CN116043211A - Small inner hole laser cladding nozzle - Google Patents
Small inner hole laser cladding nozzle Download PDFInfo
- Publication number
- CN116043211A CN116043211A CN202211524224.3A CN202211524224A CN116043211A CN 116043211 A CN116043211 A CN 116043211A CN 202211524224 A CN202211524224 A CN 202211524224A CN 116043211 A CN116043211 A CN 116043211A
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- powder
- powder feeding
- hole
- nozzle
- laser cladding
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- 238000004372 laser cladding Methods 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 157
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 3
- QZLJNVMRJXHARQ-UHFFFAOYSA-N [Zr].[Cr].[Cu] Chemical compound [Zr].[Cr].[Cu] QZLJNVMRJXHARQ-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 description 23
- 230000000694 effects Effects 0.000 description 19
- 230000009471 action Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Classifications
-
- 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
-
- 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)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a small inner hole laser cladding nozzle, which relates to the technical field of laser cladding equipment and solves the technical problems of poor powder focusing and non-uniform powder discharge of the existing laser cladding nozzle. According to the invention, powder is fed in a combined mode of the annular powder feeding groove and the powder blocking block, so that good straightness, uniformity and focusing property of powder flow are ensured, the powder utilization rate is improved, and the inner hole processing production cost is reduced.
Description
Technical Field
The invention relates to the technical field of laser cladding equipment, in particular to the technical field of small-bore laser cladding nozzles.
Background
The laser cladding equipment mainly comprises a laser, a cladding nozzle, a processing platform and a feeding device. The laser cladding nozzle is a key core component of a laser cladding system, can realize the transmission, transformation, focusing and synchronous conveying of laser beams and cladding materials, realizes the precise coupling among the laser beams, the cladding materials and a molten pool on the surface of a substrate, and continuously forms a cladding layer. The laser beam shaping, transformation, focusing, material transmission, jetting, converging and light material coupling modes are key technologies of the cladding nozzle.
The laser cladding spray head is internally provided with a light path, a powder path, a water path, a gas path and other structures. The existing common inner diameter nozzle has poor comprehensive performance. The conventional inner diameter hole workpiece of the laser cladding nozzle is limited in size when being clad, and the minimum size capable of being clad is often limited by the size of a laser head when the inner diameter Kong Rong of the workpiece is clad.
The protection effect of the molten pool is poor, the protection effect of the molten pool in a lateral powder feeding mode, a two-point powder feeding mode, a three-point powder feeding mode or a four-point powder feeding mode is poor, and the surface oxidation is serious after the fusion forming. The inner diameter Kong Rong of the annular powder feeding nozzle is easy to block powder when being coated, when the nozzle in the annular powder feeding mode is coated in an inner hole, the problems that metal powder splashes and the heat dissipation effect of a powder outlet is poor exist, the powder outlet is easy to burn out and block powder, in addition, the nozzle has non-uniformity around the powder outlet, and if the nozzle is used by tilting more than 5 degrees, the powder non-uniformity is more serious.
The nozzle has insufficient water cooling, and when the nozzle is clad for a long time, the conventional nozzle has insufficient cooling, and the nozzle opening is easy to burn and damage, so that the cladding operation is suspended or defects appear on the surface. The maintenance cost is high. The integrated design has high replacement and maintenance cost after burning loss, adopts a small module replacement design, is flexible to replace, and reduces the cost.
Disclosure of Invention
The invention aims at: the invention provides a small-bore laser cladding nozzle, which aims to solve the technical problems of poor powder focusing and uneven powder discharge of the existing laser cladding nozzle.
The invention adopts the following technical scheme for realizing the purposes:
the utility model provides a nozzle is covered to little hole laser cladding, includes the nozzle body, annular powder feeding groove has been seted up at nozzle body top, a plurality of powder feeding holes have been seted up to annular powder feeding inslot, annular powder feeding inslot is provided with the powder blocking piece, a plurality of with powder feeding hole intercommunication formation powder feeding passageway's play powder hole has been seted up to nozzle body bottom.
Further, the powder feeding groove is a groove with an upward opening, the annular powder feeding groove is arranged at the central position of the top of the nozzle body, a plurality of powder blocking blocks are arranged at the groove bottom annular array of the annular powder feeding groove, and two powder blocking blocks are arranged at two sides of each powder feeding hole along the inside of the annular powder feeding groove.
Further, 10 powder feeding holes and 10 powder discharging holes are formed.
Further, a phosgene through hole is formed in the top of the nozzle body, the phosgene through hole and the powder feeding groove are coaxially arranged, and the shape of the inside of the phosgene through hole is big in top and small in bottom.
Further, the powder outlet holes are annularly arranged along the lower outlet of the phosgene through hole and symmetrically arranged along the bottom of the nozzle body.
Further, a cooling water loop is horizontally arranged at the middle lower part in the nozzle body, and the cooling water loop is positioned at one side of the powder feeding channel far away from the phosgene through hole.
Further, the cooling water loop comprises two water inlet pipelines and one water outlet pipeline, and a water inlet and a water outlet are respectively arranged on the side of the nozzle body.
Further, the nozzle body is connected with the laser cladding spray head through the connecting end, and a threaded through hole for being connected with the connecting end is formed in the nozzle body. The nozzle body is made of chromium, zirconium and copper.
Further, the minimum inner diameter Kong Rong of the nozzle is 80mm in size.
The beneficial effects of the invention are as follows:
1. according to the invention, powder is fed in a combined mode of the annular powder feeding groove and the powder blocking block, vortex is formed in the annular powder feeding groove under the action of powder feeding gas, the powder is blocked by the powder blocking block to fill the powder feeding hole, and is fed out through the powder feeding hole under the combined action of gravity and protective air pressure, so that the direct irradiation, uniformity and focusing of powder flow are ensured, the utilization rate of the powder is improved, the processing production cost of an inner hole is reduced, meanwhile, the fault tolerance rate of the porous powder is increased, and the blocking block design is adopted, so that the powder discharge amount of each powder hole is almost identical, and the uniformity is good. The design method solves the defects of non-uniformity of powder of the annular nozzle and non-inclinable cladding of the nozzle.
2. According to the ten-point powder feeding mode adopted by the invention, the number of the powder feeding holes is increased, and the holes are symmetrically distributed, so that the powder feeding air flow can be effectively utilized to achieve a good molten pool protection effect, the molten pool protection effect is obviously improved under the combined action of the multi-path powder feeding air and the protection air, the oxidation of materials is reduced, the difficulty of process debugging is reduced, and the quality of a cladding layer is better ensured.
3. The water cooling of the nozzle body is independently arranged, and the cooling water loop of the nozzle module is close to the nozzle opening, so that the reasonable cooling water flow is ensured, the cooling effect is improved, and the continuous cladding is suitable for avoiding burning loss of the nozzle opening.
4. The invention adopts modularized arrangement, the nozzle body is connected with the connecting end through bolts, and nozzles with different functions can be replaced, thereby being convenient for later optimization and improvement; in addition, after the nozzle is damaged, only the nozzle can be replaced, the whole spray head does not need to be replaced, and the replacement cost is greatly reduced.
Drawings
FIG. 1 is a schematic view of the bottom structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a cross-sectional view of the invention A-A;
FIG. 4 is a cross-sectional view of the invention B-B;
FIG. 5 is a schematic view of the structure of the present invention;
FIG. 6 is a schematic view of the structure of the connection end;
FIG. 7 is a graph of the cladding effect of the nozzle of the present invention;
FIG. 8 is a plot of the cladding effect of a two-point nozzle;
FIG. 9 is a powder out of the nozzle of the present invention;
FIG. 10 is a powder out of two-point nozzle;
reference numerals: the spray nozzle comprises a spray nozzle body, a lower outlet, a 3-powder outlet, a 4-water outlet, a 5-threaded through hole, a 6-annular powder feeding groove, a 7-powder blocking block, an 8-powder feeding hole, a 9-phosgene through hole, a 10-water inlet pipeline, a 11-water outlet pipeline, a 12-water inlet, a 13-connecting end and a 14-mounting threaded hole.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 5, this embodiment provides a small-bore laser cladding nozzle, which comprises a nozzle body 1, an annular powder feeding groove 6 is formed at the top of the nozzle body 1, a plurality of powder feeding holes 8 are formed in the annular powder feeding groove 6, a powder blocking block 7 is arranged in the annular powder feeding groove 6, and a plurality of powder outlet holes 3 which are communicated with the powder feeding holes 8 to form a powder feeding passage are formed at the bottom of the nozzle body 1.
The top of the nozzle body 1 is provided with an annular powder feeding groove 6, a plurality of powder feeding holes 8 are circumferentially distributed along the bottom of the annular powder feeding groove 6, a plurality of powder outlet holes 3 with the aperture phi of 1.2mm are circumferentially distributed at the bottom of the nozzle body 1, the diameter of a circular ring formed by surrounding the powder feeding holes 8 is larger than that of a circular ring formed by surrounding the powder outlet holes 3, so that powder forms a concentrated focusing effect when passing through the part of the structure from the powder feeding holes 8 to the powder outlet holes 3, meanwhile, the annular powder feeding groove 6 is combined with a powder blocking piece 7, the powder firstly forms vortex in the annular powder feeding groove 6 under the action of powder feeding gas, the powder blocking piece 7 blocks the powder to fill the powder feeding holes 8, and the powder is fed out through the powder outlet holes 3 under the combined action of gravity and protective air pressure, thereby improving the direct radiation, uniformity and focusing performance of the powder flow, and the mode of porous powder outlet are also increased, and the powder focusing performance is enhanced.
The check block is arranged in the annular powder feeding groove 6, so that the powder discharge amount of each powder discharge hole 3 is almost identical, the uniformity is improved, and the defects of non-uniformity of powder of the annular nozzle and non-inclinable cladding of the nozzle are overcome.
Example 2
As shown in fig. 1 to 5, according to embodiment 1, the annular powder feeding groove 6 is a groove with an upward opening, a plurality of powder blocking blocks 7 are arranged at the groove bottom of the annular powder feeding groove 6 in an annular array, and each powder feeding hole 8 is provided with two powder blocking blocks 7 along two sides in the groove of the annular powder feeding groove 6. 10 powder feeding holes 8 and 10 powder discharging holes 3 are formed.
12 powder blocking blocks 7 are fixedly arranged in the annular powder feeding groove 6 in an annular array manner, so that 10 powder feeding holes 8 are uniformly distributed among the 12 powder blocking blocks 7, and meanwhile, the powder feeding holes 8 are equally divided into 2 groups and symmetrically arranged. The number of the powder feeding holes 8 is increased, so that the powder feeding air flow can be effectively utilized to achieve a good molten pool protection effect, the powder focus position is designed at the bottom of the nozzle body, and the protection air flow has wider and more concentrated action range.
Example 3
As shown in fig. 2 and 4, a phosgene through hole 9 is formed in the nozzle body 1, the phosgene through hole 9 and the annular powder feeding groove 6 are coaxially arranged, and the shape of the inside of the phosgene through hole 9 is big-end-up. The powder outlet holes 3 are annularly arranged along the lower outlet 2 of the phosgene through hole 9 and symmetrically arranged along the bottom of the nozzle body 1.
The inner ring surface of the annular powder feeding groove 6 is provided with a channel, the diameter of the upper opening of the channel is larger than that of the bottom opening of the channel, the channel is a phosgene through hole 9 which is in an inverted cone shape as a whole, and the laser beam and the protective gas penetrate through the phosgene through hole 9 from top to bottom. At the lower outlet 2 of the phosgene through hole 9, 10 powder outlet holes 3 are arranged, and the powder outlet holes 3 are divided into two groups and symmetrically arranged at two sides of the lower outlet 2. The ten-point powder feeding mode has the advantages that the number of the powder feeding holes 8 is increased, and the hole positions are symmetrically distributed, so that the powder feeding air flow can be effectively utilized to achieve a good molten pool protection effect, the protection air flow has wider and more concentrated action range under the same air flow condition in the designed powder focus position of the nozzle, and the air flow is obviously larger than that of other nozzles, so that the use amount of the protection air is reduced.
Example 4
As shown in fig. 1-5, a cooling water loop is horizontally arranged at the middle lower part in the nozzle body 1, and the cooling water loop is positioned at one side of the powder feeding passage far away from the phosgene through hole 9. The cooling water loop comprises two water inlet pipelines 10 and one water outlet pipeline 11, and a water inlet 12 and a water outlet 4 are respectively arranged on the side of the nozzle body 1.
Two water inlets 12 are formed in the same side of the nozzle body 1, a water outlet 4 is formed in the other side of the nozzle body 1, two water inlet pipelines 10 which are respectively communicated with the two water inlets 12 are arranged in the nozzle body 1, and a water outlet pipeline 11 is arranged and is communicated with the two water inlet pipelines 10 to form a cooling water loop. According to the invention, the water cooling loops are independently arranged on the nozzle body 1, and the cooling water loops in the nozzle module are close to the nozzle opening with the spacing of only 3mm, so that the reasonable cooling water flow is ensured, the cooling effect is improved, and the continuous cladding is suitable for continuous cladding, and the burning loss of the nozzle opening is avoided.
Example 5
As shown in fig. 5, the nozzle body 1 is connected with a laser cladding nozzle through a connecting end 13, and a threaded through hole 5 for connecting with the connecting end is formed in the nozzle body 1.
The connecting end 13 is arranged on the laser cladding spray head, after the connecting end 13 is arranged, the nozzle body 1 penetrates through the threaded through holes 5 through four positioning bolts and then is fixed with the mounting threaded holes 14 of the connecting end 13, the nozzle body 1 and the connecting end 13 are fixed, and the modularized arrangement can facilitate the rapid replacement of the nozzle bodies 1 of different types.
Powder discharge condition and cladding effect during cladding of the nozzle of the invention:
as shown in fig. 7 and 9, the powder emitted by the nozzle is multi-path powder flow, the powder is fine and concentrated, the powder utilization rate is high, the protection effect of a molten pool is strong, the surface of a cladding layer is smooth and bright, and the whole cladding effect is good.
As shown in fig. 8 and 10, in the powder discharge condition of the two-point nozzle, the powder flows coarsely and disperses, the powder feeding amount is required to be very large to ensure the cladding thickness, the cladding layer is thinner, the protection effect is poor, the surface is bluish and coarse, and the cladding effect is more obvious than the cladding effect gap of the nozzle.
The ten-point powder feeding mode adopted by the invention has the advantages of more centralized and uniform powder discharge and better cladding effect.
Claims (10)
1. The utility model provides a hole laser cladding nozzle, its characterized in that, includes nozzle body (1), annular powder feeding groove (6) have been seted up at nozzle body (1) top, be provided with powder blocking piece (7) in annular powder feeding groove (6), a plurality of powder feeding holes (8) have been seted up in annular powder feeding groove (6), a plurality of with powder outlet hole (3) that form the powder feeding passageway are seted up to nozzle body (1) bottom with powder feeding hole (8) intercommunication.
2. The small-bore laser cladding nozzle according to claim 1, wherein the annular powder feeding groove (6) is a groove with an upward opening, a plurality of powder blocking blocks (7) are arranged on the groove bottom annular array of the annular powder feeding groove (6), and each powder feeding hole (8) is provided with two powder blocking blocks (7) along two sides in the groove of the annular powder feeding groove (6).
3. The small-bore laser cladding nozzle according to claim 1, wherein 10 powder feeding holes (8) and 10 powder discharging holes (3) are arranged.
4. The small-bore laser cladding nozzle according to claim 1, wherein a phosgene through hole (9) is formed in the nozzle body (1), the phosgene through hole (9) and the annular powder feeding groove (6) are coaxially arranged, and the inner shape of the phosgene through hole (9) is large in top and small in bottom.
5. The small-bore laser cladding nozzle as claimed in claim 4, wherein the powder outlet hole (3) is annularly arranged along the lower outlet (2) of the phosgene through hole (9) and symmetrically arranged along the bottom of the nozzle body (1).
6. The small-bore laser cladding nozzle according to claim 1, wherein a cooling water loop is horizontally arranged at the middle lower part in the nozzle body (1), and the cooling water loop is positioned at one side of the powder feeding passage far away from the phosgene through hole (9).
7. The small-bore laser cladding nozzle according to claim 6, wherein the cooling water loop comprises two water inlet pipelines (10) and one water outlet pipeline (11), and a water inlet (12) and a water outlet (4) are respectively arranged on the side of the nozzle body (1).
8. The small-bore laser cladding nozzle according to claim 1, wherein the nozzle body (1) is connected with a laser cladding nozzle through a connecting end, and a threaded through hole (5) for connecting with the connecting end 13 is formed in the nozzle body (1).
9. A small inner hole laser cladding nozzle according to claim 1, wherein the nozzle body (1) is made of chromium zirconium copper.
10. A small bore laser cladding nozzle according to claim 1, wherein the minimum inner diameter Kong Rong of the nozzle is of dimensions Φ80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211524224.3A CN116043211A (en) | 2022-11-30 | 2022-11-30 | Small inner hole laser cladding nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211524224.3A CN116043211A (en) | 2022-11-30 | 2022-11-30 | Small inner hole laser cladding nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN116043211A true CN116043211A (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211524224.3A Pending CN116043211A (en) | 2022-11-30 | 2022-11-30 | Small inner hole laser cladding nozzle |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020020734A1 (en) * | 2000-06-23 | 2002-02-21 | Reinhold Meier | Method of repairing metallic components |
| CN103276390A (en) * | 2013-05-31 | 2013-09-04 | 重庆大学 | Powder paving device of metal powder laser melting and forming system |
| CN104694922A (en) * | 2015-03-30 | 2015-06-10 | 湖南大学 | Ring hole type laser coaxial powder feeding nozzle |
| CN208617979U (en) * | 2018-07-18 | 2019-03-19 | 申科滑动轴承股份有限公司 | A kind of laser melting coating bitubular powder feeder |
| CN110055528A (en) * | 2019-05-23 | 2019-07-26 | 西安交通大学 | A kind of annular coaxial dust feeder for ultrahigh speed laser melting coating |
-
2022
- 2022-11-30 CN CN202211524224.3A patent/CN116043211A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020020734A1 (en) * | 2000-06-23 | 2002-02-21 | Reinhold Meier | Method of repairing metallic components |
| CN103276390A (en) * | 2013-05-31 | 2013-09-04 | 重庆大学 | Powder paving device of metal powder laser melting and forming system |
| CN104694922A (en) * | 2015-03-30 | 2015-06-10 | 湖南大学 | Ring hole type laser coaxial powder feeding nozzle |
| CN208617979U (en) * | 2018-07-18 | 2019-03-19 | 申科滑动轴承股份有限公司 | A kind of laser melting coating bitubular powder feeder |
| CN110055528A (en) * | 2019-05-23 | 2019-07-26 | 西安交通大学 | A kind of annular coaxial dust feeder for ultrahigh speed laser melting coating |
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