Pamene mukuponya pampu ya cobalt alloy pampu yamagetsi othamanga kwambiri-kapena phokoso la AMS 5387 lomwe liyenera kupulumuka pa 650 ° C ndi kupsinjika kwa cyclic matenthedwe - pachimake cha ceramic sichimangokhala chigawo cha nkhungu chotaya. Ndiwomanga mwakachetechete wa geometry wamkati, wotsimikizira kuwongolera makulidwe a khoma, mzere woyamba wachitetezo motsutsana ndi kusokonekera kwapang'onopang'ono pakuyika ndalama. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., tawonapo zida za ceramic zikulephera kutsanuliridwa pakati pa zofunda za T800-osati chifukwa cha kutenthedwa bwino kwa binder, koma chifukwa chosagwirizana ndi kukula kwa matenthedwe (CTE) ndi chipolopolo sichinatsimikizidwe kudutsa 0 ° C 25-1111. Ichi ndichifukwa chake "ceramic core for Investment casting factory" sinthawi yosaka kwa ife. Ndilo ndondomeko yolondola yokhala ndi zotsatira zenizeni.
Timapanga ma cores opitilira 12,000 pachaka-chilichonse chimapangidwira makina a aloyi, kapangidwe ka mageti, ndi envulopu yopangira makina. Miyendo yathu yokhazikika imagwiritsa ntchito zosakanikirana za silica-alumina zosakanikirana ndi ma CTE okonzedwa ku ± 0.2 × 10⁻⁶/°C motsutsana ndi CoCr alloys; makonda amaphatikiza mitundu yolimbitsa zirconia ya> 1200°C titanium aluminide mayesero. Mosiyana ndi zida zapashelufu zomwe zimagulitsidwa ndi ogulitsa ambiri okana, athu amavomereza zovomerezeka zitatu zosakambitsirana asanatulutsidwe: Kukhazikika kwa gawo la XRD pa 1000 ° C, mphamvu yakuphwanyidwa kozizira ≥18 MPa itatha kuphwanyidwa, ndi kubwereza kobwerezabwereza kumatsimikiziridwa kudzera pa CT sikani-osati ma calipers okha. Tayesa kusiyanasiyana kwapakati-kuyambira pansi pa 0.015 mm pazigawo zamkati za 80 mm, zovuta kwambiri pamene chilolezo chomaliza cha makina ndi 0.15 mm mbali iliyonse.
Ena angatsutse kuti mchenga kapena makina opangidwa ndi makina amachepetsa nthawi yotsogolera. Koma m'zomwe takumana nazo ndi nyumba za silinda za pampu ya piston, njira zina zimawononga ndalama zambiri kutsika. Miyendo yamchenga imasiya kukhwinyata pamwamba pa Ra 12.5 µm—chosavomerezeka kuti chisindikizo cha hydraulic chomwe chimafunika Ra ≤1.6 µm mukamaliza kupanga. Ma cores opangidwa ndi makina amayambitsa ma microcracks kuchokera pakupotoza kwa zida, zomwe zimafalikira powombera zipolopolo ndikupangitsa kuti zipolopolo zichotsedwe. Tatsata 23% mitengo yayitali kwambiri pazigawo zotere motsutsana ndi ma cores a ceramic okhala ndi mphamvu zobiriwira zobiriwira komanso mbiri zowongolera. Yankho silili lachangu - ndilanzeru: geometry yokhazikika yotsimikizika, machitidwe otenthetsera, ndi zolemba zotsatirika zomwe zimamangidwa pagawo lililonse loponyera.
Kodi chimalekanitsa chiyani woperekera zida za ceramic wodalirika ndi wogulitsa malonda? Zinthu zinayi zomwe timazitsimikizira tsiku ndi tsiku:
- Satifiketi ya Raw material: Gulu lililonse la silika limakhala ndi malipoti oyesa a ASTM C704 - osati kungolengeza kwa ogulitsa
- Kupanga mapu: Kuyanika kwapakati kumatsata ma ramp a chinyezi oyendetsedwa ndi ISO 9001 (osati ndandanda yanthawi yake), kuteteza kung'amba pang'ono m'mavane akukhuthala kwa 3.2 mm
- Kuyankha kwa Dimensional: Timayeza pachimake chilichonse ndi Zeiss CONTURA G2 RDS CMM, osati zofananira zowoneka bwino-zofunikira kwambiri pazowongolera za GD&T monga kulolerana Ø0.05 mm
- Kutsimikizika kwapadera kwa aloyi: Ma co-based cores amayesedwa m'makina enieni oyika ndalama pogwiritsa ntchito mawonekedwe anu a slurry viscosity ndi dip cycle, osati nkhungu za pulasitala wamba
Kuwongolera uku kumatipangitsa kuti tipereke zida za ceramic zomwe zimakhala zowona kudzera pakutsitsa, kuwombera, ndi kuthira zitsulo, ngakhale ma geometries ovuta ngati ma valavu amitundu yambiri okhala ndi njira zozizirira za 2.5 mm-diameter. Makasitomala aku North America ndi ku Europe amafotokoza mosadukiza 15-20% zochitika zocheperako pazoseweretsa zomwe zimafuna kulolerana kolimba mkati (± 0.08 mm). Palibe zamatsenga. Zolemba zongolembedwa, ma metrology owerengeka, ndi kulumikizana kwachitsulo komwe kumapangidwira pachimake - osawonjezedwa ngati lingaliro lina.
Ngati mukufufuza a ceramic pachimake kwa ndalama kuponyera fakitale kugwiritsa ntchito komwe magwiridwe antchito amadalira kukhulupirika kwamkati - osati "kungokwanira" - ndiye kuti mapepala azinthu ndi nthawi yobweretsera zimakhala zocheperako poyerekeza ndi zipika zomwe zimayenderana ndi kutentha ndi malipoti oyendera a CMM. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Timachita chilichonse pachimake ngati chigawo chogwira ntchito, osati chogwiritsidwa ntchito. Timagawana zambiri zoyeserera ndi makasitomala tisanavomereze nkhani yoyamba. Timasintha ma binder kutengera kuchuluka kwa chipolopolo chanu, osati mawonekedwe athu osakhazikika. Ndipo timasunga ma rekodi a batch kwa zaka 10, osati kungotsatira, koma kuti mutha kuyang'ana zolakwika zilizonse kubwerera ku ng'anjo yeniyeni, malo opangira, ndi kusintha kwa oyendetsa.
Tsogolo la kuponya mwatsatanetsatane silikhudza ng'anjo zazikulu kapena ma CNC othamanga. Zimakhudza kuthetsa kusiyana pakati pa chiyambi-kuyambira pachimake. Pomwe kufunikira kumakulirakulira pamakoma ocheperako, njira zocheperako, ndi ma aloyi otentha kwambiri ngati T800 ndi CMSX-4, ma cores a ceramic amachoka kuukadaulo kupita pachipata chapamwamba. Kusinthaku kumayamba ndikufunsa kuti "Kodi zingatheke?" koma “Kodi khalidwe lake linganenedweratu molondola—ndi kutsimikiziridwa motani?” Tapanga malo athu, ma protocol athu, ndi maubwenzi athu pafunsoli. Chifukwa gawo lanu likamagwira ntchito pa bar 350 mkati mwa msonkhano wapampopi wakunyanja, palibe malo ongoyerekeza m'malo opanda kanthu.
