• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The subject of this invention is a method for winding a metal strip (7) 1 wherein the metal strip (7) heat-treated immediately before winding in a furnace (5) and fed at a discharge speed of a coiler (9) and wound up there warm with a predetermined temperature becomes. According to the invention, the future discharge speed of the metal strip (7) and the heat losses of the metal strip (7) between the furnace (5) and the reel (9) are calculated using a predictive model and the furnace (5) is thus regulated1 that the metal strip (7) is wound up at the specified temperature with a maximum deviation of +/- 5 ° C.
    公开号:AT519995A2
    申请号:T50450/2017
    申请日:2017-05-29
    公开日:2018-12-15
    发明作者:Ing Dipl (Fh) Thomas Hofbauer；Leeber Florian；Kautz Walter；Ing Martin Fein Dipl
    申请人:Andritz Ag Maschf；
    IPC主号:
    专利说明:

    METHOD FOR REGULATING THE DEVELOPING TEMPERATURE OF A
    METAL STRIP
    The subject of this invention is a method for winding a metal strip, wherein the metal strip is heat treated directly before winding in a furnace, fed at a discharge speed of a coiler and wound there warm with a predetermined temperature.
    In the manufacture of metal bands, it has proven to be very useful for certain metals and metal alloys when wound up warm. This strip treatment step, also known as preaging, takes place, for example, at the end of modern annealing lines for aluminum strips. The strips are heated by reheating in a Preaging oven. This allows such a tempered winding. Due to the tempered winding and the slow cooling of the collar, the material properties of the metal strip can be improved, and it is very important that the metal strip is wound as accurately as possible at the defined temperature.
    The metal strips are usually fed in the form of frets of the annealing line, unwound and wound up again at the end of the line. In order to allow continuous operation in the annealing line, the end of the previous strip is connected to the beginning of the subsequent strip, hereafter referred to as a strip joint, for example welded or stapled. The winding of the metal bands at the end of the line can be done at a high speed, here are outlet speeds in the range of 200 m / min possible, for a bunch change and for cutting the
    Metal strip but the discharge speed must be significantly reduced, in part, the
    Metal bands are also stopped for a short time, to
    Example for setting the trimming shear. So that
    Metal strip can still pass the annealing furnace continuously at a constant speed, before and after the annealing furnace, a tape storage (looper) is arranged, which buffers the different inlet and outlet speeds of the metal strip.
    As already mentioned above, in the outlet section often another oven is arranged, which is also called Preaging oven. This oven is also known in the art as Bake-hardening Furnace, Pre-Bake Furnace, Reheating Furnace or Paint-bake Furnace. There, the metal strip is heated, for example to a temperature between 50 ° C and 150 ° C, so that it can be wound up at a specified temperature. Due to the changing discharge speed, the residence times of the metal strip in the Preaging furnace and thus also its temperature change. In existing systems, therefore, the strip temperature is measured just before the coiler and based on the temperature measured there, the Preaging furnace is controlled so that the strip temperature at the coiler remains as constant as possible.
    With this control, however, the belt temperature can only be kept constant at + / - 10 ° C, because the furnace responds quite sluggishly. The achievable with it
    However, belt temperature accuracy is too inaccurate for some applications, as a deviation of 1 to 2 ° C may already have an effect on the material properties.
    The invention is therefore based on the object
    To provide a method by which the belt temperature during winding can be controlled more accurately.
    This object is achieved by a winding method in which a predictive model, the future discharge speed of the metal strip and the heat losses of the metal strip between the furnace and the coiler are calculated, then the furnace is controlled so that the metal strip at the specified temperature with a maximum Deviation of +/- 5 ° C is wound.
    By this forward-looking modeling so the future outflow speed of the metal strip and the dependent of the discharge speed heat losses before the coiler is used to control the oven before changing the discharge speed. This premature intervention in the system allows the outlet temperature to be maintained very accurately, ideally even to less than +/- 2 ° C.
    Mostly in the oven, the metal strip is heated by means of hot air, which is blown onto the metal strip via fans. By changing the air temperature, for example by changing the burner power or by changing the fan speed, the desired amount of heat can be transferred to the belt and thus the belt temperature can be controlled.
    It is also conceivable that the oven will heat through
    Transmits radiation (e.g., infrared emitters) or electromagnetic effects (e.g., eddy currents, induction) to the metal strip. The regulation of these ovens could then be done easily via the supplied electrical power.
    The method according to the invention is particularly suitable for aluminum strips.
    The outward speed of the metal strip is preferably also controlled by the predictive model, so that an optimum fill level in the strip store is always maintained.
    In the predictive model are preferably the following
    Parameters for the control of strip temperature taken into account: - the set coiler temperature - the production speed - the outfeed speed of the metal strip - the strip thickness - the strip width - the outlet strip storage level - the strip temperature at the inlet to the furnace (Preaging
    Oven) - the belt temperature at the outlet of the oven - the belt temperature at the exit of the PMT (Peak Metal Temperature) dryer / oven - the ambient air temperature in the outlet area - the belt lengths between the PMT dryer, the oven and the coiler - the scrap lengths prior to and after the tape connection must be cut out - the number of samples that need to be cut out before and after the tape connection - the position of the tape connection - the temperature at the pulley before the reel - with several reels: which reel is in use
    Of course, not all of these parameters need to be considered by the model.
    In addition to controlling the coiling temperature of the metal strip, the following parameters may also preferably be controlled by the predictive model: the metal strip outlet speed, the oven temperature, the heat transfer in the oven, the discharge hopper level, the belt temperature at the inlet to the oven, if a PMT dryer - the belt temperature at the outlet of the furnace - the belt temperature at the exit of the PMT dryer, if present - the cooling of the furnace by controlling the supply of ambient air to the furnace
    The following is the invention of a
    Embodiment described.
    In Fig. 1, a part of an annealing line is shown. The metal strip 7 passes through an annealing furnace 10, a chemical treatment section (pickling section) 1 and a PMT dryer 2 (peak metal temperature dryer) at a constant speed (process speed). The process speed is in the range of 120 m / min. the
    Tape storage 3, the metal strip 7 is continuously fed at a constant speed and it leaves this with a discharge speed, which changes in operation. In the normal course of the federal exchange, the tape speed, for example, of
    Process speed (120 m / min)
    Cutting speed (30 m / min),
    Scrap cutting speed (50 m / min) and up
    Threading speed (30 m / min) can be reduced. During this period, the discharge strip storage 3 is filled. Following this, the discharge hopper 3 is emptied at a passing speed (160-200 m / min) before the outfeed speed is reduced again to process speed (120 m / min).
    In the outlet section 4, the metal strip 7 is heated in an oven 5, passed over a deflection roller 8 and fed to the coiler 9. There, the metal strip 7 is wound up warm at a specified temperature. This predetermined temperature is in the range of 40 ° C to 150 ° C, preferably in the range of 50 ° C to 130 ° C. For a bunch change, the belt speed is reduced and the metal belt is severed with the outlet shears 6. The new beginning of the tape is then wound warm over a second reel 9, which is located behind the first reel 9.
    In order to be able to comply exactly with the predetermined temperature at the reel, the future discharge speed of the metal strip and the heat losses of the metal strip between the furnace 5 and the reel 9 are calculated via the predictive model. The oven 5 is then controlled so that the metal strip is wound up at the specified temperature with a maximum deviation of +/- 5 ° C. The foresighted consideration of
    Boundary connection (e.g., stitching or weld) allows for predictive modeling of the
    Outlet speed, the outlet storage level, the belt temperature at the outlet of the oven 5 and the coiling temperature, taking into account the heat losses between the oven outlet and reel. 9
    权利要求:
    Claims (10)
    [1]
    claims
    A method of winding a metal strip (7), wherein the metal strip (7) is heat-treated immediately before winding in an oven (5) and fed at a discharge speed to a coiler (9) and is warm-wound there at a predetermined temperature, characterized in that the future discharge speed of the metal strip (7) and the heat losses of the metal strip (7) between the oven (5) and the coiler (9) are calculated by means of a predictive model, and then the oven (5) is controlled such that the Metal strip (7) is wound up at the specified temperature with a maximum deviation of +/- 5 ° C.
    [2]
    2. The method according to claim 1, characterized in that the metal strip (7) is wound with a maximum deviation of + / - 2 ° C from the predetermined temperature.
    [3]
    3. The method according to claim 1 or 2, characterized in that in the oven (5) the metal strip (7) by means of hot air, which is blown on fans on the metal strip (7), is heated and that the furnace (5) is controlled by changing the air temperature or changing the fan speed.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that an aluminum strip is wound up.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the predetermined temperature during winding in the range of 40 ° C to 150 ° C, preferably in the range of 50 ° C to 130 ° C is set.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the predictive model takes into account the strip thickness and the bandwidth.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the winding temperature of the metal strip (7) is measured and taken into account by the predictive model for the control of the furnace (5).
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the ambient air temperature between the furnace (5) and reel (9) is measured and taken into account by the predictive model for the control of the furnace (5).
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the belt temperature measured before entering the furnace (5) and / or after exiting the furnace (5) and the predictive model for the control of the furnace (5 ) is taken into account.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the outflow speed of the metal strip (7) is controlled by the predictive model.
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    同族专利:
    公开号 | 公开日
    HUE052799T2|2021-05-28|
    AT519995B1|2021-04-15|
    US20180340246A1|2018-11-29|
    RS61144B1|2020-12-31|
    PL3409811T3|2021-03-08|
    SI3409811T1|2020-11-30|
    AT519995A3|2021-03-15|
    US10961612B2|2021-03-30|
    ES2834452T3|2021-06-17|
    DK3409811T3|2021-01-04|
    EP3409811A1|2018-12-05|
    EP3409811B1|2020-09-30|
    HRP20202009T1|2021-05-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2457696A1|1973-12-11|1975-06-12|Gen Electric|CONTROL SYSTEM FOR BELT TEMPERATURE|
    WO2008078908A1|2006-12-22|2008-07-03|Posco|Temperature controlling method and apparatus in hot strip mill|
    CN103962414A|2013-01-28|2014-08-06|宝山钢铁股份有限公司|Coiler wrapper roller ladder-speed control method and control system thereof|
    JP2015066587A|2013-09-30|2015-04-13|株式会社日立製作所|Rolled-material rolling-up-temperature control device and rolled-material rolling-up-temperature control method|
    US3517916A|1966-11-14|1970-06-30|Sunbeam Equip|Aluminum annealing furnace|
    US3604234A|1969-05-16|1971-09-14|Gen Electric|Temperature control system for mill runout table|
    JP2764176B2|1989-02-09|1998-06-11|株式会社神戸製鋼所|Continuous annealing furnace incorporating reheating device|
    US5718780A|1995-12-18|1998-02-17|Reynolds Metals Company|Process and apparatus to enhance the paintbake response and aging stability of aluminum sheet materials and product therefrom|
    JP2001026851A|1999-07-16|2001-01-30|Sky Alum Co Ltd|Manufacture of 6000 aluminum plate excellent in curing performance for paint baking|
    US7310981B2|2003-02-25|2007-12-25|Siemens Aktiengesellschaft|Method for regulating the temperature of strip metal|
    CN100998995A|2006-09-06|2007-07-18|中铝西南铝板带有限公司|Temperature control system of milling uluminium/aluminium alloy coiled material and control method|
    JP4909899B2|2007-02-09|2012-04-04|東芝三菱電機産業システム株式会社|Process line control device and control method thereof|
    EP2287345A1|2009-07-23|2011-02-23|Siemens Aktiengesellschaft|Method for controlling and/or regulating an induction oven for a roller assembly, control and/or regulating device for a roller assembly and roller assembly for producing rolled goods|
    EP2386365A1|2010-05-06|2011-11-16|Siemens Aktiengesellschaft|Operational method for a finishing train with prediction of transport speed|
    DE102013225579A1|2013-05-22|2014-11-27|Sms Siemag Ag|Device and method for controlling and / or regulating an annealing or heat treatment furnace of a metal material processing line|CN109492335B|2018-12-12|2020-12-08|中国地质大学（武汉）|Method and system for predicting furnace temperature of annealing furnace|
    DE102019108311A1|2019-03-29|2020-10-01|Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh|Device and method for warming up and winding up a metal strip|
    EP3959346A1|2019-04-23|2022-03-02|Velocium Abs Corp.|Line speed dependent control of a furnace for heat treating aluminum alloy sheet|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50450/2017A|AT519995B1|2017-05-29|2017-05-29|Process for regulating the winding temperature of a metal strip|ATA50450/2017A| AT519995B1|2017-05-29|2017-05-29|Process for regulating the winding temperature of a metal strip|
    ES18169697T| ES2834452T3|2017-05-29|2018-04-27|Procedure for controlling the winding temperature of a metal tape|
    PL18169697T| PL3409811T3|2017-05-29|2018-04-27|Method for controlling the coiling temperature of a metal strip|
    HUE18169697A| HUE052799T2|2017-05-29|2018-04-27|Method for controlling the coiling temperature of a metal strip|
    EP18169697.2A| EP3409811B1|2017-05-29|2018-04-27|Method for controlling the coiling temperature of a metal strip|
    SI201830134T| SI3409811T1|2017-05-29|2018-04-27|Method for controlling the coiling temperature of a metal strip|
    DK18169697.2T| DK3409811T3|2017-05-29|2018-04-27|Method for regulating the winding temperature of a metal strip|
    RS20201452A| RS61144B1|2017-05-29|2018-04-27|Method for controlling the coiling temperature of a metal strip|
    US15/989,329| US10961612B2|2017-05-29|2018-05-25|Method for controlling the coiling temperature of a metal strip|
    HRP20202009TT| HRP20202009T1|2017-05-29|2020-12-15|Method for controlling the coiling temperature of a metal strip|
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