CN105862034A - Supersonic laser deposition coaxial powder feeding device - Google Patents
Supersonic laser deposition coaxial powder feeding device Download PDFInfo
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- CN105862034A CN105862034A CN201610414744.7A CN201610414744A CN105862034A CN 105862034 A CN105862034 A CN 105862034A CN 201610414744 A CN201610414744 A CN 201610414744A CN 105862034 A CN105862034 A CN 105862034A
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- laser
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- powder feeding
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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
- C23C24/08—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
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Nozzles (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a supersonic laser deposition coaxial powder feeding device. The device comprises a laser light emergence cavity, an installation barrel, a baffle, one or more protecting gas conveying pipes and one or more laval spray pipes, the laser light emergence cavity comprises a laser passage and a laser head, the laser passage and the laser head are integrally formed, the laser passage is coaxial with a light outlet of the laser head, and a light-permeable lens is arranged at the light outlet of the laser head; after penetrating through a central hole of the baffle, the laser passage is coaxially inserted into an inner cavity of the installation barrel, and the bottom of the installation barrel abuts against the upper surface of the baffle; the lower surface of the baffle is attached to the upper surface of the laser head; the laval spray pipes are embedded into the laser head, air inlets of the laval spray pipes are communicated with high pressure gas powder conveying pipes clamped to the baffle, and central axes of all the laval spray pipes all converge with laser emitted out of the laser light emergence cavity. The supersonic laser deposition coaxial powder feeding device has the technical advantages that relative positions of the laval spray pipes and the laser head do not need to be adjusted successively, and in addition, in the spraying process, relative positions of powder spots and light spots cannot be changed.
Description
Technical field
The present invention relates to a kind of supersonic speed laser deposition coaxial powder feeding apparatus.
Background technology
Cold spraying is also known as cold-air dynamic spraying (Cold Gas Dynamic Spray, CGDS),
It is, to carry as accelerating medium with compressed gas (helium, nitrogen, air or mixed gas etc.)
Solid granulates produces supersonic speed gas-solid phase in entering Laval nozzle (Laval nozzle), Gu
State granule collides base with high speed (more than or equal to its critical deposition velocity) after accelerating
Surface, makes granule and matrix occur strong plastic deformation to form a kind of new of coating simultaneously
Type spraying technology.Compared with thermal spraying, in cold spray process, granule heating-up temperature is low, still protects
Holding solid-state, solid granulates passes through " adiabatic under the conditions of high stress, strain and strain rate
Shearing instability " plastic flow that causes or realize existing by mechanical processes such as severe plastic deformations
Deposition on surface of the work.Therefore in spraying process granule be not susceptible to oxidation, scaling loss, phase transformation,
Crystal grain such as grows up at phenomenon, the chemical composition of therefore cold spraying coating and the microstructure can be with
Raw material keeps consistent, is particularly suited for temperature-sensitive material (such as nano material, non-crystalline material
Deng), oxidizable material (such as aluminum, copper, titanium etc.) and easy phase-change material (such as C-base composte material etc.)
Coating prepare.
Although cold spraying has it at aspects such as holding coating material primitive component, minimizing heat affectings
Unique advantage, but simple cold spray technique still has the disadvantage in that 1) deposition hardness
During higher coating material, it is necessary to helium for work carrier gas, relatively costly；2) granule is effective
The preparation of deposition and stable quality coating is largely dependent upon granule and baseplate material
Characteristic；3) coating is mainly mechanical bond with the binding mechanism of matrix, therefore deposits coating
Bond strength is relatively low.
For the deficiency of cold spray technique, William O ' the Neill problem of univ cambridge uk
Group proposes supersonic speed laser deposition technique (Supersonic Laser Deposition, SLD),
Laser irradiation is synchronized to introduce in the cold spraying course of processing, is radiated cold spraying by laser energy
Granule, matrix or both carry out thermal softening process simultaneously, moment regulation and improve the mechanics of materials
Performance and Collision deposition state, improve the thickness of low pressure cold sprayed coating, deposition efficiency, consistency
And bond strength, and then improve the serviceability of coating.Due to LASER HEATING to sprayed particle and
The emollescence of base material, the critical deposition velocity of sprayed particle is down to original half, therefore may be used
Substitute expensive helium with cheap nitrogen, it is achieved the deposition of high hardness material, reducing
The scope of cold spraying deposition material has been widened while cost.
Supersonic speed laser deposition experimental provision mainly comprises the following steps: laser instrument, spray gun,
Mechanical arm, powder feeder and high-pressure air source and other auxiliary equipments.Wherein, gun system is
Core apparatus.Sprayed particle mixes in spray gun with accelerating gas, and accelerates to certain speed,
Clash into substrate and form coating.Traditional supersonic laser deposition system is as it is shown in figure 1, Lavalle is sprayed
Pipe 101, coating 102, matrix 103, laser head 104.Wherein Laval nozzle and laser head
Clamping is on mechanical arm respectively, and both are separate.Ultrasonic powder particle is deposited on sharp
In the region of beam irradiation.Therefore, before experiment is carried out, it is required for regulating laser head and nozzle
Relative position, to ensure that the hot spot of laser and amyloid plaque overlap.This just makes experimentation become numerous
Trivial complexity.It addition, in experimentation, due to the swing of mechanical arm may affect hot spot with
The relative position of amyloid plaque, thus cause the region of laser irradiation during deposition uneven,
Have impact on the combination between coating and matrix.And at the gun system of traditional supersonic laser deposition
In, only one of which Laval nozzle coordinates with laser instrument, is unfavorable for the abundant of laser irradiation energy
Utilize.
Accordingly, it would be desirable to it is coaxial to develop a kind of easily operated multifunctional novel supersonic speed laser deposition
Dust feeder.
Summary of the invention
For above-mentioned deficiency present in traditional supersonic laser deposition gun system, the present invention's
Purpose is to provide a kind of easily operated multi-functional supersonic speed laser deposition coaxial powder feeding apparatus.
A kind of supersonic speed laser deposition coaxial powder feeding apparatus of the present invention, it is characterised in that:
Including Laser output chamber, mounting cylinder, baffle plate, at least one protection letter shoot and at least one
Laval nozzle, described Laser output chamber includes laser via and laser head, described laser
Path is one-body molded with described laser head, and described laser via goes out with described laser head
Light mouth is coaxial, and is provided with transmissive mirror at the light-emitting window of described laser head；Described laser leads to
Road is co-axially inserted described mounting cylinder inner chamber, described installation after running through described baffle center hole
The bottom of cylinder is against described baffle plate upper surface；The lower surface of described baffle plate and described laser
The upper surface laminating of head；In the described laser head described in Laval nozzle embedding, described draws
The air inlet of Wa Er jet pipe connects with the gases at high pressure powder conduit being stuck on baffle plate, all of
The laser that the axis of Laval nozzle is all penetrated with Laser output chamber crosses；Described protection gas
The upper end air inlet of protection letter shoot in the laser head described in embedding of conveying pipe and described
Mouthful stretch out from baffle plate upper surface, the gas outlet, lower end of described protection letter shoot be positioned at printing opacity
The light-emitting window connection of the described laser head bottom mirror.
Described Laval nozzle is circumferentially arranged along the gas outlet of described laser head.
Described Laval nozzle is divided into for being connected with described gases at high pressure powder conduit
Direct tube section, as the contraction section of throat and expansion segment, the throat shape of described contraction section is
Circle, rectangle or ellipse.
Described transmissive mirror is connected with the gas outlet inner wall sealing of described laser head, and printing opacity
The central shaft of mirror overlaps with the central shaft in described Laser output chamber.
The laser spot diameter of described Laser output chamber injection is more than described Laval nozzle
The dusty spray amyloid plaque diameter of injection.
Bearing score nozzle of the present invention can be two, three, and four or five are the most,
It is distributed on top, Laser output chamber；Bearing score nozzle powder feeding supply gas control separate, Ke Yiyi
Individual or multiple powder feedings that cooperate；The spray distance of Bearing score nozzle can equal can not also phase
Deng；The throat diameter of Bearing score nozzle can be the same or different.
The method have the benefit that: 1) Laval nozzle and laser head be integrated into one
In individual device, simplify experimental facilities；
2) without gradually regulating the relative position of Laval nozzle and laser head, and in spraying
During, amyloid plaque also will not change with the relative position of hot spot；
3) achieve the compound of multiple Laval nozzle and one laser beam, improve laser energy
The utilization rate of amount；
4) powder feeding between multiple Laval nozzles is separate with control of supplying gas, and can have
Selectively certain several nozzle is carried out powder feeding to supply gas such that it is able to the regulation powder feeding on a large scale
Rate；
5) throat shape of multiple Laval nozzles can be identical with size, it is also possible to different,
Of the same race or the compound use of xenogenesis parameters Nozzle can be realized；
6) in multiple Laval nozzles, the kind of deposited powder granule can be identical with size, also
Can be different, so can synchronize to realize the composite deposition of multiple material, be greatly enriched many
Plant the matching way of powder particle.
Accompanying drawing explanation
Fig. 1 is structural representation (the 101-Lavalle spray of traditional supersonic laser deposition system
Mouth；102-coating；103-matrix；104-laser head)；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the schematic diagram that the present invention arranges two identical circular Laval nozzles；
Fig. 4 is that one of Laser output chamber top nozzle and amyloid plaque distribution schematic diagram of Fig. 3 (is overlooked
Figure, the direction of arrow represents scanning speed direction, and A represents amyloid plaque I；B represents amyloid plaque II)；
Fig. 5 is schematic diagram (one of them larynx that the present invention arranges two different Laval nozzles
Tube shape is circular, and another trunnion is shaped as square)；
Fig. 6 is Laser output chamber top nozzle and the two (vertical views of amyloid plaque distribution schematic diagram of Fig. 5
Figure, the direction of arrow represents scanning speed direction, and A represents amyloid plaque I；C represents amyloid plaque III)；
Fig. 7 is schematic diagram (the two of which trunnion shape that the present invention arranges three Laval nozzles
For circle, another trunnion is shaped as ellipse)；
Fig. 8 is Laser output chamber top nozzle and the two (vertical views of amyloid plaque distribution schematic diagram of Fig. 7
Figure, the direction of arrow represents scanning speed direction, and A represents amyloid plaque I；B represents amyloid plaque II；D
Represent amyloid plaque IV).
Detailed description of the invention
Further illustrate the present invention below in conjunction with the accompanying drawings
Referring to the drawings:
Embodiment 1 a kind of supersonic speed laser deposition coaxial powder feeding apparatus of the present invention, including
Laser output chamber 1, mounting cylinder 2,3, at least one, baffle plate protection letter shoot 4 and at least
One Laval nozzle 5, described Laser output chamber 1 includes laser via 11 and laser head
12, described laser via 11 is one-body molded with described laser head 12, and described laser leads to
Going out of the laser head 12 that road 11 is coaxial and described with the light-emitting window of described laser head 12
Transmissive mirror 6 it is provided with at light mouth；Described laser via run through after described baffle plate 3 centre bore with
Mounting cylinder 2 inner chamber described in axle insertion, the bottom of described mounting cylinder 2 is against described baffle plate
3 upper surfaces；The upper surface laminating of the lower surface of described baffle plate 3 and described laser head；Institute
The Laval nozzle 5 stated embeds in described laser head 12, described Laval nozzle 5
Air inlet connects with the gases at high pressure powder conduit 7 being stuck on baffle plate 3, all of Lavalle
The laser that the axis of jet pipe 7 is all penetrated with Laser output chamber 1 crosses；Described protection gas is defeated
In sending the laser head 12 described in the embedding of pipe 4 and described protects the upper of letter shoot 4
End air inlet stretches out from baffle plate 3 upper surface, the gas outlet, lower end of described protection letter shoot 4
Connect with the light-emitting window of laser head 12 described in being positioned at bottom transmissive mirror 6.
Described Laval nozzle 5 is circumferentially arranged along the gas outlet of described laser head 12.
Described Laval nozzle 5 is divided into for described gases at high pressure powder conduit 7 even
The direct tube section that connects, as the contraction section of throat and expansion segment, the throat shape of described contraction section
For circular, rectangle or ellipse.
Described transmissive mirror 6 is connected with the gas outlet inner wall sealing of described laser head 12, and
And the central shaft of transmissive mirror 6 overlaps with the central shaft in described Laser output chamber 1.
The laser spot diameter of described Laser output chamber 1 injection is more than described Lavalle spray
The dusty spray amyloid plaque diameter of pipe injection.
Bearing score nozzle of the present invention can be two, three, and four or five are the most,
It is distributed on top, Laser output chamber；Bearing score nozzle powder feeding supply gas control separate, Ke Yiyi
Individual or multiple powder feedings that cooperate；The spray distance of Bearing score nozzle can equal can not also phase
Deng；The throat diameter of Bearing score nozzle can be the same or different.
In 2 examples of embodiment, laser head is provided with two Laval nozzles, and Lavalle is sprayed
The contraction section of pipe generally circular in shape；Laser spot diameter is more than the diameter of amyloid plaque, two circles
Laval nozzle (51,52) is distributed in the laser in Laser output chamber about emitting cavity axisymmetrical
Head (as shown in Figure 3), in Laval nozzle two bundle powder-gas two phase flows clash into simultaneously by
Matrix 7 region of laser synchronization heating.The amyloid plaque I of nozzle 51 and amyloid plaque II phase of nozzle 52
Adjoin mutually but the most overlapping (part cloth on the right side along scanning speed direction one the first from left, as shown in Figure 4),
And be positioned on same level line.Compared to traditional spraying process, after single spin, monolayer
Coating is made up of twice sedimentary overlap joint, substantially increases the width of single spin.
In 3 examples of embodiment, laser head is provided with two Laval nozzles, and Lavalle is sprayed
The shape of the contraction section of pipe one is circular, and one is square；Laser spot diameter is more than amyloid plaque
Diameter, circular Laval nozzle 51 and square Laval nozzle 53 are the most right about emitting cavity axis
Claim the head being distributed in Laser output chamber, (as shown in Figure 5), two bundle powder-gas in nozzle
Body two phase flow clashes into the matrix region heated by laser synchronization simultaneously.Amyloid plaque I He of nozzle 51
The amyloid plaque III of nozzle 53 adjacent but the most overlapping (be one in front and one in back distributed on scanning speed direction,
As shown in Figure 6).Compared with the spraying process of conventional lance system, after single spin, single
Layer coating is made up of twice sedimentary superposition, improves the thickness of single spin coating, and real
Show the recombination laser deposition of xenogenesis shape nozzle
In 4 examples of embodiment, laser head is provided with three Laval nozzles, and Lavalle is sprayed
The shape of the contraction section of pipe two is circular, and one is oval；Laser spot diameter is more than powder
Spot diameter, circular Laval nozzle (51,52) and the 3rd oval Laval nozzle (54) are no
It is evenly distributed on the surrounding (as shown in Figure 7) of Laser output chamber head, the three beams powder in nozzle
End-gas two phase flow clashes into the matrix region heated by laser synchronization simultaneously.The amyloid plaque of nozzle 51
I and the amyloid plaque II of nozzle 52 mutually adjoin but the most overlapping (right along scanning speed direction one the first from left
Distribution), the amyloid plaque IV of the 3rd nozzle 54 weighs with the amyloid plaque I, II of nozzle (51,52) simultaneously
Folded, as shown in Figure 8.The powder of three nozzles and gas are by same group of high-pressure air source and powder feeder
Conveying, but have separate control system, can as required to one of them nozzle,
Two nozzles or three nozzles carry out powder feeding individually or simultaneously and supply gas.Spray with conventional lance system
Painting process is compared, and after single spin, can obtain the compound single track coating of xenogenesis shape, overlap joint
Coating or superposition coating, not only can improve the width of one single deposition, and also improve thickness.
Content described in this specification embodiment is only the row of the way of realization to inventive concept
Lifting, protection scope of the present invention is not construed as being only limitted to the concrete shape that embodiment is stated
Formula, protection scope of the present invention also includes that those skilled in the art are caned according to present inventive concept
The equivalent technologies means expected.
Claims (5)
1. a supersonic speed laser deposition coaxial powder feeding apparatus, it is characterised in that: include laser
Emitting cavity, mounting cylinder, baffle plate, at least protection letter shoot and the spray of at least one Lavalle
Pipe, described Laser output chamber includes laser via and laser head, described laser via and institute
The laser head stated is one-body molded, and described laser via is same with the light-emitting window of described laser head
It is provided with transmissive mirror at axle, and the light-emitting window of described laser head；Described laser via runs through
Described mounting cylinder inner chamber, the end of described mounting cylinder it is co-axially inserted behind described baffle center hole
Portion is against described baffle plate upper surface；The lower surface of described baffle plate is upper with described laser head
Fit in surface；In the described laser head described in Laval nozzle embedding, described Lavalle spray
The air inlet of pipe connects with the gases at high pressure powder conduit being stuck on baffle plate, all of Lavalle
The laser that the axis of jet pipe is all penetrated with Laser output chamber crosses；Described protection letter shoot
The laser head described in embedding in, and the upper end air inlet of described protection letter shoot is from gear
Plate upper surface stretches out, the gas outlet, lower end of described protection letter shoot be positioned at bottom transmissive mirror
Described laser head light-emitting window connection.
2. a kind of supersonic speed laser deposition coaxial powder feeding apparatus as claimed in claim 1, its
It is characterised by: described Laval nozzle is circumferentially arranged along the gas outlet of described laser head.
3. a kind of supersonic speed laser deposition coaxial powder feeding apparatus as claimed in claim 2, its
Be characterised by: described Laval nozzle be divided into for described gases at high pressure powder conduit
The direct tube section that connects, as the contraction section of throat and expansion segment, throat's shape of described contraction section
Shape is circular, rectangle or ellipse.
4. a kind of supersonic speed laser deposition coaxial powder feeding apparatus as claimed in claim 1, its
It is characterised by: described transmissive mirror is connected with the gas outlet inner wall sealing of described laser head, and
And the central shaft of transmissive mirror overlaps with the central shaft in described Laser output chamber.
5. a kind of supersonic speed laser deposition coaxial powder feeding apparatus as claimed in claim 1, its
It is characterised by: the laser spot diameter of described Laser output chamber injection is more than described Lavalle
The dusty spray amyloid plaque diameter of jet pipe injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414744.7A CN105862034B (en) | 2016-06-14 | 2016-06-14 | A kind of supersonic speed laser deposition coaxial powder feeding apparatus |
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|---|---|---|---|
| CN201610414744.7A CN105862034B (en) | 2016-06-14 | 2016-06-14 | A kind of supersonic speed laser deposition coaxial powder feeding apparatus |
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| CN105862034A true CN105862034A (en) | 2016-08-17 |
| CN105862034B CN105862034B (en) | 2018-11-13 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399897A (en) * | 2016-09-22 | 2017-02-15 | 常州大学 | Method and device for preparing amorphous aluminum coating by means of laser thermal spraying |
| CN108127118A (en) * | 2018-01-19 | 2018-06-08 | 浙江万丰科技开发股份有限公司 | A kind of metal powder laser 3D printing nozzle |
| CN109837497A (en) * | 2019-04-17 | 2019-06-04 | 中国人民解放军军事科学院国防科技创新研究院 | A kind of central coaxial powder feeding formula supersonic speed laser spraying method |
| CN110055484A (en) * | 2019-04-25 | 2019-07-26 | 陕西天元智能再制造股份有限公司 | A kind of supersonic speed laser deposition spray gun, laser deposition device and laser deposition method |
| CN110819984A (en) * | 2019-11-29 | 2020-02-21 | 浙江工业大学 | Laser and electric co-heating thermal spraying device |
| CN110904453A (en) * | 2019-12-27 | 2020-03-24 | 浙江工业大学 | Device for adjusting relative position of supersonic laser deposition light spot/powder spot in real time |
| CN110904447A (en) * | 2019-12-27 | 2020-03-24 | 浙江工业大学 | Inner wall supersonic laser composite deposition device |
| CN111005016A (en) * | 2019-12-27 | 2020-04-14 | 浙江工业大学 | Scanning galvanometer-assisted supersonic laser composite high-speed deposition device |
| CN111441045A (en) * | 2020-05-28 | 2020-07-24 | 西安建筑科技大学 | Electron beam deposition nozzle and method |
| CN112718282A (en) * | 2020-12-15 | 2021-04-30 | 国营芜湖机械厂 | Vacuum electric-sweeping supersonic speed deposition spray gun |
| WO2021109383A1 (en) * | 2019-12-04 | 2021-06-10 | 广东省新材料研究所 | Method for preparing thick copper coating for plate roller |
| CN113210844A (en) * | 2021-04-09 | 2021-08-06 | 浙江工业大学 | Process method for enhancing sealing performance of welded shell of lithium ion battery based on supersonic laser deposition technology |
| CN114226729A (en) * | 2020-09-09 | 2022-03-25 | 华中科技大学 | Powder fluid thermal plasticizing injection molding device, composite molding system and method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399897A (en) * | 2016-09-22 | 2017-02-15 | 常州大学 | Method and device for preparing amorphous aluminum coating by means of laser thermal spraying |
| CN108127118A (en) * | 2018-01-19 | 2018-06-08 | 浙江万丰科技开发股份有限公司 | A kind of metal powder laser 3D printing nozzle |
| CN109837497A (en) * | 2019-04-17 | 2019-06-04 | 中国人民解放军军事科学院国防科技创新研究院 | A kind of central coaxial powder feeding formula supersonic speed laser spraying method |
| CN110055484B (en) * | 2019-04-25 | 2021-08-20 | 西安智能再制造研究院有限公司 | Supersonic laser deposition spray gun, laser deposition device and laser deposition method |
| CN110055484A (en) * | 2019-04-25 | 2019-07-26 | 陕西天元智能再制造股份有限公司 | A kind of supersonic speed laser deposition spray gun, laser deposition device and laser deposition method |
| CN110819984A (en) * | 2019-11-29 | 2020-02-21 | 浙江工业大学 | Laser and electric co-heating thermal spraying device |
| WO2021109383A1 (en) * | 2019-12-04 | 2021-06-10 | 广东省新材料研究所 | Method for preparing thick copper coating for plate roller |
| CN110904447A (en) * | 2019-12-27 | 2020-03-24 | 浙江工业大学 | Inner wall supersonic laser composite deposition device |
| CN111005016A (en) * | 2019-12-27 | 2020-04-14 | 浙江工业大学 | Scanning galvanometer-assisted supersonic laser composite high-speed deposition device |
| CN110904453A (en) * | 2019-12-27 | 2020-03-24 | 浙江工业大学 | Device for adjusting relative position of supersonic laser deposition light spot/powder spot in real time |
| CN110904453B (en) * | 2019-12-27 | 2024-03-26 | 浙江工业大学 | Device for adjusting relative position of supersonic laser deposition light spot/powder spot in real time |
| CN110904447B (en) * | 2019-12-27 | 2024-03-26 | 浙江工业大学 | Inner wall supersonic laser composite deposition device |
| CN111441045A (en) * | 2020-05-28 | 2020-07-24 | 西安建筑科技大学 | Electron beam deposition nozzle and method |
| CN111441045B (en) * | 2020-05-28 | 2024-03-22 | 西安建筑科技大学 | Electron beam deposition spray head and method |
| CN114226729A (en) * | 2020-09-09 | 2022-03-25 | 华中科技大学 | Powder fluid thermal plasticizing injection molding device, composite molding system and method |
| CN112718282A (en) * | 2020-12-15 | 2021-04-30 | 国营芜湖机械厂 | Vacuum electric-sweeping supersonic speed deposition spray gun |
| CN113210844A (en) * | 2021-04-09 | 2021-08-06 | 浙江工业大学 | Process method for enhancing sealing performance of welded shell of lithium ion battery based on supersonic laser deposition technology |
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