EP1345717A1 - Mantelring für eine giessrolle einer bandgiessmaschine - Google Patents
Mantelring für eine giessrolle einer bandgiessmaschineInfo
- Publication number
- EP1345717A1 EP1345717A1 EP01988076A EP01988076A EP1345717A1 EP 1345717 A1 EP1345717 A1 EP 1345717A1 EP 01988076 A EP01988076 A EP 01988076A EP 01988076 A EP01988076 A EP 01988076A EP 1345717 A1 EP1345717 A1 EP 1345717A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material layer
- ring
- jacket
- ring according
- cst
- 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
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
- B22D11/06—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
Definitions
- the invention relates to a jacket ring for a casting tube of a band casting machine, which forms an end face on each side, which serves to enable a side seal of the band casting machine to be placed thereon, the jacket ring being produced from a base material containing metal.
- a generic GiessroUe according to the document DE-A-41 41 484 is formed with a cooling surface, which is composed of a good heat-conducting base metal and a metal applied thereon, the metal applied having a lower thermal conductivity. ability as the base metal.
- the base metal elevations distributed over its surface are also provided, between which the metal is distributed.
- the base metal should advantageously consist of copper or a copper alloy, but the applied metal should consist of nickel or a nickel alloy. With this coating, however, an optimal surface with regard to its wear resistance is not achieved. In particular, there is also insufficient wear resistance in the lateral end faces, since these end faces are in contact with the side seals during casting.
- the invention was based on the object of creating a casing ring for a casting tube according to the type mentioned at the outset, by means of which, in particular in the case of its end faces which may be subjected to a contact pressure during the casting off of the side seals, a higher resistance to wear should be achieved.
- the purpose of this jacket ring is to enable an optimal heat flow from the end region of the casting tube that comes into contact with the molten metal to the water cooling contained in the jacket ring.
- the base material or a material layer applied to this end faces is provided with an additional material layer which at least partially consists of ceramic particles.
- the additional material layer on the end face very advantageously has a high wear resistance, preferably with a hardness between 2000 and 5000 daN / mm 2 , and a low coefficient of friction, preferably between 0.1 and 0.01.
- a high wear resistance preferably with a hardness between 2000 and 5000 daN / mm 2
- a low coefficient of friction preferably between 0.1 and 0.01.
- FIG. 1 shows a longitudinal section of a partially shown casting tube with a jacket ring
- FIG. 2 shows a schematic section of an enlarged part of the
- Figure 6 is a schematic section of an enlarged portion of the
- Federation 7 shows a schematic section of a part of the casing ring at the outer edge with a material layer B.
- FIG. 1 shows one half of a pouring tube 10 and a second indicated pouring tube 11, each consisting essentially of a preferably rigid shaft 15 with various inlet and outlet lines 12, 13 for the cooling water and a jacket ring 20 rotatably mounted on this shaft 15 ,
- a casting tube 10 is used for a strip casting machine, in particular for the production of steel strips.
- the metal strip produced is led away through the gap 14 formed between the rollers.
- the casing ring 20 is, for example, held laterally on a respective bearing ring 17 mounted on the shaft 15 and is rotated by an indicated drive wheel 19 of a drive element (not shown in more detail). It practically has a cooling channel 23, for example formed from a respective bore, through which the cooling water is guided.
- the casing ring 20 is made from a base material A comprising metal and from at least one material layer applied thereon.
- the base material A or a material layer B applied to this base material A is provided with an additional material layer CSt which can at least partially contain ceramic particles.
- This additional material layer CSt on the end face 25 is applied from materials which have a high wear resistance. speed, preferably with a hardness between 2000 and 5000 daN / mm 2 , and a low coefficient of friction, preferably between 0.1 and 0.01.
- a zirconium-based material for example PSZr0 2 or a material made of diamond-like carbon layers, is particularly suitable as the ceramic particle for the material layer CSt.
- This material layer B and / or the material layer C each have a very low thermal conductivity depending on the material of less than 40, preferably less than 10 W / m ° K at the end faces 25. Such materials are selected for this and layer thicknesses are applied such that a lower thermal conductivity is produced in this end region than in the case of the 'annular outer surface 10' in the remaining cylindrical region.
- the base material A on the annular surface 10 ' is also provided with an application of a material layer B and an additional material layer C.
- a continuous transition of the material layer B and the additional material layer C is applied to the end edges 61 of the casing ring 20 from the ring casing surface 10 'to the respective end surface 25.
- the base material A is made from pure copper, from a copper alloy with the main components Cu, Ag or Cu, Cr, Zr or Cu, Ni, Be (beryllium) or from steel, in particular an alloy steel. It is characterized by the good thermal conductivity, which ensures that the water flowing through the cooling channel 23 dissipates as much thermal energy as possible.
- Nickel or a nickel alloy and / or chromium or a chromium alloy is preferably provided for the material layer B applied to the base material.
- the material layer C consists of two different materials, each made of ceramic and / or cermet C1, C2, which is applied to the entire surface of the ring. Al 2 0 3 , SiAI 2 0 2 , PSZr0 2) Si 3 N 4 SiAlON, SiA-IYON and / or SiC can be used in particular for the ceramic or cermet materials C1, C2.
- the cylindrical surface is smooth, with a surface roughness of less than 6, preferably less than 1 micrometer, and accordingly. is finished by turning, grinding or polishing.
- the material layer B and the material layer C / are in the context of the invention by a thermal spraying process, such as plasma spraying, flame spraying, by HIP cladding or by another. Coating method, for example electrolytically, applied.
- the base material A can consist of steel or a steel alloy, however, the material layer B as alloy steel, which is produced by welding, and the material layer C as a thin ceramic application of approximately 0.2 to 0.4 millimeters.
- a material layer B and an additional material layer C are also applied to each of the two end faces 20 'of the casing ring.
- a continuous transition of the material layer B and the additional material layer C from the ring surface to the respective end surface 20 ' is produced at the end edges.
- a band skin D is also illustrated, which forms directly on the outer surface 10 ′.
- FIG. 3 is manufactured in the same way as the casing ring 10 according to FIG.
- the material layer C consisting of two different ceramic materials C1, C2 is applied on the material layer B in such a way that the one ceramic material C2 extends over the entire lateral surface and the second ceramic material C1 is embedded as particles in the first material C2 at approximately uniform intervals.
- this second material has a lower thermal conductivity than the first, there is in each case a lower heat transfer ⁇ than with material C1, as is illustrated by the sawtooth-shaped curve 31.
- This provides adequate protection for layer B and the base material A is reached and at the same time generates a sufficient thermal conductivity.
- the wear of material layer C is very low due to the choice of materials C1 and C2.
- Fig. 4 shows a variant of a Manfelr ⁇ riges, in which only. on. Base material A and a material layer C is present.
- the material layer C is provided with a surface roughness, which in turn creates a heat transfer ⁇ , which in turn manifests itself in a sawtooth curve.
- the desired sawtooth-shaped curve of the heat transfer ⁇ is achieved in that the ceramic layer C applied to the base material A is provided with recesses 51 in the micrometer range, which can be generated, for example, by steel sandblasting.
- the gas film G that forms between the layer C and the band skin D of the molten metal 18 causes the different heat transfer ⁇ depending on the gas used.
- 6 shows an enlarged representation of the transition of the material layer C from the ring surface 10 ′ to the end face 25 provided at the end edge 61 of the casing ring 10, only one base material A, for example CuCrZr or CuNiBe, and one material layer C, for example Al 2 0 3 , SiAI 2 0 2 , PSZr0 2 , Si 3 N 4 SiAlON, SiAlYON or SiC is used.
- the same or a different ceramic material as on the ring surface 10 ′ can be provided for the end face 25.
- a material layer C can be applied to the entire ring surface 10 'by thermal spraying. on. Zirconium-based, eg PSZr0 2 , are applied up to a few millimeters before the ring edge 61. In the subsequent area of the front edge 61 there is a changing . Mixing ratio of the material layers C, C "from one to the other produces their ceramic material! Starting from 100% of this zircon material, another ceramic material is mixed in front of the front edge 61, for example still 60% of the zircon material and 40% of a material another ceramic material. The proportion of the zirconium material is then reduced in the layer C "to 0%, as indicated by the oblique line 62 running towards the corner of the roller.
- Zirconium-based eg PSZr0 2
- a ceramic layer CSt is provided at the end face 25, which can contain, for example, two different ceramic materials PSZr0 2 and / or diamond-like carbon layers. This layer CSt directly adjoins the mixture or the layer with SiC. This creates a homogeneous transition at the roller edge 61, by means of which this jacket ring 10 has an increased service life.
- Fig. 7 differs from Fig. 6 only in that.
- a material layer B for example. Ni, NiCr, is present. which is also provided on the end face of the casing ring.
- the material layer B and the material layer C consisting of the ceramic particles could be applied simultaneously to the base material.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH02540/00A CH692183A5 (de) | 2000-12-30 | 2000-12-30 | Mantelring für eine Giessrolle einer Bandgiessmaschine. |
| CH24502000 | 2000-12-30 | ||
| PCT/EP2001/015309 WO2002053313A1 (de) | 2000-12-30 | 2001-12-21 | Mantelring für eine giessrolle einer bandgiessmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1345717A1 true EP1345717A1 (de) | 2003-09-24 |
| EP1345717B1 EP1345717B1 (de) | 2006-05-10 |
Family
ID=4569984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01988076A Expired - Lifetime EP1345717B1 (de) | 2000-12-30 | 2001-12-21 | Mantelring für eine giessrolle einer bandgiessmaschine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1345717B1 (de) |
| AT (1) | ATE325673T1 (de) |
| CH (1) | CH692183A5 (de) |
| DE (1) | DE50109774D1 (de) |
| WO (1) | WO2002053313A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2666757B1 (fr) * | 1990-09-14 | 1992-12-18 | Usinor Sacilor | Virole pour cylindre de coulee continue des metaux, notamment de l'acier, entre cylindres ou sur un cylindre. |
| WO1996002340A1 (de) * | 1994-07-18 | 1996-02-01 | Siemens Aktiengesellschaft | Giesswalzen-verschleissschutzschicht |
| AU7418198A (en) * | 1997-05-23 | 1998-12-11 | Voest-Alpine Industrieanlagenbau Gmbh | Casting cylinder for thin-band continuous casting installation |
-
2000
- 2000-12-30 CH CH02540/00A patent/CH692183A5/de not_active IP Right Cessation
-
2001
- 2001-12-21 AT AT01988076T patent/ATE325673T1/de not_active IP Right Cessation
- 2001-12-21 EP EP01988076A patent/EP1345717B1/de not_active Expired - Lifetime
- 2001-12-21 DE DE50109774T patent/DE50109774D1/de not_active Expired - Lifetime
- 2001-12-21 WO PCT/EP2001/015309 patent/WO2002053313A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02053313A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CH692183A5 (de) | 2002-03-15 |
| ATE325673T1 (de) | 2006-06-15 |
| WO2002053313A1 (de) | 2002-07-11 |
| EP1345717B1 (de) | 2006-05-10 |
| DE50109774D1 (de) | 2006-06-14 |
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