CN103205546B - The method stablizing moisture film is obtained in a kind of laser-impact process blisk - Google Patents
The method stablizing moisture film is obtained in a kind of laser-impact process blisk Download PDFInfo
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- CN103205546B CN103205546B CN201310040852.9A CN201310040852A CN103205546B CN 103205546 B CN103205546 B CN 103205546B CN 201310040852 A CN201310040852 A CN 201310040852A CN 103205546 B CN103205546 B CN 103205546B
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Abstract
The invention provides a kind of method obtaining in laser-impact process blisk and stablize moisture film; In laser-impact treating processes, the position of nozzle remains unchanged, and ensure that the position of laser facula remains unchanged by six degree of freedom mechanical manipulator, and ensure that the current sprayed by nozzle remain unchanged at the contact position of blade and the angle in current and section, contact, ensure to obtain stable moisture film in the position of laser facula with this; For ensureing that whole process all obtains stable moisture film, pending leaf area is divided into two portions and processes respectively by the present invention.
Description
Technical field
The present invention relates to reiforcing laser impact technology field, refer to a kind of method obtaining in laser-impact process blisk and stablize moisture film particularly.
Background technology
Laser impact intensified is a kind of novel material surface strengthening technology, and can obtain high-amplitude residual compressive stress layer on metallic article surface, greatly improve the fatigue lifetime of product, compared with conventional blasting technology, its residual compressive stress layer is darker; At the beginning of 21 century, laser impact technology is applied to the strengthening of F101, F119 and F414 engine blade and manufactures by the U.S..
Blisk can simplify 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, the good rigidly of blisk, balance quality is high, improves the work-ing life of pneumatic plant; But, the FATIGUE FRACTURE PROBLEMS of the blade edge of blisk constrains its work-ing life, laser-impact process blisk edge section, greatly can improve the fatigue lifetime of blade, thus improve the work-ing life of blisk, because blade edge is very thin, be easily out of shape, in laser-impact process blade process, the stability of stable moisture film to laser-impact effect is extremely important.
The density of the blade of blisk is large, torsional angle is large, individual curing cannot be disassembled, in laser-impact treating processes, often need the position of manual regulation nozzle, like this, the form of moisture film just has very large randomness in adjustment each time, have impact on the consistence for the treatment of process, and greatly reduce processing efficiency; Propose in domestic patent of invention ZL200510094810.9 " method and apparatus based on the novel supercharging water constraint layer of laser impact technology " to utilize the interlock controlling water spouting nozzle and laser facula with line control unit, realize the real-time control to water constraint layer, and be applied to the process of engine blade laser-impact; In practical laser shock treatment, need to adopt focal length lens, its focal length, generally all more than 1 meter, if adopt the mode of laser movement to process blisk, will cause Controlling System and light path system complex; Therefore, in laser-impact process blisk, 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, thus completing laser-impact process, this adopts suitable technique to obtain stable moisture film with regard to needing.
Summary of the invention
The present invention is directed to the deficiency of above technology, provide a kind of method obtaining in laser-impact process blisk and stablize moisture film, in the laser-impact process whole process of blisk, obtain stable moisture film all the time, ensure that the consistence of laser-impact treatment effect.
The method stablizing moisture film is obtained in a kind of laser-impact process blisk of the present invention, blisk clamping is on six degree of freedom mechanical manipulator, in laser-impact treating processes, the position of nozzle remains unchanged, and ensure that the position of laser facula remains unchanged by six degree of freedom mechanical manipulator, and ensure that the current sprayed by nozzle remain unchanged at the contact position of blade and the angle in current and section, contact, ensure to obtain stable moisture film in the position of laser facula with this; For ensureing that whole process all obtains stable moisture film, pending leaf area is divided into two portions and processes respectively by the present invention.
Described contact is the position that current contact with blade surface, 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 are formed is vertical guide, and laser facula is positioned at this vertical guide, and laser facula is positioned at below contact; The section of laser facula position becomes 70 ~ 80 degree of angles with horizontal plane; First by complete for vaned for institute a part of regional processing, then overturn blisk, continue the vaned other part of process, and the junction section in this two portions region is overlapping.
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 the turbulent region of current near contacts; Pending leaf area is divided into two portions process respectively, can ensures that the distance of laser facula and current contact in whole laser-impact treating processes is fixed; The plane that the medullary ray of nozzle and middle of the stream line are formed is vertical guide, and laser facula is positioned at this vertical guide (as shown in Figure 3), and laser facula is positioned at below contact, ensure that moisture film centre portions is positioned at laser spot position all the time; The section of laser facula position becomes 70 ~ 80 degree of angles (as shown in Figure 5) with horizontal plane, ensure that under certain flow condition, cover the moisture film flow velocity of blade surface and flow to also certain, thus moisture film is stablized in acquisition.
Accompanying drawing explanation
Fig. 1: obtain the method schematic diagram stablizing moisture film in laser-impact process blisk;
Figure comprises, the laser beam after 1 focusing, 2 blisks, 3 six degree of freedom mechanical manipulators, 4 moisture films, 5 laser faculas, 6 contacts, 7 current, 8 angles, 9 nozzles;
Fig. 2: in laser-impact process blisk, engine blade needs region to be processed;
Figure comprises, 21 untreated areas, 22 laser-impact process fringe regions;
Fig. 3: the first treatment zone schematic diagram;
Figure comprises, 23 blisk upper surfaces, 24 first treatment zones, 25 blade upper limbs, 51 laser spot center lines, 71 middle of the stream lines, 91 nozzle centerlines, 10 vertical guides;
Fig. 4: the second treatment zone schematic diagram;
Figure comprises, 23 blisk upper surfaces, 25 blade upper limbs, 26 second treatment zones;
Fig. 5: the section of laser facula position and horizontal plane angle schematic diagram;
Figure comprises, the section of 11 laser facula positions, 12 horizontal planes, 13 angles, 27 blade sections.
Embodiment
For better setting forth implementation detail of the present invention, be described in detail to obtaining the method stablizing moisture film in a kind of laser-impact process blisk of the present invention below in conjunction with accompanying drawing.
Obtain the method stablizing moisture film in a kind of laser-impact process blisk of the present invention, comprise the laser beam after focusing 1, blisk 2, six degree of freedom mechanical manipulator 3, moisture film 4, laser facula 5, contact 6, current 7, angle 8, nozzle 9.
Be treated to example with the laser-impact of the convex surface of the blade 21 of blisk 2, implementing the present invention needs to carry out laser impact intensified process, as Fig. 1 and Fig. 3 and Fig. 4 to the fringe region 22 of all blades 21 of blisk 2 convex surface.
Implement in a kind of laser-impact process blisk of the present invention, to obtain the method stablizing moisture film and perform following steps:
1) be arranged on six degree of freedom mechanical manipulator 3 by blisk 2, the upper surface 23 of blisk upward;
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 position, the angle 8 making the section of current 7 and contact 6 is 10 ~ 15 degree; The distance of the contact 5 that laser facula 5 is formed with current 7 and blade 21 is 15 ~ 20mm; The plane that the medullary ray of nozzle 9 and current 7 medullary ray are formed is vertical guide 10, and laser facula 5 is positioned at this vertical guide, and laser facula 5 is positioned at below contact 6; The section 11 of laser facula 5 position is made to be 70 ~ 80 degree with the angle 13 of horizontal plane 12; Now can obtain a stable moisture film 4;
3) first laser-impact process is carried out to the first treatment zone 24 of blade 21; Remain the parameter as described in step 2 by six degree of freedom mechanical manipulator 3 Controlling System, complete the laser-impact process of the first treatment zone 24; Successively all the other all blades are all completed to the process of the first treatment zone 24 according to preceding method;
4) then laser-impact process is carried out to the second treatment zone 26 of blade 21; Re-start installation after being disassembled by blisk 2, now installed down the upper surface 23 of blisk, now upper limb 25 is positioned at below, and as shown in Figure 4, its installation parameter is as described in step 2;
5) carry out laser-impact process to all second treatment zones 26 of blisk 2 successively, its treatment process is as described in step 3;
6) by above step, the laser-impact process of all blades 21 convex surface of blisk 2 can be completed.
Claims (1)
1. in a laser-impact process blisk, obtain the method stablizing moisture film, it is characterized in that: pending leaf area is divided into the first treatment zone and second treatment zone two portions process respectively, pending leaf area is blade edge region, first treatment zone is the region comprising blade lower rim, second treatment zone is the region comprising blade upper limb, first by complete for vaned for institute the first treatment zone partially disposed, then blisk is overturn, continue the vaned second treatment zone part of process, specifically comprise the steps:
1) be arranged on by blisk on six degree of freedom mechanical manipulator, the upper surface of blisk upward;
2) regulate six degree of freedom mechanical manipulator, open nozzle, make current spray to the surface of blade; Regulate nozzle location, make the angle in the section of current and contact be 10 ~ 15 degree; The distance of the contact that laser facula and current and blade are formed is 15 ~ 20mm; The plane that the medullary ray of nozzle and middle of the stream line are formed is vertical guide, and laser facula is positioned at this vertical guide, and laser facula is positioned at below contact; The section of laser facula position and the angle of horizontal plane is made to be 70 ~ 80 degree; Now can obtain a stable moisture film;
3) first laser-impact process is carried out to the first treatment zone of blade; Remain the parameter as described in step 2 by six degree of freedom manipulator control system, complete the laser-impact process of the first treatment zone; Successively all the other all blades are all completed to the process of the first treatment zone according to preceding method;
4) then laser-impact process is carried out to the second treatment zone of blade; Re-start installation after being disassembled by blisk, now installed down the upper surface of blisk, now upper limb is positioned at below, and its installation parameter is as described in step 2;
5) carry out laser-impact process to all second treatment zones of blisk successively, its treatment process is as described in step 3;
6) by above step, the vaned laser-impact process of blisk can be completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| Publication Number | Publication Date |
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| CN103205546A CN103205546A (en) | 2013-07-17 |
| CN103205546B true CN103205546B (en) | 2015-09-09 |
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| 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 |
| CN112337703B (en) * | 2020-10-16 | 2022-08-05 | 中国航发北京航空材料研究院 | Laser shock strengthening restraining water device and implementation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19508584C1 (en) * | 1995-03-13 | 1996-02-08 | Fraunhofer Ges Forschung | Method and appts. for increasing the degree of absorption during solid-phase surface hardening of workpieces |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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