EP2648871A1 - Method and devices for connecting an aluminium strip to a copper strip under protective gas - Google Patents

Method and devices for connecting an aluminium strip to a copper strip under protective gas

Info

Publication number
EP2648871A1
EP2648871A1 EP11808161.1A EP11808161A EP2648871A1 EP 2648871 A1 EP2648871 A1 EP 2648871A1 EP 11808161 A EP11808161 A EP 11808161A EP 2648871 A1 EP2648871 A1 EP 2648871A1
Authority
EP
European Patent Office
Prior art keywords
pressing device
bands
strip
protective gas
cleaning device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11808161.1A
Other languages
German (de)
French (fr)
Inventor
Gerhard Ziemek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fushi Copperweld Inc
Original Assignee
Fushi Copperweld Inc
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 Fushi Copperweld Inc filed Critical Fushi Copperweld Inc
Publication of EP2648871A1 publication Critical patent/EP2648871A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • 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
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • B23K20/2333—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer one layer being aluminium, magnesium or beryllium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/16—Bands or sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/12—Copper or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials

Definitions

  • the invention relates to a method for metallurgically bonding a strip of aluminum with a band of copper, with which the two in their longitudinal direction parallel to each other moved bands at their intended for mutual contact surfaces in a cleaning device under inert gas
  • a made of two different metals, one-piece band produced by such a method is used in particular in the high frequency range. Due to the known effect of current displacement, for example, only relatively thin copper layers are required in conductors of high-frequency cables.
  • the aluminum strip connected to the described method with the copper strip serves only to stabilize the same and, as it were, as a carrier for the copper strip. In order for the metallurgically strong bond can be obtained, the bands and
  • both belts are freed of oxide layers in a cleaning device using rotating brushes on the intended for mutual investment flat sides under a protective gas, for example argon.
  • a protective gas for example argon.
  • the inert gas prevents new formation of oxides.
  • the two bands are then passed through a gap between two rolls of a rolling mill and thereby metallurgically firmly connected. At the same time, the thickness of the one-piece band reduced.
  • the two belts and thus also the one-piece belt are moved in their longitudinal direction by the driven rollers of the rolling mill.
  • the rolling mill can quickly reoxidize the aluminum strip, so that a continuous solid metallurgical bond with the copper strip can not be guaranteed.
  • the invention has the object of developing the above-described method so that a new oxide formation on the two bands can be excluded prior to their merger.
  • the "shielding gas” used in this process is a special gas which prevents the formation of oxides, such as noble gases, inert gases and reducing gases, etc.
  • oxides such as noble gases, inert gases and reducing gases, etc.
  • Pulling device to be pulled In the pressing device can
  • two rotatably mounted rollers with relatively small Dimensions are used, which are separated by an adjustable gap, through which the bands are pulled through.
  • Butrückvorraum can also be used, for example, a slot with adjustable slot.
  • Housing can have relatively small dimensions and easily with a
  • Cleaning device enclosing housing to be connected to a one-piece housing.
  • the one-piece housing is filled in carrying out the process with inert gas.
  • the formation of oxide layers preventing cover of the two bands with inert gas is only repealed in this process, when the one-piece band, in which the two bands are metallurgically firmly connected, leaves the pressing device.
  • Fig. 1 in a schematic representation of a plant for carrying out the method according to the invention.
  • Fig. 2 shows a detail of Fig. 2 in more detail.
  • the system for connecting an aluminum strip with a copper strip has two rotatably mounted coils 1 and 2, a cleaning device 3, a
  • the deduction device 5 is advantageously designed as a caterpillar deduction.
  • Cleaning device 3 and pressure device 4 are arranged in a common housing 7, which is filled in carrying out the process with a protective gas, for example with argon.
  • a protective gas for example with argon.
  • the method according to the invention is carried out, for example, as follows:
  • the two bands 8 and 9 are pulled by means of the trigger device 5 of their coils 1 and 2 in the direction of the arrow 10 and through the cleaning device 3 and the pressing device 4 pulled through.
  • the cleaning device 3 the areas intended for mutual contact of the two belts 8 and 9 are freed of impurities and in particular of oxidic substances in a continuous pass. This is done under inert gas, so that after leaving the cleaning device 3 on the cleaned surfaces of the bands 8 and 9 no
  • the two cleaned belts 8 and 9 are brought together within the housing 7 under further existing protective gas cover in the pressing device 4 and pressed against each other, so that they are metallurgically firmly connected to a one-piece band 1 1 together.
  • the one-piece belt 1 1 leaves the housing 7 through a sealed outlet. It can finally be wound onto the spool 6.
  • the unit of housing 7, cleaning device 3 and pressure device 4 may be constructed, for example, as shown in FIG.
  • the housing 7 shown in one piece in Fig. 1 is divided in the embodiment of FIG. 2 in interconnected items.
  • the cleaning device 3 therefore consists of an upper
  • Housing part 12 and a lower housing part 13 are each, for example, a number of rotatable about its axis
  • the pressing device 4 has its own housing 1 6.
  • Cleaning device 3 are via channels 1 7 and 18 with the housing 16 of
  • Pressing device 4 hermetically sealed, so that the one-piece
  • cleaning device 3 and pressing device 4 are passed through, for example, as follows by belts 8 and 9:
  • the copper strip 8 first passes into the upper housing part 12 of
  • the copper strip 8 is doing, for example
  • Pulled metal brush 14 along while the aluminum strip 9 is advantageously pulled along grinding wheels 15 along.
  • Both bands 8 and 9 are thereby freed on the flat sides, which are to be brought to mutual contact, in particular of oxides. It can also be used for both bands 8 and 9 metal brushes or grinding wheels or other components by means of which the described cleaning can be performed.
  • the metal brushes 14 and grinding wheels 15 clean the surfaces of the two belts 8 and 9 in a continuous pass and remove in particular oxide materials.
  • the two bands 8 and 9 are through this
  • the heated as mentioned bands 8 and 9 are brought in the pressing device under pressure for mutual contact.
  • aluminum dust produced by the cleaning process can be removed at intervals from the housing 7 or from the lower housing part 13.
  • Embodiment two rollers 19 and 20 rotatably mounted.
  • the two rollers 19 and 20 are arranged parallel to each other and separated by an adjustable gap. The size of the gap can be adjusted by changing the distance of the rollers 19 and 20 from each other.
  • the two bands 8 and 9 are passed under mutual contact through the gap between the two rollers 19 and 20 and thereby pressed together.
  • the two rollers 19 and 20 are pressurized.
  • the pressing device 4 may also be equipped with a slot nozzle with a variable slot.
  • the bands 8 and 9 are then performed by the method described by the slot of the slot and
  • the pressure exerted by the two rollers 19 and 20 and the slot nozzle on the bands 8 and 9, can be set so large that the generated one-piece band 1 1 is simultaneously reduced in thickness, with advantage by an amount, between 5% and 20%. This measure depends on the one hand on the thickness of the bands 8 and 9 as starting materials and on the desired thickness of the one-piece band 1 1 as an end product.

Abstract

Disclosed are a method and devices for fixedly connecting an aluminum strip (9) to a copper strip (8) by a metallurgical process. In said method, the two strips (8, 9), which are moved parallel to one another in the longitudinal direction thereof, are continuously freed of oxides in a cleaning device (3) under protective gas on the faces thereof intended to be applied against one another, and are then fed to a pressing device (4) in which they are pressed against one another by way of the cleaned faces thereof and are connected to one another to form a single-piece strip (11). Both strips (8, 9) are guided all the way to the pressing device (4) and therethrough without interruption under protective gas, to which end the cleaning device (3) and the pressing device (4) are combined to form a unit having a housing (7) that surrounds a joint space. Both strips (8, 9) as well as the single-piece strip (11) are pulled through the cleaning device (3) and the pressing device (4) by means of a take-off apparatus (5) arranged downstream of the pressing device (4).

Description

VERFAHREN UND VORRICHTUNGEN ZUM VERBINDEN EINES ALUMINIUMBANDES MIT EINEM KUPFERBAND UNTER SCHUTZGAS  METHOD AND DEVICES FOR CONNECTING AN ALUMINUM TAPE WITH A COPPER TAPE UNDER PROTECTIVE GAS
Beschreibung description
Die Erfindung bezieht sich auf ein Verfahren zum metallurgisch festen Verbinden eines Bandes aus Aluminium mit einem Band aus Kupfer, mit welchem die beiden in ihrer Längsrichtung parallel zueinander bewegten Bänder an ihren zur gegenseitigen Anlage bestimmten Flächen in einer Reinigungsvorrichtung unter Schutzgas The invention relates to a method for metallurgically bonding a strip of aluminum with a band of copper, with which the two in their longitudinal direction parallel to each other moved bands at their intended for mutual contact surfaces in a cleaning device under inert gas
kontinuierlich von Oxiden befreit und anschließend einer Andrückvorrichtung zugeführt werden, in der sie mit ihren gereinigten Flächen aneinander gedrückt und zu einem einteiligen Band miteinander verbunden werden (EP 1 469 486 Bl ). continuously freed from oxides and then fed to a pressing device in which they are pressed together with their cleaned surfaces and joined together to form a one-piece band (EP 1 469 486 Bl).
Ein mit einem solchen Verfahren hergestelltes, aus zwei unterschiedlichen Metallen bestehendes, einteiliges Band wird insbesondere im Hochfrequenzbereich eingesetzt. Durch den bekannten Effekt der Stromverdrängung werden beispielsweise in Leitern von Hochfrequenzkabeln nur relativ dünne Kupferschichten benötigt. Das mit dem geschilderten Verfahren mit dem Kupferband verbundene Aluminiumband dient nur zur Stabilisierung desselben und quasi als Träger für das Kupferband. Damit der metallurgisch feste Verbund erhalten werden kann, müssen die Bänder und A made of two different metals, one-piece band produced by such a method is used in particular in the high frequency range. Due to the known effect of current displacement, for example, only relatively thin copper layers are required in conductors of high-frequency cables. The aluminum strip connected to the described method with the copper strip serves only to stabilize the same and, as it were, as a carrier for the copper strip. In order for the metallurgically strong bond can be obtained, the bands and
insbesondere das leicht und schnell oxidierende Aluminiumband von Oxiden befreit werden. In particular, the easily and quickly oxidizing aluminum strip of oxides are freed.
Das wird mit dem Verfahren nach der eingangs erwähnten EP 1 469 486 B l dadurch erreicht, daß beide Bänder in einer Reinigungsvorrichtung unter Einsatz von rotierenden Bürsten an den zur gegenseitigen Anlage bestimmten Flachseiten unter Schutzgas, beispielsweise Argon, von Oxidschichten befreit werden. Durch das Schutzgas wird eine Neubildung von Oxiden verhindert. Die beiden Bänder werden dann durch einen Spalt zwischen zwei Walzen eines Walzwerks hindurchgeführt und dabei metallurgisch fest miteinander verbunden. Gleichzeitig wird die Dicke des einteiligen Bandes reduziert. Die beiden Bänder und damit auch das einteilige Band werden durch die angetriebenen Walzen des Walzwerks in ihrer Längsrichtung bewegt. Die This is achieved by the method according to the above-mentioned EP 1 469 486 B l, characterized in that both belts are freed of oxide layers in a cleaning device using rotating brushes on the intended for mutual investment flat sides under a protective gas, for example argon. The inert gas prevents new formation of oxides. The two bands are then passed through a gap between two rolls of a rolling mill and thereby metallurgically firmly connected. At the same time, the thickness of the one-piece band reduced. The two belts and thus also the one-piece belt are moved in their longitudinal direction by the driven rollers of the rolling mill. The
Schutzgaszone endet bei der hier eingesetzten Reinigungsvorrichtung an deren Ausgang. Auf dem Weg der beiden Bänder von derselben zu den Walzen des Protective gas zone ends at the cleaning device used here at the output. On the way of the two bands of the same to the rolls of the
Walzwerks kann insbesondere das Aluminiumband schnell wieder oxidieren, so daß ein kontinuierlich fester metallurgischer Verbund mit dem Kupferband nicht garantiert werden kann. In particular, the rolling mill can quickly reoxidize the aluminum strip, so that a continuous solid metallurgical bond with the copper strip can not be guaranteed.
Der Erfindung liegt die Aufgabe zugrunde, das eingangs geschilderte Verfahren so weiterzubilden, daß eine erneute Oxidbildung an den beiden Bändern vor ihrem Zusammenführen ausgeschlossen werden kann. The invention has the object of developing the above-described method so that a new oxide formation on the two bands can be excluded prior to their merger.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, This object is achieved according to the invention characterized
- daß die beiden Bänder bis zur Andrückvorrichtung einschließlich ohne  - That the two bands up to the pressing without including
Unterbrechung unter Schutzgas geführt werden, wozu die Reinigungsvorrichtung und die Andrückvorrichtung zu einer Einheit mit einem einen zusammenhängenden Raum umschließenden Gehäuse zusammengefaßt werden, und  Are performed interruption under protective gas, including the cleaning device and the pressing device are combined to form a unit with a continuous space enclosing housing, and
- daß die beiden Bänder bzw. das einteilige Band mittels einer hinter der  - That the two bands or the one-piece band by means of a behind the
Andrückvorrichtung angeordneten Abzugseinrichtung durch die  Pressing device arranged withdrawal device through the
Reinigungsvorrichtung und die Andrückvorrichtung gezogen werden.  Cleaning device and the pressing device are pulled.
Das bei diesem Verfahren eingesetzte„Schutzgas" ist ein spezielles Gas, welches die Bildung von Oxiden verhindert. Entsprechende Gase sind beispielsweise Edelgase, inerte Gase und reduzierende Gase. Bei Einsatz des Verfahrens kann die Bildung von Oxidschichten auf den beiden zu verbindenden Bändern, insbesondere auf dem Aluminiumband, ausgeschlossen werden, weil die beiden gereinigten Bänder so lange unter Schutzgas bewegt werden, bis sie in der Andrückvorrichtung fest aneinander liegen und gegeneinander gepreßt werden. Das wird im wesentlichen dadurch ermöglicht, daß die Abmessungen der Andrückvorrichtung klein gehalten werden können, weil die beiden Bänder bzw. das erzeugte, einteilige Band nicht durch angetriebene, großvolumige Walzen bewegt, sondern von einer separaten The "shielding gas" used in this process is a special gas which prevents the formation of oxides, such as noble gases, inert gases and reducing gases, etc. By using the process, the formation of oxide layers on the two tapes to be joined, in particular on The aluminum strip can be excluded because the two cleaned strips are moved under protective gas until they lie firmly against each other in the pressing device and are pressed against one another. This is made possible essentially by the fact that the dimensions of the pressing device can be kept small both belts or the produced one-piece belt is not moved by driven, large-volume rollers, but by a separate
Abzugseinrichtung gezogen werden. In der Andrückvorrichtung können Pulling device to be pulled. In the pressing device can
dementsprechend beispielsweise zwei drehbar gelagerte Rollen mit relativ kleinen Abmessungen eingesetzt werden, die durch einen einstellbaren Spalt voneinander getrennt sind, durch welchen die Bänder hindurchgezogen werden. Als Accordingly, for example, two rotatably mounted rollers with relatively small Dimensions are used, which are separated by an adjustable gap, through which the bands are pulled through. When
Andrückvorrichtung kann aber beispielsweise auch eine Schlitzdüse mit einstellbarem Schlitz eingesetzt werden. Ein eine solche Andrückvorrichtung umschließendes Butrückvorrichtung can also be used, for example, a slot with adjustable slot. A such pressing device enclosing
Gehäuse kann relativ kleine Abmessungen haben und leicht mit einem die Housing can have relatively small dimensions and easily with a
Reinigungsvorrichtung umschließenden Gehäuse zu einem einteiligen Gehäuse verbunden werden. Das einteilige Gehäuse ist bei Durchführung des Verfahrens mit Schutzgas gefüllt. Die eine Bildung von Oxidschichten verhindernde Abdeckung der beiden Bänder mit Schutzgas ist bei diesem Verfahren erst aufgehoben, wenn das einteilige Band, in dem die beiden Bänder metallurgisch fest miteinander verbunden sind, die Andrückeinrichtung verläßt. Cleaning device enclosing housing to be connected to a one-piece housing. The one-piece housing is filled in carrying out the process with inert gas. The formation of oxide layers preventing cover of the two bands with inert gas is only repealed in this process, when the one-piece band, in which the two bands are metallurgically firmly connected, leaves the pressing device.
Das Verfahren nach der Erfindung wird im folgenden anhand der Zeichnungen als Ausführungsbeispiel erläutert. The method according to the invention will be explained below with reference to the drawings as an exemplary embodiment.
Es zeigen: Show it:
Fig. 1 in schematischer Darstellung eine Anlage zur Durchführung des Verfahrens nach der Erfindung.  Fig. 1 in a schematic representation of a plant for carrying out the method according to the invention.
Fig. 2 eine Einzelheit aus Fig. 2 in genauerer Ausführung.  Fig. 2 shows a detail of Fig. 2 in more detail.
Die Anlage zum Verbinden eines Aluminiumbandes mit einem Kupferband weist zwei drehbar gelagerte Spulen 1 und 2, eine Reinigungsvorrichtung 3, eine The system for connecting an aluminum strip with a copper strip has two rotatably mounted coils 1 and 2, a cleaning device 3, a
Andrückvorrichtung 4, eine Abzugseinrichtung 5 und eine Aufwickelspule 6 auf. Die Abzugseinrichtung 5 ist mit Vorteil als Raupenabzug ausgeführt. Reinigungsvorrichtung 3 und Andrückvorrichtung 4 sind in einem gemeinsamen Gehäuse 7 angeordnet, das bei Durchführung des Verfahrens mit einem Schutzgas gefüllt ist, beispielsweise mit Argon. Auf der Spule 1 ist ein Kupferband 8 aufgewickelt, während auf der Spule 2 ein Aluminiumband 9 aufgewickelt ist. Beide Bänder 8 und 9 sind vorzugsweise gleich breit Pressing device 4, a trigger device 5 and a take-up reel 6. The deduction device 5 is advantageously designed as a caterpillar deduction. Cleaning device 3 and pressure device 4 are arranged in a common housing 7, which is filled in carrying out the process with a protective gas, for example with argon. On the spool 1, a copper tape 8 is wound, while on the spool 2, an aluminum strip 9 is wound. Both bands 8 and 9 are preferably the same width
Das Verfahren nach der Erfindung wird beispielsweise wie folgt durchgeführt: The method according to the invention is carried out, for example, as follows:
Die beiden Bänder 8 und 9 werden mittels der Abzugseinrichtung 5 von ihren Spulen 1 und 2 in Richtung des Pfeiles 10 gezogen und durch die Reinigungsvorrichtung 3 und die Andrückvorrichtung 4 hindurchgezogen. In der Reinigungsvorrichtung 3 werden die zur gegenseitigen Anlage bestimmten Flächen der beiden Bänder 8 und 9 im kontinuierlichen Durchlauf von Verunreinigungen und insbesondere von oxidischen Stoffen befreit. Das geschieht unter Schutzgas, so daß sich nach dem Verlassen der Reinigungsvorrichtung 3 auf den gereinigten Flächen der Bänder 8 und 9 keine The two bands 8 and 9 are pulled by means of the trigger device 5 of their coils 1 and 2 in the direction of the arrow 10 and through the cleaning device 3 and the pressing device 4 pulled through. In the cleaning device 3, the areas intended for mutual contact of the two belts 8 and 9 are freed of impurities and in particular of oxidic substances in a continuous pass. This is done under inert gas, so that after leaving the cleaning device 3 on the cleaned surfaces of the bands 8 and 9 no
Oxidschichten bilden können. Zur Aufrechterhaltung der Schutzgasabdeckung im Gehäuse 7 hat dasselbe abgedichtete Einlässe zum Durchführen der beiden Bänder 8 und 9. Can form oxide layers. To maintain the protective gas cover in the housing 7 has the same sealed inlet for passing the two bands 8 and 9th
Die beiden gereinigten Bänder 8 und 9 werden innerhalb des Gehäuses 7 unter weiter bestehender Schutzgasabdeckung in der Andrückvorrichtung 4 zusammengeführt und gegeneinander gedrückt, so daß sie metallurgisch fest zu einem einteiligen Band 1 1 miteinander verbunden werden. Das einteilige Band 1 1 verläßt das Gehäuse 7 durch einen abgedichteten Auslaß. Es kann abschließend auf die Spule 6 aufgewickelt werden. The two cleaned belts 8 and 9 are brought together within the housing 7 under further existing protective gas cover in the pressing device 4 and pressed against each other, so that they are metallurgically firmly connected to a one-piece band 1 1 together. The one-piece belt 1 1 leaves the housing 7 through a sealed outlet. It can finally be wound onto the spool 6.
Die Einheit aus Gehäuse 7, Reinigungsvorrichtung 3 und Andrückvorrichtung 4 kann beispielsweise gemäß Fig. 2 aufgebaut sein. Das in Fig. 1 einteilig dargestellte Gehäuse 7 ist bei der Ausführungsform nach Fig. 2 in miteinander verbundene Einzelteile aufgeteilt. Die Reinigungsvorrichtung 3 besteht demnach aus einem oberen The unit of housing 7, cleaning device 3 and pressure device 4 may be constructed, for example, as shown in FIG. The housing 7 shown in one piece in Fig. 1 is divided in the embodiment of FIG. 2 in interconnected items. The cleaning device 3 therefore consists of an upper
Gehäuseteil 12 und einem unteren Gehäuseteil 13. In den beiden Gehäuseteilen 12 und 13 ist jeweils beispielsweise eine Anzahl von um ihre Achse drehbaren Housing part 12 and a lower housing part 13. In the two housing parts 12 and 13 are each, for example, a number of rotatable about its axis
Schleifscheiben bzw. Metallbürsten 14 bzw. 15 angeordnet. Die Andrückvorrichtung 4 weist ein eigenes Gehäuse 1 6 auf. Die beiden Gehäuseteile 12 und 13 der Grinding wheels or metal brushes 14 and 15 are arranged. The pressing device 4 has its own housing 1 6. The two housing parts 12 and 13 of
Reinigungsvorrichtung 3 sind über Kanäle 1 7 und 18 mit dem Gehäuse 16 der Cleaning device 3 are via channels 1 7 and 18 with the housing 16 of
Andrückvorrichtung 4 hermetisch dicht verbunden, so daß der einteilig Pressing device 4 hermetically sealed, so that the one-piece
zusammenhängende, mit Schützgas gefüllte Raum/ealisiert ist, der in Fig. 2 durch eine strichpunktierte Linie als Begrenzung gekennzeichnet ist, welche dem Gehäuse 7 gemäß Fig. 1 entspricht. contiguous, filled with contact gas space / is realized, which is characterized in Fig. 2 by a dashed line as a boundary, which corresponds to the housing 7 of FIG.
Bei Verwendung der Anordnung nach Fig. 2 werden Reinigungsvorrichtung 3 und Andrückvorrichtung 4 beispielsweise wie folgt von den Bändern 8 und 9 durchlaufen: Das Kupferband 8 gelangt zunächst in das obere Gehäuseteil 12 der When using the arrangement according to FIG. 2, cleaning device 3 and pressing device 4 are passed through, for example, as follows by belts 8 and 9: The copper strip 8 first passes into the upper housing part 12 of
Reinigungsvorrichtung 3, während das Aluminiumband 9 durch das untere Gehäuseteil 13 desselben gezogen wird. Das Kupferband 8 wird dabei beispielsweise an Cleaning device 3, while the aluminum strip 9 is pulled through the lower housing part 13 thereof. The copper strip 8 is doing, for example
Metallbürsten 14 entlang gezogen, während das Aluminiumband 9 mit Vorteil an Schleifscheiben 15 entlang gezogen wird. Beide Bänder 8 und 9 werden dadurch an den Flachseiten, die zur gegenseitigen Anlage gebracht werden sollen, insbesondere von Oxiden befreit. Es können auch für beide Bänder 8 und 9 Metallbürsten oder Schleifscheiben oder auch andere Bauteile eingesetzt werden, mittels derer die beschriebene Reinigung durchgeführt werden kann. Pulled metal brush 14 along while the aluminum strip 9 is advantageously pulled along grinding wheels 15 along. Both bands 8 and 9 are thereby freed on the flat sides, which are to be brought to mutual contact, in particular of oxides. It can also be used for both bands 8 and 9 metal brushes or grinding wheels or other components by means of which the described cleaning can be performed.
Die Metallbürsten 14 bzw. Schleifscheiben 15 reinigen die Oberflächen der beiden Bänder 8 und 9 im kontinuierlichen Durchlauf und entfernen dabei insbesondere oxidische Materialien. Die beiden Bänder 8 und 9 werden durch diesen The metal brushes 14 and grinding wheels 15 clean the surfaces of the two belts 8 and 9 in a continuous pass and remove in particular oxide materials. The two bands 8 and 9 are through this
Reinigungsprozeß gleichzeitig mit einstellbarer Temperatur erwärmt. Die gereinigten Bänder 8 und 9, die damit auf der zur gegenseitigen Anlage bestimmten flachen Seite jeweils metallisch blank sind, werden durch die Kanäle 17 und 18, die lückenlos mit der Reinigungsvorrichtung 3 und der Andrückvorrichtung 4 verbunden sind, zu der Cleaning process heated simultaneously with adjustable temperature. The cleaned bands 8 and 9, which are each on the intended for mutual investment flat side metallic blank are through the channels 17 and 18, which are completely connected to the cleaning device 3 and the pressing device 4, to the
Andrückvorrichtung 4 geführt. Die wie erwähnt erwärmten Bänder 8 und 9 werden in der Andrückvorrichtung unter Druck zur gegenseitigen Anlage gebracht. Durch den Reinigungsvorgang entstandener Aluminiumstaub kann aus Sicherheitsgründen in zeitlichen Abständen aus dem Gehäuse 7 bzw. aus dem unteren Gehäuseteil 13 entfernt werden. Pressing device 4 out. The heated as mentioned bands 8 and 9 are brought in the pressing device under pressure for mutual contact. For safety reasons, aluminum dust produced by the cleaning process can be removed at intervals from the housing 7 or from the lower housing part 13.
Im Gehäuse 1 6 der Andrückvorrichtung 4 sind entsprechend der dargestellten In the housing 1 6 of the pressing device 4 are shown in accordance with the
Ausführungsform zwei Rollen 19 und 20 drehbar gelagert. Die beiden Rollen 19 und 20 sind parallel zueinander angeordnet und durch einen einstellbaren Spalt voneinander getrennt. Die Größe des Spalts kann durch Änderung des Abstandes der Rollen 19 und 20 voneinander eingestellt werden. Die beiden Bänder 8 und 9 werden unter gegenseitiger Anlage durch den Spalt zwischen den beiden Rollen 19 und 20 hindurchgeführt und dabei zusammengepreßt. Dazu werden die beiden Rollen 19 und 20 mit Druck beaufschlagt. Statt der Rollen 19 und 20 kann die Andrückvorrichtung 4 auch mit einer Schlitzdüse mit veränderbarem Schlitz ausgerüstet sein. Die Bänder 8 und 9 werden dann mit dem geschilderten Verfahren durch den Schlitz der Schlitzdüse geführt und Embodiment two rollers 19 and 20 rotatably mounted. The two rollers 19 and 20 are arranged parallel to each other and separated by an adjustable gap. The size of the gap can be adjusted by changing the distance of the rollers 19 and 20 from each other. The two bands 8 and 9 are passed under mutual contact through the gap between the two rollers 19 and 20 and thereby pressed together. For this purpose, the two rollers 19 and 20 are pressurized. Instead of the rollers 19 and 20, the pressing device 4 may also be equipped with a slot nozzle with a variable slot. The bands 8 and 9 are then performed by the method described by the slot of the slot and
zusammengepreßt, so daß sich das einteilige Band 1 1 ergibt. compressed, so that the one-piece band 1 1 results.
Der Druck, den die beiden Rollen 19 und 20 bzw. die Schlitzdüse auf die Bänder 8 und 9 ausüben, kann so groß eingestellt werden, daß das erzeugte einteilige Band 1 1 gleichzeitig in seiner Dicke reduziert wird, und zwar mit Vorteil um einen Betrag, der zwischen 5 % und 20 % liegt. Diese Maßnahme hängt einerseits von der Dicke der Bänder 8 und 9 als Ausgangsmaterialien und von der gewünschten Dicke des einteiligen Bandes 1 1 als Endprodukt ab. The pressure exerted by the two rollers 19 and 20 and the slot nozzle on the bands 8 and 9, can be set so large that the generated one-piece band 1 1 is simultaneously reduced in thickness, with advantage by an amount, between 5% and 20%. This measure depends on the one hand on the thickness of the bands 8 and 9 as starting materials and on the desired thickness of the one-piece band 1 1 as an end product.

Claims

Patentansprüche claims
1 . Verfahren zum metallurgisch festen Verbinden eines Bandes aus Aluminium mit einem Band aus Kupfer, mit welchem die beiden in ihrer Längsrichtung parallel zueinander bewegten Bänder an ihren zur gegenseitigen Anlage bestimmten Flächen in einer Reinigungsvorrichtung unter Schutzgas kontinuierlich von Oxiden befreit und anschließend einer Andrückvorrichtung zugeführt werden, in der sie mit ihren gereinigten Flächen aneinander gedrückt und zu einem einteiligen Band miteinander verbunden werden, dadurch gekennzeichnet, 1 . Method for metallurgically bonding a strip of aluminum to a strip of copper by means of which the two strips, moved parallel to one another in their longitudinal direction, are continuously freed of oxides at their surfaces intended for mutual contact in a cleaning device under protective gas and subsequently supplied to a pressing device they are pressed together with their cleaned surfaces and joined together to form a one-piece band, characterized
- daß die beiden Bänder (8,9) bis zur Andrückvorrichtung (4) einschließlich ohne Unterbrechung unter Schutzgas geführt werden, wozu die Reinigungsvorrichtung (3) und die Andrückvorrichtung (4) zu einer Einheit mit einem einen  - That the two bands (8,9) to the pressing device (4) are performed without interruption under protective gas, including the cleaning device (3) and the pressing device (4) to form a unit with a
zusammenhängenden Raum umschließenden Gehäuse (7) zusammengefaßt werden, und  contiguous space enclosing housing (7) are summarized, and
- daß die beiden Bänder (8,9) bzw. das einteilige Band (1 1 ) mittels einer hinter der Andrückvorrichtung (4) angeordneten Abzugseinrichtung (5) durch die  - That the two bands (8,9) or the one-piece band (1 1) by means of a behind the pressing device (4) arranged withdrawal device (5) through the
Reinigungsvorrichtung (3) und die Andrückvorrichtung (4) gezogen werden.  Cleaning device (3) and the pressing device (4) are pulled.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß Bänder (8,9) mit 2. The method according to claim 1, characterized in that bands (8,9) with
gleicher Breite eingesetzt werden.  be used the same width.
3. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 , dadurch 3. Apparatus for carrying out the method according to claim 1, characterized
gekennzeichnet, daß in der Andrückvorrichtung1 (4) zwei durch einen in seinen Abmessungen veränderbaren Spalt voneinander getrennte Rollen ( 19,20) drehbar angeordnet sind, durch welchen die Bänder (8,9) hindurchgezogen werden. characterized in that in the pressing device 1 (4) two rollers (19, 20) which are separated from one another by a gap whose dimensions can be changed are rotatably arranged, through which the belts (8, 9) are pulled.
4. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 , dadurch 4. Apparatus for carrying out the method according to claim 1, characterized
gekennzeichnet, daß die Andrückvorrichtung (4) als Schlitzdüse mit veränderbarem Schlitz ausgeführt ist.  characterized in that the pressing device (4) is designed as a slot nozzle with a variable slot.
EP11808161.1A 2010-12-10 2011-11-23 Method and devices for connecting an aluminium strip to a copper strip under protective gas Withdrawn EP2648871A1 (en)

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DE102010054016A DE102010054016A1 (en) 2010-12-10 2010-12-10 Method for connecting an aluminum strip to a copper strip
PCT/EP2011/005888 WO2012076120A1 (en) 2010-12-10 2011-11-23 Method and devices for connecting an aluminium strip to a copper strip under protective gas

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CN103249516A (en) 2013-08-14

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