WO2006040080A1 - Method for producing metal sheets from a magnesium melt - Google Patents

Method for producing metal sheets from a magnesium melt Download PDF

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Publication number
WO2006040080A1
WO2006040080A1 PCT/EP2005/010801 EP2005010801W WO2006040080A1 WO 2006040080 A1 WO2006040080 A1 WO 2006040080A1 EP 2005010801 W EP2005010801 W EP 2005010801W WO 2006040080 A1 WO2006040080 A1 WO 2006040080A1
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WO
WIPO (PCT)
Prior art keywords
rolling
sheets
strip
metal sheets
magnesium
Prior art date
Application number
PCT/EP2005/010801
Other languages
German (de)
French (fr)
Inventor
Nguyen Duc Dr. Cuong
Bernhard Dr.-Ing. Engl
Original Assignee
Thyssenkrupp Steel Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssenkrupp Steel Ag filed Critical Thyssenkrupp Steel Ag
Priority to PL05796633T priority Critical patent/PL1802405T3/en
Priority to AU2005293768A priority patent/AU2005293768B2/en
Priority to CA002581780A priority patent/CA2581780A1/en
Priority to DE502005004356T priority patent/DE502005004356D1/en
Priority to US11/576,805 priority patent/US20080245448A1/en
Priority to JP2007535094A priority patent/JP5046944B2/en
Priority to EP05796633A priority patent/EP1802405B1/en
Publication of WO2006040080A1 publication Critical patent/WO2006040080A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/30—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 plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/36—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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0021—Cutting or shearing the product in the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/002—Piling, unpiling, unscrambling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
    • B21B39/32—Devices specially adapted for turning sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the invention relates to a method for producing sheets from a magnesium melt.
  • Magnesium flat products are increasingly used in the field of bodywork and comparable fields of application for the production of particularly lightweight and dimensionally stable components.
  • An advantageous way of producing strips with a certain thickness is the so-called “casting rolling", in which a molten metal is cast into a strip with a near final thickness and immediately hot rolled inline to form a hot strip. The resulting cast and hot rolled strips are then further processed. In this case, further rolling steps or other forming operations and annealing treatments may be included (DE 100 52 423 C1).
  • the width of the strips produced in this way is limited by the width of the nip of the rolling stand used for their forming.
  • By slitting only so-called “slit strips” can be divided from these bands, the width of which is smaller than the width of the starting product.
  • users of such flat products are not only required to have a wide spectrum Different thicknesses, but also adapted to the particular purpose widths are required that go beyond the producible on conventional rolling mills widths.
  • the object of the invention to provide a method that allows the production of magnesium sheets of greater width and good mechanical properties in a simple manner.
  • a cast strip is first of all produced in a manner known per se from a magnesium melt such that it has a certain width limited by the aggregates used for rolling. Then be separated from this band sheets. These sheets are then rolled, if necessary, in several passes across the longitudinal direction of the band rolling, until on the one hand the desired width and on the other hand the required thickness are achieved. "Direction of rolling of the sheets” here always means the orientation with which the sheet enters the next roll pass.
  • the immediately after the division of the cast and rolled strip still aligned in the longitudinal direction of the strip sheet is, for example, rotated about an axis perpendicular to the sheet surface axis that its originally aligned equal to the longitudinal direction of the belt direction is now aligned transversely to this. In this way, it is particularly easy to produce very broad panels which correspond to the demands made by the end-user.
  • the method according to the invention should be carried out so that the sheets obtained are low in segregation.
  • Typical initial rolling temperatures are in the range of 200 0 C to 450 0 C.
  • the rolling of the sheets may, if necessary, be carried out in several rolling passes in order to produce particularly thin, wide sheets. If a multi-stage rolling is performed, then it is expedient if the sheets are heated in a manner known per se between each rolling step to a rolling start temperature.
  • Fig. 1 shows a production line for producing wide sheets of magnesium melt in a schematic representation in plan view
  • Diag. 1 the yield strength RpO, 2 and tensile strength for each detected in the longitudinal, transverse and diagonal direction a longitudinally and in a manner inventive querkaltgewalztes in a conventional manner magnesium strip.
  • the production line 1 comprises a melt vessel 2 from which magnesium melt S is continuously conveyed via a nozzle 3 into the pouring gap (not shown) of a two-roll strip casting machine 4.
  • the strip casting machine 4 has, in a manner known per se, two casting rolls which are arranged vertically one above the other and are not shown here, which delimit between them the horizontally extending casting gap.
  • the cast magnesium strip M emerging from the strip casting machine 4 is conveyed, in a continuous operation on the strip casting, into a roll stand 5 standing inline with the strip casting machine 4, in which it is rolled to form a hot strip W of, for example, 6.5 mm thickness.
  • hot strip W 6 sheets B are separated by means of a standing in the conveying direction F inline behind the rolling stand 5 Quere scissors. If necessary, the hot strip W is trimmed in front of the dividing shear 6 by a trimming device, not shown, on its longitudinal sides.
  • the sheets B separated from the hot strip W have a rectangular shape in plan view whose longitudinal sides LS directed in the longitudinal direction L of the magnesium strip M are narrower than their transverse sides QS oriented transversely to the longitudinal direction L of the hot strip W. Their width is equal to the width b of the hot strip W.
  • the pivoting arm 8 is arranged pivotable about a vertical axis 10 so that it rotates at a 90 ° rotation about the vertical axis 10, each detected by him sheet B by 90 ° about a normal to the top of the sheet B aligned axis 11.
  • the stacking device 9 places the sheets B on a sheet stack 12. In this position, the longitudinal sides LS of the sheets B are aligned transversely to the longitudinal direction L of the hot strip W.
  • a transport device 13 conveys in each case one of the stacked sheets B to a cold rolling mill 14 such that it first enters the non-illustrated roll gap of the cold rolling mill 14 with its one short longitudinal side LS1.
  • the respective sheet B is rolled in this way in a rolling direction Q which is transversely, i.e. offset by 90 °, is aligned with the longitudinal direction L, with the hot-rolled W was originally rolled.
  • a 0.9 mm thick sheet Bf is finished rolled from the respective 6.5 mm thick sheet B, whose length LBf is substantially greater than the width B of the hot strip W.
  • the finished, final annealed sheets Bf have good mechanical properties.
  • the yield strengths R p o, 2 were in the range of 165-170 N / mm 2
  • elongations A 50 in the range of 15-20%.
  • Diag. Figure 1 compares the R m , R p o, 2 and A 50 values for longitudinal and transverse rolled sheets, with the values shown as lines representing the longitudinally rolled material and the rectangles, points and stars representing the measured values for cross rolled material.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention relates to a method for producing metal sheets (B) from a magnesium melt (S), which comprises the following steps: producing the magnesium melt (S), casting the magnesium melt to a cast strip (M), immediately after casting, strip-rolling the cast strip (M) to a rolled strip (W), cross-cutting (6) the rolled strip (W) to metal sheets (B), rolling (14) the metal sheets (B) to a final thickness, the rolling of the metal sheets (B) being carried out, in relation to the metal sheets (B), in a direction (Q) at an angle to the rolling direction (L) of the strip rolling, said direction being maintained during the entire rolling of the metal sheets (B). The invention provides a simple method for producing very wide sheets that meet the requirements of the ultimate user.

Description

VERFAHREN ZUM HERSTELLEN VON BLECHEN AUS EINER METHOD FOR PRODUCING PANELS FROM ONE
MAGNESIUMSCHMELZEMAGNESIUM MELT
Die Erfindung betrifft ein Verfahren zum Herstellen von Blechen aus einer Magnesiumschmelze.The invention relates to a method for producing sheets from a magnesium melt.
Magnesiumflachprodukte werden zunehmend im Bereich des Karosseriebaus und vergleichbaren Anwendungsgebieten für die Erzeugung von besonders leichten und gleichzeitig formstabilen Bauteilen eingesetzt.Magnesium flat products are increasingly used in the field of bodywork and comparable fields of application for the production of particularly lightweight and dimensionally stable components.
Eine vorteilhafte Art und Weise der Herstellung von Bändern mit bestimmter Dicke stellt das so genannte "Gießenwalzen" dar, bei dem eine Metallschmelze zu einem Band mit einer endabmessungsnahen Dicke vergossen und unmittelbar anschließend inline zu einem Warmband warmgewalzt wird. Die erhaltenen gegossenen und warmgewalzten Bänder werden daraufhin weiter prozessiert. Dabei können weitere Walzschritte oder andere Umformoperationen sowie Glühbehandlungen eingeschlossen sein (DE 100 52 423 Cl) .An advantageous way of producing strips with a certain thickness is the so-called "casting rolling", in which a molten metal is cast into a strip with a near final thickness and immediately hot rolled inline to form a hot strip. The resulting cast and hot rolled strips are then further processed. In this case, further rolling steps or other forming operations and annealing treatments may be included (DE 100 52 423 C1).
Die Breite der auf diese Weise erzeugten Bänder ist durch die Breite des Walzspalts des zu ihrer Umformung eingesetzten Walzgerüstes beschränkt. Durch Längsteilen können aus diesen Bändern lediglich so genannte "Spaltbänder" abgeteilt werden, deren Breite kleiner ist als die Breite des Ausgangsproduktes. Allerdings besteht seitens der Anwender von derartigen Flachprodukten nicht nur die Forderung nach einem weiten Spektrum unterschiedlichster Dicken, sondern es werden auch an den jeweiligen Verwendungszweck angepasste Breiten verlangt, die über die auf konventionellen Walzstraßen erzeugbaren Breiten hinausgehen.The width of the strips produced in this way is limited by the width of the nip of the rolling stand used for their forming. By slitting only so-called "slit strips" can be divided from these bands, the width of which is smaller than the width of the starting product. However, users of such flat products are not only required to have a wide spectrum Different thicknesses, but also adapted to the particular purpose widths are required that go beyond the producible on conventional rolling mills widths.
Ausgehend von dem voranstehend erläuterten Stand der Technik bestand die Aufgabe der Erfindung darin, ein Verfahren anzugeben, das auf einfache Weise die Herstellung von Magnesiumblechen größerer Breite und guten mechanischen Eigenschaften ermöglicht.Starting from the above-described prior art, the object of the invention to provide a method that allows the production of magnesium sheets of greater width and good mechanical properties in a simple manner.
Diese Aufgabe ist durch ein Verfahren der eingangs angegebenen Art gelöst worden, bei dem zur Erzeugung von Magnesiumblechen folgende Arbeitsschritte durchlaufen werden:This object has been achieved by a method of the type specified, in which the following steps are carried out for the production of magnesium sheets:
- Erschmelzen der Magnesiumschmelze,Melting the molten magnesium,
- Vergießen der Magnesiumschmelze zu einem gegossenen Band,Casting the molten magnesium into a cast strip,
- im unmittelbaren Anschluss an das Vergießen erfolgendes Bandwalzen des gegossenen Bandes zu einem gewalzten Band,immediately following the casting, strip rolling of the cast strip into a rolled strip,
- Querteilen des gewalzten Bandes zu Blechen,- dividing the rolled strip into sheets,
- Walzen der Bleche auf eine Enddicke, wobei das Walzen der Bleche bezogen auf die Bleche in einer quer zur Walzrichtung des Bandwalzens ausgerichteten Richtung durchgeführt wird, die während des gesamten Walzens der Bleche beibehalten wird. Gemäß der Erfindung wird zunächst in an sich bekannter Weise aus einer Magnesiumschmelze ein gegossenes Band erzeugt, dass eine bestimmte, durch die zum Walzen eingesetzten Aggregate begrenzte Breite besitzt. Anschließend werden von diesem Band Bleche abgeteilt. Diese Bleche werden anschließend quer zur Längsrichtung des Bandwalzens erforderlichenfalls in mehreren Stichen so lange gewalzt, bis einerseits die gewünschte Breite und andererseits die geforderte Dicke erreicht sind. "Richtung des Walzens der Bleche" meint hier stets die Ausrichtung, mit der das Blech in den nächstfolgenden Walzstich eintritt. D.h., das unmittelbar nach dem Abteilen von dem gegossenen und gewalzten Band noch in Längsrichtung des Bandes ausgerichtete Blech wird beispielsweise so um eine senkrecht auf der Blechoberfläche stehende Achse gedreht, dass seine ursprünglich gleich der Längsrichtung des Bandes ausgerichtete Richtung nun quer zu dieser ausgerichtet ist. Auf diese Weise lassen sich technisch besonders einfach sehr breite Tafeln erzeugen, die den vom Endverwerter aufgestellten Forderungen entsprechen.- Rolling of the sheets to a final thickness, wherein the rolling of the sheets is carried out relative to the sheets in a direction transverse to the rolling direction of the strip rolling direction, which is maintained during the entire rolling of the sheets. According to the invention, a cast strip is first of all produced in a manner known per se from a magnesium melt such that it has a certain width limited by the aggregates used for rolling. Then be separated from this band sheets. These sheets are then rolled, if necessary, in several passes across the longitudinal direction of the band rolling, until on the one hand the desired width and on the other hand the required thickness are achieved. "Direction of rolling of the sheets" here always means the orientation with which the sheet enters the next roll pass. That is, the immediately after the division of the cast and rolled strip still aligned in the longitudinal direction of the strip sheet is, for example, rotated about an axis perpendicular to the sheet surface axis that its originally aligned equal to the longitudinal direction of the belt direction is now aligned transversely to this. In this way, it is particularly easy to produce very broad panels which correspond to the demands made by the end-user.
Es zeigt sich, dass erfindungsgemäß erzeugte Bleche gute mechanische Eigenschaften und eine für ihreIt turns out that sheets produced according to the invention have good mechanical properties and one for their
Weiterverarbeitung günstige Gefügestruktur aufweisen. Dabei sind die Abweichungen zwischen den in Längs-, Quer- und Diagonalrichtung der erfindungsgemäß erzeugten Bleche ermittelten Eigenschaften gering. Neben dem Vorteil, ein Blech großer Breite herstellen zu können, stellen sich bei erfindungsgemäßer Vorgehensweise somit bereits die positiven Effekte ein, die für ein mit mehrfachen Richtungswechseln erfolgendes Walzen von Magnesiumblechen bereits in der Fachliteratur beschrieben sind (Beck, Adolf "Magnesium und seine Legierungen", Springer Bin, 2. Auflage 2001, Kapitel: Technologie des Walzens) . Überraschend ist dabei, dass die erzielten Eigenschaftsverbesserungen bei erfindungsgemäßer Weise des Walzens eintreten, obwohl die vom Band abgetrennten Bleche lediglich einmal so bewegt werden, dass ihre Ausrichtung beim Walzen von der Ausrichtung abweicht, mit der das Band gewalzt worden ist.Further processing have favorable microstructure. The deviations between the properties determined in the longitudinal, transverse and diagonal directions of the sheets produced according to the invention are slight. In addition to the advantage of being able to produce a sheet of large width, the positive effects which are already described in the technical literature for a rolling of magnesium sheets with multiple changes of direction are already established in the procedure according to the invention (Beck, Adolf "Magnesium and its alloys"). , Springer Bin, 2nd edition 2001, chapter: Technology of rolling). It is surprising in that the property improvements achieved in the inventive manner of rolling occur, although the separated from the strip sheets are only once moved so that their orientation during rolling from the orientation, with which the strip has been rolled.
Um eine besonders gute Verformbarkeit und gleichmäßige Verteilung der guten mechanischen Eigenschaften erfindungsgemäß erzeugter Bleche zu sichern, sollte das erfindungsgemäße Verfahren so durchgeführt werden, dass die erhaltenen Bleche seigerungsarm sind. Dazu kann es zweckmäßig sein, die Bleche auf eine insbesondere oberhalb von 200 0C liegende Walzanfangstemperatur zu erwärmen, wenn die Temperatur der Bleche unter 200 0C liegt. Typische Walzanfangstemperaturen liegen dabei im Bereich von 200 0C bis 450 0C.In order to ensure a particularly good deformability and even distribution of the good mechanical properties of sheets produced according to the invention, the method according to the invention should be carried out so that the sheets obtained are low in segregation. For this purpose, it may be expedient to heat the sheets to a particular above 200 0 C lying roll start temperature when the temperature of the sheets is below 200 0 C. Typical initial rolling temperatures are in the range of 200 0 C to 450 0 C.
Das Walzen der Bleche kann erforderlichenfalls in mehreren Walzstichen durchgeführt werden, um besonders dünne, breite Bleche zu erzeugen. Wird ein mehrstufiges Walzen durchgeführt, so ist es zweckmäßig, wenn die Bleche in an sich bekannter Weise zwischen jedem Walzschritt auf eine Walzanfangstemperatur erwärmt werden.The rolling of the sheets may, if necessary, be carried out in several rolling passes in order to produce particularly thin, wide sheets. If a multi-stage rolling is performed, then it is expedient if the sheets are heated in a manner known per se between each rolling step to a rolling start temperature.
Nachfolgend wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen:The invention will be explained in more detail with reference to a drawing illustrating an exemplary embodiment. Show it:
Fig. 1 eine Fertigungslinie zur Herstellung breiter Bleche aus einer Magnesiumschmelze in schematischer Darstellung in Draufsicht;Fig. 1 shows a production line for producing wide sheets of magnesium melt in a schematic representation in plan view;
Diag. 1 die jeweils in Längs-, Quer- und Diagonalrichtung erfasste Dehngrenze RpO, 2 und Zugfestigkeit für ein in konventioneller Weise längs- und ein in erfindungsgemäßer Weise querkaltgewalztes Magnesiumband.Diag. 1 the yield strength RpO, 2 and tensile strength for each detected in the longitudinal, transverse and diagonal direction a longitudinally and in a manner inventive querkaltgewalztes in a conventional manner magnesium strip.
Die Fertigungslinie 1 umfasst ein Schmelzengefäß 2, aus dem über eine Düse 3 kontinuierlich Magnesiumschmelze S in den nicht gezeigten Gießspalt einer Zwei-Rollen- Bandgießmaschine 4 gefördert wird.The production line 1 comprises a melt vessel 2 from which magnesium melt S is continuously conveyed via a nozzle 3 into the pouring gap (not shown) of a two-roll strip casting machine 4.
Die Bandgießmaschine 4 weist in an sich bekannter Weise zwei vertikal übereinander angeordnete, hier nicht dargestellte Gießwalzen auf, die zwischen sich den horizontal verlaufenden Gießspalt begrenzen.The strip casting machine 4 has, in a manner known per se, two casting rolls which are arranged vertically one above the other and are not shown here, which delimit between them the horizontally extending casting gap.
Das aus der Bandgießmaschine 4 austretende gegossene Magnesiumband M wird in einem kontinuierlich auf das Bandgießen folgenden Vorgang in ein inline mit der Bandgießmaschine 4 stehendes Walzgerüst 5 gefördert, in dem es zu einem Warmband W von beispielsweise 6, 5 mm Dicke gewalzt wird. Von dem aus dem Walzgerüst 5 austretenden Warmband W werden mittels einer in Förderrichtung F inline hinter dem Walzgerüst 5 stehenden Querteilschere 6 Bleche B abgetrennt. Erforderlichenfalls wird das Warmband W vor der Querteilschere 6 durch eine nicht dargestellte Besäumeinrichtung an seinen Längsseiten besäumt.The cast magnesium strip M emerging from the strip casting machine 4 is conveyed, in a continuous operation on the strip casting, into a roll stand 5 standing inline with the strip casting machine 4, in which it is rolled to form a hot strip W of, for example, 6.5 mm thickness. Of the emerging from the rolling mill 5 hot strip W 6 sheets B are separated by means of a standing in the conveying direction F inline behind the rolling stand 5 Quere scissors. If necessary, the hot strip W is trimmed in front of the dividing shear 6 by a trimming device, not shown, on its longitudinal sides.
Die vom Warmband W abgetrennten Bleche B weisen eine in Draufsicht rechtwinklige Form auf, deren in Längsrichtung L des Magnesiumbandes M gerichteten Längsseiten LS schmaler sind als ihre quer zur Längsrichtung L des Warmbands W ausgerichteten Querseiten QS. Deren Breite ist gleich der Breite b des Warmbands W. Von der Querteilschere 6 gelangen die Bleche B auf eine Förderstrecke 7, an deren Ende sie vom Schwenkarm 8 einer Stapeleinrichtung 9 ergriffen werden. Der Schwenkarm 8 ist um eine Vertikalachse 10 so schwenkbar angeordnet, dass er bei einer 90° Drehung um die Vertikalachse 10 das jeweils von ihm erfasste Blech B um 90° um eine normal zur Oberseite des Blechs B ausgerichtete Achse 11 dreht.The sheets B separated from the hot strip W have a rectangular shape in plan view whose longitudinal sides LS directed in the longitudinal direction L of the magnesium strip M are narrower than their transverse sides QS oriented transversely to the longitudinal direction L of the hot strip W. Their width is equal to the width b of the hot strip W. From the transverse dividing shear 6, the sheets B reach a conveying path 7, at the end of which they are gripped by the pivot arm 8 of a stacking device 9. The pivoting arm 8 is arranged pivotable about a vertical axis 10 so that it rotates at a 90 ° rotation about the vertical axis 10, each detected by him sheet B by 90 ° about a normal to the top of the sheet B aligned axis 11.
Die Stapeleinrichtung 9 legt die Bleche B auf einen Blechstapel 12 ab. In dieser Stellung sind die Längsseiten LS der Bleche B quer zur Längsrichtung L des Warmbands W ausgerichtet .The stacking device 9 places the sheets B on a sheet stack 12. In this position, the longitudinal sides LS of the sheets B are aligned transversely to the longitudinal direction L of the hot strip W.
Eine Transporteinrichtung 13 fördert jeweils eines der aufgestapelten Bleche B so zu einem Kaltwalzwerk 14, dass es mit seiner einen kurzen Längsseite LSl zuerst in den nicht dargestellten Walzspalt des Kaltwalzwerks 14 eintritt. Das jeweilige Blech B wird auf diese Weise in einer Walzrichtung Q gewalzt, die quer, d.h. um 90° versetzt, zur Längsrichtung L ausgerichtet ist, mit der das Warmband W ursprünglich gewalzt worden ist. Durch 6-faches Kaltwalzen mit einer Zwischenerwärmung in einem Ofen 15 wird aus dem jeweils 6,5 mm dicken Blech B ein 0,9 mm dickes Blech Bf fertig gewalzt, dessen Länge LBf um ein wesentliches größer ist als die Breite B des Warmbands W.A transport device 13 conveys in each case one of the stacked sheets B to a cold rolling mill 14 such that it first enters the non-illustrated roll gap of the cold rolling mill 14 with its one short longitudinal side LS1. The respective sheet B is rolled in this way in a rolling direction Q which is transversely, i.e. offset by 90 °, is aligned with the longitudinal direction L, with the hot-rolled W was originally rolled. By cold rolling six times with an intermediate heating in a furnace 15, a 0.9 mm thick sheet Bf is finished rolled from the respective 6.5 mm thick sheet B, whose length LBf is substantially greater than the width B of the hot strip W.
Abschließend werden die erhaltenen Bleche Bf bei 330 - 360 0C schlussgeglüht.Finally, the sheets obtained Bf at 330 - 360 0 C to finish annealing.
Die fertigen, schlussgeglühten Bleche Bf weisen gute mechanische Eigenschaften auf. So lagen bei den hier untersuchten Magnesiumblechen Bf die Dehngrenzen Rpo,2 im Bereich von 165 - 170 N/mm2, die Zugfestigkeiten Rm im Bereich von 250 - 270 N/mm2 und die Dehnungen A50 im Bereich von 15 - 20 %.The finished, final annealed sheets Bf have good mechanical properties. Thus, in the case of the magnesium sheets Bf investigated here, the yield strengths R p o, 2 were in the range of 165-170 N / mm 2 , the tensile strengths R m im Range of 250-270 N / mm 2 and elongations A 50 in the range of 15-20%.
Diag. 1 vergleicht die Rm, Rpo,2 und A50-Werte für längs- und quergewalzte Bleche, wobei die als Linien dargestellten Werte das längsgewalzte Material und die Rechtecke, Punkte und Sterne die Messwerte für quergewalztes Material repräsentieren. Diag. Figure 1 compares the R m , R p o, 2 and A 50 values for longitudinal and transverse rolled sheets, with the values shown as lines representing the longitudinally rolled material and the rectangles, points and stars representing the measured values for cross rolled material.
BEZUGSZEICHENREFERENCE NUMBERS
1 Fertigungslinie1 production line
2 Schmelzengefäß2 melting vessel
3 Düse3 nozzle
4 Zwei-Rollen-Bandgießmaschine4 two-roller strip casting machine
5 Walzgerüst5 rolling stand
6 Querteilschere6 cutting shear
7 Förderstrecke7 conveyor line
8 Schwenkarm8 swivel arm
9 Stapeleinrichtung9 stacking device
10 Vertikalachse des Schwenkarms10 vertical axis of the swivel arm
11 Achse, um die die Bleche B gedreht werden11 axis about which the sheets B are rotated
12 Blechstapel12 stacks of sheets
13 Transporteinrichtung13 transport device
14 Kaltwalzwerk14 cold rolling mill
15 Ofen15 oven
B BlecheB sheets
Bf fertig gewalztes Blech b Breite des Warmbands WBf finished rolled sheet b width of hot strip W
F FörderrichtungF conveying direction
L Längsrichtung des Magnesiumbandes ML longitudinal direction of the magnesium band M
LBf Länge des fertig gewalzten Blechs BfLBf length of finished rolled sheet Bf
LS Längsseiten der Bleche BLS longitudinal sides of the sheets B
LSl Längsseite, mit der das jeweilige Blech B in dasLSl longitudinal side, with the respective sheet B in the
Kaltwalzwerk eintrittCold rolling mill enters
M MagnesiumbandM magnesium band
QS Querseiten der Bleche BQS transverse sides of the sheets B
S MagnesiumschmelzeS magnesium melt
W Warmband W hot strip

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Verfahren zum Herstellen von Blechen (B) aus einer Magnesiumschmelze (S) , umfassend folgende Arbeitsschritte:1. A method for producing sheets (B) from a magnesium melt (S), comprising the following steps:
-Erschmelzen der Magnesiumschmelze (S),Melting the magnesium melt (S),
-Vergießen der Magnesiumschmelze zu einem gegossenen Band (M) ,Casting the molten magnesium into a cast strip (M),
-im unmittelbaren Anschluss an das Vergießen erfolgendes Bandwalzen des gegossenen Bandes (M) zu einem gewalzten Band (W) ,immediately after the casting, strip rolling of the cast strip (M) to a rolled strip (W),
-Querteilen des gewalzten Bandes (W) zu Blechen (B),-Drawing the rolled strip (W) into sheets (B),
-Walzen der Bleche (B) auf eine Enddicke, wobei bezogen auf die Bleche (B) das Walzen der Bleche (B) in einer quer zur Walzrichtung (L) des Bandwalzens ausgerichteten Richtung (Q) durchgeführt wird, die während des gesamten Walzens der Bleche (B) beibehalten wird.Rolling the sheets (B) to a final thickness, wherein, with respect to the sheets (B), the rolling of the sheets (B) is carried out in a direction (Q) oriented transversely to the rolling direction (L) of the band rolling, which during the entire rolling Sheets (B) is maintained.
2. Verfahren nach einem der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, d a s s das Walzen der Bleche (B) in mehreren Walzstichen durchgeführt wird. 2. The method according to any one of the preceding claims, characterized in that the rolling of the sheets (B) is carried out in several rolling passes.
3. Verfahren nach einem der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, d a s s die Bleche (B) auf eine Walzanfangstemperatur erwärmt werden, wenn ihre Temperatur unter 200 0C liegt.3. The method according to any one of the preceding claims, characterized in that the sheets (B) are heated to a rolling start temperature when their temperature is below 200 0 C.
4. Verfahren nach Anspruch 2 oder 3, d a d u r c h g e k e n n z e i c h n e t, d a s s die Bleche (B) zwischen jedem Walzschritt auf eine Walzanfangstemperatur erwärmt werden.4. A method according to claim 2 or 3, wherein the sheets (B) are heated to a rolling start temperature between each rolling step.
5. Verfahren nach einem der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, d a s s die fertig gewalzten Bleche (B) einer Schlussglühung -bei 330 0C - 360 0C unterzogen werden. 5. The method according to any one of the preceding claims, characterized in that the finished rolled sheets (B) of a final annealing at 330 0 C - 360 0 C are subjected.
PCT/EP2005/010801 2004-10-07 2005-10-07 Method for producing metal sheets from a magnesium melt WO2006040080A1 (en)

Priority Applications (7)

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PL05796633T PL1802405T3 (en) 2004-10-07 2005-10-07 Method for producing metal sheets from a magnesium melt
AU2005293768A AU2005293768B2 (en) 2004-10-07 2005-10-07 Method for producing metal sheets from a magnesium melt
CA002581780A CA2581780A1 (en) 2004-10-07 2005-10-07 Method for producing metal sheets from a magnesium melt
DE502005004356T DE502005004356D1 (en) 2004-10-07 2005-10-07 METHOD FOR PRODUCING PANELS FROM A MAGNESIUM MELT
US11/576,805 US20080245448A1 (en) 2004-10-07 2005-10-07 Method for Producing Metal Sheets from a Magnesium Melt
JP2007535094A JP5046944B2 (en) 2004-10-07 2005-10-07 Method for manufacturing a metal plate from magnesium melt
EP05796633A EP1802405B1 (en) 2004-10-07 2005-10-07 Method for producing metal sheets from a magnesium melt

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DE102004048805.3 2004-10-07
DE102004048805A DE102004048805B3 (en) 2004-10-07 2004-10-07 Process for producing sheets from a magnesium melt

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101369440B1 (en) 2006-08-03 2014-03-04 티센크루프 스틸 유럽 악티엔게젤샤프트 Production line and method for manufacturing a magnesium strip
KR101425195B1 (en) 2006-08-03 2014-08-01 티센크루프 스틸 유럽 악티엔게젤샤프트 Production line and method for manufacturing a magnesium strip

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103042060B (en) * 2012-10-15 2015-06-17 孙逸成 Production line for preparing magnesium alloy sheets by semi-melt extrusion method and technology of production line
KR101696993B1 (en) * 2015-01-06 2017-01-23 백진욱 Method for manufacturing thin magnesium sheet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941608A (en) * 1933-02-02 1934-01-02 Dow Chemical Co Rolling magnesium alloy
DE10052423C1 (en) * 2000-10-23 2002-01-03 Thyssenkrupp Stahl Ag Production of a magnesium hot strip comprises continuously casting a magnesium alloy melt to a pre-strip, and hot rolling the pre-strip directly from the casting heat at a specified roller starting temperature to form a hot strip
DE10156034A1 (en) * 2001-11-15 2003-06-05 Peter Stolfig Production of profiles or shaped sheets, of magnesium or magnesium alloys, in a continuous production line coupled to the smelting furnace with continuous casting and cutting and shaping in protective gas/vacuum zone
JP2004010959A (en) * 2002-06-06 2004-01-15 Mitsui Mining & Smelting Co Ltd Property improving method of magnesium sheet and plate,and magnesium alloy sheet and plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979398A (en) * 1958-07-03 1961-04-11 Dow Chemical Co Magnesium-base alloy
JPS5467546A (en) * 1977-11-08 1979-05-31 Kawasaki Steel Co Plate rolling method
JP4278256B2 (en) * 2000-01-06 2009-06-10 日本金属株式会社 Warm plastic working method
JP3521863B2 (en) * 2000-10-24 2004-04-26 住友金属工業株式会社 Manufacturing method of magnesium alloy sheet
JP2002348646A (en) * 2001-05-25 2002-12-04 Nippon Crose Rolling Corp Long size coil of wrought magnesium alloy and manufacturing method therefor
JP3503898B1 (en) * 2003-03-07 2004-03-08 権田金属工業株式会社 Method and apparatus for manufacturing magnesium metal sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941608A (en) * 1933-02-02 1934-01-02 Dow Chemical Co Rolling magnesium alloy
DE10052423C1 (en) * 2000-10-23 2002-01-03 Thyssenkrupp Stahl Ag Production of a magnesium hot strip comprises continuously casting a magnesium alloy melt to a pre-strip, and hot rolling the pre-strip directly from the casting heat at a specified roller starting temperature to form a hot strip
DE10156034A1 (en) * 2001-11-15 2003-06-05 Peter Stolfig Production of profiles or shaped sheets, of magnesium or magnesium alloys, in a continuous production line coupled to the smelting furnace with continuous casting and cutting and shaping in protective gas/vacuum zone
JP2004010959A (en) * 2002-06-06 2004-01-15 Mitsui Mining & Smelting Co Ltd Property improving method of magnesium sheet and plate,and magnesium alloy sheet and plate

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BECK, ADOLF: "KAPITEL:" TECHNOLOGIE DES WALZENS" AUS MAGNESIUM UND SEINE LEGIERUNGEN", 2001, SPRINGER BLN., 2. AUFLAGE, XP002358794 *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101369440B1 (en) 2006-08-03 2014-03-04 티센크루프 스틸 유럽 악티엔게젤샤프트 Production line and method for manufacturing a magnesium strip
KR101425195B1 (en) 2006-08-03 2014-08-01 티센크루프 스틸 유럽 악티엔게젤샤프트 Production line and method for manufacturing a magnesium strip

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US20080245448A1 (en) 2008-10-09
EP1802405A1 (en) 2007-07-04
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CN101035634A (en) 2007-09-12
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ATE397500T1 (en) 2008-06-15
EP1802405B1 (en) 2008-06-04
KR101208721B1 (en) 2012-12-06
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AU2005293768B2 (en) 2011-10-27
AU2005293768A1 (en) 2006-04-20

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