WO1998042462A1 - Method and installation for producing wire from aluminium strands - Google Patents

Method and installation for producing wire from aluminium strands Download PDF

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Publication number
WO1998042462A1
WO1998042462A1 PCT/DE1998/000681 DE9800681W WO9842462A1 WO 1998042462 A1 WO1998042462 A1 WO 1998042462A1 DE 9800681 W DE9800681 W DE 9800681W WO 9842462 A1 WO9842462 A1 WO 9842462A1
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WIPO (PCT)
Prior art keywords
strand
wire
trapezoidal
casting
milling
Prior art date
Application number
PCT/DE1998/000681
Other languages
German (de)
French (fr)
Inventor
Oskar Bohnstengel
Ulrich Riepling
Original Assignee
Mannesmann 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 Mannesmann Ag filed Critical Mannesmann Ag
Priority to AU72043/98A priority Critical patent/AU7204398A/en
Publication of WO1998042462A1 publication Critical patent/WO1998042462A1/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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • 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
    • B21B2003/001—Aluminium or its alloys

Definitions

  • the invention relates to a method and a plant for the production of wire from a trapezoidal aluminum strand, which is cast in the circumferential groove of a casting wheel, which is partially covered by a masking tape, and after it has solidified, is pulled out of the rollers of a pull-out device and without interruption into a first of several rolling stands is introduced, after which the strand is deformed in this and the subsequent rolling stands in several stages to the desired wire cross-section.
  • the continuous casting of molten metal in a circumferential groove around a rotating, e.g. Properzi casting wheel is well known in metal casting technology.
  • the metal introduced into the casting wheel solidifies continuously during the cooling between the cover band and the circumferential groove, with alloy components and oxides being increasingly deposited on the surface of the solidifying strand on the side of the circumferential groove closed by the cover band. These oxides reduce the conductivity of the wire rolled from the aluminum strand and must be removed.
  • Any impurities deposited on the casting wheel leaving the casting wheel are removed inline at a strand temperature of 450-500 ° C. by mechanical removal of the surface of the strand before the strand enters the first deformation stage.
  • the milling process is therefore carried out at a high level customary for such casting plants
  • Another method feature of the invention advantageously proposes straightening the strand before mechanically removing the strand surface. Straightening is advisable because only a straight strand enables a defined removal of the strand surface.
  • the strand is deburred inline immediately after or during the mechanical removal in the edge region adjoining the surface. This ensures that the burr that arises on the edges during surface milling of the strand is removed before the strand enters the first Waizverformungs shake. If this did not happen, the burr could be rolled into the strand surface and lead to damage to the rolling stock during the subsequent rolling deformation.
  • a plant for the production of wire according to the proposed method in which the aluminum strand is pulled out of the rollers of a pull-out device after it has solidified and is introduced without interruption into a first of several roll stands, is characterized in that a milling device is located between the pull-out device and the first roll stand for those facing the masking tape
  • the strand is thus milled inline immediately behind the casting wheel at the pull-out speed of the strand, which for a casting wheel is approximately 12 m / min.
  • the strand has a temperature of 450-500 ° C out of the casting heat and can be machined mechanically by the milling device at this temperature before it is introduced into the first rolling stand.
  • a deburring device for the edge region of the strand adjoining the surface is associated or arranged downstream of the milling device. The burr is either removed simultaneously with the milling of the surface or immediately thereafter, so that a machined strand is roll-formed.
  • the milling device is preferably preceded by a strand straightening machine which straightens the bent strand coming from the peripheral part of the casting wheel.
  • the milling and / or the deburring device are assigned support and hold-down rollers with which it is ensured that the strand is guided cleanly under the tools. This is the only way to ensure that the preferably specified removal depth of up to 5 mm for the surface and up to 3 mm for the edge area is maintained.
  • the milling device is equipped with rotating milling heads which can be moved in two axes over the surface to be removed, which in turn are equipped with polycrystalline diamonds and can be driven off by means of high-speed drives.
  • Casting plants usual high throughput speed with a long service life of the tools, since the milling process should not be interrupted during a casting period. For this reason, high-speed drives with high performance and special tools are preferred for the drive PCD inserts for use. These tools let you expect a correspondingly long service life with a good milling pattern at the same time.
  • the chips generated when milling the surface are extracted and disposed of during the machining process.
  • the surfaces of an aluminum strand produced on a casting wheel can be inline for the first time, i.e. work without interrupting the casting and rolling process, in the warm state between the casting station and the wire rolling mill.
  • the strand 1 After leaving the casting wheel 2, the strand 1 is guided from the pull-out rollers 3 to the strand guide table 4 and from there into the straightening station 8. There, the strand 1 is straightened between straightening rolls which are offset from one another.
  • the guide table 15 is provided to support the insertion process of the start of the strand; the straightening roller set is designated 14.
  • the milling device 9 Following the straightening station 8, the milling device 9 according to the invention is arranged, the main milling head 9a of which can be moved in two axes (in the plane of the drawing and perpendicular to the plane of the drawing) and which mills the surface of the strand 1 to a maximum depth of 5 mm.
  • Hold-down rollers 17 press the
  • next station which follows in the direction of strand passage, deburring of the strand edges takes place in the surface area.
  • the deburring heads 10 and 11 are for this purpose
  • the strand edge is arranged at an incline so that the rotating tool heads work off the strip edges that have been moved along with the strand.
  • the roller set 16 is mounted, which guides the strand in a defined manner on the exit side of the milling station, so that a precise and qualitatively good surface milling can be carried out.
  • the strand milled on its surface and on its edges then runs inline into the first rolling stand 5 of a rolling train arranged from a plurality of rolling stands arranged one behind the other, of which only the stands 6, 7 are shown. There, the strand is rolled into wire in several successive deformation steps.
  • the essence of the method according to the invention is to be seen in the fact that the continuously cast aluminum profile is milled in a warm state between the casting station and the wire rolling mill, specifically before the first deformation stage and without interrupting the continuous casting-rolling process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)

Abstract

The invention relates to a method and a device for producing wire from cast aluminum strands with a trapezoidal cross-section. Said strands undergo several roll forming steps (5, 6) after casting and hardening in the peripheral groove of a casting wheel (2) that is partially covered by a strip (2a). According to the invention, impurities deposited on the surface of the strand coming out of the casting wheel at casting speed are mechanically removed in-line during the first forming step at a temperature of 450-500 DEG C.

Description

Verfahren und Anlage zur Herstellung von Draht aus AluminiumsträngenProcess and plant for the production of wire from aluminum strands
Beschreibungdescription
Die Erfindung betrifft ein Verfahren und eine Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen Aluminiumstrang, der in der teilweise von einem Abdeckband abgedeckten Umfangsnut eines Gießrades gegossen und nach seiner Erstarrung von den Rollen einer Ausziehvorrichtung ausgezogen und ohne Unterbrechung in ein erstes von mehreren Walzgerüsten eingeführt wird, wonach der Strang in diesem und den folgenden Walzgerüsten in mehreren Stufen zu dem gewünschten Drahtquerschnitt verformt wird.The invention relates to a method and a plant for the production of wire from a trapezoidal aluminum strand, which is cast in the circumferential groove of a casting wheel, which is partially covered by a masking tape, and after it has solidified, is pulled out of the rollers of a pull-out device and without interruption into a first of several rolling stands is introduced, after which the strand is deformed in this and the subsequent rolling stands in several stages to the desired wire cross-section.
Das kontinuierliche Gießen von geschmolzenem Metall in einer Umfangsnut um ein rotierendes, z.B Properzi Gießrad herum ist in der Metallgießtechnik allgemein bekannt. Das in das Gießrad eingeleitete Metall erstarrt während der Abkühlung zwischen dem Abdeckband und der Umfangsnut kontinuierlich, wobei sich auf der durch das Abdeckband geschlossenen Seite der Umfangsnut an der Oberfläche des erstarrenden Stranges verstärkt Legierungsbestandteile und Oxide ablagern. Diese Oxide verringern die Leitfähigkeit des aus dem Aluminiumstrang gewalzten Drahtes und sind zu entfernen.The continuous casting of molten metal in a circumferential groove around a rotating, e.g. Properzi casting wheel is well known in metal casting technology. The metal introduced into the casting wheel solidifies continuously during the cooling between the cover band and the circumferential groove, with alloy components and oxides being increasingly deposited on the surface of the solidifying strand on the side of the circumferential groove closed by the cover band. These oxides reduce the conductivity of the wire rolled from the aluminum strand and must be removed.
Man hat zwar schon versucht, hinter der ersten Waizverformungsstufe das dort schon verformte und teilweise gekühlte Profil zu fräsen, was jedoch nur bedingt zum Erfolg führte, weil ein Teil der Verunreinigungen in der ersten Walzstufe bereits in das Material eingewalzt wurden und durch nachträgliches Fräsen nicht mehr zu entfernen war.Attempts have already been made to mill the already deformed and partially cooled profile behind the first rolling deformation stage, but this was only partially successful because part of the impurities were already rolled into the material in the first rolling stage and no longer by subsequent milling was to be removed.
Aufgabe der vorliegenden Erfindung ist es, ausgehend von dem geschilderten Problem ein Verfahren und eine Anlage zur Herstellung von Draht aus einem trapezförmig gegossenen Aluminiumstrang zu schaffen, mit dem die verfahrensbedingt entstehenden Verunreinigungen an der Oberseite des Stranges während des kontinuierlichen Herstellungsprozesses entfernt werden können.It is an object of the present invention, based on the problem described, to provide a method and a system for producing wire from a trapezoidal cast aluminum strand, with which the process-related emerging impurities on the top of the strand can be removed during the continuous manufacturing process.
Zur Lösung der Aufgabe wird ein Verfahren vorgeschlagen, das dadurch gekennzeichnet ist, daß die an der Oberfläche des mit Gießgeschwindigkeit dasTo achieve the object, a method is proposed, which is characterized in that the on the surface of the casting speed
Gießrad verlassenden Stranges angelagerten Verunreinigungen vor dem Einlauf des Stranges in die erste Verformungsstufe inline bei einer Strangtemperatur von 450-500 °C durch mechanisches Abtragen der Strangoberfläche entfernt werden.Any impurities deposited on the casting wheel leaving the casting wheel are removed inline at a strand temperature of 450-500 ° C. by mechanical removal of the surface of the strand before the strand enters the first deformation stage.
Der Fräsvorgang erfolgt also bei einer für derartige Gießanlagen üblichen hohenThe milling process is therefore carried out at a high level customary for such casting plants
Durchlaufgeschwindigkeit von ca. 12 m/min vor der ersten Verformungsstufe, so daß die Verunreinigungen an der Strangoberfläche bereits entfernt sind, wenn der Strang walzverformt wird. Die dabei aus der Gießhitze heruntergekühlte Strangtemperatur von 450-500 °C erlaubt eine mechanische Bearbeitung des Stranges mit entsprechendem Werkzeug bei der hohen Durchlaufgeschwindigkeit.Throughput speed of approx. 12 m / min before the first deformation stage, so that the impurities on the strand surface are already removed when the strand is roll-formed. The strand temperature of 450-500 ° C, cooled down from the casting heat, permits mechanical processing of the strand with the appropriate tools at the high throughput speed.
Vorteilhafterweise wird nach einem anderen Verfahrensmerkmal der Erfindung vorgeschlagen, den Strang vor dem mechanischen Abtragen der Strangoberfläche zu richten. Das Richten ist deshalb sinnvoll, weil nur ein gerader Strang ein definiertes Abtragen der Strangoberfläche ermöglicht.Another method feature of the invention advantageously proposes straightening the strand before mechanically removing the strand surface. Straightening is advisable because only a straight strand enables a defined removal of the strand surface.
In einer besonderen Ausgestaltung der Erfindung ist vorgesehen, daß der Strang unmittelbar nach oder während dem mechanischem Abtragen in dem an die Oberfläche anschließenden Kantenbereich inline entgratet wird. Dadurch wird sichergestellt, daß der beim Oberflächenfräsen des Stranges an den Kanten entstehende Grat entfernt wird, bevor der Strang in die erste Waizverformungsstufe einläuft. Würde dies nicht geschehen, so könne der Grat in die Strangoberfläche eingewalzt und bei der späteren Walzverformung zur Beschädigung des Walzgutes führen.In a special embodiment of the invention it is provided that the strand is deburred inline immediately after or during the mechanical removal in the edge region adjoining the surface. This ensures that the burr that arises on the edges during surface milling of the strand is removed before the strand enters the first Waizverformungsstufe. If this did not happen, the burr could be rolled into the strand surface and lead to damage to the rolling stock during the subsequent rolling deformation.
Es hat sich als ausreichend erwiesen, wenn nach einem weiteren Merkmal der Erfindung die Oberfläche des Stranges bis zu einer Tiefe von 5 mm und der Kantenbereich bis zu einer Tiefe von 3 mm abgetragen werden. Bei einer solchen Abtragtiefe werden die Verunreinigungen in diesem Bereich sicher entfernt. Eine Anlage zur Herstellung von Draht nach dem vorgeschlagenen Verfahren, in der der Aluminiumstrang nach seiner Erstarrung von den Rollen einer Ausziehvorrichtung ausgezogen und ohne Unterbrechung in ein erstes von mehreren Walzgerüsten eingeführt wird, ist dadurch gekennzeichnet, daß zwischen der Ausziehvorrichtung und dem ersten Walzgerüst eine Fräsvorrichtung für die dem Abdeckband zugewandteIt has proven to be sufficient if, according to a further feature of the invention, the surface of the strand is removed to a depth of 5 mm and the edge area to a depth of 3 mm. With such a removal depth, the impurities in this area are safely removed. A plant for the production of wire according to the proposed method, in which the aluminum strand is pulled out of the rollers of a pull-out device after it has solidified and is introduced without interruption into a first of several roll stands, is characterized in that a milling device is located between the pull-out device and the first roll stand for those facing the masking tape
Oberfläche des Stranges vorgesehen ist. Das Fräsen des Stranges erfolgt somit inline unmittelbar hinter dem Gießrad mit Ausziehgeschwindigkeit des Stranges, die bei einem Gießrad bei ca. 12 m/min liegt. Der Strang hat, aus der Gießhitze heraus, eine Temperatur von 450-500 °C und kann bei dieser Temperatur mechanisch von der Fräsvorrichtung bearbeitet werden, bevor er in das erste Walzgerüst eingeführt wird.Surface of the strand is provided. The strand is thus milled inline immediately behind the casting wheel at the pull-out speed of the strand, which for a casting wheel is approximately 12 m / min. The strand has a temperature of 450-500 ° C out of the casting heat and can be machined mechanically by the milling device at this temperature before it is introduced into the first rolling stand.
Nach einem weiteren Merkmal der Erfindung ist der Fräsvorrichtung eine Entgratvorrichtung für den an die Oberfläche anschließenden Kantenbereich des Stranges zu- oder nachgeordnet. Der Grat wird entweder gleichzeitig mit dem Fräsen der Oberfläche entfernt oder unmittelbar danach, so daß ein bearbeiteter Strang walzverformt wird.According to a further feature of the invention, a deburring device for the edge region of the strand adjoining the surface is associated or arranged downstream of the milling device. The burr is either removed simultaneously with the milling of the surface or immediately thereafter, so that a machined strand is roll-formed.
Vorzugsweise ist der Fräsvorrichtung eine Strangrichtmaschine vorgeordnet, die den aus dem Umfangsteil des Gießrades kommenden gebogenen Strang gerade richtet. Zusätzlich und nach einem anderen Merkmal der Erfindung ist vorgesehen, daß der Fräs- und/oder der Entgratvorrichtung Stütz- und Niederhalterollen zugeordnet sind, mit denen sichergestellt wird, daß der Strang unter den Werkzeugen sauber geführt wird. Nur dadurch läßt sich erreichen, daß die vorzugsweise vorgegebene Abtragtiefe von bis zu 5 mm für die Oberfläche und bis zu 3 mm für den Kantenbereich eingehalten werden.The milling device is preferably preceded by a strand straightening machine which straightens the bent strand coming from the peripheral part of the casting wheel. In addition and according to another feature of the invention, it is provided that the milling and / or the deburring device are assigned support and hold-down rollers with which it is ensured that the strand is guided cleanly under the tools. This is the only way to ensure that the preferably specified removal depth of up to 5 mm for the surface and up to 3 mm for the edge area is maintained.
Die Fräsvorrichtung ist nach einem weiteren Merkmal der Erfindung mit in zwei Achsen über die abzutragende Oberfläche bewegbaren rotierenden Fräsköpfen bestückt, die ihrerseits mit polykristallinen Diamanten bestückt sind und über Hochgeschwindigkeitsantriebe abtreibbar sind. Der Fräsvorgang hat bei der für dieAccording to a further feature of the invention, the milling device is equipped with rotating milling heads which can be moved in two axes over the surface to be removed, which in turn are equipped with polycrystalline diamonds and can be driven off by means of high-speed drives. The milling process for the
Gießanlagen üblichen hohen Durchlaufgeschwindigkeit mit einer langen Standzeit der Werkzeuge zu erfolgen, da der Fräsvorgang während einer Gießperiode nicht unterbrochen werden soll. Daher kommen für den Antrieb vorzugsweise Hochgeschwindigkeitsantriebe mit hoher Leistung und spezielle Werkzeuge mit PKD-Wendeplatten zum Einsatz. Diese Werkzeuge lassen die entsprechend lange Standzeit bei gleichzeitig gutem Fräsbild erwarten.Casting plants usual high throughput speed with a long service life of the tools, since the milling process should not be interrupted during a casting period. For this reason, high-speed drives with high performance and special tools are preferred for the drive PCD inserts for use. These tools let you expect a correspondingly long service life with a good milling pattern at the same time.
Die beim Fräsen der Oberfläche entstehenden Späne werden während des Bearbeitungsvorganges abgesaugt und entsorgt.The chips generated when milling the surface are extracted and disposed of during the machining process.
Mit dem erfindungsgemäßen Verfahren und der vorgeschlagenen Anlage läßt sich erstmals die Oberflächen eines auf einem Gießrad hergestellten Aluminiumstranges inline, d.h. ohne Unterbrechung des Gieß- und Walzvorganges, bearbeiten, und zwar im warmen Zustand zwischen der Gießstation und dem Drahtwalzwerk.With the method according to the invention and the proposed system, the surfaces of an aluminum strand produced on a casting wheel can be inline for the first time, i.e. work without interrupting the casting and rolling process, in the warm state between the casting station and the wire rolling mill.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and is described below.
Die einzige Zeichnungsfigur zeigt eine erfindungsgemäße Anlage zur Herstellung vonThe only drawing figure shows a system according to the invention for the production of
Draht aus Aluminiumprofil in der Seitenansicht. Mit 1 ist der Aluminiumstrang bezeichnet, der auf dem Properzi Gießrad 2 kontinuierlich stranggegossen wird. Die Gießeinrichtung selbst ist nicht dargestellt, da sie konventionell und bekannt ist. Mit 2a ist das endlos umlaufende Abdeckband bezeichnet, das einen Teil des Umfangs des Gießrades 2 abdeckt und dabei die in dem Gießrad gebildete Umfangsnut verschließt.Aluminum profile wire in side view. With 1 the aluminum strand is designated, which is continuously cast on the Properzi casting wheel 2. The pouring device itself is not shown since it is conventional and known. With 2a the endless revolving masking tape is designated, which covers part of the circumference of the casting wheel 2 and thereby closes the circumferential groove formed in the casting wheel.
Nach dem Verlassen des Gießrades 2 wird der Strang 1 von den Ausziehrollen 3 zu dem Strangführungstisch 4 und von dort in die Richtstation 8 geführt. Dort wird der Strang 1 zwischen zueinander versetzten Richtrollen geradegerichet. Zur Unterstützung des Einführvorganges des Stranganfanges ist der Leittisch 15 vorgesehen; der Richtrollensatz ist mit 14 bezeichnet.After leaving the casting wheel 2, the strand 1 is guided from the pull-out rollers 3 to the strand guide table 4 and from there into the straightening station 8. There, the strand 1 is straightened between straightening rolls which are offset from one another. The guide table 15 is provided to support the insertion process of the start of the strand; the straightening roller set is designated 14.
Im Anschluß an die Richtstation 8 ist die erfindungsgemäße Fräsvorrichtung 9 angeordnet, deren Hauptfräskopf 9a in zwei Achsen (in der Zeichnungsebene und senkrecht zur Zeichnungsebene) verfahrbar ist und der die Oberfläche des Stranges 1 auf einer Tiefe bis maximal 5 mm abfräst. Niederhalterollen 17 drücken dabei denFollowing the straightening station 8, the milling device 9 according to the invention is arranged, the main milling head 9a of which can be moved in two axes (in the plane of the drawing and perpendicular to the plane of the drawing) and which mills the surface of the strand 1 to a maximum depth of 5 mm. Hold-down rollers 17 press the
Strang 1 gegen die Stützrollen 13 und sorgen für eine definierter Auflage des Stranges während des Fräsvorganges.Strand 1 against the support rollers 13 and ensure a defined support of the strand during the milling process.
In der nächsten, in Strangdurchlaufrichtung folgenden Station erfolgt das Entgraten der Strangkanten im Oberflächenbereich. Dazu sind die Entgratköpfe 10 und 11 zur Strangkante geneigt angeordnet, so daß die rotierenden Werkzeugköpfe die mit dem Strang vorbeibewegten Bandkaπte abarbeiten. In der Niederhaltestation 12 ist der Rollensatz 16 gelagert, der ausgangsseitig der Frässtation den Strang definiert führt, so daß ein genaues und qualitativ gutes Oberflächenfräsen erfolgen kann.In the next station, which follows in the direction of strand passage, deburring of the strand edges takes place in the surface area. The deburring heads 10 and 11 are for this purpose The strand edge is arranged at an incline so that the rotating tool heads work off the strip edges that have been moved along with the strand. In the hold-down station 12, the roller set 16 is mounted, which guides the strand in a defined manner on the exit side of the milling station, so that a precise and qualitatively good surface milling can be carried out.
Der an seiner Oberfläche und an seinen Kanten gefräste Strang läuft sodann inline in das erste Walzgerüst 5 einer aus mehreren hintereinander angeordneten Walzgerüsten angeordneten Walzstraße ein, von der nur die Gerüste 6, 7 dargestellt sind. Dort wird der Strang in mehreren aufeinanderfolgenden Verformungsschritten zu Draht ausgewalzt.The strand milled on its surface and on its edges then runs inline into the first rolling stand 5 of a rolling train arranged from a plurality of rolling stands arranged one behind the other, of which only the stands 6, 7 are shown. There, the strand is rolled into wire in several successive deformation steps.
Der Kern des erfindungsgemäßen Verfahrens ist darin zu sehen, daß das stranggegossene Aluminiumprofil in warmem Zustand zwischen der Gießstation und dem Drahtwalzwerk gefräst wird, und zwar vor der ersten Verformungsstufe und ohne Unterbrechung des kontinuierlichen Gieß-Walzprozesses. The essence of the method according to the invention is to be seen in the fact that the continuously cast aluminum profile is milled in a warm state between the casting station and the wire rolling mill, specifically before the first deformation stage and without interrupting the continuous casting-rolling process.

Claims

Patentansprüche claims
1. Verfahren zur Herstellung von Draht aus einem im Querschnitt trapezförmigen gegossenen Aluminiumstrang, der nach dem Gießen und Erstarren in der teilweise von einem Band abgedeckte Umfangsnut eines Gießrades mehreren1. A method for producing wire from a cast aluminum strand trapezoidal in cross section, which after casting and solidification in the circumferential groove of a casting wheel, which is partially covered by a band
Walzverformungsstufen unterzogen wird, dadurch gekennzeichnet, daß die an der Oberfläche des mit Gießgeschwindigkeit das Gießrad verlassenden Stranges angelagerten Verunreinigungen vor dem Einlauf desRolling stages is subjected to, characterized in that the impurities deposited on the surface of the strand leaving the casting wheel at the casting speed before the inlet of the
Stranges in die erste Verformungsstufe inline bei einer Strangtemperatur vonStrands in the first deformation stage inline at a strand temperature of
450° bis 500° C durch mechanisches Abtragen der Stangoberfläche entfernt werden.450 ° to 500 ° C can be removed by mechanical removal of the rod surface.
2. Verfahren zur Herstellung von Draht aus einem im Querschnitt trapezförmigen gegossenen Aluminiumstrang nach Anspruch 1 , dadurch gekennzeichnet, daß der Strang vor dem mechanischen Abtragen der Strangoberfläche gerichtet wird.2. A method for producing wire from a cast aluminum strand trapezoidal in cross section according to claim 1, characterized in that the strand is directed before the mechanical removal of the strand surface.
3. Verfahren zur Herstellung von Draht aus einem im Querschnitt trapezförmigen gegossenen Aluminiumstrang nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Strang unmittelbar nach oder während dem mechanischen Abtragen in dem an die Oberfläche anschließenden Kantenbereich inline entgratet wird.3. A method for producing wire from a cast aluminum strand trapezoidal in cross section according to claim 1 and 2, characterized in that the strand is deburred inline immediately after or during mechanical removal in the edge region adjoining the surface.
4. Verfahren zur Herstellung von Draht aus einem im Querschnitt trapezförmigen gegossenen Aluminiumstrang nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Oberfläche bis zu einer Tiefe von 5 mm und der der Kantenbereich bis zu einer Tiefe von 3 mm abgetragen werden. 4. A method for producing wire from a cast aluminum strand trapezoidal in cross section according to claim 1 to 3, characterized in that the surface to a depth of 5 mm and that of the edge region to a depth of 3 mm are removed.
5. Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen Aluminiumstrang, der in der teilweise von einem Abdeckband abgedeckte Umfangsnut eines Gießrades gegossen und nach seiner Erstarrung von den Rollen einer Ausziehvorrichtung ausgezogen und ohne Unterbrechung in ein erstes von mehreren Walzgerüsten eingeführt wird, wonach der Strang in diesem und den folgenden Walzgerüsten in mehreren Stufen zu dem gewünschten Drahtquerschnitt verformt wird, dadurch gekennzeichnet, daß zwischen der Ausziehvorrichtung (3) und dem ersten Walzgerüst (5) eine Fräsvorrichtung (9) für die dem Abdeckband (2a) zugewandte Oberfläche des5. Plant for the production of wire from a trapezoidal aluminum strand, which is cast in the circumferential groove of a casting wheel, which is partially covered by a masking tape, and after it has solidified, is pulled out of the rollers of a pull-out device and is introduced without interruption into a first of several rolling stands, after which the Strand in this and the following rolling stands is deformed in several stages to the desired wire cross-section, characterized in that between the pull-out device (3) and the first rolling stand (5) a milling device (9) for the surface of the cover strip (2a) facing the
Stranges (1) vorgesehen ist.Stranges (1) is provided.
6. Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen Aluminiumstrang nach Anspruch 5, dadurch gekennzeichnet, daß der Fräsvorrichtung (9) eine Entgratvorrichtung (11 ,12) für den an die Oberfläche anschließenden Kantenbereich des Stranges (1) zu- oder nachgeordnet ist.6. Plant for the production of wire from a trapezoidal aluminum strand according to claim 5, characterized in that the milling device (9) has a deburring device (11, 12) for the edge region of the strand (1) adjoining or arranged downstream of the surface .
7. Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen7. Plant for the production of wire from a trapezoidal in cross section
Aluminiumstrang nach Anspruch 5 und 6, dadurch gekennzeichnet, daß der Fräsvorrichtung (9) eine Strangrichtmaschine (8) vorgeordnet ist.Aluminum strand according to claims 5 and 6, characterized in that the milling device (9) is preceded by a strand straightening machine (8).
8. Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen Aluminiumstrang nach Anspruch 5 bis 7, dadurch gekennzeichnet, daß der Fräs- und/oder der Entgratvorrichtung (9, 1 1 , 12) Stütz- und Niederhalterollen (13,17) zugeordnet sind.8. Plant for the production of wire from a trapezoidal-shaped aluminum strand according to claim 5 to 7, characterized in that the milling and / or deburring device (9, 1 1, 12) support and hold-down rollers (13, 17) are assigned .
9. Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen Aluminiumstrang nach Anspruch 5 bis 8, dadurch gekennzeichnet, daß die Fräsvorrichtung (9) mit mindestens einem in zwei Achsen über die abzutragende Oberfläche bewegbaren rotierenden Fräskopf (9a) bestückt ist. 9. Plant for the production of wire from a trapezoidal-shaped aluminum strand according to claim 5 to 8, characterized in that the milling device (9) is equipped with at least one rotating milling head (9a) movable in two axes over the surface to be removed.
10. Anlage zur Herstellung von Draht aus einem im Querschnitt trapezförmigen Aluminiumstrang nach Anspruch 5 bis 9, dadurch gekennzeichnet, daß der Fräskopf (9a) mit polykristallinen Diamanten (PKD) bestückt und über Hochgeschwindigkeitsantriebe antreibbar sind. 10. Plant for the production of wire from a trapezoidal-shaped aluminum strand according to claim 5 to 9, characterized in that the milling head (9a) is equipped with polycrystalline diamonds (PCD) and can be driven by high-speed drives.
PCT/DE1998/000681 1997-03-20 1998-03-05 Method and installation for producing wire from aluminium strands WO1998042462A1 (en)

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DE1997113465 DE19713465A1 (en) 1997-03-20 1997-03-20 Process and plant for the production of wire from aluminum strands

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US20030135977A1 (en) * 2001-12-13 2003-07-24 Alfredo Riviere Continuous production of large diameter bars for semi-solid forming

Citations (6)

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US3331123A (en) * 1966-04-05 1967-07-18 Southwire Co Method and apparatus for producing an oxide-free hot-formed product
FR1561706A (en) * 1967-04-19 1969-03-28 Southwire Co
DE2515774A1 (en) * 1974-04-16 1975-10-30 Cegedur PROCESS AND DEVICE FOR IMPROVING THE QUALITY, IN PARTICULAR THE EXTERNAL CONSTRUCTION, OF OBJECTS, SUCH AS RODS OR ROLLED WIRE
DE2602339A1 (en) * 1975-01-24 1976-07-29 Southwire Co PROCESS FOR CONTINUOUSLY CASTING A STRAND FROM AN ALUMINUM ALLOY
EP0053274A1 (en) * 1980-11-28 1982-06-09 Siemag Transplan Gmbh Method of and installation for the continuous mechanical removal of material form casting strand surfaces
US4705096A (en) * 1981-09-08 1987-11-10 Southwire Company Exfoliation of surface oxide from continuously cast copper bar in conjunction with inline hot rolling

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Publication number Priority date Publication date Assignee Title
GB1469241A (en) * 1973-06-25 1977-04-06 Morgan Construction Co Method and apparatus for continuously casting and rolling non- ferrous product

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331123A (en) * 1966-04-05 1967-07-18 Southwire Co Method and apparatus for producing an oxide-free hot-formed product
FR1561706A (en) * 1967-04-19 1969-03-28 Southwire Co
DE2515774A1 (en) * 1974-04-16 1975-10-30 Cegedur PROCESS AND DEVICE FOR IMPROVING THE QUALITY, IN PARTICULAR THE EXTERNAL CONSTRUCTION, OF OBJECTS, SUCH AS RODS OR ROLLED WIRE
DE2602339A1 (en) * 1975-01-24 1976-07-29 Southwire Co PROCESS FOR CONTINUOUSLY CASTING A STRAND FROM AN ALUMINUM ALLOY
EP0053274A1 (en) * 1980-11-28 1982-06-09 Siemag Transplan Gmbh Method of and installation for the continuous mechanical removal of material form casting strand surfaces
US4705096A (en) * 1981-09-08 1987-11-10 Southwire Company Exfoliation of surface oxide from continuously cast copper bar in conjunction with inline hot rolling

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