EP1816219A1 - Verfahren zur Wärmebehandlung von Stahlbändern mittels direkter Flammenbeheizung - Google Patents

Verfahren zur Wärmebehandlung von Stahlbändern mittels direkter Flammenbeheizung Download PDF

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Publication number
EP1816219A1
EP1816219A1 EP06007147A EP06007147A EP1816219A1 EP 1816219 A1 EP1816219 A1 EP 1816219A1 EP 06007147 A EP06007147 A EP 06007147A EP 06007147 A EP06007147 A EP 06007147A EP 1816219 A1 EP1816219 A1 EP 1816219A1
Authority
EP
European Patent Office
Prior art keywords
product
temperature
booster
zone
burner
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.)
Withdrawn
Application number
EP06007147A
Other languages
German (de)
English (en)
French (fr)
Inventor
Herbert Eichelkrauth
Hans-Joachim Heiler
Werner Högner
Fred Jindra
Reinhard Paul
Ola Ritzén
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.)
Linde GmbH
ThyssenKrupp Steel Europe AG
Original Assignee
Linde GmbH
ThyssenKrupp Steel AG
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
Application filed by Linde GmbH, ThyssenKrupp Steel AG filed Critical Linde GmbH
Priority to BRPI0707378-0A priority Critical patent/BRPI0707378B1/pt
Priority to CA2637847A priority patent/CA2637847C/en
Priority to JP2008552706A priority patent/JP5268650B2/ja
Priority to KR1020087020692A priority patent/KR20080109737A/ko
Priority to PL07702696T priority patent/PL1979495T3/pl
Priority to AT07702696T priority patent/ATE516372T1/de
Priority to PCT/EP2007/000219 priority patent/WO2007087973A2/en
Priority to RU2008135237/02A priority patent/RU2435869C2/ru
Priority to CN200780004421XA priority patent/CN101448963B/zh
Priority to US12/162,641 priority patent/US9322598B2/en
Priority to EP07702696A priority patent/EP1979495B1/en
Publication of EP1816219A1 publication Critical patent/EP1816219A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • 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
    • 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
    • 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
    • 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
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • 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
    • C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
    • F27D2019/004—Fuel quantity
    • F27D2019/0043—Amount of air or O2 to the burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners

Definitions

  • the invention relates to a method for the heat treatment of products made of steel, in particular steel bands or sheets, wherein the product is brought in a booster zone with at least one burner from an initial temperature to a target temperature, wherein the burner or burners with a fuel, in particular a fuel gas, and an oxygen-containing gas, wherein the oxygen-containing gas contains more than 21% oxygen, and wherein the product comes into direct contact with the flame (s) generated by the burner (s).
  • the strips to be coated are first cleaned, heated in a continuous furnace, and then annealed in a reducing atmosphere to the desired material properties. Thereafter, the actual coating is carried out in a suitable molten bath or with a corresponding method.
  • the steel In the heating phase in the continuous furnace, the steel should be heated under defined conditions in order to be able to better adjust the required properties in the following process steps. Depending on the type of steel used, it may be advantageous to minimize the oxidation, or to bring about a certain degree of oxidation targeted.
  • the heating of the steel strips is currently in continuous furnaces, the steel strips pass through a convection zone and a heating zone.
  • the bands are heated with burners and heated in the convection zone in front of the hot exhaust gases of the burner of the heating zone.
  • the degree of oxidation is difficult to control, since the temperature profile in this zone depends inter alia on the length of the convection zone and the temperature and amount of the exhaust gases.
  • the composition of the exhaust gases in the convection zone is determined by the operation of the burners and, if necessary, by passing through the continuous furnace false air. This means that the heating conditions in the convection zone are determined essentially by the requirements of the burners in the heating zone. For these reasons, a targeted adjustment of the temperature profile in the convection zone is not possible.
  • Object of the present invention is therefore to develop a method for heat treatment of steel products, which allows a targeted adjustment of the heating conditions.
  • This object is achieved by a method for the heat treatment of products made of steel, in particular bands or sheets of steel, wherein the product are brought in a booster zone with at least one burner from an initial temperature to a target temperature, wherein the burner or burners with a fuel , in particular a fuel gas, and an oxygen-containing gas, wherein the oxygen-containing gas contains more than 21% oxygen and wherein the product comes into direct contact with the flame (s) generated by the burner (s), and characterized is that within the flame, the air ratio ⁇ is set depending on the output temperature and / or the target temperature.
  • booster zone is meant a heat treatment furnace or a zone of a heat treatment furnace in which at least one burner is provided which is operated with a fuel gas and an oxygen-containing gas, the oxygen-containing gas containing more than 21% oxygen.
  • the burner is arranged or operated so that the product to be treated comes into direct contact with the flame of the burner.
  • the air ratio ⁇ indicates the ratio of the amount of oxygen supplied during the combustion to the amount of oxygen necessary for a stoichiometric conversion of the fuel used.
  • ⁇ the ratio of the amount of oxygen supplied during the combustion to the amount of oxygen necessary for a stoichiometric conversion of the fuel used.
  • excess oxygen ⁇ > 1
  • a hypostoichiometric reaction in the absence of oxygen is characterized by ⁇ ⁇ 1.
  • starting temperature and target temperature respectively refer to the surface temperature or, depending on the material thickness, the core temperature of the steel product before or after the treatment with the burner or the burners of the booster zone.
  • the surface temperature and the core temperature are very close together.
  • the surface temperature or the core temperature are selected as the starting and target tempera tures depending on the application.
  • the target temperature does not necessarily have to be greater than the starting temperature. It is also within the scope of the present invention to maintain the temperature of the product in the booster zone at a constant level. In this case, the initial and target temperatures are the same. It is even conceivable that the target temperature is below the starting temperature, for example, if the steel product is cooled in another way and serve the booster or burners of the booster zone to avoid excessive cooling or to control the degree of cooling.
  • the oxidizing agent used is oxygen-enriched air or technically pure oxygen.
  • the oxygen content of the oxidizing agent is preferably more than 50%, particularly preferably more than 75%, very particularly preferably more than 90%.
  • the steel product according to the invention is directly exposed to the flame of the burner, that is, the steel product or a part of the steel product comes into direct contact with the flame of the burner.
  • Such burners which are operated with a fuel and an oxygen-containing gas with more than 21% oxygen content and whose flame is oriented so that the steel product in direct contact with the flame, are also referred to below as a booster burner.
  • the booster burners can basically be used at any point within the heat treatment process.
  • the conventional heating of steel strips in continuous furnaces is carried out with burners, which are arranged above and / or below the steel strip and whose flames are directed to the surrounding furnace masonry.
  • the masonry then radiates again the heat energy to the current through the oven belt.
  • the flame therefore does not act directly on the steel strip, but only indirectly via the radiation of the brickwork heated by the flame.
  • the heat treatment conditions can be set in a defined manner.
  • the stoichiometry of the combustion ie the air ratio ⁇ , is selected within the flame as a function of the starting temperature and / or the target temperature.
  • the dependence of the ⁇ value on the temperature of the steel product shown in FIG. 1 has proved to be advantageous.
  • a ⁇ value of 1.12 is preferably selected, at 1.07 at 200 ° C, at 1.00 at 400 ° C, and at 0.95 at 600 ° C.
  • the heat treatment also shows positive results within a tolerance range with regard to the ⁇ value of ⁇ 0.05.
  • the dependence of the ⁇ value on the temperature can deviate from the curve shown in FIG.
  • the ⁇ value within the flame is set as a function of the starting temperature of the steel product.
  • the target temperature is also possible to use the target temperature as a parameter for the selection of the ⁇ value.
  • the target temperature in the case of relatively rapid heating, in which the target temperature deviates significantly from the starting temperature, it has proven to be favorable to use both temperatures, the starting temperature and the target temperature, to be considered when choosing the ⁇ value.
  • the booster zone it is advantageous to provide at least one further treatment zone in which the product is brought from an initial temperature to a target temperature, preferably also in the additional treatment zone the ⁇ value as a function of the respective starting temperature and / or the respective target temperature is set.
  • a defined heat treatment can also be carried out in the additional treatment zone (s).
  • At least one of the additional treatment zones is likewise designed as a booster zone.
  • at least two booster zones are thus provided, in which the steel product is heated with at least one booster burner, that is to say with a burner operated with oxygen or with oxygen-enriched air and with a fuel, the flame of which acts directly on the steel product.
  • the ⁇ value is advantageously set as a function of the starting and / or target temperature of the respective booster zone.
  • the exhaust gas produced during operation of the booster burners is preferably post-combusted in dependence on its CO content in the exhaust gas duct.
  • the product in a transport direction through the booster zone, wherein the flame the product over its entire Surrounding circumference transversely to the transport direction.
  • the steel product for example a steel strip
  • the flame of at least one booster burner acts on the steel product, the flame completely surrounding the steel product, that is, at the treatment site, the cross section of the steel product is completely within the flame.
  • the flame envelops the steel product in the direction perpendicular to the transport direction. In this way, a uniform and, as the stoichiometry is set in the flame according to the invention, defined heating of the steel product over its entire cross section is achieved.
  • the flame of the booster burner or the booster burner is expediently not used, as stated above, as an envelope flame, but is defined in specific areas, for example only the edge regions, of the steel product.
  • the direct effect of the flame of the booster burner on the steel product also makes it possible to specifically influence the target temperature in the booster zone by varying the geometry of the flame.
  • the invention is particularly suitable for the heat treatment of steel products, in particular steel strips or steel sheets, which are to be subjected to a subsequent finishing / coating in a molten bath or another suitable process.
  • the products to be galvanized are advantageously heat-treated according to the invention before hot-dip galvanizing.
  • FIG. 2 shows two booster burners 1, 2 which are used for heating a steel strip 3 according to the invention from an initial temperature to a target temperature.
  • the belt 3 is transported by a continuous furnace, not shown, in a direction perpendicular to the plane of the drawing.
  • the burners 1, 2 are arranged perpendicular to the transport direction and perpendicular to the strip surface 4.
  • the flames 5 generated by the booster burners 1, 2 envelop the entire cross section of the steel strip 3. Within the flame 5, the stoichiometry is set defined depending on the starting temperature and the target temperature.
  • the enveloping flames 5 according to the invention thus ensure a uniform and defined heating and treatment of the steel strip 3.
  • the inventive method is preferably used for cleaning and / or heating of strip-shaped steel products in continuous furnaces.
  • FIGS. 3 to 7 show various possibilities of arranging one or more booster zones in a continuous furnace, in particular in a continuous furnace, in which the work steps which are usually preceded by hot-dip galvanizing are carried out.
  • FIG 3 the use of booster zones for cleaning and preheating steel strips is shown schematically.
  • a manufactured by cold rolling / hot rolling Steel strip is to be heat treated for a following eg hot dip galvanizing.
  • the steel strip located at room temperature is fed to a first booster zone 6, in which the strip is substantially cleaned and preheated in a first stage.
  • a relatively high ⁇ value of 1.3 is selected in this zone and the steel strip is heated up to 400 ° C. under these superstoichiometric conditions.
  • booster zones 7, 8 For further heating of the steel strip two booster zones 7, 8 are provided, in which the strip is first heated from 400 ° C to 600 ° C and then to the desired final temperature of 650 ° C.
  • the steel strip is heated in both booster zones 7, 8, as well as in booster zone 6, each with a plurality of oxygen-enriched air and a fuel gas burners, the flames of the burner act directly on the steel strip.
  • the arrangement of the burners is preferably such that the steel strip, as shown in Figure 2, is completely enveloped by the flames of the burner over the cross section.
  • the ⁇ value in the burner flames in booster zone 7 is set to a value of 0.96 and that of the burner flames in booster zone 8 to a value of 0.90.
  • FIG 4 is shown for another heat treatment furnace, the course of the temperature of a steel strip to be heated and the ⁇ value within the steel strip heating flames over the furnace length.
  • the furnace is in this case divided over its length L into several booster zones, wherein the ⁇ value in each booster zone is gradually lowered in accordance with the respective starting temperature of this booster zone. In this way, an optimal adaptation of the heat treatment conditions to the current temperature conditions is achieved.
  • FIG. 5 shows an embodiment of the invention in which the booster burner (s) is used to clean a steel sheet contaminated with hot rolled or cold rolled steel.
  • a booster zone 10 is established on the first 2.5 m furnace length.
  • the steel strip is heated from 20 ° C to 300 ° C and existing rolling residues are burned.
  • the ⁇ value is set in this zone 10 to a value between 1.1 and 1.6, that is, it provides over-stoichiometric combustion conditions.
  • the booster zone 10 is followed by a 40 m long preheating zone 11, in which the steel strip is brought to the desired target temperature, for example 650 ° C.
  • the heating in the preheating zone 11 takes place substoichiometrically with a ⁇ -value of 0.96, before the steel strip is transported into a reduction furnace 12.
  • FIG. 6 shows the temperature of the steel strip as a function of its position in a continuous furnace according to FIG.
  • the dotted line shows the temperature profile when using a classic burner arrangement in the booster zone 10, that is, without the booster burner according to the invention.
  • the temperature of the belt increases only slowly, in the first zone 10, only an imperceptible increase in temperature is observed.
  • the solid line shows the temperature profile when using booster burners in the booster zone 10, as described with reference to FIG. Already on the first 2.5m furnace length - in the booster zone 10 - a temperature rise to over 300 ° C is achieved. In this way, the capacity of the oven can be increased by 25%.
  • the solid line shows the temperature profile at a production of 85 tons per hour, while the dot-dash line shows the temperature profile with an increase in production to 105 tons per hour.
  • FIG. 7 shows a variant of the invention in which the booster zone 14 is arranged directly in front of the reduction zone 15 of the heat treatment furnace.
  • the steel product is heated from ambient to 550 ° C in a conventional preheat zone.
  • a booster zone 14 in which a heating to 650 ° C takes place.
  • the booster burners are driven more than stoichiometrically with a ⁇ value of 1.1 in order to oxidise the steel strip in the booster zone 14 in a targeted manner.
  • booster zone or booster zones may also be positioned at other locations within the heat treatment process. Basically, a booster zone always useful where the steel product should be heat treated as quickly as possible in a defined atmosphere.
  • the steel product has also proved favorable to subject the steel product to a heat treatment according to the invention in a booster zone after a reducing heat treatment.
  • the temperature of the steel product is only slightly increased or maintained at the same temperature level.
  • the booster zone serves to selectively influence the material by means of a defined atmosphere, that is to set the surface, the properties or the microstructure of the steel product in the desired manner.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP06007147A 2006-02-03 2006-04-04 Verfahren zur Wärmebehandlung von Stahlbändern mittels direkter Flammenbeheizung Withdrawn EP1816219A1 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
BRPI0707378-0A BRPI0707378B1 (pt) 2006-02-03 2007-01-11 Processo para o tratamento térmico de produtos de aço, em particular de tiras ou chapas de aço
CA2637847A CA2637847C (en) 2006-02-03 2007-01-11 Process for the heat treatment of steel strips
JP2008552706A JP5268650B2 (ja) 2006-02-03 2007-01-11 酸素−燃料バーナーを備えた連続熱処理炉内における鋼帯の熱処理方法
KR1020087020692A KR20080109737A (ko) 2006-02-03 2007-01-11 산소―연료 연소기를 구비한 연속로에서 띠강의 열처리를 위한 공정
PL07702696T PL1979495T3 (pl) 2006-02-03 2007-01-11 Proces obróbki cieplnej taśm stalowych
AT07702696T ATE516372T1 (de) 2006-02-03 2007-01-11 Verfahren zur wärmebehandlung von bandstahl
PCT/EP2007/000219 WO2007087973A2 (en) 2006-02-03 2007-01-11 Process for the heat treatment of steel strips in a continuous furnace with oxy-fuel burners
RU2008135237/02A RU2435869C2 (ru) 2006-02-03 2007-01-11 Способ термообработки полосовой стали в печи непрерывного действия с кислородотопливными горелками
CN200780004421XA CN101448963B (zh) 2006-02-03 2007-01-11 钢带在具有全氧燃烧器的连续炉中的热处理方法
US12/162,641 US9322598B2 (en) 2006-02-03 2007-01-11 Process for the heat treatment of steel strips
EP07702696A EP1979495B1 (en) 2006-02-03 2007-01-11 Process for the heat treatment of steel strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006005063A DE102006005063A1 (de) 2006-02-03 2006-02-03 Verfahren zur Wärmebehandlung von Stahlbändern

Publications (1)

Publication Number Publication Date
EP1816219A1 true EP1816219A1 (de) 2007-08-08

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP06007147A Withdrawn EP1816219A1 (de) 2006-02-03 2006-04-04 Verfahren zur Wärmebehandlung von Stahlbändern mittels direkter Flammenbeheizung
EP07702696A Not-in-force EP1979495B1 (en) 2006-02-03 2007-01-11 Process for the heat treatment of steel strips

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07702696A Not-in-force EP1979495B1 (en) 2006-02-03 2007-01-11 Process for the heat treatment of steel strips

Country Status (13)

Country Link
US (1) US9322598B2 (ru)
EP (2) EP1816219A1 (ru)
JP (1) JP5268650B2 (ru)
KR (1) KR20080109737A (ru)
CN (1) CN101448963B (ru)
AT (1) ATE516372T1 (ru)
BR (1) BRPI0707378B1 (ru)
CA (1) CA2637847C (ru)
DE (1) DE102006005063A1 (ru)
ES (1) ES2369010T3 (ru)
PL (1) PL1979495T3 (ru)
RU (1) RU2435869C2 (ru)
WO (1) WO2007087973A2 (ru)

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DE102008006248A1 (de) 2008-01-25 2009-07-30 Schwartz, Eva Vorrichtung und Verfahren zur Erwärmung von Werkstücken
CN102057062B (zh) * 2007-08-31 2014-07-16 西门子Vai金属科技有限公司 金属带连续退火或镀锌生产线的操作方法
US9616488B2 (en) 2011-09-16 2017-04-11 Benteler Automobiltechnik Gmbh Method for producing structural components and chassis components by hot forming, and heating station
EP2460897A4 (en) * 2009-07-29 2017-07-12 JFE Steel Corporation Process for production of high-strength cold-rolled steel sheet having excellent chemical conversion processability
EP3305941A1 (de) * 2016-10-07 2018-04-11 SEPIES GmbH Verfahren zur herstellung einer oxidschicht auf einer metalloberfläche
US10806343B2 (en) 2015-09-07 2020-10-20 Ablacon Inc. Systems, devices, components and methods for detecting the locations of sources of cardiac rhythm disorders in a patient's heart

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JP5614035B2 (ja) * 2009-12-25 2014-10-29 Ｊｆｅスチール株式会社 高強度冷延鋼板の製造方法
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US9322598B2 (en) 2016-04-26
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EP1979495A2 (en) 2008-10-15
JP5268650B2 (ja) 2013-08-21
RU2008135237A (ru) 2010-03-10
ATE516372T1 (de) 2011-07-15
BRPI0707378B1 (pt) 2014-03-18
PL1979495T3 (pl) 2011-12-30
CN101448963B (zh) 2010-10-13
WO2007087973A2 (en) 2007-08-09
EP1979495B1 (en) 2011-07-13
WO2007087973A8 (en) 2008-08-14
JP2009525401A (ja) 2009-07-09
BRPI0707378A2 (pt) 2011-05-03
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CA2637847C (en) 2015-03-31
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KR20080109737A (ko) 2008-12-17
CN101448963A (zh) 2009-06-03

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