CN111482295A - Laser deposition spray head - Google Patents
Laser deposition spray head Download PDFInfo
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- CN111482295A CN111482295A CN202010469805.6A CN202010469805A CN111482295A CN 111482295 A CN111482295 A CN 111482295A CN 202010469805 A CN202010469805 A CN 202010469805A CN 111482295 A CN111482295 A CN 111482295A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
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Abstract
The invention discloses a laser deposition nozzle, which comprises a high-pressure airflow heater and a nozzle, wherein a valve pulling pipe is arranged in the center of the nozzle, the valve pulling pipe extends from the upper end surface of the nozzle to the lower end surface of the nozzle, the valve pulling pipe comprises a contraction section, a throat and an expansion section which are sequentially connected from top to bottom, a powder feeding pipe communicated with the throat is arranged on the nozzle, the powder feeding pipe extends to the outside of the nozzle, a light path system interface is arranged at the upper end of the nozzle, a laser channel is downwards arranged at the bottom of the light path system interface of the nozzle, the lower end of the laser channel extends to the lower end surface of the nozzle, and the axis of the laser channel is intersected with the axis of the valve; the high-pressure airflow heater is arranged at the upper end of the nozzle, and a high-pressure airflow outlet of the high-pressure airflow heater is communicated with an inlet of the contraction section of the pull valve pipe. The laser deposition nozzle can integrate a laser optical path system, a powder feeding pipeline and a powder outlet nozzle, simplifies the whole device of laser deposition, and improves the powder utilization rate and the coating quality.
Description
Technical Field
The invention belongs to the technical field of laser deposition, and particularly relates to a laser deposition nozzle.
Background
The laser deposition technology combines laser irradiation heat energy and high-speed particle kinetic energy, the laser irradiation heat energy is from laser, the high-speed particle kinetic energy is from a high-pressure airflow driving force, and the high-speed particles instantaneously adjust and improve the mechanical property and the collision deposition state of a material under the irradiation of the laser, so that the service performance of a coating is improved while the solid deposition characteristic is maintained.
In the implementation process of the laser deposition technology, the laser generating device is a set of equipment and comprises a laser, an optical fiber, an optical path system and a water cooling machine, wherein the optical path system is fixed on a robot arm to move laser; the powder feeding device is a set of equipment and comprises a powder feeding pipeline, a powder feeder, a powder splitter and a powder discharging nozzle, and other devices are connected to the powder discharging nozzle in a gathering manner to achieve the powder feeding effect; the high-pressure air flow device is one set of equipment and comprises a high-pressure air bottle, a high-pressure air flow pipeline and a pressure-bearing device, so that the laser deposition integral device is too messy and bloated, the number of connecting equipment is large, the number of powder feeding pipes, air feeding pipes and water cooling pipes is large, the device is combined outside multiple simple devices, the integration degree of the integral device is low, the structural compactness is low, the working efficiency is low, and the powder utilization rate is not high.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a laser deposition nozzle which can integrate a laser optical path system, a powder feeding pipeline and a powder outlet nozzle together, simplify the whole device of laser deposition and improve the powder utilization rate and the coating quality.
The technical scheme adopted by the invention is as follows:
a laser deposition nozzle comprises a high-pressure airflow heater and a nozzle, wherein a valve pulling pipe is arranged in the center of the nozzle, the valve pulling pipe extends from the upper end face of the nozzle to the lower end face of the nozzle, the valve pulling pipe comprises a contraction section, a throat and an expansion section which are sequentially connected from top to bottom, a powder feeding pipe communicated with the throat is arranged on the nozzle, the powder feeding pipe extends to the outside of the nozzle, a light path system interface is arranged at the upper end of the nozzle, a laser channel is downwards arranged at the bottom of the light path system interface of the nozzle, the lower end of the laser channel extends to the lower end face of the nozzle, and the axis of the laser channel is intersected with the axis of the valve pulling pipe; the high-pressure airflow heater is arranged at the upper end of the nozzle, and a high-pressure airflow outlet of the high-pressure airflow heater is communicated with an inlet of the contraction section of the pull valve pipe.
Preferably, the nozzle is symmetrically provided with a plurality of nozzles at the interface of the optical path system and laser channels corresponding to the interface of the optical path system around the valve pulling pipe, and the axes of all the laser channels intersect with the axis of the valve pulling pipe at one point.
Preferably, a water cooling structure is provided in the nozzle, the water cooling structure having an inlet and an outlet.
Preferably, the water-cooling structure includes water-cooling ring chamber pipe and water-cooling straight tube, and the water-cooling ring chamber pipe is around drawing valve pipe around, and the water-cooling straight tube includes into water-cooling straight tube and play water-cooling straight tube, and the one end and the water-cooling ring chamber intercommunication of water-cooling straight tube and play water-cooling straight tube of intaking, the other end of intaking water-cooling straight tube and play water-cooling straight tube extend to the outside of nozzle, and the intercommunication point of intaking water-cooling straight tube and water-cooling ring chamber and the intercommunication point symmetry of play water-cooling straight tube and water-cooling ring.
Preferably, the water-cooling annular tube cavity comprises an upper water-cooling annular tube cavity and a lower water-cooling annular tube cavity, the upper water-cooling annular tube cavity is located around the throat of the pull valve tube, the lower water-cooling annular tube cavity is located at the position, close to the lower end face, of the lower end of the nozzle, the lower water-cooling annular tube cavity is located on the periphery of the expansion section of the pull valve tube and the periphery of the laser channel, and the upper water-cooling annular tube cavity and the lower water-cooling annular tube cavity are both connected with a water inlet water-.
Preferably, the axis of the powder feeding pipe is perpendicular to the axis of the valve pulling pipe.
Preferably, a heating cavity is arranged in the high-pressure airflow heater, a heating element is arranged in the heating cavity, the upper end of the heating cavity is connected with a high-pressure airflow interface, and the lower end of the heating cavity is communicated with an inlet of the contraction section of the pull valve pipe.
Preferably, the high-pressure airflow heater is connected with a temperature detection and control system, the temperature detection and control system comprises a temperature measurement pipe and a controller, the temperature measurement pipe is arranged in the heating cavity, and the temperature measurement pipe and the heating element are both connected with the controller.
The invention has the following beneficial effects:
the center of the nozzle of the laser deposition nozzle is provided with the valve pulling pipe, the valve pulling pipe extends from the upper end face of the nozzle to the lower end face of the nozzle, the valve pulling pipe comprises a contraction section, a throat and an expansion section which are sequentially connected from top to bottom, the high-pressure airflow can be further accelerated by utilizing the valve pulling pipe, and the nozzle is provided with the powder feeding pipe communicated with the throat, so that the powder can be accelerated by the high-pressure airflow at the throat of the valve pulling pipe and is fed to the lower end face of the nozzle; the nozzle of the laser deposition nozzle is provided with a light path system interface, a laser light path system can be connected with the laser deposition nozzle through the light path system interface, the nozzle is downwards provided with a laser channel at the bottom of the light path system interface, the lower end of the laser channel extends to the lower end face of the nozzle, the axis of the laser channel is intersected with the axis of the valve pulling pipe, and the structure can enable laser to be directly irradiated below the nozzle and can be contacted with accelerated powder to jointly perform deposition; according to the invention, the high-pressure airflow heater is arranged, so that the high-pressure airflow can be heated before the valve tube is accelerated, the high-pressure airflow heated in the valve tube is mixed with the powder and heats the powder, the powder is easier to soften, the deposition is facilitated, and the quality of the coating can be improved. Compared with the existing equipment, the spray head provided by the invention can enable the contact distance between the powder and the laser beam to be smaller, the contact distance to be longer, the powder amount contacted with the laser beam to be increased, and the utilization rate of the powder to be higher.
Furthermore, a plurality of nozzles are symmetrically arranged on the nozzles around the valve pulling pipe, and the nozzles are arranged at the interface of the optical path system and the laser channel corresponding to the interface of the optical path system, so that the efficiency of laser deposition and the utilization rate of powder can be further improved.
Furthermore, a water cooling structure is arranged in the nozzle and is provided with an inlet and an outlet, so that the laser nozzle can be cooled by circulating water, and redundant energy generated by powder and laser can be conducted out, thereby being beneficial to prolonging the service life of the nozzle.
Furthermore, the upper water-cooling annular pipe cavity is positioned around the throat of the valve pulling pipe, and the lower water-cooling annular pipe cavity is positioned at the position, close to the lower end face, of the lower end of the nozzle.
Drawings
FIG. 1 is a schematic longitudinal sectional view of a laser deposition nozzle according to the present invention;
FIG. 2 is a schematic structural diagram of a water cooling system of the laser deposition nozzle according to an embodiment of the present invention;
FIG. 3 is a schematic longitudinal cross-sectional view of a laser deposition showerhead nozzle in an embodiment of the present invention;
FIG. 4 is a perspective view of the laser deposition nozzle and the optical path system according to the present invention.
In the figure: 1 high-pressure airflow interface, 2 temperature detecting and controlling system, 3 heating element, 4 optical path system interface, 5 laser channel, 6 temperature measuring tube, 7 valve pulling tube, 8 upper water-cooling straight tube, 9 upper water-cooling annular tube cavity, 10 lower water-cooling straight tube, 11 lower water-cooling annular tube cavity, 12 optical fiber interface, 13 optical path system, 14 protective lens, 15 powder feeding tube.
Detailed Description
In order that the above objects, features and advantages of the present invention will become more apparent, a detailed description of the embodiments of the present invention will be given below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the laser deposition nozzle of the invention comprises a high-pressure air flow heater and a nozzle, wherein a valve pulling pipe 7 is arranged in the center of the nozzle, the valve pulling pipe 7 extends from the upper end surface of the nozzle to the lower end surface of the nozzle, the valve pulling pipe 7 comprises a contraction section, a throat and an expansion section which are sequentially connected from top to bottom, a powder feeding pipe 15 communicated with the throat is arranged on the nozzle, the powder feeding pipe 15 extends to the outside of the nozzle, a light path system interface 4 is arranged at the upper end of the nozzle, a laser channel 5 is arranged at the bottom of the light path system interface 4 downwards, the lower end of the laser channel 5 extends to the lower end surface of the nozzle, and the axis of the laser channel 5 is intersected with the axis of the valve pulling; the high-pressure airflow heater is arranged at the upper end of the nozzle, and a high-pressure airflow outlet of the high-pressure airflow heater is communicated with an inlet of a contraction section of the valve pulling pipe 7.
Referring to fig. 1 and 2, as a preferred embodiment of the present invention, a plurality of nozzles are symmetrically arranged on the nozzle around a valve pulling pipe 7 at an optical path system interface 4 and laser channels 5 corresponding to the optical path system interface 4, and the axes of all the laser channels 5 intersect with the axis of the valve pulling pipe 7 at a point.
As a preferred embodiment of the invention, a water-cooled structure is provided in the nozzle, the water-cooled structure having an inlet and an outlet.
Referring to fig. 1 to 3, as a preferred embodiment of the present invention, the water cooling structure includes a water cooling annular tube cavity and a water cooling straight tube, the water cooling annular tube cavity surrounds the valve pulling tube 7, the water cooling straight tube includes a water inlet water cooling straight tube and a water outlet water cooling straight tube, one end of the water inlet water cooling straight tube and one end of the water outlet water cooling straight tube are communicated with the water cooling annular tube cavity, the other end of the water inlet water cooling straight tube and the other end of the water outlet water cooling straight tube extend to the outside of the nozzle, and the communication point of the water inlet water cooling straight tube and the water cooling annular tube cavity is symmetrical to the communication point.
Referring to fig. 1 to 3, the water-cooled annular tube cavity comprises an upper water-cooled annular tube cavity 9 and a lower water-cooled annular tube cavity 11, the upper water-cooled annular tube cavity 9 is located around the throat of the valve pulling tube 7, the lower water-cooled annular tube cavity 11 is located at the position, close to the lower end face, of the lower end of the nozzle, the lower water-cooled annular tube cavity 11 is located at the periphery of the expansion section of the valve pulling tube 7 and the laser channel 5, and the upper water-cooled annular tube cavity 9 and the lower water-cooled annular tube cavity 11 are both connected with a water inlet water-cooled straight tube and a water outlet water-.
Referring to fig. 3, the axis of the powder feeding tube 15 is perpendicular to the axis of the valve pulling tube 7 as a preferred embodiment of the present invention.
Referring to fig. 1, a heating cavity is arranged in the high-pressure airflow heater, a heating element 3 is arranged in the heating cavity, the upper end of the heating cavity is connected with a high-pressure airflow interface 1, and the lower end of the heating cavity is communicated with an inlet of a contraction section of a pull valve pipe 7.
As a preferred embodiment of the invention, referring to FIG. 1, the heating cavity is an annular cavity, the heating element 3 is of a multilayer metal tubular spiral structure, so that the whole space is heated uniformly, and the gas passes through the metal tube and generates strong turbulence to achieve the effect of heat exchange and heating; the heating cavity shell is made of pressure-bearing metal or is formed in one step by using an additive manufacturing technology, high-pressure airflow enters the upper part of the metal cylinder through the high-pressure air interface, the metal cylinder is filled with the high-pressure airflow through heating of the heating element and fully exchanges heat, and the high-pressure airflow enters the powder feeding system from the lower part of the metal cylinder, namely, the contraction section of the valve pulling pipe.
Referring to FIG. 1, a preferred embodiment of the present invention is shown in which the nozzle material is a light alloy material having good thermal conductivity
Referring to fig. 1, a temperature detection and control system 2 is connected to the high-pressure airflow heater, the temperature detection and control system 2 comprises a temperature measuring tube 6 and a controller, the temperature measuring tube 6 is arranged in the heating cavity, and the temperature measuring tube 6 and the heating element 3 are both connected with the controller.
Examples
Referring to fig. 1 to 4, the high pressure gas flow interface 1 of the laser deposition nozzle of this embodiment is used for receiving high pressure gas, the high pressure gas enters the heating cavity of the high pressure gas flow heater through the upper end high pressure gas passage, the high pressure gas is uniformly heated and expanded under the heating action of the heating element 3, enters the contraction section of the pull valve tube 7 of the powder feeding system, the powder is conveyed to the uppermost part of the expansion section of the pull valve tube 7 through the powder feeding tube 15, and at this time, the powder is contacted with the heated high pressure gas flow at the lower part of the throat of the pull valve tube 7, so that the powder is accelerated.
The optical system interface 4 is provided with two optical system interfaces 4, the two optical system interfaces 4 are symmetrically positioned on two sides of the valve pulling pipe 7, the valve pulling pipe 7 is used for being connected with the optical system 13, the lower end of the optical system 13 is connected with the optical system interface 4, the optical system interface 4 is convenient to connect and fasten with the optical system 13 from large to small, the optical fiber interface 12 is an upper end interface of the optical system 13 and is used for connecting a laser generating device, the laser channel 5 is arranged at the bottom of the optical system interface 4, the laser channel 5 is coaxial with the optical system interface 4, the laser channel 5 is mainly used for emitting laser and is provided with a channel, and the laser is in contact with powder sprayed out of the valve pulling pipe 7 at the position of the lower end of an.
The water cooling system is divided into an upper water cooling circulation and a lower water cooling circulation, the upper water cooling circulation comprises an upper water cooling straight pipe 8 and an upper water cooling annular pipe cavity 9, the upper water cooling straight pipes 8 are arranged on two sides inside the spray head, the two upper water cooling straight pipes 8 are arranged on two sides of the interior of the spray head, one water cooling straight pipe is a water inlet pipe, the other water cooling straight pipe is a water outlet pipe, the upper water cooling annular pipe cavity 9 is arranged in the center of the interior of the spray head, the upper water cooling annular pipe cavity 9 is arranged on the periphery of the throat opening of the valve pulling pipe 7 and used for conducting redundant heat, circulating water enters from the water inlet pipe, passes; lower part water-cooling circulation includes lower part water-cooling straight tube 10 and lower part water-cooling ring form lumen 11, lower part water-cooling straight tube 10 sets up in the inside both sides of shower nozzle, be provided with two altogether, two lower part water-cooling straight tubes 10 are about drawing valve pipe 7 symmetry, one is the inlet tube, another is the outlet pipe, lower part water-cooling ring form lumen 11 sets up in the inside central authorities of shower nozzle, lower part water-cooling ring form lumen 11 is located the periphery that draws valve pipe 7 expansion section and laser channel 5, be used for the unnecessary heat of conduction, the circulating water gets into from the inlet tube, through lower part water-cooling ring form lumen 11, take away unnecessary.
The temperature detection and control system 2 is arranged at the upper part of the gas heating system, the temperature detection and control system 2 is internally provided with a temperature measuring tube 6, the temperature measuring tube 6 is used for detecting the real-time temperature of the gas in the heating cavity and transmitting a real-time temperature signal to a controller of the temperature detection system 2, the controller can compare the obtained temperature signal with an initially set normal operation temperature range, and when the real-time temperature is in the normal operation temperature range, the controller continues to detect the real-time temperature without redundant operation; when the real-time temperature is higher than the normal operation temperature range, the controller can transmit a heating stopping signal to the gas heating system, the gas heating system receives the heating stopping signal, the heating element 3 stops heating, the heating starting signal can be transmitted to the gas heating element until the real-time temperature detected by the temperature measuring tube 6 is lower than the normal operation temperature range, the heating element 3 starts heating, so that the heating is a complete cycle, and the normal operation of the gas heating system is ensured under the real-time monitoring of the temperature detecting system 2.
Example 2
Selecting a hydraulic piston rod made of 27SiMn material, selecting alcohol as a cleaning agent, dipping cotton in the alcohol to clean oil stains and dirt on the surface of the hydraulic piston rod, placing the cleaned hydraulic piston rod in an ultrasonic cleaning device for deep cleaning, fastening the hydraulic piston rod on a lathe by using a clamping fixture after cleaning, fixing a laser deposition nozzle on a robot arm, inserting an optical fiber of a laser into an optical fiber interface 12 of an optical path system 13, connecting the optical path system 13 to an optical path system interface 4 of the nozzle, connecting high-pressure air flow to a high-pressure air flow interface 1 at the upper end of the nozzle, selecting iron-based 401 powder as a raw material of a coating, introducing the powder into a powder conveying pipe 15, starting the high-pressure air flow after ensuring that all devices are correctly connected, enabling the high-pressure air flow to enter a gas heating system through the high-pressure air flow interface 1, and starting a heating element 3, after the heating element 3 runs for 1min, observing that the temperature detection system 2 has no abnormality, ensuring that the heating element 3 runs normally, then powder is connected into the powder feeding pipe 15, the powder enters the lower part of the throat part of the valve pulling pipe 7 through the powder feeding pipe 15 and meets high-pressure airflow heated by the heating element 3 to form a mixed beam, the mixed beam is accelerated through the expansion section of the valve pulling pipe 7 and accelerated at the outlet part of the valve pulling pipe 7, a laser generating device is started, energy enters the optical path system 13 through optical fibers, the optical path system 13 emits laser, the laser passes through the laser channel 5 and contacts with the accelerated powder beam at the outlet part of the laser channel 5 to realize laser deposition, a lathe is started, the hydraulic piston rod starts to rotate, and meanwhile, a mechanical arm is started and starts to move transversely to form a coating on the surface of the hydraulic piston rod. The transverse moving speed of the robot arm is 1mm/s, the rotating speed of the lathe is 10r/min, high-pressure air connected to the high-pressure air flow interface 1 is 1Mpa, the temperature detected by the temperature measuring tube 6 is 200 ℃, the distance from the spray head to the surface of the hydraulic piston rod is 10mm, the laser power of the laser generating device is 1kw, the laser spot diameter is 5mm, and the coating thickness is 5 mm.
Example 3
Scanning a transmission gear by using three-dimensional modeling software, establishing a three-dimensional model with the same size, segmenting the three-dimensional model, wherein the thickness of a coating is 0.5mm, 100 layers are required to be deposited totally, the thickness of a deposited three-dimensional entity is 50mm, selecting a Q235 steel plate as a bottom material, selecting acetone as a cleaning agent, dipping cotton into acetone to clean oil stains and dirt on the surface of the Q235 steel plate, placing a cleaned hydraulic piston rod in an ultrasonic cleaning device to carry out deep cleaning, placing the Q235 steel plate on a bottom plate of an operation table after the cleaning is finished, inserting an optical fiber of a laser into an optical fiber interface 12 of an optical path system 13, connecting the optical path system 13 to an optical path system interface 4 of a spray head, connecting high-pressure air to a high-pressure air flow interface 1 at the upper end of the spray head, selecting Ni60 powder as a raw material of the coating, introducing the powder into a powder, after the connection of all the devices is ensured to be correct, the high-pressure airflow is started, the high-pressure airflow enters the gas heating system through the high-pressure airflow interface 1, then the heating element 3 starts to be started, after the heating element 3 runs for 1min, the temperature detection system 2 is observed to have no abnormality, after the heating element 3 is ensured to run normally, the powder is connected into the powder feeding pipe 15, the powder enters the lower part of the throat part of the valve pulling pipe 7 through the powder feeding pipe 15 and meets the high-pressure airflow heated by the heating element 3 to form a mixed beam, the mixed beam is accelerated through the expansion section of the valve pulling pipe 7 and is accelerated at the outlet part of the valve pulling pipe 7, the laser generating device is started, the energy enters the optical path system 13 through the optical fiber, the optical path system 13 emits laser, the laser passes through the laser channel 5 and is contacted with the accelerated powder beam at the outlet part of the laser channel 5 to realize laser deposition, and the three, the robot arm is started and starts to move according to a predetermined command. The moving speed of the spray head is 5mm/s, the high-pressure air connected into the high-pressure air flow interface 1 is 5Mpa, the temperature detected by the temperature measuring tube 6 is 500 ℃, the distance from the spray head to the surface of the hydraulic piston rod is 20mm, the laser power of the laser generating device is 3kw, the laser spot diameter is 7mm, and the coating thickness is 0.5 mm.
In conclusion, the invention has the following advantages:
1. the invention provides a corresponding connecting device for a laser light path system, provides a channel required by laser for the laser, and is beneficial to improving the stability and firmness of connection.
2. The powder feeding pipeline is a central powder feeding pipeline, the two sides of the powder feeding pipeline are provided with the lasers, the structural design of the powder feeding channel and the laser channel can realize accurate butt joint, the lateral laser beams and the central powder beam are intersected at one point on the central line of the whole structure, and the laser deposition efficiency and the powder utilization rate are improved.
3. The invention provides a water cooling system for the spray head, the upper part of the spray head is water cooled, and the lower part of the spray head is water cooled, so that the redundant energy generated by powder and laser can be conducted out, and the service life of the spray head can be prolonged.
4. The temperature detection system and the gas heating system are matched with each other, so that the normal operation of the gas heating system is ensured, and the safety and the stability of the whole equipment are improved.
Claims (8)
1. A laser deposition nozzle is characterized by comprising a high-pressure airflow heater and a nozzle, wherein a valve pulling pipe (7) is arranged in the center of the nozzle, the valve pulling pipe (7) extends from the upper end face of the nozzle to the lower end face of the nozzle, the valve pulling pipe (7) comprises a contraction section, a throat and an expansion section which are sequentially connected from top to bottom, a powder feeding pipe (15) communicated with the throat is arranged on the nozzle, the powder feeding pipe (15) extends to the outside of the nozzle, a light path system interface (4) is arranged at the upper end of the nozzle, a laser channel (5) is downwards arranged at the bottom of the light path system interface (4) of the nozzle, the lower end of the laser channel (5) extends to the lower end face of the nozzle, and the axis of the laser channel (5) is intersected with the axis of the valve pulling pipe (; the high-pressure airflow heater is arranged at the upper end of the nozzle, and a high-pressure airflow outlet of the high-pressure airflow heater is communicated with an inlet of a contraction section of the valve pulling pipe (7).
2. The laser deposition nozzle according to claim 1, wherein a plurality of nozzles are symmetrically arranged on the nozzle around the valve pulling tube (7) at the optical path system interface (4) and the laser channels (5) corresponding to the optical path system interface (4), and the axes of all the laser channels (5) intersect with the axis of the valve pulling tube (7) at one point.
3. The laser deposition showerhead of claim 1, wherein the nozzle has a water cooling structure therein, the water cooling structure having an inlet and an outlet.
4. The laser deposition nozzle according to claim 3, wherein the water-cooling structure comprises a water-cooling ring-shaped pipe cavity and a water-cooling straight pipe, the water-cooling ring-shaped pipe cavity surrounds the valve pulling pipe (7), the water-cooling straight pipe comprises a water inlet water-cooling straight pipe and a water outlet water-cooling straight pipe, one end of the water inlet water-cooling straight pipe and one end of the water outlet water-cooling straight pipe are communicated with the water-cooling ring-shaped pipe cavity, the other end of the water inlet water-cooling straight pipe and the other end of the water outlet water-cooling straight pipe extend to the outside of the nozzle, and the communication point of the water inlet water-cooling straight pipe and the water-.
5. The laser deposition nozzle according to claim 4, wherein the water-cooled annular tube cavity comprises an upper water-cooled annular tube cavity (9) and a lower water-cooled annular tube cavity (11), the upper water-cooled annular tube cavity (9) is located around the throat of the valve pulling tube (7), the lower water-cooled annular tube cavity (11) is located at a position, close to the lower end face, of the lower end of the nozzle, the lower water-cooled annular tube cavity (11) is located at the periphery of the expanding section of the valve pulling tube (7) and the laser channel (5), and the upper water-cooled annular tube cavity (9) and the lower water-cooled annular tube cavity (11) are both connected with a water inlet water-cooled straight tube and a water outlet water-cooled.
6. A laser deposition nozzle as claimed in claim 1, characterised in that the axis of the powder feed tube (15) is perpendicular to the axis of the valve pull tube (7).
7. The laser deposition nozzle according to claim 1, wherein the high-pressure air flow heater is internally provided with a heating cavity, a heating element (3) is arranged in the heating cavity, the upper end of the heating cavity is connected with the high-pressure air flow connector (1), and the lower end of the heating cavity is communicated with the inlet of the contraction section of the valve pulling tube (7).
8. The laser deposition showerhead of claim 7, wherein the high pressure gas flow heater is connected with a temperature detection and control system (2), the temperature detection and control system (2) comprises a temperature tube (6) and a controller, the temperature tube (6) is disposed in the heating chamber, and the temperature tube (6) and the heating element (3) are connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010469805.6A CN111482295A (en) | 2020-05-28 | 2020-05-28 | Laser deposition spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010469805.6A CN111482295A (en) | 2020-05-28 | 2020-05-28 | Laser deposition spray head |
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| Publication Number | Publication Date |
|---|---|
| CN111482295A true CN111482295A (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010469805.6A Pending CN111482295A (en) | 2020-05-28 | 2020-05-28 | Laser deposition spray head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416954A (en) * | 2021-07-02 | 2021-09-21 | 湘潭大学 | Laser cladding nozzle with real-time self-cleaning function and laser cladding equipment |
| CN115233207A (en) * | 2022-06-24 | 2022-10-25 | 广东省科学院新材料研究所 | Laser preheating ultrasonic rapid cold spraying nozzle device and deposition method |
-
2020
- 2020-05-28 CN CN202010469805.6A patent/CN111482295A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416954A (en) * | 2021-07-02 | 2021-09-21 | 湘潭大学 | Laser cladding nozzle with real-time self-cleaning function and laser cladding equipment |
| CN113416954B (en) * | 2021-07-02 | 2023-07-25 | 湘潭大学 | Laser cladding nozzle with real-time self-cleaning function and laser cladding equipment |
| CN115233207A (en) * | 2022-06-24 | 2022-10-25 | 广东省科学院新材料研究所 | Laser preheating ultrasonic rapid cold spraying nozzle device and deposition method |
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