EP0237747A1 - Continuous casting method for bars or rounds, in particular of steel - Google Patents

Continuous casting method for bars or rounds, in particular of steel Download PDF

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Publication number
EP0237747A1
EP0237747A1 EP87101479A EP87101479A EP0237747A1 EP 0237747 A1 EP0237747 A1 EP 0237747A1 EP 87101479 A EP87101479 A EP 87101479A EP 87101479 A EP87101479 A EP 87101479A EP 0237747 A1 EP0237747 A1 EP 0237747A1
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EP
European Patent Office
Prior art keywords
casting
continuous casting
dimensions
round
produced
Prior art date
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Application number
EP87101479A
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German (de)
French (fr)
Inventor
Lothar Dipl.-Ing. Parschat
Fritz-Peter Dr.-Ing. Pleschiutschnigg
Wilfried Dipl.-Ing- Rensch
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Vodafone GmbH
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Mannesmann AG
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Publication of EP0237747A1 publication Critical patent/EP0237747A1/en
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    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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
    • B22D11/14—Plants for continuous casting
    • 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
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • 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
    • 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
    • B21B1/20—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 non-continuous process,(e.g. skew rolling, i.e. planetary cross rolling)

Definitions

  • the invention relates to a process for the production of rolling stock by continuous casting for long products made of metal, in particular steel, in which a first adjustment of the round casting material to tapping dimensions of a longitudinal rolling mill or to forging dimensions takes place through the casting process.
  • pre-rolled material has been produced from ingots produced in the cast iron in a square or rectangular cross-section.
  • materials produced in the stationary casting are rolled into primary materials in the block rolling mill.
  • Continuously cast billets with an edge length of approx. 130 mm are cast in a soothing silicon-manganese manner with an open pouring jet and used as pre-rolled materials.
  • An example of the use of continuously cast billets is the rolling stock of a wire mill.
  • continuously cast billets are homogenized in the heating furnace and processed into wire in a wire mill (consisting of a multi-stand reducing roll mill).
  • values set the maximum rolling speed in the final stand and the minimum rolling speed in the tapping stand. If the tapping speed is too low of approx. 0.08 m / sec, the rolls will burn.
  • a tap size of 130 ⁇ 130 mm would also be one Stick length of 35 m required, but this is difficult to handle.
  • the invention is therefore based on the object of demonstrating a process for producing rolled starting material by continuous casting for long products made of metal, which is based on higher material qualities (with regard to analysis and quality) and improved surface with high economy.
  • final or finished product dimensions can be produced from continuous casting, which previously required block casting with the same quality. It can also be used directly, which means that less energy is required than previously. Direct use is only possible because the quality of the large casting dimensions means that there is no need for inspection.
  • the cost advantages are less storage of spare parts and exchange parts, increased operating times (reduction of set-up times).
  • the invention therefore leads to a standard system of greater economy.
  • the advantages mentioned above affect the continuous caster itself. However, there are still advantages in the "forward" direction, since smaller finished products (cross-sections) can be produced from large input cross-sections with fewer rolling passes (roughing stands). Such pre-rolled material for long products can be produced particularly advantageously in large capacity blow molding plants.
  • An improvement of the invention is that the casting material sections are subsequently deformed to the required tapping dimensions of subsequent longitudinal rolling mills in a high-reducing, cross-rolling mill after the continuous casting.
  • the standard cross-section is chosen to be round between a diameter of 175 mm and 600 mm. This measure leads to a high level of casting reliability, to simple regulation and thus to fewer disruptions to the casting operation.
  • the casting material is produced in a horizontal position.
  • the use of horizontally produced casting material is made possible by the compensation of the core porosities that occur in the case of horizontal continuous casting, which are completely eliminated in the highly reducing, cross-working rolling mill.
  • the heat compensation takes place in a passage space which inhibits and / or compensates for the radiation losses.
  • the heat losses are in fact small due to the proposed volume / surface ratio.
  • the method according to the invention is shown schematically in comparison with the prior art in the accompanying drawing.
  • the only figure in the drawing shows the material flow in a process chain for the known and the new process for producing rolled starting material.
  • (1) designates the production of the liquid metal in a blow steel mill and (2) in an electric arc furnace.
  • the liquid metal is further treated in a secondary metallurgical treatment stage (3).
  • the liquid metal produced in this way is now supplied to the rolling mills (6) for long products in the highest qualities and grades via ingot casting (4) and several ingot rolling stages (5).
  • Such long products consist of profile bars, profile beams, wire and rails. So far, the latter have only been rolled from square stock.
  • the method according to the invention for producing high-quality and high-quality rolled starting material with cost savings compared to the line (4, 5) and (6) is carried out either in the horizontal continuous casting installation (8) or in the curved continuous casting apparatus (9) by casting round cross sections made from aluminum-calmed qualities.
  • the round cross sections produced in this way with a volume / surface ratio of at least 40: 1 to 150: 1 and a uniform cross section between a diameter of 175 mm to 600 mm round are then passed through the passage space (10) which inhibits and / or compensates for radiation losses and in Highly reducing, cross-working rolling mill (11) reduced to the desired tapping cross section or introduced directly into the rolling mill (6).

Abstract

In a continuous casting method to produce rolling material for elongate products made of metal, in particular of steel, such as profile bars, profile supports, wire and rails, after the casting process, forming of the round casting material takes place to initial pass dimensions of a longitudinal rolling mill or to forging dimensions. Since prematerial for rolling of high quality can only be produced in vertical casting without saving costs, it is proposed in order to achieve high material quality and analysis, to cast the melt between the upstream vessel and the continuous casting mould with exclusion of air, to produce the cast material in a standard continuous casting mould with an approximately circular standard cross section, and to make the ratio of volume to surface of the cast material portion at least 40:1 mm<3>/mm<2>, at most 150:1 mm<3>/mm<2>. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Erzeugen von Walzvormaterial durch Stranggießen für Langprodukte aus Metall, insbesondere aus Stahl, bei dem durch den Gießprozeß eine erste Abstimmung des runden Gußmaterials auf Anstichabmessungen eines Längswalzwerkes bzw. auf Schmiedeabmessungen erfolgt.The invention relates to a process for the production of rolling stock by continuous casting for long products made of metal, in particular steel, in which a first adjustment of the round casting material to tapping dimensions of a longitudinal rolling mill or to forging dimensions takes place through the casting process.

Walzvormaterial wird seit vielen Jahren aus im Standguß erzeugten Ingots in quadratischem oder rechteckigem Querschnitt hergestellt. Insbesondere für hohe Materialqualität und Materialanalyse werden im Standguß erzeugte Werkstoffe im Blockwalzwerk zu Walzvormaterialien gewalzt.For many years, pre-rolled material has been produced from ingots produced in the cast iron in a square or rectangular cross-section. In particular for high material quality and material analysis, materials produced in the stationary casting are rolled into primary materials in the block rolling mill.

Stranggegossene Knüppel unter ca. 130 mm Kantenlänge werden sili­zium-mangan-beruhigt bei offenem Gießstrahl abgegossen und als Walz­vormaterialien verwendet. In einer solchen Verfahrenslinie bestehen Restriktionen hinsichtlich Qualität und Analyse. Ein Beispiel für die Verwendung stranggegossener Knüppel bildet das Walzvormaterial einer Drahtstraße. Hier werden stranggegossene Knüppel im Aufwärmofen ver­gleichmäßigt und in einer Drahtstraße (bestehend aus einem vielgerü­stigen Reduzierwalzwerk) zu Draht verarbeitet. Hier setzen Werte der maximalen Walzgeschwindigkeit im Endgerüst und der minimalen Walzgeschwindigkeit im Anstichgerüst Grenzen. Bei zu geringer Anstichgeschwindigkeit von ca. 0,08 m/sec entsteht Brandrissigkeit der Walzen. Um möglichst hohe Bundgewichte (von etwa 2.200 kg) zu erreichen, wäre außerdem bei einem Anstichformat 130 × 130 mm eine Knüppellänge von 35 m erforderlich, die jedoch schwierig zu handhaben ist.Continuously cast billets with an edge length of approx. 130 mm are cast in a soothing silicon-manganese manner with an open pouring jet and used as pre-rolled materials. In such a process line there are restrictions regarding quality and analysis. An example of the use of continuously cast billets is the rolling stock of a wire mill. Here, continuously cast billets are homogenized in the heating furnace and processed into wire in a wire mill (consisting of a multi-stand reducing roll mill). Here, values set the maximum rolling speed in the final stand and the minimum rolling speed in the tapping stand. If the tapping speed is too low of approx. 0.08 m / sec, the rolls will burn. In order to achieve the highest possible coil weights (of around 2,200 kg), a tap size of 130 × 130 mm would also be one Stick length of 35 m required, but this is difficult to handle.

Das heute noch übliche Anstichformat von 120 bis 130 mm Quadrat für Stranggußknüppel muß beim Stranggießen zwischen Verteiler und Kokille ohne Tauchrohr und Gießpulver gegossen werden. Der Stranggußknüppel hat demzufolge eine schlechte Oberflächenqualität, eine ausgeprägte Mittenseigerung und Kernporosität.The tapping format of 120 to 130 mm square for continuous billets, which is still common today, must be poured between the distributor and the mold without a dip tube and casting powder. As a result, the continuous casting billet has a poor surface quality, a pronounced central increase and core porosity.

Den Schwierigkeiten beim Knüppelguß (geringere Qualitäten, mindere Erstarrungsstrukturen und schlechtere Oberfläche) stehen beim Standguß die höheren Kosten gegenüber.The difficulties with billet casting (lower qualities, less solidification structures and poorer surface) are offset by the higher costs for stand casting.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zum Erzeugen von Walzvormaterial durch Stranggießen für Langprodukte aus Metall aufzuzeigen, das auf höheren Werkstoffqualitäten (hinsichtlich Analyse und Güte) sowie verbesserter Oberfläche bei hoher Wirtschaft­lichkeit beruht.The invention is therefore based on the object of demonstrating a process for producing rolled starting material by continuous casting for long products made of metal, which is based on higher material qualities (with regard to analysis and quality) and improved surface with high economy.

Die gestellte Aufgabe wird erfindungsgemäß durch die Kombination folgender Merkmale gelöst:

  • a) die Metallschmelze wird zwischen Vorschaltgefäß und Stranggieß­kokille unter Luftabschluß vergossen,
  • b) das Gußmaterial wird in einer Einheits-Stranggießkokille mit einem rundähnlichen Einheits-Querschnitt hergestellt,
  • c) wobei das Verhältnis Volumen/Oberfläche des Gußmaterialabschnitts mindestens 40 : 1 mm3/mm2, maximal 150 : 1 mm3/mm2, beträgt.
The object is achieved according to the invention by combining the following features:
  • a) the molten metal is cast between the upstream vessel and the continuous casting mold with the exclusion of air,
  • b) the casting material is produced in a unitary continuous casting mold with a round-like unit cross section,
  • c) wherein the ratio of volume / surface area of the casting material section is at least 40: 1 mm3 / mm2, maximum 150: 1 mm3 / mm2.

Demgemäß können End- oder Fertigproduktabmessungen aus Strangguß hergestellt werden, die bisher bei gleicher Qualität unbedingt Block­guß erforderten. Weiterhin kann ein Direkteinsatz erfolgen, wodurch geringerer Energieaufwand als bisher erforderlich wird. Der Direkt­einsatz ist nämlich nur deshalb möglich, weil die Qualität der großen Gießabmessungen es erlaubt, auf Inspektion vollständig zu verzichten. Von besonderem Vorteil ist jedoch auch, daß auf einer Rundstranggieß­anlage nur ein Format notwendig wird und damit die Produktivität der Stranggießanlage erhöht wird. Die Kostenvorteile liegen in geringerer Lagerhaltung von Ersatzteilen und Austauschteilen, Erhöhung der Be­triebszeiten (Verringerung der Rüstzeiten). Die Erfindung führt daher zu einer Standardanlage größerer Wirtschaftlichkeit. Die vorstehend genannten Vorteile wirken sich auf die Stranggießanlage selbst aus. Weiterhin sind jedoch Vorteile gegeben in Richtung "nach vorne", da kleinere Fertigprodukte (Querschnitte) aus großen Eingangsquer­schnitten mit weniger Walzstichen (Vorgerüsten) hergestellt werden können. Derartiges Walzvormaterial für Langprodukte kann besonders vorteilhaft in Blasstahlwerken mit großer Kapazität erzeugt werden.Accordingly, final or finished product dimensions can be produced from continuous casting, which previously required block casting with the same quality. It can also be used directly, which means that less energy is required than previously. Direct use is only possible because the quality of the large casting dimensions means that there is no need for inspection. However, it is also of particular advantage that only one format is required on a continuous caster, thus increasing the productivity of the caster. The cost advantages are less storage of spare parts and exchange parts, increased operating times (reduction of set-up times). The invention therefore leads to a standard system of greater economy. The advantages mentioned above affect the continuous caster itself. However, there are still advantages in the "forward" direction, since smaller finished products (cross-sections) can be produced from large input cross-sections with fewer rolling passes (roughing stands). Such pre-rolled material for long products can be produced particularly advantageously in large capacity blow molding plants.

Eine Verbesserung der Erfindung besteht darin, daß die Gußmaterial­abschnitte anschließend an das Stranggießen in einem hochreduzieren­den, querarbeitenden Walzwerk auf die erforderlichen Anstichabmes­sungen nachfolgender Längswalzwerke rundverformt werden.An improvement of the invention is that the casting material sections are subsequently deformed to the required tapping dimensions of subsequent longitudinal rolling mills in a high-reducing, cross-rolling mill after the continuous casting.

In Weiterbildung der Erfindung ist vorgesehen, daß der Einheits­querschnitt zwischen einem Durchmesser von 175 mm bis 600 mm rund gewählt wird. Diese Maßnahme führt zu einer hohen Gießsicherheit, zu einer einfachen Regelung und damit zu weniger Störungen des Gießbe­triebs.In a further development of the invention it is provided that the standard cross-section is chosen to be round between a diameter of 175 mm and 600 mm. This measure leads to a high level of casting reliability, to simple regulation and thus to fewer disruptions to the casting operation.

In Weiterbildung der Erfindung ist vorgesehen, daß das Gußmaterial in horizontaler Lage erzeugt wird. Der Einsatz von horizontal erzeugtem Gußmaterial wird möglich durch die Kompensation der bei Horizontal­strangguß stark auftretenden Kernporositäten, die im hochreduzieren­den, querarbeitenden Walzwerk vollständig beseitigt werden.In a development of the invention it is provided that the casting material is produced in a horizontal position. The use of horizontally produced casting material is made possible by the compensation of the core porosities that occur in the case of horizontal continuous casting, which are completely eliminated in the highly reducing, cross-working rolling mill.

Weiterhin ist vorteilhaft, daß der Wärmeausgleich in einem die Strahlungsverluste hemmenden und/oder ausgleichenden Durchgangsraum erfolgt. Die Wärmeverluste sind nämlich aufgrund des vorgeschlagenen Volumen/Oberflächen-Verhältnisses gering.It is also advantageous that the heat compensation takes place in a passage space which inhibits and / or compensates for the radiation losses. The heat losses are in fact small due to the proposed volume / surface ratio.

Das erfindungsgemäße Verfahren ist im Vergleich zum Stand der Technik in der beigefügten Zeichnung schematisch dargestellt. Die einzige Figur der Zeichnung zeigt den Stofffluß in einer Verfahrenskette für die bekannten und das neue Verfahren zum Erzeugen von Walzvormate­rial. Mit (1) ist die Erzeugung des flüssigen Metalls in einem Blas­stahlwerk bezeichnet und mit (2) in einem Elektrolichtbogenofen. Das Flüssigmetall wird in einer sekundärmetallurgischen Behandlungsstufe (3) weiterbehandelt. Das auf diese Arten erzeugte Flüssigmetall wird nunmehr bei höchsten Qualitäten und Güten über Blockguß (4) und mehreren Blockwalzstufen (5) den Walzwerken (6) für Langprodukte zugeführt. Solche Langprodukte bestehen aus Profilstäben, Profilträgern, Draht und Schienen. Letztere wurden bisher nur aus Vierkant-Vormaterial gewalzt. Diesem wirtschaftlich nachteiligen Verfahren steht das wirtschaftlich güstigere Verfahren durch Stranggießen gegenüber, bei dem in bekannter Weise Knüppelquerschnitte kleiner 130 mm aus silizium-mangan-beruhigten Qualitäten in einer Knüppelstranggießanlage (7) bei offenem Gießstrahl (ohne Tauchrohr und Gießpulver) erzeugt werden.The method according to the invention is shown schematically in comparison with the prior art in the accompanying drawing. The only figure in the drawing shows the material flow in a process chain for the known and the new process for producing rolled starting material. (1) designates the production of the liquid metal in a blow steel mill and (2) in an electric arc furnace. The liquid metal is further treated in a secondary metallurgical treatment stage (3). The liquid metal produced in this way is now supplied to the rolling mills (6) for long products in the highest qualities and grades via ingot casting (4) and several ingot rolling stages (5). Such long products consist of profile bars, profile beams, wire and rails. So far, the latter have only been rolled from square stock. This economically disadvantageous process is opposed by the economically more economical process by continuous casting, in which billet cross-sections smaller than 130 mm are produced in a known manner from silicon-manganese-calmed qualities in a billet continuous casting plant (7) with an open pouring jet (without dip tube and casting powder).

Das erfindugsgemäße Verfahren zum Erzeugen von Walzvormaterial hoher Qualität und Güte unter Kosteneinsparung gegenüber der Linie (4, 5) und (6) wird entweder in der Horizontalstranggießanlage (8) oder in der Bogenstranggießvorrichtung (9) durch Gießen von Rundquerschnitten aus aluminiumberuhigten Qualitäten durchgeführt. Die derartig erzeugten Rundquerschnitte mit einem Verhältnis Volumen/Oberfläche von mindestens 40 : 1 bis 150 : 1 und einem Einheitsquerschnitt zwischen einem Durchmesser von 175 mm bis 600 mm rund werden sodann durch den die Strahlungsverluste hemmenden und/oder ausgleichenden Durchgangsraum (10) geführt und im hochreduzierenden, querarbeitenden Walzwerk (11) auf den gewünschten Anstichquerschnitt reduziert oder unmittelbar in das Walzwerk (6) eingebracht.The method according to the invention for producing high-quality and high-quality rolled starting material with cost savings compared to the line (4, 5) and (6) is carried out either in the horizontal continuous casting installation (8) or in the curved continuous casting apparatus (9) by casting round cross sections made from aluminum-calmed qualities. The round cross sections produced in this way with a volume / surface ratio of at least 40: 1 to 150: 1 and a uniform cross section between a diameter of 175 mm to 600 mm round are then passed through the passage space (10) which inhibits and / or compensates for radiation losses and in Highly reducing, cross-working rolling mill (11) reduced to the desired tapping cross section or introduced directly into the rolling mill (6).

Claims (5)

1. Verfahren zum Erzeugen von Walzvormaterial durch Stranggießen für Langprodukte aus Metall, insbesondere aus Stahl, bei dem durch den Gießprozeß eine erste Abstimmung des runden Gußmaterials auf Anstichabmessungen eines Längswalzwerkes bzw. auf Schmiedeabmessungen erfolgt,
gekennzeichnet durch die Kombination folgender Merkmale: a) die Metallschmelze zwischen Vorschaltgefäß und Stranggieß­kokille wird unter Luftabschluß vergossen, b) das Gußmaterial wird in einer Einheits-Stranggießkokille mit einem rundähnlichen Einheits-Querschnitt hergestellt, c) wobei das Verhältnis Volumen/Oberfläche des Gußmaterial­abschnitts mindestens 40 : 1 mm3/mm2, maximal 150 : 1 mm3/mm2, beträgt. 1. A process for the production of primary rolling stock by continuous casting for long products made of metal, in particular steel, in which the casting process first adjusts the round casting material to the piercing dimensions of a longitudinal rolling mill or to the forging dimensions,
characterized by the combination of the following features: a) the molten metal between the upstream vessel and the continuous casting mold is cast with the exclusion of air, b) the casting material is produced in a unitary continuous casting mold with a round-like unit cross section, c) wherein the ratio of volume / surface area of the casting material section is at least 40: 1 mm3 / mm2, maximum 150: 1 mm3 / mm2. 2. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die Gußmaterialabschnitte anschließend an das Stranggießen in einem hochreduzierenden, querarbeitenden Walzwerk (11) auf die erforderlichen Anstichabmessungen nachfolgender Längswalzwerke (6) rundverformt werden.2. The method according to claim 1,
characterized,
that the casting material sections are subsequently deformed to the required tapping dimensions of subsequent longitudinal rolling mills (6) in a high-reducing, cross-working rolling mill (11). 3. Verfahren nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet,
daß der Einheits-Querschnitt zwischen einem Durchmesser von 175 mm bis 600 mm rund gewählt wird.3. The method according to claims 1 and 2,
characterized,
that the unit cross-section is chosen between a diameter of 175 mm to 600 mm round. 4. Verfahren nach den Ansprüchen 1 bis 3,
dadurch gekennzeichnet,
daß das Gußmaterial in horizontaler Lage erzeugt wird.4. The method according to claims 1 to 3,
characterized,
that the casting material is produced in a horizontal position. 5. Verfahren nach den Ansprüchen 1 bis 4,
dadurch gekennzeichnet,
daß der Wärmeausgleich in einem die Strahlungsverluste hemmenden und/oder ausgleichenden Durchgangsraum erfolgt.5. The method according to claims 1 to 4,
characterized,
that the heat compensation takes place in a passage space which inhibits and / or compensates for the radiation losses.
EP87101479A 1986-02-28 1987-02-04 Continuous casting method for bars or rounds, in particular of steel Withdrawn EP0237747A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863606507 DE3606507A1 (en) 1986-02-28 1986-02-28 METHOD FOR PRODUCING ROLLING PRE-MATERIAL BY CONTINUOUSLY FOR LONG PRODUCTS MADE OF METAL, ESPECIALLY STEEL
DE3606507 1986-02-28

Publications (1)

Publication Number Publication Date
EP0237747A1 true EP0237747A1 (en) 1987-09-23

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EP87101479A Withdrawn EP0237747A1 (en) 1986-02-28 1987-02-04 Continuous casting method for bars or rounds, in particular of steel

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EP (1) EP0237747A1 (en)
JP (1) JPS62207544A (en)
KR (1) KR870007741A (en)
CN (1) CN87101636A (en)
BR (1) BR8700959A (en)
DE (1) DE3606507A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0746433A1 (en) * 1993-06-18 1996-12-11 CF&amp;I Steel, L.P. Railroad rail and method and system of rolling the same by conventional or continuous rolling process
CN103769418A (en) * 2012-10-26 2014-05-07 襄阳博亚精工装备股份有限公司 Continuous casting and rolling system for lead belt production

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DE4139242C3 (en) * 1991-11-26 1999-08-19 Mannesmann Ag Process for the production of long steel products
WO2013086881A1 (en) * 2011-12-12 2013-06-20 Xie Zhaozong Machining equipment and method for continuous metal casting

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Publication number Priority date Publication date Assignee Title
EP0746433A1 (en) * 1993-06-18 1996-12-11 CF&amp;I Steel, L.P. Railroad rail and method and system of rolling the same by conventional or continuous rolling process
EP0746433A4 (en) * 1993-06-18 1998-02-04 Cf & I Steel Lp Railroad rail and method and system of rolling the same by conventional or continuous rolling process
CN103769418A (en) * 2012-10-26 2014-05-07 襄阳博亚精工装备股份有限公司 Continuous casting and rolling system for lead belt production

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DE3606507A1 (en) 1987-09-10
CN87101636A (en) 1987-09-09

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