EP1814678A1 - Method and device for descaling a metal strip - Google Patents
Method and device for descaling a metal stripInfo
- Publication number
- EP1814678A1 EP1814678A1 EP06723474A EP06723474A EP1814678A1 EP 1814678 A1 EP1814678 A1 EP 1814678A1 EP 06723474 A EP06723474 A EP 06723474A EP 06723474 A EP06723474 A EP 06723474A EP 1814678 A1 EP1814678 A1 EP 1814678A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal strip
- cooling
- descaling
- strip
- plasma descaling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 109
- 239000002184 metal Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000001816 cooling Methods 0.000 claims abstract description 131
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims abstract description 4
- 238000005246 galvanizing Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims 1
- 238000013517 stratification Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005554 pickling Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241001474791 Proboscis Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
-
- 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
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0035—Means for continuously moving substrate through, into or out of the bath
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
- C23C2/004—Snouts
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/50—Controlling or regulating the coating processes
- C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0035—Forging or pressing devices as units
- B21B15/005—Lubricating, cooling or heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
-
- 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
Definitions
- the invention relates to a method for descaling a metal strip, in particular a hot rolled strip of normal steel or a hot or cold rolled strip of austenitic or ferritic stainless steel, in which the metal strip is guided in a conveying direction through at least one plasma descaling device, in the he is subjected to plasma descaling. Furthermore, the invention relates to a device for removing a metal strip.
- the strip passes between electrodes arranged above and below the strip through a vacuum chamber.
- the plasma is located between the electrodes and the tape surface on both sides of the tape.
- the effect of the plasma acting on the scale is the removal of the oxides on the strip surface, which is associated with an increase in the temperature of the strip; This can be very disadvantageous.
- the increase in temperature may result in the formation of an oxide film on the belt surface as the descaled belt exits the vacuum in air, which is not permitted for further processing such as cold rolling or direct hot strip processing.
- the invention is therefore based on the object to provide a method and an associated device for descaling a metal strip, with which it is possible to achieve a quality increase in the production of the metal strip, in particular by preventing oxidation processes, without the microstructure of the metal strip negative influence.
- the solution of this object by the invention according to the method is characterized in that the metal strip is subjected after the plasma descaling in at least one plasma descaling device in a cooling device such a kind of controlled cooling that it has a defined temperature behind the cooling device.
- the metal strip is subjected to plasma descaling at least twice, each time with subsequent controlled cooling.
- Oxidizing the descaled metal strip in the ambient atmosphere is prevented by the fact that the last controlled in the conveying direction controlled cooling so that the metal strip leaving the last cooling device in the conveying direction at a temperature of less than or equal to 100 0 C.
- the microstructure of the metal strip is not adversely affected by the fact that the plasma descaling in each of the plasma descaling device takes place so that the metal strip behind the plasma descaling device has a temperature of at most 200 ° C.
- the cooling of the metal strip in the at least one cooling device takes place in that the metal strip is brought into contact with a cooling roller via a predeterminable wrap angle.
- the cooled roll dissipates heat on contact with the metal strip therefrom.
- the metal strip is held under tension at least in the area of contact with the cooling roller.
- the metal strip is cooled at least substantially to the same temperature in each of the cooling subsequent to the plasma descaling. It is also advantageous if, alternatively or in addition thereto, the metal strip is cooled at least essentially by the same temperature difference in each of the cooling subsequent to the plasma descaling.
- the cooling of the metal strip in the one or more cooling devices is preferably carried out under reduced pressure relative to the ambient pressure, in particular under vacuum.
- the cooling of the metal strip takes place in the last cooling device in the conveying direction under a protective gas, in particular under nitrogen.
- the device for descaling the metal strip has at least one plasma descaling device, through which the metal strip is guided in the conveying direction.
- the device is characterized by at least one cooling device arranged downstream of the plasma descaling device in the conveying direction and suitable for controlled cooling of the metal strip to a defined temperature.
- a temperature sensor is arranged, which communicates with a control device which is suitable for influencing the cooling device with regard to the cooling power generated by it and / or the conveying speed of the metal strip.
- each cooling device has at least three cooling rollers which are arranged and movable relative to each other such that the wrap angle between the metal strip and the roll surface is variable.
- the cooling capacity can be influenced, which applies the cooling device on the metal strip, ie how much the cooling device cools the metal strip.
- Movement means are therefore preferably provided with which at least one cooling roller can be moved relative to another cooling roller perpendicular to the axes of rotation of the cooling rollers.
- the cooling rolls are preferably liquid-cooled, in particular water-cooled.
- means for generating a tensile force in the metal strip may be provided, at least in the region of the cooling devices. This ensures a good contact of the metal strip on the cooling rolls.
- At least two plasma descaling devices and at least two downstream cooling devices are arranged in a straight line.
- An alternative to this, which is space-saving, provides that a plasma descaling device is arranged so that the metal strip is guided vertically upwards (or downwards) in it, and another plasma descaling device is arranged so that the metal strip in her vertically down (or up) is performed with a cooling device is disposed between the two plasma descaling.
- a good cooling effect of the cooling rollers can be achieved if they have on their lateral surface a coating with a wear-resistant and highly thermally conductive material, in particular with hard chrome or ceramic.
- the metal strip to be descaled has a very good and unoxidized surface following descaling, so that the subsequent operations can be carried out with high quality.
- the invention thus ensures that the metal strip is cooled during and after the descaling controlled to a temperature which is below the temperature at which an oxidation or tarnishing on the strip surface can occur in air.
- a metal strip in particular a hot rolled strip of normal steel, in which the metal strip is guided in a conveying direction through at least one plasma descaling device in which it is subjected to plasma descaling, it can be provided that the plasma descaling directly or indirectly Coating the metal strip is followed by a coating metal, in particular a hot dip galvanizing of the metal strip.
- the energy introduced by the plasma descaling into the metal strip can be used to preheat the metal strip prior to coating.
- the metal strip is preferably first plasma-demineralized in a coupled system and then coated, in particular hot-dip galvanized.
- the metal strip preheated by the plasma descaling is preferably conducted without air access from the plasma descaling into the protective gas atmosphere of a continuous furnace required for the coating, where the strip is further heated to the temperature required for the coating.
- the strip heating can be inductive after plasma descaling
- Heat-to-coat method, whereby the tape, in particular the too galvanizing hot strip, very quickly under reduced atmosphere to 440 0 C to 520 0 C, in particular to about 460 0 C, are heated before it enters the coating.
- the plasma descaling downstream coating can be carried out according to the conventional method with deflection roller in the coating container or by the vertical method (Continuous Vertical Galvanizing Line - CVGL method), in which the coating metal is retained in the coating container by an electromagnetic closure.
- the metal strip dives only very briefly into the coating metal.
- the plasma descaling system can be coupled to a continuous hot-rolled steel strip furnace, with a vacuum lock on the outlet side of the plasma descaling system and a conventional type of furnace lock on the inlet side of the continuous furnace, which are connected in a gastight manner.
- the strip must be heated to a temperature which is about 460 0 C to 650 0 C, depending on the heating rate.
- the band heating arising during plasma descaling can be used as pre-heating of the strip before it enters the continuous furnace, thereby achieving energy savings and a shortening of the furnace.
- FIG. 2 shows an analogous to Fig. 1 representation of a second embodiment of the device
- FIG. 3 shows schematically three cooling rolls of a cooling device with low cooling power
- FIG. 4 shows the illustration analogous to FIG. 3 at high cooling power of the cooling device
- Fig. 5 shows schematically a device for descaling and subsequent hot dip galvanizing of the metal strip in the side view.
- a device for descaling a steel strip 1 can be seen, this plant is designed in a horizontal design.
- the steel strip 1 coming from an uncoiler 19 is directed in a stretch-bending machine 20 with the associated S-roll stands 21 and 22 so that the metal strip 1 is as flat as possible before the strip enters the process part of the plant under high tension.
- the belt 1 enters a first plasma descaling device 2, in which the vacuum required for the plasma descaling is generated and maintained by means of known vacuum pumps.
- the plasma descaling device 2 are located on both sides of the belt 1 arranged electrodes 24, which generate the plasma required for descaling.
- the plasma heats the strip surface on both sides, resulting in a heating of the entire strip cross-section to a temperature of max. 200 0 C at the end of the plasma descaling device 2 can lead.
- the amount of belt heating over the total cross-section depends mainly on the conveying speed v of the metal strip 1 and the strip thickness with the same energy of the plasma, with increasing strip speed v and strip thickness the strip heating being lower.
- the not yet completely descaled belt 1 runs in a cooling device 4 provided with cooling rollers 6, 7, 8 which is connected in a gas-tight manner to the plasma descaling device 2 and in which the same vacuum prevails as in the plasma descaling device 2 ,
- the belt 1 runs around the cooling rollers 6, 7, 8, the circumference of which is cooled from the inside with water, which dissipates the heat through a cooling circuit.
- the high strip tension causes the band 1 - the cooling rollers 6, 7, 8 wrapped around - good at these, in order to ensure the highest possible heat transfer.
- the cooling rollers 6, 7, 8 wrap around the metal strip 1 alternately from above and from below. Preferably, three to seven cooling rolls are provided.
- the cooling water for cooling the cooling rolls is fed continuously via rotary feedthroughs and discharged again.
- cooling rollers 6, 7, 8 there are three cooling rollers 6, 7, 8 in the cooling device 4, which are driven individually. Depending on the performance and maximum belt speed v of the system, more cooling rollers are possible and useful.
- On the inlet side and the outlet side of the cooling device 4 are temperature sensors 12 for the continuous measurement of the temperature of the metal strip 1.
- the wrap angle ⁇ By setting one (or more) of the cooling rolls 6, 7, 8 (see Fig. 3 and Fig. 4), for example in vertical Direction, the wrap angle ⁇ (see Fig. 3 and Fig. 4) and thus the cooling capacity of the cooling device 4 can be controlled, which acts on the metal strip 1.
- the maximum strip temperature should be about 100 0 C.
- the cooled strip 1 passes into a second plasma descaling device 3, which is connected in a gastight manner to the cooling device 4 and in which the same vacuum is generated by means of vacuum pumps as in the first plasma descaling device 2.
- the second plasma descaling device 3 which is constructed similarly to the first one, the complete descaling of the strip 1 which is not yet fully descaled in the first plasma descaling device 2 takes place.
- the strip 1 heats up similarly as in the plasma Entzundervorides 2 to a final temperature, which is dependent on the belt speed v and the belt cross-section about 100 0 C to 200 0 C above the inlet temperature in the plasma descaling device 3.
- the strip 1 passes through a gas-tight lock 25 into the second cooling device 5 filled with protective gas (eg nitrogen), which is provided with cooling rolls 9, 10, 11 as the first cooling device 4.
- protective gas eg nitrogen
- the individual plasma descaling devices 2 and 3 or more of these devices are all designed to be the same length.
- the number of cooling rollers 6, 7, 8, 9, 10, 11 depends on the performance of the system.
- the belt 1 is cooled by the cooling rollers 9, 10, 11 to a final temperature which is not above 100 0 C.
- temperature sensors 13 for measuring the strip temperature are again located on the inlet side and outlet side of the cooling device 5.
- At the end of the cooling device 5 is another gas-tight lock 26, which prevents the entry of air into the cooling device 5.
- a train roller stand 18 consisting of two or three rollers which applies the required strip tension or holds it together with the S-roller stand 22.
- the elements marked with the reference numerals 17 and 18 thus represent means for generating a tensile force in the belt 1.
- the tensile force generated in the belt 1 serves to ensure good contact of the belt 1 on the cooling rollers 6, 7, 8, 9, 10 To ensure 11.
- the tape 1 passes through the necessary other facilities, such as tape storage and Bekladschere, to the reel 27 (as shown) or other coupled devices, eg. B. to a tandem mill.
- the proposed plasma entrainment system can have one or more plasma descaling devices 2, 3 with adjoining cooling devices 4, 5.
- the embodiment of FIG. 1 is based on two such units. If only one cooling device 4 is used, this is similar to the second cooling device 5 described here with the associated locks 25 and 26 are formed.
- Fig. 2 shows an alternative embodiment of the plant for the descaling of steel strip 1, in which the plasma descaling devices 2 and 3 are arranged vertically (vertically). All functions in this system are identical to those of the system illustrated in FIG. A vertical arrangement may, under certain conditions, be more favorable than a horizontal arrangement because of its shorter length.
- the cooling capacity in the cooling devices 4, 5 can be influenced by means of control devices 14 and 15 shown only schematically in FIG. 1, so that a desired outlet temperature of the belt 1 can be achieved. If the measured temperature is too high, a higher wrap angle ⁇ can be set by controlling the movement means 16, so that the band 1 is cooled better. In principle, the conveying speed v of the belt 1 can also be reduced or increased by the system in order to increase or reduce the cooling capacity. Here, of course, then a vote between the two control devices 14 and 15 is required.
- FIG. 5 shows the process part of a coupled plasma descaling and hot-dip galvanizing line for hot-rolled steel strip.
- the strip 1 passes after the stretch straightening in the stretch-bending machine 20 (stretcher straightening unit) through a vacuum lock 23 in the plasma descaling 2, where it descaled and thereby - depending on the belt speed and the belt thickness - to about 200 0 C to 300 0 C. is heated.
- the belt 1 passes through a vacuum outlet lock 25 and through the furnace inlet lock 29 connected thereto into a continuous furnace 28.
- a pair of draw rollers 30 (hot letter) which has the required high strip tension in the plasma descaling device 2 generated. Behind the tension roller pair 30, the belt temperature is measured with a temperature sensor 12, via which the required further belt heating in the continuous furnace 28 is controlled. From the location of the sensor 12, the belt 1 passes through the inductively heated continuous furnace 28, in which it is heated very quickly by the "heat-to-coat" process to about 460 ° C.
- the belt runs over a trunk 31 the coating container 32, where it is hot-dip galvanized
- the layer thickness is controlled by the wiping nozzles 34.
- the metal strip 1 is cooled and then fed to the further required process steps, for example, the temper rolling, the stretch straightening and the chromating.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06723474T PL1814678T3 (en) | 2005-03-17 | 2006-03-16 | Method and device for descaling a metal strip |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005012296A DE102005012296A1 (en) | 2005-03-17 | 2005-03-17 | Method and device for descaling a metal strip |
PCT/EP2006/002429 WO2006097311A1 (en) | 2005-03-17 | 2006-03-16 | Method and device for descaling a metal strip |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1814678A1 true EP1814678A1 (en) | 2007-08-08 |
EP1814678B1 EP1814678B1 (en) | 2008-05-21 |
EP1814678B2 EP1814678B2 (en) | 2014-08-27 |
Family
ID=36293315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06723474.0A Not-in-force EP1814678B2 (en) | 2005-03-17 | 2006-03-16 | Method and device for descaling a metal strip |
Country Status (22)
Country | Link |
---|---|
US (3) | US8057604B2 (en) |
EP (1) | EP1814678B2 (en) |
JP (1) | JP5085332B2 (en) |
KR (1) | KR101158334B1 (en) |
CN (1) | CN101142037B (en) |
AR (1) | AR053183A1 (en) |
AT (1) | ATE395987T1 (en) |
AU (2) | AU2006224727B2 (en) |
BR (1) | BRPI0605933A2 (en) |
CA (2) | CA2589605C (en) |
DE (2) | DE102005012296A1 (en) |
EA (1) | EA010615B1 (en) |
EG (1) | EG24523A (en) |
ES (1) | ES2306432T3 (en) |
MX (1) | MX2007011017A (en) |
MY (1) | MY139748A (en) |
PL (1) | PL1814678T3 (en) |
RS (1) | RS51457B (en) |
TW (1) | TW200643219A (en) |
UA (2) | UA89810C2 (en) |
WO (1) | WO2006097311A1 (en) |
ZA (1) | ZA200703347B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010083797A2 (en) * | 2009-01-22 | 2010-07-29 | Sms Siemag Aktiengesellschaft | Method and device for annealing and descaling strips of stainless steel |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT503377B1 (en) * | 2006-02-02 | 2008-09-15 | Eiselt Primoz | METHOD AND DEVICE FOR PLASMA TREATMENT OF MATERIALS |
KR101372624B1 (en) * | 2006-12-27 | 2014-03-10 | 주식회사 포스코 | Method for producing hot-dip aluminized stainless steel sheet using atmospheric pressure plasma |
KR101428059B1 (en) * | 2007-12-27 | 2014-08-07 | 주식회사 포스코 | Apparatus for Cooling hot strip |
TW201121864A (en) * | 2009-12-23 | 2011-07-01 | Metal Ind Res & Dev Ct | Continuous feeding device of vacuum process equipment. |
CA2786513A1 (en) * | 2010-01-11 | 2011-07-14 | Kolene Corporation | Metal surface scale conditioning |
KR101248082B1 (en) * | 2011-03-30 | 2013-03-27 | (주) 엠에이케이 | Plasma Treatment Apparatus Of Wire Carbon Fiber And Method Thereof |
CN102728633A (en) * | 2011-04-07 | 2012-10-17 | 福建金锋钢业有限公司 | Steel belt scale breading and straightening device |
EP2714408B2 (en) * | 2011-06-01 | 2018-04-11 | Koenig & Bauer AG | Printing machine and process to control web tension |
CN102828195A (en) * | 2011-06-14 | 2012-12-19 | 辽宁科技大学 | Method and apparatus of continuous reduction descaling of hot-rolled strip |
KR101321998B1 (en) * | 2011-08-10 | 2013-10-28 | 주식회사 포스코 | System of deleting oxide layer of steel sheet |
CN102836873A (en) * | 2012-09-13 | 2012-12-26 | 山东沃德动力科技有限公司 | Stainless steel band rolling system |
CN102896161B (en) * | 2012-10-22 | 2016-01-13 | 北京首钢股份有限公司 | A kind of minimizing technology of boracic cold-rolled steel hot rolling iron scale |
DE102014118946B4 (en) * | 2014-12-18 | 2018-12-20 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Apparatus and method for the continuous treatment of a metal strip |
CN104690109B (en) * | 2015-04-03 | 2016-06-01 | 秦皇岛新禹机械设备有限公司 | A kind of in linear wire epidermis treatment system |
CN104846170A (en) * | 2015-06-04 | 2015-08-19 | 马钢(集团)控股有限公司 | Hydrogen ion generation device for annealing and reduction of electrical steel and annealing and reduction method of hydrogen ion generation device |
CN105689408A (en) * | 2016-03-07 | 2016-06-22 | 首钢京唐钢铁联合有限责任公司 | Hot rolling control method for scale on edges of low-carbon aluminum killed steel |
CN105642672A (en) * | 2016-03-09 | 2016-06-08 | 首钢京唐钢铁联合有限责任公司 | Control method for oxide scale of steel containing phosphorus and boron |
CN106312829B (en) * | 2016-10-19 | 2019-03-22 | 中铁隆昌铁路器材有限公司 | Fastener raw material scale on surface treatment process |
EP3434383A1 (en) * | 2017-07-24 | 2019-01-30 | Primetals Technologies Austria GmbH | Scaffold cooler for cooling a steel strip in a rolling stand |
CN107686957A (en) * | 2017-08-28 | 2018-02-13 | 北京首钢冷轧薄板有限公司 | A kind of method for switching air knife medium injection method |
CN110369508B (en) * | 2019-07-20 | 2020-10-20 | 东阳市和宇金属材料有限公司 | Stainless steel strip cold rolling device |
CN113755797A (en) * | 2020-06-02 | 2021-12-07 | 宝山钢铁股份有限公司 | System and method for moving heating and coating Zn layer on surface of strip steel |
CN111534673A (en) * | 2020-06-09 | 2020-08-14 | 首钢集团有限公司 | Method for improving surface quality of strip steel acid pickling |
CN113846291A (en) * | 2020-06-28 | 2021-12-28 | 宝山钢铁股份有限公司 | Cleaning, coating and plating combined unit for galvanized steel sheet/coil and production method thereof |
KR102451424B1 (en) * | 2020-07-14 | 2022-10-05 | 이창훈 | System and method for cleaning surface of substrate using roll-to-roll plasma generating device |
CN113145672A (en) * | 2021-05-17 | 2021-07-23 | 山东绿钢环保科技股份有限公司 | Efficient descaling system for steel strip |
Family Cites Families (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US475579A (en) * | 1892-05-24 | Spark-arrester an | ||
US2890037A (en) † | 1954-11-10 | 1959-06-09 | United States Steel Corp | Method and apparatus for continuously cooling metal strips |
FR1526302A (en) * | 1967-04-14 | 1968-05-24 | Siderurgie Fse Inst Rech | Method and device for cooling hot rolled strips |
JPS5993826A (en) † | 1982-11-18 | 1984-05-30 | Nippon Kokan Kk <Nkk> | Manufacture of soft sheet for tinning |
JPS59143028A (en) * | 1983-02-03 | 1984-08-16 | Nippon Steel Corp | Cooler for metallic strip in continuous heat treating furnace |
JPS609962U (en) * | 1983-06-29 | 1985-01-23 | 日本鋼管株式会社 | Roll cooling equipment |
JPS60221533A (en) † | 1984-04-17 | 1985-11-06 | Mitsubishi Heavy Ind Ltd | Device for cooling metallic strip |
EP0397952B1 (en) † | 1989-05-18 | 1994-08-17 | Nisshin Steel Co., Ltd. | A method and apparatus for the continuous etching and aluminum plating of stainless steel strips |
FR2651795B1 (en) † | 1989-09-14 | 1993-10-08 | Sollac | DEVICE FOR COOLING BY CONTACT OF ROLLERS FOR THE CONTINUOUS HARDENING OF A PREHEATED STEEL STRIP. |
JPH03120346A (en) * | 1989-10-02 | 1991-05-22 | Nkk Corp | Pretreatment for hot dipping |
JP2798813B2 (en) | 1991-03-26 | 1998-09-17 | 日新製鋼株式会社 | High-speed hot-dip plating method |
JPH05105941A (en) * | 1991-10-11 | 1993-04-27 | Nippon Steel Corp | Method for cooling vacuum arc treated material |
JP3120346B2 (en) | 1991-11-26 | 2000-12-25 | 東急建設株式会社 | lift device |
JPH0688184A (en) | 1992-09-09 | 1994-03-29 | Nippon Steel Corp | Production of hot-dipcoated steel sheet |
JPH06116653A (en) * | 1992-10-07 | 1994-04-26 | Nippon Steel Corp | Production of low cost type hot rolled and hot dip plated steel strip excellent in plating surface property and plating adhesion and device therefor |
JPH0661305U (en) * | 1992-12-28 | 1994-08-30 | 株式会社神戸製鋼所 | Water cooling roll equipment |
JPH06199068A (en) * | 1993-01-08 | 1994-07-19 | Nippon Steel Corp | Roller coated with hydrophilic ceramics |
JPH06279842A (en) * | 1993-01-29 | 1994-10-04 | Mitsubishi Heavy Ind Ltd | Continuous plasma reduction apparatus for steel sheet |
JP3404784B2 (en) * | 1993-02-26 | 2003-05-12 | 川崎製鉄株式会社 | Method and apparatus for continuous production of steel strip with excellent surface treatment |
JP3376621B2 (en) | 1993-03-01 | 2003-02-10 | 住友金属工業株式会社 | Method for producing low CaO sintered ore |
JPH06280068A (en) * | 1993-03-24 | 1994-10-04 | Nippon Steel Corp | Vacuum arc treating device |
JPH06336662A (en) | 1993-05-28 | 1994-12-06 | Kawasaki Steel Corp | Continuous manufacture of galvanized steel sheet |
JPH07132316A (en) * | 1993-11-10 | 1995-05-23 | Kawasaki Steel Corp | Continuous descaling method for metallic strip |
JPH07144212A (en) * | 1993-11-25 | 1995-06-06 | Nippon Steel Corp | Line of devices for metal surface treatment |
AU8000498A (en) † | 1994-01-31 | 1998-10-01 | Graham Group | Electromagnetic seal |
BR9606325A (en) * | 1995-04-14 | 1997-09-16 | Nippon Steel Corp | Apparatus for the production of a stainless steel strip |
JPH08325689A (en) † | 1995-05-30 | 1996-12-10 | Nippon Steel Corp | Equipment for manufacturing hot dip galvanized hot rolled steel sheet excellent in lubricity and chemical conversion |
CA2225537C (en) * | 1996-12-27 | 2001-05-15 | Mitsubishi Heavy Industries, Ltd. | Hot dip coating apparatus and method |
BE1010913A3 (en) * | 1997-02-11 | 1999-03-02 | Cockerill Rech & Dev | Annealing process substrate metal in parade. |
JPH10330899A (en) † | 1997-06-04 | 1998-12-15 | Nkk Corp | Hot dip plating method for hot rolled steel sheet and device therefor |
JPH11209860A (en) † | 1998-01-26 | 1999-08-03 | Nkk Corp | Production of hot rolled steel sheet under coated with hot dip galveniizing |
BR9904910A (en) † | 1998-03-26 | 2000-06-20 | Kawasaki Steel Co | Continuous heat treatment oven and atmosphere control process and oven cooling process |
RU2145912C1 (en) | 1998-09-08 | 2000-02-27 | Сенокосов Евгений Степанович | Method for working surface of metallic strip and apparatus for performing the same |
JP3747664B2 (en) * | 1998-12-09 | 2006-02-22 | Jfeスチール株式会社 | Steel plate inspection method, manufacturing method, and cold rolled steel plate manufacturing equipment |
JP2000190013A (en) * | 1998-12-24 | 2000-07-11 | Nippon Steel Corp | Tension bridle equipment |
AU3085300A (en) | 1999-03-23 | 2000-10-09 | Viktor Ivanovich Dikarev | Method for the vacuum arc-processing of a metallic wire (cable, strip), device for realising the same and variants |
JP4297561B2 (en) | 1999-07-06 | 2009-07-15 | ジーイー横河メディカルシステム株式会社 | Opacity setting method, three-dimensional image forming method and apparatus, and ultrasonic imaging apparatus |
RU2149930C1 (en) * | 1999-07-30 | 2000-05-27 | Рябков Данила Витальевич | Method of surface modification of metal articles and device for method realization |
JP4075237B2 (en) † | 1999-08-17 | 2008-04-16 | 松下電工株式会社 | Plasma processing system and plasma processing method |
JP2001140051A (en) | 1999-11-12 | 2001-05-22 | Kawasaki Steel Corp | Method of manufacturing hot dip metal coated steel sheet and galvanized steel sheet and hot-dipping metal coating apparatus |
JP2001234252A (en) † | 2000-02-21 | 2001-08-28 | Kawasaki Steel Corp | Steel strip carrying method |
JP2004514054A (en) * | 2000-11-10 | 2004-05-13 | アピト コープ.エス.アー. | Air plasma method and apparatus for treating sheet conductive material |
JP2002302315A (en) * | 2001-04-10 | 2002-10-18 | Nkk Corp | Non-contact sheet passing direction turning device and method of manufacturing steel strip |
US20030085113A1 (en) * | 2001-05-10 | 2003-05-08 | Andrews Edgar. H. | Process and apparatus for cleaning and/or coating metal surfaces using electro-plasma technology |
JP2004010983A (en) * | 2002-06-07 | 2004-01-15 | Jfe Steel Kk | Apparatus for non-contact changing of strip run direction and method for manufacturing plated steel strip |
EP1563524B1 (en) * | 2002-11-07 | 2011-04-20 | Advanced Lighting Technologies, Inc. | Method of making oxidation-protected metallic foils |
DE10252178A1 (en) * | 2002-11-09 | 2004-05-27 | Sms Demag Ag | Process for descaling and/or cleaning a metal strand, especially a hot-rolled strip made from normal steel or a stainless steel, comprises feeding the strand with a high degree of planarity through a plasma descaling and/or cleaning device |
DE10254306A1 (en) | 2002-11-21 | 2004-06-03 | Sms Demag Ag | Method and device for hot-dip coating a metal strand |
JP5105941B2 (en) | 2007-04-10 | 2012-12-26 | キヤノン株式会社 | Image forming apparatus |
-
2005
- 2005-03-17 DE DE102005012296A patent/DE102005012296A1/en not_active Withdrawn
-
2006
- 2006-03-16 EA EA200701265A patent/EA010615B1/en not_active IP Right Cessation
- 2006-03-16 CN CN2006800084941A patent/CN101142037B/en not_active Expired - Fee Related
- 2006-03-16 RS RSP-2007/0281A patent/RS51457B/en unknown
- 2006-03-16 MX MX2007011017A patent/MX2007011017A/en active IP Right Grant
- 2006-03-16 EP EP06723474.0A patent/EP1814678B2/en not_active Not-in-force
- 2006-03-16 AU AU2006224727A patent/AU2006224727B2/en not_active Ceased
- 2006-03-16 CA CA2589605A patent/CA2589605C/en not_active Expired - Fee Related
- 2006-03-16 JP JP2007542006A patent/JP5085332B2/en not_active Expired - Fee Related
- 2006-03-16 CA CA2779481A patent/CA2779481C/en not_active Expired - Fee Related
- 2006-03-16 ES ES06723474T patent/ES2306432T3/en active Active
- 2006-03-16 PL PL06723474T patent/PL1814678T3/en unknown
- 2006-03-16 US US11/886,397 patent/US8057604B2/en not_active Expired - Fee Related
- 2006-03-16 BR BRPI0605933-3A patent/BRPI0605933A2/en not_active IP Right Cessation
- 2006-03-16 DE DE502006000800T patent/DE502006000800D1/en active Active
- 2006-03-16 AT AT06723474T patent/ATE395987T1/en active
- 2006-03-16 UA UAA200708882A patent/UA89810C2/en unknown
- 2006-03-16 KR KR1020077010509A patent/KR101158334B1/en active IP Right Grant
- 2006-03-16 WO PCT/EP2006/002429 patent/WO2006097311A1/en active IP Right Grant
- 2006-03-16 UA UAA200908026A patent/UA96468C2/en unknown
- 2006-03-17 AR ARP060101065A patent/AR053183A1/en active IP Right Grant
- 2006-03-17 TW TW095109083A patent/TW200643219A/en unknown
- 2006-03-17 MY MYPI20061190A patent/MY139748A/en unknown
-
2007
- 2007-04-24 ZA ZA200703347A patent/ZA200703347B/en unknown
- 2007-06-11 EG EGNA2007000569 patent/EG24523A/en active
-
2009
- 2009-06-02 AU AU2009202178A patent/AU2009202178B2/en not_active Ceased
-
2011
- 2011-04-14 US US13/086,635 patent/US20110186224A1/en not_active Abandoned
- 2011-04-14 US US13/086,678 patent/US8728244B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006097311A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010083797A2 (en) * | 2009-01-22 | 2010-07-29 | Sms Siemag Aktiengesellschaft | Method and device for annealing and descaling strips of stainless steel |
WO2010083797A3 (en) * | 2009-01-22 | 2010-12-09 | Sms Siemag Aktiengesellschaft | Method and device for annealing and descaling strips of stainless steel |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1814678B1 (en) | Method and device for descaling a metal strip | |
EP2035587B1 (en) | A method and a system for producing hot-rolled strip silicon steel based on thin slabs | |
EP2710159B1 (en) | Method and device for preparing steel milled goods before hot rolling | |
EP1558779B1 (en) | Method and device for descaling and/or cleaning a metal casting | |
WO2010121763A1 (en) | Process and apparatus for the continuous casting of a slab | |
WO2017001283A2 (en) | Device and method for producing a galvanized steel strip | |
EP3097218A1 (en) | Method and system for hot-dip coating hot-rolled steel strips | |
EP2523774B1 (en) | Method and device for in-line surface treatment of slabs | |
EP2389260B1 (en) | Method and device for annealing and descaling strips of stainless steel | |
EP3925716B1 (en) | Method for press hardening thermoformable blanks | |
WO2022036381A1 (en) | Method for processing a steel sheet | |
EP1261751B1 (en) | Method and installation for hot dip coating metal strips | |
DE102016011047A1 (en) | Flexible heat treatment plant for metallic strip in horizontal construction | |
DE10234109A1 (en) | Method and device for the continuous production of metallic strips | |
WO2016162262A1 (en) | Method for the heat treatment of an al strip consisting of aluminium or an aluminium alloy and strip treatment line | |
DE1222955B (en) | Process for the continuous skin-passing of a hard-rolled steel strip | |
DE10307050A1 (en) | Process to de-scale hot-rolled sheet steel by first-stage exposure to plasma cloud followed by second-stage etching |
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: 20070622 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
DAX | Request for extension of the european patent (deleted) | ||
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: RO Ref legal event code: EPE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: CH Ref legal event code: NV Representative=s name: SCHMAUDER & PARTNER AG PATENTANWALTSBUERO |
|
REF | Corresponds to: |
Ref document number: 502006000800 Country of ref document: DE Date of ref document: 20080703 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
REG | Reference to a national code |
Ref country code: HU Ref legal event code: AG4A Ref document number: E003554 Country of ref document: HU |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2306432 Country of ref document: ES Kind code of ref document: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080921 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081021 |
|
26 | Opposition filed |
Opponent name: SIEMENS VAI METALS TECHNOLOGIES SAS Effective date: 20090205 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080821 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: SIEMENS VAI METALS TECHNOLOGIES SAS |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: SMS SIEMAG AG |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
NLT2 | Nl: modifications (of names), taken from the european patent patent bulletin |
Owner name: SMS SIEMAG AG Effective date: 20090617 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: SCHMAUDER & PARTNER AG PATENT- UND MARKENANWAELTE VSP;ZWAENGIWEG 7;8038 ZUERICH (CH) |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080822 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SK Payment date: 20110315 Year of fee payment: 6 Ref country code: PL Payment date: 20110223 Year of fee payment: 6 Ref country code: CZ Payment date: 20110311 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20120328 Year of fee payment: 7 Ref country code: HU Payment date: 20120329 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20120313 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20120322 Year of fee payment: 7 Ref country code: RO Payment date: 20120301 Year of fee payment: 7 Ref country code: SE Payment date: 20120322 Year of fee payment: 7 Ref country code: FI Payment date: 20120313 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20120327 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20120327 Year of fee payment: 7 |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20131001 |
|
R26 | Opposition filed (corrected) |
Opponent name: SIEMENS VAI METALS TECHNOLOGIES SAS Effective date: 20090205 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
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: 20130317 Ref country code: CZ Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130316 |
|
REG | Reference to a national code |
Ref country code: SK Ref legal event code: MM4A Ref document number: E 3920 Country of ref document: SK Effective date: 20130316 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 Ref country code: SK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 |
|
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: 20131001 Ref country code: HU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130317 Ref country code: RO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20140606 |
|
PUAH | Patent maintained in amended form |
Free format text: ORIGINAL CODE: 0009272 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT MAINTAINED AS AMENDED |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: LAPE |
|
27A | Patent maintained in amended form |
Effective date: 20140827 |
|
AK | Designated contracting states |
Kind code of ref document: B2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R102 Ref document number: 502006000800 Country of ref document: DE |
|
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: 20130317 Ref country code: PL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: AELC |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R102 Ref document number: 502006000800 Country of ref document: DE Effective date: 20140827 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140827 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 502006000800 Country of ref document: DE Representative=s name: HEMMERICH & KOLLEGEN, DE Ref country code: DE Ref legal event code: R081 Ref document number: 502006000800 Country of ref document: DE Owner name: SMS GROUP GMBH, DE Free format text: FORMER OWNER: SMS SIEMAG AKTIENGESELLSCHAFT, 40237 DUESSELDORF, DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130316 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20180321 Year of fee payment: 13 Ref country code: DE Payment date: 20180322 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20180322 Year of fee payment: 13 Ref country code: BE Payment date: 20180321 Year of fee payment: 13 Ref country code: FR Payment date: 20180323 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: 20180327 Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502006000800 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 395987 Country of ref document: AT Kind code of ref document: T Effective date: 20190316 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20190331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191001 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190316 |
|
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: 20190331 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190316 |