Autoclave of advanced composite material in all the low cost project of solidify technology

Shape with autoclave the technology gives priority to production aviation structural member of advanced composite material is made in of all kinds plane on different level entered batch stage of production, some model already produced structural member of hundreds advanced composite material of the portion, passed use assessment of more than 10 years, provided practical engineering experience to enlarge the application of aboard of advanced composite material further. But we must regain consciousness see, the production cost house of advanced composite material does not fall high, the understanding with the abhorrent sex that approves the quality in producing, characteristic to advanced composite material enough lack remain obstacle the main factor that aboard of advanced composite material enlarges application, this also is our country aviation the problem place with advanced composite material and huge gap of application of composite material of advanced country aviation. Accordingly, base oneself upon shows some autoclave ways, how to reduce its to make a task of top priority that is us originally, if choose craft character of homebred and good colophony system, auxiliary material use, shape the structure of the mould is optimized and the strict control of process detail, can reducing production cost while, rise apparently make percent of pass. This task is aimed at advanced composite material in all the product that solidify technology shapes, from material development, craft is optimized, function detects the link such as after service, give priority to lead with low cost, described an autoclave in detail in all the model that solidify technology project turns, achieved shape in autoclave the goal that the respect reduces production cost apparently. Technical difficulty composite material in all solidify technology should enter a project to change, must from material, craft, detect and link proceed with waits after carry out, high yield character measures as collateral as low production cost research, high production efficiency and small ratio of defects are collateral consideration, build low cost, high quality, efficient change production system with the composite material project of low blemish, the low cost that achieves whole project is changed, the technology is complete change. Advanced composite material in all solidify technology project changes the technical difficult point that should achieve low production cost to must capture to basically have: (1) the raw material supply of goods of low cost and much breed beforehand the development that dip expects and reserve; (2) in all what solidify technology place needs to assist material is homebred change research; (3) in all solidify shapes of craft optimize; (4) product function detects of the rationality of the project and product quality assure; (5) the function token after method of rehabilitate of blemish of goods of advanced composite material and rehabilitate. Technical program 　 1 much breed beforehand the development that dip expects uses raw material function to be not stabilized as a result of the matrix of composite material, add data system to suffer easily carry, the influence that waits for an element surely, make beforehand the technical properties that dip expects appears bigger difference, affect the in-house quality of advanced composite material thereby. In addition, advanced composite material the certain local defect that appears in solidify process, because find a kind very hard to it the colophony system that function comparatives has repair to its, because component part cannot satisfy a product to the technology asks and cannot be used, raised the production cost of component part. Shape with what stabilize advanced composite material to rise quality, reduce the production cost of advanced composite material, we develop the system of high temperature solidify, tenacity is different NY9200 epoxy resin in was being developed according to different composite material structural member, raw material all is homebred, valence cheap is bought easily; Its make up craft simple, quality is stable, can use at wet or dry method beforehand dip, free from contamination, easy project is changed; Its beforehand dip makings has period of keep in storage to grow, solidify temperature bandwidth, solidify time is short wait for an advantage; Its are advanced the character that composite material has tenacity and mechanical function to hold actor concurrently, the domestic advanced composite material that can satisfy use temperature completely to be 130 ℃ of 80 ～ is right the requirement of colophony matrix. Its are advanced if the basic function of pressing plate of composite material layer expresses 1 to show. Composite material of this colophony system already batch is used at product of of all kinds aviation, the composite material that produces 1kg via calculating every is made but managing production cost makes an appointment with 120 yuan, its make those who make cost reduce contribution to lead for 8.

6% . Nextpage 　 　 of 2 auxiliary material homebred change research in all what solidify technology uses is vacuum - the autoclave that baric photograph combines shapes law, to assure the production quality of advanced composite material, the auxiliary material that chooses normally on craft has segregation film of film, bag of cloth of drawing of patterns, vacuum and breathe freely the material such as felt. As a result of home development of technology of advanced composite material starts later, accordingly, the auxiliary data that a lot of domestic manufacturer use all relies on an entrance, such not only the price is high, need to spend much foreign currency (assist cost of material to take total cost of material about 80% ) , and the plan need that often still is hard to assure production because of the problem such as channel of replenish onr's stock, especially advanced composite material creates cost field, severely block up the application of this one advanced composite material and development. Through old survey and experiment, our aborning already replaced an entrance to assist material with a variety of homebred and auxiliary material certainly. Homebred the application that turns auxiliary material, broke the passive situation that counts an import completely, promoted home to assist the research process of material, make production cost drops greatly. Application is turned in the project in practice, assisting the example of material to turn next material also is the important segment that reduces those who produce cost. Expect below the use that passes pair of homebred and auxiliary data and the standard in producing link course, the composite material of every production 1kg is made but managing production cost makes an appointment with 470 yuan, production cost reduces contributive rate to be as high as 33.

6% . 3 in all solidify shapes of craft optimize to enclosed part of construction of box form type, it is to use external forms of pair of control combining a model normally, lumen balata soft model is applied press in all solidify engineering technology, be opposite namely in adding up to a mould, in soft model of special type balata and vacuum system are used between body of dip makings envelope, wall beforehand wall body and envelope one-time shape come out, if pursue,1(a) place is shown. In adding lukewarm solidify process, the hot expansibility that relies on balata soft model will finish use force to prefabrication. This kind shapes the cost of balata soft model that craft uses is extremely high, and the problem under existence: (1) to beforehand dip makings envelope or number of plies of wall style design relatively a long time, the young member content in material is discharged harder, the product produces not close pine and hole rate limitation easily. (2) balata soft model is used as pressure source, because balata is soft film is deeper, be in especially horny area, its expand ability and difference of other position existence, cannot make the transition of wall and envelope horny area is complete joint, bring about envelope and wall body to take off stick, loose. (3) soft model the calculation of the hot expansibility of each place is complex, use number is limited, shape modular design demand is high. (4) soft model is heating the problem is conducted because of heat in the process, bring about make heat increase of solidify adventitious factor, the quality after causing solidify is not stable. Be aimed at afore-mentioned problems, we experiment through relapsing, change in the project improve ceaselessly in production, will soft model originallies in all melt into of chemical art actor pursues 1 (B) what show a form, use serial production of program of this kind of technology many 300 composite material product of the portion, quality is stable all the time. Change manufacturing quality to raise a project, be in in all on solidify technology besides adopting afore-mentioned craft plan, still be in beforehand solidify parameter, control contained the respect such as diversion of glue quantity, gas and size control to adopt optimize a technology, make autoclave in all solidify technology achieves optimization, product percent of pass achieves 99% above. Through changing the many sided of craft to optimize to originallying in all, the composite material of every production 1kg is made but managing production cost makes an appointment with 600 yuan, the contributive rate that lowers to making cost is 42.

8% . Project of 4 function test optimizes plan component of advanced composite material must undertake after solidify shapes over all dimension examines, in-house quality nondestructive detects and check along with the intensity of furnace sample. Examination time and whole make shape time comparatives. Because the product enters batch production, the sample that let oven should expend the company's many manpower material resources, because how this optimizes the test along with furnace sample,the project also is to increase a manufacturing efficiency, respect that reduces production cost. The property of the sample that let oven does not use an evaluation to design intensity to be worth, use the stability that assesses technology however, according to the consistent course of action that subcontract of international aviation composite material produces and me the company is in pair of 60 canister second the result that the function of the sample that let oven checks a value to undertake statistic is analysed, reduce 4 quota it is 2, stay to be cut between the layer and contain glue to measure namely. Optimize through testing an item to function, the composite material of every production 1kg is made but managing production cost makes an appointment with 120 yuan, the contributive rate that lowers to making cost is 8.

6% . 5 after repairing a technology to consider to enter a project to turn production, because produce and be used of big batch product, in this process hard to avoid is put in blemish / injury, advanced composite material is made production and after service are become treat settlement problem urgently. Through many craft experiment and intensity function check, we are right all sorts of blemish / scathing type gave out to revamp plan specificly, formed repair a file. Repair except commonly used inject colophony, fill and perfusion are repaired, snail is received outside fill strong board repair and fill outside adhesive bonding strong board outside repairing a method, still make according to our company composite material the characteristic was developed apply to bump reach the advanced composite material that touchs an injury to bring about to make the defect such as a damage of in-house and loose, statified, beehive / long treatment involving the use of tonics to restore the patient's health of injury, be like beforehand dip makings fills a law, solidify fills a law. The technical difficulty of these methods depends on filling piece homocentric control and degree of breach are inclined rank control. In homocentric spent a respect to develop a fixed position board technically to be used at sampling and fixed position, in inclined rank the respect is obtained through tailor-made tool and experiment inclined rank long thick than. Be in in all the earlier stage that solidify technology project turns application, we ever had appeared to make quality do not satisfy the appearance that designs a requirement, repair a technology through ours, structural member of this composite material already was used old, and quality is good all the time. In this respect, reduce contributive rate on average to achieve to making cost 6.

4% . Conclusion is advanced composite material in all solidify technology is in some model on machine since getting applied at the beginning of 90 time oneself, already produced 350 more than sortie, achieved the goal that the project changes. Those who pass the development of raw material, auxiliary data is homebred change research, in all of solidify craft optimize, the optimize and repairs a technology research of function test project, complete in all while solidify technology applies at approving production, obtained huge economic benefits again, realized low cost in all the project of solidify technology turns application. The project that passes this data turns application, we can reach the following conclusion: (1) metal - core model uses balata combined-type at box shape structure to get force part in all solidify shapes, can come true to all press the effect, can reduce production cost effectively; (2) homebred the application that turns auxiliary material, can satisfy composite material to create use craft demand, reduce a project to influence production cost; (3) the sample letting oven that the project turns production (piece) function dogs test project, can undertake optimizing choosing, in order to reduce manufacturing cost; (4) while the project turns production, begin those who have specific aim to repair technical research, can solve what the out of tolerance in producing a course tastes to repair a problem already, also be the effective safeguard of product use process, technical economy and social effect hold concurrently; (5) reduce autoclave to shape the other and beneficial research of law production cost still remains to be developed ceaselessly. CNC Milling