EP0053600B1 - Method of producing a heavy plate of steel - Google Patents

Method of producing a heavy plate of steel Download PDF

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Publication number
EP0053600B1
EP0053600B1 EP81890158A EP81890158A EP0053600B1 EP 0053600 B1 EP0053600 B1 EP 0053600B1 EP 81890158 A EP81890158 A EP 81890158A EP 81890158 A EP81890158 A EP 81890158A EP 0053600 B1 EP0053600 B1 EP 0053600B1
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Prior art keywords
slabs
rolling
thickness
roll
steel
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EP81890158A
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German (de)
French (fr)
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EP0053600A1 (en
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Aktiengesellschaft Voest-Alpine
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Voestalpine Stahl Linz GmbH
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Voestalpine AG
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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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling

Definitions

  • the invention relates to a method for producing a heavy plate from steel, in particular with a thickness of more than 50 mm, by hot rolling a primary material in several passes.
  • ESU process electro slag remelting process
  • B.E.S.T. process B.E.S.T. process
  • the invention aims to avoid the disadvantages and difficulties described and has as its object to create a method of the type described above, with which heavy plates, in particular heavy plates of great thickness, can be produced inexpensively and in high-quality, error-free quality.
  • Roll welding is known per se from AT-C-302 223. It was previously used to produce multilayer rolled products, the layers of the rolled product being formed from materials with different chemical compositions.
  • Such multilayer rolled products are clad sheets, usually a base material made of ordinary steel being provided on one or both surfaces with a rust or acid-resistant coating or plating material. During roll cladding, the superimposed layers weld due to the rolling pressure and the high rolling temperature.
  • slabs are used according to the invention which originate from the same steel melt.
  • At least two packages are first formed from at least two slabs each, whereby after the slab packages have been welded to form a roll block, these roll blocks are stacked on top of one another and welded to one another by roll welding and reduced in thickness.
  • the method according to the invention is of particular importance with regard to quality and costs if continuous cast slabs are used as slabs.
  • the field of application for continuous casting slabs is significantly expanded, since the ratio of the thickness of the starting material, i. H. the slab thickness to the sheet thickness can be very small.
  • Continuous cast slabs provided the manufacturing conditions are selected correctly, have a perfect surface and interior quality. Furthermore, they have only a small segregation zone of low intensity. Continuous cast slabs are therefore practically free of internal cracks and poor in inclusions, so that they are particularly advantageous for the process according to the invention.
  • a heavy plate with a thickness of 150 mm is to be made from unalloyed structural steel.
  • Continuous casting slabs 1 with a thickness of 200 mm are available for carrying out the method. To achieve the of Heavy plate required mechanical properties, a fourfold deformation is considered sufficient. Accordingly, three continuous casting slabs 1 are placed one above the other to form a package 2, so that the package 2 has a thickness of approximately 600 mm before being deformed.
  • the slabs 1 come from a strand and from a melt.
  • the slab surfaces 3, which come to lie on one another, are ground before the package is built. If the ground slab surfaces are sufficiently flat, the package can be evacuated (after the edge of the stacked slabs has been welded).
  • the package After the package has been built, the package is rolled down in several passes (indicated by the arrows 4) to a thickness of 150 mm using the hot rolling method.
  • the primary material, the continuous casting slabs 1, have a high degree of purity of non-metallic inclusions, so that after hot rolling there is a homogeneous material with a thickness of 150 mm. This is confirmed by ultrasonic testing.
  • the heavy plate 5 produced in this way can be produced much more cost-effectively than that in the usual way via a block casting.
  • a heavy plate with a thickness of 300 mm is to be produced.
  • the available continuous caster enables the production of 300 mm thick slabs 6, which are to be used as a raw material for this sheet.
  • the thickness ratio of the slab thickness to the thickness of the heavy plate to be produced is therefore one.
  • the sheet should be made from nine continuous cast slabs. in several stages. First, three packages 7 of three slabs each are formed and each package is welded to a roll block 8 by roll welding.
  • the rolling blocks 8 thus formed have a thickness of 250 mm.
  • These three pre-rolled blocks 8 are subsequently combined to form a further approximately 750 mm thick package 9 (roll block package), which is then rolled down to the desired final thickness of 300 mm by roll welding.
  • the usual hot rolling conditions are observed during rolling. All of the superimposed surfaces 10, 11 of the slabs 6 and of the rolling blocks 8 were ground before the package was built.
  • the sheet 12 produced by this method also fulfills all quality requirements.
  • the sheet to be produced is to have a very large thickness or if a larger number of slabs is required due to the desired degree of deformation, it is advantageous to form "sub-packages" and to form each of these sub-packages by roll welding to form a billet and then the billets again in one To stack the “roll block package” on top of one another and to weld them to one another by roll welding, it being possible to start with any number of slabs or to continue working with any number of roll block packages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines Grobbleches aus Stahl, insbesondere mit einer Dicke über 50 mm, durch Warmwalzen eines Vormaterials in mehreren Stichen.The invention relates to a method for producing a heavy plate from steel, in particular with a thickness of more than 50 mm, by hot rolling a primary material in several passes.

Im Stahlbau, insbesondere für den Bau von Kernkraftwerken benötigt man im zunehmenden Maße Grobbleche in großen Dicken, wie z. B. bis zu 300 mm und mehr. Die Herstellung solcher dicker Grobbleche bereitete bisher große Schwierigkeiten. Es ist bekannt, bei der Herstellung von Grobblechen von Gußblöcken geeigneter Größe auszugeben. Um eine einwandfreie Qualität der Fertigbleche zu erzielen, muß bei der Verarbeitung ein Mindestverformungsgrad eingehalten werden; dieser Mindestverformungsgrad wird je nach Qualitätsanforderungen festgelegt. Er liegt in der Regel bei über fünf. Je nach dem Mindestverformungsgrad richtet sich die Blockgröße; man kommt daher bei dicken Grobblechen auf Blockgewichte, die zwischen 15 und 60 t liegen.In steel construction, especially for the construction of nuclear power plants, you increasingly need heavy plates in large thicknesses, such as. B. up to 300 mm and more. The production of such thick plates has previously been very difficult. It is known to issue appropriately sized cast blocks in the manufacture of heavy plates. In order to achieve the perfect quality of the finished sheets, a minimum degree of deformation must be observed during processing; this minimum degree of deformation is determined according to the quality requirements. It is usually over five. The block size depends on the minimum degree of deformation; one therefore comes to block weights of between 15 and 60 t for thick heavy plates.

Konventionell vergossene Blöcke dieser Größe sind bekanntlich sehr inhomogen; der Fußteil neigt zu Einschlußanreicherungen, der Kopfteil ist bis gegen die Blockmitte hin geseigert und lunkerhaft. Diese Eigenschaften großer Blöcke führen dazu, daß im Fertigblech bei der Ultraschallprüfung oft unzulässige Fehler festgestellt werden, die eine Abwertung oder sogar Verschrottung der Bleche notwendig machen. Auch sind die mechanisch-technologischen Eigenschaften dieser Bleche aus großen Blöcken, insbesondere die mechanisch-technologischen Eigenschaften in Dickenrichtung, unzureichend.Conventionally cast blocks of this size are known to be very inhomogeneous; the foot section tends to contain inclusions, the head section is sloped towards the middle of the block and has cavities. These properties of large blocks mean that inadmissible errors are often found in the finished sheet during ultrasonic testing, which necessitate devaluation or even scrapping of the sheets. The mechanical-technological properties of these sheets of large blocks, in particular the mechanical-technological properties in the thickness direction, are also inadequate.

Um diese Schwierigkeiten zu vermeiden, ist es bekannt, Blöcke nach Sonderverfahren herzustellen, die jedoch sehr aufwendig und infolge des hohen Energieverbrauches auch teuer sind. Solche Sonderverfahren sind das Elektroschlakkeumschmelzverfahren (ESU-Verfahren) oder das Böhler-Electro-Slag-Topping-Verfahren (B.E.S.T.-Verfahren).In order to avoid these difficulties, it is known to produce blocks according to special processes, which, however, are very complex and also expensive due to the high energy consumption. Such special processes are the electro slag remelting process (ESU process) or the Böhler electro slag topping process (B.E.S.T. process).

Die Erfindung bezweckt die Vermeidung der geschilderten Nachteile und Schwierigkeiten und stellt sich die Aufgabe, ein Verfahren der eingangs bezeichneten Art zu schaffen, mit dem Grobbleche, insbesondere Grobbleche in großer Dicke, kostengünstig sowie in hochwertiger fehlerfreier Qualität hergestellt werden können.The invention aims to avoid the disadvantages and difficulties described and has as its object to create a method of the type described above, with which heavy plates, in particular heavy plates of great thickness, can be produced inexpensively and in high-quality, error-free quality.

Diese Aufgabe wird erfindungsgemäß durch folgende Merkmale gelöst:

  • a) mindestens zwei Brammen gleicher Stahlqualität und gleicher Breite werden mindestens an je einer Breitseitenfläche so bearbeitet, daß die Voraussetzungen für ein Walzschweißen gegeben sind,
  • b) die Brammen werden unter Kontaktnahme der vorbehandelten Breitseitenflächen aufeinander gelegt,
  • c) die Brammen werden gegen gegenseitiges Verschieben gesichert,
  • d) das so gebildete Paket wird auf Walztemperatur erwärmt und
  • e) anschließend in mehreren Stichen verwalzt.
This object is achieved according to the invention by the following features:
  • a) at least two slabs of the same steel quality and the same width are processed on at least one broad side surface in such a way that the conditions for roll welding are met,
  • b) the slabs are placed one on top of the other by contacting the pretreated broadside surfaces,
  • c) the slabs are secured against mutual movement,
  • d) the package thus formed is heated to the rolling temperature and
  • e) then rolled in several passes.

Das Walzschweißen ist aus der AT-C-302 223 an sich bekannt. Es wurde bisher zur Erzeugung von mehrschichtigen Walzprodukten eingesetzt, wobei die Schichten des Walzproduktes von Werkstoffen mit unterschiedlichen chemischen Zusammensetzungen gebildet sind. Solche mehrschichtige Walzprodukte sind plattierte Bleche, wobei meist ein Grundwerkstoff aus gewöhnlichem Stahl an einer oder an beiden Oberflächen mit einem rost- bzw. säurebeständigen Auflage- bzw. Plattiermaterial versehen wird. Beim Walzplattieren verschweißen die aufeinandergelegten Schichten durch den Walzdruck und durch die hohe Walztemperatur.Roll welding is known per se from AT-C-302 223. It was previously used to produce multilayer rolled products, the layers of the rolled product being formed from materials with different chemical compositions. Such multilayer rolled products are clad sheets, usually a base material made of ordinary steel being provided on one or both surfaces with a rust or acid-resistant coating or plating material. During roll cladding, the superimposed layers weld due to the rolling pressure and the high rolling temperature.

Für besonders hohe Qualitätsansprüche werden erfindungsgemäß Brammen verwendet, die aus der gleichen Stahlschmelze stammen.For particularly high quality requirements, slabs are used according to the invention which originate from the same steel melt.

Gemäß einer Variante des erfindungsgemäßen Verfahrens für Grobbleche in größten Dikken werden zunächst mindestens zwei Pakete aus jeweils mindestens zwei Brammen gebildet, wobei nach Verschweißen der Brammenpakete zu jeweils einem Walzblock diese Walzblöcke übereinander geschichtet und durch Walzschweißen miteinander verschweißt und dickenreduziert werden.According to a variant of the method according to the invention for heavy plates in the largest thicknesses, at least two packages are first formed from at least two slabs each, whereby after the slab packages have been welded to form a roll block, these roll blocks are stacked on top of one another and welded to one another by roll welding and reduced in thickness.

Es kann sich als zweckmäßig erweisen, wenn die Brammen bzw. Walzblöcke nach dem Übereinanderschichten mittels Stabilisierungslaschen gegen gegenseitiges Verrutschen gesichert werden.It can prove expedient if the slabs or rolling blocks are secured against slipping against one another by means of stabilizing tabs after stacking.

Von besonderer Bedeutung hinsichtlich Qualität und Kosten ist das erfindungsgemäße Verfahren, wenn als Brammen Stranggußbrammen verwendet werden. Dadurch wird das Anwendungsgebiet für Stranggußbrammen wesentlich erweitert, da das Verhältnis der Dicke des Vormaterials, d. h. der Brammendicke, zur Blechdikke sehr klein sein kann. Stranggußbrammen weisen, sofern die Herstellungsbedingungen richtig gewählt sind, eine einwandfreie Oberflächen-und Innenbeschaffenheit auf. Weiter haben sie nur eine kleine Seigerungszone von geringer Intensität. Stranggußbrammen sind daher praktisch frei von Innenrissen und arm an Einschlüssen, so daß sie für das erfindungsgemäße Verfahren als besonders vorteilhaft in Frage kommen.The method according to the invention is of particular importance with regard to quality and costs if continuous cast slabs are used as slabs. As a result, the field of application for continuous casting slabs is significantly expanded, since the ratio of the thickness of the starting material, i. H. the slab thickness to the sheet thickness can be very small. Continuous cast slabs, provided the manufacturing conditions are selected correctly, have a perfect surface and interior quality. Furthermore, they have only a small segregation zone of low intensity. Continuous cast slabs are therefore practically free of internal cracks and poor in inclusions, so that they are particularly advantageous for the process according to the invention.

Das erfindungsgemäße Verfahren ist anhand nachstehender, in den Fig. 1 und 2 schematisch dargestellter Beispiele näher erläutert.The method according to the invention is explained in more detail with reference to the following examples, which are shown schematically in FIGS. 1 and 2.

Beispiel 1 (Fig. 1)Example 1 (Fig. 1)

Es soll ein Grobblech mit einer Dicke von 150 mm aus unlegiertem Baustahl hergestellt werden. Zur Durchführung des Verfahrens stehen Stranggußbrammen 1 mit einer Dicke von 200 mm zur Verfügung. Zur Erzielung der vom Grobblech geforderten mechanischen Eigenschaften wird eine vierfache Verformung als ausreichend angesehen. Demnach werden drei Stranggußbrammen 1 zu einem Paket 2 übereinander gelegt, so daß das Paket 2 vor der Verformung eine Dicke von etwa 600 mm aufweist. Die Brammen 1 stammen aus einem Strang und von einer Schmelze. Die Brammenoberflächen 3, die aufeinander zu liegen kommen, werden vor dem Paketbau geschliffen. Wenn die geschliffenen Brammenoberflächen ausreichend plan sind, kann auf eine Evakuierung des Paketes - (nach erfolgter Randverschweißung der übereinander geschichteten Brammen) - verzichtet werden.A heavy plate with a thickness of 150 mm is to be made from unalloyed structural steel. Continuous casting slabs 1 with a thickness of 200 mm are available for carrying out the method. To achieve the of Heavy plate required mechanical properties, a fourfold deformation is considered sufficient. Accordingly, three continuous casting slabs 1 are placed one above the other to form a package 2, so that the package 2 has a thickness of approximately 600 mm before being deformed. The slabs 1 come from a strand and from a melt. The slab surfaces 3, which come to lie on one another, are ground before the package is built. If the ground slab surfaces are sufficiently flat, the package can be evacuated (after the edge of the stacked slabs has been welded).

Nach dem Bau des Paketes wird das Paket in mehreren Stichen (angedeutet durch die Pfeile 4) auf eine Dicke von 150 mm im Warmwalzverfahren heruntergewalzt. Das Vormaterial, die Stranggußbrammen 1, weisen einen hohen Reinheitsgrad an nichtmetallischen Einschlüssen auf, so daß nach dem Warmwalzen ein homogener Werkstoff mit einer Dicke von 150 mm vorliegt. Dies wird durch Ultraschallprüfung bestätigt. Das so erzeugte Grobblech 5 ist wesentlich kostengünstiger herzustellen als das nach dem üblichen Verfahrensweg über einen Blockguß.After the package has been built, the package is rolled down in several passes (indicated by the arrows 4) to a thickness of 150 mm using the hot rolling method. The primary material, the continuous casting slabs 1, have a high degree of purity of non-metallic inclusions, so that after hot rolling there is a homogeneous material with a thickness of 150 mm. This is confirmed by ultrasonic testing. The heavy plate 5 produced in this way can be produced much more cost-effectively than that in the usual way via a block casting.

Beispiel 2 (Fig. 2)Example 2 (Fig. 2)

Es soll ein Grobblech mit einer Dicke von 300 mm hergestellt werden. Die zur Verfügung stehende Stranggießanlage ermöglicht die Erzeugung von 300 mm dicken Brammen 6, die als Vormaterial für dieses Blech verwendet werden sollen. Das Dickenverhältnis Brammendicke zur Dicke des herzustellenden Grobbleches beträgt somit eins. Um eine möglichst hohe Verformung aufzubringen, wird festgelegt, das Blech aus neun Stranggußbrammen zu fertigen, u. zw. in mehreren Stufen. Zunächst werden drei Pakete 7 zu je drei Brammen gebildet und jedes Paket durch Walzschweißen zu einem Walzblock 8 verschweißt. Die so gebildeten Walzblöcke 8 weisen eine Dicke von 250 mm auf. Diese drei vorgewalzten Walzblöcke 8 werden nachfolgend zu einem weiteren etwa 750 mm dicken Paket 9 (Walzblockpaket) zusammengefügt, welches anschließend auf die gewünschte Enddicke von 300 mm durch Walzschweißen heruntergewalzt wird. Bei der Walzung werden übliche Warmwalzbedingungen eingehalten. Sämtliche aufeinanderliegende Oberflächen 10, 11 der Brammen 6 sowie der Walzblöcke 8 wurden vor dem Paketbau geschliffen. Das nach diesem Verfahren hergestellte Blech 12 erfüllt ebenfalls alle gestellten Qualitätsanforderungen.A heavy plate with a thickness of 300 mm is to be produced. The available continuous caster enables the production of 300 mm thick slabs 6, which are to be used as a raw material for this sheet. The thickness ratio of the slab thickness to the thickness of the heavy plate to be produced is therefore one. In order to apply the highest possible deformation, it is specified that the sheet should be made from nine continuous cast slabs. in several stages. First, three packages 7 of three slabs each are formed and each package is welded to a roll block 8 by roll welding. The rolling blocks 8 thus formed have a thickness of 250 mm. These three pre-rolled blocks 8 are subsequently combined to form a further approximately 750 mm thick package 9 (roll block package), which is then rolled down to the desired final thickness of 300 mm by roll welding. The usual hot rolling conditions are observed during rolling. All of the superimposed surfaces 10, 11 of the slabs 6 and of the rolling blocks 8 were ground before the package was built. The sheet 12 produced by this method also fulfills all quality requirements.

Nach dem erfindungsgemäßen Verfahren werden so viele Brammen übereinander geschichtet, bis die zur Erzielung des gewünschten Verformungsgrades notwendige Dicke des Paketes erreicht ist. Bei Verwendung von Stranggußbrammen, die bekanntlich eine sehr plane Oberfläche aufweisen und beim Walzen daher einwandfrei verschweißten, sind Sondermaßnahmen, wie Verschweißen an den Kanten und/ oder Evakuieren des Paketes, meist nicht erforderlich; es genügt, die zur Anlage gelangenden Seiten der Brammen zu schleifen und z. B. durch Stabilisierungslaschen 13 (in Fig. 1 strichliert eingezeichnet) gegen Verrutschen zu schützen. Grundsätzlich kann jedoch jede Technologie, die beim Plattieren durch Walzschleifen angewendet wird, praktiziert werden. Sollten die Brammen ein abnormales Oberflächenprofil aufweisen, z. B. stark bombiert sein, wodurch ein einwandfreies Verschweißen nicht gewährleistet ist, ist es zweckmäßig, die einzelnen Brammen vorzuverformen und erst dann zu einem Paket zu schichten.According to the method according to the invention, so many slabs are stacked on top of one another until the thickness of the package required to achieve the desired degree of deformation is reached. When using continuous casting slabs, which are known to have a very flat surface and are therefore welded perfectly during rolling, special measures, such as welding at the edges and / or evacuation of the package, are usually not necessary; it is sufficient to grind the sides of the slabs coming into contact and z. B. by stabilizing tabs 13 (shown in dashed lines in Fig. 1) to protect against slipping. In principle, however, any technology used in plating by roll grinding can be practiced. If the slabs have an abnormal surface profile, e.g. B. be strongly cambered, whereby a perfect welding is not guaranteed, it is advisable to pre-deform the individual slabs and only then to layer them into a package.

Wenn das zu erzeugende Blech eine sehr große Dicke aufweisen soll oder wegen des gewünschten Verformungsgrades eine größere Anzahl von Brammen benötigt wird, ist esvorteilhaft, »Teilpakete« zu bilden und jedes dieser Teilpakete durch Walzschweißen zu einem Walzblock zu verformen und anschließend die Walzblöcke wiederum zu einem »Walzblockpaket« übereinander zu schichten und durch Walzschweißen miteinander zu verschweißen, wobei von einer beliebigen Anzahl von Brammen ausgegangen bzw. mit einer beliebigen Anzahl von Walzblockpaketen weitergearbeitet werden kann.If the sheet to be produced is to have a very large thickness or if a larger number of slabs is required due to the desired degree of deformation, it is advantageous to form "sub-packages" and to form each of these sub-packages by roll welding to form a billet and then the billets again in one To stack the “roll block package” on top of one another and to weld them to one another by roll welding, it being possible to start with any number of slabs or to continue working with any number of roll block packages.

Claims (5)

1. A method of producing a plate (5, 12) of steel, in particular having a thickness of more than 50 mm, by hot-rolling a prematerial (1, 6) in several passes, characterized by the following characteristic features:
a) at least two slabs (1, 6) of the same steel quality and of equal width are machined on at least one broad side face (3) each in a manner that the conditions for roll-bonding are met,
b) the slabs (1, 6) are superposed with the pretreated broad side faces (3) coming into contact,
c) the slabs (1, 6) are secured against displacement relative to one another,
d) the thus formed pack (2, 7) is heated to rolling temperature and
e) subsequently is rolled in several passes.
2. A method according to claim 1, characterized in that slabs (1, 6) that are derived from the same steel melt are used.
3. A method according to claim 1 or 2, characterized in that initially at least two packs (7) are each formed of at least two slabs (6), wherein, after welding of the slab packs (7) into one rolling ingot (8), these rolling ingots (8) are superposed and are welded together by roll-bonding and reduced in thickness.
4. A method according to claims 1 to 3, characterized in that the slabs (1), or rolling ingots (8), after having been superposed, are secured against displacement relative to one another by means of stabilizing brackets (13).
5. A method according to claims 1 to 4, characterized in that continuously cast slabs are used as slabs (1, 6).
EP81890158A 1980-12-02 1981-10-01 Method of producing a heavy plate of steel Expired EP0053600B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0587980A AT374704B (en) 1980-12-02 1980-12-02 METHOD FOR MANUFACTURING A STEEL PANEL
AT5879/80 1980-12-02

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EP0053600A1 EP0053600A1 (en) 1982-06-09
EP0053600B1 true EP0053600B1 (en) 1984-09-19

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JP (1) JPS57118879A (en)
AT (1) AT374704B (en)
DE (1) DE3166190D1 (en)

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DE102015110361B4 (en) * 2015-06-26 2019-12-24 Thyssenkrupp Ag Process for producing a composite material in a rolling mill and use of the rolling mill
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WO2018091572A1 (en) 2016-11-18 2018-05-24 Sms Group Gmbh Method and device for producing a continuous strip-shaped composite material
DE102017220416A1 (en) 2016-11-18 2018-05-24 Sms Group Gmbh Method and device for producing a continuous band-shaped composite material
DE102017220435A1 (en) 2016-11-18 2018-05-24 Sms Group Gmbh Method and device for producing a continuous band-shaped composite material
DE102017220434A1 (en) 2016-11-18 2018-05-24 Sms Group Gmbh Method and device for producing a continuous band-shaped composite material
WO2018091562A1 (en) 2016-11-18 2018-05-24 Sms Group Gmbh Method and device for producing a continuous strip-shaped composite material
WO2018091571A1 (en) 2016-11-18 2018-05-24 Sms Group Gmbh Method and device for producing a continuous strip-shaped composite material
US11400542B2 (en) 2016-11-18 2022-08-02 Sms Group Gmbh Method and device for producing a continuous strip-shaped composite material
EP3725450A2 (en) 2019-04-18 2020-10-21 SMS Group GmbH Method and device for producing a composite material with multiple coatings

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DE3166190D1 (en) 1984-10-25
US4684053A (en) 1987-08-04
AT374704B (en) 1984-05-25
US4493452A (en) 1985-01-15
EP0053600A1 (en) 1982-06-09
ATA587980A (en) 1983-10-15
JPS57118879A (en) 1982-07-23

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