EP0531755B1 - Method for producing hot wide strip - Google Patents
Method for producing hot wide strip Download PDFInfo
- Publication number
- EP0531755B1 EP0531755B1 EP92114047A EP92114047A EP0531755B1 EP 0531755 B1 EP0531755 B1 EP 0531755B1 EP 92114047 A EP92114047 A EP 92114047A EP 92114047 A EP92114047 A EP 92114047A EP 0531755 B1 EP0531755 B1 EP 0531755B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stand
- train
- wide strip
- strip
- 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.)
- Revoked
Links
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000006698 induction Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
Images
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
- B21B45/004—Heating the product
-
- 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
- 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
- B21B45/04—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 de-scaling, e.g. by brushing
- B21B45/08—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 de-scaling, e.g. by brushing hydraulically
Definitions
- the invention relates to a method for producing hot wide strip in a rolling mill consisting of a single or multi-stand roughing mill and a multi-stand finishing mill, which are preceded by a high pressure descaling and a cropping shear.
- a method according to the preamble of claim 1 is known from EP-A-320846.
- Conventional-type hot strip mills consist of a roughing train and a finishing train.
- the roughing mill the roughing slab of 200 to 300 mm thickness is rolled out in several passes to an intermediate thickness of 25 to 60 mm.
- the roughing mill generally consists of several rolling stands. At least one reversing scaffold is required.
- the belt After the last stitch in the roughing train, the belt is led over the roller table to the finishing train. It goes through the cropping shear and high pressure descaling.
- the temperature is approximately the same over the entire length of the ribbon.
- the rolling temperature in the first stand drops steadily due to the radiation and convection to the environment.
- coil weights For example, of 20 kg / mm coil width, the temperature drop at the end of the strip is already approx. 150 ° C.
- the process is disadvantageous in several ways. Due to the increased forming speeds and the still existing temperature drop in the front stands, there is a noticeable increase in the rolling forces and the rolling moments over the strip length. The resulting changes in the mill stretch and in the bending of the roller sets have to be eliminated by complex control and regulation mechanisms. The amount of heat to be dissipated in the cooling section increases steadily with increasing speed. Depending on the speed, additional cooling zones must be activated, which means that irregularities in the reel temperature reached are unavoidable. Ultimately, uniform cooling of the strip over the length of the strip at the same cooling speeds becomes impossible.
- the object of the present invention is to change a method for the production of hot wide strip by suitable measures so that the rolling speed from the beginning of the strip to the end of the strip can be kept constant without changing the rolling temperatures in the individual stands.
- a roller hearth furnace 5 is arranged between the last stand of the roughing mill 1 and the cropping shear 4, which adjusts the temperature of the belt 7 coming from the roughing mill 1 to a uniform value over the entire belt length and keeps it constant.
- the belt 7 leaves the roller hearth furnace 5 at this temperature at a speed which corresponds to the tapping speed in the first stand of the finishing train 2.
- the speed of the finishing train 2 is not changed according to the invention. Since the throughput time for the distance from the end of the roller hearth furnace 5 to the roll gap of the first stand at the same speed is the same for all late arriving parts of the strip 7, the roll temperature in the first stand and in all other roll stands remains constant. Ultimately, by choosing this constant rolling speed for the entire strip length, depending on the furnace temperature and strip thickness, any desired final rolling temperature can be set.
- Skidmarks are cold spots in the support strip at regular intervals due to the contact of the pre-slab with the water-cooled support rails in the slab furnace.
- the skid marks are largely eliminated as they pass through the heated roller hearth furnace 5, so that there is a significant reduction in the known disturbances in the rolling force and thus in the thickness of the strip to be rolled.
- Another advantage is the reduction in the drive power required for finishing train 2, since the power required for acceleration is eliminated.
- the construction of the cooling section 8 is considerably simplified. The cooling at constant speed enables the driving of predetermined temperature curves to achieve certain technological properties, which can be maintained for each strip point over the entire strip length. This opens up new possibilities for optimizing thermomechanical effects.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Preparation Of Fruits And Vegetables (AREA)
- Noodles (AREA)
- Glass Compositions (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Erzeugung von Warmbreitband in einer Walzstraße bestehend aus einer ein- oder mehrgerüstigen Vorstraße und einer mehrgerüstigen Fertigstraße, der eine Hochdruckentzunderung und eine Schopfschere vorgeordnet sind. Ein Verfahren nach dem Oberbegriff des Anspruchs 1 ist aus der EP-A-320846 bekannt.The invention relates to a method for producing hot wide strip in a rolling mill consisting of a single or multi-stand roughing mill and a multi-stand finishing mill, which are preceded by a high pressure descaling and a cropping shear. A method according to the preamble of claim 1 is known from EP-A-320846.
Warmbreitbandstraßen konventioneller Bauart bestehen aus einer Vorstraße und einer Fertigstraße. In der Vorstraße wird die Vorbramme von 200 bis 300 mm Dicke in mehreren Stichen auf eine Zwischendicke von 25 bis 60 mm ausgewalzt. Die Vorstraße besteht im allgemeinen aus mehreren Walzgerüsten. Mindestens ist ein Reversiergerüst erforderlich.Conventional-type hot strip mills consist of a roughing train and a finishing train. In the roughing mill, the roughing slab of 200 to 300 mm thickness is rolled out in several passes to an intermediate thickness of 25 to 60 mm. The roughing mill generally consists of several rolling stands. At least one reversing scaffold is required.
Nach dem letzten Stich in der Vorstraße wird das Band über den Rollgang zur Fertigstraße geführt. Es durchläuft hierbei die Schopfschere und die Hochdruckentzunderung.After the last stitch in the roughing train, the belt is led over the roller table to the finishing train. It goes through the cropping shear and high pressure descaling.
Zu dem Zeitpunkt, zu dem sich der Bandkopf in der Schopfschere befindet, besteht über die gesamte Vorbandlänge eine in etwa gleiche Temperatur. Nach dem Anstich im ersten Gerüst fällt jedoch die Walztemperatur im ersten Gerüst infolge der Strahlung und Konvektion an die Umgebung stetig ab. Bei üblichen Coilgewichten von z.B. 20 kg/mm Coilbreite beträgt der Temperaturabfall am Bandende bereits ca. 150°C.At the time the ribbon head is in the cropping shear, the temperature is approximately the same over the entire length of the ribbon. After tapping in the first stand, however, the rolling temperature in the first stand drops steadily due to the radiation and convection to the environment. With usual coil weights For example, of 20 kg / mm coil width, the temperature drop at the end of the strip is already approx. 150 ° C.
Würde die Fertigstraße mit konstanter Geschwindigkeit betrieben, so würde sich die Erscheinung mit jeweils tieferliegendem Temperaturniveau auch in den weiteren Gerüsten der Fertigstraße zeigen. Letztlich würde auch die für die technologischen Eigenschaften des Bandes entscheidende Endwalztemperatur am letzten Gerüst vom Bandanfang zum Bandende deutlich abfallen.If the finishing train were operated at a constant speed, the appearance of the lower temperature level would also be evident in the other stands of the finishing train. Ultimately, the final rolling temperature on the last stand, which is decisive for the technological properties of the strip, would drop significantly from the beginning of the strip to the end of the strip.
Um dies zu vermeiden, wird die Geschwindigkeit der Fertigstraße während der Walzzeit vom Bandanfang zum Bandende stetig erhöht. Die hierdurch an allen Gerüsten stetig zunehmende Umformleistung bewirkt eine Wiedererwärmung des Bandes, die bei richtiger Wahl der Beschleunigungsgrade eine konstante Walztemperatur im letzten Gerüst zur Folge hat.To avoid this, the speed of the finishing train is steadily increased from the beginning of the strip to the end of the strip during the rolling time. The consequently increasing forming capacity on all stands causes the strip to be reheated, which, if the degrees of acceleration are selected correctly, results in a constant rolling temperature in the last stand.
Das Verfahren ist in mehrfacher Hinsicht nachteilig. Durch die erhöhten Umformgeschwindigkeiten sowie durch den immer noch vorhandenen Temperaturabfall in den vorderen Gerüsten ergibt sich über die Bandlänge ein spürbarer Anstieg der Walzkräfte und der Walzmomente. Die sich hieraus ergebenden Veränderungen in der Gerüstdehnung und in der Biegung der Walzensätze müssen durch aufwendige Kontroll- und Regelmechanismen beseitigt werden. Die in der Kühlstrecke abzuführende Wärmemenge nimmt mit steigender Geschwindigkeit stetig zu. Abhängig von der Geschwindigkeit müssen weitere Kühlzonen zugeschaltet werden, wodurch Ungleichförmigkeiten in der erreichten Haspeltemperatur unvermeidlich sind. Letztlich wird eine über die Bandlänge gleichförmige Kühlung des Bandes mit gleichen Abkühlgeschwindigkeiten unmöglich.The process is disadvantageous in several ways. Due to the increased forming speeds and the still existing temperature drop in the front stands, there is a noticeable increase in the rolling forces and the rolling moments over the strip length. The resulting changes in the mill stretch and in the bending of the roller sets have to be eliminated by complex control and regulation mechanisms. The amount of heat to be dissipated in the cooling section increases steadily with increasing speed. Depending on the speed, additional cooling zones must be activated, which means that irregularities in the reel temperature reached are unavoidable. Ultimately, uniform cooling of the strip over the length of the strip at the same cooling speeds becomes impossible.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zur Erzeugung von Warmbreitband durch geeignete Maßnahmen so zu verändern, daß die Walzgeschwindigkeit vom Bandanfang zum Bandende konstant gehalten werden kann, ohne daß sich die Walztemperaturen in den einzelnen Gerüsten verändern.The object of the present invention is to change a method for the production of hot wide strip by suitable measures so that the rolling speed from the beginning of the strip to the end of the strip can be kept constant without changing the rolling temperatures in the individual stands.
Diese Aufgabe wird durch die Kombination der Merkmale nach Anspruch 1 gelöst.This object is achieved by the combination of the features according to claim 1.
Wie in der Zeichnung dargestellt, ist zwischen dem letzten Gerüst der Vorstraße 1 und der Schopfschere 4 einen Rollenherdofen 5 angeordnet, der die Temperatur des von der Vorstraße 1 kommenden Bandes 7 über die gesamte Bandlänge auf einen einheitlichen Wert abgleicht und konstant hält. Das Band 7 verläßt mit dieser Temperatur den Rollenherdofen 5 mit einer Geschwindigkeit, die der Anstichgeschwindigkeit im ersten Gerüst der Fertigstraße 2 entspricht. Die Geschwindigkeit der Fertigstraße 2 wird erfindungsgemäß nicht verändert. Da die Durchlaufzeit für die Strecke vom Ende des Rollenherdofens 5 bis zum Walzspalt des ersten Gerüstes bei gleicher Geschwindigkeit für alle spät einlaufenden Teile des Bandes 7 gleich ist, bleibt auch die Walztemperatur im ersten Gerüst und in allen anderen Walzgerüsten konstant. Letztlich kann durch Wahl dieser für die gesamte Bandlänge konstanten Walzgeschwindigkeit in Abhängigkeit von der Ofentemperatur und der Banddicke jede gewünschte Endwalztemperatur eingestellt werden.As shown in the drawing, a
Bei Betrieb der Fertigstraße 2 in der vorgeschlagenen Art ergeben sich konstante Walzkräfte und Walzmomente über die gesamte Bandlänge. Die zur Erzielung bestimmter Haspeltemperaturen zu aktivierenden Teile der vor dem Haspel 9 angeordneten Kühlstrecke 8 bleiben ebenfalls konstant. Gleiche Abkühlgeschwindigkeiten über die gesamte Bandlänge sind gesichert. Die Haspeltemperatur kann innerhalb geringer Toleranzen konstant gehalten werden.When the finishing train 2 is operated in the manner proposed, there are constant rolling forces and rolling moments over the entire length of the strip. The parts of the
Ein weiterer Vorteil ist die weitgehende Auflösung der sogenannten Skidmarks im Vorband. Skidmarks sind in regelmäßigen Abständen im Vorband vorhandene kältere Stellen infolge des Kontaktes der Vorbramme mit den wassergekühlten Auflageschienen im Brammenofen. Die Skidmarks werden beim Durchlauf durch den beheizten Rollenherdofen 5 weitgehend eliminiert, so daß eine deutliche Minderung der bekannten Störungen in der Walzkraft und damit in der Dicke des zu walzenden Bandes eintritt.Another advantage is the extensive dissolution of the so-called skidmarks in the opening act. Skidmarks are cold spots in the support strip at regular intervals due to the contact of the pre-slab with the water-cooled support rails in the slab furnace. The skid marks are largely eliminated as they pass through the heated
Ein weiterer Vorteil ist die Minderung der erforderlichen Antriebsleistung für die Fertigstraße 2, da die zur Beschleunigung erforderliche Leistung entfällt. Die Konstruktion der Kühlstrecke 8 wird wesentlich vereinfacht. Die Kühlung mit konstanter Geschwindigkeit ermöglicht das Fahren vorgegebener Temperaturkurven zur Erzielung bestimmter technologischer Eigenschaften, die für jeden Bandpunkt über die gesamte Bandlänge eingehalten werden können. Hierdurch eröffnen sich neue Möglichkeiten zur Optimierung thermomechanischer Effekte.Another advantage is the reduction in the drive power required for finishing train 2, since the power required for acceleration is eliminated. The construction of the
Claims (3)
- Method of producing hot wide strip in a rolling train, consisting of a single-stand or multi-stand roughing train (1) with a multi-stand finishing train (2), upstream of which are arranged a high-pressure descaler (3) and a cropping cutter (4), wherein a roller furnace (5) is arranged between the roughing train and the cropping cutter, characterised thereby that the hot wide strip coming into the roller furnace (5) from the last stand of the roughing train (1) is adjusted to a temperature which is constant over the entire strip length and is kept at that adjusted temperature, that the hot wide strip with that uniform and constant temperature leaves the roller furnace (5) at a speed which corresponds to the speed of the first pass in the first stand of the finishing train (2) and that for adherence to a constant end rolling temperature of the hot wide strip the finishing train (2) is operated at a constant rolling speed and that the hot wide strip coming into a downstream cooling path (8) from the last stand of the finishing train (2) is cooled to a constant reeling-up temperature at cooling speeds which are uniform within the cooling path.
- Method according to claim 1, characterised thereby that the roller furnace (5) is heated by gas or by oil.
- Method according to claim 1 or 2, characterised thereby, that the hot wide strip coming into an induction heating path (6) from the last stand (1) of the roughing train is heated up before it is led into the roller furnace (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4129749A DE4129749A1 (en) | 1991-09-09 | 1991-09-09 | ROLLING MILL FOR THE PRODUCTION OF HOT BROADBAND |
DE4129749 | 1991-09-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0531755A1 EP0531755A1 (en) | 1993-03-17 |
EP0531755B1 true EP0531755B1 (en) | 1995-12-13 |
Family
ID=6440073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92114047A Revoked EP0531755B1 (en) | 1991-09-09 | 1992-08-18 | Method for producing hot wide strip |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0531755B1 (en) |
JP (1) | JP3262379B2 (en) |
AT (1) | ATE131422T1 (en) |
DE (2) | DE4129749A1 (en) |
ES (1) | ES2081004T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5927118A (en) * | 1996-05-28 | 1999-07-27 | Nkk Corporation | Method for making hot-rolled steel sheet and apparatus therefor |
ATE235972T1 (en) * | 1997-11-21 | 2003-04-15 | Sms Demag Ag | RETROFITTING HOT ROLLING TRAINS FOR ROLLING THIN STRIPS |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2559222A1 (en) * | 1975-12-30 | 1977-07-14 | Nippon Steel Corp | METHOD OF HOT ROLLING STRIP AND HOT STRIP ROLLING MILL |
US4444038A (en) * | 1981-09-29 | 1984-04-24 | Tippins Machinery Company, Inc. | Method of modernizing a hot strip mill |
AU2669088A (en) * | 1987-12-18 | 1989-06-22 | Hitachi Limited | Apparatus and method for hot-rolling slab into sheets |
-
1991
- 1991-09-09 DE DE4129749A patent/DE4129749A1/en not_active Withdrawn
-
1992
- 1992-08-18 EP EP92114047A patent/EP0531755B1/en not_active Revoked
- 1992-08-18 ES ES92114047T patent/ES2081004T3/en not_active Expired - Lifetime
- 1992-08-18 AT AT92114047T patent/ATE131422T1/en not_active IP Right Cessation
- 1992-08-18 DE DE59204667T patent/DE59204667D1/en not_active Revoked
- 1992-09-01 JP JP23386392A patent/JP3262379B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3262379B2 (en) | 2002-03-04 |
DE59204667D1 (en) | 1996-01-25 |
ES2081004T3 (en) | 1996-02-16 |
ATE131422T1 (en) | 1995-12-15 |
DE4129749A1 (en) | 1993-03-11 |
EP0531755A1 (en) | 1993-03-17 |
JPH06315710A (en) | 1994-11-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0771596B1 (en) | Installation for rolling hot strip by continuous or discontinuous rolling | |
EP0889762B1 (en) | Method for producing hot-rolled steel strip | |
EP0415987B2 (en) | Process for continuous production of steel strip or steel sheet from flat products made by the circular-arc type continuous casting process | |
EP0804300B1 (en) | Process and device for producing a steel strip with the properties of a cold-rolled product | |
AT504782B1 (en) | METHOD FOR PRODUCING A HOT-ROLLED STEEL STRIP AND COMBINED CASTING AND ROLLING MACHINE TO PERFORM THE METHOD | |
DE69814513T2 (en) | Rolling process and mill for thin flat products | |
EP1047510B1 (en) | Method and installation for the continuous production of hot-rolled, thin flat products | |
EP0761326B1 (en) | Installation for producing hot rolled thin strip | |
WO2002011915A1 (en) | Production method and installation for producing thin flat products | |
DE3027927A1 (en) | METHOD FOR PRODUCING ROLLING RODS AND WIRE | |
DE3837642A1 (en) | METHOD AND DEVICE FOR PRODUCING HOT-ROLLED STEEL TAPES | |
EP1456421B1 (en) | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill | |
EP3341142B1 (en) | Method for operating an installation based on the csp concept | |
DE19520832A1 (en) | Method and device for producing steel strip with cold rolling properties | |
DE10357363B4 (en) | Method and plant for casting and immediately subsequent rolling of casting strands of metal, in particular of steel materials, preferably thin strands | |
EP0531755B1 (en) | Method for producing hot wide strip | |
DE3039101A1 (en) | Continuous rolling mill train for small stainless steel rods etc. - where finishing zone contains row of double mills which are each followed by cooling appts. | |
EP3713685B1 (en) | Cooling bar and cooling process with variable cooling rate for steel sheets | |
EP0919296B1 (en) | Adaption of hot rolling lines for rolling thin strips | |
EP0761325A1 (en) | Method and installation for production of ferritic hot-rolled strip | |
WO2003068425A1 (en) | Method for the continuous rolling of a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab, and corresponding continuous casting machine | |
DE19538341A1 (en) | Hot strip production line for rolling thin rolled strip | |
EP0198153B1 (en) | Proces for heating billets and ingots | |
US5842367A (en) | Rolling mill train system for the manufacture of hot rolled wide strip | |
DE3816469A1 (en) | Multi-strand continuous casting installation with a downstream continuous rolling mill |
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: 19920827 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE ES FR GB IT NL SE |
|
17Q | First examination report despatched |
Effective date: 19931129 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE ES FR GB IT NL SE |
|
REF | Corresponds to: |
Ref document number: 131422 Country of ref document: AT Date of ref document: 19951215 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 59204667 Country of ref document: DE Date of ref document: 19960125 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2081004 Country of ref document: ES Kind code of ref document: T3 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960217 |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
26 | Opposition filed |
Opponent name: VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH Effective date: 19960913 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
RDAH | Patent revoked |
Free format text: ORIGINAL CODE: EPIDOS REVO |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
APAE | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOS REFNO |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: SMS DEMAG AG |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20000725 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20000726 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20000728 Year of fee payment: 9 |
|
NLT2 | Nl: modifications (of names), taken from the european patent patent bulletin |
Owner name: SMS DEMAG AG |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20000825 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010713 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20010725 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010801 Year of fee payment: 10 Ref country code: DE Payment date: 20010801 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010819 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010831 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
BERE | Be: lapsed |
Owner name: SCHLOEMANN-SIEMAG A.G. SMS Effective date: 20010831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020301 |
|
EUG | Se: european patent has lapsed |
Ref document number: 92114047.1 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20020301 |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
27W | Patent revoked |
Effective date: 20020909 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 20020909 |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |