EP0264868A2 - Laminoir à fers moyens et marchands - Google Patents

Laminoir à fers moyens et marchands Download PDF

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Publication number
EP0264868A2
EP0264868A2 EP87115220A EP87115220A EP0264868A2 EP 0264868 A2 EP0264868 A2 EP 0264868A2 EP 87115220 A EP87115220 A EP 87115220A EP 87115220 A EP87115220 A EP 87115220A EP 0264868 A2 EP0264868 A2 EP 0264868A2
Authority
EP
European Patent Office
Prior art keywords
steel mill
sections
finishing
cooling
last
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
EP87115220A
Other languages
German (de)
English (en)
Other versions
EP0264868A3 (en
EP0264868B1 (fr
Inventor
Hubert Müller
Claus Schlanzke
Ulrich Svejkovsky
Hugo Dr. Feldmann
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6799400&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0264868(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT87115220T priority Critical patent/ATE101065T1/de
Publication of EP0264868A2 publication Critical patent/EP0264868A2/fr
Publication of EP0264868A3 publication Critical patent/EP0264868A3/de
Application granted granted Critical
Publication of EP0264868B1 publication Critical patent/EP0264868B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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
    • B21B45/02—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 for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
    • 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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or 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

Definitions

  • the invention relates to a fine or medium steel mill with a preliminary series, at least one intermediate series and at least one finished series, an upstream furnace and a downstream water cooling section.
  • Such fine or Medium steel mills are widely used to roll down stronger starting material, for example square square billets with 200 mm profile lengths, by means of caliber rolls to changing, desired dimensions.
  • Such a fine or medium steel mill is usually followed by a water cooling section, which on the one hand is intended to prevent excessive scale formation after leaving the street and by means of which the mechanical properties of the rolling stock which are also favorable are to be achieved.
  • the invention is therefore based on the object of designing a fine or medium steel mill in such a way that a rolling stock of advantageous structure and thus improved mechanical properties is achieved.
  • FIG. 1 A typical fine steel mill for the invention is shown schematically in FIG. 1.
  • the street itself is formed by scaffolding 1 to 21; here change horizontal with vertical stands, and only the finishing stand 21 is designed as a universal stand.
  • the stands 1 and 2 still rolling rectangular cross-sections, while the following stands 3 to 20 Alternate oval and round cross sections effect and the finishing stand 21 also rolled round cross sections.
  • the billets to be rolled are preheated to the rolling temperature in the furnace 22.
  • a water cooling section 24 is provided between the stands 12 and 13, a water cooling section 25 with a subsequent recovery section 26 is arranged behind the stand 16, and a further water cooling section with a subsequent long recovery section 28 is incorporated behind the stand 18.
  • the water cooling section 24 is only effective in special cases, for example when a material is rolled in which higher core temperatures are to be avoided. But the water cooling sections 25 and 27 are already in operation during normal rolling.
  • the water cooling section 25 causes pre-cooling, and the actual cooling to the optimum rolling temperature for the finishing batch takes place only in the water cooling section 27; the downstream long recovery section 28 causes a large temperature adjustment of the surface of the rolling stock to the temperature of the core, so that there is a largely homogeneous temperature field within the rolling cross section for the final deformation.
  • curves then result, as exemplarily shown diagrammatically in FIG. 2.
  • Curve a indicates the core temperature as a function of the distance covered within the fine steel mill
  • curve b represents the temperature of the surface of the rolling stock
  • curve c represents the mean temperature
  • the surface of the rolling stock is already cooled as it passes through a stand by direct contact with the cool jackets of the rolls within the forming area. In the center, however, the temperature rises due to the conversion of the deformation energy into heat. After passing through a scaffold, the surface temperature also recovers to a certain extent. In the area of the serrations reaching down to 400 ° C, the surface is cooled by four successive exposures to water, and the surface temperature recovers between the individual cooling units. The mean temperature is also reduced; however, an impact on the core temperature only occurs after a remarkable recovery route, which is almost too high in the diagram. 80 m length was chosen.
  • the average rolling temperature of about 1000 ° before reaching the finishing scale is significantly reduced by about 200 °, so that the grain growth is delayed accordingly and after leaving the last stand under the influence of one downstream of the road , further cooling section not taken into account in the figures is further slowed down, so that a fine steel mill equipped in this way and working in accordance with the invention works in the finishing line at a reduced temperature, which provides a fine-grained and excellent mechanical properties starting material.
  • the temperature diagram of FIG. 2 illustrates in detail the conditions prevailing when rolling round steel 62 mm ⁇ .
  • the stands 1 to 10 of FIG. 1 are in their position shown in FIG. 1, the stands 11 to 20 are extended from the rolling line, and the stands 11 and 12 corresponding to the stands are instead of the stands 19 and 20 Finishing stand 21 arranged upstream.
  • Four water cooling sections corresponding to the water cooling sections 25 and 27 are used in the space which has been freed by the extension of the scaffolding 11 to 16; there is also the possibility to use the permanently installed water cooling sections 24 and 25 and between to install two more water cooling lines.
  • the length measurement starts here in the center plane of the scaffold 1.
  • the last two spikes of curve b pointing downward now represent the cooling in the stands 11 and 12 in places 19 and 20, and the cooling within the finishing stand 21 is no longer shown in the diagram.
  • FIG. 3 Another version of a fine steel mill is shown in FIG. 3.
  • horizontal and vertical stands 1 to 20 are alternately provided to achieve the same performance in order to achieve the smallest dimensions to be rolled on the fine steel mill, and the stands 19 that are effective in the finishing line and 20 is a universal scaffold 21 downstream.
  • a cropping shear and a descaling device 34 are arranged upstream of the road, and rotating shears 35 and 36 are provided in the road.
  • a transverse transport 29 is provided, offset against the rolling direction, which is capable of picking up billets and feeding the further stands, which are arranged offset, to the fine steel mill.
  • This transverse transport is designed in such a way that it can pick up several, for example up to six or up to ten, billets and can hold them for cooling over appropriate times, only moved laterally. In the case of difficult materials, a longer pre-cooling time can lower undesirably high core temperatures.
  • water cooling sections 25 and 27 are provided, each with recreational sections 26 and 28 arranged after them, which operate when the billets are fully rolled out to the smallest cross-sections.
  • the finishing stand 21 remains in its place, but is operated with positions or calibres corresponding to the dimensions of the desired finished product.
  • the increased drive torque requirement due to the rolling of larger dimensions in the finished group can also be taken into account here by using correspondingly stronger drive motors, comb-rolling stands, spindles or spindle heads.
  • comb stands with different transmission ratios
  • FIG. 4 Another possibility is explained with reference to FIG. 4.
  • the furnace 22, cropping shears and descaling device 34 as well as rotating shears 35 and 36 are shown between a number of stands, which in turn was chosen for a total of 21.
  • the stands 17 and 18, however, have also been incorporated into the finished series, so that when cooling by means of the cooling device 32, the cooling process relates to rolling stock that runs more slowly and can thus be designed more effectively.
  • the temperature compensation serving section 33 is suitably adapted to the stronger cooling and heat compensation of stronger material.
  • the stands 19 and 20 are first removed, and the stands 17 and 18 can move up in their place.
  • further stands are removed from the rolling line, the last still effective stands moving to the positions of stands 19 and 20 or, when changing over four stands, to places 17 to 20.
  • the total number of stands to be used for the fine steel mill depends on the smallest cross section to be rolled on this fine steel mill or the highest reduction to be carried out from the incoming semi-finished product to the finished product, whereby an optimal caliber distribution on the rollers must be taken into account as well as an optimization of the Roll diameter on the cross section to be rolled.
  • the last of the stands, combined into a finished scale, are used for the final rolling of the finished product, and in order to achieve favorable stress values for the finished product, the rolling in the finished season is effected at such a reduced temperature that the required drive moments in as a result of the temperature-related increase in the forming work of the material, with a corresponding reduction in the finishing scaffold, preferably in the finishing stand, the resulting trimmer structure of the grain growth that decreases with the reduced rolling temperature is only offered because of this slight grain growth when the austenite is converted into Perlite to get fine-grained, fine-streaked pearlite.
  • the cross-section of the finished product increases, fewer scaffolds are required.
  • the scaffolds not required are removed or pushed out, but the finishing scaffold 21 or scaffolds corresponding to this remain and are only adapted to the enlarged caliber.
  • the last of the stands still in use are moved and placed in front of the dertig stand;
  • prepared scaffolds are expediently inserted, for example into places 19 and 20 of the exemplary embodiments. The insertion is simplified if appropriate midsole plates are prepared for this.
  • the cooling of the rolling stock entering the last or the last stands which is essential for achieving an optimal structure, is effected by means of water cooling sections, one of which is arranged upstream of the finishing relay while maintaining a sufficient recovery section.
  • the scaffold locations that have become free can be made effective instead of or in addition to the originally intended water cooling sections by equipping the vacant places with the spray devices of the water cooling sections.
  • the available recovery section can also be extended, thus achieving better temperature compensation between the core and the outer skin of the rolling stock.
  • the water cooling sections are preferably arranged such that they run on round or square cross sections.
  • the water cooling sections are preferably provided in the area of the last stands, so that a maximum cooling effect is achieved and, due to the small number of subsequent stands, the smallest reheating of the rolling stock is achieved due to the deformations that occur. Late cooling has also proven its worth, since the deformation work increases with the onset of cooling and, on the one hand, the drive is subjected to greater stress, but, on the other hand, the scaffold wear also increases due to the greater forces and moments to be applied.
  • each of the water cooling sections 25 and 27 is followed by a relaxation section 26 and 28; however, the initially continuous recovery section 26 is only intended to allow the core temperature to approximate to the outside temperature in order to enable sufficient cooling in the subsequent water cooling section without the surface being undercooled.
  • the last of the recreational routes is dimensioned such that the temperature compensation is advanced as desired during the finishing rolling in the finishing season. If the recreational zones required here become undesirably long, the water cooling sections upstream from them can be preceded against the rolling direction be placed.
  • the diameters of the rolls can advantageously be minimized since only a narrowly limited cross-sectional area is rolled in each of the stands, except that of the finished group. These possible small roll diameters result in a reduced width with a correspondingly increased lengthening of the rolling stock, and as a result, only a smaller decrease in height is required in the following stands or an increased reduction is made possible, so that lower rolling forces, lower drive torques and a reduced motor output with a correspondingly reduced Energy consumption can be achieved. Since essentially the same cross-sections are reduced in every scaffolding, except for those of the prefabricated structure, any changes to the dimensions of the finished product which are required are also reduced to a minimum. Except for the finished scale, when changing the program it is necessary to extend or retract certain stands, but not to change the rollers.
  • cooling within the fine steel mill is provided to obtain a finished material of increased quality or resilience, which, however, is essentially effected before the finishing relay, and which is arranged after a correspondingly long recovery route in order to achieve a large temperature balance between the inside and the outside to secure outer districts of the rolling stock.
  • an additional cooling section with a shorter recovery section can be arranged in front, and for materials that are sensitive to an increase in core temperature, a corresponding upstream cooling device can also be used, which is designed as a water cooling section or as a storage and cooling transport that allows cooling can be.
  • it has proven effective not to lower the temperature in the front of the scaffolding in order to be able to drive with the previous drive powers, and to carry out the desired temperature reduction only before the last of the scaffolding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Lubricants (AREA)
  • Disintegrating Or Milling (AREA)
EP87115220A 1986-10-20 1987-10-17 Laminoir à fers moyens et marchands Revoked EP0264868B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115220T ATE101065T1 (de) 1986-10-20 1987-10-17 Fein- oder mittelstahlstrasse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8627940U 1986-10-20
DE8627940 1986-10-20

Publications (3)

Publication Number Publication Date
EP0264868A2 true EP0264868A2 (fr) 1988-04-27
EP0264868A3 EP0264868A3 (en) 1989-03-22
EP0264868B1 EP0264868B1 (fr) 1994-02-02

Family

ID=6799400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115220A Revoked EP0264868B1 (fr) 1986-10-20 1987-10-17 Laminoir à fers moyens et marchands

Country Status (3)

Country Link
EP (1) EP0264868B1 (fr)
AT (1) ATE101065T1 (fr)
DE (1) DE3788996D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0358917A2 (fr) * 1988-09-05 1990-03-21 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour l'actionnement d'un laminoir à barres avec un parcours de refroidissement disposé en ligne de laminage pour le finissage thermodynamique et laminoir à barres pour la mise en oeuvre de ce procédé
EP0407764A1 (fr) * 1989-07-10 1991-01-16 DANIELI & C. OFFICINE MECCANICHE S.p.A. Laminoir à plusieurs cylindres montés en porte-à-faux pour le laminage à grande vitesse
DE4207296A1 (de) * 1992-03-07 1993-09-09 Schloemann Siemag Ag Feinstahl/drahtstrasse
DE4207298A1 (de) * 1992-03-07 1993-09-09 Schloemann Siemag Ag Verfahren und walzwerk zum praezisionswalzen von draht bzw. von walzgut mit rundquerschnitt
EP0571789A1 (fr) * 1992-05-23 1993-12-01 Sms Schloemann-Siemag Aktiengesellschaft Laminoir pour fils ou barres avec un train continu à fils ou à barres
EP0788845A1 (fr) * 1996-02-12 1997-08-13 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé pour laminer des produits longs, et train de laminage pour la mise en oeuvre du procédé
US6327885B1 (en) 1999-07-26 2001-12-11 Voest-Alpine Industrieanlagenbau Gmbh Rolling-mill installation
ITMI20081991A1 (it) * 2008-11-11 2010-05-12 Danieli Off Mecc Processo di trattamento termico di laminati
DE19881711B4 (de) * 1997-11-10 2012-07-26 Siemens Ag Verfahren und Einrichtung zur Steuerung einer Hüttentechnischen Anlage

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE709228A (fr) * 1968-01-11 1968-05-16
DE1433760A1 (de) * 1962-08-24 1970-01-22 Morgan Construction Co Anwendung der Stufenkuehlung zur Verguetung gewalzten Stahls und dabei hergestellter Stahldraht
DE1533999B2 (fr) * 1967-01-17 1970-12-10
DE1608387A1 (de) * 1962-08-24 1971-02-11 Morgan Construction Co Vorrichtung und Verfahren fuer das gesteuerte Kuehlen von Draht
FR2196207A1 (fr) * 1972-08-18 1974-03-15 Morgan Construction Co
FR2251384A1 (fr) * 1973-11-15 1975-06-13 Bethlehem Steel Corp
DE2602656A1 (de) * 1975-01-29 1976-08-05 Centre Rech Metallurgique Verfahren fuer die herstellung von walzstahlerzeugnissen
DE2717780A1 (de) * 1977-04-21 1978-11-02 Hamburger Stahlwerke Gmbh Verfahren zur herstellung von walzdraht
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
DD236885A1 (de) * 1985-05-06 1986-06-25 Thaelmann Schwermaschbau Veb Verfahren zum ueberwachen der walzguttemperatur
JPS61183412A (ja) * 1985-02-08 1986-08-16 Nippon Steel Corp 低抗張力高靭性線材の製造方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1433760A1 (de) * 1962-08-24 1970-01-22 Morgan Construction Co Anwendung der Stufenkuehlung zur Verguetung gewalzten Stahls und dabei hergestellter Stahldraht
DE1608387A1 (de) * 1962-08-24 1971-02-11 Morgan Construction Co Vorrichtung und Verfahren fuer das gesteuerte Kuehlen von Draht
DE1533999B2 (fr) * 1967-01-17 1970-12-10
BE709228A (fr) * 1968-01-11 1968-05-16
FR2196207A1 (fr) * 1972-08-18 1974-03-15 Morgan Construction Co
FR2251384A1 (fr) * 1973-11-15 1975-06-13 Bethlehem Steel Corp
DE2602656A1 (de) * 1975-01-29 1976-08-05 Centre Rech Metallurgique Verfahren fuer die herstellung von walzstahlerzeugnissen
DE2717780A1 (de) * 1977-04-21 1978-11-02 Hamburger Stahlwerke Gmbh Verfahren zur herstellung von walzdraht
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
JPS61183412A (ja) * 1985-02-08 1986-08-16 Nippon Steel Corp 低抗張力高靭性線材の製造方法
DD236885A1 (de) * 1985-05-06 1986-06-25 Thaelmann Schwermaschbau Veb Verfahren zum ueberwachen der walzguttemperatur

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 11, Nr. 3 (C-395)[2450], 7. Januar 1987; & JP-A-61 183 412 (NIPPON STEEL CORP.) 16-08-1986 *
STAHL UND EISEN, Band 95, Nr. 19, 11. September 1975, Seiten 869-874; H. ROTHE: "Eine neue Drahtstrasse f}r Edelstahl" *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0358917A2 (fr) * 1988-09-05 1990-03-21 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour l'actionnement d'un laminoir à barres avec un parcours de refroidissement disposé en ligne de laminage pour le finissage thermodynamique et laminoir à barres pour la mise en oeuvre de ce procédé
EP0358917A3 (fr) * 1988-09-05 1992-03-18 Sms Schloemann-Siemag Aktiengesellschaft Procédé pour l'actionnement d'un laminoir à barres avec un parcours de refroidissement disposé en ligne de laminage pour le finissage thermodynamique et laminoir à barres pour la mise en oeuvre de ce procédé
EP0407764A1 (fr) * 1989-07-10 1991-01-16 DANIELI & C. OFFICINE MECCANICHE S.p.A. Laminoir à plusieurs cylindres montés en porte-à-faux pour le laminage à grande vitesse
US5060499A (en) * 1989-07-10 1991-10-29 Danieli & C. Officine Meccaniche Spa Rolling stand with multiple rolls supported as cantilevers for high-speed rolling
DE4207296A1 (de) * 1992-03-07 1993-09-09 Schloemann Siemag Ag Feinstahl/drahtstrasse
DE4207298A1 (de) * 1992-03-07 1993-09-09 Schloemann Siemag Ag Verfahren und walzwerk zum praezisionswalzen von draht bzw. von walzgut mit rundquerschnitt
EP0571789A1 (fr) * 1992-05-23 1993-12-01 Sms Schloemann-Siemag Aktiengesellschaft Laminoir pour fils ou barres avec un train continu à fils ou à barres
EP0788845A1 (fr) * 1996-02-12 1997-08-13 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé pour laminer des produits longs, et train de laminage pour la mise en oeuvre du procédé
US5862699A (en) * 1996-02-12 1999-01-26 Danieli & C. Officine Meccaniche Spa Method for the rolling of long products and rolling line which performs that method
DE19881711B4 (de) * 1997-11-10 2012-07-26 Siemens Ag Verfahren und Einrichtung zur Steuerung einer Hüttentechnischen Anlage
DE19881711C5 (de) * 1997-11-10 2019-02-14 Primetals Technologies Germany Gmbh Verfahren und Einrichtung zur Steuerung einer Hüttentechnischen Anlage
US6327885B1 (en) 1999-07-26 2001-12-11 Voest-Alpine Industrieanlagenbau Gmbh Rolling-mill installation
ITMI20081991A1 (it) * 2008-11-11 2010-05-12 Danieli Off Mecc Processo di trattamento termico di laminati
WO2010055067A1 (fr) * 2008-11-11 2010-05-20 Danieli & C. Officine Meccaniche S.P.A. Procédé de laminage et de traitement thermique de sections laminées

Also Published As

Publication number Publication date
ATE101065T1 (de) 1994-02-15
DE3788996D1 (de) 1994-03-17
EP0264868A3 (en) 1989-03-22
EP0264868B1 (fr) 1994-02-02

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