Ukutshala imali encane kuletha izingxenye zensimbi ezinembayo ezinemba engaphansi kuka-50 amagremu—ngokuvamile zilula njengo-0.5 g—ngokubekezelela okuqinile kunokungu-±0.05 mm futhi ubuso buphela behle bufike ku-Ra 1.6 µm. Uma isihlalo sakho sevalvu ye-hydraulic kumele sivale kubha engu-420, noma umbhobho wepompo we-cobalt alloy usinda ku-800°C uma uhamba ngebhayisikili elishisayo ngenkathi umelana nokuguguleka okubangelwa udaka olubi, ukutshala imali okuncane akulula. Iwukuphela kwenqubo ebambe i-geometry, ukwakheka kokusanhlamvu, kanye nekhemistri ekuvalelekeni kuyo yonke indawo.
Sesikhiqize izinto ezingaphezu kuka-17,000 ze-micro-cast kusukela ngo-2019—ikakhulukazi ama-AMS 5387 cobalt alloy nozzles, ama-T800-based center shaft rollers, kanye nezindlu zephampu zensimbi engenasici ezingaphansi kuka-32 mm ngobude obude. Kuwo wonke amaqoqo, sibona iqiniso elifanayo: ukutshala imali okujwayelekile kuyehluleka ngaphansi kuka-10 g. Ubuqotho besikhunta buyagoqa. Iphethini ye-wax ihlanekezela ama-spikes angaphezu kuka-3%. Igobolondo le-Ceramic permeability liyehla. Ukugcwaliswa kwensimbi kuba okungalindelekile. Kungakho "i-micro" ingekona nje usayizi - imayelana nokwenza kabusha lonke uchungechunge lwenqubo: ukwakheka kwe-wax, ukulandelana kokwakhiwa kwegobolondo, i-dewax kinetics, izilinganiso ze-preheat ramp, nokulawula ukuthulula okusizwa ngevacuum.
Imikhawulo emithathu yobuchwepheshe ihlukanisa ukusakaza kwangempela kokutshalwa kwezimali okuncane ekusakazeni okuvamile okwehlisiwe. Okokuqala, ukwenza ithuluzi lephethini kufanele kusebenze kokuthi ±1.5 µm ukuphindaphinda—hhayi ±5 µm. Sisebenzisa isikhunta sensimbi esiqinile se-P20 esinezimbotshana ezipholishwe ngogesi kanye namayunithi omjovo ozinzile. Okwesibili, izinhlelo zegobolondo zidinga ukwakhiwa kwezendlalelo ezinhlanu: amajazi amabili okugeza ane-submicron zircon, izendlalelo ezimbili eziphakathi ne-silica ehlanganisiwe, nejazi elilodwa lokugcina lesakhiwo elinokusabalalisa kwezinhlayiyana ezilawulwayo. Okwesithathu, ukuthulula kudinga ukuqapha ngesikhathi sangempela izinga lokushisa elincibilikayo phakathi kuka-±3°C—namazinga e-vacuum abanjwe ku-0.08–0.12 mbar ngesikhathi sokugcwalisa. Yeqa noma yikuphi kwalokhu, futhi uzothola amaqoqo e-porosity eduze kwezindonga ezincane noma ukugcwaliswa kwesango okungaphelele kuzici ezingaphansi kuka-0.8 mm ubukhulu.
Amakhasimende avame ukubuza: "Ngeke nje sivele sisebenzise leyo ngxenye ye-CNC?" Kwamanye amajiyometri—yebo. Kodwa cabangela ipulaki ye-AMS 5387 cobalt alloy enodonga olungu-0.6 mm, isiteshi sokupholisa sangaphakathi se-helical, kanye nezindawo ezintathu zokuvala ezigxilile. Ukwenza imishini kumosha u-82% wezinto ezingavuthiwe. Impilo yamathuluzi yehla ibe izingxenye ezingama-47 ngokufaka i-carbide ngayinye. Futhi ukucindezelwa okuyinsalela okuvela ekugayweni kudala umnsalo ongu-12 µm ekwelashweni kokushisa kokugcina. Ukusakazwa kokutshalwa kwezimali okuncane kuqala ukuma eduze nenetha. Sibe sesisebenzisa ukugaya okwenziwe okwasendaweni kwe-5-axis kuphela lapho i-GD&T ikubiza khona—njengobuso obuvaliwe noma i-flange ekhwezayo. Umphumela? Izindleko zempahla eziphansi ngo-63%, isikhathi sokujikeleza esisheshayo esingu-4.2×, kanye nengozi eyiziro yokusakazeka kwe-micro-crack kusukela ekulimaleni komhlaba owenziwe ngomshini.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakhe ikhono layo lokutshala imali encane ezingxenyeni ezibalulekile zemishini—hhayi ilukuluku lalebhu. Yonke ingxenye ithunyelwa ngokulandeleka okugcwele: inombolo yokushisa, inqwaba ye-wax, ilogu yokwakha igobolondo, irekhodi lokuthulula, nombiko we-CMM ofakwe kumephu we-ASME Y14.5 GD&T. Siqinisekisa ukuzinza kwe-dimensional emijikelezweni emithathu yokushisa (–40°C ukuya ku-+250°C) ngaphambi kokukhishwa. Ubuqotho bobuso buqinisekiswa ngezigaba ezihlukene ze-SEM—hhayi nje ukuhlola okubonakalayo. Futhi yebo—sivivinya yonke ingxubevange ye-T800 ngokusatshalaliswa kwesigaba se-cobalt sisebenzisa imephu ye-EDS, ngoba isilinganiso esingaguquki se-gamma-beta sithinta ngokuqondile impilo yokukhathala kuma-winch center shafts.
I-Micro investment casting isebenza kahle kakhulu uma ibhangqwe nesiyalo sokuklama. Gwema amakhona angaphakathi abukhali—sebenzisa irediya engu-≥0.3 mm. Gcina ukujiya kodonga ngaphansi kwe-3:1. Cacisa okusalungiswa kuphela lapho ukungabunjwa kukudinga khona—u-0.25° wanele kumagobolondo e-zircon amaningi. Futhi ungalokothi uhlukanise izici ezizacile: zixhume kusisindo ngezibopho noma izimbambo ezisekela amandla egobolondo ngesikhathi se-dewax. Sibuyekeza yonke imidwebo ukuze i-castability ngaphambi kokucaphuna. Ngenyanga edlule, sihlabe umkhosi i-undercut engu-0.45 mm esihlalweni sevalvu yokucindezela ebingase iqhekeze igobolondo le-ceramic phakathi ne-steam dewax. Ukuklama kabusha kuthathe amahora amabili. Ilondoloze ikhasimende izinsuku ezingu-11 kanye no-$8,400 kumathuluzi alahliwe.
Lokhu akukhona ngokunciphisa izinqubo ezindala. Kumayelana nokwakha ezintsha—ungqimba ngongqimba, i-micron nge-micron, inkatho ngenkatho. Njengoba amaphampu asendaweni kawoyela adinga izingcindezi eziphakeme, njengoba amasistimu asebenza ngamanzi ancipha abe amarobhothi ahambayo, futhi njengoba ingxubevange ye-cobalt-nickel ingena ezimvilophini zesevisi engu-900°C, ukushintsha kokutshala imali okuncane kusuka ku-niche kuya esidingweni. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. igxila lapho ukunemba kuhlangabezana nomphumela: izingxenye ezinganele nje—kodwa ezisebenzayo, ezisindayo, neziphindaphindayo. micro investment casting iqala kancane. Igcina lapho ukwethembeka kungaxoxiswana khona.
