CN106222601B - A kind of air Supersonic Plasma Spraying device with two-part protection stomata - Google Patents
A kind of air Supersonic Plasma Spraying device with two-part protection stomata Download PDFInfo
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- CN106222601B CN106222601B CN201610796913.8A CN201610796913A CN106222601B CN 106222601 B CN106222601 B CN 106222601B CN 201610796913 A CN201610796913 A CN 201610796913A CN 106222601 B CN106222601 B CN 106222601B
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Abstract
The invention discloses the air Supersonic Plasma Spraying device for protecting stomata with two-part, including anode nozzle, front end is cylinder, and has central through hole, is additionally provided on the anode nozzle：Protect stomata; input end is arranged on anode nozzle periphery; outlet section is arranged on the anode nozzle front end face; the protection stomata includes first segment stomata and second segment stomata; the axis α at an acute angle of the axis and central through hole of the first segment stomata, the axis of the second segment stomata and the axis of central through hole are at acute angles beta；Powder feeding hole, input end are arranged on anode nozzle periphery, outlet end and central through hole unicom, and the axis of the powder feeding hole is vertical with the axis of central through hole.The configuration of the present invention is simple, no solid cover need not install water-cooling device additional, and installation, checks conveniently dismounting, can reduce the temperature of jet stream and the temperature of spraying particle, reduce the possibility of spraying particle oxidation.
Description
Technical field
The present invention relates to coat preparing technology field, more particularly to a kind of one air supersonic speed with two-part protection stomata
Plasma spray apparatus.
Background technology
Since titanium has excellent corrosion resistance, mechanical property and processing performance, it is widely used in national economy and is permitted
It is multidisciplinary, but the higher price of titanium, limit its more extensive, low cost application.According to statistics, China's titanium sponge yield in 2013 is
80000 tons, reach 60% or more, including chemical industry, ocean, warship using the dosage of titanium alloy corrosion resistance characteristic in the dosage of titanium
Ship, salt industry etc..The consumption of titanium is huge, and how to reduce titanium consumption is always problem in the industry.Thermal spraying prepares Ti and applies
Layer is to reduce titanium consumption, and low cost strengthens the effective way that surface is equipped under ocean and severe etching condition.Its main advantage
It is：(1) coating is thin, and thickness is generally less than 0.5mm；(2) wait for that anti-corrosion equipment can first manufacture forming, it is rear to spray, avoid titanium-steel compound
Easily there is the problem of defect in welding process in plate；(3) can on aluminum substrate prepares coating, mitigate weight of equipment；(4) titanium can be prepared
Base composite coating further increases coating performance by adding other elements.
But its disadvantage is also than more prominent, such as：(1) equipment (low-voltage plasma spraying, cold spraying) and dusty material are expensive,
It sprays of high cost；(2) workpiece size, shape are limited；(3) cannot in-situ spraying be implemented to Large-Scale Equipment outdoors；(4) big compression ring
It is high that border high temperature heat source prepares Ti coatings oxygen, nitrogen content.
There is no at present the ripe technology that can prepare Ti coatings outdoors to complex parts, even in atmospheric environment or
Successful case.
Invention content
The purpose of the present invention is overcoming, existing Supersonic Plasma Spraying device spraying is of high cost, size is larger, can be at family
The defect for implementing in-situ spraying to Large-Scale Equipment outside provides a kind of air supersonic speed plasma with two-part protection stomata
Spray equipment.
It is another object of the present invention to protect gas air inlet angle by optimization design, the protecting effect that spraying makes is improved, is prevented
Only coated powder is aoxidized.
Technical solution provided by the invention is：
A kind of air Supersonic Plasma Spraying device with two-part protection stomata, including anode nozzle, front end
For cylinder, and there is central through hole, is additionally provided on the anode nozzle：
Stomata, input end is protected to be arranged on anode nozzle periphery, outlet section is arranged in the anode nozzle front end face
On, the protection stomata includes first segment stomata and second segment stomata, the axis of the axis and central through hole of the first segment stomata
Line α at an acute angle, the axis of the second segment stomata and the axis of central through hole are at acute angles beta；
Powder feeding hole, input end are arranged on anode nozzle periphery, outlet end and central through hole unicom, and described send
The axis in powder hole is vertical with the axis of central through hole.
Preferably, there are two the protection stomata settings, and it is positioned opposite.
Preferably, there are two the powder feeding hole settings, and it is positioned opposite.
Preferably, two protection stomatas and two powder feeding holes are evenly arranged along anode nozzle circumferencial direction interval.
Preferably, the angles α are 40~65 °.
Preferably, the angles β are 0~25 °.
Preferably, the diameter d of the protection stomata is 2~2.5mm.
Preferably, the distance between the protection stomata input end center and anode nozzle front end face L1For 8~10mm.
Preferably, the distance between the protection stomata outlet end center and anode nozzle axis L2For 2.5~
3.5mm。
Preferably, the axis of the protection stomata and the axis angle α of central through hole meet：
Wherein, v is powder feeding throughput, and T is environment temperature.
Beneficial effects of the present invention are embodied in the following aspects：
(1) simple in structure, no solid cover need not install water-cooling device additional, and installation, checks conveniently dismounting.
(2) sprayed on material is not easy to be adhered on nozzle bore.
(3) protection gas plays jet stream and atmospheric environment certain buffer action, can reduce spraying particle in jet stream
Oxidation.
(4) protection gas plays jet stream certain cooling effect, to reduce the temperature of jet stream and the temperature of spraying particle,
Reduce the possibility of spraying particle oxidation.
(5) compared with solid cover, spray distance is unrestricted.
(6) it can be needed to select different types of protection gas according to spraying, such as in order to reduce the oxidation and nitridation of sprayed on material,
It is protection gas that Ar, which can be used,；In order to improve sprayed on material nitriding result, it is protection gas that N2, which can be used, at this time for a kind of reaction etc. from
Son spraying.
Description of the drawings
Fig. 1 is the air Supersonic Plasma Spraying equipments overall structure of the present invention that stomata is protected with two-part
Schematic diagram.
Fig. 2 is anode nozzle front view of the present invention.
Fig. 3 is anode nozzle sectional view along A-A of the present invention.
Fig. 4 is anode nozzle B-B direction sectional view of the present invention.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
As shown in Figure 1, the present invention provides a kind of air Supersonic Plasma Spraying dresses for protecting stomata with two-part
Set, including gun platform 1, gun body pressure cap 2, gun body 3, insulator 4, gas cyclone ring 5, powder feeding frame 6, nozzle pressure cap 7, anode nozzle 8,
It is flow-guiding structure 9, cathode taps 10, rear insulator 11, water inlet 12, plasma gas import 13, water outlet 14, cathode 15, whole
Gasket 16, rear insulation pressure cap 17, cathode pressure cap 18.
As shown in Figure 2, Figure 3, Figure 4, the anode nozzle 8 is in revolution shape, and front end is cylinder, and in anode
It is provided with central through hole 801 at the central axis of nozzle 8, protection stomata 802 and powder feeding hole are additionally provided on the anode nozzle 8
803.Wherein protection stomata 802 be anode nozzle 8 input end on the circumferential surface, outlet section is located at the front end of anode nozzle 8
On face.Protection stomata 802 is set as two-part, including first segment stomata and second segment stomata, the center of the first segment stomata
α at an acute angle between axis and the axis of central through hole, between the central axis and the axis of central through hole of the second segment stomata
In the angles β；Protect a diameter of d of stomata 802.And input end center and the anode nozzle front end face of the protection stomata 802
Distance L1, the distance between the protection stomata outlet end center and anode nozzle axis L2。
There are two the settings of protection stomata 802, and the central axis relative to anode nozzle 8 is arranged symmetrically.
803 input end of the powder feeding hole is arranged on 8 periphery of anode nozzle, and the outlet end of powder feeding hole 803 is in
Heart through-hole unicom, and the axis of the powder feeding hole 803 is vertical with the axis of central through hole.The powder feeding hole 803 is also equipped with
Two, and the central axis relative to anode nozzle 8 is arranged symmetrically.Between adjacent protection stomata 802 and powder feeding hole 803
Phase angle on 8 periphery of anode nozzle is 90 degree.
The axis of the first segment stomata and the axis angle α of central through hole meet：
Wherein, v is powder feeding throughput, and T is environment temperature.
By the design of above-mentioned protection gas air inlet angle, the protecting effect that spraying makes can be improved, coated powder quilt is prevented
Oxidation.
The angles α are 40~65 °, and the angles β are 0~25 °, and it is 2~2.5mm to protect the diameter d of stomata, protects stomata input end
Center is 8~10mm with anode nozzle front end face distance L, between the protection stomata outlet end center and anode nozzle axis
Distance L2For 2.5~3.5mm.
According to the needs of protection gas actual condition, Ar, He, CO2, O2 or N2 etc. is selected to be linked into protection stomata 802.Spraying
When, protection gas is sent to plasma jet, due to the speed of plasma jet by protection stomata 802 from opposite both direction
Stronger with rigidity, protection gas and jet stream have certain angle, thus protect gas will not hard shower, simultaneously because protection gas injects jet stream
It still will not be repelled in nozzle interior afterwards, therefore protection gas gas hood can be formed around jet stream along jet direction.
When being sprayed, parameter selection is as follows：
Ar flows：100~190L/min；
Ar pressure：1~1.3MPa；
He flows：5~30L/min；
He pressure：1~1.2MPa；
Operating voltage：80~130V；
Operating current：250~350A；
Powder sending quantity：15~50g/min；
Powder feeding atmospheric pressure：0.5~0.8MPa；
Powder feeding throughput：6~15L/min；
Spray distance：60~90mm.
The air Supersonic Plasma Spraying device provided by the invention for forming protection gas hood, has the following advantages：
(1) simple in structure, no solid cover need not install water-cooling device additional, and installation, checks conveniently dismounting.
(2) sprayed on material is not easy to be adhered on nozzle bore.
(3) protection gas plays jet stream and atmospheric environment certain buffer action, can reduce spraying particle in jet stream
Oxidation.
(4) protection gas plays jet stream certain cooling effect, to reduce the temperature of jet stream and the temperature of spraying particle,
Reduce the possibility of spraying particle oxidation.
(5) compared with solid cover, spray distance is unrestricted.
(6) it can be needed to select different types of protection gas according to spraying, such as in order to reduce the oxidation and nitridation of sprayed on material,
It is protection gas that Ar, which can be used,；In order to improve sprayed on material nitriding result, it is protection gas that N2, which can be used, at this time for a kind of reaction etc. from
Son spraying.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (9)
1. a kind of air Supersonic Plasma Spraying device with two-part protection stomata, which is characterized in that sprayed including anode
Mouth, front end is cylinder, and has central through hole, is additionally provided on the anode nozzle：
Stomata, input end is protected to be arranged on anode nozzle periphery, outlet section is arranged on the anode nozzle front end face, institute
It includes first segment stomata and second segment stomata to state protection stomata, and the axis of the first segment stomata and the axis of central through hole are in sharp
Angle α, the axis of the second segment stomata and the axis of central through hole are at acute angles beta；
The axis of the protection stomata and the axis angle α of central through hole meet：
Wherein, v is powder feeding throughput, and T is environment temperature, L1It protects between stomata input end center and anode nozzle front end face
Distance is L2It is the diameter for protecting stomata to protect the distance between stomata outlet end center and anode nozzle axis, d；
Powder feeding hole, input end are arranged on anode nozzle periphery, outlet end and central through hole unicom, and the powder feeding hole
Axis it is vertical with the axis of central through hole.
2. the air Supersonic Plasma Spraying device according to claim 1 with two-part protection stomata, feature
It is, there are two the protection stomata settings, and positioned opposite.
3. the air Supersonic Plasma Spraying device according to claim 2 with two-part protection stomata, feature
It is, there are two the powder feeding hole settings, and positioned opposite.
4. the air Supersonic Plasma Spraying device according to claim 3 with two-part protection stomata, feature
It is, two protection stomatas and two powder feeding holes are evenly arranged along anode nozzle circumferencial direction interval.
5. the air Supersonic Plasma Spraying device according to claim 1 with two-part protection stomata, feature
It is, the angles α are 40~65 °.
6. the air Supersonic Plasma Spraying device according to claim 1 with two-part protection stomata, feature
It is, the angles β are 0~25 °.
7. the air Supersonic Plasma Spraying device according to claim 1 with two-part protection stomata, feature
It is, the diameter d of the protection stomata is 2~2.5mm.
8. the air Supersonic Plasma Spraying device according to claim 7 with two-part protection stomata, feature
It is, the distance between the protection stomata input end center and anode nozzle front end face L1For 8~10mm.
9. the air Supersonic Plasma Spraying device according to claim 8 with two-part protection stomata, feature
It is, the distance between the protection stomata outlet end center and anode nozzle axis L2For 2.5~3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796913.8A CN106222601B (en) | 2016-08-31 | 2016-08-31 | A kind of air Supersonic Plasma Spraying device with two-part protection stomata |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796913.8A CN106222601B (en) | 2016-08-31 | 2016-08-31 | A kind of air Supersonic Plasma Spraying device with two-part protection stomata |
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| CN106222601A CN106222601A (en) | 2016-12-14 |
| CN106222601B true CN106222601B (en) | 2018-07-17 |
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| CN201610796913.8A Active CN106222601B (en) | 2016-08-31 | 2016-08-31 | A kind of air Supersonic Plasma Spraying device with two-part protection stomata |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5573682A (en) * | 1995-04-20 | 1996-11-12 | Plasma Processes | Plasma spray nozzle with low overspray and collimated flow |
| CN102725071A (en) * | 2010-01-28 | 2012-10-10 | 西门子公司 | Spray nozzle and method for atmospheric spraying, device for coating, and coated component |
| CN104244557A (en) * | 2014-08-11 | 2014-12-24 | 北京交通大学 | Atmosphere protection coaxial powder feeding plasma gun |
-
2016
- 2016-08-31 CN CN201610796913.8A patent/CN106222601B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5573682A (en) * | 1995-04-20 | 1996-11-12 | Plasma Processes | Plasma spray nozzle with low overspray and collimated flow |
| CN102725071A (en) * | 2010-01-28 | 2012-10-10 | 西门子公司 | Spray nozzle and method for atmospheric spraying, device for coating, and coated component |
| CN104244557A (en) * | 2014-08-11 | 2014-12-24 | 北京交通大学 | Atmosphere protection coaxial powder feeding plasma gun |
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| Publication number | Publication date |
|---|---|
| CN106222601A (en) | 2016-12-14 |
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