CN203999815U - Laser coating and powder feeding nozzle - Google Patents
Laser coating and powder feeding nozzle Download PDFInfo
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- CN203999815U CN203999815U CN201420414532.5U CN201420414532U CN203999815U CN 203999815 U CN203999815 U CN 203999815U CN 201420414532 U CN201420414532 U CN 201420414532U CN 203999815 U CN203999815 U CN 203999815U
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Abstract
The utility model relates to a kind of laser coating and powder feeding nozzle, comprises nozzle body, the joint pin for clamping in laser system and intermediate plate.Described nozzle body is connected with described joint pin, has the through hole that runs through upper and lower in described joint pin.Described nozzle body is provided with into powder passage, water-cooling channel, outlet passageway and lower powder groove; Described intermediate plate and described lower powder groove form lower powder passage, describedly enter that powder passage top is communicated with described through hole, bottom and described lower powder channel connection, described water-cooling channel is arranged between described nozzle body base plate and lower powder passage, and described outlet passageway is arranged on the top of described lower powder passage.By the described textural association that enters powder passage, described lower powder passage, described water-cooling channel and described outlet passageway; the utility model in laser cladding process rapidly effective cooling powder-feeding nozzle, extend work-ing life of powder-feeding nozzle, protection cladding layer, reduce even to remove and splash and flame avoids damaging laser device.
Description
Technical field
The utility model relates to chemical plating device field, is specifically related to a kind of laser coating and powder feeding nozzle.
Background technology
Laser melting coating is a kind of new process for modifying surface, and it is by add cladding material at substrate surface, and utilizes the laser beam of high-energy-density to make it the method for consolidation together with substrate surface thin layer, in substrate surface, forms and its filling cladding layer that is metallurgical binding.Compare with surface modification modes such as built-up welding, spraying, plating, vapour depositions, laser melting coating has that extent of dilution is little, dense structure, coating and matrix is combined, be applicable to that cladding material is many, granularity and the feature such as content is large, so laser melting and coating technique application prospect is very wide.Laser melting coating is divided into preset laser cladding and synchronous mode laser melting coating, and what laser melting coating system mainly adopted at present is side direction synchronous powder feeding system method, is about to metal-powder and directly sends in laser beam as cladding material, and feed and cladding are completed simultaneously.Because technique be take metal-powder as raw material, adopt high-power, high-octane laser beam as thermal source, thereby in powder feeding, adopt the laser sintered metal-powder rapid melting coagulation forming that makes; And the quality of Forming Quality is not only relevant with laser technical parameters with material characteristic, more depend on the homogeneity that falls into powder in molten bath.Traditional side direction synchronous powder feeding system technique is by Dan Fen road, metal-powder to be delivered to matrix from laser beam one side, and causes the cross-sectional area of cladding layer to be ellipse arc, has had a strong impact on its planarization.Secondly, in cladding process, due to very near apart from molten bath, the thermal radiation that powder-feeding nozzle is subject to is very large, has seriously shortened its life-span.And valuable high-power semiconductor laser instrument also can be because of producing flame in laser cladding process and the sustain damage of splashing.
For what address the above problem, Chinese patent 201020547283.9 provides a kind of cooling laser melting-painting nozzle of being convenient to, and is provided with beam channel, powder feeding passage and by the cooling cavity forming between beam channel periphery and each powder feeding passage periphery in its nozzle core; The upper end of this nozzle core has with powder inlet and the water outlet being communicated with cooling cavity, the lower end of powder feeding channel connection and has and the meal outlet of powder feeding channel connection and the water-in being communicated with cooling cavity.This laser melting-painting nozzle adopts that precipitation injects cooling self temperature of the method for cooling cavity, the method that diminishes gradually to powder feeding mouth from meal outlet improves powder delivery uniformity coefficient.But because this laser melting-painting nozzle is taper, below, temperature highest point cooling cavity volume is around minimum to cause it, can not hold enough water, cannot reach cooling performance.And this laser melting-painting nozzle is the in the situation that of non-perpendicular powder feeding, the speed that falls due to gravity reason, powder is different is difficult to guarantee that the powder that each meal outlet flows out is consistent; Meal outlet also can limit powder mass flow to powder feeding mouth this structure that diminishes gradually, is unfavorable for improving melting the speed of covering.And this laser melting-painting nozzle structure relative complex, increased manufacture difficulty.
Summary of the invention
The problem of the prior art that the utility model need to solve is: laser cladding process of the prior art send, and evenly powder feeding of powder conveyer, and can be subject to thermal-radiating infringement, and also can produce can flame and splash.
Specifically, the utility model proposes following technical scheme.
The utility model provides a kind of laser coating and powder feeding nozzle, comprises nozzle body, the joint pin for clamping in laser system, and described nozzle body (1) is connected with described joint pin (2), has the through hole (18) that runs through upper and lower in described joint pin (2).Described laser coating and powder feeding nozzle also comprises intermediate plate (3).Described nozzle body (1) is provided with water-cooling channel (7), lower powder passage (6), outlet passageway (8) and lower powder groove (15); Described intermediate plate (3) and described lower powder groove (15) form lower powder passage (6), describedly enter that powder passage (5) top is communicated with described through hole (18), bottom is communicated with described lower powder passage (6), described water-cooling channel (7) is arranged between described nozzle body base plate (10) and lower powder passage (6), and described outlet passageway (8) is arranged on the top of described lower powder passage (6).
Preferably, on described lower powder passage (6), be provided with shunting boss (16).
Preferably, described outlet passageway (8) is provided with air inlet port (9) and air channel.
Preferably, described in enter powder passage (5) and described lower powder groove (15) is tangent, it is upper that described shunting boss (16) is arranged on described lower powder groove (15), described lower powder groove (15) has the gradient from back to front, its thickness is by thick attenuation.
Preferably, upper end cover (4) and described intermediate plate (3) are fixedly mounted on the upper described outlet passageway (8) that forms of described nozzle body (1).It is upper that described air inlet port (9) is arranged on described upper end cover (4), and described air channel is arranged on described intermediate plate (3) upper surface, has the gradient from back to front, and its thickness is by thick attenuation.
Preferably, described shunting boss (16) is arranged on the position near described lower powder groove (15) front end, and shape is diagonal angle symmetry.
Preferably, described water-cooling channel (7) is provided with water-in (13) and water outlet (14).
Preferably, described joint pin (2) is right cylinder, is provided with outside screw, and described joint pin (2) is connected with described nozzle body (1) by outside screw; Described through hole (18) is arranged on the central position of described joint pin (2).
Laser coating and powder feeding nozzle of the present utility model is provided with into powder passage, water-cooling channel, lower powder passage and outlet passageway.Due to the meal outlet of powder feeder with the through hole of joint pin is connected, through hole and enter powder channel connection, enter powder passage and the tangent connection of powder spout, thus powder from meal outlet flow out, by joint pin, enter powder passage, powder spout can unimpeded harmless dropping on matrix.And lower powder passage has the gradient, cushioned the planing speed of powder, it is distributed in landing process even gradually, the nose thickness of lower powder passage is 1-2mm.At lower powder passage, approach front position and be provided with and have shunting boss at least, shunting boss is the Polygons of diagonal angle symmetry, such as rhombus, square, isosceles triangle, equilateral triangle, regular pentagon, regular hexagon etc.; A shunting boss can be divided into many equal portions by the powder of process; The multiply powder of these equal portions drops on matrix and overlaps, and has just formed smooth powder bed.Water-cooling channel approaches the position in molten bath most in the bottom of powder-feeding nozzle, the water-in of water-cooling channel is all connected with exterior cooling system with water outlet, can absorb heat, cooling whole powder-feeding nozzle that molten bath radiation produces.Outlet passageway is position on powder-feeding nozzle, and its air inlet port is connected with external air source, can in powder feeding, blow out protection gas protection cladding layer, can also suppress splashing and flame, protection laser device in cladding process.
Employing of the present utility model is to carry out effectively to reach rapidly cooling performance into the structure of powder passage, lower powder passage, water-cooling channel from top to bottom, has extended the outlet passageway in work-ing life of laser coating and powder feeding nozzle; By outlet passageway manufacture protection gas, carry out cladding layer, reduce splashing and flame in cladding process simultaneously, protected laser device.The utility model is simple in structure, cost is low, has on the one hand extended nozzle life, has improved powder feeding quality, and the flare while having reduced on the other hand laser melting coating and splashing has been protected cladding layer and expensive laser device.
Below in conjunction with accompanying drawing and each embodiment, the utility model and useful technique effect thereof are elaborated.
Accompanying drawing explanation
Figure 1A is the structure sectional view of embodiment 1;
Figure 1B is the operation chart of the generation cladding layer of embodiment 1 in laser cladding process.
Fig. 2 is the structural representation of embodiment 1.
In figure, 1. nozzle body, 2. joint pin, 3. intermediate plate, 4. upper end cover, 5. enter powder passage, 6. descend powder passage, 7. water-cooling channel, 8. outlet passageway, 9. air inlet port, 10. base plate, 11. cladding layers, 12. matrixes, 13. water-ins, 14. water outlets, 15. times powder grooves, 16. shunting boss, 17. side plates, 18. through holes.
Embodiment
As mentioned above; the purpose of this utility model is: by entering textural association from top to bottom of powder passage, lower powder passage, water-cooling channel and adding the up-down structure of joining outlet passageway and lower powder passage, combine; in laser cladding process rapidly effective cooling powder-feeding nozzle, extend work-ing life of powder-feeding nozzle, protection cladding layer, reduce even to remove and splash and flame avoids damaging laser device.
Embodiment 1
Described in Figure 1A and Fig. 2, the utility model provides a kind of laser coating and powder feeding nozzle, comprises nozzle body 1, the joint pin for clamping in laser system 1, intermediate plate 3 and upper end cover 4.Described joint pin 2 for right cylinder, be provided with outside screw, the bottom of described joint pin 2 is connected with described nozzle body 1 by outside screw; In described joint pin 2, have the through hole 18 that runs through upper and lower, described through hole 18 is arranged on the central position of described joint pin 2, and the meal outlet of described through hole 18 upper ends and external powder feeder is connected.Described nozzle body 1 is provided with water-cooling channel 7, lower powder passage 6, outlet passageway 8 and lower powder groove 15.Described intermediate plate 3 and described lower powder groove 15 form lower powder passage 6, are being provided with the shunting boss 16 of 2 rhombuses near described lower powder groove 15 front ends, and described lower powder groove 15 has the gradient from back to front, and its thickness is 1.5mm by thick attenuation, nose thickness.Describedly enter that powder passage 5 tops are communicated with described through hole 18, bottom is communicated with described lower powder passage 6, and described in enter powder passage 5 lower port and described lower powder groove 15 rear ends are tangent.Described upper end cover 4 is mounted on intermediate plate 3 tops, described intermediate plate 3 and described upper end cover 4 are connected by screw and are fixed on described nozzle body 1, and described intermediate plate 3 and described upper end cover 4 form described outlet passageway 8 with the side plate 17 of described nozzle body above described lower powder groove 15.On described upper end cover 4, be provided with air inlet port 9, described air inlet port 9 is connected with external air source.On described intermediate plate 3 upper surfaces, be provided with air channel, described air channel has the gradient from back to front, and its thickness is 1.2mm by thick attenuation, nose thickness.Described water-cooling channel 7 is arranged between described nozzle body base plate 10 and lower powder passage 6, comprises water-in 13 and water outlet 14, described water-in 13 and the external cooling system of water outlet 14.
Shown in Figure 1A and Figure 1B, while utilizing the laser coating and powder feeding nozzle of embodiment 1 to carry out laser coating and powder feeding to powder, first will send utilize described joint pin 2 described nozzle body 1 clamping in laser melting coating system and adjust distance and the angle of described laser coating and powder feeding nozzle and workpiece to be processed matrix 12 and laser beam.While starting to carry out laser melting coating, the powder that powder feeder is sent from described joint pin 2 flow into be attached thereto described in enter powder passage 5, from described, enter powder passage 5 and fall into powder passage 6 be attached thereto described again; Because lower powder passage 6 has certain gradient, powder planing speed when 6 landing of lower powder passage cushions to some extent, and makes its distribution even gradually.At powder, be slipped to while approaching described lower powder passage 6 front end and can be split into a plurality of equal portions powder road by the described shunting boss 16 of 2 rhombuses.The multiply equal portions flow of powder that powder passage 6 flows out from described drops on matrix 12 and overlaps, and forms smooth powder bed.Laser beam impinges upon on the powder bed of matrix 12 and has formed molten bath, and has produced a large amount of radiations heat energies; The described water-in 13 of described water-cooling channel 7 and the external cooling system of described water outlet 14, inject described laser coating and powder feeding nozzle near the bottom in molten bath by cryogenic liquid, rapid cooling jet, and avoiding it to be subject to thermal radiation affects reduction of service life.External air source is sent shielding gas into outlet passageway 8 by coupled described air inlet port 9; When described laser coating and powder feeding nozzle slips into matrix 17 by powder; the described air channel of described outlet passageway 6 can blow to described molten bath by described shielding gas; stop cladding layer 11 to be oxidized and reduce and even remove the flame above molten bath and splash, to protect laser device.
Embodiment 2
The utility model provides a kind of laser coating and powder feeding nozzle, comprises nozzle body 1, the joint pin for clamping in laser system 1, intermediate plate 3 and upper end cover 4.Described joint pin 2 for right cylinder, be provided with outside screw, the bottom of described joint pin 2 is connected with described nozzle body 1 by outside screw; In described joint pin 2, have the through hole 18 that runs through upper and lower, described through hole 18 is arranged on the central position of described joint pin 2, and the meal outlet of described through hole 18 upper ends and external powder feeder is connected.Described nozzle body 1 is provided with water-cooling channel 7, lower powder passage 6, outlet passageway 8 and lower powder groove 15.Described intermediate plate 3 and described lower powder groove 15 form lower powder passage 6, near described lower powder groove 15 front ends, are being provided with 3 foursquare shunting boss 16, and described lower powder groove 15 has the gradient from back to front, and its thickness is 2mm by thick attenuation, nose thickness.Describedly enter that powder passage 5 tops are communicated with described through hole 18, bottom is communicated with described lower powder passage 6, and described in enter powder passage 5 lower port and described lower powder groove 15 rear ends are tangent.Described upper end cover 4 is mounted on intermediate plate 3 tops, described intermediate plate 3 and described upper end cover 4 are connected by screw and are fixed on described nozzle body 1, and described intermediate plate 3 and described upper end cover 4 form described outlet passageway 8 with the side plate 17 of described nozzle body above described lower powder groove 15.On described upper end cover 4, be provided with air inlet port 9, described air inlet port 9 is connected with external air source.On described intermediate plate 3 upper surfaces, be provided with air channel, described air channel has the gradient from back to front, and its thickness is 1mm by thick attenuation, nose thickness.Described water-cooling channel 7 is arranged between described nozzle body base plate 10 and lower powder passage 6, comprises water-in 13 and water outlet 14, described water-in 13 and the external cooling system of water outlet 14.
While utilizing the laser coating and powder feeding nozzle of embodiment 2 to carry out laser coating and powder feeding to powder, its function, operation are all identical with embodiment 1.
Claims (10)
1. a laser coating and powder feeding nozzle, comprises nozzle body (1), the joint pin for clamping in laser system (2), and described nozzle body (1) is connected with described joint pin (2), has the through hole (18) that runs through upper and lower in described joint pin (2); It is characterized in that: comprise intermediate plate (3); Described nozzle body (1) is provided with into powder passage (5), water-cooling channel (7), outlet passageway (8) and lower powder groove (15); Described intermediate plate (3) and described lower powder groove (15) form lower powder passage (6), describedly enter that powder passage (5) top is communicated with described through hole (18), bottom is communicated with described lower powder passage (6), described water-cooling channel (7) is arranged between described nozzle body base plate (10) and lower powder passage (6), and described outlet passageway (8) is arranged on the top of described lower powder passage (6).
2. laser coating and powder feeding nozzle according to claim 1, wherein, is provided with shunting boss (16) on described lower powder passage (6).
3. laser coating and powder feeding nozzle according to claim 1, wherein, described outlet passageway (8) is provided with air inlet port (9) and air channel.
4. laser coating and powder feeding nozzle according to claim 2, wherein, described outlet passageway (8) is provided with air inlet port (9) and air channel.
5. laser coating and powder feeding nozzle according to claim 2, wherein, described in enter powder passage (5) and described lower powder groove (15) is tangent, described shunting boss (16) is arranged on described lower powder groove (15), described lower powder groove (15) has the gradient from back to front, and its thickness is by thick attenuation.
6. laser coating and powder feeding nozzle according to claim 3, wherein, upper end cover (4) and described intermediate plate (3) are fixedly mounted on the upper described outlet passageway (8) that forms of described nozzle body (1); It is upper that described air inlet port (9) is arranged on described upper end cover (4), and described air channel is arranged on described intermediate plate (3) upper surface, has the gradient from back to front, and its thickness is by thick attenuation.
7. laser coating and powder feeding nozzle according to claim 4, wherein, upper end cover (4) and described intermediate plate (3) are fixedly mounted on the upper described outlet passageway (8) that forms of described nozzle body (1); It is upper that described air inlet port (9) is arranged on described upper end cover (4), and described air channel is arranged on described intermediate plate (3) upper surface, has the gradient from back to front, and its thickness is by thick attenuation.
8. according to the laser coating and powder feeding nozzle described in claim 2 or 4 or 5 or 7, wherein, described shunting boss (16) is arranged on the position near described lower powder groove (15) front end, and shape is diagonal angle symmetry.
9. according to the laser coating and powder feeding nozzle described in claim 1-7, wherein, described water-cooling channel (7) is provided with water-in (13) and water outlet (14).
10. according to the laser coating and powder feeding nozzle described in claim 1-7, it is characterized in that: described joint pin (2) is right cylinder, is provided with outside screw, and described joint pin (2) is connected with described nozzle body (1) by outside screw; Described through hole (18) is arranged on the central position of described joint pin (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414532.5U CN203999815U (en) | 2014-07-25 | 2014-07-25 | Laser coating and powder feeding nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414532.5U CN203999815U (en) | 2014-07-25 | 2014-07-25 | Laser coating and powder feeding nozzle |
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| Publication Number | Publication Date |
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| CN203999815U true CN203999815U (en) | 2014-12-10 |
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| CN201420414532.5U Expired - Fee Related CN203999815U (en) | 2014-07-25 | 2014-07-25 | Laser coating and powder feeding nozzle |
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| CN (1) | CN203999815U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331974A (en) * | 2015-11-20 | 2016-02-17 | 华中科技大学 | Broadband laser fusion covering system and powder feeding nozzle thereof |
| CN105839103A (en) * | 2016-05-16 | 2016-08-10 | 浙江工业大学 | Window type air escape type wide-belt powder feeding nozzle |
| CN106119837A (en) * | 2016-08-08 | 2016-11-16 | 浙江工业大学 | A kind of dual channel convergence type paraxonic powder-feeding nozzle |
| CN107962296A (en) * | 2017-11-27 | 2018-04-27 | 上海交通大学 | A kind of powder feeding structure and laser overlaying welding device for laser overlaying welding |
| CN109536957A (en) * | 2019-01-29 | 2019-03-29 | 南京辉锐光电科技有限公司 | Laser melting-painting nozzle and laser cladding apparatus |
| CN112647077A (en) * | 2020-12-29 | 2021-04-13 | 岗春激光科技（江苏）有限公司 | Laser cladding powder feeding nozzle |
| CN113894292A (en) * | 2021-09-30 | 2022-01-07 | 南京中科煜宸激光技术有限公司 | Powder feeding device and method for broadband laser cladding additive manufacturing |
| CN115287650A (en) * | 2022-08-09 | 2022-11-04 | 南京辉锐光电科技有限公司 | Paraxial broadband powder feeding cladding nozzle and laser cladding equipment |
-
2014
- 2014-07-25 CN CN201420414532.5U patent/CN203999815U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331974A (en) * | 2015-11-20 | 2016-02-17 | 华中科技大学 | Broadband laser fusion covering system and powder feeding nozzle thereof |
| CN105331974B (en) * | 2015-11-20 | 2017-09-26 | 华中科技大学 | A kind of broadband laser cladding system and its powder-feeding nozzle |
| CN105839103A (en) * | 2016-05-16 | 2016-08-10 | 浙江工业大学 | Window type air escape type wide-belt powder feeding nozzle |
| CN106119837A (en) * | 2016-08-08 | 2016-11-16 | 浙江工业大学 | A kind of dual channel convergence type paraxonic powder-feeding nozzle |
| CN107962296A (en) * | 2017-11-27 | 2018-04-27 | 上海交通大学 | A kind of powder feeding structure and laser overlaying welding device for laser overlaying welding |
| CN107962296B (en) * | 2017-11-27 | 2020-07-10 | 上海交通大学 | Powder feeding structure for laser surfacing and laser surfacing device |
| CN109536957A (en) * | 2019-01-29 | 2019-03-29 | 南京辉锐光电科技有限公司 | Laser melting-painting nozzle and laser cladding apparatus |
| CN109536957B (en) * | 2019-01-29 | 2024-04-12 | 南京辉锐光电科技有限公司 | Laser cladding nozzle and laser cladding device |
| CN112647077A (en) * | 2020-12-29 | 2021-04-13 | 岗春激光科技（江苏）有限公司 | Laser cladding powder feeding nozzle |
| CN113894292A (en) * | 2021-09-30 | 2022-01-07 | 南京中科煜宸激光技术有限公司 | Powder feeding device and method for broadband laser cladding additive manufacturing |
| CN113894292B (en) * | 2021-09-30 | 2024-04-12 | 南京中科煜宸激光技术有限公司 | Powder feeding device and method for broadband laser cladding additive manufacturing |
| CN115287650A (en) * | 2022-08-09 | 2022-11-04 | 南京辉锐光电科技有限公司 | Paraxial broadband powder feeding cladding nozzle and laser cladding equipment |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20200725 |
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| CF01 | Termination of patent right due to non-payment of annual fee |