CN114573410A - Heating device and method for aluminum-nickel energetic material cold spraying gas and powder - Google Patents
Heating device and method for aluminum-nickel energetic material cold spraying gas and powder Download PDFInfo
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- CN114573410A CN114573410A CN202210216071.XA CN202210216071A CN114573410A CN 114573410 A CN114573410 A CN 114573410A CN 202210216071 A CN202210216071 A CN 202210216071A CN 114573410 A CN114573410 A CN 114573410A
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B27/00—Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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Abstract
The invention relates to a device and a method for heating aluminum-nickel energetic material cold spraying gas and powder, wherein the device comprises a compressed gas tank, a main gas path, a powder feeding gas path, a main gas heating furnace, a powder feeding device, a powder heating furnace, a cold spraying working position and a sample processing area; the compressed gas tank is connected with the air inlet ends of a main gas path and a powder feeding gas path, the main gas path is provided with a main gas heating furnace, the powder feeding gas path is provided with a powder feeding device and a powder heating furnace, the air outlet ends of the main gas path and the powder feeding gas path are connected to a cold spraying working position, and a sample processing area is arranged below the cold spraying working position. The invention designs the segmented multidimensional heating, carries out different heating designs on the powder, the main gas and the substrate, and realizes single or multiple segmented or simultaneous segmented heating, thereby completing the high-efficiency preparation of the aluminum-nickel energetic material, being easy to control the temperature, improving the uniformity of the aluminum-nickel energetic material obtained by spraying, and having simple equipment, low manufacturing cost and easy enterprise manufacturing and production.
Description
Technical Field
The invention belongs to the field of material surface spraying, and relates to a device and a method for heating aluminum-nickel energetic material cold spraying gas and powder.
Background
With the wide application of energetic materials, the Al-Ni energetic material becomes an energetic material with great development prospect. In the aspect of preparing the aluminum-nickel energetic material, the cold spraying preparation of the aluminum-nickel energetic material can effectively avoid the heat effect brought by hot working, and the defects of oxidation, decomposition, phase change, grain growth and the like of metal particles in the spraying process are avoided, so that the aluminum-nickel material with better performance is prepared. The problem of low nickel deposition rate exists in the traditional cold spraying processing and preparation process at present. And researches show that if the temperature in the processing process is increased, the deposition rate of the aluminum-nickel mixed powder can be effectively increased. The prior art does not have a sufficiently sophisticated cold spray apparatus and method capable of heating powder and gas.
Disclosure of Invention
Object of the Invention
In order to solve the problem of low nickel deposition rate in the prior art, the invention provides a device and a method for heating aluminum-nickel energetic material cold spraying gas and powder.
Technical scheme
The device for heating the aluminum-nickel energetic material cold spraying gas and powder comprises a compressed gas tank, a main gas path, a powder feeding path, a main gas heating furnace, a powder feeding device, a powder heating furnace, a cold spraying working position and a sample processing area; the compressed gas tank is connected with the air inlet ends of a main gas path and a powder feeding gas path, the main gas path is provided with a main gas heating furnace, the powder feeding gas path is provided with a powder feeding device and a powder heating furnace, the air outlet ends of the main gas path and the powder feeding gas path are connected to a cold spraying working position, and a sample processing area is arranged below the cold spraying working position.
Further, the bottleneck department of compressed gas jar is provided with gas cylinder valve and gas cylinder manometer, and the gas cylinder manometer is provided with gas cylinder manometer valve, and the gas cylinder manometer links to each other through gas cylinder outlet duct and the inlet end that the tee bend pneumatic joint was inserted soon to the gas pitcher, and the gas pitcher inserts the tee bend pneumatic joint soon first end of giving vent to anger and connects main gas circuit, and the gas pitcher inserts the tee bend pneumatic joint soon the second end of giving vent to anger and connects and send the powder gas circuit.
Further, main gas circuit is including the main gas connecting pipe I that is high pressure resistant gas hose, main gas connecting pipe II and main gas connecting pipe III, the first end of giving vent to anger that the gas pitcher inserted tee bend pneumatic connector soon is connected to the inlet end of main gas connecting pipe I, the inlet end of giving vent to anger end connection main gas pressure gauge of main gas connecting pipe I, main gas pressure gauge is equipped with the main gas valve, main gas connecting pipe II is connected to the end of giving vent to anger of main gas pressure gauge, the inlet end of the end of giving vent to anger of main gas connecting pipe II is connected main gas heating furnace through full copper pneumatic pipe connector II, the inlet end of main gas heating furnace's end of giving vent to anger is connected main gas connecting pipe III through full copper pneumatic pipe connector II, the end of giving vent to anger of main gas connecting pipe III passes through trachea screwed joint and links to each other with cold spraying work position.
Further, the powder feeding gas circuit comprises a powder feeding gas circuit connecting pipe I, a powder feeding gas circuit connecting pipe II, a powder feeding gas circuit connecting pipe IV and a powder feeding gas circuit connecting pipe III which are high-pressure-resistant gas hoses, the gas inlet end of the powder feeding gas circuit connecting pipe I is connected with the second gas outlet end of a gas tank quick-plug three-way pneumatic connector, the gas outlet end of the powder feeding gas circuit connecting pipe I is connected with the gas inlet end of a powder feeding gas circuit pressure gauge, the powder feeding gas circuit pressure gauge is provided with a powder feeding gas circuit pressure gauge valve, the gas outlet end of the powder feeding gas circuit pressure gauge is connected with the gas inlet end of a powder feeding gas circuit connecting pipe II, the gas outlet end of the powder feeding gas circuit connecting pipe II is connected with the gas inlet end of a powder feeding cavity of a powder feeding device through a threaded connection connector I, the gas outlet end of the powder feeding cavity of the powder feeding device is connected with the gas inlet end of a powder feeding gas circuit connecting pipe III through a full-copper pneumatic gas pipe connector III, the air outlet end of the powder heating furnace is connected with the air inlet end of a powder feeding air path connecting pipe IV through an all-copper pneumatic air pipe connector IV, and the air outlet end of the powder feeding air path connecting pipe IV is connected with a cold spraying working position through a pneumatic pipe lock nut straight-through connector.
Further, main air heating furnace includes heat preservation protective cover I, heat preservation protective housing I, heat preservation protective cover II and heater strip, heat preservation protective cover I and heat preservation protective cover II are fixed in main air heating furnace's inlet end and the end of giving vent to anger, the heater strip is fixed at the internal week of heat preservation protective housing I through the fixed cover spiral dish cloth of heater strip, the pneumatic pipe connection I of full copper is fixed in on heat preservation protective cover I, pneumatic pipe connection II of full copper is fixed in on heat preservation protective cover II, the inboard of heater strip is provided with main air ventilation copper pipe, main air ventilation copper pipe is spiral structure, main air ventilation copper pipe's both ends are connected with pneumatic pipe connection I of full copper and pneumatic pipe connection II of full copper respectively, main air ventilation copper pipe still has inserted thermocouple I, heater strip and thermocouple electric connection are to temperature control box I.
Further, the powder feeding device comprises a shell of the powder storage tank, the interior of the shell of the powder storage tank is of a necking structure with a wide upper part and a narrow lower part, the upper part of the powder feeding device is provided with the powder storage tank, the lower part of the powder feeding device is provided with a powder feeding cavity, a heat-preservation fixing layer is arranged in the powder storage tank, the heat-preservation fixing layer is provided with a carbon fiber heating wire, the powder storage tank is provided with a powder adding port, the outer end of the powder adding port is provided with a detachable plug, a sealing ring is arranged between the plug and the powder adding port, the upper end of the powder storage tank is provided with a speed reducing motor, the output end of the speed reducing motor is connected with a shaft, the shaft is provided with a stirring paddle in the powder storage tank, the shaft is positioned in the powder feeding device, the necking part is provided with quantitative powder feeding slurry, the lower side of the powder feeding cavity is provided with a rotating motor, the upper end of the rotating motor is connected with the quantitative powder feeding slurry through a coupler, and the speed reducing motor, the rotating motor and the carbon fiber heating wires are both electrically connected to the control terminal.
Furthermore, the powder heating furnace comprises a powder heating furnace heat-insulating protective cover I, a powder heating furnace heat-insulating protective cover II, a heat-insulating protective shell II, an external heating wire and an internal heating wire, wherein the heating furnace heat-insulating protective cover I and the powder heating furnace heat-insulating protective cover II are respectively fixed at the air inlet end and the air outlet end of the heat-insulating protective shell II, the external heating wire is fixed at the inner periphery of the heat-insulating protective shell II through an external heating wire fixing heat-insulating sleeve spiral plate cloth, the internal heating wire is fixed at the inner side of the external heating wire through a fixing support body, a spiral powder feeding and ventilating copper pipe is arranged between the external heating wire and the internal heating wire, an all-copper pneumatic pipe joint III is fixed on the heating furnace heat-insulating protective cover I, an all-copper pneumatic pipe joint IV is fixed on the powder heating furnace heat-insulating protective cover II, and the two ends of the powder feeding and ventilating copper pipe are respectively connected with the all-copper pneumatic pipe joint III and the all-copper pneumatic pipe joint IV, a thermocouple II is also inserted into the internal heating wire, and the internal heating wire, the external heating wire and the thermocouple II are electrically connected to the temperature control box II.
Furthermore, the cold spraying working part comprises a laval spray gun, a powder inlet is formed in one side of the laval spray gun, a pneumatic tube lock nut straight-through connector is fixed to the powder inlet, a gas tube threaded connector is fixed to the upper end of the laval spray gun, a barrel of the laval spray gun is coated with a heating resistance wire, an insulating asbestos layer and a protective shell from inside to outside, and the laval spray gun is electrically connected with the control terminal.
Further, the sample processing area comprises a workbench, a heating copper substrate for placing the sample is arranged on the upper portion of the workbench, a heating rod is arranged in the heating copper substrate, and the heating rod is electrically connected with the temperature controller.
A method of cold spraying using the apparatus for heating powder and cold spraying gas as described, comprising the steps of:
the method comprises the following steps: adding aluminum-nickel alloy powder which is uniformly mixed by ball milling into a powder feeding device, wherein the molar ratio of the aluminum powder to the nickel powder is 1:1 to 1: 6;
step two: starting the powder feeding device to start stirring the aluminum-nickel alloy powder;
step three: fixing a sample in a sample processing area;
step four: heating a main gas heating furnace, a powder feeding device, a cold spraying working part and a sample processing area, and uniformly heating the working parts to a target temperature of 300-700 ℃;
step five: after the temperature at each part is stable, supplying gas to the main gas path and the powder feeding gas path through the compressed gas tank;
step six: and the powder feeding device starts to feed powder to the cold spraying working part to spray the sample on the sample processing area.
Advantages and effects
The invention designs the segmented multidimensional heating, designs different heating on three aspects of powder, main gas and a substrate, and realizes single or multiple time-interval or simultaneous segment heating, thereby completing the high-efficiency preparation of the aluminum-nickel energetic material.
The invention can realize the purpose of heating cold spraying gas and powder, is easy to control the temperature and improve the uniformity of the aluminum-nickel energetic material obtained by spraying, and has the advantages of simple equipment, low manufacturing cost and easy enterprise manufacturing and production.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
FIG. 1 is a schematic view of the overall structure of a device for heating the aluminum nickel energetic material cold spray gas and powder;
FIG. 2 is a schematic view of a main gas heating furnace;
FIG. 3 is a schematic view of a powder heating furnace;
FIG. 4 is a scanning electron microscope organization chart of the energy-containing material of aluminum nickel under 200 times;
FIG. 5 is a 500 times scanning electron microscope organization chart of the AlNiFeAlNe energetic material;
FIG. 6 is a 120 times scanning electron microscopic structural view of the AlNiCaFe energetic material.
Description of the reference numerals: 1. the pneumatic powder feeding device comprises a compressed gas tank, 2 gas cylinder valves, 3 gas cylinder pressure gauge valves, 4 gas cylinder pressure gauges, 5 main gas pressure gauges, 6 main gas pressure gauge valves, 7 gas cylinder gas outlet pipes, 8 gas cylinder quick-insertion three-way pneumatic connectors, 9 powder feeding gas circuit connecting pipes I, 10 main gas connecting pipes I, 11 speed reducing motors, 12 heat insulation fixing layers, 13 powder feeding gas circuit pressure gauge valves, 14 threaded connecting connectors I, 15 powder feeding gas circuit pressure gauges, 16 powder feeding gas circuit connecting pipes II, 17 couplers, 18 rotating motors, 19 quantitative powder feeding slurry, 20 powder feeding ports, 21 plugs, 22 sealing rings, 23 shafts, 24 main gas connecting pipes II, 25 all-copper pneumatic gas pipe connectors I, 26 main gas heating furnaces, 27 all-copper pneumatic gas pipe connectors II, 28 temperature control boxes I, 29 powder heating furnaces, 30 all-copper pneumatic gas pipe connectors IV, 25 all-copper pneumatic gas pipe connectors, 28 temperature control boxes I, 29, 31. All-copper pneumatic air pipe joints III, 32, threaded connection joints II, 33, powder feeding air passage connecting pipes IV, 34, pneumatic pipe lock nut straight-through joints 35, powder inlet ports 36, main air connecting pipes III, 37, air pipe threaded joints 38, Laval spray guns, 39, insulating asbestos layers, 40, protective shells, 41, heating resistance wires, 42, samples, 43 heating rods, 44, heating copper substrates, 45, temperature control boxes II, 46, temperature controllers, 47, workbenches, 48, control terminals, 49, thermocouples I, 50, heating wires, 51, main air ventilation copper pipes, 52, heating wire fixing sleeves, 53, powder feeding air passage connecting pipes III, 54, thermocouples II, 55, external heating wires, 56, powder feeding ventilation copper pipes, 57, internal heating wires, 58, powder heating furnace heat-insulating protective covers I, 59, powder heating furnace heat-insulating protective covers II, 60, heat-insulating protective covers of heat-insulating shells, 61. The powder storage tank comprises a heat preservation protective cover I, a heat preservation protective cover 62, a heat preservation protective shell I, a heat preservation protective cover II, a heat preservation protective cover 64, a stirring paddle in the powder storage tank, a powder feeding device 65, a carbon fiber heating wire 66, a shell of the powder storage tank 67, a fixed support body 68, and a heat preservation sleeve fixed by an external heating wire 69.
Detailed Description
As shown in fig. 1, 2 and 3, the device for heating the gas and powder for cold spraying of the alnico energetic material comprises a compressed gas tank 1, a main gas path, a powder feeding path, a main gas heating furnace 26, a powder feeding device 65, a powder heating furnace 29, a cold spraying working site and a sample processing area; the compressed gas tank 1 is simultaneously connected with the gas inlet ends of a main gas path and a powder feeding gas path, the main gas path is provided with a main gas heating furnace 26, the powder feeding gas path is provided with a powder feeding device 65 and a powder heating furnace 29, the gas outlet ends of the main gas path and the powder feeding gas path are simultaneously connected with a cold spraying working position, and a sample processing area is arranged below the cold spraying working position.
The bottleneck department of compressed gas jar 1 is provided with gas cylinder valve 2 and gas cylinder manometer 4, and gas cylinder manometer 4 is provided with gas cylinder manometer valve 3, and gas cylinder manometer 4 inserts tee bend pneumatic connector 8's inlet end soon through gas cylinder outlet duct 7 and gas pitcher and links to each other, and the gas pitcher inserts tee bend pneumatic connector 8's first end of giving vent to anger soon and connects main gas circuit, and the gas pitcher inserts tee bend pneumatic connector 8's second end of giving vent to anger soon and connects and send the powder gas circuit.
The main gas circuit comprises a main gas connecting pipe I10 which is a high-pressure-resistant gas hose, a main gas connecting pipe II 24 and a main gas connecting pipe III 36, the gas inlet end of the main gas connecting pipe I10 is connected with a first gas outlet end of a gas tank quick-insertion three-way pneumatic connector 8, the gas outlet end of the main gas connecting pipe I10 is connected with the gas inlet end of a main gas pressure gauge 5, the main gas pressure gauge 5 is provided with a main gas valve 6, the gas outlet end of the main gas pressure gauge 5 is connected with the main gas connecting pipe II 24, the gas outlet end of the main gas connecting pipe II 24 is connected with the gas inlet end of a main gas heating furnace 26 through an all-copper pneumatic gas pipe connector I25, the gas outlet end of the main gas heating furnace 26 is connected with the gas inlet end of the main gas connecting pipe III 36 through an all-copper pneumatic pipe connector II 27, and the gas outlet end of the main gas connecting pipe III 36 is connected with a cold spraying working position through a gas pipe threaded connector 37.
The powder feeding gas circuit comprises a powder feeding gas circuit connecting pipe I9, a powder feeding gas circuit connecting pipe II 16, a powder feeding gas circuit connecting pipe IV 33 and a powder feeding gas circuit connecting pipe III 53 which are high-pressure-resistant gas hoses, the gas inlet end of the powder feeding gas circuit connecting pipe I9 is connected with the second gas outlet end of a gas tank quick-plug three-way pneumatic connector 8, the gas outlet end of the powder feeding gas circuit connecting pipe I9 is connected with the gas inlet end of a powder feeding gas circuit pressure gauge 15, the powder feeding gas circuit pressure gauge 15 is provided with a powder feeding gas circuit pressure gauge valve 13, the gas outlet end of the powder feeding gas circuit pressure gauge 15 is connected with the gas inlet end of the powder feeding gas circuit connecting pipe II 16, the gas outlet end of the powder feeding gas circuit connecting pipe II 16 is connected with the gas inlet end of a powder feeding cavity of a powder feeding device 65 through a threaded connector I14, the gas outlet end of the powder feeding cavity of the powder feeding device 65 is connected with the gas inlet end of a powder feeding gas circuit connecting pipe III 53 through a threaded connector II 32, the gas outlet end of the powder feeding gas circuit connecting pipe III 53 is connected with the gas inlet end of a powder heating furnace 29 through an all-copper pneumatic gas pipe connector 31, the air outlet end of the powder heating furnace 29 is connected with the air inlet end of a powder feeding air path connecting pipe IV 33 through an all-copper pneumatic air pipe connector IV 30, and the air outlet end of the powder feeding air path connecting pipe IV 33 is connected with a cold spraying working part through a pneumatic pipe lock nut through connector 34.
Main air heating furnace 26 includes heat preservation protective cover I61, heat preservation protective housing I62, heat preservation protective cover II 63 and heater strip 50, heat preservation protective cover I61 and heat preservation protective cover II 63 are fixed in main air heating furnace 26's inlet end and the end of giving vent to anger, heater strip 50 passes through the fixed cover 52 spiral dish cloth of heater strip and fixes the interior week at heat preservation protective housing I62, the pneumatic pipe connection of full copper I25 is fixed in on heat preservation protective cover I61, the pneumatic pipe connection of full copper II 27 is fixed in on heat preservation protective cover II 63, the inboard of heater strip 50 is provided with main air ventilation copper pipe 51, main air ventilation copper pipe 51 is spiral helicine structure, main air ventilation copper pipe 51's both ends are connected with pneumatic pipe connection of full copper I25 and pneumatic pipe connection of full copper II 27 respectively, thermocouple I49 has still inserted in the main air ventilation copper pipe 51, heater strip 50 and thermocouple 49 electric connection are to temperature control box I28. The main air ventilation copper pipe 51 is a copper pipe, the outer diameter is 3-10mm, the wall thickness is 0.5-1mm, the outer diameter of the spiral integral structure of the main air ventilation copper pipe 51 is 24-150mm, the distance between spiral pipe rings is 0-10mm, and the total length of the main air ventilation copper pipe 51 accounts for 60% -90% of the total length of the main air path; the inner diameter of the main air connecting pipe III 36 is increased by 0.5mm compared with the inner diameter of the main air vent copper pipe 51, so that the stability of the air pressure can be ensured.
The powder feeding device 65 comprises a shell 67 of a powder storage tank, the interior of the shell 67 of the powder storage tank is a necking structure with a wide top and a narrow bottom, the upper part of the powder feeding device 65 is the powder storage tank, the lower part of the powder feeding device 65 is a powder feeding cavity, a heat-preservation fixed layer 12 is arranged in the powder storage tank, the heat-preservation fixed layer 12 is provided with a carbon fiber heating wire 66, the powder storage tank is provided with a powder adding opening 20, the outer end of the powder adding opening 20 is provided with a detachable plug 21, a sealing ring 22 is arranged between the plug 21 and the powder adding opening 20, the upper end of the powder storage tank is provided with a speed reducing motor 11, the output end of the speed reducing motor 11 is connected with a shaft 23, the shaft 23 is provided with a stirring paddle 64 in the powder storage tank, the shaft 23 is positioned in the powder feeding device 65, a quantitative powder feeding slurry 19 is arranged at the necking part, a rotating motor 18 is arranged at the lower side of the powder feeding cavity, the upper end of the rotating motor 18 is connected with the quantitative powder feeding slurry 19 through a coupler 17, the speed reducing motor 11, the rotary motor 18 and the carbon fiber heating wire 66 are both electrically connected to the control terminal 48.
The powder heating furnace 29 comprises a powder heating furnace heat-insulating protective cover I58, a powder heating furnace heat-insulating protective cover II 59, a heat-insulating protective shell II 60, an external heating wire 55 and an internal heating wire 57, the heating furnace heat-insulating protective cover I58 and the powder heating furnace heat-insulating protective cover II 59 are respectively fixed at the air inlet end and the air outlet end of the heat-insulating protective shell II 60, the external heating wire 55 is fixed at the inner periphery of the heat-insulating protective shell II 60 through an external heating wire fixing and heat-insulating sleeve 69 and spiral coil cloth, the internal heating wire 57 is fixed at the inner side of the external heating wire 55 through a fixing support 68, a spiral powder-feeding and ventilating copper pipe 56 is arranged between the external heating wire 55 and the internal heating wire 57, an all-copper pneumatic pipe joint III 31 is fixed on the heating furnace heat-insulating protective cover I58, an all-copper pneumatic pipe joint IV 30 is fixed on the powder heating furnace heat-insulating protective cover II 59, two ends of the powder-feeding and ventilating copper pneumatic pipe joint III 31 and the all-copper pneumatic pipe joint IV 30 are respectively connected, a thermocouple II 54 is also inserted into the inner heating wire 57, and the inner heating wire 57, the outer heating wire 55 and the thermocouple II 54 are electrically connected to the temperature control box II 45. The powder feeding and ventilating copper pipe 56 is a copper pipe, the outer diameter is 3-10mm, the wall thickness is 0.5-1mm, the integral structure outer diameter of the first circle of spiral pipe at the air inlet is 24-150mm, the integral structure outer diameter of each circle of pipe is increased by 5-25%, and the circle distance is 3-15 mm; the total length of the powder feeding vent copper pipe 56 accounts for 50% -85% of the total length of the powder feeding air circuit, and the structure is not easy to cause powder to be blocked in the copper pipe.
The cold spraying working part comprises a Laval spray gun 38, a powder inlet 35 is formed in one side of the Laval spray gun 38, a pneumatic tube lock nut through connector 34 is fixed on the powder inlet 35, a gas tube threaded connector 37 is fixed at the upper end of the Laval spray gun 38, a heating resistance wire 41, an insulating asbestos layer 39 and a protective shell 40 are wrapped on a barrel of the Laval spray gun 38 from inside to outside, and the Laval spray gun 38 is electrically connected with a control terminal 48.
The sample processing area comprises a workbench 47, a heating copper substrate 44 for placing the sample 42 is arranged on the upper part of the workbench 47, a heating rod 43 is arranged in the heating copper substrate 44, and the heating rod 43 is electrically connected with a temperature controller 46.
A method for cold spraying by using the cold spraying gas and powder heating device comprises the following steps:
the method comprises the following steps: adding aluminum-nickel alloy powder which is uniformly mixed by ball milling into a powder feeding device 65, wherein the molar ratio of the aluminum powder to the nickel powder is 1:1 to 1: 6;
step two: starting the powder feeding device 65 to start stirring the aluminum-nickel alloy powder;
step three: fixing the sample 42 in the sample processing area;
step four: heating the main gas heating furnace 26, the powder heating furnace 29, the powder feeding device 65, the cold spraying working part and the sample processing area, and uniformly heating the working parts to a target temperature of 300-700 ℃;
step five: after the temperature at each part is stable, supplying gas to the main gas path and the powder feeding gas path through the compressed gas tank 1;
step six: the powder feeder 65 starts feeding powder to the cold spray work site to perform spray coating of the sample 42 on the sample processing area.
As shown in fig. 4-6, the black part is aluminum, the gray part is nickel, and it can be seen from the figures that the al-ni energetic material prepared by the heating device and the method described in the patent has uniform distribution of al element and ni element, good bonding, clear edge where al element and ni element are in contact, and no al-ni reaction occurs.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that various changes and modifications can be made on the basis of the above description, and all embodiments cannot be exhaustive, and obvious changes and modifications included in the technical solutions of the present invention are within the scope of the present invention.
Claims (10)
1. Gaseous and powder heating device of aluminium nickel energetic material cold spraying, its characterized in that: the device comprises a compressed air tank (1), a main air path, a powder feeding air path, a main air heating furnace (26), a powder feeding device (65), a powder heating furnace (29), a cold spraying working position and a sample processing area; the compressed gas tank (1) is simultaneously connected with the gas inlet ends of a main gas path and a powder feeding gas path, the main gas path is provided with a main gas heating furnace (26), the powder feeding gas path is provided with a powder feeding device (65) and a powder heating furnace (29), the gas outlet ends of the main gas path and the powder feeding gas path are simultaneously connected with a cold spraying working position, and a sample processing area is arranged below the cold spraying working position.
2. The device for heating the aluminum-nickel energetic material cold spraying gas and powder according to claim 1, characterized in that: the gas cylinder pressure gauge (4) is provided with gas cylinder pressure gauge valve (3), and gas cylinder pressure gauge (4) is continuous through gas cylinder outlet duct (7) and the inlet end that the tee bend pneumatic connector (8) was inserted soon to the gas pitcher, and the gas pitcher is inserted soon the first end of giving vent to anger of tee bend pneumatic connector (8) and is connected main gas circuit, and the gas pitcher is inserted soon the second end of giving vent to anger of tee bend pneumatic connector (8) and is connected and send the powder gas circuit.
3. The apparatus of claim 2, wherein the apparatus comprises: the main gas path comprises a main gas connecting pipe I (10) which is a high pressure resistant gas hose, the air inlet end of the main air connecting pipe II (24) and the main air connecting pipe III (36) is connected with the first air outlet end of the fast-inserting three-way pneumatic connector (8) of the air tank, the air outlet end of the main air connecting pipe I (10) is connected with the air inlet end of the main air pressure gauge (5), the main air pressure gauge (5) is provided with a main air valve (6), the air outlet end of the main air pressure gauge (5) is connected with the main air connecting pipe II (24), the air outlet end of the main air connecting pipe II (24) is connected with the air inlet end of the main air heating furnace (26) through the all-copper pneumatic air pipe connector I (25), the air outlet end of the main air heating furnace (26) is connected with the air inlet end of the main air connecting pipe III (36) through the all-copper pneumatic air pipe connector II (27), and the air outlet end of the main air connecting pipe III (36) is connected with a cold spraying working position through an air pipe threaded connector (37).
4. The apparatus of claim 2, wherein the apparatus comprises: the powder feeding gas circuit comprises a powder feeding gas circuit connecting pipe I (9), a powder feeding gas circuit connecting pipe II (16), a powder feeding gas circuit connecting pipe IV (33) and a powder feeding gas circuit connecting pipe III (53) which are high-pressure-resistant gas hoses, the gas inlet end of the powder feeding gas circuit connecting pipe I (9) is connected with the second gas outlet end of a gas tank quick-insertion three-way pneumatic connector (8), the gas outlet end of the powder feeding gas circuit connecting pipe I (9) is connected with the gas inlet end of a powder feeding gas circuit pressure gauge (15), the powder feeding gas circuit pressure gauge (15) is provided with a powder feeding gas circuit pressure gauge valve (13), the gas outlet end of the powder feeding gas circuit pressure gauge (15) is connected with the gas inlet end of the powder feeding gas circuit connecting pipe II (16), the gas outlet end of the powder feeding gas circuit connecting pipe II (16) is connected with the gas inlet end of the powder feeding cavity of the powder feeding device (65) through a threaded connector I (14), the gas outlet end of the powder feeding cavity of the powder feeding device (65) is connected with the gas inlet end of the powder feeding gas circuit connecting pipe (53) through a threaded connector II (32), the air outlet end of the powder feeding air passage connecting pipe III (53) is connected with the air inlet end of the powder heating furnace (29) through an all-copper pneumatic air pipe connector III (31), the air outlet end of the powder heating furnace (29) is connected with the air inlet end of the powder feeding air passage connecting pipe IV (33) through an all-copper pneumatic air pipe connector IV (30), and the air outlet end of the powder feeding air passage connecting pipe IV (33) is connected with a cold spraying working position through a pneumatic pipe lock nut direct-connection connector (34).
5. The apparatus for heating aluminum nickel energetic material cold spraying gas and powder as claimed in claim 1 or 3, wherein: the main air heating furnace (26) comprises a heat-insulating protective cover I (61), a heat-insulating protective casing I (62), a heat-insulating protective cover II (63) and a heating wire (50), the heat-insulating protective cover I (61) and the heat-insulating protective cover II (63) are fixed at the air inlet end and the air outlet end of the main air heating furnace (26), the heating wire (50) is fixed at the inner periphery of the heat-insulating protective casing I (62) through a heating wire fixing sleeve (52) and a spiral coil cloth, an all-copper pneumatic air pipe joint I (25) is fixed on the heat-insulating protective cover I (61), an all-copper pneumatic air pipe joint II (27) is fixed on the heat-insulating protective cover II (63), a main air ventilation copper pipe (51) is arranged on the inner side of the heating wire (50), the main air ventilation copper pipe (51) is of a spiral structure, two ends of the main air ventilation copper pneumatic air pipe (51) are respectively connected with the all-copper pneumatic air pipe joint I (25) and the all-copper pneumatic air pipe joint II (27), a thermocouple I (49) is also inserted into the main air ventilation copper pipe (51), and the heating wire (50) and the thermocouple (49) are electrically connected to the temperature control box I (28).
6. The device for heating the aluminum-nickel energetic material cold spraying gas and powder as claimed in claim 1 or 4, wherein: the powder feeding device (65) comprises a shell (67) of a powder storage tank, the interior of the shell (67) of the powder storage tank is of a necking structure with a wide upper part and a narrow lower part, the upper part of the powder feeding device (65) is provided with the powder storage tank, the lower part of the powder feeding device (65) is provided with a powder feeding cavity, a heat-preservation fixing layer (12) is arranged in the powder storage tank, the heat-preservation fixing layer (12) is provided with a carbon fiber heating wire (66), the powder storage tank is provided with a powder adding opening (20), the outer end of the powder adding opening (20) is provided with a detachable plug (21), a sealing ring (22) is arranged between the plug (21) and the powder adding opening (20), the upper end of the powder storage tank is provided with a speed reducing motor (11), the output end of the speed reducing motor (11) is connected with a shaft (23), the shaft (23) is provided with a stirring paddle (64) in the powder storage tank, the shaft (23) is positioned in the powder feeding device (65), the necking part is provided with quantitative powder feeding slurry (19), the lower side of the powder feeding cavity is provided with a rotating motor (18), the upper end of the rotating motor (18) is connected with the quantitative powder feeding slurry (19) through a coupler (17), and the speed reducing motor (11), the rotating motor (18) and the carbon fiber heating wire (66) are electrically connected to the control terminal (48).
7. The device for heating the aluminum-nickel energetic material cold spraying gas and powder as claimed in claim 1 or 4, wherein: the powder heating furnace (29) comprises a powder heating furnace heat-insulating protective cover I (58), a powder heating furnace heat-insulating protective cover II (59), a heat-insulating protective shell II (60), an external heating wire (55) and an internal heating wire (57), wherein the heating furnace heat-insulating protective cover I (58) and the powder heating furnace heat-insulating protective cover II (59) are respectively fixed at the air inlet end and the air outlet end of the heat-insulating protective shell II (60), the external heating wire (55) is fixed at the inner periphery of the heat-insulating protective shell II (60) through an external heating wire fixing heat-insulating sleeve (69) and spiral coil cloth, the inner side of the external heating wire (55) is fixed with the internal heating wire (57) through a fixing support body (68), a spiral powder-feeding and ventilating copper pipe (56) is arranged between the external heating wire (55) and the internal heating wire (57), and an all-copper pneumatic air pipe joint III (31) is fixed on the heating furnace heat-insulating protective cover I (58), the all-copper pneumatic air pipe joint IV (30) is fixed on the heat-preservation protective cover II (59) of the powder heating furnace, two ends of the powder feeding and ventilating copper pipe (56) are respectively connected with the all-copper pneumatic air pipe joint III (31) and the all-copper pneumatic air pipe joint IV (30), a thermocouple II (54) is further inserted into the internal heating wire (57), and the internal heating wire (57), the external heating wire (55) and the thermocouple II (54) are electrically connected to the temperature control box II (45).
8. The apparatus of claim 1, wherein the apparatus comprises: the cold spraying working position comprises a Laval spray gun (38), a powder inlet (35) is formed in one side of the Laval spray gun (38), a pneumatic tube lock nut through connector (34) is fixed to the powder inlet (35), a gas tube threaded connector (37) is fixed to the upper end of the Laval spray gun (38), a heating resistance wire (41), an insulating asbestos layer (39) and a protective shell (40) are wrapped on a barrel of the Laval spray gun (38) from inside to outside, and the Laval spray gun (38) is electrically connected with a control terminal (48).
9. The apparatus of claim 1, wherein the apparatus comprises: the sample processing area comprises a workbench (47), a heating copper substrate (44) used for placing the sample (42) is arranged on the upper portion of the workbench (47), a heating rod (43) is arranged in the heating copper substrate (44), and the heating rod (43) is electrically connected with a temperature controller (46).
10. A method of cold spraying using the device for heating powder and cold spraying gas according to claim 1, characterized in that: the method comprises the following steps:
the method comprises the following steps: adding aluminum-nickel alloy powder which is uniformly mixed by ball milling into a powder feeding device (65), wherein the molar ratio of the aluminum powder to the nickel powder is 1:1 to 1: 6;
step two: starting a powder feeding device (65) to start stirring the aluminum-nickel alloy powder;
step three: fixing a sample (42) in a sample processing area;
step four: heating a main air heating furnace (26), a powder heating furnace (29), a powder feeding device (65), a cold spraying working part and a sample processing area, and uniformly heating the working parts to a target temperature of 300-700 ℃;
step five: after the temperature of each part is stable, the compressed air tank (1) supplies air to the main air path and the powder feeding air path;
step six: the powder feeding device (65) starts feeding powder to the cold spraying working position to spray the sample (42) on the sample processing area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210216071.XA CN114573410B (en) | 2022-03-07 | 2022-03-07 | Device and method for heating cold spraying gas and powder of aluminum-nickel energetic material |
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| CN202210216071.XA CN114573410B (en) | 2022-03-07 | 2022-03-07 | Device and method for heating cold spraying gas and powder of aluminum-nickel energetic material |
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| US20030232132A1 (en) * | 2002-06-17 | 2003-12-18 | Sulzer Metco (Us) Inc. | Method and apparatus for low pressure cold spraying |
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| CN111170814A (en) * | 2020-01-15 | 2020-05-19 | 中北大学 | CL-20-based energetic film spraying material and micro-spraying direct-writing forming method |
| CN111992715A (en) * | 2020-08-21 | 2020-11-27 | 浙江工业大学 | Laser-induced interface in-situ reaction enhanced titanium alloy additive manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030232132A1 (en) * | 2002-06-17 | 2003-12-18 | Sulzer Metco (Us) Inc. | Method and apparatus for low pressure cold spraying |
| JP2014177331A (en) * | 2013-03-14 | 2014-09-25 | Ricoh Co Ltd | Powder throw-in system |
| CN108188401A (en) * | 2018-03-22 | 2018-06-22 | 顺德职业技术学院 | High-frequency induction heating assists cold spraying deposited metal 3D printing method and apparatus |
| CN108247043A (en) * | 2018-03-22 | 2018-07-06 | 顺德职业技术学院 | The cold spraying deposited metal 3D printing method and apparatus of fusible removal support |
| CN111170814A (en) * | 2020-01-15 | 2020-05-19 | 中北大学 | CL-20-based energetic film spraying material and micro-spraying direct-writing forming method |
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