EP0672197A1 - Verfahren zur herstellung einer schutzschicht auf mit heissen gasen, insbesondere rauchgasen beaufschlagten metallischen wänden - Google Patents
Verfahren zur herstellung einer schutzschicht auf mit heissen gasen, insbesondere rauchgasen beaufschlagten metallischen wändenInfo
- Publication number
- EP0672197A1 EP0672197A1 EP93912953A EP93912953A EP0672197A1 EP 0672197 A1 EP0672197 A1 EP 0672197A1 EP 93912953 A EP93912953 A EP 93912953A EP 93912953 A EP93912953 A EP 93912953A EP 0672197 A1 EP0672197 A1 EP 0672197A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- walls
- powder
- protective layer
- stress
- basic material
- 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
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
-
- 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
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
Definitions
- the invention relates to a method for producing a protective layer on walls of combustion plants, heat exchangers or similar plants, which are exposed to hot gases, in particular flue gases and are loaded in a predetermined temperature range, and in which a plasma spraying process is used a powder of metallic, carbide, oxide ceramic or silicide materials or mixtures of these materials is applied to the previously cleaned, metallic walls to form the protective layer.
- Such protective layers should e.g. be applied to cooling walls of waste heat boilers on steel converters. These walls are exposed to particularly high loads. On one side flow approx. 1 00 ° -
- DE 23 55 532 C2 discloses a method for powder deposition welding of metals and alloys on a preheated metal base prepared by sandblasting, in which the metal liage is previously heated to at least 100 to about 650 ° C.
- the base material is heated very strongly when the protective layer is applied, which leads to an undesirable structural change.
- the melting temperature is between 980 and 1060 ° C, depending on the spray powder used. Due to the high heat input, this also occurs Warping of the walls to be coated. When installing these walls, problems and additional costs may arise due to the dimensional inaccuracies.
- the protective layer has a thickness of approximately 8 to 10 mm for build-up welding and 1 to 2 mm for flame spraying.
- DE-AS 26 30 507 is also a process for the production of
- the present invention has for its object to propose a generic method in which these problems do not occur and in particular the distortion of the workpieces and crack-forming stresses in the base material are avoided.
- the base material of the walls is activated in such a way that disturbances are generated in the metallic lattice, as a result of which the adhesive forces are increased.
- the powder is then applied to the walls under atmospheric conditions after the plasma spraying process, the surface of which thereby maintains approximately room temperature.
- the composition of the powder is determined depending on the existing base material and the later operating conditions, in particular the specified temperature ranges.
- tensile stresses of between 50 and 800 N / mm 2 , preferably between 500 and 800 N / mm 2
- These stress states are calculated by means of the thermal expansion coefficients of the base material on the one hand and of test workpieces made of different powders on the other hand. The mathematical determination can then be checked in accordance with DIN 50121.
- a heat-resistant and shock-resistant protective layer against hot gas corrosion and / or mechanical wear is generated on flat or curved walls of combustion plants, heat exchangers, in particular of waste heat boilers on steel converters.
- an 80 KW plasma spraying device with an internal powder supply has proven to be particularly suitable. It becomes powder with a grain size of less than 75 ⁇ m, preferably 20 to
- the surface of the walls to be treated can be roughened and activated with high-grade corundum, preferably with high-purity white high-grade corundum.
- the surface is only heated to approximately 40 ° C. at most 60 ° C. by the plasma jet and the powder particles melted therein. As a result, warping of the wall surfaces can be excluded in particular.
- a powder containing a Ni alloy is expediently used.
- the stress temperature of the walls treated with a protective layer can be in the range between 300 and 1800 ° C., preferably 600 and 1000 ° C.
- the voltage behavior in the transition zone of the base material and the applied protective layer in the temperature range between 0 and approximately 1200 ° C. is shown as an example in a voltage-temperature diagram. This is based on the measured, average linear thermal expansion coefficients of the two material partners.
- the tensile state slowly builds up again after the stress, ie in the diagram, the drawn line of the stress curve is traversed in the opposite direction.
- the so-called 0 state can naturally also be 400 ° or 800 ° C instead of 700 ° C.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Coating By Spraying Or Casting (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Chemical Vapour Deposition (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4220063 | 1992-06-19 | ||
DE4220063A DE4220063C1 (de) | 1992-06-19 | 1992-06-19 | Verfahren zur Herstellung einer Schutzschicht auf mit heißen Gasen, insbesondere Rauchgasen beaufschlagten metallischen Wänden |
PCT/EP1993/001483 WO1994000616A1 (de) | 1992-06-19 | 1993-06-11 | Verfahren zur herstellung einer schutzschicht auf mit heissen gasen, insbesondere rauchgasen beaufschlagten metallischen wänden |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0672197A1 true EP0672197A1 (de) | 1995-09-20 |
EP0672197B1 EP0672197B1 (de) | 1999-03-31 |
Family
ID=6461363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93912953A Expired - Lifetime EP0672197B1 (de) | 1992-06-19 | 1993-06-11 | Verfahren zur herstellung einer schutzschicht auf mit heissen gasen, insbesondere rauchgasen beaufschlagten metallischen wänden |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0672197B1 (de) |
JP (1) | JP3150697B2 (de) |
KR (1) | KR950701983A (de) |
AT (1) | ATE178364T1 (de) |
AU (1) | AU672009B2 (de) |
BR (1) | BR9306566A (de) |
CA (1) | CA2138255A1 (de) |
CZ (1) | CZ313794A3 (de) |
DE (2) | DE4220063C1 (de) |
ES (1) | ES2132237T3 (de) |
PL (1) | PL171965B1 (de) |
RU (1) | RU2107744C1 (de) |
SK (1) | SK156394A3 (de) |
WO (1) | WO1994000616A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0727504A3 (de) * | 1995-02-14 | 1996-10-23 | Gen Electric | Plasmabeschichtungsverfahren für verbesserte Hafteigenschaften von Beschichtungen auf Gegenständen |
AT411625B (de) * | 2000-04-28 | 2004-03-25 | Vaillant Gmbh | Verfahren zur beschichtung eines wärmetauschers |
CZ298780B6 (cs) * | 2003-12-23 | 2008-01-23 | Koexpro Ostrava, A. S. | Ochranný povlak nářadí a nástrojů pro zamezení vzniku mechanických zápalných jisker |
DE102007020420B4 (de) | 2007-04-27 | 2011-02-24 | Häuser & Co. GmbH | Plasmaspritzverfahren zur Beschichtung von Überhitzerrohren und Verwendung eines Metalllegierungspulvers |
DE102013010126B4 (de) | 2013-06-18 | 2015-12-31 | Häuser & Co. GmbH | Plasmapulverspritzverfahren und Vorrichtung zur Beschichtung von Paneelen für Kesselwände in Verbindung mit einem Laserstrahlgerät |
CN108101062A (zh) * | 2018-01-17 | 2018-06-01 | 江苏中能硅业科技发展有限公司 | 一种多晶硅还原炉及其炉筒内壁功能层的制备工艺 |
JP7370794B2 (ja) | 2019-09-30 | 2023-10-30 | セコム株式会社 | 警備装置 |
JP7370793B2 (ja) | 2019-09-30 | 2023-10-30 | セコム株式会社 | 警備装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2213350B1 (de) * | 1972-11-08 | 1975-04-11 | Sfec | |
US3911891A (en) * | 1973-08-13 | 1975-10-14 | Robert D Dowell | Coating for metal surfaces and method for application |
DE2630507C3 (de) * | 1976-07-07 | 1983-12-15 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Verfahren zur Herstellung von Schutzschichten auf Werkstücken und Vorrichtung zur Durchführung des Verfahrens |
US4075392A (en) * | 1976-09-30 | 1978-02-21 | Eutectic Corporation | Alloy-coated ferrous metal substrate |
US4588607A (en) * | 1984-11-28 | 1986-05-13 | United Technologies Corporation | Method of applying continuously graded metallic-ceramic layer on metallic substrates |
JP2695835B2 (ja) * | 1988-05-06 | 1998-01-14 | 株式会社日立製作所 | セラミック被覆耐熱部材 |
DE3815436A1 (de) * | 1988-05-06 | 1989-11-16 | Muiden Chemie B V | Treibladungen fuer grosskalibrige geschosse |
DE3821658A1 (de) * | 1988-06-27 | 1989-12-28 | Thyssen Guss Ag | Verfahren zur herstellung von korrosionsbestaendigen und verschleissfesten schichten auf walzen von druckmaschinen |
CA2053928A1 (en) * | 1990-10-24 | 1992-04-25 | Toshihiko Hashimoto | Benzopyran derivatives having anti-hypertensive and vasodilartory activity, their preparation and their therapeutic use |
-
1992
- 1992-06-19 DE DE4220063A patent/DE4220063C1/de not_active Expired - Fee Related
-
1993
- 1993-06-11 SK SK1563-94A patent/SK156394A3/sk unknown
- 1993-06-11 PL PL93306721A patent/PL171965B1/pl not_active IP Right Cessation
- 1993-06-11 KR KR1019940704599A patent/KR950701983A/ko not_active Application Discontinuation
- 1993-06-11 EP EP93912953A patent/EP0672197B1/de not_active Expired - Lifetime
- 1993-06-11 AT AT93912953T patent/ATE178364T1/de not_active IP Right Cessation
- 1993-06-11 JP JP50198994A patent/JP3150697B2/ja not_active Expired - Fee Related
- 1993-06-11 CA CA002138255A patent/CA2138255A1/en not_active Abandoned
- 1993-06-11 WO PCT/EP1993/001483 patent/WO1994000616A1/de active IP Right Grant
- 1993-06-11 DE DE59309491T patent/DE59309491D1/de not_active Expired - Lifetime
- 1993-06-11 RU RU94046201A patent/RU2107744C1/ru active
- 1993-06-11 CZ CZ943137A patent/CZ313794A3/cs unknown
- 1993-06-11 BR BR9306566A patent/BR9306566A/pt not_active IP Right Cessation
- 1993-06-11 AU AU43250/93A patent/AU672009B2/en not_active Ceased
- 1993-06-11 ES ES93912953T patent/ES2132237T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9400616A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL171965B1 (pl) | 1997-07-31 |
KR950701983A (ko) | 1995-05-17 |
WO1994000616A1 (de) | 1994-01-06 |
CZ313794A3 (en) | 1995-08-16 |
ES2132237T3 (es) | 1999-08-16 |
ATE178364T1 (de) | 1999-04-15 |
AU4325093A (en) | 1994-01-24 |
BR9306566A (pt) | 1999-01-12 |
AU672009B2 (en) | 1996-09-19 |
DE59309491D1 (de) | 1999-05-06 |
DE4220063C1 (de) | 1993-11-18 |
JP3150697B2 (ja) | 2001-03-26 |
JPH08501350A (ja) | 1996-02-13 |
RU2107744C1 (ru) | 1998-03-27 |
CA2138255A1 (en) | 1994-01-06 |
EP0672197B1 (de) | 1999-03-31 |
RU94046201A (ru) | 1996-10-20 |
SK156394A3 (en) | 1997-02-05 |
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