CN103205546A - Method for acquiring stable water film in laser shock processing of blisk - Google Patents
Method for acquiring stable water film in laser shock processing of blisk Download PDFInfo
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- CN103205546A CN103205546A CN2013100408529A CN201310040852A CN103205546A CN 103205546 A CN103205546 A CN 103205546A CN 2013100408529 A CN2013100408529 A CN 2013100408529A CN 201310040852 A CN201310040852 A CN 201310040852A CN 103205546 A CN103205546 A CN 103205546A
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Abstract
The invention provides a method for acquiring a stable water film in laser shock processing of a blisk. According to the invention, in the process of laser shock processing, the position of a nozzle remains unchanged, a laser spot is guaranteed to be unchanged by using a six-degree-of-freedom mechanical arm, a current sprayed by the nozzle is maintained at a contact position of a blade, an included angle between the current and a tangent plane of a contact remains unchanged, so it is guaranteed that the stable water film is obtained at the position of the laser spot; and a to-be-processed blade area is divided into two parts for separate processing so as to guarantee that the stable water film is obtained in the whole process of laser shock processing.
Description
Technical field
The present invention relates to the reiforcing laser impact technology field, refer to that particularly a kind of laser-impact handles the method that obtains to stablize moisture film in the blisk.
Background technology
Laser impact intensified is a kind of novel material surface strengthening technology, can obtain high-amplitude residual compressive stress layer on the metallic article surface, compares with conventional blasting technology the fatigue lifetime of improving product greatly, and its residual compressive stress layer is darker; At the beginning of 21 century, the U.S. is applied to the reinforcement of F101, F119 and F414 engine blade with laser impact technology and makes.
Blisk can be simplified the structure of aircraft engine greatly, can make pneumatic plant loss of weight 30%, improves the thrust-weight ratio of engine, can improve starting efficiency simultaneously, in addition, and the good rigidly of blisk, balance quality height, the work-ing life of having improved pneumatic plant; Yet, the FATIGUE FRACTURE PROBLEMS of the blade edge of blisk has restricted its work-ing life, laser-impact is handled the blisk edge section, can improve the fatigue lifetime of blade greatly, thereby improve the work-ing life of blisk, because blade edge is extremely thin, easy deformation, handle in the blade process at laser-impact, stable moisture film is stable extremely important to the laser-impact effect.
The density of the blade of blisk is big, torsional angle is big, can't disassemble individual curing, in the laser-impact treating processes, the position that often needs the manual regulation nozzle, like this, the form of moisture film just has very big randomness in adjusting each time, influence the consistence for the treatment of process, and greatly reduced processing efficiency; Propose to utilize the interlock with line control unit control water spouting nozzle and laser facula among the domestic patent of invention ZL200510094810.9 " based on the method and apparatus of the novel supercharging water constraint layer of laser impact technology ", realization is to the real-time control of water constraint layer, and is applied to the engine blade laser-impact and handles; In the practical laser shock treatment, need to adopt long focus lens, its focal length generally all surpasses 1 meter, if the mode that adopts laser to move is handled blisk, will cause Controlling System and light path system complicated unusually; Therefore, handle in the blisk at laser-impact, the position of laser facula and the position of water spouting nozzle are fixed, and general linear multi degrees of freedom adopts mechanical manipulator to realize the motion of blisk, handle thereby finish laser-impact, this just needs to adopt suitable technology to obtain stable moisture film.
Summary of the invention
The present invention is directed to the deficiency of above technology, provide a kind of laser-impact to handle the method that obtains to stablize moisture film in the blisk, laser-impact at blisk is handled in the whole process, obtains stable moisture film all the time, has guaranteed the consistence of laser-impact treatment effect.
A kind of laser-impact of the present invention is handled the method that obtains to stablize moisture film in the blisk, the blisk clamping is on the six degree of freedom mechanical manipulator, in the laser-impact treating processes, the position of nozzle remains unchanged, and the position that guarantees laser facula by the six degree of freedom mechanical manipulator remains unchanged, and guarantee to be remained unchanged at the contact position of blade and the angle in current and section, contact by the current of nozzle ejection, guarantee to obtain stable moisture film in the position of laser facula with this; For guaranteeing that whole process all obtains to stablize moisture film, the present invention handles pending leaf area separated into two parts respectively.
Described contact is current and blade surface position contacting, and the distance of laser facula and contact is 15 ~ 20mm, and the plane that the medullary ray of nozzle and middle of the stream line constitute is vertical guide, and laser facula is positioned at this vertical guide, and laser facula is positioned at the below, contact; The section of laser facula position becomes 70 ~ 80 degree angles with horizontal plane; A part of zone with all blades disposes earlier, the blisk that overturns then, and the other part of all blades is handled in continuation, and overlaps in the boundary in this two portions zone.
Implementing beneficial effect of the present invention is: the distance of the contact of laser facula and current and blade is 15 ~ 20mm, makes laser facula avoid near turbulent region, current contact; Pending leaf area separated into two parts is handled respectively, can be guaranteed the fixed distance of laser facula and current contact in the whole laser-impact treating processes; The plane that the medullary ray of nozzle and middle of the stream line constitute is vertical guide, and laser facula is positioned at this vertical guide (as shown in Figure 3), and laser facula is positioned at contact below, has guaranteed that the moisture film centre portions is positioned at laser spot position all the time; The section of laser facula position becomes 70 ~ 80 degree angles (as shown in Figure 5) with horizontal plane, guaranteed under certain flow condition, and the moisture film flow velocity and the flow direction that cover blade surface are also certain, thereby obtain to stablize moisture film.
Description of drawings
Fig. 1: laser-impact is handled the method synoptic diagram that obtains to stablize moisture film in the blisk;
Comprise laser beam, 2 blisks, 3 six degree of freedom mechanical manipulators, 4 moisture films, 5 laser faculas, 6 contacts, 7 current, 8 angles, 9 nozzles after 1 focusing among the figure;
Fig. 2: laser-impact is handled the zone that engine blade need be handled in the blisk;
Comprise among the figure that 21 untreated areas, 22 laser-impacts are handled fringe region;
Fig. 3: the first treatment zone synoptic diagram;
Comprise 23 blisk upper surfaces, 24 first treatment zones, 25 blade upper limbs, 51 laser facula medullary rays, 71 middle of the stream lines, 91 nozzle centerlines, 10 vertical guides among the figure;
Fig. 4: the second treatment zone synoptic diagram;
Comprise 23 blisk upper surfaces, 25 blade upper limbs, 26 second treatment zones among the figure;
Fig. 5: the section of laser facula position and horizontal plane angle synoptic diagram;
Comprise the section of 11 laser facula positions, 12 horizontal planes, 13 angles, 27 blade sections among the figure.
Embodiment
For better setting forth implementation detail of the present invention, the method for moisture film being stablized in acquisition in a kind of laser-impact processing blisk of the present invention below in conjunction with accompanying drawing is elaborated.
A kind of laser-impact of the present invention is handled the method that obtains to stablize moisture film in the blisk, comprises laser beam 1, blisk 2, six degree of freedom mechanical manipulator 3, moisture film 4, laser facula 5, contact 6, current 7, angle 8, nozzle 9 after the focusing.
Laser-impact with the convex surface of the blade 21 of blisk 2 is treated to example, implements the present invention and need carry out laser impact intensified processing to the fringe region 22 of all blades 21 of blisk 2 convex surfaces, as Fig. 1 and Fig. 3 and Fig. 4.
Implement a kind of laser-impact of the present invention and handle the method execution following steps that obtain to stablize moisture film in the blisk:
1) blisk 2 is installed on the six degree of freedom mechanical manipulator 3, the upper surface 23 of blisk up;
2) regulate six degree of freedom mechanical manipulator 3, open nozzle 9, make current 7 spray to the surface of blade 21; Regulate nozzle 9 positions, the angle 8 that makes the section of current 7 and contact 6 is 10 ~ 15 degree; Making laser facula 5 and the distance of the contact 5 of current 7 and blade 21 formation is 15 ~ 20mm; Making the medullary ray of nozzle 9 and plane that current 7 medullary rays constitute is vertical guide 10, and laser facula 5 is positioned at this vertical guide, and laser facula 5 is positioned at 6 belows, contact; Making the section 11 of laser facula 5 positions and the angle 13 of horizontal plane 12 is 70 ~ 80 degree; Can obtain a stable moisture film 4 this moment;
3) at first first treatment zone 24 of blade 21 being carried out laser-impact handles; Remain as the described parameter of step 2 by six degree of freedom mechanical manipulator 3 Controlling System, finish the laser-impact of first treatment zone 24 and handle; Successively all the other all blades are all finished the processing of first treatment zone 24 according to preceding method;
4) then second treatment zone 26 of blade 21 being carried out laser-impact handles; Again install after blisk 2 disassembled, installs the upper surface 23 of blisk down this moment, and below this moment, upper limb 25 was positioned at, as shown in Figure 4, its installation parameter was as described in the step 2;
5) successively all second treatment zones 26 of blisk 2 are carried out laser-impact and handle, its treatment process is as described in the step 3;
6) by above step, can finish the laser-impact of all blade 21 convex surfaces of blisk 2 and handle.
Claims (4)
1. a laser-impact is handled the method that obtains to stablize moisture film in the blisk, it is characterized in that: blisk (2) clamping is on six degree of freedom mechanical manipulator (3), in the laser-impact treating processes, the position of nozzle (8) remains unchanged, and the position that guarantees laser facula (5) by six degree of freedom mechanical manipulator (3) remains unchanged, and guarantee current (7) by nozzle (9) ejection on blade (21) (6) position, contact and the angle (8) in current (7) and section, contact (6) remain unchanged, guarantee at the stable moisture film (4) of the position of laser facula (5) acquisition with this.
2. a kind of laser-impact according to claim 1 is handled the method that obtains to stablize moisture film in the blisk, it is characterized in that: pending leaf area is divided into first treatment zone (24) and second treatment zone (26) two portions are handled respectively, first treatment zone (24) partially disposed with all blades finishes earlier, blisk (2) then overturns, continue to handle second treatment zone (26) part of all blades, guarantee the stable of in entire treatment process moisture film.
3. a kind of laser-impact according to claim 1 is handled the method that obtains to stablize moisture film in the blisk, it is characterized in that: laser facula (5) is 15 ~ 20mm with the distance of contact (6), the angle (8) in current (7) and section, contact (6) is 10 ~ 20 degree, the medullary ray (91) of nozzle (9) is vertical guide (10) with the plane that current (7) medullary rays (71) constitute, laser facula (5) medullary ray (51) is positioned at this vertical guide, and laser facula (5) is positioned at below, contact (6).
4. a kind of laser-impact according to claim 1 is handled the method that obtains to stablize moisture film in the blisk, it is characterized in that: the section (11) of laser facula (5) position is 70 ~ 80 degree with the angle (13) of horizontal plane (12);
A kind of laser-impact according to claim 1 is handled the method that obtains to stablize moisture film in the blisk, it is characterized in that comprising the steps:
1) blisk is installed on the six degree of freedom mechanical manipulator, the upper surface of blisk up;
2) regulate the six degree of freedom mechanical manipulator, open nozzle, make current spray to the surface of blade; Regulate nozzle location, the angle that makes the section of current and contact is 10 ~ 15 degree; Making the distance of the contact of laser facula and current and blade formation is 15 ~ 20mm; Making the medullary ray of nozzle and plane that the middle of the stream line constitutes is vertical guide, and laser facula is positioned at this vertical guide, and laser facula is positioned at the below, contact; Making the section of laser facula position and the angle of horizontal plane is 70 ~ 80 degree; Can obtain a stable moisture film this moment;
3) at first first treatment zone of blade being carried out laser-impact handles; Remain as the described parameter of step 2 by the six degree of freedom manipulator control system, finish the laser-impact of first treatment zone and handle; Successively all the other all blades are all finished the processing of first treatment zone according to preceding method;
4) then second treatment zone of blade being carried out laser-impact handles; Again install after blisk disassembled, install the upper surface of blisk down this moment, and this moment, upper limb was positioned at the below, and as shown in the figure, its installation parameter is as described in the step;
5) successively all second treatment zones of blisk are carried out laser-impact and handle, its treatment process is as described in the step 3;
6) by above step, can finish the laser-impact of all blades of blisk and handle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310040852.9A CN103205546B (en) | 2013-02-04 | 2013-02-04 | The method stablizing moisture film is obtained in a kind of laser-impact process blisk |
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| CN201310040852.9A CN103205546B (en) | 2013-02-04 | 2013-02-04 | The method stablizing moisture film is obtained in a kind of laser-impact process blisk |
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| CN103205546A true CN103205546A (en) | 2013-07-17 |
| CN103205546B CN103205546B (en) | 2015-09-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226983A (en) * | 2018-10-18 | 2019-01-18 | 扬州镭奔激光科技有限公司 | The laser impact intensified absorption protective layer coating unit of blade of aviation engine and method |
| CN112337703A (en) * | 2020-10-16 | 2021-02-09 | 中国航发北京航空材料研究院 | Laser shock strengthening restraining water device and implementation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996028574A1 (en) * | 1995-03-13 | 1996-09-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process and device for increasing the degree of absorption during superficial solid phase hardening of workpieces by laser radiation |
| US5911890A (en) * | 1997-02-25 | 1999-06-15 | Lsp Technologies, Inc. | Oblique angle laser shock processing |
| CN102409141A (en) * | 2011-11-22 | 2012-04-11 | 中国航空工业集团公司北京航空制造工程研究所 | Transition processing method for edge of laser shock enhanced region |
| CN102732695A (en) * | 2012-06-23 | 2012-10-17 | 吉林大学 | Metal surface laser processing method in liquid medium |
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2013
- 2013-02-04 CN CN201310040852.9A patent/CN103205546B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996028574A1 (en) * | 1995-03-13 | 1996-09-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process and device for increasing the degree of absorption during superficial solid phase hardening of workpieces by laser radiation |
| US5911890A (en) * | 1997-02-25 | 1999-06-15 | Lsp Technologies, Inc. | Oblique angle laser shock processing |
| CN102409141A (en) * | 2011-11-22 | 2012-04-11 | 中国航空工业集团公司北京航空制造工程研究所 | Transition processing method for edge of laser shock enhanced region |
| CN102732695A (en) * | 2012-06-23 | 2012-10-17 | 吉林大学 | Metal surface laser processing method in liquid medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226983A (en) * | 2018-10-18 | 2019-01-18 | 扬州镭奔激光科技有限公司 | The laser impact intensified absorption protective layer coating unit of blade of aviation engine and method |
| CN112337703A (en) * | 2020-10-16 | 2021-02-09 | 中国航发北京航空材料研究院 | Laser shock strengthening restraining water device and implementation method thereof |
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| CN103205546B (en) | 2015-09-09 |
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Granted publication date: 20150909 Termination date: 20190204 |