EP1036856A1 - Qualitätssicherung beim thermischen Spritzen mittels rechnerischer Überarbeitung digitaler Bilder - Google Patents
Qualitätssicherung beim thermischen Spritzen mittels rechnerischer Überarbeitung digitaler Bilder Download PDFInfo
- Publication number
- EP1036856A1 EP1036856A1 EP00105043A EP00105043A EP1036856A1 EP 1036856 A1 EP1036856 A1 EP 1036856A1 EP 00105043 A EP00105043 A EP 00105043A EP 00105043 A EP00105043 A EP 00105043A EP 1036856 A1 EP1036856 A1 EP 1036856A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- quality
- spray
- spraying process
- spray layer
- thermal spraying
- 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
Links
- 238000007751 thermal spraying Methods 0.000 title claims description 23
- 238000003908 quality control method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 51
- 238000005507 spraying Methods 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 38
- 238000000275 quality assurance Methods 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000005457 optimization Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 11
- 239000000945 filler Substances 0.000 description 5
- 238000010285 flame spraying Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007750 plasma spraying Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010283 detonation spraying Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
Images
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 for generating a Spray layer on the surface of a substrate, using a digital Camera at least one feature of the spray layer that influences the quality of the spray layer thermal spraying process is detected, checked 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 Spraying process comprising a digital camera for detection, control and / or Monitoring at least one influencing the quality of the spray layer Characteristic of the thermal spraying process.
- thermal spraying for coating come in within the scope of the invention, all known process variants are considered in principle 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 known as cold gas spraying Spraying, a kind of further development of high-speed flame spraying (For example, described in European patent EP 0 484 533 B1).
- a filler material in powder form is used for cold gas spraying, whereby the powder particles are not melted in a gas jet during cold gas spraying, but the temperature of the gas jet below the melting point of the filler powder particles lies.
- the acquisition, control and / or monitoring with the digital camera can Regulation and, if necessary, optimization of one or more parameters be used.
- Digital technology makes it easy to Control and / or monitoring of the quality of the spray coating serving Recordings made immediately visible in the current spraying process and / or are evaluated and thus an optimal control of spray parameters take place can.
- the optimization of the parameters contributes to the profitability of the thermal spraying process because an ineffectively high consumption of one or several substances required in the thermal spray process (e.g. gas quantities, Filler materials) can be avoided and thus savings can be achieved.
- the representation of the pictures or video recordings can basically be black and white or colored, whereby also Mixed forms with, for example, partial colored representation are possible.
- the present invention is based on the object of the method mentioned at the outset and to further develop the system mentioned at the outset, the computational Revision and / or alienation is further developed and improved.
- the scope of the information on which the diagnosis is based should be as extensive as possible be kept low or reduced so that handling, speed and / or data storage is simplified.
- the task is solved with respect to the method in that in the Images by means of computational revision and / or alienation at least one Area of equal intensity and / or at least one area within a certain one Intensity interval of one or more symmetrical geometric Surfaces are assigned.
- the task is solved with respect to the system in that means for Detection of the symmetrical geometric surface body or bodies on the basis of for the respective geometric shape of characteristic features as a data set or Data records are present, being about this data record or about these data records the at least one characteristic of the spray layer influencing the quality of the thermal spraying process is detected, checked and / or monitored.
- the symmetry of the geometrical sheets comprises Axis and rotational symmetries.
- the symmetrical or the geometric Sheet based on the characteristic of the respective geometric shape Characteristics recorded as a data set or data sets and via this data set or via these data records the at least one that influences the quality of the spray layer Characteristic of the thermal spraying process recorded, controlled and / or monitored.
- Circles, Squares, rectangles, parallelograms and / or ellipses are used. In doing so Ellipses are preferred because they usually have oval shapes their similarity in contour with ellipses can be grasped easily and relatively precisely are.
- Characteristic features which are independent of one another are advantageously used as Recorded for the respective geometric shape. This helps the number of dates on the one hand to keep it low, but on the other hand to provide the most meaningful data possible determine.
- the computational revision and / or alienation is preferred by means of a Contour detection algorithm, by means of a representation in gradient levels and / or by means of a gradient-emphasized representation reduced to the bit level.
- the at least one characteristic of the spray layer which influences the quality of the spray layer Thermal spraying process can be the spraying process itself and / or the process relate to the spray gun used.
- the symmetrical geometric sheets or preferably their data sets can control and, if necessary, optimize one or more parameters be used.
- the invention ensures quality assurance by means of diagnostics based on relative (regarding the large number of parameters in thermal spraying) based on small amounts of data and thereby for the spraying process or for the Spray gun based on meaningful and unambiguous data.
- the sequence of images is a computational revision and / or Alienation.
- the mathematically revised or alienated image display leads to a data record One or more ellipses that are used for quality assurance purposes Spraying process (in a broader sense) both the spray gun and the spraying process characterize yourself (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)
Abstract
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 (12)
- Verfahren zum thermischen Spritzen zur Erzeugung einer Spritzschicht auf der Oberfläche eines Substrates, wobei mittels einer digitalen Kamera zumindest ein die Qualität der Spritzschicht beeinflussendes Merkmal des thermischen Spritzprozesses erfaßt, kontrolliert und/oder überwacht wird, 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.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, 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 das zumindest eine die Qualität der Spritzschicht beeinflussende Merkmal des thermischen Spritzprozesses erfaßt, kontrolliert und/oder überwacht wird.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß als symmetrische geometrische Flächenkörper Kreise, Quadrate, Rechtecke, Parallelogramme und/oder bevorzugt Ellipsen eingesetzt werden.
- Verfahren nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß voneinander unabhängige charakteristische Merkmale als Datensatz für die jeweilige geometrische Form erfaßt werden.
- Verfahren nach einem der Ansprüche 1 bis 4, 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 5, 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 6, 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 7, 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 Erfassung, Kontrolle und/oder Überwachung zumindest eines die Qualität der Spritzschicht beeinflussenden Merkmals des thermischen Spritzprozesses, 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.
- Anlage nach Anspruch 9, dadurch gekennzeichnet, 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 eine die Qualität der Spritzschicht beeinflussende Merkmal des thermischen Spritzprozesses erfaßt, kontrolliert und/oder überwacht wird.
- Anlage nach Anspruch 9 oder 10, 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 9 bis 12, 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 true EP1036856A1 (de) | 2000-09-20 |
| EP1036856B1 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004029319A3 (de) * | 2002-09-21 | 2004-05-27 | Mtu Aero Engines Gmbh | Verfahen zur beschichtung eines werkstücks |
| US10241091B2 (en) | 2015-06-04 | 2019-03-26 | Rolls-Royce Corporation | Diagnosis of thermal spray gun ignition |
| US10274364B2 (en) | 2013-01-14 | 2019-04-30 | Virginia Tech Intellectual Properties, Inc. | Analysis of component having engineered internal space for fluid flow |
| US10695783B2 (en) | 2016-12-06 | 2020-06-30 | Rolls-Royce Corporation | System control based on acoustic signals |
| US10724999B2 (en) | 2015-06-04 | 2020-07-28 | Rolls-Royce Corporation | Thermal spray diagnostics |
| US11092983B2 (en) | 2018-06-18 | 2021-08-17 | Rolls-Royce Corporation | System control based on acoustic and image signals |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE102013223688A1 (de) * | 2013-11-20 | 2015-05-21 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum automatisierten Aufbringen einer Spritzbeschichtung |
| 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 |
| DE102020109648A1 (de) | 2020-04-07 | 2021-10-07 | Jochen Zierhut | Verfahren zur optischen Qualitätskontrolle beim Laserauftragsschweißen |
| 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 |
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| DE3515209A1 (de) * | 1984-04-27 | 1985-10-31 | Babcock-Hitachi K.K., Tokio/Tokyo | Verfahren und vorrichtung zur ueberwachung eines verbrennungszustands |
| US5047612A (en) * | 1990-02-05 | 1991-09-10 | General Electric Company | Apparatus and method for controlling powder deposition in a plasma spray process |
| JPH08269672A (ja) * | 1995-03-30 | 1996-10-15 | Toshiba Corp | 溶射皮膜の評価方法および装置 |
| EP0955389A1 (de) * | 1998-05-06 | 1999-11-10 | Linde Aktiengesellschaft | Qualitätsicherung beim thermischen Spritzen |
Family Cites Families (12)
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| 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 |
| 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 |
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| RU2032280C1 (ru) * | 1992-02-18 | 1995-03-27 | Инженерный центр "Плазмодинамика" | Способ управления плазменным потоком и плазменное устройство |
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| US5757498A (en) * | 1996-05-30 | 1998-05-26 | Klein, Ii; Richard J. | Optical spray coating monitoring system and method |
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| EP0837305A1 (de) * | 1996-10-21 | 1998-04-22 | Sulzer Metco AG | Einrichtung sowie Verfahren zur Überwachung des Beschichtungsprozesses einer thermischen Beschichtungsvorrichtung |
| 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
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| DE3515209A1 (de) * | 1984-04-27 | 1985-10-31 | Babcock-Hitachi K.K., Tokio/Tokyo | Verfahren und vorrichtung zur ueberwachung eines verbrennungszustands |
| US5047612A (en) * | 1990-02-05 | 1991-09-10 | General Electric Company | Apparatus and method for controlling powder deposition in a plasma spray process |
| JPH08269672A (ja) * | 1995-03-30 | 1996-10-15 | Toshiba Corp | 溶射皮膜の評価方法および装置 |
| EP0955389A1 (de) * | 1998-05-06 | 1999-11-10 | Linde Aktiengesellschaft | Qualitätsicherung beim thermischen Spritzen |
| DE19820195A1 (de) * | 1998-05-06 | 1999-11-11 | Linde Ag | Qualitätssicherung beim thermischen Spritzen |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004029319A3 (de) * | 2002-09-21 | 2004-05-27 | Mtu Aero Engines Gmbh | Verfahen zur beschichtung eines werkstücks |
| US10274364B2 (en) | 2013-01-14 | 2019-04-30 | Virginia Tech Intellectual Properties, Inc. | Analysis of component having engineered internal space for fluid flow |
| 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 |
| US10695783B2 (en) | 2016-12-06 | 2020-06-30 | Rolls-Royce Corporation | System control based on acoustic signals |
| US11092983B2 (en) | 2018-06-18 | 2021-08-17 | Rolls-Royce Corporation | System control based on acoustic and image signals |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE302293T1 (de) | 2005-09-15 |
| US7043069B1 (en) | 2006-05-09 |
| EP1036856B1 (de) | 2005-08-17 |
| AU776428B2 (en) | 2004-09-09 |
| DE50010944D1 (de) | 2005-09-22 |
| DE19910892A1 (de) | 2000-09-14 |
| AU2068400A (en) | 2000-09-14 |
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