EP0911424B1 - Herstellung von selbsttragenden Verbundkörpern - Google Patents
Herstellung von selbsttragenden Verbundkörpern Download PDFInfo
- Publication number
- EP0911424B1 EP0911424B1 EP98120103A EP98120103A EP0911424B1 EP 0911424 B1 EP0911424 B1 EP 0911424B1 EP 98120103 A EP98120103 A EP 98120103A EP 98120103 A EP98120103 A EP 98120103A EP 0911424 B1 EP0911424 B1 EP 0911424B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- thermal spraying
- spraying
- base body
- powder particles
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- 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
Definitions
- the invention relates to a method for producing self-supporting Verbundkörpem.
- Composite bodies are becoming increasingly important in industry.
- composite bodies made of materials with different properties interesting.
- the material properties can also Profit to be added.
- EP 911 425 A1 with the same seniority describes a method for coating of substrate materials by means of thermal spraying, special Temperatures and gases are used.
- EP 911 426 A1 with the same seniority describes a method of manufacture of self-supporting molded parts by means of thermal spraying.
- CH 658 045 A5 describes a process for the production of glass molds for Hollow glass products are known in which a special nickel alloy is used Plasma spraying or flame spraying is applied.
- a thermal spraying method is known from US Pat. No. 3,165,570 in which particles are blown into a mold at high speed as a plasma jet.
- Thermal spraying for coating knows that as process variants autogenous flame spraying or the high speed flame spraying that Arc spraying, plasma spraying, detonation spraying and that Laser spraying.
- Thermal spray processes are essentially characterized by the fact that they enable evenly applied coatings.
- thermal Spray coatings can be applied by varying the Spray materials can be adapted to different requirements.
- the Spray materials can be in the form of wires, rods or as a powder are processed. With thermal spraying, a thermal Aftertreatment should be provided.
- the present invention has for its object a method for manufacturing to show self-supporting composite bodies, which is a simple type and Mode of manufacture enables and / or which contributes significantly to the To improve the quality and properties of composite bodies and thus theirs Area of application expanded, whereby a basic body of a material by thermal Spraying is coated, a powdery filler material by means of a Gas is passed onto the surface of the base body to be coated.
- the task is solved in that the gas jet during thermal Syringes have a pressure of 21 to 50 bar and that the powder Filler material is directed onto the surface of the base body to be coated, without the powder particles of the filler material being melted in the gas jet become.
- the powdered filler material is applied to the material to be coated Surface of the base body passed without powder particles of the Filler material are melted in the gas jet.
- the statement that the powder particles of the filler material are not in the gas jet are to be melted in the context of the present invention also means that the particles in the gas jet are essentially not melted. This can be ensured that the temperature of the gas jet below the melting point of the powder particles of the filler material. But even with Temperatures of the gas jet from 100 K to 200 K above the melting point of the Powder particles of the filler material can due to the extremely short residence time Particles in the gas jet melt or even in the range of milliseconds Melting of the powder particles can be prevented.
- the importance of the higher Gas temperatures or the advantage of heating the gas is that in hotter gases the speed of sound is higher and therefore the Particle speed becomes comparatively greater.
- the cold gas process has compared to conventional thermal processes Spraying a number of advantages.
- the thermal action and force action the surface of the substrate material is reduced, which results in unwanted Changes in the material properties of the substrate material prevented or can be reduced at least noticeably.
- largely Changes in the structure of the substrate material are prevented.
- the one with the Layers produced using cold gas spray processes have no or at least none pronounced texture, i.e. there is no preferred orientation of the individual grains or Crystals.
- the substrate is not heated by a flame or a plasma, so that no or only extremely minor changes to the base body and also no Warping of workpieces due to thermal stresses due to thermal Splashing occur.
- Components such as a ceramic tube can be made with one layer Metals, metal alloys, hard materials, ceramics and / or plastics be coated in order to make the pipe gas-tight and / or vacuum-tight.
- Another possibility is an electrically and / or magnetically conductive Apply layer.
- components made of ceramic, Glass, plastic or composite material (e.g. CFRP) over the sprayed-on layer be made conductive.
- components can be reinforced and thereby get a higher mechanical Resilience.
- a thin component that consists of an expensive one Material exists and / or has material-specific physical properties, with an inexpensive spray material, for example a metal, a metal alloy and / or a ceramic.
- an inexpensive spray material for example a metal, a metal alloy and / or a ceramic.
- Base body can be used as the starting material. This basic body will then by spraying on to the material of the base body different material on the inside and / or the outside on the necessary thickness reinforced. It is also possible that the base body has a smaller one Thickness than the layer sprayed by thermal spraying. On The base body can in particular be sprayed on by a layer or a coating by means of the cold spray process.
- the gas for thermal spraying can be nitrogen, helium, Argon, neon, krypton, xenon, a gas containing hydrogen carbon-containing gas, especially carbon dioxide, oxygen, an oxygen containing gas, air, hydrogen or mixtures of the aforementioned gases contain.
- Helium is also suitable for the gas carrying the powdered filler material a nitrogen, argon, neon, krypton, xenon, oxygen, a hydrogen containing Gas, a carbon-containing gas, especially carbon dioxide, hydrogen or Mixtures of the aforementioned gases and mixtures of these gases with helium.
- the proportion of helium in the total gas can be up to 90% by volume.
- A is preferred Helium content of 10 to 50 vol .-% observed in the gas mixture.
- the so produced Layers adhere very well to a wide variety of substrate materials, for example on metal, metal alloys, ceramics including glass, plastics and composite materials.
- the manufactured with the inventive method Coatings are of high quality and have an extremely low porosity on and have extremely smooth spray surfaces, so that there is usually a Rework is not necessary.
- the gases used according to the invention have a sufficient density and speed of sound to meet the required high Guarantees speeds of the powder particles for cold gas spraying can.
- the gas can contain inert and / or reactive gases. With the mentioned gases is the production of very dense and particularly uniform Coatings possible, which are also characterized by their hardness and strength.
- the layers have extremely low oxide contents.
- the gas jet can be heated to a temperature in the range between 30 and 800 ° C are, all known powdery spray materials are used can.
- the invention is particularly suitable for wettable powders made of metals, metal alloys, Hard materials, ceramics and / or plastics.
- the temperature of the Gas jets selected in the range between 300 and 500 ° C. These gas temperatures are particularly suitable for the use of reactive gases or reactive Gas constituents. As reactive gas or gas components are in particular Hydrogen admixtures, carbon-containing gases or nitrogenous gases mention.
- a gas jet with a pressure of 21 to 50 bar is used.
- working with higher gas pressures brings additional advantages because the Energy transfer in the form of kinetic energy is increased.
- excellent Spray results were achieved, for example, with gas pressures of around 35 bar.
- the High-pressure gas supply can be provided, for example, by that in Germany Patent application DE 197 16 414.5 described method or the there described gas supply system can be ensured.
- the powder particles can run at a speed accelerated from 300 to 1600 m / s. Suitable in the process according to the invention speeds of the powder particles between 1000 and 1600 m / s, particularly preferably between 1250 and 1600 m / s, since in this case the Energy transfer in the form of kinetic energy is particularly high.
- the powders used in the process according to the invention preferably have Particle sizes from 1 to 100 ⁇ m.
- a ceramic tube 1 is shown in FIG. 1 in FIG. Gas-tight around the ceramic tube 1 and to get vacuum-tight, it was - as shown in picture B - by means of thermal Spraying using the cold gas spraying method covered with a layer 2 of metal.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
- Übersicht und Einführung in das "Thermische Spritzen", Peter Heinrich, Linde-Berichte aus Technik und Wissenschaft, 52/1982, Seiten 29 bis 37,
- Thermisches Spritzen - Fakten und Stand der Technik, Peter Heinrich, Jahrbuch Oberflächentechnik 1992, Band 48, 1991, Seiten 304 bis 327, Metall-Verlag GmbH,
- aufgrund der Spritzschicht gasdichte und/oder vakuumdichte Verbundkörper,
- Verbundkörper mit elektrisch und/oder magnetisch leitfähiger Spritzschicht und
- Verbundkörper, deren Grundkörper durch die Spritzschicht verstärkt ist und die eine gewünschte mechanische Belastbarkeit aufweisen.
- Figur 1
- ein erfindunsgemäßen Verbundkörper aus Grundkörper und Schicht.
Claims (4)
- Verfahren zur Herstellung von selbsttragenden Verbundkörpem (1, 2) aus mindestens zwei unterschiedlichen Werkstoffen, wobei ein Grundkörper (1) eines Werkstoffes durch thermisches Spritzen beschichtet (2) wird, wobei ein pulverförmiger Zusatzwerkstoff mittels eines Gases auf die zu beschichtende Oberfläche des Grundkörpers (1) geleitet wird, dadurch gekennzeichnet, dass der Gasstrahl beim thermischen Spritzen einen Druck von 21 bis 50 bar aufweist und dass der pulverförmige Zusatzwerkstoff auf die zu beschichtende Oberfläche des Grundkörpers (1) geleitet wird, ohne dass die Pulverpartikel des Zusatzwerkstoffes im Gasstrahl geschmolzen werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Gas für das thermische Spritzen Stickstoff, Helium, Argon, Neon, Krypton, Xenon, ein Wasserstoff enthaltendes Gas, ein kohlenstoffhaltiges Gas, insbesondere Kohlendioxid, Sauerstoff, ein Sauerstoff enthaltendes Gas, Luft, Wasserstoff oder Mischungen der vorgenannten Gase enthält.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Temperatur des Gasstrahles beim thermischen Spritzen im Bereich zwischen 30 und 800 °C liegt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Pulverpartikel beim thermischen Spritzen auf eine Geschwindigkeit von 300 bis 1600 m/s beschleunigt werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19747384 | 1997-10-27 | ||
DE19747384A DE19747384A1 (de) | 1997-10-27 | 1997-10-27 | Herstellung von Verbundkörpern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0911424A1 EP0911424A1 (de) | 1999-04-28 |
EP0911424B1 true EP0911424B1 (de) | 2004-08-18 |
Family
ID=7846741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98120103A Expired - Lifetime EP0911424B1 (de) | 1997-10-27 | 1998-10-23 | Herstellung von selbsttragenden Verbundkörpern |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0911424B1 (de) |
DE (2) | DE19747384A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19747386A1 (de) * | 1997-10-27 | 1999-04-29 | Linde Ag | Verfahren zum thermischen Beschichten von Substratwerkstoffen |
DE19747385A1 (de) * | 1997-10-27 | 1999-04-29 | Linde Ag | Herstellung von Formteilen |
DE19959515A1 (de) * | 1999-12-09 | 2001-06-13 | Dacs Dvorak Advanced Coating S | Verfahren zur Kunststoffbeschichtung mittels eines Spritzvorganges, eine Vorrichtung dazu sowie die Verwendung der Schicht |
DE102007017753A1 (de) * | 2007-04-16 | 2008-10-23 | Innovaris Gmbh & Co. Kg | Herstellung großer Bauteile durch kinetisches Kaltgaskompaktieren von Werkstoffpartikeln |
DE102008001468B4 (de) | 2008-04-30 | 2013-09-19 | Airbus Operations Gmbh | Verfahren zum Beschichten eines Faserverbundbauteils für ein Luft- oder Raumfahrzeug und durch ein derartiges Verfahren hergestelltes Faserverbundbauteil |
DE102009048659B3 (de) * | 2009-09-29 | 2011-04-28 | Siemens Aktiengesellschaft | Transformatorkern |
DE102012020814A1 (de) | 2012-10-23 | 2014-04-24 | Linde Aktiengesellschaft | Verfahren und Vorrichtung zum Aufbringen eines Zusatzwerkstoffs auf ein Werkstück |
DE102020127874A1 (de) | 2019-11-08 | 2021-05-12 | Additive Space Gmbh | Verfahren zur Herstellung eines Behälters |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0911426A1 (de) * | 1997-10-27 | 1999-04-28 | Linde Aktiengesellschaft | Herstellung von Formteilen |
EP0911425A1 (de) * | 1997-10-27 | 1999-04-28 | Linde Aktiengesellschaft | Verfahren zum thermischen Beschichten von Substratwerkstoffen |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3165570A (en) * | 1962-08-22 | 1965-01-12 | Alexander T Deutsch | Refractory powder injection, process and apparatus |
CH658045A5 (en) * | 1982-05-12 | 1986-10-15 | Castolin Sa | Process for the production of glass moulds for machines for the production of hollow glass |
DE3806177A1 (de) * | 1988-02-26 | 1989-09-07 | Siemens Ag | Verfahren zum aufbringen von schichten aus hochtemperatur-supraleitendem material auf substrate |
WO1991019016A1 (en) * | 1990-05-19 | 1991-12-12 | Institut Teoreticheskoi I Prikladnoi Mekhaniki Sibirskogo Otdelenia Akademii Nauk Sssr | Method and device for coating |
EP0667810A1 (de) * | 1993-09-15 | 1995-08-23 | Societe Europeenne De Propulsion | Verfahren zur herstellung von verbund-materialien oder beschichtungen und vorrichtung zu seiner durchführung |
DE4413306C1 (de) * | 1994-04-16 | 1995-10-19 | Daimler Benz Aerospace Ag | Verfahren zur Verstärkung eines Bauteils und Anwendung des Verfahrens |
DE4427262C1 (de) * | 1994-07-30 | 1995-03-23 | Mtu Muenchen Gmbh | Verfahren und Vorrichtung zum Flammspritzen |
DE19520885C2 (de) * | 1995-06-08 | 1999-05-20 | Daimler Benz Ag | Verfahren zum thermischen Spritzen von Schichten aus Metallegierungen oder Metallen und seine Verwendung |
-
1997
- 1997-10-27 DE DE19747384A patent/DE19747384A1/de not_active Withdrawn
-
1998
- 1998-10-23 DE DE59811831T patent/DE59811831D1/de not_active Expired - Lifetime
- 1998-10-23 EP EP98120103A patent/EP0911424B1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0911426A1 (de) * | 1997-10-27 | 1999-04-28 | Linde Aktiengesellschaft | Herstellung von Formteilen |
EP0911425A1 (de) * | 1997-10-27 | 1999-04-28 | Linde Aktiengesellschaft | Verfahren zum thermischen Beschichten von Substratwerkstoffen |
Also Published As
Publication number | Publication date |
---|---|
DE19747384A1 (de) | 1999-04-29 |
DE59811831D1 (de) | 2004-09-23 |
EP0911424A1 (de) | 1999-04-28 |
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