EP2171105B1 - Verfahren, vorrichtung und system zur wärmebehandlung eines laufenden metallbandes - Google Patents
Verfahren, vorrichtung und system zur wärmebehandlung eines laufenden metallbandes Download PDFInfo
- Publication number
- EP2171105B1 EP2171105B1 EP08774880A EP08774880A EP2171105B1 EP 2171105 B1 EP2171105 B1 EP 2171105B1 EP 08774880 A EP08774880 A EP 08774880A EP 08774880 A EP08774880 A EP 08774880A EP 2171105 B1 EP2171105 B1 EP 2171105B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- heat
- segment
- heated
- metal strip
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- 239000002184 metal Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 239000007787 solid Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
Definitions
- the present invention relates to a method, a device and a system for heat treatment of a moving metal strip.
- annealing One type of heat treatment process is called annealing.
- the metal is heated to temperatures of, for example, 500 ° C to 1100 ° C and then cooled to modify the crystal structure of the metal.
- a disadvantage of such a process, as well as other heat treatment processes, is its high energy consumption.
- the heating of the sheet is obtained by running it in front of radiant tubes in which flue gases from the combustion of a fuel and air circulate. In these installations, it has already been planned to recover heat from the flue gases leaving the radiant tubes to preheat the combustion air.
- the heat consumed is worth, in spite of this recovery, of the order of 1.7 times the heat found in the sheet, which corresponds to a yield of 60%.
- Such a regenerative process comprises heating the strip, cooling the heated strip, and transferring heat of at least one segment of the strip being cooled to at least one segment of the strip. the strip being heated, so as to effect at least a portion of each of said cooling and heating of the strip.
- the problem to be solved is the reduction of energy consumption in a heat treatment process of a moving metal strip.
- said heat transfer is performed from a plurality of segments of the band being heated to a plurality of segments of the band being cooled in reverse order in the tape running direction.
- said heat transfer is performed from a plurality of segments of the band being heated to a plurality of segments of the band being cooled in reverse order in the tape running direction.
- the strip is further heated by a heat source external to the strip.
- a thermal differential for driving said heat transfer is created between the band being cooled and the band being heated.
- said heat transfer is effected via at least one heat conducting solid element in contact with a segment of the strip being heated and a segment of the strip being cooled.
- said heat conduction between the segment of the strip being heated and the segment of the strip being cooled is provided by said solid element.
- said at least one heat-conducting solid element is in the form of a roll, preferably a metal one.
- a roller can ensure continuous contact, and therefore good heat conduction, with the two segments of the moving strip.
- the segment of the web being cooled is in contact with said roll at a contact angle of at least 20 °, preferably at least 30 °.
- a contact angle of at least 20 °, preferably at least 30 °.
- the segment of the web being heated is in contact with said roll at a contact angle of at least 20 °, preferably at least 30 °.
- the temperature difference between a metal strip segment being cooled and a strip segment being heated between which at least a portion of said conduction heat transfer takes place is at least 200 ° C and / or or below 500 ° C.
- Such a difference in temperature would allow a efficient heat transfer, without causing excessive heat shock in the metal strip.
- the present invention also relates to a heat transmission device for simultaneously heating a metal strip moving upstream of an additional heating zone and cooling downstream of said additional heating zone.
- the device comprises at least one solid heat conducting element intended to be in contact with said metal strip both upstream and downstream of the main heating zone, so as to transfer heat by conduction between at least one segment of the downstream metal strip and at least one segment of the upstream metal strip.
- the device comprises a series of several heat-conducting solid elements, for example five, for successively contacting said metal strip both upstream and in reverse order in the running direction of the strip, downstream of the heating zone. principal, so as to transfer heat by conduction between segments of the metal strip downstream and segments of the metal strip upstream. In this way it is possible to ensure a progressive heating of the band during heating and equally progressive cooling of the band during cooling, in order to avoid thermal shocks while ensuring a significant heat transfer.
- the device further comprises at least one baffle roll for defining a contact angle, preferably at least 20 °, between said metal strip upstream and / or downstream of the furnace and said heat-conducting solid element. in the form of a roll.
- at least one baffle roll for defining a contact angle, preferably at least 20 °, between said metal strip upstream and / or downstream of the furnace and said heat-conducting solid element. in the form of a roll.
- the present invention also relates to a heat treatment system, in particular annealing, continuously a strip scroll metal having a main heating zone and a heat transmission device according to the invention.
- FIG. 1 a conventional method of continuously annealing a moving steel strip is schematically illustrated. After cleaning 1 of the strip, it is heated from 30 ° C to 800 ° C in a heating step 2 in a radiant tube furnace. This specifies an energy input of 210 kW per tonne of steel in the form of natural gas, producing 50 kg of CO 2 and 80 mg of NO x per tonne of steel.
- FIG 2 an embodiment of the method of the present invention is shown schematically.
- the heating is divided into a preheating step 2a in which the steel strip is preheated from 30 ° C to 450 ° C, and a step heating unit 2b in a radiant tube furnace, wherein the strip is heated from 450 ° C to 800 ° C.
- the heat Q 'transferred to the strip in the preheating stage 2a comes from the cooling 3 of the same strip from 800 ° C to 450 ° C and is transmitted by conduction.
- the figure 3 represents a system 4 for continuously annealing a moving steel strip 5, according to one embodiment of the invention.
- This system 4 comprises a device 6 for conductive heat transmission for preheating 2a and cooling 3 of the strip 5, and a furnace 7 for radiant tubes 8 for the additional heating 2b of the strip 5.
- the furnace 7 with radiant tubes 8 is of the vertical type.
- the device 6 for heat transmission is illustrated in greater detail in the figure 5 .
- the strip 5 enters the device 6 through the inlet opening 9 and through said device 6 in the direction 10 to the oven 7 by preheating. After the main heater 2b, the strip 5 spring oven and through the device 6 in the opposite direction 11 to the outlet opening 12 while cooling.
- the device 6 comprises an alignment of seven heat conducting rolls 13 and two alignments of six deflector rollers 14, one on each side of the conductive roller alignment 13.
- both the conductive rollers 13 and the rollers deflectors 14 have a diameter of 800 mm.
- the conductive rollers 13 must have a diameter capable of ensuring a good contact surface with the band 5 with a comparatively reduced speed of rotation, while avoiding plastic deformation of the band 5.
- the deflector rollers 14 must also have a diameter that avoids A plastic deformation of the strip 5.
- the conductive rollers 13 and baffles 14 may therefore have diameters lying, for example, in a range between 400 and 1600 mm.
- the speed of the band 5 during cooling is normally higher than its speed during heating.
- the conductive roller 13 could have an angularly variable radius for adjusting the effective radius of the conductive roller 13 to the speed of the strip 5 on each side of the conductive roller 13.
- Another possible solution is that the conductive roller 13 is divided into radial segments, having a certain freedom of angular movement relative to each other.
- the baffle rollers 14 hold segments 5a of the strip 5 during preheating and segments 5b of the strip 5 during cooling at the same time. contact with the conductive rollers 13 at contact angles ⁇ . Different contact angles ⁇ can be envisaged by those skilled in the art depending on the circumstances. Each conductive roll 13 thus transfers heat by conduction of a segment 5b of the band 5 during cooling to a segment 5a of the band being heated. As the strip 5 passes through the device 6 in opposite directions 10,11 during preheating and during cooling, the strip 5 contacts the conductive rollers 13 in reverse order in its course during heating and during cooling.
- This heat conduction will therefore be performed between the last segment 5b of the strip 5 during cooling and the first segment 5a of the strip 5 being preheated, between the penultimate segment 5b of the strip 5 during cooling and the second segment 5a of the strip 5 during preheating, and so on.
- the temperatures of the strip 5 during cooling and during preheating follow, respectively, the curves 15 and 16 along the device 6, as illustrated in FIG. figure 6 .
- this configuration allows a gradual preheating and cooling of the strip 5.
- the bearings 17 correspond to the temperatures of the conductive rollers 13, each of them being intermediate to those of the segments 5a and 5b with which the respective driver roller 13 is in contact.
- Table 1 presents the parameters of an embodiment of the thermal treatment method of the invention in the device 6 described above with a strip 5 with a thickness of 1 mm, 1500 mm wide and a speed of 150 m / min for a production of 106 tons per hour.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Claims (14)
- Verfahren zur Wärmebehandlung eines laufenden Metallbandes (5), umfassend:- eine Erhitzung (2a, 2b) des Bandes (5),- eine Kühlung (3) des erhitzten Bandes (5), und- eine Wärmeübertragung von mindestens einem Segment (5b) des Bandes (5) während der Abkühlung zu mindestens einem Segment (5a) des Bandes (5) während der Erhitzung, um mindestens einen Teil jeweils der Kühlung und Erhitzung (3; 2a, 2b) des Bandes durchzuführen,dadurch gekennzeichnet, dass die Wärmeübertragung hauptsächlich durch Konduktion erfolgt.
- Verfahren nach dem vorhergehenden Anspruch, bei dem die Wärmeübertragung von einer Vielzahl von Segmenten (5a) des Bandes (5) während der Erhitzung zu einer Vielzahl von Segmenten (5b) des Bandes (5) während der Kühlung in umgekehrter Reihenfolge in Laufrichtung des Bandes (5) erfolgt.
- Verfahren nach Anspruch 1, bei dem beim Schritt des Erhitzens (2a, 2b) des Bandes das Band ferner durch eine zum Band externe Wärmequelle erhitzt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, bei dem die Wärmeübertragung mit Hilfe mindestens eines festen Wärme leitenden Elements erfolgt, das mit einem Segment (5a) des Bandes (5) während der Erhitzung und einem Segment (5b) des Bandes (5) während der Kühlung in Kontakt ist.
- Verfahren nach Anspruch 4, bei dem das mindestens eine feste Wärme leitende Element in Form einer vorzugsweise metallischen Walze (13) vorhanden ist.
- Verfahren nach Anspruch 5, bei dem das Segment (5b) des Bandes (5) während der Kühlung mit der Walze (13) in einem Kontaktwinkel von mindestens 20°, vorzugsweise mindestens 30° in Kontakt ist.
- Verfahren nach einem der Ansprüche 5 oder 6, bei dem das Segment (5a) des Bandes (5) während der Erhitzung mit der Walze (13) unter einem Kontaktwinkel von mindestens 20°, vorzugsweise mindestens 30° in Kontakt ist.
- Verfahren nach einem der vorhergehenden Ansprüche, bei dem der Temperaturunterschied zwischen einem Segment (5b) des Metallbandes (5) während der Kühlung und einem Segment (5a) des Bandes (5) während der Erhitzung, zwischen denen mindestens ein Teil der Wärmeübertragung durch Konduktion stattfindet, mindestens 200 °C beträgt.
- Verfahren nach einem der vorhergehenden Ansprüche, bei dem der Temperaturunterschied zwischen einem Segment (5b) des Metallbandes (5) während der Kühlung und einem Segment (5a) des Bandes (5) während der Erhitzung, zwischen denen mindestens ein Teil der Wärmeübertragung durch Konduktion stattfindet, unter 500 °C beträgt.
- Vorrichtung zur Wärmeübertragung (6), um gleichzeitig ein ablaufendes Metallband (5) stromaufwärts zu einer Haupterhitzungszone (7) zu erhitzen und es stromabwärts zu der Haupterhitzungszone (7) abzukühlen, dadurch gekennzeichnet, dass sie mindestens ein festes Wärme leitendes Element umfasst, das mit dem Metallband (5) sowohl stromaufwärts als auch stromabwärts zur Haupterhitzungszone (7) in Kontakt ist, um Wärme durch Konduktion zwischen mindestens einem Segment (5b) des Metallbandes (5) stromabwärts und mindestens einem Segment (5a) des Metallbandes (5) stromaufwärts weiterzuleiten.
- Vorrichtung (6) nach Anspruch 10, umfassend eine Reihe von mehreren festen Wärme leitenden Elementen, um nacheinander mit dem Metallband (5) sowohl stromaufwärts als auch in umgekehrter Reihenfolge in Ablaufrichtung des Bandes (5) stromabwärts zur Haupterhitzungszone (7) in Kontakt zu treten, um Wärme durch Konduktion zwischen Segmenten (5b) des Metallbandes (5) stromabwärts und Segmenten (5a) des Metallbandes (5) stromaufwärts weiterzuleiten.
- Vorrichtung (6) nach einem der Ansprüche 10 oder 11, bei der das mindestens eine feste Wärme leitende Element in Form einer vorzugsweise metallischen Walze (13) vorhanden ist.
- Vorrichtung (6) nach einem der Ansprüche 10 bis 12, ferner umfassend mindestens eine Ablenkwalze (14), um einen Kontaktwinkel zwischen dem Metallband (5) stromaufwärts und/oder stromabwärts zur Haupterhitzungszone (7) und dem festen Wärme leitenden Element in Form einer Walze (13) zu definieren.
- System zur kontinuierlichen Wärmebehandlung, insbesondere Glühen, eines ablaufenden Metallbandes (5), umfassend eine Haupterhitzungszone (7) und eine Wärmeübertragungsvorrichtung (6) nach einem der Ansprüche 10 bis 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08774880T PL2171105T3 (pl) | 2007-07-12 | 2008-07-08 | Sposób, urządzenie i system do obróbki cieplnej przesuwającej się taśmy metalowej |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2007/0348A BE1017683A3 (fr) | 2007-07-12 | 2007-07-12 | Procede, dispositif et systeme de traitement thermique d'une bande metallique en defilement. |
PCT/EP2008/058835 WO2009007362A1 (fr) | 2007-07-12 | 2008-07-08 | Procède, dispositif et systeme de traitement thermique d'une bande metallique en defilement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2171105A1 EP2171105A1 (de) | 2010-04-07 |
EP2171105B1 true EP2171105B1 (de) | 2010-11-17 |
Family
ID=39025393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08774880A Active EP2171105B1 (de) | 2007-07-12 | 2008-07-08 | Verfahren, vorrichtung und system zur wärmebehandlung eines laufenden metallbandes |
Country Status (9)
Country | Link |
---|---|
US (1) | US20100186940A1 (de) |
EP (1) | EP2171105B1 (de) |
CN (1) | CN101743331B (de) |
AT (1) | ATE488608T1 (de) |
BE (1) | BE1017683A3 (de) |
DE (1) | DE602008003585D1 (de) |
ES (1) | ES2355695T3 (de) |
PL (1) | PL2171105T3 (de) |
WO (1) | WO2009007362A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3181538A1 (de) | 2015-12-15 | 2017-06-21 | Fertinagro Nutrientes, S.L. | Düngemittelzusammensetzung mit metallionen, die zur verbesserung der löslichkeit von phosphor durch im boden befindliche mikroorganismen mit aminosäuren komplexiert sind |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011012257A1 (en) | 2009-07-27 | 2011-02-03 | Corus Technology Bv | Heat pipe assisted strip heat treatment |
DE102012020622A1 (de) * | 2012-10-19 | 2014-04-24 | Maschinenfabrik Niehoff Gmbh & Co Kg | Vorrichtung zur Wärmeübertragung bei der Herstellung von langgestrecktem Stranggut |
KR102018070B1 (ko) * | 2015-06-19 | 2019-09-04 | 야마하하쓰도키 가부시키가이샤 | 부품 실장 장치 및 부품 실장 방법 |
DE102015113407B4 (de) | 2015-08-13 | 2018-01-11 | Ebner Industrieofenbau Gmbh | Ofenvorrichtung zum Wärmebehandeln einer Metallplatine |
CN109797278A (zh) * | 2019-03-20 | 2019-05-24 | 安徽智磁新材料科技有限公司 | 超薄纳米晶带材多级热处理装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4571274A (en) * | 1982-10-28 | 1986-02-18 | Kawasaki Steel Corporation | Method for continuous annealing of a metal strip |
US4588378A (en) * | 1983-11-18 | 1986-05-13 | Chugai Ro Co., Ltd. | Continuous heat treating furnace for metallic strip |
DE3443112C1 (de) * | 1984-11-27 | 1986-08-07 | Aichelin GmbH, 7015 Korntal-Münchingen | Industrieofen zur Waermebehandlung durchlaufender Werkstuecke |
CN2224848Y (zh) * | 1995-01-27 | 1996-04-17 | 杨兴全 | 一种传导传热方式薄钢板淬火加热装置 |
DE19849757A1 (de) * | 1998-10-28 | 2000-05-04 | Vinz Peter | Kontinuierlich betriebener Rollenherdofen mit nachgeordneter zwangskonvektiver Glühgutabkühlung |
BE1015309A3 (fr) * | 2003-01-14 | 2005-01-11 | Drever Internat S A | Procede de recuit de tole metallique. |
FR2876709B1 (fr) * | 2004-10-14 | 2007-07-27 | Kappa Thermline Soc Par Action | Procede et dispositif d'amelioration qualitative et quantitative de la production dans un four vertical de traitement de bandes d'acier ou d'aluminium |
-
2007
- 2007-07-12 BE BE2007/0348A patent/BE1017683A3/fr not_active IP Right Cessation
-
2008
- 2008-07-08 CN CN2008800244691A patent/CN101743331B/zh not_active Expired - Fee Related
- 2008-07-08 AT AT08774880T patent/ATE488608T1/de active
- 2008-07-08 ES ES08774880T patent/ES2355695T3/es active Active
- 2008-07-08 EP EP08774880A patent/EP2171105B1/de active Active
- 2008-07-08 US US12/668,534 patent/US20100186940A1/en not_active Abandoned
- 2008-07-08 PL PL08774880T patent/PL2171105T3/pl unknown
- 2008-07-08 WO PCT/EP2008/058835 patent/WO2009007362A1/fr active Application Filing
- 2008-07-08 DE DE602008003585T patent/DE602008003585D1/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3181538A1 (de) | 2015-12-15 | 2017-06-21 | Fertinagro Nutrientes, S.L. | Düngemittelzusammensetzung mit metallionen, die zur verbesserung der löslichkeit von phosphor durch im boden befindliche mikroorganismen mit aminosäuren komplexiert sind |
WO2017103299A1 (es) | 2015-12-15 | 2017-06-22 | Fertinagro Nutrientes, S.L. | Composición fertilizante que incluye iones metálicos divalentes de cobre, hierro y manganeso complejados con aminoácidos para mejorar la capacidad de los microorganismos presentes en el suelo de solubilizar el fósforo |
Also Published As
Publication number | Publication date |
---|---|
PL2171105T3 (pl) | 2011-06-30 |
ES2355695T3 (es) | 2011-03-30 |
CN101743331A (zh) | 2010-06-16 |
BE1017683A3 (fr) | 2009-03-03 |
US20100186940A1 (en) | 2010-07-29 |
DE602008003585D1 (de) | 2010-12-30 |
CN101743331B (zh) | 2012-03-28 |
WO2009007362A1 (fr) | 2009-01-15 |
ATE488608T1 (de) | 2010-12-15 |
EP2171105A1 (de) | 2010-04-07 |
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