EP1257687A2 - Verfahren und einrichtung zum beizen von gewalztem metall-, insbesondere von stahlband - Google Patents
Verfahren und einrichtung zum beizen von gewalztem metall-, insbesondere von stahlbandInfo
- Publication number
- EP1257687A2 EP1257687A2 EP01919285A EP01919285A EP1257687A2 EP 1257687 A2 EP1257687 A2 EP 1257687A2 EP 01919285 A EP01919285 A EP 01919285A EP 01919285 A EP01919285 A EP 01919285A EP 1257687 A2 EP1257687 A2 EP 1257687A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pickling
- measured values
- coil
- scale
- measured
- 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.)
- Withdrawn
Links
- 238000005554 pickling Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 7
- 239000010959 steel Substances 0.000 title claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 235000021110 pickles Nutrition 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
Definitions
- the invention relates to a method and a device for pickling metal, in particular steel strip, which is fed to a controlled pickling process.
- a method for pickling a metal strip is known from DE 19743 022 A1, which is based on a measurement in the direction of flow behind the pickling system and in which pickling parameters are set according to defect categories that the measuring device detects, such as Temperature of the pickling liquid, throughput speed of the metal strip, the acid content in the pickling liquid, the metal content, in particular the iron content, strip parameters, e.g. Material and geometrical dimensions.
- the defects can only be determined retrospectively and conclusions can be drawn about a cheaper stain.
- the controlled system only covers the pickling system itself.
- EP 0482725 A1 Another known method (EP 0482725 A1) works with turbulent flows which are generated in the pickling tank by nozzles. The aim is to achieve an optimal pickling result with minimal consumption of pickling medium. This result is to be achieved by regulating the turbulence of the flow in the pickling medium as a function of the throughput speed of the strip to be pickled. Further effects are not expected.
- Another method for pickling a rolled strip in a pickling plant is known from EP 0602437 B1. The process is based on a special mode of operation of several pickling tanks connected in series.
- An acidic pickling medium is injected into the pickling tank via injection nozzles arranged at least on the side, above and below the belt running level on the pool, the nozzles being variably controlled and the pickling medium being input in any desired quantity.
- the acid concentration and / or the medium temperature and / or the nozzle outlet speed of the pickling medium can be preselected.
- the object of the invention is to carry out the pickling process not only on the basis of the usual pickling parameters, but also to take additional parameters outside the pickling tank into account.
- the object is achieved according to the invention in that the pickling process in addition to the pickling medium parameters is regulated on the basis of parameters of the coil and / or the metal strip that have been determined and / or measured before the metal strip enters the pickling part.
- the advantage is to set the pickling parameters in advance so that under or over pickling is avoided, the acid concentration and the acid supply are set correctly and the pickling medium is used economically so that the correct temperature can be calculated in advance together with other pickling parameters to be set in advance. After casting, hot forming and after annealing removed scale, pre-descaling and other deposits can already be taken into account.
- the invention therefore also takes into account the fact that the scale has broken up (via stretch bending straighteners), with cracks and pores in the scale layer which enlarge the surface wetted by acid.
- the amount of scale to be dissolved in the pickling process can be reduced, so that the pickling time is reduced depending on the type of pre-descaling can be. If the temperature of the metal strip is increased before it runs into the stain, the contact time between the strip surface and the pickling medium is extended at the optimum pickling temperature. The heating distance of the metal strip is shortened and the pickling time is reduced. The pickling time also decreases if the scale is removed by laser optics before entering the pickle and the amount of scale to be removed is reduced.
- the method is used in such a way that the pickling process is preset with measured values of a coil on the basis of a built-up calculation model and on the basis of a control calculation model that at least measures values for scale; Strip temperature; Pickling medium temperature and / or acid concentration is taken into account, is regulated.
- the amount of scale needs e.g. no longer being valued, as has been the case so far.
- the goal of such an optimization can be: minimal energy consumption, more variable coil sequences, accelerated reaction to the type and amount of surface contamination, minimization of pickling consumption and pickling losses, minimization of over-pickling and minimization of under-pickling.
- measuring devices for detecting the scale its layer thickness, shape, distribution and color can be used. Exact calculation models are used for this.
- actuators of the pickling are regulated or readjusted. This enables regulation of the pickling section with the shortest possible transmission times.
- the procedure is such that additional measured values for scale deposits or deposits are recorded in an area in the direction of movement in front of the pickling part and are used for readjusting the actuators of the pickling part and / or for comparing measured or calculated values. Additional parameters outside the pickling section are taken into account in that the pickling times are regulated based on the strip entrance information of the coil and the machine setting.
- Another method step provides that the recorded measured values via the deposits or the scale are used for regulating a pretreatment unit upstream of the pickling part.
- the pickling medium can be regulated even more precisely in its parameters due to the pretreatment unit.
- pretreatment unit and the actuators of the pickling part are readjusted in comparison with the measured or calculated values.
- the device for pickling rolled metal, in particular steel strip, which can be fed in the treatment direction from a coil of a pickling system, for which a control of several parameters is provided solves the task in that coil measurement or information sensors have a structure - Computational model Measured values can be switched to the control units of the pickling section using a control computing model. This allows the pickling section to be operated more economically and more precisely, which leads to the advantages mentioned.
- measured values from coil measured value sensors can be entered into the control calculation model.
- the construction computing model uses general input information for the metal strip. From this, scale orders can already be calculated using calculation approaches to preset or adjust the slow and fast actuators of the pickling section.
- measured values from a transducer via the linings or the scale can be used to readjust the actuator of the pickling part.
- the pickling part is preceded by a pretreatment unit, the measured values of which can be input into the control computing model.
- the pretreatment unit can influence the pickling time if the necessity is recognized and the coil information and the current machine setting are evaluated appropriately.
- the pretreatment unit can be a preheating unit, a mechanical, an abrasive, a hydromechanical, a laser-optical or a vibration descaler.
- a further improvement is given by the fact that an induction heater for the strip is switched on between the pretreatment unit and the pickling part.
- the inductive preheating of the metal strip is switched on before the pickling and is used to quickly regulate the metal strip temperature and to set the metal strip pickling temperature.
- Fig. 1 is a block diagram of the coil and pickling plant with control in one
- FIG. 3 shows the block diagram in a second variant with a pretreatment unit
- Fig. 4 shows the block diagram in a third variant with the transducer and the pretreatment unit and
- Fig. 5 shows the block diagram in a fourth variant with the sensor, the pretreatment unit and an induction heater.
- the metal strip 1 runs from a coil 2 into the pickling section 3.
- coil information 4 is input by an information sensor 4a and an information sensor 4b into a superstructure computing model 6 and / or into a control computing model 8 and processed according to the program. Further measured values 7 can be taken into account in the construction computing model 6.
- the pickling process is regulated on the basis of parameters of the coil 2 and / or the metal strip 1 that have been determined and / or measured with actuators before the metal strip 1 enters the pickling part 3 within the machine 5.
- a scale determination 10 On the basis of a first variant according to FIG. 2, in addition to the presetting of the pickling parameters, additionally measured values about the deposits or the scale are processed in a scale determination 10 with a measurement sensor M in the control computing model 8.
- the pickling process is preset in each case (FIGS. 1 to 5) on the basis of the built-up computing model 6 with measured values of the coil 2 and is regulated on the basis of the regulating computing model 8, which takes into account at least measured values for scale, bath temperature, pickling medium temperature and / or acid concentration.
- the additionally measured values for scale deposits in front of the pickling part 3 are used to regulate or readjust the actuators in the machine 5.
- a pretreatment unit H which influences the pickling time.
- the slow and fast actuators of the pickling part 3 are readjusted in the comparison of measured or calculated values from the control computing model 8, in particular taking into account the changed pickling times.
- a third variant additional measured values for scale deposits or deposits are recorded in parallel by the measurement sensor M of the scale detector 10 in the direction of movement 9 in front of the pickling part 3 and for the adjustment of the members of the pickling part 3 and / or used in the comparison of measured or calculated values.
- the pickling times are regulated on the basis of strip input information from coil 2 and the machine setting.
- the measured values recorded on the deposits or the scale are used to regulate a pretreatment unit H upstream of the pickling part 3.
- the pre-treatment unit H and the actuators of the pickling part 3 are readjusted in comparison with the measured or calculated values.
- an induction heater W is switched on between the pickling part 3 and the pretreatment unit H in addition to the scale detection 10 and the pretreatment unit H.
- the pickling time is defined as the contact time between the surface to be cleaned and the pickling medium, which is necessary to reliably remove the dirt from the metal strip 1.
- the pretreatment unit H can also accommodate the preheating unit in the form of the induction heater W.
- the pretreatment unit H basically has a mechanical, abrasive, hydromechanical, laser-optical or vibration-technical descaler.
- An inductive preheating of the metal strip 1 by the induction heater W is installed in front of the pickling part 3 and serves to quickly regulate the metal strip and the pickling medium temperature.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10007080 | 2000-02-16 | ||
| DE10007080 | 2000-02-16 | ||
| DE10062869 | 2000-12-16 | ||
| DE10062869A DE10062869A1 (de) | 2000-02-16 | 2000-12-16 | Verfahren und Einrichtung zum Beizen von gewalztem Metall-, insbesondere von Stahlband |
| PCT/EP2001/001683 WO2001061073A2 (de) | 2000-02-16 | 2001-02-15 | Verfahren und einrichtung zum beizen von gewalztem metall-, insbesondere von stahlband |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1257687A2 true EP1257687A2 (de) | 2002-11-20 |
Family
ID=26004374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01919285A Withdrawn EP1257687A2 (de) | 2000-02-16 | 2001-02-15 | Verfahren und einrichtung zum beizen von gewalztem metall-, insbesondere von stahlband |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20030015259A1 (pt) |
| EP (1) | EP1257687A2 (pt) |
| JP (1) | JP2003528978A (pt) |
| CN (1) | CN1401015A (pt) |
| AU (2) | AU4643601A (pt) |
| BR (1) | BR0107950A (pt) |
| CA (1) | CA2399754A1 (pt) |
| CZ (1) | CZ20022770A3 (pt) |
| PL (1) | PL362146A1 (pt) |
| RU (1) | RU2002124590A (pt) |
| SK (1) | SK11852002A3 (pt) |
| WO (1) | WO2001061073A2 (pt) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10031978A1 (de) * | 2000-06-30 | 2002-01-10 | Sms Demag Ag | Verfahren und Vorrichtung zur automatischen Zundererkennung aus Oberflächen von metallischem Bandgut, insbesondere von warmgewalztem Stahlband und Edelstahlband |
| KR100899687B1 (ko) * | 2002-08-23 | 2009-05-28 | 주식회사 포스코 | 열연강판의 산세방법 |
| WO2010006895A1 (de) * | 2008-07-16 | 2010-01-21 | Siemens Aktiengesellschaft | Betriebsverfahren für eine ein metallband bearbeitende bearbeitungseinrichtung und anlage zum bearbeiten eines metallbandes |
| CN102220595A (zh) * | 2011-05-31 | 2011-10-19 | 马鞍山钢铁股份有限公司 | 热轧钢带酸洗的感应加热方法及其装置 |
| CN106238470A (zh) * | 2015-06-09 | 2016-12-21 | 宝山钢铁股份有限公司 | 考虑拉矫破鳞效果的酸洗时间预报方法 |
| ES2826411T3 (es) | 2015-07-22 | 2021-05-18 | Kolene Corp | Procedimiento de acondicionamiento de incrustaciones para aleaciones de acero al carbono avanzado de alta resistencia |
| CN105648460B (zh) * | 2016-03-14 | 2018-02-13 | 佛山市网冠金属制品有限公司 | 一种智能喷涂系统及方法 |
| CN106825080A (zh) * | 2017-01-11 | 2017-06-13 | 首钢京唐钢铁联合有限责任公司 | 一种去除汽车板用钢红锈缺陷的方法 |
| IT201700056336A1 (it) * | 2017-05-24 | 2018-11-24 | Danieli Off Mecc | Impianto di pulizia per prodotti metallici |
| DE102018117475A1 (de) * | 2018-07-19 | 2020-01-23 | Sms Group Gmbh | Beizanlage zur Oberflächenbehandlung von Bandstahl |
| WO2020216959A1 (de) * | 2019-04-25 | 2020-10-29 | Hydro Aluminium Rolled Products Gmbh | Oberflächenbehandlung von flachprodukten aus aluminiumlegierungen umfassend farbmessungen |
| CN115135805A (zh) * | 2020-02-18 | 2022-09-30 | 株式会社Posco | 工艺控制系统及其操作方法 |
| CN111519194B (zh) * | 2020-03-27 | 2022-02-11 | 佛山津西金兰冷轧板有限公司 | 一种冷轧板制造工艺 |
| CN115044917B (zh) * | 2022-06-21 | 2023-10-03 | 北京首钢冷轧薄板有限公司 | 热轧带钢酸洗速度确定方法及装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325746A (en) * | 1979-10-01 | 1982-04-20 | Olin Corporation | System for cleaning metal strip |
| KR900007072B1 (ko) * | 1985-03-15 | 1990-09-28 | 신닛뽄 세이데쓰 가부시끼가이샤 | 냉간압연 강스트립의 제조방법 및 장치 |
| US5175502A (en) * | 1990-09-14 | 1992-12-29 | Armco Steel Company, L.P. | Method and apparatus for determining acid concentration |
| JPH05202419A (ja) * | 1992-01-27 | 1993-08-10 | Kawasaki Steel Corp | けい素鋼熱延板の脱スケール方法 |
| FR2701410B1 (fr) * | 1993-02-12 | 1995-05-05 | Clecim Sa | Installation de décapage d'une bande métallique. |
| AT404030B (de) * | 1995-02-15 | 1998-07-27 | Andritz Patentverwaltung | Verfahren zur beize von materialien aus stahl, insbesondere edelstahl |
| KR100464580B1 (ko) * | 1997-03-03 | 2005-02-28 | 가부시끼가이샤 히다치 세이사꾸쇼 | 산세정플랜트의제어방법과그산세정플랜트 |
| DE19743022A1 (de) * | 1997-09-29 | 1999-04-01 | Siemens Ag | Verfahren und Einrichtung zum Beizen eines Metallbandes |
| US6450183B1 (en) * | 1999-12-22 | 2002-09-17 | Kolene Corporation | Composition, apparatus, and method of conditioning scale on a metal surface |
-
2001
- 2001-02-15 SK SK1185-2002A patent/SK11852002A3/sk unknown
- 2001-02-15 RU RU2002124590/02A patent/RU2002124590A/ru unknown
- 2001-02-15 CN CN01805176A patent/CN1401015A/zh active Pending
- 2001-02-15 EP EP01919285A patent/EP1257687A2/de not_active Withdrawn
- 2001-02-15 BR BR0107950-6A patent/BR0107950A/pt not_active Application Discontinuation
- 2001-02-15 AU AU4643601A patent/AU4643601A/xx active Pending
- 2001-02-15 WO PCT/EP2001/001683 patent/WO2001061073A2/de not_active Application Discontinuation
- 2001-02-15 CZ CZ20022770A patent/CZ20022770A3/cs unknown
- 2001-02-15 PL PL36214601A patent/PL362146A1/xx not_active Application Discontinuation
- 2001-02-15 JP JP2001559906A patent/JP2003528978A/ja not_active Withdrawn
- 2001-02-15 AU AU2001246436A patent/AU2001246436A2/en not_active Abandoned
- 2001-02-15 CA CA002399754A patent/CA2399754A1/en not_active Abandoned
- 2001-02-15 US US10/203,846 patent/US20030015259A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0161073A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2002124590A (ru) | 2004-03-20 |
| JP2003528978A (ja) | 2003-09-30 |
| CA2399754A1 (en) | 2001-08-23 |
| CZ20022770A3 (cs) | 2003-03-12 |
| PL362146A1 (en) | 2004-10-18 |
| WO2001061073A3 (de) | 2002-04-25 |
| BR0107950A (pt) | 2004-01-06 |
| CN1401015A (zh) | 2003-03-05 |
| WO2001061073A2 (de) | 2001-08-23 |
| US20030015259A1 (en) | 2003-01-23 |
| AU4643601A (en) | 2001-08-27 |
| AU2001246436A2 (en) | 2001-08-27 |
| SK11852002A3 (sk) | 2002-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2416900B1 (de) | Verfahren und vorrichtung zum aufbereiten von warmwalzgut | |
| EP1257687A2 (de) | Verfahren und einrichtung zum beizen von gewalztem metall-, insbesondere von stahlband | |
| EP1732716B1 (de) | Verfahren zum herstellen eines metalls | |
| AT501314B1 (de) | Verfahren und vorrichtung zum kontinuierlichen herstellen eines dünnen metallbandes | |
| EP3430175B1 (de) | Verfahren zum walzen und/oder zur wärmebehandlung eines metallischen bandes | |
| EP2456897B1 (de) | Verfahren zur steuerung und/oder regelung eines induktionsofens für eine walzanlage, steuer- und/oder regeleinrichtung für eine walzanlage und walzanlage zum herstellen von walzgut | |
| DE3036997A1 (de) | Verfahren zur steuerung und regelung der temperatur eines werkstueckes waehrend des walzens in einem warmbandwalzwerk | |
| EP2603337A1 (de) | Verfahren zum herstellen von walzgut mittels einer giesswalzverbundanlage, steuer- und/oder regeleinrichtung für eine giesswalzverbundanlage und giesswalzverbundanlage | |
| EP1412543A1 (de) | Verfahren zur kühlung von werkstücken insbesondere von profilwalzprodukten aus schienenstählen | |
| AT506823A1 (de) | Verfahren und stranggiessanlage zum herstellen von dicken brammen | |
| EP1167577B1 (de) | Verfahren und Vorrichtung zur automatischen Zundererkennung auf Oberflächen von metallischem Bandgut, insbesondere von warmgewalztem Stahlband und Edelstahlband | |
| EP3791971A1 (de) | Kaltwalzen eines walzguts in einer walzstrasse mit mehreren walzgerüsten | |
| EP2790846B1 (de) | Verfahren zur bearbeitung von walzgut in einem warmwalzwerk | |
| EP3097218B1 (de) | Verfahren und anlage zum schmelztauchbeschichten von warmgewalztem stahlband | |
| EP2428288A1 (de) | Verfahren zum Herstellen von Stahlbändern durch Endloswalzen oder Semi-Endloswalzen | |
| DE3301631C2 (pt) | ||
| DE69913538T2 (de) | Verfahren und Vorrichtung zur Planheitsregelung | |
| DE10324679A1 (de) | Steuerrechner und rechnergestützes Ermittlungsverfahren für eine Profil- und Planheitssteuerung für eine Walzstraße | |
| EP0013539B1 (de) | Verfahren zur Geschwindigkeitssteuerung einer kontinuierlich arbeitenden Giessvorrichtung | |
| EP0732979B1 (de) | Giess-walzanlage für stahlbänder und regelsystem dafür | |
| DE10062869A1 (de) | Verfahren und Einrichtung zum Beizen von gewalztem Metall-, insbesondere von Stahlband | |
| EP3642372B1 (de) | Verfahren zum betreiben eines glühofens | |
| WO2014063671A1 (de) | Verfahren zur thermomechanischen behandlung von warmgewalzten profilen | |
| EP1112129A1 (de) | Kombiniertes regelungssystem zur erzeugung bestimmter produkteigenschaften beim walzen von stahlqualitäten im austenitischen, gemischt austenitisch-ferritischen und ferritischen bereich | |
| DE102022203248A1 (de) | Verfahren zum Herstellen eines Metallproduktes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20020611 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BRISBERGER, ROLF Inventor name: BLOCK, BODO Inventor name: SEIDEL, JUERGEN Inventor name: BUENTEN, DR. ING. ROLF |
|
| R17P | Request for examination filed (corrected) |
Effective date: 20020611 |
|
| 17Q | First examination report despatched |
Effective date: 20030226 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20031119 |