CN211112223U - Laser and electric co-heating thermal spraying device - Google Patents
Laser and electric co-heating thermal spraying device Download PDFInfo
- Publication number
- CN211112223U CN211112223U CN201922106094.1U CN201922106094U CN211112223U CN 211112223 U CN211112223 U CN 211112223U CN 201922106094 U CN201922106094 U CN 201922106094U CN 211112223 U CN211112223 U CN 211112223U
- Authority
- CN
- China
- Prior art keywords
- laser
- central inner
- inner cylinder
- metal powder
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Coating By Spraying Or Casting (AREA)
- Laser Beam Processing (AREA)
Abstract
A laser and electric co-heating thermal spraying device comprises a laser light emitting system, a cooling device, a light barrier, a resistance ring preheating device and a spray pipe, wherein the laser light emitting system comprises an installation cylinder and a laser beam, and a light outlet of the laser light emitting system is provided with a light transmitting mirror; a spray pipe for conveying metal powder is arranged in the light barrier and is communicated with the central inner cylinder; the resistance ring preheating device is arranged around the lower end of the laser light emitting system to preheat metal powder. The utility model discloses preheat high-pressure metal powder electricity, further improve the metal powder temperature after laser irradiation again, make the powder melt at the exit end to drip on the work piece, cool off, solidify. The utility model discloses a hot spraying technology and device are efficient, and spraying surface appearance is good.
Description
Technical Field
The utility model relates to a laser hot spraying equipment.
Background
Laser thermal spraying is to focus a laser beam emitted from a laser near a spray gun nozzle, spraying powder from the spray gun nozzle by compressed gas, heating and melting by the laser beam, atomizing and accelerating the molten particles by the compressed gas, and spraying the atomized and accelerated molten particles onto the surface of a base material to form a coating. The thermal spraying coating has excellent performances of wear resistance, corrosion resistance, high temperature resistance, heat insulation and the like, can repair the size reduction of parts caused by wear, corrosion or processing out-of-tolerance, and is widely applied to the fields of aerospace, mechanical manufacturing, petrochemical industry and the like.
The laser thermal spraying technology has the following problems that the coating material has poor thermal shock resistance and poor toughness, and cracks are easily generated when the coating material is rapidly heated and cooled due to overlarge laser power; rapidly heating to expand the gas in the coating to form defects such as air holes and cracks; the coating material has poor compatibility with the base material, and the coating material with low thermal conductivity is easy to peel off due to local heating. The laser power is too low to reach the melting point of the coating material, and the aim of laser thermal spraying cannot be achieved.
Therefore, in order to realize low-power laser thermal spraying and effectively alleviate the generation and propagation of coating cracks, a thermal spraying method and device with laser and electric heating together are needed, the utility model provides a new rapid thermal spraying method and device for low-power laser thermal spraying
Disclosure of Invention
For solving low-power laser hot spraying and can not reach coating material melting point, coating material production crackle scheduling problem appears in high power laser hot spraying, the utility model provides a hot spraying device of laser and electric concurrent heating.
The utility model discloses a resistance circle preheating device preheats metal powder, carries out low-power laser spraying, obtains that the interface cohesion is strong, stand wear and tear, corrosion-resistant, high temperature resistance's spraying coating.
The utility model discloses a laser and electric co-heating thermal spraying device, including laser light-emitting system, laser light-emitting system includes installation section of thick bamboo 3 and central inner tube 1, and central inner tube 1 sets up in installation section of thick bamboo 3, and installation section of thick bamboo 3 sets up with central inner tube 1 is coaxial, and the axial lead of central inner tube 1 passes through laser beam 10, is equipped with cooling device 2 in the wall of installation section of thick bamboo 3, and the part that central inner tube 1 worn out installation section of thick bamboo 3 lower extreme installs baffle 4 of gyration body form, and baffle 4 is coaxial with central inner tube 1; the method is characterized in that: the lower end of the central inner cylinder 1 is in a cone shape, the tip of the cone is provided with a through hole, a laser beam 10 passes through the through hole, and a workpiece 5 to be processed is arranged below the through hole; a convex lens 6 is arranged in the central inner cylinder 1, and the focus of the convex lens 6 is positioned in the through hole; a spray pipe 8 for conveying metal powder is arranged in the baffle 4, and the spray pipe 8 is communicated with the central inner cylinder 1; the part of the central inner cylinder 1, which penetrates out of the lower end of the baffle 4, is provided with a resistance ring preheating device 7, and the resistance ring preheating device 7 surrounds the central inner cylinder 1.
Preferably, a plurality of spray pipes 8 are mounted on the baffle plate 4, and the spray pipes 8 are uniformly arranged in the circumferential direction of the baffle plate 4.
Preferably, the location where the nozzle 8 opens into the central inner barrel 1 is below the convex lens 6.
The utility model discloses preheat high-pressure metal powder electricity, further improve the metal powder temperature after laser irradiation again, make the powder melt at the exit end to drip on work piece 5, cool off, solidify.
The utility model has the advantages that: the low-power laser spraying can be carried out to obtain a spraying coating with strong interface binding force, wear resistance, corrosion resistance and high temperature resistance; the thermal spraying process and the device have high efficiency and good spraying surface appearance.
Drawings
The invention will be further described with reference to the accompanying drawings, which are included to provide a further understanding of the invention and constitute a part of this specification, together with the embodiments of the invention serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a laser and electric co-heating thermal spraying device, which comprises a laser light emitting system, wherein the laser light emitting system comprises an installation cylinder 3 and a central inner cylinder 1, the central inner cylinder 1 is arranged in the installation cylinder 3, the installation cylinder 3 and the central inner cylinder 1 are coaxially arranged, the axial lead of the central inner cylinder 1 passes through a laser beam 10, a cooling device 2 is arranged in the wall surface of the installation cylinder 3, the part of the central inner cylinder 1, which penetrates out of the lower end of the installation cylinder 3, is provided with a baffle 4 in the shape of a rotator, and the baffle 4 is coaxial with the central inner cylinder 1; the method is characterized in that: the lower end of the central inner cylinder 1 is in a cone shape, the tip of the cone is provided with a through hole, a laser beam 10 passes through the through hole, and a workpiece 5 to be processed is arranged below the through hole; a convex lens 6 is arranged in the central inner cylinder 1, and the focus of the convex lens 6 is positioned in the through hole; a spray pipe 8 for conveying metal powder is arranged in the baffle 4, and the spray pipe 8 is communicated with the central inner cylinder 1; the part of the central inner cylinder 1, which penetrates out of the lower end of the baffle 4, is provided with a resistance ring preheating device 7, and the resistance ring preheating device 7 is annular and surrounds the central inner cylinder 1.
A plurality of spray pipes 8 are arranged on the baffle 4, and the spray pipes 8 are uniformly arranged in the circumferential direction of the baffle 4. In actual use, the powder feeder connected to the nozzle 8 is connected to a high pressure gas source to blow metal powder into the central inner barrel 1. The nozzle 8 is connected with the baffle 4 through the nozzle according to the bolt 9.
The location where the nozzle 8 opens into the central inner barrel 1 is below the convex lens 6.
The resistance ring preheating device 7 surrounds the periphery of the lower end of the laser light emitting system, powder is electrically preheated, the temperature of metal powder particles reaches 0.2-0.7 times of the melting point temperature of the metal powder particles, the metal powder particles are not melted, the temperature of the metal powder particles is further increased to reach the melting temperature of the metal powder particles under the action of laser, and the metal powder particles are melted at the outlet end and drop on the surface of a substrate.
Wherein, cooling device can cool off laser light-emitting system, protects the laser instrument
Wherein, resistance ring preheating device can heat different powders, and application scope is wide
The metal powder is heated by the resistance coil and the laser, then is melted above the substrate of the workpiece, and is dripped on the surface of the substrate of the workpiece.
The utility model discloses the use step of device is as follows:
(1) since the metal powder particles are small enough (about 35 μm), the temperature of the metal powder particles is considered uniform, and the light intensity of the laser beam is uniformly distributed, provided that there is no difference between the light-facing surface and the backlight surface of the metal powder particles.
(2) Setting the temperature of the resistance coil preheating device to be 0.2-0.7 times of the melting point temperature of the metal powder particles according to the temperature required by the melting of the particles, and then further increasing the temperature of the metal powder particles to reach the melting temperature after the metal powder particles are irradiated by low-power laser.
(3) And (3) polishing the surface of a substrate of the workpiece by using abrasive paper to remove rust and an oxide layer on the surface, cleaning by using absolute ethyl alcohol to remove grease and stains, ensuring that impurities cannot be mixed in the laser spraying process, and drying for later use.
(4) Drying the metal powder, and placing the metal powder in a powder feeder, wherein the speed range of metal powder particles is lower than the sound speed and is more than 60 m/s; the laser device comprises a light path system connected with a laser light emitting system and a cooling device, wherein the cooling device adopts a water cooling system, and the diameter of a laser spot is 10 mm.
(5) Connecting a resistance ring preheating device, and heating the metal powder to 0.2-0.7 times of the melting point temperature of the metal powder.
(6) And laser spraying is carried out by using a laser, and the powder particles heated by the resistance coil preheating device are focused by low-power laser and then heated, so that the temperature of the powder particles is further increased to reach the melting temperature and the melting temperature is dropped on the surface of the workpiece to form a spraying coating.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments but rather the scope of the invention is intended to cover all technical equivalents that may occur to those skilled in the art based on the inventive concept.
Claims (3)
1. The laser and electric co-heating thermal spraying device comprises a laser light emitting system, wherein the laser light emitting system comprises an installation cylinder (3) and a central inner cylinder (1), the central inner cylinder (1) is arranged in the installation cylinder (3), the installation cylinder (3) and the central inner cylinder (1) are coaxially arranged, the axial lead of the central inner cylinder (1) passes through a laser beam (10), a cooling device (2) is arranged in the wall surface of the installation cylinder (3), a rotary baffle (4) is arranged at the part of the central inner cylinder (1) penetrating out of the lower end of the installation cylinder (3), and the baffle (4) is coaxial with the central inner cylinder (1); the method is characterized in that: the lower end of the central inner cylinder (1) is in a cone shape, the tip of the cone is provided with a through hole, a laser beam (10) penetrates through the through hole, and a workpiece (5) to be processed is arranged below the through hole; a convex lens (6) is arranged in the central inner cylinder (1), and the focus of the convex lens (6) is positioned in the through hole; a spray pipe (8) for conveying metal powder is arranged in the baffle (4), and the spray pipe (8) is communicated with the central inner cylinder (1); the part of the central inner cylinder (1) penetrating out of the lower end of the baffle (4) is provided with a resistance ring pre-heating device (7), and the resistance ring pre-heating device (7) surrounds the central inner cylinder (1).
2. A laser and electrical co-heated thermal spray apparatus as claimed in claim 1, wherein: a plurality of spray pipes (8) are arranged on the baffle plate (4), and the spray pipes (8) are uniformly arranged in the circumferential direction of the baffle plate (4).
3. A laser and electrical co-heated thermal spray apparatus as claimed in claim 1, wherein: the position of the spray pipe (8) which is led into the central inner cylinder (1) is arranged below the convex lens (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922106094.1U CN211112223U (en) | 2019-11-29 | 2019-11-29 | Laser and electric co-heating thermal spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922106094.1U CN211112223U (en) | 2019-11-29 | 2019-11-29 | Laser and electric co-heating thermal spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211112223U true CN211112223U (en) | 2020-07-28 |
Family
ID=71696640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922106094.1U Active CN211112223U (en) | 2019-11-29 | 2019-11-29 | Laser and electric co-heating thermal spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211112223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819984A (en) * | 2019-11-29 | 2020-02-21 | 浙江工业大学 | Laser and electric co-heating thermal spraying device |
-
2019
- 2019-11-29 CN CN201922106094.1U patent/CN211112223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819984A (en) * | 2019-11-29 | 2020-02-21 | 浙江工业大学 | Laser and electric co-heating thermal spraying device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5171125B2 (en) | Nozzle for cold spray and cold spray device using the nozzle for cold spray | |
| CN103374693B (en) | Nano thermal barrier coating on surface of high-temperature furnace roller and preparation method thereof | |
| CN104233162B (en) | Surface repair method of piston rod | |
| CN110983328A (en) | Laser composite cold spraying high-speed deposition method and cold spraying equipment | |
| CN211112223U (en) | Laser and electric co-heating thermal spraying device | |
| JP2014530981A (en) | piston | |
| CN111378965A (en) | Method for preparing graphite-enhanced antifriction heat-conducting and electric-conducting coating by supersonic laser deposition | |
| CN110923700A (en) | Steel surface coating, preparation method and device | |
| CN207362334U (en) | A kind of multifunctional coaxial powder feeding high-rate laser spray equipment | |
| CN105441935A (en) | Coaxial powder feeding laser cladding method and special processing device under vacuum condition | |
| CN111188036B (en) | Alternating magnetic field assisted laser remanufacturing method under inclined angle | |
| CN114250459A (en) | Method for supersonic laser deposition micro shot blasting and spraying device | |
| CN106399897A (en) | Method and device for preparing amorphous aluminum coating by means of laser thermal spraying | |
| CN111286584A (en) | System and method for laser nitriding metal surfaces | |
| CN213590831U (en) | Laser spraying spray gun capable of preparing coating with ultrahigh bonding strength | |
| CN111172531A (en) | Alternating magnetic field auxiliary laser remanufacturing device under inclination angle | |
| CN110819984A (en) | Laser and electric co-heating thermal spraying device | |
| CN206328448U (en) | A kind of thermal spraying apparatus | |
| CN107937904B (en) | Method and device for preparing aluminum coating by laser cold spraying | |
| CN104046983A (en) | Titanium alloy thin-wall blade laser-cladding low-stress local orientation cooling restoration method | |
| CN111286693A (en) | Microporous anode for cluster plasma spray gun and cluster plasma spraying method | |
| CN212476887U (en) | Detachable multi-shaft ultrahigh-speed laser cladding nozzle | |
| CN211311592U (en) | Laser rapid cladding device based on electromagnetic induction heating | |
| CN212128235U (en) | System for laser nitriding metal surfaces | |
| CN111893418B (en) | Method for improving high-temperature oxidation resistance of surface of nickel-based alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |