WO2022057112A1 - Suspension liquid cold gas dynamic spray system and application thereof - Google Patents

Suspension liquid cold gas dynamic spray system and application thereof Download PDF

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Publication number
WO2022057112A1
WO2022057112A1 PCT/CN2020/135687 CN2020135687W WO2022057112A1 WO 2022057112 A1 WO2022057112 A1 WO 2022057112A1 CN 2020135687 W CN2020135687 W CN 2020135687W WO 2022057112 A1 WO2022057112 A1 WO 2022057112A1
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WO
WIPO (PCT)
Prior art keywords
suspension
spray gun
liquid
cold air
water cooling
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PCT/CN2020/135687
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French (fr)
Chinese (zh)
Inventor
卢静
解路
吴应东
汤烈明
孙澄川
李挺
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季华实验室
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Publication of WO2022057112A1 publication Critical patent/WO2022057112A1/en

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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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area

Definitions

  • the invention relates to the technical field of cold air power spraying, in particular to a suspension cold air power spraying system and its application.
  • Air-conditioning spraying technology is a new technology for surface modification of materials that is easy to operate, safe and green.
  • Cold air dynamic spraying refers to the formation of a dense coating by shooting the coating powder onto the substrate by supersonic gas and solid two-phase airflow at room temperature or lower temperature. Since the spraying technology does not have high temperature heating, the adverse effects of high temperature oxidation, gasification, phase change, ablation, etc. on the coating performance during the spraying process are reduced, making it suitable for aerospace, additive manufacturing, rail transit and other fields. Broad application prospects.
  • nanocoatings Due to the high strength of nanomaterials, less microcracks, excellent thermal shock resistance, and low wear, nanocoatings have become a very important research direction in the field of surface engineering in recent years.
  • thermal spraying technology is mainly used for the preparation of nanoscale material coatings.
  • the high temperature in the thermal spraying process will change the physical properties of nanomaterials, and an ideal nanomaterial coating cannot be obtained. Therefore, the use of cold spraying technology to prepare nanomaterial coatings can combine the technological advantages of cold spraying technology to ensure the consistency of the microstructure of the nanomaterial coating with the original nanomaterials, and avoid the modification of nanomaterials.
  • the spray deposition efficiency is low, and the deposition effect is not ideal. Therefore, the combination of nano-materials and cold air power spray technology has not been effectively applied.
  • a suspension cold air power spraying system comprising a control device, a spray gun device, a main gas supply device, a liquid supply air supply device and a suspension feeder, the spray gun device includes a spray gun;
  • the main gas supply device communicates with the main gas input port of the spray gun
  • the liquid-feeding gas supply device is communicated with the suspension feeder;
  • the suspension feeder is communicated with the liquid material input port of the spray gun;
  • the spray gun device, the suspension feeder, the main gas supply device and the liquid supply gas supply device are all connected to the control device, respectively.
  • the main gas supply device includes a liquid gas storage device, a vaporization device, a buffer device and a pressure regulating device connected in sequence, the liquid gas storage device is used for storing liquefied gas, and the vaporization device is used for The liquefied gas is vaporized, the buffer device is used to store the vaporized high-pressure main gas, and the pressure regulating device is used to adjust the high-pressure main gas to a preset pressure and output it at a constant pressure.
  • the main gas supply device provides main gas for the spray gun, and the main gas is at least one of nitrogen, helium and air.
  • the spray gun device further includes a robot arm, the spray gun is fixed on the robot arm, and the control device is connected to the robot arm.
  • the manipulator can perform three-axis movement and three-axis rotation in space.
  • the spray gun includes a Laval nozzle and a water cooling jacket, the Laval nozzle is provided with the main gas input port and the liquid material input port, and the water cooling jacket is wrapped around the puller nozzle. Exterior of the Vaal Nozzle.
  • the suspension feeder is provided with an air inlet pipeline and a liquid outlet pipeline;
  • One end of the air intake pipeline is communicated with the liquid feeding gas supply device, and one end of the air intake pipeline is arranged above the liquid level of the suspension in the suspension feeder;
  • One end of the liquid outlet pipeline is communicated with the liquid material input port of the spray gun, and one end of the liquid outlet pipeline is arranged below the liquid level of the suspension in the suspension feeder.
  • it also includes an atomizing nozzle, the atomizing nozzle is arranged between the suspension feeder and the spray gun, the atomizing nozzle is provided with a gas inlet, a liquid inlet and an atomizing vapor outlet, The gas inlet is communicated with the gas outlet of the liquid feeding gas supply device, the liquid inlet is communicated with the liquid outlet pipe of the suspension feeder, the atomizing steam outlet of the atomizing nozzle and the spray gun The said liquid material input port is connected.
  • it further includes a gas heating device, the control device is connected to the gas heating device, the gas heating device is arranged between the main gas supply device and the spray gun, and the main gas supply device The output port of the gas heating device is communicated with the input port of the gas heating device, and the output port of the gas heating device is communicated with the main gas input port of the spray gun.
  • the gas heating device includes a main heater, an auxiliary heater and a heat preservation device arranged in sequence, and the main gas output from the main gas supply device passes through the main heater, the auxiliary heater and the heat preservation device in sequence.
  • the holding device reaches a preset gas temperature.
  • it further includes a water cooling device, the control device is connected to the water cooling device, the water cooling device includes a first water cooling circuit and a second water cooling circuit, and the first water cooling circuit is connected to the spray gun The water cooling circuit is connected to form the first circulating cooling circuit;
  • the second water cooling circuit is communicated with the water cooling circuit of the gas heater to form a second circulating cooling circuit.
  • the main heater, the auxiliary heater and the outside of the heat preservation device are respectively provided with a water cooling circuit, and the second water cooling circuit is respectively connected with the water cooling circuit of the main heater,
  • the water cooling circuit of the auxiliary heater communicates with the water cooling circuit of the heat preservation device.
  • a sample stage is further included, the sample stage is used for fixing the spraying substrate, and the spray gun is used for spraying the spraying base material fixed on the sample stage.
  • the sample stage is capable of biaxial movement in a plane perpendicular to the spraying direction.
  • a dedusting device is further included, and the dedusting device is used to collect the powder after spraying.
  • the dust removal device includes a gravity separation dust collector and a filter cartridge dust collector connected in sequence.
  • the application of the suspension cold air dynamic spraying system in the preparation method of the coating comprises the following steps:
  • the powder with poor flowability is prepared to form a suspension
  • the suspension is sprayed on the surface of the substrate to form a coating on the surface of the substrate.
  • the liquid feeding air supply device is used to provide compressed air to the suspension feeder to transport the suspension
  • the suspension feeder is used to transport the suspension to the spray gun.
  • the main gas supply is used to deliver gas to the spray gun.
  • the powder particles are transported to the spray gun in the medium of suspension and sprayed to the surface of the substrate through the spray gun to form a coating.
  • the above-mentioned suspension cold air dynamic spraying system uses the form of suspension for spraying and conveying, which improves the fluidity of ultrafine powder particles, ensures high deposition efficiency of ultrafine powder particles in cold spraying, and improves the quality of the coating.
  • the above suspension cold air dynamic spraying system is suitable for the preparation of coatings of nano-scale materials, and also suitable for the preparation of coatings of other nano- or sub-micron-scale materials with different particle sizes.
  • the control device is used to control the operation of the spray gun device, the suspension feeder, the main gas supply device and the liquid supply gas supply device.
  • the spraying process parameters can be set globally through the control device, which can maximize the integrity of the spraying process parameters. It also increases the simplicity of parameter control.
  • FIG. 1 is a schematic diagram of a suspension cold air dynamic spraying system according to an embodiment.
  • FIG. 2 is a schematic structural diagram of a main gas supply device according to an embodiment.
  • FIG. 3 is a schematic structural diagram of a spray gun according to an embodiment.
  • FIG. 4 is a schematic diagram of a suspension feeding process according to an embodiment.
  • FIG. 5 is a work order diagram of the control system according to an embodiment.
  • FIG. 6 is a working flow chart of spraying by the cold air dynamic spraying system of the suspension shown in FIG. 1 .
  • FIG. 7 is a flow chart of the application of the suspension cold air dynamic spraying system shown in FIG. 1 in the coating preparation method.
  • 1 is the control panel
  • 2 is the control cabinet
  • 3 is the manipulator
  • 4 is the spray gun
  • 5 is the sample stage
  • 6 is the main gas supply device
  • 7 is the gas heating device
  • 8 is the water cooling device
  • 9 is the liquid supply gas supply device
  • 10 is a suspension feeder
  • 11 is an atomizing nozzle
  • 12 is a dust removal device
  • 13 is a storage device
  • 14 is a vaporization device
  • 15 is a buffer device
  • 16 is a pressure regulating device
  • 17 is the first pressure reducing valve
  • 18 is the first flow meter
  • 19 is the Laval nozzle
  • 20 is the water cooling jacket
  • 22 is the second pressure reducing valve
  • 24 is the second flow meter.
  • an embodiment of a suspension cold air power spraying system includes a control device, a spray gun device, a main air supply device 6 , a liquid supply air supply device 9 and a suspension feeder 10 , and the spray gun device includes a spray gun 4 .
  • the main gas supply device 6 communicates with the main gas input port of the spray gun 4 .
  • the liquid-feeding gas supply device 9 communicates with the suspension feeder 10 .
  • the suspension feeder 10 communicates with the liquid material input port of the spray gun 4 .
  • the spray gun device, the suspension feeder 10, the main gas supply device 6 and the liquid supply gas supply device 9 are all connected to the control device, respectively.
  • the liquid feeding air supply device 9 is used to provide compressed air to the suspension feeder 10 to deliver the suspension
  • the suspension feeder 10 is used to deliver the suspension to the spray gun 4 .
  • the main gas supply device 6 is used to deliver the main gas for spraying to the spray gun 4 .
  • the suspension can be sprayed onto the surface of the substrate through the spray gun 4 to form a nano-coating.
  • the above-mentioned suspension cold air dynamic spraying system uses the suspension feeder 10 to spray and transport the suspension prepared by the Chaoxu powder material, which improves the fluidity of the ultra-fine powder material and ensures the high deposition of ultra-fine powder particles in the cold spraying. efficiency, improving the quality of the coating.
  • the above-mentioned suspension cold air dynamic spraying system is suitable for the preparation of coatings of nano-scale materials, and also suitable for the preparation of coatings of other materials with different particle sizes.
  • the control device is used to control the spray gun device, the suspension feeder 10, the main gas supply device 6 and the liquid supply gas supply device 9 to work.
  • the integrity also increases the simplicity of parameter control.
  • the main gas supply device 6 includes a liquid gas storage device, a vaporization device, a buffer device and a pressure regulating device which are connected in sequence.
  • the liquid gas storage device 13 is used for storing liquefied gas.
  • the vaporizing device 14 is used for vaporizing the liquefied gas.
  • the buffer device 15 is used to store the vaporized high-pressure main gas.
  • the pressure regulating device 16 is used to adjust the high pressure main gas to a preset pressure and output it at a constant pressure.
  • the liquid gas storage device 13 and the vaporization device 14 ensure a sufficient supply of main gas.
  • the buffer device 15 ensures the short-term air supply demand when the air source is insufficient.
  • the pressure regulating device 16 satisfies the continuous and stable air pressure output.
  • the four links jointly ensure the stability of the gas supply link of the spraying process.
  • the main gas supply device 6 provides the main gas for the spray gun 4, and the main gas can be at least one of nitrogen, helium and air.
  • the spray gun device further includes a manipulator, the spray gun 4 is fixed on the manipulator, and the control device is connected to the manipulator.
  • the manipulator can perform three-axis movement and three-axis rotation in space.
  • the spray gun 4 is fixed on the manipulator 3 through the flange, and under the clamping of the manipulator 3, the corresponding spraying action is completed with a preset spraying trajectory.
  • the spray gun 4 includes a Laval nozzle 19 and a water cooling jacket 20 .
  • the Laval nozzle 19 is provided with a main gas input port and a liquid material input port, and the water cooling jacket 20 is wrapped outside the Laval nozzle 19 .
  • the water cooling circuit on the water cooling jacket 20 can remove the heat around the spray gun 4 through the water circulation, and keep its temperature within a reasonable range.
  • the suspension feeder 10 is provided with an inlet pipeline and a liquid outlet pipeline.
  • One end of the air inlet pipeline is communicated with the liquid feeding air supply device 9 , and the other end of the air inlet pipeline is arranged above the liquid level of the suspension in the suspension feeder 10 .
  • One end of the liquid outlet pipeline is communicated with the liquid material input port of the spray gun 4 , and the other end of the liquid outlet pipeline is arranged below the liquid level of the suspension in the suspension feeder 10 .
  • the suspension feeder 10 includes a cylinder body and a cover body, and the cover body is provided on the cylinder body. Both the liquid outlet pipeline and the air intake pipeline are arranged on the cover body.
  • the compressed gas provided by the liquid-feeding gas supply device 9 pressurizes the suspension feeder 10 through the inlet pipeline, so that the suspension flows out from the liquid outlet pipeline based on the pressure.
  • a first decompression valve 17 is provided in front of the intake pipeline, and the first decompression valve 17 is used to control the pressure of the compressed gas.
  • a flow meter 18 is provided behind the liquid outlet pipeline, and the flow meter 18 is used to observe the feeding rate.
  • the cold air power spraying system for the suspension further includes an atomizing nozzle 11 , and the atomizing nozzle 11 is arranged between the suspension feeder 10 and the spray gun 4 .
  • the atomizing nozzle 11 is provided with a gas inlet, a liquid inlet and an atomizing vapor outlet.
  • the gas inlet is communicated with the gas outlet of the liquid feeding gas supply device 9
  • the liquid inlet is communicated with the liquid outlet pipe of the suspension feeder 10
  • the atomizing steam outlet of the atomizing nozzle 11 is communicated with the liquid material input port of the spray gun 4 .
  • the atomizing nozzle 11 atomizes the suspension into dispersed small droplets by gas-liquid mixing.
  • the gas inlet, liquid inlet and atomizing steam outlet of the atomizing nozzle are distributed in a "T" shape.
  • a second pressure reducing valve 22 and a second flow meter 24 are provided between the gas inlet of the atomizing nozzle 11 and the gas outlet of the liquid feeding gas supply device 9 .
  • the suspension cold air power spraying system also includes a gas heating device 7, the control device is connected with the gas heating device 7, and the gas heating device 7 is provided between the main gas supply device 6 and the spray gun 4, the main The output port of the gas supply device 6 communicates with the input port of the gas heating device 7 , and the output port of the gas heating device 7 communicates with the main gas input port of the spray gun 4 .
  • the gas heating device 7 includes a three-stage heater, wherein the first stage is a main heater, the second stage is an auxiliary heater, and the third stage is a heat preservation device.
  • the main heater, the auxiliary heater and the heat preservation device are arranged in sequence.
  • the main gas output from the main gas supply device 6 reaches the preset gas temperature through the main heater, the auxiliary heater and the heat preservation device in sequence.
  • the gas reaching the preset temperature enters the main gas input port of the spray gun 4 through the pipeline.
  • the three-stage heating ensures the efficiency and stability of the gas heating.
  • the above-mentioned suspension cold air power spraying system transports the powder material with liquid as the medium, disperses the suspension into atomized droplets through the atomizing nozzle 11, and carries the powder droplets into the spray gun 4 through the heating gas, where the Laval spray gun 4 After moderate acceleration, it is sprayed to the substrate, and finally deposited on the surface of the substrate to form a coating.
  • the suspension cooling air power spraying system further includes a water cooling device 8, the control device is connected to the water cooling device 8, and the water cooling device 8 includes a first water cooling circuit and a second water cooling circuit, the first water cooling The circuit communicates with the water cooling circuit of the spray gun 4 to form a first circulating cooling circuit.
  • the second water cooling circuit communicates with the water cooling circuit of the gas heater 6 to form a second circulating cooling circuit.
  • a water cooling circuit is provided outside the main heater, the auxiliary heater, and the heat preservation device, respectively, and the second water cooling circuit is respectively connected to the water cooling circuit of the main heater, the water cooling circuit of the auxiliary heater, and the heat preservation device.
  • the water cooling circuit is connected.
  • the water cooling device 8 is used to cool the high temperature equipment in the suspension cold air power spraying system by water circulation, so as to ensure the continuous stability of the operation of the suspension cold air power spraying system.
  • the suspension cold air dynamic spraying system further includes a sample stage 5 , the sample stage 5 is used to fix the sprayed substrate, and the spray gun 4 is used to spray the fixed substrate on the sample stage.
  • the sample stage 5 is placed at a certain distance in front of the muzzle of the spray gun 4 .
  • the sample stage 5 is capable of biaxial movement in a plane perpendicular to the spraying direction. That is, the sample stage 5 can move along the X axis and the Y axis of the plane coordinate system on a plane perpendicular to the spraying direction.
  • the spray gun 4 can perform three-axis movement and three-axis rotation in space under the clamping of the manipulator 5. That is, the spray gun 4 can move along the X-axis, Y-axis and Z-axis of the earth coordinate system and rotate around the X-axis, Y-axis and Z-axis of its own coordinate system under the grip of the manipulator 5 . Therefore, the spray gun 4 and the sample stage 5 can be combined to achieve relative motion under eight degrees of freedom.
  • the spray gun 4 and the sample stage 5 can be converted in different directions and distances to meet the size contours of different substrates and the process flow. process requirements.
  • the suspension cold air dynamic spraying system further includes a dust removal device 12 , and the dust removal device 12 is used to collect powder that is not deposited on the surface of the substrate after spraying.
  • the dedusting device 12 includes two stages of dedusting. Specifically, the dust removal device 12 is installed below the sample stage 5 .
  • the dust removal device 12 includes a two-stage dust collector.
  • the first stage is a gravity separation dust collector
  • the second stage is a filter cartridge dust collector.
  • the gravity separation dust collector and the filter cartridge dust collector are connected in sequence.
  • Gravity separation dust collector can use gravity to complete the primary screening of powder particles with larger particle size.
  • the filter cartridge dust collector further sieves the powder particles with smaller particle size.
  • Two-stage dust removal can reduce the impact of larger particles on the filter cartridge, prolong the service life of the filter cartridge, and can recover the residual powder particles roughly according to the powder particle size, which ensures the environmental protection of the spraying technology and facilitates the recovery of powder particles. Reuse.
  • the control device includes a control panel 1 and a control cabinet 2 .
  • the control panel 1 is connected with the control cabinet 2 through a circuit.
  • the control panel 1 can set the process parameters and display the parameter changes in the spraying process in real time.
  • the parameter settings on the control panel 1 are converted into electrical signals and input to the control cabinet 2, so as to realize the communication connection and control with each device.
  • the work instruction flow of the control device can be seen in FIG. 5 .
  • the manipulator 3 , the main gas supply device 6 , the gas heating device 7 , the water cooling device 8 and the liquid feeding gas supply device 9 all realize data transmission and control with the control cabinet 2 through the circuit.
  • the working process of the suspension cold air power spraying system is as follows: First, set the process parameters through the control panel 1, including the main air pressure, main air temperature, suspension feeding pressure, spraying trajectory, water cooling temperature, etc., the setting is completed.
  • the control cabinet 2 recognizes the command and sends control signals to each device respectively, and each device starts operation immediately after receiving the signal; after the liquid gas supply device 9 is started, it starts to pressurize the suspension feeder 10 to transport the suspension, the suspension The liquid is mixed with the gas by the atomizing nozzle 11 and atomized into small droplets and then enters the spray gun 4; at the same time, the main gas supply device 6 starts to supply gas, and the main gas reaches the preset temperature after passing through the gas heating device 7 and also enters the spray gun 4; the atomized liquid After the droplets and the main gas are delivered to the spray gun 4, the manipulator 3 clamps the spray gun 4 to start working with the preset spraying trajectory, and the water cooling device 8 in spraying continues to perform water circulation cooling on the spray gun 4 and the gas heating device 7; until all the spraying tasks are completed. After that all devices stop working and are in standby state.
  • the application of the suspension cold air dynamic spraying system in the coating preparation method is clarified, that is, the specific steps in which the suspension cold air dynamic spraying system is used to prepare the nanocoating layer are clarified, so the The preparation method of the coating specifically comprises the following steps:
  • the powder can be nano-scale powder or other particle size sub-micron-scale powder.
  • the cold air power spraying system in the step of spraying the suspension on the surface of the substrate by means of cold air power spraying, can be used for the cold air power spraying.
  • the preparation method of the above-mentioned nano-coating by preparing ultra-fine powder particles to form a suspension, and then spraying by means of cold air dynamic spraying, the fluidity of the ultra-fine powder particles is effectively improved, and the deposition of higher particles in the cold spraying is guaranteed. efficiency, improving the quality of the coating.
  • the preparation of nano-coatings by cold spraying technology can combine the technological advantages of cold spraying technology to ensure the consistency of the microstructure of the coating with the original nanomaterials, avoid the modification of materials during the spraying process, and maximize the The high bonding strength and low porosity of the nano-coating can be maintained to a certain extent.
  • the suspension cold air power spraying system includes a suspension feeder 10 and an atomizing nozzle 11.
  • a suspension feeder 10 By controlling the pressure and flow of the liquid feeding gas and the atomizing gas, the feeding speed and atomization effect of the suspension can be adjusted to improve the different Spraying process quality of nanomaterials.
  • the suspension cold air dynamic spraying system supports eight-degree-of-freedom spatial position adjustment, which can realize the conversion of the direction and distance of the spray gun 4 relative to the sample stage 5 during spraying, and realize multi-angle and multi-directional spraying.
  • the size profile of the material selects different technological processes.
  • the suspension cold air power spraying system includes an independent water cooling device 8, which can perform water circulation cooling on high temperature devices such as the gas heating device 7 and the spray gun 4 in real time, improving the continuity of long-term spraying.
  • the gas heating device 7 includes a three-stage gas heater, which improves the stability of the heating temperature of the main gas for spraying and ensures the stability of the spraying process.
  • the dust removal device 12 includes a two-stage dust collector, which can recycle the residual powder particles by particle size, which ensures the environmental protection degree of the spraying technology and facilitates the recycling and reuse of the powder particles.

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Abstract

A suspension liquid cold gas dynamic spray system and an application thereof. The suspension liquid cold gas dynamic spray system comprises a control device (1), a spray gun device (4), a primary gas supply device (6), a liquid conveying air supply device (9), and a suspension liquid feeder (10). According to the system, nanoscale material powder is conveyed by using a liquid as a medium, a suspension liquid is dispersed into atomized droplets by means of an atomizing nozzle (11), the nanoscale powder droplets are carried by heating gas to enter a spray gun (4), the droplets are accelerated in the Laval spray gun (4) and then sprayed to a base material, and finally deposition is performed on the surface of the base material to form a nano material coating. A cold spraying technology is used for preparing the nano material coating, the process advantages of the cold spraying technology can be combined, the consistency of the microstructure of the coating and the microstructure of an original nano material is guaranteed, the material is prevented from being modified in the spraying process, and therefore the characteristics of high bonding strength, low porosity and the like of the nano material coating are kept to the maximum extent.

Description

悬浮液冷气动力喷涂***及其应用Suspension Cold Air Power Spraying System and Its Application 技术领域technical field
本发明涉及冷气动力喷涂技术领域，尤其涉及悬浮液冷气动力喷涂***及其应用。The invention relates to the technical field of cold air power spraying, in particular to a suspension cold air power spraying system and its application.
背景技术Background technique
冷气动力喷涂技术是一种操作简便、安全绿色的材料表面改性新技术。冷气动力喷涂指在常温下或较低的温度下，由超音速气、固两相气流将涂层粉末击射到基板形成质密涂层。由于该喷涂技术不存在高温加热，减少了喷涂过程中高温氧化、气化、相变、烧蚀等对涂层性能不利的影响出现，使其在航天航空、增材制造、轨道交通等领域存在广泛的应用前景。Air-conditioning spraying technology is a new technology for surface modification of materials that is easy to operate, safe and green. Cold air dynamic spraying refers to the formation of a dense coating by shooting the coating powder onto the substrate by supersonic gas and solid two-phase airflow at room temperature or lower temperature. Since the spraying technology does not have high temperature heating, the adverse effects of high temperature oxidation, gasification, phase change, ablation, etc. on the coating performance during the spraying process are reduced, making it suitable for aerospace, additive manufacturing, rail transit and other fields. Broad application prospects.
由于纳米材料拥有的高强度、微裂纹少、耐热震性优、磨损低等特性，近些年纳米涂层成为了表面工程领域中非常重要的研究方向。目前对于纳米级材料涂层制备主要利用热喷涂技术，然而热喷涂过程中的高温会使纳米材料的物理特性发生改变，无法得到理想的纳米材料涂层。因此，利用冷喷涂技术制备纳米材料涂层，可以结合冷喷涂技术的工艺优势，保证纳米材料涂层的显微组织结构与原始纳米材料的一致性，避免了纳米材料发生改性。但由于纳米级颗粒粒度过小，流动性较差，导致了喷涂沉积效率较低，沉积效果不甚理想，因而纳米材料与冷气动力喷涂技术还未得到有效的结合应用。Due to the high strength of nanomaterials, less microcracks, excellent thermal shock resistance, and low wear, nanocoatings have become a very important research direction in the field of surface engineering in recent years. At present, thermal spraying technology is mainly used for the preparation of nanoscale material coatings. However, the high temperature in the thermal spraying process will change the physical properties of nanomaterials, and an ideal nanomaterial coating cannot be obtained. Therefore, the use of cold spraying technology to prepare nanomaterial coatings can combine the technological advantages of cold spraying technology to ensure the consistency of the microstructure of the nanomaterial coating with the original nanomaterials, and avoid the modification of nanomaterials. However, due to the small particle size and poor fluidity of nano-scale particles, the spray deposition efficiency is low, and the deposition effect is not ideal. Therefore, the combination of nano-materials and cold air power spray technology has not been effectively applied.
发明内容SUMMARY OF THE INVENTION
鉴于此，有必要提供一种沉积效率较高的悬浮液冷气动力喷涂***及其应用。In view of this, it is necessary to provide a suspension cold air dynamic spraying system with high deposition efficiency and its application.
一种悬浮液冷气动力喷涂***，包括控制装置、喷枪装置、主气供给装置、送液气供给装置和悬浮液送料器，所述喷枪装置包括喷枪；A suspension cold air power spraying system, comprising a control device, a spray gun device, a main gas supply device, a liquid supply air supply device and a suspension feeder, the spray gun device includes a spray gun;
所述主气供给装置和所述喷枪的主气输入口连通；the main gas supply device communicates with the main gas input port of the spray gun;
所述送液气供给装置和所述悬浮液送料器连通；The liquid-feeding gas supply device is communicated with the suspension feeder;
所述悬浮液送料器和所述喷枪的液料输入口连通；The suspension feeder is communicated with the liquid material input port of the spray gun;
所述喷枪装置、所述悬浮液送料器、所述主气供给装置和所述送液气供给装置均分别和所述控制装置连接。The spray gun device, the suspension feeder, the main gas supply device and the liquid supply gas supply device are all connected to the control device, respectively.
在一个实施例中，所述主气供给装置包括依次连接的液态气存储装置、汽化装置、缓冲装置和调压装置，所述液态气存储装置用于存储液化态气体，所述汽化装置用于将所述液化态气体进行汽化处理，所述缓冲装置用于存储汽化后的高压主气，所述调压装置用于将所述高压主气调节至预设压力并恒压输出。In one embodiment, the main gas supply device includes a liquid gas storage device, a vaporization device, a buffer device and a pressure regulating device connected in sequence, the liquid gas storage device is used for storing liquefied gas, and the vaporization device is used for The liquefied gas is vaporized, the buffer device is used to store the vaporized high-pressure main gas, and the pressure regulating device is used to adjust the high-pressure main gas to a preset pressure and output it at a constant pressure.
在一个实施例中，所述主气供给装置为所述喷枪提供主气，所述主气为氮气、氦气和空气中的至少一种。In one embodiment, the main gas supply device provides main gas for the spray gun, and the main gas is at least one of nitrogen, helium and air.
在一个实施例中，所述喷枪装置还包括机械手，所述喷枪固定在所述机械手上，所述控制装置和所述机械手连接。In one embodiment, the spray gun device further includes a robot arm, the spray gun is fixed on the robot arm, and the control device is connected to the robot arm.
在一个实施例中，所述机械手能进行空间三轴移动与三轴转动。In one embodiment, the manipulator can perform three-axis movement and three-axis rotation in space.
在一个实施例中，所述喷枪包括拉瓦尔喷管和水冷套，所述拉瓦尔喷管上设有所述主气输入口和所述液料输入口，所述水冷套包裹在所述拉瓦尔喷管的外部。In one embodiment, the spray gun includes a Laval nozzle and a water cooling jacket, the Laval nozzle is provided with the main gas input port and the liquid material input port, and the water cooling jacket is wrapped around the puller nozzle. Exterior of the Vaal Nozzle.
在一个实施例中，所述悬浮液送料器设有进气管路和出液管路；In one embodiment, the suspension feeder is provided with an air inlet pipeline and a liquid outlet pipeline;
所述进气管路的一端和所述送液气供给装置连通，所述进气管路的一端设于所述悬浮液送料器内的悬浮液的液面上方；One end of the air intake pipeline is communicated with the liquid feeding gas supply device, and one end of the air intake pipeline is arranged above the liquid level of the suspension in the suspension feeder;
所述出液管路的一端和所述喷枪的液料输入口连通，所述出液管路的一端设于所述悬浮液送料器内的悬浮液的液面下方。One end of the liquid outlet pipeline is communicated with the liquid material input port of the spray gun, and one end of the liquid outlet pipeline is arranged below the liquid level of the suspension in the suspension feeder.
在一个实施例中，还包括雾化喷嘴，所述雾化喷嘴设于所述悬浮液送料器和所述喷枪之间，所述雾化喷嘴设有气体进口、液体进口和雾化汽出口，所述气体进口与所述送液气供给装置的气体出口连通，所述液体进口与所述悬浮液 送料器的出液管道连通，所述雾化喷嘴的所述雾化汽出口和所述喷枪的所述液料输入口连通。In one embodiment, it also includes an atomizing nozzle, the atomizing nozzle is arranged between the suspension feeder and the spray gun, the atomizing nozzle is provided with a gas inlet, a liquid inlet and an atomizing vapor outlet, The gas inlet is communicated with the gas outlet of the liquid feeding gas supply device, the liquid inlet is communicated with the liquid outlet pipe of the suspension feeder, the atomizing steam outlet of the atomizing nozzle and the spray gun The said liquid material input port is connected.
在一个实施例中，还包括气体加热装置，所述控制装置和所述气体加热装置连接，所述气体加热装置设于所述主气供给装置和所述喷枪之间，所述主气供给装置的输出口与所述气体加热装置的输入口连通，所述气体加热装置的输出口和所述喷枪的主气输入口连通。In one embodiment, it further includes a gas heating device, the control device is connected to the gas heating device, the gas heating device is arranged between the main gas supply device and the spray gun, and the main gas supply device The output port of the gas heating device is communicated with the input port of the gas heating device, and the output port of the gas heating device is communicated with the main gas input port of the spray gun.
在一个实施例中，所述气体加热装置包括依次设置的主加热器、辅加热器和保温装置，所述主气供给装置输出的主气依次通过所述主加热器、所述辅加热器和所述保温装置达到预设的气体温度。In one embodiment, the gas heating device includes a main heater, an auxiliary heater and a heat preservation device arranged in sequence, and the main gas output from the main gas supply device passes through the main heater, the auxiliary heater and the heat preservation device in sequence. The holding device reaches a preset gas temperature.
在一个实施例中，还包括水冷却装置，所述控制装置和所述水冷却装置连接，所述水冷却装置包括第一水冷回路和第二水冷回路，所述第一水冷回路与所述喷枪的水冷却回路连通，形成第一循环冷却回路；In one embodiment, it further includes a water cooling device, the control device is connected to the water cooling device, the water cooling device includes a first water cooling circuit and a second water cooling circuit, and the first water cooling circuit is connected to the spray gun The water cooling circuit is connected to form the first circulating cooling circuit;
所述第二水冷回路和所述气体加热器的水冷却回路连通，形成第二循环冷却回路。The second water cooling circuit is communicated with the water cooling circuit of the gas heater to form a second circulating cooling circuit.
在一个实施例中，所述主加热器、所述辅加热器和所述保温装置的外部分别设有水冷却回路，所述第二水冷回路分别和所述主加热器的水冷却回路、所述辅加热器的水冷却回路和所述保温装置的水冷却回路连通。In one embodiment, the main heater, the auxiliary heater and the outside of the heat preservation device are respectively provided with a water cooling circuit, and the second water cooling circuit is respectively connected with the water cooling circuit of the main heater, The water cooling circuit of the auxiliary heater communicates with the water cooling circuit of the heat preservation device.
在一个实施例中，还包括样品台，所述样品台用于固定喷涂基材，所述喷枪用于向所述样品台上固定的所述喷涂基材进行喷涂。In one embodiment, a sample stage is further included, the sample stage is used for fixing the spraying substrate, and the spray gun is used for spraying the spraying base material fixed on the sample stage.
在一个实施例中，所述样品台在垂直喷涂方向的平面上能进行两轴移动。In one embodiment, the sample stage is capable of biaxial movement in a plane perpendicular to the spraying direction.
在一个实施例中，还包括除尘装置，所述除尘装置用于收集喷涂后的粉末。In one embodiment, a dedusting device is further included, and the dedusting device is used to collect the powder after spraying.
在一个实施例中，所述除尘装置包括依次连接的重力分离除尘器和滤筒除尘器。In one embodiment, the dust removal device includes a gravity separation dust collector and a filter cartridge dust collector connected in sequence.
所述悬浮液冷气动力喷涂***在涂层的制备方法中的应用，所述涂层的制备方法包括以下步骤：The application of the suspension cold air dynamic spraying system in the preparation method of the coating, the preparation method of the coating comprises the following steps:
将流动性较差的粉末制备形成悬浮液；The powder with poor flowability is prepared to form a suspension;
采用所述悬浮液冷气动力喷涂***和采用冷气动力喷涂的方式，将所述悬浮液喷涂至基材表面，在基材表面形成涂层。Using the suspension cold air power spraying system and the cold air power spraying method, the suspension is sprayed on the surface of the substrate to form a coating on the surface of the substrate.
上述悬浮液冷气动力喷涂***，送液气供给装置用于为悬浮液送料器提供压缩空气以输送悬浮液，悬浮液送料器用于向喷枪输送悬浮液。主气供给装置用于向喷枪输送气体。粉末颗粒以悬浮液为介质输送至喷枪并通过喷枪加速喷涂至基材表面，形成涂层。上述悬浮液冷气动力喷涂***，利用悬浮液的形式进行喷涂输送，提高了超细粉末颗粒的流动性，保证了冷喷涂中超细粉末颗粒较高的沉积效率，提高了涂层的质量。上述悬浮液冷气动力喷涂***适用于纳米级材料的涂层的制备，还可适用于其他不同粒度的纳米或亚微米级材料的涂层制备。In the above-mentioned suspension cold air power spraying system, the liquid feeding air supply device is used to provide compressed air to the suspension feeder to transport the suspension, and the suspension feeder is used to transport the suspension to the spray gun. The main gas supply is used to deliver gas to the spray gun. The powder particles are transported to the spray gun in the medium of suspension and sprayed to the surface of the substrate through the spray gun to form a coating. The above-mentioned suspension cold air dynamic spraying system uses the form of suspension for spraying and conveying, which improves the fluidity of ultrafine powder particles, ensures high deposition efficiency of ultrafine powder particles in cold spraying, and improves the quality of the coating. The above suspension cold air dynamic spraying system is suitable for the preparation of coatings of nano-scale materials, and also suitable for the preparation of coatings of other nano- or sub-micron-scale materials with different particle sizes.
控制装置用于控制喷枪装置、悬浮液送料器、主气供给装置和送液气供给装置工作，可通过控制装置直接对喷涂工艺参数进行全局化设置，能够最大限度满足喷涂工艺参数的整体性，也增加了参数控制的简便性。The control device is used to control the operation of the spray gun device, the suspension feeder, the main gas supply device and the liquid supply gas supply device. The spraying process parameters can be set globally through the control device, which can maximize the integrity of the spraying process parameters. It also increases the simplicity of parameter control.
上述悬浮液冷气动力喷涂***在涂层的制备方法中的应用，通过将超细粉末颗粒制备形成悬浮液，再通过冷气动力喷涂的方式进行喷涂，有效提高了超细粉末颗粒的流动性，保证了冷喷涂中超细粉末颗粒较高的沉积效率，提高了涂层的质量。The application of the above-mentioned suspension cold air dynamic spraying system in the coating preparation method, by preparing ultrafine powder particles to form a suspension, and then spraying by cold air dynamic spraying, the fluidity of the ultrafine powder particles is effectively improved, ensuring that The higher deposition efficiency of ultra-fine powder particles in cold spraying improves the quality of the coating.
附图说明Description of drawings
图1是一实施方式的悬浮液冷气动力喷涂***示意图。FIG. 1 is a schematic diagram of a suspension cold air dynamic spraying system according to an embodiment.
图2是一实施例的主气供给装置的结构示意图。FIG. 2 is a schematic structural diagram of a main gas supply device according to an embodiment.
图3是一实施例的喷***构示意图。FIG. 3 is a schematic structural diagram of a spray gun according to an embodiment.
图4是一实施例的悬浮液送料流程示意图。FIG. 4 is a schematic diagram of a suspension feeding process according to an embodiment.
图5是一实施例的控制***的工作指令图。FIG. 5 is a work order diagram of the control system according to an embodiment.
图6是图1所示悬浮液冷气动力喷涂***进行喷涂的工作流程图。FIG. 6 is a working flow chart of spraying by the cold air dynamic spraying system of the suspension shown in FIG. 1 .
图7是图1所示悬浮液冷气动力喷涂***在涂层制备方法的应用的流程框图。FIG. 7 is a flow chart of the application of the suspension cold air dynamic spraying system shown in FIG. 1 in the coating preparation method.
其中，1为控制面板，2为控制柜，3为机械手，4为喷枪，5为样品台，6为主气供给装置，7为气体加热装置，8为水冷却装置，9为送液气供给装置，10为悬浮液送料器，11为雾化喷嘴，12为除尘装置，13为存储装置，14为汽化装置，15为缓冲装置，16为调压装置，17为第一减压阀，18为第一流量计，19为拉瓦尔喷管，20为水冷套，22为第二减压阀，24为第二流量计。Among them, 1 is the control panel, 2 is the control cabinet, 3 is the manipulator, 4 is the spray gun, 5 is the sample stage, 6 is the main gas supply device, 7 is the gas heating device, 8 is the water cooling device, and 9 is the liquid supply gas supply device, 10 is a suspension feeder, 11 is an atomizing nozzle, 12 is a dust removal device, 13 is a storage device, 14 is a vaporization device, 15 is a buffer device, 16 is a pressure regulating device, 17 is the first pressure reducing valve, 18 is the first flow meter, 19 is the Laval nozzle, 20 is the water cooling jacket, 22 is the second pressure reducing valve, and 24 is the second flow meter.
具体实施方式detailed description
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某 一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.
在本发明的描述中，需要理解的是，如“上”等指示方位或位置的关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，或者是本领域技术人员惯常理解的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的设备或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the relationship indicating orientation or position such as "up" is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship that is usually placed when the product of the invention is used. , or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it should not be construed as a limitation of the present invention.
此外，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.
下面结合附图，对本发明的具体实施方式进行详细说明。The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
请参考图1，一实施方式的悬浮液冷气动力喷涂***，包括控制装置、喷枪装置、主气供给装置6、送液气供给装置9和悬浮液送料器10，喷枪装置包括喷枪4。Please refer to FIG. 1 , an embodiment of a suspension cold air power spraying system includes a control device, a spray gun device, a main air supply device 6 , a liquid supply air supply device 9 and a suspension feeder 10 , and the spray gun device includes a spray gun 4 .
主气供给装置6和喷枪4的主气输入口连通。The main gas supply device 6 communicates with the main gas input port of the spray gun 4 .
送液气供给装置9和悬浮液送料器10连通。The liquid-feeding gas supply device 9 communicates with the suspension feeder 10 .
悬浮液送料器10和喷枪4的液料输入口连通。The suspension feeder 10 communicates with the liquid material input port of the spray gun 4 .
喷枪装置、悬浮液送料器10、主气供给装置6和送液气供给装置9均分别和控制装置连接。The spray gun device, the suspension feeder 10, the main gas supply device 6 and the liquid supply gas supply device 9 are all connected to the control device, respectively.
上述悬浮液冷气动力喷涂***，送液气供给装置9用于为悬浮液送料器10提供压缩空气以输送悬浮液，悬浮液送料器10用于向喷枪4输送悬浮液。主气供给装置6用于向喷枪4输送喷涂主气。悬浮液通过喷枪4可以喷涂至基材表面，形成纳米涂层。上述悬浮液冷气动力喷涂***，利用悬浮液送料器10将朝旭粉末材料制备的悬浮液进行喷涂输送，提高了超细粉末材料的流动 性，保证了冷喷涂中超细粉末颗粒较高的沉积效率，提高了涂层的质量。上述悬浮液冷气动力喷涂***适用于纳米级材料的涂层的制备，还可适用于其他不同粒度的材料的涂层制备。In the above-mentioned suspension cold air power spraying system, the liquid feeding air supply device 9 is used to provide compressed air to the suspension feeder 10 to deliver the suspension, and the suspension feeder 10 is used to deliver the suspension to the spray gun 4 . The main gas supply device 6 is used to deliver the main gas for spraying to the spray gun 4 . The suspension can be sprayed onto the surface of the substrate through the spray gun 4 to form a nano-coating. The above-mentioned suspension cold air dynamic spraying system uses the suspension feeder 10 to spray and transport the suspension prepared by the Chaoxu powder material, which improves the fluidity of the ultra-fine powder material and ensures the high deposition of ultra-fine powder particles in the cold spraying. efficiency, improving the quality of the coating. The above-mentioned suspension cold air dynamic spraying system is suitable for the preparation of coatings of nano-scale materials, and also suitable for the preparation of coatings of other materials with different particle sizes.
控制装置用于控制喷枪装置、悬浮液送料器10、主气供给装置6和送液气供给装置9工作，可通过控制装置直接对喷涂工艺参数进行全局化设置，能够最大限度满足喷涂工艺参数的整体性，也增加了参数控制的简便性。The control device is used to control the spray gun device, the suspension feeder 10, the main gas supply device 6 and the liquid supply gas supply device 9 to work. The integrity also increases the simplicity of parameter control.
如图2所示，主气供给装置6包括依次连接的液态气存储装置、汽化装置、缓冲装置和调压装置。液态气存储装置13用于存储液化态气体。汽化装置14用于将液化态气体进行汽化处理。缓冲装置15用于存储汽化后的高压主气。调压装置16用于将高压主气调节至预设压力并恒压输出。液态气存储装置13和汽化装置14保证充足的主气供应。缓冲装置15保障了气源不足时的短时供气需求。调压装置16满足了持续、稳定的气压输出。四个环节共同确保了喷涂工艺的气体供给环节的稳定性。As shown in FIG. 2 , the main gas supply device 6 includes a liquid gas storage device, a vaporization device, a buffer device and a pressure regulating device which are connected in sequence. The liquid gas storage device 13 is used for storing liquefied gas. The vaporizing device 14 is used for vaporizing the liquefied gas. The buffer device 15 is used to store the vaporized high-pressure main gas. The pressure regulating device 16 is used to adjust the high pressure main gas to a preset pressure and output it at a constant pressure. The liquid gas storage device 13 and the vaporization device 14 ensure a sufficient supply of main gas. The buffer device 15 ensures the short-term air supply demand when the air source is insufficient. The pressure regulating device 16 satisfies the continuous and stable air pressure output. The four links jointly ensure the stability of the gas supply link of the spraying process.
进一步的，主气供给装置6为喷枪4提供主气，主气可以为氮气、氦气和空气中的至少一种。Further, the main gas supply device 6 provides the main gas for the spray gun 4, and the main gas can be at least one of nitrogen, helium and air.
在图1所示的实施例中，喷枪装置还包括机械手，喷枪4固定在机械手上，控制装置和机械手连接。In the embodiment shown in FIG. 1 , the spray gun device further includes a manipulator, the spray gun 4 is fixed on the manipulator, and the control device is connected to the manipulator.
进一步的，机械手能进行空间三轴移动与三轴转动。喷枪4通过法兰盘固定在机械手3上，并在机械手3的夹持下以预设的喷涂轨迹完成相应的喷涂动作。Further, the manipulator can perform three-axis movement and three-axis rotation in space. The spray gun 4 is fixed on the manipulator 3 through the flange, and under the clamping of the manipulator 3, the corresponding spraying action is completed with a preset spraying trajectory.
请参考图3，喷枪4包括拉瓦尔喷管19和水冷套20，拉瓦尔喷管19上设有主气输入口和液料输入口，水冷套20包裹在拉瓦尔喷管19的外部。水冷套20上有水冷却回路。水冷套20上的水冷却回路可通过水循环带走喷枪4周围 的热量，使其温度保持在合理范围之内。Please refer to FIG. 3 , the spray gun 4 includes a Laval nozzle 19 and a water cooling jacket 20 . The Laval nozzle 19 is provided with a main gas input port and a liquid material input port, and the water cooling jacket 20 is wrapped outside the Laval nozzle 19 . There is a water cooling circuit on the water cooling jacket 20 . The water cooling circuit on the water cooling jacket 20 can remove the heat around the spray gun 4 through the water circulation, and keep its temperature within a reasonable range.
请参考图4，悬浮液送料器10设有进气管路和出液管路。进气管路的一端和送液气供给装置9连通，进气管路的另一端设于悬浮液送料器10内的悬浮液的液面上方。出液管路的一端和喷枪4的液料输入口连通，出液管路的另一端设于悬浮液送料器10内的悬浮液的液面下方。Referring to FIG. 4 , the suspension feeder 10 is provided with an inlet pipeline and a liquid outlet pipeline. One end of the air inlet pipeline is communicated with the liquid feeding air supply device 9 , and the other end of the air inlet pipeline is arranged above the liquid level of the suspension in the suspension feeder 10 . One end of the liquid outlet pipeline is communicated with the liquid material input port of the spray gun 4 , and the other end of the liquid outlet pipeline is arranged below the liquid level of the suspension in the suspension feeder 10 .
具体的，悬浮液送料器10包括筒体和盖体，盖体设于筒体上。出液管路和进气管路都设于盖体上。送液气供给装置9提供的压缩气体经过进气管路为悬浮液送料器10加压，从而悬浮液基于压力从出液管路流出。进一步的，进气管路前设有第一减压阀17，第一减压阀17用于控制压缩气体压力。出液管路后设有流量计18，流量计18用于观测送料速率。Specifically, the suspension feeder 10 includes a cylinder body and a cover body, and the cover body is provided on the cylinder body. Both the liquid outlet pipeline and the air intake pipeline are arranged on the cover body. The compressed gas provided by the liquid-feeding gas supply device 9 pressurizes the suspension feeder 10 through the inlet pipeline, so that the suspension flows out from the liquid outlet pipeline based on the pressure. Further, a first decompression valve 17 is provided in front of the intake pipeline, and the first decompression valve 17 is used to control the pressure of the compressed gas. A flow meter 18 is provided behind the liquid outlet pipeline, and the flow meter 18 is used to observe the feeding rate.
在图1所示的实施例中，悬浮液冷气动力喷涂***还包括雾化喷嘴11，雾化喷嘴11设于悬浮液送料器10和喷枪4之间。雾化喷嘴11设有气体进口、液体进口和雾化汽出口。气体进口与送液气供给装置9的气体出口连通，液体进口与悬浮液送料器10的出液管道连通，雾化喷嘴11的雾化汽出口和喷枪4的液料输入口连通。雾化喷嘴11通过气液混合将悬浮液雾化为分散的小液滴。通过设置雾化喷嘴11将悬浮液送至喷枪4前进行雾化处理，可以将悬浮液雾化为分散的小液滴，从而加速悬浮液的蒸发以保证喷涂质量。In the embodiment shown in FIG. 1 , the cold air power spraying system for the suspension further includes an atomizing nozzle 11 , and the atomizing nozzle 11 is arranged between the suspension feeder 10 and the spray gun 4 . The atomizing nozzle 11 is provided with a gas inlet, a liquid inlet and an atomizing vapor outlet. The gas inlet is communicated with the gas outlet of the liquid feeding gas supply device 9 , the liquid inlet is communicated with the liquid outlet pipe of the suspension feeder 10 , and the atomizing steam outlet of the atomizing nozzle 11 is communicated with the liquid material input port of the spray gun 4 . The atomizing nozzle 11 atomizes the suspension into dispersed small droplets by gas-liquid mixing. By setting the atomizing nozzle 11, the suspension is atomized before being sent to the spray gun 4, and the suspension can be atomized into small dispersed droplets, thereby accelerating the evaporation of the suspension to ensure the spraying quality.
雾化喷嘴的气体进口、液体进口和雾化汽出口，三路通道呈“T”型分布。请参考图4，进一步的，雾化喷嘴11气体进口与送液气供给装置9的气体出口之间设有第二减压阀22和第二流量计24。The gas inlet, liquid inlet and atomizing steam outlet of the atomizing nozzle are distributed in a "T" shape. Referring to FIG. 4 , further, a second pressure reducing valve 22 and a second flow meter 24 are provided between the gas inlet of the atomizing nozzle 11 and the gas outlet of the liquid feeding gas supply device 9 .
在图1所示的实施例中，悬浮液冷气动力喷涂***还包括气体加热装置7，控制装置和气体加热装置7连接，气体加热装置7设于主气供给装置6和喷枪4之间，主气供给装置6的输出口与气体加热装置7的输入口连通，气体加热 装置7的输出口和喷枪4的主气输入口连通。In the embodiment shown in FIG. 1, the suspension cold air power spraying system also includes a gas heating device 7, the control device is connected with the gas heating device 7, and the gas heating device 7 is provided between the main gas supply device 6 and the spray gun 4, the main The output port of the gas supply device 6 communicates with the input port of the gas heating device 7 , and the output port of the gas heating device 7 communicates with the main gas input port of the spray gun 4 .
在一个实施例中，气体加热装置7包括三级加热器，其中第一级为主加热器，第二级为辅加热器，第三级为保温装置。主加热器、辅加热器和保温装置依次设置。主气供给装置6输出的主气依次通过主加热器、辅加热器和保温装置达到预设的气体温度。达到预设的温度的气体通过管道进入喷枪4的主气输入口。其中三级加热保证了气体升温的效率和稳定性。In one embodiment, the gas heating device 7 includes a three-stage heater, wherein the first stage is a main heater, the second stage is an auxiliary heater, and the third stage is a heat preservation device. The main heater, the auxiliary heater and the heat preservation device are arranged in sequence. The main gas output from the main gas supply device 6 reaches the preset gas temperature through the main heater, the auxiliary heater and the heat preservation device in sequence. The gas reaching the preset temperature enters the main gas input port of the spray gun 4 through the pipeline. The three-stage heating ensures the efficiency and stability of the gas heating.
上述悬浮液冷气动力喷涂***，将粉末材料以液体为介质进行输送，经雾化喷嘴11将悬浮液分散为雾化液滴，并通过加热气体携带粉末液滴进入喷枪4，在拉瓦尔喷枪4中加速后喷向基材，最终在基材表面上堆积以形成涂层。The above-mentioned suspension cold air power spraying system transports the powder material with liquid as the medium, disperses the suspension into atomized droplets through the atomizing nozzle 11, and carries the powder droplets into the spray gun 4 through the heating gas, where the Laval spray gun 4 After moderate acceleration, it is sprayed to the substrate, and finally deposited on the surface of the substrate to form a coating.
在图1所示的实施例中，悬浮液冷气动力喷涂***还包括水冷却装置8，控制装置和水冷却装置8连接，水冷却装置8包括第一水冷回路和第二水冷回路，第一水冷回路与喷枪4的水冷却回路连通，形成第一循环冷却回路。第二水冷回路和气体加热器6的水冷却回路连通，形成第二循环冷却回路。In the embodiment shown in FIG. 1, the suspension cooling air power spraying system further includes a water cooling device 8, the control device is connected to the water cooling device 8, and the water cooling device 8 includes a first water cooling circuit and a second water cooling circuit, the first water cooling The circuit communicates with the water cooling circuit of the spray gun 4 to form a first circulating cooling circuit. The second water cooling circuit communicates with the water cooling circuit of the gas heater 6 to form a second circulating cooling circuit.
在一个实施例中，主加热器、辅加热器和保温装置的外部分别设有水冷却回路，第二水冷回路分别和主加热器的水冷却回路、辅加热器的水冷却回路和保温装置的水冷却回路连通。In one embodiment, a water cooling circuit is provided outside the main heater, the auxiliary heater, and the heat preservation device, respectively, and the second water cooling circuit is respectively connected to the water cooling circuit of the main heater, the water cooling circuit of the auxiliary heater, and the heat preservation device. The water cooling circuit is connected.
水冷却装置8用于水循环冷却悬浮液冷气动力喷涂***中的高温设备，以保障悬浮液冷气动力喷涂***运行的持续稳定性。The water cooling device 8 is used to cool the high temperature equipment in the suspension cold air power spraying system by water circulation, so as to ensure the continuous stability of the operation of the suspension cold air power spraying system.
在图1所示的实施例中，悬浮液冷气动力喷涂***还包括样品台5，样品台5用于固定喷涂基材，喷枪4用于向样品台上固定的基材进行喷涂。样品台5放置于喷枪4枪口前方一定距离。In the embodiment shown in FIG. 1 , the suspension cold air dynamic spraying system further includes a sample stage 5 , the sample stage 5 is used to fix the sprayed substrate, and the spray gun 4 is used to spray the fixed substrate on the sample stage. The sample stage 5 is placed at a certain distance in front of the muzzle of the spray gun 4 .
在一个实施例中，样品台5在垂直喷涂方向的平面上能进行两轴移动。即，样品台5在垂直喷涂方向的平面上能沿该平面坐标系的X轴和Y轴移动。而 喷枪4在机械手5的夹持下可进行空间中的三轴移动与三轴转动。即，喷枪4在机械手5的夹持下可沿地坐标系的X轴、Y轴和Z轴移动与绕自身坐标系的X轴、Y轴和Z轴的转动。从而喷枪4与样品台5可组合实现八自由度下的相对运动，在喷涂时，喷枪4与样品台5能够进行不同方向和距离的转换，以满足不同基材的尺寸轮廓和工艺流程下的工艺需求。In one embodiment, the sample stage 5 is capable of biaxial movement in a plane perpendicular to the spraying direction. That is, the sample stage 5 can move along the X axis and the Y axis of the plane coordinate system on a plane perpendicular to the spraying direction. The spray gun 4 can perform three-axis movement and three-axis rotation in space under the clamping of the manipulator 5. That is, the spray gun 4 can move along the X-axis, Y-axis and Z-axis of the earth coordinate system and rotate around the X-axis, Y-axis and Z-axis of its own coordinate system under the grip of the manipulator 5 . Therefore, the spray gun 4 and the sample stage 5 can be combined to achieve relative motion under eight degrees of freedom. During spraying, the spray gun 4 and the sample stage 5 can be converted in different directions and distances to meet the size contours of different substrates and the process flow. process requirements.
在图1所示的实施例中，悬浮液冷气动力喷涂***还包括除尘装置12，除尘装置12用于收集喷涂后未沉积到基材表面的粉末。In the embodiment shown in FIG. 1 , the suspension cold air dynamic spraying system further includes a dust removal device 12 , and the dust removal device 12 is used to collect powder that is not deposited on the surface of the substrate after spraying.
在一个实施例中，除尘装置12包括两级除尘。具体的，除尘装置12安装于样品台5下方。除尘装置12包括两级除尘器。第一级为重力分离除尘器，第二级为滤筒除尘器。重力分离除尘器和滤筒除尘器依次连接。重力分离除尘器，可利用重力对粒度较大的粉末颗粒完成初次筛除。滤筒除尘器，进一步对更小粒度的粉末颗粒进行二次筛出。两级除尘可以减小粒度较大颗粒对滤筒的冲击，延长滤筒的使用寿命，并能够大致依照粉末粒度对残余粉末颗粒进行回收，保证了喷涂技术环保度的同时也便于粉末颗粒的回收再利用。In one embodiment, the dedusting device 12 includes two stages of dedusting. Specifically, the dust removal device 12 is installed below the sample stage 5 . The dust removal device 12 includes a two-stage dust collector. The first stage is a gravity separation dust collector, and the second stage is a filter cartridge dust collector. The gravity separation dust collector and the filter cartridge dust collector are connected in sequence. Gravity separation dust collector can use gravity to complete the primary screening of powder particles with larger particle size. The filter cartridge dust collector further sieves the powder particles with smaller particle size. Two-stage dust removal can reduce the impact of larger particles on the filter cartridge, prolong the service life of the filter cartridge, and can recover the residual powder particles roughly according to the powder particle size, which ensures the environmental protection of the spraying technology and facilitates the recovery of powder particles. Reuse.
在图1所示的实施例中，控制装置包括控制面板1和控制柜2。控制面板1通过电路与控制柜2连接。控制面板1可以设定工艺参数并实时显示喷涂过程中参数变化情况。控制面板1上的参数设定转化为电信号输入至控制柜2，从而实现与各个装置的通讯连接与控制。具体的，控制装置的工作指令流程可参见图5。机械手3、主气供给装置6、气体加热装置7、水冷却装置8和送液气供给装置9均与控制柜2通过电路实现数据传输与控制。In the embodiment shown in FIG. 1 , the control device includes a control panel 1 and a control cabinet 2 . The control panel 1 is connected with the control cabinet 2 through a circuit. The control panel 1 can set the process parameters and display the parameter changes in the spraying process in real time. The parameter settings on the control panel 1 are converted into electrical signals and input to the control cabinet 2, so as to realize the communication connection and control with each device. Specifically, the work instruction flow of the control device can be seen in FIG. 5 . The manipulator 3 , the main gas supply device 6 , the gas heating device 7 , the water cooling device 8 and the liquid feeding gas supply device 9 all realize data transmission and control with the control cabinet 2 through the circuit.
请同时参考图6，悬浮液冷气动力喷涂***的工作流程如下：首先通过控制面板1设置工艺参数，具体包括主气压力、主气温度、悬浮液送料压力、喷涂轨迹、水冷温度等，设置完成后启动***；然后控制柜2识别命令并分别对 各个装置发出控制信号，各个装置接收信号后随即启动运行；送液气供给装置9启动后开始为悬浮液送料器10加压输送悬浮液，悬浮液经雾化喷嘴11与气体混合雾化为小液滴后进入喷枪4；同时主气供给装置6开始供气，主气经气体加热装置7后达到预设温度也进入喷枪4；雾化液滴和主气都被输送至喷枪4后，机械手3夹持喷枪4以预设喷涂轨迹开始工作，喷涂中水冷却装置8持续对喷枪4、气体加热装置7进行水循环冷却；直至全部喷涂任务完成后所有设备停止工作并处于待机状态。Please refer to Figure 6 at the same time, the working process of the suspension cold air power spraying system is as follows: First, set the process parameters through the control panel 1, including the main air pressure, main air temperature, suspension feeding pressure, spraying trajectory, water cooling temperature, etc., the setting is completed. Then start the system; then the control cabinet 2 recognizes the command and sends control signals to each device respectively, and each device starts operation immediately after receiving the signal; after the liquid gas supply device 9 is started, it starts to pressurize the suspension feeder 10 to transport the suspension, the suspension The liquid is mixed with the gas by the atomizing nozzle 11 and atomized into small droplets and then enters the spray gun 4; at the same time, the main gas supply device 6 starts to supply gas, and the main gas reaches the preset temperature after passing through the gas heating device 7 and also enters the spray gun 4; the atomized liquid After the droplets and the main gas are delivered to the spray gun 4, the manipulator 3 clamps the spray gun 4 to start working with the preset spraying trajectory, and the water cooling device 8 in spraying continues to perform water circulation cooling on the spray gun 4 and the gas heating device 7; until all the spraying tasks are completed. After that all devices stop working and are in standby state.
此外，请参考图7，所述悬浮液冷气动力喷涂***在涂层的制备方法中的应用被阐明，即所述悬浮液冷气动力喷涂***被用于制备纳米涂层的具体步骤被阐明，所述涂层的制备方法具体包括以下步骤：In addition, please refer to FIG. 7, the application of the suspension cold air dynamic spraying system in the coating preparation method is clarified, that is, the specific steps in which the suspension cold air dynamic spraying system is used to prepare the nanocoating layer are clarified, so the The preparation method of the coating specifically comprises the following steps:
S10、将超细粉末制备形成悬浮液。S10, preparing the ultrafine powder to form a suspension.
S10中，粉末可以纳米级粉末，也可以为其他粒径亚微米级粉末。In S10, the powder can be nano-scale powder or other particle size sub-micron-scale powder.
S20、采用所述悬浮液冷气动力喷涂***和采用冷气动力喷涂的方式，将所述悬浮液携带的粉末颗粒喷涂至基材表面，在基材表面形成涂层。S20. Using the suspension cold air power spraying system and the cold air power spraying method, spray the powder particles carried by the suspension onto the surface of the substrate to form a coating on the surface of the substrate.
S20中，采用冷气动力喷涂的方式将所述悬浮液喷涂至基材表面的步骤中，可以采用上文所述的悬浮液冷气动力喷涂***进行冷气动力喷涂。In S20, in the step of spraying the suspension on the surface of the substrate by means of cold air power spraying, the cold air power spraying system can be used for the cold air power spraying.
上述纳米涂层的制备方法，通过将超细粉末颗粒制备形成悬浮液，再通过冷气动力喷涂的方式进行喷涂，有效提高了超细粉末颗粒的流动性，保证了冷喷涂中颗粒较高的沉积效率，提高了涂层的质量。The preparation method of the above-mentioned nano-coating, by preparing ultra-fine powder particles to form a suspension, and then spraying by means of cold air dynamic spraying, the fluidity of the ultra-fine powder particles is effectively improved, and the deposition of higher particles in the cold spraying is guaranteed. efficiency, improving the quality of the coating.
上述悬浮液冷气动力喷涂***具有如下优点：The above-mentioned suspension cold air power spraying system has the following advantages:
(1)利用冷喷涂技术制备纳米涂层，可以结合冷喷涂技术的工艺优势，保证涂层的显微组织结构与原始纳米材料的一致性，避免了材料在喷涂过程中发生改性，从而最大程度保持纳米涂层的高结合强度、低孔隙率等特性。(1) The preparation of nano-coatings by cold spraying technology can combine the technological advantages of cold spraying technology to ensure the consistency of the microstructure of the coating with the original nanomaterials, avoid the modification of materials during the spraying process, and maximize the The high bonding strength and low porosity of the nano-coating can be maintained to a certain extent.
(2)悬浮液冷气动力喷涂***包括悬浮液送料器10与雾化喷嘴11，可通过控制送液气体与雾化气体的压力与流量，调节悬浮液的送料速度与雾化效果，以改善不同纳米材料的喷涂工艺质量。(2) The suspension cold air power spraying system includes a suspension feeder 10 and an atomizing nozzle 11. By controlling the pressure and flow of the liquid feeding gas and the atomizing gas, the feeding speed and atomization effect of the suspension can be adjusted to improve the different Spraying process quality of nanomaterials.
(3)悬浮液冷气动力喷涂***支持八自由度空间位置调节，可以在喷涂时实现喷枪4相对于样品台5的方向和距离的转换，实现多角度、多方位的喷涂，可根据实际喷涂基材的尺寸轮廓选择不同的工艺流程。(3) The suspension cold air dynamic spraying system supports eight-degree-of-freedom spatial position adjustment, which can realize the conversion of the direction and distance of the spray gun 4 relative to the sample stage 5 during spraying, and realize multi-angle and multi-directional spraying. The size profile of the material selects different technological processes.
(4)悬浮液冷气动力喷涂***包括独立的水冷却装置8，能够实时对气体加热装置7以及喷枪4等高温装置进行水循环冷却，提高了长时间喷涂的连续性。(4) The suspension cold air power spraying system includes an independent water cooling device 8, which can perform water circulation cooling on high temperature devices such as the gas heating device 7 and the spray gun 4 in real time, improving the continuity of long-term spraying.
(5)气体加热装置7包括三级气体加热器，提高了喷涂主气加热温度的稳定性，保证了喷涂工艺的稳定性。(5) The gas heating device 7 includes a three-stage gas heater, which improves the stability of the heating temperature of the main gas for spraying and ensures the stability of the spraying process.
(6)除尘装置12包括两级除尘器，能够分粒度对残余粉末颗粒进行回收，保证了喷涂技术环保度的同时也便于粉末颗粒的回收再利用。(6) The dust removal device 12 includes a two-stage dust collector, which can recycle the residual powder particles by particle size, which ensures the environmental protection degree of the spraying technology and facilitates the recycling and reuse of the powder particles.
以上仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the present invention. the scope of protection of the invention.

Claims (17)

  1. 悬浮液冷气动力喷涂***，其特征在于，包括控制装置、喷枪装置、主气供给装置、送液气供给装置以及悬浮液送料器，所述喷枪装置包括喷枪；A suspension cold air power spraying system is characterized in that it includes a control device, a spray gun device, a main gas supply device, a liquid supply gas supply device and a suspension feeder, and the spray gun device includes a spray gun;
    所述主气供给装置和所述喷枪的主气输入口连通；the main gas supply device communicates with the main gas input port of the spray gun;
    所述送液气供给装置和所述悬浮液送料器连通；The liquid-feeding gas supply device is communicated with the suspension feeder;
    所述悬浮液送料器和所述喷枪的液料输入口连通；The suspension feeder is communicated with the liquid material input port of the spray gun;
    所述喷枪装置、所述悬浮液送料器、所述主气供给装置和所述送液气供给装置均分别和所述控制装置连接。The spray gun device, the suspension feeder, the main gas supply device and the liquid supply gas supply device are respectively connected with the control device.
  2. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，所述主气供给装置包括依次连接的液态气存储装置、汽化装置、缓冲装置和调压装置，所述液态气存储装置用于存储液化态气体，所述汽化装置用于将所述液化态气体进行汽化处理，所述缓冲装置用于存储汽化后的高压主气，所述调压装置用于将所述高压主气调节至预设压力并恒压输出。The cold air power spraying system for suspension liquid according to claim 1, wherein the main gas supply device comprises a liquid gas storage device, a vaporization device, a buffer device and a pressure regulating device which are connected in sequence, and the liquid gas storage device uses For storing liquefied gas, the vaporization device is used to vaporize the liquefied gas, the buffer device is used to store the vaporized high-pressure main gas, and the pressure regulating device is used to adjust the high-pressure main gas to preset pressure and constant pressure output.
  3. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，所述主气供给装置为所述喷枪提供主气，所述主气为氮气、氦气和空气中的至少一种。The cold air power spraying system for suspension according to claim 1, wherein the main gas supply device provides main gas for the spray gun, and the main gas is at least one of nitrogen, helium and air.
  4. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，所述喷枪装置还包括机械手，所述喷枪固定在所述机械手上，所述控制装置和所述机械手连接。The cold air power spraying system for suspension liquid according to claim 1, wherein the spray gun device further comprises a manipulator, the spray gun is fixed on the manipulator, and the control device is connected with the manipulator.
  5. 如权利要求4所述的悬浮液冷气动力喷涂***，其特征在于，所述机械手能进行空间三轴移动与三轴转动。The cold air power spraying system for suspension liquid according to claim 4, wherein the manipulator can perform three-axis movement and three-axis rotation in space.
  6. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，所述喷枪包括拉瓦尔喷管和水冷套，所述拉瓦尔喷管上设有所述主气输入口和所述液料输 入口，所述水冷套包裹在所述拉瓦尔喷管的外部。The cold air power spraying system for suspension liquid according to claim 1, wherein the spray gun comprises a Laval nozzle and a water cooling jacket, and the Laval nozzle is provided with the main gas input port and the liquid material Input port, the water cooling jacket wraps the outside of the Laval nozzle.
  7. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，所述悬浮液送料器设有进气管路和出液管路；The suspension cold air power spraying system according to claim 1, wherein the suspension feeder is provided with an air inlet pipeline and a liquid outlet pipeline;
    所述进气管路的一端和所述送液气供给装置连通，所述进气管路的另一端设于所述悬浮液送料器内的悬浮液的液面上方；One end of the air intake pipeline is communicated with the liquid feeding gas supply device, and the other end of the air intake pipeline is arranged above the liquid level of the suspension in the suspension feeder;
    所述出液管路的一端和所述喷枪的液料输入口连通，所述出液管路的另一端设于所述悬浮液送料器内的悬浮液的液面下方。One end of the liquid outlet pipeline is communicated with the liquid material input port of the spray gun, and the other end of the liquid outlet pipeline is arranged below the liquid level of the suspension in the suspension feeder.
  8. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，还包括雾化喷嘴，所述雾化喷嘴设于所述悬浮液送料器和所述喷枪之间，所述雾化喷嘴设有气体进口、液体进口和雾化汽出口，所述气体进口与所述送液气供给装置的气体出口连通，所述液体进口与所述悬浮液送料器的出液管道连通，所述雾化喷嘴的所述雾化汽出口和所述喷枪的所述液料输入口连通。The cold air power spraying system for suspension according to claim 1, further comprising an atomizing nozzle, wherein the atomizing nozzle is arranged between the suspension feeder and the spray gun, and the atomizing nozzle is arranged between the suspension feeder and the spray gun. There are gas inlet, liquid inlet and atomizing steam outlet, the gas inlet is communicated with the gas outlet of the liquid feeding gas supply device, the liquid inlet is communicated with the liquid outlet pipe of the suspension feeder, the atomization The atomizing vapor outlet of the nozzle communicates with the liquid material input port of the spray gun.
  9. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，还包括气体加热装置，所述控制装置和所述气体加热装置连接，所述气体加热装置设于所述主气供给装置和所述喷枪之间，所述主气供给装置的输出口与所述气体加热装置的输入口连通，所述气体加热装置的输出口和所述喷枪的主气输入口连通。The cold air power spraying system for suspension liquid according to claim 1, characterized in that, it further comprises a gas heating device, the control device is connected with the gas heating device, and the gas heating device is provided on the main gas supply device and the main gas supply device and the gas heating device. Between the spray guns, the output port of the main gas supply device communicates with the input port of the gas heating device, and the output port of the gas heating device communicates with the main gas input port of the spray gun.
  10. 如权利要求9所述的悬浮液冷气动力喷涂***，其特征在于，所述气体加热装置包括依次设置的主加热器、辅加热器和保温装置，所述主气供给装置输出的主气依次通过所述主加热器、所述辅加热器和所述保温装置达到预设的气体温度。The cold air power spraying system for suspension liquid according to claim 9, wherein the gas heating device comprises a main heater, an auxiliary heater and a heat preservation device arranged in sequence, and the main gas output from the main gas supply device passes through in sequence The main heater, the auxiliary heater and the temperature keeping device reach a preset gas temperature.
  11. 如权利要求10所述的悬浮液冷气动力喷涂***，其特征在于，还包括水冷却装置，所述控制装置和所述水冷却装置连接，所述水冷却装置包括第一水冷回路和第二水冷回路，所述第一水冷回路与所述喷枪的水冷却回路连通，形成 第一循环冷却回路；The suspension cooling air power spraying system according to claim 10, further comprising a water cooling device, the control device is connected to the water cooling device, and the water cooling device comprises a first water cooling circuit and a second water cooling circuit a circuit, the first water cooling circuit is communicated with the water cooling circuit of the spray gun to form a first circulating cooling circuit;
    所述第二水冷回路和所述气体加热器的水冷却回路连通，形成第二循环冷却回路。The second water cooling circuit is communicated with the water cooling circuit of the gas heater to form a second circulating cooling circuit.
  12. 如权利要求11所述的悬浮液冷气动力喷涂***，其特征在于，所述主加热器、所述辅加热器和所述保温装置的外部分别设有水冷却回路，所述第二水冷回路分别和所述主加热器的水冷却回路、所述辅加热器的水冷却回路和所述保温装置的水冷却回路连通。The cold air power spraying system for suspension liquid according to claim 11, wherein the main heater, the auxiliary heater and the outside of the heat preservation device are respectively provided with water cooling circuits, and the second water cooling circuits are respectively provided with water cooling circuits. It communicates with the water cooling circuit of the main heater, the water cooling circuit of the auxiliary heater and the water cooling circuit of the heat preservation device.
  13. 如权利要求1所述的悬浮液冷气动力喷涂***，其特征在于，还包括样品台，所述样品台用于固定喷涂基材，所述喷枪用于向所述样品台上固定的所述喷涂基材进行喷涂。The cold air power spraying system for suspension according to claim 1, further comprising a sample stage, the sample stage is used for fixing the spraying substrate, and the spray gun is used for spraying the spraying fixed on the sample stage The substrate is sprayed.
  14. 如权利要求13所述的悬浮液冷气动力喷涂***，其特征在于，所述样品台在垂直喷涂方向的平面上能进行两轴移动。The cold air dynamic spraying system of suspension liquid according to claim 13, characterized in that, the sample stage can perform biaxial movement on a plane perpendicular to the spraying direction.
  15. 如权利要求13所述的悬浮液冷气动力喷涂***，其特征在于，还包括除尘装置，所述除尘装置用于收集喷涂后未沉积的粉末。The suspension cold air dynamic spraying system according to claim 13, further comprising a dust removal device, the dust removal device is used to collect the powder that is not deposited after spraying.
  16. 如权利要求15所述的悬浮液冷气动力喷涂***，其特征在于，所述除尘装置包括依次连接的重力分离除尘器和滤筒除尘器。The suspension cold air dynamic spraying system according to claim 15, wherein the dust removal device comprises a gravity separation dust collector and a filter cartridge dust collector connected in sequence.
  17. 如权利要求1-16中任一所述的悬浮液冷气动力喷涂***在涂层的制备方法中的应用，其特征在于，所述涂层的制备方法包括以下步骤：The application of the suspension cold air dynamic spraying system as claimed in any one of claims 1-16 in the preparation method of the coating, wherein the preparation method of the coating comprises the following steps:
    将流动性较差的粉末制备形成悬浮液；The powder with poor flowability is prepared to form a suspension;
    采用所述悬浮液冷气动力喷涂***和采用冷气动力喷涂的方式，将所述悬浮液喷涂至基材表面，在基材表面形成涂层。Using the suspension cold air power spraying system and the cold air power spraying method, the suspension is sprayed on the surface of the substrate to form a coating on the surface of the substrate.
PCT/CN2020/135687 2020-09-15 2020-12-11 Suspension liquid cold gas dynamic spray system and application thereof WO2022057112A1 (en)

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