US20090107648A1 - 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 Roll Download PDFInfo
- Publication number
- US20090107648A1 US20090107648A1 US12/224,698 US22469807A US2009107648A1 US 20090107648 A1 US20090107648 A1 US 20090107648A1 US 22469807 A US22469807 A US 22469807A US 2009107648 A1 US2009107648 A1 US 2009107648A1
- Authority
- US
- United States
- Prior art keywords
- roll
- coating
- nickel
- continuous casting
- accordance
- 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.)
- Abandoned
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000011248 coating agent Substances 0.000 claims abstract description 53
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 24
- 239000000919 ceramic Substances 0.000 claims description 18
- 239000011651 chromium Substances 0.000 claims description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000470 constituent Substances 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
- 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
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-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
- 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 8
- 230000035882 stress Effects 0.000 description 7
- 238000004070 electrodeposition Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 210000003739 neck Anatomy 0.000 description 3
- 229910001149 41xx steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 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
- 230000008859 change Effects 0.000 description 1
- 230000002925 chemical effect Effects 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
- 230000004907 flux Effects 0.000 description 1
- 238000007654 immersion Methods 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
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 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
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- the invention concerns a roll for metal production and/or metal processing, especially a continuous casting roll, which has a roll body made of metal and a coating of wear-resistant material applied on the roll body, where the coating contains electrodeposited nickel and where the surface of the coating forms the working surface of the roll.
- the strand guide rolls have a great deal to do with the satisfactory operation of a continuous casting plant as well as with the quality of the cast product and the economy of the plant.
- the function of the strand guide rolls is to support, guide, bend, and convey the solidified strand after it has left the mold.
- the roll bodies and the bearings of the segmented rolls are subject to high thermal, mechanical, and corrosive chemical stresses.
- the thermal stress arises from direct contact of the surface of the roll body with the cast strand, which has a temperature of 800° C. to 1,200° C.
- the mechanical stress is the result of ferrostatic forces, bending and straightening forces, and drive forces that must be transferred from the roll to the strand.
- the rolls are subject to wear due to friction with the strand. Due to the large amounts of cooling water that are needed and the high temperatures in combination with aggressive chemical compounds, which are introduced, for example, by the use of casting flux, it is also necessary to take into account the corrosion characteristics and the corrosion protection of the materials and parts used for the roll.
- the rolls of a continuous casting plant can be produced from a heat-treatable steel as the base material (e.g., 21 CrMoV 511 V, 16 CrMo 44, 24 CrMo 5, and S 355), which is capable of absorbing the high mechanical stresses.
- this steel is usually less well suited for permanently withstanding the thermal and corrosive chemical stresses.
- buildup welding can be used to cover the surface of the roll body with a soft martensitic material.
- this technique is relatively cost-intensive.
- EP 1 582 279 A1 describes a similar solution.
- WO 96/02340 describes a casting roll that is furnished with an outer wear-resistant coating.
- DE 40 27 225 C2 discloses a method for producing a continuous casting roll that consists of a core of iron material covered with a jacket of wear-resistant material. A layer of copper or copper alloy is provided between the outer jacket and the core of iron material. To optimize the thermal conductivity of the roll, a nickel coating is electrodeposited on the layer of copper. This intermediate nickel coating is then covered with a wear-resistant cover layer of a nickel-chromium-boron alloy by buildup welding.
- U.S. Pat. No. 5,161,306 also proposes the application of a wear-resistant layer on a roll body that is coated with intermediate layers; in this case, the wear-resistant layer consists of chromium oxides (Cr 2 O 3 ).
- US 2002/0056539 A1 also proposes the application of a wear-resistant layer on a continuous casting roll; in this case, the wear-resistant layer is based on nickel and contains carbon, chromium, and molybdenum.
- JP62-183950 A1 JP62-230462 A, JP63-086856 A, JP60-030560 A, JP59-129754 A, and JP62-207549 A.
- the objective of the invention is to remedy the disadvantages described above and to create a roll, especially a continuous casting roll, which has sufficient strength and at the same time is capable of withstanding the thermal, abrasive mechanical, and corrosive chemical stresses that arise during the operation of the roll, with it being possible to operate the roll for the longest time possible and with little or no geometric change in the roll. At the same time, it must be possible to produce the roll at low cost.
- a further objective of the invention is to propose a corresponding method for producing a roll of this description.
- the solution to this problem by the invention is characterized by the fact that, besides electrodeposited nickel as the base material, the coating contains ceramic particles, which are carbides of titanium (Ti), tantalum (Ta), tungsten (W), zirconium (Zr), boron (B), chromium (Cr), and/or silicon (Si), or oxides of aluminum (Al), chromium (Cr), silicon (Si), beryllium (Be), or zirconium (Zr), where the amount of ceramic particles in the nickel or nickel alloy is 15-40 vol. %, and preferably 25-30 vol. %.
- ceramic particles which are carbides of titanium (Ti), tantalum (Ta), tungsten (W), zirconium (Zr), boron (B), chromium (Cr), and/or silicon (Si), or oxides of aluminum (Al), chromium (Cr), silicon (Si), beryllium (Be), or zirconium (Zr), where the amount of ceramic particles
- the invention is thus novel in relation to previously known solutions by virtue of the fact that the wear-resistant coating, whose surface forms the working surface of the roll, is applied by a galvanic, i.e., electrolytic, method.
- the thickness of the coating applied by the galvanic or electrolytic process is preferably 0.01 mm to 10 mm, and especially 0.05 mm to 2 mm.
- the coating consists of pure nickel. However, it is preferred that the coating contain other constituents besides nickel. Specifically, these other constituents besides nickel can be, for example, one or more of the constituents cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), and chromium (Cr).
- these other constituents besides nickel can be, for example, one or more of the constituents cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), and chromium (Cr).
- the coating consists of a nickel-cobalt alloy in which ceramic particles of silicon carbide are incorporated.
- the particle size of the ceramic particles is 1-5 ⁇ m. In another embodiment, the ceramic particles are much smaller, namely, 10 nm to 1,000 nm.
- the hardness of the surface of the coating is 300-500 HV1 (Vickers hardness), and preferably 350-450 HV1.
- a method for producing a roll for metal production and/or metal processing, especially a continuous casting roll involves the following steps:
- the proposal of the invention is thus no longer aimed at providing the base material of the strand guide roll with a soft martensitic surface layer that is welded on, as in the prior-art methods, but rather at applying a coating of nickel or a nickel alloy by electrodeposition.
- the thickness of the applied coating can be easily defined and varied by the residence time of the rolls in the electrodeposition bath.
- the electrodeposited coating is thin and effectively protects the base material of the roll from corrosive attack. At the same time, the coating is very hard and has good resistance to high temperatures and good resistance to scaling. The wear resistance of the continuous casting roll is reliably and inexpensively improved in this way. The proposed rolls thus have a longer service life, which results in a corresponding reduction of costs for the operator of a continuous casting plant.
- FIG. 1 shows a schematic side view of a continuous casting roll.
- FIG. 2 shows the detail Z from FIG. 1 .
- FIG. 3 is a schematic drawing of the setup of a galvanic or electrolytic coating system with two continuous casting rolls to be coated.
- FIG. 1 shows a continuous casting roll 1 , which consists of a roll neck 9 , which is of no further interest in the present discussion, and of a roll body 2 , which in the present embodiment is cylindrical.
- the roll body 2 has a coating 3 of wear-resistant material, the structure of which is illustrated in greater detail in FIG. 2 .
- the coating 3 has a coating thickness D, which can be, for example, 0.05 mm to 2.0 mm.
- the essential feature is that the surface 4 of the coating 3 is the working surface of the roll 1 . In the case of a continuous casting roll, the working surface has contact with the continuously cast strand, which is still hot, and is thus subject to high thermal, mechanical, and corrosive chemical stress.
- the coating 3 consists of nickel or a nickel alloy, which is applied to the roll body 2 galvanically (electrolytically) (in this connection, see FIG. 3 ).
- the surface is provided with a considerable proportion of ceramic particles 5 with a mean particle diameter d, which in one embodiment of the invention can vary within the range of 1-5 ⁇ m.
- d mean particle diameter
- an alternative embodiment provides for the use of nanoparticles, i.e., the diameter d in this case is within the range of 10 nm to 1,000 nm.
- FIG. 3 illustrates the basic procedure for producing the continuous casting roll 1 . It shows a coating bath 6 that contains a suitable plating solution for electrodeposition.
- the solution can be an acid, e.g., sulfuric acid (H 2 SO 4 ).
- An anode 7 is submerged in the bath. It consists of an ingot of nickel and constitutes the consumable electrode.
- two rolls 1 are also submerged in the coating bath.
- the roll necks 9 which are not to be coated, are covered with covers (not shown).
- the two rolls 1 constitute the cathode 8 .
- the anode 7 and cathode 8 are connected to a direct current source 10 , which can be regulated or automatically controlled by means that are already well known in themselves.
- the ceramic particles introduced in the coating make it possible to optimize the mechanical/technological properties of the nickel or nickel alloy coating for the each intended application.
- a continuous casting roll be provided with a coating that is chemically resistant and stable at high temperatures and has very low wear rates when subjected to abrasive stress, but at the same time can be economically processed during its manufacture.
- nickel compounds can be produced that have an average hardness of 350-450 HV1 at room temperature and can thus be worked with an acceptable degree of effort and at the same time have low wear rates even at higher temperatures.
- the nickel that is used is preferably high-purity nickel that has been compressively prestressed.
- an electrolytic surface treatment of the roll body is carried out, in which a high concentration of hard solid particles is incorporated in a ductile nickel matrix.
- This combination imparts very good wear resistance to the part to be protected, for the cast strand then no longer runs directly on the metal of the metal matrix but rather on the ceramic particles that protrude from the base contour of the roll surface.
- the continuous casting rolls can be used for all known applications, i.e., especially in plants for the continuous casting of carbon steel and stainless steel grades in ingots, round bars, sections, slabs, and thin slabs.
- the roll diameter (final diameter including the surface coating) of the strand guide roll is usually in the range of 80-350 mm.
Abstract
Description
- The invention concerns a roll for metal production and/or metal processing, especially a continuous casting roll, which has a roll body made of metal and a coating of wear-resistant material applied on the roll body, where the coating contains electrodeposited nickel and where the surface of the coating forms the working surface of the roll.
- The strand guide rolls have a great deal to do with the satisfactory operation of a continuous casting plant as well as with the quality of the cast product and the economy of the plant. The function of the strand guide rolls is to support, guide, bend, and convey the solidified strand after it has left the mold. In this connection, the roll bodies and the bearings of the segmented rolls are subject to high thermal, mechanical, and corrosive chemical stresses.
- The thermal stress arises from direct contact of the surface of the roll body with the cast strand, which has a temperature of 800° C. to 1,200° C. The mechanical stress is the result of ferrostatic forces, bending and straightening forces, and drive forces that must be transferred from the roll to the strand. In addition, the rolls are subject to wear due to friction with the strand. Due to the large amounts of cooling water that are needed and the high temperatures in combination with aggressive chemical compounds, which are introduced, for example, by the use of casting flux, it is also necessary to take into account the corrosion characteristics and the corrosion protection of the materials and parts used for the roll.
- It is well known that the rolls of a continuous casting plant can be produced from a heat-treatable steel as the base material (e.g., 21 CrMoV 511 V, 16 CrMo 44, 24
CrMo 5, and S 355), which is capable of absorbing the high mechanical stresses. However, this steel is usually less well suited for permanently withstanding the thermal and corrosive chemical stresses. To realize adequate resistance to high temperatures and corrosive chemical effects as well, it is known that buildup welding can be used to cover the surface of the roll body with a soft martensitic material. However, this technique is relatively cost-intensive. - A roll of this general type is known from
EP 1 555 074 A1 andEP 1 468 761 A1.EP 1 582 279 A1 describes a similar solution. WO 96/02340 describes a casting roll that is furnished with an outer wear-resistant coating. - DE 40 27 225 C2 discloses a method for producing a continuous casting roll that consists of a core of iron material covered with a jacket of wear-resistant material. A layer of copper or copper alloy is provided between the outer jacket and the core of iron material. To optimize the thermal conductivity of the roll, a nickel coating is electrodeposited on the layer of copper. This intermediate nickel coating is then covered with a wear-resistant cover layer of a nickel-chromium-boron alloy by buildup welding.
- U.S. Pat. No. 5,161,306 also proposes the application of a wear-resistant layer on a roll body that is coated with intermediate layers; in this case, the wear-resistant layer consists of chromium oxides (Cr2O3).
- US 2002/0056539 A1 also proposes the application of a wear-resistant layer on a continuous casting roll; in this case, the wear-resistant layer is based on nickel and contains carbon, chromium, and molybdenum.
- Other rolls with various wear-resistant coating materials are disclosed by JP62-183950 A1, JP62-230462 A, JP63-086856 A, JP60-030560 A, JP59-129754 A, and JP62-207549 A.
- The objective of the invention is to remedy the disadvantages described above and to create a roll, especially a continuous casting roll, which has sufficient strength and at the same time is capable of withstanding the thermal, abrasive mechanical, and corrosive chemical stresses that arise during the operation of the roll, with it being possible to operate the roll for the longest time possible and with little or no geometric change in the roll. At the same time, it must be possible to produce the roll at low cost. A further objective of the invention is to propose a corresponding method for producing a roll of this description.
- The solution to this problem by the invention is characterized by the fact that, besides electrodeposited nickel as the base material, the coating contains ceramic particles, which are carbides of titanium (Ti), tantalum (Ta), tungsten (W), zirconium (Zr), boron (B), chromium (Cr), and/or silicon (Si), or oxides of aluminum (Al), chromium (Cr), silicon (Si), beryllium (Be), or zirconium (Zr), where the amount of ceramic particles in the nickel or nickel alloy is 15-40 vol. %, and preferably 25-30 vol. %.
- The invention is thus novel in relation to previously known solutions by virtue of the fact that the wear-resistant coating, whose surface forms the working surface of the roll, is applied by a galvanic, i.e., electrolytic, method.
- The thickness of the coating applied by the galvanic or electrolytic process is preferably 0.01 mm to 10 mm, and especially 0.05 mm to 2 mm.
- In one embodiment of the invention, the coating consists of pure nickel. However, it is preferred that the coating contain other constituents besides nickel. Specifically, these other constituents besides nickel can be, for example, one or more of the constituents cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), and chromium (Cr).
- In this connection, in a preferred embodiment, the coating consists of a nickel-cobalt alloy in which ceramic particles of silicon carbide are incorporated.
- In accordance with a preferred embodiment, the particle size of the ceramic particles is 1-5 μm. In another embodiment, the ceramic particles are much smaller, namely, 10 nm to 1,000 nm.
- In accordance with an advantageous embodiment of the invention, not the least of the advantages realized in this way is that the hardness of the surface of the coating is 300-500 HV1 (Vickers hardness), and preferably 350-450 HV1.
- A method for producing a roll for metal production and/or metal processing, especially a continuous casting roll, involves the following steps:
- (a) production of a metal roll body;
- (b) immersion of the roll body in an electrodeposition bath;
- (c) electrodeposition of a coating on at least part of the surface of the roll body, where the coating consists at least partly of nickel, and the surface of the coating forms the working surface of the roll.
- The proposal of the invention is thus no longer aimed at providing the base material of the strand guide roll with a soft martensitic surface layer that is welded on, as in the prior-art methods, but rather at applying a coating of nickel or a nickel alloy by electrodeposition.
- In this connection, it is advantageous if a large number of rolls can be simultaneously coated in electrodeposition baths, so that the product costs per roll remain low. In addition, the thickness of the applied coating can be easily defined and varied by the residence time of the rolls in the electrodeposition bath.
- The electrodeposited coating is thin and effectively protects the base material of the roll from corrosive attack. At the same time, the coating is very hard and has good resistance to high temperatures and good resistance to scaling. The wear resistance of the continuous casting roll is reliably and inexpensively improved in this way. The proposed rolls thus have a longer service life, which results in a corresponding reduction of costs for the operator of a continuous casting plant.
- The drawings illustrate a specific embodiment of the invention.
-
FIG. 1 shows a schematic side view of a continuous casting roll. -
FIG. 2 shows the detail Z fromFIG. 1 . -
FIG. 3 is a schematic drawing of the setup of a galvanic or electrolytic coating system with two continuous casting rolls to be coated. -
FIG. 1 shows acontinuous casting roll 1, which consists of aroll neck 9, which is of no further interest in the present discussion, and of aroll body 2, which in the present embodiment is cylindrical. Theroll body 2 has acoating 3 of wear-resistant material, the structure of which is illustrated in greater detail inFIG. 2 . - The
coating 3 has a coating thickness D, which can be, for example, 0.05 mm to 2.0 mm. The essential feature is that thesurface 4 of thecoating 3 is the working surface of theroll 1. In the case of a continuous casting roll, the working surface has contact with the continuously cast strand, which is still hot, and is thus subject to high thermal, mechanical, and corrosive chemical stress. - The
coating 3 consists of nickel or a nickel alloy, which is applied to theroll body 2 galvanically (electrolytically) (in this connection, seeFIG. 3 ). - To increase especially the mechanical and thermal resistance of the
surface 4 of theroll 1, the surface is provided with a considerable proportion ofceramic particles 5 with a mean particle diameter d, which in one embodiment of the invention can vary within the range of 1-5 μm. However, an alternative embodiment provides for the use of nanoparticles, i.e., the diameter d in this case is within the range of 10 nm to 1,000 nm. -
FIG. 3 illustrates the basic procedure for producing thecontinuous casting roll 1. It shows a coating bath 6 that contains a suitable plating solution for electrodeposition. The solution can be an acid, e.g., sulfuric acid (H2SO4). Ananode 7 is submerged in the bath. It consists of an ingot of nickel and constitutes the consumable electrode. In the example illustrated here, tworolls 1 are also submerged in the coating bath. Theroll necks 9, which are not to be coated, are covered with covers (not shown). The tworolls 1 constitute the cathode 8. Theanode 7 and cathode 8 are connected to a direct current source 10, which can be regulated or automatically controlled by means that are already well known in themselves. - When the current flows, a metallic precipitate that consists of nickel is electrochemically deposited on the (uncovered) surface of the
rolls 1. The electric current removes metal ions from theconsumable electrode 7 and deposits them on the surface of therolls 1 by reduction. This causes theroll 1 to be coated uniformly and on all sides with nickel. The longer therolls 1 remain in the bath 6, the thicker thecoating 3 of nickel on theroll body 2 becomes. - The ceramic particles introduced in the coating make it possible to optimize the mechanical/technological properties of the nickel or nickel alloy coating for the each intended application. In the present situation, it is desired that a continuous casting roll be provided with a coating that is chemically resistant and stable at high temperatures and has very low wear rates when subjected to abrasive stress, but at the same time can be economically processed during its manufacture. For example, nickel compounds can be produced that have an average hardness of 350-450 HV1 at room temperature and can thus be worked with an acceptable degree of effort and at the same time have low wear rates even at higher temperatures.
- Electrolytically produced metal alloy dispersions based on nickel/cobalt, in which ceramic particles (preferably silicon carbide) with a particle size of 1-5 μm or ceramic nanoparticles with a size of 10 to 1,000 nm are incorporated, are especially well suited for the proposed application.
- The nickel that is used is preferably high-purity nickel that has been compressively prestressed.
- Preferably, therefore, an electrolytic surface treatment of the roll body is carried out, in which a high concentration of hard solid particles is incorporated in a ductile nickel matrix. This combination imparts very good wear resistance to the part to be protected, for the cast strand then no longer runs directly on the metal of the metal matrix but rather on the ceramic particles that protrude from the base contour of the roll surface. This greatly reduces the abrasion of the nickel and makes it possible to achieve the goal of coating strand guide rolls for a long service life, i.e., for at least 10 years of use.
- In this regard, it is also conceivable that several coatings can be electrodeposited on the roll body, and it is possible to apply the same coating material each time or to use different coating materials.
- The continuous casting rolls can be used for all known applications, i.e., especially in plants for the continuous casting of carbon steel and stainless steel grades in ingots, round bars, sections, slabs, and thin slabs. The roll diameter (final diameter including the surface coating) of the strand guide roll is usually in the range of 80-350 mm.
-
- 1 roll (continuous casting roll)
- 2 roll body
- 3 coating
- 4 surface of the coating
- 5 ceramic particle
- 6 coating bath
- 7 anode (positive terminal)
- 8 cathode (negative terminal)
- 9 roll neck
- 10 direct current source
- D thickness of the coating
- d particle size of the ceramic particle
Claims (9)
Applications Claiming Priority (3)
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 |
DE10200600110384.5 | 2006-03-09 | ||
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 |
---|---|
US20090107648A1 true US20090107648A1 (en) | 2009-04-30 |
Family
ID=38016849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/224,698 Abandoned US20090107648A1 (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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007028824B3 (en) * | 2007-06-20 | 2009-02-19 | Siemens Ag | Process for producing a sheet in a rolling mill |
DE102007028823A1 (en) * | 2007-06-20 | 2008-12-24 | 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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5161306A (en) * | 1989-08-17 | 1992-11-10 | Tocalo Co., Ltd. | Roll for use in heat treating furnace and method of producing the same |
US20020056539A1 (en) * | 1999-04-22 | 2002-05-16 | Dan Cadotte | Continuous casting rolls and method of using |
US20030000679A1 (en) * | 1998-08-07 | 2003-01-02 | Lazar Strezov | Casting steel strip |
Family Cites Families (18)
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 |
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 |
ATE174237T1 (en) | 1994-07-18 | 1998-12-15 | Siemens Ag | CASTING ROLL WEAR PROTECTION LAYER |
DE60140321D1 (en) | 2000-05-12 | 2009-12-10 | Nippon Steel Corp | COOLED CASTING ROLL FOR CONTINUOUS CASTING OF THIN PRODUCTS |
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 |
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 JP JP2008557608A patent/JP2009529425A/en active Pending
- 2007-01-29 CA CA002642882A patent/CA2642882A1/en not_active Abandoned
- 2007-01-29 KR KR1020087019554A patent/KR20080108973A/en not_active Application Discontinuation
- 2007-01-29 US US12/224,698 patent/US20090107648A1/en not_active Abandoned
- 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 CN CNA2007800081806A patent/CN101394960A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5161306A (en) * | 1989-08-17 | 1992-11-10 | Tocalo Co., Ltd. | Roll for use in heat treating furnace and method of producing the same |
US20030000679A1 (en) * | 1998-08-07 | 2003-01-02 | Lazar Strezov | Casting steel strip |
US20020056539A1 (en) * | 1999-04-22 | 2002-05-16 | Dan Cadotte | Continuous casting rolls and method of using |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
CA2642882A1 (en) | 2007-09-13 |
CN101394960A (en) | 2009-03-25 |
JP2009529425A (en) | 2009-08-20 |
DE102006011384B4 (en) | 2019-09-05 |
EP1991378A1 (en) | 2008-11-19 |
WO2007101512A1 (en) | 2007-09-13 |
KR20080108973A (en) | 2008-12-16 |
DE102006011384A1 (en) | 2007-09-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090107648A1 (en) | Roll for Metal Processing, in Particular a Continuous Casting Roll, and Method of Producing Such a Roll | |
JP5894721B2 (en) | Surface-treated metal plate and method for producing molded product using the surface-treated metal plate | |
Khusanboyev et al. | IMPROVING THE STRENGTH OF DETAILS BY CHROMING THE SURFACES | |
Du Toit et al. | Improving the life of continuous casting rolls through submerged arc cladding with nitrogen-alloyed martensitic stainless steel | |
KR20080089388A (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 | |
JP6274018B2 (en) | High strength steel parts and manufacturing method thereof | |
KR100760749B1 (en) | Chromium-plated member | |
AU744465B2 (en) | Process for the manufacture of a casting mould, and casting mould | |
JPH02160145A (en) | Cooling roll for producing rapidly cooled strip and production thereof | |
JPS6199650A (en) | Alloy for electrically conductive roll | |
JP2000218346A (en) | Continuous casting mold for steel and its manufacturing method | |
JP4579706B2 (en) | Articles with improved zinc erosion resistance | |
JP2000263190A (en) | Mold for continuous casting | |
RU2729674C1 (en) | Method of applying coating on steel sheet or steel strip and method of making press-hardened parts therefrom | |
JPS60145247A (en) | Mold for continuous casting and its production | |
JP7400766B2 (en) | Zinc-based electroplated steel sheet and its manufacturing method | |
JP2002226992A (en) | Mold for continuous casting | |
JP3847511B2 (en) | Continuous casting mold | |
JPS58212840A (en) | Casting mold for continuous casting | |
JPS6199653A (en) | Electrically conductive roll | |
JPS6199652A (en) | Electrically conductive roll | |
JP2009106976A (en) | Mold for continuous casting of steel material | |
JPH02217491A (en) | Electrically conductive roll for electroplating | |
JPS6341972B2 (en) | ||
JP2004237315A (en) | Mold for continuous casting |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SMS DEMAG AKTIENGESELLSCHAFT, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FEHLEMANN, GEREON;GIRGENSOHN, ALBRECHT;RZEPCZYK, MICHAEL;AND OTHERS;REEL/FRAME:021516/0393;SIGNING DATES FROM 20080729 TO 20080812 |
|
AS | Assignment |
Owner name: SMS SIEMAG AKTIENGESELLSCHAFT, GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AKTIENGESELLSCHAFT;REEL/FRAME:022816/0807 Effective date: 20090325 Owner name: SMS SIEMAG AKTIENGESELLSCHAFT,GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AKTIENGESELLSCHAFT;REEL/FRAME:022816/0807 Effective date: 20090325 |
|
AS | Assignment |
Owner name: SMS SIEMAG AKTIENGESELLSCHAFT, GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AG;REEL/FRAME:023725/0342 Effective date: 20090325 Owner name: SMS SIEMAG AKTIENGESELLSCHAFT,GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AG;REEL/FRAME:023725/0342 Effective date: 20090325 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |