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 PDF

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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
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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
Application number
US12/224,698
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English (en)
Inventor
Gereon Fehlemann
Albrecht Girgensohn
Michael Rzepczyk
Erich Hovestadt
Christian Geerkens
Axel Weyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to SMS DEMAG AKTIENGESELLSCHAFT reassignment SMS DEMAG AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GEERKENS, CHRISTIAN, HOVESTADT, ERICH, WEYER, AXEL, RZEPCZYK, MICHAEL, GIRGENSOHN, ALBRECHT, FEHLEMANN, GEREON
Publication of US20090107648A1 publication Critical patent/US20090107648A1/en
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AKTIENGESELLSCHAFT
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AG
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—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.

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)
US12/224,698 2006-03-09 2007-01-29 Roll for Metal Processing, in Particular a Continuous Casting Roll, and Method of Producing Such a Roll Abandoned US20090107648A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10200600110384.5 2006-03-09
DE102006011384.5A DE102006011384B4 (de) 2006-03-09 2006-03-09 Rolle zur Metallbearbeitung, insbesondere Stranggießrolle
PCT/EP2007/000740 WO2007101512A1 (fr) 2006-03-09 2007-01-29 Rouleau pour l'usinage des metaux, notamment rouleau de coulee continue ainsi que procede de fabrication d'un tel rouleau

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 (fr)
EP (1) EP1991378A1 (fr)
JP (1) JP2009529425A (fr)
KR (1) KR20080108973A (fr)
CN (1) CN101394960A (fr)
CA (1) CA2642882A1 (fr)
DE (1) DE102006011384B4 (fr)
WO (1) WO2007101512A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111438201A (zh) * 2020-04-01 2020-07-24 上海英佛曼纳米科技股份有限公司 一种带有耐磨损抗粗超度下降纳米涂层的冷轧张紧辊

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007028824B3 (de) * 2007-06-20 2009-02-19 Siemens Ag Verfahren zur Herstellung eines Blechs in einer Walzstraße
DE102007028823A1 (de) * 2007-06-20 2008-12-24 Siemens Ag Verfahren zur Herstellung eines Blechs in einer Walzstraße
CN102225598B (zh) * 2011-05-03 2014-04-30 蒙特集团（香港）有限公司 太阳能硅片线切割导辊及制作方法与专用镀膜机和电镀机
CN102978581A (zh) * 2012-11-06 2013-03-20 上海宏昊企业发展有限公司 热涨式铝导辊及其生产工艺
CN105856085B (zh) * 2016-03-30 2018-05-18 东北大学 用碳化硼制备研磨盘的方法
CN110253299A (zh) * 2019-06-06 2019-09-20 扬州市顺腾不锈钢照明器材有限公司 一种钢板开平机
JP2021063249A (ja) * 2019-10-11 2021-04-22 三菱マテリアル株式会社 コネクタ用端子材

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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

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JPS6030560A (ja) 1983-07-27 1985-02-16 Daido Steel Co Ltd 熱塊搬送用ロ−ル
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JPS62207549A (ja) 1986-03-06 1987-09-11 Hitachi Metals Ltd 連続鋳造用ガイドロ−ル
JPS62230462A (ja) 1986-04-01 1987-10-09 Nippon Steel Corp 連続鋳造用ロ−ル
JPS6386856A (ja) 1986-09-29 1988-04-18 Nippon Steel Corp 熱鋼片処理用溶射ロ−ル
EP0441636B1 (fr) * 1990-02-09 1994-06-22 Nihon Parkerizing Co., Ltd. Procédé de traitement de surface de matériaux métalliques contenant du titane
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JPH04333575A (ja) * 1991-01-29 1992-11-20 Nippon Parkerizing Co Ltd チタン含有金属材料上に複合被覆膜層を形成する方法
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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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111438201A (zh) * 2020-04-01 2020-07-24 上海英佛曼纳米科技股份有限公司 一种带有耐磨损抗粗超度下降纳米涂层的冷轧张紧辊

Also Published As

Publication number Publication date
KR20080108973A (ko) 2008-12-16
EP1991378A1 (fr) 2008-11-19
CN101394960A (zh) 2009-03-25
CA2642882A1 (fr) 2007-09-13
DE102006011384A1 (de) 2007-09-13
WO2007101512A1 (fr) 2007-09-13
DE102006011384B4 (de) 2019-09-05
JP2009529425A (ja) 2009-08-20

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