Lapho abantu abaningi bezwa intuthuko ye-powder metallurgy, bathwebula amajazi aselebhu kanye nomshini wokunyathelisa ocwebezelayo, ozishintshayo ngokugcwele. Ukulandisa kwemboni konke kumayelana nobunkimbinkimbi bomumo wenetha kanye nama-alloys amasha, okuyiqiniso, kodwa kucwebezela phezu kweqiniso elibi, eliphindaphindayo lokwenza lezi zingxenye zisebenze ngokuhlangana kwangempela. Intuthuko yangempela ayiyona nje impushana noma umshini wokunyathelisa; ukuhlanganiswa kwalo lonke uchungechunge—kusuka ku-feedstock kuye ku-sintering kuya ekusebenzeni kwesibili—nokuthi lokho kushintsha kanjani ukucabanga kwedizayini. Ngibone amadizayini amaningi ehluleka ngoba onjiniyela bacacise ingxenye ye-P/M njengokungathi i-billet eyenziwe ngomshini, indiva izici ze-anisotropic kanye nendima ebalulekile ye-sintering atmospheres. Yilapho inqubekelaphambili yangempela eyenzekayo, ekuvaleni lelo gebe.
I-Material Leap Akuhlali Lapho Ucabanga Ngayo
Yebo, ukuthuthukiswa kwezimpushana ezintsha ezifakwe ngaphambili, njengalezo ezisebenza kakhulu ezihlukene ezihlanganiswe nokusabalalisa, kubalulekile. Banikeza ama-microstructures afanayo kakhulu. Kodwa ukuthuthuka okusebenzayo kithi ngasohlangothini lokukhiqiza kube kuma-binder systems kanye nezinto zokuthambisa. Ekuqaleni kwesikhathi sami ngisebenza nozakwethu ekufakweni kwezihlalo zamavalvu, sashayisa udonga ngamandla aluhlaza. Ingxenye yayizoqhekeka ngesikhathi sokukhishwa, hhayi ngesikhathi sokucwiliswa. Impushana yayithuthukisiwe, kodwa inqubo yayingekho. Sishintshele kunhlanganisela ye-organic binder-lubricant eyinkimbinkimbi, ezwakale njengesinyathelo sokuhlehla ngokuya ngesithombe sobuchwepheshe obuphezulu, kodwa yaxazulula inkinga esheshayo. Kwakuyisikhumbuzo sokuthi isayensi yezinto ezibonakalayo ewubukhazikhazi ngokuvamile incike kulezi zithako ezingezinhle, zamakhemikhali-ezisindayo ukuze zisebenze.
Lokhu kuhlotshaniswa nokusebenza nama-alloys akhethekile. Inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), nomlando wayo ojulile ekutshalweni kwezimali kanye nokwenza imishini ye-cobalt nama-alloys asekelwe ku-nickel, uyakuqonda lokhu ngokunembile. Uma usuka ekusakazeni lawa ma-alloys aqinile uye ekuwenzeni nge-powder metallurgy, izinselele ziyaphindaphindeka. Izici zokugeleza kwempushana zihlukile, amazinga okushisa e-sintering adlulele, futhi ukulawulwa komkhathi (ngokuvamile i-vacuum noma i-high-purity hydrogen) akuxoxiswana. Ukuthuthukiswa lapha kungase kube ukulungiswa kwegraphite okuthembeke kakhulu okunciphisa ukuhlanekezela kwengxenye phakathi nomjikelezo wezinga lokushisa eliphezulu, into oyifunda kuphela ngokuzama nangephutha.
Uma sikhuluma ngokucula, leso yisigaba sangempela sokwenza noma sekhefu. Ungaba nokuhlangana kahle, kodwa uma izinga lokushisa lakho licinywe ngama-degree angu-20 endaweni eshisa kakhulu, noma uma kukhona ukuvuza okuncane esithandweni sakho se-vacuum, ugcina usunezingxenye ezinamandla angaqinile noma ubulukhuni obungashintshi. Sake saba nenqwaba i-powder metallurgy amagiya enjini encane esebenza ngogesi ephase ukuhlolwa kwe-dimensional kodwa yehluleka ekuhloleni ukukhathala. Umlandu? Isimo se-oxidizing kancane ngesikhathi sokupholisa, esidale ungqimba lwe-oxide oluphukayo, oluncane emingceleni yokusanhlamvu. Bekungabonakali ngeso lenyama. Intuthuko yayitshala impahla yokuqapha isimo sesikhathi sangempela, ezwakale njengobukhazikhazi obubizayo yaze yasindisa ukukhiqizwa kokukhiqiza.
I-CNC Machining: Uzakwethu Odingekayo, Hhayi Umuntu Oqhudelana Naye
Kukhona ukuhlukana okungamanga phakathi kwe-Near-net-shape P/M kanye ne-CNC machining. Amandla angempela asebudlelwaneni babo. Ingxenye ingase ibe ngu-95% eyakhiwe umshini wokunyathelisa, kodwa leyo ngxenye yokugcina engu-5%—isimo esibucayi sokubekezela, ikhona elicijile, noma intambo—idinga ukwenziwa. Intuthuko isekuklameni le nqubo ye-hybrid kusukela ekuqaleni. Isibonelo, ukucacisa imbobo engaphansi kancane endaweni ene-sintered, ukwazi ukuthi izoba nesithukuthezi, kuvumela idizayini yamathuluzi eqinile kanye nokugcwaliswa kwempushana okungcono.
Yilapho uzakwethu onemininingwane eqinile yokwenza imishini ebaluleke kakhulu. Ebheka QSYIphrofayili, amashumi amathathu eminyaka abo kumishini ye-CNC akuyona nje isevisi yokwengeza; iwulwazi oluyisisekelo lwemisebenzi yangemva kwe-sintering. Ukukhanda ingxenye yensimbi ene-sintered kuhlukile ekwenzeni ibha esebenzile. I-porosity ingathinta impilo yamathuluzi nokuqedwa kwendawo. Udinga ukulungisa isivinini, okuphakelayo, futhi ngezinye izikhathi usebenzise amajiyometri amathuluzi ahlukene. Ukuqhubekela phambili ku-P/M akunangqondo uma ungakwazi ukukumshini njalo. Ngibambisene kumaphrojekthi lapho sakha khona umthetho olandelwayo wokumba we-P/M flange enezimbotshana, empeleni okwakuyiresiphi yomshini eklanyelwe ukuminyana kwezinto ezibonakalayo. Leyo phrothokholi yayibalulekile njengokucaciswa kwempushana.
Iwebhusayithi tsngtaocnc.com igqamisa umsebenzi wabo nge-shell mold kanye nokufaka utshalomali. Kuyathakazelisa ukucabanga ngokugqagqana. Ukufakwa kwe-investimenti nakho kukhiqiza izimo eziyinkimbinkimbi, eziseduze. Ukukhetha phakathi kwalokhu okubili kuvame ukwehlela kumthamo, impahla, kanye nezidingo zempahla ewumshini. Ngezinye izikhathi, kusengaphambili ukwazi nje ukuthi ungayisebenzisi nini i-powder metallurgy. Ngevolumu ephezulu, izingxenye zensimbi ezinobunzima obumaphakathi, i-P/M iyawina. Ngomthamo ophansi wama-superalloy anezidingo zokushisa ezeqisayo, ukufakwa kwe-investimenti kungase kube yimpendulo. Ubungcweti bulele ekwenzeni leso sinqumo.
Ukuminyana kuyiNkosi, Kodwa Ukungaguquguquki kunguMbuso
Yonke incwadi ikhuluma ngokuthola ukuminyana okuphezulu. Inselele yomhlaba wangempela ukuzuza ukuminyana okufanayo, ikakhulukazi ezingxenyeni ezinezindonga eziqondile nezici ezinamaleveli amaningi. Intuthuko engatholi ukucindezelwa okwanele wukuthuthukiswa kwesofthiwe yokulingisa yokuhlanganisa impushana. Izilinganiso zakuqala zaziyiziqondiso ezinzima. Manje, bangakwazi ukubikezela ukuminyana ngokunemba okumangalisayo, okuvumela ukulungiswa kwamathuluzi ngaphambi kokusikwa kwethuluzi elilodwa. Sisebenzise ukulingisa okukodwa okunjalo ukuze sidizayine kabusha i-punch ye-sprocket, sengeza i-taper encane ebesingeke siyicabangele ngokunembile. Yehlise ukuhluka kokuminyana ukusuka cishe ku-0.3 g/cm3 kuya ngaphansi kuka-0.1 g/cm3 kuyo yonke iphrofayela yezinyo. Lokho kuhumushele ngqo ekusebenzeni kokugqoka okungaguquki.
Nokho, isofthiwe inhle kuphela njengokufakwayo. Izici zokungqubuzana kwempushana ngokumelene nensimbi yethuluzi, eshintsha ngokuswakama nokuhlukahluka kwenqwaba, iwushintsho olukhulu. Usadinga ukwenza izivivinyo zomzimba. Intuthuko nansi iluphu yempendulo: linganisa, yakha, kala (usebenzisa amasu athuthukile njengokuskena kwe-CT kumamephu wokuminyana kwangaphakathi), bese wenza ngcono imodeli yokulingisa. Iyaphindaphinda futhi ihamba kancane, kodwa yindlela owakha ngayo izinqubo eziqinile.
Lokhu kuphishekela ukungaguquguquki yikho okushayela ukwamukelwa kwemishini yokunyathelisa eyinkimbinkimbi—hhayi nje esheshayo, kodwa elawula kangcono ukulandelana kokugcwalisa, ukucindezela, nokukhipha. Ukungabaza kancane ngesikhathi sokugcina sokucinana kungadala iphutha. Yilawa ma minutiae ahlukanisa i-prototype yelebhu nenqubo elungele ukukhiqiza. Uma uhlinzeka ngezingxenye zomugqa wokuhlanganisa, isivuno esingu-99.5% asisihle ngokwanele. Udinga u-99.95%. Ukuthola lowo 0.45% wokugcina kulapho amashumi eminyaka esipiliyoni, njengaleso esishunyekiwe kumafemu osekunesikhathi eside, sikhokha khona.
I-Alloy Conundrum kanye ne-Supply Chain
Ukusebenza ngama-alloys akhethekile afana ne-nickel noma asekelwe ku-cobalt nge-P/M kuyindawo yomngcele. Intuthuko iyabonakala kodwa iza nekhanda elibuhlungu. Impushana ibiza kakhulu, futhi imvamisa ubhekana nezinto ezisebenzayo ezidinga ukulawulwa komkhathi okungenasici. Inzuzo, nokho, ingaba yinhle kakhulu: izakhi ezinama-microstructures amahle, afanayo okungenakwenzeka ukuzuzwa ngokusakaza, ezinikeza ukumelana okungcono nokukhuphuka kwezinga lokushisa eliphezulu.
Kodwa nansi inkinga esebenzayo: ubuthakathaka be-supply chain. Ngesikhathi sephrojekthi ehilela i-nickel superalloy turbine seal, umphakeli wethu ojwayelekile wempushana ubenekhwalithi ephezulu. Okuqukethwe komoyampilo eqeqebeni labo bekuphezulu kakhulu. Asikwazanga ukuyisebenzisa. Ukuthola enye indlela ngesikhathi esifushane kwakuyiphupho elibi. Lokhu kugqamise ukuthi inqubekelaphambili ekusebenzeni kwento ethile ayinangqondo uma ungakwazi ukuthola isitoko ngokwethembeka. Kusiqhubele ekubeni sifanelekele abahlinzeki abaningi, okuwuhlelo olubizayo futhi oludla isikhathi lokuvivinya nokuhlola. Lolu uhlangothi olungathandeki lwezinto ezithuthukisiwe.
Izinkampani eziye zazulazula emhlabeni wokulingisa ngalawa ma-alloys, njenge QSY, cishe sebesungule amashaneli okuthola impahla kanye nokuqonda okujulile kwensimbi. Leso sisekelo solwazi siyadluliswa futhi sibalulekile. Bangaqonda ukuthi kungani ungase wengeze inani elincane lesici somhlaba esiyivelakancane ekuhlanganisweni kwempushana ukuze uthuthukise ukuminyana kwe-sintered, ngoba babone izimiso ezifanayo kukhemistri encibilikayo yokusakazwa. Lokhu kuxutshwa kwempova kolwazi oluvela kubuchwepheshe bokubumba obuhlukene kuyindlela ethule kodwa enamandla yokuthuthukisa imboni.
Ngakho-ke, Iyini I-Trajectory Yangempela?
Uma ubheka ukudlula ukumaketha, umkhondo we ukuthuthuka kwe-powder metallurgy iqondana nokuhlanganiswa nobuqili. Akukhona mayelana nokunyathelisa okusha okuyisimangaliso. Imayelana nokuxhumanisa kangcono intambo yedizayini yedijithali (i-DFAM ye-P/M), ngokulingisa ukucinana okubikezelwayo, okuboshelwe ekulawuleni okuqinile kwe-sintering, futhi okusekelwa uchwepheshe wangemva kokucubungula oqonda i-sintered microstructure. Umgomo uwukunciphisa isici sokumangala.
Umdlalo wokugcina uwukwenza i-powder metallurgy ibe yinketho yokuqala, hhayi ukubuyela emuva, ukuze uthole izinhlelo zokusebenza ezinzima kakhulu. Lokho kusho ukukholisa onjiniyela bokuklama ukuthi bangathola izingxenye ezinokwethenjelwa, ezisebenza kahle kakhulu ngaphandle kokuqonda i-arcana yesithando somlilo esishisayo. Ukuthembana kuvela ekuvumelaneni okubonisiwe. Lokho kwakhiwe ingxenye ngengxenye, phakathi neminyaka, ngokuxazulula izinkinga ezingathandeki zokushiswa kwezithako zokugcoba kanye nomklamo wesakhiwo. Okuhlangenwe nakho okuhlangene kwemboni, ehlala ezinkampanini eziye zadlula emijikelezweni yezinguquko zempahla kanye nezinqubo, ezishintsha intuthuko ehlukanisiwe yezobuchwepheshe ibe indlela yokukhiqiza ethembekile. Isinyathelo esikhulu esilandelayo singase sibe ukumisa indlela esabelana ngayo nalo lonke lolu lwazi lwenqubo oluthule, oluzuzwe kanzima.
