CN106399892A - Thermal spraying method and device thereof - Google Patents
Thermal spraying method and device thereof Download PDFInfo
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- CN106399892A CN106399892A CN201611079107.5A CN201611079107A CN106399892A CN 106399892 A CN106399892 A CN 106399892A CN 201611079107 A CN201611079107 A CN 201611079107A CN 106399892 A CN106399892 A CN 106399892A
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- spraying
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
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Abstract
The invention provides a thermal spraying method and device thereof. The method comprises the steps of heating an area to be sprayed through at least one heat source while the area to be sprayed is about to move to a spraying gun outlet during thermal spraying, and then spraying the heated area. According to the technical scheme, the body temperature of some large-size part can be maintained at about 100 DEG C during the large-size part is sprayed in cold weather, so that the deposition efficiency can be increased from 15% to 20%, the powder and energy consumption can be saved, and the production efficiency can be improved.
Description
Technical field
The present invention relates to field of machining, it is specifically related to field of thermal spray, more particularly to a kind of thermal spraying
Method and its equipment.
Background technology
Thermal spraying have simple to operate, low cost and prepare workpiece universal strong the features such as, in Aero-Space, iron and steel, ore deposit
The fields such as product, automobile are widely used.Thermal spraying is (as electric arc, plasma spraying or burning using certain thermal source
Flame etc.) powder or thread metal or nonmetallic materials are heated to melting or semi-molten state, then by flame stream originally
Body or compressed air are ejected into pretreated matrix surface with certain speed, deposit and form the surface painting with various functions
A kind of technology of layer.
The apparent condition of matrix has a significant impact to the quality of hot-spraying coating.Wherein, the knot to coating for the temperature of matrix
Conjunction intensity, stress state, the deposition efficiency of spraying have a significant impact.In spraying process, the substrate temperature general control of part exists
150 DEG C about；The functional coating of some particular/special requirements even requires substrate temperature to reach 600 DEG C.
For small-sized part, part thermal capacity is little, and radiating is slow, and the spraying of the same area is spaced short, base in spraying process
Body is easily overheated, needs to carry out purging reducing substrate temperature using compressed air.For heavy parts, part thermal capacity
Greatly, rapid heat dissipation, the spraying interval length of the same area, substrate temperature is difficult to raise；Need empty using compression in spraying process simultaneously
Air-blowing is swept and is not deposited dust, also reduces substrate temperature.
In current actual hot-spraying coating preparation process, substrate temperature preheats generally by spray gun, resistance furnace carries
Compressed air purging in front preheating and spraying process is controlled, but process above all compares to the accuracy of temperature control of matrix
Difference, is difficult to improve the temperature of matrix area to be sprayed for large-scale part.
The coloured institute in Guangzhou Deng Chunming et al. has invented a kind of matrix attemperating unit (Authorization Notice No. for thermal spraying：
CN203200333U), this device can suitably adjust the temperature of matrix in some temperature according to the type of matrix and sprayed on material
On degree point.This device cleverly connects box using matrix temperature controller, substrate temperature and sample clamp is combined into matrix attemperating unit
Structure, realize precise control is carried out to substrate temperature.This device be especially suitable for test piece substrate temperature control, but be not suitable for right
The substrate temperature of heavy parts is controlled.
In view of the foregoing, the special proposition present invention.
Content of the invention
It is an object of the present invention to provide a kind of heat spraying method；
Another object of the present invention is to providing a kind of thermal spraying apparatus.
For reaching above-mentioned purpose, on the one hand, the invention provides a kind of heat spraying method, wherein, methods described is included in heat
During spraying, heated using the area to be sprayed that at least one thermal source will move to spraying outlet, then to through adding
The region of heat is sprayed.
According to some specific embodiments of the present invention, wherein, described thermal source is selected from infrared source and/or thermojet air-flow.
According to some specific embodiments of the present invention, wherein, described infrared source is selected from xenon lamp, Halogen light, Infrared Heating
Deng and one or more of laser instrument.
According to some specific embodiments of the present invention, wherein, described thermojet air-flow be will be used for spraying before to be sprayed
The compressed air that region is purged is carried out plus thermogenetic.
According to some specific embodiments of the present invention, wherein, methods described also include using compressed air to spraying after
Region is purged.
According to some specific embodiments of the present invention, wherein, again to spray after methods described also includes heating compressed air
Region after painting is purged.
Some conventional heating means and device can be adopted to compressed air heating, Serpentiss are such as arranged on compressed air hose
The thermal resistance of shape pipe, hollow pipe etc is heated, or is heated using conventional pipeline heater.
According to some specific embodiments of the present invention, wherein, described thermal spraying is to be sprayed with spray gun.
According to some specific embodiments of the present invention, wherein, methods described includes being heated using infrared source, wherein
Infrared source is arranged on the support of spray gun.
Wherein it is understood that the present invention heats to area to be sprayed, and by thermal current to spraying back zone
Domain is purged, and wherein the temperature of each several part can be set according to the material of spraying coating process and spraying.Such as, can heat
To 100 DEG C about.
The area of the area to be sprayed of the present invention is suitable with the area of the beam spot that spray gun is formed on matrix, concrete area according to
Determine according to spraying coating process, spray gun model, different spray gun, area is different, usually diameter 10-40mm.
Area to be sprayed is close to spraying area, and the distance with spray gun is spray distance.
Depending on during spraying, the translational speed of spray gun is according to technological requirement, usually 200-700mm/s.
On the other hand, present invention also offers a kind of thermal spraying apparatus, described equipment includes spray gun 2 He for thermal spraying
At least one thermal source, described thermal source is arranged on the position that the area to be sprayed that spray gun will can be moved to is heated.
According to some specific embodiments of the present invention, wherein, described thermal source is selected from infrared source 3 and/or thermojet air-flow.
According to some specific embodiments of the present invention, wherein, described infrared source 3 is selected from xenon lamp, Halogen light, Infrared Heating
Deng and one or more of laser instrument.
According to some specific embodiments of the present invention, wherein, described thermal source at least includes infrared source 3, described heat radiation
Source is arranged on the gun stand 1 for arranging spray gun 2.
According to some specific embodiments of the present invention, wherein, at least purging to area to be sprayed for before spraying
The first compressed air hose 41 on arrange heater 101.
According to some specific embodiments of the present invention, wherein, also set up the second air compressed pipe 42 with to the area after spraying
Domain is purged.
According to some specific embodiments of the present invention, wherein, in the first compressed air hose 41 and the second air compressed pipe 42
Upper difference each setting heater 101,102.
According to some specific embodiments of the present invention, wherein, described heater is thermal resistance.
According to some specific embodiments of the present invention, wherein, described first compressed air hose 41 is spray with the distance of spray gun 2
The flame stream applying beats 1 to 10 times of the diameter of the speckle on part base solid.
According to some specific embodiments of the present invention, wherein, described second compressed air hose 42 is spray with the distance of spray gun 2
The flame stream applying beats 1 to 10 times of the diameter of the speckle on part base solid.
In sum, the invention provides a kind of heat spraying method and its equipment.The method of the present invention has the advantage that：
The reality of technique by adopting technical scheme, can be ensured when severe weather conditions or accessory size are larger
Apply；(such as when cold snap sprays certain heavy parts, substrate temperature maintains 100 DEG C of left sides can to improve and maintain substrate temperature
Right), the deposition efficiency greatly improving, deposition efficiency brings up to 20% by 15%, saves powder and energy resource consumption, improves and produces
Efficiency.
Brief description
Fig. 1 is the equipment of the embodiment of the present invention 1.
Wherein, 1- gun stand, 2- spray gun, 3- infrared source, 41,42- compressed air hose, 5- area to be sprayed, 6- sprays
Apply region, 7- coating, 8- part base solid, 91,92- compressed air heater, arrow-spray gun moving direction.
Specific embodiment
Describe the implementation process of the present invention and the beneficial effect of generation below by way of specific embodiment in detail it is intended to help read
Reader more fully understands essence and the feature of the present invention, not as to this case can practical range restriction.
Embodiment 1
The annulus that 1.5 meters of diameter, end face plasma spraying chromium oxide.Before not using the present invention, part continuous spray, part
Substrate temperature be slowly raised 65 DEG C about after 1 hour for 20 DEG C from room temperature, and be maintained at 65 DEG C about until spraying knot
Bundle.Using the equipment of the present invention, as shown in figure 1, heat lamp 3 is accommodated on gun stand 1, and focus on spray gun next
Moving area 5, focused spot about 12mm；The compressed air of muzzle carries out adding using pipeline heater 91 and 92 pairs of compressed airs
Heat, heating-up temperature is set as 100 DEG C, and other regions of part carry out cooling purging using the compressed air of room temperature.By more than
The substrate temperature of technical scheme part can reach 100 DEG C about quickly.
Claims (10)
1. a kind of heat spraying method, wherein, methods described include in thermal spraying, using at least one thermal source to lance outlet be
The area to be sprayed that will be moved into is heated, and then sprays to through the region of heating；(preferably described thermal spraying is to use
Spray gun is sprayed).
2. method according to claim 1, wherein, described thermal source is selected from infrared source and/or thermojet air-flow.
3. method according to claim 2, wherein, described infrared source is selected from xenon lamp, Halogen light, Infrared Heating etc. and swashs
One or more of light device.
4. method according to claim 1, wherein, described thermojet air-flow is before being used for spraying, area to be sprayed will to be entered
The compressed air of row purging is carried out plus thermogenetic；(preferably methods described is also included using compressed air to the region after spraying
Purged；Again the region after spraying is purged after more preferably compressed air being heated).
5. method according to claim 1, wherein, methods described includes being heated using infrared source, wherein hot spoke
The source of penetrating is arranged on the support of spray gun.
6. a kind of thermal spraying apparatus, described equipment includes the spray gun (2) and at least one thermal source for thermal spraying, and described thermal source sets
Put the position heated in the area to be sprayed that spray gun will can be moved to.
7. equipment according to claim 6, wherein, described thermal source is selected from infrared source (3) and/or thermojet air-flow.
8. equipment according to claim 7, wherein, described infrared source (3) is selected from xenon lamp, Halogen light, Infrared Heating etc.
One or more of with laser instrument.
9. equipment according to claim 7, wherein, described thermal source at least includes infrared source (3), and described infrared source sets
Put in the gun stand (1) for arranging spray gun (2).
10. equipment according to claim 7, wherein, in the first pressure for being purged to area to be sprayed before spraying
Contracting air hose (41) is upper to arrange heater (101)；(preferably also set up the second air compressed pipe (42) to enter to the region after spraying
Row purging；More preferably the upper each setting heater respectively of the first compressed air hose (41) and the second air compressed pipe (42) (101,
102)).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079107.5A CN106399892A (en) | 2016-11-30 | 2016-11-30 | Thermal spraying method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079107.5A CN106399892A (en) | 2016-11-30 | 2016-11-30 | Thermal spraying method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106399892A true CN106399892A (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611079107.5A Pending CN106399892A (en) | 2016-11-30 | 2016-11-30 | Thermal spraying method and device thereof |
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| Country | Link |
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| CN (1) | CN106399892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054614A (en) * | 2019-12-19 | 2020-04-24 | 上海骋润高分子材料有限公司 | Thermal spraying method for workpiece surface |
| CN113174555A (en) * | 2020-01-08 | 2021-07-27 | 通用电气公司 | Ceramic coating formation using temperature controlled gas flow to smooth surfaces |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989647A (en) * | 1997-04-28 | 1999-11-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Heat-treatment device and process |
| CN203200333U (en) * | 2013-03-23 | 2013-09-18 | 广州有色金属研究院 | Base body temperature controlling device for thermal spraying |
| CN205217194U (en) * | 2015-12-05 | 2016-05-11 | 天津市博跃达金属制品有限公司 | Hot spraying device with preheat cooling function |
| CN205392838U (en) * | 2016-02-26 | 2016-07-27 | 安徽工业大学 | Tubular metal resonator hot spraying device |
| CN206328448U (en) * | 2016-11-30 | 2017-07-14 | 国家电网公司 | A kind of thermal spraying apparatus |
-
2016
- 2016-11-30 CN CN201611079107.5A patent/CN106399892A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989647A (en) * | 1997-04-28 | 1999-11-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Heat-treatment device and process |
| CN203200333U (en) * | 2013-03-23 | 2013-09-18 | 广州有色金属研究院 | Base body temperature controlling device for thermal spraying |
| CN205217194U (en) * | 2015-12-05 | 2016-05-11 | 天津市博跃达金属制品有限公司 | Hot spraying device with preheat cooling function |
| CN205392838U (en) * | 2016-02-26 | 2016-07-27 | 安徽工业大学 | Tubular metal resonator hot spraying device |
| CN206328448U (en) * | 2016-11-30 | 2017-07-14 | 国家电网公司 | A kind of thermal spraying apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054614A (en) * | 2019-12-19 | 2020-04-24 | 上海骋润高分子材料有限公司 | Thermal spraying method for workpiece surface |
| CN113174555A (en) * | 2020-01-08 | 2021-07-27 | 通用电气公司 | Ceramic coating formation using temperature controlled gas flow to smooth surfaces |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |