EP0256409B1 - Method of producing sections - Google Patents

Method of producing sections Download PDF

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Publication number
EP0256409B1
EP0256409B1 EP87111183A EP87111183A EP0256409B1 EP 0256409 B1 EP0256409 B1 EP 0256409B1 EP 87111183 A EP87111183 A EP 87111183A EP 87111183 A EP87111183 A EP 87111183A EP 0256409 B1 EP0256409 B1 EP 0256409B1
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EP
European Patent Office
Prior art keywords
rolling mill
universal
stand
reversing
group
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EP87111183A
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German (de)
French (fr)
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EP0256409A2 (en
EP0256409A3 (en
EP0256409B2 (en
Inventor
Georg Engel
Dietmar Kosak
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SMS Siemag AG
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SMS Schloemann Siemag AG
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Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT87111183T priority Critical patent/ATE56895T1/en
Publication of EP0256409A2 publication Critical patent/EP0256409A2/en
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Classifications

    • 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
    • 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
    • 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
    • B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control

Definitions

  • the invention relates to a shaped steel rolling mill with a double reversing roughing stand and universal working and flanging stands, which are combined into reversing tandem groups, and a universal finishing stand provided on the output side.
  • Such a form steel rolling mill corresponding to the genus is known from company publication W 2/3115 de SMS SCHLOE-MANN-SIEMAG AG.
  • a reversing universal stand as well as a universal finishing stand with corresponding flanges-upsetting rolling mills high performance can be achieved with still moderate construction costs, since each pass of the rolling stock through the reversing tandem group results in two universal passes in conjunction with a upsetting stitch .
  • a universal finishing stand with an upstream flange-upsetting stand is connected for the exact completion of the shaped steel with a high surface quality. However, they are not used in reverse operation and therefore only for one pass.
  • the invention is based on the task of creating a high-performance shaped steel rolling mill of the type specified, in which both the space requirement and the effort required are considerably reduced compared to the type determining rolling mill.
  • a conventional shaped steel rolling mill is shown schematically.
  • blocks heated in a pusher furnace are pre-rolled in a reversing roughing stand 1, which is designed as a two-roll stand, in a number of passes, usually between seven and fifteen passes.
  • the preform is passed on to a reversing tandem scaffold group 2, which consists of a universal work scaffold 4, a flange compression scaffold 5 and a universal work scaffold 6.
  • the desired profile is largely approximated by repeated rolling in three or five passes.
  • the rolling stock enters a finished stand group 3, in which the support flanges are brought to the exact desired width again by means of a flange-upsetting stand 7, while the universal finishing stand 8, the final shape of the profile and determines the surface quality of the rolling stock.
  • An infeed roller table 9 leads to the reversing roughing stand 1, a feed roller table 10 is provided between it and the reversing tandem stand group 2, the reversing tandem stand group 2 is followed by a transfer roller table 11, and the finishing stand group 3 is an outfeed roller table 12 downstream, which leads, for example, to a cooling bed.
  • Both the Umkekr roughing stand 1 and the reversing tandem stand group 2 are heavily used for the forming by reversing and thus optimally used. Only the flanging mill 7 and the universal finishing stand 8 are used only for a very small reduction and serve more to secure the desired narrow tolerances of the profile obtained and the surface quality of the rolling stock.
  • the arrangement according to FIG. 2 is used for better utilization of all scaffolding.
  • the roughing from block to rough profile is effected by a reversing roughing stand 1, which allows a high forming capacity due to a large number of passes, for example five to thirteen passes.
  • the following reversing tandem scaffolding group has a universal working scaffold 4, a flange upsetting scaffold 5 and a universal finishing scaffold 8. These three scaffolds are also used to a large extent by reversing at least twice, possibly more often, so that three upsetting stitches and six universal stitches can be achieved with just two reversals. However, the use of this reversing tandem scaffolding group 16 is not driven as high as that of the reversing tandem scaffolding group 2.
  • FIG. 3 A practical embodiment of the compact, high-performance shaped steel rolling mill is shown schematically in FIG. 3.
  • the block-heating pusher furnace 17 with its charging devices is shown as well as a descaler 18 after it.
  • the heated and descaled blocks are fed via an infeed roller table 9 to the reversing roughing stand 1, to which a roller quick-change device 19 is assigned and edging and shifting devices 20 in front and are subordinate.
  • the preliminary profiles are fed to the reversing tandem stand group 16 via a feed roller table 10 which is equipped with a cropping saw 21.
  • the scaffolding 4, 5 and 8 of this group is assigned a scaffolding changing device 22 which allows the scaffolding to be exchanged for refurbished scaffolding, it being possible to install scaffolding intended for duo or universal operation.
  • a downstream run-out roller table 12 leads to a cooling bed 24 via a warm shear 23 that can be used, for example, for dividing billets.
  • the vertical rolls of the universal work stands are slightly double-conical in such a way that their bales taper from their median planes to their roll neck.
  • the profiles rolled here have flange halves slightly bent outwards, so that one speaks of "X" pre-profiles, and only the universal finishing stand contains essentially cylindrical roller balls, so that the flange halves receive a common outer plane and the desired "H “Profile.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Heat Treatment Of Steel (AREA)
  • Laminated Bodies (AREA)
  • Coating With Molten Metal (AREA)
  • Arc Welding In General (AREA)

Abstract

The structural steel rolling mill comprises a reversing two high rough rolling mill, at least one universal working rolling mill and at least one flanging edging rolling mill included in a reversing tandem rolling mill group, and a universal finishing rolling mill at the outlet end of the structural steel rolling mill. The reversing tandem group following the rough rolling mill has a universal working rolling mill, a flanging edging rolling mill and the universal finishing rolling mill. By including the universal finishing rolling mill in the reversing tandem rolling mill group the universal finishing rolling mill also participates in the reversing action and because of that is more effective in shaping than the standard finishing rolling mill so that in practice the special universal finishing rolling mill following the reversing tandem group is omitted as well as the edging rolling mill commonly provided with it and the roller bed located between them. The dimensional accuracy and the surface properties of the rolled product as well as the service life of the rolls of the universal finishing rolling mill are not impaired when the reduction of the universal finishing rolling mill is set smaller than that of the universal working rolling mill.

Description

Die Erfindung betrifft ein Formstahl-Walzwerk mit einem Duo-Umkehr-Vorgerüst und zu Umkehr-Tandemgruppen zusammengefaßten Universal-Arbeits- und Flanschen-Stauchgerüsten, sowie einem ausgangsseitig vorgesehenen Universal-Fertiggerüst.The invention relates to a shaped steel rolling mill with a double reversing roughing stand and universal working and flanging stands, which are combined into reversing tandem groups, and a universal finishing stand provided on the output side.

Ein derartiges, der Gattung entsprechendes Formstahl-Walzwerk ist aus der Firmendruckschrift W 2/3115 de SMS SCHLOE-MANN-SIEMAG AG bekannt. Gegenüber nur ein Vorgerüst, ein Umkehr-Universalgerüst sowie ein Universal-Fertiggerüst mit entsprechenden Flanschen-Stauchgerüsten aufweisenden Walzwerken läßt sich bei noch mäßigem Bauaufwand eine hohe Leistung erzielen, da jeder Durchlauf des Walzgutes durch die Umkehr-Tandemgruppe zwei Universalstiche in Verbindung mit einem Stauchstich ergibt. Zur exakten Fertigstellung des Formstahles mit hoher Oberflächengüte schließt sich ein Universal-Fertiggerüst mit einem vorgeordneten Flanschen-Stauchgerüst an, die jedoch nicht im Umkehrbetrieb und damit nur für jeweils einen Stich benutzt werden.Such a form steel rolling mill corresponding to the genus is known from company publication W 2/3115 de SMS SCHLOE-MANN-SIEMAG AG. Compared to just a roughing stand, a reversing universal stand as well as a universal finishing stand with corresponding flanges-upsetting rolling mills, high performance can be achieved with still moderate construction costs, since each pass of the rolling stock through the reversing tandem group results in two universal passes in conjunction with a upsetting stitch . A universal finishing stand with an upstream flange-upsetting stand is connected for the exact completion of the shaped steel with a high surface quality. However, they are not used in reverse operation and therefore only for one pass.

Die Erfindung geht von der Aufgabe aus, ein eine hohe Leistung aufweisendes Formstahl-Walzwerk der bezeichneten Gattung zu schaffen, bei dem sowohl der Raumbedarf als auch der erforderliche Aufwand gegenüber dem die Gattung bestimmenden Walzwerk erheblich abgesenkt sind.The invention is based on the task of creating a high-performance shaped steel rolling mill of the type specified, in which both the space requirement and the effort required are considerably reduced compared to the type determining rolling mill.

Gelöst wird diese Aufgabe durch die im Patentanspruch 1 gekennzeichneten Merkmale. Gesenkt wird der Aufwand praktisch durch das Entfallen der üblichen Fertiggruppe und deren anteiligen Rollganglängen, indem das Universal-Fertiggerüst das hintere der Universal-Arbeitsgerüste ersetzt und eines der Stauchgerüste entfällt. Damit aber wird das Fertiggerüst, das je Walzgutlänge nur einen Stich geringer Reduktion durchführt und damit nur sehr mäßig genutzt ist, in die Umkehr-Tandemgruppe übernommen und durch Beteiligung am Umkehrbetriebe wesentlich stärker genutzt. Seine speziellen Funktionen vermag es jedoch auch bei dieser stärkeren Nutzung durchzuführen. So entsteht ein Walzwerk, das durch weitgehende Ausnutzung aller Gerüste eine besonders hohe Durchsatzleistung in Anbetracht des erforderlichen Aufwandes ergibt.This object is achieved by the features characterized in claim 1. The effort is practically reduced by eliminating the usual prefabricated group and its proportionate roller table lengths, by replacing the universal finishing stand with the rear of the universal working stands and eliminating one of the upsetting stands. However, this means that the finishing stand, which carries out only one pass with a slight reduction per rolling length and is therefore only used very moderately, is transferred to the reversing tandem group and is used much more by participating in the reversing company. However, it can also perform its special functions with this increased use. The result is a rolling mill that, through extensive use of all stands, results in a particularly high throughput capacity in view of the effort required.

Vorteilhafte und zweckmäßige Weiterbildungen des Gegenstandes des Patentanspruches 1 sind den Unteransprüchen zu entnehmen.Advantageous and expedient developments of the subject matter of claim 1 can be found in the subclaims.

Im einzelnen sind die Merkmale der Erfindung anhand der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit diese darstellenden Zeichnungen erläutert. Es zeigen hierbei:

  • Figur 1 schematisch ein herkömmliches Formstahl-Walzwerk hoher Leistung,
  • Figur 2 in gleichartiger Darstellung ein einen wesentlich abgesenkten Aufwand bedingendes Formstahl-Walzwerk hoher Leistung, und
  • Figur 3 ein Formstahl-Walzwerk in ausführlicherer schematischer Darstellung.
The features of the invention are explained in detail on the basis of the following description of exemplary embodiments in conjunction with these drawings. They show:
  • FIG. 1 schematically shows a conventional high-performance shaped steel rolling mill,
  • FIG. 2 shows in a similar representation a high-performance shaped steel rolling mill, which requires a significantly reduced expenditure, and
  • Figure 3 is a shaped steel rolling mill in a more detailed schematic representation.

In der Fig. 1 ist ein herkömmliches Formstahl-Walzwerk schematisch dargestellt.In Fig. 1, a conventional shaped steel rolling mill is shown schematically.

Beispielsweise in einem nicht dargestellten Stoßofen aufgeheizte Blöcke werden in einem Umkehr-Vorgerüst 1, das als Zwei-Walzen-Gerüst ausgeführt ist, in einer Anzahl von Stichen, meist zwischen sieben und fünfzehn Stichen, vorgewalzt. Der Vorformling wird an eine Umkehr-Tandem-Gerüstgruppe 2 weitergegeben, die aus einem Universal-Arbeitsgerüst 4, einem Flanschen-Stauchgerüst 5 sowie einem Universal-Arbeitsgerüst 6 besteht. Durch wiederholtes Walzen in drei bzw. fünf Durchläufen wird das gewünschte Profil weitgehend angenähert. Nach dem letzten Durchlauf bzw. während des letzten Durchlaufes tritt das Walzgut in eine Fertig-Gerüstgruppe 3 ein, in der mittels eines Flanschen-Stauchgerüstes 7 nochmals die Trägerflansche auf die exakte Sollbreite gebracht werden, während das Universal-Fertiggerüst 8 die Endform des Profiles sowie die Oberflächengüte des Walzgutes bestimmt.For example, blocks heated in a pusher furnace, not shown, are pre-rolled in a reversing roughing stand 1, which is designed as a two-roll stand, in a number of passes, usually between seven and fifteen passes. The preform is passed on to a reversing tandem scaffold group 2, which consists of a universal work scaffold 4, a flange compression scaffold 5 and a universal work scaffold 6. The desired profile is largely approximated by repeated rolling in three or five passes. After the last pass or during the last pass, the rolling stock enters a finished stand group 3, in which the support flanges are brought to the exact desired width again by means of a flange-upsetting stand 7, while the universal finishing stand 8, the final shape of the profile and determines the surface quality of the rolling stock.

Zum Umkehr-Vorgerüst 1 führt ein Einlauf-Rollgang 9, zwischen diesem und der Umkehr-Tandem-Gerüstgruppe 2 ist ein Zuführrollgang 10 vorgesehen, der Umkehr-Tandem-Gerüstgruppe 2 folgt ein Übergabe-Rollgang 11, und der Fertiggerüstgruppe 3 ist ein Auslaufrollgang 12 nachgeordnet, der bspw. zu einem Kühlbett führt.An infeed roller table 9 leads to the reversing roughing stand 1, a feed roller table 10 is provided between it and the reversing tandem stand group 2, the reversing tandem stand group 2 is followed by a transfer roller table 11, and the finishing stand group 3 is an outfeed roller table 12 downstream, which leads, for example, to a cooling bed.

Die Bewegungsrichtungen des Walzgutes bei beispielhaft angenommenen Durchläufen sind durch Pfeile angedeutet; fünf Pfeile 13 betreffen das Vorwalzen, das eigentliche Auswalzen wird durch Pfeile 14 und 15 angedeutet, wobei Pfeil 15 gleichzeitig den Stauch- und Universalstich der Fertig-Gerüstgruppe 3 mit angibt.The directions of movement of the rolling stock in passages assumed by way of example are indicated by arrows; five arrows 13 relate to roughing, the actual rolling out is indicated by arrows 14 and 15, arrow 15 simultaneously indicating the upsetting and universal stitch of the finished stand group 3.

Sowohl das Umkekr-Vorgerüst 1 als auch die Umkehr-Tandem-Gerüstgruppe 2 werden zur Umformung durch das Reversieren stark herangezogen und damit optimal genutzt. Nur das Flanschen-Stauchgerüst 7 und das Universal-Fertiggerüst 8 werden nur für eine sehr geringe Reduktion eingesetzt und dienen mehr der Sicherung gewünscht enger Toleranzen des erzielten Profiles sowie der Oberflächengüte des Walzgutes.Both the Umkekr roughing stand 1 and the reversing tandem stand group 2 are heavily used for the forming by reversing and thus optimally used. Only the flanging mill 7 and the universal finishing stand 8 are used only for a very small reduction and serve more to secure the desired narrow tolerances of the profile obtained and the surface quality of the rolling stock.

Zur besseren Ausnutzung aller Gerüste wird die Anordnung nach Fig. 2 eingesetzt. Auch hier wird das Vorwalzen von Block zum Vorprofil durch ein Umkehr-Vorgerüst 1 bewirkt, das durch eine Vielzahl von Stichen, beispielsweise fünf bis dreizehn Stichen, eine hohe Umformleistung zuläßt. Die folgende Umkehr-Tandem-Gerüstgruppe weist ein Universal-Arbeitsgerüst 4, ein Flanschen-Stauchgerüst 5 sowie ein Universal-Fertiggerüst 8 auf. Diese drei Gerüste werden ebenfalls weitgehend genutzt, indem mindestens zweimal, gegebenenfalls auch öfter, reversiert wird und damit schon bei zweimaligem Reversieren drei Stauchstiche und sechs Universalstiche erreicht werden. Allerdings wird die Nutzung dieser Umkehr-Tandem-Gerüstgruppe 16 nicht so hoch getrieben wie die der Umkehr-Tandem-Gerüstgruppe 2. Es wurde nämlich als vorteilhaft erkannt, das Universal-Arbeitsgerüst 4 jeweils mit der optimalen Reduktion arbeiten zu lassen, das Fertiggerüst 8 aber mit gegenüber der des Universal-Arbeitsgerüstes 4 verringerter Reduktion zu betreiben. Zusätzlich ist es weiterhin möglich, beim letzten Stich die Anstellung des Universal-Fertiggerüstes 8 so zu bewirken, daß eine weitere Senkung der Reduktion auftritt. Durch die Herabsetzung der durch das Universal-Fertiggerüst 8 bewirkten Reduktion gegenüber der optimalen ergibt sich zwar eine etwas verringerte Umformleistung; andererseits wird hierdurch der Verschleiß der Ballenoberfläche des Universal-Fertiggerüstes 8 gegenüber dem des Universal-Arbeitsgerüstes 4 so herabgesetzt, daß auch nach längerer Zeit noch ausreichende Oberflächengüten erhalten sind und damit auch das auslaufende Walzgut, bestimmt durch die Oberflächenbeschaffenheit der Ballen der Walzen des Universal-Fertiggerüstes 8, auch noch nach längerer Standzeit eine ausgezeichnete Beschaffenheit bzw. Güte aufweisen.The arrangement according to FIG. 2 is used for better utilization of all scaffolding. Here, too, the roughing from block to rough profile is effected by a reversing roughing stand 1, which allows a high forming capacity due to a large number of passes, for example five to thirteen passes. The following reversing tandem scaffolding group has a universal working scaffold 4, a flange upsetting scaffold 5 and a universal finishing scaffold 8. These three scaffolds are also used to a large extent by reversing at least twice, possibly more often, so that three upsetting stitches and six universal stitches can be achieved with just two reversals. However, the use of this reversing tandem scaffolding group 16 is not driven as high as that of the reversing tandem scaffolding group 2. It was recognized as advantageous to let the universal working scaffold 4 work with the optimum reduction, but the finishing scaffold 8 with reduced compared to that of the universal work scaffold 4 To operate reduction. In addition, it is still possible to effect the setting of the universal finishing stand 8 at the last stitch so that a further reduction in the reduction occurs. The reduction in the reduction brought about by the universal finishing stand 8 compared to the optimal one results in a somewhat reduced forming capacity; on the other hand, this reduces the wear on the bale surface of the universal finishing stand 8 compared to that of the universal work stand 4 so that sufficient surface qualities are obtained even after a long period of time and thus also the rolling stock that runs out, determined by the surface quality of the bales of the rolls of the universal Finishing stand 8, even after a long standing time, have an excellent quality.

Damit wird gegenüber der bekannten Anordnung nach Fig. 1 praktisch eine Fertiggerüst-Gruppe mit den dieser zugeordneten Rollgängen ebenso eingespart wie der durch diese in Anspruch genommene Platz. Die gesamte umformerische Leistung mag geringfügig abgesenkt sein, da zwar das Universal- Arbeitsgerüst 4 optimal, das Universal-Fertiggerüst 8 aber nur zu einem Teil seiner optimalen Umformleistung genutzt werden. Tatsächlich entfällt aber noch der gesonderte Durchlauf einer gesonderten Fertig-Gerüstgruppe. Es ist zwar auch bekanntgeworden, den Übergabe-Rollgang 11 so kurz auszuführen, daß bei der nach dem letzten Stich des Universal-Arbeitsgerüstes 6 erreichten Länge des Walzgutes dessen Kopf bereits in die Fertig- Gerüstgruppe einläuft, ehe dessen Ende das Universal-Arbeitsgerüst 6 verlassen hat. Zu einer stoßfreien Übergabe ist aber eine weitere Regelanordnung erforderlich, auf die bei erfindungsgemäß ausgebildeten Formstahl-Walzwerken, beispielsweise nach Fig. 2, verzichtet werden kann. Dort ist es nur empfehlenswert, das Universalarbeitsgerüst 4, das Flanschen-Stauchgerüst 5 und das Universal-Fertiggerüst 8 nach dem Prinzip des Minimalzuges zu regeln, um die jeweils auftretenden Beanspruchungen gering zu halten.Compared to the known arrangement according to FIG. 1, a group of finishing stands with the roller tables assigned to them is practically saved, as is the space they occupy. The total forming capacity may be slightly reduced, because although the universal work stand 4 is optimal, the universal finishing stand 8 is only used to a part of its optimal forming capacity. In fact, there is no need to go through a separate finished scaffolding group. It has also become known to make the transfer roller table 11 so short that when the length of the rolling stock reached after the last stitch of the universal work stand 6, its head already runs into the finished stand group before its end leaves the universal work stand 6 Has. For a bumpless transfer, however, a further control arrangement is required, which can be dispensed with in the case of shaped steel rolling mills designed according to the invention, for example according to FIG. 2. There it is only advisable to regulate the universal work scaffold 4, the flange compression scaffold 5 and the universal finishing scaffold 8 according to the principle of the minimum pull in order to keep the stresses that occur in each case low.

Eine praktische Ausführung des kompakten Formstahl-Walzwerkes hoher Leistung is in der Fig. 3 schematisch aufgezeigt.A practical embodiment of the compact, high-performance shaped steel rolling mill is shown schematically in FIG. 3.

Hier ist der Blöcke aufheizende Stoßofen 17 mit seinen Beschikkungsvorrichtungen ebenso dargestellt wie ein ihm nachgeorneter Entzunderer 18. Die aufgeheizten und entzunderten Blöcke werden über einen Einlaufrollgang 9 dem Umkehr-Vorgerüst 1 zugeführt, dem eine Walzen-Schnellwechselvorruchtung 19 zugeordnet und Kant- und Verschiebevorrichtungen 20 vor und nachgeordnet sind. Die Vorprofile werden der Umkehr-Tandem-Gerüstgruppe 16 über einen Zuführrollgang 10 zugebracht, der mit einer Schopfsäge 21 ausgestattet ist. Den Gerüsten 4, 5 und 8 dieser Gruppe ist eine Gerüstwechseleinrichtung 22 zugeordnet, welche den Austausch der Gerüste gegen aufgearbeitete Gerüste erlaubt, wobei wahlweise für den Duo- oder den Universal-Betrieb vorgesehene Gerüste einbaubar sind. Ein nachgeordneter Auslaufrollgang 12 führt über eine beispielsweise zum Teilen von Knüppeln einsetzbare Warmschere 23 zu einem Kühlbett 24.Here, the block-heating pusher furnace 17 with its charging devices is shown as well as a descaler 18 after it. The heated and descaled blocks are fed via an infeed roller table 9 to the reversing roughing stand 1, to which a roller quick-change device 19 is assigned and edging and shifting devices 20 in front and are subordinate. The preliminary profiles are fed to the reversing tandem stand group 16 via a feed roller table 10 which is equipped with a cropping saw 21. The scaffolding 4, 5 and 8 of this group is assigned a scaffolding changing device 22 which allows the scaffolding to be exchanged for refurbished scaffolding, it being possible to install scaffolding intended for duo or universal operation. A downstream run-out roller table 12 leads to a cooling bed 24 via a warm shear 23 that can be used, for example, for dividing billets.

In der Praxis hat es sich gezeigt, daß ein derartiges kompaktes Formstahl-Walzwerk durchaus die Leistung von wesentlich aufwendigeren vorbekannten Walzwerken ergibt, so daß gemäß der Erfindung der zu treibende Aufwand erheblich absenkbar ist. Der Leistungsabfall, der durch die empfehlenswerte Absenkung der Umformleistung des Universal-Fertiggerüstes auftritt, läßt sich im Bedarfsfalle leicht durch ein weiteres zusätzliches Reversieren ausgleichen.In practice, it has been shown that such a compact shaped steel rolling mill definitely gives the performance of much more complex previously known rolling mills, so that, according to the invention, the effort to be driven can be reduced considerably. The drop in performance that occurs due to the recommended reduction in the forming capacity of the universal finishing stand can be easily compensated for by additional reversing if necessary.

Üblicherweise sind in Umkehr-Tandem-Gerüstgruppen die Vertikalwalzen der Universal-Arbeitsgerüste leicht doppelkonisch so ausgeführt, daß ihre Ballen von ihren Mittelebenen zu ihren Walzenzapfen hin sich verjüngen. Die hier gewalzten Profile weisen leicht nach außen abgekantete Flanschhälften auf, so daß von "X"-Vorprofilen gesprochen wird, und erst das Universal-Fertiggerüst enthält im wesentlichen zylindrische Walzenballen, so daß die Flanschhälften eine gemeinsame äußere Ebene erhalten und man das gewünschte "H"-Profil erhält. Es wurde als vorteilhaft erkannt, das Universal-Arbeitsgerüst 4 mit doppelkonischen Walzen und das Universal-Fertiggerüst 8 mit zylinderförmigen Vertikalwalzen auszustatten, so daß beim Reversieren jeweils zwei Stiche in "H"-Form, die folgenden beiden in "X"-Form, und der letzte Stich in "H"-Form gefahren werden. Hierdurch wird zusätzliche eine weitere empfehlenswerte Durchknetung des Flanschwurzelbereiches erzielt.Usually, in reverse tandem stand groups, the vertical rolls of the universal work stands are slightly double-conical in such a way that their bales taper from their median planes to their roll neck. The profiles rolled here have flange halves slightly bent outwards, so that one speaks of "X" pre-profiles, and only the universal finishing stand contains essentially cylindrical roller balls, so that the flange halves receive a common outer plane and the desired "H "Profile. It was recognized as advantageous to equip the universal work stand 4 with double-conical rollers and the universal finishing stand 8 with cylindrical vertical rollers, so that when reversing two stitches each in "H" shape, the following two in "X" shape, and the last stitch in "H" shape. As a result, a further recommended kneading of the flange root area is achieved.

Claims (5)

1. Structural steel rolling mill with a two-high reversing roughing stand (1) and universal working stands (4, 6) and flange-edging stands (5, 7), which are combined into reversing tandem groups (2, 16), as well as a universal finishing stand (8) provided at the exit end, characterised thereby, that the reversing tandem stand group (16) arranged downstream of the reversing roughing stand (1) displays a universal working stand (4), a flange-edging stand (5) and the universal finishing stand (8).
2. Structural steel rolling mill according to claim 1, characterised thereby, that the universal working stand (4) displays vertical rolls with double-conical roll barrels narrowing towards the roll spigots and the universal finishing stand (8) displays vertical rolls with cylindrically shaped barrels.
3. Structural steel rolling mill according to one of the claims 1 and 2, characterised thereby, that the universal stands are exchangeable against two-high stands.
4. Method of operating a structural steel rolling mill according to one of the claims 1 to 3, characterised thereby, that the universal finishing stand (8) is set for a smaller reduction than the universal working stand (4).
5. Method according to claim 4, characterised thereby, that the reduction per pass of the universal finishing stand (8) amounts to 15% to 55% of that of the universal working stand (4).
EP87111183A 1986-08-16 1987-08-03 Method of producing sections Expired - Lifetime EP0256409B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111183T ATE56895T1 (en) 1986-08-16 1987-08-03 SHAPED STEEL ROLLING MILL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3627729 1986-08-16
DE3627729A DE3627729C2 (en) 1986-08-16 1986-08-16 Molded steel rolling mill

Publications (4)

Publication Number Publication Date
EP0256409A2 EP0256409A2 (en) 1988-02-24
EP0256409A3 EP0256409A3 (en) 1988-06-08
EP0256409B1 true EP0256409B1 (en) 1990-09-26
EP0256409B2 EP0256409B2 (en) 1996-09-18

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EP87111183A Expired - Lifetime EP0256409B2 (en) 1986-08-16 1987-08-03 Method of producing sections

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US (1) US4791799A (en)
EP (1) EP0256409B2 (en)
JP (1) JPH0683845B2 (en)
KR (1) KR930004990B1 (en)
CN (1) CN1008796B (en)
AT (1) ATE56895T1 (en)
BR (1) BR8704230A (en)
CA (1) CA1306124C (en)
CZ (1) CZ280934B6 (en)
DE (2) DE3627729C2 (en)
ES (1) ES2017975T5 (en)
RU (1) RU1829972C (en)
SK (1) SK278760B6 (en)
UA (1) UA15926A (en)
ZA (1) ZA874710B (en)

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EP0498733A2 (en) * 1991-02-08 1992-08-12 Sumitomo Metal Industries, Ltd. Method of rolling steel shapes
EP0535767A1 (en) * 1991-10-02 1993-04-07 MANNESMANN Aktiengesellschaft Rolling train for rolling section beams
EP0881004A2 (en) * 1997-05-30 1998-12-02 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling steel shapes
ITMI20092113A1 (en) * 2009-12-01 2011-06-02 Siemens Vai Metals Tech Sas UNIVERSAL REVERSIBLE TRAIN COMPACT FOR THE PRODUCTION OF LARGE MEDIUM PROFILES

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US5664452A (en) * 1909-11-04 1997-09-09 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling finished sections from a preliminary section in a reversing rolling stand arrangement
DE3636478C2 (en) * 1986-10-27 1996-10-31 Schloemann Siemag Ag Process for rolling finished profiles from a preliminary profile
DE3730471A1 (en) * 1987-09-11 1989-03-23 Schloemann Siemag Ag COMPACT ROLLING MILL AND WORKING METHOD FOR ROLLING MOLDED STEEL
DE3830101A1 (en) * 1988-09-05 1990-03-15 Schloemann Siemag Ag METHOD FOR OPERATING A STEEL ROLLING MILL WITH A REFRIGERATION LINE ARRANGED ON A ROLLING LINE FOR THERMOMECHANICAL FINISHED ROLLS AND ROLLING STEEL ROLLING MILL FOR IMPLEMENTING THE METHOD
DE3834587A1 (en) * 1988-10-11 1990-04-12 Schloemann Siemag Ag METHOD AND DEVICE FOR ADJUSTING AND CHANGING THE HEIGHT OF THE CONTINUOUS LEVEL OF THE ROLLING MATERIAL BY ROLLING THE ROLLING DEVICES OF A MOLDING STEEL ROLLER
US5511303A (en) * 1992-05-12 1996-04-30 Tippins Incorporated Intermediate thickness and multiple furnace process line
DE69623208T2 (en) * 1995-03-17 2003-04-17 Sumitomo Metal Industries, Ltd. METHOD AND DEVICE FOR HOT ROLLING H-STEEL BEAMS
DE19622740A1 (en) * 1996-06-07 1997-12-11 Schloemann Siemag Ag Method for operating a roll stand system
DE19628369A1 (en) * 1996-07-13 1998-01-15 Schloemann Siemag Ag Process for rolling finished profiles from a preliminary profile
DE19729991A1 (en) * 1997-07-12 1999-01-14 Schloemann Siemag Ag Process for casting and rolling and a rolling stand arrangement for rolling finished profiles (sheet piling profiles) from a preliminary profile close to the final dimension coming from a continuous casting device
DE19747656A1 (en) * 1997-10-29 1999-05-12 Schloemann Siemag Ag Rolling system for rolling all types of finished profiles
IT1315029B1 (en) * 2000-08-28 2003-01-27 Danieli Off Mecc METHOD AND LINE FOR THE LAMINATION OF RAILS OR OTHER SECTIONS
ITMI20021594A1 (en) * 2002-07-19 2004-01-19 Danieli Off Mecc METHOD AND SYSTEM FOR HOT ROLLING OF RAILS
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
DE102011121512A1 (en) 2011-12-16 2013-06-20 Sms Meer Gmbh angle rolls
RU2620212C1 (en) * 2016-03-10 2017-05-23 Общество с ограниченной ответственностью "Инновационные металлургические технологии" (ООО "ИНМЕТ") Method of manufacturing flange beam and casting and rolling complex for its implementation
CN105689390A (en) * 2016-03-10 2016-06-22 天津市中重科技工程有限公司 Method for rolling section steel semi-continuously by using compact type universal rolling mills
CN110814023A (en) * 2019-11-13 2020-02-21 天津市中重科技工程有限公司 Rolling process of large and super-large section steel in double-reversible finish rolling area
RU2758605C1 (en) * 2020-08-05 2021-11-01 Акционерное общество "ЕВРАЗ Нижнетагильский металлургический комбинат" (АО "ЕВРАЗ НТМК") Method for manufacturing a hot-rolled i-beam from a shaped blank

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498733A2 (en) * 1991-02-08 1992-08-12 Sumitomo Metal Industries, Ltd. Method of rolling steel shapes
EP0498733A3 (en) * 1991-02-08 1992-09-23 Sumitomo Metal Industries, Ltd. Method of rolling steel shapes and apparatus therefor
EP0535767A1 (en) * 1991-10-02 1993-04-07 MANNESMANN Aktiengesellschaft Rolling train for rolling section beams
EP0881004A2 (en) * 1997-05-30 1998-12-02 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling steel shapes
US5966977A (en) * 1997-05-30 1999-10-19 Sms Schloemann-Siemag Aktiengesellschaft Method of rolling steel sections
ITMI20092113A1 (en) * 2009-12-01 2011-06-02 Siemens Vai Metals Tech Sas UNIVERSAL REVERSIBLE TRAIN COMPACT FOR THE PRODUCTION OF LARGE MEDIUM PROFILES
WO2011067055A2 (en) 2009-12-01 2011-06-09 Siemens Vai Metals Technologies S.R.L. Compact reversible universal mill for producing medium-large sections
WO2011067055A3 (en) * 2009-12-01 2011-12-01 Siemens Vai Metals Technologies S.R.L. Compact reversible universal mill for producing medium-large sections

Also Published As

Publication number Publication date
DE3627729C2 (en) 1996-03-07
KR880002585A (en) 1988-05-10
CN87105575A (en) 1988-03-23
KR930004990B1 (en) 1993-06-11
CZ571787A3 (en) 1993-08-11
CA1306124C (en) 1992-08-11
UA15926A (en) 1997-06-30
BR8704230A (en) 1988-04-12
DE3765210D1 (en) 1990-10-31
EP0256409A2 (en) 1988-02-24
EP0256409A3 (en) 1988-06-08
SK571787A3 (en) 1998-02-04
EP0256409B2 (en) 1996-09-18
JPS6352701A (en) 1988-03-05
CN1008796B (en) 1990-07-18
ATE56895T1 (en) 1990-10-15
ES2017975T5 (en) 1996-11-16
CZ280934B6 (en) 1996-05-15
SK278760B6 (en) 1998-02-04
US4791799A (en) 1988-12-20
JPH0683845B2 (en) 1994-10-26
ES2017975B3 (en) 1991-03-16
RU1829972C (en) 1993-07-23
ZA874710B (en) 1988-01-07
DE3627729A1 (en) 1988-02-25

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