EP2671035B1 - Verfahren zum kontrollieren einer schutzgasatmosphäre in einer schutzgaskammer zur behandlung eines metallbandes - Google Patents

Verfahren zum kontrollieren einer schutzgasatmosphäre in einer schutzgaskammer zur behandlung eines metallbandes Download PDF

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Publication number
EP2671035B1
EP2671035B1 EP12715806.1A EP12715806A EP2671035B1 EP 2671035 B1 EP2671035 B1 EP 2671035B1 EP 12715806 A EP12715806 A EP 12715806A EP 2671035 B1 EP2671035 B1 EP 2671035B1
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Prior art keywords
chamber
protective gas
seal
pressure
gas
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EP12715806.1A
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German (de)
English (en)
French (fr)
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EP2671035A1 (de
Inventor
Martin HAMMAN
Jerome VALLEE
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Andritz Technology and Asset Management GmbH
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Andritz Technology and Asset Management GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/003—Supply-air or gas filters
    • 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
    • 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
    • C21D9/562—Details
    • C21D9/565—Sealing arrangements
    • 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
    • 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
    • F27B9/40—Arrangements of controlling or monitoring 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

Definitions

  • the subject of this invention is a method for controlling the atmosphere in a protective gas chamber for the continuous treatment of metal strips, wherein the metal strip is guided via locks in and out of the protective gas chamber and wherein at least one of the locks has two or more sealing elements for the passing metal strip, so that forms at least one sealing chamber between the sealing elements.
  • the tape is protected against oxidation by using a reducing atmosphere of a nitrogen-hydrogen mixture.
  • the hydrogen content in the whole furnace is kept below 5%.
  • the furnace must be sealed against the environment and against other aggregates by appropriate locks.
  • single seals are used, which are formed by a pair of metallic sealing rolls, or a pair of sealing flaps, or a combination of a sealing flap and a sealing roll.
  • the metal strip is then fed through the nip / flap gap into the furnace.
  • double seals with nitrogen injection.
  • This is a double pair of metal sealing rolls or a double pair of flaps, or a double sealing flap-type sealing roll device or a combination of two sealing devices mentioned above, with nitrogen being injected into the space between the two sealing devices.
  • the nitrogen is introduced at a fixed or adjustable by the operator flow rate. There is no automatic regulation of the flow rate in relation to the process parameters.
  • Such sealing locks are used, for example, in continuous annealing plants and in continuous galvanizing plants in order to achieve a separation between the furnace atmosphere and the outside area (inlet seals or spout nozzle seal) and between two different combustion chambers. In this case, for example, a combustion chamber with direct firing and the second combustion chamber can be heated by means of jet blasting.
  • gaskets provide satisfactory results when gas flow through the airlock in a particular direction must be avoided, but with relatively high gas flow in the opposite direction.
  • the flow of combustion products from a direct firing furnace into a blast furnace heated furnace is prohibited, but larger amounts of gas may flow through in the opposite direction.
  • a discharge of exhaust gases from the directly fired furnace is prohibited to the outside, but a certain air flow from the environment is allowed in the oven.
  • furnace chambers fired with lance tubes avoid the entry of air, allowing a certain amount of inert gas to escape from the furnace into the environment. The same applies to the trunk area when the zinc pot is removed.
  • the gas flow rate between two furnace chambers through conventional gates will be in one direction at zero and in the opposite direction in the range of 200 to 1000 Nm 3 / h.
  • Such flow rates are only achieved if the pressure in both furnace chambers can be controlled within a certain tolerance. But if in one of the two furnace chambers, the pressure fluctuates outside this tolerance, the lock is no longer effective.
  • the simple seals do not cope satisfactorily with the pressure fluctuations occurring under changing operating conditions.
  • the chemical composition of the atmosphere gas can not be controlled precisely because unavoidable pressure fluctuations in both chambers would cause an alternating atmosphere gas flow in one direction or the other.
  • a conventional double seal with injection of a constant amount of nitrogen is also sensitive to the pressure fluctuations in the combustion chambers.
  • the chemical composition of the atmosphere gas in the combustion chambers can not be controlled precisely because the injected nitrogen flows alternately into one chamber, or into the other chamber, or into both chambers, depending on the pressure conditions.
  • these conventional sealing systems do not adequately separate the atmosphere gas and sometimes result in a substantial increase in the atmosphere gas consumption.
  • the JP 8 003652 A discloses a method for controlling the atmosphere of a preheating furnace of an annealing line by means of a sealing chamber.
  • the pressure in the furnace and in the sealing chamber is measured and the pressure in the sealing chamber is regulated so that it is always higher than the pressure in the furnace. This prevents gas from flowing out of the furnace, so that no water vapor contained in the furnace gas can condense on the seals and drip onto the metal strip.
  • the inlet seal usually consists of a pair of sealing rolls of metal and a series of curtains.
  • the atmospheric separation within the furnace is normally through a simple opening in a chamotte wall and the exit seal is either soft coated rolls (hypalon or elastomer) or refractory fibers.
  • Such a sealing system has the disadvantage that in the inlet seal a permanent leakage of hydrogen-containing atmosphere gas through the nip (1 to 2 mm) takes place. This gas is constantly burning.
  • the inner seal leads to a poor separation performance due to the opening size (100 to 150 mm) and the outlet seal can not be used at high temperature> 200 ° C.
  • the object of the invention is to provide a control method for the control of the gas flow through the lock, which ensures a high degree of atmospheric gas separation and reduces the atmospheric gas consumption
  • This object is achieved by a control method in which the gas pressure in at least one protective gas chamber and in the sealing chamber of the lock is measured and in which the pressure in the sealing chamber is controlled in such a way that during operation of the differential pressure (.DELTA.P seal ) between the protective gas chamber and the sealing chamber is maintained as much as possible above or below a predetermined value for the critical differential pressure ( ⁇ P seal, k ).
  • the critical differential pressure ( ⁇ P seal, k ) is the value at which the gas flow between protective gas chamber and lock reverses. At the critical differential pressure ( ⁇ P seal, k ), no gas flow should therefore take place between the protective gas chamber and the sealing chamber.
  • the critical differential pressure ( ⁇ P seal, k ) need not necessarily have the value zero, although at this value, the pressures in the protective gas chamber and in the seal chamber would be the same, but it can still lead to a gas flow between these chambers, as the metal strip transported on its surface a certain amount of gas.
  • the predetermined value for the critical differential pressure ( ⁇ P seal, k ) is calculated using a mathematical model, which preferably takes into account the speed of the metal strip, the gap opening of the two sealing elements, the properties of the protective gas and the thickness of the metal strip. Due to the small volume of the sealing chamber, the pressure in this chamber can be controlled quickly and precisely by injecting or removing a small amount of gas.
  • the differential pressure ( ⁇ P seal ) Due to the precise pressure regulation in the sealing chamber, the differential pressure ( ⁇ P seal ) according to the invention is kept close to the value for the critical differential pressure ( ⁇ P seal, k ). As a result, the flow rate of the atmosphere gas into or out of the protective gas chamber is reduced to a minimum. It is advantageous if the set differential pressure (.DELTA.P seal, k ) is maintained at a constant distance from the critical differential pressure (.DELTA.P seal, k ), but the distance should be kept as small as possible. Typically, the critical differential pressure ( ⁇ P seal, k ) is between 0 and 100 Pa, and the distance between the set and critical differential pressures is between 5 and 20 Pa.
  • This method allows a high separation efficiency of the atmospheres between Schutzgaskammem at relatively low shielding gas consumption (from 10 to 200 Nm 3 / h). It also allows a good separation of the protective gas chamber from the environment.
  • the pressure in the seal chamber can be controlled either by a control valve and a gas supply or by a control valve and a vacuum source.
  • the vacuum source may be, for example, a suction fan, a fireplace or the environment.
  • the inventive method is particularly well suited for NGO silicon steel lines.
  • a 95% H 2 atmosphere in a chamber must be separated from a 10% H 2 atmosphere in a second chamber, with hydrogen consumption through the lock being less than 50 Nm 3 / h.
  • the process is well suited for rapid cooling in continuous annealing lines or galvanizing lines for carbon steel.
  • an atmosphere with 30 must - 80% H 2 are separated from an atmosphere containing 5% H 2, wherein the hydrogen consumption should be less than through the lock 100 Nm 3 / h.
  • the transfer of zinc dust from the trunk into the furnace can also be minimized in galvanizing lines, particularly in systems for zinc-aluminum coating of metal strips.
  • the lock according to the invention is arranged between the protective gas chamber and a further treatment chamber with a protective gas atmosphere.
  • the metal strip can either be passed first through the further treatment chamber and then through the protective gas chamber, or it can first be passed through the protective gas chamber and then through the further treatment chamber.
  • FIG. 1 are the secondary chamber 1 and the protective gas chamber 2 darg Horwitz with the intervening lock 4.
  • the lock 4 consists of a first sealing element 5 and of a second sealing element 6, between them is the sealing chamber 7.
  • compositions of the protective gas (N 2 content, H 2 content, dew point) in the two chambers 1 and 2 and the respective pressure P1 and P2 in the chambers 1 and 2 are controlled by two separate mixing stations. This control of the mixing stations is done by conventional controls. Ie the chemical
  • the composition of the protective gas atmosphere is controlled by adjusting the N 2 , H 2 , and the H 2 O content in the injected atmosphere gas and the pressure control is carried out by adjusting the flow rate of the injected into the chambers 1, 2 atmosphere gas.
  • the atmosphere gas is discharged through fixed or adjustable openings from the chambers 1, 2.
  • the sealing elements 5 and 6 can each be formed by two rollers or two flaps or a roller and a flap, between which the metal strip 3 is passed.
  • the gap between the rollers or flaps is defined taking into account the properties (chemical composition, temperature) of the atmosphere gas in chamber 1 (or 2) and the strip thickness. It can be fixed or adjustable, depending on the variation in the properties of the atmosphere gas and the band dimensions. If the gap is adjustable, it is preset according to strip thickness, chemical composition of the atmosphere gas and according to the strip temperature.
  • the size of the opening in the sealing elements 5 and 6 is dependent on the gap, the band dimensions (width, thickness), as well as the remaining construction-related openings. In order to achieve a good sealing performance, the opening in the sealing elements 5, 6 must be correspondingly small.
  • the pressure P D in the sealing chamber 7 between the two sealing elements 5, 6 can be adjusted by the control valve 10.
  • the control valve 10 regulates the flow rate of the injected or discharged into the seal chamber 7 gas.
  • the control valve 10 is connected to a gas supply 8, the pressure control in the seal chamber 7 is thus effected via a control of the gas supply into the seal chamber. 7
  • the chamber pressures P1 and P2 are controlled by two independent pressure control circuits.
  • the pressure P D in the seal chamber 7 and in the protective gas chamber 2 is measured.
  • the pressure P D is kept close to the pressure P2 in the protective gas chamber 2.
  • the ⁇ P seal is set with P D - P2.
  • the pressure P D is controlled so that ⁇ P seal remains largely constant, even if the pressure P2 varies.
  • the aim is to prevent the entry of atmospheric gas through the lock 4 into the protective gas chamber 2, so that the chemical composition in this chamber can be regulated.
  • the aim is also to minimize the escape of atmospheric gas from the protective gas chamber 2, so that the gas consumption of the protective gas chamber 2 can be minimized.
  • FIG. 2 shows the pressure curve in the chambers 1, 2, and7.
  • the pressure P1 in the sub-chamber 1 is set lower than the pressure P2 in the protective gas chamber 2, while the pressure in the sealing chamber P D is set between P1 and P2 but only slightly lower than the pressure P2 in the protective gas chamber 2.
  • ⁇ P seal is negative here.
  • the flow rate F2 of the atmosphere gas into or out of the protective gas chamber 2 is regulated by the differential pressure ⁇ P seal .
  • ⁇ P seal is kept below the value for the critical differential pressure ⁇ P seal k , no atmosphere gas enters the protective gas chamber 2.
  • the flow rate F D is determined by the pressure control loop for control of ⁇ P seal , while the flow rate F1 results from F2 + F D.
  • This control strategy is suitable for applications in which the chemical composition in the protective gas chamber 2 must be optimally controlled.
  • this strategy can be used well in continuous annealing plants (CAL) and in continuous high-G 2 galvanizing plants (CGL).
  • the chamber with the high H 2 content forms the aforementioned protective gas chamber 2.
  • This control strategy is also suitable for the warm-up, dip and radiant tube cooling chambers with high H 2 content in the electrical steel heat treatment. Again, the chamber with the high H 2 content forms the chamber 2.
  • the aim is to prevent leakage of atmosphere gas from the protective gas chamber 2, so that the secondary chamber 1 is not contaminated by a component from the protective gas chamber 2.
  • the entry of atmospheric gas into the protective gas chamber 2 should also be minimized.
  • FIG. 3 shows the pressure curve in the chambers 1, 2 and 7, wherein the pressure P1 in the secondary chamber 1 is set to be lower than the pressure P2 in the protective gas chamber 2.
  • the pressure P D in the seal chamber 7 is set higher than P1 and P2, but only slightly higher than the pressure P2 in the protective gas chamber 2.
  • ⁇ P seal is positive here.
  • the flow rate F2 of the atmosphere gas into or out of chamber 2 is regulated via the ⁇ P seal value.
  • ⁇ P seal is kept above the value for the (calculated) critical differential pressure ⁇ P seal k , no atmosphere gas escapes from the protective gas chamber 2.
  • ⁇ P seal k By regulating ⁇ P seal as close as possible to the value ⁇ P seal k , the flow rate F2 of the chamber 2 flowing in chamber 2 Atmospheric gases are minimized.
  • the flow rate F D is determined by the pressure control loop for control of ⁇ P seal , while the flow rate F1 from F D - F2 results.
  • This control strategy is suitable for applications in which no atmosphere gas may escape from the protective gas chamber 2 and in which the protective gas chamber 2 may not be contaminated by atmospheric gas from the secondary chamber 1.
  • it can be used to control the input or output shunt in FAL, CAL and CGL.
  • the furnace also forms the protective gas chamber 2. It is also suitable for lock control in zinc-aluminum coating processes (the trunk forms the protective gas chamber 2) or for processes with chambers with different dew points. The chamber with the high dew point then forms the protective gas chamber 2.
  • FIG. 4 Now, a variant is shown, in which the sealing chamber 7 is connected to a vacuum source 9. In FIG. 4 takes place in contrast to Fig.1 the regulation of the gas pressure in the sealing chamber 7 via a gas discharge F D.
  • the pressure P D in the sealing chamber 7 is continuously adjusted.
  • the flow rate F D of the outflowing gas is controlled by a control valve 10, wherein the Unterduck is generated by means of a suction fan or by the natural chimney draft.
  • the metal strip runs out of the protective gas chamber 2 into the lock 4.
  • the control strategy does not depend on the direction of strip travel.
  • the pressure in the seal chamber P D is controlled so that ⁇ P seal remains as constant as possible, even if the pressure P2 varies in the protective gas chamber 2.
  • the aim is to avoid leakage of atmosphere gas from the protective gas chamber 2, so that the secondary chamber 1 is not contaminated by a component from the protective gas chamber 2, but also to minimize the entry of atmospheric gas into the protective gas chamber 2, so that the chemical composition in the protective gas chamber 2 can be regulated.
  • FIG. 5 shows the pressure curve in the chambers 1, 2 and 7 for a lock 4 according to Fig. 4 ,
  • the pressure P1 in the sub chamber 1 is set to be higher than the pressure P2 in the protective gas chamber 2.
  • the pressure P D in the seal chamber 7 is set between P1 and P2, but only slightly higher than the pressure P2 in the protective gas chamber 2.
  • the flow rate F2 of the atmosphere gas into or out of chamber 2 is regulated via the ⁇ P seal value.
  • ⁇ P seal is kept above the critical value for the differential pressure ⁇ P seal, k , no atmosphere gas escapes from the protective gas chamber 2. If the size ⁇ P seal is controlled as close as possible to the value ⁇ P seal k , then the flow rate F2 of the atmospheric gas flowing into the protective gas chamber 2 can be minimized.
  • the flow rate F D is determined by the pressure control loop for control of ⁇ P seal , while the flow rate F1 is F2 + F D.
  • This control strategy is suitable for installations in which no atmosphere gas is allowed to escape from the protective gas chamber 2 and in which the inflow into the protective gas chamber 2 must be minimized.
  • the applications are the same as the applications for Fig. 3 However, in the case that the pressure P2 in the protective gas chamber 2 is lower than in the auxiliary chamber. 1
  • the aim is to avoid the entry of atmosphere gas into the protective gas chamber 2 (so that the chemical composition in the protective gas chamber 2 can be controlled), but also to minimize the escape of atmospheric gas from the protective gas chamber 2 (so as to minimize the gas consumption of the protective gas chamber 2) can).
  • FIG. 6 shows the pressure curve in the chambers 1, 2 and 7.
  • the pressure P1 in the secondary chamber 1 is set higher than the pressure P2 in the protective gas chamber 2, while the pressure P D in the sealing chamber 7 is less than P1 and P2, but only slightly lower as the pressure P2 in the protective gas chamber 2, is set.
  • ⁇ P seal is negative here.
  • the flow rate F2 of the atmosphere gas into or out of chamber 2 is regulated via the ⁇ P seal value.
  • This control strategy is well suited if the chemical composition in the protective gas chamber 2 must be optimally controlled, but the outflow of atmospheric gas from the protective gas chamber 2 must be minimized or if the chemical composition in both chambers 1, 2 must be optimally controlled.
  • the mathematical model is based on a formula that represents the relationship between the parameters. The calculation requires little computational effort and can therefore be integrated into furnace controls.
  • the parameters of the mathematical model are tuned by means of computer-controlled simulation software in offline mode.
  • This critical value ⁇ P seal, k serves as a reference for the pressure regulation in the seal chamber 7.
  • the setpoint for the differential pressure ⁇ P seal is based on the calculated critical differential pressure ⁇ P seal, k , as described in the examples above. If the differential pressure ⁇ P seal is higher than this critical value ⁇ P seal, k , then the atmosphere gas flows out of the seal chamber 7 into the protective gas chamber 2. It is important to take into account the respective signs of the differential pressures ⁇ P seal and ⁇ P seal, k , "Higher” or “above” is synonymous with the phrase "further in the positive number range" lying.
  • differential pressure .DELTA.P seal lies below the value for the critical differential pressure .DELTA.P seal, k , the atmosphere gas flows out of the protective gas chamber 2 into the seal chamber 7.
  • the differential pressure ⁇ P seal can also be negative (eg in Fig. 2 and Fig. 6 ).
  • the remark that the differential pressure ⁇ P seal is below the value for the critical differential pressure ⁇ P seal, k is then to be understood as meaning the value for the differential pressure ⁇ P seal continues to be negative than the critical differential pressure ⁇ P seal, k .
  • the mathematical model is used on the one hand for the calculation of the gap to be set of the two sealing elements 5, 6 taking into account the properties of the atmosphere gas and the strip thickness. On the other hand, it is used for the calculation of the value for the critical differential pressure ⁇ P seal, k between the seal chamber 7 and the protective gas chamber 2. With the aid of the calculated critical differential pressure ⁇ P seal, k , the differential pressure ⁇ P seal (nominal value) to be set is then determined.
  • the adjustment parameters calculated with the mathematical model form the setpoint values for the control of the lock.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Furnace Details (AREA)
  • Coating With Molten Metal (AREA)
  • Physical Vapour Deposition (AREA)
EP12715806.1A 2011-02-04 2012-01-30 Verfahren zum kontrollieren einer schutzgasatmosphäre in einer schutzgaskammer zur behandlung eines metallbandes Active EP2671035B1 (de)

Priority Applications (1)

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PL12715806T PL2671035T3 (pl) 2011-02-04 2012-01-30 Sposób kontrolowania atmosfery gazu ochronnego w komorze gazu ochronnego do przetwarzania taśmy metalowej

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ATA152/2011A AT511034B1 (de) 2011-02-04 2011-02-04 Verfahren zum kontrollieren einer schutzgasatmosphäre in einer schutzgaskammer zur behandlung eines metallbandes
PCT/AT2012/000013 WO2012103563A1 (de) 2011-02-04 2012-01-30 Verfahren zum kontrollieren einer schutzgasatmosphäre in einer schutzgaskammer zur behandlung eines metallbandes

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EP2671035A1 EP2671035A1 (de) 2013-12-11
EP2671035B1 true EP2671035B1 (de) 2014-12-03

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JP (1) JP6061400B2 (zh)
KR (1) KR101807344B1 (zh)
CN (1) CN103380346B (zh)
AT (1) AT511034B1 (zh)
BR (1) BR112013019485B1 (zh)
CA (1) CA2825855C (zh)
ES (1) ES2531482T3 (zh)
PL (1) PL2671035T3 (zh)
RU (1) RU2592653C2 (zh)
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DE102011079771B4 (de) 2011-07-25 2016-12-01 Ebner Industrieofenbau Gmbh Rollenwechselvorrichtung und Verfahren zum Wechseln einer Rolle für Öfen
CN103305744B (zh) * 2012-03-08 2016-03-30 宝山钢铁股份有限公司 一种高质量硅钢常化基板的生产方法
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DE102018124521A1 (de) * 2018-10-04 2020-04-09 Brückner Maschinenbau GmbH & Co. KG Behandlungsanlage für eine durch einen Behandlungsofen hindurchführbare flexible Materialbahn, insbesondere Kunststofffolie
CN112212676B (zh) * 2020-09-29 2022-06-07 安德里茨（中国）有限公司 料厚测量机构、闭环控制布料装置及烘干机
DE102021109326A1 (de) 2021-04-14 2022-10-20 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Wärmebehandlung zumindest eines Blechs aus einer weichmagnetischen Legierung

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JP2014505795A (ja) 2014-03-06
AT511034A1 (de) 2012-08-15
CA2825855C (en) 2018-05-01
ZA201306439B (en) 2014-10-29
KR101807344B1 (ko) 2017-12-08
CA2825855A1 (en) 2012-08-09
JP6061400B2 (ja) 2017-01-18
RU2013138601A (ru) 2015-03-10
EP2671035A1 (de) 2013-12-11
CN103380346A (zh) 2013-10-30
US8893402B2 (en) 2014-11-25
KR20140022003A (ko) 2014-02-21
BR112013019485A2 (pt) 2019-11-05
US20130305559A1 (en) 2013-11-21
WO2012103563A1 (de) 2012-08-09
ES2531482T3 (es) 2015-03-16
RU2592653C2 (ru) 2016-07-27
AT511034B1 (de) 2013-01-15
PL2671035T3 (pl) 2015-04-30
CN103380346B (zh) 2015-08-05

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