EP0700340A1 - Procede de fabrication de cylindres d'impression a partir d'un noyau cylindrique metallique et un revetement en cuivre ou en un alliage de cuivre projete au plasma - Google Patents

Procede de fabrication de cylindres d'impression a partir d'un noyau cylindrique metallique et un revetement en cuivre ou en un alliage de cuivre projete au plasma

Info

Publication number
EP0700340A1
EP0700340A1 EP94915549A EP94915549A EP0700340A1 EP 0700340 A1 EP0700340 A1 EP 0700340A1 EP 94915549 A EP94915549 A EP 94915549A EP 94915549 A EP94915549 A EP 94915549A EP 0700340 A1 EP0700340 A1 EP 0700340A1
Authority
EP
European Patent Office
Prior art keywords
copper
cylinder
copper alloy
plasma
range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94915549A
Other languages
German (de)
English (en)
Other versions
EP0700340B1 (fr
Inventor
Heinrich Kuehn
Dieter Jaculi
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of EP0700340A1 publication Critical patent/EP0700340A1/fr
Application granted granted Critical
Publication of EP0700340B1 publication Critical patent/EP0700340B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/20—Curved printing plates, especially cylinders made of metal or similar inorganic compounds, e.g. plasma coated ceramics, carbides
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • 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
    • C23C4/134—Plasma spraying
    • 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
    • C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
    • 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 invention relates to a method for producing printing rollers with a core cylinder made of metal and a plasma-sprayed homogeneous, low-oxide and adhesive copper or copper alloy coating made of powdery materials.
  • copper-coated metal cylinders are of particular technical importance and can be found e.g. used as a gravure cylinder.
  • the copper layer can be machined and engraved either chemically, mechanically or using laser technology.
  • Electrochemical deposition is known for the application of copper for the stated purpose.
  • the environmental protection costs for the wastewater produced increase the cost of this process.
  • the production times for e.g. a layer thickness of 1 mm is about 8 to 12 hours and can be shortened in the interests of flexible production.
  • the coating must be homogeneous and mechanically machinable so that the surface quality is comparable to galvanic copper coatings. It must be possible to insert the engravings for printing rollers into this surface without loss of quality.
  • the metallic basic cylinder is preferably made of steel.
  • Other metals and metal alloys e.g. Aluminum or high-strength aluminum alloys can be used.
  • the basic cylinder can also be made with chemically or electrochemically deposited metals such as nickel, copper, etc. be coated.
  • the surface of the pressure cylinder is first subjected to a roughening process.
  • a roughening of the surface with sandblasting devices can preferably be provided, with mineral blasting material such as aluminum oxide, electro-corundum, silicon carbide, zirconium corundum, etc., being suitable as the abrasive.
  • Preferred blasting conditions are a blasting pressure in the range from 2 to 6 bar, a grain size in the range from 0.1 to 1.5 mm, preferably 0.5 to 1.2 mm, a distance from the nozzle to the nozzle treating surface in the range of 90 to 150 mm and a movement of the nozzle across the treated surface at a speed in the range of 0.5 to 1 m / sec.
  • the micro surface roughness R a of the base body treated in this way is in the range from 5 to 15 measured according to DIN 4768. The macro structure remains unchanged.
  • the roughening process is expediently followed by a cleaning process using compressed air or in a cleaning bath, if appropriate with the assistance of ultrasound.
  • the cleaning process ensures within the scope of the invention that any contaminants still present on the surface are effectively removed.
  • copper and copper alloys are applied by thermal spraying of powdery, spherical, microfine material with a particle diameter D BQ of 6 to 12 which is determined by the Cilas laser diffraction method.
  • the phosphorus content of the copper or copper alloy is in the range from 0.08 to 0.15% by weight and is determined photometrically, while the oxygen content is in the range from 0.2 to 0.3% and is determined by hot extraction in an inert gas stream.
  • a phosphorus content of preferably 0.10 to 0.12% by weight as a deoxidizer has positive effects on the oxidation behavior of the applied copper layer.
  • copper alloys can also be used, such as copper-zinc, copper-tin, copper-aluminum, copper-nickel or copper-nickel-zinc, which can additionally contain further alloy components such as iron, manganese, silicon or lead.
  • an inert gas or an inert gas mixture is used as the plasma gas, preferably argon in an amount in the range from 30 to 60 l / min.
  • the micro-grain of the application material means that the plasma torch can be operated at low electrical power.
  • the preferred electrical power of the plasma torch is 10 to 15 kW, particularly preferably 12 kW.
  • the burner is moved past the rotationally symmetrical base body at a distance in the range from 40 to 100 mm, preferably from 40 to 70 mm, at a speed of 10 to 100 mm / min. Under such conditions, an application rate in the range of 2 to 8 kg / h is achieved.
  • the pressure rollers provided for the coating are preferably cooled during the coating process in order to keep the oxide formation low and to prevent residual stresses both in the coating and in the base body.
  • CO 2 is preferably used in a finely crystalline form at a high pressure of approximately 40 to 60 bar.
  • Layers applied by the process according to the invention can have a layer thickness in the range from 50 to 2000 ⁇ m, preferably from 100 to 1000 ⁇ m, in a single operation, the thickness uniformity fluctuating only by 5 to 10%.
  • the application in one layer means that the layer has no oxidic intermediate layers.
  • FIG. 1 shows a schematic illustration according to which the coating method according to the invention can be carried out.
  • the plasma torch 1, into which the plasma gas 2 is introduced, is shown in detail with reference numerals.
  • the copper powder 3 is placed in a metering device 4, is introduced into the hot gas jet with a powder carrier gas 5 and is then deposited on the metallic surface 6.
  • the rotationally symmetrical body is set in rotation by a device 7.
  • carbonic acid 8 is used for cooling and non-sticking Particles emitted through fine crystals.
  • the plasma torch 1 is guided along the coating body by a moving device 9 in a transition with respect to the longitudinal axis. After this process, the metallic body is coated with a copper layer 10.
  • the coated metallic cylinders obtained by the production process according to the invention are particularly well suited for mechanical processing for use as engraved printing rollers, in particular the non-engraved, polished, shadow-free surface having a roughness R a ⁇ 0.1 mm (DIN 4768 ) having.
  • the closed surface can be galvanically or chemically coated with metals such as Nickel, chrome, copper, etc. and provided with metal alloys.
  • the surface of a steel pressure cylinder with a diameter of 1 13.2 mm and a length of 375 mm was roughened by sandblasting to apply the copper layer.
  • Electro-corundum was used as the blasting agent, an aluminum oxide powder with a content of 3% titanium dioxide and a grain size in the range from 1 to 1.2 mm.
  • the jet pressure was 2.5 bar with a jet spacing of 120 mm and with a jet nozzle diameter of 8 mm. After roughening, the surface was cleaned with cleaned compressed air.
  • the surface of the base body treated in this way was coated by plasma spraying with a copper powder with a grain size D 1 in the range from 8 to 10 ⁇ m.
  • Argon was used as the plasma gas.
  • the burner output was 12 kW and the burner was placed at a distance of 60 mm with a speed of 22 mm / min moved over the rotating base body at a speed of 320 rpm.
  • the surface of the base body was cooled in the C0 2 under a pressure of 60 bar in the area of the plasma flame and non-adhesive material is removed by blasting with CO 2 particles.
  • the copper layer produced in this way had a layer thickness of 1 mm.
  • the copper surface could be machined very well with polycrystalline diamond. After a reduction in diameter of 0.15 mm, a pore-free surface having a roughness R a was achieved of 0.3 mm.
  • the surface quality of the subsequent finishing by diamond film lapping was R a ⁇ 0.04 mm.
  • the roughness was measured according to DIN 4768.
  • the shape deviation of the finished cylinder was 0.01 mm, while its position deviation was 0.01 mm, in each case in accordance with DIN ISO 1 101.

Abstract

Un procédé permet de fabriquer des cylindres d'impression constitués d'un noyau cylindrique métallique pourvu d'un revêtement projeté au plasma en cuivre élémentaire ou en un alliage de cuivre qui se laisse aisément façonner par des moyens mécaniques en une surface fermée homogène d'une rugosité réduite et sur laquelle des gravures de haute qualité peuvent être inscrites. Le procédé se caractérise en ce qu'on applique du cuivre finement pulvérisé ou un alliage de cuivre en poudre avec des particules d'un diamètre moyen égal ou inférieur à 12 νm sur la surface du cylindre, sans couches intermédiaires oxydées, au moyen d'une torche au plasma à un faible niveau de puissance.
EP94915549A 1993-05-12 1994-04-27 Procede de fabrication de cylindres d'impression a partir d'un noyau cylindrique metallique et un revetement en cuivre ou en un alliage de cuivre projete au plasma Expired - Lifetime EP0700340B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4315813A DE4315813A1 (de) 1993-05-12 1993-05-12 Verfahren zur Herstellung von Druckwalzen aus einem metallischen Kernzylinder und einer Kupfer- oder Kupferlegierungsauflage
DE4315813 1993-05-12
PCT/EP1994/001322 WO1994026534A1 (fr) 1993-05-12 1994-04-27 Procede de fabrication de cylindres d'impression a partir d'un noyau cylindrique metallique et un revetement en cuivre ou en un alliage de cuivre projete au plasma

Publications (2)

Publication Number Publication Date
EP0700340A1 true EP0700340A1 (fr) 1996-03-13
EP0700340B1 EP0700340B1 (fr) 1997-08-13

Family

ID=6487875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94915549A Expired - Lifetime EP0700340B1 (fr) 1993-05-12 1994-04-27 Procede de fabrication de cylindres d'impression a partir d'un noyau cylindrique metallique et un revetement en cuivre ou en un alliage de cuivre projete au plasma

Country Status (3)

Country Link
EP (1) EP0700340B1 (fr)
DE (2) DE4315813A1 (fr)
WO (1) WO1994026534A1 (fr)

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DE19610015C2 (de) * 1996-03-14 1999-12-02 Hoechst Ag Thermisches Auftragsverfahren für dünne keramische Schichten und Vorrichtung zum Auftragen
JPH11505292A (ja) * 1995-03-17 1999-05-18 ヘキスト・アクチェンゲゼルシャフト セラミックの薄層を溶着させる熱溶着法および関連装置
DE19611735A1 (de) * 1996-03-25 1997-10-02 Air Liquide Gmbh Verfahren und Vorrichtung zur thermischen Bearbeitung eines Substrats
DE19653911C2 (de) * 1996-12-21 2003-03-27 Roland Man Druckmasch Druckmaschinenwalze mit einer farbfreundlichen Beschichtung der Ballenfläche des Walzenkerns, insbesondere Farbwalze
DE19705671A1 (de) * 1997-02-14 1998-08-20 Heidelberger Druckmasch Ag Druckmaschine mit einem korrosionsgeschützten Druckwerkszylinder
DE19740245A1 (de) * 1997-09-12 1999-03-18 Heidelberger Druckmasch Ag Thermisches Spritzverfahren für Trägerkörper und Vorrichtung zur Durchführung des Verfahrens
DE19814689B4 (de) * 1998-04-01 2006-05-24 Voith Paper Patent Gmbh Vorrichtung zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19837598C2 (de) * 1998-06-15 2001-10-31 Schrage Gmbh Metallspritz Und Bauelement, Bauteil aus mehreren miteinander verschweißten Bauelementen und Verfahren zur Herstellung von Bauelementen und Bauteilen
DE19837945A1 (de) * 1998-08-21 2000-02-24 Asea Brown Boveri Schaltanordnung und Verfahren zu ihrer Herstellung
US7645490B2 (en) * 2001-12-20 2010-01-12 Atlas Roofing Corporation Method and composition for coating mat and articles produced therewith
MXPA04006100A (es) 2001-12-20 2005-05-16 Atlas Roofing Corp Metodo y composicion para recubrir un estera y articulos producidos con la misma.
DE10214989A1 (de) * 2002-04-04 2003-10-30 Georg Frommeyer Druckzylinder zur Verwendung in einer Tiefdruckmaschine, sowie Verfahren zur Herstellung einer Oberflächenbeschichtung eines Druckzylinders
DE102004014308A1 (de) * 2004-03-24 2005-10-20 Roland Man Druckmasch Walzen und Zylinder mit einem Stahlkern für Offset-Druckmaschinen
US7353605B2 (en) * 2004-07-30 2008-04-08 Eastman Kodak Company Method for producing a metallic core for use in cylinder sleeves for an electrophotographic process
ATE546297T1 (de) * 2005-12-23 2012-03-15 Commw Scient Ind Res Org Herstellung von druckzylindern
EP1985459A3 (fr) * 2007-04-23 2009-07-29 Mdc Max Daetwyler AG Fabrication de formes d'impression à héliogravure
DE102007044653A1 (de) * 2007-09-18 2009-03-19 Hell Gravure Systems Gmbh & Co. Kg Verfahren, Vorrichtung und Tiefdruckform zur direkten Lasergravur
GR1007354B (el) * 2009-12-15 2011-07-20 Icr Ιωαννου Αβεε, Κατασκευη κυλινδρου βαθυτυπιας με βαση απο αλουμινιο
EP2719544B1 (fr) 2012-10-10 2015-12-16 Artio Sarl Procédé de fabrication de cylindres de rotogravure
EP3038830B1 (fr) * 2013-08-29 2017-06-14 Paramount International Services Ltd Procédé de fabrication de cylindres de rotogravure
CN109367236A (zh) * 2018-12-06 2019-02-22 东莞市上运激光制版有限公司 一种解决印刷线条粗细不均问题的陶瓷辊及其制备方法

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DE3821658A1 (de) * 1988-06-27 1989-12-28 Thyssen Guss Ag Verfahren zur herstellung von korrosionsbestaendigen und verschleissfesten schichten auf walzen von druckmaschinen

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Also Published As

Publication number Publication date
DE4315813A1 (de) 1994-11-17
EP0700340B1 (fr) 1997-08-13
WO1994026534A1 (fr) 1994-11-24
DE59403741D1 (de) 1997-09-18

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