CN201933144U - Supersonic flame-spraying device - Google Patents
Supersonic flame-spraying device Download PDFInfo
- Publication number
- CN201933144U CN201933144U CN2010206310850U CN201020631085U CN201933144U CN 201933144 U CN201933144 U CN 201933144U CN 2010206310850 U CN2010206310850 U CN 2010206310850U CN 201020631085 U CN201020631085 U CN 201020631085U CN 201933144 U CN201933144 U CN 201933144U
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- temperature
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- combustion chamber
- laval noz
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Abstract
The utility model relates to a supersonic flame-spraying device, which is characterized in that a temperature control chamber which can be introduced with cooling inactive gas is arranged between a combustion chamber and a Laval spray pipe, the reduction of an airflow temperature is realized, and therefore not only can powder particles be kept in the state of only being softened without being molten to effectively avoid the problems that a spray-gun pipe is blocked by the molten particles and the like, but also the powder particles, such as carbides and the like can be inhibited from being molten and decomposed to avoid various problems of coating quality and the like.
Description
Technical field
The utility model relates to field of thermal spray, particularly a kind of supersonic flame sprayer.
Background technology
Hypersonic flame spraying (HVOF) is a kind of New Hot Spraying Technique that grows up on the basis in common flame plating.It is to utilize that hydrocarbon to be combustion gas or hydrogen and high pressure oxygen burn in combustion chamber or special nozzle, produce high-temperature high-pressure fuel gas flame stream, in powders into flame, and produce the particle of fusing or semi-molten, thus high-speed impact formation of deposits coating on substrate surface.Owing to sprayed particle strikes substrate surface with supersonic flight, so it can obtain than common flame plating or the higher dense coating of plasma spraying bonding strength.
Two principal features of hypersonic flame spraying are: at a high speed, thereby make sprayed particle have very high kinetic energy and very short oxidation exposure duration; Relatively low temperature.Yet although hypersonic flame spraying has high speed and these two distinguishing features of relative low temperature, people wish that it can further obtain lower temperature on this basis.This be because, lower temperature helps making the particle (as carbide such as WC) of spraying to remain on only softening and infusible state before striking substrate surface, effectively avoided the fusing particle in spray gun gun barrel blocking problem so on the one hand, thereby the fusion and decomposition that has also suppressed carbide has on the other hand been avoided the variety of issue of its coating quality that brings.
Summary of the invention
The utility model aims to provide under a kind of situation that can keep original hypersonic flame spraying advantage, further reduces the supersonic flame sprayer of particle temperature.The technical scheme that the utility model adopted is as follows: a kind of supersonic flame sprayer, mainly form by combustion chamber, temperature-controlling chamber, De Laval noz(zle) and front end jet pipe; Wherein temperature-controlling chamber is between combustion chamber and De Laval noz(zle); The De Laval noz(zle) front end connects the front end jet pipe in order to powder particle is ejected; The combustion chamber is provided with fuel nozzle, oxygen ozzle and spark plug, thereby in order to feed fuel and oxygen and it is lighted generation high-temperature high-pressure fuel gas flame stream; Temperature-controlling chamber is provided with not active cooling gas nozzle, in order to spray into low temperature not reactive gas to reduce gas flow temperature; The connection section of De Laval noz(zle) and front end jet pipe is provided with powder-feeding mouth, in order to spray into the raw material powder particle.
The beneficial effects of the utility model are: cool off the not temperature-controlling chamber of reactive gas by being provided with to feed between combustion chamber and De Laval noz(zle), realized reduction to gas flow temperature, thereby effectively avoided the fusing particle in problems such as spray gun gun barrel obstructions thereby can make powder particle remain on only softening and infusible state, thereby can suppress the variety of issues such as coating quality that the fusion and decomposition of powder particle such as carbide etc. has avoided it to bring again.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
1. combustion chamber; 2. temperature-controlling chamber: 3. De Laval noz(zle): 4. front end jet pipe; 5. fuel nozzle; 6. oxygen ozzle; 7. spark plug; 8. not active cooling gas nozzle; 9. powder-feeding mouth.
Embodiment
As shown in Figure 1, the utility model supersonic flame sprayer, mainly form, also have the routine preparation of some supersonic flame sprayers in addition, the water-cooling system (not shown) of for example installing tube wall by combustion chamber 1, temperature-controlling chamber 2, De Laval noz(zle) 3 and front end jet pipe 4; Wherein temperature-controlling chamber 2 is between combustion chamber 1 and De Laval noz(zle) 3; De Laval noz(zle) 3 front ends connect front end jet pipe 4 in order to powder particle is ejected; Combustion chamber 1 is provided with fuel nozzle 5, oxygen ozzle 6 and spark plug 7, thereby in order to feed fuel and oxygen and it is lighted generation high-temperature high-pressure fuel gas flame stream; Temperature-controlling chamber 2 is provided with not active cooling gas nozzle 8, in order to spray into low temperature not reactive gas to reduce gas flow temperature; De Laval noz(zle) 3 is provided with powder-feeding mouth 9 with the connection section of front end jet pipe 4, in order to spray into the raw material powder particle.
Claims (1)
1. a supersonic flame sprayer mainly is made up of combustion chamber, temperature-controlling chamber, De Laval noz(zle) and front end jet pipe; Wherein temperature-controlling chamber is between combustion chamber and De Laval noz(zle); The De Laval noz(zle) front end connects the front end jet pipe in order to powder particle is ejected; The combustion chamber is provided with fuel nozzle, oxygen ozzle and spark plug, thereby in order to feed fuel and oxygen and it is lighted generation high-temperature high-pressure fuel gas flame stream; Temperature-controlling chamber is provided with not active cooling gas nozzle, in order to spray into low temperature not reactive gas to reduce gas flow temperature; The connection section of De Laval noz(zle) and front end jet pipe is provided with powder-feeding mouth, in order to spray into the raw material powder particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206310850U CN201933144U (en) | 2010-11-25 | 2010-11-25 | Supersonic flame-spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206310850U CN201933144U (en) | 2010-11-25 | 2010-11-25 | Supersonic flame-spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201933144U true CN201933144U (en) | 2011-08-17 |
Family
ID=44444677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206310850U Expired - Fee Related CN201933144U (en) | 2010-11-25 | 2010-11-25 | Supersonic flame-spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201933144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714172A (en) * | 2016-04-14 | 2016-06-29 | 国家电网公司 | Corrosion-resistant grounding grid metal ceramic coating material and preparation device and method thereof |
| CN112676054A (en) * | 2020-12-17 | 2021-04-20 | 青岛科技大学 | Vortex guide type supersonic flame spraying spray gun device |
-
2010
- 2010-11-25 CN CN2010206310850U patent/CN201933144U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714172A (en) * | 2016-04-14 | 2016-06-29 | 国家电网公司 | Corrosion-resistant grounding grid metal ceramic coating material and preparation device and method thereof |
| CN105714172B (en) * | 2016-04-14 | 2017-08-01 | 国家电网公司 | A kind of corrosion resistant grounded screen metal ceramic coating material and its preparation facilities and method |
| CN112676054A (en) * | 2020-12-17 | 2021-04-20 | 青岛科技大学 | Vortex guide type supersonic flame spraying spray gun device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111125 |