EP0769333B1 - Procédé d'élaboration, sur une ligne, en continu, d'une bande de tole laminée d'acier inoxydable présentant un état de surface améliorée - Google Patents
Procédé d'élaboration, sur une ligne, en continu, d'une bande de tole laminée d'acier inoxydable présentant un état de surface améliorée Download PDFInfo
- Publication number
- EP0769333B1 EP0769333B1 EP96402086A EP96402086A EP0769333B1 EP 0769333 B1 EP0769333 B1 EP 0769333B1 EP 96402086 A EP96402086 A EP 96402086A EP 96402086 A EP96402086 A EP 96402086A EP 0769333 B1 EP0769333 B1 EP 0769333B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- pickling
- rolling
- less
- cold
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 16
- 239000010935 stainless steel Substances 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 title description 58
- 239000002184 metal Substances 0.000 title description 58
- 238000005554 pickling Methods 0.000 claims abstract description 61
- 238000005097 cold rolling Methods 0.000 claims abstract description 59
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 22
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 5
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 3
- 239000003792 electrolyte Substances 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 32
- 230000009467 reduction Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 238000010924 continuous production Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000005422 blasting Methods 0.000 description 8
- 230000001680 brushing effect Effects 0.000 description 8
- 238000011282 treatment Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229940105847 calamine Drugs 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 229910052864 hemimorphite Inorganic materials 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 235000014692 zinc oxide Nutrition 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- CPYIZQLXMGRKSW-UHFFFAOYSA-N zinc;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Zn+2] CPYIZQLXMGRKSW-UHFFFAOYSA-N 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000005480 shot peening Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010731 rolling oil Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010690 paraffinic oil Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C23G3/028—Associated apparatus, e.g. for pretreating or after-treating for thermal or mechanical pretreatment
-
- 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
- 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
- B21B45/06—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 of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
Definitions
- the invention relates to a process for the production, on a continuous line, of a strip of laminated stainless steel sheet having an improved surface finish.
- JP 5212410 deals with cold rolling equipment for steel stainless steel which is organized in a series of successive equipment including, a annealing device, a descaling device and a rolling mill, the strip then being wound before another rolling treatment.
- the annealing is carried out in head of line, before descaling, descaling not being specified as being a chemical pickling?
- Document JP 56 127777 describes a device applying tension on a strip of steel combined with a blasting by device spray placed between a loop and a continuous cold rolling mill. Spray pickling is carried out on the steel strip which remains energized so that the strip is simultaneously subjected to pickling mechanical and chemical.
- a process for producing a strip of stainless steel sheet comprising annealing operations of the strip of hot-rolled sheet metal, and pickling of said strip tape, these operations being carried out on a first line.
- the strip of pickled sheet is subjected to a cold rolling operation on a rolling mill reversible, the rolling operation being carried out in five passes, and in general, in seven or more passes, at a reduction rate that can vary from 50 to 80%.
- the band of cold rolled sheet is then moved on a line to undergo a continuous annealing pickling.
- the strip of pickled sheet is subjected to a rolling operation cold "skin pass" type which can be followed by a planing and shearing operation.
- the invention aims to develop, continuously, a strip of sheet steel stainless steel with a characteristic surface roughness and uniformity of appearance, sheet metal strip obtained on a single industrial line, the process development ensuring a significant reduction in the number of passes in the operation cold rolling, and making it possible to economically produce the assembly operations necessary to obtain a sheet metal strip having a defined surface quality.
- FIG. 1 presents a diagram showing the principle, in a cold rolling operation, the evolution of the surface condition of a strip sheet metal, from the roughness point of view, depending on the number of passes and the reduction rate of cold rolling.
- Figure 2 shows a curve of rolling forces as a function the rate of reduction of cold rolling for two qualities of lamination used.
- Figure 3 is a diagram of the rolling line according to the invention.
- Figure 4 is another diagram of the rolling line according to the invention.
- the invention relates to a method for developing, online, using continuous, of a strip of rolled stainless steel sheet having a improved surface condition 2B characterized by a roughness Ra of less than 0.25 micrometer, or even less than 0.15 micrometer in the long direction and in the cross direction, the process does not generate a color change apparent, halo or trace of oxide.
- a strip of sheet metal produced hot is subjected, in the first place, to a leveling under tension.
- the leveling under traction has the function of provoking, by the traction which generates a residual elongation of 1 to 5% of the sheet metal strip, flaking of the oxide layer of said strip.
- the leveling associated with the traction ensures, at this stage of the process, an improvement in the flatness of the strip of sheet metal, improvement which influences the operations which follow such as the shot blasting.
- the sheet metal strip is subjected to pickling, which ensures an improved surface finish of the sheet metal strip, compared to a conventional method of production of a sheet metal strip, as described above, in the prior art.
- curves A and B show a diagram of principle materializing, in a cold rolling operation, the evolution surface condition of a strip of sheet metal, from the roughness point of view, in depending on the number of passes and the reduction rate.
- the evolution of the surface condition in the conventional process is referenced by curve A, that of the invention is referenced by curve B.
- curves A and B in Figure 1 the variation the roughness of a sheet metal strip decreases as a function of part, the reduction rate of the strip during cold rolling and other share of the number of passes in cold rolling.
- the number of passes is materialized on curves A and B of figure 1 by a contained figure in a circle.
- the conventional process in which the sheet metal strip has undergone, before cold rolling, annealing followed by shot blasting and pickling, allows to obtain a sheet metal strip having a roughness Rt of 25 to 40 micrometers and a Ra of 2.5 to 4 micrometers.
- the strip before cold rolling has a roughness Rt of 10 to 20 micrometers and a Ra of 1 to 2 micrometers.
- the tape is also completely free oxide.
- the sheet strip is subject to abrasion e.g. abrasive brushing, brushing being carried out before, after, or during the primary pickling operation.
- abrasion e.g. abrasive brushing, brushing being carried out before, after, or during the primary pickling operation.
- the sheet metal strip can be subjected to a shot peening operation which facilitates detachment of the scale without excessively disturbing the surface of the sheet.
- the strip of sheet metal produced hot and not annealed has high mechanical characteristics which, combined with conditions soft peening, allow blasting without disturbance harmful to the surface of the sheet metal strip.
- the leveling operations under traction and of associated stripping are intended to ensure the surface of the strip sheet metal a state of roughness such as to reduce so consequent the number of passes in the cold rolling operation. This is shown by curve B in FIG. 1.
- the reduction in the number of passes in cold rolling imposes rolling conditions which ensures a reduction in the roughness of the sheet metal strip.
- the total reduction in sheet metal thickness is optimized so as not to exceed a rolling force of 800 tonnes per meter width exerted on the rolls of the rolling mills. Beyond this limit, there formation of a thick and rough transfer layer on the working rolls, which prints the strip of laminated sheet to give it a high roughness corresponding to a Ra of around 1 micrometer.
- the diameter of the rolling mill rolls is less than 180 millimeters and preferably less than 150 millimeters to allow reductions high strip thickness with rolling forces less than 800 tonnes per meter width.
- Such cylinders provide an improvement in roughness during cold rolling.
- the cylinders of the last cage must be polished to have a very low roughness and preferably less than 0.1 micrometer.
- paraffinic laminating oils containing one or more friction reducing additives the additives being preferably one or more several esters whose total concentration in the oil is greater than or equal to 10%.
- the rolling oils used make it possible to achieve the above reduction rates in an even smaller number of passes, two passes for example, without increasing the rolling forces.
- the use of a paraffinic oil containing at least 10% of ester allows, with identical rolling effort, a reduction in thickness of the sheet metal strip of 35% compared to, the reduction of 25% obtained with a conventional oil containing only 1% ester.
- Figure 2 shows two curves a and b corresponding to the forces allowed for rolling according to different reduction rates of rolling for two ester concentrations of a rolling oil.
- said strip is subjected to a brushing which can be abrasive, brushing being carried out before, after or during the chemical pickling.
- the strip of hot-rolled sheet metal planed under traction can be, before stripping and or brushing, subjected to a shot peening, making it easier to detach the scale.
- the sheet metal strip produced by the process according to the invention has a surface quality corresponding to a roughness Ra of less than 0.25 micrometer, capable of reaching a roughness Ra of less than 0.15 micrometer.
- the invention also relates, as shown in FIG. 3, an industrial line 1 for the implementation of the process, line 1 industrial which includes in an associated way, a leveler 2 under traction, and a primary pickling station 3, ensuring a stop of the online pickling operation simultaneously with the stopping of the cold rolling.
- the treatment of the working rolls of the rolling mill must confer to said cylinders sufficient wear resistance to maintain the quality of their surface during the rolling of at least one wound strip 30 tonnes.
- the cylinders used are made of high-speed high-speed steel. vanadium or sintered, and must be changed practically to each roll laminated. It follows a necessity to stop the line of regularly, each time the working cylinders are changed.
- the use of a pickling bath upstream of the cold rolling device poses the problem of frequent shutdowns of the rolling mill and control of the passage of the strip in the pickling bath. Indeed, the different sheet metal stops on a single line requires management of tape reserve by means of tape accumulators placed between the different stations and devices.
- the primary pickling station 3 is followed by a cold rolling device 4.
- the pickling station 3 comprises a tank of an acid bath provided with a device for removing the sheet metal strip immersion.
- the station pickling 3 is of the spray type.
- the pickling station by spraying authorizes an instant pickling stop by stopping sprinkling simultaneously with the shutdown of the rolling mill.
- the pickling station 3 primary may be an electrolytic pickling station comprising a tank for example of neutral salt, the station being stopped by power supply to the electrolytic cell stopped.
- the pickling station 3 provided with a pickling stop means, reduces or removes the tape accumulator 13 generally placed between the pickling station 3 and the cold rolling 4.
- Line 1 includes, after the cold rolling device 4 no reversible comprising at most three cages 5, an annealing device 6 of the sheet metal work hardened, a final pickling station 7, and a device for "skin pass" cold rolling 8.
- Line 1 may also include, placed after the leveler under traction 2, as shown in FIG. 4, a station shot blasting 9 and or a brushing means 10 which can be abrasive, helping to refine the quality of the surface of the front sheet metal strip cold rolling to obtain an improved surface finish of the strip sheet after said cold rolling reduced in number of passes.
- a station shot blasting 9 and or a brushing means 10 which can be abrasive, helping to refine the quality of the surface of the front sheet metal strip cold rolling to obtain an improved surface finish of the strip sheet after said cold rolling reduced in number of passes.
- the line may further include, after the rolling device to cold "skin pass” type, a leveler 11 associated with a shears 12.
- a second shears 12 can be placed after the leveler under tension 2.
- a strip of steel sheet hot-rolled austenitic material with a thickness of 2 mm is subjected to a leveling under tension producing a residual elongation of 3.5%.
- the sheet metal strip is then pickled in two acid baths H 2 SO 4 . At this stage of the process, the sheet metal strip has a roughness of less than 1.5 micrometers.
- the sheet metal strip is then subjected to a cold rolling in three passes on a ZHi type cold rolling train.
- the sheet metal strip is cold rolled at a 50% reduction rate.
- the sheet metal strip is then annealed and pickled. It presents, after these short operations cold rolling, annealing and pickling, roughness Ra less than 0.25 micrometer.
- the sheet metal strip is subjected to an operation, in one pass, of cold rolling of the "skin pass" type producing an elongation 0.8%.
- the sheet metal strip then has a roughness Ra of less than 0.1 micrometer.
- a strip of steel sheet titanium stabilized ferritic, hot rolled and thick of 3 mm is subjected to a leveling under tension producing a residual elongation of 4%.
- the sheet metal strip is then pickled in an acid bath H 2 SO 4 and then in an acid bath HNO 3 .
- the sheet metal strip has a roughness Ra of less than 2 micrometers.
- the sheet metal strip is then subjected to cold rolling in two passes under a reduction rate of 50% on rolling mills of the ZHi type then annealed and pickled. It presents, after these short operations of cold rolling, annealing and pickling, a roughness Ra of less than 0.25 micrometer.
- the sheet metal strip is then subjected to an operation of cold rolling in one pass of the skin pass type producing a band extension of 0.8%.
- the sheet metal strip then has a roughness less than 0.15 micrometer.
- the strip of stainless steel sheet is pickled with an aqueous pickling solution consisting of hydrochloric acid, ferric and ferrous pickling ions in solution, and, in order to maintain a constant pickling power of the solution aqueous hydrochloric acid to maintain the concentration of Fe 3+ ions, by reoxidation of the Fe 2+ ions generated during pickling, the REDOX potential being maintained at a value between 0 and 800 mV, potential measured between a platinum electrode and an Ag / agCl reference electrode placed in the solution.
- an aqueous pickling solution consisting of hydrochloric acid, ferric and ferrous pickling ions in solution
- the effectiveness pickling may allow, depending on the quality of the sheet metal strip, the elimination of mechanical treatments of the leveling type under tension, shot blasting, brushing, significantly reducing the line industrial production of sheet steel strip.
- the reduction in the number of passes in cold rolling allows the establishment of a continuous line comprising a reduced cold rolling device generating a economy on investment, to obtain a quality sheet, and also, significant savings on line maintenance costs and staff.
- the continuous line thus generates a very significant processing time, so stocks of semi-finished products and the elimination of intermediate generating handling defects and loss of metal.
Description
- un planage sous traction ou bien un laminoir qui brise la couche de calamine et qui est suivi par un retrait de la calamine par brossage ou bien par grenaillage,
- un décapage en continu avec un laminage à froid ou bien un décapage suivi d'un rinçage sans laminage, la bande étant alors bobinée avant un laminage à froid effectué sur une seconde ligne.
- un planage sous traction produisant un allongement résiduel de 1 à 5%, pour fissurer la couche d'oxyde et planer la tôle,
- un décapage primaire assurant le retrait de la calamine, et qui assure un état de surface amélioré de la bande de tôle du point de vue rugosité Rt inférieur à 20 micromètres et un Ra inférieur à 2 micromètres,
- un laminage à froid en au plus trois passes de laminage,
- un recuit final,
- un décapage final,
- un laminage à froid de type "skin pass", la qualité de la surface de la tôle correspondant à une rugosité inférieure à 0,25 micromètres.
- la bande de tôle est, après le planage sous traction, soumise à un grenaillage pour décalaminage facilitant le décollement de la calamine sans perturber de manière excessive la surface de la tôle,
- pour une bande de tôle d'acier ferritique, le laminage à froid de la bande est effectué sous un taux de réduction inférieur ou égal à 60%,
- pour une bande de tôle d'acier austénitique, le laminage à froid de la bande est effectué sous un taux de réduction inférieur ou égal à 50%,
- la bande de tôle est soumise à un recuit final effectué sous atmosphère oxydante à une température comprise entre 800 et 1200°C,
- la bande de tôle, après laminage à froid et recuit final, est soumise à un laminage à froid de type "skin pass", le laminage à froid produisant un allongement de la bande compris entre 0,5 et 2%,
- une planeuse sous traction,
- une station de décapage primaire comportant un moyen d'arrêt du décapage instantané, simultanément à l'arrêt du laminoir,
- un dispositif de laminage à froid en continu, non réversible comportant au plus, trois cages de type multicylindres, les cylindres de travail ayant un diamètre inférieur à 180 mm et de préférence inférieur à 150 mm, la dernière cage présentant des cylindres de rugosité inférieur à 0,1 millimètres,
- un dispositif de recuit final,
- un dispositif de décapage final,
- un dispositif de laminage à froid de type "skin pass".
- la ligne comprend en outre une station de grenaillage,
- la station de décapage comprend un bac d'un bain acide muni d'un dispositif de retrait de la bande de tôle en immersion,
- la station de décapage est du type à aspersion,
- la station de décapage est électrolytique,
- la cuve de la station de décapage électrolytique contient un électrolyte choisi parmi, un sel neutre, de l'acide phosphorique,
Pour parvenir à des réductions d'épaisseur de la bande de tôle avec des taux de réduction inférieurs à 60%, il est préférable d'utiliser des huiles de laminage paraffiniques contenant un ou des additifs réducteurs de frottement, les additifs étant de préférence un ou plusieurs esters dont la concentration totale dans l'huile est supérieure ou égale à 10%. Les huiles de laminage utilisées, permettent de réaliser les taux de réduction ci dessus en un nombre de passes encore plus réduites, deux passes par exemple, sans augmentation des forces de laminage. Par exemple, l'utilisation d'une huile paraffinique contenant au moins 10% d'ester permet, à effort de laminage identique, une réduction en épaisseur de la bande de tôle de 35% comparativement à, la réduction de 25% obtenue avec une huile classique ne contenant que 1% d'ester.
Claims (12)
- Procédé d'élaboration sur une ligne, en continu, d'une bande de tôle laminée d'acier inoxydable présentant un état de surface amélioré caractérisé en ce que la tôle élaborée à chaud, non recuite, est soumise principalement à :un planage sous traction produisant un allongement résiduel de 1 à 5%, pour fissurer la couche d'oxyde et planer la tôle,un décapage primaire assurant le retrait de la calamine, et qui assure un état de surface améliorée de la bande de tôle du point de vue rugosité Rt inférieure à 20 micromètres et un Ra inférieur à 2 micromètres,un laminage à froid en au plus trois passes de laminage,un recuit final,un décapage final,un laminage à froid de type "skin pass", la qualité de la surface de la tôle correspondant à une rugosité Ra inférieure à 0,25 micromètres.
- Procédé selon la revendication 1 caractérisé en ce que la bande de tôle est, après le planage sous traction, soumise à un grenaillage pour décalaminage facilitant le décollement de la calamine sans perturber de manière excessive la surface de la tôle.
- Procédé selon les revendications 1 et 2 caractérisé en ce que pour une bande de tôle d'acier ferritique, le laminage à froid de la bande est effectué sous un taux de réduction inférieur ou égal à 60%.
- Procédé selon les revendications 1 à 3 caractérisé en ce que pour une bande de tôle d'acier austénitique, le laminage à froid de la bande est effectué sous un taux de réduction inférieur ou égal à 50%.
- Procédé selon les revendications 1 à 4 caractérisé en ce que la bande de tôle est soumise à un recuit final effectué sous atmosphère oxydante à une température comprise entre 800 et 1200°C.
- Procédé selon les revendications 1 à 5 caractérisé en ce que la bande de tôle, après laminage à froid et recuit final, est soumise à un laminage à froid de type "skin pass", le laminage à froid produisant un allongement de la bande compris entre 0,5 et 2%.
- Ligne industrielle d'élaboration d'une bande de tôle d'acier inoxydable pour la mise en oeuvre du procédé selon les revendications de 1 à 6 caractérisée en ce qu'elle comprend successivement :une planeuse sous traction,une station de décapage chimique primaire (3) comportant un moyen d'arrêt du décapage instantané, simultanément à l'arrêt du laminoir,un dispositif de laminage à froid en continu, non réversible, comportant au plus 3 cages (5), de type multi cylindres, les cylindres de travail ayant un diamètre inférieur à 180 mm et de préférence inférieur à 150 mm, la dernière cage présentant des cylindres de rugosité inférieure à 0,1 micromètres,un dispositif de recuit final,un dispositif de décapage final,un dispositif de laminage à froid de type "skin pass".
- Ligne selon la revendication 7 caractérisée en ce qu'elle comprend en outre une station de grenaillage (9).
- Ligne selon la revendication 7 caractérisée en ce que la station de décapage comprend un bac d'un bain acide muni d'un dispositif de retrait de la bande de tôle en immersion.
- Ligne selon la revendication 7 caractérisée en ce que la station de décapage est du type à aspersion.
- Ligne selon la revendication 7 caractérisée en ce que la station de décapage est électrolytique.
- Ligne selon la revendication 11 caractérisée en ce que la cuve de la station de décapage électrolytique contient un électrolyte choisi parmi, un sel neutre, de l'acide phosphorique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9512271 | 1995-10-19 | ||
FR9512271A FR2740061B1 (fr) | 1995-10-19 | 1995-10-19 | Procede d'elaboration, sur une ligne, en continu, d'une bande de tole laminee d'acier inoxydable presentant un etat de surface amelioree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0769333A1 EP0769333A1 (fr) | 1997-04-23 |
EP0769333B1 true EP0769333B1 (fr) | 2002-01-09 |
Family
ID=9483685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402086A Revoked EP0769333B1 (fr) | 1995-10-19 | 1996-10-01 | Procédé d'élaboration, sur une ligne, en continu, d'une bande de tole laminée d'acier inoxydable présentant un état de surface améliorée |
Country Status (16)
Country | Link |
---|---|
US (1) | US5820704A (fr) |
EP (1) | EP0769333B1 (fr) |
JP (1) | JP3888396B2 (fr) |
KR (1) | KR100395288B1 (fr) |
CN (1) | CN1065458C (fr) |
AT (1) | ATE211662T1 (fr) |
AU (1) | AU716533B2 (fr) |
BR (1) | BR9605201A (fr) |
CA (1) | CA2188315C (fr) |
DE (1) | DE69618414T2 (fr) |
DK (1) | DK0769333T3 (fr) |
ES (1) | ES2170214T3 (fr) |
FR (1) | FR2740061B1 (fr) |
PT (1) | PT769333E (fr) |
TW (1) | TW438635B (fr) |
ZA (1) | ZA968722B (fr) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0927603A1 (fr) * | 1997-10-04 | 1999-07-07 | Klaus Bodo Meier | Procédé et installation pour le mattage de surface de tÔle d'acier inoxydable |
FR2777811B1 (fr) * | 1998-04-23 | 2000-05-19 | Usinor | Tole d'acier inoxydable austenitique utilisable dans le domaine de la cuverie et notamment dans le domaine de la cuverie vinicole |
CN1188228C (zh) * | 1998-12-18 | 2005-02-09 | 奥托库普不锈钢公司 | 用于生产带材的方法和轧制线 |
US6088895A (en) * | 1999-01-21 | 2000-07-18 | Armco Inc. | Method for descaling hot rolled strip |
FR2792857B1 (fr) | 1999-04-28 | 2001-07-27 | Kvaerner Metals Clecim | Procede de fabrication, en continu, d'une bande metallique |
JP2001020045A (ja) * | 1999-07-07 | 2001-01-23 | Nippon Steel Corp | ステンレス鋼板素材およびその製造方法 |
AT408451B (de) | 1999-11-18 | 2001-12-27 | Andritz Ag Maschf | Verfahren zur herstellung von edelstahlbändern mit verbesserten oberflächeneigenschaften |
US6205830B1 (en) * | 2000-02-24 | 2001-03-27 | The Material Works, Ltd. | Method and apparatus for processing sheet metal |
FR2807957B1 (fr) * | 2000-04-21 | 2002-08-02 | Vai Clecim | Procede et installation de laminage a froid |
KR20020014878A (ko) * | 2000-08-19 | 2002-02-27 | 이구택 | 고청정 미소둔 냉연강판의 제조방법 |
US6732561B2 (en) | 2002-09-23 | 2004-05-11 | The Material Works, Ltd. | Method and apparatus for leveling and conditioning sheet metal |
US6814815B2 (en) * | 2003-04-07 | 2004-11-09 | The Material Works, Ltd. | Method of removing scale and inhibiting oxidation in processed sheet metal |
US6814089B1 (en) | 2003-06-03 | 2004-11-09 | The Material Works, Ltd. | Conditioning liquid cleaning and recycling system for sheet metal conditioning apparatus |
CN1301159C (zh) * | 2003-09-23 | 2007-02-21 | 东北大学 | 条筛网用不锈钢异型条材及制备方法 |
JP4788861B2 (ja) * | 2003-11-28 | 2011-10-05 | ヤマハ株式会社 | 楽器弦用鋼線およびその製造方法 |
FR2867991B1 (fr) * | 2004-03-25 | 2007-05-04 | Ugine Et Alz France Sa | Bandes en acier inoxydable austenitique d'aspect de surface mat |
US20070044531A1 (en) * | 2005-08-31 | 2007-03-01 | Red Bud Industries, Inc. | Method and apparatus for conditioning sheet metal |
US8152687B2 (en) | 2007-01-24 | 2012-04-10 | Torotrack (Development) Limited | Powdered metal variator components |
PL2067541T3 (pl) * | 2007-12-05 | 2012-08-31 | Yieh United Steel Corp | Sposób ciągłego wytwarzania stali walcowanej na zimno |
KR101053414B1 (ko) * | 2008-07-04 | 2011-08-01 | 주식회사 포스코 | 열연강대의 스케일 제거방법 및 제거설비 |
CN101424595B (zh) * | 2008-12-11 | 2010-09-15 | 湖州职业技术学院 | 不锈钢线材生产线吐丝口定位综合检测实验装置 |
FR2942978B1 (fr) * | 2009-03-16 | 2011-03-18 | Fives Dms | Procede d'elaboration, en discontinu, d'une bande d'acier inoxydable a partir d'une bande d'acier prealablement laminee a chaud |
DE102010026757B4 (de) * | 2010-07-09 | 2012-07-05 | Andritz Sundwig Gmbh | Verfahren und Produktionslinie zum Herstellen eines kaltgewalzten Stahlflachprodukts aus einem nicht rostenden Stahl |
EP2682490B1 (fr) | 2011-03-01 | 2019-08-28 | Nippon Steel Corporation | Plaque métallique pour traitement au laser |
CN102310314B (zh) * | 2011-07-01 | 2013-03-20 | 云南钛业股份有限公司 | 一种钛及钛合金带卷加工方法 |
CN103537880B (zh) * | 2012-07-17 | 2016-03-30 | 宝山钢铁股份有限公司 | 一种激光焊机焊接高强钢的焊接方法 |
CN103394865A (zh) * | 2013-07-25 | 2013-11-20 | 太原科技大学 | 一种快速制坯的轧制金属复合板工艺 |
CN103862242B (zh) * | 2014-03-24 | 2016-05-18 | 无锡宝顺不锈钢有限公司 | 制造精密毛细管的317l不锈钢带的生产方法 |
CN103920710B (zh) * | 2014-03-27 | 2016-06-01 | 中冶南方工程技术有限公司 | 一种低耗耐蚀冷轧产品生产方法 |
CN103949853B (zh) * | 2014-04-21 | 2016-08-31 | 西部超导材料科技股份有限公司 | 一种人体植入物钛合金弧形板的加工方法 |
CN105132819B (zh) * | 2015-08-13 | 2016-11-30 | 山西太钢不锈钢股份有限公司 | 一种低铬铁素体不锈钢连续轧制的方法 |
US10022760B2 (en) * | 2015-10-02 | 2018-07-17 | The Material Works, Ltd. | Cut-to-length steel coil processing line with stretcher leveler and temper mill |
EP3526360A1 (fr) | 2016-10-17 | 2019-08-21 | Tata Steel IJmuiden B.V. | Acier pour pièces peintes |
US20200087761A1 (en) * | 2016-10-17 | 2020-03-19 | Tata Steel Ijmuiden B.V. | Steel substrate for painted parts |
JP2019034325A (ja) * | 2017-08-21 | 2019-03-07 | Jfeスチール株式会社 | フェライト系ステンレス冷延鋼帯の製造方法 |
US20190105720A1 (en) * | 2017-10-05 | 2019-04-11 | Honeywell International Inc. | System and method for trim loss optimization for metal industries |
CN108405608A (zh) * | 2018-02-08 | 2018-08-17 | 中冶南方工程技术有限公司 | 一种不锈钢冷轧生产机组及其生产方法 |
CN112605561A (zh) * | 2020-11-30 | 2021-04-06 | 江苏优轧机械有限公司 | 一种具有抛光组件的铜带轧制装置 |
CN115044912A (zh) * | 2022-05-17 | 2022-09-13 | 天津太钢天管不锈钢有限公司 | 一种高粗糙度高强度建筑用不锈钢的制造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2350503B1 (de) * | 1973-10-08 | 1975-01-23 | Bwg Bergwerk Walzwerk | Verfahren und Vorrichtung zum Entzundern und Planieren von Blechbaendern |
JPS5818436B2 (ja) * | 1977-03-31 | 1983-04-13 | 日新製鋼株式会社 | バフ研摩性の優れたステンレス鋼の冷延薄鋼板または鋼帯の製造法 |
JPS56127777A (en) * | 1980-03-12 | 1981-10-06 | Nippon Kokan Kk <Nkk> | Descaling method for steel member |
JPS5871336A (ja) * | 1981-10-21 | 1983-04-28 | Nisshin Steel Co Ltd | 疲労特性に優れた高強度オ−ステナイト系ステンレス鋼板の製造方法 |
JPS6024381A (ja) * | 1983-07-19 | 1985-02-07 | Nippon Steel Corp | 化成処理性の優れた片面めつき鋼板及びその製造法 |
KR900007072B1 (ko) * | 1985-03-15 | 1990-09-28 | 신닛뽄 세이데쓰 가부시끼가이샤 | 냉간압연 강스트립의 제조방법 및 장치 |
JPS62253732A (ja) * | 1986-04-28 | 1987-11-05 | Nippon Steel Corp | 研磨性のすぐれたオ−ステナイト系ステンレス鋼帯と鋼板の製造法 |
JPH0788534B2 (ja) * | 1989-04-05 | 1995-09-27 | 新日本製鐵株式会社 | 表面品質が優れたCr―Ni系ステンレス鋼薄板の製造方法 |
JPH0757363B2 (ja) * | 1990-03-12 | 1995-06-21 | 川崎製鉄株式会社 | ステンレス冷延鋼帯の製造方法 |
US5197179A (en) * | 1991-04-18 | 1993-03-30 | T. Sendzimir, Inc. | Means and a method of improving the quality of cold rolled stainless steel strip |
JP2983751B2 (ja) * | 1992-02-07 | 1999-11-29 | 日新製鋼株式会社 | ステンレス鋼帯用の一連の連続焼鈍及び脱スケール装置に後続配設される冷間圧延設備 |
TW296988B (fr) * | 1993-09-17 | 1997-02-01 | Hitachi Ltd | |
DE4423664A1 (de) * | 1994-07-07 | 1996-05-15 | Bwg Bergwerk Walzwerk | Verfahren zum Herstellen von kaltgewalzten Stahlbändern aus nichtrostendem Stahl und Metallbändern, insbesondere aus Titanlegierungen |
FI954819A (fi) * | 1994-10-14 | 1996-04-15 | Mannesmann Ag | Prosessi ja väline korkealuokkaisen kylmänä valssatun vanneteräksen valmistamiseksi kuumavalssatusta karkeasta vanneteräksestä |
DE4445716C2 (de) * | 1994-12-22 | 1997-10-02 | Sundwiger Eisen Maschinen | Verfahren und Fertigungslinie zum Herstellen von kaltgewaltzem, nicht rostendem Stahlband |
-
1995
- 1995-10-19 FR FR9512271A patent/FR2740061B1/fr not_active Expired - Fee Related
-
1996
- 1996-10-01 DE DE69618414T patent/DE69618414T2/de not_active Revoked
- 1996-10-01 PT PT96402086T patent/PT769333E/pt unknown
- 1996-10-01 ES ES96402086T patent/ES2170214T3/es not_active Expired - Lifetime
- 1996-10-01 DK DK96402086T patent/DK0769333T3/da active
- 1996-10-01 AT AT96402086T patent/ATE211662T1/de not_active IP Right Cessation
- 1996-10-01 EP EP96402086A patent/EP0769333B1/fr not_active Revoked
- 1996-10-16 ZA ZA9608722A patent/ZA968722B/xx unknown
- 1996-10-17 KR KR1019960046451A patent/KR100395288B1/ko not_active IP Right Cessation
- 1996-10-18 CN CN96112782A patent/CN1065458C/zh not_active Expired - Fee Related
- 1996-10-18 US US08/733,872 patent/US5820704A/en not_active Expired - Fee Related
- 1996-10-18 CA CA002188315A patent/CA2188315C/fr not_active Expired - Fee Related
- 1996-10-19 TW TW085112810A patent/TW438635B/zh not_active IP Right Cessation
- 1996-10-21 BR BR9605201A patent/BR9605201A/pt not_active IP Right Cessation
- 1996-10-21 AU AU70311/96A patent/AU716533B2/en not_active Ceased
- 1996-10-21 JP JP29772896A patent/JP3888396B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU716533B2 (en) | 2000-02-24 |
JP3888396B2 (ja) | 2007-02-28 |
JPH09122710A (ja) | 1997-05-13 |
TW438635B (en) | 2001-06-07 |
FR2740061A1 (fr) | 1997-04-25 |
MX9604877A (es) | 1997-10-31 |
FR2740061B1 (fr) | 1997-11-28 |
ATE211662T1 (de) | 2002-01-15 |
PT769333E (pt) | 2002-06-28 |
US5820704A (en) | 1998-10-13 |
CA2188315A1 (fr) | 1997-04-20 |
AU7031196A (en) | 1997-04-24 |
BR9605201A (pt) | 1998-07-21 |
CN1065458C (zh) | 2001-05-09 |
DE69618414T2 (de) | 2002-08-29 |
DE69618414D1 (de) | 2002-02-14 |
ZA968722B (en) | 1998-04-16 |
DK0769333T3 (da) | 2002-04-22 |
EP0769333A1 (fr) | 1997-04-23 |
KR100395288B1 (ko) | 2003-12-24 |
CA2188315C (fr) | 2004-09-14 |
KR970020236A (ko) | 1997-05-28 |
CN1156065A (zh) | 1997-08-06 |
ES2170214T3 (es) | 2002-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0769333B1 (fr) | Procédé d'élaboration, sur une ligne, en continu, d'une bande de tole laminée d'acier inoxydable présentant un état de surface améliorée | |
US8057604B2 (en) | Method and device for descaling metal strip | |
EP0792949B1 (fr) | Procédé de décapage d'une pièce en acier et notamment d'une bande de tôle en acier inoxydable | |
US5759307A (en) | Method of producing a cold-rolled strip in one pass | |
JP3407847B2 (ja) | 熱延鋼帯のディスケーリング方法 | |
JPH0610172A (ja) | オーステナイト系ステンレス熱間仕上鋼帯の処理方法 | |
JP4221984B2 (ja) | 極めて良好な表面光沢度を有するマルテンサイト系ステンレス鋼冷間圧延‐焼鈍‐酸洗鋼帯 | |
JP3370618B2 (ja) | ステンレス鋼冷間圧延鋼帯の酸洗方法 | |
US9487882B2 (en) | Titanium material and method for producing titanium material | |
FR2942978A1 (fr) | Procede d'elaboration, en discontinu, d'une bande d'acier inoxydable a partir d'une bande d'acier prealablement laminee a chaud | |
JPH0671604B2 (ja) | ステンレス冷延鋼帯の製造方法 | |
JP4604327B2 (ja) | 溶融金属めっき用素材鋼板の冷間圧延方法および合金化溶融金属めっき鋼板の製造方法 | |
JP2768221B2 (ja) | 金属ストリップ用コイルグラインダー装置 | |
JP3562084B2 (ja) | 熱延鋼板の製造方法 | |
JP2002294477A (ja) | 酸洗後の表面性状に優れる熱延鋼帯の酸洗方法 | |
JPH0517888A (ja) | ステンレス鋼帯の製造方法 | |
JP3457464B2 (ja) | オーステナイト系ステンレス熱延鋼帯の平滑酸洗方法 | |
MXPA96004877A (en) | Process of continuous elaboration of a laminated sheet of stainless steel, and continuous line for the use of proc | |
JP2002239604A (ja) | ステンレス冷延鋼板の製造方法 | |
RU2456376C2 (ru) | Способ комбинированной электродуговой обработки металлической проволоки или ленты и устройство для его реализации | |
JP3550996B2 (ja) | 表面性状に優れたオーステナイト系ステンレス鋼板の製造方法 | |
JPH0517827A (ja) | ステンレス鋼帯の焼鈍・脱スケール方法 | |
JP2000288619A (ja) | バフ研磨性が良好なオーステナイト系ステンレス鋼板の製造方法 | |
JPS60257905A (ja) | 冷延鋼板の製造方法 | |
JP2004001001A (ja) | 冷間タンデム圧延機及びそれを用いた極薄鋼板の冷間圧延方法 |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE |
|
17P | Request for examination filed |
Effective date: 19970303 |
|
17Q | First examination report despatched |
Effective date: 19981103 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: UGINE S.A. |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE |
|
REF | Corresponds to: |
Ref document number: 211662 Country of ref document: AT Date of ref document: 20020115 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: FRENCH |
|
REF | Corresponds to: |
Ref document number: 69618414 Country of ref document: DE Date of ref document: 20020214 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020410 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20020321 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2170214 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20020401356 Country of ref document: GR |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
26 | Opposition filed |
Opponent name: BWG BERGWERK- UND WALZWERK-MASCHINENBAU GMBH Effective date: 20021004 |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: BWG BERGWERK- UND WALZWERK-MASCHINENBAU GMBH |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
RDAF | Communication despatched that patent is revoked |
Free format text: ORIGINAL CODE: EPIDOSNREV1 |
|
APBP | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2O |
|
APBQ | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3O |
|
APAA | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOS REFN |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
R26 | Opposition filed (corrected) |
Opponent name: BWG BERGWERK- UND WALZWERK-MASCHINENBAU GMBH Effective date: 20021004 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: BWG BERGWERK- UND WALZWERK-MASCHINENBAU GMBH |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20070927 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20070926 Year of fee payment: 12 |
|
APBU | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9O |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20071003 Year of fee payment: 12 Ref country code: LU Payment date: 20071001 Year of fee payment: 12 Ref country code: ES Payment date: 20071120 Year of fee payment: 12 Ref country code: DK Payment date: 20071015 Year of fee payment: 12 Ref country code: DE Payment date: 20070927 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20071011 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20071004 Year of fee payment: 12 Ref country code: BE Payment date: 20071220 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20071009 Year of fee payment: 12 |
|
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 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 20070913 Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
27W | Patent revoked |
Effective date: 20080129 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Effective date: 20080129 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MP4A Effective date: 20080606 |
|
NLR2 | Nl: decision of opposition |
Effective date: 20080129 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: ECNC |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061031 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20081014 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20081028 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20071011 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20070927 Year of fee payment: 12 |