DE2656989A1 - Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails - Google Patents

Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails

Info

Publication number
DE2656989A1
DE2656989A1 DE19762656989 DE2656989A DE2656989A1 DE 2656989 A1 DE2656989 A1 DE 2656989A1 DE 19762656989 DE19762656989 DE 19762656989 DE 2656989 A DE2656989 A DE 2656989A DE 2656989 A1 DE2656989 A1 DE 2656989A1
Authority
DE
Germany
Prior art keywords
furnace
conveyor
kiln
skids
tunnel
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.)
Withdrawn
Application number
DE19762656989
Other languages
German (de)
Inventor
Helmut Baumann
Fritz Petzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ludwig Riedhammer GmbH and Co KG
Original Assignee
Ludwig Riedhammer GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ludwig Riedhammer GmbH and Co KG filed Critical Ludwig Riedhammer GmbH and Co KG
Priority to DE19762656989 priority Critical patent/DE2656989A1/en
Priority to NL7701895A priority patent/NL7701895A/en
Priority to JP2714177A priority patent/JPS5384010A/en
Publication of DE2656989A1 publication Critical patent/DE2656989A1/en
Withdrawn legal-status Critical Current

Links

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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/12—Travelling or movable supports or containers for the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/003—Apparatus, e.g. 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
    • F27B9/14—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
    • F27B9/26—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 on or in trucks, sleds, or containers
    • 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
    • F27D2003/0073—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities the charge floating on a liquid, e.g. water
    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D2003/124—Sleds; Transport supports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Tunnel Furnaces (AREA)

Abstract

Tunnel kiln for sintering ferrites in a protective gas atmos. has preheating-, high temp.-, and cooling- zones; and conveyor elements which glide through the furnace. Each conveyor element consists of a plate made of a material with high thermal insulation and located in a metal frame fitted with metal skids which glide on metal rails located longitudinally on the kiln base. The heating equipment is located only above the plates inside the tunnel. Each plate may contain a middle layer of material acting as a heat barrier to prevent heat travelling downwards through the plates. The speed of the conveyor elements travelling through the kiln can be substantially increased, increasing productivity, without the need to increase the length of the kiln.

Description

"Tunnelofen zum Sintern von Ferriten in Schutzgas- "Tunnel furnace for sintering ferrites in protective gas

atmosphäre mit Vorwärmzone, Hochtemperaturzone und Abkühlzone und mit gleitend durch den Tunnelofen bewegten Förderelementen" Zum Sintern von Ferriten in Schutzgasatmosphäre werden vor allem Plattendurchschuböfen verwendet. Ein solcher Ofen stellt einen Tunnelofen dar, der eine Vorwärmzone, eine Hochtemperaturzone und eine Abkühlzone aufweist. Am Ofeneinlauf und am Ofenauslauf ist je eine Schleuse vorhanden. Der Plattendurchschubofen ist im übrigen mit einer Einrichtung zur Einregulierung der Temperatur und zur Schaffung und Aufrechterhaltung einer geeigneten Gasatmosphäre im Inneren des Ofens ausgerüstet. Als Fördermittel dienen Platten aus keramischem Werkstoff. Diese Platten werden beim Betreiben des Ofens durch den Tunnelofen geschoben. Sie werden dabei von oben und von unten beheizt. Die Platten nehmen nur relativ geringe Wärmemengen auf. Außerdem halten sie den hohen Temperaturbeanspruchungen stand, die beila Sintern von Ferriten auftreten. Nicht zuletzt dieser Eigenschaft des Fördermittels wegen ist der Plattendurchschubofen äußerst günstig für den Schnellbrand. atmosphere with preheating zone, high temperature zone and cooling zone and with conveyor elements that slide through the tunnel furnace "For sintering ferrites In a protective gas atmosphere, push-through plate ovens are mainly used. Such a Furnace is a tunnel furnace that has a preheating zone, a high temperature zone and has a cooling zone. There is a sluice each at the furnace inlet and at the furnace outlet available. The plate furnace is also equipped with a device for adjustment the temperature and to create and maintain a suitable gas atmosphere equipped inside the furnace. Ceramic plates serve as a means of conveyance Material. These plates are pushed through the tunnel oven when the oven is in operation. They are heated from above and below. The plates only take relatively small amounts of heat. In addition, they withstand the high temperature loads that occur during sintering of ferrites. not last this one Because of the property of the conveying means, the pusher-type furnace is extremely cheap for rapid fire.

Um Plattendurchschuböfen mit hohem Durchsatz zu erhalten, wurde die Baulänge dieser Öfen immer größer ausgelegt. Der Verlängerung der Plattendurchschuböfen sind jedoch technische Grenzen gesetzt. Anderseits besteht das Bedürfnis zur Steigerung der Produktion weiterhin. Würde hierzu eine Erhöhung der Durchlaufgeschwindigkeit der Platten erwogen, so müßte festgestellt werden, daß sich ein solches Vorgehen bereits deswegen verbietet, weil die Platten dann möglicherweise Temperaturschocks unterworfen würden, denen sie nicht standzuhalten vermöchten.In order to obtain high throughput plate pusher ovens, the The overall length of these ovens is designed to be ever greater. The extension of the plate furnace however, there are technical limits. On the other hand, there is a need to increase production continues. To do this, an increase in the throughput speed would be required If the plates were considered, it would have to be established that such an approach could be used already forbidden because the plates then possibly temperature shocks would be subjected to which they would not be able to withstand.

Der Erfindung liegt die technische Aufgabe zugrunde, den Plattendurchschubofen zum Sintern von Ferriten in Schutzgasatmosphäre derart abzuwandeln, daß die Durchlaufgeschwindigkeit des Fördermittels beträchtlich gesteigert werden kann. Diese Aufgabe wird mittels eines Tdnnelofens mit Vorwärmzone, Hochtemperaturzone und Abkühlzone und Einrichtung zur Schaffung einer Schutzgasatmosphäre im Inneren des Ofens gemäß der Erfindung dadurch gelöst, daß jedes Förderelement als hochwärmeisolierende Förderplatte mit Tragrahmen und Gleitgliedern aus Metall ausgebildet ist und daß am Ofenboden in Längsrichtung verlaufende metallische Schienen zum Zusammenwirken mit den Gleitgliedern angebracht sind und daß die Heizeinrichtung nur oberhalb der Förderplatten vorgesehen ist.The invention is based on the technical problem of the push-through furnace for sintering ferrites in a protective gas atmosphere in such a way that the throughput speed the funding can be increased considerably. This task is carried out using of a drying furnace with preheating zone, high temperature zone and cooling zone and equipment to create a protective gas atmosphere inside the furnace according to the invention solved in that each conveyor element as a highly heat-insulating conveyor plate with Support frame and sliding members are made of metal and that on the furnace floor in Longitudinal metallic rails for interaction with the sliding members are attached and that the heating device is provided only above the conveyor plates is.

In vielen Fällen kann es günstig sein, wenn die Förderplatte eine ihre gesamte Fläche ausmachende Zwischenlage aufweist, welche als eine die Wärmeleitung unterbindende Wärmebarriere dient.In many cases it can be advantageous if the conveyor plate has a has its entire surface making up the intermediate layer, which acts as a heat conduction preventing thermal barrier serves.

Durch Anwendung der Erfindung kann die Produktivität tatsächlich wesentlich erhöht werden, ohne daß es notwendig wäre, extrem lang bauende Öfen zu errichten; diese können vielmehr relativ kurz gehalten werden.By using the invention, productivity can actually be substantial increased without it being necessary extremely long stoves to build; rather, these can be kept relatively short.

Die Erfindung ist nachstehend an Hand der Zeichnung erläutert.The invention is explained below with reference to the drawing.

Es zeigen: Fig. 1 einen Querschnitt durch einen Ofen mit Förderplatte, Fig. 2 eine abgewandelte Förderplatte, schaubildlich, Fig. 3 die Gesamtansicht eines Ofens, stark verkleinert.They show: FIG. 1 a cross section through a furnace with a conveyor plate, FIG. 2 is a diagrammatic view of a modified conveyor plate, and FIG. 3 is an overall view of a Furnace, greatly reduced in size.

Das Ofenmauerverk 1 bildet einen rundum geschlossenen Kanal 2, an dessen Einlaufseite eine Schleuse 15 und an dessen Auslaufseite eine Schleuse 18 angeordnet ist. Innerhalb des Mauerwerkes sind entlang der Ofenerstreckung gasdichte Metallbleche (Diffusionsschirm6) eingebaut. In den Ofenkanal 2 münchen an geeigneter Stelle Zuleitungen A, B zum Einführen von N2.The furnace wall 1 forms a completely closed channel 2 its inlet side has a lock 15 and on its outlet side a lock 18 is arranged. Inside the masonry are gas-tight along the length of the furnace Metal sheets (diffusion screen6) installed. In the furnace channel 2 Munich at a more suitable Place supply lines A, B for introducing N2.

Am Ofenboden 3 sind entlang des Ofens Schienen 4, 5 angebracht, auf welchen die Förderplatten 6 über Gleitkufen 7 und 8 aufliegen. Jede Förderplatte 6 besteht aus einem hochwärieisolierenden Werkstoff 9 und einen Tragrahmen 10 aus Metall. Auch die Schienen 4, 3 und die Gleitkufen 7, 8 bestehen aus Metall. Die Heizeinrichtung ist nur oberhalb der Förderplatten 6 vorgesehen. Sie ist auf der Zeichnung mit 11 bezeichnet. Durch die Wärneisolierung der Förderplatte 6 und die Anordnung der Heizung nur oberhalb der Förderplatten bedingt, bleibt der Raum 12 unterhalb der Förderplatten 6 auch in der Hochtemperaturzone 13, die ZUM Sintern der Ferrite relativ hoch erwärmt wird, hinreichend stuhl, um netallische Träger, also hier die Schienen 4, 3 einbauen zu können.Rails 4, 5 are attached to the furnace bottom 3 along the furnace which the conveyor plates 6 rest on skids 7 and 8. Every conveyor plate 6 consists of a highly heat-insulating material 9 and a support frame 10 Metal. The rails 4, 3 and the runners 7, 8 are also made of metal. the The heating device is only provided above the conveyor plates 6. She is on the Designated with 11. Due to the thermal insulation of the conveyor plate 6 and the Due to the arrangement of the heating only above the conveyor plates, room 12 remains underneath the conveyor plates 6 also in the high-temperature zone 13, the FOR sintering the ferrites are heated to a relatively high temperature, sufficient to produce metallic carriers, so to be able to install the rails 4, 3 here.

Wegen der hohen Wärmeisolierung der Förderplatten ist es nicht mehr - wie bei der Schubplatte aus keramischem Werkstoff - notwendig, die gesamte Förderplatte auf die Sintertemperatur zu bringen. Es genügt vielmehr, die Förderplatten einseitig von oben zu erwärmen.Because of the high thermal insulation of the conveyor plates, it is no longer - as with the thrust plate made of ceramic material - the entire conveyor plate is necessary to bring to the sintering temperature. Rather, it is sufficient to have the conveyor plates on one side to be heated from above.

Bei der Förderplatte nach Fig. 2 ist noch eine dünne Zwischenlage 14 vorhanden, welche die gesamte Fläche der Förderplatte einnimmt und aus einem Werkstoff besteht, der die Wärmeleitung unterbindet und als Wärmebarriere dient.In the case of the conveyor plate according to FIG. 2, there is still a thin intermediate layer 14 present, which occupies the entire area of the conveyor plate and consists of one Material that prevents heat conduction and serves as a thermal barrier.

Beim Betreiben des Ofens gelangen die Förderplatten 6 über die Schleuse 15 am Einlauf des Ofens zur Vorwärmzone 16 in den Ofenkanal und durchwandern diesen in Richtung des Pfeiles P. Sie gelangen dann in die Hochtemperaturzone 13 und schließlich in die Abkühlzone 17 und verlassen diese über die Schleuse 18. LeerseiteWhen the furnace is in operation, the conveyor plates 6 pass through the sluice 15 at the inlet of the furnace to the preheating zone 16 in the furnace channel and wander through it in the direction of arrow P. You then get into the high temperature zone 13 and finally into the cooling zone 17 and leave it via the lock 18. Blank page

Claims (2)

Anspriiche 1. Tunnelofen zum Sintern von Ferriten in Schutzgasatmosphäre mit Vorwärmzone, Hochtemperaturzone und Abkühlzone und mit gleitend durch den Tunnelofen bewegten Förderelementen, dadurch gekennzeichnet, daß jedes Förderelement als hochwärmeisolierende Förderplatte (6) mit Tragrahmen (10) und Gleitgliedern (7,8) aus Metall ausgebildet ist und daß am Ofenboden (3) in Längsrichtung des Ofens verlaufende metallische Schienen (4,5) zum Zusammenwirken mit den Gleitgliedern (7,8) angebracht sind und daß die Heizeinrichtung (11) nur oberhalb der Förderplatten (6) innerhalb des Ofenskanals (2) vorgesehen ist. Claims 1. Tunnel furnace for sintering ferrites in a protective gas atmosphere with preheating zone, high temperature zone and cooling zone and with sliding through the tunnel furnace moving conveyor elements, characterized in that each conveyor element is a highly heat-insulating Conveyor plate (6) with support frame (10) and sliding members (7, 8) made of metal is and that on the furnace bottom (3) extending in the longitudinal direction of the furnace metallic Rails (4,5) are attached for cooperation with the sliding members (7,8) and that the heating device (11) only above the conveyor plates (6) within the furnace channel (2) is provided. 2. Tunnelofen nach Anspruch 1, dadurch gekennzeichnet, daß die Förderplatte eine ihre gesamte Fläche ausmachende Zwischenlage (14) aufweist, welche als eine die Wärmeleitung unterbindende Wärmebarriere dient.2. Tunnel furnace according to claim 1, characterized in that the conveyor plate has an intermediate layer (14) making up its entire area, which as a the thermal barrier that prevents heat conduction is used.
DE19762656989 1976-12-16 1976-12-16 Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails Withdrawn DE2656989A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19762656989 DE2656989A1 (en) 1976-12-16 1976-12-16 Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails
NL7701895A NL7701895A (en) 1976-12-16 1977-02-22 TUNNELOVEN FOR SINTERING FERRITES IN A PROTECTIVE GAS ATMOSPHERE.
JP2714177A JPS5384010A (en) 1976-12-16 1977-03-14 Tunnel kilns having preheating * high temperature and cooling zones * used for sintering ferrite in protection gas atmosphere and equipped with conveying element slidably movable through kilns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762656989 DE2656989A1 (en) 1976-12-16 1976-12-16 Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails

Publications (1)

Publication Number Publication Date
DE2656989A1 true DE2656989A1 (en) 1978-06-22

Family

ID=5995684

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762656989 Withdrawn DE2656989A1 (en) 1976-12-16 1976-12-16 Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails

Country Status (3)

Country Link
JP (1) JPS5384010A (en)
DE (1) DE2656989A1 (en)
NL (1) NL7701895A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498308A1 (en) * 1981-01-16 1982-07-23 Gautschi Electro Fours Sa PUSH FOR PUSHING OVEN
EP0108047A1 (en) * 1982-10-01 1984-05-09 Ebner-Industrieofenbau Gesellschaft m.b.H. Pusher-type oven
EP0198121A1 (en) * 1985-04-18 1986-10-22 Buchtal Gesellschaft mit beschränkter Haftung Roller hearth furnace for burning a plate-shaped ceramic product
FR2794632A1 (en) * 1999-06-14 2000-12-15 Gerard Coudamy COOKING SUPPORT
CN109442997A (en) * 2018-10-15 2019-03-08 百艺工坊(北京)科技文化有限公司 Insulation electrical kiln

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110926203A (en) * 2019-12-16 2020-03-27 嘉善县天成强磁有限责任公司 Annular ferrite sintering system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498308A1 (en) * 1981-01-16 1982-07-23 Gautschi Electro Fours Sa PUSH FOR PUSHING OVEN
EP0108047A1 (en) * 1982-10-01 1984-05-09 Ebner-Industrieofenbau Gesellschaft m.b.H. Pusher-type oven
EP0198121A1 (en) * 1985-04-18 1986-10-22 Buchtal Gesellschaft mit beschränkter Haftung Roller hearth furnace for burning a plate-shaped ceramic product
FR2794632A1 (en) * 1999-06-14 2000-12-15 Gerard Coudamy COOKING SUPPORT
EP1061317A1 (en) * 1999-06-14 2000-12-20 Gérard Coudamy Support for firing
US6503080B1 (en) 1999-06-14 2003-01-07 Ceric Baking support
CN109442997A (en) * 2018-10-15 2019-03-08 百艺工坊(北京)科技文化有限公司 Insulation electrical kiln

Also Published As

Publication number Publication date
NL7701895A (en) 1978-06-20
JPS5384010A (en) 1978-07-25

Similar Documents

Publication Publication Date Title
DE2608228A1 (en) TUNNEL OVEN WITH COOLING AND FLOOR EFFECT DEVICE
DE60222446T2 (en) ROUND FLOOR WITH WALKING GAS BARRIER
DE2656989A1 (en) Tunnel kiln for sintering ferrite(s) - using conveyors consisting of heat insulating plates fitted with skids gliding along rails
DE2121741A1 (en) Wheeled batt - for rapid firing ceramic kilns esp tunnel kilns
DE2658489C2 (en) Furnace for sintering magnetic ceramic materials
DE2126329B2 (en) FUEL HEATED RAILWAY STOVE
DE2419093C3 (en) Continuous furnace for firing ceramic products
DE2735061C2 (en) Gas circulation device for a tunnel furnace
DE3226457C2 (en) Walking beam or pusher oven
EP0046994A1 (en) Roller hearth furnace
DE2726199C2 (en) Formation of a transport path for a tunnel kiln
DE2133762C3 (en) Tunnel furnace for the continuous firing or sintering of elongated ceramic moldings
DE2106075A1 (en) Continuous furnace for firing ceramic products
DE2029840A1 (en) Single chamber furnace with flue gas circulation
EP0054184A1 (en) Cooling-zone for a kiln, especially for a roller hearth furnace
DE1146624B (en) Method of bending glass sheets on frame forms
AT260979B (en) Device for accelerated cooling of a furnace, in particular a tower furnace
DE2126329C (en) Fuel-heated overhead conveyor furnace
DE3301434C2 (en) Furnace for heating slabs, billets or similar items to be heated
DE824463C (en) Cooling duct on tunnel ovens
DE2718596A1 (en) OVEN EQUIPPED WITH AN INSULATED MUFFLE
DE2101440A1 (en) Oven with gas pillows
DE1295760B (en) Firing trolley for tunnel ovens
DE102018122887A1 (en) Plant and method for sintering components
DE1508506A1 (en) Tunnel furnace

Legal Events

Date Code Title Description
8141 Disposal/no request for examination