WO1994011537A1 - Industrial furnace - Google Patents
Industrial furnace Download PDFInfo
- Publication number
- WO1994011537A1 WO1994011537A1 PCT/EP1993/003141 EP9303141W WO9411537A1 WO 1994011537 A1 WO1994011537 A1 WO 1994011537A1 EP 9303141 W EP9303141 W EP 9303141W WO 9411537 A1 WO9411537 A1 WO 9411537A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hood
- industrial furnace
- water
- cooling water
- outer edge
- 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.)
- Ceased
Links
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
- C21D9/663—Bell-type furnaces
- C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
-
- 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
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
- F27B9/045—Furnaces with controlled atmosphere
-
- 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
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/08—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated through chamber walls
- F27B9/082—Muffle furnaces
- F27B9/088—Series of separate muffles conveyed through the 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
- F27D9/00—Cooling of furnaces or of charges therein
-
- 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
Definitions
- the invention relates to an industrial furnace with a fixed base body for receiving an annealing material, with a movable protective hood arranged on the base body and enclosing the annealing material in a gas-tight manner, the protective hood having a base element which rests with its contact surface on the base body.
- the protective hood ensures that the furnace atmosphere does not come into contact with the outside atmosphere during the heating or cooling process.
- the protective hood is surrounded by a heating hood.
- a cooling hood is fitted instead of the heating hood. If necessary, water is sprayed onto the protective hood during the cooling process, which runs off on the protective hood and the cooling hood.
- the base element of the protective hood expediently has a circumferential collecting channel with a drain for the cooling water.
- the heating hood is provided with an all-round heating hood seal.
- the residual water has the further disadvantage that the heating hood seal lying in the collecting duct when the heating hood is fitted comes into contact with the liquid. The liquid penetrating into the seal causes hardening, so that the flexibility is impaired and the sealing effect deteriorates.
- the invention is accordingly based on the object to design an industrial furnace of the type mentioned in such a way that an accumulation of residual water on the base element of the protective hood is avoided.
- the industrial furnace according to the invention is characterized in that the base element on the side opposite the support surface has a roof-like drain surface with a slope towards an outer edge
- the design of the drainage surface according to the invention ensures that the cooling water sprayed on during the cooling process drains off completely and thus no damage to the glow material can take place when the protective hood is lifted off.
- a further important advantage to be mentioned is that, when the heating hood is fitted, the one resting on the drainage surface The heating hood seal is not exposed to any residual water and the hardening of the seal caused by it does not occur. Thus, the seal retains its flexibility and thus the sealing effect.
- the floor element according to the invention can be manufactured simply and inexpensively
- the support side has a circumferential ab ⁇ ßkante, so that the water adhering to the support surface by adhesive forces drips on this edge at the latest and does not reach the basic body
- the base element can be pressed onto the base body by means of a pressing device. Due to the design according to the invention such that the pressing device rests punctually on the drain surface by means of several support bolts, the cooling water located on the drain surface is spaced apart from one another arranged support bolt can run freely
- the basic body is surrounded by a collecting duct which has a drainage device and is arranged below the outer edge.
- the cooling water dripping from the base element is collected in the collecting duct and drained off via the outlet device
- the accompanying drawing shows a schematic partial section through the support area of the protective hood of an industrial furnace as an exemplary embodiment.
- the industrial furnace has a base body 1 and a protective hood 2.
- the basic body 1 is fixedly arranged on a base 3.
- the seal between the protective hood 2 and the base body 1 takes place in the usual manner by means of a seal 5 arranged in the base body 1.
- the protective hood 2 is composed essentially of a cylindrical hood element 6 and an annular base element 7.
- the latter has a roof-like drainage surface 8 with a slope to an outer edge 9 on the side opposite the support surface 4. This is rounded and forms the transition from the drainage surface 8 to a substantially vertical side wall 10.
- the rounded outer edge 9 promotes the drainage of the cooling water from the drainage surface 8.
- a tear-off edge 12 is formed. This prevents the cooling water adhering to the support surface 4 by adhesive forces from reaching the base body 1.
- the cooling water (not shown), which runs on the hood element 6 on the outside and on the inside of a cooling hood 13 on the inside in the direction of the bottom element 7, reaches the drainage surface 8 and runs from it in the direction of the outer edge 9. Then it runs along the side wall 10 and drips either directly from the side wall 10 or only at the tear-off edge 12.
- the cooling water is collected in a collecting duct 14 arranged under the side wall 10 or the tear-off edge 12 on the substrate 3.
- the cooling water collected in the collecting duct 14 can be drained off via a drainage device 15.
- the base element 7 is pressed onto the base body 1 by means of an annular pressing device 16 arranged in the region of the outer edge 9 for the purpose of a gas-tight seal.
- the pressing device 16 lies only point-wise on the run-off surface 8 with its support brackets 17 designed as spherical caps.
- the cooling water can run freely between the support bolts 17 which are arranged at a distance from one another.
- the hood element 6 can have a conical, spherical, elliptical or box-shaped body shape with a corresponding base element 7.
- the base element 7 instead of the horizontally formed support surface 4 shown in the exemplary embodiment, this could also have a roof-like inclination, for example, so that the drain surface 8 and the storage surface 4 are arranged essentially parallel to one another.
- a side wall 10 is dispensed with, so that the drainage surface 8 forms an acute angle with the horizontally running support surface 4.
- the base element can also be manufactured so that it has a cavity inside.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
IndustrieofenIndustrial furnace
Die Erfindung betrifft einen Industrieofen mit einem feststehenden Grundkörper zur Aufnahme eines Glühgutes, mit einer auf dem Grundkörper angeordneten bewegbaren Schutzhaube, die das Glühgut gasdicht einschließt, wobei die Schutzhaube ein Bo¬ denelement aufweist, welches mit seiner Auflagefläche auf dem Grundkörper aufliegt.The invention relates to an industrial furnace with a fixed base body for receiving an annealing material, with a movable protective hood arranged on the base body and enclosing the annealing material in a gas-tight manner, the protective hood having a base element which rests with its contact surface on the base body.
Die Schutzhaube sorgt dafür, daß die Ofenatmosphäre während des Erwärm- oder Kühlprozesses nicht mit der Außenatmosphäre in Verbindung tritt. Während des Glüh¬ prozesses ist die Schutzhaube von einer Heizhaube umgeben. Im Falle der Kühlung wird anstatt der Heizhaube eine Kühlhaube aufgesetzt. Nach Erfordernis wird während des Kühlprozesses Wasser auf die Schutzhaube gesprüht, weiches an der Schutz- und der Kühlhaube abläuft. Aus diesem Grund weist das Bodenelement der Schutzhaube zweckmäßigerweise einen umlaufenden Sammelkanal mit Abfluß für das Kühlwasser auf.The protective hood ensures that the furnace atmosphere does not come into contact with the outside atmosphere during the heating or cooling process. During the glowing process, the protective hood is surrounded by a heating hood. In the case of cooling, a cooling hood is fitted instead of the heating hood. If necessary, water is sprayed onto the protective hood during the cooling process, which runs off on the protective hood and the cooling hood. For this reason, the base element of the protective hood expediently has a circumferential collecting channel with a drain for the cooling water.
In der Regel verbleibt in dem Sammelkanal der Schutzhaube Restwasser, da das Kühlwasser aufgrund von fertigungsbedingten Unebenheiten nicht vollständig abläuft. Beim Abheben der Schutzhaube wird diese häufig in eine Schwingbewegung versetzt, so daß das Restwasser unbeabsichtigt aus dem Sammelkanai austritt und auf das Glühgut tropft. Dies führt meist zu einer Schädigung des Glühgutes.As a rule, residual water remains in the collecting duct of the protective hood, since the cooling water does not drain completely due to production-related unevenness. When the protective hood is lifted off, it is often set into an oscillating movement so that the residual water unintentionally emerges from the collecting channel and drips onto the annealing material. This usually leads to damage to the annealing material.
Die Heizhaube ist mit einer umlaufenden Heizhaubendichtung versehen. Das Restwas¬ ser hat den weiteren Nachteil, daß die bei aufgesetzter Heizhaube im Sammelkanal aufliegende Heizhaubendichtung mit der Flüssigkeit in Berührung kommt. Die in die Dichtung eindringende Flüssigkeit bewirkt eine Verhärtung, so daß die Flexibilität be¬ einträchtigt wird und sich die Dichtwirkung verschlechtert.The heating hood is provided with an all-round heating hood seal. The residual water has the further disadvantage that the heating hood seal lying in the collecting duct when the heating hood is fitted comes into contact with the liquid. The liquid penetrating into the seal causes hardening, so that the flexibility is impaired and the sealing effect deteriorates.
Der Erfindung liegt dementsprechend die Aufgabe zugrunde, einen Industrieofen der eingangs genannten Art derart zu gestalten, daß eine Ansammlung von Restwasser auf dem Bodenelement der Schutzhaube vermieden wird. Zur Losung dieser Aufgabe ist der Industrieofen erfindungsgemaß dadurch gekenn¬ zeichnet, daß das Bodenelement auf der der Auflageflache gegenüberliegenden Seite eine dachartig ausgebildete Ablaufflache mit Gefalle zu einem Außenrand hin aufweistThe invention is accordingly based on the object to design an industrial furnace of the type mentioned in such a way that an accumulation of residual water on the base element of the protective hood is avoided. To solve this problem, the industrial furnace according to the invention is characterized in that the base element on the side opposite the support surface has a roof-like drain surface with a slope towards an outer edge
Durch die erfindungsgemaße Ausbildung der Ablaufflache wird erreicht daß das wah¬ rend des Kuhlprozesses aufgesprühte Kuhlwasser restlos ablauft und somit keine Schädigung des Gluhgutes beim Abheben der Schutzhaube stattfinden kann Als we¬ sentlicher weiterer Vorteil ist zu nennen, daß bei aufgesetzter Heizhaube die auf der Ablaufflache aufliegende Heizhaubendichtung keinem Restwasser ausgesetzt ist und eine davon verursachte Aushärtung der Dichtung ausbleibt Somit behalt die Dichtung ihre Flexibilität und damit die abdichtende Wirkung Schließlich sei erwähnt, daß das erfindungsgemaße Bodenelement einfach und kostengünstig gefertigt werden kannThe design of the drainage surface according to the invention ensures that the cooling water sprayed on during the cooling process drains off completely and thus no damage to the glow material can take place when the protective hood is lifted off. A further important advantage to be mentioned is that, when the heating hood is fitted, the one resting on the drainage surface The heating hood seal is not exposed to any residual water and the hardening of the seal caused by it does not occur. Thus, the seal retains its flexibility and thus the sealing effect. Finally, it should be mentioned that the floor element according to the invention can be manufactured simply and inexpensively
Eine vorteilhafte Ausgestaltung der Erfindung ist dadurch gegeben, daß der Außenrand des Bodenelementes über den Grundkorper hinausragt, so daß das vom Bodenele¬ ment abtropfende Kuhlwasser nicht auf den Grundkorper gelangtAn advantageous embodiment of the invention is given in that the outer edge of the base element projects beyond the base body, so that the cooling water dripping from the base element does not reach the base body
Nach einem weiteren vorteilhaften Merkmal der Erfindung weist die Auflageseite eine umlaufende Abπßkante auf, damit auch das durch Adhäsionskräfte an der Auflagefla¬ che anhaftende Wasser spätestens an dieser Kante abtropft und nicht an den Grund¬ korper gelangtAccording to a further advantageous feature of the invention, the support side has a circumferential abπßkante, so that the water adhering to the support surface by adhesive forces drips on this edge at the latest and does not reach the basic body
Zwecks gasdichtem Abschluß der Schutzhaube kann das Bodenelement mittels einer Anpressvorrichtung auf den Grundkorper gedruckt werden Durch die erfindungsge¬ maße Ausbildung derart daß die Anpressvorrichtung mittels mehrerer Auflagebolzen punktformig auf der Ablaufflache aufliegt, wird erreicht, daß das auf der Ablaufflache befindliche Kuhlwasser zwischen den mit Abstand voneinander angeordneten Auflage¬ bolzen ungehindert ablaufen kannFor the gas-tight closure of the protective hood, the base element can be pressed onto the base body by means of a pressing device. Due to the design according to the invention such that the pressing device rests punctually on the drain surface by means of several support bolts, the cooling water located on the drain surface is spaced apart from one another arranged support bolt can run freely
In Weiterbildung der Erfindung ist der Grundkorper von einem Sammelkanal umgeben, welcher eine Abiaufeinrichtung aufweist und unterhalb des Außenrandes angeordnet ist Das vom Bodenelement abtropfende Kuhlwasser wird im Sammelkanal aufgefan¬ gen und über die Ablaufeinrichtung abgeleitetIn a further development of the invention, the basic body is surrounded by a collecting duct which has a drainage device and is arranged below the outer edge. The cooling water dripping from the base element is collected in the collecting duct and drained off via the outlet device
Als erfindungswesentlich offenbart gelten auch solche Kombinationen der erfindungs- gemaßen Merkmale, die von den oben diskutierten Verknüpfungen abweichen Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels im Zusammenhang mit der beiliegenden Zeichnung näher erläutert.Combinations of the features according to the invention that differ from the links discussed above are also considered to be disclosed as essential to the invention The invention is explained below with reference to a preferred embodiment in connection with the accompanying drawings.
Die beigefügte Zeichnung stellt in einer einzigen Figur einen schematischen Teiischnitt durch den Auflagebereich der Schutzhaube eines Industrieofens als Ausführungsbei¬ spiel dar.In a single figure, the accompanying drawing shows a schematic partial section through the support area of the protective hood of an industrial furnace as an exemplary embodiment.
Der Industrieofen weist einen Grundkörper 1 und eine Schutzhaube 2 auf. Der Grund¬ körper 1 ist feststehend auf einem Untergrund 3 angeordnet. Die mit einer Auflageflä¬ che 4 horizontal auf den Grundkörper 1 aufliegende Schutzhaube 2 ist im wesentlichen in vertikaler Richtung bewegbar. Die Abdichtung zwischen der Schutzhaube 2 und dem Grundkörper 1 erfolgt in üblicher Art und Weise durch eine im Grundkörper 1 angeord¬ nete Dichtung 5.The industrial furnace has a base body 1 and a protective hood 2. The basic body 1 is fixedly arranged on a base 3. The protective hood 2, which rests horizontally on the base body 1 with a support surface 4, can be moved essentially in the vertical direction. The seal between the protective hood 2 and the base body 1 takes place in the usual manner by means of a seal 5 arranged in the base body 1.
Die Schutzhaube 2 setzt sich im wesentlichen aus einem zylinderförmigen Hauben¬ element 6 und einem kreisringförmigen Bodenelement 7 zusammen. Letzteres weist auf der der Auflagefläche 4 gegenüberliegenden Seite eine dachartig ausgebildete Ablauffläche 8 mit Gefälle zu einem Außenrand 9 hin auf. Dieser ist abgerundet und bildet den Übergang von der Ablauffläche 8 zu einer im wesentlichen senkrecht ver¬ laufenden Seitenwand 10. Der abgerundete Außenrand 9 begünstigt den Ablauf des Kühlwassers von der Ablauffläche 8. Durch eine im äußeren Bereich der Auflageflä¬ che 4 angeordnete kreisförmig umlaufende Nut 11 wird eine Abrißkante 12 gebildet. Diese verhindert, daß das durch Adhäsionskräfte an der Auflagefiäche 4 haftende Kühlwasser an den Grundkörper 1 gelangt.The protective hood 2 is composed essentially of a cylindrical hood element 6 and an annular base element 7. The latter has a roof-like drainage surface 8 with a slope to an outer edge 9 on the side opposite the support surface 4. This is rounded and forms the transition from the drainage surface 8 to a substantially vertical side wall 10. The rounded outer edge 9 promotes the drainage of the cooling water from the drainage surface 8. Through a circular circumferential groove arranged in the outer area of the support surface 4 11 a tear-off edge 12 is formed. This prevents the cooling water adhering to the support surface 4 by adhesive forces from reaching the base body 1.
Während des Kühlprozesses gelangt das am Haubenelement 6 außenseitig und an einer Kühihaube 13 innenseitig in Richtung Bodenelement 7 ablaufende, nicht dar¬ gestellte, Kühlwasser auf die Ablauffläche 8 und läuft von dieser in Richtung Außen¬ rand 9 ab. Anschließend läuft es an der Seitenwand 10 entlang und tropft entweder direkt von der Seitenwand 10 oder erst an der Abrißkante 12 ab. Das Kühlwasser wird in einem unter der Seitenwand 10 bzw. der Abrißkante 12 auf dem Untergrund 3 ange¬ ordneten Sammelkanal 14 aufgefangen. Über eine Ablaufeiπrichtung 15 kann das im Sammelkanal 14 aufgefangene Kühlwasser abgeleitet werden.During the cooling process, the cooling water (not shown), which runs on the hood element 6 on the outside and on the inside of a cooling hood 13 on the inside in the direction of the bottom element 7, reaches the drainage surface 8 and runs from it in the direction of the outer edge 9. Then it runs along the side wall 10 and drips either directly from the side wall 10 or only at the tear-off edge 12. The cooling water is collected in a collecting duct 14 arranged under the side wall 10 or the tear-off edge 12 on the substrate 3. The cooling water collected in the collecting duct 14 can be drained off via a drainage device 15.
Das Bodenelement 7 wird mittels einer im Bereich des Außenrandes 9 angeordneten ringförmigen Anpreßvorrichtung 16 zum Zwecke einer gasdichten Abdichtung auf den Grundkörper 1 gedrückt. Die Anpreßvorrichtung 16 liegt dabei nur mit ihren als Kugel¬ kappen ausgebildeten Auflageboizen 17 punktförmig auf der Ablauffläche 8 auf. Zwischen den mit Abstand von einander angeordneten Auflagebolzen 17 kann das Kühlwasser ungehindert ablaufen.The base element 7 is pressed onto the base body 1 by means of an annular pressing device 16 arranged in the region of the outer edge 9 for the purpose of a gas-tight seal. The pressing device 16 lies only point-wise on the run-off surface 8 with its support brackets 17 designed as spherical caps. The cooling water can run freely between the support bolts 17 which are arranged at a distance from one another.
Im Rahmen der Erfindung sind ohne weiteres Abwandlungsmόglichkeiten gegeben. So kann das Haubenelement 6 beispielsweise eine kegel-, kugel-, ellipsen- oder kasten¬ förmige Körperform mit entsprechendem Bodenelement 7 aufweisen. Auch bei dem Bodenelement 7 sind verschiedene Gestaltungsmöglichkeiten denkbar. Anstatt der im Ausführungsbeispiel dargestellten horizontal ausgebildeten Auflagefläche 4 könnte diese beispielsweise ebenfalls eine dachartige Neigung aufweisen, so daß Ablaufflä¬ che 8 und Ablagefläche 4 im wesentlichen parallel zueinander angeordnet sind. Ferner besteht auch die Möglichkeit, daß auf eine Seitenwand 10 verzichtet wird, so daß die Ablauffläche 8 einen spitzen Winkel mit der horizontal verlaufenden Auflagefiäche 4 bildet. Im übrigen kann das Bodenelement auch so gefertigt werden, so daß es im Inneren einen Hohlraum aufweist. Within the scope of the invention, there are no further modification possibilities. For example, the hood element 6 can have a conical, spherical, elliptical or box-shaped body shape with a corresponding base element 7. Various design options are also conceivable for the base element 7. Instead of the horizontally formed support surface 4 shown in the exemplary embodiment, this could also have a roof-like inclination, for example, so that the drain surface 8 and the storage surface 4 are arranged essentially parallel to one another. There is also the possibility that a side wall 10 is dispensed with, so that the drainage surface 8 forms an acute angle with the horizontally running support surface 4. Otherwise, the base element can also be manufactured so that it has a cavity inside.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9215523U DE9215523U1 (en) | 1992-11-14 | 1992-11-14 | Industrial furnace |
| DEG9215523.5U | 1992-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1994011537A1 true WO1994011537A1 (en) | 1994-05-26 |
Family
ID=6886037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1993/003141 Ceased WO1994011537A1 (en) | 1992-11-14 | 1993-11-10 | Industrial furnace |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE9215523U1 (en) |
| WO (1) | WO1994011537A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9215523U1 (en) * | 1992-11-14 | 1993-01-07 | Loi Essen Industrieofenanlagen GmbH, 4300 Essen | Industrial furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3199853A (en) * | 1962-04-25 | 1965-08-10 | Porter Co Inc H K | Bell-type annealing furnace and method of sealing same |
| DE1204246B (en) * | 1955-10-24 | 1965-11-04 | Lee Wilson | Bell furnace for the heat treatment of rolled wires, rods or the like. |
| FR1552877A (en) * | 1967-08-18 | 1969-01-10 | ||
| DE3939383A1 (en) * | 1989-11-29 | 1991-06-06 | Btf Edelstahlverarbeitung Gmbh | Device for cooling sealing ring in cupola furnace - has seal in steel ring welded into base and surrounded on three sides by cooling canal |
| DE9215523U1 (en) * | 1992-11-14 | 1993-01-07 | Loi Essen Industrieofenanlagen GmbH, 4300 Essen | Industrial furnace |
-
1992
- 1992-11-14 DE DE9215523U patent/DE9215523U1/en not_active Expired - Lifetime
-
1993
- 1993-11-10 WO PCT/EP1993/003141 patent/WO1994011537A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204246B (en) * | 1955-10-24 | 1965-11-04 | Lee Wilson | Bell furnace for the heat treatment of rolled wires, rods or the like. |
| US3199853A (en) * | 1962-04-25 | 1965-08-10 | Porter Co Inc H K | Bell-type annealing furnace and method of sealing same |
| FR1552877A (en) * | 1967-08-18 | 1969-01-10 | ||
| DE3939383A1 (en) * | 1989-11-29 | 1991-06-06 | Btf Edelstahlverarbeitung Gmbh | Device for cooling sealing ring in cupola furnace - has seal in steel ring welded into base and surrounded on three sides by cooling canal |
| DE9215523U1 (en) * | 1992-11-14 | 1993-01-07 | Loi Essen Industrieofenanlagen GmbH, 4300 Essen | Industrial furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| DE9215523U1 (en) | 1993-01-07 |
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