EP2908960A2 - Système de transfert thermique dans la fabrication de produits de coulée continue longs - Google Patents

Système de transfert thermique dans la fabrication de produits de coulée continue longs

Info

Publication number
EP2908960A2
EP2908960A2 EP13736780.1A EP13736780A EP2908960A2 EP 2908960 A2 EP2908960 A2 EP 2908960A2 EP 13736780 A EP13736780 A EP 13736780A EP 2908960 A2 EP2908960 A2 EP 2908960A2
Authority
EP
European Patent Office
Prior art keywords
heat transfer
transfer medium
strand
heat
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.)
Withdrawn
Application number
EP13736780.1A
Other languages
German (de)
English (en)
Inventor
Hubert Reinisch
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.)
Maschinenfabrik Niehoff GmbH and Co KG
Original Assignee
Maschinenfabrik Niehoff GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Niehoff GmbH and Co KG filed Critical Maschinenfabrik Niehoff GmbH and Co KG
Publication of EP2908960A2 publication Critical patent/EP2908960A2/fr
Withdrawn legal-status Critical Current

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
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • 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
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • 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
    • F27B2017/0091—Series of chambers, e.g. associated in their use
    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00—Type of treatment of the charge
    • F27M2003/01—Annealing

Definitions

  • the invention relates to a device for the transfer of heat in the production of elongated strand and a method for operating such a device.
  • energy consumption is gaining in importance, especially with rising energy costs.
  • a general objective of technical innovations is usually to reduce energy consumption and increase efficiency, especially in energy-intensive processes.
  • the production of semi-finished products with high degrees of deformation is frequently such an energy-intensive process; this also includes the production and processing of elongated extrudates.
  • the annealing process is terminated by removing heat energy from the elongate strand material after a sufficient period of time by means of a suitable cooling device.
  • This cooling serves on the one hand a targeted process management and on the other hand it simplifies the handling of the elongated strand material immediately after production.
  • the extracted from the strand heat energy is often released unused to the environment. It is additionally possible that during the cooling of the elongated strand material, the environment is contaminated with water vapor or the like, this may worsen the working conditions for operating personnel at such a facility.
  • the object of the present invention is to increase the overall efficiency of a device for producing elongated extrudates and thus to reduce their energy requirements.
  • a heat transfer device means a device for transferring heat energy.
  • Heat energy is preferably transferred by means of a heat transfer device within a continuous material processing device.
  • the energy form is not changed during this transfer, including in particular for the purposes of the invention to be understood that the heat energy is not converted into electrical, mechanical or another form of energy. Rather, the heat energy, preferably in a targeted Heat flow, conducted.
  • the direction of this heat flow is independent by a temperature gradient.
  • an elongated extruded material is to be understood as meaning a geometric body having a cross-sectional area and a longitudinal extension, in particular orthogonal to this cross-sectional area.
  • the spatial Heat- ments of this cross-sectional area are very small compared to this longitudinal extent.
  • the spatial extent of this cross-sectional area in the range of individual millimeters or of individual tenths of millimeters.
  • this longitudinal extension is an extension of meters up to a quasi-endless length.
  • this extruded material has as one component a "good" electrical conductor, preferably a metallic material, more preferably copper, aluminum or steel
  • this extruded material consists of one of the abovementioned constituents, or the extruded material is particularly preferably made of an alloy
  • the cross-sectional area preferably has a certain geometric shape, preferably a polygonal, rounded, oval or more preferably circular shape, particularly preferred is this elongate strand material as a copper, steel or aluminum wire with a circular cross-section.
  • a continuous section of this strand material is to be understood by a first section of this strand material, preferably a second section is to be understood as meaning a further region of the same strand material or another strand material.
  • these first and second portions of the elongated stock may be on the same body or on different bodies.
  • a heat transfer medium is to be understood as a medium for transferring a quantity of heat.
  • heat quantity, heat energy and energy flow, heat flow are preferably to be understood synonymously.
  • this heat transfer medium is adapted to transport heat.
  • This heat transfer medium preferably has a Preferably, high thermal conductivity is to be understood as meaning thermal conductivities which are greater than 0.025 W / (mK), more preferably this component is selected such that it has a thermal conductivity of a range of preferably 1000> ⁇ > 0.025, preferably 500> ⁇ > 0.5 and particularly preferably 400> ⁇ > 0.59, more preferably the heat transfer medium consists of such a constituent, more preferably the heat transfer medium is a component of water, ethanol, steel, Aluminum, copper, brass, oil or the like, more preferably, the heat transfer medium consists of one of the aforementioned components or of a mixture of substances in which one of the aforementioned components is a substantial proportion.
  • a temperature of this first extrudate section is to be understood as meaning a first outlet temperature before a heat flow is dissipated from this extruded section by means of the heat transfer medium as planned, in particular immediately before this heat flow is dissipated.
  • a second outlet temperature is to be understood as meaning a temperature of this second extrudate section before a heat flow by means of this heat transfer medium is supplied to this extrudate section in a planned manner, in particular immediately before this heat flow is supplied.
  • this first outlet temperature is reduced by the removal of the heat flow and this second outlet temperature is increased by supplying this heat flow.
  • this heat flow is transmitted as completely as possible from this first Stranggutabites means of this heat transfer medium to this second Stranggutabites.
  • the passing of this heat or energy stream means that thermal energy is transferred from a first location to a second location.
  • this heat flow is transmitted by convection and thus goes with a particle flow, especially accompanied by a liquid or gas flow.
  • this heat flow can be transmitted by heat radiation or heat conduction, in particular without particle flow.
  • this heat flow is transmitted by means of the heat transfer medium.
  • the heat flow is transmitted by a combination of the aforementioned effects or preferably only by means of one of the aforementioned effects.
  • this heat flow is conducted along a temperature gradient, wherein such a temperature gradient is formed by contacting this heat transfer medium with this first and second strand section.
  • this heat transfer medium is a medium of indeterminate geometric shape, preferably, this medium is liquid or gaseous, more preferably, this medium changes its state of aggregation in the conduction of the heat flow (liquid-gas, gas-liquid).
  • a liquid or gaseous heat transfer medium enables a particularly simple conduction of this heat transfer medium.
  • this heat transfer medium it is also possible for this heat transfer medium to be accommodated in a defined space, through which both the first and the second section of the strand material are guided.
  • the heat transfer medium is in direct contact with at least one of the two sections of the strand material. Preferably, at least one of these sections of the material to be stranded is passed through a space in which this heat transfer medium is received.
  • the second of these sections of the material to be stranded is guided through this space and preferably also comes into direct contact with this heat transfer medium.
  • the direct contact of one of these Stranggutabitese a particularly good release of the heat flow to this heat transfer medium or a particularly good absorption of this heat flow is made possible by this heat transfer medium, in particular by this large contact area.
  • such a configuration allows a particularly simple construction of a heat transfer device.
  • the heat transfer medium does not come into direct contact with one of these Stranggutabitese.
  • this heat transfer medium is guided in a guide, while under a guide tubes, hoses, channels or the like to understand.
  • this first Stranggutabites transmits this heat flow by means of heat radiation or heat conduction and additionally or alternatively by means of convection on this heat transfer medium.
  • this heat transfer medium flows through this guide to this second Stranggutabites and transmits this heat flow by radiation and additionally or alternatively by convection and heat conduction to this second strand cut.
  • the heat transfer medium is embodied as a geometric body with a predefinable contour, that is to say as a body in the state of aggregation. More preferably, at least one of these two Stranggutabitese, preferably both, is in direct contact with this heat transfer medium.
  • this heat transfer medium has on its surface, preferably in the region of contacting with this Stranggutabites a coating.
  • a coating preferably serves to reduce or prevent particle transfer from the heat transfer medium to the web section.
  • such a coating is preferably set up to reduce or prevent welding of the extrudate section with the heat transfer medium.
  • such a coating is adapted to further improve the heat transfer, preferably by increasing the contact area between the heat transfer medium and Stranggutab- section. Further preferably, such a coating is applied only temporarily and is renewed continuously or preferably discontinuously.
  • the heat energy is transferred from this first wire section to this second wire section through a plurality of heat transfer media, preferably through a plurality of different heat transfer media.
  • a plurality of heat transfer media preferably through a plurality of different heat transfer media.
  • one of these heat transfer media in the form of a geometric body, in particular this roller-like body is surrounded by one of these heat transfer media in liquid or gaseous form.
  • this liquid or gaseous heat transfer medium also serves the protection of this first or second Stranggutabitess.
  • this liquid heat transfer medium is designed as oil, water, or a mixture of oil and water, in particular an oil-water emulsion.
  • such a heat transfer medium has a boiling point in the range of 100 ° C to 400 ° C, preferably 150 ° C to 350 ° C, and more preferably, the boiling point is substantially 200 ° C, more preferably, the boiling point is substantially included 350 ° C.
  • the same gaseous or liquid heat transfer medium is used in the case of heat transfer through a plurality of cascaded heat transfer devices in all heat transfer devices.
  • the same gaseous or liquid heat transfer medium is used in the case of heat transfer through a plurality of cascaded heat transfer devices in all heat transfer devices.
  • different heat transfer media are used in different heat transfer devices.
  • gaseous or liquid heat transfer media by the use of different gaseous or liquid heat transfer media is an adaptation to the temperature range of the respective cascade allows, and thus an improved heat transfer is possible.
  • gaseous heat transfer medium air, argon, nitrogen or other gases such as those known from fusion welding and the like are used.
  • a mixture is used as the gaseous heat transfer medium, in which at least one of the abovementioned gases is a constituent. More preferably, one of these heat transfer media, which is formed as a geometric body is operated in a substantially evacuated space.
  • impurities of Stranggutabitese be reduced.
  • this heat transfer medium is designed essentially as a roller-like body.
  • this roller-like body has a circular cross-sectional area.
  • this roller-like body has a longitudinal extent perpendicular to this cross-sectional area.
  • These first and / or second extrudate sections contact this roller-like body at least in sections along a lateral surface, this lateral surface surrounding the cross-sectional surface and extending in the direction of the longitudinal extent.
  • the roller-like body has an axis of rotation, which has an equidistant distance to this lateral surface substantially.
  • Such a design preferably produces a substantially cylindrical lateral surface.
  • this roller-like body rotates in the processing of the elongated strand around this axis of rotation, preferably this represents an axis of symmetry of this cylindrical surface.
  • the speed at which this roller-like body rotates selected so that the speed of the lateral surface of the speed of the strand material, which this contacted, corresponds.
  • this lateral surface has at least one groove-like indentation.
  • This indentation is intended in particular to receive this first or second strand material section during the processing of the material to be extruded.
  • this groove-like indentation around the lateral surface is configured circumferentially, preferably completely encircling. Further preferably, the cross section of this indentation is oriented on the shape of this elongated strand.
  • this indentation is to be understood that in the case of a circular cross-section of the material strand and the indentation in this lateral surface preferably at least partially circular, so in particular a particularly large contact area between the strand material and the heat transfer medium allows and thereby improves the heat transfer.
  • this groove-like indentation is to be understood as a circumferential around this roller-like heat transfer medium groove, with a preferably polygonal, in particular rectangular or triangular, preferably an oval or more preferably round cross-section. Further preferably, this indentation is not oriented to the cross section of the strand.
  • this heat transfer medium has at least a first and a second of these indentations. More preferably, this heat transfer medium has a first group of these indentations and a second group of these indentations, wherein a group of indentations has a plurality of these indentations. Further preferably, this first group of indentations or this first indentation is configured to contact this first strand section and to form this second indentation or second group of indentations. Formations is preferably adapted to contact this second Stranggutabites.
  • this first strand section wraps around this heat transfer medium with a first wire wrap angle ⁇ and this second strand section with a second wire wrap angle ⁇ .
  • a wire wrap angle is to be understood as meaning that angle which marks the route along which this first or second strand material section contacts this heat transfer medium.
  • such a wire wrap angle is composed as the sum of several sections, in particular for the case that this strand section repeatedly contacts the heat transfer medium. Such a multiple contact is obtained in particular when the strand section alternately contacts this deflecting device and this heat transfer medium.
  • this Drahtumschlingungswinkel is greater than a full circle (2 ⁇ or 360 °). Further preferably, these first and second wire wrap angles are different.
  • this second Drahtumschlingungswinkel ß greater than this first Drahtumschlingungswinkel.
  • the amount of heat transferred by one of these Stranggutabitese depends in particular on the temperature difference between this heat transfer medium and this Stranggutabites.
  • the heat quantity QU transferred to this second strand material section it is particularly desirable for the heat quantity QU transferred to this second strand material section to essentially correspond to the heat quantity Q1.
  • certain losses are to be expected, so that as a rule the amount of heat Ql can only essentially correspond to the heat quantity QU.
  • the temperature difference between this first strand section and this heat transfer medium will be greater than between this second strand section and this heat transfer medium.
  • the heat transfer medium generally has no uniform temperature but locally different temperatures. A larger temperature difference will usually lead to better heat transfer, with otherwise the same conditions.
  • the second Drahtumschlingungswinkel is chosen so large that substantially the same amount of heat from this heat transfer medium on this second Stranggutabites passes as from this first Stranggutabites on this heat transfer medium.
  • a second wire wrap angle ⁇ which is not equal to this first wire wrap angle ⁇ , a particularly efficient heat transfer between this first and this second strand section is achieved by means of the heat transfer medium.
  • the wire wrap angles are to be construed as radians.
  • K and L factors are to be construed in which different input parameters.
  • these factors include input parameters such as the first outlet temperature, the second outlet temperature, the temperature of the heat transfer medium in the area of contacting with this first strand section and this second strand section.
  • these parameters also include parameters with which the heat transfer from these extrudate sections to this heat transfer medium can be described, wherein such heat transfer parameters are preferably empirically determined variables, more preferably such parameters can be table values.
  • a limit temperature in particular for this heat transfer medium, can be incorporated into these factors.
  • a temperature at which the heat transfer medium is permanently operable, or a temperature which sets itself as the steady-state temperature for this heat transfer medium is to be understood as meaning a temperature below this limit.
  • geometric factors such as preferred length, width and diameter of this heat transfer medium and these Stranggutabitese, more preferably also geometric sizes which describe this indentation, can be incorporated into these factors. In particular, by the description of the wire wrap angle in the manner described, and thus the preferred embodiment of the heat transfer device in this form, a particularly efficient transfer of the amount of heat from this first to this second Stranggutabites is achieved.
  • the axis of rotation of this heat transfer medium is aligned orthogonal to a direction of movement of this first or second strand section.
  • this heat transfer device has a deflection device.
  • this deflection device is designed as a roller device.
  • this deflection device has an axis of rotation.
  • the axis of rotation of the deflection is skewed aligned with the axis of rotation of the heat transfer medium.
  • one of these strand sections, first or second strand section alternately contacts this heat transfer device and this deflection device.
  • one of these heat transfer media is assigned a plurality of deflection devices.
  • the assignment is to be understood as meaning that one of the sections of the strand material is during its scheduled movement contacted the heat transfer medium, then contacted a first deflection and then again this heat transfer medium and then a second deflection.
  • these heat transfer medium associated with these first and second deflecting device.
  • one of these heat transfer media can also be assigned more than two deflection devices in the above-mentioned sense.
  • a particularly secure and precise guidance of Stranggutabitese is achieved, thereby enabling a particularly good and efficient heat transfer from this first Stranggutabites on this second Stranggutabites.
  • this axis of rotation of this heat transfer medium is arranged askew to this direction of movement of this first or second strand section.
  • this axis of rotation is inclined at an angle between zero and 25 ° with respect to a normal plane of this direction of movement of the elongated strand. Due to this inclination of the rotation axis, in particular without a deflection device, the elongated strand material can contact the heat transfer medium for particularly large wire wrap angles.
  • large wire splay angles are wire wrap angles of more than ⁇ / 4 or 90 °.
  • a continuous material processing device has a plurality of, preferably successively arranged, heat transfer devices.
  • this continuous material processing device has a plurality of substantially identical, preferably identical heat transfer devices.
  • this strand material processing device has a plurality of, but at least two, different heat transfer devices.
  • the first portion of the elongated strand material passes through these plantekhauns wornen serially, ie temporally successively.
  • the second Stranggutabites this is preferably a further section of the same elongated strand, this heat transfer means preferably passes in opposite directions to this first Stranggutabites. Further preferably, this first Stranggutabites and this second Stranggutabites are not part of the same strand but part of each borrowed different. Further preferably, in each of these heat transfer devices, part of the heat energy is transferred from this first strand section to this second strand section. In particular, this partial transmission allows the use of specially adapted to a narrow operating range and thus efficiently operating heat transfer devices.
  • an additional tempering device is to be understood as meaning a device for tempering one of these extrudate sections, in particular for reducing or increasing the temperature. Further preferably, such an additional tempering device is to be understood as meaning a heating device, wherein such a heating device conductively or inductively heats this stranded portion.
  • an additional tempering device is to be understood as meaning a device for cooling this strand product section, in particular a cooling device.
  • a cooling device is to be understood as any device which extracts heating energy from this strand section as planned, preferably heat exchanger devices or the like. As shown, thermodynamically, the complete heat energy of this first strand section can not be transferred to this second strand section.
  • the differential heat quantity can be supplied to this second strand section.
  • a first Stranggutabites not be cooled to a sufficiently low temperature by means of one of these heat transfer media, in particular by a cooling device, this Stranggutabites can then be cooled to the required temperature.
  • a heat Transfer device on one of these heaters and one of these cooling devices more preferably, a group of heat transfer means one of these heaters and one of these cooling devices.
  • a particularly accurate adjustment of the desired temperatures at these Stranggutabitesen is possible, thus a particularly efficient Stranggut kausvorraum can be displayed.
  • An inventive method for operating this strand processing device has at least the following steps:
  • the removal of an energy stream, in particular of this first strand section means that heat energy in particular is withdrawn, preferably in order to set a desired material structure by means of a specific annealing process, and more preferably in order to better handle the elongated strand.
  • the passing of this energy flow is to be understood in particular to mean a heat flow along a heat gradient, in particular in this heat transfer medium.
  • this heat gradient is due to a temperature difference between this first Stranggutabites and this second Stranggutabites a.
  • this energy flow is directed from a contact point of the heat transfer medium with this first strand section towards a contact point with this second strand section.
  • the transfer of a part of this energy flow means that this energy flow is preferably transferred to unavoidable losses.
  • supplying at least part of this energy flow means that in particular the heat energy, preferably as completely as possible, is transferred to this second strand material section by means of the heat transfer medium.
  • FIG. 1 shows a device for the transmission of heat energy
  • FIG. 6 shows a section through a heat transfer device
  • FIG. 7 shows a plurality of heat transfer devices connected in series
  • FIG. 8 shows a cascaded arrangement of a plurality of heat transfer devices
  • FIG. 9 shows the temperature paths for a first and a second strand section when passing through a heat transfer device.
  • FIG. 1 shows a device for transferring a quantity of heat from a first strand material section 1 a to a second strand material section 1 b.
  • the heat quantity (Q ab ) 3 is withdrawn from this first Stranggutabites 1 a and transferred by means of a heat transfer medium 7 to this second Stranggutabites 1 b.
  • This amount of heat Q a b is withdrawn in a first section 5 of this first Stranggutabites 1 a and passed to the heat transfer medium 7.
  • the heat transfer medium 7 conducts this amount of heat to a second area 4 and transfers the amount of heat Q to this second strand portion b.
  • This first strand section 1 a and this second strand section 1 b are part of a common elongate strand material 1.
  • This strand 1 is transported along a direction of movement 6 during the processing of this elongated strand material in a strand material processing device. Before entering section 4, this strand has the starting temperature Tu.
  • the extrudate is recrystallization annealed at the temperature Tm.
  • the elongated strand material 1 is again cooled in section 5, before entering this section, the material to be extruded is the temperature T
  • the annealing process is terminated, on the other hand, the elongated strand 1 is due to the low temperature T
  • FIG. 2a shows a front view of a heat transfer device with a plurality of roller-like heat transfer media 7a. Each of these heat transfer media 7a rotates about an axis of rotation 8.
  • a first strand portion 1a moves in the direction of movement 6a.
  • a second strand section 1b moves in the direction of movement 6b, counter to this direction of movement 6a.
  • FIG. 2b shows a side view of the same heat transfer device as FIG. 2a.
  • the first strand section 1a first contacts the heat transfer media 7a at the top and then circulates these heat transfer media 7a in a clockwise direction, initially downwards in the direction 17, and leaves the heat transfer medium. the top, while this first Stranggutabites 1 a moves substantially in the direction of movement 6a.
  • the second strand section 1 b moves essentially in the direction of movement 6b and thus in opposite directions to this first strand section 1a.
  • This second strand section initially contacts these heat transfer media 7a at the bottom and revolves them, also in a clockwise direction 17. Further, this second strand section 1b also leaves these heat transfer media 7a below. From the figures 2a and 2b it can be seen that the respective Stranggutabitese completely wrap around each heat transfer medium several times before they leave this again. By this multiple wrap the wire wrap angle (not shown) is large and thus a favorable heat transfer from this first Stranggutabites is made possible on this second Stranggutabites means of the heat transfer medium.
  • FIG. 3 shows a possible further embodiment for a heat transfer medium with a so-called deflecting device 9.
  • the heat transfer medium 7a is in turn configured as a roller, this roller rotates about its axis of rotation 8.
  • the strand 1 wraps around the heat transfer medium 7a several times during processing. In order to achieve a particularly good guidance of the material to be stranded 1 on the heat transfer medium 7a, this is lifted by the deflection device 9 of the heat transfer medium 7a and deflected. In this case, the deflecting device 9 rotates about its axis of rotation 9a. For this deflection, the axis of rotation 9a is pivoted relative to the axis of rotation 8 by the angle ⁇ . As a result of this inclination of the two axes of rotation 9a and 8, a multiple looping of the heat transfer medium 7a through the elongated extrudate 1 is possible and thus a better heat transfer can be achieved.
  • FIG. 4 shows different recesses 7c and 7d in a heat transfer medium 7a.
  • these different recesses are provided for receiving strand material with different cross-sectional areas.
  • the circular shape 7c is provided for receiving an elongate strand material with likewise circular cross-sectional area 1c.
  • the prism-shaped indentation 7d is provided for receiving an elongated material to be stranded with a polygonal cross-sectional profile 1d.
  • Figure 5 shows a roller-like heat transfer medium 7a, which is wrapped by a first Stühlgutabites 1 a, this heat transfer medium 7a rotates in the direction 17 and transported this first Stranggutabites 1 a in the direction of movement 6.
  • the length of the contact surface between this first winding material 1a and the Heat transfer medium 7a is characterized by the wire wrap angle ⁇ .
  • the wire wrap angle ⁇ is thus a measure of the length of the contact surface between a Stranggutabites and a Wärem- transfer medium.
  • FIG. 6 shows a section through a heat transfer device, this heat transfer device having a first heat transfer medium 7a1 and a second heat transfer medium 7a2. Furthermore, this heat transfer device has a first additional temperature control device 1 1 and a second additional temperature control device 12. The elongate strand 1 passes through this heat transfer device in the direction of movement 6.
  • FIG. 6 shows only a part of the heat transfer device.
  • this second additional tempering device 12 By means of this second additional tempering device 12, an additional amount of heat is removed from this elongated strand material, for example by convection.
  • these additional tempering devices By means of these additional tempering devices, a particularly precise process control of the annealing process for this elongated extrudate 1 is achieved and thus an improved strand material processing device is made available.
  • FIG. 7 shows a plurality of heat transfer devices connected in series. In this case, Figure 7 shows only a section of these heat transfer devices.
  • the elongate strand 1 moves in the direction of movement. 6 in the first heat transfer device a) and wraps around the heat transfer media 7aa. Thereafter, this elongated strand 1 leaves the first heat transfer device a) and enters the second heat transfer device b). In this second heat transfer device b), the elongate strand 1 wraps around the two heat transfer media 7ab and leaves this second heat transfer device b) in the direction of the third heat transfer device c).
  • the elongate strand 1 wraps around the two heat transfer media 7ac and leaves this third heat transfer device c) in the direction of movement 6.
  • These heat transfer devices a) -c) each have a housing device 20a, 20b, 20c. These housings 20a-20c allow the space surrounding the heat transfer media to be filled with another heat transfer medium 13a, 13b, 13c.
  • a certain amount of heat is transferred from a first strand section 1 a (not shown) to a second strand section 1 b (not shown).
  • FIG. 8 shows a further cascade-like arrangement of heat transfer devices.
  • FIG. 8 again shows only a detail of the respective heat transfer devices.
  • These two heat transfer devices d), e) are designed substantially identical.
  • the two heat transfer devices each have heat transfer media 7a1, 7a2 and respective deflection devices 91, 92.
  • the elongate strand 1 passes through the two heat transfer devices d), e) in the direction of movement 6 in succession.
  • a series connection of a plurality of heat transfer devices and thus a particularly good heat transfer from a first strand material section 1a (not shown) to a second strand material section 1b (not shown) is particularly easy.
  • FIG. 9 shows a first temperature path 15 for a first strand section and a second temperature path 16 for a second strand section during passage through a two-stage heat transfer device.
  • the second Stranggutabites occurs at the temperature level T1 (second output temperature) in this heat transfer device and receives from a heat transfer medium, an amount of heat until it reaches the temperature level T2.
  • the first Stranggutabites gives to the same heat transfer medium, starting from the temperature level T3 a quantity of heat.
  • this amount of heat leads to the cooling of this first strand section and to the course of the temperature path 15a and on the other hand to the heating of the second strand section and to the course of the temperature path 16a.
  • this second Stranggutabites After this heat transfer, this second Stranggutabites has reached the temperature level T2. This second Stranggutabites then receives from another heat transfer medium on a further amount of heat and reaches the temperature level T3.
  • the first strand section discharges substantially this additional amount of heat to the same heat transfer medium and, as a result of this heat transfer, cools from the temperature level T4 (first exit temperature) to the temperature level T3.
  • the heating of the second strand section leads to the course of the temperature path 16b and the cooling of the first strand section leads to the course of the temperature path 15b.
  • the temperature level T5 shows the target temperature for the required annealing process.
  • the temperature difference 15c shows the potential for a third heat transfer stage.
  • the temperature difference 16c shows how much temperature this second strand material has cut still needs to be supplied to reach this target temperature, this can for example be supplied by an additional tempering (Fig. 6).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne un système de transfert thermique, destiné notamment à être utilisé dans un dispositif de traitement de produits de coulée continue, lequel dispositif est configuré en particulier pour traiter des produits de coulée continue longs. Le système de transfert thermique comporte un milieu caloporteur et il est configuré pour traiter un premier segment de produit de coulée continue, en particulier un premier segment de fil, ledit premier segment de produit de coulée continue ayant une première température de sortie. Ledit système de transfert thermique est configuré pour faire varier ladite première température de sortie, en particulier pour la réduire, en conduisant un flux d'énergie. Le système de transfert thermique est en outre configuré pour traiter un deuxième segment de produit de coulée continue, en particulier un deuxième segment de fil, ledit deuxième segment de produit de coulée continue ayant une deuxième température de sortie qui est inférieure à ladite première température de sortie. En outre, le milieu caloporteur est configuré pour conduire ledit flux de chaleur vers ledit deuxième segment de fil et en particulier pour élever ladite deuxième température de sortie.
EP13736780.1A 2012-10-19 2013-07-09 Système de transfert thermique dans la fabrication de produits de coulée continue longs Withdrawn EP2908960A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012020622.4A DE102012020622A1 (de) 2012-10-19 2012-10-19 Vorrichtung zur Wärmeübertragung bei der Herstellung von langgestrecktem Stranggut
PCT/EP2013/002023 WO2014060057A2 (fr) 2012-10-19 2013-07-09 Système de transfert thermique dans la fabrication de produits de coulée continue longs

Publications (1)

Publication Number Publication Date
EP2908960A2 true EP2908960A2 (fr) 2015-08-26

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US (1) US20150225807A1 (fr)
EP (1) EP2908960A2 (fr)
JP (1) JP2015533389A (fr)
CN (1) CN104797352A (fr)
BR (1) BR112015008850A2 (fr)
DE (1) DE102012020622A1 (fr)
MX (1) MX2015004837A (fr)
RU (1) RU2015118588A (fr)
WO (1) WO2014060057A2 (fr)

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DE102021201104A1 (de) * 2021-02-05 2022-08-11 Maschinenfabrik Niehoff Gmbh & Co Kg Drahtdurchlaufglühe
EP4481309A1 (fr) * 2023-06-19 2024-12-25 Alite GmbH Four de calcination indirecte idc

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Also Published As

Publication number Publication date
WO2014060057A2 (fr) 2014-04-24
MX2015004837A (es) 2016-01-20
US20150225807A1 (en) 2015-08-13
BR112015008850A2 (pt) 2017-07-04
RU2015118588A (ru) 2016-12-10
JP2015533389A (ja) 2015-11-24
WO2014060057A3 (fr) 2014-11-06
DE102012020622A1 (de) 2014-04-24
CN104797352A (zh) 2015-07-22

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