WO1994000616A1 - Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases - Google Patents
Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases Download PDFInfo
- Publication number
- WO1994000616A1 WO1994000616A1 PCT/EP1993/001483 EP9301483W WO9400616A1 WO 1994000616 A1 WO1994000616 A1 WO 1994000616A1 EP 9301483 W EP9301483 W EP 9301483W WO 9400616 A1 WO9400616 A1 WO 9400616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- walls
- powder
- protective layer
- stress
- basic material
- Prior art date
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)
- Laminated Bodies (AREA)
- Chemical Vapour Deposition (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59309491T DE59309491D1 (en) | 1992-06-19 | 1993-06-11 | METHOD FOR THE PRODUCTION OF A PROTECTIVE LAYER ON METAL WALLS WHICH HAVE BEEN SUBJECTED WITH HOT GASES, IN PARTICULAR SMOKE GASES |
RU94046201A RU2107744C1 (en) | 1992-06-19 | 1993-06-11 | Method of producing of protective layer on walls from metal basic material exposed to effect of hot gases, particular, flue gases |
BR9306566A BR9306566A (en) | 1992-06-19 | 1993-06-11 | Process for the production of a protective layer on metal walls activated with hot gases, especially smoke gases |
KR1019940704599A KR950701983A (en) | 1992-06-19 | 1993-06-11 | PROCESS FOR PRODUCING A PROTECTIVE COATING ON METAL WALLS SUBJECT TO ATTACK BY HOT GASES ESPECIALLY FLUE GASE |
EP93912953A EP0672197B1 (en) | 1992-06-19 | 1993-06-11 | Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases |
SK1563-94A SK156394A3 (en) | 1992-06-19 | 1993-06-11 | Process for producing a protective coating on heat stressed metal walls |
CA002138255A CA2138255A1 (en) | 1992-06-19 | 1993-06-11 | Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases |
JP50198994A JP3150697B2 (en) | 1992-06-19 | 1993-06-11 | Method of producing a protective layer on a metal wall exposed to a hot gas |
AU43250/93A AU672009B2 (en) | 1992-06-19 | 1993-06-11 | Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases |
PL93306721A PL171965B1 (en) | 1992-06-19 | 1993-06-11 | Method of producing a protective film on metal walls contacting hot gases, in particular combustion ones |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4220063A DE4220063C1 (en) | 1992-06-19 | 1992-06-19 | Process for producing a protective layer on metallic walls exposed to hot gases, in particular flue gases |
DEP4220063.6 | 1992-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994000616A1 true WO1994000616A1 (en) | 1994-01-06 |
Family
ID=6461363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/001483 WO1994000616A1 (en) | 1992-06-19 | 1993-06-11 | Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0672197B1 (en) |
JP (1) | JP3150697B2 (en) |
KR (1) | KR950701983A (en) |
AT (1) | ATE178364T1 (en) |
AU (1) | AU672009B2 (en) |
BR (1) | BR9306566A (en) |
CA (1) | CA2138255A1 (en) |
CZ (1) | CZ313794A3 (en) |
DE (2) | DE4220063C1 (en) |
ES (1) | ES2132237T3 (en) |
PL (1) | PL171965B1 (en) |
RU (1) | RU2107744C1 (en) |
SK (1) | SK156394A3 (en) |
WO (1) | WO1994000616A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0727504A2 (en) * | 1995-02-14 | 1996-08-21 | General Electric Company | Plasma coating process for improved bonding of coatings on substrates |
EP2816135A1 (en) * | 2013-06-18 | 2014-12-24 | Häuser&Co. GmbH | Plasma powder spray method for coating of panels for boiler walls in connection with a laser beam apparatus |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT411625B (en) * | 2000-04-28 | 2004-03-25 | Vaillant Gmbh | Heat exchanger, especially a coiled tube heat exchanger of a water heater, is coated using a plasma stream containing added silicon dioxide, aluminum oxide, silicon compound and-or titanium compound |
CZ298780B6 (en) * | 2003-12-23 | 2008-01-23 | Koexpro Ostrava, A. S. | Protective coating of tools and implements for preventing formation of mechanical incentive sparks |
DE102007020420B4 (en) | 2007-04-27 | 2011-02-24 | Häuser & Co. GmbH | Plasma spraying process for coating superheater pipes and using a metal alloy powder |
CN108101062A (en) * | 2018-01-17 | 2018-06-01 | 江苏中能硅业科技发展有限公司 | A kind of preparation process of polycrystalline silicon reducing furnace and its furnace tube inner wall functional layer |
JP7370794B2 (en) | 2019-09-30 | 2023-10-30 | セコム株式会社 | security equipment |
JP7370793B2 (en) | 2019-09-30 | 2023-10-30 | セコム株式会社 | security equipment |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3911891A (en) * | 1973-08-13 | 1975-10-14 | Robert D Dowell | Coating for metal surfaces and method for application |
EP0183638A1 (en) * | 1984-11-28 | 1986-06-04 | United Technologies Corporation | Method of applying continuously graded metallic-ceramic layer on metallic substrates |
EP0340791A2 (en) * | 1988-05-06 | 1989-11-08 | Hitachi, Ltd. | Ceramics-coated heat resisting alloy member |
DE3821658A1 (en) * | 1988-06-27 | 1989-12-28 | Thyssen Guss Ag | Process for producing corrosion-resistant and wear-resistant layers on printing press cylinders |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2213350B1 (en) * | 1972-11-08 | 1975-04-11 | Sfec | |
DE2630507C3 (en) * | 1976-07-07 | 1983-12-15 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Process for the production of protective layers on workpieces and device for carrying out the process |
US4075392A (en) * | 1976-09-30 | 1978-02-21 | Eutectic Corporation | Alloy-coated ferrous metal substrate |
DE3815436A1 (en) * | 1988-05-06 | 1989-11-16 | Muiden Chemie B V | DRIVE CHARGES FOR LARGE-CALIBRED BULLETS |
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/en not_active Expired - Fee Related
-
1993
- 1993-06-11 WO PCT/EP1993/001483 patent/WO1994000616A1/en active IP Right Grant
- 1993-06-11 KR KR1019940704599A patent/KR950701983A/en not_active Application Discontinuation
- 1993-06-11 CA CA002138255A patent/CA2138255A1/en not_active Abandoned
- 1993-06-11 AT AT93912953T patent/ATE178364T1/en not_active IP Right Cessation
- 1993-06-11 AU AU43250/93A patent/AU672009B2/en not_active Ceased
- 1993-06-11 EP EP93912953A patent/EP0672197B1/en not_active Expired - Lifetime
- 1993-06-11 RU RU94046201A patent/RU2107744C1/en active
- 1993-06-11 BR BR9306566A patent/BR9306566A/en not_active IP Right Cessation
- 1993-06-11 JP JP50198994A patent/JP3150697B2/en not_active Expired - Fee Related
- 1993-06-11 ES ES93912953T patent/ES2132237T3/en not_active Expired - Lifetime
- 1993-06-11 CZ CZ943137A patent/CZ313794A3/en unknown
- 1993-06-11 SK SK1563-94A patent/SK156394A3/en unknown
- 1993-06-11 DE DE59309491T patent/DE59309491D1/en not_active Expired - Lifetime
- 1993-06-11 PL PL93306721A patent/PL171965B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3911891A (en) * | 1973-08-13 | 1975-10-14 | Robert D Dowell | Coating for metal surfaces and method for application |
EP0183638A1 (en) * | 1984-11-28 | 1986-06-04 | United Technologies Corporation | Method of applying continuously graded metallic-ceramic layer on metallic substrates |
EP0340791A2 (en) * | 1988-05-06 | 1989-11-08 | Hitachi, Ltd. | Ceramics-coated heat resisting alloy member |
DE3821658A1 (en) * | 1988-06-27 | 1989-12-28 | Thyssen Guss Ag | Process for producing corrosion-resistant and wear-resistant layers on printing press cylinders |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0727504A2 (en) * | 1995-02-14 | 1996-08-21 | General Electric Company | Plasma coating process for improved bonding of coatings on substrates |
EP0727504A3 (en) * | 1995-02-14 | 1996-10-23 | Gen Electric | Plasma coating process for improved bonding of coatings on substrates |
US5770273A (en) * | 1995-02-14 | 1998-06-23 | General Electric Company | Plasma coating process for improved bonding of coatings on substrates |
EP2816135A1 (en) * | 2013-06-18 | 2014-12-24 | Häuser&Co. GmbH | Plasma powder spray method for coating of panels for boiler walls in connection with a laser beam apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE4220063C1 (en) | 1993-11-18 |
AU672009B2 (en) | 1996-09-19 |
PL171965B1 (en) | 1997-07-31 |
ATE178364T1 (en) | 1999-04-15 |
KR950701983A (en) | 1995-05-17 |
BR9306566A (en) | 1999-01-12 |
EP0672197B1 (en) | 1999-03-31 |
CA2138255A1 (en) | 1994-01-06 |
JP3150697B2 (en) | 2001-03-26 |
CZ313794A3 (en) | 1995-08-16 |
ES2132237T3 (en) | 1999-08-16 |
DE59309491D1 (en) | 1999-05-06 |
RU2107744C1 (en) | 1998-03-27 |
JPH08501350A (en) | 1996-02-13 |
AU4325093A (en) | 1994-01-24 |
SK156394A3 (en) | 1997-02-05 |
EP0672197A1 (en) | 1995-09-20 |
RU94046201A (en) | 1996-10-20 |
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