EP0542382B1 - Method for producing rolled stock from oxygen-free copper - Google Patents
Method for producing rolled stock from oxygen-free copper Download PDFInfo
- Publication number
- EP0542382B1 EP0542382B1 EP92250020A EP92250020A EP0542382B1 EP 0542382 B1 EP0542382 B1 EP 0542382B1 EP 92250020 A EP92250020 A EP 92250020A EP 92250020 A EP92250020 A EP 92250020A EP 0542382 B1 EP0542382 B1 EP 0542382B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- deformation
- plant
- oxygen
- strip
- 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.)
- Expired - Lifetime
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 33
- 229910052802 copper Inorganic materials 0.000 title claims description 25
- 239000010949 copper Substances 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000005266 casting Methods 0.000 claims description 35
- 238000005096 rolling process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0697—Accessories therefor for casting in a protected atmosphere
-
- 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
- B21B1/46—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 metal immediately subsequent to continuous casting
- B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- 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
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
-
- 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
- B21B2003/005—Copper or its alloys
Definitions
- the invention relates to a method and a device for carrying out the method for producing rolling stock from oxygen-free copper, in particular wire in a casting and rolling plant, consisting of a melting plant, a casting plant and a downstream continuous rolling mill.
- a method and a device corresponding to this type can be found in US-A-4290823.
- the aim of the present invention is to provide a method and a device for carrying out the method, with which it is possible to produce oxygen-free copper wire in-line in a casting and rolling plant of the generic type.
- the basis of the invention is the knowledge that the phenomenon of hydrogen disease known in the art is not relevant to oxygen-free copper.
- the present invention proposes that, starting from the method according to the preamble of claim 1, the ingot leaving the casting plant in a straight line the horizontal is bent after it has been reduced in at least one deformation stitch, the deformation stitch of the ingot and the melting and casting process taking place in a protective gas atmosphere.
- the invention therefore consists in reducing the grain sizes of the copper by deforming the copper ingot immediately behind the mold and thereby preventing larger hydrogen bubbles from forming at the grain boundaries.
- the fine structure largely prevents the deep penetration of the hydrogen and thus represents an effective remedy against the crack and fracture sensitivity of the copper bar.
- the first deformation stitch is preferably carried out close behind the casting installation.
- the bending of the copper ingot after the first or, if necessary, several reduction stitches in a protective gas atmosphere is harmless due to the reduced grain size and no longer leads to the cracks that could not previously be prevented.
- a casting and rolling plant for carrying out the method according to the invention is characterized by the combination of features according to claim 4.
- the deformation unit arranged close to the casting machine is thus arranged at the same inclination as the casting system, it being possible, if appropriate, to provide further devices for preparing the ingot (edge milling device, driver, etc.) between the casting system and the first deformation framework.
- the single drawing figure shows a schematic representation of a casting and rolling plant according to the invention. It consists of the melting furnace 1, the holding furnace 2, the pouring channel 3, the tundish 4, the pouring spout 5 of which protrudes into the area of the strip casting mold 6, the driver 7, the edge processing device 8 and the deformation frame 9.
- the melt in the melting furnace 1 and also in the holding furnace 2 is covered with charcoal to avoid oxygen absorption.
- the invention also provides for the melting furnace 1, the holding furnace 2, the casting trough 3 and the casting trough 4 to be housed and these units to be operated in a protective gas atmosphere.
- the housing is marked with H. All facilities are as tight as possible and - contrary to the usual gas heating - are inductively heated.
- the Nitrogen is preferably blown in the direction of the material flow and flows towards the tundish, where it emerges together with the molten copper.
- the nitrogen flowing out of the tundish 4 protects the inlet area of the belt casting mold 6 against oxygen absorption due to its specific weight against air.
- mudguard structures on the side can cause the nitrogen to have a longer dwell time in this area and thus offer protection from oxygen.
- the housings continue behind the belt casting mold 6; they include driver 7, edge processing device 8 and deformation stand 9 and possibly also the bending area 10. Following the deformation stand 9, the ingot in the turning area 10 is diverted from the casting direction into the horizontal, as is in accordance with the teaching of the invention.
- the system works as follows: The copper melt located in the melting furnace 1 is temporarily stored in the holding furnace 2 and passed through the trough 3 into the tundish 4. All units are sealed in a housing H, a protective gas atmosphere is created inside the housing H. From the tundish 4, through which nitrogen flows, the copper melt reaches the strip casting mold, in which a copper ingot is poured between the strip-shaped mold sides, which leaves the strip casting mold 6 in the casting direction after solidification.
- the copper bar which has a temperature of 980 to 1000 ° C., is driven into the Edge processing device 8, a milling machine, introduced where the edges of the billet are chamfered.
- the copper bar prepared in this way is then introduced into the forming frame.
- the construction of the deformation stand must have features which are unusual in the case of roughing stands in copper wire systems.
- the tip of the copper bar, on which the starting piece is still located, must be able to pass through the deformation frame 9 without deformation. Therefore, the rollers of the deformation stand 9 are first opened. When the desired strand speed is reached, the rolls are automatically closed until the preselected reduction is reached. For this purpose it is necessary that the speed of the rollers is determined and regulated depending on the respective deformation. This can be achieved by measuring the speed and current consumption of the driver 7.
- a reduction in the stitch of approx. 35% takes place in the deformation stand 9.
- the reduced copper ingot in the bending area 10 of the system is moved horizontally on a roller table and reduced to wire in further rolling stands of the continuous rolling mill 11. This copper wire produced in this way is bundled at the end (not shown) of the casting and rolling system.
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Durchführung des Verfahrens zum Herstellen von Walzgut aus sauerstofffreiem Kupfer, insbesondere Draht in einer Gießwalzanlage, bestehend aus Erschmelzungsanlage, einer Gießanlage sowie einem nachgeordneten kontinuierlichen Walzwerk. Ein Verfahren und eine Vorrichtung entsprechend dieser Gattung sind der US-A-4290823 zu entnehmen.The invention relates to a method and a device for carrying out the method for producing rolling stock from oxygen-free copper, in particular wire in a casting and rolling plant, consisting of a melting plant, a casting plant and a downstream continuous rolling mill. A method and a device corresponding to this type can be found in US-A-4290823.
Zur Herstellung von Kupferdraht werden seit ca. 25 Jahren Anlagen gebaut, die in kontinuierlichem Fluß aus der flüssigen Schmelze über eine Gießmaschine mit mitlaufenden Kokillen und über ein kontinuierliches Walzwerk mit nachgeordneter Draht-Entzunderungsstrecke Kupferdraht erzeugen. Dieser Kupferdraht wird am Ende der Anlage zu Ringen von bis zu 10 Tonnen aufgewickelt.For the production of copper wire, plants have been built for approx. 25 years that produce copper wire in a continuous flow from the liquid melt using a casting machine with moving molds and a continuous rolling mill with a downstream wire descaling section. At the end of the plant, this copper wire is wound into rings of up to 10 tons.
Bei der Erschmelzung, dem Vergießen und dem anschließenden Walzen nimmt der Barren bzw. der Kupferdraht Sauerstoff auf, der für manche Zwecke unschädlich ist, jedoch für viele Verwendungszwecke, insbesondere für den Einsatz in der Elektronik sich schädlich auswirkt. Für diese besonderen Verwendungszwecke ist es unumgänglich, den Sauerstoffgehalt im Kupferdraht zu reduzieren oder auf Null zu bekommen. Die vorliegende Erfindung hat zum Ziel, ein Verfahren und eine Vorrichtung zur Durchführung des Verfahrens zu schaffen, mit der es möglich wird, sauerstofffreien Kupferdraht in-line in einer gattungsgemäßen Gießwalzanlage zu erzeugen.During melting, casting and subsequent rolling, the ingot or copper wire absorbs oxygen, which is harmless for some purposes, but has a detrimental effect for many uses, in particular for use in electronics. For this For special purposes, it is essential to reduce the oxygen content in the copper wire or to get it to zero. The aim of the present invention is to provide a method and a device for carrying out the method, with which it is possible to produce oxygen-free copper wire in-line in a casting and rolling plant of the generic type.
Grundlage der Erfindung ist die Erkenntnis, daß die in der Fachwelt bekannte Erscheinung der Wasserstoffkrankheit bei sauerstofffreiem Kupfer nicht relevant ist.The basis of the invention is the knowledge that the phenomenon of hydrogen disease known in the art is not relevant to oxygen-free copper.
Bei sauerstoffhaltigem Kupfer reagiert der Sauerstoff mit dem im Kupfer befindliche Wasserstoff in der Art, daß sich erhitzter Wasserdampf bildet. Dabei entstehen sehr hohe Drücke, die zu Rissen längs der Korngrenzen führen und zu Aufbrüchen und schließlich auch zum Zerbrechen eines gegossenen warmen Kupferbarrens führen können. In Verbindung mit den im Kupfer befindlichen Begleitelementen (Verunreinigungen), wird die Riß- bzw. Bruchgefahr, insbesondere beim Biegen des gegossenen warmen Barrens, noch erhöht.In the case of oxygen-containing copper, the oxygen reacts with the hydrogen in the copper in such a way that heated water vapor forms. This creates very high pressures, which can lead to cracks along the grain boundaries and lead to cracking and ultimately to the breaking of a cast, warm copper ingot. In connection with the accompanying elements (impurities) in the copper, the risk of cracking or breaking is increased, especially when bending the cast hot billet.
Auch in sauerstofffreiem Kupfer sind trotz Erschmelzen und Vergießen unter Schutzgas definierte Mengen Wasserstoff enthalten. Es muß jedoch verhindert werden, daß sich durch Vereinigung kleiner Wasserstoffblasen größere Wasserstoffblasen an den Korngrenzen bilden und zur Warmrissigkeit führen, insbesondere bei gleichzeitiger Biegung des warmen Kupferbarrens. Die Möglichkeit der Bildung unerwünschter größerer Wasserstoffblasen ist desto wahrscheinlicher, je mehr Zeit ab der Erstarrung des flüssigen Kupfers zur Verfügung steht.Even in oxygen-free copper, defined amounts of hydrogen are contained despite melting and casting under protective gas. However, it must be prevented that by combining small hydrogen bubbles larger hydrogen bubbles form at the grain boundaries and lead to hot cracking, especially when the warm copper bar is bent at the same time. The more time that is available after the liquid copper has solidified, the more likely it is that undesirable larger hydrogen bubbles will form.
Zur Lösung dieses Problems wird durch die vorliegende Erfindung vorgeschlagen, daß ausgehend vom Verfahren gemäß dem Obergriff des Anspruchs 1 der die Gießanlage geradlinig verlassende Barren in die Horizontale abgebogen wird, nachdem er in mindestens einem Verformungsstich reduziert wurde wobei der Verformungsstich des Barrens sowie der Schmelz- und Gießvorgang in Schutzgas-Atmosphäre stattfinden. Die Erfindung besteht also darin, durch Verformung des Kupferbarrens unmittelbar hinter der Kokille die Korngrößen des Kupfers zu verkleinern und dadurch zu verhindern, daß sich größere Wasserstoffblasen an den Korngrenzen bilden. Das feine Gefüge verhindert weitgehend das tiefe Eindringen des Wasserstoffes und stellt somit ein wirksames Mittel gegen die Riss- und Bruchempfindlichkeit des Kupferbarrens dar.To solve this problem, the present invention proposes that, starting from the method according to the preamble of
Vorzugsweise wird der erste Verformungsstich dicht hinter der Gießanlage durchgeführt. Das Abbiegen des Kupferbarrens nach dem ersten oder gegebenenfalls mehreren Reduzierstichen in Schutzgasatmosphäre ist nach der verkleinerten Korngröße unschädlich und führt nicht mehr zu den bislang nicht zu verhindernden Rissen.The first deformation stitch is preferably carried out close behind the casting installation. The bending of the copper ingot after the first or, if necessary, several reduction stitches in a protective gas atmosphere is harmless due to the reduced grain size and no longer leads to the cracks that could not previously be prevented.
Es hat sich gezeigt, daß besonders günstige Ergebnisse dann erzielt werden, wenn die Reduktion im ersten Verformungsstich zwischen 10 und 50 Prozent, vorzugsweise 35 Prozent beträgt.It has been shown that particularly favorable results are achieved if the reduction in the first deformation stitch is between 10 and 50 percent, preferably 35 percent.
Eine Gießwalzanlage zur Durchführung des erfindungsgemäßen Verfahrens ist gekennzeichnet durch die Kombination von Merkmalen nach Anspruch 4.A casting and rolling plant for carrying out the method according to the invention is characterized by the combination of features according to claim 4.
Die nahe zur Gießmaschine angeordnete Verformungseinheit ist somit in gleicher Neigung wie die Gießanlage angeordnet, wobei gegebenenfalls weitere Einrichtungen zur Barrenvorbereitung (Kantenfräseinrichtung, Treiber etc.) zwischen der Gießanlage und dem ersten Verformungsgerüst vorgesehen sein können.The deformation unit arranged close to the casting machine is thus arranged at the same inclination as the casting system, it being possible, if appropriate, to provide further devices for preparing the ingot (edge milling device, driver, etc.) between the casting system and the first deformation framework.
Als besonders vorteilhaft wird angesehen, daß auf der erfindungsgemäßen Anlage sowohl sauerstofffreies wie auch sauerstoffhaltiges Kupfer verarbeitet werden können.It is regarded as particularly advantageous that both oxygen-free and oxygen-containing copper can be processed in the system according to the invention.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben:
Die einzige Zeichnungsfigur zeigt in schematischer Darstellung eine Gießwalzanlage nach der Erfindung. Sie besteht aus dem Erschmelzungsofen 1, dem Warmhalteofen 2, der Gießrinne 3, der Gießwanne 4, deren Gießschnauze 5 in den Bereich der Bandgießkokille 6 ragt, dem Treiber 7, dem Kantenbearbeitungsgerät 8 und dem Verformungsgerüst 9.An embodiment of the invention is shown in the drawing and is described below:
The single drawing figure shows a schematic representation of a casting and rolling plant according to the invention. It consists of the
Bekanntlich wird zur Vermeidung der Sauerstoffaufnahme die Schmelze im Erschmelzungsofen 1 wie auch im Warmhalteofen 2 mit Holzkohle abgedeckt. Die Erfindung sieht darüber hinaus vor, den Schmelzofen 1, den Warmhalteofen 2, die Gießrinne 3 und die Gießwanne 4 einzuhausen und diese Aggregate in einer Schutzgas-Atmosphäre zu betreiben. Die Einhausung ist mit H bezeichnet. Alle Einrichtungen sind möglichst dicht und - entgegen sonst üblicher Gasbeheizung - induktiv beheizt. Der Stickstoff wird vorzugsweise in Materiallaufrichtung eingeblasen und strömt in Richtung Gießwanne, wo er zusammen mit dem geschmolzenen Kupfer austritt.As is known, the melt in the
Der aus der Gießwanne 4 ausströmende Stickstoff schützt aufgrund seines spezifischen Gewichtes gegenüber Luft den Einlaufbereich der Bandgießkokille 6 vor Sauerstoffaufnahme. Zusätzlich können seitlich angeordnete Schutzblechkonstruktionen bewirken, daß der Stickstoff in diesem Bereich eine längere Verweilzeit hat und somit sicher Schutz vor Sauerstoff bietet.The nitrogen flowing out of the tundish 4 protects the inlet area of the belt casting mold 6 against oxygen absorption due to its specific weight against air. In addition, mudguard structures on the side can cause the nitrogen to have a longer dwell time in this area and thus offer protection from oxygen.
Wenn auch der in der Bandgießkokille 6 erstarrte Strang nicht mehr der Gefahr der Sauerstoffaufnahme im Stranginneren ausgesetzt ist, so muß jedoch eine Sauerstoffverbindung mit der walzwarmen Strangoberfläche möglichst vermieden werden. Zu diesem Zweck setzen sich die Einhausungen hinter der Bandgießkokille 6 fort; sie umfassen Treiber 7, Kantenbearbeitungsgerät 8 und Verformungsgerüst 9 sowie ggf. auch den Abbiegebereich 10. Im Anschluß an das Verformungsgerüst 9 wird der Barren im Abbiegebereich 10 aus der Gießrichtung in die Horizontale umgeleitet, wie es der Lehre der Erfindung entspricht.Even if the strand solidified in the strip casting mold 6 is no longer exposed to the risk of oxygen absorption in the interior of the strand, however, an oxygen connection to the warm-rolled strand surface must be avoided as far as possible. For this purpose, the housings continue behind the belt casting mold 6; they include driver 7, edge processing device 8 and deformation stand 9 and possibly also the
Die Anlage arbeitet wie folgt: Die im Erschmelzungsofen 1 befindliche Kupferschmelze wird im Warmhalteofen 2 zwischengespeichert und über die Gießrinne 3 in die Gießwanne 4 geleitet. Alle Aggregate sind in einer Einhausung H abgeschlossen, im Inneren der Einhausung H ist eine Schutzgas- Atmosphäre geschaffen. Von der Gießwanne 4, die von Stickstoff durchströmt ist, gelangt die Kupferschmelze in die Bandgießkokille, in der zwischen den bandförmigen Kokillenseiten ein Kupferbarren gegossen wird, der nach Erstarrung die Bandgießkokille 6 in Gießrichtung verläßt. Der eine Temperatur von 980 bis 1000° C aufweisende Kupferbarren wird mit Hilfe des Treibers 7 in das Kantenbearbeitungsgerät 8, eine Fräsmaschine, eingeführt, wo die Kanten des Barrens abgeschrägt werden. Im Anschluß daran wird der so vorbereitete Kupferbarren in das Verformungsgerüst eingeführt.The system works as follows: The copper melt located in the
Durch den verfahrensbedingten geringen Abstand zwischen Bandgießkokille 6 und dem Verformungsgerüst 9 muß die Konstruktion des Verformungsgerüstes Merkmale aufweisen, die an sich bei Vorwalzgerüsten in Kupferdrahtanlagen unüblich sind. So muß die Spitze des Kupferbarrens, an der sich noch das Anfahrstück befindet, ohne Verformung das Verformungsgerüst 9 passieren können. Deshalb sind die Walzen des Verformungsgerüstes 9 zunächst aufgefahren. Bei Erreichen der gewünschten Stranggeschwindigkeit werden die Walzen automatisch zugefahren, bis die vorgewählte Reduktion erreicht ist. Zu diesem Zweck ist es erforderlich, daß die Geschwindigkeit der Walzen in Abhängigkeit von der jeweiligen Verformung bestimmt und geregelt wird. Dies läßt sich durch Messen von Geschwindigkeit und Stromaufnahme des Treibers 7 erreichen.Due to the process-related small distance between the strip casting mold 6 and the deformation stand 9, the construction of the deformation stand must have features which are unusual in the case of roughing stands in copper wire systems. The tip of the copper bar, on which the starting piece is still located, must be able to pass through the deformation frame 9 without deformation. Therefore, the rollers of the deformation stand 9 are first opened. When the desired strand speed is reached, the rolls are automatically closed until the preselected reduction is reached. For this purpose it is necessary that the speed of the rollers is determined and regulated depending on the respective deformation. This can be achieved by measuring the speed and current consumption of the driver 7.
Im Verformungsgerüst 9 erfolgt eine Stichabnahme von ca. 35 %. Nach verlassen des Verformungsgerüstes 9 wird der reduzierte Kupferbarren im Abbiegebereich 10 der Anlage auf einem Rollgang in die Horizontale umgeführt und in weiteren Walzgerüsten der kontinuierlichen Walzstraße 11 zu Draht reduziert. Dieser so erzeugte Kupferdraht wird am (nicht dargestellten Ende) der Gießwalzanlage zu Bunden gelegt.A reduction in the stitch of approx. 35% takes place in the deformation stand 9. After leaving the deformation stand 9, the reduced copper ingot in the
Claims (4)
- A method for producing rolled stock from oxygen-free copper, in particular wire, in a cast-rolling plant, consisting of a smelting plant (1), a casting mould (6) and a subsequent continuous rolling mill (11),
characterised in that the bar which leaves the casting plant (3, 4, 6) in rectilinear fashion is bent off into the horizontal once it has been reduced in at least one deformation pass, with the deformation pass of the bar and the smelting and casting operations taking place in a protective gas atmosphere. - A method according to Claim 1, characterised in that the first deformation pass is effected closely after the casting plant (3, 4, 6).
- A method according to Claims 1 and 2,
characterised in that the reduction in the first deformation pass is between 10 and 50%, preferably 35%. - A cast-rolling plant for producing rolled stock from oxygen-free copper, in particular wire, consisting of a smelting plant (1), a strip-casting mould (6) and a subsequent continuous rolling mill (11),
characterised by the arrangement of at least one deformation stand (9) after the strip-casting mould (6), the rolling axis of the deformation stand (9) being coaxial to the central longitudinal axis of the strip-casting mould (6) and the region between the smelting furnace (1) and strip-casting mould (6) and between the strip-casting mould (6) and the first deformation stand(s) (9) being located under a doghouse (H) which is provided with means for producing a protective gas atmosphere in the interior thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4136085 | 1991-10-30 | ||
| DE4136085A DE4136085C2 (en) | 1991-10-30 | 1991-10-30 | METHOD FOR PRODUCING OXYGEN-FREE COPPER WIRE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0542382A1 EP0542382A1 (en) | 1993-05-19 |
| EP0542382B1 true EP0542382B1 (en) | 1994-11-02 |
Family
ID=6443923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92250020A Expired - Lifetime EP0542382B1 (en) | 1991-10-30 | 1992-01-27 | Method for producing rolled stock from oxygen-free copper |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5366001A (en) |
| EP (1) | EP0542382B1 (en) |
| JP (1) | JP3244546B2 (en) |
| AU (1) | AU663528B2 (en) |
| DE (2) | DE4136085C2 (en) |
| ES (1) | ES2063564T3 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5240494A (en) * | 1991-04-25 | 1993-08-31 | Asarco Incorporated | Method for melting copper |
| US6531039B2 (en) | 2001-02-21 | 2003-03-11 | Nikko Materials Usa, Inc. | Anode for plating a semiconductor wafer |
| DE10112621A1 (en) * | 2001-03-14 | 2002-09-19 | Km Europa Metal Ag | Arrangement for pouring a casting melt consisting of a copper alloy |
| US20070227688A1 (en) * | 2004-06-15 | 2007-10-04 | Tosoh Smd, Inc. | Continuous Casting of Copper to Form Sputter Targets |
| US7891407B2 (en) * | 2004-12-13 | 2011-02-22 | Nucor Corporation | Method and apparatus for localized control of heat flux in thin cast strip |
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| CN103921071B (en) * | 2014-04-16 | 2016-04-20 | 黄学志 | Anaerobic copper bar production technology |
| CN114570900B (en) * | 2022-03-03 | 2024-02-02 | 大连交通大学 | Device and method for continuous casting and extrusion molding of copper and copper alloy |
| KR102589057B1 (en) * | 2022-05-10 | 2023-10-12 | 엘에스전선 주식회사 | Method and apparatus for preparing oxygen free copper or oxygen free copper alloy |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2264289A (en) * | 1939-08-22 | 1941-12-02 | American Smelting Refining | Process and apparatus for casting metal |
| US3089209A (en) * | 1960-01-06 | 1963-05-14 | American Smelting Refining | Method for continuous casting of metal |
| US3257835A (en) * | 1964-11-12 | 1966-06-28 | Southwire Co | Method of hot forming metal |
| LU56492A1 (en) * | 1968-07-15 | 1970-01-15 | ||
| BE806327A (en) * | 1973-10-22 | 1974-04-22 | Metallurgie Hoboken | COPPER MACHINE WIRE MANUFACTURING PROCESS |
| CA1106633A (en) * | 1977-10-05 | 1981-08-11 | Clovis Labrecque | Hub cap lock device |
| DE3036595A1 (en) * | 1980-09-27 | 1982-05-13 | Willi-Friedrich 3384 Liebenburg Oppermann | Simultaneous continuous casting and rolling of strip and rod - where holding furnace contains two moulds for simultaneous prodn. of strip fed to rolling mill and several rods fed to coilers |
| JPS58360A (en) * | 1981-04-20 | 1983-01-05 | ヘイズレツト・ストリツプ・キヤステイング・コ−ポレ−シヨン | Method and apparatus for preventing oxidation of newly cast copper product after retracted from double belt casting machine for producing anode |
| JPS63171255A (en) * | 1987-01-09 | 1988-07-15 | Sumitomo Metal Ind Ltd | Non-solidified rolling method |
| US4754803A (en) * | 1987-02-02 | 1988-07-05 | Phelps Dodge Industries, Inc. | Manufacturing copper rod by casting, hot rolling and chemically shaving and pickling |
-
1991
- 1991-10-30 DE DE4136085A patent/DE4136085C2/en not_active Expired - Fee Related
-
1992
- 1992-01-27 DE DE59200731T patent/DE59200731D1/en not_active Expired - Fee Related
- 1992-01-27 ES ES92250020T patent/ES2063564T3/en not_active Expired - Lifetime
- 1992-01-27 EP EP92250020A patent/EP0542382B1/en not_active Expired - Lifetime
- 1992-10-27 JP JP31125392A patent/JP3244546B2/en not_active Expired - Fee Related
- 1992-10-28 AU AU27387/92A patent/AU663528B2/en not_active Ceased
- 1992-10-30 US US07/969,884 patent/US5366001A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59200731D1 (en) | 1994-12-08 |
| AU2738792A (en) | 1993-05-06 |
| DE4136085C2 (en) | 1993-11-04 |
| US5366001A (en) | 1994-11-22 |
| AU663528B2 (en) | 1995-10-12 |
| EP0542382A1 (en) | 1993-05-19 |
| ES2063564T3 (en) | 1995-01-01 |
| JPH06106205A (en) | 1994-04-19 |
| DE4136085A1 (en) | 1993-05-06 |
| JP3244546B2 (en) | 2002-01-07 |
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