EP0902100A1 - Procédé et appareil de pulvérisation thermique pour corps de support - Google Patents

Procédé et appareil de pulvérisation thermique pour corps de support Download PDF

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Publication number
EP0902100A1
EP0902100A1 EP98111596A EP98111596A EP0902100A1 EP 0902100 A1 EP0902100 A1 EP 0902100A1 EP 98111596 A EP98111596 A EP 98111596A EP 98111596 A EP98111596 A EP 98111596A EP 0902100 A1 EP0902100 A1 EP 0902100A1
Authority
EP
European Patent Office
Prior art keywords
base body
sprayed
support cylinder
pull
disc
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
EP98111596A
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German (de)
English (en)
Other versions
EP0902100B1 (fr
Inventor
Udo Tittgemeyer
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0902100A1 publication Critical patent/EP0902100A1/fr
Application granted granted Critical
Publication of EP0902100B1 publication Critical patent/EP0902100B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C23C4/185—Separation of the coating from the substrate

Definitions

  • the invention relates to a thermal spray process for the production of Carrier bodies and a device for performing the method, wherein the obtained carrier body used in particular in the graphics industry can be.
  • DE 41 40 768 C2 discloses a method for producing an offset printing form a metallic material for a forme cylinder of a printing press.
  • the plate-shaped blank is opened for printing plate production conventional type coated and exposed, after which the rectangular plate in a welding device by bending into a Bring hollow cylinder shape and clamped there in register.
  • the one on top of the other facing edges of the plate are seam welded together longitudinally, whereby the welding process is carried out in such a way that a weld seam is formed which is on the top and Bottom each has a concave shape.
  • the resulting printing form can be exposed to the plate-shaped blank coated and exposed on the forme cylinder.
  • a disadvantage of this manufacturing process is the fact that the length is stretched of the plate-shaped blank, which will later give the diameter, exactly parallel and with a correspondingly high accuracy of significantly better than 1/10 mm tailored. It also causes the introduction of heat when welding a longitudinal distortion of the material in the weld area. This elongation leads to a ripple on both sides along the weld. When using a sleeve produced in this way leads to the inevitable waviness in the seam area to the fact that air pockets occur, which are under external pressure on the sleeve this migrate, which causes the sleeve to twist on the cylinder. This results in the need for an additional operation subsequent calibration of such sleeves made according to this procedure has been.
  • DE 39 08 999 C2 discloses a cylinder body and a method for coating of the cylindrical body. It is proposed to have a cylindrical body like this to be provided with a seamless coating that as a coating material thixotropic multi-component material in the form of a propellant and inhibitor staggered, flowing foam with rotation and feed on the cylindrical body is applied approximately in a spiral.
  • a coating material thixotropic multi-component material in the form of a propellant and inhibitor staggered, flowing foam with rotation and feed on the cylindrical body is applied approximately in a spiral.
  • metallic aluminum or a carbon fiber reinforced plastic is used.
  • plastic sleeves also has disadvantages. For example in view of the considerably lower modulus of elasticity, these have to be increased Wall thickness can be made to be comparable to metallic sleeves Achieve seat strength. High wall thicknesses, in turn, for example in the Application of functional layers of higher temperature to be treated are exposed to temperature, resulting in loss of Dimensional accuracy and build up high internal stresses.
  • EP 0 421 145 A2 and EP 0 715 966 A1 are sleeve-shaped rubber blankets become known, which laterally on blanket cylinders from Have rotary printing presses installed.
  • the rubber coating is on Nickel sleeves applied.
  • the nickel sleeves are electroplated manufactured.
  • a mother cylinder is inserted into the nickel bath a thin nickel skin, which later after reaching the required wall thickness is rolled from the master cylinder.
  • the nickel sleeve production in this way has an increased power requirement and is extremely time consuming.
  • Thermal spray processes are used today to make the most diverse Components such as machine components, implants or structural components to coat a variety of materials.
  • the one with the coating Spraying methods and spray additives are used to a high degree application-specific.
  • Classic areas of application of thermal Spraying is the wear and corrosion protection, the repair coating as well as thermal or electrical insulation and often a combination of these Aims.
  • the metal or the metal alloy or the self-flowing alloy can be sprayed on in accordance with the flame spraying process.
  • the arc spraying process can also be used, as can the high-speed flame spraying process.
  • the material to be sprayed on can be an oxide or also carbides or ceramic-metal mixtures (cermets). In order to prepare the outer surface of the shaping base body for the thermal spray layer to be produced, this must be conditioned, for which purpose a blasting process is used.
  • a roughness of the lateral surface is brought about, which is characterized in that the elevations determining the roughness have a round contour.
  • the roughness of the outer surface of the shaping body is R Z 25 ⁇ m.
  • the material preferably used to produce the rough outer surface in the blasting process to be used is glass spheres.
  • the prevailing pressure in the blasting process for spraying the glass balls is between 2.5 and 3.5 bar.
  • the conditioned outer surface of the shaping base body is provided with a layer of a release agent which is up to 5 ⁇ m thick.
  • the release agent can be powdered graphite dust or silicone can also be used. It is also possible to use Teflon as a release agent.
  • the inventive device for performing the thermal Spraying process comprises a shaping body, which is a support cylinder as well as a pull-off disc, between the support cylinder and the Pull-off round a deflection bevel is formed, which is a constriction in the thermal applied spray layer generated.
  • a shaping body which is a support cylinder as well as a pull-off disc, between the support cylinder and the Pull-off round a deflection bevel is formed, which is a constriction in the thermal applied spray layer generated.
  • An extraction chamber is provided, which is equipped with a Pressure medium through the pull-off disc or through the support cylinder is pressurizable.
  • An annular gap between the support cylinder and The pull-off blank is made up of an end face of the support cylinder and the pull-off blank limited. The annular gap opens below the necking point of the thermal sprayed material in the area of the deflection chamfer.
  • both the support cylinder on the front side and the pull-off disc are on the front side provided with a taper.
  • Figure 1 is an arrangement for performing the reproduced method according to the invention.
  • An order station 1 comprises one on a machine frame 2 in Recording tips 3 and 4 rotatably mounted base body, one Includes support cylinder 5 and a pull-off blank (see FIG. 2).
  • the the is to be applied to the thermal spray coating which gives the shape of the base body the receiving tips 3 and 4 rotatably supported and can not by one here drive shown in detail can be set in rotation.
  • the support cylinder 5 is by means of a cylinder pin 6 in the receiving tip 3, the The end face of the cylinder faces the receiving tip 3.
  • the material to be sprayed on via a feed line 15 applies to the outer surface 8 of the base body.
  • the spray layer very ductile and elastic is very similar to solid material.
  • FIG. 2 shows in longitudinal section one of a spray layer to be applied thermally the basic body.
  • the shaping base body shown in longitudinal section comprises a Support cylinder 5, on the end face 7 of which the cylinder journal 6 is located.
  • the Support cylinder 5 has a cavity, the end faces and Shell surfaces 8 limited and penetrated by a guide rod 17.
  • To one annular end face 27 of the support cylinder 5 is a corresponding annular end face 28 of a pull-off disc 19.
  • the Pull-off disc 19, also penetrated by the guide rod 17 already mentioned, which is provided with a profile 18 is with a connection 20 for a Media equipped.
  • the connection 20 for the pressure medium comprises one Channel 21, which is in an expansion chamber 22 between the support cylinder 5 and the Pull-off disc 19 opens.
  • the expansion chamber 22 is shown in FIG Idle state 22.1 shown.
  • the through the mentioned end faces 27, 28 of Support cylinder 5 or pull-off disc 19 formed joint 29 forms an annular gap extending around the cylinder axis into a deflection chamfer 23 at the transition of the support cylinder 5 to the extraction disc 19 opens.
  • Deflection chamfer 23.1 is provided as well as a deflection chamfer 23.2 on the condenser side is provided, which in the abutting state of the support cylinder 5 and Pulling disc 19 form a continuous deflection chamfer 23, which leads to the formation of a Constriction 30 leads in the thermal spray layer 14.
  • the surface of the support cylinder 5 is conditioned by means of a blasting process.
  • blasting processes are used to roughen subsurface surfaces with the aim of optimal adhesion. This means making the surface as sharp as possible.
  • the spray layer 14 in order to ensure that the spray layer 14 can be easily removed, the roughness must be brought about with edges that are as round as possible.
  • the surface of the support cylinder 5 is therefore produced using a blasting method using glass balls of a defined size and a blasting pressure between 2.5 and 3.5 bar.
  • the average roughness depth R Z which is generated by this method, is R Z 25 ⁇ m.
  • the jacket surface 8 conditioned in this way is provided with a release agent provided what is applied in a film up to 5 ⁇ m thick.
  • a release agent such as graphite, silicone or Teflon, acts one mechanical clawing of the striking at high speed Spray particles against the base of the base body and prevents Baking together with the outer surface 8 of the support cylinder 5.
  • the applied Release agent supports the detachment of the spray layer 14 after it has cooled the outer surface 8 of the base body.
  • FIG. 3 shows a spray layer applied to the shaping base body shown with trained constriction 30.
  • the expansion chamber 22 located between the support cylinder 5 and the pull-off disc 19 is in its idle state 22.1, ie not acted upon by a pressure medium.
  • a constriction point 30 has formed in the spray layer 14.
  • the outer surface of the removal disc 19 was not subjected to any surface conditioning, which is why its roughness is higher than that of the outer surface 8 of the support cylinder 5. This means that the part of the spray layer 14 which is applied to the pull-off disc 19 of the shaping base body opposes the detachment with a higher resistance.
  • the expansion chamber 22, which is still in the idle state 22.1, is connected to the latter via the gap 29 defined by the contact area of the end face 27 or 28 of the support cylinder 5 or pull-off probe 19, which opens approximately centrally into the deflection chamfer 23.
  • FIG. 4 shows a part that has been detached due to the expansion chamber being acted upon coherent thermal spray coating.
  • the pull-off disc 19 is acted upon by a pressure medium, which via the Channel 21 acts on the expansion chamber 22.
  • a pressure medium which via the Channel 21 acts on the expansion chamber 22.
  • By building up Pressure in the expansion chamber 22 results in a surface pressure between the Support cylinder 5 and the pull-off disc 19, whereby the gap 29 between the End faces 27, 28 of the support cylinder 5 and pull-off 19 is widened.
  • the gap 29 passes the pressure medium under the coherent sleeve-shaped Spray layer 14 and applied to the underside 14.2.
  • the Deflection phase 23 In order to avoid a sudden impact on the spray layer 14 beginning formation of the gap 29 by the pressure medium is carried out by the Deflection phase 23 generates an additional length in the form of a constriction 30.
  • the area covering the support cylinder 5 is the spray layer 14 detached from the outer surface 8 of the support cylinder 5 while the part of the spray layer 14, which is located on the peel 19, because of the greater friction still adheres to the outer surface of the extraction disc 19.
  • Sleeves produced in this way without a seam have a ductile elastic Behavior on and are in the manner described above according to the invention can be produced considerably more cost-effectively than those known from the prior art elaborately deposited on a master cylinder Nickel sleeves.
  • the material thicknesses of the tubular bodies to be produced are adjustable between 0.1 and 0.6mm depending on feed and speed of the shaping basic body, in relation to the material discharge on Spray head 11.
  • Metal or sprayed metal alloys can be used, for example, for that Apply the necessary transfer layers using offset processes or pressers for Manufacture gravure applications. It is also used as a sleeve Printing form in printing machines possible to use instead of finite Printing plates.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP98111596A 1997-09-12 1998-06-24 Procédé et appareil de pulvérisation thermique pour corps de support Expired - Lifetime EP0902100B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19740245 1997-09-12
DE19740245A DE19740245A1 (de) 1997-09-12 1997-09-12 Thermisches Spritzverfahren für Trägerkörper und Vorrichtung zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0902100A1 true EP0902100A1 (fr) 1999-03-17
EP0902100B1 EP0902100B1 (fr) 2003-03-12

Family

ID=7842216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111596A Expired - Lifetime EP0902100B1 (fr) 1997-09-12 1998-06-24 Procédé et appareil de pulvérisation thermique pour corps de support

Country Status (3)

Country Link
EP (1) EP0902100B1 (fr)
JP (1) JPH11165478A (fr)
DE (2) DE19740245A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006326928B2 (en) * 2005-12-23 2012-04-19 Commonwealth Scientific And Industrial Research Organisation Manufacture of printing cylinders

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031164A1 (de) * 2005-07-04 2007-01-18 Koenig & Bauer Ag Oberfläche für bedruckstoffführende Teile einer Druckmaschine und Verfahren zur Herstellung einer solchen Oberfläche
DE102009007678B4 (de) * 2009-02-03 2010-12-16 Sächsische Walzengravur GmbH Hülse als Tiefdruckform
GB202218048D0 (en) 2022-12-01 2023-01-18 Rolls Royce Plc Freestanding ceramic tile manufacture

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112539A (en) * 1960-11-17 1963-12-03 Gen Motors Corp Forming articles by arc plasma spraying
GB1215184A (en) * 1968-07-02 1970-12-09 Chelton Forming Ltd Improvements in or relating to the making of hollow articles by metal spraying
GB1410169A (en) * 1971-06-17 1975-10-15 Johnson Matthey Co Ltd Method of making composite layered structures by spraying
FR2472033A1 (fr) * 1979-12-21 1981-06-26 Castolin Sa Fabrication de corps creux, par projection thermique, par exemple par chalumeau ou torche a plasma, d'alliages metalliques et/ou de matieres ceramiques
JPS57198256A (en) * 1981-05-27 1982-12-04 Isuzu Motors Ltd Production of thin-walled cylindrical body having smooth inside circumferential surface and abrasion resistance
DE3617833C1 (de) * 1986-05-27 1987-09-03 Mannesmann Ag Verfahren zum Herstellen von rotationssymmetrischen Hohlkoerpern
EP0305142A1 (fr) * 1987-08-28 1989-03-01 Corning Glass Works Procédé pour façonner une pièce à la géométrie désirée

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1599392A (en) * 1978-05-31 1981-09-30 Osprey Metals Ltd Method and apparatus for producing workable spray deposits
DE3046757C2 (de) * 1980-12-12 1985-09-12 W.C. Heraeus Gmbh, 6450 Hanau Tiefdruckzylinder
DE3447557C2 (de) * 1984-12-21 1987-05-14 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur Herstellung eines Hohlzylinders durch Zerstäuben einer Metallschmelze mittels Gaszerstäubung, sowie ein solcher Hohlzylinder
US4903597A (en) * 1988-10-24 1990-02-27 Lavalley Industries, Inc. Printing sleeves and methods for mounting and dismounting
DE9007784U1 (de) * 1989-03-18 1996-01-18 MAN Roland Druckmaschinen AG, 63075 Offenbach Druckmaschine
DE3942702C1 (en) * 1989-12-20 1990-12-20 Mannesmann Ag, 4000 Duesseldorf, De Spray compacting of tube blooms or tubes - using torch which atomises liq. metal stream using vertical force to increase rigidity
CA2038273A1 (fr) * 1990-06-29 1991-12-30 Paul A. Siemers Procede de fabrication de tubes au moyen d'un mandrin reutilisable
DE4208023C2 (de) * 1991-06-10 1994-04-07 Banning Gmbh J Verfahren und Vorrichtung zur Herstellung rotationssymmetrischer Teile aus Metall
DE4130264A1 (de) * 1991-09-12 1993-03-18 Roland Man Druckmasch Formzylinder in einer offsetdruckmaschine
DE4315813A1 (de) * 1993-05-12 1994-11-17 Hoechst Ag Verfahren zur Herstellung von Druckwalzen aus einem metallischen Kernzylinder und einer Kupfer- oder Kupferlegierungsauflage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112539A (en) * 1960-11-17 1963-12-03 Gen Motors Corp Forming articles by arc plasma spraying
GB1215184A (en) * 1968-07-02 1970-12-09 Chelton Forming Ltd Improvements in or relating to the making of hollow articles by metal spraying
GB1410169A (en) * 1971-06-17 1975-10-15 Johnson Matthey Co Ltd Method of making composite layered structures by spraying
FR2472033A1 (fr) * 1979-12-21 1981-06-26 Castolin Sa Fabrication de corps creux, par projection thermique, par exemple par chalumeau ou torche a plasma, d'alliages metalliques et/ou de matieres ceramiques
JPS57198256A (en) * 1981-05-27 1982-12-04 Isuzu Motors Ltd Production of thin-walled cylindrical body having smooth inside circumferential surface and abrasion resistance
DE3617833C1 (de) * 1986-05-27 1987-09-03 Mannesmann Ag Verfahren zum Herstellen von rotationssymmetrischen Hohlkoerpern
EP0305142A1 (fr) * 1987-08-28 1989-03-01 Corning Glass Works Procédé pour façonner une pièce à la géométrie désirée

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 046 (C - 153) 23 February 1983 (1983-02-23) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006326928B2 (en) * 2005-12-23 2012-04-19 Commonwealth Scientific And Industrial Research Organisation Manufacture of printing cylinders

Also Published As

Publication number Publication date
DE19740245A1 (de) 1999-03-18
EP0902100B1 (fr) 2003-03-12
DE59807441D1 (de) 2003-04-17
JPH11165478A (ja) 1999-06-22

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