CN203999818U - A kind of laser wide-band cladding inner-light powder-supplying device - Google Patents
A kind of laser wide-band cladding inner-light powder-supplying device Download PDFInfo
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- CN203999818U CN203999818U CN201420429249.XU CN201420429249U CN203999818U CN 203999818 U CN203999818 U CN 203999818U CN 201420429249 U CN201420429249 U CN 201420429249U CN 203999818 U CN203999818 U CN 203999818U
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Abstract
The utility model discloses a kind of laser wide-band cladding inner-light powder-supplying device, comprise a protection air-casing, this protection air-casing is divided into point powder section of the rectangle that is positioned at rear portion and is positioned at the rectification section of anterior trapezoidal shape, in described point of powder section, central authorities are provided with a location powder separator, the both sides of locating powder separator in described point of powder section are arranged with two protection tracheaes in parallel, the exit end of described protection tracheae is communicated with described rectification section, the end of described location powder separator is provided with some points of tube cells, described some points of tube cells are parallel to each other and run through described rectification section, a rectification cover is set in the outside of all points of tube cells, powder separator inside, described location dendritic that point tube cell and joint form of serving as reasons, point powder passage of one point of n.The utility model make powder bundle can be not too early in dropping process and light beam interfere, beam reflection loss is little, powder using efficiency is high, can realize round-trip scanning and be shaped, molten road homogeneous microstructure, overlap joint quality are good.
Description
Technical field
The utility model relates to laser melting coating processing technique field, particularly relates to a kind of laser wide-band cladding inner-light powder-supplying device and powder delivery method.
Background technology
Laser melting coating, uses high energy laser beam to produce metallurgical binding by metallic substance fusing and with basic material, is widely used in material surface strengthening, reparation and modification.For some large-scale workpieces, as occasions such as macrotype axes series parts surface, large-area planar laser melting coatings, utilize the inswept area of broad band laser run-down large, can greatly improve cladding efficiency, and improve quality of cladding layer owing to having reduced overlap joint number of times two.
Existing laser wide-band cladding method is: solid broad band laser bundle is irradiated to work surface and forms molten bath, synchronously sends the powder bundle of same thin-and-long to molten bath from a side or the both sides of light beam.This one-sided powder-feeding method is in the time that scanning direction is reverse, and the orientation of the relative laser beam of powder bundle is also reverse, is therefore unfavorable for that round-trip scanning is shaped.And bilateral powder feeding is due to powder bundle symmetry, scan no matter forward, backward relative laser beam constant bearing, eliminate the beam-shaping effect that round-trip scanning is shaped.Above-mentioned two schemes is from the powder feeding of laser beam outer inclination, its deficiency be in:
(1) powder bundle is all to send into light beam by laser beam outer inclination, powder bundle first interferes with laser beam falling into before hot spot aloft, produces and absorbs and diffuse-reflectance, makes to expose to the hot spot light intensity decreasing on finished surface, the smooth degree in molten road is not good, and subsurface defect increases.
(2) powder of different grain size and shape is subject to the impact that the parameter fluctuations such as mobility, powder sending quantity and homogeneity in each tube cell change; powder bundle is by tilting after powder-feeding nozzle ejection; powder is subject to again mass force, gas carries the impact such as pressure, gravity; add the effect of protection gas and optical pressure; powder is parabolic shape; each powder inertia, skyborne movement locus and drop point all can be inconsistent, and these all cause powder to fall region change greatly and fluctuation.Send offshoot program for bilateral, powder bundle separately position, divide equally powder amount error, spray dynamics evenly, symmetry etc. is not the same, converge precision and be difficult to stable.In powder moving process, some powders fall into hot spot, but it is inhomogeneous to enter density distribution after light beam; Some powders just fall for entering light beam, and what also have may, through falling again and be bonded on Pang Rong road, molten bath after light beam heat absorption, cause waste and the environmental pollution of a large amount of powder.
(3) in the cladding method of existing broadband, general employing of the energy of hot spot is uniformly distributed, and the heat radiation in the time being shaped of the both sides in Er Rong road is very fast, causes energy shortage herein, causes border to merge not good, the molten road of impact overlap joint quality.
Patent (ZL200610116413.1) discloses a kind of laser light internal powder conveying cladding method, the circular solids laser beam that laser apparatus is occurred is changed to the taper focused beam of hollow, powder conveying pipe is arranged on the hollow part of laser beam, has realized the vertical forward powder feeding of single tube cell.Patent (ZL201310300229.2) discloses a kind of laser broadband inner-light powder-supplying cladding method, has realized a kind of scheme of carrying out powder feeding cladding in the broad band laser bundle inside of hollow.Inner-light powder-supplying technology is powder feeding mode comparatively advanced in laser cladding forming, and powder conveyer is positioned at laser melting coating shaven head portion, and surrounding is wrapped up by laser beam, to the inner spray feed Metal Melting whiting of laser molten pool end.The utility model is to provide a kind of powder conveyer for laser wide-band cladding inner-light powder-supplying.
Utility model content
For prior art above shortcomings, the problem that the utility model solves is: a kind of powder conveyer for laser wide-band cladding inner-light powder-supplying is provided.
A kind of laser wide-band cladding inner-light powder-supplying device, comprise a protection air-casing, this protection air-casing is divided into point powder section of the rectangle that is positioned at rear portion and is positioned at the rectification section of anterior trapezoidal shape, in described point of powder section, central authorities are provided with a location powder separator, the both sides of locating powder separator in described point of powder section are arranged with two protection tracheaes in parallel, the exit end of described protection tracheae is communicated with described rectification section, the end of described location powder separator is provided with some points of tube cells, described some points of tube cells are parallel to each other and run through described rectification section, a rectification cover is set in the outside of all points of tube cells, powder separator inside, described location dendritic that point tube cell and joint form of serving as reasons, point powder passage of one point of n.
Preferably, described n is more than 2 integer.
Preferably, described n >=4 o'clock, adopt the mode of multistage point of powder.
Preferably, described location powder separator connects powder feeding machine by powder conveying pipe.
Preferably, the molten bath of described point of tube cell end sensing laser melting coating.
Preferably, described in every, the inlet end place of point tube cell is provided with the knob that regulates powder outlet quantity.
Preferably, described location powder separator adds man-hour left processing hole by screw shutoff in drilling.
Compared with prior art, the utlity model has following advantage:
(1) the laser wide-band cladding inner-light powder-supplying device that the utility model provides, when use, powder bundle can be not too early in dropping process and light beam interfere, beam reflection loss is little;
(2) powder light inlet standard, straight, thin, very, is evenly distributed, and diffusibleness is little, and utilization ratio is high;
(3) the coupling precision of powder and laser beam is high, can realize round-trip scanning and be shaped, and molten road homogeneous microstructure, overlap joint quality are good.
Brief description of the drawings
For the technical scheme in the utility model embodiment is more clearly described, to the accompanying drawing of required use in embodiment be introduced simply below, apparently, the accompanying drawing the following describes is only some embodiment that record in the utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the one-piece construction diagrammatic elevation view of the utility model inner-light powder-supplying device;
Fig. 2 is the one-piece construction diagrammatic side view of the utility model inner-light powder-supplying device;
Fig. 3 is the one-piece construction diagrammatic top view of the utility model inner-light powder-supplying device;
Fig. 4 is the shaft side figure of the utility model inner-light powder-supplying device preferred embodiment;
Fig. 5-1 is for protecting the structural representation of air-casing preferred embodiment in the utility model;
Fig. 5-2 are for protecting the structural representation front view of air-casing the second embodiment in the utility model;
Fig. 5-3 are for protecting the structural representation side-view of air-casing the second embodiment in the utility model;
Fig. 6 is the internal structure schematic diagram of locating powder separator preferred embodiment in the utility model;
Fig. 7-1,7-2,7-3 are that the utility model inner-light powder-supplying device divides powder scheme schematic diagram;
Fig. 8-1,8-2 are the schematic diagram of the even powder feeding of the utility model inner-light powder-supplying device;
Fig. 9-1,9-2 are the external structure stereographic map of the utility model inner-light powder-supplying device preferred embodiment.
Wherein:
1, protection air-casing; 1-1, point powder section; 1-2, rectification section;
2, location powder separator; 3, rectification cover; 4-1 & 4-2, protection tracheae;
5, powder conveying pipe; 6-1～6-5, screw; 7, knob; 8, divide tube cell;
9, powder bundle; 10, amyloid plaque.
Embodiment
To be clearly and completely described the technical solution of the utility model by embodiment below.Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model discloses a kind of laser wide-band cladding inner-light powder-supplying device; described inner-light powder-supplying device comprises a protection air-casing 1, and this protection air-casing 1 is divided into point powder section 1-1 of the rectangle that is positioned at protection air-casing 1 rear portion and is positioned at the rectification section 1-2 of the scalariform of protection air-casing 1 front portion.In described point of powder section 1-1, central authorities are provided with a location powder separator 2; the both sides of locating powder separator 2 in described point of powder section 1-1 are arranged with two protection tracheae 4-1 and 4-2 in parallel; the exit end of described protection tracheae 4-1 and 4-2 is communicated with described rectification section 1-2; the end of described location powder separator 2 is provided with some points of tube cells 8; described some points of tube cells 8 are parallel to each other and run through described rectification section 1-2, and a rectification cover 3 is set in the outside of all points of tube cells 8.
Wherein, described location powder separator 2 connects powder feeding machine by powder conveying pipe 5, and described point of tube cell 8 ends point to the molten bath of laser melting coating.
As shown in Fig. 5-1; protection air-casing 1 is for installing location powder separator 2; two protection tracheae 4-1 and 4-2 are installed according to the method described above on protection air-casing 1; make to protect the inner die cavity of air-casing 1 to change by protection tracheae 4-1 and 4-2 input protection gas; again by the variation of protection air-casing 1 inner die cavity; realize protection gas is carried out to rectification compression; from the protection gas curtain of exit ejection rectangular ring; the laser cladding powder that point tube cell is gushed out carries out shaping compression; realize powder standard, straight, thin, very; be evenly distributed, the angle of divergence is little.As the second embodiment of protection air-casing, the design of protection air-casing has been enumerated another kind as shown in Fig. 5-2 and Fig. 5-3 protection air-casing structure, and the front view of air-casing is protected for this embodiment in Fig. 5-2, and the side-view of air-casing is protected for this embodiment in Fig. 5-3.The protection gas mode of movement of the protection air-casing shown in Fig. 5-1 is left and right directions; two protection tracheaes lay respectively at the left and right sides of locating powder separator; the protection gas mode of movement of the protection air-casing shown in Fig. 5-2 and Fig. 5-3 is fore-and-aft direction, and two protection tracheaes lay respectively at the both sides up and down of locating powder separator.The example structure of above-mentioned two kinds of protection air-casings is similar, and function is identical, belongs to equally the utility model institute protection domain.
The utility model adopts the dispensing mode of one point of n, and known according to stream solid coupling analysis, while utilizing gas as carrier conveying powder, powder has certain angle of divergence in tube cell exit.As shown in Fig. 8-1, utilize the angle of divergence of powder in tube cell exit, control the outlet spacing of tube cell and the diameter of powder conveying pipe, the powder bundle 9 that just can realize adjacent two powder conveying pipe ejections joins mutually, realizes the inner cladding powder of carrying uniformly in laser wide-band cladding molten bath.Therefore, that powder separator 2 inside, above-mentioned location are made up of point tube cell and joint is dendritic, point powder passage of one point of n, and n is more than or equal to 2 integer.In the time of n=2, point powder scheme, as shown in Fig. 7-1, is divided into b1 and b2 by a.Wherein, a is powdering inlet, and b, c are dust outlet, below all with.In the time of n=3, point powder scheme, as shown in Fig. 7-2, is divided into b1, b2 and b3 by a.In the time of n >=4, can adopt the mode of multistage point of powder, for example: for one point of n, when n is 2 multiple, as shown in Fig. 7-3, be divided into b1 and b2 by a, and then be divided into c1 and c2, b2 are divided into c3 and c4 by b1, as long as ensure that export pipeline can ensure the consistent of each tube cell outlet amount of powder about entrance pipe rotational symmetry, export the spacing between tube cell by adjusting, realize different in width broad band laser molten bath delivered inside powder.For one point of n, when n is odd number, as one point five, can first one-to-two, then two point five (one-to-two and one point three arranged side by side) etc., will not enumerate all situations of n herein.It should be noted that in the time of one point three, can, by the size of a powder delivery caliber in the middle of controlling, make it less than two ends powder delivery caliber, by methods such as calculating, emulation, the powder outlet quantity that just can realize three flour extraction pipes be consistent.
The location powder separator 2 adopting in the utility model preferred embodiment comes at length powder delivery method of the present utility model to be made an explanation with point powder scheme of a point four.
As shown in Fig. 6 and Fig. 7-3, location powder separator 2 in the utility model is realized the powder that powder conveying pipe 5 is sent to and is carried out one-to-two, two point four, finally send into the molten bath of laser melting coating by four pieces points of tube cells 8 arranged side by side, under the effect of protection gas, owing to will forming 3 overlapping parts between the powder bundle of sending by 4 pieces points of tube cells 8, therefore final amyloid plaque 10 is rectangular and long, wide, thick even, can be accurately for powder feeding be carried out in the molten bath of rectangular laser cladding, powder bundle 9 can be not too early in the process falling and light beam interfere, beam reflection loss is little: powder light inlet standard, directly, carefully, very, be evenly distributed, diffusibleness is little, utilization ratio is high, the coupling precision of powder and laser beam is high, can realize round-trip scanning and be shaped, and molten road homogeneous microstructure, overlap joint quality are good.
Above-mentioned rectification cover 3 is arranged on four point tube cell 8 outsides arranged side by side, makes four pieces points of tube cells 8 be distributed in rectification and overlaps 3 inside, and the protection gas in protection air-casing 1 flows along rectification cover 3, and the protection gas curtain that so just can ensure exit is rectangular ring.
Protection tracheae 4-1 is connected protection gas generating unit with 4-2, give protection air-casing 1 delivered inside protection gas, for protection gas is carried in the processing of inner-light powder-supplying laser wide-band cladding.
Powder conveying pipe 5 connects powder feeding machine, gives location powder separator 2 transmission laser cladding powder, for the processing of inner-light powder-supplying laser wide-band cladding provides cladding powder.
Preferably, the utility model embodiment adopts the processing hole that screw 6-1～6-5 stays for shutoff location powder separator drilling machining.
As shown in Fig. 1, Fig. 4 and Fig. 6, in the utility model embodiment, described in every, the inlet end place of point tube cell 8 is provided with the knob 7 that regulates powder outlet quantity.By the screw-in amount of adjusting knob 7, come to divide side by side the powder outlet quantity of tube cell 8 to finely tune to four respectively, to ensure to send the homogeneity of powder.
The utility model is by the requirement design of laser wide-band cladding inner-light powder-supplying, and because inner-light powder-supplying requires higher than the outer powder feeding of light, therefore the utility model powder conveyer also can be used for the outer powder feeding of light.
The utility model embodiment enumerates the machining manufacture of two kinds of above-mentioned location powder separators at this:
1) machining process: adopt drilling method, can facilitate, process accurately powder separator by boring method, then the processing hole staying by carry out shutoff location powder separator drilling machining with screw, as shown in the figure.
2) 3D Method of printing: adopt 3D printing shaping technology, can the above-mentioned location of straight forming powder separator.
The utility model discloses a kind of laser wide-band cladding inner-light powder-supplying device, compared with prior art, the utlity model has following advantage:
(1) the laser wide-band cladding inner-light powder-supplying device that the utility model provides, when use, powder bundle can be not too early in dropping process and light beam interfere, beam reflection loss is little;
(2) powder light inlet standard, straight, thin, very, is evenly distributed, and diffusibleness is little, and utilization ratio is high;
(3) the coupling precision of powder and laser beam is high, can realize round-trip scanning and be shaped, and molten road homogeneous microstructure, overlap joint quality are good.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present utility model or essential characteristic, can realize the utility model with other specific form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the utility model.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should make specification sheets as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (7)
1. a laser wide-band cladding inner-light powder-supplying device, it is characterized in that: comprise a protection air-casing, this protection air-casing is divided into point powder section of the rectangle that is positioned at rear portion and is positioned at the rectification section of anterior trapezoidal shape, in described point of powder section, central authorities are provided with a location powder separator, the both sides of locating powder separator in described point of powder section are arranged with two protection tracheaes in parallel, the exit end of described protection tracheae is communicated with described rectification section, the end of described location powder separator is provided with some points of tube cells, described some points of tube cells are parallel to each other and run through described rectification section, a rectification cover is set in the outside of all points of tube cells, powder separator inside, described location dendritic that point tube cell and joint form of serving as reasons, point powder passage of one point of n.
2. laser wide-band cladding inner-light powder-supplying device according to claim 1, is characterized in that: described n is more than 2 integer.
3. laser wide-band cladding inner-light powder-supplying device according to claim 2, is characterized in that: described n >=4 o'clock, adopt the mode of multistage point of powder.
4. laser wide-band cladding inner-light powder-supplying device according to claim 1, is characterized in that: described location powder separator connects powder feeding machine by powder conveying pipe.
5. laser wide-band cladding inner-light powder-supplying device according to claim 1, is characterized in that: described point of tube cell end points to the molten bath of laser melting coating.
6. laser wide-band cladding inner-light powder-supplying device according to claim 1, is characterized in that: described in every, the inlet end place of point tube cell is provided with the knob that regulates powder outlet quantity.
7. laser wide-band cladding inner-light powder-supplying device according to claim 1, is characterized in that: described location powder separator adds man-hour left processing hole by screw shutoff in drilling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429249.XU CN203999818U (en) | 2014-07-31 | 2014-07-31 | A kind of laser wide-band cladding inner-light powder-supplying device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420429249.XU CN203999818U (en) | 2014-07-31 | 2014-07-31 | A kind of laser wide-band cladding inner-light powder-supplying device |
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Cited By (5)
| 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 |
| CN108193204A (en) * | 2017-12-28 | 2018-06-22 | 中国科学院力学研究所 | A kind of laser melting coating powder-supplying spray head and powder feeding amount control method |
| CN111074270A (en) * | 2020-01-10 | 2020-04-28 | 丹阳市珠峰光电科技有限公司 | Full water-cooling high-power broadband coaxial laser cladding nozzle |
| CN113909504A (en) * | 2021-10-29 | 2022-01-11 | 南京中科煜宸激光技术有限公司 | Coaxial broadband powder feeding device for laser cladding additive manufacturing |
| CN116536665A (en) * | 2023-07-06 | 2023-08-04 | 矿冶科技集团有限公司 | Method for rapidly preparing laser cladding functionally gradient coating and coating obtained by same |
-
2014
- 2014-07-31 CN CN201420429249.XU patent/CN203999818U/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| CN108193204A (en) * | 2017-12-28 | 2018-06-22 | 中国科学院力学研究所 | A kind of laser melting coating powder-supplying spray head and powder feeding amount control method |
| CN111074270A (en) * | 2020-01-10 | 2020-04-28 | 丹阳市珠峰光电科技有限公司 | Full water-cooling high-power broadband coaxial laser cladding nozzle |
| CN113909504A (en) * | 2021-10-29 | 2022-01-11 | 南京中科煜宸激光技术有限公司 | Coaxial broadband powder feeding device for laser cladding additive manufacturing |
| CN116536665A (en) * | 2023-07-06 | 2023-08-04 | 矿冶科技集团有限公司 | Method for rapidly preparing laser cladding functionally gradient coating and coating obtained by same |
| CN116536665B (en) * | 2023-07-06 | 2023-09-22 | 矿冶科技集团有限公司 | Method for rapidly preparing laser cladding functionally gradient coating and coating obtained by same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170731 |