Uma uzwa 'i-investment casting Inconel', umcabango osheshayo ngokuvamile umayelana nokusebenza ngokwedlulele—ama-turbine blades, ukuphindaphindeka kwe-aerospace, lolo hlobo lwento. Kodwa kukhona igebe phakathi kweshidi le-spec kanye nokuthela kwangempela. Izitolo eziningi zithi zingakwenza, kodwa ukuphatha lawa ma-alloys asekelwe ku-nickel, ikakhulukazi okuthandwa yi-Inconel 718 noma 625, akukhona nje ukuba negobolondo le-ceramic nesithando somlilo. Iqhinga langempela likukuphatha okushisayo, idizayini yesango, futhi ngokungagwegwesi, ukwazi ukuthi kufanele uhambe nini ku-geometry ecela inkinga nje. Ngibone amaphrojekthi angaphezu kweyodwa ngoba bekugxilwe ebangeni lezinto ezibonakalayo emdwebeni, hhayi ukuthi liziphatha kanjani uma lincibilika futhi ligijima esikhunjini.
Ingxubevange Akuyona Indaba Yonke
Ukuqala ngokuncibilika yilapho uhlukanisa khona inkulumo nomsebenzi. I-Inconel inomkhuba omubi wokusabela uma wenza umkhathi ungalungile. Siwaqinisa ngokuqinile ama-vacuum furnaces, kodwa noma kunjalo, ama-trace elements angabangela izinkinga. Akukhona nje ukuvimbela i-oxidation; imayelana nokulawula izinga lokupholisa kusukela ekuqaleni. Ngokushesha kakhulu, futhi uvala izingcindezi futhi ukhuthaze i-micro-porosity ezohluleka ukuhlolwa kamuva. Ukunensa kakhulu, futhi uthola ukukhula okusanhlamvu okweqile, kubulale izici zomshini ozisakazela zona kwasekuqaleni.
Ngikhumbula iqoqo lengxenye yesakhiwo esimile ku-turbine esezweni. Ukuphrinta kubize ukutshala imali ku-Inconel 718, izinto ezijwayelekile. Kodwa ukuguquguquka kodonga kwakunamandla. Sathela, futhi i-NDT yabonisa isikweletu esihlanzekile. Kodwa-ke, phakathi nesigaba sokwelashwa kokushisa kwesisombululo, izingxenye ezimbalwa zasonteka ngale kokuhlenga. Umlandu? Ukuqina okungalingani okudala amaphethini engcindezi yangaphakathi ukwelapha okushisa okusanda kubhebhetheka. I-alloy ihlangabezane ne-spec, kodwa inqubo ayizange ibale ukuziphatha kwayo okuqondile kokufinyezwa kokushisa. Kwadingeka sibuyele emuva, siklame kabusha ukutshala imali i-gating ukuze udale ukupholisa okufanayo okufanayo, futhi wengeze isinyathelo sokunciphisa ingcindezi ngaphambi komjikelezo ogcwele wokwelapha ukushisa. Yengeza izindleko nesikhathi, kodwa kwakuyilokho noma ukuchithwa.
Yilapho isipiliyoni ngeketango eligcwele libalulekile. Isitolo esivele sithele insimbi bese siyithumela kuyisibopho. Udinga i-Foundry kanye nemishini ngaphansi kophahla olulodwa, noma okungenani ngokubambisana okuqinile. Ngike ngasebenza ne-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) ku-prototyping ngaphambilini. Ukusethwa kwawo kunengqondo—iminyaka engaphezu kwengu-30 ekulingeni nasekukhiqizeni imishini, ukuphatha yonke into kusukela ekubunjweni kwegobolondo kuye kuye ukutshala imali bese i-CNC isebenza ezintweni ezifanayo. Ku-Inconel, lokho kuqhubeka kubalulekile. Ngeke ube nendlu yokulingisa esola umakhinikhi ngendawo eqinile, futhi umakhinikhi asole abalingiswa ababi. Uma kuyibhizinisi elilodwa, iluphu yempendulo iba ngokushesha. Babona umjikelezo wokuphila ogcwele, kusukela ku-wax kuya engxenyeni ephelile, eyazisa izinqumo ezingcono esiteji sokuthulula.
Lapho Inqubo Iluma Emuva
Isakhiwo seShell singenye inkundla yempi ethule. Ngama-carbon steels, uhlelo olujwayelekile lwe-slurry ne-stucco lungandiza. Ku-Inconel, ikakhulukazi izingxenye zephaseji zangaphakathi ezinodonga oluncane noma eziyinkimbinkimbi, igobolondo lidinga ukuqina okushisayo nokugoqeka. Uma igobolondo liqine kakhulu, livimbela ukubunjwa ngesikhathi sokupholisa, okuholela ezinyembezini ezishisayo. Uma ibuthakathaka kakhulu, ingase iphuke ngesikhathi iphathwa noma izithele yona. Sizame ngezingxube ezihlukene eziphikisayo—isilica ehlanganisiwe, i-zircon, i-alumina—sizama ukuthola ibhalansi elungile yomzimba othile wamavalvu we-Inconel 625. Kuthathe izikhathi ezintathu ukuze kutholwe igobolondo elizosinda ekuhoxisweni kwe-autoclave kanye nokuthululwa okungu-1500°C+ ngaphandle kokugoqa noma ukubangela izinkinga zokuqeda phezulu engxenyeni yabalingisi.
Ukunemba kobukhulu yizwe elithenjisiwe le ukutshala imali, kodwa nge-Inconel, ukuncipha akuhlali kubikezelwa. Isibonelelo sokuncipha esishicilelwe siyisiqalo, akusona isiqinisekiso. Isici sangempela sincike engxenyeni yejometri, i-gating, nokuthi siyiqondisa kanjani kuqoqo. Sigcina umtapo wezincwadi wokulungisa wengxenye yethu evamile yemindeni. Umumo olula we-cylindrical ungahle uhambisane nencwadi yokufunda ngo-2.1% wokuncipha komugqa. Kodwa ingxenye enezimbambo eziphambanayo, njengendlu ye-compressor, izodonsa ngokuhlukile. Lokhu sikufunde kabuhlungu nge-oda lakuqala le-aerospace. Sisebenzise umthetho wokuncipha ojwayelekile, futhi abalingisi bokugcina baphelelwe ukubekezelela ezindaweni ezibucayi zokukhwelana. Kwadingeka kusetshenziswe kabusha i-wax die, okwabuyisela iphrojekthi emavikini ambalwa. Manje, kunoma iyiphi i-geometry eyinkimbinkimbi entsha, sizosebenzisa ukulingisa uma ivolumu ikufakazela lokho, noma sithele ngisho ne-prototype eyodwa yomhlatshelo ngengxubevange eshibhile kuqala ukuze silinganise ukuncipha kwangempela.
I-post-casting yilapho abaningi becabanga ukuthi umsebenzi onzima wenziwa. Akunjalo. Amandla e-Inconel avela ekuqineni kwemvula. Ku-718, lokho kusho ukulandelana okunembile: ukwelashwa kwesixazululo, ukucisha, iminyaka. Izinga lokucisha libalulekile. Uma ingxenye iphola kusukela ekushiseni kwesisombululo kancane kakhulu, uthola imvula eningi kakhulu yezigaba zokuqinisa emingceleni yokusanhlamvu, iyenze ibe brittle. Sasinenqwaba lapho indawo yokucisha umlilo yayilayishwe kakhulu, futhi izingxenye eziphakathi nendawo zaphola kancane. Baphumelele ukuhlolwa kokuqina kokuqala kodwa bahluleka kakhulu ekuhlolweni kokukhathala kamuva. Ukuhlaziywa kokwehluleka kukhomba ngqo kusakhiwo esincane esonakalisiwe esivela ekucimeni okungalingani. Kwaba ukwehluleka kwemishini, hhayi ukwakhiwa kwensimbi, kodwa umphumela wawufana—izicucu.
Imishini: Enye Ingxenye Yempi
Yingakho imodeli ehlanganisiwe yenkampani efana ne-QSY ibalulekile. Ukusakaza ingxenye ephelele ye-Inconel kuwuhhafu womsebenzi. Uma imishini ye-CNC engezansi ingalungiselelwa imvelo yokwenza umsebenzi ibe lukhuni, uzolimaza ukusakaza okuhle. I-Inconel iyaluma futhi iqinile. Ihleka ithuluzi elijwayelekile. Udinga ukusethwa okuqinile, amamaki e-carbide akhethekile, isipholile esinengcindezi ephezulu ukuze uphule i-chip, nezinga lokuphakelayo eliphansi, elingaguquki. Umgomo uwukugunda impahla ngaphandle kokuvumela ukushisa kwakheke, okuvele kuqinise indawo ozama ukuyisika.
Sake sathola ubakaki owenziwe kahle we-Inconel 718, okwaze kwaba yilapho umashini wethu ethatha izigayo ezintathu ezibizayo ezama ukugaya iflethi elilula. Inkinga? Isikhumba esibunjiweyo, ngenkathi sizwakala sizwakala, sasinokwakheka okuncane okuqinile, okushintshiwe ngokuthintana negobolondo. Imingcele yethu evamile yomshini, ebisebenza ngaphakathi kwengxenye, ibinolaka kakhulu kuleso sikhumba. Bekufanele sengeze ukukhanya, iphasi yokuqala elukhuni nemingcele ethile ukuze nje sidabule lolo ungqimba olungaphezulu. Kuyi-nuance oyifunda kuphela ngokwenza, noma ngokusebenzisana nozakwethu umnyango wakhe we-CNC ukhuluma nsuku zonke nabasunguli bakhe. Ihlola indawo yabo ku tsngtaocnc.com, uyabona ukuthi babala bobabili ukutshala imali kanye ne-CNC machining yama-alloys asekelwe ku-nickel. Lolo lwazi oludidiyelwe yilo oluvimba lezi zimanga ezibizayo. Umakhi wemishini uyazi ukuthi yini okufanele ayilindele enqubweni ye-Foundry, futhi umsunguli uyazi ukuthi yini i-machinist edinga ukusika okuhlanzekile.
Ubuqotho bobuso bubalulekile ezingxenyeni ezibucayi zokukhathala. Ukudlula kabi komshini kungethula imifantu emincane noma ukucindezelwa okuqinile okuba amaphuzu okuqala okwehluleka. Yilapho izinyathelo zokugcina zokulungisa—ngokuvamile ukugaya noma ukucija izindawo ezibucayi—ziba yingxenye yochungechunge lwekhwalithi. Akukona ukucabanga; kuyinqubo ecacisiwe. Ikhono lokulawula lonke lelo chungechunge, kusukela kunsimbi encibilikisiwe ukuya ekugcineni, ngaphansi kwesistimu eyodwa yekhwalithi, kunciphisa okuguquguqukayo ngendlela emangalisayo.
Iqiniso Lokuthola Nokuhlola
Ngakho-ke, lapho uhlola ukukhishwa kwezimali kwe-Inconel, yini okufanele uyibheke ngale kwencwajana yokuthengisa? Okokuqala, buza ngefilosofi yabo yokuphatha ukushisa. Ingabe bavele balandele iresiphi, noma balungisa amapharamitha afana nezinga lokushisa lokuthela kanye nokushisa kwangaphambili kwesikhunta ngokusekelwe engxenyeni yejometri? Okwesibili, hlola ukulandeleka kwabo okubonakalayo. Nge-aerospace noma uwoyela negesi, udinga imibiko egcwele yokuncibilika nokuhlolwa kwekhemistri. Ingabe bangakunikeza lokho? Okwesithathu, futhi okubaluleke kakhulu, bheka amakhono abo ngemuva kokusakaza. Ingabe zifudumeza ukuphathwa kwangaphakathi endlini ku-spec eqinisekisiwe (njenge-AMS 2774)? Ingabe banabo imishini ye-CNC enikezelwe kuma-alloys aqinile, noma bayayikhipha?
Umhlinzeki ofana ne-QSY, enamashumi eminyaka omlando, ngokuvamile unalawa masistimu. Ukukhuluma kwabo ngokusebenza ngokukhethekile kukho kokubili ukusakaza nokwenza imishini yama-alloys akhethekile afana nalawo asekelwe ku-nickel kuwuphawu olubalulekile. Kusho ukuthi kungenzeka bahlangabezane—futhi baxazulula—izinkinga zokusebenzisana phakathi kwezigaba zokulingisa nokuqeda. Abasona nje isitolo sengcina nokuthela; bangabakhiqizi bengxenye. Lowo mehluko ubalulekile.
Okokugcina, qiniseka ngezindleko nesikhathi sokuhola. I-Inconel investment cast ayishibhile noma iyashesha. Ithuluzi lephethini ye-wax inembile. Inqubo yegobolondo iyizinsuku eziningi. Ukwelashwa kokushisa kuwumsebenzi olawulwayo obalulekile. Futhi imishini ihamba kancane. Uma isicaphuna sibonakala sisihle kakhulu ukuba sibe yiqiniso, cishe basika amakhona—mhlawumbe ezingeni le-vacuum ngesikhathi sokuncibilika, noma beqa umjikelezo ofanelekile we-HIP (Hot Isostatic Pressing) ukuze bavale i-porosity, noma basebenzisa amathuluzi ajwayelekile omshini. Noma yibaphi kulabo bazobuya bazohlupha ingxenye yesevisi. Inani alikho kuphawundi yensimbi oyitholayo; ikunqubo elawulwayo, ebhaliwe, nehlanganisiwe ephendula leyo nsimbi ibe ingxenye ethembekile. Yilokho ngempela okukhokhelayo.
