Uzwa 'ukukhishwa kwe-wax ngokwezifiso' futhi ngokushesha ucabange ngobucwebe obuyinkimbinkimbi noma mhlawumbe lezo zingcezu zobuciko ezinemininingwane. Yilokho ugibe ovamile. Emkhakheni wezimboni, ikakhulukazi lapho ngichithe khona iminyaka, kuyisilo esihluke ngokuphelele. Kuncane mayelana nobuhle-okokuqala nokuningi mayelana nokuxazulula inkinga lapho ingekho ingxenye engaphandle kweshalofu ekhona. Ingxenye 'yenkambiso' ayikona ukunethezeka; kuyisidingo. Kusho ukuthi uvamise ukubhekana nengxenye okumele ibhekane nokushisa okukhulu, ukugqwala okunganqamuki, noma ukucindezelwa kwemishini okuhlekisayo. Iphethini ye-wax imane iyisiqalo sengxoxo ende kakhulu, exakile phakathi kwenhloso yokuklama kanye neqiniso le-metallurgical.
Igobolondo Lendaba: Akuyona Nje Isikhunta
Izincazelo eziningi zigxuma ziqonde kusuka kungcina kuya ensimbi. Beqa isigaba esibucayi kakhulu, esishisayo: ukwakha igobolondo le-ceramic. Yilapho uwina khona noma ulahlekelwa umsebenzi. Asigcini nje ngokucwilisa isihlahla sengcina odakeni; sakha igobolondo elikwazi ukumelana no-1500°C+ insimbi encibilikisiwe ngaphandle kokuqhekeka, ukucwila, noma ukusabela ngensimbi. Endaweni efana ne-QSY, neminyaka engamashumi amathathu ekubunjweni kwegobolondo nokutshala imali, bayakuthola lokhu. Inqubo akulona uthando oluzenzakalelayo; kuyisiko lemanyuwali, isendlalelo nesendlalelo. Umswakamo ngalolo suku, isikhathi sokoma phakathi kwamajazi, inhlansi yesihlabathi se-stucco—inguquko ngayinye ishiya izigxivizo zeminwe endaweni yokugcina yokubunjwa. Yenza okungalungile, futhi uthola igobolondo elibukeka liphelele kuze kube yilapho lifika esithandweni somlilo, bese lihluleka ngokuyinhlekelele. Ngibonile. Iqoqo lama-valve embonini kawoyela negesi, lonakele ngenxa yokuthi uchwepheshe omusha uphuthume imijikelezo yokomisa. Amagobolondo ayebukeka emuhle, kodwa abamba umswakama. Umfutho we-steam ngesikhathi sokuthululwa ulingana namabhamuza angaphakathi nezinsimbi ezilahliwe. Leso yisifundo se-$20,000 sokubekezela.
Yingakho ukubambisana nohlangothi lwe-Foundry's machining kungaxoxiswana. Ake sithi uphonsa impompi ngensimbi engagqwali eyi-duplex. Ukulingisa kuzoba nesibonelelo esithile sesitoko. Ithimba lemishini ye-CNC lidinga ukuqonda ukuhlanekezela okungenzeka kokulingisa, umphumela wesikhumba, nalapho ukuncipha okungenzeka kube khona ukuhlela ukusikeka kwabo ngendlela efanele. Uma ukuhlukaniswa kwe-casting ne-CNC kungaphansi kophahla olulodwa, njengase-Qingdao Qiangsenyuan Technology Co., Ltd., leyo loop yempendulo iqinile. Umdwebi wemishini angakwazi ukuhamba aye endaweni eyi-foundry, akhombe indawo yesango eyinkinga kusampula, futhi angalungisa isistimu yokugenca ukuze agijime okulandelayo. Lokho kuhlanganiswa kuguqula i-prototype ibe yingxenye yokukhiqiza esebenzayo.
Ukukhetha okubalulekile kungolunye ungqimba. Abantu bacacisa insimbi engagqwali futhi bacabange ukuthi sekuphelile. Kodwa ingabe sikhuluma 304 ngokugqwala okuvamile, noma 17-4 PH ukuze uthole amandla, noma i-super duplex yezindawo ze-chloride? Ngezinhlelo zokusebenza ezishisa kakhulu, ugxumela kuma-alloys asuselwa ku-nickel njenge-Inconel 718. Ngayinye yalezi ziziphatha ngendlela ehlukile ngesikhathi ngokwezifiso ezilahlekile ze-wax cast inqubo. I-nickel alloys, isibonelo, i-viscous. Azigelezi njenge-aluminium. Isistimu yakho yokufaka isango kufanele ibe nesandla esivulekile, izinga lokushisa lokuthela kwakho kufanele licace ukuze ugweme ukuhlukaniswa. Iphethini ye-wax ye-Inconel turbine blade ayisona nje isimo; ipulani lokuphatha okushisayo.
Lapho Umkhuba Uhlangana Khona Nomhlaba Wangempela: Indaba Yekesi Legiya
Ngikhumbula iphrojekthi yesistimu ye-propulsion yasolwandle. Iklayenti lalidinga izindlu zekesi legiya langokwezifiso—amashaneli angaphakathi ayinkimbinkimbi okupholisa, izindawo zokukhweza okwakudingeka zifakwe ukuze kugwenywe izindawo ezibuthakathaka ekushiseleni, futhi konke kwakufanele kube kungxube ye-nickel-chromium ukumelana namanzi olwandle. Imodeli ye-CAD yayibukeka ihlanzekile. Kodwa umjikelezo wokuqala we-prototyping wehlulekile. Hhayi ngokuphawulekayo, kodwa ngobuqili. Ukuhlolwa kwengcindezi kwembule i-micro-porosity engxenyeni ebalulekile yodonga.
Ukusabela kwamadolo kuwukusola insimbi. Kodwa imbangela yangempela kwakuyingcina. Ukwakhiwa kwe-wax kwasekuqaleni kunomlotha omningi kancane. Lapho isha, yashiya insalela encane, entekenteke eyamuncwa igobolondo le-ceramic, yakha indawo ebuthakathaka yendawo lapho insimbi encibilikisiwe yayingena khona, ibangele isici. Isixazululo kwakungekhona ukushintsha ingxubevange; kwakuwukushintshela ku-wax enomlotha omncane, eyenziwe nge-polymer yephethini. Kubize ngaphezulu, kodwa kwayixazulula inkinga. Lona umsebenzi we-grunt ngokwezifiso ezilahlekile ze-wax cast ukuthi akekho okhuluma ngakho. Isayensi yezinto zokwakha, hhayi nje ukubaza.
Sisebenze nethimba lonjiniyela, silungisa idizayini ukuze ifake okusalungiswa okucashile ezindaweni umklami acabanga ukuthi zingaba nezindonga eziqondile, sengeza izimbambo ezincane eziqinisayo ezingaphazamisi umsebenzi kodwa eziqinisekisa ubuqotho besikhunta. Ingxenye yokugcina, ngemva kwama-prototypes amathathu aphindaphindiwe, yaphumelela yonke i-NDT nokuhlolwa kwengcindezi. Manje isisebenza emikhunjini yesevisi yasolwandle. Iwebhusayithi yeklayenti ingase ivele ibonise ikesi legiya elicwebezelayo, kodwa kithi, yindaba ye-wax chemistry kanye nezinkulumompikiswano zokuqina kodonga.
I-Machining Handshake: Akukho Ukulingisa kuyisiqhingi
Lokhu kubalulekile. Awulokothi nje ulethe ukusakaza okungaphekiwe. I ngokwezifiso ezilahlekile ze-wax cast ukuthi, kuma-95% ezimo zezimboni, akunalutho ngesimo se-net-net. 'Ukuqeda' akukhona ukubhuqa; ukunemba kwe-CNC machining kuya kubukhulu bokugcina. I-synergy lapha iyikho konke. Uma indlu yokulingisa kanye nesitolo somshini kuyizinhlangano ezihlukene, ulahlekelwa ukwethembeka. Ukubekezelelana kuyalahleka ekuhumusheni.
Emsebenzini ohlanganisiwe, inqubo ayinamthungo. I-Foundry ikhiqiza ukulingisa ngezindawo ezichazwe ngaphambilini zedatha—lawa amaphuzu ayisithenjwa umshini we-CNC ozowasebenzisa. Bayazi ukuthi singakanani isitoko okufanele basishiye (imvamisa singu-1-3mm, kodwa ngezinye izikhathi sibe sincane ngo-0.5mm ezicini ezibalulekile). Enkampanini efana ne-QSY, lesi isinkwa sabo nebhotela. Bangakwazi ukuphonsa indikimba yevalvu yensimbi engagqwali enama-flange abalulekile, futhi umnyango wabo wangaphakathi we-CNC uzogaya izigxivizo zobuso, ubhoboze futhi ucofe izimbobo zamabholithi, futhi uphathe isihlalo samavalvu sangaphakathi—konke kubhekisela kuma-datum afanayo okusakaza. Lokhu kuqinisekisa ukugxila nokuqondanisa ongeke ukwazi ukukufeza ngokushisela noma ukuhlanganisa izingcezu ezihlukene.
Ngihlole izingxenye zamaketanga anikezela ngempahla ahlukene. Ukulingisa kuvela kumthengisi oyedwa, umshini usuka komunye. Umakhi, ukuze afinyelele ukubekezelela okuqinile, angase asike esikhumbeni esikhonjiwe futhi angene endaweni engaphansi komhlaba engabonakali. I-Scrap. Noma okubi nakakhulu, isici esicashile. Uma ihlanganiswa, ithimba labasebenza ngomshini liyabazi 'ubuntu' bokulingisayo—liyazi ukuthi kungenzeka kuphi ukuncipha, ngakho-ke lizolungisa izindlela zalo zamathuluzi. Bangenza ukuhlolwa kokuqina okusheshayo endaweni futhi bazise i-Foundry ukuthi ilungise ukuphatha ukushisa kwenqwaba elandelayo. Le nqubo evaliwe yiyona eyenza ukukhiqiza ngokwezifiso kwangempela kuthembeke.
I-Alloy Conundrum: Ngaphezu Kweshidi Ledatha
Amaklayenti eza nezinto ezibonakalayo: ASTM A351 CF8M. Lokho umlingisi ojwayelekile ongenabala. Kuhle. Kepha izakhiwo zemishini kanye nokumelana nokugqwala kwaleyo alloy kunqunywa ngokuqondile ukwelashwa okushisayo ngemuva ngokwezifiso ezilahlekile ze-wax cast. Isakhiwo se-as-cast siyaphuka, nama-carbides aginqika eduze kwemingcele yokusanhlamvu. Udinga isixazululo sokwelapha ukushisa okushisayo—ukushisisa kuze kufike ku-1100°C futhi ukucime ngokushesha ukuze ubuyisele lawo ma-carbides esixazululweni.
I-quench yinto ekhohlisayo. Ukucisha kancane kakhulu, futhi ama-carbides aphinde abe nemvula, abulale ukumelana nokugqwala. Cima ngokushesha kakhulu engxenyeni eyinkimbinkimbi, enezindonga ezincane, futhi wenza ukuhlanekezela noma ukuqhekeka. Kuyisenzo sokulinganisa. Ku-cobalt noma ama-superalloys asekelwe ku-nickel, ukwelashwa kokushisa kuyinkimbinkimbi nakakhulu, ngokuvamile kuhlanganisa imijikelezo yokuguga ukuze kuthuthukiswe izigaba zokuqinisa. Awukwazi ukuvele ukhiphe lokhu emshinini wokushisa ojwayelekile. Idinga ukuba yingxenye yokugeleza kwenqubo. I-Foundry kumele ibe nokulawula noma uzakwethu othembeke ngokujulile kulesi sigaba. Ingxenye ingaphonswa kahle futhi yenziwe ngomshini, kodwa yonakale esithandweni. Ngikubonile kwenzeka ngenqwaba yezinsimbi eziningi. Amaphepha athi alashwe ukushisa. Babengekho. Bahlulekile enkundleni phakathi nezinyanga ngenxa ye-stress corrosion cracking. Imbangela? Inzwa yezinga lokushisa ephukile esithandweni somlilo engazange ibonwe.
Yilapho opharetha besikhathi eside benomkhawulo. Bakhe inkumbulo yesikhungo. Bayazi ukuthi ukushisa okuthile kwe-alloy okuvela kumnikezeli othile kuvame ukusebenza ekugcineni okuphansi kokuqukethwe kwe-silicon, okuthinta uketshezi, ngakho-ke bazolungisa izinga lokushisa lokuthulula ngamadigri ayi-15. Lolo hlobo lolwazi alukho encwadini yesandla; ikwinothiphedi ehhovisi lomphathi we-Foundry.
Ukubheka I-Horizon: Hhayi Ukuphindaphinda nje, kodwa Ukunika amandla
Ikusasa le ngokwezifiso ezilahlekile ze-wax cast ayikona ukwenza amakhophi ashibhile. Imayelana nokunika amandla imiklamo engenakwenzeka nganoma iyiphi enye indlela. Cabanga ngethiphu yesijovo se-monolithic esinamashaneli okupholisa angaphakathi alandela iphrofayili ye-aerodynamic—ayikwazi ukuyifaka ngomshini, ayikwazi ukuyifoja. Uyaliphonsa. Noma ukufakelwa okuhlinzayo okunesakhiwo esingaphezulu esinezimbobo se-ingrowth yamathambo ehlanganiswe nenkambo eqinile. Lokho ukutshala imali.
Intambo yedijithali iyaqina. Manje, singathatha imodeli ye-CAD, sisebenzise isofthiwe yokulingisa ukuze sibikezele ukuncipha kokuqina nezindawo ezishisayo, futhi silungise umklamo wesihlahla se-wax ngedijithali ngaphambi kokusika ithuluzi. Lokhu kunciphisa ukuphindaphinda kwe-prototype kusuka kokune kwehle kuye kokukodwa noma kokubili. Kodwa isofthiwe ayilona i-oracle; ingumhlahlandlela. Usamdinga umuntu ukuze ahumushe imiphumela yawo, ukuze wazi ukuthi indawo ekahle yesango lokulingisa ingase ingenzeki ukususa isango ngaphandle kokulimaza ingxenye. Ubuciko abushabalali; ikhuphuka ikhuphukela esigabeni sokulungiselela idijithali.
Kumkhiqizi, isiphakamiso senani siyashintsha. Akuseyona thina esiphonsa insimbi. Yithi esihlinzeka ngengxenye yensimbi esebenzayo, enobuqotho obuphezulu kusukela kumklamo wakho wedijithali, nayo yonke into ebalulekile nenqubo eqinile okufundiswa yona amashumi amathathu eminyaka okusebenzelana ne-cast iron, insimbi, i-stainless, kanye nalawo ma-alloys akhethekile acwebezelayo. Ungabona le ndlela kusayithi elifana ne-tsingtaocnc.com—ayisiyo ekhazimulayo, iyiqiniso. Ibala amakhono (ukusakaza, ukwenza imishini, izinto) njengezinyathelo ezixhumene ekugelezeni okukodwa. Indaba yangempela leyo. Umkhiqizo awukona ukulingisa; ingxenye eqinisekisiwe, elungele ukuyifaka efike ngesikhathi futhi esebenzayo. Yilokho okugcina isitolo esifana ne-QSY sisebenza iminyaka engaphezu kwengama-30 embonini enzima. Akuwona umlingo; ukunaka imininingwane engathandeki, ebucayi eyenzekayo phakathi kwegumbi le-wax nomshini we-CNC.
