CN113957430A - Thermal-ultrasonic blade coating device and blade coating method - Google Patents
Thermal-ultrasonic blade coating device and blade coating method Download PDFInfo
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- CN113957430A CN113957430A CN202111155932.XA CN202111155932A CN113957430A CN 113957430 A CN113957430 A CN 113957430A CN 202111155932 A CN202111155932 A CN 202111155932A CN 113957430 A CN113957430 A CN 113957430A
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- 238000000576 coating method Methods 0.000 title claims abstract description 105
- 239000011248 coating agent Substances 0.000 title claims abstract description 99
- 239000000843 powder Substances 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000007790 scraping Methods 0.000 claims description 42
- 239000007789 gas Substances 0.000 claims description 20
- 239000012720 thermal barrier coating Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 8
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000002923 metal particle Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 230000026683 transduction Effects 0.000 description 3
- 238000010361 transduction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005328 electron beam physical vapour deposition Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000002103 nanocoating Substances 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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Images
Classifications
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
Abstract
The invention discloses a thermal-ultrasonic blade coating device and a blade coating method, wherein a blade coating nozzle structure with a nozzle channel in the middle is utilized, an electromagnetic heating coil and an ultrasonic oscillator are sleeved on the outer ring of the blade coating nozzle, a powder feeding pipe communicated with the nozzle channel is arranged at the upper end of the blade coating nozzle, a powder feeding channel is arranged at one side of the lower end of the nozzle channel, and a nozzle of the powder feeding channel and an outlet of the nozzle channel are positioned in the same plane; the lower extreme of nozzle passageway and the relative one side of powder feeding passageway are equipped with scrapes scribbles the piece, scrape the bottom of scribbling the piece and the export parallel and level of nozzle passageway, utilize laser beam device to combine electromagnetic heating coil and ultrasonic oscillator, can utilize molten state molten metal to mix with coating material and substrate surface melting structure part and fuse again after remelting the substrate surface, directly fuse the metal and the coating granule of molten state into the molten bath, can eliminate defects such as gas pocket in the coating, mix with and microcrack, improve the quality and the life of coating effectively, and simple structure, convenient operation, the cost is lower.
Description
Technical Field
The invention belongs to the field of coating preparation, and particularly relates to a thermal-ultrasonic blade coating device and a blade coating method.
Background
Thermal barrier coating particle Systems (TBCs) generally refer to ceramic coatings deposited on metal surfaces with good Thermal insulation. The main function of the device is to reduce the temperature of the substrate of the parts working in high temperature environment, so that the parts are prevented from being oxidized, corroded or abraded by high temperature. In the last 50 years, in order to improve the high-temperature oxidation resistance and corrosion resistance of gas turbine blades and rocket engines, NASA-Lewis research center of the United states proposed that ceramic coatings with heat insulation capability be deposited on the surfaces of parts working under high-temperature working conditions, and the concept of TBCs was firstly proposed. The basic principle is based on the fact that ceramic coatings have high melting points and low thermal conductivity, thus making ceramic thermal barrier coatings a very good high temperature insulation material, which can insulate high temperature components of jet engines and gas turbines from high temperature combustion gases and protect turbine engine blades or other hot end components from erosion and corrosion by high temperature combustion gases. The power and thermal efficiency of aircraft engines are greatly improved by the application of TBCs. At present, most of ceramic materials of the thermal barrier coating are metal oxides, because the heat conduction of the metal oxide ceramics is mainly based on phonon conduction and photon conduction mechanisms, the heat conductivity is low, and the coating has good high-temperature stability in an oxygen-rich environment.
The common preparation processes of the thermal barrier coating mainly comprise methods such as electron beam physical vapor deposition, plasma spraying, plasma enhanced chemical vapor deposition, laser remelting and the like. The electron beam physical vapor deposition has high deposition efficiency and simple operation, but oxygen atoms are easy to diffuse to reach the bonding layer at high temperature, the ceramic layer is easy to peel off due to volume expansion caused by oxidation of the bonding layer, and the resistance of the layered structure to cold and heat cycles is also low. The plasma spraying has high power and high energy, the maximum energy can reach more than 200Kw, the mechanical structure is simpler, the arc striking is easier, the combustion is stable, but the defects are that the mechanical structure and the arc striking are more complicated, the electrode is easy to corrode, and the stability is poorer; the plasma enhanced chemical vapor deposition (PE-CVD) method has relatively high deposition rate (more than 250 mu m/h), and has the defects of large equipment investment, high cost, high requirement on the purity of gas, severe noise, strong light radiation, harmful gas, metal vapor dust and the like generated in the coating process, harm to human bodies, difficulty in coating the inner surface of the aperture and the like.
Disclosure of Invention
The invention aims to provide a thermal-ultrasonic blade coating device and a blade coating method, which are used for overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a thermal-ultrasonic scraping device comprises a scraping nozzle, a nozzle channel is arranged in the middle of the scraping nozzle, an electromagnetic heating coil and an ultrasonic oscillator are sleeved on the outer ring of the scraping nozzle, a powder feeding pipe communicated with the nozzle channel is arranged at the upper end of the scraping nozzle, a powder feeding channel is arranged on one side of the lower end of the nozzle channel, and a nozzle of the powder feeding channel and an outlet of the nozzle channel are positioned in the same plane; the lower end of the nozzle channel is provided with a scraping and coating block on one side opposite to the powder feeding channel, the bottom of the scraping and coating block is flush with the outlet of the nozzle channel, and a laser beam device is arranged on one side of the scraping and coating block.
Furthermore, the upper end of the scraping nozzle is provided with a conical cavity, and the powder feeding pipe is arranged on one side of the conical cavity and communicated with the side wall of the conical cavity.
Furthermore, one side of the scraping and coating block is provided with an air supply channel, and the air supply channel and the laser beam device are positioned on the same side of the scraping and coating block.
Furthermore, a positioning groove is formed in one side of the nozzle channel, and the scraping coating block is clamped in the positioning groove.
Furthermore, the air supply channel is arranged on the scraping and coating block, and an outlet of the air supply channel is positioned on the bottom surface of the scraping and coating block.
Furthermore, the ultrasonic oscillation piece is connected with an ultrasonic energy conversion device, the ultrasonic energy conversion device is connected with an ultrasonic generator, and the frequency of the ultrasonic generator is 6-8 MHz.
Furthermore, one side of the scraping and coating block is a wedge-shaped surface, and the laser beam device is arranged on one side of the wedge-shaped surface of the scraping and coating block.
Furthermore, the bottom of the nozzle channel, the air feeding channel and the powder feeding channel are positioned in the same plane, and the air outlet of the air feeding channel is larger than the outlet of the nozzle channel.
A method of thermal barrier coating a surface of a substrate comprising the steps of:
s1, selecting metal powder consistent with the base material to be coated, and filling the selected metal powder into the blade coating nozzle;
s2, adjusting the bottom of the nozzle channel, the air feed channel and the powder feed channel to be positioned in the same plane;
and S3, remelting the surface of the base material to be coated by utilizing the laser beam to form a molten pool, simultaneously heating the metal powder in the adjusting nozzle to be molten, simultaneously introducing coating particles through the powder feeding channel, adjusting the bottom of the nozzle to be attached to the surface of the base material to be coated to move, coating, melting and cooling the molten area of the laser beam to form the coating.
Furthermore, the speed of the molten metal in the nozzle entering the molten pool is 2-20 g/min, and the flow rate of the inert gas in the gas supply channel is 10-30L/min.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a thermal-ultrasonic blade coating device, which utilizes a blade coating nozzle structure with a nozzle channel arranged in the middle, wherein an electromagnetic heating coil and an ultrasonic oscillator are sleeved on the outer ring of the blade coating nozzle; the lower extreme of nozzle passageway and the relative one side of powder feeding passageway are equipped with scrapes scribbles the piece, scrape the bottom of scribbling the piece and the export parallel and level of nozzle passageway, one side of scraping scribbling the piece is equipped with the laser beam device, utilize laser beam device to combine electromagnetic heating coil and ultrasonic oscillator, can utilize molten state metal liquid to mix with coating material and substrate surface melting structure part to fuse again after remelting substrate surface, directly fuse the metal and the coating granule of molten state into the molten bath, can eliminate defects such as gas pocket, inclusion and microcrack in the coating, improve the quality and the life of coating effectively, and simple structure, convenient operation, the cost is lower.
Further, the upper end of knife coating nozzle is equipped with the toper chamber, send the powder pipe to set up in one side in toper chamber, with the lateral wall intercommunication in toper chamber, prevent that the metal particle from because of sending the delivery pressure of powder pipe and spattering, utilize the metal particle realization upper strata of toper intracavity sealed, can ensure electromagnetic heating material's closely knit degree simultaneously.
Furthermore, one side of the scraping and coating block is provided with an air supply channel, the air supply channel and the laser beam device are positioned on the same side of the scraping and coating block, and the molten metal is isolated from air by using protective gas, so that the thermal barrier coating is effectively prevented from being oxidized.
Furthermore, one side of the nozzle channel is provided with a positioning groove, and the scraping coating block is clamped in the positioning groove, so that the nozzle channel is convenient to fixedly install and simple in structure.
Furthermore, the laser beam device is arranged on one side of the wedge-shaped surface of the scraping and coating block, so that the melting efficiency is improved, the rapid cooling is prevented, and the fusion degree of the molten metal and the base material molten pool is improved.
The invention relates to a method for thermal barrier coating on the surface of a base material, which melts the surface of the base material through laser beams to form a molten pool on the surface of the base material, and then melts molten metal and coating particles into the molten pool, thereby effectively eliminating the defects of air holes, inclusion, microcracks and the like in the coating, effectively improving the quality of the coating and prolonging the service life of the coating.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the ultrasonic powder coating device comprises a conical cavity 1, a powder feeding pipe 2, an electromagnetic heating coil 3, an ultrasonic oscillator 4, an ultrasonic ring energy device 5, a nozzle channel 6, a powder feeding channel 7, a nozzle 8, a blade coating nozzle 9, a blade coating block 10, an air feeding channel 11, a laser beam device 12, an ultrasonic generator 13, a coating 14, a base material 15 and a molten pool 16.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the thermal-ultrasonic blade coating device of the present invention comprises a blade coating nozzle 9, a nozzle channel 6 is arranged in the middle of the blade coating nozzle 9, an electromagnetic heating coil 3 and an ultrasonic oscillator are sleeved on the outer ring of the blade coating nozzle 9, a powder feeding pipe 2 communicated with the nozzle channel 6 is arranged at the upper end of the blade coating nozzle, a powder feeding channel 7 is arranged at one side of the lower end of the nozzle channel 6, and a nozzle 8 of the powder feeding channel 7 and an outlet of the nozzle channel 6 are located in the same plane; the lower end of the nozzle channel 6 is provided with a scraping block 10 at one side opposite to the powder feeding channel 7, the bottom of the scraping block 10 is flush with the outlet of the nozzle channel 6, and a laser beam device 12 and an air feeding channel 11 are arranged at one side of the scraping block 10. The laser generates laser beams, the laser beams irradiate the surface of the substrate to form a molten pool on the surface of the substrate, then the metal in a molten state and coating particles are directly melted into the molten pool, the defects of air holes, impurities, microcracks and the like in the coating can be eliminated, the metal in the molten state is isolated from the air by the protective gas, and therefore the thermal barrier coating is effectively prevented from being oxidized, the quality and the service life of the coating are effectively improved, and the laser device is simple in structure, convenient to operate and low in cost.
Specifically, the upper end of the scraping and coating nozzle is provided with a conical cavity 1 for storing a material to be molded, and the material to be molded is consistent with a base material to be sprayed; send powder pipe 2 to set up in one side of toper chamber 1, with the lateral wall intercommunication in toper chamber 1 for the transported material in-process prevents that the metal particle from because of sending powder pipe 2's delivery pressure and splashing, utilizes the metal particle in the toper chamber 1 to realize the upper strata and seals, can ensure electromagnetic heating material's closely knit degree simultaneously, prevents in gaseous sneaking into nozzle passage 6, thereby has improved the precision that the spraying was printed.
And filling metal particles consistent with the base material 15 into the conical cavity 1 through the powder feeding pipe 2, wherein the particle diameter is 50-200 mu m.
As shown in fig. 1, a positioning groove is formed in one side of the nozzle channel 6, the scraping block 10 is clamped in the positioning groove and fixed on the spraying fixture together with the nozzle channel 6 to realize synchronous movement, and the electromagnetic heating coil 3 is arranged on the outer ring of the nozzle channel 6 and used for heating metal particles in the nozzle channel 6; the ultrasonic oscillation piece 4 is connected with ultrasonic transduction device 5, and ultrasonic transduction device 5 is connected with ultrasonic generator 13, and ultrasonic generator 13 frequency is 6 ~ 8MHz, and ultrasonic generator 13 converts the power frequency alternating current into ultrasonic frequency oscillation to supply to the energy of ultrasonic oscillation piece 4 reciprocating vibration and atomizing metal melt, ultrasonic transduction device 5 is sandwich type piezoceramics transducer. One side of the scraping and coating block 10 is a wedge-shaped surface, and the laser beam device 12 is arranged on one side of the wedge-shaped surface of the scraping and coating block 10, so that the melting efficiency is improved, the rapid cooling is prevented, and the molten metal in the nozzle channel 6 is perfectly fused with the base material molten pool.
The gas channel 11 is arranged on the scraping block 10, and the outlet of the gas channel 11 is positioned on the bottom surface of the scraping block 10, so that the utilization rate of the protective gas is improved; the whole equipment is prevented from being arranged in the inert gas atmosphere.
The left side and the right side of the lower part of the nozzle channel 6 are respectively provided with an air feed channel 11 and a powder feed channel 7, the bottom of the nozzle channel 6, the air feed channel 11 and the powder feed channel 7 are positioned in the same plane, the air outlet of the air feed channel 11 is larger than the outlet of the nozzle channel 6, the air feed channel 11 is filled with inert protective gas, and the inert protective gas is N2One of Ar and He, a metal powder material consistent with the coating 14 is introduced into the powder feeding channel 7, the diameter of powder particles is 15-80 mu m, and the chemical composition of the powder is 6-9 Wt.%Y2O3Partially stabilized ZrO2The grain size of the powder is nano-scale coating particles; the laser beam 12 is arranged in front of the moving direction of the blade coating block 10, the surface of the base material 15 is melted to form a molten pool, and the gas feeding channel 11 positioned on one side of the nozzle channel 6 feeds protective gas, so that molten metal at the outlet of the nozzle channel 6 can be completely covered, oxidation is prevented, and coating preparation is facilitated. Specifically, the roughness of the bottom surface of the scraping and coating block 10 is Ra0.1-0.3; the diameter of the nozzle channel 6 is 50-200 mu m, and the diameters of the powder feeding channel 1111 and the powder feeding channel are 0.1-1 mm; the scraping and coating block 10 is a cubic high-temperature resistant ceramic material.
Based on the thermal-ultrasonic blade coating device, the preparation method for the thermal barrier coating of the base material comprises the following steps:
s1, fixing the scraping block 10 and the nozzle channel 6, and enabling the bottom of the scraping block 10 and the nozzle channel 6 to be attached to the surface of the base material 15;
s2, filling metal particles which are consistent with the material of the base material 15 into a conical cavity 1 through a powder feeding pipe 2, enabling the metal particles in the conical cavity 1 to enter a nozzle channel 6 under the action of gravity, heating the metal particles by an electromagnetic heating coil 3 to form molten metal, enabling the molten metal to act on an ultrasonic oscillation sheet 4 through an ultrasonic energy conversion device 5 to generate an ultrasonic cavitation effect, atomizing the molten metal, and forming metal atomized particles with the diameter of 2-5 microns under the action of inert gas in an air feeding channel 11;
and S3, generating a laser beam by a laser beam device, wherein the direction of the laser beam is downward along the wedge-shaped surface on the scraping block 10, moving the laser beam and the scraping block 10 along the scraping direction, irradiating the laser beam on the surface of the base material 15 to remelt the surface of the base material 15 to form a molten pool 16, feeding coating particles into the powder feeding channel 7, enabling the coating particles and the molten metal flowing out of the nozzle channel 6 to fall into the molten pool 16, and cooling the molten pool 16 to form the coating 14.
And S4, grinding and polishing the obtained coating 14 to obtain the thermal barrier coating.
The inert gas is nitrogen, argon or helium.
The power of the laser beam emitted by the laser beam device 12 is 200-1200W;
the speed of moving the laser beam and the scraping block 10 along the scraping direction is 4-20 m/s.
The speed of the molten metal entering the molten pool 16 is 2-20 g/min.
The flow rate of the inert gas is 10-30L/min.
The frequency of the ultrasonic generator 13 is 6-8 MHz.
The coating particles fall along the powder feeding channel 7 under the driving of gas and the action of gravity at a speed of 10-60 g/min.
The thickness of the coating 14 obtained in the step 3) is 0.05-1.5 mm larger than that of the thermal barrier coating obtained in the step 4).
The thermal barrier coating prepared by the invention is made of YSZ ceramic powder with a nano structure, the diameter of powder particles is 15-80 mu m, and the chemical components of the powder are 6-9 Wt.%Y2O3Partially stabilized ZrO2The grain size of the powder is nano-scale coating particles.
When the thermal barrier coating is prepared, the laser is used for generating the laser beam, the laser beam irradiates the surface of the base material to form a molten pool, then the molten metal and coating particles are directly melted into the molten pool, the defects of air holes, inclusion, microcracks and the like in the coating can be eliminated, and the molten metal is isolated from the air by the protective gas, so that the thermal barrier coating is effectively prevented from being oxidized, the quality of the coating is effectively improved, the service life of the coating is prolonged, the structure is simple, the operation is convenient, and the cost is low.
Claims (10)
1. The thermal-ultrasonic blade coating device is characterized by comprising a blade coating nozzle (9), a nozzle channel (6) is arranged in the middle of the blade coating nozzle (9), an electromagnetic heating coil 3 and an ultrasonic oscillator are sleeved on the outer ring of the blade coating nozzle (9), a powder feeding pipe (2) communicated with the nozzle channel (6) is arranged at the upper end of the blade coating nozzle, a powder feeding channel (7) is arranged on one side of the lower end of the nozzle channel (6), and a nozzle (8) of the powder feeding channel (7) and an outlet of the nozzle channel (6) are positioned in the same plane; one side of the lower end of the nozzle channel (6) opposite to the powder feeding channel (7) is provided with a scraping and coating block (10), the bottom of the scraping and coating block (10) is flush with the outlet of the nozzle channel (6), and one side of the scraping and coating block (10) is provided with a laser beam device (12).
2. A thermo-ultrasonic blade coating apparatus according to claim 1, wherein the upper end of the blade coating nozzle is provided with a conical cavity (1), and the powder feeding pipe (2) is arranged at one side of the conical cavity (1) and is communicated with the side wall of the conical cavity (1).
3. A thermo-ultrasonic blade coating device according to claim 1, characterised in that the blade (10) is provided with a gas feed channel (11) on one side, the gas feed channel (11) being located on the same side of the blade (10) as the laser beam device (12).
4. A thermo-ultrasonic blade coating apparatus according to claim 1, characterised in that one side of the nozzle channel (6) is provided with a positioning slot in which the blade (10) is snapped.
5. A thermo-ultrasonic blade coating device according to claim 3, characterised in that the air supply channel (11) opens onto the blade (10), the outlet of the air supply channel (11) being located at the bottom side of the blade (10).
6. The thermo-ultrasonic blade coating device according to claim 1, wherein the ultrasonic oscillating plate (4) is connected with an ultrasonic transducer device (5), the ultrasonic transducer device (5) is connected with an ultrasonic generator (13), and the frequency of the ultrasonic generator (13) is 6-8 MHz.
7. A thermo-ultrasonic blade coating apparatus according to claim 1, wherein the blade (10) is wedge-shaped on one side and the laser beam means (12) is arranged on the wedge-shaped side of the blade (10).
8. A thermo-ultrasonic blade coating apparatus according to claim 3, wherein the bottom of the nozzle channel (6) and the air supply channel (11) and the powder supply channel (7) are located in the same plane, and the air outlet of the air supply channel (11) is larger than the outlet of the nozzle channel (6).
9. A method for blade coating of thermal barrier coating on the surface of a substrate based on a thermo-ultrasonic blade coating apparatus as defined in claim 3, comprising the steps of:
s1, selecting metal powder consistent with the base material to be coated, and filling the selected metal powder into the blade coating nozzle;
s2, adjusting the bottom of the nozzle channel, the air feed channel and the powder feed channel to be positioned in the same plane;
and S3, remelting the surface of the base material to be coated by utilizing the laser beam to form a molten pool, simultaneously heating the metal powder in the adjusting nozzle to be molten, simultaneously introducing coating particles through the powder feeding channel, adjusting the bottom of the nozzle to be attached to the surface of the base material to be coated to move, coating, melting and cooling the molten area of the laser beam to form the coating.
10. The method for blade coating of thermal barrier coating on the surface of the substrate of the thermal-ultrasonic blade coating device according to claim 1, wherein the speed of molten metal in a nozzle entering a molten pool is 2-20 g/min, and the flow rate of inert gas in a gas supply channel is 10-30L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155932.XA CN113957430A (en) | 2021-09-29 | 2021-09-29 | Thermal-ultrasonic blade coating device and blade coating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155932.XA CN113957430A (en) | 2021-09-29 | 2021-09-29 | Thermal-ultrasonic blade coating device and blade coating method |
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| Publication Number | Publication Date |
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| CN113957430A true CN113957430A (en) | 2022-01-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011052118A1 (en) * | 2011-07-25 | 2013-01-31 | Eckart Gmbh | Method for applying a coating to a substrate, coating and use of particles |
| CN104043832A (en) * | 2014-06-18 | 2014-09-17 | 西安交通大学 | Device for controlling metal additive molding surface quality |
| CN104099610A (en) * | 2014-07-10 | 2014-10-15 | 西安交通大学 | Coating device and preparation method of thermal failure coating layer based on coating device |
| CN105252010A (en) * | 2015-10-27 | 2016-01-20 | 上海航天精密机械研究所 | Metal atomization nozzle based on heat-magnesium-ultrasound effect |
| EP3766611A2 (en) * | 2019-07-16 | 2021-01-20 | 3d Lab SP. Z O.O. | Method and device for producing heavy metal powders by ultrasonic atomization |
-
2021
- 2021-09-29 CN CN202111155932.XA patent/CN113957430A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011052118A1 (en) * | 2011-07-25 | 2013-01-31 | Eckart Gmbh | Method for applying a coating to a substrate, coating and use of particles |
| CN104043832A (en) * | 2014-06-18 | 2014-09-17 | 西安交通大学 | Device for controlling metal additive molding surface quality |
| CN104099610A (en) * | 2014-07-10 | 2014-10-15 | 西安交通大学 | Coating device and preparation method of thermal failure coating layer based on coating device |
| CN105252010A (en) * | 2015-10-27 | 2016-01-20 | 上海航天精密机械研究所 | Metal atomization nozzle based on heat-magnesium-ultrasound effect |
| EP3766611A2 (en) * | 2019-07-16 | 2021-01-20 | 3d Lab SP. Z O.O. | Method and device for producing heavy metal powders by ultrasonic atomization |
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