EP1991378A1 - Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll - Google Patents
Roll for metal processing, in particular a continuous casting roll, and method of producing such a rollInfo
- Publication number
- EP1991378A1 EP1991378A1 EP07703099A EP07703099A EP1991378A1 EP 1991378 A1 EP1991378 A1 EP 1991378A1 EP 07703099 A EP07703099 A EP 07703099A EP 07703099 A EP07703099 A EP 07703099A EP 1991378 A1 EP1991378 A1 EP 1991378A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- roll
- nickel
- roller according
- ceramic particles
- 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.)
- Withdrawn
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 30
- 239000000919 ceramic Substances 0.000 claims description 21
- 239000011651 chromium Substances 0.000 claims description 14
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000005555 metalworking Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000531 Co alloy Inorganic materials 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 38
- 238000005266 casting Methods 0.000 description 4
- 229910001149 41xx steel Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 150000002816 nickel compounds Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ZDKMYVQDSMZLFG-UHFFFAOYSA-N [B].[Ni].[Cr] Chemical compound [B].[Ni].[Cr] ZDKMYVQDSMZLFG-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
-
- 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
- B22D11/14—Plants for continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
Definitions
- Roll for metalworking in particular continuous casting roll, and method for producing such a roll
- the invention relates to a roll for metal production and / or metalworking, in particular a continuous casting roll, which has a roller base made of metal and a layer of wear-resistant material applied thereto. Furthermore, the invention relates to a method for producing such a roll, in particular a continuous casting roll.
- the task of the strand guide rollers is to support the solidified strand after leaving the mold, lead, bend and transport.
- the roller bodies and the bearings of the segmented rollers are exposed to high thermal, mechanical and chemical-corrosive loads.
- the thermal load results from the direct contact of the surface of the roller body with the cast strand, which is between 800 0 C and 1200 0 C hot.
- the mechanical stress is a consequence of the ferrostatic forces, the bending and straightening forces and the driving forces that have to be transferred from the roll to the strand.
- the rollers wear due to friction with the strand. Because of the large amounts of cooling water required and the high temperatures associated with aggressive chemical compounds, the z. B. are caused by the use of the casting powder, care must be taken in addition to the corrosion properties and corrosion protection of the materials used for the role and components.
- a method for producing a continuous casting roll which consists of a core of iron material, which is provided with a shell made of wear-resistant material. Between the outer shell and the core of ferrous material, a layer of copper or a copper alloy is provided. In order to optimize the thermal conductivity of the roll, a nickel layer is galvanically applied to the copper layer, wherein the wear-resistant cover layer of a nickel-chromium-boron alloy is applied by means of build-up welding to this intermediate layer.
- No. 5,161,306 also proposes applying a wear-resistant surface layer to a roll base body provided with intermediate layers, the wear-resistant layer consisting of chromium oxides (Cr 2 O 3 ).
- a continuous casting roll is provided with a wear-resistant layer, which is based on nickel and has carbon, chromium and molybdenum.
- the invention has for its object to remedy the above disadvantages and to provide a role for metalworking, in particular a continuous casting roll, which has sufficient strength and At the same time it resists the thermal, mechanical-abrasive and chemical-corrosive stresses that occur during the operation of the roll, as long as possible and with little or no geometric changes. At the same time the role should be able to be produced at low cost. Furthermore, an appropriate manufacturing method for such a role should be proposed.
- the solution of this object by the invention is characterized in that the layer which is located on the roller body, having electroplated nickel, wherein the surface of the layer forms the working surface of the roller.
- the invention thus goes in relation to the previously known solutions the new way that the wear-resistant layer whose surface forms the working surface of the roll, by means of a galvanic, d. H. electrolytic process is applied.
- the thickness of the applied by means of the galvanic or electrolytic process layer is preferably between 0.01 mm and 10 mm, in particular between 0.05 mm and 2 mm.
- An embodiment of the invention provides that the layer consists of pure nickel.
- the layer has other constituents in addition to nickel.
- these may be other alloy components, namely, for example, one or more of cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) or chromium (Cr).
- a preferred embodiment of the invention provides that the layer next to nickel or said alloy with nickel as the base material has ceramic particles.
- the ceramic particles may be carbides of titanium (Ti), tantalum (Ta), tungsten (W), zirconium (Zr), boron (B), chromium (Cr) and / or silicon (Si).
- a preferred embodiment of the invention provides that the layer consists of a nickel-cobalt alloy, are embedded in the ceramic particles of silicon carbide.
- the ceramic particles may also be oxides of aluminum (AI), chromium (Cr), silicon (Si), beryllium (Be) or zirconium (Zr).
- AI aluminum
- Cr chromium
- Si silicon
- Be beryllium
- Zr zirconium
- the particle size of the ceramic particles is according to a preferred solution between 1 and 5 microns. Another solution provides significantly smaller particles; hereafter the particle size of the ceramic particles is between 10 and 1000 nm.
- the ceramic particles are present at high concentration in the nickel or in the nickel alloy. This means in particular that the volume fraction of ceramic particles in the nickel or in the nickel alloy is between 15% and 40%, preferably between 25% and 30%.
- the hardness of the surface of the layer between 300 and 500 HV 1 (Vickers hardness), preferably between 350 and 450 HV 1, is located.
- the proposed method for producing a roll for metalworking, in particular a continuous casting roll is based on the steps:
- Consists of nickel and the surface of the layer forms the working surface of the roll.
- the proposed invention is based on no longer providing the base material of the strand guide roll with a welded, soft-martensitic surface layer, as is known, but instead galvanically applying a nickel layer or a layer of a nickel compound.
- the thickness of the applied layer can be easily defined or varied over the residence time of the rollers in the galvanic coating bath.
- the electroplated layer is thin and effectively protects the base material of the roll against corrosive attack.
- the layer has a high hardness and a good resistance to high temperatures and a high scale resistance.
- the wear resistance of the continuous casting roll is reliably and inexpensively improved.
- the proposed rolls can thus be used longer, resulting in a corresponding reduction in the cost of the operator of a continuous casting plant.
- FIG. 1 is a schematic side view of a continuous casting
- Fig. 2 shows the detail Z of FIG. 1 and
- Fig. 3 shows schematically the structure of a galvanic or electrolytic coating system with two to be coated continuous casting.
- a continuous casting 1 is seen, which has a not further interest here pin 9, which otherwise consists of a cylindrical cylindrical body 2 in the embodiment.
- pin 9 which otherwise consists of a cylindrical cylindrical body 2 in the embodiment.
- a layer 3 is applied to wear-resistant material, the structure of which is illustrated in more detail in Fig. 2.
- the layer 3 has a layer thickness D, which may for example be between 0.05 mm and 2.0 mm. It is essential that the surface 4 of the layer 3 is the working surface of the roller 1, which has in the case of a continuous casting roller in contact with the still hot casting strand and is consequently exposed to high thermal, mechanical and chemical-corrosive load.
- the layer 3 consists of nickel or a nickel alloy, which is galvanically (electrolytically) applied to the roller body 2 (see Fig. 3).
- this is provided with a not inconsiderable amount of ceramic particles 5, which have an average particle diameter d.
- This can move according to an embodiment in the range between 1 to 5 microns.
- An alternative embodiment provides nanoparticles, ie in this case the diameter d is between 10 and 1000 nm.
- the basic procedure in the production of the continuous casting roll 1 is illustrated in FIG. 3.
- There is a coating 6 can be seen, in which there is a suitable for the galvanic or electrolytic coating liquid. It may be an acid (eg sulfuric acid (H 2 SO 4 )).
- An anode 7 is immersed in the bath and formed by a block of nickel forming the consumable electrode.
- two rollers 1 wherein it is provided that the non-coated roll neck 9 are covered with covers, not shown.
- the two rollers 1 form the cathode 8.
- Anode 7 and cathode 8 are connected to a DC voltage source 10, which can be controlled or regulated in a conventional manner.
- the introduced ceramic particles can be used to optimize the mechanical properties of the nickel layer or of the layer of nickel-metal alloys for the respective application. So it is important to provide a continuous casting roll with a chemically resistant, stable at higher temperatures layer, which has only low abrading rates under abrasive stress, but can be processed at the same time economically during manufacture.
- nickel compounds can be produced which have an average hardness of 350 to 450 HV 1 at room temperature and can therefore be processed with reasonable effort and at the same time have low abrading rates even at relatively high temperatures.
- galvanically prepared metal alloy dispersions based on nickel / cobalt in which ceramic particles - preferably silicon carbide - are embedded with a particle size of 1 to 5 microns or nanoparticles with a size of 10 to 1000 nm.
- the nickel used is preferably of high purity and pressure-biased.
- an electrolytic surface refinement of the roller main body in which hard solid particles are incorporated in a high concentration in a ductile nickel matrix.
- This combination provides a very good wear protection for the part to be protected.
- the casting strand then no longer runs directly on the metal of the metal matrix, but on ceramic particles projecting from the basic contour of the roll surface.
- the abrasion of the nickel can be substantially reduced and the goal can be achieved that the strand guide rollers for a life-long roll life, d. H. for at least 10 years of use.
- the continuous casting rolls can be used for all known applications, ie in particular in block, round, profile, slab and thin slab plants for casting carbon and stainless steel grades.
- the roll diameter (finish diameter including the surface coating) of the strand guide roller usually moves between 80 mm and 350 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
- Continuous Casting (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a roll (1) for metal production and/or metal processing, in particular a continuous casting roll, which has a roll parent body (2) of metal and a coating (3) of wear-resistant material applied to said roll parent body (2). In order to make the roll, in particular the continuous casting roll, especially wear-resistant, the invention provides for the coating (3) to have electrolytically applied nickel, wherein the surface (4) of the coating (3) forms the working surface of the roll (1). Furthermore, the invention relates to a method of producing a roll (1) for metal production and/or metal processing, in particular a continuous casting roll.
Description
Rolle zur Metallbearbeitung, insbesondere Stranggießrolle, sowie Verfahren zur Herstellung einer solchen RolleRoll for metalworking, in particular continuous casting roll, and method for producing such a roll
Die Erfindung betrifft eine Rolle zur Metallherstellung und/oder Metallbearbeitung, insbesondere eine Stranggießrolle, die einen Rollengrundkörper aus Metall und eine auf diesem aufgebrachte Schicht aus verschleißbeständigem Material aufweist. Des Weiteren betrifft die Erfindung ein Verfahren zur Herstellung einer solchen Rolle, insbesondere einer Stranggießrolle.The invention relates to a roll for metal production and / or metalworking, in particular a continuous casting roll, which has a roller base made of metal and a layer of wear-resistant material applied thereto. Furthermore, the invention relates to a method for producing such a roll, in particular a continuous casting roll.
Einen großen Anteil an der einwandfreien Funktion einer Stranggießanlage sowie an der Qualität der Gussprodukte und an der Wirtschaftlichkeit der Anlage haben die Strangführungsrollen. Die Aufgabe der Strangführungsrollen ist es, den erstarrten Strang nach dem Verlassen der Kokille abzustützen, zu führen, zu biegen und zu transportieren. Dabei sind die Rollenkörper sowie die Lager der Segmentrollen hohen thermischen, mechanischen und chemisch-korrosiven Belastungen ausgesetzt.A large proportion of the perfect function of a continuous casting plant as well as the quality of the cast products and the economic efficiency of the plant have the strand guide rollers. The task of the strand guide rollers is to support the solidified strand after leaving the mold, lead, bend and transport. The roller bodies and the bearings of the segmented rollers are exposed to high thermal, mechanical and chemical-corrosive loads.
Die thermische Belastung ergibt sich durch den direkten Kontakt der Oberfläche des Rollenkörpers mit dem Gießstrang, der zwischen 800 0C und 1.200 0C heiß ist. Die mechanische Belastung ist eine Folge der ferrostatischen Kräfte, der Biege- und Richtkräfte sowie der Antriebskräfte, die von der Rolle auf den Strang übertragen werden müssen. Außerdem verschleißen die Rollen in Folge der Reibung mit dem Strang. Wegen der großen benötigten Kühlwassermengen und der hohen Temperaturen in Verbindung mit aggressiven chemischen Verbindungen, die z. B. durch die Verwendung des Gießpulvers bedingt sind, muss zusätzlich auf die Korrosionseigenschaften bzw. auf den Korrosionsschutz der für die Rolle verwendeten Werkstoffe und Bauteile geachtet werden.The thermal load results from the direct contact of the surface of the roller body with the cast strand, which is between 800 0 C and 1200 0 C hot. The mechanical stress is a consequence of the ferrostatic forces, the bending and straightening forces and the driving forces that have to be transferred from the roll to the strand. In addition, the rollers wear due to friction with the strand. Because of the large amounts of cooling water required and the high temperatures associated with aggressive chemical compounds, the z. B. are caused by the use of the casting powder, care must be taken in addition to the corrosion properties and corrosion protection of the materials used for the role and components.
Bekannt ist es, die Rollen einer Stranggießanlage aus einem Vergütungsstahl als Grundwerkstoff zu fertigen (z. B. 21 CrMoV 511 V, 16 CrMo 44, 24 CrMo 5
und S 355), der in der Lage ist, die hohen mechanischen Belastungen aufzunehmen. Allerdings ist dieser Stahl meist weniger geeignet, dauerhaft den thermischen und chemisch-korrosiven Belastungen zu widerstehen. Um eine hinreichende Beständigkeit auch gegen hohe Temperaturen und gegen chemisch-korrosive Einflüsse zu erzielen, ist es bekannt, den Rollenkörper mittels Auftragsschweißen mit einem weichmartensitischen Werkstoff zu versehen. Allerdings ist dies relativ kostenintensiv.It is known to manufacture the rolls of a continuous casting plant from a tempering steel as base material (eg 21 CrMoV 511 V, 16 CrMo 44, 24 CrMo 5 and S 355) capable of absorbing the high mechanical loads. However, this steel is usually less suitable to permanently withstand the thermal and chemical-corrosive loads. In order to achieve a sufficient resistance to high temperatures and to chemical-corrosive influences, it is known to provide the roller body by means of build-up welding with a weichmartensitischen material. However, this is relatively expensive.
Aus der DE 40 27225 C2 ist ein Verfahren zur Herstellung einer Stranggießrolle bekannt, die aus einem Kern aus Eisenwerkstoff besteht, der mit einem Man- tel aus verschleißbeständigem Material versehen ist. Zwischen dem äußeren Mantel und dem Kern aus Eisenwerkstoff ist eine Schicht aus Kupfer oder aus einer Kupferlegierung vorgesehen. Um die Wärmeleitfähigkeit der Rolle zu optimieren, ist auf die Kupferschicht eine Nickelschicht galvanisch aufgebracht, wobei auf diese Zwischenschicht die verschleißbeständige Deckschicht aus einer Nickel-Chrom-Bor-Legierung mittels Auftragsschweißen aufgebracht wird.From DE 40 27225 C2 a method for producing a continuous casting roll is known, which consists of a core of iron material, which is provided with a shell made of wear-resistant material. Between the outer shell and the core of ferrous material, a layer of copper or a copper alloy is provided. In order to optimize the thermal conductivity of the roll, a nickel layer is galvanically applied to the copper layer, wherein the wear-resistant cover layer of a nickel-chromium-boron alloy is applied by means of build-up welding to this intermediate layer.
Auch die US 5,161,306 schlägt vor, eine verschleißfeste Oberflächenschicht auf einen mit Zwischenschichten verseheinen Rollengrundkörper aufzubringen, wobei die verschleißfeste Schicht aus Chromoxiden besteht (Cr2O3).No. 5,161,306 also proposes applying a wear-resistant surface layer to a roll base body provided with intermediate layers, the wear-resistant layer consisting of chromium oxides (Cr 2 O 3 ).
Auch in der US 2002/0056539 A1 wird eine Stranggießrolle mit einer verschleißbeständigen Schicht versehen, wobei diese auf Nickel basiert und Kohlenstoff, Chrom und Molybdän aufweist.Also in US 2002/0056539 A1, a continuous casting roll is provided with a wear-resistant layer, which is based on nickel and has carbon, chromium and molybdenum.
Andere Rollen mit diversen verschleißfesten Beschichtungsmaterialien sind aus der JP 6218 3950 A1 , der JP 6223 0462 A, der JP 6308 6856 A, der JP 6003 0560 A, der JP 5912 9754 A und aus der JP 6220 7549 A bekannt.Other rolls with various wear-resistant coating materials are known from JP 6218 3950 A1, JP 6223 0462 A, JP 6308 6856 A, JP 6003 0560 A, JP 5912 9754 A and JP 6220 7549 A.
Der Erfindung liegt die Aufgabe zugrunde, mit Blick auf die erläuterten Nachteile Abhilfe zu schaffen und eine Rolle zur Metallbearbeitung, insbesondere eine Stranggießrolle, zu schaffen, die über eine ausreichende Festigkeit verfügt und
gleichzeitig den thermischen, mechanisch-abrasiven und chemisch-korrosiven Belastungen widersteht, die im Betrieb der Rolle auftreten, wobei dies möglichst lange und ohne oder nur mit geringfügigen geometrischen Veränderungen erfolgt. Gleichzeitig soll die Rolle mit geringen Kosten hergestellt werden können. Ferner soll ein entsprechendes Herstellverfahren für eine solche Rolle vorge- schlagen werden.The invention has for its object to remedy the above disadvantages and to provide a role for metalworking, in particular a continuous casting roll, which has sufficient strength and At the same time it resists the thermal, mechanical-abrasive and chemical-corrosive stresses that occur during the operation of the roll, as long as possible and with little or no geometric changes. At the same time the role should be able to be produced at low cost. Furthermore, an appropriate manufacturing method for such a role should be proposed.
Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass die Schicht, die sich auf dem Rollengrundkörper befindet, galvanisch aufgebrachtes Nickel aufweist, wobei die Oberfläche der Schicht die Arbeitsfläche der Rolle bildet.The solution of this object by the invention is characterized in that the layer which is located on the roller body, having electroplated nickel, wherein the surface of the layer forms the working surface of the roller.
Die Erfindung geht also im Verhältnis zu den vorbekannten Lösungen den neuen Weg, dass die verschleißfeste Schicht, deren Oberfläche die Arbeitsfläche der Rolle bildet, mittels eines galvanischen, d. h. elektrolytischen Verfahrens aufgebracht wird.The invention thus goes in relation to the previously known solutions the new way that the wear-resistant layer whose surface forms the working surface of the roll, by means of a galvanic, d. H. electrolytic process is applied.
Die Dicke der mittels des galvanischen bzw. elektrolytischen Prozesses aufgebrachten Schicht liegt dabei bevorzugt zwischen 0,01 mm und 10 mm, insbesondere zwischen 0,05 mm und 2 mm.The thickness of the applied by means of the galvanic or electrolytic process layer is preferably between 0.01 mm and 10 mm, in particular between 0.05 mm and 2 mm.
Eine Ausgestaltung der Erfindung sieht vor, dass die Schicht aus reinem Nickel besteht.An embodiment of the invention provides that the layer consists of pure nickel.
Allerdings wird bevorzugt vorgesehen, dass die Schicht neben Nickel weitere Bestandteile aufweist.However, it is preferably provided that the layer has other constituents in addition to nickel.
Dies können neben Nickel andere Legierungsbestandteile sein, nämlich beispielsweise einer oder mehrere der Bestandteile Kobalt (Co), Phosphor (P), Eisen (Fe), Zink (Zn), Kupfer (Cu), Mangan (Mn) oder Chrom (Cr).
Eine bevorzugte Weiterbildung der Erfindung sieht vor, dass die Schicht neben Nickel bzw. der genannten Legierung mit Nickel als Grundmaterial keramische Partikel aufweist. Die keramischen Partikel können Karbide von Titan (Ti), von Tantal (Ta), von Wolfram (W), von Zirkonium (Zr), von Bor (B), von Chrom (Cr) und/oder von Silizium (Si) sein.In addition to nickel, these may be other alloy components, namely, for example, one or more of cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) or chromium (Cr). A preferred embodiment of the invention provides that the layer next to nickel or said alloy with nickel as the base material has ceramic particles. The ceramic particles may be carbides of titanium (Ti), tantalum (Ta), tungsten (W), zirconium (Zr), boron (B), chromium (Cr) and / or silicon (Si).
Eine bevorzugte Ausgestaltung der Erfindung sieht dabei vor, dass die Schicht aus einer Nickel-Kobalt-Legierung besteht, in die keramische Partikel aus Silizium-Karbid eingelagert sind.A preferred embodiment of the invention provides that the layer consists of a nickel-cobalt alloy, are embedded in the ceramic particles of silicon carbide.
Die keramischen Partikel können auch Oxide von Aluminium (AI), von Chrom (Cr), von Silizium (Si), von Beryllium (Be) oder von Zirkonium (Zr) sein.The ceramic particles may also be oxides of aluminum (AI), chromium (Cr), silicon (Si), beryllium (Be) or zirconium (Zr).
Die Teilchengröße der keramischen Partikel liegt dabei gemäß einer bevorzugten Lösung zwischen 1 und 5 μm. Eine andere Lösung sieht deutlich kleinere Partikel vor; hiernach liegt die Teilchengröße der keramischen Partikel zwischen 10 und 1.000 nm.The particle size of the ceramic particles is according to a preferred solution between 1 and 5 microns. Another solution provides significantly smaller particles; hereafter the particle size of the ceramic particles is between 10 and 1000 nm.
Mit besonderem Vorteil liegen die keramischen Partikel mit hoher Konzentration in dem Nickel bzw. in der Nickellegierung vor. Darunter ist insbesondere zu ver- stehen, dass der Volumenanteil an keramischen Partikeln in dem Nickel bzw. in der Nickellegierung zwischen 15 % und 40 %, vorzugsweise zwischen 25 % und 30 %, beträgt.With particular advantage, the ceramic particles are present at high concentration in the nickel or in the nickel alloy. This means in particular that the volume fraction of ceramic particles in the nickel or in the nickel alloy is between 15% and 40%, preferably between 25% and 30%.
Nicht zuletzt hierdurch wird erreicht, dass gemäß einer vorteilhaften Ausbildung der Erfindung die Härte der Oberfläche der Schicht zwischen 300 und 500 HV 1 (Vickers-Härte), vorzugsweise zwischen 350 und 450 HV 1 , liegt. Das vorgeschlagene Verfahren zur Herstellung einer Rolle zur Metallbearbeitung, insbesondere einer Stranggießrolle, stellt auf die Schritte ab:Not least, this achieves that according to an advantageous embodiment of the invention, the hardness of the surface of the layer between 300 and 500 HV 1 (Vickers hardness), preferably between 350 and 450 HV 1, is located. The proposed method for producing a roll for metalworking, in particular a continuous casting roll, is based on the steps:
a) Herstellung eines Rollengrundkörpers aus Metall;
b) Einbringen des Rollengrundkörpers in ein galvanisches Beschichtungs- bad;a) production of a rolling body made of metal; b) introducing the roller main body into a galvanic coating bath;
c) galvanisches Aufbringen einer Schicht auf zumindest einen Teil der Ober- fläche des Rollengrundkörpers, wobei die Schicht zumindest teilweise ausc) electroplating a layer on at least a part of the surface of the roller base body, the layer at least partially
Nickel besteht und die Oberfläche der Schicht die Arbeitsfläche der Rolle bildet.Consists of nickel and the surface of the layer forms the working surface of the roll.
Der Erfindungsvorschlag stellt also darauf ab, den Grundwerkstoff der Strang- führungsrolle nicht mehr - wie bekannt - mit einer aufgeschweißten, weichmar- tensitischen Oberflächenschicht zu versehen, sondern galvanisch eine Nickelschicht oder eine Schicht einer Nickelverbindung aufzubringen.Thus, the proposed invention is based on no longer providing the base material of the strand guide roll with a welded, soft-martensitic surface layer, as is known, but instead galvanically applying a nickel layer or a layer of a nickel compound.
Vorteilhaft ist es dabei, dass in galvanischen Bädern gleichzeitig eine große Zahl an Rollen beschichtet werden kann, so dass die Herstell kosten pro Rolle gering bleiben. Außerdem lässt sich über die Verweildauer der Rollen im galvanischen Beschichtungsbad die Dicke der aufgebrachten Schicht leicht definieren bzw. variieren.It is advantageous in that at the same time a large number of rollers can be coated in electroplating baths, so that the manufacturing costs per roll remain low. In addition, the thickness of the applied layer can be easily defined or varied over the residence time of the rollers in the galvanic coating bath.
Die galvanisch aufgebrachte Schicht ist dünn und schützt damit den Grundwerkstoff der Rolle wirksam gegen einen korrosiven Angriff. Gleichzeitig hat die Schicht eine hohe Härte und eine gute Beständigkeit gegen hohe Temperaturen sowie eine große Zunderbeständigkeit. Somit wird die Verschleißfestigkeit der Stranggussrolle zuverlässig und kostengünstig verbessert. Die vorgeschlage- nen Rollen können damit länger eingesetzt werden, was zu einer entsprechenden Verminderung der Kosten für den Betreiber einer Stranggussanlage führt.The electroplated layer is thin and effectively protects the base material of the roll against corrosive attack. At the same time, the layer has a high hardness and a good resistance to high temperatures and a high scale resistance. Thus, the wear resistance of the continuous casting roll is reliably and inexpensively improved. The proposed rolls can thus be used longer, resulting in a corresponding reduction in the cost of the operator of a continuous casting plant.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1 schematisch in der Seitenansicht eine Stranggießrolle,
Fig. 2 die Einzelheit Z gemäß Fig. 1 und1 is a schematic side view of a continuous casting, Fig. 2 shows the detail Z of FIG. 1 and
Fig. 3 schematisch den Aufbau einer galvanischen bzw. elektrolytischen Beschichtungsanlage mit zwei zu beschichtenden Stranggießrollen.Fig. 3 shows schematically the structure of a galvanic or electrolytic coating system with two to be coated continuous casting.
In Fig. 1 ist eine Stranggießrolle 1 zu sehen, die einen hier nicht weiter interessierenden Zapfen 9 aufweist, die ansonsten aus einem im Ausführungsbeispiel zylindrischen Rollengrundkörper 2 besteht. Auf den Rollengrundkörper 2 ist ei- ne Schicht 3 auf verschleißresistentem Material aufgebracht, dessen Aufbau in Fig. 2 näher illustriert ist.In Fig. 1, a continuous casting 1 is seen, which has a not further interest here pin 9, which otherwise consists of a cylindrical cylindrical body 2 in the embodiment. On the roller base body 2 a layer 3 is applied to wear-resistant material, the structure of which is illustrated in more detail in Fig. 2.
Die Schicht 3 hat eine Schichtdicke D, die beispielsweise zwischen 0,05 mm und 2,0 mm liegen kann. Wesentlich ist, dass die Oberfläche 4 der Schicht 3 die Arbeitsfläche der Rolle 1 ist, die im Falle einer Stranggießrolle Kontakt mit dem noch heißen Gießstrang hat und folglich einer hohen thermischen, mechanischen und chemisch-korrosiven Belastung ausgesetzt ist.The layer 3 has a layer thickness D, which may for example be between 0.05 mm and 2.0 mm. It is essential that the surface 4 of the layer 3 is the working surface of the roller 1, which has in the case of a continuous casting roller in contact with the still hot casting strand and is consequently exposed to high thermal, mechanical and chemical-corrosive load.
Die Schicht 3 besteht aus Nickel oder einer Nickellegierung, wobei diese galva- nisch (elektrolytisch) auf den Rollengrundkörper 2 aufgebracht ist (s. hierzu Fig. 3).The layer 3 consists of nickel or a nickel alloy, which is galvanically (electrolytically) applied to the roller body 2 (see Fig. 3).
Zur Erhöhung insbesondere der mechanischen und thermischen Resistenz der Oberfläche 4 der Rolle 1 ist diese mit einem nicht unerheblichen Anteil an ke- ramischen Partikeln 5 versehen, die einen mittleren Partikeldurchmesser d haben. Dieser kann sich nach einer Ausführungsform im Bereich zwischen 1 bis 5 μm bewegen. Eine alternative Ausgestaltung sieht indes Nanopartikel vor, d. h. in diesem Falle liegt der Durchmesser d zwischen 10 und 1.000 nm.
Die grundsätzliche Vorgehensweise bei der Herstellung der Stranggießrolle 1 ist in Fig. 3 illustriert. Dort ist ein Beschichtungsbad 6 zu sehen, in dem sich eine für die galvanische bzw. elektrolytische Beschichtung geeignete Flüssigkeit befindet. Es kann sich dabei um eine Säure handeln (z. B. Schwefelsäure (H2SO4)). In das Bad taucht eine Anode 7 ein, die durch einen Block Nickel ge- bildet wird, der die Verbrauchselektrode bildet. Weiterhin tauchen im Ausführungsbeispiel zwei Rollen 1 ein, wobei vorgesehen ist, dass die nicht zu beschichtenden Walzenzapfen 9 mit nicht dargestellten Abdeckungen abgedeckt sind. Die beiden Walzen 1 bilden die Kathode 8. Anode 7 und Kathode 8 sind an eine Gleichspannungsquelle 10 angeschlossen, die in an sich bekannter Weise gesteuert bzw. geregelt werden kann.To increase in particular the mechanical and thermal resistance of the surface 4 of the roll 1, this is provided with a not inconsiderable amount of ceramic particles 5, which have an average particle diameter d. This can move according to an embodiment in the range between 1 to 5 microns. An alternative embodiment, however, provides nanoparticles, ie in this case the diameter d is between 10 and 1000 nm. The basic procedure in the production of the continuous casting roll 1 is illustrated in FIG. 3. There is a coating 6 can be seen, in which there is a suitable for the galvanic or electrolytic coating liquid. It may be an acid (eg sulfuric acid (H 2 SO 4 )). An anode 7 is immersed in the bath and formed by a block of nickel forming the consumable electrode. Furthermore, dive in the embodiment, two rollers 1, wherein it is provided that the non-coated roll neck 9 are covered with covers, not shown. The two rollers 1 form the cathode 8. Anode 7 and cathode 8 are connected to a DC voltage source 10, which can be controlled or regulated in a conventional manner.
Beim Stromanschluss ergibt sich eine elektrochemische Abscheidung von einem metallischen Niederschlag aus Nickel auf der (nicht abgedeckten) Oberfläche der Rollen 1. Der elektrische Strom löst Metallionen von der Verbrauchs- elektrode 7 ab und lagert sie durch Reduktion auf der Oberfläche der Rollen 1 ab. Dadurch wird die Rolle 1 allseitig und gleichmäßig mit Nickel beschichtet. Je länger sich die Rollen 1 im Bad 6 befinden, umso dicker wird die Schicht des Nickels auf dem Rollengrundkörper 2.When power is connected, an electrochemical deposition of a metallic precipitate of nickel results on the (uncovered) surface of the rollers 1. The electric current dissolves metal ions from the consumption electrode 7 and deposits them by reduction on the surface of the rollers 1. As a result, the roll 1 is coated on all sides and uniformly with nickel. The longer the rollers 1 are in the bath 6, the thicker the layer of nickel on the roller base body 2 becomes.
Durch die eingebrachten keramischen Partikel lassen sich die mechanischtechnologischen Eigenschaften der Nickelschicht bzw. der Schicht aus Nickel- Metalllegierungen für die jeweilige Anwendung optimieren. So kommt es darauf an, eine Stranggießrolle mit einer chemisch resistenten, bei höheren Temperaturen stabilen Schicht zu versehen, die bei abrasiver Beanspruchung nur gerin- ge Abschleifraten aufweist, sich aber gleichzeitig bei der Herstellung wirtschaftlich bearbeiten lässt. Beispielsweise lassen sich Nickelverbindungen herstellen, die bei Raumtemperatur eine mittlere Härte von 350 bis 450 HV 1 aufweisen und damit mit vertretbarem Aufwand bearbeitet werden können und gleichzeitig selbst bei höheren Temperaturen geringe Abschleifraten aufweisen.
Besonders geeignet sind für den vorgeschlagenen Anwendungsfall galvanisch hergestellte Metalllegierungsdispersionen auf der Basis von Nickel/Kobalt, in welche keramische Teilchen - bevorzugt Silizium-Karbid - mit einer Teilchengröße von 1 bis 5 μm oder Nanoteilchen mit einer Größe von 10 bis 1.000 nm eingelagert sind.The introduced ceramic particles can be used to optimize the mechanical properties of the nickel layer or of the layer of nickel-metal alloys for the respective application. So it is important to provide a continuous casting roll with a chemically resistant, stable at higher temperatures layer, which has only low abrading rates under abrasive stress, but can be processed at the same time economically during manufacture. For example, nickel compounds can be produced which have an average hardness of 350 to 450 HV 1 at room temperature and can therefore be processed with reasonable effort and at the same time have low abrading rates even at relatively high temperatures. Particularly suitable for the proposed application are galvanically prepared metal alloy dispersions based on nickel / cobalt, in which ceramic particles - preferably silicon carbide - are embedded with a particle size of 1 to 5 microns or nanoparticles with a size of 10 to 1000 nm.
Das zum Einsatz kommende Nickel ist bevorzugt hochrein und druckvorspan- nungsbehaftet.The nickel used is preferably of high purity and pressure-biased.
Bevorzugt kommt also eine elektrolytische Oberflächenveredlung des Rollen- grundkörpers zum Einsatz, bei dem in eine duktile Nickelmatrix harte Feststoffpartikel in hoher Konzentration eingelagert werden. Diese Kombination bewirkt für das zu schützende Teil einen sehr guten Verschleißschutz. Der Gießstrang läuft dann nämlich nicht mehr direkt auf dem Metall der Metallmatrix, sondern auf aus der Grundkontur der Rollenoberfläche herausragenden keramischen Partikeln. Damit kann die Abrasion des Nickels wesentlich reduziert und das Ziel erreicht werden, dass die Strangführungsrollen für eine lebenslange Rollenstandzeit, d. h. für mindestens 10 Jahre Gebrauch, ausgelegt sind.Preferably, therefore, an electrolytic surface refinement of the roller main body is used, in which hard solid particles are incorporated in a high concentration in a ductile nickel matrix. This combination provides a very good wear protection for the part to be protected. The casting strand then no longer runs directly on the metal of the metal matrix, but on ceramic particles projecting from the basic contour of the roll surface. Thus, the abrasion of the nickel can be substantially reduced and the goal can be achieved that the strand guide rollers for a life-long roll life, d. H. for at least 10 years of use.
Denkbar ist es dabei auch, dass mehrere galvanische Beschichtungen auf den Rollengrundkörper aufgebracht werden, wobei stets das gleiche Beschich- tungsmaterial oder auch unterschiedliche Beschichtungsmaterialien zum Einsatz kommen können.It is also conceivable that a plurality of galvanic coatings are applied to the main body of the roll, wherein always the same coating material or different coating materials can be used.
Die Stranggießrollen können für alle bekannten Anwendungsfälle verwendet werden, d. h. insbesondere bei Block-, Rund-, Profil-, Brammen- und Dünnbrammenanlagen zum Vergießen von Kohlenstoff- und Rostfreistahlqualitäten. Der Rollendurchmesser (Fertigdurchmesser inklusive der Oberflächenbeschich- tung) der Strangführungsrolle bewegt sich dabei meist zwischen 80 mm und 350 mm.
Bezugszeichenliste:The continuous casting rolls can be used for all known applications, ie in particular in block, round, profile, slab and thin slab plants for casting carbon and stainless steel grades. The roll diameter (finish diameter including the surface coating) of the strand guide roller usually moves between 80 mm and 350 mm. LIST OF REFERENCE NUMBERS
1 Rolle (Stranggießrolle)1 roll (continuous casting roll)
2 Rollengrundkörper2 roller body
3 Schicht3 layer
4 Oberfläche der Schicht4 surface of the layer
5 keramische Partikel5 ceramic particles
6 Beschichtungsbad6 coating bath
7 Anode (Pluspol)7 anode (positive pole)
8 Kathode (Minuspol)8 cathode (negative pole)
9 Zapfen9 cones
10 Gleichspannungsquelle10 DC voltage source
D Dicke der Schicht d Teilchenαröße der kera
D thickness of the layer d particle size of kera
Claims
1. Rolle (1 ) zur Metallbearbeitung, insbesondere Stranggießrolle, die einen Rollengrundkörper (2) aus Metall und eine auf diesem aufgebrachte1. roll (1) for metalworking, in particular continuous casting roll, a roller base body (2) made of metal and applied thereto
Schicht (3) aus verschleißbeständigem Material aufweist,Comprising layer (3) of wear-resistant material,
dadurch gekennzeichnet,characterized,
dass die Schicht (3) galvanisch aufgebrachtes Nickel aufweist, wobei diethe layer (3) comprises galvanically deposited nickel, wherein the
Oberfläche (4) der Schicht (3) die Arbeitsfläche der Rolle (1 ) bildet.Surface (4) of the layer (3) forms the working surface of the roller (1).
2. Rolle nach Anspruch 1 , dadurch gekennzeichnet, dass die Dicke (D) der Schicht (3) zwischen 0,01 mm und 10 mm, vorzugsweise zwischen 0,05 mm und 2 mm, beträgt.2. Roller according to claim 1, characterized in that the thickness (D) of the layer (3) is between 0.01 mm and 10 mm, preferably between 0.05 mm and 2 mm.
3. Rolle nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schicht (3) aus reinem Nickel besteht.3. Roller according to claim 1 or 2, characterized in that the layer (3) consists of pure nickel.
4. Rolle nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schicht (3) neben Nickel weitere Bestandteile aufweist.4. Roller according to claim 1 or 2, characterized in that the layer (3) in addition to nickel further constituents.
5. Rolle nach Anspruch 4, dadurch gekennzeichnet, dass die Schicht (3) neben Nickel eines oder mehrere der Bestandteile Kobalt (Co), Phosphor (P), Eisen (Fe), Zink (Zn), Kupfer (Cu), Mangan (Mn) oder Chrom (Cr) aufweist.5. Roller according to claim 4, characterized the layer (3) contains, in addition to nickel, one or more of cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) or chromium (Cr).
6. Rolle nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Schicht (3) neben Nickel keramische Partikel (5) aufweist.6. Roller according to claim 4 or 5, characterized in that the layer (3) next to nickel ceramic particles (5).
7. Rolle nach Anspruch 6, dadurch gekennzeichnet, dass die keramischen Partikel (5) Karbide von Titan (Ti), von Tantal (Ta), von Wolfram (W), von Zirkonium (Zr), von Bor (B), von Chrom (Cr) und/oder von Silizium (Si) sind.7. Roller according to claim 6, characterized in that the ceramic particles (5) carbides of titanium (Ti), of tantalum (Ta), of tungsten (W), of zirconium (Zr), of boron (B), of chromium (Cr) and / or of silicon (Si).
8. Rolle nach Anspruch 7, dadurch gekennzeichnet, dass die Schicht (3) aus einer Nickel-Kobalt-Legierung besteht, in die ke- ramische Partikel (5) aus Silizium-Karbid eingelagert sind.8. Roller according to claim 7, characterized in that the layer (3) consists of a nickel-cobalt alloy in which ceramic particles (5) of silicon carbide are incorporated.
9. Rolle nach Anspruch 6, dadurch gekennzeichnet, dass die keramischen Partikel (5) Oxide von Aluminium (AI), von Chrom9. Roller according to claim 6, characterized in that the ceramic particles (5) oxides of aluminum (AI), of chromium
(Cr), von Silizium (Si), von Beryllium (Be) oder von Zirkonium (Zr) sind.(Cr), of silicon (Si), of beryllium (Be) or of zirconium (Zr).
10. Rolle nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass die Teilchengröße (d) der keramischen Partikel (5) zwischen 1 und 5 μm liegt.10. Roller according to one of claims 6 to 9, characterized the particle size (d) of the ceramic particles (5) is between 1 and 5 μm.
11. Rolle nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass die Teilchengröße (d) der keramischen Partikel (5) zwischen 10 und 1.000 nm liegt.11. Roller according to one of claims 6 to 9, characterized in that the particle size (d) of the ceramic particles (5) is between 10 and 1000 nm.
12. Rolle nach einem der Ansprüche 6 bis 11 , dadurch gekennzeichnet, dass die keramischen Partikel (5) mit hoher Konzentration in dem Nickel bzw. in der Nickellegierung vorliegen.12. Roller according to one of claims 6 to 11, characterized in that the ceramic particles (5) are present in a high concentration in the nickel or in the nickel alloy.
13. Rolle nach Anspruch 12, dadurch gekennzeichnet, dass der Volumenanteil an keramischen Partikeln (5) in dem Nickel bzw. in der Nickellegierung zwischen 15 % und 40 %, vorzugsweise zwischen 25 % und 30 %, beträgt.13. Roller according to claim 12, characterized in that the volume fraction of ceramic particles (5) in the nickel or in the nickel alloy is between 15% and 40%, preferably between 25% and 30%.
14. Rolle nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die Härte der Oberfläche (4) der Schicht (3) zwischen 300 und 50014. Roller according to one of claims 1 to 13, characterized in that the hardness of the surface (4) of the layer (3) between 300 and 500
HV 1 , vorzugsweise zwischen 350 und 450 HV 1 , liegt HV 1, preferably between 350 and 450 HV 1, is located
15. Verfahren zur Herstellung einer Rolle (1 ) zur Metallherstellung und/oder Metallbearbeitung, insbesondere einer Stranggießrolle,15. A method for producing a roll (1) for metal production and / or metalworking, in particular a continuous casting roll,
dadurch gekennzeichnet,characterized,
dass es die Schritte aufweist:that it has the steps:
a) Herstellung eines Rollengrundkörpers (2) aus Metall;a) production of a roller main body (2) made of metal;
b) Einbringen des Rollengrundkörpers (2) in ein galvanisches Beschich- tungsbad (6);b) introducing the roller base body (2) into a galvanic coating bath (6);
c) galvanisches Aufbringen einer Schicht (3) auf zumindest einen Teil der Oberfläche des Rollengrundkörpers (2), wobei die Schicht (3) zumindest teilweise aus Nickel besteht und die Oberfläche (4) der Schicht (3) die Arbeitsfläche der Rolle (1 ) bildet. c) electroplating a layer (3) on at least part of the surface of the roll base body (2), wherein the layer (3) consists at least partially of nickel and the surface (4) of the layer (3) the working surface of the roll (1) forms.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006011384.5A DE102006011384B4 (en) | 2006-03-09 | 2006-03-09 | Roll for metalworking, in particular continuous casting roll |
PCT/EP2007/000740 WO2007101512A1 (en) | 2006-03-09 | 2007-01-29 | Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1991378A1 true EP1991378A1 (en) | 2008-11-19 |
Family
ID=38016849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07703099A Withdrawn EP1991378A1 (en) | 2006-03-09 | 2007-01-29 | Roll for metal processing, in particular a continuous casting roll, and method of producing such a roll |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090107648A1 (en) |
EP (1) | EP1991378A1 (en) |
JP (1) | JP2009529425A (en) |
KR (1) | KR20080108973A (en) |
CN (1) | CN101394960A (en) |
CA (1) | CA2642882A1 (en) |
DE (1) | DE102006011384B4 (en) |
WO (1) | WO2007101512A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007028823A1 (en) * | 2007-06-20 | 2008-12-24 | Siemens Ag | Process for producing a sheet in a rolling mill |
DE102007028824B3 (en) * | 2007-06-20 | 2009-02-19 | Siemens Ag | Process for producing a sheet in a rolling mill |
CN103882398B (en) * | 2011-05-03 | 2016-04-06 | 蒙特集团(香港)有限公司 | Solar silicon wafers Linear cut deflector roll special coating system and electroplating machine |
CN102978581A (en) * | 2012-11-06 | 2013-03-20 | 上海宏昊企业发展有限公司 | Thermal expansion aluminum guide roller and production process thereof |
CN105856085B (en) * | 2016-03-30 | 2018-05-18 | 东北大学 | The method that abrasive disk is prepared with boron carbide |
CN110253299A (en) * | 2019-06-06 | 2019-09-20 | 扬州市顺腾不锈钢照明器材有限公司 | A kind of steel plate opens flat machine |
CN111438201A (en) * | 2020-04-01 | 2020-07-24 | 上海英佛曼纳米科技股份有限公司 | Cold rolling tensioning roller with wear-resistant rough and super-reduction-resistant nano coating |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59129754A (en) | 1983-01-12 | 1984-07-26 | Kubota Ltd | Chilled roll material with superior wear resistance |
JPS6030560A (en) | 1983-07-27 | 1985-02-16 | Daido Steel Co Ltd | Roll for conveying hot ingot |
JPH0638975B2 (en) | 1986-02-06 | 1994-05-25 | 新日本製鐵株式会社 | Thermal spray roll for hot billet processing |
JPS62207549A (en) | 1986-03-06 | 1987-09-11 | Hitachi Metals Ltd | Guide roll for continuous casting |
JPS62230462A (en) | 1986-04-01 | 1987-10-09 | Nippon Steel Corp | Roll for continuous casting |
JPS6386856A (en) | 1986-09-29 | 1988-04-18 | Nippon Steel Corp | Thermally sprayed roll for treating hot steel slab |
US5161306A (en) | 1989-08-17 | 1992-11-10 | Tocalo Co., Ltd. | Roll for use in heat treating furnace and method of producing the same |
CA2035970C (en) * | 1990-02-09 | 1999-06-01 | Eiji Hirai | Process for surface treating titanium-containing metallic material |
JP2716846B2 (en) * | 1990-06-25 | 1998-02-18 | 新日本製鐵株式会社 | Cold rolling method for stainless steel sheet |
DE4027225C2 (en) | 1990-08-24 | 1993-12-16 | Mannesmann Ag | Process for the production of a supporting and guiding roller of a continuous caster |
JPH04333575A (en) * | 1991-01-29 | 1992-11-20 | Nippon Parkerizing Co Ltd | Formation of composite coating film on metallic material containing titanium |
JPH06330392A (en) * | 1993-05-26 | 1994-11-29 | Nippon Parkerizing Co Ltd | Composite plating metallic material excellent in wear resistance and sliding property and its production |
JP3012913B2 (en) * | 1993-10-25 | 2000-02-28 | 新日本製鐵株式会社 | Roll of continuous sheet metal casting equipment |
DE59504502D1 (en) | 1994-07-18 | 1999-01-21 | Siemens Ag | CASTING ROLLER WEAR PROTECTIVE LAYER |
US6942013B2 (en) * | 1998-08-07 | 2005-09-13 | Lazar Strezov | Casting steel strip |
CA2306571A1 (en) | 1999-04-22 | 2000-10-22 | Daniel J. Cadotte | Continuous casting rolls and method of using |
JP3684136B2 (en) * | 2000-05-12 | 2005-08-17 | 新日本製鐵株式会社 | Drum for thin slab continuous casting machine and thin slab continuous casting method |
AU777752B2 (en) | 2000-05-12 | 2004-10-28 | Nippon Steel Corporation | Cooling drum for continuously casting thin cast piece and fabricating method and device therefor and thin cast piece and continuous casting method therefor |
DE10317666A1 (en) * | 2003-04-17 | 2004-11-04 | Km Europa Metal Ag | Casting roller for casting strips made of aluminum or aluminum alloys |
DE102004002124A1 (en) * | 2004-01-14 | 2005-08-11 | Km Europa Metal Ag | continuous casting and rolling |
WO2005072891A1 (en) * | 2004-01-30 | 2005-08-11 | Sumitomo Metal Industries, Ltd. | Continuous casting method for copper alloy |
-
2006
- 2006-03-09 DE DE102006011384.5A patent/DE102006011384B4/en not_active Expired - Fee Related
-
2007
- 2007-01-29 WO PCT/EP2007/000740 patent/WO2007101512A1/en active Application Filing
- 2007-01-29 EP EP07703099A patent/EP1991378A1/en not_active Withdrawn
- 2007-01-29 US US12/224,698 patent/US20090107648A1/en not_active Abandoned
- 2007-01-29 KR KR1020087019554A patent/KR20080108973A/en not_active Application Discontinuation
- 2007-01-29 JP JP2008557608A patent/JP2009529425A/en active Pending
- 2007-01-29 CN CNA2007800081806A patent/CN101394960A/en active Pending
- 2007-01-29 CA CA002642882A patent/CA2642882A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007101512A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2642882A1 (en) | 2007-09-13 |
CN101394960A (en) | 2009-03-25 |
WO2007101512A1 (en) | 2007-09-13 |
DE102006011384B4 (en) | 2019-09-05 |
DE102006011384A1 (en) | 2007-09-13 |
US20090107648A1 (en) | 2009-04-30 |
JP2009529425A (en) | 2009-08-20 |
KR20080108973A (en) | 2008-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102006011384B4 (en) | Roll for metalworking, in particular continuous casting roll | |
EP3228724B1 (en) | Tool steel, in particular hot-work steel, and steel object | |
DE2634633C2 (en) | Continuous casting mold made of a copper material, especially for continuous casting of steel | |
EP3414355B1 (en) | Aluminium-based coating for steel sheets or steel strips and method for the production thereof | |
EP1965939A1 (en) | Components of a steelworks, such as a continuous casting installation or a rolling mill, method for producing such a component and installation for creating or processing semifinished metallic products | |
DE102009023818A1 (en) | Antifriction bearing comprises components arranged under a bearing ring and roller body that rolls off on the bearing ring, where one of the components is equipped on its surface with a coating, which consists of a nickel-alloy | |
EP2393965B1 (en) | Die for continuous casting | |
LU83676A1 (en) | METHOD FOR DEPOSITING METAL LAYERS ON THE WALLS OF CHILLERS | |
CH658206A5 (en) | MOLD FOR STEEL CASTING. | |
AT390907B (en) | METHOD FOR PRODUCING A TUBE CHOCOLATE WITH A RECTANGULAR OR SQUARE CROSS SECTION | |
DE102009043594B4 (en) | Process for the electrochemical coating and incorporation of particles into the layer | |
WO2001083136A1 (en) | Mold wall, especially a broadside wall of a continuous casting mold for steel | |
DE102008046817A1 (en) | Coated sliding element, particularly coated sliding bearing for use in internal combustion engines, comprises surface having metal or metal alloy layer and reaction layer | |
DE102017003234A1 (en) | Body part for a passenger car, method for coating such a body part and method for producing a coating for such a body part | |
DE102005061135A1 (en) | Mold for a continuous casting plant and process for producing a mold | |
EP2180088B1 (en) | Method for electroplating hard chrome layers | |
DE112009000308T5 (en) | Spark-erosive coating method and thereby used green compact electrode | |
DE102007028824B3 (en) | Process for producing a sheet in a rolling mill | |
EP0125509B1 (en) | One-piece continuous casting mould and method of manufacturing it | |
DE10062490A1 (en) | Mold wall, in particular broad side wall of a continuous casting mold for steel | |
EP2743367B1 (en) | Submersible bath roller and method for producing same | |
DE4143015C2 (en) | current role | |
WO2008155317A1 (en) | Method for producing a sheet metal in a rolling train | |
DE4142952C1 (en) | ||
DE102011007391B3 (en) | Method for producing a cylinder of a printing machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080619 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SMS SIEMAG AG |
|
17Q | First examination report despatched |
Effective date: 20100322 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20111123 |