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EP3282024B1 - Fours à charge pour produit incandescent et procédé de traitement de la chaleur - Google Patents

Fours à charge pour produit incandescent et procédé de traitement de la chaleur Download PDF

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Publication number
EP3282024B1
EP3282024B1 EP17185513.3A EP17185513A EP3282024B1 EP 3282024 B1 EP3282024 B1 EP 3282024B1 EP 17185513 A EP17185513 A EP 17185513A EP 3282024 B1 EP3282024 B1 EP 3282024B1
Authority
EP
European Patent Office
Prior art keywords
furnace
housing
fan
batch
heat transfer
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.)
Active
Application number
EP17185513.3A
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German (de)
English (en)
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EP3282024A1 (fr
Inventor
Rainer Ehmann
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.)
Gautschi Engineering GmbH
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Gautschi Engineering 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 Gautschi Engineering GmbH filed Critical Gautschi Engineering GmbH
Priority to PL17185513T priority Critical patent/PL3282024T3/pl
Publication of EP3282024A1 publication Critical patent/EP3282024A1/fr
Application granted granted Critical
Publication of EP3282024B1 publication Critical patent/EP3282024B1/fr
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    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/40—Direct resistance heating
    • 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
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • 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
    • 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
    • C21D9/68—Furnace coilers; Hot coilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated
    • 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
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/0016—Chamber type furnaces
    • 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
    • F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means
    • F27D2007/045—Fans

Definitions

  • the invention relates to a batch furnace for Glühgut.
  • a batch furnace with the features of the preamble of claim 1 is for example made DE 102 27 499 A1 known.
  • Batch furnaces have a closed furnace space in which a single batch is heat treated.
  • Examples of batch furnaces are single-coil ovens, which allow flexible and individual heat treatment of individual coils.
  • Another example of a batch furnace are so-called chamber furnaces, which are used for the heat treatment of coils, billets and ingots.
  • Such a chamber furnace is for example off DE 102 27 499 A1 known.
  • Known batch furnaces have flow line systems, for example, with nozzles, which guide and enter the heat transfer medium in the furnace chamber and act on the batch located in the furnace chamber with the heat transfer medium for convective heat transfer.
  • the batch should be heated as homogeneously as possible in order to avoid damage to the batch by local overheating and to achieve the most uniform possible material properties.
  • the single-coil furnace is similarly constructed and has a single chamber in which a single coil is heat treated. As with the chamber furnace, flow channels are provided with nozzles that direct the heat transfer medium to the coil. Below or in front of the one-coil furnace, a charging system is arranged. When loaded from below, the furnace is mounted in a steel framework that creates space for handling the coils below the furnace.
  • the known chamber furnaces and one-coil furnaces are elaborately constructed and relatively large, which leads to correspondingly large energy losses and correspondingly requires extensive thermal insulation measures.
  • the invention is based on the object to improve a batch furnace of the type mentioned in that in a simple manner, a higher efficiency of the heat treatment is achieved.
  • the invention is based on the idea of specifying a batch furnace, in particular a single-chamber furnace or a one-coil furnace, with a furnace housing.
  • the furnace housing has a closable feed opening, a furnace material receiving space, in particular a single receiving space, and means for convective heat transfer to the furnace good by a heat transfer medium.
  • In the oven housing at least one fan is arranged.
  • the batch furnace has at least one heating device for the heat transfer medium and / or at least one inlet for an externally heated heat transfer medium.
  • the heating device is arranged directly in front of the suction side or directly behind the pressure side of the fan or circumferentially in an annular gap between the fan and the furnace housing.
  • the position of the inlet for the externally heated heat transfer medium may be anywhere in the furnace are located, which allows access to the furnace interior, ie to the receiving space for the furnace material, so that the externally heated heat transfer medium can get into the receiving space.
  • the inlet for an externally heated heat transfer medium is arranged directly in front of the suction side or directly behind the pressure side of the fan or circumferentially in the annular gap between the fan and the furnace housing. The invention is not limited to this arrangement.
  • At least one heating device for the heat transfer medium is arranged directly in front of the suction side or directly behind the pressure side of the fan or circumferentially in the annular gap between the fan and the furnace housing.
  • at least one inlet for an externally heated heat transfer medium is located directly in front of the suction side or directly behind the pressure side of the fan or circumferentially in the annular gap between the fan and the furnace housing or at any point which allows access to the interior of the oven, i. to the recording room allows.
  • the receiving space for the furnace material is arranged on the pressure side of the fan. This means that the receiving space can be located directly behind the pressure side of the fan or farther away from the pressure side.
  • the gaseous medium On the suction side of the fan, the gaseous medium is sucked. On the pressure side of the fan, the gaseous medium exits the fan with increased pressure.
  • the invention has several advantages.
  • the present invention does not require any nozzles or nozzle system which is used in the prior art to apply the heat transfer medium to the furnace stock.
  • the omission of the flow channels and the nozzles shortens the flow paths and reduces the pressure losses.
  • the invention enables the reduction of the suction area of the fan above the furnace or coil.
  • the flushing losses when using a protective gas atmosphere are reduced due to the efficiently used furnace volume. Due to the compact design of the space required by the furnace and to be insulated outer surface of the furnace is reduced. This reduces heat losses without additional heat insulation measures.
  • Hot air, exhaust gas or inert gas are used as a heat transfer medium depending on the kiln good example.
  • Hot air, exhaust gas or inert gas are used.
  • the batch furnace according to the invention is particularly suitable for the heat treatment of Aluminiumglühgut, especially Aluminiumcoils.
  • the heat transfer medium can be heated in different ways.
  • the fan is assigned a heating device.
  • the heating device is arranged directly in front of the suction side of the fan or directly behind the pressure side of the fan or circumferentially in the annular gap between the furnace housing and the fan. It is also possible that a heating device, in particular first heating device, directly in front of the suction side of the fan and / or a heating device, in particular second heating device, directly behind the pressure side of the fan and / or a heating device, in particular third heating device, circumferentially in the annular gap between the Oven housing and the fan are arranged.
  • the heating device as well as the fan, is arranged in the furnace housing.
  • the heat transfer medium drawn in by the fan flows past the heating device and is heated thereby.
  • the heated heat transfer medium flows through the fan and exits the fan on the pressure side.
  • the heat transfer medium can pass through a further heating device, absorb heat and then flow into the receiving space.
  • the heated heat transfer medium directly from the fan in the Recording space are initiated where the heat transfer medium meets the furnace material.
  • the receiving space is located directly behind the pressure side of the fan.
  • the cool heat transfer medium flows through the fan and exits on the pressure side of this. Subsequently, the heat transfer medium passes through the heating device and absorbs heat.
  • the receiving space is arranged downstream of the heating device in the flow direction, so that the furnace material located in the receiving space is exposed to the heated heat transfer medium.
  • the heat transfer medium flows from the receiving space of the furnace through the annular gap back towards the suction side of the fan and heats up within the annular gap.
  • a further variant consists in that, instead of or in addition to the heating device, at least one inlet for an externally heated heat transfer medium, for example the exhaust air from another furnace system, is assigned to the fan.
  • the inlet in combination with a jet pipe can be arranged directly in front of the suction side or directly behind the pressure side or in the annular gap between the furnace housing and the fan. It is also possible that a plurality of inlets are provided in combination with a jet pipe, the directly in front of the suction side and directly behind the pressure side of the fan and in the annular gap between Furnace housing and fan in the furnace room or the receiving space open. It is also possible that the inlet can be made anywhere without the use of a jet pipe.
  • a heat transfer medium preferably hot air or hot inert gas, or when using a jet pipe and hot exhaust gases are supplied to the batch furnace that is externally, that is heated outside the furnace. It is possible to combine one or more inlets for the externally heated heat transfer medium with one or more heating means, for example to bring a preheated heat transfer medium in the oven through the heating means to the desired final temperature.
  • the fan arranged in the furnace housing means that, compared to the known nozzle systems, shorter flow paths and thus lower pressure losses in the furnace housing are realized.
  • the receiving space is free of nozzle channels. This has the advantage that the useful volume is increased.
  • the heating device has an electrical resistance heater and / or a heating line for a gaseous heating medium.
  • the heating cable can also be referred to as a jet pipe.
  • the resistance heater has the advantage of easy control.
  • the heating pipe has the advantage that exhaust gases from other furnaces can be used to heat the batch furnace. The exhaust gases do not get directly into the batch furnace, but are led through the heating pipe, which radiate the heat, so that the furnace atmosphere is not affected. Instead of exhaust gases other heating media can be used.
  • a plurality of fans in particular 2 fans, arranged in juxtaposition on both sides of the receiving space.
  • Each fan is associated with at least one heating device and / or at least one inlet for an externally heated heat transfer medium.
  • the heating device or the inlet for the externally heated Heat transfer medium and the respective associated fan form a unit that realizes the device for convective heat transfer.
  • This embodiment has the advantage that the furnace material is heated uniformly from two sides.
  • the embodiment is particularly suitable, but not only for heating coils, in particular aluminum coils.
  • the receiving space of the batch furnace is formed substantially hollow cylindrical.
  • the fans are arranged on the front sides of the receiving space.
  • the fan has a drive which is arranged outside of the furnace housing.
  • This has the advantage that the fan drive is exposed to no or a relatively low heat load, so that no special thermal insulation or heat dissipation measures must be provided for the drive.
  • the charging opening can be closed by a cover or by a plurality of cover elements.
  • the lid or the cover elements are pivotable about an axis of rotation extending in the housing longitudinal direction.
  • the fan is arranged in the stationary part of the furnace housing.
  • This embodiment is particularly suitable for cylindrical batch furnaces, the furnace housing is divided in the longitudinal direction one or more times and thus forms the lid or the cover elements.
  • the furnace material, in particular the coil can be charged from above by means of a crane with coil winder.
  • the charging opening can be closed by at least one end wall element of the furnace housing, which can be pivoted about an axis of rotation extending in the housing transverse direction.
  • the frontal Wall element is connected to the fan. This has the consequence that the fan is pivoted together with the front-side wall element when opening or closing the charging opening.
  • the batch oven is charged from the front or the rear by means of a C-hook or stacker.
  • a coil winder can also be used.
  • the feed opening can be closed by at least one end wall element of the furnace housing, which is axially displaceable in the housing longitudinal direction and connected to the fan.
  • the fan is moved together with the wall element axially to open or close the furnace.
  • the feeding takes place in this case by a C-hook.
  • a coil winder can be used.
  • the furnace housing is divided and has an axially separable housing part, which at least partially forms the receiving space in the furnace operation.
  • the separable housing part improves the handling and operation of the batch furnace.
  • the housing part can be exchangeable designed to adapt the length of the receiving space.
  • This housing parts of different lengths can be used, so that the length of the receiving space to the length of the furnace good, for example.
  • the length of the coils can be adjusted. This has the advantage that the furnace volume can be adapted to the length of the respective furnace to be treated, which means a high degree of flexibility for the customer. This maximizes the useful volume and reduces flushing losses of the furnace, which contributes to a further increase in efficiency.
  • the detachable housing part may comprise transport means for moving the housing part. This facilitates the loading of the furnace material or the removal of the furnace good, which can be easily moved together with the housing part by the transport. A combination of the exchangeable housing part with the means of transport is possible.
  • the separable housing part is formed in one piece or divided with a lid or pivotable wings.
  • the one-piece version is structurally simple. The split version allows good access to the kiln material when loading or unloading.
  • the housing part is hollow cylindrical.
  • the furnace material can be arranged in the receiving space of the batch furnace, in particular the single-chamber furnace or single-coil furnace.
  • the heat transfer medium heated in the furnace or outside the furnace can be blown through at least one, in particular by two fans, onto the furnace good, in particular directly onto the furnace good, for convective heat transfer.
  • the batch oven according to Fig. 1 is preferably but not exclusively used for the heat treatment of Aluminiumglühgut, such as aluminum coils.
  • Aluminiumglühgut such as aluminum coils.
  • the coil shown is the reference numeral 25.
  • the batch furnace is generally applicable for coils (material-independent) or other Glühgut.
  • the batch furnace is a single-coil furnace adapted for the heat treatment of individual coils.
  • the invention is also applicable to single chamber furnaces suitable for the heat treatment of billets, billets or coils.
  • the batch furnace has a furnace housing 10 with a thermal insulation.
  • the furnace housing may have a cylindrical shape. Other oven shapes are possible.
  • the oven housing 10 defines a receiving space 12 in which the kiln material or the annealed material is arranged during operation of the batch kiln. This is a single receiving space 12.
  • the receiving space 12 is in the batch oven according to Fig. 1 loaded with a coil, in particular an aluminum coil.
  • the receiving space 12 has a bearing device 26 for the annealed material, in particular the aluminum coil.
  • the bearing device may for example be a bearing block or a bearing rod and is connected to the bottom of the receiving space 12.
  • the coil could also be deposited on its lateral surface. Other bearings are possible.
  • the receiving space 12 forms an empty space in the unloaded state of the batch furnace.
  • the receiving space 12 is accessible through a closable feed opening 11, the example in different variants in the FIGS. 3 to 5 is shown and explained in more detail below.
  • the receiving space is in accordance with the batch oven Fig. 1 essentially hollow cylindrical and thus adapted approximately to the shape of the coil to be heated.
  • the furnace housing 10 has a device for convective heat transfer 13 to the Glühgut by a heat transfer medium.
  • the heat transfer medium may be, for example, hot air.
  • another heat transfer medium such as exhaust gases of another furnace or inert gas can be used.
  • the device for convective heat transfer 13 comprises a fan 14 and a fan 14 associated with the heating device 15 for the heat transfer medium.
  • the device for convective heat transfer 13 comprises two fans 14, to each of which a heating device 15 is assigned.
  • the invention is not restricted to a specific number of fans 14 or heating devices 15. It is also possible to generally provide more than one fan and more than one heater in the oven housing 10.
  • the arrangement of two fans 14 and two heating devices 15 is particularly advantageous for the heating of coils.
  • the heating device 15 is arranged directly in front of the suction side 16 of the fan 14. This applies to both fans 14 and the corresponding heating devices 15.
  • the receiving space 12 connects directly to the pressure side 17 of the fan 14. In other words, the receiving space 12 on both axial sides, that is limited in the longitudinal direction of the furnace housing 10 by the fans 14 and their pressure sides 17.
  • heating devices 15 arranged on the suction side 16 can be arranged on the pressure side 17 of the fan 14.
  • the heating means 15 arranged on the pressure side 17 delimit the receiving space 12 in the longitudinal direction of the oven housing 10.
  • the oven housing 10 may have one or more inlets for a heat transfer medium heated outside the oven housing (not shown).
  • the respective inlet (s) open on the suction side 16 or on the pressure side 17 of the fan 14 into the housing 10.
  • the inlets for the externally heated heat transfer medium can be combined with the heating device 15.
  • the furnace housing 10 except for the fans 14, the heating means 15, the bearing means 26 for the coil 25 and any measuring devices, for example.
  • the receiving space 12 is at least free of nozzle channels, since the convective heat transfer through the fans 14 and the Heating device 15 takes place.
  • an open furnace volume is created, which means low pressure losses, low flushing losses and little effort for the thermal insulation.
  • the heating device 15 overlaps at least partially, in particular completely, the effective area of the fan 14, but may also be placed in the annular gap between the oven housing and the fan.
  • the heating device 15 extends in relation to the fan 14 in the radial direction and along the fan circumference. In this case, the heating device 15 through openings (not shown), through which the heat transfer medium can flow.
  • the heating device 15 can be designed as a uniform heating element with a central power supply or as separate heating elements, each with its own energy supply.
  • the heating device 15 is designed as an electrical resistance heater.
  • the resistance heating has jet-shaped heating coils, which extend radially from the inside to the outside with respect to the fan 14.
  • the wings of the fan 14 ie the length of the heating coils corresponds approximately to the wing length.
  • the heat transfer medium can flow. It is also possible to let the resistance heating spiral from the axis of rotation of the fan in the direction of the oven housing or to place the heating coil circumferentially in the annular gap between the oven housing and fan.
  • the fan and heating units according to Fig. 1 are symmetrical.
  • the heating device 15 may have a heating line or a plurality of heating lines for a gaseous heating medium.
  • hot air and hot gases such as exhaust gases are used. It is also possible to combine the resistance heating and the heating lines, so that the batch oven has hybrid heating.
  • the heat transfer medium flows in operation past the heating device 15 and absorbs heat.
  • the heated heat transfer medium flows through the fan 14 and exits on the pressure side (see thick arrows). There, the annealing material in the receiving space 12 is acted upon by the heated heat transfer medium.
  • the fans 14 and the heating device are arranged in each case on the end faces 18, 19 of the hollow cylindrical receiving space 12. As a result, the useful volume of the receiving space 12 is maximized.
  • the fan 14 is an axial fan.
  • the fans 14 each have a drive 20, in particular an electric motor, which is arranged outside of the furnace housing 10.
  • the electric motor or generally the drive 20 is coupled in a conventional manner directly to the fan 14, connected by means of belt drive with the fan or in rare cases also connected via a gear to the fan.
  • the furnace housing 10 has generally at the end faces 18, 19 a substantially rotationally symmetrical recess 27 which extends into the furnace housing 10 and has a closed further end face.
  • the recess 27 has in the example according to Fig. 1 in concrete terms, an inwardly, ie towards the receiving space 12 out, tapered section, which merges into a cylindrical section.
  • the cylindrical portion is closed to the receiving space 12.
  • the recess 27 can have a different geometry, for example a continuous cylindrical or continuous conical geometry.
  • the recess 27 and the center axis M of the furnace housing 10 are arranged coaxially.
  • the mounting of the fan 14 is connected to the recess 27, in particular to the cylindrical portion.
  • the fan is arranged parallel to the further end face of the recess 27.
  • the heating device 15 is fastened to the wall of the recess 27 arranged in the furnace housing 10. This results in a coaxial arrangement of Heating device 15, the fan 14 and the drive shaft of the drive 20.
  • the recess 27 that the fan 14 is arranged as close as possible to the storage 26 for the annealing in the receiving space 12. Inside the recess 27 and thus outside of the furnace housing 10, the drive 20, specifically the drive train is arranged.
  • annular gap 21 is formed, which allows the circulation of the heat transfer medium in the receiving space 12 and generally in the furnace housing 10.
  • the circulation is characterized by the thick arrows on the pressure side 17 of the fan 14 and the thin arrows on the suction side 16.
  • the heat transfer medium is thus circulated in the receiving space 12 or generally in the furnace housing 10, wherein the heated heat transfer medium flows in the direction of the Glühguts 25 and the receiving space 12.
  • the cooled heat transfer medium flows through the annular gap 21 back to the suction side 16 of the fan 14 and is there heated by the heating device 15 to flow through the fan 14 back to the pressure side 17.
  • the furnace housing 10 is divided and has an exchangeable housing part 24, in particular center piece, which is characterized by a box.
  • Fig. 3 is shown how the housing part 24, in particular centerpiece or middle part, is separated from the two lateral wall elements 23 to replace this.
  • the batch furnace can therefore be adapted to different Glühgutmaschine, especially different coils of length. This has the advantage that the distance between the fans 14 and the coil 25 is constant even at different lengths.
  • the batch oven after the Fig. 2 . 3 also offers the possibility of opening or closing the feed opening 11 by axial displacement of the lateral wall elements 23, so that the receiving space 12 can be charged by a C-hook or stacker.
  • Fig. 4 In combination with Fig. 4 is also a coil winder used.
  • the feed opening 11 are opened or closed by a cover 22 which can be pivoted about an axis of rotation of the furnace housing 10 extending.
  • a cover 22 which can be pivoted about an axis of rotation of the furnace housing 10 extending.
  • the axis of rotation is arranged laterally from the vertical center plane.
  • the lid 22 has a parallel to the axis of rotation extending closure side, which is arranged on the other side of the vertical center plane.
  • the fan 14 with the heating device 15 is arranged in the stationary part of the furnace housing 10 and is not moved with the cover 22.
  • two pivotable blades may be provided for opening and closing the batch furnace.
  • the axes of rotation of the wings are each arranged laterally opposite each other from the vertical center plane.
  • the two Verschluspar of the wings so the wing sides, which are locked together in the closed position, are in the closed position in the vertical center plane of the batch furnace.
  • the wings are hinged to a bottom piece of the furnace housing. The wings together with the bottom piece, the lateral surface of the hollow cylindrical furnace housing.
  • Fig. 5 is to open or close the feed opening 11, the lateral wall element 23 about a transverse to the central axis M axis of rotation pivotally.
  • the fan 14 and the heating device 15 are fixedly connected to the lateral wall element and are moved when opening or closing the feed opening 11.
  • the example according to Fig. 6 relates to a variant of the batch furnace after Fig. 3 in which the wall elements 23 are movable, in particular movable, axially, ie along the longitudinal axis of the batch furnace.
  • the furnace housing is formed in three parts.
  • the two wall elements 23 and the housing part 24 form the furnace housing 21 in the closed position, ie during operation of the batch furnace.
  • the housing part 24 is formed as a bottom piece.
  • the jacket surface of the furnace housing 21 in the region of the housing part 24 is formed by the wall elements 23.
  • the wall elements 23 each have a housing extension 28, which is the lateral surface of the wall elements 23 in axial direction, ie extend in the longitudinal direction of the batch furnace. In the closed position, the housing extensions 28 overlap the housing part 24.
  • the formed as a bottom piece housing part 24 is movable.
  • the housing part 24 transport means 29, for example in the form of rollers (dolly). Other means of transport are possible.
  • the transport means 29 is designed so that a movement of the housing part 24 transversely to the longitudinal direction of the batch furnace is possible.
  • the furnace material is mounted on the housing part 24, as in Fig. 6 good to see. Specifically, the coil is on the trolley.
  • the batch oven according to Fig. 6 works as follows.
  • the two outer wall elements 23 are removed after the heat treatment in the axial direction of the housing part 24, as indicated by the arrows in the longitudinal direction of the furnace housing 21.
  • the coil is moved on the housing part 24 or the trolley from the oven and taken away.
  • the next coil to be treated which is in the waiting position on a further housing part 24 or dolly, is moved between the two wall elements 23.
  • the wall elements 23 for closing the batch furnace are moved axially in the direction of the housing part 24.
  • the two housing extensions 28 are connected to each other and the wall elements 23 to the housing part 24.
  • the heat treatment begins.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Details (AREA)

Claims (12)

  1. Four à charge pour des produits à recuire, notamment four à enceinte unique ou four à bobine unique, pourvu d'un corps de four (10), qui comporte une ouverture de chargement (11) refermable, un espace de réception (12) de produit à cuire et un système, destiné au transfert thermique (13) par convection sur le produit à cuire via un milieu de transfert thermique, le four à charge comportant :
    - au moins un ventilateur (14), qui est placé dans le corps de four (10),
    - au moins un système de chauffage (15) du milieu de transfert thermique et/ou au moins une entrée pour un milieu de transfert thermique chauffé en externe, le système de chauffage (15) étant placé directement à l'avant du côté aspiration (16) ou directement à l'arrière du côté pression (17) du ventilateur (14) ou sur la circonférence d'une fente annulaire (21) entre le ventilateur (14) et le corps de four (10), et
    - un espace de réception (12) du produit à cuire, qui est placé du côté pression (17) du ventilateur (14), caractérisé en ce que
    l'ouverture de chargement (11) est refermable par au moins un élément de paroi (23) frontal du corps de four (10), qui est déplaçable en direction axiale dans la direction longitudinale du corps et qui est relié avec le ventilateur (14).
  2. Four à charge selon la revendication 1
    caractérisé en ce que
    l'espace de réception (12) est exempt de canaux de buse.
  3. Four à charge selon la revendication 1 ou 2,
    caractérisé en ce que
    le système de chauffage (15) comporte un chauffage par résistance électrique et/ou un conduit de chauffage pour un agent chauffant gazeux.
  4. Four à charge selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    plusieurs ventilateurs (14), notamment deux ventilateurs (14) sont placés en juxtaposition sur les deux côtés de l'espace de réception (12), à chaque ventilateur (14) étant affecté(e) au moins un système de chauffage (15) et/ou au moins une entrée pour un milieu de transfert thermique chauffé en externe.
  5. Four à charge selon l'une quelconque des revendications précédentes, caractérisé en ce que
    l'espace de réception (12) est conçu de forme sensiblement en cylindre creux, les ventilateurs (14) étant placés sur les faces frontales (18, 19) de l'espace de réception (12).
  6. Four à charge selon l'une quelconque des revendications précédentes, caractérisé en ce que
    le ventilateur (14) comporte un entraînement (20), qui est placé à l'extérieur du corps de four (10).
  7. Four à charge selon l'une quelconque des revendications précédentes, caractérisé en ce
    qu'une fente annulaire (21) est conçue entre le ventilateur (14) et le corps de four (10), pour la circulation du milieu de transfert thermique.
  8. Four à charge selon l'une quelconque des revendications précédentes, caractérisé en ce que l'ouverture de chargement (11) est refermable par au moins un couvercle (22) ou par plusieurs éléments formant couvercle, qui est/sont susceptible(s) de pivoter autour d'un axe de rotation s'écoulant dans la direction longitudinale du corps, et en ce que le ventilateur (14) est placé dans la partie stationnaire du corps de four (10).
  9. Four à charge selon l'une quelconque des revendications 1 à 7, caractérisé en ce que
    l'ouverture de chargement (11) est refermable par au moins un élément de paroi (23) frontal du corps de four (10), qui est susceptible de pivoter autour d'un axe de rotation s'écoulant dans la direction transversale du corps et qui est relié avec le ventilateur (14).
  10. Four à charge selon l'une quelconque des revendications précédentes, caractérisé en ce que
    le corps de four (10) est divisé et comporte une partie de corps (24) séparable en direction axiale, qui en mode four forme au moins partiellement l'espace de réception (12).
  11. Four à charge selon la revendication 10,
    caractérisé en ce que la partie de corps (24) est conçue en monobloc ou de manière séparée avec un couvercle ou avec des ailettes pivotantes.
  12. Four à charge selon la revendication 10 ou 11,
    caractérisé en ce que
    la partie de corps (24) est interchangeable et/ou comporte des moyens de transport, destinés à mouvoir la partie de corps (24).
EP17185513.3A 2016-08-10 2017-08-09 Fours à charge pour produit incandescent et procédé de traitement de la chaleur Active EP3282024B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17185513T PL3282024T3 (pl) 2016-08-10 2017-08-09 Piec wsadowy do materiału wyżarzanego i sposób obróbki cieplnej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016114841.5A DE102016114841A1 (de) 2016-08-10 2016-08-10 Chargenofen für Glühgut und Verfahren zur Wärmebehandlung

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EP3282024A1 EP3282024A1 (fr) 2018-02-14
EP3282024B1 true EP3282024B1 (fr) 2019-11-13

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US (1) US11066714B2 (fr)
EP (1) EP3282024B1 (fr)
CN (1) CN207227489U (fr)
DE (1) DE102016114841A1 (fr)
PL (1) PL3282024T3 (fr)

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TWI698533B (zh) * 2019-10-27 2020-07-11 協鋐機電有限公司 退火爐
CN111254275B (zh) * 2020-03-09 2021-10-01 胡超云 一种异型铜带退火用防护设备
DE102020106996A1 (de) 2020-03-13 2021-09-16 Bayerische Motoren Werke Aktiengesellschaft Chargenofen für presszuhärtende Platinen oder formzuhärtende Bauteile und Verfahren zur Wärmebehandlung von presszuhärtenden Platinen oder formzuhärtenden Bauteilen
US20230193441A1 (en) * 2020-04-03 2023-06-22 Novelis Inc. Hot uncoiling of metal
AT526000B1 (de) * 2022-03-15 2023-11-15 Ebner Ind Ofenbau Vorrichtung zur Temperierung eines Gegenstandes
CN114908244B (zh) * 2022-04-09 2023-12-15 江苏腾天工业炉有限公司 一种大型台式燃气低温退火炉

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Also Published As

Publication number Publication date
DE102016114841A1 (de) 2018-02-15
CN207227489U (zh) 2018-04-13
EP3282024A1 (fr) 2018-02-14
US11066714B2 (en) 2021-07-20
PL3282024T3 (pl) 2020-05-18
US20180044746A1 (en) 2018-02-15

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