EP0314667A1 - Procédé et dispositif pour la fabrication de fils, de barres, de tuyaux et de profilés minces en aciers ou alliages difficilement déformables, notamment en aciers durcissables - Google Patents

Procédé et dispositif pour la fabrication de fils, de barres, de tuyaux et de profilés minces en aciers ou alliages difficilement déformables, notamment en aciers durcissables Download PDF

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Publication number
EP0314667A1
EP0314667A1 EP88890265A EP88890265A EP0314667A1 EP 0314667 A1 EP0314667 A1 EP 0314667A1 EP 88890265 A EP88890265 A EP 88890265A EP 88890265 A EP88890265 A EP 88890265A EP 0314667 A1 EP0314667 A1 EP 0314667A1
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EP
European Patent Office
Prior art keywords
deformation
temperature
heating
rolling
roll
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.)
Granted
Application number
EP88890265A
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German (de)
English (en)
Other versions
EP0314667B2 (fr
EP0314667B1 (fr
Inventor
Hans Dipl.-Ing. Lösch
Johann Eilmer
Franz Rischka
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.)
Boehler Edelstahl alpha Edelstahl Gmbh boehle GmbH
Boehler GmbH Germany
Original Assignee
Boehler GmbH
Boehler GmbH Germany
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Publication date
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Application filed by Boehler GmbH, Boehler GmbH Germany filed Critical Boehler GmbH
Publication of EP0314667A1 publication Critical patent/EP0314667A1/fr
Application granted granted Critical
Publication of EP0314667B1 publication Critical patent/EP0314667B1/fr
Publication of EP0314667B2 publication Critical patent/EP0314667B2/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating
    • 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
    • B21B1/166—Rolling wire into sections or flat ribbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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

Definitions

  • the invention relates to a method for deforming steels, metals and alloys with low deformability and / or high deformation resistance at room temperature, in particular hardenable steels, for example high-speed steels, with small primary material thicknesses, preferably less than 10 mm and with a large overall reduction in cross section, and a device for carrying them out of the method with a heating device, optionally a temperature compensation and guide device and a deformation device.
  • a heating device optionally a temperature compensation and guide device and a deformation device.
  • Wires, rods, tubes and profiles with a small diameter or wall thickness are produced by cold rolling or cold drawing after the hot forming of the primary material and, if necessary, after soft annealing.
  • the primary material usually has a thickness of less than 10 mm.
  • the material solidifies, whereby with decreasing ductility or increasing resistance to deformation, higher degrees of hardening are given and the deformability of the material is exhausted at low degrees of deformation.
  • Materials with high ductility at room temperature and thus high cold-forming properties can be highly deformed by cold rolling and cold drawing, and cross-sectional reductions of, for example, 10: 1 or 90% and higher are possible.
  • the material solidifies in the course of the change in shape due to the low cold forming capacity so strongly that the Further processing to the desired final dimensions is not possible and cracks and breaks occur due to exhausted deformability, so softening by heating to higher temperatures or intermediate annealing must be activated. With this intermediate heat treatment, the solidifications in the material are broken down.
  • this intermediate heat treatment can be a soft annealing treatment.
  • long-term annealing is usually carried out for softening, possibly below the austenitizing temperature or below the AC 1 point of the alloy.
  • Pre-material with low cold forming ability and with a small thickness can usually not be deformed to the final dimension in the hot, ductile state because the energy loss due to radiation from the surface, which increases with the 4th power of the temperature, leads to low temperatures in the zone near the surface and In the case of hardenable steels and alloys, structural changes or hardening of the material also take place. The rapid cooling occurs because the heat content of the material is low due to the small cross section. Furthermore, after a deformation of, for example, hardenable alloys in the forging-hot state, a low-temperature treatment must be carried out.
  • Drawing has proven to be advantageous for the deformation process at elevated temperature, because the energy input is caused by the friction in the drawing cavity and by the main deformation in the zone near the surface and the radiation losses are thereby largely compensated for.
  • the improved temperature distribution across the cross-section enables larger cross-sectional reductions to be used per deformation step and, with an overall high decrease in the initial cross-section, a reduction in the number of pulls and the intermediate softening treatments to be achieved by repeated pulling.
  • the drawing speed at an elevated temperature of the material must be kept low, for example at 0.2 to 2 m / sec, because at higher values the drawing die wear becomes too great due to the tearing off of the lubricating film and the time for the preheating and softening of the material is long and therefore requires uneconomical warm-up sections.
  • a soft annealed high-speed steel wire (material DIN No. 1.3343) with a diameter of 5.5 mm can be continuously drawn off a reel in a lead bath with a length of 10 m and a lead bath temperature of 700 ° C for a throughput time of 20 seconds be, whereupon a deformation in the die to a diameter of 4.7 mm at a speed of 0.5 m / sec, after which the wire is rewound.
  • the deformation in this case is approx. 27%.
  • seven further steps carried out in the same way possibly with four intermediate softening anneals with oxidation protection at a temperature of approx. 800 ° C and a glow duration of approx.
  • the object of the invention was to avoid the above disadvantages and to create a method and a device with which overall large cross-sectional reductions can be carried out in one work step and the desired final cross-section can be achieved with largely any dimensions.
  • This object is achieved according to the invention in a process of the type mentioned at the outset in that the starting material is heated to a temperature of at least 400 ° C. and at most 1100 ° C., preferably at most 950 ° C., if necessary at most up to the AC 1 temperature or transition temperature into the Gamma structure of the alloy is heated and that a two- or multi-stage deformation is carried out with an overall large reduction in cross section becomes.
  • the heating of the primary material is carried out by means of continuous rapid heating, the heating with direct current passage with a variable heating distance bringing additional process advantages if the electrical power, which is influenced by the cross-sectional area of the mean specific heat and the density of the material, is proportional to that Quotients, formed from the speed of the material to be heated and the heating section, is regulated. It is particularly advantageous and of economic importance if the primary material is deformed by rolling and a total cross-sectional decrease of at least 40%, preferably at least 60%, is carried out.
  • the rolling deformation in the individual passes should be carried out in such a way that a reduction in cross-section of at least 10%, preferably at least 15%, or a decrease in height of at least 20%, preferably at least 30%, is carried out on the rolling stock.
  • the cooling of the rolling stock which is possibly to be used advantageously is to be regulated in the order of magnitude in accordance with the deformation performance of the preceding pass or passages converted into heat.
  • the method can be used particularly well and economically if the feed speed of the primary material into the first roller caliber is at least 0.2 m / sec, preferably at least 0.5 m / sec. If necessary, the deformation of the primary material can advantageously also take place in a multi-roller mill.
  • the invention consists in a device for carrying out the method, whereby after a preferably electrical heating device by induction or with direct current passage through the heating material with a variable heating distance and optionally a temperature compensation device with protection gas atmosphere to prevent oxidation, a deformation unit, in particular a two-stand or multi-stand continuous rolling mill, preferably designed as a cassette rolling mill, and optionally adjustable cooling devices are arranged between the rolling stands.
  • a deformation unit in particular a two-stand or multi-stand continuous rolling mill, preferably designed as a cassette rolling mill, and optionally adjustable cooling devices are arranged between the rolling stands.
  • the device has proven to be advantageous if the device for temperature compensation and for guiding raw materials can be heated and in which a protective gas atmosphere can be set.
  • a closed caliber shape is advantageously used in all rolling stands. Particularly good results combined with high cost-effectiveness can be achieved if cooling devices are arranged between the roll stands, by means of which cooling medium can be regulated in a controllable manner on the roll surfaces and / or the rolling stock. A particularly high level of economy is also provided if the rolls are made of hard metal or tempered high-speed steel and optionally have a hard material layer which is formed from oxide and / or nitride and / or carbide and / or their compound, for example oxycarbonitride.
  • the device advantageously has a multi-roller mill as a deformation unit.
  • a rolling mill mounted on a foundation A for producing a wide flat profile with the dimensions of 8 mm x 1 mm from round wire primary material with a diameter of 3.8 mm is shown schematically.
  • a supply reel 2 from a drum 21, which is rotatably fastened in a support device 22 by means of bolts 23 primary material 1 is drawn off, heated in a rapid heating device 3, fed by a temperature compensation and guide device 4 to a two-stand deformation device 5 and thus rolled, whereupon in a final reel 7, the dimensionally accurate flat profile tape is wound on a drum 71, which is driven by a shaft 73 and is rotatably mounted in a support 72.
  • the contact roller stand 31 which is slidably connected to a support 33, is in a position 31 'and near a contact roller stand 32 brought, which shortens the heating distance.
  • the wire-shaped primary material 1 with a diameter of 3.8 mm is, for example, a high-speed steel, material no. 1.3343, in a soft-annealed condition and is carried out through the gap of contact rollers 311 and 311 'in position 31' until it has an electrically conductive connection a pair of contact rollers 322 or 322 'produces, whereupon the power supply of terminals 34 takes place.
  • the passage of current through the primary material heats it up and, when a temperature of 800 ° C.
  • the wire is moved into a guide and temperature compensation tunnel 41, which is preheated via a connecting pipe 42 and supplied with inert gas can, inserted.
  • the wire feed can be carried out by a separate pair of rollers, not shown, or by the contact rollers of the contact roller frame (s).
  • the primary material which has a temperature of 500 ° C. and a diameter of 3.8 mm, is deformed in a first roll stand 51 to a thickness of 2 mm and an average width of 5.3 mm .
  • the deformation takes place, as shown in FIG. 2, with free spreading between rollers 511 and 512, a decrease in height of approx. 47%, a spreading of approx.
  • the number 1 represents the initial cross section of the primary material and 1 'the rolled cross section.
  • the material deformed in the caliber of the first stand 51 is in a second closed caliber of a rolling stand 52, which in FIG is shown on the desired cross cutting dimension of 1 x 8 mm deformed.
  • An upper roller 521 and a lower roller 522 leave the roll gap of 1 mm free, side rollers 523 and 524 being placed on the sides of the upper and lower rollers and thereby preventing the rolling stock from spreading beyond the desired dimension of 8 mm.
  • the height decrease is approx. 50%, the width approx.
  • the inlet speed of the primary material which has a temperature of 800 ° C, is 0.8 m / sec
  • the outlet speed from the roll stand 52, with which the high-speed steel strip is subsequently wound up is approximately 1.13 m / sec, whereby a rolling stock temperature of 810 ° C is present immediately after the last rolls.
  • the degree of deformation achieved in one operation with two-stage rolling is approximately 30% in total.
  • Fig. 4 shows schematically a device mounted on a foundation A for producing a round wire with a diameter of 1.8 mm from a round, with a diameter of 5.5 mm, raw material, wherein a twelve-stand mill or a cassette mill is used.
  • the primary material 1 is drawn off, brought to a temperature of 780 ° C. in a rapid heating system 3, conveyed through the temperature compensation and control device 4 and in a cassette rolling mill 5 deformed, whereupon in the end reel 7 the winding of the wire deformed to the final dimension on the drum 71, which rests on the support 72 and is driven by the shaft 73, takes place.
  • the roll stand 51 of the shaping device 5 can, for example, have a three-roll triangular caliber, as is shown schematically in FIG. 5.
  • the working surfaces of the rollers 511, 512, 513 result in a roller cross section 11 which has a convexly convex triangular shape.
  • an associated follower mill stand 51 'three rolls can also be used, as shown in Fig. 6, the shape of the working surfaces of the rolls 511', 512 ', 513' provides a circular rolling cross section 12.
  • the roll stands 52 and 52 ', 53 and 53', 54 and 54 ', 55 and 55', 56 and 56 ' can have rolls with the same caliber sequences and decreasing caliber cross section.
  • the triangular caliber does not have to be rolled be completely filled, however, with the round caliber due to the required product dimensions or Dimensional tolerances require complete caliber filling.
  • Pre-material for example made of material no. 1.3247, in the soft-annealed condition with a diameter of 5.5 mm, is rolled to a diameter of 1.8 mm in a device described in principle above.
  • a speed of 0.5 m / min in the rapid heating device 3 with direct current passage heating to a temperature of 780 ° C. takes place, a power of approximately 45 kW being taken from the power supply 34 for this purpose.
  • the electrical power required to achieve different primary material temperatures is proportional to the quotient, formed from the speed of the material to be heated and the heating section, so that readjustment can easily be carried out when parameters change.
  • the round wire emerges from the last caliber at a speed of approx. 4.7 m / sec, the total cross-sectional deformation being approx. 89%.
  • the respective cross-sections which are available due to the calibration after the individual passes, can be seen by means of cross-sections of the rolling stock from FIG. 7, with the initial cross-section of 5.5 mm in diameter at the top right and the final cross-section of 1.8 mm in diameter at the bottom left are shown.
  • Cooling devices 5 can be arranged between the roll stands. Such cooling devices are shown in principle in FIG. 8, a cooling element 61 being positioned between the rollers 511 or 512 and 521.
  • the cooling elements, as shown on the upper cooling element consist, for example, of a connection 611, a cooling medium supply line 612 and a nozzle head 613.
  • the rollers 511 and 512 can be exposed to cooling medium, the rays of the nozzle 614 being directed onto the Rolled material are directed.
  • the individual flows of the cooling media can be designed to be separately controllable, the regulations not being shown in the sketch.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Metal Rolling (AREA)
  • Metal Extraction Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Wire Processing (AREA)
  • Heat Treatment Of Steel (AREA)
EP88890265A 1987-10-29 1988-10-24 Procédé et dispositif pour la fabrication de fils, de barres, de tuyaux et de profilés minces en aciers ou alliages difficilement déformables, notamment en aciers durcissables Expired - Lifetime EP0314667B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2846/87A AT393361B (de) 1987-10-29 1987-10-29 Verfahren und Vorrichtung zur Erzeugung dünner Drähte, Stäbe, Rohre und Profile aus Stählen und Legierungen mit geringem Formänderungsverm¦gen, insbes. aus härtbaren Stählen.
AT2846/87 1987-10-29

Publications (3)

Publication Number Publication Date
EP0314667A1 true EP0314667A1 (fr) 1989-05-03
EP0314667B1 EP0314667B1 (fr) 1992-04-08
EP0314667B2 EP0314667B2 (fr) 1995-12-13

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ID=3541221

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EP88890265A Expired - Lifetime EP0314667B2 (fr) 1987-10-29 1988-10-24 Procédé et dispositif pour la fabrication de fils, de barres, de tuyaux et de profilés minces en aciers ou alliages difficilement déformables, notamment en aciers durcissables

Country Status (3)

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EP (1) EP0314667B2 (fr)
AT (2) AT393361B (fr)
DE (1) DE3869902D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442864A1 (fr) * 1990-02-13 1991-08-21 BÖHLER Edelstahl GmbH Méthode et arrangement pour le laminage de barres et fils
WO1996030135A1 (fr) 1995-03-31 1996-10-03 Fintube Limited Partnership Procede de production d'une bande de metal a partir d'une barre laminee a chaud
US5638714A (en) * 1994-04-20 1997-06-17 Fintube Limited Partnership Process for making a strip from a rod
EP1607147A1 (fr) * 2004-06-17 2005-12-21 PLANSEE Aktiengesellschaft Procédé et machine pour la production d'une tôle mince ou d'une feuille de matière métallique par laminage
WO2006050680A1 (fr) * 2004-10-02 2006-05-18 C.D. Wälzholz-Brockhaus GmbH Procede et dispositif de façonnage a proximite de la cale-etalon de produits de depart en forme de fils et de barres et profile plat ainsi obtenu
WO2013028085A1 (fr) * 2011-08-25 2013-02-28 Termetal Piotr Glaner Sp. Kom. (Dawniej Termetal Glaner Sp. J.) Procédé et système de fabrication d'éléments de grille, en particulier de grilles de façade en acier, de grilles de palier intermédiaire en acier, d'escaliers en acier et de paliers d'escalier
CN111957756A (zh) * 2020-07-27 2020-11-20 衡阳市华南电线有限公司 一种铝线加工拉丝机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396073B (de) * 1990-10-25 1993-05-25 Boehler Gmbh Verfahren zum warmwalzen und waermebehandeln von stabfoermigem material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE51188C (de) * C. M. PlELSTICKER in London, E. C. Room 186 Souffolk House, Cannon Street Verfahren und Apparate zum Glühen des auszuwalzenden Metalldrahtes oder Bandeisens mittelst des elektrischen Lichtbogens
DE398402C (de) * 1923-01-06 1924-07-07 Felten & Guilleaume Carlswerk Kaltwalzen von Baendern aus gegluehtem und wieder abgekuehltem Nickeleisendraht
US2400866A (en) * 1941-11-08 1946-05-21 United Drill And Tool Corp Method of drawing metal stock
GB798652A (en) * 1954-12-21 1958-07-23 Bochumer Ver Fuer Gusstahlfabr Process for refining hot-rolled steel by further treatment
DE1104915B (de) * 1960-03-05 1961-04-20 Deutsche Edelstahlwerke Ag Verfahren und Vorrichtung zum Warmziehen haertbarer verguetbarer Staehle
FR2244002A1 (en) * 1973-09-14 1975-04-11 Mannesmann Ag Resistance heating of rolled products, esp. steel tubes - using contact clamps travelling with the continuously moving tube
DE3039101A1 (de) * 1980-10-16 1982-05-13 Schloemann-Siemag AG, 4000 Düsseldorf Anordnung einer kontinuierlich arbeitenden feinstahl-drahtwalzstrasse zum auswalzen von draht oder rundquerschnitten aus edelstaehlen oder hochwertigen legierungen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE51118C (de) * H. F. FÖRSTER in Bürgel Maschine zum Aufpressen von Mustern auf runde oder kegelförmige Hölzer
AT227643B (de) * 1961-09-09 1963-05-27 Boehler & Co Ag Geb Verfahren und Vorrichtung zum Warmziehen härtbarer Stähle
DE1184724B (de) * 1961-09-09 1965-01-07 Boehler & Co Ag Geb Verfahren und Vorrichtung zum Einleiten des Warmziehvorganges bei haertbaren Staehlen
FR2354152A1 (fr) * 1976-06-08 1978-01-06 Michelin & Cie Procede pour fabriquer par laminage un ruban en acier, et ruban resultant de ce procede
CH654496A5 (de) * 1981-11-18 1986-02-28 Bbc Brown Boveri & Cie Verfahren zur kontinuierlichen herstellung eines drahtes von geringem querschnitt und grosser laenge.
FR2579116A1 (fr) * 1985-03-21 1986-09-26 Alsatherm Sarl Procede de fabrication en continu de profiles metalliques
GB2194186B (en) * 1986-08-21 1989-12-13 Ashlon Eng Ltd Method of rolling steel workpieces

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE51188C (de) * C. M. PlELSTICKER in London, E. C. Room 186 Souffolk House, Cannon Street Verfahren und Apparate zum Glühen des auszuwalzenden Metalldrahtes oder Bandeisens mittelst des elektrischen Lichtbogens
DE398402C (de) * 1923-01-06 1924-07-07 Felten & Guilleaume Carlswerk Kaltwalzen von Baendern aus gegluehtem und wieder abgekuehltem Nickeleisendraht
US2400866A (en) * 1941-11-08 1946-05-21 United Drill And Tool Corp Method of drawing metal stock
GB798652A (en) * 1954-12-21 1958-07-23 Bochumer Ver Fuer Gusstahlfabr Process for refining hot-rolled steel by further treatment
DE1104915B (de) * 1960-03-05 1961-04-20 Deutsche Edelstahlwerke Ag Verfahren und Vorrichtung zum Warmziehen haertbarer verguetbarer Staehle
FR2244002A1 (en) * 1973-09-14 1975-04-11 Mannesmann Ag Resistance heating of rolled products, esp. steel tubes - using contact clamps travelling with the continuously moving tube
DE3039101A1 (de) * 1980-10-16 1982-05-13 Schloemann-Siemag AG, 4000 Düsseldorf Anordnung einer kontinuierlich arbeitenden feinstahl-drahtwalzstrasse zum auswalzen von draht oder rundquerschnitten aus edelstaehlen oder hochwertigen legierungen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442864A1 (fr) * 1990-02-13 1991-08-21 BÖHLER Edelstahl GmbH Méthode et arrangement pour le laminage de barres et fils
AT394670B (de) * 1990-02-13 1992-05-25 Boehler Gmbh Verfahren und anordnung zum walzen von drahtund stabmaterial
US5638714A (en) * 1994-04-20 1997-06-17 Fintube Limited Partnership Process for making a strip from a rod
WO1996030135A1 (fr) 1995-03-31 1996-10-03 Fintube Limited Partnership Procede de production d'une bande de metal a partir d'une barre laminee a chaud
EP1607147A1 (fr) * 2004-06-17 2005-12-21 PLANSEE Aktiengesellschaft Procédé et machine pour la production d'une tôle mince ou d'une feuille de matière métallique par laminage
WO2005123288A1 (fr) * 2004-06-17 2005-12-29 Plansee Se Procede et installation pour produire une tole fine ou une feuille en materiau metallique par laminage
WO2006050680A1 (fr) * 2004-10-02 2006-05-18 C.D. Wälzholz-Brockhaus GmbH Procede et dispositif de façonnage a proximite de la cale-etalon de produits de depart en forme de fils et de barres et profile plat ainsi obtenu
WO2013028085A1 (fr) * 2011-08-25 2013-02-28 Termetal Piotr Glaner Sp. Kom. (Dawniej Termetal Glaner Sp. J.) Procédé et système de fabrication d'éléments de grille, en particulier de grilles de façade en acier, de grilles de palier intermédiaire en acier, d'escaliers en acier et de paliers d'escalier
CN111957756A (zh) * 2020-07-27 2020-11-20 衡阳市华南电线有限公司 一种铝线加工拉丝机

Also Published As

Publication number Publication date
EP0314667B2 (fr) 1995-12-13
ATE74624T1 (de) 1992-04-15
AT393361B (de) 1991-10-10
EP0314667B1 (fr) 1992-04-08
ATA284687A (de) 1991-03-15
DE3869902D1 (de) 1992-05-14

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