EP1732716A1 - Procede pour produire un metal - Google Patents

Procede pour produire un metal

Info

Publication number
EP1732716A1
EP1732716A1 EP04725880A EP04725880A EP1732716A1 EP 1732716 A1 EP1732716 A1 EP 1732716A1 EP 04725880 A EP04725880 A EP 04725880A EP 04725880 A EP04725880 A EP 04725880A EP 1732716 A1 EP1732716 A1 EP 1732716A1
Authority
EP
European Patent Office
Prior art keywords
cooling section
metal
model
cooling
temperature
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
EP04725880A
Other languages
German (de)
English (en)
Other versions
EP1732716B1 (fr
Inventor
Klaus Weinzierl
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.)
Siemens AG
Original Assignee
Siemens 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
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Application filed by Siemens AG filed Critical Siemens AG
Priority to AT04725880T priority Critical patent/ATE373527T1/de
Publication of EP1732716A1 publication Critical patent/EP1732716A1/fr
Application granted granted Critical
Publication of EP1732716B1 publication Critical patent/EP1732716B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • 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
    • B21B37/76—Cooling control on the run-out table
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D9/573—Continuous furnaces for strip or wire with cooling

Definitions

  • the invention relates to a method for producing a metal, wherein the thermoformed metal is cooled in a cooling section, the temperature and at least one phase component of the metal in at least one in a first step with the aid of primary data for the metal by means of a cooling section model Location of the cooling section 3oerech.net. Furthermore, the invention relates to a computing device for the corresponding control and modeling of a cooling section, as well as a corresponding system for producing a metal and a correspondingly manufactured metal.
  • DE 101 29 565 AI discloses a cooling method for a hot-rolled rolling stock, in particular a metal strip.
  • a cooling method for a hot-rolled rolling stock in particular a metal strip.
  • an initial temperature is recorded in front of the cooling section for a rolling stock point
  • a coolant quantity curve f is determined on the basis of a cooling section model and predetermined target properties of the rolling stock
  • a coolant is applied to the rolling stock point in accordance with the determined coolant quantity curve over time, on the basis of the cooling section model and of the coolant over time, an expected temperature change over time
  • Rolld goods are determined at the rolling stock point over the cross section of the rolling stock and a heat conduction equation is solved in the cooling section model to determine the temperature profile in the rolling stock, which correlates the enthalpy, the thermal conductivity, the phase conversion degree, the density and the temperature of the rolling stock.
  • AI are expected of the metal strip compared with the target temperature curves. On the basis of this comparison, a new coolant quantity curve is then calculated.
  • Warm-formed metals produced and cooled in accordance with known processes often do not meet the properties or material properties required for their later use, or do so with insufficient reliability.
  • a method of the type mentioned in the introduction in which in a second step at least one. Measured value is recorded during the production of the metal and, with the aid of the at least one measured value, at least one phase component of the metal to be expected is calculated at the at least one point of the cooling segment by means of the cooling path model, the phase component to be expected in the second step being calculated with that calculated in the first step Phase component is compared and this comparison is used to adapt at least one manipulated variable of the cooling section.
  • the phase components at the end of the cooling section can be kept largely constant over the metal.
  • the at least one manipulated variable of the cooling section By adapting at least one manipulated variable of the cooling section, deviations between different belts with the same primary data are largely eliminated.
  • the at least one phase component is calculated in such a way that the system fluctuations are not included in the calculation, ie a degree of reference conversion is determined.
  • this reference degree of conversion is regulated, the actual fluctuations in the system being largely compensated for by adapting local control variables of the cooling section. According to the invention, in the manufacture of tall a constant quality can be ensured much better than with known methods.
  • the at least one point at which at least one phase component of the metal is located in the first or in the second step of the method is calculated, located at the end of the cooling section.
  • the expected phase component calculated in the second step is advantageously compared in the second step with a predetermined phase component. In this case, it is no longer necessary to compare the expected phase component calculated in the second step with the phase component calculated in the first step. In this way, direct specifications, for example by an operator, are taken into account when setting the phase component.
  • the second step is advantageous online, i.e. executed iteratively in real time during the manufacture of the metal.
  • the accuracy of the method is further improved.
  • At least one manipulated variable of the cooling section is advantageously adapted in accordance with the comparison by a cooling section controller.
  • the cooling section controller directly adjusts the manipulated variables of the cooling section based on the comparison of the phase components in accordance with the calculations from the first or second step. This ensures high control accuracy.
  • a cascaded control structure in which case the cooling section controller is provided with setpoints by a superimposed phase component controller.
  • the phase proportion controller fits at least one setpoint for the cooling section controller and the cooling section controller adjusts at least one manipulated variable of the cooling section, taking into account set values that are predetermined for it.
  • a temperature model is advantageously used in at least one of the two steps, which calculates the temperature profile of the metal in the cooling section.
  • the temperature of the metal With regard to the temperature of the metal, a particularly high control accuracy is achieved.
  • the temperature model is advantageously adapted with the aid of the at least one measured value. In this way, fluctuations in the production of the metal can be compensated for more effectively.
  • a conversion model is preferably used which calculates the course of the at least one phase component in the cooling section.
  • a multi-phase steel is advantageously produced. Especially with multi-phase steels, e.g. Dual phase steels or trip steels, keeping the phase components constant and thus the degree of conversion in the cooling section is particularly critical and important. These steels have particularly good material properties, for example for the automotive industry.
  • the metal in the cooling section is advantageously cooled in at least two cooling sections. In this way, desired phase fractions, in particular in the case of multi-phase steels, can be set in a targeted manner.
  • a holding time is preferably adjusted.
  • a holding temperature is advantageously adjusted.
  • sizes such as holding Time and holding temperature are particularly critical for the phase components in metal.
  • At least one manipulated variable for coolant actuators is advantageously adapted.
  • Coolant actuators are local actuators of the cooling section and therefore, for example, have no effect on a finishing train upstream of the cooling section.
  • the finishing train is not undesirably influenced by the adjustment of the manipulated variables for the coolant actuators.
  • At least one manipulated variable is advantageously adapted for the speed of the metal in the cooling section.
  • the speed of the metal in the cooling section can be influenced as far as possible regardless of the speed at which the metal passes through parts of the system upstream of the cooling section.
  • At least one manipulated variable is advantageously adapted for a metal lay time.
  • the metal's idle time is another local control variable for setting the phase proportions of the metal.
  • the object on which the invention is based is also achieved by a computing device according to claim 16 or 17.
  • the invention is also achieved by a system for producing a metal with a cooling section and with such a computing device, the computing device for controlling and modeling the cooling section being coupled to signal transmitters and actuators of the Kuril section via suitably designed interfaces.
  • the invention is also achieved by a metal according to claim 19. The result is particularly uniform material properties in the metal.
  • thermoformed metal 1 runs out of a roll stand 4 at a speed v in the strip running direction x.
  • the roll stand 4 is, for example, the last roll stand of a so-called finishing train.
  • Another cooling or processing device for the metal 1 can also be arranged upstream of the cooling section 5.
  • the cooling section 5 and any one or more devices upstream of it for shaping or processing the metal 1 and any devices downstream of the cooling section 5 form a system for producing a metal 1.
  • the cooling section 5 is followed by a reel device 12 with the help of which the cooled metal 1 is coiled into a coil.
  • the cooling section 5 can also be used for other devices not shown in the drawing Processing and / or storage of the metal 1 may be subordinate.
  • the metal 1 is steel in the solid state in the present case. However, it could also have an at least partially liquid state of matter. According to Figure 1, the metal 1 is designed as a metal strip or slab. But there are also other forms of metal 1, e.g. Rod-shaped profiles such as wires, pipes or U profiles are conceivable.
  • the cooling section 5 has one or more actuators 2.
  • the temperature T of the metal 1 can be influenced directly or indirectly by means of the actuator 2 - as a rule by cooling, but in some cases also by heating.
  • An actuator 2 can have, for example, one or more valves for applying a cooling medium to the metal 1.
  • a cooling medium for example, water or a mixture of water with other substances can be used as the cooling medium.
  • the cooling section 5 is controlled by the computing device 3. In particular, that too
  • Actuator 2 controlled by computing device 3 according to a manipulated variable S.
  • Measuring elements 6, 6 are provided, by means of which the temperature T of the metal 1 is detected.
  • a first measuring element 6 for temperature detection is arranged at the entrance of the cooling section, in the example shown behind the last roll stand 4.
  • Another measuring element 6 X for temperature detection is arranged at the end of the cooling section 5 or in the example shown in front of the reel device 12.
  • the computing device 3 outputs manipulated variables S to the actuators 2 of the cooling section. Measured values such as the temperature T from the cooling section 5 and / or from the cooling section upstream or downstream devices are fed to the computing device 3.
  • the actual speed v of the metal 1 can also be supplied to the computing device 3.
  • the actual speed v of the metal can be measured and / or with the help of at least one Model are determined.
  • the computing device 3 can also be supplied, for example, with the rotational speeds of the rolls of a roll stand 4 as measured values and / or calculated or modeled values.
  • the computing device 3 is also supplied with so-called primary data P.
  • Primary data P are generally used for the pre-calculation or presetting of a system and are dependent on the metal 1 to be produced. Different metal strips or slabs are usually characterized by different primary data. Primary data can also at least partially relate to the required properties of the metal 1 produced.
  • Figure 2 shows the course of the temperature T of the metal 1 in the cooling section 5 plotted over time t.
  • the time t relates to the time during which a strip point of the metal 1 present in strip form according to FIG. 1 passes through the cooling section 5.
  • the temperature T could also be plotted over the strip running direction x, ie the position in the cooling section.
  • the temperature T is used in its capacity as a quantity describing the energy content of the metal 1.
  • the phase components Pi at the end of the cooling section 5 or at the coiler device 12 are decisive for the material properties of the metal 1 or steel produced.
  • the phase components Pi of a metal 1 are particularly critical in production, particularly in the case of multi-phase steels such as dual-phase steels. and trip steels.
  • a customary cooling method is cooling divided into three cooling sections.
  • the metal 1 is cooled in the cooling section 5 in several temporal cooling phases, cooling phases or temporal cooling sections I, II, III.
  • the temporal cooling sections I, II, III can, but need not, coincide with spatial or component-related cooling sections.
  • the metal 1 is preferably cooled at a high cooling rate up to a holding temperature T H.
  • the holding temperature T H is generally predetermined or dependent on the primary data P.
  • air cooling takes place with a predetermined holding time t H.
  • the temperature T of the metal 1 or of the steel decreases only slightly.
  • the metal 1 is quenched to the temperature T or below the temperature T, which is to be achieved at the end of the cooling section or immediately before the winding up by means of the reel device 12.
  • the metal 1 is preferably quenched below the martensite start temperature.
  • a residual austenite content of typically 20% is usually aimed for before quenching begins.
  • a residual austenite content that is metastable at room temperature remains in the material, which converts to martensite when deformed.
  • FIGS. 3 and 4 show control systems according to the invention for the cooling section 5. Both figures show a computing device 3 coupled to the cooling section 5 for controlling and modeling the cooling section 5. Interfaces are provided in order to supply the computing device 3 with signals for modeling and around the cooling section 5 Control signals to be supplied. Computing device 3 and cooling section 5 form part of a system for producing a metal 1.
  • the computing device 3 has a cooling section model 7 and a cooling section controller 8.
  • the cooling section model 7 is used in a first step to trim the temperature T and at least one phase component Pi at the end of the cooling section 5 based on the primary data P for the metal strip. or calculated in front of the reel device 12.
  • measuring elements which can be arranged, for example, in a finishing line upstream of the cooling zone 5 (not shown in the drawing) and / or with the aid of a measuring element 6 at the entrance of the cooling zone 5, measured values are obtained in a second step detected and fed to the computing device 3. The measurement values are recorded while the metal 1 passes through the plant for producing a metal 1.
  • the cooling section model 7 determines at least at the end of the cooling section 5 at least one phase component Pi of the metal 1 to be expected.
  • the expected phase component Pi calculated in the second step is compared with the phase component Pi calculated in the first step on the basis of the primary data P. This comparison is used to adapt at least one manipulated variable S of the cooling section 5.
  • the cooling section controller 8 adjusts at least one manipulated variable S of the cooling section 5.
  • a relatively simple way of realizing such a cooling distance controller is such that manipulated variables S of actuators 2 are adapted as far as possible at the end of the first cooling section I.
  • the computing device 3 has a cooling section module 7, a cooling section controller 8 and a phase component controller 11.
  • the phase proportion controller 11 is superimposed on the cooling section controller 8.
  • the P-hash component controller 11 specifies at least one desired value, for example T H or t H , on the cooling section controller 8 on the basis of the comparison of the phase component Pi calculated in the first step and the expected phase component Pi calculated in the second step.
  • the phase proportion controller 11 preferably specifies a holding time t H and / or a holding temperature T H for the cooling section controller 8.
  • the cooling section controller 8 adjusts the manipulated variables S of the cooling section 5, taking into account the target specifications of the Ptiasen fraction controller 11.
  • Both control systems that is to say both the control system according to FIG. 3 and the control system according to FIG. 4, preferably work such that the second step is carried out iteratively online, ie in real time during the production of the metal 1.
  • the phase component Pi is determined in the same way, i.e. calculated using the same calculation methods or models.
  • the calculation in the two steps differs, however, with regard to the data on which the calculation is based, in particular with regard to the input data for the calculation.
  • phase component Pi calculated on the basis of the primary data P in the first step
  • a phase component Pi for example given by an operator in a first step
  • the expected phase component Pi calculated in the second step.
  • at least one phase component P of the metal 1 at the end of the cooling section is calculated.
  • At least one phase component P of the metal 1 can be calculated at at least one other point on the cooling section 5. If, for example, it is not expedient to measure at the end of the cooling section 5, at least one phase component P of the metal 1 can be calculated at another point in the cooling section 5 both in the first and in the second step of the method, e.g. at a point where it is assumed that the essential part of the phase conversion within the cooling section 5 has already been completed.
  • the computing device 3 or the cooling section model 7 preferably have a temperature model 9 which calculates the temperature profile of the metal 1 in the cooling section 5 over time t or over the strip running direction x.
  • the temperature model 9 is advantageously adapted with the aid of at least one measured value.
  • the at least one measured value is preferably a measured value for the temperature TUR of the metal 1, which is detected by means of a measuring element 6, 6 at the entrance or at the end of the cooling section 5.
  • the measured value acquisition can also take place at another point of the cooling section 5.
  • a conversion model 10 is preferably present, which calculates the course of the at least one phase component Pi of the metal 1 in the cooling section 5 over the time t and / or the strip running direction x.
  • the cooling section model 7 and / or the temperature model 9 can also use or calculate the enthalpy or another quantity describing the energy content.
  • a conversion model 10 is not shown in more detail in FIG. 4 for the sake of clarity, but is also expedient in the exemplary embodiment according to FIG. 4.
  • Provide a conversion model 10 uss at least the phase component Pi of the metal 1 at at least one point of the cooling section 5, preferably at the end of the cooling section 5.
  • manipulated variables S for the actuators 2 of the cooling section 5 e.g. the position of valves for coolant or the coolant flow in the cooling section 5 is regulated.
  • Such local manipulated variables S i.e. Actuating variables which have no effects on upstream system parts on the cooling section 5 can, however, also be the speed v of the metal 1 in the cooling section and a idle time of the metal 1 in the production of heavy plate.
  • an LT conversion model 10 is used for the cooling section 5, with the aid of which the phase components Pi along the steel strip are also calculated in real time in addition to the temperature T of the steel.
  • a control system is implemented which keeps the phase components Pi of the steel strip wound on a reel device 12 constant holds. This is done in the following steps: In a first step, the degree of conversion, in the case of multiphase steels, for example the ferrite content, is determined from data which are given from the primary data P of the steel strip.
  • one or more parameters of the cooling strategy ie manipulated variables S
  • the holding temperature T H can be modified. Raising the holding temperature T H reduces the ferrite content, lowering the holding temperature T H increases it.
  • Deviations from the target structure are already discovered online in accordance with the method according to the invention and are not only discovered after measurements of the structure components in the laboratory (cuts) or during tensile tests.
  • the constancy of the structural components along the strip was usually assessed by quality assurance in the steelworks only on the basis of the temperature records for the intermediate temperature and the reel temperature.
  • the method according to the invention enables the phase components P on the reel device 12 to be kept largely constant along the metal strip, even in the case of fluctuating production conditions and fluctuating speed v of the metal strip. Deviations between different metal strips with the same primary data P are largely eliminated because the fluctuations in the system are not included in the initial determination of the degree of reference conversion and due to the later
  • the first determination of the degree of reference conversion or at least one phase component Pi depends only on the primary data P.
  • the subsequent determinations of the degree of conversion or a phase component Pi take into account the fluctuations in manufacture. In this way, steel or metal 1 can remain the same Quality are produced and the requirements for the material properties of metal 1 or steel are met much more reliably than before.

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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)
  • Control Of Heat Treatment Processes (AREA)
  • Control Of Metal Rolling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Lors de la production d'acier, on utilise pour la section de refroidissement (5) un modèle de transformation (10) à l'aide duquel on calcule en temps réel, outre la température (T) de l'acier, également les fractions de phase (Pi) le long du ruban d'acier. On met en oeuvre un système de régulation qui maintient constantes les fractions de phase (Pi) du ruban d'acier enroulé sur un dispositif bobineur (12). A cet effet, le procédé selon l'invention comprend les étapes suivantes. Lors d'une première étape, on détermine, à partir de données dérivées des données primaires (P) du ruban d'acier, le degré de transformation, par exemple la fraction de ferrite pour les aciers multiphasés. Lors d'une deuxième étape, on adapte en ligne, lors de l'entrée du ruban dans la section de refroidissement (5), en vue d'une régulation un ou plusieurs paramètres de la stratégie de refroidissement, à savoir des grandeurs réglantes (S), de façon à maintenir constante la fraction de ferrite de l'acier refroidi sur le dispositif bobineur (12).
EP04725880A 2004-04-06 2004-04-06 Procede pour produire un metal Revoked EP1732716B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT04725880T ATE373527T1 (de) 2004-04-06 2004-04-06 Verfahren zum herstellen eines metalls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2004/000724 WO2005099923A1 (fr) 2004-04-06 2004-04-06 Procede pour produire un metal

Publications (2)

Publication Number Publication Date
EP1732716A1 true EP1732716A1 (fr) 2006-12-20
EP1732716B1 EP1732716B1 (fr) 2007-09-19

Family

ID=34957437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04725880A Revoked EP1732716B1 (fr) 2004-04-06 2004-04-06 Procede pour produire un metal

Country Status (7)

Country Link
US (1) US7853348B2 (fr)
EP (1) EP1732716B1 (fr)
JP (1) JP2007531629A (fr)
CN (1) CN101056721B (fr)
DE (2) DE112004002902A5 (fr)
ES (1) ES2291867T3 (fr)
WO (1) WO2005099923A1 (fr)

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US8369979B2 (en) 2008-02-27 2013-02-05 Siemens Aktiengesellschaft Method of operation for a cooling track for cooling a rolling product, with cooling to an end enthalpy value uncoupled from temperature
US10413950B2 (en) 2014-01-28 2019-09-17 Primetals Technologies Germany Gmbh Cooling path with twofold cooling to a respective target value
WO2020053230A1 (fr) 2018-09-10 2020-03-19 voestalpine Automotive Components Dettingen GmbH & Co. KG Procédé et dispositif pour relier des pièces de tôles de façon à former des paquets de tôles

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EP2468905A1 (fr) 2010-12-22 2012-06-27 Siemens VAI Metals Technologies GmbH Tunnel de refroidissement doté d'un système de stockage à bande verticale intégré
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CN102749863B (zh) * 2012-07-09 2014-10-29 首钢总公司 钢卷数据的同步方法
AT514380B1 (de) 2013-05-03 2015-04-15 Siemens Vai Metals Tech Gmbh Bestimmung des ferritischen Phasenanteils nach dem Erwärmen oder Abkühlen eines Stahlbands
AT513750B1 (de) * 2013-05-03 2014-07-15 Siemens Vai Metals Tech Gmbh Bestimmung der ferritischen Phasenanteile beim Abkühlen eines Stahlbands
DE102014224461A1 (de) 2014-01-22 2015-07-23 Sms Siemag Ag Verfahren zur optimierten Herstellung von metallischen Stahl- und Eisenlegierungen in Warmwalz- und Grobblechwerken mittels eines Gefügesimulators, -monitors und/oder -modells
DE102014222827A1 (de) * 2014-11-07 2016-05-12 Sms Group Gmbh Verfahren zum Steuern und/oder Regeln einer metallurgischen Anlage
MX2019007171A (es) * 2016-12-20 2019-08-29 Arcelormittal Un metodo de ajuste dinamico para la fabricacion de una hoja de acero tratado termicamente.
DE102018205685A1 (de) 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung und Verfahren zu deren Betrieb
KR102639249B1 (ko) 2019-03-05 2024-02-22 삼성전자주식회사 블루투스 네트워크에서 채널 정보를 공유하기 위한 방법 및 이를 위한 전자 장치
DE102019209163A1 (de) * 2019-05-07 2020-11-12 Sms Group Gmbh Verfahren zur Wärmebehandlung eines metallischen Produkts
EP4101553B1 (fr) * 2021-06-07 2024-01-31 Primetals Technologies Austria GmbH Refroidissement d'un produit laminé en amont d'un train finisseur d'un laminoir à chaud

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US8369979B2 (en) 2008-02-27 2013-02-05 Siemens Aktiengesellschaft Method of operation for a cooling track for cooling a rolling product, with cooling to an end enthalpy value uncoupled from temperature
US10413950B2 (en) 2014-01-28 2019-09-17 Primetals Technologies Germany Gmbh Cooling path with twofold cooling to a respective target value
WO2020053230A1 (fr) 2018-09-10 2020-03-19 voestalpine Automotive Components Dettingen GmbH & Co. KG Procédé et dispositif pour relier des pièces de tôles de façon à former des paquets de tôles

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DE112004002902A5 (de) 2007-05-24
US7853348B2 (en) 2010-12-14
ES2291867T3 (es) 2008-03-01
JP2007531629A (ja) 2007-11-08
DE502004005051D1 (de) 2007-10-31
CN101056721A (zh) 2007-10-17
WO2005099923A1 (fr) 2005-10-27
EP1732716B1 (fr) 2007-09-19
CN101056721B (zh) 2010-09-01
US20070198122A1 (en) 2007-08-23

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