EP0299944A2 - Verfahren zur Herstellung eines mehrschichtigen Zylinders sowie mit diesem Verfahren hergestellte Zylinder - Google Patents

Verfahren zur Herstellung eines mehrschichtigen Zylinders sowie mit diesem Verfahren hergestellte Zylinder Download PDF

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Publication number
EP0299944A2
EP0299944A2 EP88870121A EP88870121A EP0299944A2 EP 0299944 A2 EP0299944 A2 EP 0299944A2 EP 88870121 A EP88870121 A EP 88870121A EP 88870121 A EP88870121 A EP 88870121A EP 0299944 A2 EP0299944 A2 EP 0299944A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
layer
deposition
layers
multilayer
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Withdrawn
Application number
EP88870121A
Other languages
English (en)
French (fr)
Other versions
EP0299944A3 (de
Inventor
Dimitrios Totolidis
Adrien Magnée
Dimitri Coutsouradis
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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
Application filed by Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of EP0299944A2 publication Critical patent/EP0299944A2/de
Publication of EP0299944A3 publication Critical patent/EP0299944A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123—Spraying molten metal
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Definitions

  • the present invention relates to a method for manufacturing a multilayer cylinder and to the cylinder obtained, more particularly to a metallurgical rolling mill cylinder.
  • the first group includes the cylinders obtained by forging. These have a fine and resistant metallic structure which responds well to the mechanical stresses of rolling mills.
  • the aforementioned shaping that is to say forging, greatly limits the composition of the alloy used because the ability necessary for forging restricts the additions of alloying elements possible to increase the hardness. It follows that this type of rolls must undergo a heat treatment step subsequent to shaping, in order to give it sufficient hardness to limit wear during its use in the rolling mill.
  • the second comprising the cylinders obtained by casting, does not pose any problem as to the chemical composition and is not limited in addition elements.
  • these cylinders often have a coarse structure due to the shaping means, that is to say the casting and the core of the cylinder is not always able to withstand high stresses by shocks that the cylinder undergoes during its work at the rolling mill.
  • the method of manufacturing a multilayer cylinder of the present invention has the great advantage of eliminating the drawbacks mentioned above linked to the type of production of the cylinder.
  • multilayer cylinder must be taken in the sense of a cylinder of which at least one element, for example the envelope surface of the cylinder, is formed of at least one layer of deposited material.
  • the process for manufacturing a multilayer cylinder, object of the present invention is essentially characterized in that the layer or layers are formed by depositing one or more metals or metal alloys in the form of fine liquid droplets under an atmosphere controlled.
  • the controlled atmosphere is of the neutral type in the metallurgical or chemical sense of the term.
  • the liquid droplets are obtained by dispersion of a metal or of a molten metal alloy using a cold fluid.
  • This production technique allows the deposition of any metal or metallic alloy without limitation in its composition and gives the deposited layer a structure with remarkable mechanical properties, linked in particular to the absence of coarse dendritic structures for casting and to the absence of solidification macrosegregations.
  • the deposition is carried out on the surface of a cylinder which is in rotation and in translation relative to the flow of droplets.
  • one proceeds to the deposition of one or more successive layers on a worn cylinder, that is to say that one proceeds to the operation of reloading said cylinder, said cylinder being of the cast or forged type.
  • thermomechanical resistance properties can be selected according to their working location in the rolling mill and which are more reliable from the point of view of wear than the conventional cast envelopes obtained by disgorging or centrifugation.
  • the deposition of a layer forming part of a series of successive layers is controlled both from the point of view of thickness and chemical composition, so that after wear of the outer layer
  • the cylinder is able to be used again, but upstream from its initial position in the rolling mill.
  • the previous method defines a remarkable advantage of multilayer cylinders compared to conventional cylinders: a multilayer cylinder after wear of its outer layer can be used again on a rolling mill, but in an upstream location, that is to say towards the beginning of the rolling mill train from the place where it previously worked.
  • this raising of the train by the cylinder can be prepared in advance during the development of the cylinder, by controlling the composition and the thickness of the deposit forming each layer as a function of the location of the cylinder in the rolling mill and its future development.
  • the deposited layer or layers are subjected to a thermomechanical densification treatment.
  • the present invention also relates to the cylinders obtained by applying the method described above.
  • the multilayer cylinder obtained by implementing the method which is the subject of the present invention is essentially characterized in that it consists of at least two elements, in that the first element constitutes the core of the cylinder and that it supports the latter during its assembly in a rolling mill train and in that the outermost element with respect to at the longitudinal axis of the cylinder is formed by at least one layer deposited on the whole or only part of the surface of the core or of the previous layer.
  • Table 1 defines the chemical composition and the type of production of the elements forming the core of the cylinders.
  • Table 2 defines the chemical composition of the layers deposited by implementing the method of the present invention.
  • TABLE 2 No. Composition (in% by weight) Yes Mn VS Or Cr Mo V 1 0.2 0.3 0.8 - 1.7 0.2 0.1 2 0.43 0.95 2.84 1.41 17.8 1.07 0.21 3 0.95 0.98 3.37 4.42 1.88 0.31 4 0.49 0.69 1.35 0.76 11.8 2 0.13 5 0.53 0.79 1.95 0.7 13 3 0.3 6 2.2 1 3.3 4.4 4.7 2 -
  • Table 3 defines the combinations chosen for a total deposited thickness of 60 mm.
  • Table 4 gives the values of the hardnesses HV 50 kg obtained. TABLE 4 Deposited metal HV 50 kg 1 757 2 783 3 661 4 752 5 762 2 + 1 657 + 779 2 + 6 + 1 661 + ( ⁇ 715) + 776
  • the wear resistance varies according to the nature of the layer, in order to allow the latter maximum performance taking into account other stresses that can be envisaged.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP88870121A 1987-07-14 1988-07-12 Verfahren zur Herstellung eines mehrschichtigen Zylinders sowie mit diesem Verfahren hergestellte Zylinder Withdrawn EP0299944A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700873 1987-07-14
BE8700873A BE1000691A7 (fr) 1987-07-14 1987-07-14 Procede de fabrication de cylindre multicouches et cylindre obtenu.

Publications (2)

Publication Number Publication Date
EP0299944A2 true EP0299944A2 (de) 1989-01-18
EP0299944A3 EP0299944A3 (de) 1989-12-06

Family

ID=3882805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88870121A Withdrawn EP0299944A3 (de) 1987-07-14 1988-07-12 Verfahren zur Herstellung eines mehrschichtigen Zylinders sowie mit diesem Verfahren hergestellte Zylinder

Country Status (2)

Country Link
EP (1) EP0299944A3 (de)
BE (1) BE1000691A7 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012115A1 (en) * 1988-06-06 1989-12-14 Osprey Metals Limited Spray deposition
FR2659088A1 (fr) * 1990-03-02 1991-09-06 Gen Electric Procede pour la formation de disques constitues de deux alliages.
EP0574141A1 (de) * 1992-05-20 1993-12-15 Lucas Industries Public Limited Company Thixotropisch verformbares geschichtetes Material und Material

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810223C (de) * 1949-04-14 1951-08-06 Deutsche Edelstahlwerke Ag Verfahren zur Herstellung metallischer Formkoerper
GB910171A (en) * 1960-01-21 1962-11-14 Armco Int Corp Method and apparatus for continuously forming welded coated steel tubing
DE2705420A1 (de) * 1976-02-12 1977-08-18 Joseph Alexander Kovacs Verfahren und vorrichtung zum aufspruehen einer beschichtung aus geschmolzenem metall auf eine fortlaufende bahn
DE2928317A1 (de) * 1978-07-14 1980-01-31 Metal Leve Sa Verbessertes verfahren zum aufbringen von aluminiumlegierungen
GB1599392A (en) * 1978-05-31 1981-09-30 Osprey Metals Ltd Method and apparatus for producing workable spray deposits
EP0119036A1 (de) * 1983-03-09 1984-09-19 National Research Development Corporation Beschichten eines metallischen Substrates mit Metall
GB2146662A (en) * 1983-09-15 1985-04-24 Teledyne Ind Casting and coating with metallic particles
EP0188994A1 (de) * 1984-12-21 1986-07-30 MANNESMANN Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen eines metallischen Blockes
WO1987003012A1 (en) * 1985-11-12 1987-05-21 Osprey Metals Limited Production of metal spray deposits
EP0250355A1 (de) * 1986-05-27 1987-12-23 MANNESMANN Aktiengesellschaft Verfahren zum Herstellen von rotationssymmetrischen Hohlkörpern

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810223C (de) * 1949-04-14 1951-08-06 Deutsche Edelstahlwerke Ag Verfahren zur Herstellung metallischer Formkoerper
GB910171A (en) * 1960-01-21 1962-11-14 Armco Int Corp Method and apparatus for continuously forming welded coated steel tubing
DE2705420A1 (de) * 1976-02-12 1977-08-18 Joseph Alexander Kovacs Verfahren und vorrichtung zum aufspruehen einer beschichtung aus geschmolzenem metall auf eine fortlaufende bahn
GB1599392A (en) * 1978-05-31 1981-09-30 Osprey Metals Ltd Method and apparatus for producing workable spray deposits
DE2928317A1 (de) * 1978-07-14 1980-01-31 Metal Leve Sa Verbessertes verfahren zum aufbringen von aluminiumlegierungen
EP0119036A1 (de) * 1983-03-09 1984-09-19 National Research Development Corporation Beschichten eines metallischen Substrates mit Metall
GB2146662A (en) * 1983-09-15 1985-04-24 Teledyne Ind Casting and coating with metallic particles
EP0188994A1 (de) * 1984-12-21 1986-07-30 MANNESMANN Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen eines metallischen Blockes
WO1987003012A1 (en) * 1985-11-12 1987-05-21 Osprey Metals Limited Production of metal spray deposits
EP0250355A1 (de) * 1986-05-27 1987-12-23 MANNESMANN Aktiengesellschaft Verfahren zum Herstellen von rotationssymmetrischen Hohlkörpern

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012115A1 (en) * 1988-06-06 1989-12-14 Osprey Metals Limited Spray deposition
US5143139A (en) * 1988-06-06 1992-09-01 Osprey Metals Limited Spray deposition method and apparatus thereof
AU638676B2 (en) * 1988-06-06 1993-07-08 Osprey Metals Limited Spray deposition of layered composites
FR2659088A1 (fr) * 1990-03-02 1991-09-06 Gen Electric Procede pour la formation de disques constitues de deux alliages.
EP0574141A1 (de) * 1992-05-20 1993-12-15 Lucas Industries Public Limited Company Thixotropisch verformbares geschichtetes Material und Material
US5376462A (en) * 1992-05-20 1994-12-27 Lucas Industries Public Limited Company Thixoformable layered materials and articles made from them

Also Published As

Publication number Publication date
BE1000691A7 (fr) 1989-03-14
EP0299944A3 (de) 1989-12-06

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