which include motors indicated by circles 27, 28 for rotating the pressure spindles 23, 24.
  • the two calibers A and B can be altered from pass to pass during reversing operation of the rolling mill stand owing to the described floating arrangement of the intermediate frames 14, 15 for the vertical rolls, the symmetrical adjustability of the horizontal rolls 4', 4" and 5', 5", and to the one sided adjustability of the vertical rolls and 13, wherein the caliber symmetry is adjusted, however, only upon entry of the material to be rolled into the pass, owing to the horizontal displacement of the respective intermediate frame 14 or 15; such displacement is effected because the vertical rolls of the filled caliber tend to adjust themselves to the same vertical rolling pressures, and this they are able to do owing to the floating arrangement of the inter-- mediate frame for the vertical rolls.
  • a further feature of the invention provides a positive displacement, for example of the intermediate frame 14, which is co-ordinated with the screw-down of the outer vertical roll 10; such co-ordinated displacement is obviously also required in the same manner for the caliber B, provided this caliber is not the finishing caliber which is invariable or which may be variable only for a programme change.
  • the adjusting device for the frame 14 consists of a hydraulic measuring cylinder 32 which is fixed at to the lower stand part 2 under the outwardly projecting end of the intermediate frame 14 and a piston having a piston rod 33 which extends into a spring casing 34 which is fixed at 35 to the intermediate frame 14.
  • the end 33a of the piston rod 33 is enlarged like a piston and is located between two strong helical springs 36, 37 which are prestressed between the piston-like end 33a and end covers of the spring casing 34.
  • the springs 36, 37 are so strong, and the frame 14 is so easily movable on the lower stand part 2 for example by means of rollers 40, 41 (see also FIG.
  • the intermediate frame can adjust itself to produce equal vertical rolling pressures during the rolling process owing to the resilient members inserted between the adjusting means for the intermediate frame 14.
  • An equivalent for the illustrated symmetrical variability at least of the caliber A may consist in that the intermediate frames l4, 15 are non-displaceable and are thus under certain circumstances unitary with the stand columns or are even cast on to them, e.g. in a classical frame stand, that only the outer vertical rolls 10 are provided with a power operated screw-down device and that the horizontal rolls 4', 4" are axially displaceable. Since the construction of screw-down devices for superimposed rolls moving axially in the same direction are known for example from the German Pat. specification No. 963,144, a detailed description thereof can be omitted. A modification of the axial adjustability of the horizontal rolls for solving the problems posed within the scope of the invention,
  • the rolling of I-beams is known to require edging passes before or after the universal passes in order to influence the height of the flanges of the profile.
  • the universal rolling mill stand according to the invention comprises edging roll pairs 44 and 45 which are disposed in accordance with FIG. 3 in bearing housings lb and 2b which are unitary with the upper and lower stand parts 1 and 2 respectively. They also are adjustable between the passes by power operated means namely through pairs of synchronously driven screwdown spindles 46, 47.
  • the drive of the edging rolls 44, 45 may be effected through jointed spindles from an enlarged main drive from which also extend the main spindles for driving the two roll support shafts 4 and 5. According y only one reversible driving motor is required for the whole two-caliber combined universal and edging mill stand according to the invention.
  • the roll drive is not a subject of this invention.
  • FIG. 4 shows a roughing stand 50 with roll ways 51,52 extending on the two sides thereof over the maximum length of the primary or rough profiles, for performing a plurality of primary or roughing passes in reversing operation.
  • the rolled material is moved by means of a cross conveyor 53 from the exit roll way to a roll way 54 in the line of which the caliber A of a two-caliber universal mill stand 55 is located.
  • a roll way 56 is disposed in the continuation of the roll way 54 so that by means of the reversible roll ways 54, 56 and the adjustable caliber A of the universal mill 55 as well as the edging rolls 44, 45 all universal passes except one can be performed.
  • the vertical rolls 12, 13 of which have for this purpose cylindrical surfaces Prior to the finishing pass in the caliber B, the vertical rolls 12, 13 of which have for this purpose cylindrical surfaces (FIG. I) the rolled material is shifted from the roll way 56 by means of a cross conveyor 57 in front of the caliber B and finished rolled in one pass. The finished rolled material travels on the axis roll way 58 for further treatment.
  • the offset stand arrangement of a beam rolling train according to FIG. 4 on two parallel lines does not serve alone for saving length of the rolling mill building owing to the overlap of the roll way lengths, but it makes possible also a simple construction of quick change devices for removing and inserting roll sets, or for interchanging changeover stands.
  • a shifting platform or carriage 60 common to both stands which has two rail pairs 61, 62 and which can be displaced from the illustrated position in which either the roll set of the roughing stand 50 or the roll set of the universal stand 55 can be removed.
  • the prepared interchange unit is deposited in either case on the respective free rail pair 61 or 62 and can be moved in front of the respective empty stand position by displacement of the stage 60 to the left for interchanging the roll set for the roughing stand 50, or to the right for interchangng the roll set of the universal mill stand 55. For this reason the two stands 56 and 55 are offset relatively to each other by only one displacement stroke of the carriage 60.
  • the arrangement of a beam rolling train illustrated in FIG. 4 offers the stated advantages even when the universal mill stand 55 is a three-high mill stand with fixedly adjusted calibers for three reversing passes and accordingly, or by any other reason, an additional universal finishing mill stand is erected behind the universal mill stand in the continuation of the exit roll way 58.
  • FIGS. 1 to 3 the entry guiding devices and in FIG. 1 the edging rolls have been omitted for clarity.
  • a single universal rolling mill stand for reversing rolling of profiled beams comprising:
  • each caliber being formed by pairs of cooperating horizontal and vertical rolls, each of said rolls having an axis, the axes of said vertical rolls lying in a common vertical plane, chocks for said vertical rolls, guide means for said chocks,
  • a universal mill stand according to claim 1 including reversible roll driving motors operatively coupled to said rolls to effect reversing rolling.
  • a universal rolling mill stand for reversing rolling of profiled beams comprising:
  • each caliber being formed by pairs of cooperating horizontal -and vertical rolls, each of said rolls having an axis, the axes of said vertical rolls lying in a common vertical plane, each pair of vertical rolls having an inner roll and an outer roll,
  • At least one pair of said pairs of vertical rolls being a first power operated means for setting at least I mounted in an intermediate frame in said mill stand, said intermediate frame being horizontally displaceable, only said outer vertical roll of said one pair being adjustably displaceable in said intermediate frame by a first power operated means,
  • a universal mill stand including a third power operated means for displacing said intermediate frame horizontally in said mill stand.
  • a universal mill stand according to claim 1 including superimposed roll supporting shafts-for the horizontal rolls which are axially adjustable in the same direction between passes by a power operated screwdown device disposed at the shaft end.
  • a universal mill stand including at least two intermediate frames for said vertical rolls, said intermediate frames being floatingly arranged to adjust themselves to the same rolling pressure during a rolling operation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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US70364A 1969-09-13 1970-09-08 Universal rolling mill stand having more than one caliber for rolling profiles beams such as i-beams Expired - Lifetime US3699794A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899910A (en) * 1973-06-19 1975-08-19 Nippon Kokan Kk Prestress type rolling mill
US3968672A (en) * 1973-12-05 1976-07-13 Nippon Steel Corporation Method of rolling shaped steel members having flanges and apparatus therefor
US4706484A (en) * 1986-07-28 1987-11-17 United Engineering Rolling Mills, Inc. Universal rolling mill

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2265555C3 (de) * 1972-11-30 1981-11-19 Georg 7416 Reutlingen Mez Winkelstück zur Flanschverbindung von im Querschnitt rechteckigen Klimatisierungskanälen o.dgl.
DE2265556C3 (de) * 1972-11-30 1981-11-19 Georg 7416 Reutlingen Mez Winkelstück zur Flanschverbindung von im Querschnitt rechteckigen Klimatisierungskanälen o.dgl.
CH680873A5 (en) * 1990-02-12 1992-11-30 Dresohn Ag Air duct with connection flange to air shaft - has flange with four legs, forming triangle, with one leg clamped between two others
US20160010787A1 (en) * 2014-07-08 2016-01-14 Solar Turbines Incorporated Expansion joint for connecting an exhaust collector of an engine to a duct system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US395350A (en) * 1889-01-01 Apparatus for rerolling old rails
US420498A (en) * 1890-02-04 Rolling-mill
US968465A (en) * 1909-07-27 1910-08-23 New York Steel Beam & Girder Company Art of rolling.
DE1129441B (de) * 1958-08-08 1962-05-17 Verwaltungsgesellschaft Moelle Universalwalzgeruest
FR1434248A (fr) * 1965-02-22 1966-04-08 Wendel & Cie De Perfectionnements au laminage de fers profilés en eta ou de sections analogues

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US395350A (en) * 1889-01-01 Apparatus for rerolling old rails
US420498A (en) * 1890-02-04 Rolling-mill
US968465A (en) * 1909-07-27 1910-08-23 New York Steel Beam & Girder Company Art of rolling.
DE1129441B (de) * 1958-08-08 1962-05-17 Verwaltungsgesellschaft Moelle Universalwalzgeruest
FR1434248A (fr) * 1965-02-22 1966-04-08 Wendel & Cie De Perfectionnements au laminage de fers profilés en eta ou de sections analogues

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899910A (en) * 1973-06-19 1975-08-19 Nippon Kokan Kk Prestress type rolling mill
US3968672A (en) * 1973-12-05 1976-07-13 Nippon Steel Corporation Method of rolling shaped steel members having flanges and apparatus therefor
US4706484A (en) * 1986-07-28 1987-11-17 United Engineering Rolling Mills, Inc. Universal rolling mill

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DE1946547B1 (de) 1971-10-28

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