EP1134298A1 - Perfectionnements apportés au préchauffage de bandes métalliques notamment dans des lignes de galvanisation ou de recuit - Google Patents
Perfectionnements apportés au préchauffage de bandes métalliques notamment dans des lignes de galvanisation ou de recuit Download PDFInfo
- Publication number
- EP1134298A1 EP1134298A1 EP01400142A EP01400142A EP1134298A1 EP 1134298 A1 EP1134298 A1 EP 1134298A1 EP 01400142 A EP01400142 A EP 01400142A EP 01400142 A EP01400142 A EP 01400142A EP 1134298 A1 EP1134298 A1 EP 1134298A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burners
- preheating zone
- zone
- length
- preheating
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 8
- 238000005246 galvanizing Methods 0.000 title description 7
- 238000000137 annealing Methods 0.000 title description 5
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- 230000003647 oxidation Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 238000003303 reheating Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000011282 treatment Methods 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 239000007800 oxidant agent Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- 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
-
- 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
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
-
- 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
-
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- 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
- C21D11/00—Process control or regulation for heat treatments
Definitions
- the present invention relates to improvements made to the preheating of metal strips, especially steel strips, in direct fire preheating sections, installed in particular at the inlet hot dip galvanizing lines or in annealing lines.
- the preheating is carried out according to several zones including the regulation of temperature is independent, generally according to four zones for high capacity lines and following two zones for low lines capacity, each of these zones being provided, for example, from four to six burners on each side of the oven.
- the galvanized or annealed strips in the continuous lines have varying shades, widths or thicknesses and they also scroll at variable speeds, which conditions the heat demand of the zones of the oven which can vary in significant proportions.
- variable heat demand for example when the formats or the tape speed is low, usually only a reduced number of these preheating zones by stopping the first zones in the direction advancement of the strip, or by maintaining them at a thermal regime minimum, equivalent to approximately 15 to 20% of their nominal power.
- FIG. 1 of the accompanying drawings in which there is shown schematically, in side elevation, an example of realization of a preheating installation comprising two zones of preheating.
- figure 1A which represents the calorific power used in the two preheating zones and the variation curve of the strip temperature in said zones.
- the preheating installation of the strip 1 has two preheating zones 2 and 3. Each of these zones is equipped with burners 4 supplied with combustion air by a manifold 5 and in fuel by a collector 7.
- the power injected into each zone is controlled by oxidizer flow control valves and fuel, respectively 6 and 8.
- the heat output represented by the hatched area of the graph in FIG. 1A corresponds to 60% of the nominal power of the second zone 3, the first zone 1 operates at its minimum power, for example 15%.
- Curve 9 shows the temperature rise of the strip in the areas of preheating. Under these conditions, the gas and wall temperature of the second preheating zone 3 stabilizes at low levels, from around 1150 ° C or lower.
- the oxidation formed on the surface of the strip under these conditions must be eliminated, which requires the installation, downstream of the area of the preheats, from a holding zone, in an atmosphere containing hydrogen, long enough to remove the oxides formed by reduction.
- This reduction must be carried out at high temperature which requires usually reheating the tape to levels that are not often achieved only for the purpose of achieving this reduction while they are not necessary for the metallurgical treatment of the steel grade Of the band.
- the present invention has set itself the objective of solving the problem technique mentioned above by bringing a new process and an oven improved allowing the heating of strips in sections of preheats over direct heat, with limited oxidation, for all production configurations (line speed, characteristics of processing, product characteristics including shade and format).
- this invention in addition to improving the quality of the finished product that it brings solves the problem of the congestion of the installations, encountered in the prior art mentioned above, being given that its implementation allows to limit the dimensions and by therefore the costs of the annealing or galvanizing lines on which it is applied.
- this invention relates primarily to a method of reheating of metal strips, especially of steel in sections of direct preheating to limit the oxidation of the strips heated metal, whatever the production configuration, which consists in implementing a preheating zone which can be divided, according to its length, into a plurality of length zones unit corresponding to a burner, each of said burners can be individually controlled at a fixed speed in order to adjust it precisely the air / gas setting therefore the resulting atmosphere in the oven, characterized in what we light a number of burners from downstream of the preheating zone, the length of the oven zone affected by the ignition of said burners and the length of the recovery zone, that is to say of the area in which the burners are turned off being variable in depending on the heat demand and in that each burner operates at full power and with constant air / gas adjustment.
- the ambient and wall temperatures of the preheating zone is greater than 1100 ° C, preferably included between 1250 and 1300 ° C.
- the outlet temperature of the zone preheating is adapted to this treatment, which makes it possible to limit or even remove the length of the cooling zones installed downstream of the preheating zone.
- the minimum temperature of leaving the preheating zone is suitable for this treatment in order to limit or even to delete, if necessary, the length of the heating zones provided downstream of the preheating zone.
- This invention also relates to an oven for the implementation of the process as specified above which includes a preheating zone fractionated into a plurality of zones of corresponding unit length each with a burner, each of said burners being controlled individually at a fixed speed, characterized in that each burner is individually controlled using valves on the fuel supply and valves on the fuel supply so as to light a number of burners, starting downstream from the preheating zone, which corresponds on heat demand and in that said burners operate at full power and with constant air / gas adjustment.
- the preheating zone is divided into two preheating zones supplied with oxidant and fuel by collectors 5 and 7, each of the burners 4 of the two preheating zones can be individually controlled by means of valves 10 on the oxidizer circuit and valves 11 on the fuel circuit. These valves can be controlled in proportional mode to obtain a setting of the power injected by varying the oxidizer flow rates or fuel, or in all or nothing mode, the adjustment of the power injected into the area then being adjusted by the ratio between the operating time of the burner and its stopping time or even adjusted by the choice of the number of burners in operation at full power.
- the present invention to operate a number of burners corresponding to the heat demand of the full oven regime so that the area in which these burners are installed is brought to the required temperature level, for example 1300 ° C.
- This heat demand is measured and controlled by a regulation system of the oven controlling the ignition of the corresponding number of burners, these burners operating at full capacity.
- the four burners located at the outlet of the preheating zone operate in permanently at 100% of their nominal capacity, the fifth burner of this zone adjusting the amount of power injected, either according to a proportional regulation of its flow, either by adjusting its operation.
- Variations in the furnace heat demand linked to changes in speed or format of the product to be treated results in an increase or a reduction in the number of burners lit, therefore by a variation of the length of the area in which the temperature conditions are joined together to keep the tape in a temperature zone where its oxidation is reduced.
- the area in which the burners are stopped is then behaves like a recovery zone extending that which exists upstream of preheating.
- FIG. 3A the curve of the evolution of the temperature of the strip for a preheating outlet temperature identical to that of Figure 1A.
- the final temperature range of the strip for which the oxidation is reduced is used to optimize the length of the oven.
- an exit temperature of strip of the preheating zone of 500 ° C which is sufficient for its treatment, replacing the temperature of 650 ° C traditionally imposed by the preheating means according to the previous state of the technical. It is obvious, the band being less hot, than the equipment cooling systems located at the line outlet will be reduced by decreasing all the bulk of the equipment and therefore its cost.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
- chauffage de la bande;
- élimination des résidus d'huiles de laminage ou de protection, présents lorsque la ligne n'est pas équipée d'une section préalable de dégraissage, et
- limitation ou élimination de l'oxydation de la bande d'acier, inhérente au chauffage par brûleurs.
- la bande est chauffée dans une zone de préchauffage dont la longueur est variable mais les conditions de température et d'atmosphère sont optimales en regard de l'oxydation, ceci à tous les régimes de fonctionnement de la ligne, pour toutes les caractéristiques de bandes ou de cycles de traitement, la longueur de la zone de préchauffage ainsi définie est adaptée au tonnage produit par la ligne de traitement (notamment ligne de recuit ou de galvanisation), quels que soient les formats des produits traités ou la vitesse de ladite ligne;
- les brûleurs fonctionnent tous à un régime et à un réglage tels qu'ils offrent une géométrie et des caractéristiques de flamme optimales en regard du traitement chimique devant être opéré sur la surface de la bande.
- il n'est plus nécessaire de surchauffer la bande pour réduire les oxydes formés, ce qui offre la possibilité de réaliser des cycles à basse température, avantage se traduisant par une diminution de la consommation d'énergie et des fours plus courts;
- lorsque le cycle de traitement s'effectue à basse température, il est possible de réduire, voire de supprimer les équipements de refroidissement de bandes en sortie de lignes et
- l'oxydation étant limitée, le temps de réduction des oxydes est plus court donc le four en aval est plus court. De même lorsque l'oxydation dans la préchauffe est réduite il est possible de chauffer à température plus élevée dans cette zone, donc de réduire la longueur de la zone de chauffage sous atmosphère.
Claims (9)
- Procédé de réchauffage de bandes métalliques, notamment d'acier dans des sections de préchauffage à feu direct en vue de limiter l'oxydation des bandes métalliques chauffées, quelles que soient les configurations de production, qui consiste à mettre en oeuvre une zone de préchauffage pouvant être fractionnée, selon sa longueur, en une pluralité de zones de longueur unitaire correspondant à un brûleur, chacun desdits brûleurs pouvant être commandé individuellement à un régime fixe afin d'en ajuster avec précision le réglage air/gaz donc l'atmosphère résultante dans le four, caractérisé en ce qu'on allume un certain nombre de brûleurs en partant de l'aval de la zone de préchauffage, la longueur de la zone du four concernée par l'allumage desdits brûleurs et la longueur de la zone de récupération, c'est-à-dire de la zone dans laquelle les brûleurs sont éteints étant variables en fonction de la demande calorifique et en ce que chaque brûleur fonctionne à pleine puissance et avec un réglage air/gaz constant.
- Procédé selon la revendication 1, caractérisé en ce que la température d'ambiance et de parois de la zone de préchauffage est supérieure à 1100°C, de préférence comprise entre 1250 et 1300°C.
- Procédé selon l'une des revendications 1 ou 2, caractérisé en ce qu'il est appliqué à des traitements thermiques à basse température.
- Four pour la mise en oeuvre du procédé tel que spécifié dans l'une quelconque des revendications précédentes qui comporte une zone de préchauffage fractionnée en une pluralité de zones de longueur unitaire correspondant chacune à un brûleur (4), chacun desdits brûleurs étant commandé individuellement à un régime fixe, caractérisé en ce que chaque brûleur (4) est contrôlé individuellement à l'aide de vannes (10) sur l'alimentation en comburant et de vannes (11) sur l'alimentation en carburant de façon à allumer un nombre de brûleurs, en partant de l'aval de la zone de préchauffage, qui correspond à la demande calorifique et en ce que lesdits brûleurs fonctionnent à pleine puissance et avec un réglage air/gaz constant.
- Four selon la revendication 4, caractérisé en ce que lesdites vannes (10,11) sont commandées en mode proportionnel afin d'obtenir un réglage de la puissance injectée par la variation des débits de comburant et de carburant alimentant les brûleurs (4).
- Four selon la revendication 4, caractérisé en ce que le réglage de la puissance injectée dans une zone de préchauffage est ajusté par le rapport entre le temps de fonctionnement du brûleur considéré (4) et son temps d'arrêt.
- Four selon la revendication 4, caractérisé en ce que le réglage de la puissance injectée dans une zone de préchauffage est ajusté par le choix du nombre de brûleurs (4) en service à pleine puissance.
- Four selon l'une quelconque des revendications 4 à 7, appliqué au traitement thermique de bandes, caractérisé en ce que la température de sortie de la zone de préchauffage est adaptée audit traitement afin de limiter ou de supprimer la longueur des zones de refroidissement installées en aval de la zone de préchauffage.
- Four selon l'une quelconque des revendications 4 à 7, appliqué au traitement thermique de bandes d'acier, caractérisé en ce que la température minimale de sortie de la zone de préchauffage est adaptée audit traitement, afin de limiter ou de supprimer la longueur des zones de chauffage prévues en aval de la zone de préchauffage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0002990A FR2806097B1 (fr) | 2000-03-08 | 2000-03-08 | Perfectionnements apportes au prechauffage de bandes metalliques notamment dans des lignes de galvanisation ou de recuit |
| FR0002990 | 2000-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1134298A1 true EP1134298A1 (fr) | 2001-09-19 |
| EP1134298B1 EP1134298B1 (fr) | 2007-10-10 |
Family
ID=8847875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01400142A Expired - Lifetime EP1134298B1 (fr) | 2000-03-08 | 2001-01-18 | Perfectionnements apportés au préchauffage de bandes métalliques notamment dans des lignes de galvanisation ou de recuit |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6761779B2 (fr) |
| EP (1) | EP1134298B1 (fr) |
| JP (1) | JP2001294941A (fr) |
| KR (1) | KR100785255B1 (fr) |
| CN (1) | CN1179056C (fr) |
| AT (1) | ATE375408T1 (fr) |
| DE (2) | DE60130823T2 (fr) |
| ES (1) | ES2161660T3 (fr) |
| FR (1) | FR2806097B1 (fr) |
| PT (1) | PT1134298E (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2852330B1 (fr) * | 2003-03-12 | 2007-05-11 | Stein Heurtey | Procede d'oxydation controlee de bandes avant galvanisation en continu et ligne de galvanisation |
| DE102006005063A1 (de) * | 2006-02-03 | 2007-08-09 | Linde Ag | Verfahren zur Wärmebehandlung von Stahlbändern |
| JP4718381B2 (ja) * | 2006-06-21 | 2011-07-06 | 株式会社神戸製鋼所 | 溶融亜鉛めっき設備 |
| FR2917817B1 (fr) * | 2007-06-21 | 2016-05-27 | Stein Heurtey | Dispositif permettant de limiter l'echappement de fumees de combustion a l'entree d'un four de rechauffage de produits siderurgiques |
| DE102008006248A1 (de) * | 2008-01-25 | 2009-07-30 | Schwartz, Eva | Vorrichtung und Verfahren zur Erwärmung von Werkstücken |
| DE102009014223A1 (de) * | 2009-03-25 | 2010-09-30 | Hitachi Power Europe Gmbh | Feuerungssystem eines für den Oxyfuel-Betrieb ausgelegten Dampferzeugers |
| CN103225016B (zh) * | 2013-04-27 | 2014-12-24 | 宝山钢铁股份有限公司 | 一种带钢表面火焰清洗方法及装置 |
| AT517848B1 (de) * | 2016-04-15 | 2017-05-15 | Andritz Tech And Asset Man Gmbh | Verfahren und ofenanlage zum wärmebehandeln von metallbändern |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2083823A5 (fr) * | 1970-03-03 | 1971-12-17 | Koppers Wistra Ofenbau Gmbh | |
| FR2406667A1 (fr) * | 1977-10-20 | 1979-05-18 | Nippon Steel Corp | Procede de controle de la temperature d'une bande d'acier dans une installation de chauffage en continu |
| JPS5672134A (en) * | 1979-11-17 | 1981-06-16 | Daido Steel Co Ltd | Control of heating furnace and its controlling device |
| DE3238546A1 (de) * | 1981-10-17 | 1983-06-23 | Sanken Sangyo K.K., Hiroshima | Verfahren zum heizen eines ofens |
| EP0630978A1 (fr) * | 1993-06-23 | 1994-12-28 | The Gas Research Institute | Procédé de chauffage d'articles métalliques par impact de flammes provenant de brûleurs à oxygène-combustible |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915725A (ja) * | 1982-07-17 | 1984-01-26 | Sanken Sangyo Kk | 炉の加熱法 |
| JP2521386B2 (ja) * | 1991-10-31 | 1996-08-07 | 日本ファーネス工業株式会社 | 鉄鋼加熱炉 |
| JPH06212285A (ja) * | 1993-01-19 | 1994-08-02 | Mitsubishi Heavy Ind Ltd | 焼鈍設備 |
| JPH06287643A (ja) * | 1993-03-31 | 1994-10-11 | Mitsubishi Heavy Ind Ltd | 連続鋼板熱処理ラインの板温制御装置 |
-
2000
- 2000-03-08 FR FR0002990A patent/FR2806097B1/fr not_active Expired - Fee Related
-
2001
- 2001-01-18 AT AT01400142T patent/ATE375408T1/de active
- 2001-01-18 EP EP01400142A patent/EP1134298B1/fr not_active Expired - Lifetime
- 2001-01-18 DE DE60130823T patent/DE60130823T2/de not_active Expired - Lifetime
- 2001-01-18 DE DE1134298T patent/DE1134298T1/de active Pending
- 2001-01-18 PT PT01400142T patent/PT1134298E/pt unknown
- 2001-01-18 ES ES01400142T patent/ES2161660T3/es not_active Expired - Lifetime
- 2001-03-02 US US09/796,355 patent/US6761779B2/en not_active Expired - Fee Related
- 2001-03-06 JP JP2001061648A patent/JP2001294941A/ja active Pending
- 2001-03-07 KR KR1020010011639A patent/KR100785255B1/ko not_active Expired - Fee Related
- 2001-03-08 CN CNB011112328A patent/CN1179056C/zh not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2083823A5 (fr) * | 1970-03-03 | 1971-12-17 | Koppers Wistra Ofenbau Gmbh | |
| FR2406667A1 (fr) * | 1977-10-20 | 1979-05-18 | Nippon Steel Corp | Procede de controle de la temperature d'une bande d'acier dans une installation de chauffage en continu |
| JPS5672134A (en) * | 1979-11-17 | 1981-06-16 | Daido Steel Co Ltd | Control of heating furnace and its controlling device |
| DE3238546A1 (de) * | 1981-10-17 | 1983-06-23 | Sanken Sangyo K.K., Hiroshima | Verfahren zum heizen eines ofens |
| EP0630978A1 (fr) * | 1993-06-23 | 1994-12-28 | The Gas Research Institute | Procédé de chauffage d'articles métalliques par impact de flammes provenant de brûleurs à oxygène-combustible |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 005, no. 136 (C - 069) 28 August 1981 (1981-08-28) * |
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| Publication number | Publication date |
|---|---|
| ATE375408T1 (de) | 2007-10-15 |
| JP2001294941A (ja) | 2001-10-26 |
| ES2161660T1 (es) | 2001-12-16 |
| DE60130823T2 (de) | 2008-07-17 |
| ES2161660T3 (es) | 2008-03-01 |
| DE1134298T1 (de) | 2002-04-18 |
| KR100785255B1 (ko) | 2007-12-13 |
| FR2806097B1 (fr) | 2002-05-10 |
| EP1134298B1 (fr) | 2007-10-10 |
| CN1315584A (zh) | 2001-10-03 |
| FR2806097A1 (fr) | 2001-09-14 |
| US20020162612A1 (en) | 2002-11-07 |
| PT1134298E (pt) | 2007-10-24 |
| CN1179056C (zh) | 2004-12-08 |
| DE60130823D1 (de) | 2007-11-22 |
| US6761779B2 (en) | 2004-07-13 |
| KR20010088418A (ko) | 2001-09-26 |
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