EP1036856B1 - Qualitätssicherung beim thermischen Spritzen mittels rechnerischer Überarbeitung digitaler Bilder - Google Patents
Qualitätssicherung beim thermischen Spritzen mittels rechnerischer Überarbeitung digitaler Bilder Download PDFInfo
- Publication number
- EP1036856B1 EP1036856B1 EP00105043A EP00105043A EP1036856B1 EP 1036856 B1 EP1036856 B1 EP 1036856B1 EP 00105043 A EP00105043 A EP 00105043A EP 00105043 A EP00105043 A EP 00105043A EP 1036856 B1 EP1036856 B1 EP 1036856B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- quality
- thermal spraying
- data sets
- sprayed layer
- geometric surface
- 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
Definitions
- the invention relates to a method for thermal spraying to produce a Spray coating on the surface of a substrate, wherein by means of a digital At least one of the quality of the sprayed layer influencing feature of the thermal spraying process detected, controlled and / or monitored.
- the invention further relates to a system for quality assurance in the production of a Spray coating on the surface of a substrate by means of a thermal Spray method comprising a digital camera for detection, control and / or Monitoring at least one affecting the quality of the sprayed layer Feature of the thermal spraying process.
- thermal spraying usually an optionally on or molten filler material using a gas or gas mixture directed to the surface of the substrate to be coated.
- Such parameters are for example the Gas flows (carrier gas and / or possibly fuel gas), the currents, the Spray distance, the spray angle (angle between spray jet and substrate surface), the relative velocity of the spray jet to the substrate surface, the Introducing the filler material, the amount of spray powder or the wire feed speeds Etc.
- thermal spraying for coating come in Scope of the invention in principle all known process variants into consideration like the autogenous flame spraying, the high-speed flame spraying, the Plasma spraying, arc spraying, detonation spraying or laser spraying, but also the variant of the thermal called cold gas spraying Spritzens, a kind of advancement of high-speed flame spraying (for example described in European patent EP 0 484 533 B1).
- cold gas spraying a filler material is used in powder form, wherein the powder particles are not melted in the gas jet during cold gas spraying, but the temperature of the gas jet below the melting point of the filler particles lies.
- German patent application 198 20 195.8 by detecting, controlling and / or monitoring the quality of the sprayed coating influencing features of the thermal spraying process leads to a In terms of effort relatively simple, but extremely efficient quality assurance for thermal spraying.
- the reproducibility of sprayed layers based on a rating of quality characteristics or parameters and / or sizes of Spraying process over image standards of this diagnostics ensures and the spray coatings be brought to consistent quality very quickly. It is important that an impairment of the thermal spraying process or damage the sprayed layer by the detection, control and / or monitoring of Quality features due to the purely optical access in any case excluded is.
- the characteristic of the image in the reflow zone is identical with the earlier one.
- the capture, control and / or monitoring with the digital camera can be used for Control and, where appropriate, to optimize one or more parameters be used.
- Digital technology makes it easy to capture Control and / or monitoring the quality of the spray coating serving Records made visible immediately during the current injection process and / or be evaluated and so take place an optimizing control of Spritzparametem can.
- the optimization of the parameters contributes to the economy of the thermal spraying process, as an inefficiently high consumption of one or several substances required in the thermal spraying process (e.g. Filler materials) can be avoided and thus a saving can be achieved.
- the present invention is based on the object, the aforementioned method and further develop the aforementioned systems, wherein the arithmetic Revision and / or alienation is further developed and improved. Especially The information underlying the diagnosis should be as extensive as possible kept low or reduced, so that the handling, speed and / or data storage is simplified.
- the object is achieved with respect to the system by the subject matter of claim 8. They are means to Detection of the symmetric or geometric surface body by means of for the respective geometric form of characteristic features as data set or Records exist using this record or these records the at least one influencing the quality of the sprayed layer feature of thermal spraying process detected, controlled and / or monitored.
- the symmetry of the geometric sheet comprises within the scope of the invention Axial symmetries and rotational symmetries.
- the one or more symmetrical geometric Surface body based on characteristic for the respective geometric shape Characteristics recorded as a record or records and via this record or via these datasets that influence at least one quality of the sprayed layer Detected feature of the thermal spraying process, controlled and / or monitored.
- symmetric geometric surface bodies are in particular circles, Squares, rectangles, parallelograms and / or ellipses used. It will be Ellipses preferably used, since usually arise oval structures due to their similarity in the contour with ellipses easily and relatively accurately are.
- the mathematical revision and / or alienation is preferred by means of a Contour detection algorithm, by means of a representation in gradient levels and / or carried out by means of a gradient-emphasized, reduced on bit level representation.
- the at least one influencing the quality of the sprayed layer feature of Thermal spraying process can the spraying process itself and / or the case relate to used spray gun.
- the symmetrical geometric surface bodies or preferably their datasets can be used to control and if necessary to optimize one or more parameters be used.
- the symmetrical geometric surface body or prefers their datasets to document one or more the quality of Injection-influencing characteristics and / or the injection process itself be used.
- the invention ensures the quality assurance of a diagnosis, which on relative (with regard to the large number of parameters during thermal spraying) Low data volumes based on and for the injection process or for the Sprayer is based on meaningful and unambiguous data.
- the image sequence is an inventive computational revision and / or Based on alienation.
- the computationally revised or alienated image representation leads to a data record one or more ellipses used for quality assurance purposes Spray process (in the broader sense) both the spray gun and the spray process characterize itself (in the narrower sense).
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)
- Application Of Or Painting With Fluid Materials (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
- am Beispiel des Plasmabrenners (Plasmaspritzen):
- Zustand der Elektroden,
- Enthalpieänderungen im Freistrahl und
- die Enthalpieverteilung im Freistrahl
- am Beispiel des HVOF-Brenners (Hochgeschwindigkeits-Flammspritzen):
- Geschwindigkeit des ausströmenden Gases (Abstand der Überschallknoten),
- Enthalpieänderungen im Freistrahl und
- die Enthalpieverteilung im Freistrahl.
- Aufschmelzverhalten,
- Apertur,
- Schwerpunkt und
- Richtung
- Figur:
- die einzelne Stufen einer erfindungsgemäßen Bildbearbeitung zur Qualitätssicherung beim thermischen Spritzen.
- vertikale Position des Ellipsenschwerpunktes,
- horizontale Position des Ellipsenschwerpunktes,
- Länge der Halbachse 1,
- Länge der Halbachse 2 und
- Winkel einer der Halbachsen zur Horizontalen.
Claims (10)
- Verfahren zum thermischen Spritzen zur Erzeugung einer Spritzschicht auf der Oberfläche eines Substrates, wobei mittels einer digitalen Kamera Bilder des Plasma-Jets und/oder des Partikelstrahls aufgenommen werden, dadurch gekennzeichnet, dass in den Bildern mittels rechnerischer Überarbeitung und/oder Verfremdung mindestens ein Bereich gleicher Intensität und/oder mindestens ein Bereich innerhalb eines bestimmten Intensitätsintervalls einem oder mehreren symmetrischen geometrischen Flächenkörpern zugeordnet wird und dass der oder die symmetrischen geometrischen Flächenkörper anhand von für die jeweilige geometrische Form charakteristischen Merkmalen als Datensatz oder Datensätze erfaßt werden und über diesen Datensatz oder über diese Datensätze zumindest ein die Qualität der Spritzschicht beeinflussendes Merkmal des thermischen Spritzprozesses erfaßt, kontrolliert und/oder überwacht wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als symmetrische geometrische Flächenkörper Kreise, Quadrate, Rechtecke, Parallelogramme und/oder bevorzugt Ellipsen eingesetzt werden.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass voneinander unabhängige charakteristische Merkmale als Datensatz für die jeweilige geometrische Form erfaßt werden.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die rechnerische Überarbeitung und/oder Verfremdung über einen Konturerfassungsalgorithmus, über eine Darstellung in Gradientenstufen und/oder über eine gradientenbetonte, auf Bitebene reduzierte Darstellung erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das zumindest eine die Qualität der Spritzschicht beeinflussende Merkmal des thermischen Spritzprozesses den Spritzprozess und/oder den Spritzapparat betrifft.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die symmetrischen geometrischen Flächenkörper oder bevorzugt deren Datensätze zur Regelung und gegebenenfalls zur Optimierung eines oder mehrerer Parameter verwendet werden.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die symmetrischen geometrischen Flächenkörper oder bevorzugt deren Datensätze zur Dokumentation eines oder mehrerer die Qualität der Spritzschicht beeinflussenden Merkmale und/oder des Spritzprozesses an sich verwendet werden.
- Anlage zur Qualitätssicherung bei der Erzeugung einer Spritzschicht auf der Oberfläche eines Substrates mittels eines thermischen Spritzverfahrens umfassend eine digitale Kamera zur Aufnahme von Bildern des Plasma-Jets und/oder des Partikelstrahls, dadurch gekennzeichnet, dass Mittel zur Zuordnung mindestens eines Bereichs gleicher Intensität und/oder mindestens eines Bereichs innerhalb eines bestimmten Intensitätsintervalls in den Bildern zu einem oder mehreren symmetrischen geometrischen Flächenkörpern mittels rechnerischer Überarbeitung und/oder Verfremdung vorgesehen sind und dass Mittel zur Erfassung des oder der symmetrischen geometrischen Flächenkörper anhand von für die jeweilige geometrische Form charakteristischer Merkmale als Datensatz oder Datensätze vorhanden sind, wobei über diesen Datensatz oder über diese Datensätze das zumindest ein die Qualität der Spritzschicht beeinflussendes Merkmal des thermischen Spritzprozesses erfasst, kontrolliert und/oder überwacht wird.
- Anlage nach Anspruch 8, dadurch gekennzeichnet, dass die Anlage so konzipiert ist, daß die symmetrischen geometrischen Flächenkörper oder bevorzugt deren Datensätze zur Regelung und gegebenenfalls zur Optimierung eines oder mehrerer Parameter verwendet werden.
- Anlage nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Anlage Mittel zur Verwendung der symmetrischen geometrischen Flächenkörper oder bevorzugt deren Datensätze zur Dokumentation eines oder mehrerer die Qualität der Spritzschicht beeinflussenden Merkmale und/oder des Spritzprozesses an sich umfasst.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19910892A DE19910892A1 (de) | 1999-03-11 | 1999-03-11 | Qualitätssicherung beim thermischen Spritzen mittels rechnerischer Überarbeitung oder Verfremdung digitaler Bilder |
| DE19910892 | 1999-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1036856A1 EP1036856A1 (de) | 2000-09-20 |
| EP1036856B1 true EP1036856B1 (de) | 2005-08-17 |
Family
ID=7900626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00105043A Expired - Lifetime EP1036856B1 (de) | 1999-03-11 | 2000-03-09 | Qualitätssicherung beim thermischen Spritzen mittels rechnerischer Überarbeitung digitaler Bilder |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7043069B1 (de) |
| EP (1) | EP1036856B1 (de) |
| AT (1) | ATE302293T1 (de) |
| AU (1) | AU776428B2 (de) |
| DE (2) | DE19910892A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020109648A1 (de) | 2020-04-07 | 2021-10-07 | Jochen Zierhut | Verfahren zur optischen Qualitätskontrolle beim Laserauftragsschweißen |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10244037A1 (de) * | 2002-09-21 | 2004-04-08 | Mtu Aero Engines Gmbh | Verfahren zur Beschichtung eines Werkstücks |
| US20070031591A1 (en) * | 2005-08-05 | 2007-02-08 | TDM Inc. | Method of repairing a metallic surface wetted by a radioactive fluid |
| PT103382B (pt) * | 2005-11-11 | 2008-09-29 | Jose Carlos Brito Lopes | Instrumento para aplicação de uma substância líquida para revestimento em filme e sua utilização na medição das características de aplicabilidade de um filme de revestimento |
| CA2579773A1 (en) * | 2006-04-19 | 2007-10-19 | Sulzer Metco Ag | A method for the determination of process parameters in a thermal spraying process |
| KR100860473B1 (ko) * | 2007-04-18 | 2008-09-26 | 에스엔유 프리시젼 주식회사 | 플라즈마 모니터링장치 |
| DE102008048262B4 (de) * | 2008-09-22 | 2021-03-18 | Linde Gmbh | Verfahren und Vorrichtung zur Bestimmung des Einschmelzgrads einer thermisch gespritzten Oberfläche sowie Verfahren und Vorrichtung zum automatischen Einschmelzen einer thermisch gespritzten Oberfläche |
| FR2963023B1 (fr) * | 2010-07-21 | 2013-03-08 | Messier Dowty Sa | Procede pour anticiper le risque de defauts dans un revetement depose par projection thermique |
| US20130156967A1 (en) * | 2011-12-16 | 2013-06-20 | Christopher Michaluk | Spray rejuvenation of sputtering targets |
| CN103184404A (zh) * | 2011-12-31 | 2013-07-03 | 上海沪能防腐隔热工程技术有限公司 | 一种移动式自动金属喷涂设备 |
| US11745201B2 (en) * | 2012-06-11 | 2023-09-05 | General Electric Company | Spray plume position feedback for robotic motion to optimize coating quality, efficiency, and repeatability |
| WO2014110486A1 (en) | 2013-01-14 | 2014-07-17 | Blair Taylor K | Acoustic analysis of component having engineered internal space for fluid flow |
| DE102013223688A1 (de) * | 2013-11-20 | 2015-05-21 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum automatisierten Aufbringen einer Spritzbeschichtung |
| US10241091B2 (en) | 2015-06-04 | 2019-03-26 | Rolls-Royce Corporation | Diagnosis of thermal spray gun ignition |
| US10724999B2 (en) | 2015-06-04 | 2020-07-28 | Rolls-Royce Corporation | Thermal spray diagnostics |
| DE102015112540A1 (de) | 2015-07-30 | 2017-02-16 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zum Beschichten einer Oberfläche |
| TWI571841B (zh) * | 2016-01-05 | 2017-02-21 | 揚昇照明股份有限公司 | 具有辨識及展示物品的功能的電子裝置及其辨識物品的方法 |
| EP3336536B1 (de) | 2016-12-06 | 2019-10-23 | Rolls-Royce Corporation | Systemsteuerung basierend auf akustischen signalen |
| EP3586973B1 (de) | 2018-06-18 | 2024-02-14 | Rolls-Royce Corporation | Systemsteuerung basierend auf ton- und bildsignalen |
| CN116171962B (zh) * | 2023-03-23 | 2024-03-08 | 广东省农业科学院植物保护研究所 | 一种植保无人机的高效对靶喷雾调控方法及系统 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620491A (en) * | 1984-04-27 | 1986-11-04 | Hitachi, Ltd. | Method and apparatus for supervising combustion state |
| DE3430383A1 (de) * | 1984-08-17 | 1986-02-27 | Plasmainvent AG, Zug | Plasmaspritzbrenner fuer innenbeschichtungen |
| DE3710365A1 (de) * | 1987-03-28 | 1988-10-13 | Messerschmitt Boelkow Blohm | Verfahren zur reproduzierbaren bildung von materialschichten und/oder behandlung von halbleiter-materialschichten |
| US5047612A (en) * | 1990-02-05 | 1991-09-10 | General Electric Company | Apparatus and method for controlling powder deposition in a plasma spray process |
| US5171613A (en) * | 1990-09-21 | 1992-12-15 | Union Carbide Chemicals & Plastics Technology Corporation | Apparatus and methods for application of coatings with supercritical fluids as diluents by spraying from an orifice |
| US5171393A (en) * | 1991-07-29 | 1992-12-15 | Moffat William A | Wafer processing apparatus |
| RU2032280C1 (ru) * | 1992-02-18 | 1995-03-27 | Инженерный центр "Плазмодинамика" | Способ управления плазменным потоком и плазменное устройство |
| EP0734325B1 (de) * | 1993-12-17 | 1997-12-29 | Minnesota Mining And Manufacturing Company | Ablationsabbildung durch quasikontaktlithographie |
| US5518178A (en) * | 1994-03-02 | 1996-05-21 | Sermatech International Inc. | Thermal spray nozzle method for producing rough thermal spray coatings and coatings produced |
| JPH08269672A (ja) * | 1995-03-30 | 1996-10-15 | Toshiba Corp | 溶射皮膜の評価方法および装置 |
| US5658796A (en) | 1995-06-07 | 1997-08-19 | Seprachem, Inc. | Optical resolution of alkyl chroman-2-carboxylates |
| US5757498A (en) * | 1996-05-30 | 1998-05-26 | Klein, Ii; Richard J. | Optical spray coating monitoring system and method |
| US6001426A (en) * | 1996-07-25 | 1999-12-14 | Utron Inc. | High velocity pulsed wire-arc spray |
| EP0837305A1 (de) * | 1996-10-21 | 1998-04-22 | Sulzer Metco AG | Einrichtung sowie Verfahren zur Überwachung des Beschichtungsprozesses einer thermischen Beschichtungsvorrichtung |
| DE19820195A1 (de) * | 1998-05-06 | 1999-11-11 | Linde Ag | Qualitätssicherung beim thermischen Spritzen |
| US6190727B1 (en) * | 1998-10-30 | 2001-02-20 | Georgia-Pacific Corporation | Liquid coating spray applicator and method providing automatic spread rate control |
-
1999
- 1999-03-11 DE DE19910892A patent/DE19910892A1/de not_active Withdrawn
-
2000
- 2000-03-06 AU AU20684/00A patent/AU776428B2/en not_active Ceased
- 2000-03-09 DE DE50010944T patent/DE50010944D1/de not_active Expired - Lifetime
- 2000-03-09 AT AT00105043T patent/ATE302293T1/de not_active IP Right Cessation
- 2000-03-09 EP EP00105043A patent/EP1036856B1/de not_active Expired - Lifetime
- 2000-03-13 US US09/524,755 patent/US7043069B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| LEHTINEN T. et al: 'Correlations Between In-Flight Particle Concentrations and Coating Properties in Atmospheric Plasma Spraying of Alumina', Proceedings of the 9th National Thermal Spray Conference (NTSC), Cincinnati, 7. - 11. Oktober 1996, Seiten 525 - 530 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020109648A1 (de) | 2020-04-07 | 2021-10-07 | Jochen Zierhut | Verfahren zur optischen Qualitätskontrolle beim Laserauftragsschweißen |
| EP3900869A1 (de) | 2020-04-07 | 2021-10-27 | Jochen Zierhut | Verfahren und vorrichtung zur optischen qualitätskontrolle beim laserauftragsschweissen |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE302293T1 (de) | 2005-09-15 |
| US7043069B1 (en) | 2006-05-09 |
| AU776428B2 (en) | 2004-09-09 |
| EP1036856A1 (de) | 2000-09-20 |
| DE50010944D1 (de) | 2005-09-22 |
| DE19910892A1 (de) | 2000-09-14 |
| AU2068400A (en) | 2000-09-14 |
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