EP2398603A1 - Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage - Google Patents

Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage

Info

Publication number
EP2398603A1
EP2398603A1 EP10712484A EP10712484A EP2398603A1 EP 2398603 A1 EP2398603 A1 EP 2398603A1 EP 10712484 A EP10712484 A EP 10712484A EP 10712484 A EP10712484 A EP 10712484A EP 2398603 A1 EP2398603 A1 EP 2398603A1
Authority
EP
European Patent Office
Prior art keywords
objects
preheating device
preheating
heating
housing
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Withdrawn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
EP10712484A
Other languages
German (de)
English (en)
Inventor
Uwe GÜNTER
Jaochim Sokoll
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.)
extrutec GmbH
Original Assignee
extrutec GmbH
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 extrutec GmbH filed Critical extrutec GmbH
Publication of EP2398603A1 publication Critical patent/EP2398603A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C29/00—Cooling or heating extruded work or parts of the extrusion press
    • 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
    • C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
    • 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
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/39—Arrangements of devices for discharging
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/10—Arrangements for using waste heat
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/10—Arrangements for using waste heat
    • F27D17/18—Arrangements for using waste heat for preheating solid materials

Definitions

  • Preheating device for objects in particular aluminum strands, bars, or bolts and a system with such a preheating device
  • the invention relates to a preheating device for objects, in particular aluminum strands, bars, or bolts, consisting of a housing for receiving the objects and a heating device for heating the articles.
  • the invention further relates to a system for processing objects, in particular aluminum strands, bars, or bolts, consisting of a preheating system for heating the objects, a downstream of the preheater for heating the objects and a furnace downstream processing unit and at least one Unit for transporting the object to the preheater to the oven or processing unit
  • the gas-fired furnaces produce combustion gases that contain a certain amount of residual heat. This is discharged via an exhaust pipe, for example via a chimney, wherein the exhaust gas temperature has a temperature between 200 C ° and 500 C °.
  • Devices which allow heating of the objects and these are a preheater, for example via a conveyor belt, fed and pass through a heating zone.
  • the residence time may be different, so that depending on the process speed, the corresponding preheating temperatures can be achieved.
  • One of the major disadvantages of the previously known preheating device is that it can only be operated continuously. This means that the objects are transported via a feed device, in particular in the formation of a conveyor belt in the direction of a furnace and are heated during the continuous transport. Depending on the dimensions of the aluminum strands, bars, or bolts, only a few can be heated at once.
  • Object of the invention is that it can only be operated continuously. This means that the objects are transported via a feed device, in particular in the formation of a conveyor belt in the direction of a furnace and are heated during the continuous transport. Depending on the dimensions of the aluminum strands, bars, or bolts, only a few can be heated at once.
  • the object of the invention is to propose a preheating device which avoids at least one of the aforementioned disadvantages of the prior art.
  • a preheating device as a preheating magazine, which is connected either directly to the heating process or to another preheating process, around the aluminum strands, bars, or bolts located in a magazine or bearing from their starting temperature of approximately 4 ° C 20 C ° (corresponds to the
  • One of the essential advantages of the invention is to preheat a multiplicity of objects to a passable preheating temperature of up to 100 ° C. in a very simple manner, advantageously no additional energy being expended for the preheating, but the one used as the Exhaust gas from the furnaces is created, which are intended for the further heating process.
  • the preheating device consists of a housing, which is a magazine-like design in which a plurality of objects, preferably sequentially introduced or can be removed again after the preheating process.
  • a plurality of objects preferably sequentially introduced or can be removed again after the preheating process.
  • such objects are received, which are rod-like and which are storable parallel to its longitudinal extent.
  • the preheating device respectively has closure elements which are designed as inlet and outlet opening elements.
  • closure elements which are designed as inlet and outlet opening elements.
  • Another development which is advantageously designed, provides that the transport of objects within the preheating device, which are, for example, sequentially one behind the other, is regulated by gravity. This is achieved in that the housing of the preheating device is mounted such that it is formed sloping from the inlet to the outlet opening element. This means that when an object is removed from the outlet opening element, the individual objects roll one position further so that a new object can be introduced into the inlet opening.
  • the inlet opening has elements which make it possible to place the article on the closure element, wherein upon closure of the closure element, the article passes into the interior of the housing.
  • the preheating device itself has at least one supply air duct, which is coupled to the exhaust gas outlet of the furnace, for example a chimney of a system.
  • This makes it possible to introduce the exhaust heat, which has a corresponding temperature, in the housing.
  • the exhaust gas temperature is used to bring already the object in a preheating phase to an acceptable temperature, so that the further energy to be invested is lower.
  • Figure 1 is a schematic representation of a first embodiment of a system for processing objects, in particular aluminum strands, - rods, - or bolts.
  • FIG. 2 is an enlarged view of the preheating system in the embodiment of a preheating magazine according to FIG. 1;
  • FIG. 2 is an enlarged view of the preheating system in the embodiment of a preheating magazine according to FIG. 1;
  • FIG. 3 is a schematic representation of a second embodiment of a system for processing objects, in particular aluminum strands, rods, or bolts;
  • FIG. 4 shows a schematic representation of a third exemplary embodiment of a system for processing objects, in particular aluminum strands, bars, or bolts;
  • FIG. 5 is a schematic enlarged view of the preheating device according to FIG. 4 in a perspective view
  • Fig. 6 is a schematically enlarged view of the preheating device according to Figure 4 partially in section.
  • FIG. 7 is a side view of the preheating device according to FIG. 6 Description of the embodiments
  • FIG. 1 shows a first exemplary embodiment of the preheating device 1 according to the invention, which is arranged directly in front of a furnace which is required for the heating of the articles.
  • the articles to be heated such as aluminum rods S shown in FIG. 1, are stored in transport and storage devices 4 and are supplied to the preheating device 1 according to the invention via a feed device, for example a gripper unit 6 in the form of a manipulator.
  • the exhaust heat emitted by the furnace 2 enters a supply air duct 3 shown schematically in the drawings and introduces the exhaust gas heat into the interior of the housing of the preheater 1. Due to the physical conditions that heat rises, the heat enters the upper region of the preheater 1 and thus flows through all stored in the preheater 1 aluminum rods S.
  • the preheating device 1 consists essentially of a housing 5, which is thermally insulated, so that the supplied heat, which passes through the supply air duct 3 into the interior of the housing, can be used as completely as possible within the preheating device 1.
  • the preheating device 1 is designed such that within it at least one object, which is mounted transversely to its longitudinal axis, is flown by a nozzle 12. Other objects are directly next to each other or one above the other and are also acted upon by the heat.
  • the gripping unit 6 now takes from the transport and storage device 4, an aluminum rod S and leads them to the preheater 1, as shown in Figure 2, to.
  • the preheating device 1 comprises in the region of the housing 5 a corresponding closure element, in this case an inlet opening element 7 which in this exemplary embodiment is constructed like a slide (alternatively pivotable) and only opens when an aluminum bar S is fed with the gripper unit 6.
  • the object rolls into the housing 5. Subsequently, the inlet opening member 7 is closed and the supply of the corresponding hot air through the supply air duct 3 takes place directly in the region of the nozzle 1 2 in the housing 5, so that the heat has the possibility within this housing 5 transversely to the aluminum tangles S at the top and To flow bottom and so to heat all aluminum rods S evenly.
  • At least one push cylinder is provided.
  • the outlet opening element 9 opens and the preheated aluminum bar S is transferred to the feed device 11.
  • a holding element 10 which, like a latching element, holds the corresponding aluminum bars S within the housing 5.
  • the feed to the oven is also encapsulated.
  • a capsule element is provided, which completely heat-insulated the way over the Zuzhourollengang 1 1. As a result, a cooling of the already preheated aluminum rod S is avoided.
  • the preheating device 1 consists of a housing 5 in which several objects are arranged sequentially parallel to the respective longitudinal extent of the objects.
  • the housing of the preheating device 1 of the housing 5 has, in addition to the space for receiving the objects S, closure elements in the form of an inlet opening element 7 and an outlet opening element 9.
  • the inlet opening element 7 and thus the inlet opening is arranged higher than the outlet opening element 9 or the outlet opening, so that a slope arises in which the objects S move independently in the direction of arrow P in the direction of the outlet opening P.
  • a gripper unit 6 transports the object S from a magazine 4 into the region of the inlet opening element 7 of the preheating device 1.
  • the inlet opening element 7 is designed in such a way that it is unfolded like a cover for receiving and comprises a receiving element 13.
  • the receiving element 1 3 is formed in cross-section L-shaped and has in addition to a receiving leg 13 a another holding leg 1 3 b, which prevents that when placing the article S on the unfolded outlet opening 7 of the object S inadvertently leaves them.
  • the inlet opening element 7 folds in the direction of the arrow P 2 and thereby closes the housing 5 of the preheating device 1.
  • the object S now lies inside the housing 5 of the preheating device 1.
  • the outlet opening element 9 is opened in the direction of the arrow P 3.
  • a carrier element 14 is provided within the Auslassö Stammselement 9, which consists of a Mit Cyprushaken 14a and a driving support member 14b.
  • the entrainment element 14 is preferably arranged over the entire longitudinal extension of the outlet opening on the inside of the cover designed like a cover. Alternatively, it may also be formed only in places.
  • the object S lying closest to the outlet opening element 9 is carried along by the driving hook 14a and the object S settles on the thigh-like formation of the entrainment support element 14b. From there, this object can be transferred to the feeder 11 by means of the gripping unit 6.
  • a holding element 10 is provided, which is preferably pneumatically, hydraulically or electrically operable. This prevents the respective objects from rolling further in the direction of the outlet opening. Only when the element closest to the outlet opening element 9 has been removed does the holding element 10 open and allow another article S to pass.
  • FIGS. 4 to 7 show a third exemplary embodiment of the preheating device according to the invention.
  • the preheating device 1 is integrated according to FIG. 4 in a plant A, wherein the plant A consists essentially of the storage device 4 for the objects and a furnace 2 and a gripper unit 6.
  • a feeder 11 is provided which feeds the heated articles S to the furnace.
  • the preheating device 1 consists of a housing 5 in which several objects are arranged sequentially parallel to the respective longitudinal extent of the objects.
  • the housing 5 of the preheating device 1 has, in addition to the space for receiving the objects S, closure elements in the form of an inlet opening element 7 and an outlet opening element 9.
  • the inlet opening of the inlet opening element 7 is arranged higher than the outlet opening of the outlet opening element 9, so that a slope arises in which the objects S move independently in the direction of the arrow P in the direction of the outlet opening P.
  • a gripper unit 6 transports the object S from a magazine 4 into the area of the outlet opening 7 of the preheating device 1.
  • the inlet opening 7 is configured in such a way that it is unfolded like a lid for receiving and comprises a receiving element 13.
  • the receiving element 1 3 is formed in cross-section L-shaped and has in addition to a receiving leg 13 a another holding leg 13 b, which prevents that when placing the article S on the unfolded inlet opening 7 of the article S inadvertently leaves them.
  • the inlet opening 7 folds in the direction of arrow P 2 and thus closes the housing 5 of the preheating device 1.
  • the object S now lies inside the housing 5 of the preheating device 1.
  • the outlet opening element 9 is opened in the direction of the arrow P 3.
  • a carrier element 14 is provided within the Auslassö Stammselement 9, which consists of a driving hook 14a and from a Mitttleauf position element 14b.
  • the entrainment element 14 is preferably arranged over the entire longitudinal extent of the outlet opening element 9 on the inside of the cover designed like a cover. Alternatively, it may also be formed only in places.
  • the object S lying closest to the outlet opening element 9 is entrained by the driving hook 14a and the object S settles on the thigh-like formation of the entrainment support element 14b. From there, this object can be transferred to the feeder 11 by means of the gripping unit 6.
  • a holding element 10 is provided, which is preferably pneumatically, hydraulically or electrically operable. This prevents the respective objects from rolling further in the direction of the outlet opening element 9. Only if that the the the holding element 10 is preferably pneumatically, hydraulically or electrically operable.
  • Outlet opening element 9 nearest element has been removed, the holding element opens and can pass another object.
  • All embodiments have the common feature that the preheating of the objects S is operated by the exhaust heat generated by the furnace for the actual heating process.
  • the preheating device 1 in the immediate vicinity of the furnace 2.
  • the exhaust gases have very short paths and can be introduced into the supply air duct 3 of the preheater 1 without great losses.
  • the preheating device 1 presented herein consists of a housing 5, which is suitable for receiving a plurality of objects.
  • the objects shown here are rod-like and arranged parallel to their longitudinal extent next to each other.
  • the invention results in a significant advantage, which is preceded in a very simple manner another preheating the actual heating process of the materials to be heated, for heating itself predominantly - preferably exclusively - the exhaust gases of the furnace responsible for the heating of the material is to be used.
  • Preheating device for objects in particular aluminum strands, bars, or bolts and a system with such a preheating device

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)
  • Metal Rolling (AREA)

Abstract

L'invention concerne une installation pour l'usinage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, comprenant une installation de préchauffage destinée à réchauffer les objets, un four monté en aval du dispositif de préchauffage pour le chauffage des objets ainsi qu'une unité de transformation montée en aval du four et au moins une unité pour le transport vers l'installation de préchauffage, le dispositif de préchauffage vers respectivement le four. L'installation A comprend un dispositif de préchauffage (1) prenant la forme d'un magasin ayant la propriété de permettre de stocker plusieurs objets (S) et d'ajouter ou de prélever au moins un objet (S). Le dispositif de préchauffage (1) est alimenté ou chauffé par les gaz d'échappement du four (2). L'invention concerne en outre un dispositif de préchauffage.
EP10712484A 2009-02-23 2010-02-23 Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage Withdrawn EP2398603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009003527 2009-02-23
PCT/IB2010/000357 WO2010095032A1 (fr) 2009-02-23 2010-02-23 Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage

Publications (1)

Publication Number Publication Date
EP2398603A1 true EP2398603A1 (fr) 2011-12-28

Family

ID=42236827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10712484A Withdrawn EP2398603A1 (fr) 2009-02-23 2010-02-23 Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage

Country Status (4)

Country Link
US (1) US20120024284A1 (fr)
EP (1) EP2398603A1 (fr)
CN (1) CN102325609A (fr)
WO (1) WO2010095032A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9563716B2 (en) * 2012-10-30 2017-02-07 Cerner Innovation, Inc. Zero footprint application virtualization
PL3857147T3 (pl) * 2018-09-25 2023-08-07 Extrutec Gmbh Urządzenie do wstępnego podgrzewania elementów w postaci prętów
CN111922110B (zh) * 2020-08-27 2022-01-04 嘉兴市利富通新材料科技有限公司 一种生产复杂黄铜的感应加热装置
EP4317479B1 (fr) * 2022-08-04 2025-03-26 IAS GmbH Dispositif et procédé de préchauffage des pièces métalliques en forme de barre

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US576152A (en) * 1897-02-02 Furnace for heating metal rods
US1594589A (en) * 1925-01-02 1926-08-03 Thaddeus F Baily Continuous furnace
US1672863A (en) * 1927-04-30 1928-06-05 Surface Comb Company Semimuffle forge furnace
US2404650A (en) * 1943-08-11 1946-07-23 Ford Motor Co Processing kiln
BE793161A (fr) * 1971-12-22 1973-04-16 British Iron Steel Research Mesure de temperatures
US3953247A (en) * 1972-11-21 1976-04-27 Prolizenz Ag Method for heat treatment of material to be worked on, especially of aluminium or magnesium alloys
DE2706345A1 (de) * 1977-02-11 1978-08-17 Mannesmann Ag Ofenanordnung zum erwaermen von brammen
US4289944A (en) * 1977-12-19 1981-09-15 Reese Thurston F Apparatus for reheating, storing and conveying cast bars
US4776391A (en) * 1979-10-04 1988-10-11 Heat Exchanger Industries, Inc. Heat exchanger method and apparatus
DE3203433C2 (de) * 1982-02-02 1984-08-09 Friedrich Wilhelm Dipl.-Ing. 7761 Moos Elhaus Anwärmofen für langgestrecktes Gut
JPS6082244A (ja) * 1983-10-09 1985-05-10 Mazda Motor Corp 鍛造用素材の加熱装置
US4619717A (en) * 1984-04-23 1986-10-28 Park-Ohio Industries, Inc. Heating magnetic metal workpieces
DE3738755A1 (de) * 1987-10-29 1989-06-01 Didier Eng Verfahren und anlage zum waermen von brammen, bloecken, knueppeln, blechen, stahlbaendern und dergleichen waermgut
DE202008012597U1 (de) * 2008-09-22 2009-01-15 Extrutec Gmbh Vorrichtung zur Erwärmung stangenartiger Werkstücke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010095032A1 *

Also Published As

Publication number Publication date
US20120024284A1 (en) 2012-02-02
WO2010095032A1 (fr) 2010-08-26
CN102325609A (zh) 2012-01-18

Similar Documents

Publication Publication Date Title
EP2989220B1 (fr) Dispositif de trempe sous presse d'éléments structuraux
WO2015000584A2 (fr) Procede de frittage de pieces a fritter et installation correspondante
DE843084C (de) Vorrichtung zur Behandlung von Textilien
WO2010095032A1 (fr) Dispositif de préchauffage d'objets, en particulier de tubes, de barres ou de goujons en aluminium, ainsi qu'installation dotée d'un tel dispositif de préchauffage
DE2712279A1 (de) Einrichtung zur waermebehandlung von zu behandelndem gut, insbesondere aus aluminium- oder magnesiumlegierungen
EP0179050B1 (fr) Four pour le traitement thermique de barres d'un métal léger
DE60010467T2 (de) Glühofen
AT390322B (de) Vorrichtung zum durchwaermen von stahlteilen
DE102010029082A1 (de) Durchlaufofen zum Erwärmen von Werkstücken mit hoher Aufheizrate im Eingangsbereich
EP0660059B1 (fr) Dispositif pour sécher du matériau en vrac
DE102009053343B4 (de) Stoßofen, Ofenanlage und thermisches Behandlungsverfahren
EP3254041B1 (fr) Procédé de fonctionnement automatique d'une installation de séchage
DE3780792T2 (de) Erwaermen von gegenstaenden in einer erwaermungskammer.
EP0062697B1 (fr) Procédé et four à longerons mobiles pour le réchauffage de produits sidérurgiques
DE102015202162B4 (de) Verfahren zum automatisierten Betreiben einer Trocknungsanlage mit einem zumindest mit einem Luftvolumen gefüllten Trocknungsraum
EP0355361A2 (fr) Procédé de graphitage de bâtons de carbone en électrodes de graphite
DE2924667A1 (de) Verfahren zum brennen von keramischen koerpern, insbesondere fliesen und nach diesem verfahren hergestellte fliesen
DE69204102T2 (de) Hubbalkenofen mit zentraler Ladung zum Beheizen und Speichern von Warmgut.
EP1862734A1 (fr) Générateur de vapeur
DE688851C (de) Verfahren zum Betrieb von Durchlaufoefen grosser Laenge
DE102008050927B4 (de) Energetisch optimiertes Verfahren, bei dem Werkstücke erhitzt werden, sowie Werkstückförderer und Wärmeübertragungseinheit
DE2163858A1 (de) Verfahren und Vorrichtung zur Wärmebehandlung
DE903743C (de) Kontinuierlich arbeitender Ofen
DE3635476A1 (de) Verfahren und ofen zum schnellbrennen von keramikmaterialien wie fliesen und aehnliches
DE151583C (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110921

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20130314

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20130725