EP2085728A1 - Rotating oven - Google Patents
Rotating oven Download PDFInfo
- Publication number
- EP2085728A1 EP2085728A1 EP09000693A EP09000693A EP2085728A1 EP 2085728 A1 EP2085728 A1 EP 2085728A1 EP 09000693 A EP09000693 A EP 09000693A EP 09000693 A EP09000693 A EP 09000693A EP 2085728 A1 EP2085728 A1 EP 2085728A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating chamber
- objects
- rotary kiln
- cover
- rotationally driven
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 81
- 239000007789 gas Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- 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
- F27B9/16—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 circular or arcuate path
-
- 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
- C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/39—Arrangements of devices for discharging
Definitions
- the invention relates to a rotary kiln with a heating chamber, in which a feed opening is formed, can be introduced by the objects to be heated in the heating chamber, and with a rotationally driven, circulating transport device, by means of which the objects are transported through the heating chamber to a removal opening to the objects are removable from the heating chamber, wherein the heating chamber has one or more side walls, a floor and a ceiling.
- Such a rotary kiln which is also referred to as rotary hearth furnace, serves to heat various objects, such as metal circuit boards, in a continuous process to a predetermined temperature of, for example, about 900 ° C to 1100 ° C.
- the rotary kiln has a heating chamber, which is heated in the usual way by direct or indirect heating to a predetermined temperature and kept at the temperature by means of a conventional control.
- a circulating transport device is arranged, for example in the form of an endless conveyor, on which the objects can be placed.
- a lateral feed opening is provided, through which the objects are introduced into the interior of the heating chamber and deposited on the transport device.
- the transport device guides the objects through the heating chamber, wherein after removal of approximately 310 ° to 340 ° of the circumference of the heating chamber or the transport path of the transport device in the side wall, a removal opening is formed through which the objects are removed from the transport device and out of the Heating chamber can be removed. Subsequently, the objects are sent for further processing in other stations or machines.
- a particular disadvantage of this known rotary kiln on the one hand that through the side feed opening and the side removal opening, a relatively large heat loss occurs, whereby the energy consumption is very high, to keep the interior of the heating chamber at the predetermined, relatively high temperature.
- the invention has for its object to provide a rotary kiln of the type mentioned, which has a compact structure and are avoided in the excessive heat loss and, where appropriate, protective gas losses.
- the objects are preferably introduced by means of a first Gelenkarmroboters from below through the feed opening in the heating chamber and placed on the lid formed on the holder. In their seated on the holders Position pass through the objects as a result of the rotation of the lid, the heating chamber over a circumferential range of about 310 ° to 340 ° until they reach the removal opening.
- the aforementioned articulated-arm robot or another second articulated-arm robot engages the discharge opening from below through the bottom of the heating chamber and takes the objects from the holders and out of the heating chamber through the removal opening.
- the heat loss and optionally also the protective gas loss is relatively low, so that the operating costs of the rotary kiln are substantially reduced.
- the charging opening and / or the removal opening are formed in the bottom of the heating chamber as slots, wherein the slots preferably extend substantially perpendicular to the direction of movement of the objects in the heating chamber. Due to this relatively small size of the feed opening and the removal opening, the heat loss and possibly also the protective gas loss can continue to be kept low.
- the rotary kiln according to the invention has a supporting central support, which is surrounded by the annular heating chamber. After the objects are introduced into the heating chamber through the feed opening, they pass through the annular heating chamber about the center support through a circumferential angle from 310 ° to 340 °, until they reach the discharge opening.
- the charging opening and the removal opening are thus arranged offset in the circumferential direction of the heating chamber by an angle in the range of 20 ° to 50 °.
- FIG. 1 shows a rotary kiln 10, which has a central support 11, which carries at its upper end a transversely to the longitudinal extent of the central support 11 cantilevered ceiling plate 12.
- the heating chamber 19 is supported on its underside via supports 24 on the ground, so that below the heating chamber 19, a free space 25 is formed.
- This space 25 is used in the rotary kiln 10 according to the invention for introducing the objects P into the heating chamber 19 and to be taken from this.
- two slots 20 and 21 each extending radially to the central support 11 are provided which are offset by an angle of approximately 30 ° to 40 ° in the circumferential direction and thus offset in the transport direction of the heating chamber 19 it out Fig. 2 is apparent.
- the interior of the heating chamber 19 is heated in a conventional manner and maintained at a desired, predetermined temperature, which is not shown in detail in the figures.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
Die Erfindung betrifft einen Drehofen mit einer Heizkammer, in der eine Beschickungsöffnung ausgebildet ist, durch die zu erwärmende Objekte in die Heizkammer einbringbar sind, und mit einer drehangetriebenen, umlaufenden Transportvorrichtung, mittels der die Objekte durch die Heizkammer bis zu einer Entnahmeöffnung transportierbar sind, an der die Objekte aus der Heizkammer entnehmbar sind, wobei die Heizkammer eine oder mehrere Seitenwände, einen Boden und eine Decke aufweist.The invention relates to a rotary kiln with a heating chamber, in which a feed opening is formed, can be introduced by the objects to be heated in the heating chamber, and with a rotationally driven, circulating transport device, by means of which the objects are transported through the heating chamber to a removal opening to the objects are removable from the heating chamber, wherein the heating chamber has one or more side walls, a floor and a ceiling.
Ein derartiger Drehofen, der auch als Drehherdofen bezeichnet wird, dient dazu, verschiedene Objekte, beispielsweise Platinen aus Metall, in einem kontinuierlichen Prozess auf eine vorbestimmte Temperatur von beispielsweise ca. 900°C bis 1100°C aufzuheizen. Der Drehofen weist eine Heizkammer auf, die in üblicher Weise durch direkte oder indirekte Erwärmung auf eine vorbestimmte Temperatur aufgeheizt und mittels einer üblichen Steuerung auf der Temperatur gehalten wird. In der Heizkammer ist eine umlaufende Transportvorrichtung beispielsweise in Form eines Endlosförderers angeordnet, auf die die Objekte aufgesetzt werden können.Such a rotary kiln, which is also referred to as rotary hearth furnace, serves to heat various objects, such as metal circuit boards, in a continuous process to a predetermined temperature of, for example, about 900 ° C to 1100 ° C. The rotary kiln has a heating chamber, which is heated in the usual way by direct or indirect heating to a predetermined temperature and kept at the temperature by means of a conventional control. In the heating chamber, a circulating transport device is arranged, for example in the form of an endless conveyor, on which the objects can be placed.
In der Seitenwand ist eine seitliche Beschickungsöffnung vorgesehen, durch die die Objekte in den Innenraum der Heizkammer eingebracht und auf der Transportvorrichtung abgesetzt werden. Die Transportvorrichtung führt die Objekte durch die Heizkammer, wobei nach Durchlaufen von ca. 310° bis 340° des Umfangs der Heizkammer bzw. des Transportweges der Transportvorrichtung in der Seitenwand eine Entnahmeöffnung ausgebildet ist, durch die hindurch die Objekte von der Transportvorrichtung abgenommen und aus der Heizkammer entnommen werden können. Anschließend werden die Objekte einer weiteren Bearbeitung in anderen Stationen oder Maschinen zugeführt. Besonders nachteilig bei diesem vorbekannten Drehofen ist einerseits, dass durch die seitliche Beschickungsöffnung und die seitliche Entnahmeöffnung ein relativ großer Wärmeverlust auftritt, wodurch der Energiebedarf sehr hoch ist, um den Innenraum der Heizkammer auf der vorbestimmten, relativ hohen Temperatur zu halten.In the side wall, a lateral feed opening is provided, through which the objects are introduced into the interior of the heating chamber and deposited on the transport device. The transport device guides the objects through the heating chamber, wherein after removal of approximately 310 ° to 340 ° of the circumference of the heating chamber or the transport path of the transport device in the side wall, a removal opening is formed through which the objects are removed from the transport device and out of the Heating chamber can be removed. Subsequently, the objects are sent for further processing in other stations or machines. A particular disadvantage of this known rotary kiln on the one hand, that through the side feed opening and the side removal opening, a relatively large heat loss occurs, whereby the energy consumption is very high, to keep the interior of the heating chamber at the predetermined, relatively high temperature.
Bei bestimmten Anwendungen ist es notwendig, dass innerhalb der Heizkammer eine Schutzgasatmosphäre herrscht. In diesem Fall ist das weitere Problem gegeben, dass das Schutzgas durch die seitliche Beschickungsöffnung und die seitliche Entnahmeöffnung in großer Menge ausströmt, so dass einerseits ein sehr hoher Schutzgasverbrauch und andererseits zusätzliche konstruktive Rückhaltevorrichtungen notwendig sind, um sicherzustellen, dass innerhalb der Heizkammer eine ausreichende Schutzgasatmosphäre herrscht.In certain applications, it is necessary that a protective gas atmosphere prevails within the heating chamber. In this case, there is the further problem that the protective gas flows through the lateral feed opening and the lateral removal opening in large quantities, so that on the one hand a very high shielding gas consumption and on the other hand additional constructive restraints are necessary to ensure that within the heating chamber a sufficient inert gas atmosphere prevails.
Darüber hinaus benötigt der vorbekannte Drehofen einen relativ großen Bauraum und insbesondere neben dem Drehrohrofen im Bereich der Beschickungsöffnung und der Entnahmeöffnung muss ein großer Raum freigehalten werden, um eine ordnungsgemäße Beschickung und Entnahme der Objekte gewährleisten zu können.In addition, the previously known rotary kiln requires a relatively large space and in particular next to the rotary kiln in the region of the feed opening and the discharge opening a large space must be kept free to a ensure proper loading and unloading of the objects.
Der Erfindung liegt die Aufgabe zugrunde, einen Drehofen der genannten Art zu schaffen, der einen kompakten Aufbau aufweist und bei dem übermäßige Wärmeverluste und gegebenenfalls Schutzgasverluste vermieden sind.The invention has for its object to provide a rotary kiln of the type mentioned, which has a compact structure and are avoided in the excessive heat loss and, where appropriate, protective gas losses.
Diese Aufgabe wird erfindungsgemäß durch einen Drehofen mit den Merkmalen des Anspruchs 1 gelöst. Dabei ist vorgesehen, dass zumindest ein Abschnitt der Decke als drehangetriebener Deckel ausgebildet ist, der auf seiner der Heizkammer zugewandten Unterseite mehrere Halter zur Aufnahme der Objekte trägt, und dass die Beschickungsöffnung und/oder die Entnahmeöffnung in dem Boden der Heizkammer ausgebildet sind. Vorzugsweise sind sowohl die Beschickungsöffnung als auch die Entnahmeöffnung in dem Boden der Heizkammer vorgesehen.This object is achieved by a rotary kiln with the features of claim 1. It is provided that at least a portion of the ceiling is designed as a rotary-driven lid, which carries on its underside facing the heating chamber a plurality of holders for receiving the objects, and that the feed opening and / or the removal opening are formed in the bottom of the heating chamber. Preferably, both the charging opening and the removal opening are provided in the bottom of the heating chamber.
Die Erfindung geht von dem Grundgedanken aus, die Heizkammer von ihrer Unterseite zu beschicken und zu entleeren, wodurch ein übermäßiger Wärmeverlust bereits aufgrund der geometrischen Anordnung der Beschickungsöffnung und der Entnahmeöffnung gering gehalten werden kann. Darüber hinaus ist die Transportvorrichtung in die Decke der Heizkammer integriert, indem zumindest ein Abschnitt der Decke als sich drehender Deckel ausgebildet ist, an dem die Halter für die Objekte angebracht sind.The invention is based on the basic idea of loading and emptying the heating chamber from its underside, as a result of which excessive heat loss can already be minimized due to the geometrical arrangement of the charging opening and the removal opening. In addition, the transport device is integrated into the ceiling of the heating chamber by at least a portion of the ceiling is formed as a rotating lid on which the holders are attached to the objects.
Die Objekte werden vorzugsweise mittels eines ersten Gelenkarmroboters von unten durch die Beschickungsöffnung in die Heizkammer eingebracht und auf die am Deckel ausgebildeten Halter aufgesetzt. In ihrer auf den Haltern aufsitzenden Position durchlaufen die Objekte infolge der Drehung des Deckels die Heizkammer über einen Umfangsbereich von ca. 310° bis 340°, bis sie zur Entnahmeöffnung gelangen. Der vorgenannte Gelenkarmroboter oder ein weiterer, zweiter Gelenkarmroboter greift an der Entnahmeöffnung von unten durch den Boden der Heizkammer in diese hinein und nimmt die Objekte von den Haltern ab und durch die Entnahmeöffnung aus der Heizkammer heraus. Der Wärmeverlust und gegebenenfalls auch der Schutzgasverlust ist relativ gering, so dass die Betriebskosten des Drehofens wesentlich verringert sind.The objects are preferably introduced by means of a first Gelenkarmroboters from below through the feed opening in the heating chamber and placed on the lid formed on the holder. In their seated on the holders Position pass through the objects as a result of the rotation of the lid, the heating chamber over a circumferential range of about 310 ° to 340 ° until they reach the removal opening. The aforementioned articulated-arm robot or another second articulated-arm robot engages the discharge opening from below through the bottom of the heating chamber and takes the objects from the holders and out of the heating chamber through the removal opening. The heat loss and optionally also the protective gas loss is relatively low, so that the operating costs of the rotary kiln are substantially reduced.
Aufgrund der Beschickung der Objekte und der Entnahme der Objekte auf der Unterseite der Heizkammer durch deren Boden hindurch ist ein sehr kompakter Aufbau des Drehofens erreicht.Due to the loading of the objects and the removal of the objects on the underside of the heating chamber through the bottom of a very compact construction of the rotary kiln is achieved.
In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, dass die Beschickungsöffnung und/oder die Entnahmeöffnung im Boden der Heizkammer als Schlitze ausgebildet sind, wobei die Schlitze vorzugsweise im Wesentlichen senkrecht zur Bewegungsrichtung der Objekte in der Heizkammer verlaufen. Aufgrund dieser relativ kleinen Größe der Beschickungsöffnung und der Entnahmeöffnung kann der Wärmeverlust und gegebenenfalls auch der Schutzgasverlust weiterhin gering gehalten werden.In a preferred embodiment of the invention it is provided that the charging opening and / or the removal opening are formed in the bottom of the heating chamber as slots, wherein the slots preferably extend substantially perpendicular to the direction of movement of the objects in the heating chamber. Due to this relatively small size of the feed opening and the removal opening, the heat loss and possibly also the protective gas loss can continue to be kept low.
In einer möglichen konstruktiven Ausgestaltung weist der erfindungsgemäße Drehofen eine tragende Mittelstütze auf, die von der ringförmig ausgebildeten Heizkammer umgeben ist. Nachdem die Objekte durch die Beschickungsöffnung in die Heizkammer eingebracht sind, durchlaufen sie die ringförmige Heizkammer um die Mittelstütze herum über einen Umfangswinkel von 310° bis 340°, bis sie zur Entnahmeöffnung gelangen. Bei dieser Ausgestaltung sind die Beschickungsöffnung und die Entnahmeöffnung in Umfangsrichtung der Heizkammer somit um einen Winkel im Bereich von 20° bis 50° versetzt angeordnet.In a possible constructive embodiment, the rotary kiln according to the invention has a supporting central support, which is surrounded by the annular heating chamber. After the objects are introduced into the heating chamber through the feed opening, they pass through the annular heating chamber about the center support through a circumferential angle from 310 ° to 340 °, until they reach the discharge opening. In this embodiment, the charging opening and the removal opening are thus arranged offset in the circumferential direction of the heating chamber by an angle in the range of 20 ° to 50 °.
In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, dass in der Decke der Heizkammer eine ringförmige Ausnehmung ausgebildet ist, in die der Deckel, der ebenfalls ringförmig und insbesondere als Ringscheibe ausgebildet ist, drehbar eingesetzt ist. Um den Aufbau des Drehofens äußerst kompakt zu halten, kann vorgesehen sein, den Drehantrieb für den Deckel in die Mittelstütze zu integrieren und die Antriebsbewegung in üblicher Weise von dem Drehantrieb auf den ringförmigen Deckel zu übertragen.In a preferred embodiment of the invention it is provided that in the ceiling of the heating chamber, an annular recess is formed, in which the lid, which is also annular and in particular designed as an annular disc, is rotatably inserted. In order to keep the construction of the rotary kiln extremely compact, it can be provided to integrate the rotary drive for the cover in the central support and to transmit the drive movement in the usual way from the rotary drive to the annular cover.
Die Beschickung der Heizkammer und deren Entleerung von der Unterseite durch entsprechende Öffnungen in dem Boden der Heizkammer hindurch bedingt, dass unterhalb des Bodens der Heizkammer ein Freiraum gebildet ist, der die genannten Tätigkeiten ermöglicht. Dies lässt sich in konstruktiv einfacher Weise erreichen, indem entweder die Heizkammer mit Abstand zu dem darunter liegenden Erdboden abgehängt oder vorzugsweise auf Stützen aufgestellt wird.The loading of the heating chamber and its emptying from the bottom through corresponding openings in the bottom of the heating chamber through the fact that below the bottom of the heating chamber, a free space is formed, which allows the above activities. This can be achieved in a structurally simple manner by either the heating chamber is suspended at a distance from the underlying soil or preferably placed on supports.
Weitere Einzelheiten und Merkmale der Erfindung sind aus der folgenden Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung ersichtlich. Es zeigen:
- Fig. 1
- einen schematischen Querschnitt durch einen erfindungsgemäßen Drehofen und
- Fig. 2
- den Schnitt II-II in
Fig. 1 .
- Fig. 1
- a schematic cross section through a rotary kiln according to the invention and
- Fig. 2
- the section II-II in
Fig. 1 ,
Die Mittelstütze 11 ist von einer ringförmigen Heizkammer 19 konzentrisch umgeben, die im darstellten Ausführungsbeispiel einen rechteckigen Querschnitt besitzt und eine radial äußere Außenwand 16 sowie eine radial innere Innenwand 17 umfasst und auf ihrer Unterseite durch einen Boden 18 verschlossen ist. Die Deckenplatte 12 bildet eine Decke 23 der Heizkammer 19.The central support 11 is concentrically surrounded by an
In der Decke 23 der Heizkammer 19 und somit in der Deckenplatte 12 ist eine konzentrisch zur Mittelstütze 11 ausgebildete, ringförmige Ausnehmung 13 vorgesehen, in die ein ringförmiger Deckel 14 unter enger Passung drehbar eingesetzt ist. Der ringförmige Deckel 14 ist in nicht dargestellter Weise drehangetrieben und weist auf seiner Unterseite 14a, die in den Innenraum der Heizkammer 19 hineinragt, nur schematisch dargestellte Halter 15 auf, an denen jeweils zumindest ein Objekt P angehängt werden kann. Der drehangetriebene Deckel 14 bildet zusammen mit den Haltern 15 eine Transportvorrichtung 22, mit der die Objekte P durch die Heizkammer 19 und somit durch den Drehofen transportiert werden können.In the
Wie
Der Innenraum der Heizkammer 19 wird in an sich bekannter Weise erwärmt und auf einer gewünschten, vorbestimmten Temperatur gehalten, was in den Figuren nicht näher dargestellt ist.The interior of the
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008006682A DE102008006682A1 (en) | 2008-01-30 | 2008-01-30 | rotary kiln |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2085728A1 true EP2085728A1 (en) | 2009-08-05 |
EP2085728B1 EP2085728B1 (en) | 2011-12-07 |
Family
ID=40550224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09000693A Active EP2085728B1 (en) | 2008-01-30 | 2009-01-20 | Rotating oven |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2085728B1 (en) |
AT (1) | ATE536523T1 (en) |
DE (1) | DE102008006682A1 (en) |
ES (1) | ES2378923T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014063807A1 (en) | 2012-10-23 | 2014-05-01 | Tata Steel Uk Limited | Arrangement and method for heating and working sheet material |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014004398A1 (en) | 2014-03-18 | 2015-09-24 | Schuler Pressen Gmbh | rotary kiln |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2020397C1 (en) * | 1991-06-24 | 1994-09-30 | Зубкова Инна Евгеньевна | Annular furnace |
JP2003212577A (en) | 2002-01-22 | 2003-07-30 | Showa Mfg Co Ltd | Heat treatment apparatus for glass substrate |
WO2004009855A1 (en) * | 2002-07-18 | 2004-01-29 | Consolidated Engineering Company, Inc. | Method and system for processing castings |
WO2005050112A2 (en) * | 2003-11-19 | 2005-06-02 | Loi Thermprocess Gmbh | Installation and method for thermally treating workpieces |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1919650A (en) * | 1931-04-21 | 1933-07-25 | George J Hagan | Rotary furnace |
CH200174A (en) * | 1936-12-29 | 1938-09-30 | Bbc Brown Boveri & Cie | Ring channel furnace. |
AT209788B (en) * | 1957-11-19 | 1960-06-25 | Dolomitwerke Ges Mit Beschraen | Ring furnace with furnace chamber that can be loaded from below and emptied from below |
JPS53127312A (en) * | 1976-06-17 | 1978-11-07 | Daido Steel Co Ltd | Continuous atomosphere furnace and method of supplying atomosphere gas therein |
DE3248234C2 (en) * | 1982-12-28 | 1986-06-12 | Keramikindustrieanlagen W.Strohmenger GmbH & Co KG, 8524 Neunkirchen | Tunnel furnace |
-
2008
- 2008-01-30 DE DE102008006682A patent/DE102008006682A1/en not_active Withdrawn
-
2009
- 2009-01-20 ES ES09000693T patent/ES2378923T3/en active Active
- 2009-01-20 EP EP09000693A patent/EP2085728B1/en active Active
- 2009-01-20 AT AT09000693T patent/ATE536523T1/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2020397C1 (en) * | 1991-06-24 | 1994-09-30 | Зубкова Инна Евгеньевна | Annular furnace |
JP2003212577A (en) | 2002-01-22 | 2003-07-30 | Showa Mfg Co Ltd | Heat treatment apparatus for glass substrate |
WO2004009855A1 (en) * | 2002-07-18 | 2004-01-29 | Consolidated Engineering Company, Inc. | Method and system for processing castings |
WO2005050112A2 (en) * | 2003-11-19 | 2005-06-02 | Loi Thermprocess Gmbh | Installation and method for thermally treating workpieces |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 199523, Derwent World Patents Index; AN 1995-177011, XP002524785 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014063807A1 (en) | 2012-10-23 | 2014-05-01 | Tata Steel Uk Limited | Arrangement and method for heating and working sheet material |
Also Published As
Publication number | Publication date |
---|---|
ES2378923T3 (en) | 2012-04-19 |
EP2085728B1 (en) | 2011-12-07 |
ATE536523T1 (en) | 2011-12-15 |
DE102008006682A1 (en) | 2009-08-13 |
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