EP1038978B1 - Procédé pour produire une bande laminée à chaud - Google Patents

Procédé pour produire une bande laminée à chaud Download PDF

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Publication number
EP1038978B1
EP1038978B1 EP00103097A EP00103097A EP1038978B1 EP 1038978 B1 EP1038978 B1 EP 1038978B1 EP 00103097 A EP00103097 A EP 00103097A EP 00103097 A EP00103097 A EP 00103097A EP 1038978 B1 EP1038978 B1 EP 1038978B1
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EP
European Patent Office
Prior art keywords
temperature
strip
hot strip
rolling
recrystallization
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.)
Revoked
Application number
EP00103097A
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German (de)
English (en)
Other versions
EP1038978A1 (fr
Inventor
Rudolf Prof. Dr.-Ing. Kawalla
Thomas Dr.-Ing. Heller
Bernhard Dr.-Ing. Engl
Karl Ernst Dipl.-Ing. Friedrich
Hans Dr.-Ing. Pircher
Hans-Peter Dipl.-Ing. Schmitz
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
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Application filed by ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Publication of EP1038978A1 publication Critical patent/EP1038978A1/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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • 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
    • B21B2201/00—Special rolling modes
    • B21B2201/04—Ferritic rolling
    • 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
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment

Definitions

  • the invention relates to a method for producing a Hot strip based on an unalloyed or low alloy steel with additions of Continuous casting microalloy elements in the form of reheated or straight from the pouring heat used slabs, thin slabs or cast tape is generated, the hot strip being one of several Rolling stands formed finished series passes through. Methods of this type are used to make high-strength Manufacture hot strips of high toughness.
  • DE-A-3437637 describes a method for rolling hot strip Known slabs. The process includes roughing. Finishing rolls and forced cooling during hot rolling and cooling after hot rolling.
  • Such a procedure can also be used for one CSP system is divided into two defined sections Rolling, namely rolling in the recrystallization area of the austenite and the subsequent rolling in the area below the recrystallization stop temperature, carry out.
  • This procedure is disadvantageous however, that the rolling performance is at least one of those in the Finished series not available rolling stands can be used. This leads to a significant one Limitation of the maximum achievable in finish rolling Forming degrees and, associated with it, to a considerable limitation of the variety of products that can be produced with such a method.
  • the object of the invention is a method to create the type specified above, which it enables a high-strength hot strip with outstanding To produce toughness inexpensively.
  • the rolling stock when it is in the Finished season is initiated, a temperature which safely above the recrystallization stop temperature lies.
  • This inlet temperature is set so that at least the first forming of the hot strip in the Finished scale in the recrystallization area of austenite is carried out. Through this in Recrystallization area of the austenite rolls grain refinement is achieved.
  • Hot strip before it is between the two rolling stands those below the recrystallization stop temperature lying temperature is cooled, at least once is cooled between previously passed rolling stands, without increasing the recrystallization stop temperature below.
  • This is particularly useful if the hot strip with a high temperature in the Finished relay arrives.
  • the hot rolling of the hot strip should take place in the austenite area.
  • the final rolling temperature of the hot strip should therefore be greater than Ar 3 + 30 ° C when leaving the finishing train.
  • the method according to the invention makes it possible to the method known from DE 197 25 434 A1, in one process carried out continuously to produce particularly good material properties.
  • These excellent material qualities can be seen in Procedure according to the invention also for hot strips achieve that from steels with diminished or even not present levels of expensive alloy and Microalloying elements such as Ti, Nb, V have been created are.
  • existing steel concepts with new steel qualities higher strength and excellent toughness become.
  • alloy contents be saved without becoming a negative Influencing the property spectrum comes.
  • the method according to the invention is self-evident not on the use of thin slabs or pre-rolled material is limited as the starting material, which is processed directly from the casting heat.
  • the invention within the conventional Hot strip rolling are used in the Continuous cast slabs are reheated before entering the Rolling mill to be introduced.
  • thermo-mechanical hot rolling usually fine-grained Structural structure is the procedure according to the invention refined further. It has thus been found that a conventionally thermo-mechanically rolled, 12.7 mm thick Hot strip with a set according to API X65 Microstructure with a pearlite-ferrite structure has an average ferrite grain diameter of 5 - 7.5 ⁇ m.
  • a comparable hot strip shows after that has gone through a method according to the invention average ferrite grain diameter of 3.5 to 4.5 microns. Ferrite grain inhomogeneities in the strip core become avoided. The same applies to the state of excretion, which has a finer dispersion and one Amount of precipitation hardening leads, which over the expected for conventionally rolled hot strips goes.
  • the Rolling temperatures taking into account the Recrystallization stop temperature unerringly and very can be set precisely. This enables the rolling in the recrystallization area just above the Carry out recrystallization stop temperature. So can the austenite grain refinement can be optimally used. The subsequent forming below the The recrystallization stop temperature then becomes Solidification of the fine-grained austenite grain structure used. This fine-grained and solidified Austenite structure leads to an optimal, very fine Microstructure after the ⁇ / ⁇ conversion.
  • Another advantage of the procedure according to the invention is that the surface condition of the hot strip is positively influenced. Through targeted cooling between the mill stands the scale formation is almost completely suppressed so that little material loss arise and the hot strip in the delivery condition with a small scale layer of less than 10 ⁇ m is occupied. On the one hand, this has advantages in direct use well adhering because thin scale, as expected for example in the manufacture of gas bottles, which painted without descaling after forming become. On the other hand, in cases where the Hot strip is descaled before it is processed, the time required for pickling, for example, is reduced and the capacity of the stain can be increased.
  • a hot strip line is suitable in which at least one the one between two mill stands of the finished series remaining cooling spaces arranged is.
  • a device is for example from the WO 90/06821 known.
  • the in addition to the usual Cooling of the roll stands is provided cooling device able to hot strip during the transition from one to the next roll stand to cool down so much that the Austenite recrystallization area after cooling is completely left and the subsequent rolling at temperatures below the recrystallization stop temperature is carried out.
  • the cooling device advantageously brings at least a high pressure water jet whose volume flow is adjustable.
  • Cooling device can easily reduce the cooling capacity be adapted to the respective requirements.
  • the latter applies in particular if the Cooling device comprises several nozzles, which individually or coolant can be applied in groups. It is also favorable, if not only between one of the a respective cooling device is provided, but if in several of the between two existing stands one each such device is arranged. This gives the Possibility to change the hot strip to a Temperature below the recrystallization stop temperature targeted at that for the respective rolling process optimal position with regard to the desired result perform.
  • the Finished relay FS from seven rolling stands F1, F2, F3, F4, F5, F6, F7 formed by a hot strip W are run through one after the other in the conveying direction F. It it goes without saying that the FS prefabricated season ever according to their design and performance with a fewer or a larger number of roll stands can be equipped.
  • This cooling device K1 Upstream of the first roll stand F1 in the conveying direction F. is a first cooling device K1.
  • This cooling device K1 has nozzles, not shown, through which water is blasted under high pressure on the hot strip W, before it enters the first mill stand F1.
  • each of the rolling stands F1, F2; F2, F3; F3, F4; F5, F6; F6, F7 each of the remaining rooms R. each have a cooling device K2, K3, K4, K5, K6, K7 arranged.
  • the cooling devices K2 - K7 have also nozzles, which via supply lines L are connected to a control device S. About the Control device S are the nozzles of the Cooling devices K2 - K7 optionally with high pressure standing cooling water.
  • the work here Cooling devices K2 - K7 additionally and independently of the cooling systems with which the respective rolling stands F1 - F7 are equipped as standard.
  • the run-out roller table A In the area of the run-out roller table A is at a short distance to the last rolling stand F7 of the FS 1 finishing mill conventionally designed cooling device K8, in the manner of a laminar cooling section or a accelerated cooling enabling compact cooling section Cooling water can be applied to the hot strip W.
  • a reel device H At the The end of the run-out roller table A is finally a reel device H, in which the hot strip W to Coils C can be wound.
  • the hot strip W is cooled in the first cooling device K1 by means of water applied under high pressure to a temperature which is in the range of a little more than 30 ° C above the recrystallization stop temperature T REK STOP des Steel lies from which the hot strip W has been produced.
  • a pre-rolled thin slab inserted directly from the casting heat or a strip produced by casting close to the final dimensions can be introduced into the finished batch. If necessary, the slab or the strip is cooled by the cooling device K1 to the required temperature T 1 above the recrystallization stop temperature.
  • the hot strip W cooled in this way is subjected to a first forming in the first roll stand F1. Since the temperature of the hot strip W is above the recrystallization stop temperature T REK STOP during this first shaping, this shaping takes place within the recrystallization range of the austenite.
  • the hot strip W is cooled, for example, by the cooling water, which is applied by the cooling device K2 between the first and the second roll stands F1, F2 under high pressure, at a cooling rate of more than 10 ° C./s to a temperature which is at least 20 ° C is lower than the recrystallization stop temperature T REK-STOP .
  • the hot strip W cooled in this way is finish-rolled in the roll stands F2 to F7 in the non-recrystallized area of the austenite, an overall degree of deformation ⁇ h being achieved in these roll stands F1-F7, which is more than 30%.
  • the further cooling devices K3-K7 arranged between the subsequent rolling stands F2-F7 remain inoperative in this case.
  • the temperature T 1 with which the hot strip W enters the finishing season FS can be set by a corresponding cooling capacity of the cooling device K1 so that the hot strip W is at a temperature above the recrystallization stop temperature T REK STOP also enters the second roll stand F2 in order to be rolled there in the recrystallization area of the austenite as well.
  • the hot strip W can then be cooled by the third cooling device K3 at cooling speeds of more than 10 ° C / s to a temperature T 2 which is at least 20 ° C below the recrystallization stop temperature T REK STOP and in the following roll stands F3 to F7 in the non-recrystallized austenite area with a total degree of deformation of at least 30%.
  • the cooling device K2 between the roll stands F1, F2 can be used to lower the temperature of the hot strip W before it enters the second roll stand F2, without, however, falling below the recrystallization stop temperature T REK STOP (FIG. 2).
  • the decisive step of cooling below the recrystallization stop temperature T REK STOP can thus be carried out at the most favorable point of the finished scale FS for the properties of the processed hot strip W.
  • the cooling devices which have passed through this crucial cooling can be used to cool the hot strip W without falling below the recrystallization stop temperature T REK STOP .
  • the need for cooling power in the decisive cooling can be reduced from a temperature above the recrystallization stop temperature T REK STOP to a temperature below the recrystallization stop temperature T REK STOP .
  • the hot strip W produced in this way becomes more advantageous Way to a cold strip with a thickness of less than 5 mm cold rolled, the during the cold rolling achieved total degree of deformation at least 55% should.
  • annealed cold strip with corrosion protection that in the form of hot dip galvanizing or electrolytically applied coating is formed.
  • hot strip samples P K1 , P K2 , P K3 produced in a conventional manner, the respective thickness D in mm, the final rolling temperature ET in ° C, the reel temperature HT in ° C, the yield strength R e in N / mm 2 , the tensile strength R m in N / mm 2 , the elongation at break A in%, the results of the BDWT test BDWT 0 ° C in% or BDWT 85 % in ° C, and the respective mean ferrite grain diameter FK m in ⁇ m.
  • Table 2 shows the same information for six hot strip samples P E1 , P E2 , P E3 , P E4 , P E5 , P E6 produced from the same steel in accordance with the invention.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Claims (13)

  1. Procédé de fabrication d'une bande à chaud (W), qui est produite à base d'un acier non allié ou faiblement allié avec des additifs d'éléments de microalliage par coulée continue sous la forme de brames réchauffées ou utilisées directement dans la bande de coulée, de brames minces ou d'une bande coulée, dans lequel la bande à chaud (W) traverse une table finisseuse (FS) formée de plusieurs cages de laminoir (F1 à F7), ledit procédé comprenant les étapes suivantes :
    l'insertion de la bande à chaud (W) dans là première cage de laminoir (F1) de la table finisseuse (FS) à une température (T1) qui se situe au moins 30°C au-dessus de la température d'arrêt de recristallisation (Tarr-rec);
    le laminage en continu de la bande à chaud (W) en une ou plusieurs passes dans la zone de recristallisation de l'austénite;
    le refroidissement de la bande à chaud (W) entre deux cages de laminoir (F1,F2; F2,F3; F3,F4; F4,F5; F5,F6; F6,F7) au moyen d'un dispositif de refroidissement (K2 à K7) à une température (T2), qui se situe au moins 20°C en dessous de la température d'arrêt de recristallisation (Tarr-rec), à une vitesse de refroidissement qui atteint au moins 10°C/s; et
    le laminage de la bande à chaud (W) refroidie en dessous de la température d'arrêt de recristallisation (Tarr-rec) en plusieurs passes avec un taux de déformation total (εh) d'au moins 30% dans la zone de température située en dessous de la température d'arrêt de recristallisation (Tarr-rec).
  2. Procédé selon la revendication 1, caractérisé en ce que l'acier contient en % en masse :
    C :   ≤ 0,18%
    Si :   ≤ 1,5%
    Mn :   ≤ 2,5%
    P :   0,005 à 0,1%
    S :   ≤ 0,03%
    N :   ≤ 0,02%
    Cr :   ≤ 0,5%
    Cu :   ≤ 0,5%
    Ni :   ≤ 0,5%
    Mo :   ≤ 0,5%
    Al :   ≤ 2%
    Jusqu'à, au total, 0,3% d'un ou plusieurs des éléments B, Nb, Ti, V, Zr et
    Pour le reste, du fer et des impuretés inévitables.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la température de laminage final (ET) de la bande à chaud (W) à la sortie de la table finisseuse (FS) est supérieure à Ar3 + 30°C.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande à chaud (W), avant d'être refroidie entre les deux cages de laminoir (F1,F2; F2,F3; F3,F4; F4,F5; F5,F6; F6,F7) à la température (T2) qui se situe en dessous de la température d'arrêt de recristallisation (Tarr-rec), est refroidie au moins une fois entre les cages de laminoir parcourues auparavant (F1 à F7), sans aller à cette occasion en dessous de la température d'arrêt de recristallisation (Tarr-rec).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande (W), après avoir quitté la table finisseuse (FS), au plus tard au bout de 10 secondes, est refroidie à une vitesse de refroidissement de plus de 20°C/s jusqu'à une température d'enroulement (HT) non supérieure à 650°C et ensuite enroulée.
  6. Procédé selon la revendication 5, caractérisé en ce que le refroidissement de la bande à chaud (W) commence au plus tard 2 secondes après sa sortie de la table finisseuse (FS).
  7. Procédé selon l'une quelconque des revendications 5 ou 6, caractérisé en ce que la température d'enroulement (HT) n'est pas supérieure à 550°C.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande à chaud (W) est galvanisée à chaud à des températures qui ne sont pas supérieures à 650°C.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande à chaud (W) est laminée à froid en une bande à froid d'une épaisseur de moins de 5 mm et en ce que le taux de déformation total atteint au cours du laminage à froid est d'au moins 55%.
  10. Procédé selon la revendication 9, caractérisé en ce que la bande à froid est recuite en se recristallisant.
  11. Procédé selon la revendication 10, caractérisé en ce que la bande à froid est galvanisée à chaud.
  12. Procédé selon l'une quelconque des revendications 10 ou 11, caractérisé en ce que la bande à froid est pourvue, par électrolyse, d'une protection contre la corrosion.
  13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'épaisseur de la bande à chaud (W) est d'au moins 8 mm.
EP00103097A 1999-03-25 2000-02-16 Procédé pour produire une bande laminée à chaud Revoked EP1038978B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19913498A DE19913498C1 (de) 1999-03-25 1999-03-25 Verfahren zum Herstellen eines Warmbandes und Warmbandlinie zur Durchführung des Verfahrens
DE19913498 1999-03-25

Publications (2)

Publication Number Publication Date
EP1038978A1 EP1038978A1 (fr) 2000-09-27
EP1038978B1 true EP1038978B1 (fr) 2004-05-12

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ID=7902339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103097A Revoked EP1038978B1 (fr) 1999-03-25 2000-02-16 Procédé pour produire une bande laminée à chaud

Country Status (4)

Country Link
EP (1) EP1038978B1 (fr)
AT (1) ATE266741T1 (fr)
DE (2) DE19913498C1 (fr)
ES (1) ES2220272T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013107010A1 (de) 2013-07-03 2015-01-22 Thyssenkrupp Steel Europe Ag Anlage und Verfahren zum Warmwalzen von Stahlband

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SK288275B6 (sk) * 2005-12-01 2015-06-02 Posco Oceľová doska na tvarovanie lisovaním za horúca s tepelnou úpravou a rázovými vlastnosťami, za horúca lisovaný diel z nej vyrobený a spôsob ich výroby
KR100660229B1 (ko) * 2005-12-26 2006-12-21 주식회사 포스코 두께 중심부의 강도와 인성이 우수하고 재질편차가 적은용접구조용 극후물 강판 및 그 제조방법
CN103447295B (zh) * 2013-08-14 2015-02-04 武钢集团昆明钢铁股份有限公司 一种低合金结构钢热轧钢板的制造方法
CN110665964B (zh) * 2019-10-14 2021-06-04 攀钢集团攀枝花钢铁研究院有限公司 一种薄规格x70管线钢带轧制方法
EP4101552A1 (fr) * 2021-06-09 2022-12-14 Primetals Technologies Austria GmbH Procédé de fabrication d'acier micro-allié, acier micro-allié fabriqué selon le procédé et installation combinée de coulée et de laminage

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US4662950A (en) * 1985-11-05 1987-05-05 Bethlehem Steel Corporation Method of making a steel plate for construction applications
GB8829272D0 (en) * 1988-12-15 1989-01-25 Davy Mckee Sheffield The operation of a multi-stand hot rolling mill
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DE19725434C2 (de) * 1997-06-16 1999-08-19 Schloemann Siemag Ag Verfahren zum Walzen von Warmbreitband in einer CSP-Anlage

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Publication number Priority date Publication date Assignee Title
DE102013107010A1 (de) 2013-07-03 2015-01-22 Thyssenkrupp Steel Europe Ag Anlage und Verfahren zum Warmwalzen von Stahlband
EP3016754B1 (fr) 2013-07-03 2019-09-04 ThyssenKrupp Steel Europe AG Installation et procédé pour laminer à chaud des feuillards d'acier
EP3016754B2 (fr) † 2013-07-03 2024-06-05 ThyssenKrupp Steel Europe AG Procédé pour laminer à chaud des feuillards d'acier

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DE19913498C1 (de) 2000-10-12
ATE266741T1 (de) 2004-05-15
EP1038978A1 (fr) 2000-09-27
ES2220272T3 (es) 2004-12-16
DE50006370D1 (de) 2004-06-17

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