Uma abantu abaningi bezwa 'i-silica sol precision casting', bafanekisela ingxenye engenasici, enomumo wenetha, elungele ukusebenza. Yilokho okufanelekile kokumaketha. Iqiniso, ukugaya kwansuku zonke, ukuxoxisana okuqhubekayo ne-colloidal chemistry, isicelo se-stucco, kanye ne-physics engaxoleli yokuqiniswa kwensimbi. Akukhona nje ukwenza isikhunta; imayelana nobunjiniyela bendawo yesikhashana, enomugqa we-ceramic esebenza ngokubikezelwayo ngaphansi kwensimbi encibilikisiwe engu-1500°C. Izitolo eziningi zilungiswa ebangeni lokugcina lensimbi-okuyinto ebucayi, ngokuqinisekile-kodwa ngokubona kwami, impi yangempela iyanqotshwa noma ilahleke egumbini elinodaka kanye ne-autoclave ekhishwayo. Yilapho i-geometry igcinwa khona noma ihlanekezelwe ngaphambi kokuba kuthelwe iconsi elilodwa lensimbi.
Umbono Oyiphutha Oyinhloko: Kuyi-Binder Nje
Abaningi baphatha i-silica sol njengeglue elilula, isibopho sokubamba ufulawa ophikisayo ndawonye. Lokho kuwukwenza lula ngokweqile okuyingozi. Iwuhlelo oluphilayo. I-viscosity ye-sol, i-pH, nokuqukethwe kwe-SiO2 akuzona nje izinombolo eshidini elicacisiwe; banquma ukuthi ijazi lokuqala limanzisa kanjani iphethini ye-wax, ukuthi idonsa kanjani ngokulinganayo, futhi ekugcineni, isiphetho esingaphezulu sokubunjwa. Ngibone amaqoqo lapho i-sol 'yayindala' kancane, okuholela ekuphenduleni okusheshayo kwe-gelling ne-ethyl silicate hardener. Umphumela? Ijazi eliyinhloko elibhibhayo eliqhekeka kancane ngesikhathi sokukhipha i-waxing, elidala ukonakala emithanjeni kukho konke ukulingisa okukodwa ngesikhathi. Insimbi yayiphelele ngo-316L, kodwa izingxenye zaziyizicucu.
Yilapho ulwazi oluyisisekelo lomphakeli lubalulekile. Udinga uzakwethu oqondayo ukuthi izinto ezisetshenziswayo zikhethekile njengenqubo. Inkampani efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), ngeminyaka yabo engamashumi amathathu ekubunjweni kwegobolondo nokufaka utshalomali, ikuthola lokhu ngokusobala. Akukhona nje ngokukuthengisa i-silica sol; kumayelana nokwazi ukuthi impumelelo yakho i-silica sol precision casting inqubo incike ekuvumelaneni kwalolo ketshezi. Ukusebenza kwabo kwesikhathi eside kuphakamisa ukujwayelana okujulile, okungokoqobo nalawa manuances abalulekile, uhlobo oluvela kuphela ekugijimeni imigqa yokukhiqiza unyaka nonyaka.
Ukukhethwa kukafulawa we-refractory-silica ehlanganisiwe, i-zircon, noma into efana ne-mullite-kushade nokuziphatha kwe-sol. I-Zircon idinga i-sol viscosity ehlukile kunesilica ehlanganisiwe ukuze idiphuke kahle. Ukumataniswa. Awukwazi ukuthuthukisa eyodwa ngokuhlukaniswa. Lokhu sikufunde kanzima kuphrojekthi ye-prototype ye-turbine blade. Sishintshele kufulawa we-zircon ocolekile ukuze sikhiqize imininingwane engcono kodwa sagcina amapharamitha wokucwilisa afana. I-slurry yayiminyene kakhulu, amakhona aba namabhuloho, futhi igobolondo lakhula izindawo ezinamandla aphansi. Amagobolondo ayelokhu ephuka ngesikhathi ephathwa. Isifundo esibizayo ekucabangeni kwesistimu.
Umdanso Wokwakha Amagobolondo: I-Layer-by-Layer Compromise
Ukwakha igobolondo kulapho ithiyori ihlangabezana neqiniso elingcolile lesitezi sesitolo. Incwadi ithi amajazi angama-7-9. Kodwa ngokukhishwa kwensimbi yengxenye ewugqinsi? Ungase udinge amajazi amaningi okulondoloza ukuze uthole amandla, kodwa ijazi ngalinye lengeza engcupheni yokubamba ingcindezi ngesikhathi somiswa. Ukuze uthole ingxenye enezindonga ezincane, eyinkimbinkimbi yensimbi engagqwali, ungase ubeke phambili amajazi ambalwa, acolekile ukuze ugweme ukugcwalisa imininingwane. Ukuvumelana phakathi kwamandla aluhlaza, ukungeneka, nokunemba kobukhulu bokugcina.
Ukomisa phakathi kwamajazi ukuguquguquka okungacatshangwa kakhulu. Akukhona nje ngesikhathi; imayelana nokugeleza komoya, umswakama, nokufana kwezinga lokushisa ekamelweni lokomisa. Ukusalungiswa okuncane kungabangela uhlangothi olulodwa lweqoqo ukuthi lome ngokushesha, okuholela ekucindezelekeni okuhlukile. Sake saba nenkinga eqhubekayo yokuqhekeka kwegobolondo ohlangothini olulodwa lwama-racks ethu okomisa. Kusithathe amasonto ukukulandelela emuva ku-HVAC vent ebidala isimo sezulu esincane. Ukulungiswa kwakungekho kufomula ye-slurry; bekukubaphathi besikhungo.
I-Stuccoing ingenye ubuciko. Ubukhulu nohlobo lwe-stucco—futhi, i-zircon, i-silica ehlanganisiwe, i-alumino-silicate—inquma ukuqina kwegobolondo nokumelana nokungena kwensimbi. Kuhle kakhulu, futhi uminyanisa ukuphuma kwegesi ngesikhathi sokuthela, okuholela ku-porosity yegesi ekusakazeni. Imaholoholo, futhi uthola indawo yangaphakathi emagebhugebhu engabangela ukungena kwensimbi nokuqedwa kahle. Okwama-alloys asezingeni eliphezulu QSY Uhlu, njengama-alloys asekelwe ku-nickel kanye ne-cobalt, anamaphuzu aphezulu ancibilikayo kanye noketshezi oluhlukile, isu le-stucco lingase lishintshe ukuze lithande ukuphikiswa okuphakeme kanye nokumelana nokushaqeka okushisayo. Okuhlangenwe nakho kwabo kulo lonke uhla olubanzi kangaka lwempahla, kusukela kunsimbi ekhonjiwe kuya kuma-alloys akhethekile, kusho ukuthi kudingeke ukuthi baphumelele kulokhu kulungiswa.
I-Dewaxing: Isikhathi Sokucindezeleka Okuphezulu
Lokhu ukuhlolwa kweqiniso kokuqala kwegobolondo lakho. Konke lokho kwendlalwa ngokucophelela sekuzokhula ngokushesha njengoba i-wax inyibilika futhi ikhula. Ukucindezela kwe-autoclave nezinga lerempu yezinga lokushisa kubalulekile. Ngokushesha kakhulu, futhi ukucindezela kwe-hydraulic kwe-wax kuzoqhekeka ngisho negobolondo elakhiwe kahle. Ukunensa kakhulu, futhi uzibeka engcupheni yokukhishwa kwe-wax okungaphelele, okuholela emlilweni kanye nokukhubazeka kwekhabhoni ngesikhathi sokutubeka.
Sibe nenqwaba yamagobolondo kwezinye imizimba yamavalvu ehlala eqhekeka kusisekelo se-sprue. Amagobolondo ayebukeka ephelele. Sahlola yonke into—i-slurry, iyomisa, i-stucco. Ekugcineni, sabheka ingcina ngokwayo. Umhlinzeki omusha ube ne-coefficient ephezulu kancane yokunwetshwa kokushisa. Igobolondo, elidizayinelwe iphrofayela yokunweba ye-wax endala, ayikwazanga ukuqukatha ingcindezi eyengeziwe. Isixazululo kwaba ukuguqula umjikelezo we-autoclave, ukwethula i-pre-pressure soak emfushane ukuze kuthambise i-wax core ngaphambi kokuqhuma kwesitimu esikhulu. Yengeze imizuzu emi-3 emjikelezweni kodwa yasindisa izinkulungwane emfucumfucwini.
Ukushiswa Nokuthululwa: Lapho Igobolondo Le-Ceramic Lithola Ukuhlala Kwalo
Ukutubeka akukhona nje ukushisa izinsalela zengcina. Imayelana nokucwilisa i-ceramic, ukuthuthukisa amandla ayo okugcina okushisa. Irempu eya ku-1000°C+ idinga ukulawulwa ukuze igweme ukushaqeka okushisayo. Noma iyiphi i-carbon eyinsalela evela ku-wax ingakha umoya onciphisayo ngaphakathi kwegobolondo, okuthi kwamanye ama-alloys afana nezinsimbi ezithile ezingagqwali, kungaba yingozi kumakhemikhali angaphezulu.
Bese kulandela ukuthulula. Kulapho-ke ukuqina kwegobolondo kubalulekile. Insimbi encibilikisiwe igeleza, amagesi adinga ukuphuma ngodonga lwegobolondo. Uma igobolondo liminyene kakhulu (kusukela ekucwilisweni ngokweqile noma isituko esihle kakhulu), igesi iyavaleleka, yenze izimbobo. Ngikhumbula umsebenzi we-pump impeller ku-duplex stainless steel. Amagobolondo ayemahle, aminyene, futhi eqinile. Kodwa sibe nesilinganiso esingu-30% sokunqatshwa kwegesi engaphezulu. Inkinga yalandelelwa emuva kodaka lwejazi lesithathu nelesine, esasiligaye isikhathi eside ukuze lizinze, salenza libe lihle kakhulu futhi sanciphisa izimbotshana eziphakathi kwezinhlayiya. Icala lakudala lokuthuthukisa indawo eyodwa (ukuzinza kwe-slurry) ngezindleko zaleyo ebalulekile (i-permeability).
Ukuqeda & I-Real-World Benchmark
Ubufakazi busendlini yokugaya. Singakanani isitoko esidinga ukususwa? Okwenziwe kahle i-silica sol precision casting inqubo kufanele iveze izingxenye ezidinga ukuqedwa okuncane. Indawo yokukhipha isango kufanele ihlanzeke, ingadabuli ingxenye yesisekelo sokuphonsa. Indawo engaphezulu kufanele ihlanzeke ngokwanele ukuthi kobunye ubuso obungabalulekile, ukuqhuma kobuhlalu bengilazi obukhanyayo kwanele. Lesi yisilondolozi esikhulu sezindleko, ikakhulukazi kuma-alloys aqinile afana nalawo asekelwe ku-cobalt okunzima ukuwafaka.
Lena isevisi ehlanganisiwe elethwa umhlinzeki wesevisi ephelele. Akukhona nje ukwenza igobolondo nokuthela insimbi. Yilo lonke uchungechunge lwenani, kusukela ekwenzeni iphethini kuye kokugcina CNC imishini. Ebheka QSYUbubanzi—okuhlanganisa ukubunjwa kwegobolondo, ukutshala imali, kanye nomshini we-CNC—zakhelwe ukulawula konke lokhu kugeleza. Bangakwazi ukuklama inqubo yokusakaza becabanga ngomshini, bathuthukise izindawo zamasango ukuze zihlanzeke kancane, okuyinzuzo enkulu yezingxenye eziyinkimbinkimbi. Iwebhusayithi yabo, https://www.tsingtaocnc.com, ikhombisa le ndlela edidiyelwe, izibeka njengesixazululo sezingxenye eziqediwe, hhayi nje ukulingisa okuluhlaza.
Ekugcineni, i-silica sol precision casting iwuchungechunge lwezinqumo ezincane eziyikhulu. Ngayinye—kusuka ku-pH ye-sol kuya kusilinganiso serempu esithandweni somlilo esishisayo—ishiya isigxivizo somunwe engxenyeni yokugcina. Izitolo eziphumelelayo azilandeli nje iresiphi; bafunda amagobolondo, bahumushe imifantu, futhi bahlale belungisa inqubo. Kuyinhlanganisela yezinto ezijulile zesayensi nokusebenza ngezandla, cishe okunembile, ubuciko besitezi sesitolo. Umgomo awukona neze ukuphelela; kuyabikezelwa, ubuhle obuphindaphindwayo, inqwaba ngemva kwenqwaba. Futhi lokho kuvela kuphela ngesikhathi emiseleni, ukubhekana nokuswakama kwesizini yezimvula ezinkulu noma iqoqo elisha lesihlabathi esiphikisayo esiziphatha ngendlela ehlukile kancane.
