CN111618308B - Composite powder preparation equipment for supersonic laser deposition - Google Patents
Composite powder preparation equipment for supersonic laser deposition Download PDFInfo
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- CN111618308B CN111618308B CN202010589153.XA CN202010589153A CN111618308B CN 111618308 B CN111618308 B CN 111618308B CN 202010589153 A CN202010589153 A CN 202010589153A CN 111618308 B CN111618308 B CN 111618308B
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- 239000000843 powder Substances 0.000 title claims abstract description 324
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 230000008021 deposition Effects 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000012216 screening Methods 0.000 claims abstract description 127
- 238000000498 ball milling Methods 0.000 claims abstract description 57
- 238000003756 stirring Methods 0.000 claims abstract description 47
- 238000007873 sieving Methods 0.000 claims abstract description 33
- 238000000227 grinding Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 24
- 239000011324 bead Substances 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000010288 cold spraying Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007780 powder milling Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crushing And Grinding (AREA)
Abstract
A composite powder preparation apparatus for supersonic laser deposition, comprising: the ball milling device comprises a base, a ball milling box and a stirring mechanism, wherein the ball milling box is arranged at the top of the base; the powder sieving device is arranged in the middle of the base and positioned at the bottom of a powder falling port of the ball milling device, and comprises a powder sieving shell, a vibrating sieving part and a powder discharging control part; the vibration screening part is arranged in the powder screening shell; the powder discharging control part is arranged below the vibrating screen part; the powder returning device comprises a box bottom cover moving mechanism and a screening device lifting device, wherein the box bottom cover moving mechanism is arranged at the upper part of the base and comprises a horizontal driving mechanism and a box bottom cover; and the powder storage device is arranged at the lower part of the base and is used for receiving and storing the powder falling from the powder outlet of the powder sieving device. The invention has the beneficial effects that: at least one or more grinding balls of different shapes or sizes can be placed; the grinding efficiency is improved; the grinding is circularly carried out, the working procedures of manual screening are reduced, and the working efficiency is improved.
Description
Technical Field
The invention relates to composite powder preparation equipment for supersonic laser deposition, and belongs to the field of powder processing.
Background
With the strict implementation of the national environmental protection policy, some traditional high-pollution surface treatment technologies (such as hard chromium plating) face the obsolete situation. Therefore, it is necessary to develop a novel energy-saving, efficient and environment-friendly surface treatment technology to replace the conventional method, and to realize the update of the technology to meet the strategy of national sustainable development.
The supersonic laser deposition technology is a new material surface treatment technology developed in recent years, and is to synchronously introduce laser irradiation to soften deposited material and matrix material in the cold spraying process, so as to improve the quality and performance of the surface modified layer. The technology does not involve the use of chemical liquid, is a relatively environment-friendly method, is a relatively energy-saving process because the technology does not involve the melting process of materials, and can avoid the thermally-induced adverse effects (such as oxidization, phase change, workpiece deformation and the like) existing in high-heat input surface treatment technologies such as laser cladding, thermal spraying and the like. Because laser heating is introduced in the cold spraying process, the range of the material which can be processed by the cold spraying technology is widened, and some high-strength and high-hardness materials (such as Ni60, stellite-6 and the like) can be deposited, so that the method provides possibility for replacing the hard chromium plating technology in the field of improving the surface abrasion resistance of the material.
However, when preparing materials such as Cu and Al, the supersonic laser deposition is often required to add reinforcing phases such as carbon nanotubes and graphene to improve the mechanical properties of the materials so as to prepare composite materials with better properties. However, in the preparation of the composite powder, the ball milling is usually carried out for a few hours by a common ball mill, so that the mixing effect is achieved, the fluidity, the particle size and the like of the powder are not strictly controlled, the supersonic laser deposition has higher requirements on the particle size and the fluidity of the powder, and the smaller particle size and the better fluidity of the powder can improve the deposition rate and the porosity of the powder and the mechanical property of the material.
Disclosure of Invention
Aiming at the requirement of supersonic laser deposition on composite powder, the invention aims to provide a composite powder preparation device for supersonic laser deposition, which can meet the requirements of particle size and fluidity of the powder in the preparation process of the composite powder without manual operation and simple steps. And the non-conforming powder is circularly ball-milled, so that the powder utilization rate is improved.
The invention relates to a composite powder preparation device for supersonic laser deposition, which is characterized by comprising:
The ball milling device comprises a base, a ball milling box and a stirring mechanism, wherein the ball milling box is arranged at the top of the base, and the upper part of the ball milling box is provided with a feed inlet and a vent which can be communicated with the internal mixing cavity and is used for feeding materials into the mixing cavity and introducing protective gas; the bottom of the ball grinding box is provided with a powder falling port which can be communicated with the mixing cavity and is used for discharging substances in the mixing cavity into the screening device; the stirring end of the stirring mechanism extends into the mixing cavity of the ball mill from the top of the ball mill and is used for mixing substances in the mixing cavity;
The powder screening device is arranged in the middle of the base and positioned at the bottom of a powder falling port of the ball milling device, and comprises a powder screening shell, a vibrating screening part and a powder discharging control part, wherein a gap is reserved between the upper part of the powder screening shell and the powder falling port of the ball milling device; the vibrating screen part is arranged in the powder screening shell, the top of the vibrating screen part is provided with a powder inlet hole, and the bottom of the vibrating screen part is provided with a powder outlet hole, and is used for screening substances falling on the vibrating screen part to obtain powder with required particle size; the powder discharge control part is arranged below the vibrating sieving part and comprises a rotary driving motor, a first lifting mechanism and a blocking piece, wherein an output shaft of the rotary driving motor is connected with the mounting plate and is used for driving the mounting plate to drive the vibrating sieving part to rotate; the first lifting mechanism is fixedly arranged above the mounting plate, and the lifting end of the first lifting mechanism is connected with the vibration screening part through the second bearing; the blocking piece is fixedly arranged outside the second bearing and is tightly adhered to the powder outlet hole of the vibrating screen part, a notch for exposing the powder outlet hole of the vibrating screen part is arranged on the blocking piece, and the powder outlet of the powder screening device is controlled by adjusting the relative position of the blocking piece and the powder outlet hole;
The powder returning device comprises a box bottom cover moving mechanism and a screening device lifting device, wherein the box bottom cover moving mechanism is arranged on the upper part of the base and comprises a horizontal driving mechanism and a box bottom cover, and a horizontal telescopic end of the horizontal driving mechanism is fixedly connected with the box bottom cover and is used for driving the box bottom cover to horizontally slide; the bottom cover of the box body is arranged below the powder falling opening and is tightly attached to the bottom of the ball grinding box and used for being inserted into the gap between the powder sieving shell and the powder falling opening so as to control the opening and closing of the powder falling opening; the screening device lifting device is arranged at the lower part of the base and comprises at least one second lifting mechanism, and the lifting end of the second lifting mechanism is fixedly connected with the vibrating screening part of the powder screening device and is used for driving the vibrating screening part to lift so as to control whether the vibrating screening part extends into the inner cavity of the ball grinding box from the powder falling port;
And the powder storage device is arranged at the lower part of the base and is positioned right below the powder outlet hole of the powder screening device, and comprises a powder screening box body and a powder collecting box, wherein the powder collecting box is arranged inside the powder screening box body and is used for receiving and storing powder falling from the powder outlet hole of the powder screening device.
The ball mill comprises a ball mill body and a box upper cover, wherein the upper part of the ball mill body is detachably provided with the box upper cover, the bottom of the ball mill body is provided with a powder falling port, and the inner edge of the ball mill body is provided with a powder falling groove for collecting substances recovered from a powder screening device; the upper cover of the box body is provided with a powder feeding port, a mounting hole and a vent, and the powder feeding port is matched with a feed port sealing cover.
The stirring mechanism comprises a stirring motor, a stirring shaft and a belt, wherein the stirring shaft is arranged in the inner cavity of the ball milling box body and is connected with the upper cover of the box body through a first bearing; the output shaft of the stirring motor and the upper part of the stirring shaft are respectively provided with a belt pulley, and the two belt pulleys are connected with each other through a belt and used for realizing power transmission between the stirring motor and the stirring shaft.
The base from the top down divide into three installation district, be ball-milling case installation district, sieve powder device installation district and powder storage device installation district respectively, wherein sieve powder device installation district dismantlement formula installation screening plant closing cap, powder storage device installation district dismantlement formula installation powder apotheca and screening box.
The vibration screening part comprises a powder bead screening device, a powder particle size screening device and a fluidity screening device, wherein the powder bead screening device, the powder particle size screening device and the fluidity screening device are sequentially stacked from top to bottom, and the pore diameters of the powder bead screening device, the powder particle size screening device and the fluidity screening device are gradually reduced.
The blocking piece is a butterfly piece.
The horizontal driving mechanism, the first lifting mechanism and the second lifting mechanism are all hydraulic cylinders.
The powder collecting box is provided with a powder feeding port which can be communicated with a powder feeder pipeline and is used for conveying powder in the powder collecting box into the powder feeder.
At least one grinding ball is placed in the ball milling box body.
The vibrating screen section also includes a vibrating device.
The invention has the following beneficial effects: the ball mill housing may house at least one or more different shaped or sized grinding balls. Ball-milling beads collide and rub with the materials mutually, so that the grinding efficiency of the materials can be improved more fully. Through the cooperation of box bottom mobile device and screening powder device for ball-milled powder passes through multistage screening and accords with particle diameter and flowable composite powder, and nonconforming powder and ball-milling pearl send back to ball mill box through the powder return device and continue the ball-milling, so the circulation grinds, has reduced the process of manual screening, has improved work efficiency.
Drawings
FIG. 1a is a schematic diagram of a composite powder production apparatus for supersonic laser deposition according to the present invention;
FIG. 1b is an assembly schematic of a composite powder production apparatus for supersonic laser deposition according to the present invention;
FIG. 1c is an assembly view of a cover of a ball mill according to the present invention;
FIG. 1d is an assembly view of the bottom cover and the powder return, screening device and screening box according to the present invention;
FIG. 2a is a schematic view of a powder return device and a powder screening device according to the present invention;
FIG. 2b is a schematic diagram of the powder sieving apparatus according to the present invention;
FIGS. 2c and 2d are schematic views showing the assembly of the powder sieving device and the powder returning device according to the present invention;
FIGS. 3a and 3b are schematic views showing the opening of the bottom cover of the ball mill case according to the present invention;
Fig. 4a, fig. 4b and fig. 4c are schematic diagrams of powder return of the powder return device according to the present invention;
FIGS. 5a and 5b are schematic views showing a powder flowability screening apparatus according to the present invention;
FIGS. 6a, 6b and 6c are schematic views of a powder and ball mill housing according to the present invention;
FIG. 7 is a schematic view of the powder and ball-milling beads of the present invention flowing into the bottom cover of the housing.
Detailed Description
The invention is further described below with reference to the drawings.
Referring to the drawings:
Example 1a composite powder preparation apparatus for supersonic laser deposition according to the invention is characterized by comprising:
The ball milling device comprises a base 29, a ball milling box and a stirring mechanism, wherein the ball milling box is arranged at the top of the base 29, and the upper part of the ball milling box is provided with a feed inlet 17 and a vent 13 which can be communicated with the internal mixing cavity and is used for feeding materials into the mixing cavity and introducing protective gas; the bottom of the ball grinding box is provided with a powder falling port which can be communicated with the mixing cavity and is used for discharging substances in the mixing cavity into the screening device; the stirring end of the stirring mechanism extends into the mixing cavity of the ball mill from the top of the ball mill and is used for mixing substances in the mixing cavity;
The powder screening device is arranged in the middle of the base 29 and positioned at the bottom of a powder falling port of the ball milling device, and comprises a powder screening shell 10, a vibrating screening part and a powder discharging control part, wherein a gap is reserved between the upper part of the powder screening shell and the powder falling port of the ball milling device; the vibrating screen part is arranged in the powder screening shell, the top of the vibrating screen part is provided with a powder inlet hole, and the bottom of the vibrating screen part is provided with a powder outlet hole, and is used for screening substances falling on the vibrating screen part to obtain powder with required particle size; the powder discharge control part is arranged below the vibrating sieving part and comprises a rotary driving motor 20, a first lifting mechanism 21 and a blocking piece 30, wherein an output shaft of the rotary driving motor 20 is connected with a mounting disc 31 and is used for driving the mounting disc to drive the vibrating sieving part to rotate; the first lifting mechanism 21 is fixedly arranged above the mounting plate 31, and the lifting end of the first lifting mechanism 21 is connected with the vibration screening part through the second bearing 28; the blocking piece 30 is fixedly arranged outside the second bearing 28 and is tightly adhered to the powder outlet hole of the vibrating screen part, a notch for exposing the powder outlet hole of the vibrating screen part is arranged on the blocking piece 30, and the powder outlet of the powder screening device is controlled by adjusting the relative position of the blocking piece and the powder outlet hole;
The powder returning device comprises a box bottom cover moving mechanism and a screening device lifting device, wherein the box bottom cover moving mechanism is arranged on the upper part of the base 29 and comprises a horizontal driving mechanism 5 and a box bottom cover 11, and the horizontal telescopic end of the horizontal driving mechanism 5 is fixedly connected with the box bottom cover 11 and is used for driving the box bottom cover 11 to horizontally slide along the surface of the base; the bottom cover 11 of the box body is arranged below the powder falling port and is tightly attached to the bottom of the ball grinding box, and the opening and closing of the powder falling port are controlled by adjusting the position of the gap between the powder sieving shell and the powder falling port; the screening device lifting device is arranged at the lower part of the base 29 and comprises at least one second lifting mechanism 19, and the lifting end of the second lifting mechanism 19 is fixedly connected with the vibrating screen part of the powder screening device and is used for driving the vibrating screen part to lift so as to control whether the vibrating screen part extends into the inner cavity of the ball grinding box from the powder falling port;
and a powder storage device arranged at the lower part of the base 29 and positioned right below the powder outlet hole of the powder sieving device, and comprising a powder sieving box body 8 and a powder collecting box 18, wherein the powder collecting box 18 is arranged inside the powder sieving box body 8 and is used for receiving and storing powder falling from the powder outlet hole of the powder sieving device.
The ball mill comprises a ball mill box body 4 and a box body upper cover 3, wherein the box body upper cover 3 is detachably arranged on the upper part of the ball mill box body 4, a powder falling port is arranged at the bottom of the ball mill box body 4, and a powder falling groove 32 is arranged at the inner edge of the ball mill box body 4 and used for collecting substances recovered from a powder screening device; the upper cover 3 of the box body is provided with a powder feeding port 17, a mounting hole and a vent hole 13, and the powder feeding port is assembled with a feed port sealing cover 16.
The stirring mechanism comprises a stirring motor 1, a stirring shaft 12 and a belt 2, wherein the stirring shaft 12 is arranged in the inner cavity of the ball mill box body 4 and is connected with the box body upper cover 3 through a first bearing 14; the output shaft of the stirring motor 1 and the upper part of the stirring shaft 12 are respectively provided with a belt pulley, and the two belt pulleys are connected with each other through a belt 2, so that power transmission between the stirring motor 1 and the stirring shaft 12 is realized.
The base 29 is divided into three installation areas from top to bottom, namely a ball mill box installation area, a powder screening device installation area and a powder storage device installation area, wherein the powder screening device installation area is detachably provided with a screening device sealing cover 6, and the powder storage device installation area is detachably provided with a powder storage chamber sealing cover 7 and a screening box body 8.
The vibration screening part comprises a powder bead screening device 24, a powder particle size screening device 25 and a fluidity screening device 26, wherein the powder bead screening device 24, the powder particle size screening device 25 and the fluidity screening device 26 are sequentially stacked from top to bottom, and the pore diameters of the powder bead screening device 24, the powder particle size screening device 25 and the fluidity screening device 26 are gradually reduced.
The blocking piece 30 is a butterfly piece.
The horizontal driving mechanism 5, the first lifting mechanism 21 and the second lifting mechanism 19 are all hydraulic cylinders.
The powder collecting box 18 is provided with a powder feeding port which can be communicated with a powder feeder pipeline and is used for conveying powder in the powder collecting box into the powder feeder.
At least one grinding ball is placed in the ball grinding box body 4.
The vibrating screen section also includes a vibrating device.
Embodiment 2 the composite powder preparation device for supersonic laser deposition comprises a ball milling device, a powder sieving device, a powder returning device and a powder storing device, wherein the ball milling device comprises a ball milling box body 4, a box upper cover 3, a base 29, a stirring motor 1, a stirring shaft 12 and a belt 2, and the box upper cover 3 is connected with the stirring shaft 12 through a first bearing 14. The stirring motor 1 drives the stirring shaft 12 to rotate through the belt 2 so as to realize powder ball milling stirring;
The powder sieving device comprises a powder sieving shell 10, a powder bead sieving device 24, a powder particle size sieving device 23, a fluidity sieving device 22, a first lifting mechanism 21, a rotary driving motor 20 and a blocking piece 30;
The powder returning device comprises a box bottom cover moving device and a screen cloth moving device, wherein the box bottom cover moving device comprises a box bottom cover 11 and a horizontal driving mechanism 5, and the screen cloth moving device comprises at least one set of second lifting mechanism 19.
The box bottom cover 11 is tightly matched with the bottom of the ball milling box body 4, the box bottom cover 11 can be tightly connected with the ball milling box body 4 in a sliding manner, and the box bottom cover 11 can be only in sliding fit, but the tightness between the box bottom cover 11 and the ball milling box body 4 is ensured; the horizontal driving mechanism 5 is a hydraulic cylinder which is horizontally arranged, powder flows out of screening through controlling the horizontal movement of the bottom cover 11 of the box body, flows into the powder screening device, ball-milling beads are separated through a first sieve hole 25 on the bead powder screening device 24, powder which does not accord with the particle size is separated through a second sieve hole 26 on the powder particle size screening device 23, and powder which accords with the flowability is screened through the flowability screening device 22.
The powder return device can enable ball milling beads and non-conforming powder to be automatically returned to the ball milling box 4 for continuous ball milling until conforming to the requirements.
The upper cover 3 of the box body is provided with two openings, one is a powder feeding opening 17, and a feed opening sealing cover 16 can be screwed on by a first nut 15 for sealing; the other is a vent 13 for shielding gas.
The ball mill box 4 lower part is cavity, and during the powder ball-milling, box bottom 11 seals the powder mouth that falls of lower part, after the ball-milling, box bottom mobile device's horizontal drive motor shrink drives box bottom 11 and takes out from the clearance between the upper portion of sieve powder shell and the powder mouth that falls of ball-milling device for the powder mouth that falls opens, powder in the ball-milling box and grinding pearl flow out from the powder mouth and enter into the below sieve powder device.
The powder returning device is driven by the second lifting mechanism 19, the interior of the powder sieving shell 10 is attached to the powder sieving device, and when the first lifting mechanism 21 is started, powder moves upwards into the ball grinding box body 4 along with the powder sieving device.
At least one grinding ball can be placed in the ball grinding box body 4.
The vibrating device and the flow velocity detection device are arranged on the powder sieving mechanism, so that the composite powder can be conveniently sieved.
The device further comprises a powder collection box 18 connected to the outlet of the sifting box 8.
The screening box body 8 can be opened, after ball milling is finished, the second nut 9 can be unscrewed, and the screening chamber sealing cover 6 can be opened to take out or replace the screens with different particle sizes. Opening the powder storage chamber cover 7 allows the powder in the powder collection box 18 to be removed and cleaned.
The fluidity powder screening device 22 is connected with the rotation driving motor 20, when the fluidity of the powder is accordant, the rotation driving motor 20 rotates, and the fluidity powder screening device 22 and the butterfly-shaped blocking piece are shifted in position, so that the powder outlet 27 at the bottom of the fluidity powder screening device 22 is exposed, and the powder meeting the particle size requirement in the fluidity powder screening device 22 flows into the powder collecting box 18 from the powder outlet 27.
The powder collection box 18 may be connected to a powder feeder to directly feed the prepared composite powder to the powder feeder for further testing.
Example 3 fig. 1a, 1b, 1c, 1d are schematic structural diagrams of a composite powder preparation apparatus for supersonic laser deposition according to the present invention.
The ball mill box body 4 is respectively sealed by a box body upper cover 3 and a box body bottom cover 11. At least one grinding ball is arranged in the ball grinding box body 4, and can be two or more grinding balls with different shapes or sizes, and the combination between the powder and the reinforcing body substances can be improved through mutual collision and friction between the grinding balls with different sizes or shapes and the powder in the box body 4, so that the generation rate of the composite powder is improved.
The upper cover 3 of the box body is connected with the stirring shaft 12 through a first bearing 14, the stirring shaft 12 is connected with the stirring motor 1 through a belt 2, and the stirring motor 1 drives the stirring shaft 12 to rotate. The upper cover 3 of the box body is respectively provided with a feed port 17 and a vent port 13. The feed opening 17 is closed off in operation by a feed opening cover 16 by means of a first nut 15.
The bottom cover 11 of the box body is connected with the horizontal driving mechanism 5. The horizontal driving mechanism 5 is contracted to drive the bottom cover 11 of the box body to move leftwards so as to open the ball mill box body, and as shown in fig. 3a and 3b, the powder after ball milling can flow out to the next device. The powder screening device installation area and the powder storage device installation area of the base are provided with a powder screening device, a powder returning device and a powder storage device.
The powder sieving box body 8 can be opened, after ball milling is finished, the second nut 9 can be unscrewed, the sieve with different particle sizes can be taken out or replaced by opening the powder sieving chamber sealing cover 6, and powder in the powder collecting disc 18 can be taken out and cleaned by opening the powder storing chamber sealing cover 7.
The bottom cover 11 of the box body is controlled to move through the horizontal driving mechanism 5, the bottom of the box body is opened, and powder flows out from the lower end of the box body and enters the powder sieving box body 8, as shown in fig. 3a and 3 b. Powder passes through the powder bead screening device 24, the powder particle size screening device 23 and the fluidity detection device 22 respectively, and the powder screening device has a vibration effect, so that powder screening is more convenient. The bead screening device 24 has a large diameter first screen aperture 25 for screening out ball-milled beads and powder. The ball-milling beads are left on the bead screening device 24, the powder enters the next powder particle size screening device 23, a second sieve hole 26 with a small diameter is formed in the powder particle size screening device 23 and is used for sieving out the powder with a specified particle size, the powder with a large particle size is left on the powder particle size screening device 23, the powder with a small particle size enters the flowability detection device 22, and when the powder flowability is qualified, the powder enters the powder collecting device 18 through the sieve hole 27, so that the powder is stored, as shown in fig. 2a, 2b, 2c and 2 d.
The powder collection tray 18 may be connected to a powder feeder and fed directly into the powder feeder for supersonic laser deposition experiments after composite powder is produced. When the powder fluidity is not acceptable, the rotary driving motor 20 is started to rotate the first lifting cylinder 21, and the powder outlet 27 of the fluidity detecting device 22 is closed, as shown in fig. 5a and 5 b.
When the powder in the powder screening box 8 is screened, the powder and ball-milling beads which are not well ball-milled need to be sent back to the ball-milling box 4 for ball-milling again, at this time, the box bottom cover 11 is opened through the horizontal driving mechanism 5, and then the powder returning device is pushed to rise into the box 4 through the second lifting mechanism 19 and the first lifting mechanism 21, as shown in fig. 4a, 4b and 4 c. The powder and beads on the powder screening device can fall into a powder falling groove at the edge of the ball grinding box body 4 from the screen under the vibration of the screen and the blowing force of the through shielding gas, as shown in fig. 6 a. The second lifting mechanism 19 and the first lifting mechanism 21 are then contracted, so that the powder returning device descends, and the horizontal driving mechanism 5 is started to push the bottom cover 11 of the box body to seal the lower port of the ball grinding box body 4. As shown in fig. 6b, 6 c. Then, the stirring motor 1 is started to drive the stirring shaft 12 to rotate, so that powder can be sent to the bottom cover of the box body from the powder falling groove at the edge of the ball milling box body 4, and the ball milling is continued, as shown in fig. 7.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, but also equivalent technical means that can be conceived by those skilled in the art according to the inventive concept.
Claims (8)
1. A composite powder preparation apparatus for supersonic laser deposition, comprising:
The ball milling device comprises a base, a ball milling box and a stirring mechanism, wherein the ball milling box is arranged at the top of the base, and the upper part of the ball milling box is provided with a feed inlet and a vent which can be communicated with the internal mixing cavity and is used for feeding materials into the mixing cavity and introducing protective gas; the bottom of the ball grinding box is provided with a powder falling port which can be communicated with the mixing cavity and is used for discharging substances in the mixing cavity into the powder screening device; the stirring end of the stirring mechanism extends into the mixing cavity of the ball mill from the top of the ball mill and is used for mixing substances in the mixing cavity;
The powder screening device is arranged in the middle of the base and positioned at the bottom of a powder falling port of the ball milling device, and comprises a powder screening shell, a vibrating screening part and a powder discharging control part, wherein a gap is reserved between the upper part of the powder screening shell and the powder falling port of the ball milling device; the vibrating screen part is arranged in the powder screening shell, the top of the vibrating screen part is provided with a powder inlet hole, and the bottom of the vibrating screen part is provided with a powder outlet hole, and is used for screening substances falling on the vibrating screen part to obtain powder with required particle size; the powder discharge control part is arranged below the vibrating sieving part and comprises a rotary driving motor, a first lifting mechanism and a blocking piece, wherein an output shaft of the rotary driving motor is connected with the mounting plate and is used for driving the mounting plate to drive the vibrating sieving part to rotate; the first lifting mechanism is fixedly arranged above the mounting plate, and the lifting end of the first lifting mechanism is connected with the vibration screening part through the second bearing; the blocking piece is fixedly arranged outside the second bearing and is tightly adhered to the powder outlet hole of the vibrating screen part, a notch for exposing the powder outlet hole of the vibrating screen part is arranged on the blocking piece, and the powder outlet of the powder screening device is controlled by adjusting the relative position of the blocking piece and the powder outlet hole;
The powder returning device comprises a box bottom cover moving mechanism and a screening device lifting device, wherein the box bottom cover moving mechanism is arranged on the upper part of the base and comprises a horizontal driving mechanism and a box bottom cover, and a horizontal telescopic end of the horizontal driving mechanism is fixedly connected with the box bottom cover and is used for driving the box bottom cover to horizontally slide; the bottom cover of the box body is arranged below the powder falling opening and is tightly attached to the bottom of the ball grinding box and used for being inserted into the gap between the powder sieving shell and the powder falling opening so as to control the opening and closing of the powder falling opening; the screening device lifting device is arranged at the lower part of the base and comprises at least one second lifting mechanism, and the lifting end of the second lifting mechanism is fixedly connected with the vibrating screening part of the powder screening device and is used for driving the vibrating screening part to lift so as to control whether the vibrating screening part extends into the inner cavity of the ball grinding box from the powder falling port;
The powder storage device is arranged at the lower part of the base and is positioned right below the powder outlet hole of the powder screening device, and comprises a powder screening box body and a powder collecting box, wherein the powder collecting box is arranged inside the powder screening box body and is used for receiving and storing powder falling from the powder outlet hole of the powder screening device;
The ball mill comprises a ball mill body and a box upper cover, wherein the upper part of the ball mill body is detachably provided with the box upper cover, the bottom of the ball mill body is provided with a powder falling port, and the inner edge of the ball mill body is provided with a powder falling groove for collecting substances recovered from a powder screening device; the upper cover of the box body is provided with a powder feeding port, a mounting hole and a vent, and the powder feeding port is matched with a feed port sealing cover;
the vibration screening part comprises a powder bead screening device, a powder particle size screening device and a fluidity screening device, wherein the powder bead screening device, the powder particle size screening device and the fluidity screening device are sequentially stacked from top to bottom, and the pore diameters of the powder bead screening device, the powder particle size screening device and the fluidity screening device are gradually reduced.
2. A composite powder production apparatus for supersonic laser deposition according to claim 1, wherein: the stirring mechanism comprises a stirring motor, a stirring shaft and a belt, wherein the stirring shaft is arranged in the inner cavity of the ball milling box body and is connected with the upper cover of the box body through a first bearing; the output shaft of the stirring motor and the upper part of the stirring shaft are respectively provided with a belt pulley, and the two belt pulleys are connected with each other through a belt and used for realizing power transmission between the stirring motor and the stirring shaft.
3. A composite powder production apparatus for supersonic laser deposition according to claim 2, wherein: the base from the top down divide into three installation district, be ball-milling case installation district, sieve powder device installation district and powder storage device installation district respectively, wherein sieve powder device installation district dismantlement formula installation screening plant closing cap, powder storage device installation district dismantlement formula installation powder apotheca and screening box.
4. A composite powder production apparatus for supersonic laser deposition according to claim 1, wherein: the blocking piece is a butterfly piece.
5. A composite powder production apparatus for supersonic laser deposition according to claim 1, wherein: the horizontal driving mechanism, the first lifting mechanism and the second lifting mechanism are all hydraulic cylinders.
6. A composite powder production apparatus for supersonic laser deposition according to claim 1, wherein: the powder collecting box is provided with a powder feeding port which can be communicated with a powder feeder pipeline and is used for conveying powder in the powder collecting box into the powder feeder.
7. A composite powder production apparatus for supersonic laser deposition according to claim 1, wherein: at least one grinding ball is placed in the ball milling box body.
8. A composite powder production apparatus for supersonic laser deposition according to claim 1, wherein: the vibrating screen section also includes a vibrating device.
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| CN112609179B (en) * | 2020-12-01 | 2022-10-21 | 江西鑫润材料科技有限公司 | Alloy powder recovery plant to laser cladding |
| CN113060558B (en) * | 2021-03-30 | 2021-11-02 | 中国医学科学院阜外医院 | Glove powdering device |
| CN114210986B (en) * | 2021-12-30 | 2024-01-12 | 杭州彰钰不锈钢有限公司 | Preparation process of cold-spraying superfine alloy powder coating material |
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