EP3577241A1 - Dichtungsvorrichtung für einen durchlaufofen - Google Patents
Dichtungsvorrichtung für einen durchlaufofenInfo
- Publication number
- EP3577241A1 EP3577241A1 EP18706414.2A EP18706414A EP3577241A1 EP 3577241 A1 EP3577241 A1 EP 3577241A1 EP 18706414 A EP18706414 A EP 18706414A EP 3577241 A1 EP3577241 A1 EP 3577241A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- brush seal
- workpiece
- heat treatment
- section
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/565—Sealing arrangements
-
- 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
- C21D9/56—Continuous furnaces for strip 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
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/563—Rolls; Drums; Roll arrangements
-
- 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
- F27B9/24—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 being carried by a conveyor
-
- 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
- F27B9/24—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 being carried by a conveyor
- F27B9/2407—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 being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
Definitions
- the present invention relates to a heat treatment device for the thermal treatment of a workpiece, in particular a band-shaped workpiece. Moreover, the present invention relates to a method of operating the heat treatment device for thermal treatment of a workpiece.
- the atmosphere within the chamber is generated by ambient air or by specific process gases, which is advantageous for a heat treatment of workpieces, in particular of metal.
- the chamber due to a process gas atmosphere, the chamber must be sealed from hazardous process gases or due to chemical reactions within the furnace atmosphere between an adjacent chamber section or between the interior volume of the chamber and the environment. Exceeding an explosive concentration of eg hydrogen, carbon monoxide or oxygen can lead to serious accidents.
- the strip material is carried by rolling in the chamber.
- a heat treatment device for thermal treatment for thermal treatment (eg heating or cooling) of a workpiece, in particular a band-shaped workpiece.
- the heat treatment device consists of a housing in which a chamber (heating or cooling chamber) is located in the workpiece for the purpose of guide a thermal treatment and a first roller and a first brush seal can be arranged.
- the workpiece is carried by the first roller and is movable in a running direction.
- the first roller and the first brush seal are arranged to each other such that a first side of the workpiece comes into contact with the first roller element and a second side of the workpiece, the second side of which faces the first side, comes into contact with the first brush seal, such that at least a first section of the chamber is sealed by the first roller and the first brush seal against a second section of the chamber.
- Another object of the present invention is directed to a method of operating the above-described heat treatment apparatus for the thermal treatment of a workpiece, in particular a band-shaped workpiece.
- the workpiece is arranged in the chamber to allow a thermal treatment.
- the workpiece is moved along a running direction between the first section for performing a heat treatment and the second section for performing a thermal treatment.
- the heat treatment device according to the present invention may be an oven, eg a chamber furnace or a continuous furnace. In the chamber temperatures of about 100 ° C to 1200 ° C can be generated.
- the heat treatment device according to the present invention can be used as an annealing furnace or a high-temperature furnace.
- the heat treatment device can be used as a cooling device for workpieces that come from an upstream furnace plant.
- the heat treatment device can be used as a sealing device which is installed between the furnace and the environment.
- the chamber can thus represent an antechamber of another, downstream furnace.
- the thermally treated workpiece may, for example, consist of metal or a metal compound.
- the workpiece may be a band-shaped workpiece, wherein the band-shaped workpiece is transported in a continuous forward movement or a sequential forward movement along the running direction of the workpiece by the heat treatment device.
- the direction of travel of the workpiece defines a direction of the workpiece between an entrance of the chamber and an exit of the chamber.
- the running direction within the chamber can vary.
- a corresponding roller may deflect the workpiece as it passes through the chamber.
- the rollers according to the present invention constitute a bearing for the workpiece. This means that the workpiece is supported and / or deflected by the respective roller.
- the first side of the workpiece contacts the outer surface of the roller.
- the rollers may be hollow or full rolls.
- the rollers can be made of ceramic, plastic or metal.
- the rolls may be coated with a refractory material, eg Teflon, tungsten carbide (WC), vanadium carbide (VC) and / or composites, eg OCMC (Oxide-Ceramic-Matrix Composite).
- the rollers can be heated or cooled.
- the rollers may be temperature controlled such that an outer surface of the roller may be temperature controlled and may have a temperature range of between 150 ° C and 600 ° C or more.
- the rollers can have a diameter of 50 mm to 100 mm. But rolls with diameters larger than 100 mm are possible.
- the rollers rotate around the respective axis of rotation.
- one of the rollers is driven by a drive unit to drive the workpiece through the chamber.
- the axes of rotation of two adjacent rollers along the running direction of the workpiece and additionally along a direction orthogonal to the running direction of the workpiece by the heat treatment device are spaced from each other.
- the axes of rotation of two adjacent rollers can be separated in the vertical and / or horizontal direction.
- the axes of rotation of two adjacent rollers are parallel to each other.
- the roller may be secured and sealed to the housing with a second brush seal, or preferably with a pair of brush seals as described below. Between the pair of second brushing directions, an intermediate section with atmosphere, e.g. N2, to be defined.
- the "first" brush seal consists of brushes that come into contact with the second side of the workpiece.
- the first brush seals are in relation to the workpiece with respect to the corresponding arranged the role.
- the brushes of the first brush seal thus contact the second side of the workpiece and the respective opposite roller the first side of the workpiece.
- a sealing device is formed because a process gas flow from one side of the first brush to the other side of the first brush (ie along the running direction) is reduced or prevented.
- the brushes are flexible, in particular elastically deformable and consist for example of high temperature resistant material.
- the brushes can be made from a variety of materials, from plastics to high temperature alloys, depending on the application.
- the brushes can be made of materials resistant to corrosion and high temperatures, eg of CrNi (chromium-nickel) alloys and Ni-base alloys (INOX) (materials with steel alloys) with, for example, at least 10.5 mass% chromium content.
- the sealing brushes can be filled brushes with eg steel or plastic filling.
- the length of the bristles between the workpiece and the brush holder of the sealing brush should be between 5 mm and 100 mm (millimeters) with a diameter of 0.07 mm to 0.1 mm (millimeters).
- the first brush seal is positioned opposite the roller so that the brushes of the brush seal contact the surface of the first roller without the presence of the workpiece.
- the workpiece is moved between the first brush seals and the respective roller so that the workpiece bends away the brushes of the brush seal so that the brushes of the brush seal are the second side of the brush seal Workpiece while the workpiece is supported on its first side by the first roller.
- the sections are sealed by the corresponding roller / brush seal.
- the workpiece can be driven through, the sections being always hermetically sealed from each other, as the flexible bristles (brushes) of the first brush seal are automatically adjusted by their flexible properties.
- the sealing device defined by a roller and a corresponding first brush seal, seals and separates a first chamber section from a second chamber section.
- predefined process parameters of the atmosphere can be set. For example, in the first chamber section, an atmosphere having a first gas composition, a first temperature and / or a first pressure is preset. Accordingly, an atmosphere having a second gas composition, a second temperature and / or a second pressure may be set in a second section of the chamber.
- the sealing device consisting of a corresponding roller and brush seal combination, thus two chamber sections can be separated and sealed.
- the second section is defined as the environmental section of the heat treatment device, and the first section is within the chamber of the heat treatment device.
- the first roller and the respective first brush seal form an input or output of the furnace housing.
- the first and second sections define internal chamber sections that pass through each first roller / brush seal device are separated from each other.
- the chamber is divided into different sections.
- a section may be a heating or cooling section of the chamber in which the workpiece is thermally treated (ie, heated or cooled).
- another section may be a sealing chamber forming a buffer zone between the thermal treatment section and another section (eg, the environment).
- a protective gas atmosphere of nitrogen N2 may be provided, while in the second section a highly concentrated hydrogen-H2 atmosphere may be provided.
- process pressures with a pressure difference of 0.1 mbar to 20 mbar can be set between the two sections.
- a desired process gas flow can be generated by sealing leaks, so that uncontrolled escape of dangerous process gases can be prevented.
- the first temperature may be set, the second section may have a higher or lower temperature with respect to the temperature of the atmosphere of the first section.
- a sealing device which includes a first roller on one side of a workpiece to be heated and a corresponding brush seal on the other side of the workpiece to be heated.
- the brushes of the first brush seal for example, touch the roller surface and / or the workpiece.
- the workpiece passes through the bristles of the first brush seal and deflects the bristles above the workpiece surface.
- the remaining bristles of the brush can with the Surface of the roller come into contact.
- the workpiece is always (hermetically) sealed against the environment and areas of the chamber. Each section can have different process atmospheres.
- the flexible bristles of the sealing brush are deflected over the workpiece width.
- the first roll may be driven by a drive unit in that the first roller transports the workpiece along the direction of travel.
- the first roller relative to the first brush seal is adjustable in the way that the distance between the first roller and the first brush seal is adjustable.
- the axis of rotation of the roller can be adjusted by an adjusting device, eg with hydraulic or pneumatic cylinders or by linear precision drives.
- the first brush seal on the opposite side of the workpiece can also be adjusted in a similar manner as described below.
- the Rolls for example, perpendicular to the band pass line (direction) in the direction of the workpiece or be moved away, for example, to deflect the workpiece as needed (position-controlled).
- the first roller is adjustable along the running direction.
- the axis of rotation of the roller can be adjusted by an adjusting device.
- the first brush seal on the opposite side of the workpiece can be adjusted in the same way as described below along the direction of travel.
- the rollers can be displaced parallel to the belt pass line (running direction) in the direction of the workpiece or away therefrom, eg to deflect the workpiece as required (position-controlled).
- the first brush seal is adjustable relative to the first roller so that the distance between the first roller and the first brush seal is adjustable.
- the complete first brush seal can be adjusted in the direction of the first roll.
- the first brush seal is adjustable along the radial direction of the first roll.
- the brushes of the first brush seal may be extended and extended out of the brush holder as described below. For example, if a new metal band (workpiece) is used, the first brush seal can be moved away from the first roller. A so-called needle formed by an I-profile carrying the metal band can then be fed into the housing until the band is fully supported by the rollers.
- the first brush seal is biased by a biasing device relative to the first roller so that the biasing device pushes the brush seal in the direction of the first roller.
- the biasing device may e.g. consist of a spring, in particular a tension spring or a compression spring. This ensures that the brushes of the first brush seal are permanently pressed either against the first roll or against the inserted workpiece.
- the first brush seal is adjustable along the running direction and / or the first brush seal is adjustable along the direction parallel to the axial direction of the axis of rotation of the first roll.
- the first brush seal consists of brushes and a brush holder for holding the brushes.
- the brushes may be clamped or glued into the brush holder with an extended portion of the brush extending from the end of the brush holder toward the first roller.
- the flexible and elastic character of the brushes is adjustable depending on the length of the brushes between the end of the brush holder and the surface of the roller or the workpiece.
- the first brush seal further includes a brush adjusting device, wherein the brush adjusting device is constructed so that the brushes can be moved with respect to the brush holder so that the length of the brushes is adjustable between the (end of) the brush holder and the first roller is.
- the adjusting device may for example consist of a movable piston to which the brushes are attached.
- the movable piston can be moved in the direction of the first roller or away from it.
- the adjusting device or the movable piston can be moved pneumatically, hydraulically or electrically.
- the heat treatment device further includes a partition which partially separates the first section from the second section, the partition extending from the housing into the chamber.
- the first brush seal is attached to the bulkhead.
- the partition may consist of a free end to which the first brush seal is attached.
- the heat treating device further includes a second brush seal, the second brush seal contacting the first roller such that the first section of the chamber is further sealed by the first roller and the second brush seal opposite the second section of the chamber ,
- the second brush seal seals the space between the first roller and the housing become. That is, the second brush seal forms a seal with the first roller in an area where no workpiece is passed.
- the first roller can be rotated with respect to the second brush seal.
- the second brush seal may have the same or a similar configuration and be made of a similar or identical material as the first brush seal described above. This also applies to all other brush seals.
- the heat treatment device further includes a further second brush seal, which is arranged at a distance from the second brush seal.
- the further second brush seal contacts the first roller in such a way that the first chamber section is additionally sealed off from the second chamber section by the first roller and the further second brush seal.
- the further second brush seal may have the same construction and be made of the same material as the second brush seal.
- the second brush seal and the further second brush seal are so far apart that the respective brushes of the second brush seal and the other second brush seal abut at different points in the circumferential direction of the roller on the surface of the relevant role. They preferably do not touch and leave a partial surface of the workpiece between them.
- the heat treatment device further includes a third brush seal.
- the third brush seal is spaced apart from the first brush seal along the direction of travel.
- the roller and the third brush seal are arranged relative to each other such that the first side of the workpiece is in contact with the roller element and the second side of the workpiece is in contact with the third brush seal.
- the third brush seal may have the same construction and be made of the same material as the first brush seal. The first brush seal and the third brush seal are so far apart that the respective brushes of the first brush seal and the third brush seal come into contact with the workpiece or the surface of the roll at various locations.
- the first and third brush seals on the workpiece surface do not touch and leave a partial surface of the workpiece free between them.
- an intermediate section can be created, for example with a predetermined atmosphere. This is also possible between the second and a further second brush seal.
- the heat treatment device further includes a second roller that is spaced from the first roller in the direction of travel.
- the workpiece is sustainable by the second roller.
- the heat treatment device further includes a further first brush seal, wherein the second roller and the further first brush seal are arranged to each other, that another first side of the workpiece with the second roller comes into contact and another second side of the workpiece, the other the second side of the further first side, the further first brush seal touched in the way that at least the first section or a further first section of the chamber is sealed by the second roller and the other first brush seal over a third section.
- FIG. 1 shows a schematic representation of the heat treatment unit, in particular a sealing device consisting of two rollers, according to an exemplary embodiment of the present invention
- FIG. 2 shows a schematic representation of a brush seal according to an exemplary embodiment of the present invention
- FIG. 3 shows a schematic representation of a heat treatment device with three rollers and a third brush seal according to an exemplary embodiment of the present invention
- FIG. 4 shows a heat treatment system with a heat treatment zone coupled to a housing forming a seal unit, as shown in FIG 1, according to an exemplary embodiment of the present invention.
- FIG. 1 shows a heat treatment device 100 according to an exemplary embodiment of the present invention.
- the heat treatment device 100 may be a sealing device installed at the entrance of a furnace (eg shown in FIG. 4).
- the heat treatment device 100 consists of two rollers 1 10, 120 according to an exemplary embodiment of the present invention.
- the heat treatment device 100 is used for the thermal treatment of a workpiece 101, in particular a band-shaped workpiece 101.
- the heat treatment device 100 consists of a housing 102 which encloses a chamber 103 in which the workpiece 101 can be positioned to perform a thermal treatment.
- the piece of work 101 is supported by a first roller 1 10 and is movable along a running direction 105.
- the first roller 1 10 and a first brush seal 1 1 1 are arranged to each other that a first side of the workpiece 101 with the first roller member 1 10 comes into contact and a second side of the workpiece 101, the second side of the first side opposite, the first brush seal 1 1 1 touched in the way that at least a first section I (eg a first seal chamber) of the chamber 103 through the first roller 1 10 and the first brush seal 1 1 1 relative to a second section II (eg a second sealing chamber of the chamber 103) is sealed.
- a first section I eg a first seal chamber
- a second section II eg a second sealing chamber of the chamber 103
- the heat treatment device further consists of the second roller 120, which is spaced from the first roller 1 10 along the direction 105.
- the workpiece 101 is supported by the second roller 120.
- the heat treatment device 100 further includes an additional first brush seal 121, wherein the second roller 120 and the further first brush seal 121 are thus provided. are arranged so that the second side of the workpiece 101, the second roller 120 and the first side of the workpiece 101, the additional first brush seal 121 contacts, so that the first section I through the second roller 120 and the additional first brush seal 121 with respect to the section III (For example, a third seal chamber) of the chamber 103 is sealed.
- the heat treatment device 100 in the exemplary embodiment in Fig. 1 is a pre-seal chamber, e.g. is arranged in front of the entrance of a furnace. In the chamber 103, temperatures of about 100 ° C to 1200 ° C may be present.
- the heat-treated workpiece 101 is shown in FIG. a band-shaped workpiece 101 made of metal.
- the band-shaped workpiece 101 is transported in a continuous forward movement or a sequential forward movement along the running direction 105 of the workpiece 101 by the heat treatment device 100.
- the rollers 1 10, 120 form a support for the workpiece 101st
- the workpiece 101 is carried by the first roller 1 10 and / or deflected by the second roller 120.
- the first side of the workpiece 101 touches the outer surface of the corresponding rollers 1 10, 120.
- the rollers 1 10, 120 are here hollow rollers.
- the rollers 1 10, 120 rotate about the respective roatation axis 1 17.
- one of the rollers 1 10, 120 is driven via a drive unit to drive the workpiece 101 through the chamber 103.
- the rotati Onsachen 1 17 of the two adjacent rollers 1 10, 120 are arranged in the vertical and horizontal direction at a distance.
- the rollers 1 10, 120 are attached to the housing 102 and are sealed relative to this with one and possibly another second brush seal 1 12, 1 13, 122, 123.
- an axial seal between the axial end and the housing 102 may be arranged.
- the first brush seal 1 1 1 and the other first brush seal 121 consist of brushes that touch the second side of the workpiece 101.
- the first brush seals 1 1 1, 121 are arranged with respect to the workpiece 101 relative to the corresponding roller 1 10, 120.
- the brushes of the first brush seals 1 1 1, 121 thus touch the second side of the workpiece 101, and the respective opposite roller 1 10, 120 contacts the first side of the workpiece 101.
- a seal arrangement is formed because a process gas flow is reduced or prevented from one side of the first brush seal 1 1 1, 121 to the other side of the first brush seal 11 1 1, 121 (i.e., along the running direction 105).
- the brushes of the first brush seals 1 1 1, 121 are flexible, in particular elastically deformable and consist for example. Made of high temperature resistant material.
- the first brush seals 1 1 1, 121 are arranged with respect to the roller so that the brushes of the first brush seals 1 1 1, 121 without the presence of the workpiece 101, the surface of the first and second rollers 1 10, 120 touch the ren Workpiece 101 is in operation of the heat treatment device 100th between the first brush seals 1 1 1, 121 and the corresponding roller 1 10, 120 driven so that the workpiece 101 bends away the brushes of the respective first brush seals 1 1 1, 121, so that the brushes touch the second side of the workpiece 101, while the workpiece 101 is supported on its first side by the respective roller 1 10, 120.
- the sections I, II are sealed by the arrangement of the respective roller 1 10, 120 / first brush seal 1 1 1, 121.
- the workpiece 101 can be moved, and the sections I, II, III are always hermetically sealed from each other, since the flexible bristles (brush) of the first brush seals 1 1 1, 121 automatically adapted by their flexible properties.
- a sealing arrangement by a corresponding roller 1 10, 120 and an associated first brush seal 1 1 1, 121 defined.
- the sealing arrangement separates the first section I of the chamber 103 from a second section II of the chamber 103.
- predetermined process parameters of the atmosphere within the respective sections I, II, III can be specified.
- an atmosphere having a first gas composition such as nitrogen N2
- a first pressure is generated.
- the first gas atmosphere may be fed through a first inlet port 106.
- an atmosphere having a second gas composition such as ambient air at ambient temperature
- an atmosphere with a third gas composition such as hydrogen H2 at a second temperature
- the chamber 103 can also have a controllable outlet opening, so that a desired amount of gas can escape controlled.
- the second section II is defined as the surrounding section of the heat treatment device 100, and the first section I is located in the chamber 103 of the heat treatment device 100.
- the first roller 1 10 and the associated first Brush seal 1 1 1 an input or output of the housing 102.
- the first and the third section I, III surround inner chamber sections, which are separated by the arrangement of the corresponding second roller 120 / additional first brush seal 121.
- a protective gas atmosphere of nitrogen N2 may be provided
- a highly concentrated hydrogen-H2 atmosphere may be provided in the third section.
- different process pressures with a pressure difference of 0.1 mbar to 20 mbar can be set between the two sections I, III.
- a desired process gas flow can be generated by sealing leaks, so that an uncontrolled discharge of hazardous process gases can be prevented.
- first temperature may be set in the first section I
- a higher or lower temperature than the temperature of the atmosphere in the first section I may prevail in the third section III.
- the brushes of the first brush seal 1 1 1, 121 touch, for example, the roller surface of the corresponding roller 1 10, 120 and / or the workpiece 101.
- the workpiece 101 passes through the interface between the bristles of the first Brush seals 1 1 1, 121 and deflects the bristles, which then come into contact with the workpiece surface.
- the flexible bristles of the first brush seals 1 1 1, 121 are deflected over the workpiece width.
- the remaining bristles of the first brush seals 1 1 1, 121 which have not been bent away by the workpiece 101, with the surface of the respective roller 1 10, 120 in contact.
- the workpiece 101 in each section (hermetically) against the environment II and the other sections I, III of the chamber 103 is sealed.
- the first roller 110 and / or the second roller 120 is adjustable with respect to the associated first brush seal 1 1 1, 121 so that a distance between the respective roller 1 10, 120 and the corresponding first brush seal 1 1 1, 121 adjustable is.
- the rollers 1 10, 120 may e.g. perpendicular to the belt pass line (running direction 105) in the direction of the workpiece 101 or away from it, e.g. to deflect the workpiece 101 as required (position-controlled).
- first brush seals 1 1 1, 121 relative to the first roller 1 10 and the roller 120 are adjustable so that a distance between the respective roller 1 10, 120 and the corresponding first brush seal 1 1 1, 121 is adjustable.
- the complete first brush seals 1 1 1, 121 in the direction of the respective rollers 1 10, 120 can be adjusted.
- the first brush seal 1 1 1, 121 is biased by a biasing device relative to the associated roller 1 10, 120 so that the biasing device presses the first brush seal 1 1 1, 121 in the direction of the respective rollers 1 10, 120.
- the heat treatment device 100 also includes partitions 1 14, 1 15, 1 16.
- the respective partitions 1 14, 1 15, 1 16 subdivide two adjacent sections I, III.
- the partitions 1 14, 1 15, 1 16 protrude from the housing 102 into the chamber 103.
- the first brush seal 1 1 1 is attached to the partition wall 1 14.
- the second brush seal 1 12 and the further second brush seal 1 13 are attached to the respective further partitions 1 15, 1 16.
- the partitions 1 14, 1 15, 1 16 may have a free end to which the respective brush seals 1 1 1, 1 12, 1 13 are attached.
- a separation of the respective sections I, II is realized by the partition wall 1 14 between the first brush seal 1 1 1 and the housing 102.
- the corresponding further brush seals 121, 122, 123 are attached to the respective partition walls 1 14 ', 1 15', 1 15 ', 1 16'.
- the second brush seal 1 12 contacts the first roller 1 10 in such a way that the first section I of the chamber 103 by the first roller 1 10 and the second brush seal 1 12 relative to the second section II of the chamber 102 is further sealed. With the second brush seal 1 12 so the space between the first roller 1 10 and the housing 102 can be sealed.
- the second brush seal 1 12 seals together with the first roller 1 10 from a range through which no workpiece 101 is driven through. At the same time, the first roller 1 10 with respect to the second brush seal 1 12 are rotated.
- the second brush seal 1 12 may have the same construction and consist of the same material as the first brush seal 1 1 1 described above.
- a further second brush seal 1 13 at a distance from the second brush seal 1 12 is arranged.
- the further second brush seal 1 13 contacts the first roller 1 10 in such a way that the first section I of the chamber 103 is additionally sealed by the second section II of the chamber 103 by the first roller 1 10 and the further second brush seal 1 13.
- the further second brush seal 1 13 may have a comparable construction and consist of corresponding material as the second brush seal 1 12.
- the second brush seal 1 12 and the further second brush seal 1 13 are so far apart that the respective brushes of the second brush seal 1 12 and the other second brush seal 1 13, the surface of the associated roller 1 10 at different locations in the circumferential direction of the roller 1 10 touch.
- a predetermined atmosphere eg nitrogen N 2
- nitrogen N 2 can be generated by introducing gas via a second inlet opening 107.
- another second brush seal 123 is spaced from the second brush seal 122.
- the second brush seals 122, 123 touch the roller 120 in such a way that the first section I of the chamber 103 is additionally sealed with respect to the third section III of the chamber 103.
- the second brush seal 122 and the further second brush seal 123 are so far apart that the respective brushes of the second brush seal 122 and the further second brush seal 123 touch the surface of the associated roller 120 at different locations in the circumferential direction of the roller 120.
- a predetermined atmosphere eg nitrogen N2
- Fig. 2 shows a more detailed illustration of a brush seal 1 1 1, 1 12, 121, 121, 122 according to an exemplary embodiment of the present invention.
- the respective brush seal consists e.g. from the brushes 201 and a brush holder 202 for receiving the brushes 201 or bristles.
- the brushes 201 may be clamped or glued within the brush holder 202 with a protruding portion BH of the brush extending from one end of the brush holder 202 in the direction of e.g. the first roller 1 10 extends.
- the flexible and elastic character of the brushes 201 can be adjusted.
- the brush seal further includes a brush adjuster 203, wherein the brush adjuster 203 for moving the brushes 201 relative to the brush holder 202 is configured such that the length of the brushes 201 (eg, length BH) is between the (end of) the brush holder 202 and the respective roller is adjustable. But it is also possible to attach the brush holder 202 together with the brushes 201 to the Bürstenverstellvortechnik 203, so that the brush holder 202 is moved relative to the Bürstenverstellvortechnisch 203.
- 3 shows a schematic representation of a heat treatment device (100) with three rollers 1 10, 120, 130 and a third brush seal 334 according to an exemplary embodiment of the present invention.
- the exemplary embodiment shown in FIG. 3 consists of a similar first and second brush seal / roller arrangement as shown in FIG.
- the exemplary embodiment additionally includes a third brush seal / roller assembly.
- the heat treatment device 100 further includes a third roller 330, which is arranged in the running direction 105 at a distance from the second roller 120.
- the workpiece 101 is supported by the roller 330.
- the heat treatment device 100 further includes a further first brush seal 331, wherein the roller 330 and the further first brush seal 331 are arranged relative to each other such that the second side of the workpiece 101 contacts the third roller 330 and the first side of the workpiece 101 contacts the further first brush seal 331 in the way that the illustrated third section III is sealed by the third roller 330 and the further first brush seal 331 with respect to the fourth section IV of the chamber 103.
- the heat treatment device 100 additionally consists of a third brushing direction 334.
- the third brushing seal 334 is arranged in the running direction 105 at a distance from the further first brush seal 331.
- the third roller 330 and the third brush seal 334 are arranged so that the second side of the workpiece 100 contacts the third roller 330 and the first side of the workpiece 100 contacts the third brush seal 334.
- the third brush seal 334 may have the same construction and be made of the same material as the first brush seal. tend 1 1 1 exist.
- the further first brush seal 331 and the third brush seal 334 are so far apart that the respective brushes of the first brush seal 331 and the third brush seal 334 come into contact with the workpiece 101 and the surface of the third roller 330, respectively, at various locations.
- a predetermined atmosphere such as nitrogen N2
- a second brush seal 332 and a further second brush seal 333 are arranged and touch a surface of the third roller 330.
- the arrangement of the first roll 1 10 / first brush seal 1 1 1 seals the first section I with respect to the second section II of the chamber 103.
- the first section I can be a hydrogen / water
- the second roller 120 / additional first brush seal 121 seals the second section II from the third section III of the chamber 103.
- the second and third sections II, III may have a protective gas atmosphere, e.g. filled with nitrogen N2.
- the arrangement third roller 130 / further brush seal 331, 334 seals the third section III from the fourth section IV of the chamber 103.
- the fourth section IV may have an H2 atmosphere, e.g. for purposes of reducing the workpiece 101.
- FIG. 4 shows a heat treatment system 400 having a heat treatment zone functioning eg as an oven coupled to a heat treatment device 100 as shown in FIG.
- the heat treatment device 100 has For example, the environment surrounding the heat treatment device 100 is designated by the section II.
- a nitrogen atmosphere is set at the pressure p1.
- an intermediate section 109 is delimited, in which an atmosphere with the pressure p 2 is shown.
- a process gas atmosphere is generated with the pressure p3.
- the pressure p3 is lower than the pressure p1.
- the pressure p1 is higher than the ambient pressure pO and lower than the pressure P 2.
- the heat treatment device 100 may be fixedly connected to the heat treatment system 400. Alternatively, the heat treatment device 100 may be interchangeably connected to the heat treatment system 400.
- the heat treatment device 100 can therefore be retrofitted to conventional heat treatment systems 400, ie furnaces.
- a first closing element 402 and a second closing element 403 are arranged.
- the workpiece 101 is traversed between the first closing element 402 and the second closing element 403.
- the closing elements 402, 403 can be moved in the direction of each other until the two closing elements 402, 403 touch the workpiece 101 for sealing purposes. For example, in an emergency (eg if the band-shaped Workpiece ruptures) the two closing elements 402, 403 seal the outlet of the housing 102.
- an intermediate tunnel section 406 is arranged between the housing 102 and the heat treatment system 400.
- the intermediate tunnel section 406 may consist of the cooling elements 404, 405, in particular of water cooling elements. Alternatively, the intermediate tunnel section 406 may be e.g. Also included heating elements to heat the workpiece 101.
- the intermediate tunnel section 406 is a fourth section IV. Behind the intermediate tunnel section 406, the workpiece 101 passes through the heat treatment system 400 forming a fifth section V. In the heat treatment zone 400, a high-purity atmosphere up to a high hydrogen concentration can be generated.
- the heat treatment system 400 may be e.g. be a high temperature oven.
- the workpiece 101 can be transported by another roller 401.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1701597.5A GB2559201B (en) | 2017-01-31 | 2017-01-31 | Sealing arrangement for a continuous furnace |
| PCT/EP2018/052446 WO2018141818A1 (de) | 2017-01-31 | 2018-01-31 | Dichtungsvorrichtung für einen durchlaufofen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3577241A1 true EP3577241A1 (de) | 2019-12-11 |
Family
ID=58462646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18706414.2A Pending EP3577241A1 (de) | 2017-01-31 | 2018-01-31 | Dichtungsvorrichtung für einen durchlaufofen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11427883B2 (de) |
| EP (1) | EP3577241A1 (de) |
| KR (1) | KR102529001B1 (de) |
| GB (1) | GB2559201B (de) |
| RU (1) | RU2769120C2 (de) |
| WO (1) | WO2018141818A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024208547A1 (de) * | 2024-09-09 | 2026-03-12 | Sms Group Gmbh | Ein- und Ausschleusen eines Metallbands in eine und aus einer Behandlungskammer |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU296445A1 (ru) | 1969-10-20 | 1977-12-05 | Завод "Москабель" | Многоходова установка дл индукционного отжига проволоки |
| JPS5729522A (en) * | 1980-07-26 | 1982-02-17 | Sumitomo Metal Ind Ltd | Preventing method for build-up in hearth roll type heat treatment furnace |
| JPS57152427A (en) * | 1981-03-13 | 1982-09-20 | Nippon Steel Corp | Continuous heat treatment device |
| US4437901A (en) * | 1981-12-21 | 1984-03-20 | Southwire Company | Method and apparatus for improved heat treatment of aluminum alloy rod |
| SU1337428A1 (ru) * | 1985-12-26 | 1987-09-15 | Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина | Прот жна печь-ванна дл нагрева длинномерных изделий |
| DE4423664A1 (de) | 1994-07-07 | 1996-05-15 | Bwg Bergwerk Walzwerk | Verfahren zum Herstellen von kaltgewalzten Stahlbändern aus nichtrostendem Stahl und Metallbändern, insbesondere aus Titanlegierungen |
| JP3574216B2 (ja) * | 1995-04-20 | 2004-10-06 | 新日本製鐵株式会社 | 横型連続焼鈍炉の雰囲気仕切装置 |
| JPH1180842A (ja) * | 1997-09-05 | 1999-03-26 | Nippon Steel Corp | 連続焼鈍炉の炉内雰囲気仕切装置 |
| JP2001032018A (ja) * | 1999-07-21 | 2001-02-06 | Mitsubishi Heavy Ind Ltd | ステンレス鋼の焼鈍炉 |
| US20060118242A1 (en) * | 2001-02-12 | 2006-06-08 | Anthony Herbert | Atmospheric pressure plasma system |
| US6669202B1 (en) * | 2002-06-27 | 2003-12-30 | General Electric Co. | Multi-core brush seal assembly for rotary machines |
| DE102007009678A1 (de) | 2006-10-27 | 2008-04-30 | Sms Demag Ag | Bandschleuse |
| JPWO2011074383A1 (ja) * | 2009-12-14 | 2013-04-25 | 新日鐵住金株式会社 | 誘導加熱装置の制御装置、誘導加熱システム及び誘導加熱装置の制御方法 |
| JP5482362B2 (ja) * | 2010-03-26 | 2014-05-07 | Jfeスチール株式会社 | 鋼板の絞り検出装置 |
| CN102828195A (zh) * | 2011-06-14 | 2012-12-19 | 辽宁科技大学 | 热轧带钢连续还原除鳞方法及其装置 |
| CN202176716U (zh) * | 2011-07-22 | 2012-03-28 | 黄石山力科技发展有限公司 | 一种具有纤维幕帘的出口密封装置 |
| CN204052401U (zh) * | 2014-08-29 | 2014-12-31 | 广东韶钢松山股份有限公司 | 一种坯料表面清扫装置 |
-
2017
- 2017-01-31 GB GB1701597.5A patent/GB2559201B/en active Active
-
2018
- 2018-01-31 WO PCT/EP2018/052446 patent/WO2018141818A1/de not_active Ceased
- 2018-01-31 RU RU2019126632A patent/RU2769120C2/ru active
- 2018-01-31 EP EP18706414.2A patent/EP3577241A1/de active Pending
- 2018-01-31 US US16/482,306 patent/US11427883B2/en active Active
- 2018-01-31 KR KR1020197023070A patent/KR102529001B1/ko active Active
Also Published As
| Publication number | Publication date |
|---|---|
| GB2559201A (en) | 2018-08-01 |
| GB2559201B (en) | 2020-10-14 |
| WO2018141818A1 (de) | 2018-08-09 |
| RU2019126632A (ru) | 2021-03-02 |
| RU2769120C2 (ru) | 2022-03-28 |
| KR102529001B1 (ko) | 2023-05-08 |
| KR20190113812A (ko) | 2019-10-08 |
| US11427883B2 (en) | 2022-08-30 |
| GB201701597D0 (en) | 2017-03-15 |
| RU2019126632A3 (de) | 2021-04-30 |
| US20200002781A1 (en) | 2020-01-02 |
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