EP2293891A1 - Lingotière pour la coulée de métal - Google Patents

Lingotière pour la coulée de métal

Info

Publication number
EP2293891A1
EP2293891A1 EP09768964A EP09768964A EP2293891A1 EP 2293891 A1 EP2293891 A1 EP 2293891A1 EP 09768964 A EP09768964 A EP 09768964A EP 09768964 A EP09768964 A EP 09768964A EP 2293891 A1 EP2293891 A1 EP 2293891A1
Authority
EP
European Patent Office
Prior art keywords
mold
module
mold according
recess
temperature measuring
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.)
Granted
Application number
EP09768964A
Other languages
German (de)
English (en)
Other versions
EP2293891B1 (fr
Inventor
Stephan Schulze
Dirk Lieftucht
Uwe Plociennik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Siemag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2293891A1 publication Critical patent/EP2293891A1/fr
Application granted granted Critical
Publication of EP2293891B1 publication Critical patent/EP2293891B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

  • 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.
  • 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.
  • 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.
  • 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 - achieved results.
  • the great advantage of the solution according to the invention is that the structural unit, that is to say the module with the temperature tower measuring devices arranged therein, can be pre-assembled by the manufacturer in the workshop before installation of the entire mold.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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. taken from the cold side into a wall of the mold or mounted on this.
  • 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 by a plate-shaped cover is preferably closed again flush with the outer surface of the wall of the mold. 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. be designed as a thermocouple or as a fiber optic temperature sensor, 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 measurement 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 each have different depths in the module or in the mold. protrude.
  • the temperature gauge recesses in the module are accordingly formed differently deep.
  • the Temperaturmess adopteds 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 when inserting into the module or in the groove are accessible and a contact of the measuring tip with the bottom or bottom of the Temperaturmess annoyings- recess can be ensured.
  • thermocouples When thermocouples are used, their measuring tips are advantageously soldered to the bottom of the grooves in order to guarantee optimum contact and heat transfer as well as exact positioning.
  • the temperature measuring devices are fixed in the temperature measuring device 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. In this case, a thread with a conical outlet is to be provided on the temperature measuring device 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 cuboid or stepped cuboid shape of the module is particularly suitable for this purpose.
  • Electrode 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 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 device or a regulating device via the central plugs - if appropriate with the interposition of the higher-order central plug.
  • Figure 1 shows 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;
  • Figure 2 shows a first embodiment of the structural unit according to the invention in three different perspectives
  • Figure 3 shows the first embodiment of the structural unit according to the invention in a variant with central plug
  • Figure 4 shows a second embodiment (stepped) for the structural unit according to the invention
  • Figure 5 is a mold for round, rectangle and square
  • Figure 6 is a mold for beam blank
  • Figure 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.
  • the modules 500 and 500 ' are shown differently long in FIG. 1 a). This shows that the structural units with a different number of thermocouples can be provided in one and the same wall 100 of a mold.
  • Figure 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.
  • Figure 1 c) shows a cross section through the wall 100 of the mold according to Figure 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 cuboid, 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 side walls 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 can 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 1 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 exemplary embodiment of the module or structural unit according to FIG. 2 supplemented with a central plug 600 on the module 400.
  • All connection cables 330 of the thermocouples 300 on the module 400 can be connected to the central plug 600 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.
  • Figure 4 shows a second embodiment of the module according to the invention, here in the form of a stepped design.
  • the step is partially traversed in Figure 4 in the form of vertical lines, partially dash-dotted each indicated by the reference symbol S.
  • the step in FIG. 1 a) can be seen particularly clearly.
  • Figure 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. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne une lingotière pour la coulée de métal, avec une pluralité de dispositifs de mesure thermique (300) qui sont disposés dans une paroi (100) de la lingotière, afin d'y détecter la distribution de la température. Afin de simplifier l'installation de la pluralité de dispositifs de mesure thermique dans la paroi et d'augmenter la fiabilité des résultats des mesures, l'invention propose de disposer les dispositifs de mesure thermique (300) dans un module (400), dans des positions fixes entre eux, si bien que les dispositifs de mesure thermique forment avec le module une unité de construction qui peut être préfabriquée avant l'installation de la lingotière. Lors du montage de la lingotière, l'unité de construction est ensuite fixée dans ou sur la paroi de la lingotière.
EP09768964.0A 2008-06-25 2009-06-23 Lingotière pour la coulée de métal Active EP2293891B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008029742A DE102008029742A1 (de) 2008-06-25 2008-06-25 Kokille zum Gießen von Metall
PCT/EP2009/004504 WO2009156115A1 (fr) 2008-06-25 2009-06-23 Lingotière pour la coulée de métal

Publications (2)

Publication Number Publication Date
EP2293891A1 true EP2293891A1 (fr) 2011-03-16
EP2293891B1 EP2293891B1 (fr) 2014-12-24

Family

ID=41050447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09768964.0A Active EP2293891B1 (fr) 2008-06-25 2009-06-23 Lingotière pour la coulée de métal

Country Status (11)

Country Link
US (1) US8162030B2 (fr)
EP (1) EP2293891B1 (fr)
JP (1) JP5579174B2 (fr)
KR (1) KR101257721B1 (fr)
CN (1) CN102076442B (fr)
CA (1) CA2728866C (fr)
DE (1) DE102008029742A1 (fr)
RU (1) RU2448804C1 (fr)
TW (1) TWI454325B (fr)
UA (1) UA95591C2 (fr)
WO (1) WO2009156115A1 (fr)

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DE102010008480A1 (de) * 2009-09-30 2011-03-31 Sms Siemag Ag Kokille zur Verarbeitung von flüssigem metallischem Material
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BE1026740B1 (fr) * 2019-06-21 2020-05-28 Ebds Eng Sprl Procédé pour équilibrer un écoulement d'acier liquide dans une lingotière et système de coulée continue d'acier liquide
EP4005697B1 (fr) * 2020-11-27 2024-04-10 Primetals Technologies Austria GmbH Dispositif et procede pour determiner la temperature dans une paroi laterale d'un moule de fonderie
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Title
See references of WO2009156115A1 *

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TWI454325B (zh) 2014-10-01
TW201016346A (en) 2010-05-01
CN102076442A (zh) 2011-05-25
UA95591C2 (ru) 2011-08-10
CA2728866A1 (fr) 2009-12-30
WO2009156115A1 (fr) 2009-12-30
US20110186262A1 (en) 2011-08-04
CN102076442B (zh) 2014-04-30
JP5579174B2 (ja) 2014-08-27
KR20110017894A (ko) 2011-02-22
CA2728866C (fr) 2013-01-22
EP2293891B1 (fr) 2014-12-24
US8162030B2 (en) 2012-04-24
KR101257721B1 (ko) 2013-04-24
RU2448804C1 (ru) 2012-04-27
DE102008029742A1 (de) 2009-12-31
JP2011525426A (ja) 2011-09-22

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