EP2188399B2 - Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation - Google Patents

Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation Download PDF

Info

Publication number
EP2188399B2
EP2188399B2 EP08829848.4A EP08829848A EP2188399B2 EP 2188399 B2 EP2188399 B2 EP 2188399B2 EP 08829848 A EP08829848 A EP 08829848A EP 2188399 B2 EP2188399 B2 EP 2188399B2
Authority
EP
European Patent Office
Prior art keywords
oxidation
strip
medium
oxidizing medium
furnace
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.)
Active
Application number
EP08829848.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2188399A1 (fr
EP2188399B1 (fr
Inventor
Pierre-Jérôme BORREL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies USA LLC
Original Assignee
Primetals Technologies USA LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39384792&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2188399(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Primetals Technologies USA LLC filed Critical Primetals Technologies USA LLC
Publication of EP2188399A1 publication Critical patent/EP2188399A1/fr
Application granted granted Critical
Publication of EP2188399B1 publication Critical patent/EP2188399B1/fr
Publication of EP2188399B2 publication Critical patent/EP2188399B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29—Cooling or quenching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/068—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by radiant tubes, the tube being heated by a hot medium, e.g. hot gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work

Definitions

  • the invention relates to the continuous galvanizing of steel strips, in particular AHSS, with high silicon, manganese and aluminum contents and, in particular, to installations comprising a radiant tube furnace without a direct flame heating zone.
  • the patent JP 02-285057 describes an oxidation phase between 400 and 700°C in a slightly oxidizing atmosphere then a reduction phase between 600 and 800°C in a reducing atmosphere, it indicates temperature ranges and the composition of the gases (contents of O2, N2 and H2 ).
  • the patent EP 1 285 972 describes the same principle. These two patents, however, remain very general and do not clearly reveal the practical means of controlling the reactions.
  • the patent EP 1 457 580 describes an installation making it possible to carry out the oxidation phase in a specific enclosure where the strip is heated by induction or combustion of a gas, in an oxidizing atmosphere, between 100 and 400°C.
  • the patent US 3,936,543 describes an annealing furnace operation aimed not at the specific coating of AHSS steels but making it possible to avoid the use of cleaning fluxes during galvanizing thanks to the oxidation then the surface reduction of carbon steel strips.
  • the annealing furnace preceding the galvanizing bath is a conventional furnace comprising a direct flame heating zone (DFF) and a radiant tube temperature holding zone (RTF).
  • DFF direct flame heating zone
  • RTF radiant tube temperature holding zone
  • the reduction is obtained in the RTF zone which comprises at least 5% hydrogen, the remainder being nitrogen.
  • the patent WO 2005/017214 offers two options for solving the problem. The first consists in using a direct flame combustion chamber separated from the RTF annealing furnace and from which the burnt gases are collected in order to inject them into the furnace. The second is to install a direct flame burner in an area of the oven enclosure. In both cases, the burnt gases provide the necessary oxidizing atmosphere under composition conditions that obviously depend on the temperature of the strip and that of the gases. The reduction is then conventionally obtained by passage through a mixture of nitrogen and hydrogen.
  • the invention consists in injecting an oxidizing medium into a section of a furnace with radiant tubes, in particular with a nitrogen/hydrogen atmosphere, using one or more tubes, in particular specially modified and capable of being installed in place and place of any of the existing tubes.
  • this injection can be carried out in any section of the furnace, preferably in the preheating section.
  • the medium must present, depending on the temperature of the strip and the chemical composition of the latter, a dew point such that the alloying elements such as silicon, manganese, aluminum, chromium are oxidized in depth and no longer have the possibility of migrating to the surface.
  • this dew point is above -20°C.
  • the injected medium can be water vapor or air or a mixture rich in oxygen. It can also be the product resulting from the combustion of an over-stoichiometric air or super-oxygenated air or oxygen/fuel mixture in a burner.
  • Control of this selective oxidation preferably involves measuring the dew point in the zone(s) in which the modified tube(s) are installed. This measurement can be carried out by dew point transmitters installed in a fixed position and operating in a closed loop with the members for adjusting the flow rate of the oxidizing medium injected by the oxidizing medium injectors and/or adjusting the burners.
  • the invention also presents an associated device for its implementation of said method and ensuring the organization, in a preheating section and/or a holding section of a continuous galvanizing annealing furnace for steel strips equipped only radiant tubes, with at least one oxidation zone aimed at preventing the selective oxidation of steel alloy elements, by injecting an oxidizing medium into the oxidation zone, characterized in that it comprises at least one tube comprising at least one branch provided with calibrated holes allowing the oxidizing medium to pass into the oxidation zone.
  • the means for introducing the oxidizing medium can be either an injector supplying the tube with a hot oxidizing medium such as steam, air or an oxygen-rich gas, or a burner supplying the tube into a product resulting from the combustion of an over-stoichimetric air/fuel mixture, a stoichiometric super-oxygenated air/fuel mixture or a stoichiometric air/oxygenated fuel mixture within the non-explosive limit.
  • a hot oxidizing medium such as steam, air or an oxygen-rich gas
  • the modified tube(s) intended to supply the oxidizing medium necessary for the oxidation of the strip is (are), for example, a U-shaped tube, one inlet branch of which is equipped at its end with a device for injecting water vapor or air, preheated or not, super-oxygenated or not, or oxygen and whose branch opposite the inlet branch is closed at its end, at least one of the branches preferably the branch opposite to the input branch, is pierced with calibrated holes allowing said medium to pass.
  • the U-tube can be replaced by any conventional tube shape such as, for example, a P-shape, double-P shape, W-shape or thimble shape.
  • the radiant tube intended to supply the oxidizing medium is a P-shaped tube having an inlet branch equipped at its end with a burner and of which at least one of the branches, preferably the opposite branch at the inlet branch, is pierced with calibrated holes allowing the burnt gases to pass into the enclosure of the furnace.
  • the branch opposite the inlet branch comprising the burner can allow part of the burnt gases to evacuate outside the furnace through a calibrated orifice or comprise a heat exchanger device making it possible to preheat the combustion air with the burnt gases.
  • the P-tube can be replaced by any conventional tube shape such as, for example, a U-shape, W-shape, double-P shape or glove finger shape.
  • the burner(s) are supplied with an over-stoichiometric air/fuel mixture or a stoichiometric super-oxygenated air/fuel mixture or a stoichiometric air/oxygenated fuel mixture within the non-explosive limits.
  • Tubes equipped with burner or injector, whatever their type, are directly interchangeable with existing ones. They can be installed on demand depending on the temperature chosen for oxidation or be permanently installed at different points in the furnace. In this case, they are activated according to the choice of the temperature at which it is desired to oxidize the strip, therefore the position of the tube in the oven.
  • Another advantage of the process is to locate the injection of oxidizing medium exactly where it is needed, that is to say very close to the two sides of the steel strip and to be able to take advantage of the local effect of turbulence in contact with the band which favors the reactions between the medium and the band.
  • the heating in particular in the preheating 61 and holding 62 sections of the oven 6 is obtained by means of radiant tubes.
  • a radiant tube 2, in P is installed in the enclosure 1 of a galvanizing annealing furnace, for example a preheating or holding section. It is assembled by a support 5 and a plate 4.
  • a burner 3 supplied with fuel and combustion air is arranged at the end of the inlet branch 2a of the tube 2 and delivers high temperature burnt gases into the tube. .
  • burnt gases are essentially diffused in the enclosure 1 using calibrated holes 6 made in the branch 2b of the tube, opposite the inlet branch 2a. This branch 2b is closed off at its end so that some of the burnt gases recirculate in the tube.
  • the branch 2b of the tube 2 in P opposite the burner 3 is equipped with a calibrated or adjustable device 7 making it possible to evacuate part of the burnt gases to the outside of the furnace.
  • the branch 2b of the P-tube opposite the burner 3 is equipped with a heating device 8, 9 of the combustion air by the burnt gases.
  • the radiant tube can be of the double P type as shown in figure 6 .
  • the burner 3 is arranged in the open end of the central inlet branch 2a of the tube 2.
  • the holes 6 are then preferably made in each of the opposite branches 2b located on either side of the central branch 2a.
  • a U-tube 2 is installed in the enclosure 1 of a galvanizing annealing furnace. It is assembled by a support 5 and a plate 4.
  • An injector 10 supplied with oxidizing gas under pressure such as steam, air or a mixture rich in oxygen delivers into the tube 2 a mixture of oxidizing gases and high temperature HNx mixture present in the furnace enclosure. This mixture is diffused in the enclosure 1 using calibrated holes 6 provided in the branch 2b opposite the inlet branch 2a. The end of branch 2b opposite to inlet branch 2a comprising the injector is closed off by a plug 11.
  • the radiant tube 2 can be of the double P type similar to that described in figure 6 , the burner being replaced by an injector 10.
  • the injectors are static devices requiring no other energy than that of the fluid which are moreover always available in metallurgical sites, water vapor under pressures of 8 to 10 bars.
  • the expansion energy in the enclosure of the oven leads to a stirring and circulation effect which avoids the use of fans. The energy cost of the process is therefore very limited.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP08829848.4A 2007-09-03 2008-07-04 Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation Active EP2188399B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0757331A FR2920439B1 (fr) 2007-09-03 2007-09-03 Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation
PCT/FR2008/000981 WO2009030823A1 (fr) 2007-09-03 2008-07-04 Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation

Publications (3)

Publication Number Publication Date
EP2188399A1 EP2188399A1 (fr) 2010-05-26
EP2188399B1 EP2188399B1 (fr) 2013-08-28
EP2188399B2 true EP2188399B2 (fr) 2023-05-03

Family

ID=39384792

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08829848.4A Active EP2188399B2 (fr) 2007-09-03 2008-07-04 Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation

Country Status (6)

Country Link
US (1) US8609192B2 (zh)
EP (1) EP2188399B2 (zh)
JP (1) JP2010538163A (zh)
CN (1) CN101796203B (zh)
FR (1) FR2920439B1 (zh)
WO (1) WO2009030823A1 (zh)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008009065U1 (de) 2008-07-04 2008-10-09 WS Wärmeprozesstechnik GmbH Strahlungsheizanordnung mit Verzugkompensation
AT508264B1 (de) * 2009-10-13 2010-12-15 Ebner Ind Ofenbau Vorrichtung zur wärmebehandlung von blechbändern
EP2513582B1 (fr) * 2009-12-15 2018-05-02 Primetals Technologies France SAS Installation de préchauffage d'une bande d'acier en défilement continu
ES2425916T3 (es) * 2010-11-30 2013-10-18 Tata Steel Uk Limited Método para galvanizar una banda de acero en una línea de galvanización en caliente de templado continuo
DE102011050243A1 (de) 2011-05-10 2012-11-15 Thyssenkrupp Steel Europe Ag Vorrichtung und Verfahren zum im Durchlauf erfolgenden Behandeln eines Stahlflachprodukts
DE102011051731B4 (de) 2011-07-11 2013-01-24 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines durch Schmelztauchbeschichten mit einer metallischen Schutzschicht versehenen Stahlflachprodukts
RU2608257C2 (ru) * 2011-07-15 2017-01-17 Тата Стил Эймейден Бв Устройство для производства отожженных сортов стали и способ для производства упомянутых сортов стали
DE102011056823A1 (de) 2011-12-21 2013-06-27 Thyssen Krupp Steel Europe AG Düseneinrichtung für einen Ofen zum Wärmebehandeln eines Stahlflachprodukts und mit einer solchen Düseneinrichtung ausgestatteter Ofen
JP5365760B1 (ja) * 2012-04-06 2013-12-11 Ｊｆｅスチール株式会社 連続式溶融亜鉛めっき設備
EP2687611A1 (en) * 2012-07-17 2014-01-22 Linde Aktiengesellschaft Method and apparatus for controlling surface porosity of metal materials
DE102013105378B3 (de) * 2013-05-24 2014-08-28 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines durch Schmelztauchbeschichten mit einer metallischen Schutzschicht versehenen Stahlflachprodukts und Durchlaufofen für eine Schmelztauchbeschichtungsanlage
ES2851199T3 (es) 2013-07-03 2021-09-03 Outokumpu Nirosta Gmbh Procedimiento para recubrir productos planos de acero con una capa protectora metálica
CN103849825B (zh) * 2014-03-05 2016-03-02 首钢总公司 一种连续热镀锌线柔性预氧化装置及方法
DE102014109943B3 (de) 2014-07-16 2015-11-05 Thyssenkrupp Ag Stahlprodukt mit einer Korrosionsschutzbeschichtung aus einer Aluminiumlegierung sowie Verfahren zu dessen Herstellung
EP3173495A1 (en) * 2015-11-25 2017-05-31 Cockerill Maintenance & Ingenierie S.A. Method and device for reaction control
CN107532227B (zh) * 2015-05-07 2020-01-10 考克利尔维修工程 反应控制的方法和装置
FR3046423B1 (fr) 2015-12-30 2018-04-13 Fives Stein Dispositif et procede pour realiser une oxydation controlee de bandes metalliques dans un four de traitement en continu
CN106282903B (zh) * 2016-09-12 2018-11-30 西北师范大学 火焰法制备块状纳米氧化铁涂层的工艺
CN106637048A (zh) * 2016-12-29 2017-05-10 常州大学 一种低露点下选择性氧化薄膜的制备方法
CN106755797A (zh) * 2017-03-10 2017-05-31 江苏伟建工具科技有限公司 一种高速钢对流冷却退火管
CN106801138A (zh) * 2017-03-10 2017-06-06 江苏伟建工具科技有限公司 一种高速钢退火管
CN107354424B (zh) * 2017-08-08 2019-10-11 常州大学 一种抑制高强钢钢板表面选择性氧化的蒸镀锌预处理工艺
BE1026986B1 (fr) * 2019-01-23 2020-08-25 Drever Int S A Procédé et four pour le traitement thermique d’une bande d’acier de haute résistance comprenant une chambre d’homogénéisation en température
IT202000013879A1 (it) 2020-06-10 2021-12-10 Tenova Spa Gruppo bruciatore a fiamma libera per forni per il trattamento termo-chimico di nastri d’acciaio in impianti per la zincatura a caldo continua.
CN115404424A (zh) * 2022-08-16 2022-11-29 包头钢铁（集团）有限责任公司 一种热镀锌钢带表面山水画缺陷的控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214712A (ja) † 1982-06-07 1983-12-14 Daido Steel Co Ltd 加熱炉
US6902829B2 (en) † 2001-11-15 2005-06-07 Isg Technologies Inc. Coated steel alloy product
EP1936000A1 (en) † 2005-10-14 2008-06-25 Nippon Steel Corporation Method of continuous annealing/hot-dipping of steel sheet containing silicon and apparatus for continuous annealing/hot-dipping

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936543A (en) 1974-08-22 1976-02-03 Armco Steel Corporation Method of coating carbon steel
JPS58151417A (ja) * 1982-02-27 1983-09-08 Sumitomo Metal Ind Ltd 加熱炉
JPH0645867B2 (ja) * 1984-05-29 1994-06-15 大同特殊鋼株式会社 雰囲気熱処理制御装置
JPH0623605B2 (ja) 1987-05-26 1994-03-30 日本ファーネス工業株式会社 ラジアントチューブバーナ
JPH02285057A (ja) 1989-04-27 1990-11-22 Sumitomo Metal Ind Ltd 溶融亜鉛めっき用鋼板の連続焼鈍方法
DE4339675C1 (de) * 1993-11-22 1995-05-04 Messer Griesheim Gmbh Verfahren und Vorrichtung zum Einschmelzen von festen Verbrennungsrückständen
US5772428A (en) * 1996-02-09 1998-06-30 Praxair Technology, Inc. Method and apparatus for heat treatment including H2 /H2 O furnace region control
AT405944B (de) * 1996-04-19 1999-12-27 Holderbank Financ Glarus Verfahren zum reduzieren von oxidischen schlacken
JPH10185131A (ja) * 1996-12-24 1998-07-14 Tokyo Gas Co Ltd ラジアントチューブ加熱装置と加熱炉
FR2828888B1 (fr) * 2001-08-21 2003-12-12 Stein Heurtey Procede de galvanisation a chaud de bandes metalliques d'aciers a haute resistance
JP4168667B2 (ja) 2002-05-30 2008-10-22 Ｊｆｅスチール株式会社 連続溶融亜鉛めっき用インライン焼鈍炉
FR2852330B1 (fr) 2003-03-12 2007-05-11 Stein Heurtey Procede d'oxydation controlee de bandes avant galvanisation en continu et ligne de galvanisation
JP4192051B2 (ja) 2003-08-19 2008-12-03 新日本製鐵株式会社 高強度合金化溶融亜鉛めっき鋼板の製造方法と製造設備
JP4770428B2 (ja) 2005-11-29 2011-09-14 Ｊｆｅスチール株式会社 高強度溶融亜鉛めっき鋼板の製造方法および溶融亜鉛めっき鋼板の製造設備
BE1017086A3 (fr) * 2006-03-29 2008-02-05 Ct Rech Metallurgiques Asbl Procede de recuit et preparation en continu d'une bande en acier a haute resistance en vue de sa galvanisation au trempe.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214712A (ja) † 1982-06-07 1983-12-14 Daido Steel Co Ltd 加熱炉
US6902829B2 (en) † 2001-11-15 2005-06-07 Isg Technologies Inc. Coated steel alloy product
EP1936000A1 (en) † 2005-10-14 2008-06-25 Nippon Steel Corporation Method of continuous annealing/hot-dipping of steel sheet containing silicon and apparatus for continuous annealing/hot-dipping

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Radiant tube technology for strip line furnaces", A.Milani et al., IFRF Combustion Journal, Article number 200405, Novembre 2004 †
Traduction française de JP S58214712A †

Also Published As

Publication number Publication date
US8609192B2 (en) 2013-12-17
EP2188399A1 (fr) 2010-05-26
JP2010538163A (ja) 2010-12-09
CN101796203B (zh) 2011-12-14
US20100173072A1 (en) 2010-07-08
EP2188399B1 (fr) 2013-08-28
FR2920439A1 (fr) 2009-03-06
WO2009030823A1 (fr) 2009-03-12
FR2920439B1 (fr) 2009-11-13
CN101796203A (zh) 2010-08-04

Similar Documents

Publication Publication Date Title
EP2188399B2 (fr) Procede et dispositif d'oxydation/reduction controlee de la surface d'une bande d'acier en defilement continu dans un four a tubes radiants en vue de sa galvanisation
EP1999287B1 (fr) Procede de recuit et de preparation en continu d'une bande d'acier a haute resistance en vue de sa galvanisation au trempe
CN102260842B (zh) 熔融镀锌方法及熔融镀锌设备
EP2458022B1 (en) Method of galvanising a steel strip in a continuous hot dip galvanising line
EP2240291B1 (fr) Dispositif d'alimentation en gaz d'une machine de brasage ou etamage a la vague
FR2828888A1 (fr) Procede de galvanisation a chaud de bandes metalliques d'aciers a haute resistance
EP1001237A1 (fr) Procédé de chauffage d'un four à chargement continu notamment pour produits sidérurgiques, et four de chauffage à chargement continu
EP2181198B1 (fr) Procede de mise en uvre d'une ligne de recuit ou de galvanisation en continu d'une bande metallique
EP1134298B1 (fr) Perfectionnements apportés au préchauffage de bandes métalliques notamment dans des lignes de galvanisation ou de recuit
EP3671038B1 (fr) Ensemble et procédé pour l'injection d'un agent de combustion gazeux
FR2562562A1 (fr) Procede et dispositif de nettoyage en continu d'une bande metallique
WO2015064695A1 (ja) 溶融金属めっき炉、めっき製品の製造方法及び製造システム及び当該製造方法によって得られた金属めっき鋼管
BE1011131A6 (fr) Procede de revetement d'une bande d'acier par galvanisation a chaud.
JP3889019B2 (ja) 溶融亜鉛めっき鋼板の製造方法
JP2015218373A (ja) めっき製品の製造方法及び製造システム及び当該製造方法によって得られた金属めっき鋼管
JP5863464B2 (ja) 溶融亜鉛めっき設備の焼鈍炉およびその焼鈍炉における操業方法
FR2854233A1 (fr) Procede pour ameliorer les performances d'un four de rechauffage et four mettant en oeuvre ce procede
FR2830606A1 (fr) Bruleur adaptable a differentes puissances de fonctionnement
CN112813371A (zh) 双相钢镀锌的方法
FR2846341A1 (fr) Procede de traitement de tole avant galvanisation
BE699498A (zh)
EP1352099A1 (fr) Procede pour eviter l'entrainement de particules de zinc sur une tole galvanisee

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: 20100118

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 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

17Q First examination report despatched

Effective date: 20100913

DAX Request for extension of the european patent (deleted)
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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

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: AT

Ref legal event code: REF

Ref document number: 629410

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130915

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: DE

Ref legal event code: R096

Ref document number: 602008027188

Country of ref document: DE

Effective date: 20131024

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130828

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: 20130828

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: 20130828

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: 20130828

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: 20131128

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: 20131228

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: 20131230

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: 20130828

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130828

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: 20130828

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: 20131129

Ref country code: PL

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: 20130828

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: 20130828

Ref country code: FI

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: 20130828

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

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: 20130828

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: 20130828

Ref country code: NL

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: 20130828

Ref country code: RO

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: 20130828

Ref country code: CZ

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: 20130828

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: 20130828

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130828

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: ARCELORMITTAL FRANCE RESEARCH & DEVELOPMENT INTELL

Effective date: 20140528

REG Reference to a national code

Ref country code: DE

Ref legal event code: R026

Ref document number: 602008027188

Country of ref document: DE

Effective date: 20140528

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140704

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140704

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: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

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: 20140704

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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: 20140704

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: PRIMETALS TECHNOLOGIES FRANCE SAS

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602008027188

Country of ref document: DE

Representative=s name: FISCHER, MICHAEL, DR., DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602008027188

Country of ref document: DE

Owner name: PRIMETALS TECHNOLOGIES FRANCE SAS, FR

Free format text: FORMER OWNER: SIEMENS VAI METALS TECHNOLOGIES SAS, SAINT CHAMOND, FR

Ref country code: DE

Ref legal event code: R082

Ref document number: 602008027188

Country of ref document: DE

Representative=s name: KINNSTAETTER, KLAUS, DIPL.-PHYS.UNIV., DE

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

REG Reference to a national code

Ref country code: FR

Ref legal event code: CA

Effective date: 20160204

Ref country code: FR

Ref legal event code: CD

Owner name: PRIMETALS TECHNOLOGIES FRANCE SAS, FR

Effective date: 20160204

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: 20130828

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

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: 20130828

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: 20130828

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

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: 20080704

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602008027188

Country of ref document: DE

Representative=s name: KINNSTAETTER, KLAUS, DIPL.-PHYS.UNIV., DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: PC

Ref document number: 629410

Country of ref document: AT

Kind code of ref document: T

Owner name: PRIMETALS TECHNOLOGIES FRANCE SAS, FR

Effective date: 20170403

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: PRIMETALS TECHNOLOGIES USA LLC

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

REG Reference to a national code

Ref country code: BE

Ref legal event code: HC

Owner name: CLECIM SAS; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: PRIMETALS TECHNOLOGIES FRANCE SAS

Effective date: 20211008

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

REG Reference to a national code

Ref country code: BE

Ref legal event code: HC

Owner name: CLECIM SAS; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: SIEMENS VAI METALS TECHNOLOGIES SAS

Effective date: 20211008

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

27A Patent maintained in amended form

Effective date: 20230503

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 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: DE

Ref legal event code: R102

Ref document number: 602008027188

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602008027188

Country of ref document: DE

Owner name: PRIMETALS TECHNOLOGIES USA LLC, ALPHARETTA, US

Free format text: FORMER OWNER: PRIMETALS TECHNOLOGIES FRANCE SAS, SAVIGNEUX, FR

REG Reference to a national code

Ref country code: BE

Ref legal event code: PD

Owner name: PRIMETALS TECHNOLOGIES USA LLC; US

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: PRIMETALS TECHNOLOGIES FRANCE SAS

Effective date: 20230616

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230626

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230724

Year of fee payment: 16

Ref country code: AT

Payment date: 20230720

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230725

Year of fee payment: 16

Ref country code: DE

Payment date: 20230719

Year of fee payment: 16

Ref country code: BE

Payment date: 20230719

Year of fee payment: 16