Sintering ea mesebetsi ea feme ea metallurgy ha se mohato oa ho qetela-ke nako ea ho etsa kapa ea khefu bakeng sa botšepehi ba karolo, botsitso ba sebopeho, le ts'ebetso ea nako e telele lits'ebetsong tse phahameng haholo. Ho QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., re se re kentse lihlopha tse fetang 12,000 tsa cobalt-nickel alloy compacts ho tloha ka 2018-haholo-holo lisebelisoa tsa AMS 5387 le T800-grade tse reretsoeng ho haha ntlo ea hydraulic pump, litulo tsa setsi sa khatello ea li-valve le li-winner. Seo re ithutileng sona se ne se le sieo libukeng tsa thuto. E hlahile ho tloha ho likutu tsa sebōpi, lisebelisoa tsa microstructure, le tlhahlobo e pheta-phetoang ea sesosa ha boima bo theohile ka 0.3% ho 1,185 ° C kapa kholo ea lijo-thollo e ile ea phahama nakong ea ho pholisoa ka naetrojene.
Taolo ea Boemo ba Mocheso ha e Buisanoe—Haholo-holo bakeng sa Li-Superalloys
Mefokolo e mengata ea ho cheka mehala ea feme ea metallurgy e khutlela morao ho thermal lag — eseng meeli ea lisebelisoa. Phapang ea 15 ° C nakong ea ho ts'oaroa ha nako e telele e fetola phetisetso ea karolo ea AMS 5387 e lekaneng ho fokotsa bophelo ba mokhathala ka 37% matlong a lisilindara tsa pompo ea piston. Re sebelisa libopi tse futhumetseng tsa molybdenum tse peli tse nang le maikutlo a nako ea nnete ea thermocouple libakeng tse tharo tsa radial mojaro ka mong. Kutloisiso e bohlokoa: litefiso tsa ramp ka tlase ho 3 ° C / min ka tlase ho 600 ° C li thibela ho phatloha ha li-binder; ka holimo ho 900 ° C, re tšoara metsotso ea 45-eseng 60-ho qoba ho ata ho feteletseng ha cobalt ha re ntse re boloka ≥98.2% tekano ea theory. Sena ha se khopolo-taba. Ke profil e fetisitseng netefatso ea ASTM B243 ka lotho tse 92 tse latellanang.
Bohloeki ba Sepakapaka bo Laola Botšepehi ba Bokahohle-le Boiketlo
Likahare tsa hydrogen li bohlokoa ho feta phallo ea khase kaofela. Re lula re lekola phoka ea H₂ re sa khaotse - eseng feela ho tsepamisa mohopolo oa ka hare. Li-nozzle tsa moreki oa cobalt alloy li bonts'itse li-micro-pitting kamora kalafo ea mocheso. Patlisiso e ile ea senola hydrogen e kenang ka 99.99% e hloekileng - empa phoka e fihla ho -42 ° C e hlahisitse mouoane oa metsi o nang le oxidized mellwane ea lijo-thollo tse nang le nickel nakong ea sintering. Tharollo: e ekelitse ho ts'oara le ho tiisa phoka ho -65°C. Sephetho: bokaholimo ba metsi (Ra) bo theohile ho tloha ho 1.8 µm ho ea ho 0.6 µm pre-machining, ho fokotsa nako ea potoloho ea CNC ka 22%. Bakeng sa lisebelisoa tsa tšepe le lisebelisoa tsa tšepe tse sa hloekang, re fetohela ho ammonia e arohaneng <5 ppm O₂—e netefalitsoe ka hora ka sensara ea zirconia. Ha ho mekhelo.
Meroalo ea Geometry le Boima ba Botala bo Lokela ho Bapisoa—E se ke ea Eketsoa
Botala bo phahameng bo utloahala bo le betere—ho fihlela khothatso e fihla. Re koahela botala bo botala ho 62-65% bakeng sa likarolo tse thehiloeng ho T800 tse telele ho feta 120 mm. Hobaneng? Hobane ho honyela ho sa leka-lekaneng ka har'a li-contours tse rarahaneng - joalo ka tsa li-winch shafts tsa koloi ea boenjiniere - ho baka seqha sa 0.18 mm ka bolelele ba limilimithara tse 300 haeba boima bo botala bo feta 66%. Tokiso ea rona: li-trays tsa ho kenya likarolo tse nang le lithapo tsa tšehetso tse hlophisitsoeng. Likarolo tse tšesaane li lutse holim'a litepisi tsa ceramic tse sa hanyetsoeng ka tlase; metheo e teteaneng e lutse holim'a liphahlo tse phahameng tsa conductivity tsa silicon carbide. Phapang ea shrinkage e theohile ho tloha ± 0.32% ho ± 0.07%. Bonase: tlhahiso ea sebōpi e eketsehile ka 18% hobane re felisitse ho otlolla ka mor'a sinter.
Tlhokomelo ea Nako ea 'Nete e Feta Tlhahlobo ea Ka mor'a Ts'ebetso Nako le Nako
Re ile ra khaotsa ho itšetleha ka litlhahlobo tse thehiloeng ho sampuli ka mor'a hore sehlopha sa 'mele oa li-valve tsa khatello e hlōlehe ho etsa tlhahlobo ea hydrostatic ho 410 bar-ho sa tsotellehe ho feta tlhahlobo ea CMM. Motso oa sesosa: porosity ea sebakeng se haufi le radii e ka hare e fetotsoeng ke tekanyo ea ntlha e le 'ngoe ea Archimedes. Hona joale tsamaiso e 'ngoe le e' ngoe ea sintering e fepa data ho tsamaiso ea rona ea SinterTrack ea thepa: thermocouple arrays log lintlha tse 120 ka mojaro; li-sensor tsa tahlehelo ea boima li lemoha ho phethoa ha ho chesoa ha li-binder nakong ea metsotsoana e ± 0.8; Lits'oants'o tsa 'mapa oa likhamera tsa infrared li bonts'a ho kopana ha lijo-thollo tsa pele. Litlhokomeliso li etsa hore motho a tšoarelle le ho hlahloba ka mokhoa o itekanetseng haeba paramethara efe kapa efe e kheloha ho feta meeli ea taolo e netefalitsoeng ka lipalo-e baloang ho latela maemo a thepa, eseng sebōpi se seng le se seng. Sena se fokolitse lotho e sa lumellaneng ho tloha ho 1.4% ho ea ho 0.23% likhoeling tse 18.
Ntlafatso ha e Mabapi le Paramethara e le 'ngoe-Ke Mabapi le Liqeto tse Lokelang
Katleho ea fektheri ea phofo ea metallurgy e itšetlehile ka hore na sepakapaka, mocheso, nako, le karolo ea geometry li sebelisana joang - eseng hore na e 'ngoe le e 'ngoe e sebetsa joang e le mong. Thempereichara e phahameng ea 5°C e ntlafatsa ho teteana empa e mpefatsa oxidation ea bokaholimo ntle le haeba bohloeki ba haedrojene bo tiea ka nako e le 'ngoe. Ho pholisa ka potlako ho ntlafatsa ho thatafala empa ho memela li-microcracks ntle le haeba botala bo botala bo theoha hanyane. Ho QINGDAO QIANGSENYUAN, re tšoara sintering e le mokhoa o koetsoeng o koetsoeng: data e ngata ea phofo e kenang (boholo ba karolo ea D50, dikahare tsa oksijene, tekanyo ea phallo) e fetola ka ho toba li-setpoints tsa sebōpi pele e laela. Re arolelana maikutlo ana - eseng feela liphetho - le bareki nakong ea tlhahlobo ea GD&T. Hobane ha ntlo ea hau ea pompo e tlameha ho phela ka lipotoloho tse 20,000 ho 350 bar, sintering ha e hlahise. Ke phethahatso ea konteraka ea metallurgic.
