EP2293891B1 - Mould for casting metal - Google Patents
Mould for casting metal Download PDFInfo
- Publication number
- EP2293891B1 EP2293891B1 EP09768964.0A EP09768964A EP2293891B1 EP 2293891 B1 EP2293891 B1 EP 2293891B1 EP 09768964 A EP09768964 A EP 09768964A EP 2293891 B1 EP2293891 B1 EP 2293891B1
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- EP
- European Patent Office
- Prior art keywords
- module
- mould
- temperature measuring
- recess
- wall
- 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.)
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- 238000005266 casting Methods 0.000 title claims description 9
- 239000002184 metal Substances 0.000 title description 3
- 229910052751 metal Inorganic materials 0.000 title description 3
- 238000001816 cooling Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000003628 erosive effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000000253 optical time-domain reflectometry Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 238000009529 body temperature measurement Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005058 metal casting Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
- B22D11/182—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
- B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
- B22D11/202—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level by measuring temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
- B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal
Definitions
- thermocouples individually in each case provided for them individual holes in the mold.
- the individual thermocouples are pressed with a spring force against the bottom of the hole to ensure there the contact of their measuring points with the mold material.
- the thermocouples are inserted into the mold plate at different depths. This is particularly useful for determining the heat flux density in the mold plate.
- the invention has the object, a known mold for casting metal with a plurality of temperature measuring devices to the effect that the cost of installation of the plurality of temperature measuring devices is reduced, but at the same time a high reliability and validity of the knife is maintained.
- the wall of the mold has a recess for receiving the structural unit. It should be noted that the best possible heat transfer between the structural unit and the material of the mold is guaranteed. On the one hand, it is important for the depth of the recess to be matched to the depth or height of the module and, in particular, for the best possible large area between the base or the wall of the recess in the mold and the surface of the module or the measuring tips of the measuring devices Contact is formed to ensure optimum heat transfer between the module and mold wall. The heat transfer can be improved, for example, by the use of a thermal grease, which, however, must withstand the high temperatures that occur in the mold during casting in the mold.
- the structural unit is e.g. from the cold side into a wall of the mold or mounted on this: So that the structural unit does not affect the flow of coolant in the cooling channels of the mold wall, the structural unit is mounted in this case between two adjacent cooling channels.
- the recess for the structural unit as a lateral, preferably horizontal, hole in the wall of the mold between the hot side and the bottom of the cooling channels is formed.
- the recess after installation of the structural unit is closed by a plate-shaped cover, preferably flush with the outer surface of the wall of the mold again. Then a heat flow through the cover is possible.
- the module or the structural unit and the recess in the cold side of the mold are preferably in the thickness direction of the mold wall, i. transverse to the casting direction or from the cold to the hot side, stepped.
- the grading advantageously ensures a stabilization of the module or the structural unit in the mold against tilting.
- Temperaturmess Rosaceas
- the temperature measuring device is arranged in the temperature measuring device recess such that its measuring tip or its measuring tips makes contact with the base or the wall of the recess.
- the temperature measuring device may e.g. as a thermocouple or as a fiber optic. Temperature sensor may be formed, the latter allows a temperature measurement by means of the optical time domain reflectometry OTDR method or the Fiber Bragg Grating FBG method.
- the fiber optic temperature sensors are very thin; This has the advantage that many temperature measuring points can be arranged close to each other without their signals or measurement results mutually influencing and falsifying.
- the temperature measuring devices are arranged in pairs in the module, wherein the two temperature measuring devices, in particular thermocouples of a pair preferably protrude at different depths into the module or in the mold.
- the temperature gauge recesses in the module are accordingly formed differently deep.
- the temperature measuring devices are fixed in the temperature gauge recesses in the module.
- the fixation can be done by gluing or clamping the temperature measuring devices in the corresponding recesses.
- gluing is advantageously high heat-resistant resin, eg. B. Strain gauge DMS resin used.
- the temperature measuring device can also be clamped in the temperature measuring device recess, in the case of thermocouples for example by means of an annular cone screw.
- a thread with a conical spout is provided on the Temperaturmess issueds recess.
- the thermocouple is passed through the annular cone, preferably made of copper, with external thread. This cone or cone screw clamps the thermocouple then when screwing and pressed it by the screw at the same time to the bottom of the hole.
- the module and its thermocouple recesses or holes is produced by erosion.
- the said quarter-shaped or stepped quartz-shaped form of the module is particularly suitable for this purpose.
- the manufacturing process "eroding offers the advantage that bore burrs and Bore cone can be avoided, while maintaining very precise compliance or realization of the desired hole depth.
- the one-time clamping of a component during erosion to produce a larger number of holes, the cost of erosion can be kept within limits.
- the module is preferably made of the same material as the mold itself.
- a central plug for the connection cables of the thermocouples on the module.
- a central plug can be designed as a pure multi-pin connector or as a multiplexer.
- the central plug can also be designed as a bus interface or bus module, for example a fieldbus module. Then the central plug would be able to convert the signals of the thermocouples into a bus format.
- the bus interface or bus module should also be able to convert the conversion in the reverse direction, that is, from the bus format to a format for an actuator signal.
- thermocouples can be connected to a suitable evaluation or a control device.
- FIG. 1 a shows the cold side of a mold, more precisely a (side) wall 100 of the mold in a plan view.
- the recesses 120 and thus also the structural units 500 or 500 ', if installed therein, are each arranged between two adjacent cooling channels.
- FIG. 1 b) shows a section through the wall 100 of the mold according to Figure a) in the casting direction. It can be seen the recess 120 'for the structural unit and the cooling channel 200. The bottom of the recess 120 reaches very close to the hot side H of the mold wall 100 zoom. In this way, it is ensured that the thermocouples actually detect the temperature distribution in the vicinity of the hot side H of the mold in the most realistic manner possible.
- FIG. 1c) shows a cross section through the wall 100 of the mold according to FIG. 1 a) transverse to the casting direction.
- This figure clearly shows the different cross-sections for the recesses 120 in the depth of the mold wall 100: strictly quarry-shaped, not stepped, according to a first embodiment 120 or stepped according to a second embodiment.
- the width of the recess 120 'or the structural unit 500' tapers in the region of greater depths. Due to this grading a greater rigidity of the structural unit is achieved when installed in the recess.
- FIG. 2 illustrates the first embodiment for the structural unit 500.
- the temperature gauge recesses 420 for the thermocouples 300 in the module 400 are exemplified in the form of grooves on the sidewalls of the module.
- the formation of the grooves on the side edges has the advantage that the thermocouples are accessible after insertion into the grooves;
- the measuring tip 310 of the thermocouples 300 may be soldered to the bottom of the groove.
- the thermocouples are arranged in pairs opposite one another. The thermocouples involved in such a pair protrude at different depths into the module; Compare the distances A and B respectively between the measuring tips 310 of the thermocouples and the hot-side boundaries H 'of the modules. These different distances A and B are required for a reliable calculation of the heat flux density in the mold wall.
- FIG. 3 shows the first embodiment of the module or the structural unit according to FIG. 2 supplemented with a central plug 600 on the module 400.
- a central plug 600 To the central plug 600 all connection cables 330 of the thermocouples 300 can be connected to the module and bundled. It allows the transmission of the signals of all thermocouples via preferably only a single, but possibly multi-core output cable 700.
- the central connector may be formed, for example in the form of a multi-pin connector.
- the plug can also be designed as a multiplexer.
- the central plug can also be designed as a bus interface and the cable 700 as a bus line.
- the bus interface also called bus module, is then designed to convert the signals of the thermocouples into the format or protocol of the particular bus used.
- FIG. 4 shows a second embodiment of the module according to the invention, here in the form of a stepped version.
- the stage is in FIG. 4 each partially traversed in the form of vertical lines, partially indicated by dashed lines in each case with the reference symbol S. Especially vivid is the level in FIG. 1 a) to recognize.
- FIG. 5 shows a measuring arrangement of a mold for round, rectangle and square.
- FIG. 6 shows a measuring arrangement of a mold for Beam Blank.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
Die Erfindung betrifft eine Kokille zum Gießen von Metall mit einer Mehrzahl von Temperaturmesseinrichtungen, die in einer Wand in der Kokille angeordnet sind zum Erfassen der Temperaturverteilung in der Wand während des Gießbetriebs.The invention relates to a mold for casting metal with a plurality of temperature measuring devices, which are arranged in a wall in the mold for detecting the temperature distribution in the wall during the casting operation.
Eine derartige Kokille mit einer Mehrzahl von Temperaturmesseinrichtungen ist im Stand der Technik bekannt und zum Beispiel in der internationalen Patentanmeldung
Die erwähnte Art der individuellen Montage jedes einzelnen Thermoelementes in der Kokillenplatte erfordert einen hohen Installationsaufinrand. Der Anschluß der Thermoelemente erfolgt typischerweise über eine separate Harting-Kupplung. Bei der Installation wird die Kupplung oft versehentlich beschädigt, woraufhin eine aufwendige Rekonstruktion der korrekten Anschlussweise vorzunehmen ist. Problematisch ist die Positionierung der Thermoelemente zueinander. Bei einem Abstand von zum Beispiel nur 10 mm führt eine Abweichung der Bohrungstiefe und damit der Position der Messspitzen der Thermoelemente in Tiefenrichtung von nur 1 mm bereits zu einer zehnprozentigen Abweichung im Messergebnis.The mentioned type of individual mounting of each individual thermocouple in the chill plate requires a high installation height. The connection of the thermocouples typically takes place via a separate Harting coupling. During installation, the coupling is often accidentally damaged, whereupon a complex reconstruction of the correct connection is made. The problem is the positioning of the thermocouples to each other. At a distance of, for example, only 10 mm, a deviation of the bore depth and thus the position of the measuring tips of the thermocouples in the depth direction of only 1 mm already leads to a ten percent deviation in the measurement result.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine bekannte Kokille zum Gießen von Metall mit einer Mehrzahl von Temperaturmesseinrichtungen dahingehend weiterzubilden, dass der Aufwand für die Installation der Mehrzahl von Temperaturmesseinrichtungen verringert wird, aber gleichzeitig eine hohe Zuverlässigkeit und Aussagekraft des Messer gebnisses gewahrt bleibt.Based on this prior art, the invention has the object, a known mold for casting metal with a plurality of temperature measuring devices to the effect that the cost of installation of the plurality of temperature measuring devices is reduced, but at the same time a high reliability and validity of the knife is maintained.
Diese Aufgabe wird durch den Gegenstand des Patentanspruchs 1 gelöst. Dieser ist dadurch gekennzeichnet, dass die Temperaturmesseinrichtungen in einem Modul fest zueinander positioniert angeordnet sind und zusammen mit dem Modul eine bauliche Einheit bilden und dass die bauliche Einheit zum Erfassen der Temperaturverteilung in oder an der Wand der Kokille befestigt ist.This object is solved by the subject matter of
Der große Vorteil bei der erfindungsgemäßen Lösung besteht darin, dass die bauliche Einheit, dass heißt das Modul mit den darin angeordneten Temperaturmesseinrichtungen, bereits vor der Montage der gesamten Kokille in einer Anlage in der Werkstatt beim Hersteller vormontiert werden kann.The great advantage of the solution according to the invention is that the structural unit, that is, the module with the temperature measuring devices arranged therein, can be pre-assembled in a workshop in the workshop before the assembly of the entire mold in the workshop.
Die Vormontage der Temperaturmesseinrichtungen in dem Modul ermöglicht vorteilhafterweise eine freie und genaue Positionierung der Temperaturmesseinrichtungen zueinander, d.h. in einem gewünschten richtigen Abstand zueinander und in der richtigen Tiefe; insbesondere sind die Abstände nicht mehr zwingend durch die Abstände von Befestigungsbolzen, mit denen der Wasserkasten an die Kokille angeschraubt wird und in denen die Temperaturmesseinrichtungen, insbesondere in Form von Thermoelementen, traditionell geführt wurden, definiert. Stattdessen ermöglicht die Vormontage in dem Modul auch eine so kurze Beabstandung der Temperaturmesseinrichtungen bzw. von deren Messspitzen zueinander, z.B. 10 mm, dass eine lückenlose Überwachung des erkaltenden und erstarrenden Strangs in der Kokille im Hinblick auf Längsrissbildung und Durchbruchfrüherkennung über der gesamten Breite des Strangs durch Auswerten der gemessenen Temperaturverteilung möglich ist. Allgemein können durch die freie Positionierung der Temperaturmesseinrichtungen die Abweichungen der Messergebnisse auf ein Minimum reduziert und so die Aussagekraft der Messung erheblich gesteigert werden.The pre-assembly of the temperature measuring devices in the module advantageously allows a free and accurate positioning of the temperature measuring devices to one another, ie at a desired correct distance from each other and at the correct depth; In particular, the distances are no longer necessarily by the distances of fastening bolts, with which the water tank is screwed to the mold and in which the temperature measuring devices, in particular in the form of thermocouples, were traditionally defined. Instead, the pre-assembly in the module allows such a short spacing of the temperature measuring devices or their measuring tips to each other, for example 10 mm, that a complete monitoring of the cooling and solidifying strand in the mold with respect to longitudinal cracking and breakthrough early detection over the entire width of the strand through Evaluation of the measured temperature distribution is possible. In general, the free positioning of the temperature measuring devices can Deviations of the measurement results are reduced to a minimum and thus the significance of the measurement can be significantly increased.
Bei der Endmontage der Kokille ist dann die bauliche Einheit inklusive der Temperaturmesseinrichtungen nur noch als Ganzes in oder an der Wand zu befestigen. Der Installationsaufwand für die Temperaturmesseinrichtungen insbesondere bei der Endmontage der Kokille wird deshalb auf ein Minimum beschränkt.During the final assembly of the mold, the structural unit including the temperature measuring devices is then only to be fastened as a whole in or on the wall. The installation effort for the temperature measuring devices, especially in the final assembly of the mold is therefore limited to a minimum.
Gemäß einem ersten Ausführungsbeispiel der Erfindung weist die Wand der Kokille eine Ausnehmung auf, zur Aufnahme der baulichen Einheit. Dabei gilt es zu beachten, dass ein möglichst optimaler Wärmeübergang zwischen der baulichen Einheit und dem Material der Kokille gewährleistet wird. Dafür ist es zum einen wichtig, dass die Tiefe der Ausnehmung auf die Tiefe bzw. Höhe des Moduls abgestimmt ist und insbesondere zwischen dem Grund oder der Wandung der Ausnehmung in der Kokille und der Oberfläche des Moduls bzw. den Messspitzen der Messeinrichtungen ein möglichst guter großflächiger Kontakt ausgebildet wird, um eine optimale Wärmeübertragung zwischen Modul und Kokillenwand zu gewährleisten. Die Wärmeübertragung kann zum Beispiel durch die Verwendung einer Wärmeleitpaste, die allerdings den hohen Temperaturen, wie sie beim Gießbetrieb in der Kokille auftreten, standhalten muss, verbessert werden.According to a first embodiment of the invention, the wall of the mold has a recess for receiving the structural unit. It should be noted that the best possible heat transfer between the structural unit and the material of the mold is guaranteed. On the one hand, it is important for the depth of the recess to be matched to the depth or height of the module and, in particular, for the best possible large area between the base or the wall of the recess in the mold and the surface of the module or the measuring tips of the measuring devices Contact is formed to ensure optimum heat transfer between the module and mold wall. The heat transfer can be improved, for example, by the use of a thermal grease, which, however, must withstand the high temperatures that occur in the mold during casting in the mold.
Die bauliche Einheit ist z.B. von der Kaltseite her in eine Wand der Kokille eingelassen bzw. auf diese montiert: Damit die bauliche Einheit den Kühlmittelfluss in den Kühlkanälen der Kokillenwand nicht beeinträchtigt, wird die bauliche Einheit in diesem Fall zwischen zwei benachbarten Kühlkanälen montiert.The structural unit is e.g. from the cold side into a wall of the mold or mounted on this: So that the structural unit does not affect the flow of coolant in the cooling channels of the mold wall, the structural unit is mounted in this case between two adjacent cooling channels.
Alternativ ist die Ausnehmung für die bauliche Einheit als seitliche, vorzugsweise horizontale, Bohrung in der Wand der Kokille zwischen deren Heißseite und dem Grund der Kühlkanäle ausgebildet.Alternatively, the recess for the structural unit as a lateral, preferably horizontal, hole in the wall of the mold between the hot side and the bottom of the cooling channels is formed.
Um den Wärmefluß in der Wand der Kokille möglichst wenig zu stören, wird die Ausnehmung nach dem Einbau der baulichen Einheit durch eine plattenförmige Abdeckung vorzugsweise bündig mit der äußeren Oberfläche der Wand der Kokille wieder verschlossen. Dann ist ein Wärmefluss auch durch die Abdeckung möglich.In order to disturb the heat flow in the wall of the mold as little as possible, the recess after installation of the structural unit is closed by a plate-shaped cover, preferably flush with the outer surface of the wall of the mold again. Then a heat flow through the cover is possible.
Das Modul bzw. die bauliche Einheit und die Ausnehmung in der bzw. auf der Kaltseite der Kokille sind vorzugsweise in Dickenrichtung der Kokillenwand, d.h. quer zur Gießrichtung bzw. von der Kalt- zur Heißseite, gestuft ausgebildet. Die Stufung gewährleistet vorteilhafterweise eine Stabilisierung des Moduls bzw. der baulichen Einheit in der Kokille gegen ein Verkippen.The module or the structural unit and the recess in the cold side of the mold are preferably in the thickness direction of the mold wall, i. transverse to the casting direction or from the cold to the hot side, stepped. The grading advantageously ensures a stabilization of the module or the structural unit in the mold against tilting.
Nicht nur die Kaltseite der Kokille weist, wie oben beschrieben, eine Ausnehmung auf, sondern auch das Modul weist seinerseits eine Ausnehmung, nachfolgend Temperaturmesseinrichtungs-Ausnehmung genannt, auf zur Aufnahme von jeweils einer Temperaturmesseinrichtung. Dabei ist die Temperaturmesseinrichtung in der Temperaturmesseinrichtungs-Ausnehmung so angeordnet, dass deren Messspitze bzw. dessen Messspitzen den Grund oder die Wandung der Ausnehmung kontaktiert.Not only the cold side of the mold has, as described above, a recess, but also the module has in turn a recess, hereinafter called Temperaturmesseinrichtungs-recess, for receiving in each case a temperature measuring device. In this case, the temperature measuring device is arranged in the temperature measuring device recess such that its measuring tip or its measuring tips makes contact with the base or the wall of the recess.
Die Temperaturmesseinrichtung kann z.B. als Thermoelement oder als faseroptischer. Temperatursensor ausgebildet sein, wobei letzterer eine Temperaturmessung mittels des optical time domain reflectometry OTDR-Verfahrens oder des Fibre-Bragg-Grating FBG-Verfahrens ermöglicht. Die phaseroptischen Temperatursensoren sind sehr dünn; dies hat den Vorteil, dass viele Temperaturmessstellen nahe beieinander angeordnet werden können, ohne dass sich deren Signale bzw. Messergebnisse gegenseitig beeinflussen und verfälschen.The temperature measuring device may e.g. as a thermocouple or as a fiber optic. Temperature sensor may be formed, the latter allows a temperature measurement by means of the optical time domain reflectometry OTDR method or the Fiber Bragg Grating FBG method. The fiber optic temperature sensors are very thin; This has the advantage that many temperature measuring points can be arranged close to each other without their signals or measurement results mutually influencing and falsifying.
Zum Zwecke einer zuverlässigen Wärmestromdichtemessung sind die Temperaturmesseinrichtungen in dem Modul paarweise angeordnet, wobei die beiden Temperaturmesseinrichtungen, insbesondere Thermoelemente eines Paares vorzugsweise jeweils unterschiedlich tief in das Modul bzw. in die Kokille hineinragen. Die Temperaturmesseinrichtungs-Ausnehmungen in dem Modul sind dementsprechend unterschiedlich tief ausgebildet.For the purpose of a reliable heat flow density measurement, the temperature measuring devices are arranged in pairs in the module, wherein the two temperature measuring devices, in particular thermocouples of a pair preferably protrude at different depths into the module or in the mold. The temperature gauge recesses in the module are accordingly formed differently deep.
Die Temperaturmesseinrichtungs-Ausnehmungen in dem Modul können beispielsweise als Bohrung (gestuft oder nicht gestuft) oder als Nut am Rand des Moduls ausgebildet sein. Die Ausbildung als Nut hat den Vorteil, dass insbesondere auch die Messspitze der Temperaturmesseinrichtung beim Einsetzen in das Modul bzw. in die Nut zugänglich sind und eine Kontaktierung der Messspitze mit dem Grund bzw. dem Boden der Temperaturmesseinrichtungs-Ausnehmung sichergestellt werden kann. Bei Verwendung von Thermoelementen sind deren Messspitzen vorteilhafterweise mit dem Grund der Nuten verlötet, um einen optimalen Kontakt und Wärmeübergang sowie eine exakte Positionierung zu garantieren.The Temperaturmesseinrichtungs recesses in the module can be formed for example as a hole (stepped or not stepped) or as a groove on the edge of the module. The design as a groove has the advantage that in particular the measuring tip of the temperature measuring device are accessible when inserted into the module or in the groove and a contact of the measuring tip with the bottom of the Temperaturmesseinrichtungs-recess can be ensured. When using thermocouples whose measuring tips are advantageously soldered to the bottom of the grooves to guarantee optimum contact and heat transfer and precise positioning.
Die Temperaturmesseinrichtungen sind in den Temperaturmesseinrichtungs-Ausnehmungen in dem Modul fixiert. Die Fixierung kann erfolgen durch Einkleben oder Einklemmen der Temperaturmesseinrichtungen in die entsprechenden Ausnehmungen. Zum Einkleben wird vorteilhafterweise hoch wärmefestes Harz, z. B. Dehnmessstreifen DMS Harz, verwendet. Alternativ kann die Temperaturmesseinrichtung auch in die Temperaturmesseinrichtungs-Ausnehmung eingeklemmt werden, im Falle von Thermoelementen zum Beispiel mit Hilfe einer ringförmigen Kegelschraube. Hierbei ist an der Temperaturmesseinrichtungs-Ausnehmung ein Gewinde mit einem kegelförmigen Auslauf vorzusehen. Das Thermoelement wird durch den ringförmigen Kegel, vorzugsweise aus Kupfer, mit Außengewinde geführt. Dieser Kegel bzw. diese Kegelschraube klemmt das Thermoelement dann beim Einschrauben fest und presst es durch die Schraubrichtung gleichzeitig an den Bohrungsgrund.The temperature measuring devices are fixed in the temperature gauge recesses in the module. The fixation can be done by gluing or clamping the temperature measuring devices in the corresponding recesses. For gluing is advantageously high heat-resistant resin, eg. B. Strain gauge DMS resin used. Alternatively, the temperature measuring device can also be clamped in the temperature measuring device recess, in the case of thermocouples for example by means of an annular cone screw. Here, a thread with a conical spout is provided on the Temperaturmesseinrichtungs recess. The thermocouple is passed through the annular cone, preferably made of copper, with external thread. This cone or cone screw clamps the thermocouple then when screwing and pressed it by the screw at the same time to the bottom of the hole.
Vorteilhafterweise ist das Modul und dessen Thermoelement-Ausnehmungen bzw. Bohrungen durch Erodieren hergestellt. Die besagte quarderförmige bzw. gestuft quarderförmige Form des Moduls ist dafür besonders geeignet. Das Herstellungsverfahren "Erodieren bietet den Vorteil, dass Bohrungsgrate und Bohrungskegel vermieden werden, bei gleichzeitig sehr präziser Einhaltung bzw. Realisierung der gewünschten Bohrungstiefe. Durch das einmalige Spannen eines Bauteils beim Erodieren zur Herstellung einer größeren Anzahl von Bohrungen können die Kosten für das Erodieren in Grenzen gehalten werden.Advantageously, the module and its thermocouple recesses or holes is produced by erosion. The said quarter-shaped or stepped quartz-shaped form of the module is particularly suitable for this purpose. The manufacturing process "eroding offers the advantage that bore burrs and Bore cone can be avoided, while maintaining very precise compliance or realization of the desired hole depth. The one-time clamping of a component during erosion to produce a larger number of holes, the cost of erosion can be kept within limits.
Zur Gewährleistung eines optimalen Wärmeüberganges ist das Modul vorzugsweise aus dem gleichen Material gefertigt wie die Kokille selbst.To ensure optimal heat transfer, the module is preferably made of the same material as the mold itself.
Zur Verbesserung der Übersichtlichkeit der Kabelführung, insbesondere bezüglich der Anschlusskabel der Thermoelemente auf dem Modul, empfiehlt sich die Verwendung eines Zentralsteckers für die Anschlusskabel der Thermoelemente auf dem Modul. Ein derartiger Zentralstecker kann als reine vielfachpolige Steckverbindung oder als Multiplexer ausgebildet sein. Alternativ kann der Zentralstecker auch als Busschnittstelle bzw. Busmodul, zum Beispiel Feldbus-Modul, ausgebildet sein. Dann wäre der Zentralstecker in der Lage, die Signale der Thermoelemente umzuwandeln in ein Bus-Format. Gleichzeitig sollte die Bus-Schnittstelle bzw. das Bus-Modul auch in der Lage sein, die Umwandlung in umgekehrter Richtung, dass heißt vom Bus-Format in ein Format für ein Aktorsignal umzuwandeln. Bei Verwendung einer Mehrzahl von baulichen Einheiten kann es sinnvoll sein, die Zentralstecker auf den einzelnen baulichen Einheiten mit einem übergeordneten Zentralstecker zu verbinden. Bei dieser Schaltungskonfiguration können sowohl die Zentralstecker wie auch der übergeordnete Zentralstecker als Bus-Schnittstellen ausgebildet sein.To improve the clarity of the cable management, in particular with regard to the connection cables of the thermocouples on the module, we recommend the use of a central plug for the connection cables of the thermocouples on the module. Such a central plug can be designed as a pure multi-pin connector or as a multiplexer. Alternatively, the central plug can also be designed as a bus interface or bus module, for example a fieldbus module. Then the central plug would be able to convert the signals of the thermocouples into a bus format. At the same time, the bus interface or bus module should also be able to convert the conversion in the reverse direction, that is, from the bus format to a format for an actuator signal. When using a plurality of structural units, it may be useful to connect the central plug on the individual structural units with a parent central plug. In this circuit configuration, both the central plug and the parent central plug can be designed as bus interfaces.
Über die Zentralstecker - gegebenenfalls unter Zwischenschaltung des übergeordneten Zentralsteckers - können die Thermoelemente an eine geeignete Auswerteeinrichtung oder eine Regeleinrichtung angeschlossen werden.About the central plug - possibly with the interposition of the parent central plug - the thermocouples can be connected to a suitable evaluation or a control device.
Der Beschreibung sind insgesamt 6 Figuren beigefügt, wobei
Figur 1- die Kaltseite einer Kokille mit der Ausnehmung bzw. mit der baulichen Einheit in a) einer Draufsicht, b) einer ersten Queransicht und c) einer zweiten Queransicht;
- Figur 2
- ein erstes Ausführungsbeispiel für die erfindungsgemäße bauliche Einheit in drei verschiedenen Perspektiven;
- Figur 3
- das erste Ausführungsbeispiel der erfindungsgemäßen baulichen Einheit in einer Variante mit Zentralstecker;
- Figur 4
- ein zweites Ausführungsbeispiel (gestuft) für die erfindungsgemäße bauliche Einheit;
- Figur 5
- eine Kokille für Rund, Rechteck und Quadrat; und
- Figur 6
- eine Kokille für Beam Blank
- FIG. 1
- the cold side of a mold with the recess or with the structural unit in a) a top view, b) a first transverse view and c) a second transverse view;
- FIG. 2
- a first embodiment of the structural unit according to the invention in three different perspectives;
- FIG. 3
- the first embodiment of the structural unit according to the invention in a variant with central plug;
- FIG. 4
- a second embodiment (stepped) for the structural unit according to the invention;
- FIG. 5
- a mold for round, rectangle and square; and
- FIG. 6
- a mold for Beam Blank
Die Erfindung wird nachfolgend unter Bezugnahme auf die genannten Figuren in Form von Ausführungsbeispielen detailliert beschrieben. In allen Figuren sind gleiche Elemente mit gleichen Bezugzeichen bezeichnet.The invention will be described in detail below with reference to the said figures in the form of embodiments. In all figures, the same elements are designated by the same reference numerals.
Die
- 100100
- Wand der KokilleWall of the mold
- 120120
-
Ausnehmung für die bauliche Einheit 500Recess for the
structural unit 500 - 120'120 '
- Ausnehmung für die bauliche Einheit 500'Recess for the structural unit 500 '
- 200200
- Kühlkanalcooling channel
- 300300
- Thermoelementthermocouple
- 330330
- Anschlusskabel ThermoelementConnection cable thermocouple
- 400400
- Modulmodule
- 420420
- Aussparung für ThermoelementRecess for thermocouple
- 500500
- bauliche Einheit gemäß erstem AusführungsbeispielBuilding unit according to the first embodiment
- 500'500 '
- bauliche Einheit gemäß zweitem AusführungsbeispielBuilding unit according to the second embodiment
- 600600
- Zentralsteckercentral plug
- 700700
- Ausgangskabeloutput cable
- A, BA, B
- Abständedistances
- SS
- Stufestep
Claims (12)
- Mould for the casting of metal, with a plurality of temperature measuring devices (300), which are arranged in a wall (100) of the mould, for detecting the temperature distribution in the wall during casting operation;
wherein the temperature measuring devices (300) are arranged in a module (400) to be fixed in position relative to one another and form together with the module a constructional unit (500, 500');
wherein the module (400, 400') comprises at least one temperature measuring device recess (420) in the form of a bore or groove for reception of a respective one of the temperature measuring devices; and
wherein the constructional unit (500, 500') for detection of the temperature distribution is fastened in or to the wall (100) of the mould;
characterised in that:the temperature measuring devices are constructed as fibre-optical temperature sensors which enable temperature measurement by means of the Optical Time Domain Reflectometry (OTDR) method or the Fibre Bragg Grating (FBG) method; andthe temperature measuring device recesses (420) are so arranged in the module (400) and constructed that the fibre-optical temperature sensors are arranged in pairs andadjacently in the module and that the individual fibre-optical temperature sensors of a pair are arranged at different depths in or on the module. - Mould according to claim 1, characterised in that the wall (100) of the mould has a recess (120, 120') for reception of the constructional unit (500, 500').
- Mould according to claim 2, characterised in that the recess (120) for the constructional unit (500, 500') is arranged on the cold side of the wall of the mould between the cooling channels (200) thereof.
- Mould according to one of claims 2 and 3, characterised in that the module (400') and the recess (120') is formed to be stepped in the direction from the cold side to the hot side of the mould.
- Mould according to claim 2, characterised in that the recess (120, 120') for the constructional unit (500, 500') is constructed as a lateral, preferably horizontal, bore in the wall of the mould between the hot side thereof and the base of the cooling channels.
- Mould according to any one of claims 2 to 5, characterised in that the recess (120, 120') is closed by a plate-shaped cover, preferably flush with the outer surface of the wall of the mould, after installation of the constructional unit (500, 500').
- Mould according to claim 1, characterised in that the temperature measuring device recess (420) is constructed to be stepped with different diameters as seen over the depth thereof.
- Mould according to any one of the preceding claims, characterised in that the temperature measuring device (300) is so glued or releasably clamped in place in the temperature measuring device recess (420) that the measuring tip or measuring tips (310) of the temperature measuring device (300) contacts or respectively contact the base or the wall of the temperature measuring device recess (420).
- Mould according to any one of the preceding claims, characterised in that the module and the temperature measuring device recesses thereof are produced at least in part by eroding.
- Mould according to any one of the preceding claims, characterised in that the module and/or the cover for closing the recess (120) is or are made of the same material as the mould, for example of copper.
- Mould according to any one of the preceding claims, characterised in that provided in or on the module is a central plug (600) for receiving and grouping the connection lines (330) of all temperature measuring devices (300) on the module (400).
- Mould according to claim 11, characterised in that the central plug is constructed as a multiplexer or as a bus interface or bus module.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008029742A DE102008029742A1 (en) | 2008-06-25 | 2008-06-25 | Mold for casting metal |
PCT/EP2009/004504 WO2009156115A1 (en) | 2008-06-25 | 2009-06-23 | Mould for casting metal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2293891A1 EP2293891A1 (en) | 2011-03-16 |
EP2293891B1 true EP2293891B1 (en) | 2014-12-24 |
Family
ID=41050447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09768964.0A Active EP2293891B1 (en) | 2008-06-25 | 2009-06-23 | Mould for casting metal |
Country Status (11)
Country | Link |
---|---|
US (1) | US8162030B2 (en) |
EP (1) | EP2293891B1 (en) |
JP (1) | JP5579174B2 (en) |
KR (1) | KR101257721B1 (en) |
CN (1) | CN102076442B (en) |
CA (1) | CA2728866C (en) |
DE (1) | DE102008029742A1 (en) |
RU (1) | RU2448804C1 (en) |
TW (1) | TWI454325B (en) |
UA (1) | UA95591C2 (en) |
WO (1) | WO2009156115A1 (en) |
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-
2008
- 2008-06-25 DE DE102008029742A patent/DE102008029742A1/en not_active Withdrawn
-
2009
- 2009-06-23 CA CA2728866A patent/CA2728866C/en active Active
- 2009-06-23 JP JP2011515186A patent/JP5579174B2/en active Active
- 2009-06-23 WO PCT/EP2009/004504 patent/WO2009156115A1/en active Application Filing
- 2009-06-23 UA UAA201100810A patent/UA95591C2/en unknown
- 2009-06-23 RU RU2011102580/02A patent/RU2448804C1/en active
- 2009-06-23 CN CN200980124233.XA patent/CN102076442B/en active Active
- 2009-06-23 KR KR1020107029530A patent/KR101257721B1/en active IP Right Grant
- 2009-06-23 EP EP09768964.0A patent/EP2293891B1/en active Active
- 2009-06-23 US US13/001,447 patent/US8162030B2/en active Active
- 2009-06-24 TW TW098121099A patent/TWI454325B/en active
Also Published As
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TW201016346A (en) | 2010-05-01 |
KR101257721B1 (en) | 2013-04-24 |
CA2728866A1 (en) | 2009-12-30 |
WO2009156115A1 (en) | 2009-12-30 |
CA2728866C (en) | 2013-01-22 |
UA95591C2 (en) | 2011-08-10 |
TWI454325B (en) | 2014-10-01 |
DE102008029742A1 (en) | 2009-12-31 |
CN102076442B (en) | 2014-04-30 |
KR20110017894A (en) | 2011-02-22 |
CN102076442A (en) | 2011-05-25 |
US8162030B2 (en) | 2012-04-24 |
JP2011525426A (en) | 2011-09-22 |
JP5579174B2 (en) | 2014-08-27 |
RU2448804C1 (en) | 2012-04-27 |
EP2293891A1 (en) | 2011-03-16 |
US20110186262A1 (en) | 2011-08-04 |
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