GB1433137A - Plasma arc spraying and apparatus therefor - Google Patents
Plasma arc spraying and apparatus thereforInfo
- Publication number
- GB1433137A GB1433137A GB2517972A GB2517972A GB1433137A GB 1433137 A GB1433137 A GB 1433137A GB 2517972 A GB2517972 A GB 2517972A GB 2517972 A GB2517972 A GB 2517972A GB 1433137 A GB1433137 A GB 1433137A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- substrate
- nozzle
- hot gas
- entrained
- 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
Links
- 238000005507 spraying Methods 0.000 title 1
- 239000000758 substrate Substances 0.000 abstract 5
- 238000000576 coating method Methods 0.000 abstract 4
- 239000000843 powder Substances 0.000 abstract 4
- 239000011248 coating agent Substances 0.000 abstract 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 1
- 229910009043 WC-Co Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 238000007750 plasma spraying Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0093—Chemical modification
-
- 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
- B05B7/222—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 using an arc
- B05B7/226—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 using an arc the material being originally a particulate material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nozzles (AREA)
- Coating By Spraying Or Casting (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
1433137 Spray producers; coatings UNION CARBIDE UK Ltd 29 May 1973 [30 May 1972] 25179/72 Headings B2E and B2F [Also in Divisions C7 and H5] In plasma spraying, wherein an arc is maintained between first and second electrodes 3 and 5, a gas is passed into said arc (through block 2) to produce a hot gas effluent which passes through constricting nozzle 4, and together with a coating powder entrained therein is directed at a substrate to be coated, said substrate being >7.5 cm from said nozzle, and the hot gas effluent and entrained coating powder are passed through a chamber in the form of a tube 6 between the nozzle and the substrate in which tube a zone of sub-atmospheric pressure is maintained by providing a sheath of gas moving in a helical path through said tube between the inner surface 12 thereof and said hot gas effluent having powder entrained therein. Said tube 6 may be cylindrical as shown, or tapered outwardly toward the substrate, or may first taper inwardly and then outwardly; the means for supplying the helical gas flow may be an inlet 9 leading to a spiral channel 10 in an insert 7 as shown, or may be a series of tangetial inlets; various forms are described referring to Figs. 2-6 (not shown). There may be an air-gap between the said nozzle and the tube 6. The powder feed rate may be 25-60 g/min and the surface speed less than 25 cm/sec; the zone of reduced pressure preferably extends beyond tube 6 as far as the substrate. Coating materials referred to are Cr 2 O 3 , WC-Co, Al 2 O 3 , Ni, Co-Cr-Ni-W and Ta.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2517972A GB1433137A (en) | 1972-05-30 | 1972-05-30 | Plasma arc spraying and apparatus therefor |
| CA172,431A CA1000125A (en) | 1972-05-30 | 1973-05-28 | Process for controlling high temperature gaseous effluents |
| DE2327395A DE2327395C3 (en) | 1972-05-30 | 1973-05-29 | Plasma spray device |
| FR7319479A FR2186851A5 (en) | 1972-05-30 | 1973-05-29 | |
| CH774073A CH589145A5 (en) | 1972-05-30 | 1973-05-29 | |
| JP5940673A JPS5318173B2 (en) | 1972-05-30 | 1973-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2517972A GB1433137A (en) | 1972-05-30 | 1972-05-30 | Plasma arc spraying and apparatus therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1433137A true GB1433137A (en) | 1976-04-22 |
Family
ID=10223526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2517972A Expired GB1433137A (en) | 1972-05-30 | 1972-05-30 | Plasma arc spraying and apparatus therefor |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5318173B2 (en) |
| CA (1) | CA1000125A (en) |
| CH (1) | CH589145A5 (en) |
| DE (1) | DE2327395C3 (en) |
| FR (1) | FR2186851A5 (en) |
| GB (1) | GB1433137A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE31018E (en) | 1980-11-13 | 1982-08-24 | Metco Inc. | Method and apparatus for shielding the effluent from plasma spray gun assemblies |
| GB2175991A (en) * | 1985-03-19 | 1986-12-10 | Proprietary Coating Ind Limite | Flame spraying gun |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3618665A1 (en) * | 1986-06-03 | 1987-12-10 | Aesculap Werke Ag | METHOD FOR APPLYING A PROTECTIVE LAYER ON JOINT OPROSTHESES |
| FR2714763B1 (en) * | 1993-12-30 | 1996-03-15 | Framatome Sa | Method and device for producing a waterproof protective coating on a surface of a nuclear reactor component and applications. |
| DE102008037799B4 (en) * | 2008-08-14 | 2012-03-22 | Daimler Ag | Method and device for thermal spraying |
| CN107475660B (en) * | 2017-08-31 | 2019-11-15 | 无锡科特金属表面处理有限公司 | A kind of plasma ashing tungsten spraying production technology |
-
1972
- 1972-05-30 GB GB2517972A patent/GB1433137A/en not_active Expired
-
1973
- 1973-05-28 CA CA172,431A patent/CA1000125A/en not_active Expired
- 1973-05-29 JP JP5940673A patent/JPS5318173B2/ja not_active Expired
- 1973-05-29 DE DE2327395A patent/DE2327395C3/en not_active Expired
- 1973-05-29 CH CH774073A patent/CH589145A5/xx not_active IP Right Cessation
- 1973-05-29 FR FR7319479A patent/FR2186851A5/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE31018E (en) | 1980-11-13 | 1982-08-24 | Metco Inc. | Method and apparatus for shielding the effluent from plasma spray gun assemblies |
| GB2175991A (en) * | 1985-03-19 | 1986-12-10 | Proprietary Coating Ind Limite | Flame spraying gun |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5318173B2 (en) | 1978-06-13 |
| CA1000125A (en) | 1976-11-23 |
| CH589145A5 (en) | 1977-06-30 |
| DE2327395A1 (en) | 1973-12-13 |
| DE2327395B2 (en) | 1978-12-21 |
| FR2186851A5 (en) | 1974-01-11 |
| DE2327395C3 (en) | 1979-08-23 |
| JPS4979932A (en) | 1974-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920529 |