EP0535767B1 - Rolling train for rolling section beams - Google Patents

Rolling train for rolling section beams Download PDF

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Publication number
EP0535767B1
EP0535767B1 EP92250251A EP92250251A EP0535767B1 EP 0535767 B1 EP0535767 B1 EP 0535767B1 EP 92250251 A EP92250251 A EP 92250251A EP 92250251 A EP92250251 A EP 92250251A EP 0535767 B1 EP0535767 B1 EP 0535767B1
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EP
European Patent Office
Prior art keywords
rolling
stand
universal
reversing
stitch
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.)
Revoked
Application number
EP92250251A
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German (de)
French (fr)
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EP0535767A1 (en
Inventor
Erich Reth
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
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Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0535767A1 publication Critical patent/EP0535767A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088—H- or I-sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/14—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand

Definitions

  • the invention relates to a rolling mill for rolling carrier profiles, consisting of at least one duo-reversing roughing stand and several subsequent universal stands for work and finish rolling, two universal stands and one compression stand being put together to form a reversing tandem group and the reversible universal stands of the tandem group with double-conical vertical rolls are provided.
  • EP-A-02 56 409 discloses a shaped steel rolling mill with a double reversing roughing stand and a universal working and flange upsetting stand combined into a reversing tandem group, as well as a universal finishing stand provided on the output side.
  • the shaped steel rolling mill shown in FIG. 1 of this document (closest prior art) provides pre-rolling in the duo reversing roughing mill in seven to fifteen passes before the carrier preform is passed on to the reversing tandem mill group.
  • the desired profile is largely approximated by repeated rolling in three or five passes and after the last pass into a finished stand introduced after the carrier flanges have been brought to the exact target width in an upstream flange upsetting stand.
  • the final universal finish stitch processes the wearer in its final shape.
  • the present invention is based on the object of creating a rolling train for rolling carrier profiles and a method for rolling these carrier profiles, with which high-quality carrier profiles with exact dimensions can be produced with relatively little investment.
  • a sizing universal stand is arranged in direct connection to the tandem group, the sizing universal stand provided for continuous rolling being provided with cylindrical vertical rolls.
  • the finished stitch of the rolled carrier is carried out as a smooth stitch in a separate sizing universal stand which immediately follows the tandem group.
  • This sizing stand is intended for continuous rolling and is opened in the tandem group during the reversing stitch.
  • the rollers of the sizing universal stand are only turned on for the last smoothing stitch in order to carry out the smoothing stitch. In this way, wear in the sizing frame is minimized, while the universal frames of the reversible tandem group are both fully involved in the deformation as working frames.
  • the support profile can be divided into several according to the inventive method successive rolling passes with the flanges always facing outwards and the facing flanges can be placed parallel in the last smoothing pass. This means that at the same time as the smoothing stitch in the sizing universal framework, the flanges are bent to the H cross-sectional shape with a small decrease in stitch.
  • the smooth stitch is preferably carried out with a stitch decrease of 5 to 20 percent.
  • the advantage of the present invention is that even if the reversing tandem group for reversing rolling of the carrier is followed by a shape-accurate sizing stand, and also if the construction costs are increased compared to Figure 2 of EP-A-02 56 409, as a result
  • the achievable shape retention and the lower wear of the universal stand performing the final stitch make the rolling mill work more economically and achieve better final qualities.
  • the sizing universal scaffolding which carries out only a small number of stitch approvals, can be carried out more easily than the universal working scaffolds.
  • An additional compression frame, as in FIG. 1 described in EP-A-02 56 409, is omitted.
  • the blocks coming from a furnace are pre-rolled in the duo reversing roughing stand 1, for example in seven passes, as is symbolically shown below the duo reversing roughing stand 1 using the arrows.
  • the preformed support profile is then delivered to the reversing tandem scaffold group 2, which consists of the reversible universal work scaffold 3, the reversible one as well Universal work stand 4 and the compression stand 5 arranged between them.
  • the sizing frame 6 is arranged, which is also a universal frame, but is not reversible.
  • the pre-rolled carrier profile first runs through the universal working scaffold 3, the upsetting scaffold 5 and then the universal working scaffold 4, then passes through the sizing scaffold 6 in continuous operation in order to perform a reversing stitch again in reverse order to go through the universal scaffolding 4, the upsetting frame 5 and the universal scaffolding 3.
  • the support profile passes through the universal work stand 3, the upsetting stand 5 and the universal work stand 4 and is finished-rolled in the sizing stand 6, which has meanwhile been adjusted to the final profile dimension.
  • the pass schedule scheme at 7 the flanges of the support profile in the universal work stands 3 and 4 are placed outside 7a and rolled as a so-called butterfly profile.
  • the deformation stitch on the second universal work scaffold 4 can be omitted, so that the penultimate stitch is a compression stitch on the compression scaffold 5.

Description

Die Erfindung betrifft eine Walzstraße zum Walzen von Trägerprofilen, bestehend aus mindestens einem Duo-Reversier-Vorgerüst und mehreren nachfolgenden Universalgerüsten zur Arbeits- und fertigwalzung, wobei zwei Universalgerüste und ein Stauchgerüst zu einer Umkehr-Tandemgruppe zusammengestellt und die reversierbaren Universalgerüste der Tandemgruppe mit doppelkonischen Vertikalwalzen versehen sind.The invention relates to a rolling mill for rolling carrier profiles, consisting of at least one duo-reversing roughing stand and several subsequent universal stands for work and finish rolling, two universal stands and one compression stand being put together to form a reversing tandem group and the reversible universal stands of the tandem group with double-conical vertical rolls are provided.

Aus der EP-A-02 56 409 ist ein Formstahl-Walzwerk mit einem Duo-Umkehr-Vorgerüst und zur Umkehr-Tandemgruppe zusammengefaßten Universal-Arbeits- und Flanschen-Stauchgerüst, sowie einem ausgangsseitig vorgesehenen Universal-Fertiggerüst bekannt. Das in Figur 1 dieser Schrift dargestellte Formstahlwalzwerk (nächstkommender Stand der Technik) sieht eine Vorwalzung in dem Duo-Umkehr-Vorwalzgerüst in sieben bis fünfzehn Stichen vor, bevor der Träger-Vorformling an die Umkehr-Tandemgerüstgruppe weitergegeben wird. Durch wiederholtes Walzen in drei bzw. fünf Durchläufen wird das gewünschte Profil weitgehend angenähert und nach dem letzten Durchlauf in ein Fertig-Gerüst eingeführt, nachdem in einem vorgeschalteten Flanschen-Stauchgerüst die Trägerflansche auf die exakte Sollbreite gebracht worden sind. Der abschließende Universal-Fertigstich bearbeitet den Träger in seiner Endform.EP-A-02 56 409 discloses a shaped steel rolling mill with a double reversing roughing stand and a universal working and flange upsetting stand combined into a reversing tandem group, as well as a universal finishing stand provided on the output side. The shaped steel rolling mill shown in FIG. 1 of this document (closest prior art) provides pre-rolling in the duo reversing roughing mill in seven to fifteen passes before the carrier preform is passed on to the reversing tandem mill group. The desired profile is largely approximated by repeated rolling in three or five passes and after the last pass into a finished stand introduced after the carrier flanges have been brought to the exact target width in an upstream flange upsetting stand. The final universal finish stitch processes the wearer in its final shape.

Der vorliegenden Erfindung liegt ausgehend von dem geschilderten Stand der Technik die Aufgabe zugrunde, eine Walzstraße zum Walzen von Trägerprofilen und ein Verfahren zum Walzen dieser Trägerprofile zu schaffen, mit der bzw. dem mit relativ geringem Investitionsaufwand qualitativ hochwertige Tragerprofile mit exakten Abmessungen herstellbar sind.Based on the described prior art, the present invention is based on the object of creating a rolling train for rolling carrier profiles and a method for rolling these carrier profiles, with which high-quality carrier profiles with exact dimensions can be produced with relatively little investment.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß in unmittelbarem Anschluß an die Tandemgruppe ein Sizing-Universalgerüst angeordnet ist, wobei das zur Durchlaufwalzung vorgesehene Sizing-Universalgerüst mit zylindrischen Vertikalwalzen versehen ist.To achieve the object, it is proposed according to the invention that a sizing universal stand is arranged in direct connection to the tandem group, the sizing universal stand provided for continuous rolling being provided with cylindrical vertical rolls.

Nach der Erfindung wird der Fertigstich des ausgewalzten Trägers als Glättstich in einem separaten Sizing-Universalgerüst, welches der Tandemgruppe unmittelbar nachfolgt, durchgeführt. Dieses Sizing-Gerüst ist zur Durchlaufwalzung vorgesehen und während des Reversierstiches in der Tandemgruppe geöffnet. Erst für den letzten Glättstich werden die Walzen des Sizing-Universalgerüstes angestellt, um den Glättstich durchzuführen. Auf diese Weise wird der Verschleiß im Sizing-Gerüst minimiert, während die Universalgerüste der reversierbaren Tandemgruppe beide als Arbeitsgerüste an der Verformung im vollen Umfang beteiligt sind. Da die Universalgerüste der Tandemgruppe mit doppelkonischen Vertikalwalzen versehen sind, kann nach dem erfindungsgemäßen Verfahren das Trägerprofil in mehreren aufeinanderfolgenden Walzstichen mit stets nach außen gestellten Flanschen ausgewalzt und können die nach außen gestellten Flansche in dem letzten Glättstich parallel gestellt werden. Das bedeutet, daß gleichzeitig mit dem Glättstich im Sizing-Universalgerüst bei einer geringen Stichabnahme die Flansche zur H-Querschnittsform auf gebogen werden. Vorzugsweise erfolgt der Glättstich bei einer Stichabnahme von 5 bis 20 Prozent.According to the invention, the finished stitch of the rolled carrier is carried out as a smooth stitch in a separate sizing universal stand which immediately follows the tandem group. This sizing stand is intended for continuous rolling and is opened in the tandem group during the reversing stitch. The rollers of the sizing universal stand are only turned on for the last smoothing stitch in order to carry out the smoothing stitch. In this way, wear in the sizing frame is minimized, while the universal frames of the reversible tandem group are both fully involved in the deformation as working frames. Since the universal stands of the tandem group are provided with double-conical vertical rollers, the support profile can be divided into several according to the inventive method successive rolling passes with the flanges always facing outwards and the facing flanges can be placed parallel in the last smoothing pass. This means that at the same time as the smoothing stitch in the sizing universal framework, the flanges are bent to the H cross-sectional shape with a small decrease in stitch. The smooth stitch is preferably carried out with a stitch decrease of 5 to 20 percent.

Der Vorteil der vorliegenden Erfindung besteht darin, daß, auch wenn der Umkehr-Tandemgruppe zum reversierenden Walzen des Trägers ein formgenaues Sizing-Gerüst nachgeschaltet ist, und auch, wenn der Bauaufwand gegenüber Figur 2 der EP-A-02 56 409 erhöht ist, infolge der erreichbaren Formhaltigkeit und des geringeren Verschleisses des den Endstich durchführenden Universalgerüstes das Walzwerk wirtschaftlicher arbeitet und bessere Endqualitäten erreicht. Das nur geringe Stichabnahmen ausführende Sizing-Universalgerüst kann dabei leichter ausgeführt werden als die Universal-Arbeitsgerüste. Ein zusätzliches Stauchgerüst, wie bei dem in der EP-A-02 56 409 beschriebenen Figur 1 entfällt.The advantage of the present invention is that even if the reversing tandem group for reversing rolling of the carrier is followed by a shape-accurate sizing stand, and also if the construction costs are increased compared to Figure 2 of EP-A-02 56 409, as a result The achievable shape retention and the lower wear of the universal stand performing the final stitch make the rolling mill work more economically and achieve better final qualities. The sizing universal scaffolding, which carries out only a small number of stitch approvals, can be carried out more easily than the universal working scaffolds. An additional compression frame, as in FIG. 1 described in EP-A-02 56 409, is omitted.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und wird nachfolgend beschrieben:
Die von einem Ofen kommenden Blöcke werden in dem Duo-Umkehr-Vorgerüst 1 beispielsweise in sieben Stichen vorgewalzt, wie unterhalb des Duo-Umkehr-Vorgerüstes 1 anhand der Pfeile symbolisch dargestellt ist. Im Anschluß daran wird das vorgeformte Trägerprofil an die Umkehr-Tandemgerüstgruppe 2 abgegeben, die aus dem reversierbaren Universal-Arbeitsgerüst 3, dem gleichfalls reversierbaren Universal-Arbeitsgerüst 4 und dem dazwischen angeordneten Stauchgerüst 5 besteht. Unmittelbar im Anschluß an die Umkehr-Tandemgruppe 2 ist das Sizing-Gerüst 6 angeordnet, welches ebenfalls ein Universalgerüst, jedoch nicht reversierbar ist. Das vorgewalzte Trägerprofil durchläuft, wie an den unterhalb der Umkehr-Tandemgerüstgruppe 2 dargestellten Pfeil erkennbar, zunächst das Universal-Arbeitsgerüst 3, das Stauchgerüst 5 und dann das Universalarbeitsgerüst 4, durchläuft sodann das aufgefahrene Sizing-Gerüst 6 im Durchlaufbetrieb, um in einem Reversierstich erneut in umgekehrter Reihenfolge das Universal-Arbeitsgerüst 4, das Stauchgerüst 5 und das Universal-Arbeitsgerüst 3 zu durchlaufen. Nach nochmaliger Richtungsumkehr durchläuft das Trägerprofil erneut das Universal-Arbeitsgerüst 3, das Stauchgerüst 5 und das Universal-Arbeitsgerüst 4 und wird in dem inzwischen auf Endprofilabmessung angestellten Sizing-Gerüst 6 fertiggewalzt. Wie unterhalb des Stichplanschemas bei 7 erkennbar, werden die Flansche des Trägerprofils in den Universal-Arbeitsgerüsten 3 und 4 nach außen 7a gestellt und als sogenanntes Schmetterlingsprofil gewalzt. Erst im letzten Stich innerhalb des Sizing-Gerüstes 6 werden die nach außen gebogenen Flansche parallel gestellt, so daß das H-Profil 7b entsteht. Beim letzten Durchgang durch die Umkehr-Tandemgerüstgruppe 2 kann der Verformungsstich auf dem zweiten Universal-Arbeitsgerüst 4 entfallen, so daß der vorletzte Stich ein Stauchstich auf dem Stauchgerüst 5 ist.An embodiment of the invention is shown schematically in the drawing and is described below:
The blocks coming from a furnace are pre-rolled in the duo reversing roughing stand 1, for example in seven passes, as is symbolically shown below the duo reversing roughing stand 1 using the arrows. The preformed support profile is then delivered to the reversing tandem scaffold group 2, which consists of the reversible universal work scaffold 3, the reversible one as well Universal work stand 4 and the compression stand 5 arranged between them. Immediately following the reverse tandem group 2, the sizing frame 6 is arranged, which is also a universal frame, but is not reversible. As can be seen from the arrow shown below the reversing tandem scaffolding group 2, the pre-rolled carrier profile first runs through the universal working scaffold 3, the upsetting scaffold 5 and then the universal working scaffold 4, then passes through the sizing scaffold 6 in continuous operation in order to perform a reversing stitch again in reverse order to go through the universal scaffolding 4, the upsetting frame 5 and the universal scaffolding 3. After the direction has been reversed again, the support profile passes through the universal work stand 3, the upsetting stand 5 and the universal work stand 4 and is finished-rolled in the sizing stand 6, which has meanwhile been adjusted to the final profile dimension. As can be seen below the pass schedule scheme at 7, the flanges of the support profile in the universal work stands 3 and 4 are placed outside 7a and rolled as a so-called butterfly profile. Only in the last stitch within the sizing frame 6 are the flanges bent outwards placed in parallel, so that the H profile 7b is created. During the last passage through the reversing tandem scaffold group 2, the deformation stitch on the second universal work scaffold 4 can be omitted, so that the penultimate stitch is a compression stitch on the compression scaffold 5.

Claims (3)

  1. Rolling train for rolling beam sections, consisting of at least one two-high reversing cogging stand (1) and a plurality of subsequent universal stands for working and finish rolling (3, 4, 6), wherein two universal stands (3, 4) and an edging stand (5) are assembled to form a reversing tandem group (2), and the reversible universal stands (3, 4) of the tandem group (2) are equipped with biconical vertical rolls, characterised in that a sizing universal stand (6) is disposed directly after the tandem group (2), which stand (6), being provided for continuous rolling, is equipped with cylindrical vertical rolls.
  2. Method for rolling beam sections in the rolling train according to claim 1, characterised in that the beam section is rolled out with outward pointing flanges in a plurality of consecutive reduction passes, and the outward pointing flanges are made parallel in a final smoothing pass.
  3. Method according to claim 2, characterised in that the smoothing pass is carried out with a reduction of 5 to 20%.
EP92250251A 1991-10-02 1992-09-09 Rolling train for rolling section beams Revoked EP0535767B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4133072 1991-10-02
DE4133072 1991-10-02

Publications (2)

Publication Number Publication Date
EP0535767A1 EP0535767A1 (en) 1993-04-07
EP0535767B1 true EP0535767B1 (en) 1996-02-07

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EP92250251A Revoked EP0535767B1 (en) 1991-10-02 1992-09-09 Rolling train for rolling section beams

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US (1) US5343726A (en)
EP (1) EP0535767B1 (en)
JP (1) JP3265002B2 (en)
DE (1) DE59205292D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5623845A (en) * 1993-07-01 1997-04-29 Bethlehem Steel Corporation Method for producing flanged structural products directly from slabs
DE4415762A1 (en) * 1994-04-29 1995-11-02 Mannesmann Ag Method and device for rolling beams from pre-profiles
DE19628369A1 (en) * 1996-07-13 1998-01-15 Schloemann Siemag Ag Process for rolling finished profiles from a preliminary profile
DE19714216A1 (en) * 1997-04-07 1998-10-08 Schloemann Siemag Ag Rolling mill for rolling flat steel
DE19747656A1 (en) * 1997-10-29 1999-05-12 Schloemann Siemag Ag Rolling system for rolling all types of finished profiles
DE10349950A1 (en) * 2003-10-24 2005-05-25 Sms Demag Ag Rolling mill for warm rolling of metals, including a hot strip roll chain, and blooming and finishing roll chains useful in rolling Al
CN101214494B (en) * 2007-12-29 2010-12-01 莱芜钢铁集团有限公司 Technique for rolling figured steel for magnetic suspension train rail

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812248A (en) * 1928-12-29 1931-06-30 William C Oberg Roll
DE2844433C2 (en) * 1978-10-12 1985-05-09 SMS Schloemann-Siemag AG, 4000 Düsseldorf Rolling train for optionally rolling heavy girder profiles or rails
US4366694A (en) * 1980-09-17 1983-01-04 Morgan Construction Company Compact rolling mill
JPH0753283B2 (en) * 1985-06-04 1995-06-07 住友金属工業株式会社 Continuous rolling method
DE3627729C2 (en) * 1986-08-16 1996-03-07 Schloemann Siemag Ag Molded steel rolling mill
DE3730471A1 (en) * 1987-09-11 1989-03-23 Schloemann Siemag Ag COMPACT ROLLING MILL AND WORKING METHOD FOR ROLLING MOLDED STEEL
US5009094A (en) * 1988-06-27 1991-04-23 Kawasaki Steel Corporation Method of rolling H-shaped steels
JPH0289501A (en) * 1988-09-27 1990-03-29 Kawasaki Steel Corp Rolling mill line

Also Published As

Publication number Publication date
DE59205292D1 (en) 1996-03-21
US5343726A (en) 1994-09-06
JP3265002B2 (en) 2002-03-11
JPH05200402A (en) 1993-08-10
EP0535767A1 (en) 1993-04-07

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