EP2185747A2 - Procéde et equipment de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique - Google Patents
Procéde et equipment de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydrauliqueInfo
- Publication number
- EP2185747A2 EP2185747A2 EP08843858A EP08843858A EP2185747A2 EP 2185747 A2 EP2185747 A2 EP 2185747A2 EP 08843858 A EP08843858 A EP 08843858A EP 08843858 A EP08843858 A EP 08843858A EP 2185747 A2 EP2185747 A2 EP 2185747A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzles
- water
- descaling
- pressure
- strip
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
Definitions
- the present invention relates to the descaling operation of a metal strip, in particular steel, scrolling during hot rolling before entering the milling or finishing cages of the rolling mill
- this operation is more commonly called “secondary descaling", as opposed to the "primary” descaling which intervenes on the steel slabs at the exit of the reheating furnace before rolling.
- secondary descaling of the steel strips is intended to rid the surface of the band of the so-called secondary scale, which is formed by rapid reoxidation of the hot metal during the stay of the strip in the open air after its primary descaling on leaving the oven. It thus intervenes doubly during the rolling, first before the entry of the strip in the roughing, and before entering the finisher rolling mill.
- the secondary scale is generally in the form of an adherent layer of metal oxides, typically between 50 and 100 microns thick, rather irregular in appearance.
- the secondary descaling is successful when it provides at the entrance of the finisher a steel strip having on the surface a uniform layer of residual scale of 20 to 30 microns thick just beyond, to avoid encrustations of oxides on rolling rolls.
- the descaling operation consists schematically in impacting the surface of the moving strip by powerful water jets delivered by spray bars placed at a short distance and provided with injection nozzles fed under high pressure, typically above 130-150 bars, or even more than 200 bars in some cases. It is thus intended to combine a thermal effect (the surface temperature of the strip, around 1100 ° C. at the inlet of the descaling, drops almost instantaneously to nearly 600 ° C.) with a mechanical effect due to the large quantity of movement of water jets at impact to crack the scale and eliminate the surface by the effect of hunting.
- a thermal effect the surface temperature of the strip, around 1100 ° C. at the inlet of the descaling, drops almost instantaneously to nearly 600 ° C.
- This operation is conventionally carried out in a descaling box, about 1 to 2 m long, placed some 5 m upstream of the finishing cages, crossed by the steel strip in rapid rectilinear scrolling and sheltering the upper irrigation booms and lower ones with nozzles inclined counter-current of about ten degrees.
- the object of the invention is to provide an immediately operational response to the question of reducing the costs of the secondary descaling operation, that is to say a response compatible with a simple reorganization of existing equipment, so without necessarily involve the relocation of a new complete secondary descaling equipment.
- the subject of the invention is a method for the secondary descaling of metal strips, in particular steel, in scrolling during their hot rolling by spraying water at their surface by means of watering ramps.
- nozzles fed with pressurized water characterized in that the nozzles are fed under low hydraulic pressure, not exceeding 30 bars (and preferably below 10 bars, but not less than about 3 bars), and that, in order to ensure a thermal effect of the water sprayed on the surface to be de-scaled quantitatively similar to the thermal effect obtained with the known method of known secondary descaling at high pressure (ie a cooling of the band which lowers the temperature of its oxidized surface at 600 ° C.), the said nozzles are dimensioned so that they deliver a surface water flow rate on the strip similar to the surface water flow delivered by the said high-press method. ion.
- the surface water flow rate is greater than 2500 l / min / m 2 and advantageously 7500 l / min / m 2 .
- the invention also relates to a method of secondary descaling of metal strips, in particular steel, in scrolling during their hot rolling by spraying water at their surface using nozzle irrigation booms fed with water under pressure, characterized in that the nozzles are fed under low hydraulic pressure, not exceeding 30 bars, and in that, in order to ensure a thermal effect of the water sprayed on the surface to be descaled quantitatively similar to the thermal effect obtained with the usual known high-pressure secondary descaling method, said nozzles are adjusted so that the density of the heat flux extracted from the band (EfF) resulting from the cooling of its surface by the projected water is similar to that performed with said known practice at high pressure.
- the heat flux density extracted from the (HF) band is between 6.5 and 20 MW / m 2 for a strip temperature between 900 and 1100 ° C.
- the heat flux density is between 10 and 11 MW / m 2 for a strip temperature between 900 and 1100 ° C.
- the process according to the invention can also comprise different characteristics, taken alone or in combination: the nozzles are fed with a hydraulic pressure of less than 10 bars, without however going down below 3 bars,
- the process of the invention is carried out upstream of the finishing stands of a hot rolling mill of steel strips,
- the process of the invention is carried out upstream of the roughing cages of a hot rolling mill of steel strips.
- the invention also relates to a secondary descaling equipment for moving metal strips, in particular steel strips, comprising watering ramps provided with water jet nozzles on the surface of the strip, characterized in that it comprises a "low pressure" water supply unit of said nozzles of the watering ramps.
- the invention is based on the discovery that it is even more the thermal effect of the jets of water on the cooling of the oxide crust which acts in favor of the secondary descaling that their mechanical effect on the fragmentation of this oxide crust on the surface of the strip, or, in other words, the effect of "high-pressure cleaning" of the powerful jets on their impact, as previously thought.
- thermo effect of cooling and “thermal efficiency” are equivalent. They express the fact that, during the brief residence time of the strip in the descaling box (of the order of one second only), it is a question of ensuring a fall of the temperature of the oxide layer up to about 600 0 C, whatever its temperature at the entrance of this box. It is known that the underlying physical quantity, and ordinarily measurable on a rolling train, is the extracted caloric flux density.
- FIG. 1 is a plot of curves, called boiling curves, resulting from the experiment and showing, as a function of the surface temperature of the strip, the comparative thermal efficiency of a secondary descaling before entry to the finisher conducted with different projected water hydraulic pressures. This thermal efficiency is quantitatively translated in ordinate by the surface density of extracted heat flux (HF), given in MW / m2 of metal strip surface;
- HF extracted heat flux
- FIG. 2 shows the efficiency of this secondary descaling, in terms of the residual thickness of the calamine layer in microns (e c ) in a surface temperature range of the descaled steel strip (900-1050 ° C. ) deliberately chosen according to the inlet temperatures in the finishing cages.
- the reference curve is curve A.
- This curve A results from a conventional secondary descaling carried out using powerful water jets coming from nozzles fed at 130 bars of pressure.
- the other two curves B and C are representative of "low pressure" jets of 8 bars each, one (curve B) resulting from tests carried out with a flow rate of water equal to that of the curve A to jets "high pressure", namely 7,500 l / min / m 2 , the other, curve C, resulting from tests conducted with a significantly lower surface flow rate: 1500 1 / min / m 2 .
- the criterion for setting a successful "low pressure” secondary descaling according to the invention lies in the maintenance in the oxide layer of a thermal effect similar to that conventionally achieved with jets "high pressure” (curve A). This must ultimately result in a drop in the temperature of the blank 20 to 100 0 C (depending on the grade of steel to be rolled) between its entry into the watering box (typically about 1100 0 C for a carbon steel for example) and its entry into the finishing cages of the mill (typically 1030 0 C approximately).
- This thermal effect which is thus expressed by a high rate of momentary cooling of the surface of the strip (several hundred degrees / sec) has been expressed, for the parameterization of the three curves of the graph, by a classically accessible physical quantity. from the measurement, namely the density of heat flux extracted from the product being rolled by the projected water (Heat Flux in English abbreviated, or HF), magnitude expressed in MW / m 2 .
- this characteristic quantity is particularly suitable for dimensioning a plant.
- the descaling because it is correlated to the cooling water flow rate per m 2 of strip (the surface water flow), which is a parameter that can easily be obtained from the definition of the operation of the descaling: schematically, at a value of HF corresponds a surface flow rate of cooling water.
- the HF of the "High Pressure" descaling of reference (curve A) was kept constant around 10 MW / m 2 all along the watering operation (surface temperature ranging from 1100 to 600 0 C).
- Those of the "low pressure" descaling according to the invention were maintained respectively over the same temperature range between 10 and 18 MW / m 2 in the experimental case representative of curve B and between 6 and 10 MW / m 2 for the case. of curve C.
- the HF value is actually calculated from data specific to each descaling equipment that are, to mention only the most important, the temperature of the cooling water (here at 20 0 C for all tests) , the type of projection nozzles, the water outlet pressure of these nozzles, the distance separating the nozzle nose of the surface of the band to be descaled, as well as the opening angle of the jet at the outlet of the nozzle.
- the low-pressure curve C which displays a significantly lower HF (slightly less than 7 MW / m 2 ), reflects a correlatively lower quality of descaling.
- the descaling according to the invention can be carried out for a heat flux density extracted from the product of between 6.5 and 20 MW / m 2 and, when referring to the flow rate of surface water, for a flow rate higher than 2500 l / min / m2.
- the required HF levels (of the order of 10 MW / m 2 ) could no longer be achieved, except to multiply the watering ramps, but with the risk nevertheless of not being to be able to ensure the thermal contraction effect of the oxide crust necessary for its unhooking of the metal support surface.
- the invention can be easily implemented by operating with pumps supplied at low pressure, thereby saving energy and reducing maintenance costs, provided that the conformation of the nozzles is adapted as necessary. to ensure a flow of surface water equivalent to that which would have been practiced in high pressure configuration.
- nozzles used for the implementation of the method of the invention will be arranged at the same distance from the strip as the distance applied during the known descaling process at high pressure.
- Other additional advantages of using low pressure ramps in place of high pressure to achieve secondary descaling will be noted, such as:
- the invention can not be limited to the examples described above, but applies to multiple variants and equivalents.
- it is recalled that it relates to any form of secondary descaling, that is to say removal of calamine previously formed by hot oxidation of a metal surface in contact with the ambient air.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08843858.5A EP2185747B1 (fr) | 2007-08-21 | 2008-08-20 | Procéde et equipment de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique |
| PL08843858T PL2185747T3 (pl) | 2007-08-21 | 2008-08-20 | Sposób i urządzenie do usuwania zgorzeliny wtórnej z pasów metalowych przez natryskiwanie wody pod niskim ciśnieniem hydraulicznym |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07291027A EP2028290A1 (fr) | 2007-08-21 | 2007-08-21 | Procédé et équipement de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique |
| EP08843858.5A EP2185747B1 (fr) | 2007-08-21 | 2008-08-20 | Procéde et equipment de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique |
| PCT/FR2008/001200 WO2009056712A2 (fr) | 2007-08-21 | 2008-08-20 | Procede et equipment de decalaminage secondaire des bandes metalliques par projection d' eau a basse pression hydraulique2 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2185747A2 true EP2185747A2 (fr) | 2010-05-19 |
| EP2185747B1 EP2185747B1 (fr) | 2016-12-21 |
Family
ID=39002981
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07291027A Withdrawn EP2028290A1 (fr) | 2007-08-21 | 2007-08-21 | Procédé et équipement de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique |
| EP08843858.5A Active EP2185747B1 (fr) | 2007-08-21 | 2008-08-20 | Procéde et equipment de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07291027A Withdrawn EP2028290A1 (fr) | 2007-08-21 | 2007-08-21 | Procédé et équipement de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US10378115B2 (fr) |
| EP (2) | EP2028290A1 (fr) |
| JP (1) | JP5150888B2 (fr) |
| KR (1) | KR101240100B1 (fr) |
| CN (1) | CN101821429B (fr) |
| AU (1) | AU2008320723B2 (fr) |
| BR (1) | BRPI0815716B1 (fr) |
| ES (1) | ES2618498T3 (fr) |
| MX (1) | MX2010001998A (fr) |
| PL (1) | PL2185747T3 (fr) |
| RU (1) | RU2441725C2 (fr) |
| UA (1) | UA97853C2 (fr) |
| WO (1) | WO2009056712A2 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5136609B2 (ja) | 2010-07-29 | 2013-02-06 | Jfeスチール株式会社 | 成形性および耐衝撃性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
| DE102012214298B4 (de) | 2012-08-10 | 2025-02-27 | Sms Group Gmbh | Verfahren zur Reinigung und/oder Entzunderung einer Bramme oder eines Vorbandes mittels eines Zunderwäschers und Zunderwäscher |
| FR3024058B1 (fr) * | 2014-07-23 | 2016-07-15 | Constellium France | Procede et equipement de refroidissement |
| CN112139335B (zh) * | 2020-09-09 | 2022-02-01 | 山东钢铁集团日照有限公司 | 一种高耐蚀易焊接热压零部件的制备方法 |
| CN113751410B (zh) | 2021-09-14 | 2022-07-22 | 山东钢铁集团日照有限公司 | 一种高耐蚀易焊接热压零部件的热浴成形工艺 |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3054162A (en) * | 1957-02-16 | 1962-09-18 | August Seuthe Maschf | Method and apparatus for descaling strip material, especially strip iron |
| US3174491A (en) * | 1963-10-23 | 1965-03-23 | Kolene Corp | Molten salt spray apparatus for descaling stainless steel |
| NL131553C (fr) * | 1965-05-28 | 1900-01-01 | ||
| US3779054A (en) | 1972-03-02 | 1973-12-18 | Wean United Inc | Coolant control for hot strip mill |
| JPS5831247B2 (ja) | 1980-12-17 | 1983-07-05 | 株式会社神戸製鋼所 | 熱間圧延鋼板のデスケ−リング装置 |
| US4507949A (en) * | 1982-02-12 | 1985-04-02 | Republic Steel Corporation | Apparatus for cooling a hot-rolled product |
| JPS5976615A (ja) * | 1982-10-25 | 1984-05-01 | Nippon Steel Corp | 鋼材の低圧デスケーリング方法 |
| JPS6061114A (ja) | 1983-09-13 | 1985-04-08 | Sumitomo Metal Ind Ltd | 快削鋼の圧延方法 |
| JPS60184409A (ja) * | 1984-03-02 | 1985-09-19 | Sumitomo Metal Ind Ltd | 継目無鋼管の定型圧延方法 |
| US4617815A (en) | 1984-12-24 | 1986-10-21 | Wean United, Inc. | Apparatus for descaling hot strip in a rolling mill |
| JPS61269925A (ja) * | 1985-05-24 | 1986-11-29 | Kawasaki Steel Corp | 熱間圧延におけるスケ−ル除去方法 |
| JP2585529B2 (ja) * | 1986-04-14 | 1997-02-26 | 株式会社日立製作所 | 高温の薄板鋳片を減厚圧延する方法及び装置 |
| JPH0763751B2 (ja) * | 1987-01-24 | 1995-07-12 | 株式会社日立製作所 | 熱間圧延ライン |
| JPH07115060B2 (ja) | 1992-01-07 | 1995-12-13 | 新日本製鐵株式会社 | 鋼材の脱スケール方法 |
| ES2108170T3 (es) | 1992-07-31 | 1997-12-16 | Danieli Off Mecc | Dispositivo de descascarillado que emplea agua. |
| US5272798A (en) * | 1992-08-05 | 1993-12-28 | Kolene Corporation | Method and apparatus for descaling metal strip |
| JPH07171610A (ja) | 1993-10-26 | 1995-07-11 | Sumitomo Metal Ind Ltd | 熱延鋼板の圧延方法および圧延装置 |
| JP2897652B2 (ja) | 1994-09-05 | 1999-05-31 | 住友金属工業株式会社 | マンドレルミルおよびそれを用いた管圧延方法 |
| AUPM826394A0 (en) * | 1994-09-20 | 1994-10-13 | Bhp Steel (Jla) Pty Limited | Descaling metal strip |
| JP3390584B2 (ja) * | 1995-08-31 | 2003-03-24 | 川崎製鉄株式会社 | 熱延鋼板およびその製造方法 |
| US6210501B1 (en) * | 1995-10-11 | 2001-04-03 | Nisshin Steel Co., Ltd. | Heavy-duty cold-rolling for mechanically descaling a hot-rolled steel strip before pickling |
| JP3094911B2 (ja) | 1996-04-11 | 2000-10-03 | 住友金属工業株式会社 | 熱間圧延鋼板のデスケーリング方法 |
| JPH10128425A (ja) * | 1996-10-31 | 1998-05-19 | Nippon Steel Corp | デスケーリング方法 |
| JPH1147820A (ja) * | 1997-08-04 | 1999-02-23 | Nireco Corp | スラブ切断面ディスケール装置とこれを用いたディスケール/マーキング装置 |
| KR100476577B1 (ko) | 1999-01-26 | 2005-03-18 | 닛폰 스틸 가부시키가이샤 | 금속재료의 스케일제거, 억제방법 및 장치 |
| JP2000246325A (ja) * | 1999-02-24 | 2000-09-12 | Mitsubishi Heavy Ind Ltd | 熱間圧延におけるスケール疵防止装置及び防止方法 |
| DE19938705A1 (de) * | 1999-08-14 | 2001-02-15 | Sms Demag Ag | Entzunderungsvorrichtung für ein stranggegossenes Metallband |
| JP3491605B2 (ja) | 2000-07-14 | 2004-01-26 | 住友金属工業株式会社 | 表面性状に優れた熱延鋼板の製造方法および設備 |
| DE10110324A1 (de) * | 2001-03-03 | 2002-09-05 | Sms Demag Ag | Verfahren zum Entzundern von Bändern |
| DE10143868A1 (de) * | 2001-09-07 | 2003-03-27 | Sms Demag Ag | Brammenreinigung vor dem Rollenherdofen einer Mini-Mill |
| DE10146113A1 (de) | 2001-09-19 | 2003-04-03 | Sms Demag Ag | Spritzbalken für eine hydraulische Entzunderungsanlage |
-
2007
- 2007-08-21 EP EP07291027A patent/EP2028290A1/fr not_active Withdrawn
-
2008
- 2008-08-20 US US12/674,165 patent/US10378115B2/en active Active
- 2008-08-20 KR KR1020107006056A patent/KR101240100B1/ko active Active
- 2008-08-20 CN CN2008801096273A patent/CN101821429B/zh active Active
- 2008-08-20 ES ES08843858.5T patent/ES2618498T3/es active Active
- 2008-08-20 UA UAA201003056A patent/UA97853C2/ru unknown
- 2008-08-20 AU AU2008320723A patent/AU2008320723B2/en not_active Ceased
- 2008-08-20 WO PCT/FR2008/001200 patent/WO2009056712A2/fr not_active Ceased
- 2008-08-20 MX MX2010001998A patent/MX2010001998A/es active IP Right Grant
- 2008-08-20 JP JP2010525383A patent/JP5150888B2/ja active Active
- 2008-08-20 EP EP08843858.5A patent/EP2185747B1/fr active Active
- 2008-08-20 BR BRPI0815716-2A patent/BRPI0815716B1/pt active IP Right Grant
- 2008-08-20 PL PL08843858T patent/PL2185747T3/pl unknown
- 2008-08-20 RU RU2010110616/02A patent/RU2441725C2/ru active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009056712A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2010001998A (es) | 2010-05-27 |
| AU2008320723A1 (en) | 2009-05-07 |
| ES2618498T3 (es) | 2017-06-21 |
| KR20100058573A (ko) | 2010-06-03 |
| JP2010536581A (ja) | 2010-12-02 |
| US10378115B2 (en) | 2019-08-13 |
| BRPI0815716B1 (pt) | 2021-03-30 |
| CN101821429B (zh) | 2012-05-30 |
| BRPI0815716A2 (pt) | 2015-02-10 |
| RU2441725C2 (ru) | 2012-02-10 |
| KR101240100B1 (ko) | 2013-03-07 |
| JP5150888B2 (ja) | 2013-02-27 |
| UA97853C2 (ru) | 2012-03-26 |
| WO2009056712A2 (fr) | 2009-05-07 |
| AU2008320723B2 (en) | 2012-03-29 |
| RU2010110616A (ru) | 2011-09-27 |
| CN101821429A (zh) | 2010-09-01 |
| WO2009056712A8 (fr) | 2010-03-18 |
| WO2009056712A3 (fr) | 2009-07-16 |
| US20110146706A1 (en) | 2011-06-23 |
| PL2185747T3 (pl) | 2017-06-30 |
| EP2028290A1 (fr) | 2009-02-25 |
| EP2185747B1 (fr) | 2016-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2185747B1 (fr) | Procéde et equipment de décalaminage secondaire des bandes métalliques par projection d'eau à basse pression hydraulique | |
| EP1058588B1 (fr) | Installation de fabrication de bandes d'acier inoxydable laminees a froid | |
| EP1228254B1 (fr) | Procede de fabrication de bandes d'acier au carbone, notamment d'acier pour emballages | |
| FR2498092A1 (fr) | Installation pour le laminage direct d'une piece coulee en acier et production a partir de ladite piece d'un produit fini en acier | |
| EP0046423B2 (fr) | Procédé de laminage écrouissant à taux réglé pour bandes d'aciers doux recuites sous cloches | |
| JP5758970B2 (ja) | スラブのインライン表面処理のための方法および装置 | |
| JP2013517138A5 (fr) | ||
| CA2907632C (fr) | Systeme de pre-refroidissement avec reglage interne pilote | |
| JP5064934B2 (ja) | スケール剥離性に優れたSi、Cr含有条鋼材の製造方法 | |
| RU2344010C2 (ru) | Способ прокатки сортовых профилей | |
| JP4764135B2 (ja) | 鋼材のメカニカルデスケーリング方法 | |
| EP1266041A1 (fr) | Procede pour la fabrication d'une bande en acier multiphase laminee a chaud. | |
| CH269520A (fr) | Procédé pour le revêtement d'objets en métal par des couches d'un métal différent. | |
| EP1300477A1 (fr) | Procédé de recuit continu pour l'obtention d'un état de surface améliorée | |
| JP2002316206A (ja) | 表面性状の優れた形鋼と該形鋼用の鋼材およびそれらの製造方法と製造装置 | |
| LU86201A1 (fr) | Procede de laminage controle d'un produit epais | |
| JP2003200210A (ja) | 表面性状に優れた熱延鋼帯の製造方法 | |
| FR2648825A1 (fr) | Procede et installation de traitement d'une peau d'animal | |
| BE460087A (fr) | ||
| BE419483A (fr) | ||
| BE885763A (fr) | Perfectionnements aux procedes de refroidissement continu de fil machine en acier a bas carbone | |
| FR2712305A1 (fr) | Bandes étroites en acier à haute teneur en carbone et procédé de fabrication de ce type de bandes. | |
| FR2505362A1 (fr) | Procede de traitement thermique d'un article metallique de grande longueur, dispositif pour sa mise en oeuvre et article traite conformement audit procede |
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: 20100322 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MATET, PATRICE Inventor name: MIALOT, SYLVAIN Inventor name: BOREAN, JEAN-LUC Inventor name: LEBLANC, VALERIE Inventor name: DUSSART, GILLES Inventor name: MIKLER, NATHALIE |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ARCELORMITTAL |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20160713 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MATET, PATRICE Inventor name: LEBLANC, VALERIE Inventor name: MIALOT, SYLVAIN Inventor name: MIKLER, NATHALIE Inventor name: DUSSART, GILLES Inventor name: BOREAN, JEAN-LUC |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| 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 HR HU IE IS IT LI LT LU LV MC MT NL NO 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: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 855602 Country of ref document: AT Kind code of ref document: T Effective date: 20170115 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602008048045 Country of ref document: DE |
|
| 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: 20161221 |
|
| REG | Reference to a national code |
Ref country code: RO Ref legal event code: EPE |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
| REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161221 Ref country code: NO 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: 20170321 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: 20170322 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: 20161221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR 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: 20161221 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2618498 Country of ref document: ES Kind code of ref document: T3 Effective date: 20170621 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
| 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: 20170421 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: 20161221 |
|
| 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: 20170421 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: 20170321 |
|
| REG | Reference to a national code |
Ref country code: SK Ref legal event code: T3 Ref document number: E 23623 Country of ref document: SK |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602008048045 Country of ref document: DE |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20170922 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20161221 |
|
| 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: 20161221 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170831 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
| 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: 20170820 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
| 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 NON-PAYMENT OF DUE FEES Effective date: 20170820 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT 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: 20161221 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: UEP Ref document number: 855602 Country of ref document: AT Kind code of ref document: T Effective date: 20161221 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20080820 |
|
| 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 NON-PAYMENT OF DUE FEES Effective date: 20161221 |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230427 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20240723 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20240724 Year of fee payment: 17 Ref country code: DE Payment date: 20240723 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20240723 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20240723 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20240723 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20240902 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CZ Payment date: 20240726 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20240725 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PL Payment date: 20240726 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SK Payment date: 20240726 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: RO Payment date: 20240801 Year of fee payment: 17 Ref country code: IT Payment date: 20240723 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20240729 Year of fee payment: 17 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602008048045 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20250901 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20250820 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20250820 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20250820 |
|
| REG | Reference to a national code |
Ref country code: SK Ref legal event code: MM4A Ref document number: E 23623 Country of ref document: SK Effective date: 20250820 Ref country code: AT Ref legal event code: MM01 Ref document number: 855602 Country of ref document: AT Kind code of ref document: T Effective date: 20250820 |