DE3738755A1 - METHOD AND SYSTEM FOR WARMING SLABS, BLOCKS, STICKS, SHEETS, STEEL TAPES AND THE LIKE HEAT MATERIAL - Google Patents
METHOD AND SYSTEM FOR WARMING SLABS, BLOCKS, STICKS, SHEETS, STEEL TAPES AND THE LIKE HEAT MATERIALInfo
- Publication number
- DE3738755A1 DE3738755A1 DE19873738755 DE3738755A DE3738755A1 DE 3738755 A1 DE3738755 A1 DE 3738755A1 DE 19873738755 DE19873738755 DE 19873738755 DE 3738755 A DE3738755 A DE 3738755A DE 3738755 A1 DE3738755 A1 DE 3738755A1
- Authority
- DE
- Germany
- Prior art keywords
- heating
- furnace
- zone
- conveyor rollers
- furnace chamber
- 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
- 239000000463 material Substances 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 54
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- 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 specially adapted for furnaces of these types
- F27B9/38—Arrangements of devices for charging
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path walking beam furnace
- F27B9/202—Conveyor mechanisms therefor
-
- 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
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/02—Skids or tracks for heavy objects
- F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
-
- 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
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
- F27B2009/026—Two or more conveyors, e.g. mounted successively
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0042—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising roller trains
- F27D2003/0044—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising roller trains at least one of them being removable
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
Die Hauptanmeldung betrifft ein Verfahren zum Wärmen von Brammen, Blöcken, Knüppeln und dergleichen Wärmgut sowie einen Wärmofen mit einem Ofenraum, der zur Ablage und zum Transport der Wärmgutstücke mit einem Rollenhubherd-System ausgerüstet ist.The main application relates to a method for heating Slabs, blocks, billets and the like heating goods as well a heating furnace with an oven space for storage and for Transport of the hot items with a roller-type hearth system is equipped.
In der Stahlindustrie ist man immer bestrebt, den Betrieb der Stranggießanlagen wirtschaftlicher zu machen und mit dem Betrieb der Walzenstraßen abzustimmen. Durch diese Maßnahme soll erreicht werden, daß das Wärmgut, also die Brammen, Blöcke und Knüppel wie aber auch Bleche und Stahlbänder, mit passender Endtemperatur möglichst warm in den der Stranggießanlage nachgeschalteten Wärmofen einläuft. Hierdurch lassen sich die Energiekosten für die walzreife Erwärmung beträchtlich reduzieren. Moderne Wärmöfen müssen deshalb auf diesen kooperativen Erwärmungs- und zeitlich abgestimmten Betriebsablauf verfahrenstechnisch und konstruktiv zugeschnitten sein. In solchen Öfen muß auch eine Erwärmung von Bandmaterial bis auf Ziehtemperatur und der Temperaturausgleich über die gesamte Länge der Wärmgutstücke bis auf Temperaturen zwischen 1000 bis 1300°C möglich sein.In the steel industry one always strives to operate of the continuous caster more economical and with the Coordinate operation of the rolling mill. By this measure the aim is to ensure that the heating material, i.e. the slabs, Blocks and billets as well as sheets and steel strips, with suitable final temperature as warm as possible in the Continuous casting machine runs downstream of the heating furnace. Hereby the energy costs for heating ready for rolling reduce considerably. Modern heating stoves therefore have to be turned on this cooperative warming and timed Operational process engineering and design be tailored. Warming must also be carried out in such ovens from strip material to drawing temperature and the Temperature compensation over the entire length of the hot items down to temperatures between 1000 and 1300 ° C.
Es ist bekannt, zum Temperaturausgleich der gegossenen Wärmgutstücke, insbesondere von durch eine Pendelschere unterteilten Stahlbändern, zwischen der Gießmaschine und der Walzstraße einen Ausgleichsofen anzuordnen, für den beispielsweise ein Zweizonen-Rollenherdofen verwendet wird. Hierbei sind in der Regel der, von der Gießmaschine aus gesehen vordere Ofenbereich als Heizzone und der nachfolgende Ofenbereich als Ausgleichszone ausgelegt. Das führt oftmals dazu, daß das Wärmgut, über die Länge gesehen, in der Heizzone ungleichmäßig erwärmt wird. Insbesondere bei Bändern wirkt sich dies sehr nachteilig aus, weil die Heizzeit zwischen Bandanfang und Bandende sehr unterschiedlich ist. Aber auch bei anderen, in Reihe durchlaufenden Wärmgutstücken treten leicht die Ungleichmäßigkeiten in der Erwärmung auf. Folglich muß die nachfolgende Ausgleichszone des Wärmofens für den Temperaturausgleich entsprechend lang ausgelegt werden.It is known to equalize the temperature of the cast Hot items, especially from a pair of shears divided steel strips, between the casting machine and the To arrange a compensating furnace for the rolling mill for example, a two-zone roller hearth furnace is used. As a rule, these are from the casting machine seen front furnace area as a heating zone and the following Furnace area designed as a compensation zone. That often leads that the material to be heated, seen over the length, in the Heating zone is heated unevenly. Especially at This affects tapes very disadvantageously because of the Heating time very different between the beginning and end of the band is. But also for others that run in a row Hot items easily encounter the irregularities in the Warming up. Consequently, the subsequent compensation zone of the heating furnace for the temperature compensation accordingly long be interpreted.
Der Erfindung liegt die Aufgabe zugrunde, unter Verwendung des mit der Hauptanmeldung vorgeschlagenen Rollenhubherd- Wärmofens ein Verfahren und eine Anlage zu dessen Durchführung zu schaffen, mit denen eine ausgeglichene Erwärmung jeglichen Wärmgutes, insbesondere auch von langem Wärmgut aus Bandmaterial, wirtschaftlich möglich ist.The invention has for its object using of the roller lifting hearth proposed with the main application Heating furnace a method and a plant for its implementation to create a balanced warming with any Heat goods, especially also from long heat goods Band material that is economically possible.
Diese Aufgabe wird verfahrensmäßig dadurch gelöst, daß das Wärmgut nach Eintritt in den Ofenraum vorerst eine schwach bzw. eine nicht beheizte Einlaufzone und erst danach die Heizzone mit Erwärmung und Ausgleich auf die Endtemperatur durchläuft.This task is solved procedurally in that the Warm material after entering the furnace room is initially a weak one or a non-heated inlet zone and only then the Heating zone with heating and compensation to the final temperature goes through.
Hierdurch wird erreicht, daß das Wärmgut nach dem Austritt aus der Gießanlage und noch vor dem Eintritt in die Heizzone des Wärmofens einem temperaturausgleichenden Warmhalteprozeß ausgesetzt wird, wobei die Ofenraumtemperatur in dieser Einlaufzone nicht über der Wärmgut-Einlauftemperatur, sondern eher darunter liegt. Das Wärmgut verbleibt in dieser Einlaufzone, bis die Heizzone vollkommen frei ist von dem vorausgegangenen Wärmgut und wird erst dann durch schnelle, satzweise Beförderung in die Heizzone transportiert. Das Wärmgut wird folglich innerhalb dieser Einlaufzone lediglich einer Warmhalte- und Ausgleichstemperatur ausgesetzt.This ensures that the heating material after the exit from the casting plant and before entering the heating zone the heating furnace a temperature-compensating holding process is exposed, the furnace chamber temperature in this Inlet zone not above the warm material inlet temperature, but rather lies below. The heating material remains in this Infeed zone until the heating zone is completely free of that previous heating material and is only then transported in batches to the heating zone. The Heat is therefore only within this inlet zone exposed to a warming and compensation temperature.
Zur Durchführung des vorstehenden Verfahrens wird als vorteilhafte Anlage ein Zweizonen-Rollenherdofen vorgeschlagen, dessen die Heizzone bildender Ofenraum zu beiden Seiten seines Rollenhubherd-Systems eine auf dessen Länge aufgeteilte Anzahl Förderrollen aufweist, die außerhalb des Ofenraumes quer zur Wärmgut-Förderrichtung hin- und herbeweglich angeordnet sind, daß ferner die Ofenraum- Seitenwände den Förderrollen angepaßte Durchbrüche aufweisen, durch die die Förderrollen mit diskontinuierlichem Bewegungsablauf bis zum Eingriff in das Rollenhubherd-System einschiebbar und wieder herausziehbar sind, wobei die Förderrollen mindestens in der eingeschobenen Endlage in der Wärmgut-Förderrichtung drehbar sind und in der herausgezogenen Endlage von außerhalb des Ofenraumes installierten Kühlluftleitungen luftgekühlt sind, wobei diesem Ofenraum ein weiterer, eine Einlaufzone bildender Ofenraum mit fest installierten Förderrollen vorgeschaltet ist und daß dieser Ofenraum keine oder eine nur schwach ausgelegte Beheizungsvorrichtung aufweist.To carry out the above procedure, as advantageous system proposed a two-zone roller hearth furnace, the furnace chamber forming the heating zone on both sides of its roller hearth system one along its length divided number of conveyor rollers outside of Oven chamber back and forth across the direction of heat transfer are arranged so that the furnace space Side walls have openings adapted to the conveyor rollers, through which the conveyor rollers with discontinuous Sequence of movements up to the intervention in the roller hearth system can be inserted and pulled out again, the Conveyor rollers at least in the inserted end position in the Heat material conveying direction are rotatable and pulled out End position installed from outside the furnace Cooling air lines are air-cooled, this furnace space another furnace space forming an inlet zone with fixed installed conveyor rollers is upstream and that this Furnace chamber none or only a weak one Has heating device.
Eine solche Anlage ist in der Herstellung und in der Unterhaltung wirtschaftlich, denn der Förderrollengang in der Einlaufzone erfordert keinen besonderen Aufwand und auch die eventuellen Beheizungskosten für den Warmhalte- und Temperaturausgleichsprozeß innerhalb dieser Einlaufzone können vernachlässigt werden, da der Ofenraum vorwiegend von dem einlaufenden heißen Warmgut beheizt wird. In der Regel reicht eine gute Faserisolierung des Ofengehäuses in der Einlaufzone aus, wofür zweckmäßig deren Ofenraum als ein allseitig gut isolierbarer Rollenherd-Vorofen ausgebildet ist. Such a system is in the manufacture and in the Entertainment economical, because the conveyor roller conveyor in the entry zone does not require any special effort and also the possible heating costs for keeping warm and Temperature compensation process within this inlet zone can be neglected because the furnace space is predominantly from the incoming hot material is heated. Usually good fiber insulation of the furnace housing in the Inlet zone out, for which purpose the furnace space as a roller hearth furnace is well insulated on all sides.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels beschrieben und dargestellt.The invention is described below using an exemplary embodiment described and illustrated.
Die Zeichnung zeigt einen vertikalen Längsschnitt durch eine Wärmofen-Anlage mit einem Rollenhubherdofen A in der Ausführung nach der Hauptanmeldung und einem Rollenherd-Vorofen B.The drawing shows a vertical longitudinal section through a heating furnace system with a roller hearth furnace A in the version after the main application and a roller hearth pre-furnace B.
Der Rollenhubherdofen A hat einen die Heizzone bildenden Ofenraum 10 mit üblicher Brennerbeheizung, die für eine Aufheizung bis zu einer Temperatur von mindestens 1300°C geeignet ist. Der Ofenraum 10 erstreckt sich längs zwischen zwei Seitenwänden und sich gegenüberliegenden Stirnwänden mit lediglich nach außen verschließbaren Öffnungen 12. Die Wärmgutstücke 13 werden durch hier im einzelnen nicht beschriebene Vorrichtungen über ein Rollenhubherd-System 14, 15 transportiert und durch die ausgangsseitige Öffnung 12 entnommen.The roller-type hearth furnace A has a furnace zone 10 which forms the heating zone and which has conventional burner heating and is suitable for heating up to a temperature of at least 1300.degree. The furnace chamber 10 extends longitudinally between two side walls and opposite end walls with openings 12 that can only be closed to the outside. The hot material pieces 13 are transported by devices not described in detail here via a roller-type hearth system 14 , 15 and removed through the opening 12 on the outlet side.
Für die Auflage und den Transport der Wärmgutstücke 13 weist das Rollenhubherd-System senkrecht bewegliche keramische Ablageböcke 14 des Hubherdes und als dessen feststehende Ablageelemente Förderrollen 15 auf, die waagerecht bewegbar sind. Diese Förderrollen 15 sind mit ihren hier nicht dargestellten Lager- und Getriebekästen sowie in ihren Antriebsvorrichtungen in zwei Reihen beiderseits des Ofenraums 10 auf der Außenseite der Wärmeofen-Seitenwände angeordnet. For the support and the transport of the hot items 13 , the roller-type hearth system has vertically movable ceramic trestles 14 of the hearth and, as its stationary depositing elements, conveyor rollers 15 , which can be moved horizontally. These conveyor rollers 15 are arranged with their storage and gear boxes, not shown here, and in their drive devices in two rows on both sides of the furnace chamber 10 on the outside of the furnace side walls.
Die Förderrollen 15 sind jeweils quer zur Wärmgut- Förderrichtung hin und her verfahrbar gelagert. Die beiden Seitenwände des Wärmofens haben auf Höhe der Förderrollen 15 im Durchmesser angepaßte Durchbrüche, durch die die Förderrollen 15 durch eine aus dem Getriebekasten heraustretende Schubvorrichtung kurzzeitig zum Eingriff in das Hubherdsystem in den Ofenraum 10 hinein und nach dem Weiterbefördern der Wärmgutstücke 13 wieder aus dem Ofenraum 10 herausbewegt werden. Ein von dieser Förderrollen- Schubvorrichtung gesteuerter, nicht dargestellter Drehantrieb für die Förderrollen 15 bewirkt, daß diese nur in den Endlagen betätigt werden, mithin also auch in der, in den Ofenraum 10 eingeschobenen Endlage, in der die Förderrollen 15 nur kurzzeitig betätigt werden, sobald sie unter die Wärmgutstücke 13 geschoben sind und diese nach dem Absinken der Anlageböcke 14 des Hubherdes das Wärmgut 13 tragen. In der wieder aus dem Ofenraum 10 herausgefahrenen Endlage kann die Drehbewegung der Förderrollen 15 oder ein separates Gebläse für eine Luftkühlung der Förderrollen 15 sorgen.The conveyor rollers 15 are each movable back and forth transversely to the heating material conveying direction. The two side walls of the heating furnace have openings in the diameter at the level of the conveyor rollers 15 , through which the conveyor rollers 15 briefly engage the furnace system 10 into the furnace chamber 10 by a pushing device emerging from the gearbox and after the conveying of the heating material pieces 13 back out of the furnace chamber 10 can be moved out. A controlled by this conveyor roller pushing device, not shown, rotary drive for the conveyor rollers 15 causes them to be operated only in the end positions, thus also in the end position inserted into the furnace chamber 10 , in which the conveyor rollers 15 are actuated only briefly as soon as they are pushed under the hot material pieces 13 and these carry the hot material 13 after the lowering of the jacks 14 of the lifting hearth. In the end position moved back out of the furnace chamber 10 , the rotary movement of the conveyor rollers 15 or a separate fan can provide air cooling for the conveyor rollers 15 .
Die Wärmgut-Ablageböcke 14 des Hubherdes sind auf die Länge des Herdsystems in Sektionen mit Zwischenräumen 21 aufgeteilt, in die die Förderrollen 15 für die Aufnahme und den Transport der Wärmgutstücke 13 eingreifen. Die Hubbewegung kann von den Ablageböcken 14 oder den Förderrollen 15 in der eingeschobenen Endlage durchgeführt werden. The heating material storage trestles 14 of the lifting hearth are divided over the length of the cooking system into sections with spaces 21 , in which the conveyor rollers 15 engage for receiving and transporting the heating material pieces 13 . The lifting movement can be carried out by the trestles 14 or the conveyor rollers 15 in the inserted end position.
Das Wärmgut 13, hierin als Stahlbänder dargestellt, laufen in Pfeilrichtung längs durch die Heizzone des Ofenraums 10. In der Durchlaufrichtung ist dem vorbeschriebenen Rollenhubherdofen A ein Rollenherd-Vorofen B mit einem Ofenraum 30 vorgeschaltet, der die Einlaufzone bildet. Dieser Ofenraum 30 enthält einen stationär angeordneten Förderrollengang 31, auf dem das durch die stirnseitige Eintrittsöffnung 32 einlaufende Wärmgut 13 längs durch die Einlaufzone der Ofenkammer 30 bis in die Heizzone der Ofenkammer 10 geführt wird.The heat material 13 , shown here as steel strips, runs longitudinally through the heating zone of the furnace space 10 in the direction of the arrow. In the direction of passage, the roller-hearth furnace A described above is preceded by a roller-hearth pre-oven B with an oven space 30 , which forms the entry zone. This furnace chamber 30 contains a stationary conveyor roller conveyor 31 , on which the heat material 13 entering through the front entry opening 32 is guided lengthwise through the inlet zone of the furnace chamber 30 into the heating zone of the furnace chamber 10 .
Diese Einlaufzone wird relativ kühl gehalten. Deren Ofenkammer 30 weist nur einen Heizbrenner 33 auf für die Aufrechterhaltung einer gleichmäßigen Temperatur, die etwa der Einlauftemperatur des Wärmguts 13 entspricht bzw. etwas darunterliegt. Damit wird schon vorweg ein guter Temperaturausgleich erreicht, noch bevor das Wärmgut 13 nach dem Entleeren der Ofenkammer 10 mit schneller Förderbewegung in deren Heizzone transportiert wird, wo es dann bis auf Endtemperatur für die Weiterverarbeitung erhitzt wird.This inlet zone is kept relatively cool. The furnace chamber 30 has only one heating burner 33 for maintaining a uniform temperature, which corresponds approximately to the inlet temperature of the heat material 13 or is slightly below. A good temperature compensation is thus achieved in advance, even before the heating material 13 is transported to the heating zone with a rapid conveying movement after the furnace chamber 10 has been emptied, where it is then heated to the final temperature for further processing.
Dem Rollenherd-Vorofen B (Einlaufzone) ist eine Schere 34 vorgeschaltet, die das von einer nicht dargestellten Gießanlage einlaufende Stahlband auf passende Länge schneidet und die Wärmgutstücke 13 abtrennt. The roller hearth pre-oven B (inlet zone) is preceded by a pair of scissors 34 which cuts the steel strip arriving from a casting installation (not shown) to a suitable length and separates the hot items 13 .
Zwischen den Ofenräumen 10 und 30 von Rollenhubherdofen A und Rollenherd-Vorofen B befinden sich Trennwände 35 mit den korrespondierenden stirnseitigen Öffnungen 12 für den Durchtritt der Wärmgutstücke 13. Die Trennwände 35 sind durch eine Isolierfaser-Zwischenschicht 36 gegenseitig wärmeisoliert, die gleichzeitig die beide Zonen miteinander verbindenden Durchtrittslöcher 12 für die Wärmgutstücke 13 rundherum dicht umschließt. Between the furnace rooms 10 and 30 of the roller hearth furnace A and the roller hearth pre-furnace B there are partition walls 35 with the corresponding end openings 12 for the passage of the hot items 13 . The partition walls 35 are mutually thermally insulated by an insulating fiber intermediate layer 36 , which at the same time tightly surrounds the through holes 12 connecting the two zones for the hot items 13 all around.
BezugszeichenlisteReference symbol list
10 Ofenraum (Heizzone)
12 stirnseitige Öffnungen
13 Wärmgut
14 Ablageblöcke
15 Förderrollen
21 Zwischenräume zwischen Ablageböcken
30 Ofenraum (Einlaufzone)
31 Förderrollengang
32 Eintrittsöffnung
33 Heizbrenner
34 Schere
35 Trennwände
36 Isolierfaser-Zwischenschicht 10 furnace chamber (heating zone)
12 front openings
13 hot material
14 storage blocks
15 conveyor rollers
21 spaces between the trestles
30 furnace chamber (inlet zone)
31 conveyor roller conveyor
32 inlet opening
33 heating burners
34 scissors
35 partitions
36 insulating fiber intermediate layer
Claims (4)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873738755 DE3738755A1 (en) | 1987-10-29 | 1987-11-14 | METHOD AND SYSTEM FOR WARMING SLABS, BLOCKS, STICKS, SHEETS, STEEL TAPES AND THE LIKE HEAT MATERIAL |
| DE88108487T DE3883912D1 (en) | 1987-10-29 | 1988-05-27 | Method and furnace for heating slabs, blocks, billets, sheets, steel strips and the like heating material. |
| EP88108487A EP0313726B1 (en) | 1987-10-29 | 1988-05-27 | Process and furnace to heat slabs, billets, ingots, sheets, steel bands and similar charges |
| ES88108487T ES2045011T3 (en) | 1987-10-29 | 1988-05-27 | PROCEDURE AND OVEN TO HEAT RUBBINGS, LIONGOTES, STICKS, SHEETS, STEEL STRIPS AND MATERIAL TO BE HEATED SIMILAR. |
| AT88108487T ATE94274T1 (en) | 1987-10-29 | 1988-05-27 | PROCESS AND FURNACE FOR HEATING SLABS, BLOCKS, BILLETS, SHEET, STEEL STRIPS AND SIMILAR HEATING GOODS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873736674 DE3736674C1 (en) | 1987-10-29 | 1987-10-29 | Method and furnace for heating slabs, ingots, billets, sheets and similar products |
| DE19873738755 DE3738755A1 (en) | 1987-10-29 | 1987-11-14 | METHOD AND SYSTEM FOR WARMING SLABS, BLOCKS, STICKS, SHEETS, STEEL TAPES AND THE LIKE HEAT MATERIAL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3738755A1 true DE3738755A1 (en) | 1989-06-01 |
Family
ID=25861258
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19873738755 Granted DE3738755A1 (en) | 1987-10-29 | 1987-11-14 | METHOD AND SYSTEM FOR WARMING SLABS, BLOCKS, STICKS, SHEETS, STEEL TAPES AND THE LIKE HEAT MATERIAL |
| DE88108487T Expired - Fee Related DE3883912D1 (en) | 1987-10-29 | 1988-05-27 | Method and furnace for heating slabs, blocks, billets, sheets, steel strips and the like heating material. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE88108487T Expired - Fee Related DE3883912D1 (en) | 1987-10-29 | 1988-05-27 | Method and furnace for heating slabs, blocks, billets, sheets, steel strips and the like heating material. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0313726B1 (en) |
| DE (2) | DE3738755A1 (en) |
| ES (1) | ES2045011T3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2655894B1 (en) * | 1989-12-19 | 1994-05-27 | Stein Heurtey | DEVICE FOR STORING METALLURGICAL PRODUCTS, SUCH AS THIN SLABS. |
| DE4203395C2 (en) * | 1992-02-06 | 1993-11-25 | Didier Ofu Eng | Method for guiding thin slabs, sheets and steel strips to be heated in high-temperature roller hearth furnaces and high-temperature roller hearth furnace for carrying out the method |
| DE9304122U1 (en) * | 1993-03-19 | 1994-07-28 | Claudius Peters Ag, 21614 Buxtehude | Arrangement for breaking and cooling the material emerging from a kiln |
| DE19723692C2 (en) * | 1996-06-05 | 2000-11-23 | Eisenmann Kg Maschbau | Process for firing bricks in a roller kiln and kiln for carrying out the process |
| DE19639531C1 (en) * | 1996-09-26 | 1998-02-05 | Riedhammer Gmbh Co Kg | Loading and unloading device for a firing rack |
| DE19928457C1 (en) * | 1999-06-24 | 2001-01-04 | Riedhammer Gmbh Co Kg | Tunnel oven for sintering and burning rotationally symmetrical objects has transport unit with disc wheels aligned spaced from each other across longitudinal direction for holding and turning articles |
| DE102006020781B3 (en) | 2006-05-03 | 2007-11-22 | Benteler Automobiltechnik Gmbh | oven |
| WO2010095032A1 (en) * | 2009-02-23 | 2010-08-26 | Extrutec Gmbh | Pre-heating device for objects, in particular aluminum extrusions, rods or bolts and a system having said pre-heating device |
| CN105115307B (en) * | 2015-09-16 | 2017-07-11 | 中冶南方工程技术有限公司 | Quickly cooling mechanism and its control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE661139C (en) * | 1936-02-15 | 1938-06-11 | Hoesch Akt Ges | Roller conveyor for the conveyance of sheets and strips through heat ovens |
| DE1201859B (en) * | 1961-06-20 | 1965-09-30 | Universale Ind Ofenbau Gmbh | Roller hearth annealing furnace, especially for sheet metal, with a lifting grate that can be raised and lowered above and below the hearth roller level |
| DE2151637C3 (en) * | 1971-10-16 | 1974-06-06 | Thermo-Engineering Gmbh, 4300 Essen | Vertically movable feed and discharge conveyor for a walking beam furnace |
-
1987
- 1987-11-14 DE DE19873738755 patent/DE3738755A1/en active Granted
-
1988
- 1988-05-27 EP EP88108487A patent/EP0313726B1/en not_active Expired - Lifetime
- 1988-05-27 ES ES88108487T patent/ES2045011T3/en not_active Expired - Lifetime
- 1988-05-27 DE DE88108487T patent/DE3883912D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| WUSATOWSKI, Z.: Wärmöfen für Walzwerke und Schmieden, 1959, S. 172-177 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0313726B1 (en) | 1993-09-08 |
| EP0313726A3 (en) | 1990-04-25 |
| DE3883912D1 (en) | 1993-10-14 |
| ES2045011T3 (en) | 1994-01-16 |
| EP0313726A2 (en) | 1989-05-03 |
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