Laser technology in aviation engine whole Xie Panjie compose repairs medium application

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Aviation engine fan and compressor whole Xie Panjie compose is the structure that becomes blade and turntable design a whole. Its leave out chamfer of the rabbet that traditional join needs, tenon and locking device, reduced a construction self-prossessed with the weight that prop up, reduced rotor quality greatly; Reduce the wind block loss of sunken place between class, improve performance thereby; Edge of leave out installation and bolt, nut, lock piece wait for join, reduce spare parts amount greatly thereby; Without tenon chamfer leak, make compressor rotor temperature inferior, improve rotor life thereby. Without tenon chamfer, avoid injury of occurrence tenon chamfer to reach rupture wait for potential trouble, raise dependability greatly thereby. According to the report, use whole Xie Panjie compose can make engine weight reduces 20%~30% , efficiency raises 5%~10 % , spare parts amount reduces 50% above. Whole complex, passageway opens Xie Panjie compose demand of precision of open sex difference, treatment is high, blade face is dimensional freedom curved surface, its itself production difficulty is extremely consequently tall, and join with groovy rabbet and tenon chamfer the texture differs, xie Panjie compose is in whole blade cannot change simply alone when occurrence injury, damage because of a lamina likely consequently and discard as useless whole whole rotor of Xie Panjie compose. In integral leaf dish hard to avoid of treatment initial stage can appear a few repair, and the fan on engine of aviation of engine use process / compressor lamina often by batter, be in before in groovy design, when encountering this kind of situation, be to change normally the lamina of damage is OK, but Xie Panjie compose cannot because of a leaf dish on blade is mauled and a few discard as useless a leaf dish, so development whole Xie Panzhong damages individually of blade repair a technology crucial. After GE company was growing to repair a technology specially, just used 5 whole part of a historical period in F414 dish [1] . In IHPTET the plan is carried out in, use laser curve to solder the method goes to integral Xie Panjin repair, the intensity after blade rehabilitate and former lamina are about the same, so far, xie Panjie compose just had whole vitality, because this can be on aviation engine,receive wider application. Integral leaf dish repair include commonly: (1) machine increase odd share; (2) the chemistry before repairing is clean; (3) undertake soldering to blade or deposit; (4) preliminary nondestructive flaw detection (FPI/X ray examines) ; (5) the chemistry before heat treatment is clean; (6) heat treatment; (7) cutting blade profile includes a line, cut final figure; (8) pull batch / burnish blade profile, by shed a road to curve foliaceous root radius; (9) final nondestructive flaw detection (NDF) ; (10) alkaline law is clean, take out is pulled batch / the hangover that burnish; (11) undertake nap to blade profile by need (wide margin, pointed horn) ; (12) La Ke positive pole examines; (13) gush bolus is sclerotic. Be aimed at a few crucial step, business of development of product of engine of world famous aviation and research and development of technology development business low heat of laser metal deposit, laser inputs accurate metal deposit craft of finishing of craft and laser concussion aggrandizement advanced and feasible laser technology, use its integral part of a historical period dish in waiting for advanced product, obtained very good result [2-4] . Consequently, sum up its characteristic, development and application to be able to be fan of engine of aviation of Chinese new generation / the development of Xie Panjie compose offers compressor whole reference and draw lessons from. Laser twist solders repairing craft laser twist to solder is to use stimulate the mutual response between beam of light and stuff stuff, use the figure of content of v of CNC programme controll, get on structural profile v in base. Programmed control solders the process makes a spare parts mobile on the X-Y horizontal below laser nozzle component. Stuff stuff flows into powder to solder by the small-sized heat that stimulates beam of light to generate in bath, solder sedimentary those who use hot frit data is caky and figuration. Multilayer welding path, make proper material body according to every fixed position of need, form the three-dimensional and stereo entity of good appearance finally. Laser twist solders the research of craft only then 1988, studying a result to make clear is to be in no matter titanium radical (Ti6-4) still be nickel radical (IN718) perspective of very good development is had on material, consequently, GE company filed patent to this one craft (5038014) , use this technology GE company to be in technology of engine of integrated high-powered turbine (IHPTET) on compressor of machine of test and verify of research plan XTC46, twist of laser of test and verify solders repair a method. Compressor of machine of XTC46 test and verify is used contain whole the integral leaf of the intermediate band annulus of 360 ° dish. In the experiment, a lamina causes damage by tall loop exhaustion, bring about in order of full page coronal to be damaged, and the blade profile below remain cannot be repaired. Drop original blade profile through going, the outflow way that forms in Xie Guan apparently compose builds brand-new blade profile, the Xie Pande of attaint with new rehabilitate. Xie Panji curves the whole that GE company studied to improve solely solder repair a method, use dissociable lamina and rotor commonly, arrive with falling the element that with attaint Xie Panyou involves in treatment the smallest. This kind of method can be below the circumstance that does not tear open next compressor, through changing blade repairs rotor lamina set quickly. If blade is differred by the need in attaint or experiment,another advantage is blade, can change quickly blade, but it cannot mirror blade and leaf well and truly dish function difference. Laser twist solders it is as dangerous as what treatment loss and blade invalidation concern to can be reduced. But, because repair equipment to lack high power laser at present, law of this one party has not thrown application. Laser twist solders repair craft to suit to use integral part of a historical period very much dish development plan. GE company's global experience is individual lamina and rotor are used during development experiments, the treatment risk that involves in order to make with scathing whole Xie Panyou is the least. It is OK to use method of this one party through changing blade apace replaces injury or new rotor lamina, do not need to tear open next compressor. Laser metal deposit repairs craft of deposit of craft laser metal is to use laser general metal (it is metallic powder more commonly) after fusing again deposit go up to matrix, form on matrix thereby or multilayer deposit, have the objective of repair in order to achieve to matrix blemish. The speed of craft of laser metal deposit and efficiency and the intensity that stimulate beam of light, deposit metal (pulverous) to makings speed, nozzle travel speed of advance is spent, and every deposit mutual between build receive a quantity to concern. Will control the quality of whole deposit and efficiency through controlling afore-mentioned relevant parameter. Craft of laser metal deposit is maintenance whole leaf dish most economy and one of the most effective solutions [5] . The advantage with the biggest technology of laser metal deposit is to use a kind of craft to repair different damage, simplified to repair plan thereby. In integral leaf Pan Weixiu, use craft of metallic laser deposit to replace electron beam solder and v of argon arc solder to wait repair craft, the integral leaf after can making maintain dish have longer service life, can reduce the whole life cost of engine greatly from this. Metallographic analysis makes clear, the deposit that place of craft of laser metal deposit acquires has even and meticulous organization structure, having good frit to receive a gender with matrix organization. The material breed that applies to craft of rehabilitate of laser metal deposit is very much, wait like alloy of stainless steel, titanium, high temperature alloy. And the metal that accumulates with Yu Chen can be wire or filar material, but use more is metallic powder. Compare laser metal deposit to be able to make deposit material and base material complete with drill rod solder, thermal spraying and plasma spray photograph fusion. Craft of laser metal deposit is OK repair whole leaf dish single crystal or blade, directional crystallization lamina and turbine rotor are sealed severe paragraph etc. It not only it is the method of motor component rehabilitate with a kind of effective economy, still can use at undertaking alternative metal add to component, build an elaborate structure thereby, make component reachs the complex structure that designs a requirement and figure. Because laser metal is deposit the temperature when craft application is higher, be achieved commonly or the melting point of metal of prep above deposit, easy to soldering the structure of component or oneself of metallic deposit component and function cause undesirable effect, applying to matrix is by the component that solder or becomes. Use technology of deposit of direct metal laser to whole the common step of rehabilitate of lamina of Xie Panshou caustic is: Above all, use mechanical method to undertake nap to the place is short of caustic of blade; Use deposit of direct metal laser again craft is multilayer to repairing place to undertake metallic deposit; Have precision work to metallic deposit finally, make its accord with the blade profile requirement of blade. Craft of laser metal deposit can repair different damage with a kind of craft, simplified to repair plan. In integral leaf Pan Weixiu, use craft of laser metal deposit to be able to replace electron beam solder and v of argon arc solder to wait repair craft, the integral leaf after making maintain thereby dish have longer service life, reduce the whole life cost of engine greatly from this. In produce a margin, drop piece when waiting for blemish, what organize as a result of single crystal or directional crystallization lamina is especially qualitative, use the craft such as electron beam solder and v of argon arc solder very hard to undertake repairing. And the hot influence that uses craft of laser metal deposit to be organized to matrix is minor, and repair place relatively lesser, the lamina after making repair thereby still can hold its whole property. Technology of laser metal deposit is special the aviation motor component that applies to value of repair high price, especially integral leaf dish. The device of laser metal deposit that at present maintenance of aviation motor component uses all is foreign product. Relevant craft of home and equipment still are in phase of research and development, with abroad photograph comparing has bigger difference. Laser low heat inputs accurate metal deposit to repair craft laser low heat to input the patent craft that craft of accurate metal deposit is H&R technology company and system. Laser low heat inputs craft of accurate metal deposit basically is to use flat steel wire of laser fuse metal and an one layer ground undertakes pile, what differ with other metal deposit is, this kind of technology need not be in before deposit add bath is built on workpiece. What the quantity of heat that every unit deposit needs technology of deposit of metal of nicety of input of laser low heat compares traditional technique is little, and the deposit rate of generation is high, and won't be caused bigger be out of shape, repair charge relatively cheap also. This technology not only can repair damage corrodes a component, and still can fight through what material deposit raises blade profile corrode ability. Express the 1 a few specific characteristics that listed laser low heat inputs accurate metal deposit. The integral leaf that American navy and air force input laser low heat craft of accurate metal deposit to apply successfully at repairing damage dish, omit 3 times to install measure, make repair time to shorten, precision rises, charge decreases, life is lengthened, also can reduce the error of handlers. Use laser to exceed low heat to input craft of accurate metal deposit to repair include commonly the following 4 measure. Nextpage (1) will resemble T700 engine compressor leaf of whole of the 1st class dish such in be about to repair a component to install laser to exceed low heat to input system of accurate metal deposit, the screen of graphical user interface that uses a system (GUI) , push button, with the lamina that scanning injures; The software of this system will store these data, executive maths surface is evaluated, recover from an illness actual part (oppose a project) . (2) the screen of graphical user interface that uses a system (GUI) , undertake to scathing area the machine before deposit is added; The animation of method of the tool that finish, ensure the safety of the operation and high quality. (3) the screen of graphical user interface that uses a system (GUI) , begin to have metallic deposit to scathing area, injure area accumulation metal in order to be in, finish the animation of deposit tool method, ensure the safety of the operation and high quality. (4) the screen of graphical user interface that uses a system (GUI) undertake to the component last chance is added / finishing, in order to make component matrix surface and repair area to make the same score glide to cross. In T700 engine compressor leaf of whole of the 1st class dish go up after getting test and verify, undertake in the light of AM355 and Ti-6242 alloy laser low heat inputs craft of accurate metal deposit to undertake developing, to the metallurgy of these material and tall loop exhaustion sample made experiment and be evaluated relevantly. Additional, be aimed at leaf of F135 engine whole technically still dish, preparation Ti-6242 laser low heat inputs sample of metallurgy of craft of accurate metal deposit, passed a test. On this foundation, h&R company will be farther craft of deposit of metal of nicety of low to laser hot input undertakes the following development and test and verify: (1) to T700 engine by American navy or department of defense lamina of compressor of the 1st class is undertaken tall loop exhaustion experiments, in order to achieve TRL6; (2) the development that completes the PMDTM GUI software that is used at final opportunity to add, ensure final opportunity adds the blade face after repairing modelling of smooth, leading edge is accurate, match with the others blade profile good, achieve TRL7; (3) the laser low heat that in the light of compressor of engine of GE company T700 Xie Pankai of whole of the 1st class delivers the 3rd level inputs craft of accurate metal deposit, achieve TRL8; (4) finish final appraisal, achieve TRL9. Additional, h&R company is aimed at engine of F135 of general benefit firm repair, develop and preparation Ti-6242 HCF sample, undertook relevant tall loop exhaustion experiments and be evaluated, achieve what with whole of T700 engine compressor Xie Panxiang is the same as to repair a level. Watch 2 listed laser low heat inputs craft of accurate metal deposit the working arrangement of the 3rd phase. Finishing of laser concussion aggrandizement repairs craft laser to pound aggrandizement surface (Laser Shock Processing, LSP) craft is the bow wave that uses generation of strong pulse laser, a kind of innovation that introduces remains to press stress from component surface and the most popular exterior aggrandizement technology. Its principle is to use short pulse (second of a few accept) the tie layer of Fu of besmear of surface of component of metal of powerful laser radiate (the water that is like flow) , besmear at metallic surface through restraining an effect the opaque coat of Fu (like adhesive plaster of black Qi Huo) , coat absorbs laser energy to produce volatile vaporization to evaporate, evaporating gas absorbs the rest laser to produce the plasma jet that expands quickly, demarcate generates the high-pressured bow wave that increases at high speed in the plasma jet between component surface and tie layer, bow wave arises " cold action " action travels upcountry at metallic surface, form be out of shape by plasticity caused remains presses stress [6-11] . Be handled more than when the peak value pressure of bow wave material trends succumbs when intensity, material surface layer does not produce sclerosis of meet an emergency, remain is very big stress, at the same time microcosmic organization produces very big change, improve data significantly fight fatigue, wear-resisting caustic and prevent stress to corrode character. Research and development of LSPT company successful land durable beforehand the system of RapidCoaterTM of laser concussion system of type of production, popularize its application to arrive the fan of the F110-GE-100 engine that deserves to install F-16A/B battleplan, F110-GE-129 engine that deserves to install F-16C/D, F100-PW-220 engine that deserves to install F-15 battleplan, Trent800 engine that deserves to assemble B777 plane, TRENT1000 engine that deserves to install B787 / on compressor lamina. This one technology makes FOD tolerance raises 15 times, examining man-hour and charge decrease greatly, flight safety is improved apparently. According to the report, apply at F110-GE-100 and F110-GE-129 engine, uphold charge for what air force saved about a hundred 10 thousand dollars every year, and estimation prevented the engine breakdown of more mortality. To 2002, had saved 59 million dollar. Predict, to group of air force aircraft 1 billion dollar can be saved inside life period. Company of engineering of American metal surface (MIC) the company uses technology of finishing of laser concussion aggrandizement at the army and the people to use reaction engine blade in order to prolong its exhaustion life, not only the sex of on the safe side that raised aircraft engine, and every months but managing the spare parts of millions of the aircraft upkeep cost of millions of dollars, dollars changes charge. Later, popularize application to arrive again fan / compressor whole in Xie Panjie compose. In the project management development that distributing the F119 engine that installs F-22 battleplan, PW company discovers part of a historical period of whole of compressor of high pressure of the 4th class dish the problem that rotor existence combats exotic to injure tolerance abundant to spend apparent inadequacy. Want to satisfy the function requirement of F-22 battleplan, f119 engine leaf of whole of compressor of high pressure of the 4th class dish the door of rotor is restricted to be worth stress intensity factor to need to raise 3 times. If undertake redesigning, estimation needs fee of above of 10 million dollar, and need longer. This not only the development cost that raises F119 engine, more serious is to affect F-22 battleplan to develop plan. For this, PW company tries to use laser to pound aggrandizement finishing craft to process this one charge costly and the integral leaf with complex structure dish rotor, spend in order to raise the abundant that its fight exotic to injure tolerance. Because laser pounds aggrandizement finishing craft,in the light of processing at first individual lamina is developed, this comes true with respect to need by processing individual lamina is expanded the integral leaf that handles complex structure dish the change of rotor. Above all, LSPT company and PW company decide new craft parameter together, fatigue experiment and manufacturing quality assure a program; Development applies to integral Xie Panchu to manage transparent with opaque coat. March 2003, LSPT company uses artificial besmear Fu the method of opaque coat, aggrandizement of travel laser concussion handles the Xie Panjin of whole of compressor of high pressure of the 4th class that begins pair of F119 engine. Of the same age, air force and PW company established value for F-22 battleplan the product line of laser concussion aggrandizement of 200 million dollar. Because be in,the automatic RapidCoaterTM coating of LSPT company should use adhesive plaster law to complete type test, produce or use method of Fu of adhesive plaster besmear at first. To the end of Feburary 2005, LSPT company already to PW company delivery the whole of compressor of high pressure of the 4th class of the 96 F119 engine that pounds aggrandizement finishing through laser leaf dish. After pounding aggrandizement finishing through laser, the fatigue strength that the damage with micro-crack and fatigue insufficient intensity hurts blade is 413.

7MPa, satisfy the design requirement of 379MPa completely. The jiggle exhaustion life of the ministry of blade wedge root that pounds processing through laser lengthens 25 times above at least. As a result of integral leaf dish geometrical form is complex, use adhesive plaster to besmear Fu law undertakes laser pounds aggrandizement, not only time-consuming long, and labor strength is great. For this, need undertook a few more the following improve the work: (1) improve existing RapidCoaterTM system, use prolate spray head, enter integral part of a historical period in order to suit dish between the lamina that arranges cheek by jowl, processing resembles integral part of a historical period dish the part with such complex structures. (2) in whole Xie Panji is pounded solely quality increases to control monitor between aggrandizement, compositive to whole Xie Panchong attacks aggrandizement inside; Find a place for stimulate system of calibration of energy of beam of light automatically. (3) for whole Xie Pangai takes the coat that applies at RapidCoaterTM system. (4) the plant that builds demand of system of quality of contented PW company and processing program. Use RapidCoaterTM system, in current laser repetition rate (0.

25Hz) next making that produce efficiency to raise 2~3 times; Use what study the development below the plan in ManTech to raise 1~2 of laser repetition rate the technology of times, make produce efficiency to rise further 3 times the left and right sides; Uphold charge through reducing, shorten shutdown time and improve craft efficiency, reduced laser to pound the charge of aggrandizement. Such, came true basically to make light intensity of Xie Panji of whole of compressor of high pressure of the 4th class turns F119 engine time is shortened by original 40h above the goal that reduces 50%~70% at least to original 1/9~1/6 and charge. 2004, craft of finishing of laser concussion aggrandizement is used at F119-PW-100 engine in great quantities leaf of whole of compressor of high pressure of the 4th class dish the production that waits for a component, what patulous still to F119 engine applying is other on rotor of compressor of high pressure of a few class, also apply on the JSF119 engine that atttacks battleplan jointly. To 2009, the Xie Pandou of whole of compressor of F119 engine high pressure of 75% passed laser to pound processing. The application of this one technology makes the maintenance of F-22 battleplan and F119 engine checks frequency to reduce 30%~50% , unit flight charge is reduced, the task prepares grade to rise apparently. CNC Milling