EP2999935A2 - Device and method for controlling and/or regulating an annealing or heat treatment furnace of a production line processing metal material - Google Patents
Device and method for controlling and/or regulating an annealing or heat treatment furnace of a production line processing metal materialInfo
- Publication number
- EP2999935A2 EP2999935A2 EP14726339.6A EP14726339A EP2999935A2 EP 2999935 A2 EP2999935 A2 EP 2999935A2 EP 14726339 A EP14726339 A EP 14726339A EP 2999935 A2 EP2999935 A2 EP 2999935A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- annealing
- control
- heat treatment
- measuring device
- treatment furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
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- 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
-
- 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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
-
- 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
Definitions
- the invention is directed to an apparatus for controlling and / or regulating an annealing or heat treating furnace of a metal material processing line comprising the annealing or heat treating furnace and at least one measuring device that detects at least one material characteristic of a strip material in the production line Glühoder heat treatment furnace and the at least one meter in a control and / or control circuit of an automated process control cooperate, which controls the annealing or heat treatment furnace in the context of a furnace control and / or controls.
- the invention is directed to a method for controlling and / or regulating an annealing or heat treatment furnace of a metal material processing production line, the annealing or heat treatment furnace, preferably at least one downstream of this in strip material processing direction rolling and / or stretching stand and at least one measuring device, the detects at least one material property of a strip material located in the production line, wherein the annealing or heat treatment furnace, preferably at least one downstream rolling and / or stretching stand and the at least one measuring device in a control and / or control circuit of an automated process control cooperate with which the annealing or heat treatment furnace is controlled and / or regulated as part of an oven control.
- metal strips are fed to an annealing furnace during an annealing treatment and exposed there to a temperature of 700-900 ° C. in order to prepare them, for example, cold-rolled strips so far that they can be processed well in the subsequent deep-drawing process and optionally a coating process.
- the invention is therefore based on the object to provide a solution with which an improvement of the process control over the prior art can be achieved.
- this object is achieved in that the at least one measuring device is arranged in Bandmaterialbearbeitungshchtung behind the annealing or heat treatment furnace and online recorded a mechanical material properties of the strip material reproducing and / or imaging measurement and this measured value as in particular data transmitting Signal transmitted to a control and / or control unit.
- This control and / or control unit learns on the basis of the past behavior of the furnace, the reaction of the furnace under changed conditions of the furnace and adjusts them to adjust the readings for upcoming bands. This reduces the dispersion of the measured values. Information about processes in front of the annealing furnace can be used for this learning process (be it measured values or set values).
- the above object is achieved in a generic method in that with the at least one measuring device online a mechanical material properties of the strip material reproducing and / or imaging measured value recorded and this measured value is transmitted as particular data transmitting signal to a control and / or control unit.
- This control and / or control unit learns on the basis of the past behavior of the furnace, the reaction of the furnace under changed conditions of the furnace and adjusts them to adjust the readings for upcoming bands. This reduces the dispersion of the measured values.
- Information about processes in front of the annealing furnace can be used for this learning process (be it measured values or set values).
- the particular data-transmitting signal may be an electrical signal, an electronic signal, a signal in the form of a electromagnetic wave, a radio signal, a light signal or infrared signal, which is suitable to transmit measured values or information.
- the entire length of a heat treated or annealed strip material is detected at the furnace exit or in the strip processing direction behind the annealing or heat treatment furnace.
- the setting of the furnace can take place such that the following properties have the mechanical properties in the desired value window, ie have only a tolerated spread or scatter. Since the mechanical properties are permanently and continuously monitored during the performance of a process, the actual limits of the mechanical properties can also be used as limits of the control and / or measuring system.
- the process window is that range (from a minimum value to a maximum value) for an oven parameter (oven zone temperature, belt target temperature or belt speed), compliance with which in the production process results in the production of the required mechanical properties of the belt.
- the annealing cycles can be adjusted and the process windows changed. In the best case, it is no longer necessary to limit to previously defined parameters such as an annealing cycle and related limits.
- the dispersion of the mechanical properties over the entire annealing process is thus optimized and better adapted to the desired parameters and boundary conditions. This makes it possible, moreover, to go to the limits of, for example, the annealing temperature necessary or adapted to achieve the desired mechanical properties and thus to make the process more ecological or economical, in particular to be able to increase its productivity.
- the inventive type of measurement it is possible by the inventive type of measurement to better perform transitions between band material of different quality and to coordinate with each other, since each selected mechanical property of the respective Bandmatenals be preset as a relevant size and thus the overlap of the successive bands can be controlled.
- the measuring device or the measuring devices of the device according to the invention or of the method according to the invention can also be used for a certain period of time in order to determine the best process windows for the respective material quality, for example the respective steel grade.
- the invention provides that it comprises a rolling or stretching furnace downstream of the annealing or heat treatment furnace, which cooperates in the control and / or control circuit of the automatic process control with the annealing or heat treatment furnace and the at least one measuring device.
- the at least one measuring device is arranged in the strip processing direction behind the rolling and / or stretching stand, which the invention also provides.
- the invention further provides that the at least one measuring device is arranged in the strip material processing direction behind the annealing or heat treatment furnace and in front of one or the rolling and / or stretching stand.
- the at least one measuring device is arranged in the strip material processing direction behind the last mechanical processing device of the production line, which is the invention also provides.
- the influence of the entire preceding material processing or material treatment in the production line on the measured mechanical property of the strip material is used as the basis for controlling or controlling the furnace operation and / or the mechanical processing.
- a first measuring device is arranged in the strip material processing direction behind the annealing or heat treatment furnace and before the rolling and / or stretching stand, and a second measuring device is arranged behind the rolling and / or stretching stand.
- a second measuring device in the strip material processing direction behind the rolling and / or stretching stand, it is also possible to influence the mechanical processing stations which have one or more rolling stand (s), one or more stretching stand (s), skin pass mill ( e) or stretch levelers can be designed to determine the respectively measured mechanical property and in the control of both the annealing or heat treatment furnace as well as in the control of the mechanical processing stations or facilities, ie the rolling and / or stretching stand (s), to take into account. It is advantageous to measure with a measuring device arranged behind a rolling and / or stretching stand in the machining direction of the strip material insofar as the mechanical property of the strip can then be taken into account after a deformation process.
- a measuring device When two measuring devices are used, however, provision may also be made for a measuring device to be arranged in the band material processing direction in front of the annealing or heat treatment furnace and the second measuring device in the strip material processing direction directly behind the annealing or heat treatment furnace or behind that of the rolling and / or stretching stand mechanical processing is arranged.
- the respective measured values go to a control / regulation unit, which acts on the furnace control via a learning function and, depending on the case, on the mechanical processing.
- the invention provides that a first measuring device in strip material processing direction behind the annealing or heat treatment furnace and before the rolling and / or stretching stand is arranged and another measuring device is arranged in strip material processing direction before the annealing or heat treatment furnace.
- the invention is characterized in that a (second) measuring device is arranged downstream of the rolling and / or stretching stand in strip material processing apparatus and a further measuring device in strip material processing direction in front of the annealing or heat treatment furnace.
- the invention is also characterized by the fact that arranged in Bandmatenalbearbeitungsnchtung behind the annealing or heat treatment furnace first meter and / or arranged in Bandmatenalbearbeitungsnchtung before the annealing or heat treatment furnace further measuring device in feedback to the furnace control acts / act.
- the invention further provides for the, in the strip material processing direction behind the at least one rolling and / or stretching stand or behind a rolling and / or stretching stand arranged, in particular second, measuring device and / or the first or another measuring device, which in Band material processing direction is arranged before or immediately behind the annealing or heat treatment furnace, in feedback to the furnace control and the control of the at least one or associated rolling and / or stretching stand.
- a particularly useful measurement is the real-time online measurement. Therefore, the invention is further distinguished by the fact that the at least one measuring device, preferably all measuring devices, detect / record the measured value reproducing the mechanical material properties of the strip material by means of a real-time online measurement.
- the control and / or control circuit arises when the mechanical material properties of the strip material reproducing and / or imaging measurement in the context of a learning process in the control and / or control circuit, in particular in the furnace control and / or furnace control of Glüh - or heat treatment furnace, is fed back.
- an annealing or heat treatment furnace can be controlled and / or regulated in a particularly favorable and expedient manner if the control and / or control circuit comprises an oven model control shown therein and / or stored, which the invention also provides.
- the furnace model controller may include any type of model, from a simple linear model to a thermodynamic model with learning and adaptation function, any type of furnace model may find use as a furnace model controller for deposition.
- the control and / or control circuit comprises a material model.
- Useful furnace parameters which can be controlled with a control and / or control system designed according to the invention are, for example, the strip target temperature in the heating and / or cooling region of the annealing and / or heat treatment furnace, the belt speed in the process line, the furnace temperature or the furnace output of the glow and / or heat treatment furnace, the coolant loading of the processed strip material or the type of coolant.
- the invention is therefore further characterized in that the one or more furnace parameters at least one of the values band target temperature in the heating and / or cooling range of the annealing or heat treatment furnace, process window this band target temperature, belt speed, process window this belt speed, oven temperature, process window this oven temperature, oven temperature pattern (local and temporal furnace temperature distribution), furnace power, cooling rate, coolant loading or coolant type.
- a particularly suitable measuring device is a remanence measuring device, which is why the invention further provides that the at least one measuring device, preferably all measuring devices, is / are each a remanence measuring device which detects a magnetic quantity as the measured value.
- the measuring device which detects a mechanical property can also be designed as a laser ultrasound device or an electromagnetic ultrasound device or an X-ray transmission device.
- the device according to the invention and the method according to the invention are of particular advantage in the annealing or galvanizing of steel or aluminum material.
- the invention is therefore also characterized in that the device is part of a continuous annealing and / or galvanizing line for a steel or aluminum matehal.
- the method according to the invention is characterized in that the control and / or control circuit is determined by means of at least one measuring device arranged in the strip material processing direction behind the annealing or heat treatment furnace or behind the rolling and / or stretching stand and mechanical material properties of the strip material reproducing and / or imaging feedback in the furnace control and / or furnace control of the annealing or heat treatment furnace and / or the regulation and / or control of the rolling and / or stretching stand.
- a further measuring device arranged in the band material processing direction in front of the annealing or heat treatment furnace is detected online and in each case transmits a mechanical material properties of the strip material and / or imaged measured value and transmitted to the regulating and / or control unit, which the invention also provides.
- the invention is also distinguished by the fact that mechanical material properties are determined online by means of a (second) measuring device arranged in strip material processing direction behind or a rolling and / or stretching stand and a second or further measuring device arranged in strip material processing direction in front of or immediately behind the annealing or heat treatment furnace the band material reproducing and / or recorded measuring values and transmitted to the control and / or control unit.
- the measured value reflecting the mechanical material properties of the strip material is detected by means of a real-time online measurement and / or as part of a learning process in the control and / or control circuit, in particular in the furnace control and / or furnace control the annealing or heat treatment furnace is fed back, which the invention also provides.
- the device according to the invention is characterized in that the method is performed with a device according to one or more of claims 1-17.
- the single FIGURE shows, in the partial images a) to e), in each case schematically a production line designated overall by 1 in the form of a CAL (Continuous Annealing Line).
- This comprises the schematically illustrated elements annealing or heat treatment furnace 2, in each case one of the annealing or heat treatment furnace 2 downstream rolling stand 3, which is formed as a skin pass mill, and a strip in the strip material processing 5 this turn downstream drafting frame 4 in the form of a drafting jig.
- a first measuring device 7 is arranged, which detects at least one material property of the strip material 6.
- the measuring device 7 can be a remanence measuring device which detects a magnetic variable as the material property of the strip material 6.
- a second measuring device 8 arranged, which also has at least one material property, preferably the same material property as the first measuring device 7, the strip material 6 detected.
- a measured value reproducing the desired mechanical material property of the strip material 6 is determined. This can then be converted into measurement and control circuits not shown in detail or in a control and / or control circuit not shown in an electrical or data transmitting signal and the control and / or control circuit or individual measurement and control circuits that interact with this to be transmitted.
- the control and / or control circuit not shown in detail is part of an automated process control, the annealing or heat treatment furnace 2, but possibly also this Downstream rolling stand 3 and / or the stretching stand 4 controls and / or regulates.
- the measured values detected by the measuring devices 7 and / or 8 and / or 17 or electrical signals derived therefrom are fed back by means of corresponding control circuits 9, 10, 11, 12, 13 which are connected to the control and / or control circuit (not shown) acted upon or part of the automated process control, for controlling the annealing or heat treatment furnace 2 a furnace control and / or control of the rolling mill 3 and / or the control of the stretching stand 4 supplied, as in connection with the sub-images a) - e) below is explained.
- the first measuring device 7 and the second measuring device 8 or the further measuring device 17 determine or record the measured value reproducing and / or reproducing a mechanical material property of the strip material 6 online by means of a real-time online measurement.
- This respective measured value or an electrical signal derived therefrom is fed back into the control and / or control circuit of the production line 1, in particular in the furnace control and / or furnace control of the annealing or heat treatment furnace 2 in the context of a closed-loop process.
- this control and / or control circuit comprises an oven model depicted or created therein in the form of an oven model controller.
- the control and / or control circuit may include a material model.
- one or more furnace parameters are controlled with the learning control and / or control unit in relation to and / or in cooperation with the furnace control and / or furnace control such that a predetermined value or value range of the measured or determined mechanical material property or the determined mechanical material properties the strip material 6 is obtained or adjusted.
- These furnace parameters may be at least one of the values band target temperature in the heating and / or cooling range of the annealing or Heat treatment furnace 2, the belt speed, the furnace temperature, the furnace performance, the coolant, ie the manner of acting on the strip material 6 with a coolant, or the type of coolant act.
- the measuring devices 7, 8 and 17 can each be a remanence measuring device which detects a magnetic quantity as a measured value.
- the respective measuring device 7, 8 can also be of any other type of measuring device which enables the direct or indirect determination of mechanical properties of the strip material 6 observed therewith.
- the production line 1 shown in the partial images a) - e) of the figure is a continuous annealing and / or galvanizing line for a steel or aluminum material.
- a measuring device 7 is arranged between the annealing or heat treatment furnace 2 and the roll stand 3, which is fed back via a control loop 9 with the control and / or control circuit and in particular the furnace control.
- the second measuring device 8 is arranged downstream of the mechanical processing devices and thus behind the rolling stand 3 and the stretching stand 4 in the machining direction 5, which is fed back via the control loop 10 with the control and / or control circuit and acting on the control of both the furnace 2 and the rolling stand 3 and / or the stretching stand 4.
- the first measuring device 7 between the annealing or heat treatment furnace 2 and the rolling stand 3 and the second measuring device 8 in the processing direction 5 behind the stretching stand 4 are arranged.
- the control unit 18 receives measured values from the measuring device 7 and 8. These act in the context of the control loop 1 1 back to the annealing furnace 2 and the rolling stand 3 and the stretching stand 4.
- the measured values supplied by the measuring devices 7 and 17 to the control unit 18 are fed back via a control loop 12 to the control and / or control circuit of the annealing or heat treatment furnace 2.
- the embodiment according to the partial image e) shows an embodiment in which the second measuring device 8 is again arranged in Bandmaterialbearbeitungscardi 5 behind the stretching frame 4 and the other measuring device 17 before the annealing or heat treatment furnace 2.
- the measured values supplied by the second measuring device 8 and the further measuring device 17 to the control unit 18 are fed back in the context of a control loop 13 to the control and / or control circuits of the annealing or heat treatment furnace 2, the rolling stand 3 and the stretching stand 4.
- first measuring device 7 and second measuring device 8 or further measuring device 17 with control loops derived therefrom may also form other influencing factors than those illustrated.
- both the first measuring device 7 and the second measuring device 8 may act both on the furnace control and on the control of individual or all mechanical processing devices.
- all possible combinations of only partial action of the measuring devices and resulting control circuits on only individual devices or the furnace in the context of the control and / or control circuit are conceivable and possible.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013209410 | 2013-05-22 | ||
DE102013225579.9A DE102013225579A1 (en) | 2013-05-22 | 2013-12-11 | Device and method for controlling and / or regulating an annealing or heat treatment furnace of a metal material processing line |
PCT/EP2014/060505 WO2014187886A2 (en) | 2013-05-22 | 2014-05-22 | Device and method for controlling and/or regulating an annealing or heat treatment furnace of a production line processing metal material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2999935A2 true EP2999935A2 (en) | 2016-03-30 |
EP2999935B1 EP2999935B1 (en) | 2019-07-10 |
Family
ID=51863242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14726339.6A Active EP2999935B1 (en) | 2013-05-22 | 2014-05-22 | Device and method for controlling and/or regulating an annealing or a heat treatment furnace of a production line processing metal material |
Country Status (8)
Country | Link |
---|---|
US (1) | US10077942B2 (en) |
EP (1) | EP2999935B1 (en) |
JP (1) | JP6562905B2 (en) |
KR (1) | KR101790965B1 (en) |
CN (1) | CN105473971B (en) |
DE (1) | DE102013225579A1 (en) |
RU (1) | RU2633411C2 (en) |
WO (1) | WO2014187886A2 (en) |
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2013
- 2013-12-11 DE DE102013225579.9A patent/DE102013225579A1/en not_active Withdrawn
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2014
- 2014-05-22 CN CN201480039142.7A patent/CN105473971B/en active Active
- 2014-05-22 RU RU2015154717A patent/RU2633411C2/en active
- 2014-05-22 JP JP2016514406A patent/JP6562905B2/en active Active
- 2014-05-22 US US14/893,218 patent/US10077942B2/en active Active
- 2014-05-22 WO PCT/EP2014/060505 patent/WO2014187886A2/en active Application Filing
- 2014-05-22 KR KR1020157033968A patent/KR101790965B1/en active IP Right Grant
- 2014-05-22 EP EP14726339.6A patent/EP2999935B1/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2014187886A3 * |
Also Published As
Publication number | Publication date |
---|---|
CN105473971B (en) | 2018-03-09 |
US20160102916A1 (en) | 2016-04-14 |
EP2999935B1 (en) | 2019-07-10 |
KR101790965B1 (en) | 2017-10-27 |
RU2633411C2 (en) | 2017-10-12 |
US10077942B2 (en) | 2018-09-18 |
DE102013225579A1 (en) | 2014-11-27 |
WO2014187886A2 (en) | 2014-11-27 |
JP6562905B2 (en) | 2019-08-21 |
CN105473971A (en) | 2016-04-06 |
KR20160003819A (en) | 2016-01-11 |
WO2014187886A3 (en) | 2015-02-05 |
JP2016524041A (en) | 2016-08-12 |
RU2015154717A (en) | 2017-06-28 |
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