EP2908960A2

EP2908960A2 - Device for heat transfer during the production of elongated strand-form material

Info

Publication number: EP2908960A2
Application number: EP13736780.1A
Authority: EP
Inventors: Hubert Reinisch
Original assignee: Maschinenfabrik Niehoff GmbH and Co KG
Current assignee: Maschinenfabrik Niehoff GmbH and Co KG
Priority date: 2012-10-19
Filing date: 2013-07-09
Publication date: 2015-08-26
Also published as: DE102012020622A1; RU2015118588A; WO2014060057A3; CN104797352A; JP2015533389A; BR112015008850A2; WO2014060057A2; MX2015004837A; US20150225807A1

Abstract

The invention relates to a heat transfer device, in particular for use in a strand-form material processing apparatus, wherein said apparatus is in particular equipped to process elongated strand-form material. The heat transfer device has a heat transfer medium and is equipped to process a first section of strand-form material, in particular a first section of wire, wherein said first section of strand-form material has a first output temperature. The heat transfer device is equipped to change the first output temperature, in particular to reduce the first output temperature, by conducting a flow of energy. The heat transfer device is further equipped to process a second section of strand-form material, in particular a second section of wire, wherein said second section of strand-form material has a second output temperature and wherein the second output temperature is lower than the first output temperature. Furthermore, the heat transfer medium is equipped to conduct the flow of heat to the second section of wire and in particular to increase the second output temperature.

Description

Apparatus for heat transfer in the production of elongated

continuous material

Description

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. In both the private and industrial sectors, energy consumption is gaining in importance, especially with rising energy costs. As a consequence of this development, a general objective of technical innovations is usually to reduce energy consumption and increase efficiency, especially in energy-intensive processes. In particular, 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. In the production of such elongated extrudates, it is usually necessary, in addition to high mechanical performance to achieve the desired plastic deformations, also to spend high thermal powers to adjust the desired metal lattice structures by stress relief annealing or even recrystallization annealing.

The production of elongated extrudates is described below, as is typically done today in a so-called in-line process, while the elongated strand material, first mechanically deformed, then heated and cooled and finally wound up. The degrees of deformation in the plastic deformation of the semifinished product are so great that the deformation process is accompanied by thermal work steps; this is necessary in order to be able to set the desired material structure. In particular, such thermal operations are to be understood as annealing processes which have a high energy consumption. During inline annealing, the material to be stranded is heated by conductive or inductive heating in a so-called wire annealer until the desired material structure has been established and embrittlement of the material to be stranded is reduced. Further processing of the elongated material, for example winding on a spool at the end of production or the scheduled processing of the product strand, would be possible in the unannealed state. was difficult or impossible. 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. It is occasionally known to supply the heat energy withdrawn from the elongated extruded material to the energy supply network, whereby such use of thermal energy is only possible to a limited extent. On the one hand, the heat energy is independent of the actual demand, on the other hand, the heat energy incurred must often be converted into other forms of energy or transmitted over long distances, which is associated with losses and deteriorates the overall efficiency.

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.

This object is achieved by the subject matter according to the teaching of independent claim 1 and by a method for operating this device, to preferred embodiments of the invention are the subject of the dependent claims.

For the purposes of the invention, 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. Further preferably, 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. Preferably, the direction of this heat flow is independent by a temperature gradient.

In the context of the invention, 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. Preferably, the spatial Erstre- ments of this cross-sectional area are very small compared to this longitudinal extent. Further preferably, the spatial extent of this cross-sectional area in the range of individual millimeters or of individual tenths of millimeters. Further preferably, this longitudinal extension is an extension of meters up to a quasi-endless length. Preferably, this extruded material has as one component a "good" electrical conductor, preferably a metallic material, more preferably copper, aluminum or steel Preferably, this extruded material consists of one of the abovementioned constituents, or the extruded material is particularly preferably made of an alloy In addition, 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.

For the purposes of the invention, 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. Preferably, therefore, these first and second portions of the elongated stock may be on the same body or on different bodies.

For the purposes of the invention, a heat transfer medium is to be understood as a medium for transferring a quantity of heat. For the purposes of this invention, heat quantity, heat energy and energy flow, heat flow are preferably to be understood synonymously. Preferably, 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>λ> 0.025, preferably 500>λ> 0.5 and particularly preferably 400>λ> 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.

For the purposes of the invention, 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.

For the purposes of the invention, 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.

Further preferably, 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. Preferably, this heat flow is transmitted as completely as possible from this first Stranggutabschnitt means of this heat transfer medium to this second Stranggutabschnitt.

For the purposes of the invention, the passing of this heat or energy stream means that thermal energy is transferred from a first location to a second location. Preferably, in this conduction, the amount of heat is transferred from this first section to this second section of the strand material. Preferably, this heat flow is transmitted by convection and thus goes with a particle flow, especially accompanied by a liquid or gas flow. Further preferably, this heat flow can be transmitted by heat radiation or heat conduction, in particular without particle flow. Further preferably, this heat flow is transmitted by means of the heat transfer medium. Further preferably, the heat flow is transmitted by a combination of the aforementioned effects or preferably only by means of one of the aforementioned effects. Preferably, 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.

In a preferred embodiment, 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. Alternatively, 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. In a preferred embodiment, 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. Further preferably, 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 Stranggutabschnitte 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. Further advantageously, such a configuration allows a particularly simple construction of a heat transfer device. By transferring the heat from this first Stranggutabschnitt on this second Stranggutabschnitt is achieved that for heating this second Stranggutabschnittes only more energy for annealing must be supplied to the same, which was not transmitted from the first Stühlgutabschnitt, thus the efficiency of the strand processing device is increased.

In a preferred embodiment, the heat transfer medium does not come into direct contact with one of these Stranggutabschnitte. Preferably, this heat transfer medium is guided in a guide, while under a guide tubes, hoses, channels or the like to understand. Preferably, this first Stranggutabschnitt 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. Further preferably, this heat transfer medium flows through this guide to this second Stranggutabschnitt and transmits this heat flow by radiation and additionally or alternatively by convection and heat conduction to this second strand cut. An example is heat pipes (so-called He- atpipes) In such a configuration, no material interactions between see the portion of the strand material and the heat transfer medium, since they do not come into direct contact with each other. Thus, on the one hand advantageously prevented that the respective portion of the strand material is contaminated by the heat transfer medium and on the other hand, that impurities are introduced into this heat transfer medium. Such an embodiment advantageously increases the efficiency of the strand material processing device, since impurities are reduced and heat energy can still be transferred from this first to this second strand section.

In a preferred embodiment, 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 Stranggutabschnitte, preferably both, is in direct contact with this heat transfer medium. By a heat transfer medium with a fixed state of aggregation is reached that no seals are necessary, this allows a particularly simple construction of the heat transfer device and at the same time an increase in efficiency of Stranggutbearbeitungsvorrichtung. By directly contacting the Stranggutabschnitte a particularly good heat transfer is achieved by these Stranggutabschnitten on this heat transfer medium. Immediate contact is in particular not contrary that this heat transfer medium has on its surface, preferably in the region of contacting with this Stranggutabschnitt a coating. Such a coating preferably serves to reduce or prevent particle transfer from the heat transfer medium to the web section. Furthermore, such a coating is preferably set up to reduce or prevent welding of the extrudate section with the heat transfer medium. Further preferably, 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.

In a further preferred embodiment, 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. Further preferably, 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. Further preferably, this liquid or gaseous heat transfer medium also serves the protection of this first or second Stranggutabschnitts. Further preferably, this liquid heat transfer medium is designed as oil, water, or a mixture of oil and water, in particular an oil-water emulsion. More preferably, 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. Preferably, 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. As a result of such a uniform heat transfer medium, during the serial passage of these extrudate sections, no contamination occurs due to different heat transfer media which adhere to the strand section. Further preferably, different heat transfer media are used in different heat transfer devices. In particular, 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. Further preferably, as the gaseous heat transfer medium, air, argon, nitrogen or other gases such as those known from fusion welding and the like are used. Further preferably, 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. In particular, by a gaseous heat transfer medium in the form described above or by an evacuated environment impurities of Stranggutabschnitte be reduced.

In a preferred embodiment, this heat transfer medium is designed essentially as a roller-like body. In essence, this roller-like body has a circular cross-sectional area. Further preferably, 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. Further, 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. Further preferably, 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. Preferably, 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. Such a configuration of the heat transfer medium enables substantially smooth contact between the extrudate and this heat transfer medium, and thus a particularly good heat transfer from this first extrudate section to this heat transfer medium or a particularly good heat transfer from this heat transfer medium. allows medium on this second Stranggutabschnitt, thus an increase in efficiency for the Stranggutverarbeitungsvorrichtung is reached.

In a preferred embodiment, 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. Preferably, 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. Under an orientation of the shape of this indentation on the shape of the material to be stranded 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. Further preferably, 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. Likewise inlays that are designed to be elastic in sections, so that a nestling, or independent generation of a large contact surface is achieved to the strand. By a groove-like indentation in this heat transfer medium in particular the contact surface between one of these Stranggutabschnitte and this heat transfer medium is increased, thus enabling a more efficient heat transfer, on the other hand, the leadership of the material is improved.

In a preferred embodiment, 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 Stranggutabschnitt. Due in particular to the first outlet temperature, which is preferably higher than this second outlet temperature, a heat flow from this first indentation or this first group of indentations to this second indentation or this second group of indentations results in this heat transfer medium. Due to the configuration of different recesses for this first Stranggutabschnitt and this second Stranggutabschnitt on the same heat transfer medium, which preferably has a good thermal conductivity, an efficient heat transfer from this first Stranggutabschnitt is achieved to this second Stranggutabschnitt.

In a preferred embodiment, this first strand section wraps around this heat transfer medium with a first wire wrap angle α and this second strand section with a second wire wrap angle β. For the purposes of the invention, such 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. Further preferably, 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. Further preferably, this Drahtumschlingungswinkel is greater than a full circle (2π or 360 °). Further preferably, these first and second wire wrap angles are different. By different Drahtumschlingungswinkel arise, in particular under the condition of the same diameter for this heat transfer medium in the contacting through this first Stranggutabschnitt and this second Stranggutabschnitt, different length contact surface between this first Stranggutabschnitt and this heat transfer medium and this second Stranggutabschnitt and this heat transfer medium. The diameters of the heat transfer medium may be different (slightly) in the longitudinal direction of the material to compensate for thermal expansion differences in the extruded material. The between these strand sections and this heat transfer medium over- The amount of heat transferred can therefore be influenced in particular by this simple geometric relationship (wire wrap angle). Thus, in particular a particularly simple influence, the transmitted amount of heat allows and thus achieves a particularly efficient embodiment of the device.

In a preferred embodiment, this second Drahtumschlingungswinkel ß greater than this first Drahtumschlingungswinkel. The amount of heat transferred by one of these Stranggutabschnitte depends in particular on the temperature difference between this heat transfer medium and this Stranggutabschnitt. In order to ensure the most efficient use of the heat quantity Q1 of the first strand product 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. In particular under technically real conditions, 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. As a rule, 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. In particular, it is not disregarded that 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. Further preferably, the second Drahtumschlingungswinkel is chosen so large that substantially the same amount of heat from this heat transfer medium on this second Stranggutabschnitt passes as from this first Stranggutabschnitt on this heat transfer medium. In particular, as a result of a second wire wrap angle β, which is not equal to this first wire wrap angle α, a particularly efficient heat transfer between this first and this second strand section is achieved by means of the heat transfer medium. In a preferred embodiment, this first wire wrap angle and second wire wrap angle satisfy a relationship of the form: α ^* K = β ^* L. Preferably, the wire wrap angles are to be construed as radians. Further preferably, among the factors K and L factors are to be construed in which different input parameters. Further preferably, 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. Further preferably, 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. Further preferably, a limit temperature, in particular for this heat transfer medium, can be incorporated into these factors. Within the meaning of the invention, 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. Further preferably, geometric factors such as preferred length, width and diameter of this heat transfer medium and these Stranggutabschnitte, 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 Stranggutabschnitt is achieved.

In a preferred embodiment, the axis of rotation of this heat transfer medium is aligned orthogonal to a direction of movement of this first or second strand section. Further preferably, this heat transfer device has a deflection device. Further preferably, this deflection device is designed as a roller device. In particular, this deflection device has an axis of rotation. Further preferably, the axis of rotation of the deflection is skewed aligned with the axis of rotation of the heat transfer medium. Further preferably, one of these strand sections, first or second strand section, alternately contacts this heat transfer device and this deflection device. Further preferably, one of these heat transfer media is assigned a plurality of deflection devices. For the purposes of the invention, 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. In such a case, these heat transfer medium associated with these first and second deflecting device. Preferably, one of these heat transfer media can also be assigned more than two deflection devices in the above-mentioned sense. In particular, by a described in the form of the heat transfer device with one or more deflecting a particularly secure and precise guidance of Stranggutabschnitte is achieved, thereby enabling a particularly good and efficient heat transfer from this first Stranggutabschnitt on this second Stranggutabschnitt.

In a preferred embodiment, this axis of rotation of this heat transfer medium is arranged askew to this direction of movement of this first or second strand section. Preferably, 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. In this context, large wire splay angles are wire wrap angles of more than π / 4 or 90 °. In particular, by such a heat transfer device with large Drahtumschlingungswinkeln and without deflecting a particularly efficient heat transfer is achieved and thus provides an improved system for continuous material processing. In a preferred embodiment, a continuous material processing device according to the invention has a plurality of, preferably successively arranged, heat transfer devices. Preferably, this continuous material processing device has a plurality of substantially identical, preferably identical heat transfer devices. In a further preferred embodiment, this strand material processing device has a plurality of, but at least two, different heat transfer devices. Further preferably, the first portion of the elongated strand material passes through these Wärmeübertragunseinrichtungen serially, ie temporally successively. The second Stranggutabschnitt, this is preferably a further section of the same elongated strand, this heat transfer means preferably passes in opposite directions to this first Stranggutabschnitt. Further preferably, this first Stranggutabschnitt and this second Stranggutabschnitt 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. Further advantageously, by means of a plurality of heat transfer devices, a transfer of the thermal energy from this first strand material section to this second strand product section taking place with a thermodynamically high degree of efficiency can be achieved and thus a particularly efficient strand material processing device can be represented. In a further preferred embodiment, the temperature of these Stranggutabschnitte can be influenced by additional temperature control. For the purposes of this invention, 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. Further preferably, an additional tempering device is to be understood as meaning a device for cooling this strand product section, in particular a cooling device. Further preferably, 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. By means of an additional tempering device, in particular a heating device, the differential heat quantity can be supplied to this second strand section. Further preferably, a first Stranggutabschnitt not be cooled to a sufficiently low temperature by means of one of these heat transfer media, in particular by a cooling device, this Stranggutabschnitt can then be cooled to the required temperature. Preferably, 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. In particular, by these additional tempering a particularly accurate adjustment of the desired temperatures at these Stranggutabschnitten is possible, thus a particularly efficient Stranggutverarbeitungsvorrichtung can be displayed.

An inventive method for operating this strand processing device has at least the following steps:

Removing an energy flow, in particular a heat flow from this first strand section,

Conducting at least part of this energy flow to this heat transfer medium,

Transferring at least part of this energy flow by means of this heat transfer medium to this second strand section,

- Supplying at least a portion of this energy flow, to this second wire section. For the purposes of the invention, 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.

For the purposes of the invention, 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. Preferably, this heat gradient is due to a temperature difference between this first Stranggutabschnitt and this second Stranggutabschnitt a. More preferably, 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. For the purposes of the invention, the transfer of a part of this energy flow means that this energy flow is preferably transferred to unavoidable losses. For the purposes of the invention, 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. Preferred embodiments and feature are the subject of the figures, these figures are partially schematic. Show

1 shows a device for the transmission of heat energy, Figure 2a / b: a plurality of views of a Wärmeübertragungseinreichtung,

3 shows a heat transfer medium with a deflection device,

4 shows different formations on a heat transfer medium,

5: a roller-like heat transfer medium,

6 shows a section through a heat transfer device, FIG. 7 shows a plurality of heat transfer devices connected in series,

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. In this case, the heat quantity (Q _ab ) 3 is withdrawn from this first Stranggutabschnitt 1 a and transferred by means of a heat transfer medium 7 to this second Stranggutabschnitt 1 b. This amount of heat Q _a b is withdrawn in a first section 5 of this first Stranggutabschnitt 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. In order to influence the material structure in the desired manner, the extrudate is recrystallization annealed at the temperature Tm. After the desired material structure has been set, the elongated strand material 1 is again cooled in section 5, before entering this section, the material to be extruded is the temperature T | on. By this cooling, on the one hand, the annealing process is terminated, on the other hand, the elongated strand 1 is due to the low temperature T | _V easier to handle.

Figure 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. In this heat transfer device, 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. Through this plurality of heat transfer media 7a, the amount of heat to be transferred is gradually transferred from this first strand portion 1 a to this second strand portion 1 b. 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 Stranggutabschnitt 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 Stranggutabschnitte 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 Stranggutabschnitt is made possible on this second Stranggutabschnitt 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 γ. 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. In this case, 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. By this assignment of the indentation to these cross-sectional areas is Achieved a larger contact area between the heat transfer medium 7a and the elongated extrudate (1 c, 1 d) and thus allows a better heat transfer. Figure 5 shows a roller-like heat transfer medium 7a, which is wrapped by a first Stühlgutabschnitt 1 a, this heat transfer medium 7a rotates in the direction 17 and transported this first Stranggutabschnitt 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 α. The wire wrap angle α is thus a measure of the length of the contact surface between a Stranggutabschnitt 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. By means of this first Zusatztemperiereinrichtung 1 1 and this second Zusatztemperiereinrichtung 12, the annealing process for this elongated strand 1 can be set very precisely. In this case, an additional amount of heat is transferred to this elongated strand material 1, for example by electric heating, via this first additional tempering device. 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. 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. First, 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). In 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. In each of the heat transfer devices a) -c), 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). By means of the previously described filling with the heat transfer media 13a-13c, on the one hand a better heat transfer between these extruded sections 1a, 1b is made possible and on the other hand it becomes possible to build up a protective gas atmosphere around this elongated extruded material and thus to reduce impurities of this extruded material.

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. By an embodiment of the heat transfer devices designed in the manner shown, 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. In the figures Fig.6 to Fig.8 only the forward direction or return direction of the elongated strand material is shown in each case, so in each case only the first or second Stranggutabschnitt 1a or 1b. Offset in the direction of the sheet plane, the heat transfer media are each looped around by the other strand section 1 b or 1 a. For a better understanding, reference is made to FIGS. 2a and 2b.

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. In this case, the second Stranggutabschnitt 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 Stranggutabschnitt gives to the same heat transfer medium, starting from the temperature level T3 a quantity of heat. On the one hand, 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. After this heat transfer, this second Stranggutabschnitt has reached the temperature level T2. This second Stranggutabschnitt 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).

Claims

P a n t a n s p r e c h e

Stranggutbearbeitungsvorrichtung with a heat transfer device, this device is arranged for processing elongated Stranggut, and this heat transfer device has a heat transfer medium and is adapted to edit a first Stranggutabschnitt, said first Stranggutabschnitt has a first output temperature, and wherein this heat transfer device is set up to change, in particular, to reduce this first outlet temperature by conducting a heat flow, characterized in that the heat transfer device is adapted to process a second strand section, this second strip section having a second outlet temperature which is less than this first outlet temperature and

wherein said heat transfer medium is adapted to direct said flow of energy to said second wire section and, in particular, to increase said second exit temperature.

Stranggutbearbeitungsvorrichtung according to claim 1, characterized in that

the heat transfer medium is liquid or gaseous. Stranggutbearbeitungsvorrichtung according to one of claims 1 or 2, characterized in that

the heat transfer medium is at least temporarily directly in contact with this first strand section and that

this heat transfer medium is at least temporarily in direct contact with this second strand section.

Stranggutbearbeitungsvorrichtung according to claim 1, characterized in that

the heat transfer medium is guided in a Wärmemediumsleiteinrichtung and that the heat transfer medium is not in direct contact with this first and this second Stranggutabschnitt.

Stranggutbearbeitungsvorrichtung according to claim 1, characterized in that

the heat transfer medium is formed as a solid having a certain geometric structure and that this heat transfer medium is in direct contact with this first and additionally or alternatively with this second Stranggutabschnitt.

Stranggutbearbeitungsvorrichtung according to claim 1 or 5, characterized in that

this heat transfer medium has a substantially rotationally symmetrical design, in particular a roller-like design, this design having a circular cross-sectional area, perpendicular to this cross-sectional area has a longitudinal extent and a substantially cylindrical, circumferential surface surrounding this cross-sectional area. Stranggutbearbeitungsvorrichtung according to claim 6, characterized in that

this substantially cylindrical lateral surface has a groove-like indentation, wherein this groove-like indentation is designed to guide this first or the second extruded portion at least in sections.

Stranggutbearbeitungsvorrichtung according to claim 7, characterized in that

this heat transfer medium has a first groove-like indentation for guiding this first strand section and a second groove-like indentation for guiding this second strand section.

Stranggutbearbeitungsvorrichtung according to any one of claims 5 to 8, characterized in that

this first Stranggutabschnitt this heat transfer medium wraps around with a first Drahtumschlingungswinkel α and that this second Stranggutabschnitt this heat transfer medium wraps around with a second Drahtumschlingungswinkel ß.

Stranggutbearbeitungsvorrichtung according to claim 9, characterized in that

these first and second wire wrap angles are different, preferably this first wire wrap angle is less than this second wire wrap angle. Stranggutbearbeitungsvorrichtung according to any one of claims 5 to 10, characterized in that

a first quantity of heat Q1 can be transferred to this heat transfer medium from this first strand section,

a second quantity of heat QU can be transferred from this heat transfer medium to this second strand portion,

that Q1 is substantially equal to QU,

that this heat quantity Ql is influenced by this wire wrap angle α and QU from this wire wrap angle β,

that in the transmission of the heat quantity Ql a constant K and in the

Transmission of the heat quantity QU sets a constant L and

that essentially:

α ^* K = β * L.

Stranggutbearbeitungsvorrichtung according to any one of claims 5 to 11, characterized in that

the heat transfer device has at least one of these heat transfer media and,

that the axis of rotation of this heat transfer medium is aligned orthogonal to a direction of movement of this first or second strand section,

Furthermore, this device has a deflection device, wherein this deflection device is configured substantially as a roller device, wherein a rotation axis of this deflection relative to the axis of rotation of the heat transfer device is skewed and one of these Stranggutabschnitte (first or second Stranggutabschnitt) alternately contact this heat transfer device and this deflection , Stranggutbearbeitungsvorrichtung according to any one of claims 5 to 11, characterized in that

this axis of rotation of this heat transfer device is arranged askew to this direction of movement of this first or second strand section.

Stranggutbearbeitungsvorrichtung according to any one of the preceding claims, characterized in that

this has a plurality of heat transfer means, said heat transfer means are arranged one behind the other in the direction of movement of this elongated strand, so that this elongated strand material during processing passes through this plurality of heat transfer devices in succession.

Method for operating a strand processing device according to claim 1, characterized in that

this method comprises the steps

Directing at least part of this energy flow to this heat transfer medium,

Supplying at least a portion of this energy stream, to this second strand portion.