EP2836319B1 - Giessrad - Google Patents

Giessrad Download PDF

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Publication number
EP2836319B1
EP2836319B1 EP13715119.7A EP13715119A EP2836319B1 EP 2836319 B1 EP2836319 B1 EP 2836319B1 EP 13715119 A EP13715119 A EP 13715119A EP 2836319 B1 EP2836319 B1 EP 2836319B1
Authority
EP
European Patent Office
Prior art keywords
casting wheel
casting
profiling
grooves
wheel according
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.)
Not-in-force
Application number
EP13715119.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2836319A1 (de
Inventor
Christof Dratner
Frank Böert
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.)
Cunova GmbH
Original Assignee
KME Germany GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KME Germany GmbH and Co KG filed Critical KME Germany GmbH and Co KG
Publication of EP2836319A1 publication Critical patent/EP2836319A1/de
Application granted granted Critical
Publication of EP2836319B1 publication Critical patent/EP2836319B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels
    • 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
    • B22D11/005—Continuous casting of metals, i.e. casting in indefinite lengths of wire
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel

Definitions

  • the invention relates to a casting wheel for producing strands of metals or metal alloys according to the features in the preamble of patent claim 1.
  • a casting wheel has a circumferential casting throat, which is bounded on a partial circumference of the casting wheel to the outside by a circulating belt.
  • the band is made of steel.
  • the G mankohle is cooled by spraying with a cooling fluid, in particular with water.
  • Such casting wheels are z. B. used in wire production to liquid non-ferrous metal such.
  • the casting wheel rotates about its central axis of rotation, with the endless steel belt covering the pouring throat over an area approximately equal to 3 ⁇ 4 of its circumferential length.
  • a U-shaped channel is formed by the G demhle and the band, which is open at both ends upwards.
  • liquid non-ferrous metal is poured into it.
  • the non-ferrous metal introduced into the casting channel solidifies on the outer surface during half to three quarters of a turn of the casting wheel and then leaves the casting channel at the
  • Another problem is that because of the often insufficiently filtered cooling fluid, usually it is cooling water, and due to the evaporation of the cooling water on the hot surface of the casting wheel deposits form. By these deposits, the heat dissipation with increasing thickness of the deposits is reduced more and more.
  • the GB 787 932 A discloses a casting wheel, which is provided on its side remote from the casting throat with radially inwardly directed ribs to increase the heat exchange surface.
  • the DE 21 52 261 A1 relates to a casting wheel, wherein contact surfaces between the rim and the hub of the casting wheel are to be kept to a minimum in order to use the grooves provided on the circumference of the wheel rim or the hub to cool the wheel rim.
  • the wheel rim is sprinkled.
  • the DE 10 2008 017 432 A1 discloses a casting mold for making strands of non-ferrous metal. It is proposed to attach a non-releasably connected to the mold coating in the casting area. The coating is said to have a thermal insulating effect between the casting throat and the liquid non-ferrous metal to increase the die cutting time of the casting mold as compared to bare surfaces.
  • the invention has for its object to provide a casting wheel, with which it is possible to realize a high heat dissipation, and which also offers the possibility to rework the G tellkehle multiple times.
  • the casting wheel according to the invention for producing strands of metals or metal alloys has a circumferential casting throat, which is delimited over a partial length by a circulating belt. Below the pouring throat, a sole is provided to be cooled with a cooling liquid.
  • the gutter facing away from the inside of the sole is provided according to the invention with a profiling having a profile height of only 0.5 mm to 6 mm, in particular, the profile height is in a range of 0.5 mm to 3 mm.
  • the profiling has a profile height of a maximum of 2 mm.
  • the profiling is designed so that the largest possible surface results.
  • the profiling can therefore not only extend in the region of the inside of the casting wheel, but also on the outer sides of the flanks, between which the G discernkehle is located. As a result, the profiled surface is increased overall.
  • the radial end faces of the sole can also be provided with such a profiling.
  • the profiling is formed by a plurality of grooves. These grooves should extend circumferentially due to the ease of machining in the circumferential direction of the casting wheel.
  • the preparation can be done by screwing in the grooves.
  • the profiling itself should be maximized in terms of its surface area.
  • the profiling is preferably a serrated or wavy profile. If the profiling is too delicate, the individual grooves can become clogged so that the surface coming into contact with the cooling liquid decreases again. Therefore, the grooves should preferably have an opening angle of 15 ° to 90 °. In particular, the opening angle is 45 ° to 60 °. On the one hand, such grooves can be made easier than grooves with mutually parallel side walls. On the other hand, hardly occur capillary forces at the mentioned opening angles, so that the cooling liquid is not drawn into the grooves and remains there, but is constantly replaced. The heat is dissipated better.
  • the regions of the sole and / or the flanks of the casting wheel which are acted on by the cooling liquid are provided with a coating which protects the casting wheel from deposits of the cooling liquid.
  • the coating may be an anti-adhesive coating.
  • the coating contains silicon, aluminum or titanium compounds.
  • they are so-called nano-coatings or lotus-effect coatings with layer thicknesses between 4 ⁇ m and 10 ⁇ m.
  • a nano-coating is understood to mean structures whose molecules move on a size scale below 100 nanometers.
  • a small layer thickness of the order of magnitude of 4 ⁇ m to 10 ⁇ m is a prerequisite for ensuring a good heat transfer in the application according to the invention.
  • the application of a nano-coating is preferably carried out by spraying or painting / brushing.
  • the painting can also be done by a dipping process.
  • the liquid nano-coating is converted into a solid nano-coating by curing.
  • the cured nano-coating has a smooth and closed surface.
  • the requirement for a smooth surface is also to reduce the roughness of the surface of the casting wheel in the areas concerned.
  • a roughness is set between 2 ⁇ m and 5 ⁇ m.
  • the surface properties of the casting wheel can be significantly improved, whereby the influence on the thermal conductivity is negligible.
  • the essential advantage of the coating is that contaminants or lime contained in the cooling liquid do not settle on the coated surfaces, but are rinsed off the surface by the flow of the cooling liquid. It uses a self-cleaning effect of the surface.
  • the figure shows a schematic representation of a cross section through a casting wheel 1, of which, due to the rotationally symmetrical design, only one casting throat is shown.
  • the illustrated section of the casting wheel 1 thus shows a casting throat 2, which serves to receive liquid metals or metal alloys.
  • the G tellkhle 2 is covered by a band 11 over a portion of the circumference of the casting wheel 2 until the molten metal received therein is at least externally solidified and therefore exits the casting wheel as a solid strand.
  • the area below the G tellkehle 2 is referred to as sole 3.
  • the sole 3 has two radially outwardly facing flanks 4, 5, between which the casting groove 2, which is essentially trapezoidal in cross-section, is located.
  • the contouring of the casting throat 2 is purely exemplary.
  • the profiling 6 is shown enlarged in the lower part of the figure.
  • the profiling 6 has a profile height in a range of 0.5 mm to 6 mm, preferably in a range of 0.5 mm to 3 mm. In this embodiment, the profile height is 1 mm.
  • the profile width B is 2 mm.
  • the profiling 6 is designed as a serrated profile, because a plurality of identically configured grooves are arranged side by side.
  • the grooves 8 each have an opening angle W of 90 °.
  • the angle W is preferably in a range of 15 ° to 90 °, in particular in a range of 45 ° to 60 °.
  • the inside 7 of the sole 3 is acted upon in a manner not shown with a cooling liquid.
  • the cooling liquid is sprayed on the inside 7.
  • the profiling 6 ensures an enlargement of the surface in the region of the inner side 7, so that the heat flow Q from the cast strand into the cooling liquid due to the proportionality to the surface A of the profiling 6.
  • the casting wheel 1 is provided in the region of the profiles 6, 6a, 6b with a coating which prevents settling of the cooling fluid. It is in particular an anti-adhesive coating.
  • the coating may in particular be a so-called nano-coating containing silicon, aluminum or titanium compounds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP13715119.7A 2012-04-13 2013-02-22 Giessrad Not-in-force EP2836319B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012007312A DE102012007312A1 (de) 2012-04-13 2012-04-13 Gießrad
PCT/DE2013/000095 WO2013152746A1 (de) 2012-04-13 2013-02-22 Giessrad

Publications (2)

Publication Number Publication Date
EP2836319A1 EP2836319A1 (de) 2015-02-18
EP2836319B1 true EP2836319B1 (de) 2017-07-05

Family

ID=48082797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13715119.7A Not-in-force EP2836319B1 (de) 2012-04-13 2013-02-22 Giessrad

Country Status (7)

Country Link
US (1) US20150068700A1 (enrdf_load_stackoverflow)
EP (1) EP2836319B1 (enrdf_load_stackoverflow)
CN (1) CN103917312A (enrdf_load_stackoverflow)
DE (1) DE102012007312A1 (enrdf_load_stackoverflow)
ES (1) ES2636462T3 (enrdf_load_stackoverflow)
IN (1) IN2014KN02428A (enrdf_load_stackoverflow)
WO (1) WO2013152746A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105364036A (zh) * 2015-12-15 2016-03-02 德阳九鼎智远知识产权运营有限公司 结晶轮
CN105382225A (zh) * 2015-12-15 2016-03-09 德阳九鼎智远知识产权运营有限公司 结晶轮装配结构
RU2712683C1 (ru) * 2019-10-10 2020-01-30 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Кристаллизатор для непрерывного литья заготовки

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE542505A (enrdf_load_stackoverflow) * 1954-11-02
US3279000A (en) * 1963-12-30 1966-10-18 Southwire Co Apparatus for continuous casting of metal
US3311955A (en) * 1965-01-06 1967-04-04 Southwire Co Disposable mold member for casting machine
FR1590702A (enrdf_load_stackoverflow) * 1968-09-25 1970-04-20
US3536126A (en) * 1968-10-23 1970-10-27 Southwire Co Casting machine with lightweight casting wheel
FR2112091B2 (enrdf_load_stackoverflow) * 1970-10-23 1973-11-23 Spidem Ste Nle
US4287934A (en) * 1977-12-14 1981-09-08 Southwire Company Continuous casting mold
US4211271A (en) * 1977-12-14 1980-07-08 Southwire Company Continuous casting mold geometry improvement
FR2412370A1 (fr) * 1977-12-22 1979-07-20 Pechiney Aluminium Anneau pour roue de machine de coulee
FR2505690A1 (fr) * 1981-05-15 1982-11-19 Ugine Aciers Procede et dispositif de coulee continue sur roue a gorge
DE3623937A1 (de) * 1986-07-16 1988-01-21 Didier Werke Ag Feuerfeste kanalverbindung zum ueberfuehren von stahlschmelze in giessrad-stranggiessmaschinen
US4957155A (en) * 1988-08-04 1990-09-18 Zdenek Trnka Cooling system for continuous casting machines
NO20020492A (no) * 2002-01-30 2003-05-05 Heggset Eng As Støpehjul for kontinuerlig støping av metall
DE102008017432A1 (de) * 2008-04-03 2009-10-08 Kme Germany Ag & Co. Kg Gießform

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20150068700A1 (en) 2015-03-12
EP2836319A1 (de) 2015-02-18
CN103917312A (zh) 2014-07-09
ES2636462T3 (es) 2017-10-05
IN2014KN02428A (enrdf_load_stackoverflow) 2015-05-01
DE102012007312A1 (de) 2013-10-17
WO2013152746A1 (de) 2013-10-17

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