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EP2886986A1 - Four pour le chauffage de pièces métalliques - Google Patents

Four pour le chauffage de pièces métalliques Download PDF

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Publication number
EP2886986A1
EP2886986A1 EP14186163.3A EP14186163A EP2886986A1 EP 2886986 A1 EP2886986 A1 EP 2886986A1 EP 14186163 A EP14186163 A EP 14186163A EP 2886986 A1 EP2886986 A1 EP 2886986A1
Authority
EP
European Patent Office
Prior art keywords
furnace
burners
metal goods
chamber
space
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Withdrawn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
EP14186163.3A
Other languages
German (de)
English (en)
Inventor
Corrado Ballabene
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.)
Andritz Maerz GmbH
Original Assignee
Andritz Maerz 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 Andritz Maerz GmbH filed Critical Andritz Maerz GmbH
Publication of EP2886986A1 publication Critical patent/EP2886986A1/fr
Withdrawn legal-status Critical Current

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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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers
    • 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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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
    • F27B9/36—Arrangements of heating devices
    • 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
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners

Definitions

  • the invention relates to a furnace for heating metal goods.
  • Furnaces for heating metal goods are known in the form of heat and heat treatment furnaces for semi-finished metal products or for pipes made of steel or non-ferrous metals. In such furnaces, the respective metal goods are heated for subsequent hot working, quenching, or furnace heating.
  • Metal goods are hereby understood to mean semis or metal pipes.
  • Semi-finished metal products may in particular be billets, blocks or slabs.
  • ovens for heating metal goods are pushers and Hubbalkenöfen.
  • the metal goods lie in the furnace chamber on rails and are pushed through the furnace by means of a slotting machine.
  • the individual metal goods are firmly together, so that the impact machine pushes on the insertion of a new metal good at the same time the whole contents of the furnace.
  • the conveying system for conveying the metal goods through the furnace space comprises two types of pipes or beams.
  • One type of these pipes or beams which are also referred to as fixed systems (comprising horizontal and vertical pipes and / or beams), are immovable and serve to support the metal goods.
  • the second type of tubes or beams also referred to as hoisting systems (which in turn comprise horizontal and vertical tubes and / or beams), move up and down between the fixed systems, describing a path approximating a circle or a rectangle.
  • hoisting systems which in turn comprise horizontal and vertical tubes and / or beams
  • Appropriately designed ovens for heating metal goods usually have a furnace chamber with a substantially tunnel-like shape, ie with an input side on one side and an output side on the opposite side of the furnace chamber.
  • metal goods the so-called "upper furnace”
  • the furnace chamber For firing the furnace chamber above the transport plane to be transported through the furnace chamber metal goods (the so-called "upper furnace") on the ceiling of the furnace ceiling burner and / or arranged on the side walls of the furnace side burner.
  • Below the transport level of the by the Furnace space to transported metal goods (the so-called "sub-furnace”) are arranged on the side walls of the furnace side burner.
  • Furnaces for heating metal goods are usually divided into at least three zones, namely an entrance zone (which is also referred to in the art as a “convective zone”), a heating zone and a balancing zone.
  • the entrance zone immediately adjoins the furnace inlet and serves to preheat metal goods introduced into the furnace chamber.
  • the entrance zone is not heated by burners, but by hot furnace exhaust gases extracted from the equalization and heating zone.
  • the heating zone adjoins the input zone in the transport direction of the metal goods transported through the furnace chamber. In this takes place the essential heating or heat treatment of the metal goods in the furnace chamber.
  • the heating zone is fired in the upper furnace with side or ceiling burners and in the lower furnace with side burners. Since a firing of the furnace in the heating zone of the furnace chamber via side burner is usually easier and less expensive than firing on ceiling burner, is heated in the heating zone as possible on side burner. However, this is only possible up to a maximum width of the oven, as from a certain Furnace width a sufficiently uniform temperature distribution over the entire width of the furnace with side burners can no longer be achieved.
  • ceiling burner starting at a certain width of the furnace furnace of the heating zone is fired by ceiling burner, as with ceiling burners a uniform temperature distribution over the entire width of the furnace can be achieved. In the lower furnace, however, a uniform temperature distribution can not be produced by the ceiling burners.
  • the compensation zone which extends to the furnace outlet.
  • the upper furnace is usually fired via ceiling, side or front burners and the lower furnace via side or front burners.
  • the invention has for its object to provide a furnace for heating metal goods available by the improved firing of the heating zone of the furnace is possible.
  • the basic idea of the invention is to fire the furnace chamber of the furnace by means of further burners arranged in the region of the furnace bottom (referred to herein as "further burners"). Since the other burners are arranged in the region of the furnace bottom, the lower furnace of the furnace according to the invention can be fired by the further burners.
  • the further burners can rather be arranged over the entire width of the oven in the region of the furnace bottom in the heating zone of the furnace
  • the lower furnace in the region of the heating zone of the furnace according to the invention can be ignited by the further burners provided according to the invention over the entire width of the furnace.
  • the furnace according to the invention preferably has an input zone, a heating zone and a compensation zone. These zones can each be formed, as known from the prior art and as described above, wherein the lower furnace - in contrast to the prior art - in a furnace according to the invention is additionally fueled by the other burner.
  • the further burners are preferably arranged in the region of the heating zone of the furnace according to the invention. According to one embodiment, it is provided that the further burners are arranged exclusively in the region of the heating zone of the furnace.
  • the burners are preferably not oriented upwards, ie in the direction of the material to be heated in the oven, but preferably in at least one of the following directions: in the direction of the outlet side or in the direction of the inlet side of the oven. This makes it possible to achieve a particularly uniform temperature distribution.
  • the uniformity of the temperature distribution can be further increased by the fact that each aligned in one direction Further burners are each aligned parallel to each other, so that the flame produced by the other burner in one direction or burner gas jet parallel to each other.
  • the furnace operation in particular the exhaust gas routing and the transport of the goods through the furnace, is not adversely affected by the other burner.
  • the furnace bottom of a furnace according to the invention is designed in a special way to have the other burner.
  • the furnace bottom of a furnace according to the invention may be formed substantially in the form of a horizontal plane. This allows a particularly uniform flame and exhaust gas in the lower furnace.
  • the furnace according to the invention may in particular be one in the form of a pusher or walking beam furnace.
  • the furnace according to the invention may comprise the known from the prior art features of a pusher or Hubbalkenofens.
  • the furnace according to the invention is designed for heating metal goods, in particular metal goods of great length, for example in the form of semi-finished steel products, for example in the form of billets, blocks or slabs or for example in the form of metal pipes.
  • the furnace according to the invention and the furnace chamber can in principle have any size and dimension.
  • an oven according to the invention is an oven having a large width of the oven space, since the advantageous effect of the further burners, which allow a particularly uniform temperature distribution in the lower furnace, in particular in the area of the heating zone of the furnace, is particularly important for furnaces of large width comes.
  • the width of the furnace chamber of the furnace according to the invention can be for example more than 15 meters.
  • the furnace chamber of a furnace according to the invention may, for example, have a length of 13 meters and more, the length of the furnace being understood to be the shortest distance in the furnace space between the furnace inlet and the furnace outlet.
  • All burners of the furnace according to the invention can be designed according to the burner embodiments known from the prior art.
  • the burners may be high speed burners or pulse burners.
  • the face, ceiling and side burners of the furnace according to the invention may be arranged according to the prior art.
  • the furnace may have no burners in the region of its input zone.
  • the furnace may have either ceiling or side burners for firing the top furnace; If the furnace according to the invention has a large width, it can be provided that it has exclusively ceiling burner in the area of the heating zone for firing the upper furnace.
  • the stove can be used in the Area of the heating zone preferably exclusively have the other burner.
  • the furnace according to the invention may preferably have ceiling, side or end burners for firing the top furnace; Preferably, the furnace has only one of these three types of burners for firing the furnace in the area of the compensation zone.
  • the furnace may have side or front burners; As far as the furnace according to the invention has a large width, it can be provided that this has in the region of the equalization zone only forehead burner for firing the furnace.
  • the furnace may in particular be designed such that the furnace space, in particular in the region of the heating zone, can be heated to temperatures in the range from 500.degree. C. to 1300.degree.
  • the furnace space can be heated, for example, to temperatures in the range of 500 ° C to 1050 ° C; for heating other metal semi-finished products, for example in the form of billets, blocks or slabs, the furnace chamber, for example, be heated to temperatures in the range of 950 ° C to 1,300 ° C.
  • the furnace preferably operates countercurrently, with the metal goods being directed from the furnace inlet towards the kiln outlet and the exhaust gases generated in the balancing and heating zone being directed in the opposite direction of movement towards the kiln inlet and thence be removed from the oven room.
  • part of the heat energy contained in the exhaust gases is transferred to the furnace transferred imported metal goods and thereby achieved a preheating of imported into the furnace chamber metal goods.
  • the furnace according to the invention may comprise a device known from the prior art for transporting or guiding the metal goods through the furnace chamber.
  • the oven according to the invention is designed as a blast furnace, the oven can therefore a shock device and, as far as the furnace is designed as Hubbalkenofen, have a corresponding lifting device for transporting the metal goods through the furnace chamber.
  • the further burners of the furnace according to the invention can be arranged, for example, directly in the region of the furnace bottom, for example in the manner of the ceiling, side or face burners known from the prior art.
  • the further burners in at least one housing arranged in the region of the kiln floor.
  • the further burners can be arranged in this at least one housing in such a way that they are protected by the housing from the hot furnace atmosphere, but at the same time they can still be specifically aligned, in particular can be aligned specifically in the direction of the furnace inlet or furnace outlet.
  • These housings may for example be formed of a refractory ceramic material, for example of a high alumina refractory material.
  • each case one or a number of further burners in each case one Housing are arranged, for example, a plurality of these housings spaced from one another in the region of the furnace bottom can be arranged.
  • all further burners are arranged in a single housing.
  • the further burners can be arranged at arbitrary positions in the region of the furnace bottom.
  • the further burners may preferably be arranged over the entire width of the furnace bottom in the region of the furnace bottom, in particular over the entire width of the furnace bottom in the region of the heating zone of the furnace.
  • the further burners may, for example, be arranged essentially along a path which extends substantially parallel to the furnace outlet in the region of the furnace bottom.
  • the further burners may be arranged uniformly spaced along such a distance in the region of the furnace bottom, for example from one side wall to the other side wall, preferably over the entire width of the furnace bottom.
  • the housing or the housing for example, also extend along such a distance, for example, from one to the other side wall.
  • the metal goods can be transported in the region of a plane through the furnace chamber.
  • This transport plane may be defined by support means on which the goods rest during transport through the furnace.
  • these support means may be, for example, rails or similar means on which the goods rest, while being pushed through the furnace room by the impact machine.
  • these rails can be water-cooled and protected from the furnace atmosphere by refractory ceramic masses.
  • non-cooled rails made of heat-resistant steel can be used.
  • the transport plane, along which the metal goods are transported through the oven chamber for example, be defined by the plane in which the metal goods are when they rest on the fixed systems.
  • the fixed systems and lifting systems of the walking beam furnace can also be designed as known from the prior art, in turn, for example, as water-cooled pipes or rails, which may be protected from the furnace atmosphere by a refractory ceramic mass.
  • non-cooled stationary and lifting systems made of heat-resistant steel can be used.
  • the distance between the top of the housing and the bottom of the plane is at least 40% of the height of the lower furnace chamber, the exhaust gas routing and the transport of the metal goods through the furnace chamber are practically not affected.
  • the located between the top of at least one housing and the bottom of the plane distance is at least 50%, 60%, 70%, 80% or at least 90% height of the lower furnace chamber.
  • the upper furnace chamber is also referred to as “upper furnace” and the lower furnace chamber as “lower furnace”.
  • the height of the lower furnace space or the height of the lower furnace is understood here to mean the average distance between the transport plane of the semi-finished products and the furnace bottom.
  • the distance between the upper side of the at least one housing and the underside of the transport plane may be for example at least 0.5 meters, 0.7 meters, 0.9 meters, 1.0 meters, 1.1 meters or 1.2 meters. Further, the distance between the top of the at least one housing and the bottom of the transport plane may be at most 2.0 meters, 1.8 meters, 1.6 meters, 1.5 meters or 1.4 meters.
  • the height of the lower furnace may be, for example, in the range of 0.8 to 2.7 meters.
  • the furnace operation is virtually unaffected by the housing (s) at a corresponding distance between the upper side of the at least one housing and the underside of the transport plane.
  • the free cross-section of the furnace which is needed to pass the hot exhaust gases generated in the equalization zone and the heating zone to the entry zone, is not significantly narrowed.
  • An advantage of a correspondingly large distance between the at least one housing and the transport plane is also that any scale collecting on the housings can not come into contact with the metal goods or the lifting systems transported through the furnace chamber.
  • the furnace has a completely or substantially arranged below the furnace bottom operating channel, from which the other burner can be operated.
  • the control channel may in particular be designed such that it can be walked on by personnel.
  • the further burners or the housing (s) in which the further burners are arranged are accessible on the head side from the operating channel in order to be able to operate or service the burners.
  • the furnace according to the invention comprises exhaust gas supply means through which exhaust gases, ie combustion gases of the burners of the furnace, can be supplied to the further burners.
  • exhaust gas supply means have the particular advantage that the exhaust gases supplied to the further burner through the exhaust gas supply means can be post-combusted by the further burners, whereby a reduction of nitrogen oxides in the exhaust gas can be achieved.
  • the exhaust gas supply means may consist solely of an inlet or an opening through which exhaust gases can be conducted through the housing (s) to the further burners.
  • the exhaust gas supply means may comprise exhaust pipes through which exhaust gas can be conducted to the further burners. If the other burners are arranged in at least one housing, it can be provided that such exhaust gas supply means are arranged in the form of the aforementioned openings or exhaust gas inlets of the aforementioned exhaust pipes on the side facing away from the burner output of the other burner side of the housing. In this way, exhaust gas from the furnace chamber in the area between the other burners and the furnace inlet through the exhaust gas supply means can be discharged and the other burners to be passed, so that these exhaust gases are nachverbrennbar by the other burner.
  • additional burners can in particular be arranged in such a way that the heating zone of the furnace can also be fired by them.
  • Such an embodiment is particularly suitable for ovens of such a large width, which, for example, is not combustible with the further burners according to the invention such that the heating zone has the desired temperature or desired uniform temperature distribution, in particular in the lower furnace.
  • the additional burners may be designed in accordance with the further burners, that is to say they may be arranged in particular in at least one housing, which may be designed in accordance with the at least one housing of the further burners.
  • the at least one housing of the additional burners can have the same distance from the transport plane that the at least one housing, in which the further burners are arranged, has from the transport plane.
  • the additional burners can be operated by an operating channel which can be designed in accordance with the operating channel designed to operate the further burners.
  • the additional burner may have exhaust gas supply means, which are formed in accordance with the exhaust gas supply means, by the exhaust gases to the other burners are to be conducted.
  • exhaust gas supply means can be supplied by the exhaust gas to the other burners is through the exhaust gas supply means, through the exhaust gas the Additional burners can be supplied, exhaust gas from the furnace chamber in the area between the additional burners and the other burners can be discharged and the additional burners zuleitbar.
  • an oven is shown in the form of a Hubbalkenofens, in FIG. 1 in its entirety is designated by the reference numeral 1.
  • the furnace 1 has a substantially tunnel-shaped furnace chamber 3 for receiving metal goods.
  • the furnace 1 On one - in FIG. 1
  • the furnace 1 On the right-hand side, the furnace 1 has an inlet side 5 with a furnace inlet 7, through which metal goods to be heated in the furnace chamber 3 can be introduced into the furnace chamber 3.
  • the furnace 1 On its opposite - in FIG. 1
  • the furnace 1 On its opposite - in FIG. 1
  • the furnace 1 On the left side, the furnace 1 has an outlet side 9 with a furnace outlet 11, through which metal goods heated in the furnace chamber 3 can be carried out from the furnace chamber 3.
  • Between the Input side 5 and the output side 9 of the furnace chamber 3 is bounded on the upper side by a ceiling 13 and the bottom by a furnace bottom 15.
  • the side of the furnace chamber 3 between the input side 5 and the output side 9 is bounded by two side walls which extend substantially parallel to the plane of the drawing and of which FIG. 1 only the side wall facing away from the plane of the drawing 16 is marked, while the side wall facing the plane of the drawing is not shown.
  • the furnace chamber 3 is divided into three zones, namely an adjoining the input side 5 input zone 3E, one in the transport direction of the metal goods 25 adjoining the heating zone 3H and it in the transport direction of the metal goods 25 adjoining compensation zone 3A, extending to the output side 9 extends.
  • the transport system for conveying metal goods 25 through the furnace chamber 3 comprises on the one hand a fixed system of vertical beams and horizontal support tubes 23 on which metal goods 25 conveyed through the furnace chamber 3 can be placed. Furthermore, the transport system comprises a lifting system 27, by means of which the metal goods 25, as known from the prior art, can be lifted off the fixed system 23, can be conveyed one piece in the direction of the exit side 9 and can then be deposited again onto the fixed system 23.
  • the fixed system 23 defines a plane E, along which the metal goods 25 can be guided through the furnace chamber 3.
  • the transport level 3 divides the furnace space 3 into an upper furnace 3o and a lower furnace 3u.
  • the furnace 1 For firing the upper furnace 3o in the region of the heating zone 3H, the furnace 1 has ceiling burner 19, which are arranged on the ceiling 13 in the region of the heating zone 3H.
  • the furnace 1 for firing the upper furnace 3o in the region of the heating zone 3H could alternatively also have side burners 21 which would be arranged in the region of the side walls and of which FIG. 1 only the side burner 21 which can be arranged in the region of the illustrated side wall 16 are shown in dashed lines.
  • the furnace 1 For firing the upper furnace 3o in the area of the compensation zone 3A, the furnace 1 has front burners 17 arranged in the upper area of the exit side 9.
  • the furnace 1 For firing the lower furnace 3u in the area of the compensation zone 3A, the furnace 1 has front burners 10 arranged in the lower area of the exit side 9.
  • further burners 29 are arranged in the region of the furnace bottom 15. These further burners 29 are aligned with the output side 9, so that flames extending parallel to the output side 9 can be formed through the burners 29.
  • the further burners 29 are arranged along a path which runs in the region of the furnace bottom 15 parallel to the exit side 9 and perpendicular to the plane of the drawing, so that of the further burners 29 in FIG FIG. 1 only a single burner is recognizable.
  • the furnace bottom 15 forms on its side facing the furnace chamber 3 from a horizontal plane, the horizontal course is not affected by the other burner 29.
  • the further burners 29 are arranged in a housing 30 of a high alumina, refractory material and thereby effectively protected from the hot furnace atmosphere.
  • exhaust gas supply means 31 are formed in the form of openings which are arranged on the burner output of the burner 29 opposite side of the housing 30. Exhaust gas from the region of the lower furnace chamber 3u between the further burners 29 and the input side 5 of the furnace 3 can thus be discharged through the openings 31 and can be supplied to the further burners 29, so that this exhaust gas can be post-combusted by the further burners 29.
  • the height H of the lower furnace space 3u, so the distance between the transport plane E and the furnace bottom 15, is about 2.5 meters.
  • the distance A between the top of the housing 30 and the transport plane E is about 1.3 meters and thus 52% of the height H of the lower furnace chamber 3u.
  • the distance A remaining between the underside of the transport plane E and the top of the housing 30 is thus high enough to produce exhaust gases without relevant flow resistance from the area of the compensation zone 3A and the heating zone 3H in the direction of the inlet side 5 and thus through the inlet zone 3E of the furnace 1 to be allowed to flow.
  • the furnace 1 also has a walk-in control channel 33, from which the other burner 29 can be operated.
  • the control channel 33 is disposed substantially below the furnace bottom 15 and has only the head side access to the housing 30, so that the burner 29 from the control channel 33 are operated and maintained.
  • FIG. 2 shows a highly schematic perspective view of the furnace 1 according to the embodiment according to FIG. 1 in the area of the other burner 29.
  • the illustration is after FIG. 1 not to scale for illustration FIG. 1 ,
  • FIG. 2 In particular, it is easy to see the elongated course of the housing 30, which extends transversely to the longitudinal course of the furnace 1 over the furnace bottom 15.

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  • 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)
  • Tunnel Furnaces (AREA)
EP14186163.3A 2013-12-19 2014-09-24 Four pour le chauffage de pièces métalliques Withdrawn EP2886986A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013114526.4A DE102013114526A1 (de) 2013-12-19 2013-12-19 Ofen zum Erwärmen von Metallgütern

Publications (1)

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EP2886986A1 true EP2886986A1 (fr) 2015-06-24

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US (1) US20150176098A1 (fr)
EP (1) EP2886986A1 (fr)
DE (1) DE102013114526A1 (fr)

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DE102016110170B3 (de) * 2016-06-02 2017-11-23 Kopf Holding Gmbh Verzinkungsofen und Verfahren zum Betrieb eines Verzinkungsofens
CN113566565A (zh) * 2021-07-29 2021-10-29 湖北中冶窑炉有限公司 不锈钢圆钢穿孔前加热用步进底式加热炉

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DE1934093B2 (de) * 1969-07-04 1970-03-05 Ofu Ofenbau Union Gmbh Stossofen mit zusaetzlicher Unterflurfeuerung
US3749550A (en) * 1971-12-16 1973-07-31 Loftus Engineering Corp Walking beam furnace
US3820946A (en) * 1973-05-29 1974-06-28 Midland Ross Corp Longitudinally fired walking beam furnace
DE2556721A1 (de) * 1975-12-17 1977-07-07 Ofu Ofenbau Union Gmbh Hubbalkenofen
JPS5582720A (en) * 1978-12-19 1980-06-21 Ishikawajima Harima Heavy Ind Co Ltd Charging and extracting method for material in walking beam type heating furnace
DD152851A1 (de) * 1980-08-27 1981-12-09 Wolfgang Bartz Hubbalkenofen mit oberheizung zur erwaermung langer knueppel
US4453915A (en) * 1982-08-25 1984-06-12 Bloom Engineering Company, Inc. Method and apparatus for underfiring oil country tube reheat furnaces
KR20090016221A (ko) * 2007-08-10 2009-02-13 주식회사 포스코 푸셔식 가열로 구조

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