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, wherein the endlessly circulating steel strip covers the pouring throat over an area which approximately corresponds to Z A of its circumferential length.
• a U-shaped channel is formed by the G demkhle 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 other end as a strand.
• 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 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 °.
• such grooves can be made easier than grooves with mutually parallel side walls.
• 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 acted upon by the cooling liquid can be 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.
• these 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 on the order 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 respectively.
• 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 between 2 ⁇ and 5 ⁇ is set.
• 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 limescale 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 by means of a belt 11 over a portion of the circumference covered 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.
• Further profiles 6a, 6b are formed on the outer sides 9, 10 of the flanks 4, 5.
• the profiles 6a, 6b are configured there exactly the same as on the inside 7 of the sole 3. Also in this area, a significantly higher heat flow can be realized, which is due to the increase in the respective surfaces.
• a decisive advantage of the inventively designed surfaces of the casting wheel 1 is that the casting wheel can be reworked with increasing wear, without the profiling 6, 6a, 6b would have a disturbing influence.
• the profiling 6, 6a, 6b is in relation to the Dimensions of the casting wheel 1 so small, but still so effective that the profiling 6, 6a, 6b exclusively improves the functioning of the casting wheel, without standing in the way of any reworking.
• 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.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Molds, Cores, And Manufacturing Methods Thereof (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

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Family Applications (1)

Country Status (7)

Families Citing this family (3)

Citations (7)

Family Cites Families (7)

• 2012
  • 2012-04-13 DE DE102012007312A patent/DE102012007312A1/de not_active Withdrawn
• 2013
  • 2013-02-22 EP EP13715119.7A patent/EP2836319B1/de not_active Not-in-force
  • 2013-02-22 CN CN201380003767.3A patent/CN103917312A/zh active Pending
  • 2013-02-22 US US14/391,649 patent/US20150068700A1/en not_active Abandoned
  • 2013-02-22 ES ES13715119.7T patent/ES2636462T3/es active Active
  • 2013-02-22 WO PCT/DE2013/000095 patent/WO2013152746A1/de not_active Ceased
  • 2013-02-22 IN IN2428KON2014 patent/IN2014KN02428A/en unknown

Patent Citations (7)

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