CN102019263B - Three-loop plasma spray coating multifunctional atmosphere control device - Google Patents
Three-loop plasma spray coating multifunctional atmosphere control device Download PDFInfo
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- CN102019263B CN102019263B CN200910092663XA CN200910092663A CN102019263B CN 102019263 B CN102019263 B CN 102019263B CN 200910092663X A CN200910092663X A CN 200910092663XA CN 200910092663 A CN200910092663 A CN 200910092663A CN 102019263 B CN102019263 B CN 102019263B
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Abstract
The invention relates to a three-loop plasma spray coating multifunctional atmosphere control device. The device comprises a gas distribution box, rubber hoses, sealing rings, a gas flow nozzle back plate and a gas flow nozzle, wherein the gas distribution box is provided with a gas inlet and three gas outlets; the gas outlets are provided with gas pressure adjusting valves; the surface of the gas flow nozzle back plate is provided with three coaxial loops; each loop is provided with two gas inlets; the surface of the gas flow nozzle is provided with three gas holes which are uniformly distributed in the circumferential direction and correspond to the three loops of the gas flow nozzle back plate; the side wall of the gas hole close to the center of a circle is provided with a through groove; the middle gas hole is a stepped through hole; and the gas hole on the outermost ring has the same shape as that of the middle gas hole; a gas source is connected with the gas inlet of the gas distribution box; the three gas outlets are communicated with the gas inlets on the three loops of the gas flow nozzle back plate through the rubber hoses respectively; the gas flow nozzle is buckled and fixed on the gas flow nozzle back plate; and the loops are isolated by the sealing rings. The device is suitable for atmosphere control during atmospheric plasma spray coating of special powder.
Description
Technical field
The present invention relates to a kind of three loop plasma spray coating multifunctional atmosphere control devices, the atmosphere control when being used for the air plasma spraying special powder belongs to field of surface engineering technique.
Background technology
Air plasma spraying (APS) is the effective means that obtains the function of surface coating, has the production efficiency height, coating quality is good, the sprayed on material scope wide, low cost and other advantages.Therefore, in recent decades, the progress of this technology and production application development are very fast, now have been widely used in the fields such as nuclear energy, Aero-Space, petrochemical industry, machinery.But in some special material coatings of preparation, powder is through plasma heating, self temperature raises, even reach more than the fusing point, because the air plasma spraying surrounding environment is atmospheric environment, powder is in flight course and the moment that forms coating, very easily react with gases such as airborne oxygen, nitrogen, generate a large amount of oxide or nitride, cause the change of starting powder self, not only affected the serviceability of coating, and can cause the decline of the mechanical properties such as bond strength of coating, in use too early inefficacy.
At present, when solving the problem that powder reacts in the Plasma Spraying Process Using both at home and abroad, the main method that adopts is low-voltage plasma spraying or vacuum plasma spray coating, but, based on the problem that runs into unavoidably part cooling and dedusting in the Plasma Spraying Process Using, more than two kinds of methods realize comparatively difficulty, production cost improves greatly, under complex working condition, can't achieve the goal, in addition, comparatively harsh to shape and the size requirements of part.Both at home and abroad the device of relevant atmosphere control mostly is the simple gases cover, and is used for electric arc spraying and spray painting field but not the plasma spraying field.
For this reason, need to find a kind of method, under the prerequisite that guarantees powder particle state of flight and coating quality, make these special dusty materials in Plasma Spraying Process Using with the isolated generation of coming to prevent adverse reaction of atmospheric environment on every side.
Summary of the invention
The invention provides a kind of three loop plasma spray coating multifunctional atmosphere control devices, can be formed on by the circuit of air current spray nozzle backboard in the device plasma arc and powder stream specific gas environment on every side, make high temperature powder particle and atmospheric isolation to prevent the generation of adverse reaction.
A kind of three loop plasma spray coating multifunctional atmosphere control devices comprise gas distributor disk, rubber hose, sealing ring, air current spray nozzle backboard and air current spray nozzle, and ancillary equipment is source of the gas and ion spray gun; Wherein gas distributor disk one side arranges a tubulose air inlet, and vertical direction arranges three tubulose gas outlets, installing gas pressure regulator valve on the tubulose gas outlet; The air current spray nozzle backboard is the open circles plate-like, and there are three coaxial circuits on the surface, and each circuit arranges two air inlets; Air current spray nozzle is ring-like shelly hardware, and its surface has the circumferential uniform pore in three roads corresponding with three circuits of air current spray nozzle backboard; Pore sidewall near the center of circle has the groove parallel with circle central axis, and middle pore is a step through-hole, and the hole corresponding with circuit is macropore, and the pore of outmost turns is consistent with middle pore external form; Source of the gas is a kind of in nitrogen, carbon dioxide or the inert gas; Its annexation is: source of the gas links to each other with the tubulose air inlet of gas distributor disk, three tubulose gas outlets are connected with air inlet on three circuits of air current spray nozzle backboard respectively by rubber hose, air current spray nozzle is buckled on the air current spray nozzle backboard and fixes, adopt sealing ring to separate between circuit and the circuit, the ion spray gun is fixedly mounted on the center of air current spray nozzle backboard.
Working method: during work, source of the gas is filled with gas in the gas distributor disk by the tubulose air inlet, then the air inlet by tubulose gas outlet, rubber hose and air current spray nozzle backboard enters in three circuits of air current spray nozzle backboard successively, controls the size of atmospheric pressure on the tubulose gas outlet separately by gas pressure regulating valve; Because three circuits be closed environment each other, gas can only be discharged by the pore on the air current spray nozzle of circuit top separately, therefore forms three layers of coaxial shielding gas and flows.
Beneficial effect: the present invention guaranteeing on the basis of coating quality, can effectively stop powder in spraying process with the element reactions such as airborne oxygen, nitrogen; Provide a kind of effective cooling way for the plasma spraying equipment platform simultaneously; Can move freely with the ion spray gun, with part and the complicated track that adapts to complicated shape; The present invention can also make oxide and the nitride in the coating significantly reduce, and obtains fine and close coating, and then improves quality and the service life of coating.
Description of drawings
Fig. 1 is the gas distributor disk structural representation of the present invention's three loop plasma spray coating multifunctional atmosphere control devices
Fig. 2 is the air current spray nozzle back board structure schematic diagram of the present invention's three loop plasma spray coating multifunctional atmosphere control devices
Fig. 3 is the air current spray nozzle structural representation of the present invention's three loop plasma spray coating multifunctional atmosphere control devices
Fig. 4 is the overall structure schematic diagram of the present invention's three loop plasma spray coating multifunctional atmosphere control devices
Wherein: 1-tubulose air inlet, 2-gas distributor disk, 3-tubulose gas outlet, 4-gas pressure regulating valve, 5-air current spray nozzle backboard, 6-air inlet, 7-air current spray nozzle
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing
Fig. 1 is gas distributor disk structural representation, gas distributor disk one side arranges a tubulose air inlet 1, vertical direction arranges three tubulose gas outlets 3, installing gas pressure regulator valve 4 on the tubulose gas outlet 3, Fig. 2 is air current spray nozzle backboard 5 structural representations, air current spray nozzle backboard 5 is the open circles plate-like, and there are three coaxial circuits on the surface, and each circuit arranges two air inlets 6; As shown in Figure 3, air current spray nozzle 7 has circumferentially uniform pore of three roads, pore near the center of circle is uniformly distributed along the circumference 50, hole diameter is 4mm, sidewall width is the groove of 2mm, and air-flow sprays along groove after entering Φ 4mm hole, direction be plasma gun radially, for plasma beam provides the ground floor shielding gas flow; Middle pore is a step through-hole, is uniformly distributed along the circumference 50, and the large bore dia of stepped hole is 6mm, and hole diameter is 2mm; Pore external form and the consistent size of the pore of outmost turns and centre are uniformly distributed along the circumference 60.Air current spray nozzle 7 and air current spray nozzle backboard 5 are connected by screw fit, adopt sealing rubber ring to separate between circuit and the circuit, prevent that under the different pressures condition, air leakage affects the protective atmosphere environment, and the ion spray gun then is fixedly mounted on the center of air current spray nozzle backboard.
Source of the gas links to each other with the tubulose air inlet 1 of gas distributor disk 2, and three tubulose gas outlets 3 are connected with air inlet 6 on 5 three circuits of air current spray nozzle backboard respectively by rubber hose.
During work, source of the gas is filled with nitrogen in the gas distributor disk 2 by tubulose air inlet 1, then the air inlet 6 by tubulose gas outlet 3, rubber hose and air current spray nozzle backboard 5 enters in three circuits of air current spray nozzle backboard 5 successively, controls the size of atmospheric pressure on the tubulose gas outlet 3 separately by gas pressure regulating valve 4; Because three circuits be closed environment each other, gas can only be discharged by the pore on the air current spray nozzle 7 of circuit top separately, therefore forms three layers of coaxial shielding gas and flows.
The present invention includes but be not limited to above embodiment, every carrying out under the spirit and principles in the present invention any local improvement or be equal to replacement and all will be considered as within protection scope of the present invention.
Claims (2)
1. loop plasma spray coating multifunctional atmosphere control device, comprise gas distributor disk (2), rubber hose, sealing ring, gas pressure regulating valve (4), air current spray nozzle backboard (5) and air current spray nozzle (7), ancillary equipment is source of the gas and ion spray gun; It is characterized in that: gas distributor disk (2) one sides arrange a tubulose air inlet (1), and vertical direction arranges three tubulose gas outlets (3), tubulose gas outlet (3) upper installing gas pressure regulator valve (4); Air current spray nozzle backboard (5) is the open circles plate-like, and there are three coaxial circuits on the surface, and each circuit is not put two air inlets (6); Air current spray nozzle (7) is ring-like shelly hardware, and its surface has the circumferential uniform pore in three roads corresponding with three circuits of air current spray nozzle backboard (5); Pore sidewall near the center of circle has the groove parallel with circle central axis, and middle pore is a step through-hole, and the hole corresponding with circuit is macropore, and the pore of outmost turns is consistent with middle pore external form; Its annexation is: source of the gas links to each other with the tubulose air inlet (1) of gas distributor disk (2), three tubulose gas outlets (3) are connected with air inlet (6) on (5) three circuits of air current spray nozzle backboard respectively by rubber hose, it is upper and fixing that air current spray nozzle (7) is buckled in air current spray nozzle backboard (5), adopt sealing ring to separate between circuit and the circuit, the ion spray gun is contained in the center of air current spray nozzle backboard (5) with Dingan County.
2. a kind of three loop plasma spray coating multifunctional atmosphere control devices as claimed in claim 1 is characterized in that gas in the described source of the gas is a kind of in nitrogen, carbon dioxide or the inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910092663XA CN102019263B (en) | 2009-09-16 | 2009-09-16 | Three-loop plasma spray coating multifunctional atmosphere control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910092663XA CN102019263B (en) | 2009-09-16 | 2009-09-16 | Three-loop plasma spray coating multifunctional atmosphere control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102019263A CN102019263A (en) | 2011-04-20 |
| CN102019263B true CN102019263B (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910092663XA Expired - Fee Related CN102019263B (en) | 2009-09-16 | 2009-09-16 | Three-loop plasma spray coating multifunctional atmosphere control device |
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| Country | Link |
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| CN (1) | CN102019263B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618815B (en) * | 2012-05-09 | 2014-05-21 | 厦门映日新材料科技有限公司 | Plasma jet-stream protective cover |
| CN104213066B (en) * | 2014-07-07 | 2016-09-14 | 北京理工大学 | The method controlling the oxidizable coating of atmosphere plasma spraying under air open environment |
| CN104250719B (en) * | 2014-07-07 | 2016-10-26 | 北京理工大学 | Atmosphere plasma spray apparatus is controlled under air open environment |
| CN115505864B (en) * | 2022-08-08 | 2023-12-29 | 中国人民解放军陆军装甲兵学院 | Small-size axial powder feeding inner hole plasma spraying gun |
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2009
- 2009-09-16 CN CN200910092663XA patent/CN102019263B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102019263A (en) | 2011-04-20 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Fuchi Inventor after: Liu Yanbo Inventor after: Zhou Fangji Inventor after: Ni Chuanhao Inventor after: Du Zhong Inventor after: Ma Zhuang Inventor before: Ma Zhuang Inventor before: Zhou Fangji Inventor before: Liu Yanbo Inventor before: Wang Fuchi Inventor before: Ni Chuanhao Inventor before: Du Zhong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: MA ZHUANG ZHOU FANGJI LIU YANBO WANG FUCHI NI CHUANHAO DU ZHONG TO: WANG FUCHI LIU YANBO ZHOU FANGJI NI CHUANHAO DU ZHONG MA ZHUANG |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130916 |