EP0518280B1 - Walking beam furnace for the heat treatment of piece goods - Google Patents
Walking beam furnace for the heat treatment of piece goods Download PDFInfo
- Publication number
- EP0518280B1 EP0518280B1 EP92109729A EP92109729A EP0518280B1 EP 0518280 B1 EP0518280 B1 EP 0518280B1 EP 92109729 A EP92109729 A EP 92109729A EP 92109729 A EP92109729 A EP 92109729A EP 0518280 B1 EP0518280 B1 EP 0518280B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- longitudinal
- furnace
- oven
- movable
- goods
- 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.)
- Expired - Lifetime
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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
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
- F27D99/0076—Furnace car seals, i.e. seals used in continuous furnaces or kilns for preventing gas or heat exchange between heating chamber and the area comprising driving means
-
- 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 tunnel furnace
- 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 tunnel furnace walking beam furnace
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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 peculiar to furnaces of these types
Definitions
- the invention relates to a step-by-step furnace for the heat treatment of lumpy material, for example sheet metal, with a transport device for conveying the material to be treated through the furnace, which has two groups of longitudinal beams alternately transporting the material step by step. These longitudinal beams are alternately spaced apart, whereby under each longitudinal beam there is provided a substructure that supports and moves with it, which causes the vertical and horizontal movement of the longitudinal beam in the longitudinal direction of the furnace and the movable bottom part of the furnace, which is generally located below it.
- each two adjacent substructures there is a water channel that does not move with the substructures and extends over the entire length of the furnace or hearth, into which immersion strips arranged on the adjacent substructures and movable with them are immersed in order to close the furnace gas-tight on its bottom.
- the water channels are composed of individual longitudinal sections for design reasons.
- the longitudinal sections of the water channels are provided at their abutting front ends with outwardly projecting flanges which are bolted to one another with the interposition of sealing strips in order to achieve a firm and liquid-tight connection of the longitudinal sections placed against one another.
- the piece goods to be treated in the furnace must be supported on at least two longitudinal beams per bar group and that sheet-like piece goods should not or only slightly protrude laterally on its edge for reasons of support
- the smallest possible center-to-center distance between the neighboring walking beams of the two groups of beams are desirable.
- the invention is therefore based on the object of reducing the center-to-center distance of the longitudinal beams in a step-by-step furnace of the type mentioned at the beginning, ie bringing it to a distance of less than 400 mm.
- This is achieved according to the invention in that the longitudinal sections of the water channels are essentially flangeless at their abutting ends and are welded or glued to one another.
- the maximum width dimensions of the water channels are significantly reduced, which also means that mutual minimum distance of the adjacent supporting or substructures of the longitudinal beams located on the sides of the water channels can be reduced.
- This makes it possible to reduce the center distance of two adjacent longitudinal beams to less than 400 mm.
- the welded or adhesive connection can easily be made sufficiently stable and liquid-tight so that there is no risk of leaks in the water channels.
- the longitudinal sections are expediently butt at their ends, that is to say welded or glued to their abutting surfaces. If it should appear necessary for reasons of strength, the longitudinal sections can additionally be attached to at least one longitudinal wall, for example on the underside of the bottom wall, and e.g. by welding, gluing or the like. attached connecting straps to be connected to each other. .
- the water channels cannot be disassembled for repair or renewal purposes and can be moved out of the oven in separate sections and brought back to their place of use, it is expedient for the oven to be at its entry or exit end the ends of the water channels is designed so that the entire length of the water channels can be moved out of the oven in one piece in the longitudinal direction. This can be done in that the furnace is designed at this end free of obstacles for such moving out. This also makes sense because of the simpler assembly.
- the step-by-step furnace shown in the drawing has two groups of longitudinal beams 1, 2 lying next to one another in the cross section of the furnace, the beams 1, 2 of both groups being alternately spaced apart. Under each of these longitudinal beams 1, 2 is a base part 3 forming the hearth of the furnace, which is connected via supports 4 to the longitudinal beam 1 or 2 located above. These bottom parts usually consist of heat-resistant blocks, which are held in a version 5.
- the longitudinal beams 1, 2 of each beam group, together with their base parts 3, perform a vertical and a horizontal transport step movement directed in the longitudinal direction of the furnace, for which purpose a correspondingly movable support and substructure 6 is provided on the underside of each base part.
- water channels 8 are provided, which are filled with water, into which immersion strips 9, which effect the gas closure, are immersed, on the two lateral lower edges of the base parts 3 or on the edge of the outer base parts fixed side walls 7 of the furnace are arranged.
- Water channels 8 and immersion strips 9 extend essentially over the entire length of the furnace or stove, the water channels being fixed in the oven and the immersion strips arranged on the base parts 3 being moved with these base parts.
- each water channel 8 By means of this welded or adhesive connection, the longitudinal sections of each water channel 8 are permanently connected to one another. They cannot therefore, like the releasably bolted longitudinal sections in the previously known step-by-step furnaces of the type mentioned at the outset, be detached from one another for the purpose of repairing or exchanging the channels and individually moved out of the furnace or brought to their place of use.
- the furnace at one of its ends, either at its entry or exit end in the area of the Front ends of the water channels should be designed so that there there are no obstacles for moving the water channels out of the furnace in the longitudinal direction.
- the end walls of the channels should e.g. be removable by screws with the insertion of seals.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Abstract
Description
Die Erfindung betrifft einen Gleichschrittofen für die Wärmebehandlung von stückigem Gut, z.B. Blechen, mit einer Transportvorrichtung zum Hindurchfördern des zu behandelnden Gutes durch den Ofen, die zwei das Gut abwechselnd schrittweise transportierende Gruppen von Längsbalken aufweist. Diese Längsbalken liegen abwechselnd im Abstand nebeneinander, wobei unter jedem Längsbalken eine diesen tragende und mit ihm bewegbare Unterkonstruktion vorgesehen ist, welche die senkrechte und die in Ofenlängsrichtung waagerechte Bewegung des Längsbalkens und des in der Regel unter diesem befindlichen mitbewegbaren Bodenteil des Ofens bewirkt. Zwischen je zwei benachbarten Unterkonstruktionen ist eine etwa über die gesamte Ofen- oder Herdlänge sich erstreckende nicht mit den Unterkonstruktionen bewegbare Wasserrrinne vorgesehen, in welche an den benachbarten Unterkonstruktionen angeordnete und mit diesen bewegbare Tauchleisten eintauchen, um den Ofen an seinem Boden gasdicht abzuschließen. Dabei sind die Wasserrinnen aus konstruktiven Gründen aus einzelnen Längsschüssen zusammengesetzt.The invention relates to a step-by-step furnace for the heat treatment of lumpy material, for example sheet metal, with a transport device for conveying the material to be treated through the furnace, which has two groups of longitudinal beams alternately transporting the material step by step. These longitudinal beams are alternately spaced apart, whereby under each longitudinal beam there is provided a substructure that supports and moves with it, which causes the vertical and horizontal movement of the longitudinal beam in the longitudinal direction of the furnace and the movable bottom part of the furnace, which is generally located below it. Between each two adjacent substructures there is a water channel that does not move with the substructures and extends over the entire length of the furnace or hearth, into which immersion strips arranged on the adjacent substructures and movable with them are immersed in order to close the furnace gas-tight on its bottom. The water channels are composed of individual longitudinal sections for design reasons.
Bei den bekannten Gleichschrittöfen dieser Gattung sind die Längsschüsse der Wasserrinnen an ihren aneinanderstoßenden Stirnenden mit nach außen abstehenden Flanschen versehen, die unter Zwischenanordnung von Dichtstreifen miteinander verbolzt sind, um eine feste und flüssigkeitsdichte Verbindung der aneinandergesetzten Längsschüsse zu erreichen.In the known step-by-step furnaces of this type, the longitudinal sections of the water channels are provided at their abutting front ends with outwardly projecting flanges which are bolted to one another with the interposition of sealing strips in order to achieve a firm and liquid-tight connection of the longitudinal sections placed against one another.
Im Hinblick darauf, daß das im Ofen zu behandelnde Stückgut auf mindestens zwei Längsbalken je Balkengruppe zur Auflage gelangen muß und blechartiges Stückgut aus Unterstützungsgründen an seinem Rand nicht oder nur geringfügig über die das Gut tragenden Hubbalken seitlich hinausragen soll, ist ein möglichst geringer Mittenabstand zwischen den benachbarten Hubbalken der beiden Balkengruppen erwünscht. Bei den bisher bekannten Gleichschrittöfen war es jedoch aufgrund der konstruktiv bedingten Querschnittsmindestabmessungen der Wasserrinnen und Tauchleisten sowie der auf etwa gleicher Höhe befindlichen Trag- und Unterkonstruktionen der Längsbalken nicht möglich, einen Mittenabstand von weniger als 400 mm zu realisieren, so daß bisher der Transport dünner Bleche wegen der dabei gegebenen Gefahr eines zu großen seitlichen Randüberstandes große Probleme verursacht.In view of the fact that the piece goods to be treated in the furnace must be supported on at least two longitudinal beams per bar group and that sheet-like piece goods should not or only slightly protrude laterally on its edge for reasons of support, the smallest possible center-to-center distance between the neighboring walking beams of the two groups of beams are desirable. In the step-by-step furnaces known to date, however, it was not possible to achieve a center distance of less than 400 mm due to the design-related minimum cross-sectional dimensions of the water channels and dip strips and the supporting and substructures of the longitudinal beams located at approximately the same height, so that previously thin sheets were transported because of the risk of excessive side overhang that causes great problems.
Der Erfindung liegt daher die Aufgabe zugrunde, bei einem Gleichschrittofen der eingangs genannten Gattung den Mittenabstand der Längsbalken zu reduzieren, d.h. auf einen Abstand von unter 400 mm zu bringen. Dies wird erfindungsgemäß dadurch erreicht, daß die Längsschüsse der Wasserrinnen an ihren aneinanderstoßenden Stirnenden im wesentlichen flanschlos ausgebildet und miteinander verschweißt oder verklebt sind. Durch den Wegfall der Flansche werden die maximalen Breitenabmessungen der Wasserrinnen erheblich reduziert, wodurch auch der gegenseitige Mindestabstand der an den Seiten der Wasserrinnen befindlichen benachbarten Trag- oder Unterkonstruktionen der Längsbalken verringert werden kann. Hierdurch ist es möglich, einen Mittenabstand von zwei benachbarten Längsbalken auf weniger als 400 mm zu reduzieren. Die Schweiß- oder Klebeverbindung kann problemlos ausreichend stabil und flüssigkeitsdicht ausgeführt werden, so daß die Gefahr von Leckstellen in den Wasserrinnen nicht besteht.The invention is therefore based on the object of reducing the center-to-center distance of the longitudinal beams in a step-by-step furnace of the type mentioned at the beginning, ie bringing it to a distance of less than 400 mm. This is achieved according to the invention in that the longitudinal sections of the water channels are essentially flangeless at their abutting ends and are welded or glued to one another. By eliminating the flanges, the maximum width dimensions of the water channels are significantly reduced, which also means that mutual minimum distance of the adjacent supporting or substructures of the longitudinal beams located on the sides of the water channels can be reduced. This makes it possible to reduce the center distance of two adjacent longitudinal beams to less than 400 mm. The welded or adhesive connection can easily be made sufficiently stable and liquid-tight so that there is no risk of leaks in the water channels.
Bei der erfindungsgemäßen flanschlosen Ausbildung der Längsschüsse werden diese an ihren Stirnenden zweckmäßig stumpf, also an ihren Stoßflächen verschweißt oder verklebt. Wenn es aus Festigkeitsgründen erforderlich scheinen sollte, können die Längsschüsse zusätzlich durch an mindestens einer Längswand, beispielsweise an der Unterseite der Bodenwand angesetzt und dort z.B. durch Schweißen, Kleben od.dgl. befestigte Verbindungslaschen miteinander verbunden sein. .In the flangeless design of the longitudinal sections according to the invention, they are expediently butt at their ends, that is to say welded or glued to their abutting surfaces. If it should appear necessary for reasons of strength, the longitudinal sections can additionally be attached to at least one longitudinal wall, for example on the underside of the bottom wall, and e.g. by welding, gluing or the like. attached connecting straps to be connected to each other. .
Da bei der erfindungsgemäßen unlösbaren Verbindung der Längsschüsse die Wasserrinnen zu Reparatur- oder Erneuerungszwecken nicht zerlegt und in getrennten Schüssen aus dem Ofen herausbewegt und wieder an ihren Einsatzort gebracht werden können, ist es zweckmäßig, daß der Ofen an seinem Ein- oder an seinem Austrittsende vor den Stirnenden der Wasserrinnen so ausgebildet ist, daß aus ihm die Wasserrinnen in ihrer gesamten Länge einstückig in Längsrichtung aus dem Ofen herausbewegt werden können. Dies kann dadurch geschehen, daß der Ofen an diesem Ende frei von Hindernissen für ein solches Herausbewegen ausgebildet ist. Dies ist auch wegen der einfacheren Montage sinnvoll.Since in the inseparable connection of the longitudinal sections according to the invention, the water channels cannot be disassembled for repair or renewal purposes and can be moved out of the oven in separate sections and brought back to their place of use, it is expedient for the oven to be at its entry or exit end the ends of the water channels is designed so that the entire length of the water channels can be moved out of the oven in one piece in the longitudinal direction. This can be done in that the furnace is designed at this end free of obstacles for such moving out. This also makes sense because of the simpler assembly.
In der Zeichnung ist ein besonders vorteilhaftes Ausführungsbeispiel des erfindungsgemäßen Gleichschrittofens dargestellt, das im folgenden näher beschrieben wird:
- Fig. 1
- zeigt einen Querschnitt durch den unteren Herdteil dieses Gleichschrittofens in vereinfachter Darstellung;
- Fig. 2
- zeigt eine bei diesem Gleichschrittofen vorgesehene Wasserrinne in abgebrochener Darstellung in Schrägansicht.
- Fig. 1
- shows a cross section through the lower hearth part of this step-by-step furnace in a simplified representation;
- Fig. 2
- shows a water channel provided in this step-by-step furnace in a broken view in an oblique view.
Der in der Zeichnung dargestellte Gleichschrittofen hat zwei Gruppen von im Querschnitt des Ofens nebeneinanderliegenden Längsbalken 1, 2, wobei die Balken 1, 2 beider Gruppen abwechselnd im Abstand nebeneinander liegen. Unter jedem dieser Längsbalken 1, 2 befindet sich ein den Herdboden des Ofens bildender Bodenteil 3, der über Stützen 4 mit dem darüber befindlichen Längsbalken 1 oder 2 verbunden ist. Diese Bodenteile bestehen in der Regel aus hitzebeständigen Blöcken, die in einer Fassung 5 gehalten sind.The step-by-step furnace shown in the drawing has two groups of longitudinal beams 1, 2 lying next to one another in the cross section of the furnace, the beams 1, 2 of both groups being alternately spaced apart. Under each of these longitudinal beams 1, 2 is a base part 3 forming the hearth of the furnace, which is connected via supports 4 to the longitudinal beam 1 or 2 located above. These bottom parts usually consist of heat-resistant blocks, which are held in a
Die Längsbalken 1, 2 jeder Balkengruppe führen mit ihren Bodenteilen 3 gemeinsam eine senkrechte und eine in Ofenlängsrichtung gerichtete waagerechte Transportschrittbewegung aus, wozu an der Unterseite jeden Bodenteils eine entsprechend bewegbare Trag- und Unterkonstruktion 6 vorgesehen ist.The longitudinal beams 1, 2 of each beam group, together with their base parts 3, perform a vertical and a horizontal transport step movement directed in the longitudinal direction of the furnace, for which purpose a correspondingly movable support and
Um einen gasdichten Abschluß des Ofens an seiner Unterseite zu erzielen, sind unter den Lücken zwischen den Bodenteilen 3 untereinander bzw. zwischen den äußeren Bodenteilen 3 und den benachbarten feststehenden Seitenwänden 7 des Ofens seitlich der Trag- und Unterkonstruktionen 6 Wasserrinnen 8 vorgesehen, die mit Wasser gefüllt sind, in welches den Gasabschluß bewirkende Tauchleisten 9 eintauchen, die an den beiden seitlichen unteren Rändern der Bodenteile 3 bzw. an dem den äußeren Bodenteilen zugewandten Rand der feststehenden Seitenwände 7 des Ofens angeordnet sind. Wasserrinnen 8 und Tauchleisten 9 erstrecken sich im wesentlichen über die gesamte Ofen- oder Herdlänge, wobei die Wasserrinnen im Ofen feststehen und die an den Bodenteilen 3 angeordneten Tauchleisten mit diesen Bodenteilen mitbewegt werden.In order to achieve a gas-tight closure of the furnace on its underside, are fixed under the gaps between the bottom parts 3 with each other or between the outer bottom parts 3 and the adjacent ones Sidewalls 7 of the furnace to the side of the support and
Wegen der relativ großen Länge der Wasserrinnen bestehen diese jeweils aus einer Anzahl von in Rinnenlängsrichtung hintereinander angeordneten Längsschüssen 10 mit über ihre Länge gleichbleibenden Wanddicken. Diese Längsschüsse sind an ihren Stirnenden mit ihren stumpf aneinander stoßenden Flächen flüssigkeitsdicht verschweißt oder verklebt.Because of the relatively large length of the water channels, they each consist of a number of
Durch diese Schweiß- oder Klebverbindung sind die Längsschüsse jeder Wasserrinne 8 unlösbar miteinander verbunden. Sie können daher nicht, wie die miteinander lösbar verbolzten Längsschüsse bei den bisher bekannten Gleichschrittöfen der eingangs genannten Gattung zum Zwecke der Reparatur oder des Austausches der Rinnen voneinander gelöst und einzeln aus dem Ofen herausbewegt oder an ihren Einsatzort gebracht werden. Da ein Herausbewegen der Wasserrinnen bei dem eben beschriebenen Gleichschrittofen nur in ihrer Gesamtheit, also in ihrer gesamten Länge möglich ist, sollte, um eine Reparatur oder ein Auswechseln der Wasserrinnen in möglichst einfacher Weise durchführen zu können, ohne daß eine umfangreiche Demontage von Ofenteilen erforderlich wird, der Ofen an einem seiner Enden, also entweder an seinem Eintritts- oder an seinem Austrittsende im Bereich der Stirnenden der Wasserrinnen so ausgebildet sein, daß er dort frei von Hindernissen für ein in Längsrichtung aus dem Ofen erfolgendes Herausbewegen der Wasserrinnen ist.By means of this welded or adhesive connection, the longitudinal sections of each
Um die Wasserrinnen in ihrer ganzen Länge ohne vorherige Demontage der Tauchleisten demontieren und remontieren zu können, sollten die Stirnwände der Rinnen z.B. durch Schrauben unter Einfügung von Dichtungen abnehmbar sein.In order to be able to disassemble and reassemble the water channels in their entire length without first removing the dip rails, the end walls of the channels should e.g. be removable by screws with the insertion of seals.
Claims (6)
- Uniform step oven for the heat treatment of piece goods, eg metal plates and sheets, with a transport device for the conveyance of the goods to be heated through the oven comprising two groups of longitudinal beams transporting the goods alternating by steps, which are located side by side at an alternating distance, wherein under each longitudinal beam a lower construction carrying the latter and movable with it is provided and between each two lower constructions a water channel not movable with the latter and extending approximately over the entire length of the oven or hearth is provided, which water channel is composed of individual longitudinal chutes and into which immersion strips, arranged on the neighbouring lower constructions on both sides and movable with the latter, dip, characterised in that the longitudinal chutes (10) are constructed in essentially flangeless manner at the end faces where they meet and are welded or luted to one another.
- Uniform step oven according to claim 1, characterised in that the longitudinal chutes (10) are welded or luted by their contact surfaces at their end faces.
- Uniform step oven according to claim 1, characterised in that the longitudinal chutes (10) are additionally connected by connecting links applied on at least one longitudinal wall and fixed there, eg by welding, luting or the like.
- Uniform step oven according to claim 3, characterised in that the connecting links are connected on the underside of the base wall of the longitudinal chutes.
- Uniform step oven according to one or several of the claims 1-4, characterised in that at least one end of the oven in front of the end faces of the water channels (8) is constructed free of obstacles to removal of the water channels from the oven in their entire length taking place in the longitudinal direction.
- Uniform step oven according to one or several of the claims 1-4, characterised in that the end walls of the water channels are fastened in detachable manner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4119708A DE4119708A1 (en) | 1991-06-14 | 1991-06-14 | SIMPLE STEPS FOR HEAT TREATMENT OF PIECE OF GOODS |
| DE4119708 | 1991-06-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0518280A1 EP0518280A1 (en) | 1992-12-16 |
| EP0518280B1 true EP0518280B1 (en) | 1996-01-10 |
Family
ID=6433983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92109729A Expired - Lifetime EP0518280B1 (en) | 1991-06-14 | 1992-06-10 | Walking beam furnace for the heat treatment of piece goods |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5282742A (en) |
| EP (1) | EP0518280B1 (en) |
| AT (1) | ATE132962T1 (en) |
| DE (2) | DE4119708A1 (en) |
| DK (1) | DK0518280T3 (en) |
| ES (1) | ES2084874T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5700456B2 (en) * | 2012-06-22 | 2015-04-15 | 中外炉工業株式会社 | Walking beam heating furnace and heat treatment method for workpiece |
| FR3090836B1 (en) * | 2018-12-24 | 2021-04-16 | Fives Stein | "Furnace with movable beams allowing continuous grinding and removal of scale" |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1185420A (en) * | 1956-03-19 | 1959-07-31 | Svenska Metallverkens Ugns Akt | Improvements made to ovens with mobile beams |
| DE1533980A1 (en) * | 1967-03-18 | 1970-02-12 | Koppers Wistra Ofenbau Gmbh | Walking beam furnace |
| DE1583342B1 (en) * | 1967-10-25 | 1973-01-25 | Brobu Industrie Ofenbau | Walking beam furnace |
| US3540706A (en) * | 1969-02-19 | 1970-11-17 | Salem Brosius Inc | Heating furnace with skid rails |
| BE794696A (en) * | 1972-01-29 | 1973-05-16 | Salem Engineering Co Ltd | IMPROVEMENTS RELATED TO MOBILE BEAM OVENS |
| DE2926661A1 (en) * | 1979-07-02 | 1981-01-15 | Italimpianti Deutschland Indus | RIFLE BAR OVEN |
| FR2542433B1 (en) * | 1983-03-11 | 1988-01-29 | Stein Heurtey | REFRACTORY BEAM OVENS |
| JPS6237313A (en) * | 1985-08-09 | 1987-02-18 | Chugai Ro Kogyo Kaisha Ltd | Walking beam type heating furnace for billet |
| DE3633374A1 (en) * | 1986-10-01 | 1988-04-14 | Ruhrgas Ag | SIMPLE STEPS FOR HEAT TREATMENT OF SHEETS |
-
1991
- 1991-06-14 DE DE4119708A patent/DE4119708A1/en not_active Withdrawn
-
1992
- 1992-06-10 EP EP92109729A patent/EP0518280B1/en not_active Expired - Lifetime
- 1992-06-10 ES ES92109729T patent/ES2084874T3/en not_active Expired - Lifetime
- 1992-06-10 AT AT92109729T patent/ATE132962T1/en not_active IP Right Cessation
- 1992-06-10 DK DK92109729.1T patent/DK0518280T3/en active
- 1992-06-10 DE DE59204978T patent/DE59204978D1/en not_active Expired - Fee Related
- 1992-06-12 US US07/897,399 patent/US5282742A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2084874T3 (en) | 1996-05-16 |
| US5282742A (en) | 1994-02-01 |
| EP0518280A1 (en) | 1992-12-16 |
| DE4119708A1 (en) | 1992-12-17 |
| ATE132962T1 (en) | 1996-01-15 |
| DK0518280T3 (en) | 1996-02-05 |
| DE59204978D1 (en) | 1996-02-22 |
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